Clamping seat assembly, wheel type moving device, supporting frame, locking mechanism and keeping mechanism

Abstract

The utility model relates to a clamping seat assembly, a wheel type moving device, a supporting frame, a locking mechanism and a retaining mechanism. The clamping seat assembly comprises a seat plate assembly used for placing an object on the seat plate assembly; the locking mechanism comprises at least one locking piece; the at least one locking piece is arranged on the seat plate assembly and can slide between a first locking position and a first unlocking position; when the locking piece is located at the first locking position, the locking piece can lock the object; when the locking piece is located at the first unlocking position, the locking piece can unlock the object. The wheel type moving device comprises the clamping seat assembly.

Description

Technical Field

[0001] The utility model relates to a card seat component, a wheeled mobile device, a support frame for supporting a seat plate assembly, a locking mechanism and a retaining mechanism. Background Art

[0002] Usually, when traveling with infants or animals, users can use strollers to move them, but these strollers cannot be placed directly in the vehicle in the unfolded state. Instead, they need to be folded and stored in the vehicle (e.g., the trunk of the vehicle), and other vehicles are set in the vehicle to carry the infants or animals. This means that users need to prepare at least two vehicles when going out, which is inconvenient. Moreover, since the seat structure of the stroller is relatively complex, even if it is folded, it will take up a large space in the vehicle.

[0003] In addition, although users can use handheld carriers to carry infants, young children or animals when going out, in this case they may need to carry the carrier for a long time, which is quite laborious. Even if the carrier is placed on a mobile device, the carrier may not be stably fixed on the mobile device, causing the carrier to tilt or even fall off the mobile device when encountering bumpy roads or slopes, thus posing a greater safety risk. Utility Model Content

[0004] In one aspect, the utility model provides a card seat assembly, comprising: a seat plate assembly for placing an object thereon; a locking mechanism, comprising at least one locking member; the at least one locking member is arranged on the seat plate assembly and can slide between a first locking position and a first release position; when the locking member is in the first locking position, the locking member can lock the object; when the locking member is in the first release position, the locking member can release the object.

[0005] Furthermore, the locking mechanism is installed on the seat plate assembly, and the locking mechanism also includes at least one release operating member, which is connected to the locking member and can slide between a second locking position and a second release position; wherein, when the release operating member is in the second locking position, the locking member is in the first locking position; when the release operating member is operated and moves from the second locking position to the second release position, the locking member moves to the first release position along with the movement of the release operating member.

[0006] Furthermore, the release operating member and / or the locking member is provided with a second driving inclined surface, and the release operating member and the locking member are operably connected via the second driving inclined surface, so that the moving direction of the release operating member is perpendicular to the moving direction of the locking member.

[0007] Furthermore, the locking member is provided with an extension portion, the extension portion is provided with an inclined hole, the second driving inclined surface is provided on the hole wall of the inclined hole; and the release operating member is provided with a driving pin that slidably cooperates with the inclined hole.

[0008] Furthermore, the locking mechanism includes two first locking members, and the two first locking members are connected by a linkage device. When any one of the first locking members is subjected to force and moves toward the first unlocking position, the linkage device drives the other first locking member to move synchronously to the first unlocking position.

[0009] Further, the two first locking members are arranged on the same side of the seat plate assembly; the two first locking members move in the same direction to switch to the first locking position or the first releasing position; or, the two first locking members move in opposite directions to switch to the first locking position or the first releasing position; the card seat assembly also includes at least one elastic device, which applies a force to the first locking member to move toward the first locking position.

[0010] Furthermore, the linkage device includes a linkage assembly connected between the two first locking members. When any one of the first locking members is subjected to force and moves between the first release position and the first lock position, the linkage assembly drives the other first locking member to move synchronously between the first release position and the first lock.

[0011] Furthermore, the linkage assembly includes a fixed connection point located between the two first locking members, and two pivots located on both sides of the fixed connection point, and the linkage assembly is pivotally connected to the two first locking members through the two pivots; when any one of the first locking members moves, the two pivots are caused to move in opposite directions, so that the two first locking members move synchronously in opposite directions.

[0012] Further, the linkage assembly includes a first link, a second link, a third link and a fourth link, the first link, the second link, the third link and the fourth link are connected in pairs to form four connection points, one of the four connection points is a fixed connection point, the fixed connection point is fixed to the seat plate assembly, the connection point opposite to the fixed connection point among the four connection points is a central connection point, and two links among the first link, the second link, the third link and the fourth link that are connected to the central connection point are respectively connected to the two first locking members; the line connecting the fixed connection point and the central connection point is perpendicular to the moving direction of the two first locking members.

[0013] Furthermore, the locking mechanism includes two second locking members, which are arranged on the other side of the seat plate assembly and are parallel to the two first locking members, and the two second locking members have corresponding settings to the two first locking members.

[0014] Furthermore, the locking mechanism includes two second locking members, which are arranged on the other side of the seat plate assembly and are parallel to the two first locking members; the two first locking members and the two second locking members are connected by the linkage device, and the linkage device allows the two first locking members and the two second locking members to move synchronously to the first release position.

[0015] Further, the locking mechanism includes at least one first locking member and at least one second locking member, and the moving direction of the at least one first locking member is parallel to the moving direction of the at least one second locking member; wherein, the first locking member and the second locking member located on the diagonal of the at least one first locking member and the at least one second locking member are connected by a linkage device, and the linkage device allows the connected first locking member and the second locking member to move in opposite directions and synchronously switch to the first release position.

[0016] Further, the linkage device includes a linkage member, which is a connecting rod or a traction member, and the first locking member and the second locking member located on the diagonal are connected through the linkage member; and / or the card seat assembly also includes at least one elastic device, which applies a force to the first locking member and / or the second locking member to move toward the first locking position.

[0017] Furthermore, the locking mechanism comprises two first locking members and two second locking members, and the two first locking members and the two second locking members are connected via two linkage members.

[0018] Furthermore, the two linkage members are connecting rods respectively, and the two linkage members are arranged to cross each other.

[0019] Furthermore, the two linkage members are pivotally connected at their intersection; and / or, the connection points of the two linkage members and the two second locking members define an angle relative to the intersection of the two linkage members, and when the locking member moves from the first locking position to the first release position, the angle of the angle becomes smaller.

[0020] Furthermore, the card seat assembly also includes two support frames, which are used to support the seat plate assembly; the two support frames are respectively arranged on the left and right sides of the seat plate assembly, and each of the support frames includes a longitudinal rod, a connecting rod and a shock-absorbing rod connected into a triangular structure.

[0021] Furthermore, the longitudinal rod is arranged below the seat plate assembly and fixedly connected to the seat plate assembly; the first end of the connecting rod is connected to the first end of the longitudinal rod, and the second end of the connecting rod is connected to the first end of the shock-absorbing rod; the second end of the shock-absorbing rod is connected to the longitudinal rod; the shock-absorbing rod is elastic to provide buffering support to the seat plate assembly.

[0022] Furthermore, the card seat assembly is used to be installed on a foldable frame; each of the support frames also includes a first connecting component and a second connecting component, the first end of the first connecting component and the first end of the second connecting component are respectively pivotally connected to the second end of the connecting rod, the second end of the first connecting component, the second end of the second connecting component and the first end of the connecting rod are respectively pivotally connected to different rods of the frame that can be folded relative to each other.

[0023] Further, a first connecting rod is connected between the longitudinal rods of the two support frames; and / or a second connecting rod is connected between the connecting rods of the two support frames.

[0024] Further, the longitudinal rod includes a limit finger, which is arranged at the first end of the longitudinal rod, and the limit finger limits the angle of the longitudinal rod pivoting downward relative to the connecting rod by abutting against the connecting rod; and / or, the longitudinal rod includes a limit protrusion, which is arranged at the first end of the longitudinal rod, and the limit protrusion limits the angle of the longitudinal rod pivoting upward relative to the connecting rod by abutting against the connecting rod.

[0025] Furthermore, the support frame also includes a limiting member, a first end of the limiting member is slidably connected to the longitudinal rod, and a second end of the limiting member is pivotally connected to the connecting rod.

[0026] Further, the card seat assembly also includes a retaining mechanism, which is used to retain the locking member in the first unlocking position, and the retaining mechanism includes: a touch button, which is arranged on the seat plate assembly; the touch button can move in a vertical direction relative to the seat plate assembly to allow at least a portion of the touch button to protrude upward relative to the seat plate assembly; a buckle portion, which is connected to the touch button; and a reset member, which is arranged between the touch button and the seat plate assembly, and is used to drive the touch button to move upward so that the touch button protrudes upward relative to the seat plate assembly; wherein, when the object is placed on the seat plate assembly, the touch button is pressed downward by the object, and the buckle portion moves downward with the touch button; when the locking member moves from the first locking position to the first unlocking position, the retaining hook of the locking member hooks the buckle portion, and the locking member is retained in the first unlocking position.

[0027] Furthermore, the buckle portion can move in a vertical direction relative to the touch button; the retaining mechanism further includes an elastic member, which is arranged between the touch button and the buckle portion and is used to drive the buckle portion to move downward relative to the touch button.

[0028] Further, the socket assembly includes at least one engaging channel, and the at least one engaging channel is used to engage at least one engaging member of the object; when the locking member is in the first locking position, the locking member extends into the corresponding engaging channel to lock the corresponding engaging member; when the locking member is in the first releasing position, the locking member retracts relative to the engaging channel to allow the engaging member to be removed from the engaging channel.

[0029] Furthermore, the socket assembly further comprises a retaining mechanism, and the retaining mechanism is used to retain the locking member in the first unlocking position.

[0030] Further, the retaining mechanism includes: a movable part installed in a slideway connected to the engaging channel; the movable part has an abutting end suitable for extending into the engaging channel and a engaging end away from the abutting end; a reset device, used to drive the abutting end to extend into the engaging channel; and when the engaging channel is engaged with the engaging part, the abutting end is pressed by the engaging part and withdraws from the engaging channel; when the locking part moves to the first unlocking position, the engaging end is engaged with the locking part to lock the locking part in the first unlocking position.

[0031] Furthermore, the clamping end is provided with a first clamping portion, and the locking member is provided with a second clamping portion; wherein, when the clamping member is clamped into the clamping channel, the first clamping portion moves to the moving path of the second clamping portion; when the locking member moves to the first release position, the second clamping portion is clamped with the first clamping portion.

[0032] Further, an elastic arm is provided on the locking member, and the second buckle portion is provided on the elastic arm; and / or, one of the first buckle portion and the second buckle portion is a slot, and the other is a wedge-shaped step.

[0033] Further, the locking member and the elastic arm are integrally formed; or, the elastic arm is fixed to the locking member by a fastener, and a rotation-stopping structure is provided between the elastic arm and the locking member.

[0034] Furthermore, the resetting device also includes a cable, a first resetting member and a sliding member, the cable is connected between the movable member and the sliding member; the first resetting member abuts against the sliding member to drive the sliding member to reset, and when the sliding member is reset, the cable drives the abutting end to extend into the engaging channel.

[0035] Furthermore, the sliding member has a snap-in indicating area, and the snap-in indicating area is used to indicate the position of the movable member; the sliding member is installed in a hollow rod, and the rod is provided with an observation hole for observing the snap-in indicating area.

[0036] Furthermore, the movable part has a connecting portion located outside the slide, the cable is supported by a guide frame located outside the slide and connected to the connecting portion; the moving direction of the cable located between the connecting portion and the guide frame is parallel to the slide.

[0037] Furthermore, the locking piece is provided with a matching portion, and the movable piece has a limiting portion located outside the slide; when the engaging piece moves out of the engaging channel, the resetting device drives the movable piece to move, so that the limiting portion moves to the moving path of the locking piece and abuts against the matching portion, thereby keeping the locking piece in the first unlocking position; when the engaging channel is engaged with the engaging piece, the limiting portion moves out from the moving path of the locking piece to allow the locking piece to move to the first locking position.

[0038] Furthermore, the card holder assembly is used to be installed on a vehicle frame; at least one unlocking operating member is installed on the vehicle frame, and the at least one unlocking operating member is operably connected to the at least one locking member, and the at least one unlocking operating member is used to drive the at least one locking member to move to the first unlocking position.

[0039] Further, the at least one unlocking operating member has a unlocking identification area, and the unlocking identification area is used to indicate that the at least one locking member is in the first locking position or the first unlocking position.

[0040] Furthermore, the frame includes at least one wheel seat for mounting the front wheel or the rear wheel, and the at least one unlocking operating member is slidably matched with the at least one wheel seat; the unlocking operating member is connected to the at least one locking member via at least one traction rope.

[0041] Furthermore, the frame is provided with at least one guiding mechanism for guiding the at least one traction rope, and the at least one guiding mechanism includes at least one rotating member arranged near the at least one release operating member.

[0042] Furthermore, the unlocking operating member has a first driving inclined surface, and the first driving inclined surface is inclined relative to the sliding direction of the unlocking operating member; the end of the traction rope abuts against the first driving inclined surface so as to be able to slide along the first driving inclined surface.

[0043] Further, the unlocking operating member includes a first limiting wall, a first clamping structure is formed between the first limiting wall and the first driving inclined surface; a second limiting wall is arranged in the wheel seat, a second clamping structure is formed on the second limiting wall; and the first driving inclined surface is between the first limiting wall and the second limiting wall, and the end of the traction rope is suitable for engaging with the first clamping structure or the second clamping structure.

[0044] Furthermore, a first guiding inclined surface is provided in the wheel seat, the first guiding inclined surface forms an angle with the first driving inclined surface, and the end of the traction rope abuts against the first driving inclined surface and the first guiding inclined surface within the range of the angle.

[0045] Furthermore, the locking mechanism includes at least two locking members, and the at least two locking members are connected by a linkage device, and the linkage device allows the at least two locking members to move synchronously to the first unlocking position; a release state synchronization mechanism and at least two release operating members are installed on the frame, and the at least two release operating members are respectively connected to the at least two locking members, and the release state synchronization mechanism allows the at least two release operating members to be in a state of releasing the at least two locking members at the same time.

[0046] Furthermore, the at least two unlocking operating members are respectively connected to the at least two locking members through at least two traction ropes; the frame includes at least two wheel seats for mounting the front wheels or the rear wheels, and the at least two unlocking operating members can be slidably mounted to the at least two wheel seats.

[0047] Furthermore, the at least two release operating members respectively have a first driving inclined surface, which is inclined relative to the sliding direction of the release operating member; the at least two release operating members respectively abut against the ends of the at least two traction ropes through the first driving inclined surface; the release state synchronization mechanism includes at least two second reset members, each of which abuts against the corresponding end of the traction rope to drive the end of the traction rope to leave the first driving inclined surface to allow the corresponding release operating member to slide downward.

[0048] Further, the seat plate assembly includes a first seat plate assembly and a second seat plate assembly; the locking mechanism includes a first locking mechanism and a second locking mechanism, the first locking mechanism is arranged on the first seat plate assembly, the second locking mechanism is arranged on the second seat plate assembly, and the first locking mechanism and the second locking mechanism both include the at least one locking member; the first seat plate assembly and the second seat plate assembly can rotate relative to each other about the rotation axis so that the card base assembly has an expanded state and a folded state; and when the card base assembly is in the expanded state, the card base assembly is suitable for supporting the object, and the at least one locking member is suitable for locking the object.

[0049] Further, the seat plate assembly is mounted on a foldable connecting component, the connecting component includes the rotation axis, the expanded state of the connecting component corresponds to the expanded state of the socket assembly, and the folded state of the connecting component corresponds to the folded state of the socket assembly.

[0050] Further, the connecting assembly includes: a first connecting member, to which the first seat plate assembly is mounted; an auxiliary support member, to which the second seat plate assembly is mounted; and the first connecting member and the auxiliary support member are pivotally connected via a pivot, and a center line of the pivot forms the rotation axis.

[0051] Further, the first connecting member includes two first tubes arranged in parallel, and the auxiliary supporting member includes two second tubes arranged in parallel, and each first tube is pivotally connected to an adjacent second tube through the pivot; the first seat plate assembly is connected between the two first tubes and extends along a first direction, and the second seat plate assembly is connected between the two second tubes and extends along the first direction; and when the connecting assembly is in the expanded state, the first seat plate assembly and the second seat plate assembly are spaced apart in the second direction, and the first direction and the second direction are not parallel.

[0052] Further, when the connecting assembly is in the expanded state, the angle between the adjacent first tubes and the second tubes is 180 degrees; and when the connecting assembly is in the folded state, the angle between the adjacent first tubes and the second tubes is an acute angle; and / or, the first seat plate assembly is close to the pivot and the second seat plate assembly is far away from the pivot, and when the connecting assembly is in the folded state, the positions of the first seat plate assembly and the second seat plate assembly are staggered.

[0053] Furthermore, sleeves are provided at both ends of the first seat plate assembly, each of the sleeves is sleeved on the corresponding first pipe, and the pivot is passed through the sleeve.

[0054] Further, the first seat plate assembly has at least one first engaging channel, each of which extends in the second direction; the first locking mechanism has at least one first locking piece, each of which moves in the first direction to switch to the first locking position or the first unlocking position; in the first locking position, the first locking piece extends into the corresponding first engaging channel; in the first unlocking position, the first locking piece retracts from the corresponding first engaging channel; the second seat plate assembly has at least one second engaging channel, each of which extends in the second direction; the second locking mechanism has at least one second locking piece, each of which moves in the first direction to switch to the first locking position or the first unlocking position; in the first locking position, the second locking piece extends into the corresponding second engaging channel; in the first unlocking position, the second locking piece retracts from the corresponding second engaging channel; the first direction and the second direction are not parallel.

[0055] Further, the first locking mechanism includes two first locking members, which are connected by a first linkage assembly, and the first linkage assembly controls the two first locking members to move synchronously so that the two first locking members can switch synchronously between the first locking position and the first unlocking position; and / or, the second locking mechanism includes two second locking members, which are connected by a second linkage assembly, and the second linkage assembly controls the two second locking members to move synchronously so that the two second locking members can switch synchronously between the first locking position and the first unlocking position.

[0056] Furthermore, the at least one first locking member is connected to the at least one second locking member by at least one linkage member, and the first locking member and the second locking member connected to the same linkage member switch synchronously between the first locking position and the first releasing position; and the movement directions of the first locking member and the second locking member connected to the same linkage member are opposite.

[0057] Further, the first seat plate assembly is connected to the first pivot seat, the second seat plate assembly is connected to the second pivot seat, the first pivot seat and the second pivot seat are pivoted to form the rotation axis; and the moving direction of the first locking member, the moving direction of the second locking member, and the rotation axis are parallel to each other.

[0058] Furthermore, the first seat plate assembly is installed to the first support frame, and the first support frame is connected to the first pivot seat; the second seat plate assembly is installed to the second support frame, and the second support frame is connected to the second pivot seat; the first pivot seat and the second pivot seat are connected to the mounting seat, and the mounting seat is used to be detachably connected to the frame.

[0059] In another aspect, the utility model also provides a wheeled mobile device, including a frame and the above-mentioned card seat assembly.

[0060] Furthermore, the frame is provided with a storage rack, the storage rack has at least one accommodating cavity, the mouth of the at least one accommodating cavity is provided with at least one clamping portion, and the clamping portion is made of elastic material.

[0061] In another aspect, the utility model also provides a wheeled mobile device, including a frame and a connecting assembly; the frame includes: a front support rod, on which a front wheel is installed; a rear support rod, on which a rear wheel is installed; an upper support rod, connected to an armrest; the upper end of the front support rod, the upper end of the rear support rod and the lower end of the upper support rod are pivotally connected through a pivoting portion; the connecting assembly is pivotally connected to the frame, and the connecting assembly is folded as the frame is folded. A card seat assembly is installed on the connecting assembly, and the card seat assembly includes: a seat plate assembly, for placing a carrier thereon; and a locking mechanism, including at least one locking member, the at least one locking member is arranged on the seat plate assembly and can slide between a first locking position and a first unlocking position, when the locking member is in the first locking position, the locking member can lock the carrier, and when the locking member is in the first unlocking position, the locking member can release the carrier.

[0062] Further, the connecting assembly includes: a first connecting member, a front end of the first connecting member is pivotally connected to the first pivot point of the front support rod; an auxiliary support member, a front end of the auxiliary support member is pivotally connected to the second pivot point of the first connecting member, and the auxiliary support member is pivotally connected to the third pivot point of the rear support rod; a linking member, an upper end of the linking member is pivotally connected to the fourth pivot point of the upper support rod, and a lower end of the linking member is pivotally connected to the fifth pivot point of the auxiliary support member; when the frame is in an expanded state, the first connecting member and the auxiliary support member are expanded, and the second pivot point is located between the first pivot point and the third pivot point, and the fifth pivot point is located between the second pivot point and the third pivot point; when the frame is in a folded state, the first connecting member and the auxiliary support member are folded.

[0063] Further, when the frame is unfolded, the first connecting member and the auxiliary supporting member are arranged horizontally, and the second pivot point, the third pivot point and the fifth pivot point are in a straight line.

[0064] Furthermore, the connection assembly also includes a seat plate support, which is connected to the auxiliary support and can move synchronously with the auxiliary support. The seat plate support is used to install a card seat assembly, and the card seat assembly is used to engage with the carrier.

[0065] Further, the seat plate support is arranged on the inner side of the auxiliary support, and the rear end of the first connecting member is located between the seat plate support and the auxiliary support; and / or the seat assembly is installed on the seat plate support, and the seat assembly includes a plurality of engaging points.

[0066] Furthermore, a card holder assembly is installed on the auxiliary support member, and the card holder assembly includes a plurality of engaging points.

[0067] Furthermore, the linkage has an S-shaped structure, and the S-shaped structure has a first section, a second section and a third section in sequence.

[0068] Furthermore, a card seat assembly is installed on the connecting assembly, and the card seat assembly includes a seat plate assembly, and the seat plate assembly is used to place and support the carrier; the seat plate assembly has a first extension portion and / or a second extension portion, the first extension portion extends backward from the seat plate assembly, and the second extension portion extends forward from the seat plate assembly.

[0069] Furthermore, a base assembly is installed on the connecting assembly, and the base assembly includes a plurality of engaging points; when the frame is folded, the front support rod, the rear support rod, and the upper support rod are close to each other, and the connecting assembly drives the base assembly to pivot, so that the front end of the base assembly pivots downward and the rear end of the base assembly pivots upward.

[0070] On the other hand, the utility model also provides a wheeled mobile device, comprising: a frame, including: a front support rod, on which a front wheel is installed; a rear support rod, on which a rear wheel is installed; an upper support rod, connected to an armrest; the upper end of the front support rod, the upper end of the rear support rod and the lower end of the upper support rod are pivotally connected through a pivoting portion; a card seat assembly, mounted on the frame and used to support and lock the carrier; wherein, when the frame is unfolded, the center of gravity of the card seat assembly is offset toward the rear wheel relative to the pivoting portion. wherein, the card seat assembly comprises: a seat plate assembly, for placing the carrier thereon; and a locking mechanism, comprising at least one locking member, the at least one locking member being arranged on the seat plate assembly and being able to slide between a locking position and a release position, wherein when the locking member is in the locking position, the locking member can lock the carrier, and when the locking member is in the release position, the locking member can release the carrier.

[0071] Furthermore, when the frame is in the unfolded state, the center of gravity of the card seat assembly is close to or located at the plane formed by the rear support rods.

[0072] Further, when the frame is in the unfolded state, the socket assembly is lower than the pivoting portion.

[0073] On the other hand, the utility model also provides a wheeled mobile device, comprising: a frame; a base assembly, which is installed on the frame and extends in the left-right direction; the base assembly comprises a seat plate assembly and a locking mechanism, the seat plate assembly is used to place a vehicle thereon, the locking mechanism comprises at least one locking member, the at least one locking member is arranged on the seat plate assembly and can slide between a locking position and a release position, when the locking member is in the locking position, the locking member can lock the vehicle, and when the locking member is in the release position, the locking member can release the vehicle; wherein, the frame comprises a first cross bar and / or a second cross bar extending in the left-right direction; the first cross bar is located at a predetermined distance in front of the base assembly, and the first cross bar and the base assembly cooperate to support the vehicle; the second cross bar is located at a predetermined distance behind the base assembly, and the second cross bar cooperates with the base assembly to support the vehicle.

[0074] Furthermore, the frame includes: a front support rod, on which a front wheel is installed; a rear support rod, on which a rear wheel is installed; a connecting assembly, which is respectively connected to the front support rod and the rear support rod; the base assembly is installed on the connecting assembly; the front support rod includes the first cross bar, and / or the connecting assembly includes the second cross bar; and / or the position of the second cross bar in the front-to-back direction is adjustable.

[0075] Furthermore, the front support rod is pivotally connected to the rear support rod, and the frame can be folded; the connecting assembly includes a first connecting member and an auxiliary support member, the first connecting member is pivotally connected to the first pivot point of the front support rod, the second pivot point of the first connecting member is pivotally connected to the auxiliary support member, and the auxiliary support member is pivotally connected to the third pivot point of the rear support rod; when the frame is in an expanded state, the first connecting member and the auxiliary support member are expanded, and the second pivot point is located between the first pivot point and the third pivot point; when the frame is in a folded state, the first connecting member and the auxiliary support member are folded; the card seat assembly is connected to the first connecting member or the auxiliary support member; the auxiliary support member includes the second cross bar.

[0076] Furthermore, the socket assembly has a sleeve for being sleeved with the first connecting member or the auxiliary supporting member, and the pivot of the second pivot point passes through the sleeve.

[0077] Furthermore, the frame also includes an upper support rod, the lower end of which is pivotally connected to the upper end of the front support rod and the upper end of the rear support rod, and the upper end of the upper support rod is connected to the armrest; the connecting assembly also includes a linking member, the upper end of which is connected to the upper support rod, and the lower end of which is connected to the auxiliary support member.

[0078] Further, the first cross bar is provided with a first groove or a first positioning protrusion; and / or, the second cross bar is provided with a second groove or a second positioning protrusion; and / or, the card seat assembly is provided with a third groove or a third positioning protrusion.

[0079] Further, the first cross bar is installed with a first abutment member for abutting against the carrier; and / or the second cross bar is installed with a second abutment member for abutting against the carrier.

[0080] Further, the card seat assembly includes at least one card slot extending in the front-to-back direction, and the at least one card slot is arranged in a row with intervals from each other in the left-to-right direction; the at least one locking member can slide in the left-to-right direction, and in the locking position, the at least one locking member extends into the at least one card slot to lock the carrier, and in the release position, the at least one locking member retracts from the at least one card slot to release the carrier.

[0081] Furthermore, the frame includes at least one wheel seat for mounting the front wheel or the rear wheel, and at least one release operating member is slidably engaged with the at least one wheel seat; the at least one release operating member is connected to the at least one locking member via at least one traction rope to drive the at least one locking member to move to the release position; the at least one release operating member has a release identification area, and the release identification area is used to indicate that the at least one locking member is in the lock position or the release position.

[0082] Further, the card holder assembly further comprises at least one retaining mechanism, and when the at least one locking member is driven to the unlocking position, the at least one retaining mechanism is used to lock the at least one locking member at the unlocking position.

[0083] In addition, the utility model provides a wheeled mobile device, comprising: a frame; a base assembly, mounted on the frame and used to engage a carrier; the base assembly comprises at least one locking member, the at least one locking member having a locking position for locking the carrier and a releasing position for releasing the carrier, the at least one locking member being able to slide between the locking position and the releasing position, and when the locking member is in the locking position, the locking member can lock the object, and when the locking member is in the releasing position, the locking member can release the object; and an indication device, mounted on the frame and / or the base assembly, for indicating a working state of the wheeled mobile device; the working state includes whether the base assembly is engaged with the carrier, and / or whether the at least one locking member locks the carrier.

[0084] Further, the socket assembly includes at least one engaging channel, and the at least one engaging channel is used to engage with the engaging member of the carrier; the indicating device includes a first indicating device, and the first indicating device is used to indicate whether the at least one engaging member is engaged in the at least one engaging channel.

[0085] Furthermore, the first indication device includes: a movable part, which is installed in a slideway connected to the engaging channel; the movable part has an abutment end suitable for extending into the engaging channel; a sliding part, which is operably connected to the movable part and has an engaging indication area; when the engaging part is engaged in the engaging channel, the abutment end is pressed by the engaging part and withdraws from the engaging channel, so that the movable part drives the sliding part to slide to change the position of the engaging indication area.

[0086] Furthermore, the frame includes a hollow rod, the sliding member can slide in the rod, and the rod is provided with an observation hole for observing the clamping indication area; the first indication device also includes a cable, and the cable is connected between the sliding member and the movable member.

[0087] Furthermore, the first indicating device further comprises a first restoring member, the first restoring member abuts against the sliding member and is used to drive the sliding member to reset, so that the cable drives the abutting end to extend into the engaging channel.

[0088] Furthermore, the movable part has a connecting portion located outside the slide, the cable is supported by a guide frame located outside the slide and connected to the connecting portion; the moving direction of the cable located between the connecting portion and the guide frame is parallel to the slide.

[0089] Furthermore, the movable part has a clamping end away from the abutting end; when the clamping part is clamped in the clamping channel and the locking part moves to the unlocking position, the clamping end is clamped with the locking part to lock the locking part at the unlocking position.

[0090] Further, the indicating device comprises a second indicating device, and the second indicating device is used to indicate that the at least one locking member is in the locking position or the releasing position.

[0091] Further, the second indicating device comprises at least one unlocking operation member, the at least one unlocking operation member is operably connected to the at least one locking member, the at least one unlocking operation member has a unlocking identification area, and the unlocking identification area is used to indicate the position of the at least one locking member.

[0092] Furthermore, the wheeled mobile device also includes at least one retaining mechanism, and when the at least one locking member is driven to the release position, the at least one retaining mechanism is used to lock the at least one locking member at the release position, so that the corresponding release operating member remains in the release position of releasing the locking member.

[0093] Further, the card seat assembly includes a seat plate assembly, which is used to place the carrier thereon; the at least one locking member and the at least one release operating member are arranged on the seat plate assembly; the at least one release operating member and / or the at least one locking member are provided with a second driving inclined surface, and the at least one release operating member and the at least one locking member are operably connected through the second driving inclined surface, so that the moving direction of the release operating member is perpendicular to the moving direction of the locking member.

[0094] Furthermore, the frame includes a wheel seat for mounting the front wheel or the rear wheel; the at least one unlocking operating member is slidably mounted to the wheel seat and is connected to the at least one locking member via at least one traction rope.

[0095] Furthermore, the card seat assembly includes at least two locking members, and the at least two locking members are connected by a linkage device, and the linkage device allows the at least two locking members to move synchronously to the release position; the wheeled mobile device includes a release state synchronization mechanism and at least two release operating members, and the at least two release operating members are respectively operably connected to the at least two locking members, and the release state synchronization mechanism allows the at least two release operating members to be in a state of releasing the at least two locking members at the same time.

[0096] Furthermore, the frame includes a wheel seat for mounting the front wheel or the rear wheel; the at least one release operating member is slidably mounted to the wheel seat and is connected to the at least one locking member via at least one traction rope; the at least two release operating members are operably connected to the ends of at least two traction ropes via a first driving inclined plane, respectively; the release state synchronization mechanism includes at least two second reset members, each of which abuts against the end of the corresponding traction rope to push the end of the traction rope away from the first driving inclined plane.

[0097] On the other hand, the utility model also provides a wheeled mobile device, comprising: a frame, comprising at least two wheel seats for mounting front wheels or rear wheels; a card seat assembly, comprising: a seat plate assembly, for placing a vehicle thereon; a locking mechanism, comprising at least two locking members; the at least two locking members are arranged on the seat plate assembly and can slide between a locking position and a release position; when the locking member is in the locking position, the locking member can lock the vehicle; when the locking member is in the release position, the locking member can release the vehicle; a linkage device, connected to the at least two locking members, to allow the at least two locking members to move synchronously to the release position; at least two release operating members, respectively slidably mounted to the at least two wheel seats; the at least two release operating members are respectively connected to the at least two locking members by at least two traction ropes; a release state synchronization mechanism, the release state synchronization mechanism allows the at least two release operating members to be in a state of releasing the at least two locking members at the same time.

[0098] Furthermore, the at least two locking members are connected via a linkage device, and when any of the locking members is subjected to a force and moves toward the unlocking position, the linkage device drives the other locking members to move toward the unlocking position synchronously.

[0099] Further, the locking mechanism includes two locking members, and the linkage device includes a linkage assembly connected between the two locking members, and the linkage assembly allows the two locking members to move synchronously in opposite directions.

[0100] Furthermore, the at least two release operating members respectively have a first driving inclined surface, and the at least two release operating members are respectively operably connected to the ends of the at least two traction ropes through the first driving inclined surface; the release state synchronization mechanism includes at least two second reset members, and each of the second reset members abuts against the corresponding end of the traction rope to push the end of the traction rope away from the first driving inclined surface.

[0101] Furthermore, a first guiding inclined surface is provided in the wheel seat, the first guiding inclined surface forms an angle with the first driving inclined surface, and the end of the traction rope abuts against the first driving inclined surface and the first guiding inclined surface within the range of the angle.

[0102] Furthermore, the wheeled mobile device further comprises a retaining mechanism, and when the locking member is driven to the unlocking position, the retaining mechanism is used to lock the locking member at the unlocking position, so that the unlocking operating member is maintained at a second unlocking position for releasing the locking member.

[0103] On the other hand, the utility model also provides a support frame for supporting a seat plate assembly, the support frame includes a longitudinal rod, a connecting rod and a shock-absorbing rod connected in a triangular structure; the longitudinal rod is arranged below the seat plate assembly and is fixedly connected to the seat plate assembly; the first end of the connecting rod is connected to the first end of the longitudinal rod, and the second end of the connecting rod is connected to the first end of the shock-absorbing rod; the second end of the shock-absorbing rod is connected to the longitudinal rod; the shock-absorbing rod is elastic to provide buffering support to the seat plate assembly.

[0104] Furthermore, the support frame also includes a first connecting component and a second connecting component, the first end of the first connecting component and the first end of the second connecting component are respectively pivotally connected to the second end of the connecting rod, and the second end of the first connecting component, the second end of the second connecting component and the first end of the connecting rod are respectively pivotally connected to different rods of the frame that can be folded relative to each other.

[0105] Furthermore, two support frames are configured, and the two support frames are respectively arranged on the left and right sides of the seat plate assembly; a first connecting rod is connected between the longitudinal rods of the two support frames; and / or a second connecting rod is connected between the connecting rods of the two support frames.

[0106] Further, the longitudinal rod comprises a limiting finger, which is arranged at the first end of the longitudinal rod, and the limiting finger limits the downward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

[0107] Further, the longitudinal rod comprises a limiting protrusion, wherein the limiting protrusion is arranged at the first end of the longitudinal rod, and the limiting protrusion limits the upward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

[0108] Furthermore, the support frame also includes a limiting member, a first end of the limiting member is slidably connected to the longitudinal rod, and a second end of the limiting member is pivotally connected to the connecting rod.

[0109] On the other hand, the utility model also provides a locking mechanism, comprising: two first locking members, which move in opposite directions to move to a locking position or a releasing position; a linkage assembly, comprising a fixed connection point between the two first locking members, and two pivots located on both sides of the fixed connection point, the linkage assembly being pivotally connected to the two first locking members via the two pivots; the linkage assembly being configured such that when any one of the first locking members moves, the two pivots are caused to move in opposite directions, so that the two first locking members move synchronously in opposite directions.

[0110] Furthermore, the linkage assembly includes a four-bar linkage.

[0111] Further, the linkage assembly includes a first link, a second link, a third link and a fourth link, the first link, the second link, the third link and the fourth link are connected in pairs to form four connection points, one of the four connection points is the fixed connection point, the connection point opposite to the fixed connection point among the four connection points is the central connection point, and two links among the first link, the second link, the third link and the fourth link that are connected to the central connection point are respectively connected to the two first locking members; the line connecting the fixed connection point and the central connection point is perpendicular to the moving direction of the two first locking members.

[0112] Furthermore, the locking mechanism also includes two second locking members, which are parallel to the two first locking members; the first locking member and the second locking member located on the diagonal line of the two first locking members and the two second locking members are connected by a linkage member.

[0113] Furthermore, the linkage member is a connecting rod or a traction member.

[0114] Furthermore, the linkage member is a connecting rod, the two first locking members and the two second locking members are connected via the two connecting rods, and the two connecting rods are pivotally connected at their intersection.

[0115] On the other hand, the utility model also provides a holding mechanism, which is used to hold a locking member that can slide between a locking position and a release position in the release position, and the locking member is installed on a seat plate assembly; the holding mechanism includes: a movable member, which is installed in a slideway of the seat plate assembly, and the movable member has an abutment end and a clamping end away from the abutment end; the abutment end can be pressed by a carrier placed on the seat plate assembly, and the locking member is used to lock the carrier; a reset device is used to drive the abutment end to move in a direction away from the clamping end; when the carrier is locked by the locking member, the abutment end is pressed by the carrier and moves toward the clamping end; when the locking member moves to the release position, the clamping end engages with the locking member, thereby locking the locking member in the release position.

[0116] Furthermore, the clamping end is provided with a first clamping portion, and the locking member is provided with a second clamping portion, and the second clamping portion is engaged with the first clamping portion to lock the locking member in the unlocking position.

[0117] Further, the locking member is provided with an elastic arm, and the second buckle portion is provided on the elastic arm; and / or, one of the first buckle portion and the second buckle portion is a slot, and the other is a wedge-shaped step.

[0118] Furthermore, the locking member is provided with a matching portion, and the movable member has a limiting portion located outside the slide; when the carrier releases the pressure on the movable member, the reset device drives the movable member to move, so that the limiting portion moves to the moving path of the locking member and abuts against the matching portion, thereby keeping the locking member in the unlocking position.

[0119] Further, when the carrier presses the abutting end of the movable member downward, the limiting portion moves out of the moving path of the locking member to allow the locking member to move to the locking position.

[0120] Furthermore, the locking member has a recessed portion, and the matching portion is formed on a wall of the recessed portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0121] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0122] Figures 1 to 4 A wheeled mobile device according to an embodiment of the present invention is schematically shown, wherein Figure 3 and Figure 4 The case of the vehicle is removed to show the connection between the vehicle's bracket device and the locking mechanism;

[0123] Figure 5 A frame according to an embodiment of the utility model is schematically shown;

[0124] Figures 6 to 8 A card holder assembly according to an embodiment of the utility model is schematically shown;

[0125] Fig. 9 A support structure according to an embodiment of the present utility model is schematically shown;

[0126] Fig.10 and Fig.11 A supporting structure according to another embodiment of the present invention is schematically shown;

[0127] Figure 12 to Figure 14 A schematic diagram shows a frame with a card holder assembly installed according to an embodiment of the utility model;

[0128] Fig.15 A schematic diagram is shown of a vehicle frame with a support structure installed according to an embodiment of the utility model;

[0129] Fig.16 and Fig.17 A schematic diagram shows a frame with a card holder assembly installed according to an embodiment of the utility model, wherein the frame is in the process of being folded;

[0130] Fig.18 and Fig.19 A schematic diagram shows a frame with a card holder assembly installed according to an embodiment of the utility model, wherein the frame is in a fully folded state;

[0131] Fig. 20 and Fig.21 The schematic diagram shows a card holder assembly according to an embodiment of the utility model, wherein Fig. 20 The upper housing of the seat plate assembly is removed to show the locking mechanism;

[0132] Fig. 22 and Fig.23 A locking mechanism according to an embodiment of the present utility model is schematically shown;

[0133] Fig.24 A wheeled mobile device according to an embodiment of the present invention is schematically shown, wherein the box of the carrier is removed to show the connection between the support device of the carrier and the locking mechanism;

[0134] Fig.25 and Fig.26 A locking mechanism and a carrier placed thereon according to an embodiment of the present invention are schematically shown;

[0135] Fig. 27 and Fig.28The card holder assembly according to another embodiment of the utility model is schematically shown, wherein Fig. 27 The upper housing of the seat plate assembly is removed to show the locking mechanism;

[0136] Fig.29 A schematic diagram shows a card seat assembly provided with a retaining mechanism according to an embodiment of the utility model, wherein the upper housing of the seat plate assembly is removed to show the retaining mechanism;

[0137] Fig.30 Schematically showing the Fig.29 A cross-sectional view of the retaining mechanism taken along line B3-B3, wherein a cross-sectional view of the seat plate assembly is correspondingly shown to illustrate the structural relationship between the retaining mechanism and the seat plate assembly;

[0138] Fig.31 and Fig.32 A cross-sectional view schematically shows a retaining mechanism according to an embodiment of the present utility model, wherein a carrier is placed above the seat plate assembly;

[0139] Fig.33 A cross-sectional view schematically shows a retaining mechanism according to an embodiment of the utility model;

[0140] Fig.34 A three-dimensional schematic diagram showing a wheeled mobile vehicle according to an embodiment of the utility model;

[0141] Fig.35 A three-dimensional schematic diagram of a frame according to an embodiment of the utility model is shown;

[0142] Fig.36 Show Fig.35 A three-dimensional schematic diagram of the frame shown in another angle;

[0143] Fig.37 A three-dimensional schematic diagram showing a card holder assembly according to an embodiment of the utility model;

[0144] Fig.38 Show Fig.37 The illustrated three-dimensional schematic diagram of the card seat assembly after the seat plate assembly is removed;

[0145] Fig.39 Show Fig.35 A three-dimensional schematic diagram of a frame and a seat support member mounted on the frame;

[0146] Fig.40 Show Fig.39 A three-dimensional schematic diagram of the frame and the seat support member from another angle;

[0147] Fig.41 A three-dimensional schematic diagram showing a frame and a card holder assembly installed on the frame according to an embodiment of the utility model;

[0148] Fig.42 Show Fig.41 A three-dimensional schematic diagram of the frame and the card seat assembly from another angle shown;

[0149] Fig.43 Show Fig.34 A side view of the wheeled mobile vehicle is shown;

[0150] Fig.44 Show Fig.43 A front view of the wheeled mobile vehicle is shown with the vehicle removed;

[0151] Fig.45 Show Fig.41 A side view of the frame and card holder assembly shown;

[0152] Fig.46 Show Fig.45 A side view of the frame and the card holder assembly shown in the folding process;

[0153] Fig.47 Show Fig.45 A side view of the frame and the card seat assembly shown after being fully folded;

[0154] Fig.48 Show Fig.47 A front view of the frame and card holder assembly shown;

[0155] Fig.49 A perspective view of a wheeled mobile device according to an embodiment of the utility model is schematically shown;

[0156] Fig.50 Schematically shows Fig.49 A perspective view of the frame and the card holder assembly in FIG.

[0157] Fig.51 Schematically shows Fig.50 A top view of the frame and card holder assembly is shown;

[0158] Fig.52 Schematically shows Fig.50 A side view of the frame and the card holder assembly shown in a state between the deployed state and the folded state;

[0159] Fig.53 Schematically shows Fig.50 A side view of the frame and the card holder assembly shown in a folded state;

[0160] Fig.54 Schematically shows Fig.51 A C1-C1 cross-sectional view of the card holder assembly in FIG. 1 , and the carrier is locked by the locking mechanism;

[0161] Fig.55 Schematically shows Fig.50 A bottom perspective view of the card holder assembly in FIG. 1 , wherein the lower housing is omitted;

[0162] Fig.56 Schematically shows Fig.50 A top perspective view of the card holder assembly in FIG. 1 , wherein the upper housing is omitted;

[0163] Fig.57 Schematically shows Fig.50 A three-dimensional view of the card holder assembly in FIG. 1 , wherein the upper shell and the lower shell are omitted;

[0164] Fig.58 Schematically shows Fig.51 A C1-C1 cross-sectional view of the card holder assembly in FIG. 1 , and the locking member is locked by the retaining mechanism;

[0165] Fig.59 Schematically shows Fig.51 A C1-C1 cross-sectional view of the card holder assembly in FIG. 1 , and the locking member is separated from the retaining mechanism;

[0166] Fig.60 Schematically shows Fig.49 A C2-C2 partial cross-sectional view;

[0167] Fig.61 Schematically shows Fig.51 A C3-C3 partial cross-sectional view;

[0168] Fig.62 Schematically shows Fig.57 A side view of the locking member and linkage assembly of the card holder assembly, wherein the locking member is in a locked position;

[0169] Fig.63 Schematically shows Fig.57 A side view of the locking member and linkage assembly of the card holder assembly, wherein the locking member is in a released position;

[0170] Fig.64 Schematically shows Fig.49 A three-dimensional diagram of a modified embodiment of a storage rack installed on an armrest;

[0171] Fig.65 Shows Fig.64 A top view of the armrest and storage rack shown;

[0172] Fig.66 Schematically shows Fig.64 Exploded view of the storage rack in ;

[0173] Fig.67A perspective view schematically shows a wheeled mobile device provided according to some embodiments of the present utility model, wherein the wheeled mobile device has a support assembly provided according to some embodiments of the present utility model;

[0174] Fig.68 Schematically shows Fig.67 A perspective view of the frame and card holder assembly shown;

[0175] Fig.69 Schematically shows Fig.68 A top view of some parts of the frame and the card seat assembly shown;

[0176] Fig.70 Schematically shows Fig.68 A side view of the frame and deck assembly is shown;

[0177] Fig.71 Schematically shows Fig.68 A side view of the frame and the card holder assembly shown in a state between the deployed state and the folded state;

[0178] Fig.72 Schematically shows Fig.68 A side view of the frame and the card holder assembly shown in a folded state;

[0179] Fig.73 Schematically shows Fig.68 A perspective view of the frame and the card holder assembly shown in a folded state;

[0180] Fig.74 Schematically shows Fig.68 A three-dimensional view of the first seat plate assembly shown, in which the upper housing is omitted, wherein each first locking member is in a locked position;

[0181] Fig.75 Schematically shows Fig.68 A bottom perspective view of some parts of the frame and the internal parts of the first seat plate assembly shown;

[0182] Fig.76 Schematically shows Fig.74 The structure of the first locking members and the linkage assembly, wherein each first locking member is in a released position;

[0183] Fig.77 Schematically shows Fig.68 A perspective view of the second seat plate assembly shown, in which the upper housing is omitted;

[0184] Fig.78 Schematically shows Fig.69 A U5-U5 sectional view of the second seat plate assembly is omitted in the figure, wherein each second locking member is in a locked position;

[0185] Fig.79 Schematically shows Fig.68 A cross-sectional view of the frame and the card holder assembly shown, wherein the unlocking operating member is in a state where the locking member is not unlocked;

[0186] Fig.80 Schematically shows Fig.68 A cross-sectional view of the frame and the card holder assembly shown, wherein the unlocking operating member is in a state of releasing the locking member;

[0187] Fig.81 Schematically shows Fig.69 A U1-U1 cross-sectional view of the embodiment of the present invention, wherein the first locking member is in a locked position and the engaging member of the carrier has not entered the first engaging channel;

[0188] Fig.82 Schematically shows Fig.69 A U2-U2 cross-sectional view of the embodiment of the present invention, wherein the first locking member is in a locked position, and the movable member of the retaining mechanism is pressed by the engaging member of the carrier;

[0189] Fig.83 Schematically shows Fig.68 A bottom perspective view of some parts of the first seat plate assembly and the retaining mechanism shown, wherein the first buckle portion moves to the moving path of the second buckle portion;

[0190] Fig.84 Schematically shows Fig.83 U3-U3 cross-sectional view;

[0191] Fig.85 Schematically shows Fig.68 A bottom perspective view of some parts of the first seat plate assembly and the retaining mechanism shown, wherein the first buckle portion and the second buckle portion are engaged;

[0192] Fig.86 Schematically shows Fig.68 A bottom perspective view of some parts of the first seat plate assembly and the retaining mechanism shown, wherein the first buckle portion moves out of the moving path of the second buckle portion;

[0193] Fig.87 Schematically shows Fig.68 Still another side view of the frame and card holder assembly shown;

[0194] Fig.88 Schematically shows Fig.68 Another perspective view of the frame and the card seat assembly shown;

[0195] Fig.89A perspective view schematically shows a wheeled mobile device provided according to some embodiments of the utility model, wherein the wheeled mobile device has a support assembly provided according to other embodiments of the utility model;

[0196] Fig.90 Schematically shows Fig.89 A perspective view of the frame and card holder assembly shown;

[0197] Fig.91 Schematically shows Fig.90 A bottom perspective view of the partial components of the frame and the internal components of the first seat plate assembly, wherein each first locking member is in a locked position;

[0198] Fig.92 Schematically shows Fig.90 A bottom perspective view of the partial components of the frame and the internal components of the first seat plate assembly, wherein each first locking member is in a released position;

[0199] Fig.93 Schematically shows Fig.92 A partial enlarged view of the first locking member being locked in the unlocking position by the retaining mechanism, wherein the limiting portion of the retaining mechanism and the matching portion of the first locking member are in abutment with each other;

[0200] Fig.94 Schematically shows Fig.90 U6-U6 cross-sectional view, wherein the first locking member is in a locked position, the engaging member of the carrier enters the first engaging channel, and the limiting portion of the holding mechanism and the matching portion of the first locking member are separated;

[0201] Fig.95 Schematically shows Fig.90 A bottom perspective view of some parts of the frame and the internal parts of the first seat plate assembly, wherein the first locking member is in a locked position, the engaging member of the carrier enters the first engaging channel, and the limiting portion of the holding mechanism and the matching portion of the first locking member are separated;

[0202] Fig.96 Schematically shows Fig.95 A partial enlarged view of some parts in the embodiment, wherein the first locking member is in a released position, the limiting portion of the holding mechanism and the matching portion of the first locking member are separated, and the engaging member of the carrier is ready to be moved out of the first engaging channel;

[0203] Fig.97 Schematically shows Fig.90 U6-U6 cross-sectional view, wherein the engaging member of the carrier has been moved out of the first engaging channel, the limiting portion of the retaining mechanism and the matching portion of the first locking member are in contact, and the first locking member is locked in the unlocking position;

[0204] Fig.98 Schematically shows Fig.90 A bottom perspective view of some components of the vehicle frame and the internal components of the first seat plate assembly, wherein the engaging member of the carrier has been moved out of the first engaging channel, the limiting portion of the retaining mechanism and the matching portion of the first locking member are in contact, and the first locking member is locked in the unlocking position;

[0205] Fig.99 Schematically shows Fig.90 A cross-sectional view of the frame shown in FIG. 1 , wherein the unlocking operating member is in a state where the locking member is not unlocked;

[0206] Fig.100 A three-dimensional diagram schematically showing a state in which two unlocking operating members are simultaneously in a state in which the locking members are not unlocked;

[0207] Fig.101 Schematically shows Fig.90 A cross-sectional view of the frame, wherein the unlocking operating member is in a state of releasing the locking member;

[0208] Fig.102 A perspective view schematically showing a state in which two unlocking operating members are simultaneously in a state of unlocking the locking members;

[0209] Fig.103 A perspective view schematically shows a wheeled mobile device provided according to some embodiments of the utility model, wherein the wheeled mobile device has a support assembly provided according to other embodiments of the utility model;

[0210] Fig.104 Schematically shows Fig.103 a perspective view of the frame and support assembly shown;

[0211] Fig.105 Schematically shows Fig.104 A side view of the frame and support assembly shown in a collapsed state;

[0212] Fig.106 Schematically shows Fig.104 A perspective view of the support assembly shown;

[0213] Fig.107 Schematically shows Fig.106 A three-dimensional view of some parts of the support assembly shown, in which the upper shells of the first seat plate assembly and the second seat plate assembly are omitted;

[0214] Fig.108 Schematically shows Fig.106 An exploded view of the support assembly shown;

[0215] Fig.109 Schematically shows Fig.106 An exploded view of the first pivot seat and the release member;

[0216] Fig.110 Schematically shows Fig.106 A three-dimensional diagram of the cover body and the release member;

[0217] Fig.111 Schematically shows Fig.106 Another perspective view of the support assembly shown;

[0218] Fig.112 Schematically shows Fig.106 A U4-U4 cross-sectional view of the embodiment of the present invention, wherein the support assembly is in an expanded state;

[0219] Fig.113 Schematically shows Fig.112 a view showing the support assembly in a collapsed state; and

[0220] Fig.114 Schematically shows Fig.107 An exploded view of the unlocking operating member and the first locking member is shown. DETAILED DESCRIPTION

[0221] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Although the present invention is susceptible to various modifications and alternative forms, its specific embodiments are shown in the accompanying drawings by way of example. However, the present invention should not be construed as being limited to the embodiments set forth herein, but rather, the present invention will cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the present invention.

[0222] The present invention will be described in detail below with reference to the accompanying drawings.

[0223] First embodiment

[0224] Reference Figure 1 and Figure 2 , which schematically shows a wheeled mobile device 1000 according to some embodiments of the utility model. Figure 1 is a three-dimensional diagram of the wheeled mobile device 1000 of this embodiment, Figure 2 It is a top perspective view of the wheeled mobile device 1000 .

[0225] like Figure 1As shown, the wheeled mobile device 1000 of this embodiment includes a frame 100, a base assembly 200 and a carrier 300. The frame 1000 has a structure similar to a trolley, and its specific structure will be described below. The base assembly 200 is installed on the frame 1000, and can be locked and released with the object to be locked (also referred to as the "object to be engaged", hereinafter collectively referred to as the "object"), so that the object is firmly placed thereon, thereby improving the safety of the object during movement. Moreover, by operating the base assembly 200, the user can easily install the object on the frame 100, or remove it from it.

[0226] In this embodiment, if Figure 1 As shown, the object may be a carrier 300. The carrier 300 may be, but is not limited to, a box-shaped structure. The carrier 300 is used to carry infants or animals (such as pets, etc.), and can be installed on the frame 100 through the card seat assembly 200.

[0227] Combination Figure 2 As shown, the carrier 300 includes a handle 330 and a box 340, wherein the handle 330 is used to lift the carrier 300, and the box 340 is used to carry infants or animals. When the carrier 300 is installed on the base assembly 200, the longitudinal center line M1-M1 of the carrier 300 and the longitudinal center line M2-M2 of the base assembly 200 are substantially in the same vertical plane. That is, the carrier 300 is substantially symmetrically arranged relative to the longitudinal center line M2-M2 of the base assembly 200. It should be noted that the "longitudinal center line" is the center line perpendicular to the line connecting the two ends of the handle 330 and the connection position of the carrier 300. Figure 2 The direction indicated by “F2” (i.e. longitudinal direction F2, also referred to as front-to-back direction or second direction) is the longitudinal extension direction parallel to the longitudinal center lines M1-M1 and M2-M2.

[0228] In some embodiments, Figure 2 As shown, the transverse centerline M3-M3 of the carrier 300 and the transverse centerline M4-M4 of the card base assembly 200 are substantially in the same vertical plane. At this time, the carrier 300 is substantially centered relative to the card base assembly 200. It should be noted that the "transverse centerline" is the centerline parallel to the line connecting the two ends of the handle 330 and the connection position of the carrier 300. Figure 2 The direction indicated by "F1" (i.e., the transverse direction F1, also referred to as the left-right direction or the first direction) is the transverse extension direction parallel to the transverse center lines M3-M3 and M4-M4. In some embodiments, the connecting line of the two ends of the handle 330 is parallel to the transverse center line M3-M3 of the carrier 300 and is located on the same vertical plane, so that the user can keep the carrier 300 balanced when carrying it.

[0229] It should be noted that, unless otherwise clearly specified and limited, the directional terms such as "front", "rear", "left", and "right" of the wheeled mobile device 1000 and the frame 100 in each embodiment of the present invention are based on the "front", "rear", "left", and "right" directions of the wheeled mobile device 1000 and the frame 100 in normal travel, and the arrows B and P in the figure schematically indicate the "front" and "rear" directions, and the arrows L and R schematically indicate the "left" and "right" directions. These directional terms are only used to make the description of the embodiments of the present invention clearer, and are not used to improperly limit the scope of protection of the present invention.

[0230] Reference Figure 3 and Figure 4 , Figure 3 is a perspective view of the wheeled mobile device 1000 after the box 340 of the carrier 300 is removed, and Figure 4 It is a top perspective view of the wheeled mobile device 1000 after the box 340 is removed.

[0231] like Figure 3 and Figure 4 As shown, the carrier 300 also includes a bracket device 310, the bracket device 310 includes a first bracket 3111, a second bracket 3112 and a third bracket 3113, the first bracket 3111 is located above the third bracket 3113, and the second bracket 3112 is connected between the first bracket 311 and the third bracket 313. The bracket device 310 encloses a space for accommodating the box 340. The handle 330 is connected to the first bracket 3111. The carrier 300 includes a snap-fit ​​member 311, and more specifically, the third bracket 3113 of the bracket device 310 includes a snap-fit ​​member 311. In some embodiments, the snap-fit ​​member 311 is an annular structural member (e.g., a substantially rectangular annular structure), and of course, the structure of the snap-fit ​​member 311 is not limited thereto. When the carrier 300 is mounted on the card base assembly 200, the snap-fit ​​member 311 is engaged with the card base assembly 200, so that the carrier 300 can be firmly mounted on the vehicle frame 100 through the card base assembly 200.

[0232] In some embodiments, Figure 4As shown, the card base assembly 200 provides a plurality of engagement points, wherein one engagement point is shown in the form of a partial enlarged view. When the carrier 300 is mounted on the card base assembly 200, the engagement member 311 engages with the card base assembly 200 at each engagement point. In some embodiments, the card base assembly 200, for example, provides four engagement points, which are generally symmetrically distributed relative to the longitudinal center line M1-M1 of the carrier 300 (also the longitudinal center line M2-M2 of the card base assembly 200), and symmetrically distributed relative to the transverse center line M3-M3 of the carrier 300 (also the transverse center line M4-M4 of the card base assembly 200). In some embodiments, the four engagement points are centrally symmetrically arranged on the card base assembly 200.

[0233] Therefore, the embodiment of the utility model positions the carrier 300 on the base assembly 200 symmetrically, so that the carrier 300 can be stably installed on the base assembly 200 and the frame 100. By reasonably setting the positions of the above-mentioned multiple engagement points of the engagement assembly 200, the user can easily place the carrier 300 on the frame 100 symmetrically, and the carrier 300 is also in a suitable position of the frame 100 in the front-to-back direction, so that the frame 100 can provide stable support for the carrier 300, improve the overall stability of the wheeled mobile device 1000, so that the wheeled mobile device 1000 can maintain balance during driving, and also has better impact resistance and safety.

[0234] Reference Figure 5 , which schematically shows a vehicle frame 100 according to some embodiments of the present invention.

[0235] like Figure 5 As shown, the frame 100 of this embodiment includes a front support rod 11, a rear support rod 12, an upper support rod 13, a handrail 14 and a wheel set 19. The wheel set 19 includes a front wheel 191 and a rear wheel 192, which are connected to the front support rod 11 and the rear support rod 12 respectively.

[0236] In some embodiments, the front support bar 11 may have a U-shaped structure, including two rods 111 located on the left and right sides and a first cross bar 101 connected between the two rods 111. The rear support bar 12 may include two parallel rods 121 and a rear cross bar 122 connected between the two rods 121. The upper ends of the respective rods 111 of the front support bar 11 are pivotally connected to the upper ends of the respective rods 121 of the rear support bar 12. At least one front wheel 191 is connected to the lower side of the front support bar 11. The lower ends of the two rods 122 of the rear support bar 12 are respectively connected to the corresponding rear wheels 192. Figure 5As shown, in this embodiment, two front wheels 191 are provided, and the two front wheels 191 are symmetrical and pivotally arranged on the front support rod 11. As an example, the two front wheels 191 are universal wheels. The two rear wheels 192 are respectively rotatably connected to the two rods 121 of the rear support rod 12 and can roll along the front and rear directions of the frame 100.

[0237] Although some embodiments of the present invention have been listed above, the present invention is not limited to the structure and quantity of the above components. For example, in other embodiments, the rear support bar 12 may have a U-shaped structure and connect two rear wheels 192. Alternatively, the front support bar 11 may also have a V-shaped or I-shaped structure, or only one front wheel 191 may be provided. In addition, the front wheel 192 may be a one-way wheel, or the rear wheel 192 may be a universal wheel.

[0238] In this embodiment, the distance between the two front wheels 191 is smaller than the distance between the two rear wheels 192, so as to improve the stability of the frame 100 and make it easier to turn.

[0239] Reference Figures 6 to 8 , which schematically shows a card holder assembly 200 according to some embodiments of the utility model. Specifically, Figure 6 is a three-dimensional diagram of the card holder assembly 200, Figure 7 is a side view of the card holder assembly 200, and Figure 8 For along Figure 6 A cross-sectional view taken along the cutting line B1-B1 in FIG.

[0240] like Figure 6 As shown, the card seat assembly 200 includes a seat plate assembly (also referred to as a seat plate) 2, a locking mechanism and a support structure 240. The seat plate assembly 2 includes an upper shell and a lower shell, and the locking mechanism is arranged in the seat plate assembly 2. Figure 6 The middle locking mechanism is shielded by the upper shell of the seat plate assembly 2, and the specific structure of the locking mechanism will be described below.

[0241] In some embodiments, the support structure 240 may include two support frames 241, and the two support frames 241 are respectively arranged on the left and right sides of the seat plate assembly 2 ( Figure 6 Only one support frame 241 is shown, and the other support frame 241 is blocked by the seat plate assembly 2). For example, the two support frames 241 are symmetrically arranged on both sides of the seat plate assembly 2 about the longitudinal center line M5-M5 of the seat plate assembly 2. It should be noted that the longitudinal center line M5-M5 is as follows: Figure 6 The longitudinal direction F2 is shown to extend.

[0242] Further references Figure 7 and Figure 8Each support frame 241 includes a longitudinal rod 2411, a connecting rod 2412 and a shock absorbing rod 2413, and the longitudinal rod 2411, the connecting rod 2412 and the shock absorbing rod 2413 are connected to define a triangular structure. The longitudinal rod 2411 is arranged below the seat plate assembly 2 and is fixedly connected to the seat plate assembly 2 (for example, the lower shell of the seat plate assembly 2). The first end 2412a of the connecting rod 2412 is pivotally connected to the first end 2411a of the longitudinal rod 2411 (for example, Figure 7 2413a of the shock absorbing rod 2413. The second end 2413b of the shock absorbing rod 2413 is connected to the second end 2411b of the longitudinal rod 2411. For example, the connection position of the shock absorbing rod 2413 and the longitudinal rod 2411 corresponds to the longitudinal middle and rear section of the seat plate assembly 2. In some embodiments, the shock absorbing rod 2413 is elastic to provide buffer support to the seat plate assembly 2. For example, the shock absorbing rod 2413 can adopt a compression spring, a torsion spring, a cylinder or other elastic structures.

[0243] The triangular structure of the support frame 241 enables the card holder assembly 200 to be stably arranged on the frame 1000 ( Figures 6 to 8 For details on how to set it, see the following section Figures 12 to 15 ), and by providing a shock absorbing rod 2413, when the frame 1000 is bumped, it can provide a certain degree of cushioning for the objects installed on the seat plate assembly 2.

[0244] In this embodiment, the upper end of the shock-absorbing rod 2413 is connected to the second end 2411b of the longitudinal rod 2411 (corresponding to the middle and rear section of the seat plate assembly 2), and the shock-absorbing rod 2413 has a better shock-absorbing stroke, thereby providing a better shock-absorbing effect. However, the utility model is not limited to this. In other embodiments, by adjusting the length of the longitudinal rod 2411 to adjust the relative position relationship between the connection position of the shock-absorbing rod 2413 and the longitudinal rod 2411 and the seat plate assembly 2, the buffering capacity of the support frame 241 can be adjusted. For example, the connection position of the shock-absorbing rod 2413 and the longitudinal rod 2411 corresponds to the central position, the rear end, etc. of the seat plate assembly 2. Of course, in some embodiments, the buffering capacity of the support frame 241 can also be adjusted by setting the angle between the connecting rod 2412 and the longitudinal rod 2411, the angle between the connecting rod 2412 and the shock absorbing rod 2413, and / or the angle between the shock absorbing rod 2413 and the longitudinal rod 2411 within a preset range, and adjusting the length of the connecting rod 2412. In some embodiments, when the shock absorbing rod 2413 adopts a pressure spring, the elastic coefficient of the shock absorbing rod 2413 can be adjusted to achieve a better shock absorbing effect. For example, the elastic coefficient of the shock absorbing rod 2413 can be changed by changing the parameters such as the spring pitch, diameter and material of the compression spring. When the shock absorbing rod 2413 adopts a cylinder, a better shock absorbing effect can be achieved by changing the pressure strength of the cylinder.

[0245] In addition, combined Figure 7 and Figure 8 As shown, the longitudinal rod 2411 further includes a limit finger 2411c, which is disposed at the first end 2411a of the longitudinal rod 2411 and protrudes (protrudes downward) toward the connecting rod 2412. The limit finger 2411c is used to limit the angle at which the longitudinal rod 2411 pivots downward relative to the connecting rod 2412. When the wheeled mobile device 1000 travels on a bumpy road, the shock absorbing rod 2413 is deformed (e.g., shortened or bent) to provide a buffering effect, so that the longitudinal rod 2411 pivots downward relative to the connecting rod 2412. When the limit finger 2411c arranged below the longitudinal rod 2411 abuts against the connecting rod 2412, the longitudinal rod 2411 will not continue to pivot downward (that is, the angle between the longitudinal rod 2411 and the connecting rod 2412 will not continue to decrease), thereby preventing the longitudinal rod 2411 from being too inclination with respect to the horizontal plane, and thereby preventing the seat plate assembly 2 and the objects arranged thereon from being tilted too much, thereby improving safety and driving stability.

[0246] like Figure 8As shown, in some embodiments, the longitudinal rod 2411 may further include a limiting protrusion 2411d, the limiting protrusion 2411d is arranged at the first end 2411a of the longitudinal rod 2411, and the limiting protrusion 2411d and the limiting finger 2411c are, for example, located at opposite sides of the first end 2411a of the longitudinal rod 2411. The limiting protrusion 2411d, for example, protrudes upward. In some embodiments, the limiting protrusion 2411d is between the longitudinal rod 2411 and the upper shell of the seat plate assembly 2. The limiting protrusion 2411d is used to limit the angle of the longitudinal rod 2411 pivoting upward relative to the connecting rod 2412. For example, as described above, when the wheeled mobile device 1000 travels on a bumpy road, the longitudinal rod 2411 will pivot downward or upward relative to the connecting rod 2412 as the shock absorbing rod 2413 deforms or recovers its deformation. When the shock absorbing rod 2413 recovers its deformation, it will apply a force to the longitudinal rod 2411 to make the longitudinal rod 2411 pivot upward. When the longitudinal rod 2411 pivots upward, the limiting protrusion 2411d can abut against the structure on the connecting rod 2412, thereby preventing the longitudinal rod 2411 and the seat plate assembly 2 from pivoting upward at an excessive angle and causing the connection between the longitudinal rod 2411 and the connecting rod 2412 to break. In addition, when the seat plate assembly 2 is connected to the frame 100 ( Figure 8 After being folded as a whole (see below for the specific folding process), Figures 16 to 19 ), the user can lift the entire frame structure by pulling the front and rear ends of the seat plate assembly 2. At this time, the limiting protrusion 2411d can prevent the seat plate assembly 2 from turning over due to the large force applied to the rear end of the seat plate assembly 2, thereby further improving the safety of use and the structural stability of the wheeled mobile device 1000.

[0247] Combined with reference Fig. 9 , which schematically shows a support structure 240 according to some embodiments of the present invention.

[0248] In some embodiments, the support structure 240 further includes a crossbar or a U-shaped first connecting rod 242, and the first connecting rod 242 is connected between the longitudinal rods 2411 of the two support frames 241. Fig. 9As shown, the first connecting rod 242 connects the second ends 2411b of the longitudinal rods 2411 of the two support frames 241 together. Optionally, the second ends 2411b of the longitudinal rods 2411 of the two support frames 241 are respectively sleeved on the two ends of the first connecting rod 242. In other embodiments, the support structure 240 also includes a second connecting rod 243, and the second connecting rod 243 is connected between the connecting rods 2412 of the two support frames 241. In some embodiments, the first connecting rod 242 is respectively connected to or integrally formed with the first ends 2411a of the two longitudinal rods 2411, and the second connecting rod 243 is respectively connected to or integrally formed with the second ends 2411b of the two longitudinal rods 2411, and the first connecting rod 242, the two longitudinal rods 2411, and the second connecting rod 243 define a rectangular frame structure.

[0249] See also Fig.10 and Fig.11 The supporting structure 240 according to some other embodiments of the present invention is schematically shown. Fig.10 shows a perspective view of the support structure 240, and Fig.11 A plan view of the support structure 240 is shown as viewed from the inside.

[0250] Fig.10 The support structure 240 shown has Fig. 9 The support structure 240 shown is similar in structure and also includes two support frames 241 . Each support frame 241 includes a longitudinal rod 2411 , a connecting rod 2412 and a shock absorbing rod 2413 . Fig.10 The support structure 240 is shown with Fig. 9 The main difference of the support structure 240 shown is that the support frame 241 may further include a stopper 2414 .

[0251] Combination Fig.11 As shown, the first end 2414a of the stopper 2414 is slidably connected to the longitudinal rod 2411, and the second end 2414b of the stopper 2414 is pivotally connected to the second end 2412b of the connecting rod 2412. In some embodiments, a limit groove 2414c is provided at the first end 2414a of the stopper 2414, and a pin 2411e is provided at the middle section of the longitudinal rod 2411. The stopper 2414 can slide vertically relative to the longitudinal rod 2411 through the cooperation between the limit groove 2414c and the pin 2411e.

[0252] Optionally, when the support structure 240 is in Fig.11 In the initial state shown in FIG. 1 , under the support of the shock absorbing rod 2413, the pin 2411e is located at the uppermost end of the limiting groove 2414c, and the angle between the longitudinal rod 2411 and the connecting rod 2412 reaches the maximum angle. At this time, the limiting member 2414 is substantially perpendicular to the longitudinal rod 2411 (the limiting member 2414 is, for example, parallel to Fig.11 The upper and lower directions D3 shown in the figure). When the wheeled mobile device 1000 travels on a bumpy road, the shock absorbing rod 2413 is deformed (for example, shortened or bent) to provide a buffering effect, so that the longitudinal rod 2411 pivots downward relative to the connecting rod 2412. At this time, the limiting member 2414 pivots around the connection point between its second end 2414b and the connecting rod 2412, and the pin 2411e of the longitudinal rod 2411 slides downward along the limiting groove 2414c. The lower end of the limiting groove 2414c limits the downward sliding stroke of the pin 2411e of the longitudinal rod 2411, thereby limiting the pivoting of the longitudinal rod 2411 relative to the connecting rod 2412 within a certain angle range. In this way, the longitudinal rod 2411 and the seat plate assembly 2 ( Fig.11 Not shown, please refer to Figures 6 to 8 The seat plate assembly 2 in the figure is tilted downward at a large angle relative to the connecting rod 2412, which can also prevent the longitudinal rod 2411 and the seat plate assembly 2 from turning outward (i.e., the angle between the longitudinal rod 2411 and the connecting rod 2412 is greater than the maximum angle in the initial state) when the user lifts the seat plate assembly 2 to move the frame 100 in the folded state. In other words, the limiter 2414 can further limit the pivoting of the longitudinal rod 2411, and the limiter 2414 can simultaneously achieve the functions of the limiter finger 2411c and the limiter protrusion 2411d. Of course, the utility model is not limited to this. In other embodiments, the support structure 240 can only be provided with the limiter 2414, without the limiter finger 2411c and the limiter protrusion 2411d.

[0253] Reference Figure 12 to Figure 14 , which schematically shows a frame 100 provided with a card holder assembly 200 installed according to some embodiments of the utility model. Fig.12 and Fig.13 are three-dimensional views of the frame 100 and the card holder assembly 200 mounted thereon observed from different angles, and Fig.14 It is a side view of the frame 100 and the card seat assembly 200.

[0254] like Figure 12 to Figure 14 As shown, the card seat assembly 200 is installed on the frame 100 through its support structure 240. The frame 100 can be folded, and the card seat assembly 200 can be folded together with the frame 100. Fig.12 The locking mechanism is hidden, and its specific structure will be described below) is fixedly mounted on the support structure 240, and the seat plate assembly 2 provides a generally horizontal plane for placing an object (in this embodiment, the carrier 300). Fig.15The support structure 240 further includes a first connection member 244 and a second connection member 245, and the first connection member 244 and the second connection member 245 are respectively pivotally connected to the frame 100. Through the arrangement of the first connection member 244 and the second connection member 245, the card seat assembly 200 can be folded together with the folding of the frame 100. The specific connection method between the support structure 240 and the frame 100, and the mechanism of folding the card seat assembly 200 together with the frame 100 will be described below.

[0255] Please refer to Fig.15 , which schematically shows a frame 100 with a support structure 240 installed according to some embodiments of the utility model, and the frame 100 is in an unfolded state. Fig.15 As shown, one end of the first connecting member 244 and one end of the second connecting member 245 are respectively pivotally connected to the second end 2412b of the connecting rod 2412, and the other end of the first connecting member 244, the other end of the second connecting member 245, and the first end 2412a of the connecting rod 2412 are respectively pivotally connected to different rods on the frame 100. Through this connection between the first connecting member 244 and the second connecting member 245, the support structure 240 can be pivotally mounted on the frame 100. When the frame 100 is in the unfolded state, the support structure 240 is in a position for supporting the card seat assembly 200 (for clarity, Fig.15 (a) The structure of the card seat assembly 200 except the support structure 240 is removed.) When the frame 100 is folded, the support structure 240 can rotate relative to the frame 100 to be folded together with the frame 100.

[0256] In some embodiments, Fig.15 As shown, one end of the first connecting member 244 is pivotally connected to the second end 2412b of the connecting rod 2412, and the other end of the first connecting member 244 is pivotally connected to the upper support rod 13 of the frame 100. One end of the second connecting member 245 is pivotally connected to the second end 2412b of the connecting rod 2412, and the other end of the second connecting member 245 is pivotally connected to the rear support rod 12. The first end 2412a of the connecting rod 2412 is pivotally connected to the front support rod 11, so that the support frame 241 together with the entire card seat assembly 200 can pivot with the pivot of the frame 100, thereby achieving overall folding. Fig.15 In some embodiments, one end of the first connecting member 244, one end of the second connecting member 245, and the second end 2412b of the connecting rod 2412 are pivotally connected at a pivot point N1. The other end of the first connecting member 244 is pivotally connected to the upper support rod 13 of the frame 100 at a pivot point N2. The other end of the second connecting member 245 is pivotally connected to the rear support rod 12 at a pivot point N3. The first end 2412a of the connecting rod 2412 is pivotally connected to the front support rod 11 at a pivot point N4.

[0257] Reference Figures 16 to 19 , which schematically shows the folding process of the frame 100 with the card seat assembly 200 installed according to some embodiments of the utility model. Fig.16 and Fig.17 The three-dimensional view and the side view of the frame 100 and the card seat assembly 200 are shown in the process of folding the frame 100. Fig.18 and Fig.19 The figure shows the front view and the side view of the frame 100 and the card seat assembly 200 after the frame 100 is completely folded.

[0258] like Fig.16 As shown, the frame 100 of this embodiment can be folded for easy carrying and storage. Specifically, the armrest 14 of the frame 100 is pivotally connected to the upper support rod 13 through the pivot portion 117 so as to be foldable relative to the upper support rod 13. The front support rod 11, the rear support rod 12 and the upper support rod 13 are pivotally connected to the pivot portion (also referred to as the pivot point) 118 and can be folded relative to each other. In addition, when the frame 100 is folded, it can also drive the support structure 240 to pivot, so that the card seat assembly 200 installed on the support structure 240 can also pivot as the frame 100 is folded.

[0259] See also Fig.17 The first connecting component 244 of the supporting structure 240 is pivotally connected to the upper support rod 13 of the frame 100 at a pivot point N2, the second connecting component 245 is pivotally connected to the rear support rod 12 at a pivot point N3, the connecting rod 2412 is pivotally connected to the front support rod 11 at a pivot point N4, and the first connecting component 244, the second connecting component 245, and the connecting rod 2412 are pivotally connected at a pivot point N1. Through the above connection relationship, the first connecting member 244, the second connecting member 245, the upper support rod 13 and the rear support rod 12 form a four-bar linkage mechanism through the pivot portion 118, the pivot points N1, N2, and N3, the front support rod 11, the rear support rod 12, the second connecting member 245 and the connecting rod 2412 form a four-bar linkage mechanism through the pivot portion 118, the pivot points N1, N3, and N4, and the front support rod 11, the upper support rod 13, the first connecting member 244 and the connecting rod 2412 form a four-bar linkage mechanism through the pivot portion 118, the pivot points N1, N2, and N4, so that the card seat assembly 200 can pivot with the folding of the frame 100, so as to be stored in the overall structure of the frame 100 (the fully folded state of the frame 100 is as shown in FIG. Fig.19 shown).

[0260] Recombination Fig.18 and Fig.19When the frame 100 is completely folded, the front support rod 11, the rear support rod 12, the upper support rod 13, and the armrest 14 are folded to the closest position relative to each other, and the rear support rod 12 is located between the front support rod 11 and the upper support rod 13. The card seat assembly 200 is pivoted relative to the frame 100 and stored between the upper support rod 13 and the front support rod 11.

[0261] In addition, if Fig.18 As shown, the seat plate assembly 2 may include a handle 29. When the frame 100 and the card seat assembly 200 are completely folded, the handle 29 is close to the top of the folded frame 100, so that the user can easily grab the handle 29 to move the frame 100 and the card seat assembly 200.

[0262] Reference Fig. 20 and Fig.21 , which schematically shows a card holder assembly 200 according to some embodiments of the present utility model. Fig. 20 and Fig.21 is a three-dimensional diagram of the card seat assembly 200, wherein Fig. 20 The upper shell of the seat plate assembly 2 is removed to facilitate observation of the locking mechanism 21 located inside the seat plate assembly 2 .

[0263] Combination Fig. 20 and Fig.21 It can be seen that the locking mechanism 21 is installed in the seat plate assembly 2 for locking and releasing an object (eg, a sleeping box) located on the seat plate assembly 2 .

[0264] like Fig. 20 As shown, the locking mechanism 21 includes at least one unlocking operating member 212 and at least one locking member 211. The unlocking operating member 212 is disposed on the seat plate assembly 2 and is movable relative to the seat plate assembly 2 between a locked state (also referred to as a second locked position) and a unlocked state (also referred to as a second unlocked position). The locking member 211 is capable of correspondingly moving with the movement of the unlocking operating member 212, so as to correspondingly move between a locked position (also referred to as a first locked position) and a unlocked position (also referred to as a first unlocked position). In some embodiments, when the unlocking operating member 212 is in a position such as Fig.21 In the locked state shown, at least a portion of the unlocking operating member 212 protrudes from the seat plate assembly 2. When the unlocking operating member 212 is in the locked state, the locking member 211 is in the locked position, and the locking member 211 locks the object placed on the seat plate assembly 2. When the unlocking operating member 212 is pressed and moves inward from the locked state to the unlocked state, the locking member 211 moves to the unlocking position along with the movement of the unlocking operating member 212, thereby releasing the object on the seat plate assembly 2.

[0265] like Fig. 20As shown, in some embodiments, at least one locking member 211 may include multiple first locking members 211A, and the multiple first locking members 211A may be connected by a linkage assembly 25. The linkage assembly 25 allows the multiple first locking members 211 located on the same side (front side, rear side, left side or right side) of the seat plate assembly 2 to move synchronously. In this embodiment, the multiple first locking members 211A are simultaneously located on the front side of the seat plate assembly 2, and the multiple first locking members 211A may also be referred to as front locking members. In some embodiments, the multiple first locking members 211A can be rigidly connected (i.e., fixedly connected) to move synchronously in the same direction. Alternatively, in some embodiments, the multiple first locking members 211A can be connected by a linkage assembly such as Fig. 20 The plurality of second locking members 211B are connected to the seat plate assembly 2 and move synchronously in opposite directions. In some embodiments, at least one locking member 211 may also include a plurality of second locking members 211B, and the plurality of second locking members 211B are simultaneously located on the other side of the seat plate assembly 2, opposite to the plurality of first locking members 211A. In some embodiments, the plurality of second locking members 211B may be connected by another linkage assembly 25, so that the plurality of locking members 211 located on the other side of the seat plate assembly 2 can move synchronously. In this embodiment, the plurality of second locking members 211B are simultaneously located on the rear side of the seat plate assembly 2, and the plurality of second locking members 211B may also be referred to as rear locking members. In some embodiments, the movement direction of the second locking member 211B is parallel to the movement direction of the first locking member 211A, or it may be referred to as the second locking member 211B being parallel to the first locking member 211A.

[0266] In other embodiments, at least one locking member 211 may include at least one first locking member 211A and at least one second locking member 211B. The first locking member 211A is disposed on one side (e.g., the front side) of the seat plate assembly 2 and is operably connected to the corresponding unlocking operating member 212, and the second locking member 211B is disposed on the other side (e.g., the rear side) of the seat plate assembly 2. The first locking member 211A and the second locking member 211B are connected via a linkage member 27, which allows the first locking member 211A and the second locking member 211B to move synchronously.

[0267] Here, the linkage assembly 25 and the linkage member 27 can be collectively referred to as a linkage device 257, which is used to connect to multiple locking members 211 (multiple first locking members 211A and / or multiple second locking members 211B) so that these locking members 211 can move accordingly with the movement of the release operating member 212, thereby achieving synchronous release or synchronous locking of the object by multiple locking members 211.

[0268] For example, Fig. 20As shown, in some embodiments of the utility model, two unlocking operating members 212 are provided. The two unlocking operating members 212 are respectively located on the lateral sides (i.e., the left and right sides) of the seat plate assembly 2, and are respectively movable between their respective locking states and unlocking states relative to the seat plate assembly 2. Correspondingly, two first locking members 211A and two second locking members 211B are also provided in this embodiment. The two first locking members 211A are movably arranged on one side of the seat plate assembly 2, and are connected (e.g., fixedly connected) to the corresponding (e.g., adjacent) unlocking operating members 212. The two second locking members 211B are movably arranged on the other side of the seat plate assembly 2, and each second locking member 211B is connected to the corresponding first locking member 211A through a linkage member 27.

[0269] In some embodiments, two first locking members 211A may be disposed on the front side of the seat plate assembly 2 and fixedly connected to the adjacent release operating member 212. Two second locking members 211B are disposed on the rear side of the seat plate assembly 2 and are connected to the two first locking members 211A through corresponding linkage members 27, respectively, so as to move synchronously with the two first locking members 211A. More specifically, as Fig. 20 and Fig.21 As shown, the two unlocking operating members 212 are disposed symmetrically on both sides of the seat plate assembly 2 relative to the center line M5-M5 of the seat plate assembly 2, and the center line M5-M5 of the seat plate assembly 2 extends along the longitudinal direction F2 of the seat plate assembly 2. The two first locking members 211A are disposed symmetrically between the two unlocking operating members 212 relative to the center line M5-M5, and each first locking member 211A is fixedly connected to the unlocking operating member 212 adjacent to it.

[0270] See also Fig.21 In some embodiments, each locking member 211 switches to the unlocking position by moving in the direction toward the center line M5-M5, and correspondingly, each locking member 211 switches to the locking position by moving in the direction away from the center line M5-M5. That is, the movement directions of the multiple locking members 211 (the first locking member 211A and the second locking member 211B) located on the same side of the center line M5-M5 are consistent. Of course, in other embodiments, a part of the locking members 211 can switch to the unlocking position by moving in the direction toward the center line M5-M5, and switch to the locking position by moving in the direction away from the center line M5-M5; while another part of the locking members 211 switches to the unlocking position by moving in the direction away from the center line M5-M5, and switches to the locking position by moving in the direction toward the center line M5-M5. That is, the movement directions of the multiple locking members 211 (the first locking member 211A and the second locking member 211B) located on the same side of the center line M5-M5 are opposite.

[0271] In some embodiments, Fig. 20 As shown, the linkage member 27 may be a traction member (e.g., a traction rope) 271. Specifically, the traction member 271 may be arranged to extend in the seat plate assembly 2, and the first locking member 211A and the second locking member 211B arranged diagonally relative to the center line M5-M5 of the seat plate assembly 2 may be connected to each other through the same traction member 271, so that the movement directions of the first locking member 211A and the second locking member 211B connected by the same traction member 271 are opposite. For example, the first locking member 211A located at the left front side is connected to the second locking member 211B at the right rear side through a traction member 271, and the first locking member 211A located at the right front side is connected to the second locking member 211B at the left rear side through another traction member 271. In this way, when any unlocking operation member 212 is operated to switch to the unlocking state, the unlocked unlocking operation member 212 drives the corresponding first locking member 211A to move toward the direction of the center line M5-M5 to switch to the unlocking position, and under the action of the traction member 271, the first locking member 211A drives the second locking member 211B connected to the first locking member 211A (diagonally arranged with the first locking member 211A) to move in the opposite direction, thereby causing the second locking member 211B to also move toward the center line M5-M5 to switch to the unlocking position. When the unlocking operation member 212 is released to switch to the locking state, the first locking member 211A and the second locking member 211B connected by the same traction member 271 both move in the direction away from the center line M5-M5 to move to the locking position synchronously.

[0272] Of course, in other embodiments, the movement directions of the multiple locking members 211 located on the same side of the center line M5-M5 are, for example, opposite, and the first locking member 211A and the second locking member 211B located on the same side of the center line M5-M5 of the seat plate assembly 2 can be connected by the same traction member 271. When the unlocking operation member 212 is operated to switch to the unlocking state, the movement directions of the first locking member 211A and the second locking member 211B connected by the same traction member 271 are still opposite, for example, the first locking member 211A moves toward the center line M5-M5 to switch to the unlocking position, and the second locking member 211B moves toward the direction away from the center line M5-M5 to switch to the unlocking position.

[0273] In this embodiment, the traction member 271 may be a steel wire, which is covered by a steel wire sleeve and hidden in the seat plate assembly 2. In other embodiments, the traction member 271 may also be a flexible member such as a composite material wire.

[0274] like Fig. 20As shown, in some embodiments, a linkage assembly 25 may be provided between the two first locking members 211A and / or between the two second locking members 211B, and the distance of the linkage assembly 25 between the two first locking members 211A or the two second locking members 211B can be adjusted so that the two first locking members 211A move synchronously in opposite directions, and / or the two second locking members 211B move synchronously in opposite directions. For example, the linkage assembly 25 is a four-bar linkage mechanism, which may be formed by four sheet-like strips connected in pairs (specifically, hinged in pairs), wherein the four-bar linkage mechanism has a fixed member on the seat plate assembly 2 (in order to illustrate the structure of the locking mechanism 21, Fig. 20 The upper shell of the seat plate assembly 2 is removed from the fixed pivot point, and the fixed pivot point can be extended to both sides (corresponding to the locked state of the release operating member 212) and shortened (corresponding to the unlocked state of the release operating member 212) with the position of the fixed pivot point as the center line.

[0275] See also Fig. 20 Specifically, the four-link connection mechanism includes a first link 251, a second link 252, a third link 253 and a fourth link 254, and the first link 251, the second link 252, the third link 253 and the fourth link 254 are connected in pairs to form four connection points, and the four connection points correspond to the pivots A1, A2, A3 and A4. One of the four connection points is a fixed pivot point (or a fixed connection point). More specifically, the pivot A1 is fixed to the fixed structure of the card seat assembly 200 (such as the seat plate assembly 2) as a fixed pivot point. The third link 253 and the fourth link 254 connected to the central connection point (corresponding to the pivot A2) opposite to the fixed pivot point are respectively connected to the two first locking members 211A or the two second locking members 211B through the pivot A5 and the pivot A6. That is, taking the linkage assembly 25 located between the two first locking members 211A as an example, the linkage assembly 25 includes a fixed pivot point (pivot A1) located between the two first locking members 211A, and the linkage assembly 25 is pivotally connected to the first locking members 211A on both sides through the pivots located on both sides of the fixed pivot point (pivot A5 on the third link 253 and pivot A6 on the fourth link 254), and the distance between the pivot A5 and the pivot A6 corresponds to the length of the linkage assembly 25 between the two first locking members 211A. When a linkage assembly is provided between the two second locking members 211B, the structure of the linkage assembly and its connection relationship with the two second locking members 211B can refer to the structure of the linkage assembly 25 and its connection relationship with the two first locking members 211A. That is, the two second locking members 211B have a configuration corresponding to the two first locking members 211A.

[0276] Of course, in some embodiments, when the moving directions of the first locking member 211A and the second locking member 211B located on the same side of the center line M5-M5 are parallel to the second direction F2, a linkage assembly 25 may be provided between the first locking member 211A and the second locking member 211B located on the same side of the center line M5-M5.

[0277] Through the linkage assembly 25 as described above, when any unlocking operating member 212 moves from the locked state to the unlocked state, the locking member 211 correspondingly connected to the unlocking operating member 212 moves along with the unlocking operating member 212 in the same direction, the pivot A1 of the linkage assembly 25 remains stationary, and the pivot A2 moves in a direction perpendicular to the direction of movement of the locking member 211. That is, the line connecting the fixed connection point and the central connection point is perpendicular to the direction of movement of the two first locking members 211A.

[0278] The unlocking and operating process of the card holder assembly 200 equipped with the linkage assembly 25 and the linkage member 27 (for example, the traction member 271) is as follows: when the unlocking operating member 212 is in the locked state, the user can operate any of the unlocking operating members 212 to move the unlocking operating member 212 from the locked state to the unlocked state, and the unlocking operating member 212 moving to the unlocked state drives the first locking member 211A connected thereto to move. Under the action of the linkage assembly 25, the two first locking members 211A synchronously move in the opposite direction (for example, approach each other) to move to the unlocking position, and under the action of the linkage member 27, the two first locking members 211A drive the two second locking members 211B to move in the opposite direction (for example, approach each other) to move to the unlocking position. The two first locking members 211A and the two second locking members 211B move to the unlocking position at the same time, that is, the object locked by the card holder assembly 200 can be released. On the contrary, when the unlocking operating member 212 moves from the unlocking state to the locking state, the two first locking members 211A move away from each other synchronously to the locking position, and the two second locking members 211B move away from each other synchronously to the locking position under the action of the linkage assembly 25 and the linkage member 27. That is, when any one of the first locking members 211A moves, the pivot axis A5 and the pivot axis A6 move in opposite directions.

[0279] Of course, in other embodiments, when the moving directions of the two first locking members 211A are consistent, the two first locking members 211A and / or the two second locking members 211B may also move synchronously in the same direction through other forms of linkage components 25 .

[0280] In addition, if Fig. 20As shown, the card base assembly 200 also includes an elastic device 24, which provides a force to drive the unlocking operating member 212 to be in or restored to a locked state, so as to drive the locking member 211 to return to the locked position. In some embodiments, the elastic device 24 is arranged between the two first locking members 211A, and provides a force to drive the two first locking members 211A away from each other, that is, to provide a force to move the two first locking members 211A to the locked position. Optionally, the elastic device 24 can also be arranged between the two second locking members 211B, and provides a force to drive the two second locking members 211B away from each other, that is, to provide a force to move the two second locking members 211B to the locked position. For example, the elastic device 24 can be a compression spring. In other embodiments, when multiple locking members 211 on the same side move in the same direction to synchronously move to the unlocking position or the locking position, the multiple locking members 211 on the same side can be fixedly connected, and can be fixed in the fixed structure of the card base assembly 200 (for example, Fig.21 An elastic device 24 is provided between the seat plate assembly 2) shown in the figure and at least one locking member 211, and the elastic device 24 applies a force to the unlocking operating member 212 to move toward the locked state through the locking member 211. The above-mentioned multiple locking members on the same side may be, for example, two first locking members 211A located on the front side, or two second locking members 211B located on the rear side, or two locking members located on the right side (the first locking member 211A on the right side and the second locking member 211B on the right side), or two locking members located on the left side (the first locking member 211A on the left side and the second locking member 211B on the left side. It should be noted that the "front side", "rear side", "right side" and "left side" here are all for Fig. 20 The directions shown, for example, Fig. 20 The lower left side corresponds to the front side of the card base assembly 200, the upper right side corresponds to the rear side of the card base assembly 200, and so on.

[0281] In addition, the elastic device 24 can also be arranged between at least one locking member 211 and the seat plate assembly 2 (for example, when two first locking members 211A are fixedly connected or two second locking members 211B are fixedly connected) to provide a force through the locking member 211 to drive the release operating member 212 to be in or restore to a locked state.

[0282] like Fig. 20As shown, in some embodiments, the two first locking members 211A are respectively fixedly connected to the corresponding unlocking operating members 212 through the corresponding sliding members 225. Each sliding member 225 can slide in the slide groove of the locking mechanism 21, so that when the user performs the unlocking operation on any unlocking operating member 212, the first locking member 211A and the unlocking operating member 212 connected together by the same sliding member 225 slide synchronously, and under the action of the linkage assembly 25, the two first locking members 211A slide toward each other and move to the unlocking position. Of course, in other embodiments, the first locking member 211A and the corresponding unlocking operating member 212 can also be connected by other means, such as bolt connection, bonding, etc. Optionally, the sliding member 225 can be integrally formed with the corresponding unlocking operating member 212.

[0283] In addition, in some embodiments, please also refer to Fig. 20 and Fig.21 One end of the first locking member 211A is provided with a locking portion 2111 (shown in FIG. Fig.21 ), an opening 2011 is provided at a position on the seat plate assembly 2 corresponding to the locking portion 2111. When the upper shell of the seat plate assembly 2 is installed above the locking mechanism 21, the locking portion 2111 can protrude from the opening of the seat plate assembly 2. For example, the front side of the seat plate assembly 2 has an upward protruding structure corresponding to the position of each first locking member 211A, and the upward protruding structure is provided with a snap-fitting channel (also referred to as a recessed portion) 22 at the position of the end of each first locking member 211A, and the snap-fitting channel 22 runs through the upward protruding structure along the second direction F2 to accommodate at least a portion of an object. The position of the snap-fitting channel 22 corresponds to the snap-fitting point described above. The channel wall of the snap-fitting channel 22 is provided with an opening 2011 for the locking portion 2111 to protrude from the seat plate assembly 2. The rear side of the seat plate assembly 2 (i.e., at the position corresponding to each second locking member 211B) also has the same upward protruding structure, which will not be described in detail here. When an object is placed on the seat assembly 2, the snap-fit ​​channel 22 accommodates at least a portion of the object (e.g., the support device of the sleeping box, more specifically, the snap-fit ​​member 311), and the locking portion 2111 protrudes from the opening 2011 and locks the portion of the object in the snap-fit ​​channel 22. Fig.21 As shown, the locking portion 2111 is inclined downward from the upper surface of the opening protruding portion, so that the locking portion of the object can move along the inclined surface to enter the engaging channel 22.

[0284] In addition, if Fig.21 As shown, the protruding upper shell structure of the seat plate assembly 2 is also provided with a slope 213, which is located above the locking channel 22 and on the side opposite to the opening 2011 of the locking channel 22, for guiding the locking of an object (not shown in the figure) with the seat assembly 200.

[0285] Reference Figure 22 to Figure 23 , which shows the locked state and unlocked state of the locking mechanism 21 according to some embodiments of the present utility model. Specifically, Fig. 22 Shown along Fig.21 A cross-sectional view taken along line B2-B2 in FIG. 2 , wherein the locking mechanism 21 is in a locked position. Fig.23 Shows from Fig. 22 The locking mechanism 21 is shown switched from the locked position to the unlocked position.

[0286] like Fig. 22 As shown, when the locking mechanism 21 is in a locked state, each unlocking operating member 212 is in a locked state (also referred to as an initial state), and each first locking member 211A fixedly connected to the corresponding unlocking operating member 212 is located in its locked position. That is, the locking portion 2111 of each first locking member 211A extends from the seat plate assembly 2 into the corresponding engaging channel 22. At the same time, each second locking member 211B is also maintained in its locked position. At this time, the first locking member 211A and the second locking member 211B respectively lock the object on the front and rear sides of the seat plate assembly 2. At this time, the elastic device 24 located between the two first locking members 211A is in an initial state (e.g., a stretched state), and optionally, the elastic device (not shown) located between the two second locking members 211B is also in an initial state (e.g., a stretched state). In some embodiments, the pivot A2 of the four-bar connection mechanism of the linkage assembly 25 is located as shown in FIG. Fig. 22 The upper position shown is, that is, the position close to the pivot axis A1.

[0287] like Fig.23 As shown in FIG. 1 , when any unlocking operating member 212 is operated to move from the locked state to the unlocked state, the first locking member 211A fixedly connected to the unlocking operating member 212 moves to the unlocking position along with the movement of the unlocking operating member 212. At the same time, the linkage assembly 25 drives the other first locking member 211A and the unlocking operating member 212 to move synchronously, and each linkage member 27 (the traction member 271 in this embodiment) drives the corresponding second locking member 211B ( Fig.23 The locking parts 2111 of the two first locking members 211A and the locking parts (not shown) of the two second locking members 211B move synchronously. Fig.23 The elastic device 24 between the two first locking members 211A is in a state (e.g., a compressed state) tending to restore the unlocking operating member 212 to a locked state. Optionally, the elastic device (not shown) between the two second locking members 211B is also in a compressed state. In some embodiments, the pivot A2 of the four-bar linkage mechanism of the linkage assembly 25 is located at a position such as Fig.23The position shown is close to the bottom, that is, the position away from the pivot A1. That is, when the unlocking operation member 212 moves from the locked state to the unlocked state, the pivot A2 of the linkage assembly 25 moves downward substantially vertically relative to the pivot A1.

[0288] When the release operating member 212 is released, for example, under the action of the elastic device 24 between the two first locking members 211A, the two first locking members 211A move away from each other, driving the two release operating members 212 to synchronously return from their respective release states to the locked state, and at the same time driving the two second locking members 211B to move away from each other, thereby returning the locking mechanism 21 to the state as shown in FIG. Fig. 22 In other embodiments, when the unlocking operating member 212 is released, the two second locking members 211B move away from each other under the action of the elastic device between the two second locking members 211B (not shown), driving the two first locking members 211A away from each other, and driving each unlocking operating member 212 to return from its respective unlocking state to the locked state, thereby returning the locking mechanism 21 to the state shown in FIG. Fig. 22 Lock status shown.

[0289] Combined with reference Fig.24 , which shows a wheeled mobile device 1000 according to some embodiments of the present invention, wherein the box of the carrier 300 is removed to show the connection relationship between the support device 310 of the carrier 300 and the locking mechanism 21. The carrier 300 can be, but is not limited to, a sleeping box.

[0290] like Fig.24 As shown, when the carrier 300 is mounted on the seat plate assembly 2 through the locking mechanism 21 (the unlocking operating member 212 is in a locked state), the engaging member 311 (eg Fig.24 The annular structure shown in the figure is partially locked in the space defined by the engaging channel 22 and the locking portion 2111, so that the carrier 300 is locked to the seat plate assembly 2.

[0291] Further references Figure 25 to Figure 26 , which schematically shows a locking mechanism 21 and a carrier 30 placed thereon according to some embodiments of the present invention. Fig.25 The figure shows a view in which the carrier 300 is on the seat plate assembly 2 and locked by the locking mechanism 21. Fig.26 The figure shows a view in which the carrier 300 is placed on the seat plate assembly 2 but the locking mechanism 21 is in a released state.

[0292] like Fig.25 As shown, when the locking mechanism 21 is in the locked state, the locking portion 2111 of the first locking member 211A protrudes from the opening 2011 at the engaging channel 22 of the seat plate assembly 2 to lock the engaging member 311 of the carrier 300 in the engaging channel 22 .

[0293] like Fig.26 As shown, when the locking mechanism 21 returns from the locked state to the unlocked state, the locking portion 2111 retracts into the seat plate assembly 2 (for example, the opening 2011 at the engaging channel 22). At this time, the engaging member 311 of the carrier 30 can be moved out of the engaging channel 22, that is, the carrier 30 can be removed.

[0294] Reference Figure 27 to Figure 28 , which shows a card seat assembly 200 according to some other embodiments of the utility model, wherein the upper shell of the seat plate assembly 2 is removed to show the locking mechanism 21.

[0295] In other embodiments of the present invention, Fig. 27 As shown, the linkage 27 may include at least one connecting rod 272. Specifically, each connecting rod 272 may connect the two locking members 211 located on the front and rear sides of the card holder assembly 200, in particular, the first locking member 211A and the second locking member 211B arranged diagonally. In some examples, the two ends of the two connecting rods 272 are pivotally connected to the first locking member 211A and the second locking member 211B located at the diagonal, respectively, and the two connecting rods 272 are arranged crosswise, and an angle θ is formed between the two connecting rods 272. In some embodiments, the two connecting rods 272 are connected at the intersection of the two. More specifically, the two connecting rods 272 are connected at the intersection of the two by a pivot 2721 ( Fig.29 ) are pivotally connected. The angle θ corresponds to the angle defined by the connection points of the two connecting rods 272 and the two second locking members 211B relative to the intersection of the two connecting rods 272. It can be understood that the angle θ also corresponds to the angle defined by the connection points of the two connecting rods 272 and the two first locking members 211A relative to the intersection of the two connecting rods 272.

[0296] When any unlocking operation member 212 is operated, the two first locking members 211A synchronously move toward each other and approach each other under the action of the linkage assembly 25, and the two first locking members 211A synchronously move from the locking position to the unlocking position, so that the angle θ between the two connecting rods 272 gradually decreases, and the two connecting rods 272 drive the two second locking members 211B to move toward each other and approach each other. When the unlocking operation member 212 is released, the two first locking members 211A synchronously move away from each other, and the two first locking members 211A synchronously move from the unlocking position to the locking position, and the angle θ between the two cross-connected connecting rods 272 gradually increases, so that the two second locking members 211B also move away from each other.

[0297] Combination Fig.28 It can be seen that, in some embodiments, both ends of each connecting rod 272 are pivotally connected to the corresponding first locking member 211A and the second locking member 211B from the bottom.

[0298] Reference Fig.29 , which schematically shows a card seat assembly 200 provided with a retaining mechanism 23 according to some embodiments of the utility model, wherein the upper shell of the seat plate assembly 2 is removed to show the retaining mechanism 23. Fig.29 As shown, the card base assembly 200 of the present invention further includes a retaining mechanism 23, which is disposed between the two first locking members 211A and / or between the two second locking members 211B, and is used to retain the unlocking operating member 212 in the unlocked state. That is, the retaining mechanism 23 is used to retain the card base assembly 200 in the unlocked state and retain the locking member 211 in the unlocked position. In this way, the user does not need to continuously perform the unlocking operation on the unlocking operating member 212 (e.g., press the unlocking operating member 212), and the card base assembly 200 can be maintained in the unlocked state, so that the user can remove the object above the card base assembly 200 at any time.

[0299] It should be noted that although Fig.29 FIG. 2 shows only an embodiment in which the connecting rod 272 is used to connect the corresponding first locking member 211A and the second locking member 211B. However, it should be understood that the holding mechanism 23 is also applicable to the case in which the corresponding first locking member 211A and the second locking member 211B are connected by the traction member 271 (e.g. Fig. 20 embodiment shown).

[0300] Please refer to Fig.29 and Fig.30 ,in Fig.30 Schematically showing the Fig.29 The cross-sectional view of the retaining mechanism 23 taken along the section line B3-B3 shows the structural relationship between the retaining mechanism 23 and the seat plate assembly 2. Fig.29 As shown, the holding mechanism 23 includes a touch button 2051, a buckle portion 2052 and a reset member 2055 ( Fig.29 is obscured and not shown, shown in Fig.30 The touch button 2051 is arranged on the seat plate assembly 2 ( Fig.29 Only the lower shell of the seat plate assembly 2 is shown in the figure), which can move in the vertical direction relative to the seat plate assembly 2 to allow at least a portion of the touch button 2051 to move relative to the seat plate assembly 2 (specifically, its upper shell, refer to Fig.30 ) protrudes upward. The buckle portion 2052 is movably disposed below the touch button 2051 and can move along the slide rail 2054 on the touch button 2051 in the vertical direction. For example, the buckle portion 2052 can be a bayonet. Fig.30As shown, the reset member 2055 is disposed between the fixed structure of the card seat assembly 200 (e.g., the lower shell of the seat plate assembly 2) and the touch button 2051, and the reset member 2055 provides a force to drive the touch button 2051 to protrude upward from the seat plate assembly 2. That is, under the action of the reset member 2055, the touch button 2051 can be restored from the pressed state to the initial released state.

[0301] Please refer to Fig.30 In some embodiments, the holding mechanism 23 further includes an elastic member 2053, which is disposed between the touch button 2051 and the buckle portion 2052, and is used to cooperate with the movement of the buckle portion 2052 relative to the touch button 2051. In addition, a holding hook 2102 is disposed at the lower portion of one end of the first locking member 211A away from the locking portion 2111, so as to be able to correspondingly hook the buckle portion 2052 of the holding mechanism 23. The end of the holding hook 2102 may also be provided with a chamfer so as to be more firmly engaged with the buckle portion 2052.

[0302] In addition, if Fig.30 As shown, when the vehicle is not placed on the seat plate assembly 2 and the unlocking operation member 212 has not been unlocked, the unlocking operation member 212 is in a locked state (i.e., an initial state), and the retaining mechanism 23 is also in its initial state. At this time, the trigger button 2051 of the retaining mechanism 23 protrudes from above the seat plate assembly 2, the buckle portion 2052 is separated from the retaining hook 2102 of the first locking member 211A, and the reset member 2055 and the elastic member 2053 are both in a released state, i.e., not compressed.

[0303] Combined with reference Fig.31 and Fig.32 , which schematically shows the operation process of the holding mechanism 23 when the carrier 300 is placed on the seat plate assembly 2 and the carrier 300 needs to be moved away.

[0304] like Fig.31 As shown, when the user places the carrier 300 on the seat plate assembly 2, the engaging member 311 of the carrier 300 moves downward and is engaged in the engaging channel 22 by the locking portion 2111 of the first locking member 211A, and at the same time, the bottom surface of the carrier 300 presses down the touch button 2051 and compresses the reset member 2055. The buckle portion 2052 and the elastic member 2053 connected between the touch button 2051 and the buckle portion 2052 move downward as the touch button 2051 is pressed downward. At this time, the holding mechanism 23 is in a ready state.

[0305] When the carrier 300 needs to be removed from the seat plate assembly 2, Fig.32As shown, the user can operate (for example, press) the release operating member 212, and the first locking member 211A connected to the release operating member 212 moves to the release position as the release operating member 212 moves, and the retaining hook 2102 of the first locking member 211A moves toward the retaining mechanism 23 and hooks the buckle portion 2052. More specifically, as the retaining hook 2102 moves toward the retaining mechanism 23, the end of the retaining hook 2102 (for example, through its chamfer) prompts the buckle portion 2052 to move upward relative to the touch button 2051 against the force of the elastic member 2053 (that is, the buckle portion 2052 moves upward relative to the touch button 2051 to compress the elastic member 2053). After the hook-shaped portion of the retaining hook 2102 passes over the buckle portion 2052, the buckle portion 2052 moves downward under the action of the elastic member 2053 and is hooked by the retaining hook 2102. At this time, the retaining mechanism 23 is in a retaining state, and the latch portion 2052 is maintained in a state of being engaged with the retaining hook 2102 under the downward pressure applied by the carrier 300 and the action of the elastic member 2053, thereby maintaining the release operating member 212 in the release state, and the engaging member 311 of the carrier 300 is not blocked by the locking portion 2111 (i.e., the carrier 300 continues to be in a state where it can be removed).

[0306] Next, when the carrier 300 is removed, the trigger button 2051 protrudes from above the seat plate assembly 2 again under the action of the reset member 2055, and the buckle portion 2052 moves upward with the trigger button 2051 and separates from the retaining hook 2102 of the first locking member 211A, and the unlocking operating member 212 returns to the position as shown in FIG. Fig.30 Lock status shown.

[0307] Reference Fig.33 , which shows the structure of the holding mechanism 23 according to some embodiments of the present utility model.

[0308] like Fig.33 As shown, the touch button 2051 is arranged in the slideway 2104 arranged inside the seat plate assembly 2, so that it can move up and down along the slideway 2104. The wall of the slideway 2104 is symmetrically provided with notches 2105, and the retaining hook 2102 can extend into the notch 2105 to engage with the buckle portion 2052 when moving toward the retaining mechanism 23.

[0309] In addition, if Fig.33 As shown, in some embodiments, when the carrier 300 (combined Fig.31 and Fig.32When the locking portion 2111 is installed to the seat plate assembly 2, the distance of the retraction movement of the locking portion 2111 is L1. The distance required for the retaining hook 2102 to engage with the buckle portion 2052 (i.e., the distance between the retaining hook 2102 and the farthest end of the buckle portion 2052) is L2. The distance that the unlocking operating member 212 is pressed to unlock is L3. In some embodiments, L1<L2<L3, so that the carrier 300 ( Fig.33 Not shown, see Fig.31 ) is locked on the seat plate assembly 2, the retaining hook 2102 will not hook the buckle portion 2052, and the retaining hook 2102 will hook the buckle portion 2052 only when the unlocking operating member 212 is pressed.

[0310] The card seat assembly 200 is provided with a linkage assembly 25 between the plurality of first locking members 211A, a linkage member 27 between the first locking member 211A and the second locking member 211B, and a retaining mechanism 23, so that the user can release the plurality of locking members 211 at the same time when only one of the release operating members 212 is operated, thereby providing a wheeled mobile device 1000 that is easy to operate and has a simple structure, so that the user can conveniently (for example, with one hand) move the carrier 300 away from the frame 100, which provides a better user experience for the user. Optionally, by providing a support frame 240 with a shock-absorbing effect, when the frame 100 moves, a cushioning support can be provided for the carrier 300 installed on the frame 100 and the infant or pet therein, thereby providing a more comfortable and safer wheeled mobile device.

[0311] Second embodiment

[0312] refer to Fig.34 , Fig.34 A three-dimensional schematic diagram of a wheeled mobile device 1000 according to an embodiment of the present utility model is shown.

[0313] like Fig.34 As shown, the wheeled mobile device 1000 may include a frame 100, a card seat assembly 200 and a carrier 300. The card seat assembly 200 can be installed on the frame 100, and the carrier 300 can be fixed to the frame 100 through the card seat assembly 200 so as to move together with the frame 100. In some embodiments, the carrier 300 may include a box 340 and a bracket device 310. The box 340 provides a storage space, and the storage space is used to carry infants or pets. The bracket device 310 is installed on the box 340 to support the box 340. The bracket device 310 can be engaged with the card seat assembly 200 so that the carrier 300 can be detachably mounted on the frame 100 through the bracket device 310.

[0314] The frame 100 and the base assembly 200 of the wheeled mobile device 1000 and the connection relationship therebetween will be described in detail below.

[0315] First, refer to Fig.35 and Fig.36 , Fig.35 A perspective schematic diagram showing a frame 100 according to some embodiments of the present invention, and Fig.36 Show Fig.35 The frame 100 is shown in a three-dimensional schematic diagram from another angle.

[0316] The frame 100 of the present invention may include a front support rod 11 , a rear support rod 12 and an upper support rod 13 , wherein the front support rod 11 is connected to the front wheel 191 , the rear support rod 12 is connected to the rear wheel 192 , and the upper support rod 13 is connected to the handrail 14 .

[0317] In some embodiments, Fig.35 and Fig.36 As shown, one end of the front support bar 11, one end of the rear support bar 12 and one end of the upper support bar 13 are pivotally connected to each other at a pivot portion (also referred to as a first pivot portion) 118, so that the front support bar 11, the rear support bar 12 and the upper support bar 13 can be folded relative to each other through the pivot portion 118. Specifically, the front support bar 11 can have a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connected between the two rods 111. The rear support bar 12 may include two parallel rods 121 and a rear crossbar 122 connected between the two rods 121. The upper ends of each rod 111 of the front support bar 11 are respectively pivotally connected to the upper ends of each rod 121 of the rear support bar 12 through the pivot portion 118. At least one front wheel 191 is connected to the lower side of the front support bar 11. The lower ends of the two rods 122 of the rear support bar 12 are respectively connected to the corresponding rear wheels 192. The armrest 14 is located at the upper end of the upper support rod 13 and is pivotally connected to the upper support rod 13 via a pivot portion (also referred to as a second pivot portion) 117. Of course, the present invention is not limited to the above structure. In some embodiments, the front support rod 11 may also have a V-shaped or I-shaped structure, and the rear support rod 12 may also be configured as an integrally formed U-shaped structure.

[0318] In some embodiments, Fig.35 As shown, the size of the rear wheel 192 can be larger than that of the front wheel 191 to make the overall structure of the wheeled mobile device 1000 more stable.

[0319] In addition, combined Fig.34 and Fig.35It can be seen that the frame 100 is also provided with a connecting assembly 15 (which can serve as a supporting structure of the connecting assembly 200, which will be described in detail below) for mounting the card holder assembly 200 on the frame 100. The connecting assembly 15 is pivotally connected to the frame 100, and the card holder assembly 200 can pivot as the frame 100 is folded through the connecting assembly 15. The connecting assembly 15 can be unfolded or folded.

[0320] With reference to the description in the first embodiment, when the wheeled mobile device 1000 is fully unfolded, the first direction F1 corresponds to the left-right direction, and the second direction F2 corresponds to the front-back direction.

[0321] In some embodiments, Fig.35 and Fig.36 As shown, the connection assembly 15 may include a first connecting member 151 , an auxiliary supporting member 152 and a linkage member 153 .

[0322] like Fig.35 As shown, one end (front end) of the first connecting member 151 is pivoted to the front support rod 11 at the first pivot point O1. The auxiliary support member 152 is pivoted to the other end (rear end) of the first connecting member 151 at the second pivot point O2, and the auxiliary support member 152 is pivoted to the rear support rod 12 at the third pivot point O3. One end (upper end) of the linking member 153 is pivoted to the upper support rod 13 at the fourth pivot point O4, and the other end (lower end) of the linking member 153 is pivoted to the auxiliary support member 152 at the fifth pivot point O5. In this way, when the frame 100 is folded, the auxiliary support member 152 can be driven to pivot. Among them, the fifth pivot point O5 is located between the second pivot point O2 and the third pivot point O3, and the second pivot point O2 is located between the first pivot point O1 and the fifth pivot point O5. In some embodiments, the fifth pivot point O5 can coincide with the second pivot point O2.

[0323] refer to Fig.36 In some embodiments, the linkage 153 may have an approximately S-shaped structure, so as to avoid the linkage 153 from interlocking with the rear support rod 12 and the seat plate assembly 200 when the frame 100 is folded. Fig.36 Not shown, see Fig.37) or other components. That is, the S-shaped structure of the linkage 153 forms an avoidance structure. Specifically, the approximate S-shaped structure has a first section 15311, a second section 15312 and a third section 15313 in sequence. Among them, the second section 15312 is approximately perpendicular to the first section 15311, and the third section 15313 is approximately perpendicular to the second section 15312. When the frame 100 is unfolded, the first section 15311 approximately overlaps with the upper support rod 13. Of course, the utility model is not limited to this, and the linkage 153 can also be designed to be able to avoid other shapes or structures of other components when folded. In addition, by adjusting other components so that multiple rods or components do not interfere with each other when folded, the linkage 153 can also be set in the form of a straight rod.

[0324] See also Fig.35 In some embodiments, the first connecting member 151 includes two first pipes 1511 located on the left and right sides, and one end of each first pipe 1511 is respectively connected to the rod 111 of the front support rod 11 on both sides. The auxiliary support member 152 can be a generally U-shaped structure, and the two ends of the auxiliary support member 152 are respectively connected to the other end of the first pipe 1511 of the corresponding first connecting member 151. In some embodiments, the auxiliary support member 152 includes two separate linear rods 1521, and each rod 1521 is respectively connected between the first pipe 1511 and the rod 121 on the same side (left side or rear side). Of course, the utility model is not limited to this.

[0325] In some embodiments, Fig.35 and Fig.36 As shown, when the vehicle frame 100 is unfolded, the first connecting member 151 and the auxiliary support member 152 are arranged horizontally and extend along the front-to-back direction (the second direction F2). More specifically, each first pipe 1511 of the first connecting member 151 and the pipe (hereinafter referred to as the second pipe) of the adjacent auxiliary support member 152 extend along the front-to-back direction (i.e., the second direction F2). The first pivot point O1, the second pivot point O2, the third pivot point O3 and the fifth pivot point O5 are on the same horizontal plane. In some embodiments, the first pivot point O1, the second pivot point O2, the third pivot point O3 and the fifth pivot point O5 are substantially on a straight line.

[0326] refer to Fig.37 and Fig.38 , Fig.37 A three-dimensional schematic diagram showing a card holder assembly 200 according to an embodiment of the utility model, and Fig.38 Show Fig.37 The illustrated schematic perspective view of the card holder assembly 200 after the seat plate assembly 2 is removed.

[0327] like Fig.37 and Fig.38As shown, the card seat assembly 200 includes a seat plate assembly 2 and a carrier 300 ( Fig.37 and Fig.38 Not shown, see Fig.34 ) is locked to the locking mechanism 21 on the seat plate assembly 2. The seat assembly 200 may have a plurality of engaging points for supporting and positioning the carrier 300, thereby improving the connection stability between the carrier 300 and the seat assembly 200. It is understood that each of the engaging points is respectively configured with a locking member 211. In some embodiments, the plurality of engaging points are arranged in a rectangular array on the seat plate assembly 2, so that the plurality of engaging points are arranged in at least two rows or at least two columns. For example, Fig.37 As shown, a plurality of engaging points can be symmetrically (left-right symmetrically) arranged on the card base assembly 200 along the longitudinal center line M5-M5 of the card base assembly 200, so that the carrier 300 can be more stably locked on the seat plate assembly 2 of the card base assembly 200. Preferably, four engaging points can be arranged, and the four engaging points are centrally symmetrically arranged on the card base assembly 200. That is, the four engaging points are arranged on the card base assembly 200 in a left-right symmetrical and front-back symmetrical manner.

[0328] In the absence of conflict, the structure of the card holder assembly 200 may refer to the description of the card holder assembly 200 in the first embodiment. Fig.37 and Fig.38 Specifically in this embodiment, the locking mechanism 21 includes a plurality of locking members 211, which can be connected by a linkage device so as to be able to move synchronously to the unlocking position. The linkage device can refer to the description in the first embodiment, for example, including a linkage assembly 25 and a linkage member ( Fig.38 211A and 211B). A release operating member 212 may also be installed on the seat plate assembly 2, and the release operating member 212 is used to connect with at least one locking member 211 and drive the locking member 211 to move to the release position. The card seat assembly 200 may also include an elastic device 24, and the elastic device 24 can drive the locking member 211 to move to the locking position. More specifically, in this embodiment, the locking mechanism 21 includes four locking members 211, and the four locking members 211 are two first locking members 211A and two second locking members 211B. The two first locking members 211A are located on the front side of the seat plate assembly 2, and a linkage assembly 25 can be set between the two first locking members 211A. The two second locking members 211B are located on the rear side of the seat plate assembly 2, and a linkage assembly 25 can be set between the two second locking members 211B. The structure of the linkage assembly 25 can refer to the description in the first embodiment. The first locking member 211A and the second locking member 211B located at the diagonal position can be connected by the linkage member 27 in the first embodiment.

[0329] In this embodiment, two unlocking operating members 212 are installed on the seat plate assembly 2, and the two unlocking operating members 212 are respectively connected to the two first locking members 211A. When any unlocking operating member 212 is pressed downward, under the action of the linkage device, the two first locking members 211A and the two second locking members 211B respectively slide synchronously along the left and right directions and move to the unlocking position at the same time.

[0330] In some embodiments, the linkage device can omit the linkage member and retain each linkage assembly 25. In some embodiments, the first locking member 211A and the second locking member 211B are not linked, and the first locking member 211A and the second locking member 211B can be driven to the unlocked position by different unlocking operating members 212.

[0331] In some embodiments, Fig.37 As shown, the seat plate assembly 2 may have a first extension portion 21011. The first extension portion 21011 extends from one end (e.g., the rear end) of the seat plate assembly 2. Fig.34 and Fig.35 More specifically, the first extension portion 21011 may extend backwards from the middle of the rear end of the seat plate assembly 2 by a certain distance to provide a larger support surface, thereby more stably supporting the vehicle 300 ( Fig.37 100). It should be noted that the "rear end" mentioned here refers to the rear side relative to the frame 100 (for example, the rear wheel 192 is located at the rear side of the frame 100). The front, back, left, and right sides of the seat plate assembly 2 correspond to the front, back, left, and right sides of the frame 100. In some embodiments, the first extension 21011 can also be configured as a handle to facilitate lifting and moving the folded frame 100 and the seat assembly 200. In some embodiments, the seat plate assembly 2 can also be configured as a hollow form, for example Fig.37 The annular structure shown (i.e., the middle area of ​​the seat plate assembly 2 is hollowed out) allows the entire frame structure to be grasped, lifted or moved by the hollow design of the seat plate assembly 2 when the frame 100 and the seat assembly 200 are folded together (see, for example, Fig.48 ).

[0332] like Fig.37 As shown, in some embodiments, the seat plate assembly 2 may further include a second extension portion 21012. The second extension portion 21012 extends from the front end of the seat plate assembly 2 (i.e., the end close to the front wheel 191) to provide an additional support surface, thereby helping to improve the stability of the carrier 300 on the frame 100 and facilitating the balance of the carrier 300 after being engaged with the entire frame 100.

[0333] In some embodiments, Fig.37 and Fig.38As shown, the card seat assembly 200 can be set on the seat plate support 2031 and connected to the frame 100 through the seat plate support 2031 (see Fig.34 ). In some embodiments, Fig.38 As shown, the seat support 2031 may be a U-shaped structure, but the present invention is not limited thereto. Fig.39 and Fig.40 Provide a detailed description.

[0334] refer to Fig.39 and Fig.40 , Fig.39 Show Fig.35 The frame 100 and the seat support 2031 mounted on the frame 100 are shown in FIG. Fig.40 Show Fig.39 The frame 100 and the seat support 2031 are shown in a three-dimensional schematic diagram from another angle.

[0335] In some embodiments, Fig.39 and Fig.40 As shown, the seat plate support 2031 is arranged on the inner side of the auxiliary support 152 and connected to the auxiliary support 152, so that the seat plate support 2031 can move synchronously with the auxiliary support 152, thereby driving the card seat assembly 200 ( Fig.39 and Fig.40 Not shown, see Fig.41 ) to achieve synchronous folding of the card seat assembly 200 and the frame 100. In some embodiments, the other end of the first connecting member 151 is inserted between the seat plate support 2031 and the auxiliary support 152. For example, the auxiliary support 152 and the seat plate support 2031 are connected to each other at the second pivot point O2 through a pivot passing through the first connecting member 151, and the auxiliary support 152 and the seat plate support 2031 are arranged on both sides of the first connecting member 151, so that the auxiliary support 152 and the seat plate support 2031 can be synchronously pivoted relative to the first connecting member 151. In addition, the other end of the linking member 153 (that is, the end where the linking member 153 is connected to the auxiliary support 152) is inserted between the seat plate support 2031 and the auxiliary support 152. In some embodiments, the auxiliary support 152 can be fixedly connected to the seat plate support 2031, or the two can be integrally formed. In other embodiments, both the auxiliary support member 152 and the seat plate support member 2031 may be connected to the seat assembly 200 .

[0336] It should be noted that in the above embodiment, the fixedly connected auxiliary support member 152 and the seat support member 2031 can be regarded as the second connecting member in combination. However, it should be understood that the second connecting member can also only include the auxiliary support member 152, and the auxiliary support member 152 can be a U-shaped structure.

[0337] Further references Figure 41 to Figure 44 , Fig.41 A three-dimensional schematic diagram of a frame 100 of the present invention and a card holder assembly 200 installed on the frame 100 is shown. Fig.42 Show Fig.41 The three-dimensional schematic diagram of the frame 100 and the card seat assembly 200 is shown in another angle. Fig.43 Show Fig.34 A side view of the wheeled mobile vehicle 1000 is shown, and Fig.44 Show Fig.43 Wheeled mobile vehicle 1000 is shown in front view after vehicle 300 is removed.

[0338] like Fig.41 and Fig.42 As shown, when the frame 100 is unfolded, the card seat assembly 200 of the present invention can be positioned at a lower position of the frame 100. In some embodiments, the card seat assembly 200 is positioned at a height lower than the pivot portion 118. For example, the card seat assembly 200 can be close to the lower end of the rod 111 of the front support rod 11, or the card seat assembly 200 and the lower end of the rod 111 of the front support rod 11 are at approximately the same height. More specifically, in combination with Fig.43 As shown, the height H1 of the position where the card base assembly 200 is located can be less than the median value of the overall height H2 of the frame 100. In some embodiments, the height H1 of the position where the card base assembly 200 is located can be close to or even less than one-third of the overall height H2 of the frame 100. By such a setting, that is, the card base assembly 200 is set at a lower position of the frame 100, the user can more conveniently and labor-savingly put the carrier 300 (see Fig.34 ) is placed on the card base assembly 200 and positioned, which improves the convenience of use and user experience. In addition, the frame 100 can be applied to more vehicles 300 of different sizes (such as different heights), thereby improving the adaptability of use.

[0339] In some embodiments, Fig.41 and Fig.42 As shown, the center of gravity G of the card seat assembly 200 disposed at a lower position can be offset toward the rear wheel 192 relative to the pivot portion 118, which helps to improve the stability of the frame 100. Fig.43) is installed on the vehicle frame 100, because the center of gravity G of the card base assembly 200 is further back than the pivot portion 118, the wheeled mobile device 1000 is less likely to overturn due to the pet in the carrier 300 approaching the front end of the carrier 300 (the weight of the pet is concentrated on the front end of the carrier 300). The center of gravity G of the card base assembly 200 is further back than the pivot portion 118, which helps to improve the stability of the overall structure of the wheeled mobile device 1000. For example, in some embodiments, the center of gravity G of the card base assembly 200 can be close to the plane where the two rods 121 of the rear support rod 12 are located, or the center of gravity G of the card base assembly 200 can be located in the plane where the two rods 121 of the rear support rod 12 are located.

[0340] like Fig.43 and Fig.44 As shown, when the frame 100 is unfolded, the horizontal distance L5 between the rear wheel 192 and the end of the frame 100 (e.g., at the handrail 14) is smaller than the horizontal distance L4 between the front wheel 191 and the rear wheel 192. In addition, the width W3 between the two side support rods (e.g., the upper support rod 13) can be larger than the distance W1 between the two front wheels 191, and the width W3 between the two side support rods (e.g., the upper support rod 13) can be smaller than the distance W2 between the two rear wheels 192.

[0341] Figures 45 to 48 The folding process of the frame 100 and the card seat assembly 200 is schematically shown. Fig.45 Show Fig.41 The side view of the frame 100 and the card seat assembly 200 when fully unfolded is shown. Fig.46 Show Fig.45 The side view of the frame 100 and the card seat assembly 200 shown in the middle of folding, Fig.47 Show Fig.45 The side view of the frame 100 and the card seat assembly 200 shown in FIG. 1 is fully folded, and Fig.48 Show Fig.47 The frame 100 and the card seat assembly 200 are shown in front view.

[0342] Combination Fig.45 and Fig.47As shown, the frame 100 of the utility model can be folded for easy carrying and storage. Specifically, the armrest 14 of the frame 100 is pivotally connected to the upper support rod 13 through the pivot portion 117, and can be folded relative to the upper support rod 13. The front support rod 11, the rear support rod 12 and the upper support rod 13 are pivotally connected to the pivot portion 118, and can be folded relative to each other. In addition, when the frame 100 is folded, the card seat assembly 200 can also be driven to pivot therewith through the connecting assembly 15. Specifically, in some embodiments, when the front support rod 11, the rear support rod 12 and the upper support rod 13 are folded with each other, the linkage 153 is driven and the auxiliary support member 152 is further driven to pivot, so that the seat plate support member 2031 fixedly connected to the auxiliary support member 152 and the card seat assembly 200 installed on the seat plate support member 2031 can also be pivoted with the folding of the frame 100.

[0343] In some embodiments, when the bicycle frame 100 is folded, the front support rod 11, the rear support rod 12 and the upper support rod 13 are close to each other, and the connecting assembly 15 drives the rear end of the card seat assembly 200 (for example, the end where the first extension portion 21011 is provided, that is, the end of the card seat assembly 200 close to the rear wheel 192 or the rear support rod 12) to pivot toward the pivoting portion 118. More specifically, as Fig.46 and Fig.47 As shown, as the front support rod 11, the rear support rod 12 and the upper support rod 13 are folded relative to each other, the upper support rod 13 drives the linkage 153 to pivot, and at the same time, the front support rod 11 drives the first connecting member 151 to pivot, and the auxiliary support member 152 pivots under the action of the first connecting member 151 and the linkage 153. The auxiliary support member 152 then drives the seat plate support member 2031 connected to the auxiliary support member 152 to pivot, so that the longitudinal rear end of the seat plate support member 2031 and the card seat assembly 200 disposed thereon pivots toward the pivot portion 118 (pivots upward), and the longitudinal front end of the card seat assembly 200 pivots downward. Fig.46 It can be seen from the observation that the card seat assembly 200 is folded in a manner that its upper surface is pivoted toward the front side of the frame 100. The card seat assembly 200 is stored in the overall structure of the frame 100 as the frame 100 is folded. Fig.47 The frame 100 is shown in a fully collapsed position.

[0344] refer to Fig.47 In some embodiments, when the frame 100 is fully folded, the front support rod 11, the rear support rod 12, the upper support rod 13, and the armrest 14 are folded to the closest position relative to each other, and the seat assembly 200 is stored between the front support rod 11 and the upper support rod 13 as the frame 100 pivots.

[0345] Third embodiment

[0346] Fig.491 shows a perspective view of a wheeled mobile device 1000 provided according to some embodiments of the present invention, the wheeled mobile device 1000 may include a frame 100 and a card seat assembly 200. In some embodiments, the wheeled mobile device 1000 may also include a carrier 300. Fig.49 In the illustrated embodiment, the wheeled mobile device 1000 is exemplarily described as a cart, and according to the type of the carrier 300, the cart may be a child stroller, a pet stroller, a shopping cart, etc. Of course, in some alternative embodiments, the wheeled mobile device 1000 may also be other types of products.

[0347] See also Fig.50 and Fig.51 The structure of the frame 100 shown in the figure is, in some embodiments, substantially bilaterally symmetrical. The frame 100 may include, for example, a front support rod 11, a rear support rod 12, an upper support rod 13, a handrail 14, and a connecting assembly 15. The frame 100 can be folded and has an unfolded state ( Fig.50 ) and folded state ( Fig.53 ).

[0348] See also Fig.50 , the front support bar 11 is, for example, a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connected between the two rods 111, and the first crossbar 101 extends along a first direction F1, which is equivalent to the left and right direction. At least one front wheel seat 193 is installed at the bottom of the front support bar 11. In this embodiment, two front wheel seats 193 are installed at the bottom of the front support bar 11, and the two front wheel seats 193 are arranged at intervals in the left and right directions. Each front wheel seat 193 is used to install a front wheel 191, and the front wheel 191 can be a universal wheel or a non-universal wheel. Of course, in some alternative embodiments, the front support bar 11 can also have other embodiments, for example, the front support bar 11 is a V-shaped structure or an I-shaped structure, and a front wheel seat 193 can be installed in the center of the bottom of the front support bar 11.

[0349] The rear support bar 12 is, for example, in a U-shaped structure, including two rods 121 located on the left and right sides and a rear crossbar 122 connected between the two rods 121. The upper ends of the rods 121 are, for example, respectively pivoted to the upper ends of the rods 111 of the front support bar 11 on the same side through a pivoting portion 118. The rear support bar 12 is provided with two rear wheel seats 194, which are arranged at intervals in the left and right directions. Each rear wheel seat 194 is used to install a rear wheel 192, which can be a universal wheel or a non-universal wheel. In this embodiment, the size of the rear wheel 192 is larger than the size of the front wheel 191, so that the overall structure of the wheeled mobile device 1000 is more stable. Of course, in some alternative embodiments, the size of the rear wheel 192 can be the same as the size of the front wheel 191.

[0350] The upper support rod 13 includes two rods 131 located on the left and right sides, the lower end of each rod 131 is respectively pivoted to the pivot part 118 on the same side, and the upper end of each rod 131 is respectively connected to the armrest 14. In some embodiments, the armrest 14 is, for example, a U-shaped structure, including two rods 141 located on the left and right sides, and the lower end of each rod 141 is, for example, pivoted to the rod 131 of the upper support rod 13 on the same side through the pivot part 117. In some alternative embodiments, the two rods 141 of the armrest 14 are connected to the two rods 131 through a telescopic structure, so that the height of the armrest 14 can be changed. A storage rack 140 for storing small items can be installed on the armrest 14, and the storage rack 140 has, for example, a storage cavity 1401 for accommodating cups or other items.

[0351] The connecting assembly 15 is connected to the front support rod 11, the rear support rod 12 and the upper support rod 13 respectively. When the frame 100 is folded, the front support rod 11, the rear support rod 12 and the upper support rod 13 can be folded synchronously under the action of the connecting assembly 15. In this embodiment, the base assembly 200 is connected to the connecting assembly 15 and installed on the frame 100. When the connecting assembly 15 is unfolded, it corresponds to the unfolding of the base assembly 200 and the unfolding of the frame 100. When the connecting assembly 15 is folded, it corresponds to the folding of the base assembly 200 and the folding of the frame 100.

[0352] Fig.50 An exemplary embodiment of the connection assembly 15 is shown in FIG. The connection assembly 15 includes, for example, a first coupling member 151 , an auxiliary supporting member 152 and a linking member 153 .

[0353] The first connecting member 151 includes two first tubes 1511 located at the left and right sides. The front end of each first tube 1511 is pivotally connected to the first pivot point O1 of the rod 111 of the front support rod 11 on the same side.

[0354] The auxiliary support member 152 is, for example, a U-shaped structure, including two second tubes 1521 located on the left and right sides and a second crossbar 1502 connected between the two second tubes 1521. In this embodiment, the second crossbar 1502 is connected to the rear ends of the two second tubes 1521, and the second crossbar 1502 extends along the left and right directions. The front end of each second tube 1521 is pivotally connected to the second pivot point O2 of the rear end of the first tube 1511 on the same side, and each second tube 1521 is also pivotally connected to the third pivot point O3 of the rod 121 of the rear support rod 12 on the same side. The second crossbar 1502 is located behind the first crossbar 101, and the second crossbar 1502 and the first crossbar 101 are spaced a predetermined distance apart in the second direction F2. The second direction F2 is equivalent to the front-back direction, and the second direction F2 is substantially perpendicular to the first direction F1.

[0355] The linkage 153 includes two tubes 1531 located on the left and right sides. The upper end of each tube 1531 is pivotally connected to the fourth pivot point O4 of the rod 131 on the same side, and the lower end of each tube 1531 is pivotally connected to the fifth pivot point O5 of the second tube 1521 on the same side. In this embodiment, each tube 1531 has an S-shaped structure to avoid interference with other components when the frame 100 is folded. Of course, in some alternative embodiments, the structure of each tube 1531 is not limited to the S-shaped, and each tube 1531 can be designed into any suitable structure as needed.

[0356] Depend on Fig.50 It can be seen that when the frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary supporting member 152 are unfolded and arranged substantially horizontally, the second pivot point O2 is located between the first pivot point O1 and the third pivot point O3, the third pivot point O3 is located between the second pivot point O2 and the second crossbar 1502, and the fifth pivot point O5 is located between the second pivot point O2 and the third pivot point O3. Fig.52 and Fig.53 100 is a three-dimensional diagram of the folding process of the frame 100 shown in FIG. 100. When the frame 100 is in the folded state, the first connecting member 151 and the auxiliary supporting member 152 are folded. More specifically, during the folding process of the frame 100, the angle α between the first connecting member 151 and the auxiliary supporting member 152 changes from approximately 180 degrees to less than 90 degrees (e.g., Fig.53 As shown, when the frame 100 is fully folded, the angle α is less than 90 degrees).

[0357] See also Fig.52 When the frame 100 of the present embodiment needs to be folded, the armrest 14 is rotated about the pivot portion 117 to be folded relative to the upper support rod 13. The upper support rod 13 is rotated about the pivot portion 118 to be close to the rear support rod 120. The linkage 153 drives the auxiliary support member 152 to rotate about the third pivot point O3 as the upper support rod 13 moves, so that the first connecting member 151 rotates about the second pivot point O2 relative to the auxiliary support member 152 and approaches the auxiliary support member 152. The first connecting member 151 pulls the front support rod 11 to be close to the rear support rod 12 while rotating until the frame 100 is folded to Fig.53 Shown in the folded state.

[0358] Figure 54 to Figure 59The cross-sectional view and the stereoscopic view of the partial structure of the card base assembly 200 of this embodiment are shown. The card base assembly 200 is, for example, a bilaterally symmetrical structure. The card base assembly 200 includes a seat plate assembly 2 and a locking mechanism 21 installed on the seat plate assembly 2. The seat plate assembly 2 includes, for example, an upper shell 201 and a lower shell 202. The upper shell 201 and the lower shell 202 are, for example, buckled together and can be fixed together by fasteners (such as screws or bolts) not shown. A space for accommodating the locking mechanism 21 is enclosed between the upper shell 201 and the lower shell 202.

[0359] See also Fig.50 and Fig.51 The seat plate assembly 2 of the card seat assembly 200 is installed on the connecting assembly 15 of the frame 100 and extends along the left-right direction (first direction F1). The seat plate assembly 2 of the card seat assembly 200 is located between the first cross bar 101 and the second cross bar 1502, that is, the seat plate assembly 2 of the card seat assembly 200 and the first cross bar 101 and the second cross bar 1502 are separated by a predetermined distance in the front-to-back direction (second direction F2). Fig.50 and Fig.54 In some embodiments, sleeves 2010 are provided at the left and right ends of the upper shell 201, for example, and each sleeve 2010 can be sleeved on the outside of the adjacent first tube 1511. The pivots of the first tube 1511 and the second tube 1521 at the second pivot point O2 pass through the sleeves 2010, so that the card seat assembly 200 cannot slide forward and backward along the first connecting member 151. When the frame 100 is folded, the card seat assembly 200 can move to the folded position together with the first connecting member 151. In some alternative embodiments, sleeves for sleeved with the two first tubes 1511 can also be provided at the left and right ends of the lower shell 202, or the upper shell 201 and the lower shell 202 are connected to form the sleeve.

[0360] See also Fig.51 The card base assembly 200 is formed with two engaging channels 22 (e.g., recessed portions formed on the upper housing 201) extending in the front-to-back direction (the second direction F2). The two engaging channels 22 are spaced apart from each other and arranged in a row in the left-right direction (the first direction F1). The two engaging channels 22 are used to engage with the engaging member 311 (see FIG. 2 ) of the carrier 300. Fig.58 The type of the carrier 300 is not limited herein. Fig.49The carrier 300 shown can be a storage rack, a stretcher, or the bottom structure of a container (such as a baby carrier or a pet box) whose complete structure is not shown. The bottom of the carrier 300 includes a snap-fitting member 311, which can be formed on two opposite rods of the annular structure, or the snap-fitting member 311 can be formed by two or more rods independent of each other. Of course, the implementation of the snap-fitting member 311 is not limited to this. The snap-fitting member 311 is used to snap-fit ​​with the snap-fitting channel 22, and can be locked in the snap-fitting channel 22 by the locking mechanism 21. The cooperation between the snap-fitting member 311 and the snap-fitting channel 22 can limit the movement of the carrier 300 in the left and right directions relative to the base assembly 200.

[0361] The wheeled mobile device 1000 provided in the embodiment of the utility model has a frame 100 that can be connected to a variety of different types of carriers 300 through a socket assembly 200, thereby expanding the versatility of the frame 100, so that the wheeled mobile device 1000 can provide multiple functions to meet the user's usage needs.

[0362] See also Fig.60 In the cross-sectional view shown in FIG. 1 , a positioning mechanism 400 is provided between the card base assembly 200 and the carrier 300, and the positioning mechanism 400 is used to limit the movement of the carrier 300 in the front-rear direction (second direction F2) relative to the card base assembly 200. The positioning mechanism 400, for example, includes a third positioning protrusion 431 (see FIG. 1 ) formed on the upper shell 201 of the seat plate assembly 2 of the card base assembly 200. Fig.51 and Fig.54 ), the third positioning protrusion 431 extends along the left-right direction (first direction F1). The third positioning protrusion 431 is used to engage with the groove 430 at the bottom of the carrier 300 (for example, in a concave-convex matching manner). Of course, the implementation of the positioning mechanism 400 is not limited to the above example, as long as it can limit the movement of the carrier 300 relative to the card holder assembly 200 in the front and rear directions. For example, in some alternative embodiments, a recess extending along the left-right direction can be provided on the upper shell 201 of the card holder assembly 200, and a positioning protrusion extending along the left-right direction can be provided on the carrier 300, and the recess is engaged with the positioning protrusion. In addition, in some alternative embodiments, the positioning mechanism 400 can be provided between the carrier 300 and the frame 100. Alternatively, in some alternative embodiments, a positioning mechanism 400 is provided between the carrier 300 and the frame 100, and between the carrier 300 and the card holder assembly 200.

[0363] Continue to see Fig.60 The first cross bar 101, the card base assembly 200 and the second cross bar 1502 cooperate to support the carrier 300. The first cross bar 101 is conducive to preventing the carrier 300 from tipping forward relative to the card base assembly 200, and the second cross bar 1502 is conducive to preventing the carrier 300 from tipping backward relative to the card base assembly 200, thereby providing more reliable support for the carrier 300.

[0364] Of course, in some alternative embodiments, one of the first crossbar 101 and the second crossbar 1502 cooperates with the card holder assembly 200 to support the carrier 300, and the other does not support the carrier 300. The first crossbar 101 or the second crossbar 1502 used to support the carrier 300 can also be detachably engaged with the carrier 300 through a snap-fit ​​structure to prevent the carrier 300 from being easily separated from the first crossbar 101 or the second crossbar 1502. In some embodiments, the snap-fit ​​structure, for example, includes a hook extending downward from the carrier 300, and the hook is suitable for snapping with the first crossbar 101 or the second crossbar 1502, and the first crossbar 101 or the second crossbar 1502 is restricted between the hook body of the hook and the carrier 300. In some embodiments, the snap-fit ​​structure can also limit the forward and backward movement of the carrier 300 relative to the card holder assembly 200, and the positioning mechanism 400 can include the snap-fit ​​structure. It should be noted that in the embodiment where both the first cross bar 101 and the second cross bar 1502 are used to support the carrier 300 , both the first cross bar 101 and the second cross bar 1502 can be detachably engaged with the carrier 300 via a snap-fit ​​structure (such as the above-mentioned hook).

[0365] In some embodiments not shown, when the first crossbar 101 is used to support the carrier 300, a first groove and a first positioning protrusion extending in the left-right direction may be respectively provided on the carrier 300 and the first crossbar 101, and the engagement between the first groove and the first positioning protrusion (for example, engagement in a concave-convex matching manner) may limit the movement of the carrier 300 relative to the card holder assembly 200 in the second direction F2. When the second crossbar 1502 is used to support the carrier 300, a second groove and a second positioning protrusion extending in the left-right direction may be respectively provided on the carrier 300 and the second crossbar 1502, and the engagement between the second groove and the second positioning protrusion (for example, engagement in a concave-convex matching manner) may limit the movement of the carrier 300 relative to the card holder assembly 200 in the second direction F2. The positioning mechanism 400 includes the above-mentioned first groove and first positioning protrusion, and the second groove and second positioning protrusion.

[0366] See also Fig.51 and Fig.60 The first crossbar 101 may also be provided with a first abutting member 103 for abutting against the carrier 300. The first abutting member 103 may be, for example, but not limited to, a plastic sheet installed on the first crossbar 101. The first abutting member 103 may, for example, have an anti-slip effect. The second crossbar 1502 may be provided with a second abutting member 1503 for abutting against the carrier 300. The second abutting member 1503 may be, for example, but not limited to, a rubber sleeve mounted on the second crossbar 1502. The second abutting member 1503 may, for example, have an anti-slip effect.

[0367] In some embodiments not shown, the position of the second cross bar 1502 in the front-to-back direction is adjustable to support vehicles 300 of different sizes. More specifically, the two ends of the second cross bar 1502 are connected to the two second pipes 1521 (see Fig.50 ) are respectively connected by a telescopic structure to allow the position of the second cross bar 1502 to be adjusted in the front-to-back direction.

[0368] See also Fig.51 as well as Figure 54 to Figure 59 , shows an exemplary embodiment of the locking mechanism 21. The locking mechanism 21 includes two locking members 211, which are installed in the seat plate assembly 2 and can slide in the left and right direction (first direction F1). The two locking members 211 correspond to the two engaging channels 22 one by one, and each locking member 211 has a locking position and a release position. Take any one of the locking members 211 as an example, see Fig.54 When the locking member 211 is in the locking position, the locking portion 2111 (such as the locking tongue) of the locking member 211 extends into the corresponding engaging channel 22 to lock the corresponding engaging member 311, so that the engaging member 311 cannot be removed from the engaging channel 22. Fig.58 When the locking member 211 is in the unlocking position, the locking portion 2111 of the locking member 211 retracts relative to the corresponding engaging channel 22 to unlock the corresponding engaging member 311 , allowing the engaging member 311 to be removed from the engaging channel 22 , thereby allowing the carrier 300 to leave the frame 100 .

[0369] See also Fig.54 and Fig.58 It can be seen that in this embodiment, the two locking members 211 move in opposite directions in the left-right direction to release or lock the engaging member 311. This embodiment shows an exemplary structure for releasing the two locking members 211.

[0370] See also Fig.49 and Fig.50 The two wheel seats (more specifically, the front wheel seats 193) on the left and right sides of the frame 100 are respectively installed with unlocking operating members 212, and the two locking members 211 are unlocked by the unlocking operating members 212. Fig.61 In the partial cross-sectional view shown, each release operating member 212 is slidably engaged with the slideway 1930 of the front wheel seat 193. Fig.50 , Fig.55 , Fig.56 and Fig.61, two unlocking operating members 212 are connected to two locking members 211 in the card base assembly 200 through two traction ropes 214. Each traction rope 214 extends inside the tube body of the front wheel seat 193 of the frame 100, the front support rod 11, and the first connecting member 151, and then enters the card base assembly 200. To facilitate the layout of the traction ropes 214, the unlocking operating member 212 of the front wheel seat 193 on the left side of the frame 100 is connected to the locking member 211 on the right side of the card base assembly 200, and the unlocking operating member 212 of the front wheel seat 193 on the right side of the frame 100 is connected to the locking member 211 on the left side of the card base assembly 200. In this way, when any unlocking operating member 212 is pressed, the traction rope 214 will pull the corresponding locking member 211 to move, so that the locking member 211 releases the corresponding engaging member 311. In some embodiments, a reset member 195 (see FIG. 2 ) for driving the unlocking operating member 212 to reset can also be installed in the front wheel seat 193. Fig.61 ), the reset member is, for example, a spring.

[0371] See also Fig.49 The unlocking operation member 212 may have an unlocking identification area 2121, which is used to assist the user in determining whether the locking member 211 is in the unlocking position. The unlocking identification area 2121 is, for example, a color block (e.g., green) located on the unlocking operation member 212. More specifically, when the unlocking operation member 212 is not pressed, the locking member 211 is in the locking position, and the unlocking identification area 2121 is located outside the front wheel seat 193 and is visible. When the unlocking operation member 212 is pressed, the locking member 211 is in the unlocking position, and the unlocking identification area 2121 slides into the interior of the front wheel seat 193 and is invisible. The user can easily determine whether the locking member 211 is in the locking position or the unlocking position by observing whether the unlocking identification area 2121 is visible.

[0372] See also Fig.55 Each traction rope 214 is, for example, a steel wire rope. Taking any traction rope 214 as an example, the first end of the traction rope 214 is connected to the corresponding unlocking operating member 212, and the other end is connected to the corresponding locking member 211. At least one guide mechanism 16 for guiding the traction rope 214 may be provided inside the vehicle frame 100. Fig.61 The guide mechanism 16 includes, for example, a rotating member 161 disposed near the unlocking operating member 212 and other guide structures disposed in the frame tube body. The other guide structures include, for example, a guide frame 162 disposed inside the frame tube body 100 (such as inside the front support rod 11) (see Fig.61 ) and the guide frame 163 (see Fig.55). The rotating member 161 is more specifically disposed in the front wheel seat 193. After passing through the rotating member 161, the traction rope 214 passes through the hole 1933 of the front wheel seat 193 and enters the front support rod 11. The rotating member 161 can prevent the traction rope 214 from having unnecessary friction with other structures. The rotating member 161 can be formed, for example, by a rotatable rivet or a pin. Fig.55 and Fig.61 The guide frames 162 and 163 are, for example, disposed at a bend of the traction rope 214 . In some embodiments, the traction rope 214 is wrapped in a sheath 2140 , and the guide frames 162 and 163 can be used to fix the sheath 2140 of the traction rope 214 .

[0373] See also Figure 54 to Figure 56 The card seat assembly 200 may further include an elastic device 24, which is used to drive each locking member 211 to return to the locked position. In some embodiments, the elastic device 24 may include a spring disposed between two locking members 211, or the elastic device 24 may include a spring disposed between each locking member 211 and the seat plate assembly 2 (e.g., the upper shell 201 or the lower shell 202). When each locking member 211 moves to the unlocking position, the spring of the elastic device 24 is compressed. Fig.54 The locking portion 2111 of each locking member 211 may have an inclined surface 2112. After the inclined surface 2112 is compressed, the locking portion 2111 may move from the locking position to the unlocking position, which allows the engaging member 311 to enter the engaging channel 22 without operating the unlocking operating member 212.

[0374] Fig.62 and Fig.63 The figure shows a side view of two locking members 211 and a linkage assembly 25 of the card holder assembly 200. In this embodiment, the two locking members 211 are connected by the linkage assembly 25 located therebetween, so that the two locking members 211 can be synchronously moved to the unlocking position or the locking position. In this way, only one of the unlocking operating members 212 can be operated to simultaneously unlock the two locking members 211.

[0375] See also Fig.62 and Fig.63, the linkage assembly 25 can be a four-bar linkage mechanism. Specifically, the four-bar linkage mechanism includes a first link 251, a second link 252, a third link 253 and a fourth link 254. The first link 251 and the second link 252 are pivoted by a pivot A1, the third link 253 and the fourth link 254 are pivoted by a pivot A2, the first link 251 and the third link 253 are pivoted by a pivot A3, and the second link 252 and the fourth link 254 are pivoted by a pivot A4. The four-bar linkage mechanism is a parallel four-bar linkage mechanism, in which the first link 251 and the fourth link 254 are parallel, and the second link 252 and the third link 253 are parallel. One of the diagonally arranged pivots A1 and A2 is a fixed pivot fixedly connected to the seat plate assembly 2 (e.g., the upper shell 201 or the lower shell 202), and the other is a movable pivot. The two connecting rods pivotally connected to the movable pivot are pivotally connected to the two locking members 211 via the pivot A5 and the pivot A6 respectively.

[0376] In this embodiment, pivot A1 is a fixed pivot, pivot A2 is a movable pivot, pivot A3 is located between pivot A2 and pivot A5, and pivot A4 is located between pivot A2 and pivot A6. Fig.63 When any locking member 211 is driven by the corresponding unlocking operating member 212 to move to the unlocking position, the linkage assembly 25 will be deformed, and drive the other locking member 211 to move to the unlocking position synchronously. Similarly, when any locking member 211 is driven by the elastic device 24 to move to the locking position, the linkage assembly 25 will drive the other locking member 211 to move to the locking position synchronously. Of course, the structure of the linkage assembly 25 is not limited to the above-mentioned four-bar connection structure, as long as it can make the locking members 211 connected by the linkage assembly 25 move synchronously.

[0377] It can be understood that by providing the linkage assembly 25, for example, by operating any unlocking operating member 212 in a pressing manner, the two locking members 211 can be unlocked at the same time. In some embodiments, by providing the linkage assembly 25, the number of unlocking operating members 212 can be less than the number of locking members 211, for example, only one unlocking operating member 212 can be provided to simultaneously unlock the two locking members 211. In addition, by providing the linkage assembly 25, the elastic device 24 can only include a spring provided between one locking member 211 and the seat plate assembly 2 (for example, the upper shell 201 or the lower shell 202) to synchronously drive the two locking members 211 to return to the locked position.

[0378] See also Figure 54 to Figure 59, the card holder assembly 200 may also include a retaining mechanism 23 corresponding to the two locking members 211. When each locking member 211 is driven to the unlocking position by the unlocking operating member 212, each retaining mechanism 23 can lock the corresponding locking member 211 in the unlocking position. In this way, after the user presses the unlocking operating member 212 once, the locking member 211 is locked in the unlocking position by the retaining mechanism 23. Even if the user releases the pressure on the unlocking operating member 212, the locking member 211 remains in the unlocking position. After that, the user only needs to lift the carrier 300 upward to easily remove the carrier 300 from the frame 100. In combination with the above, it can be understood that in some alternative embodiments, the retaining mechanism 23 can be configured for only one of the two locking members 211. Under the action of the linkage assembly 25, the retaining mechanism 23 can simultaneously lock the two locking members 211 in the unlocking position.

[0379] See also Figure 54 to Figure 59 The retaining mechanism 23 in this embodiment, for example, includes a movable member 231 , a first buckle portion 2301 , a second buckle portion 232 and a reset device (also referred to as a reset member) 236 .

[0380] See also Fig.54 The movable member 231 can be installed in the slideway 220 communicating with the engaging channel 22, and the slideway 220 is located below the engaging channel 22. The movable member 231 has an abutting end 2311 suitable for extending into the engaging channel 22 and a engaging end 2312 away from the abutting end 2311. The abutting end 2311 is suitable for abutting with the engaging member 311, and the engaging member 311 located in the engaging channel 22 pushes the abutting end 2311 from the engaging channel 22 to the slideway 220. The first buckle portion 2301 is installed at the buckle end 2312. The first buckle portion 2301 is, for example, a card slot.

[0381] See also Fig.55 , the second buckle portion 232 is disposed on the locking member 211. Fig.57 In this embodiment, an elastic arm 213 is mounted on the locking member 211, and the elastic arm 213 extends along the left-right direction to the vicinity of the abutting end 2311 of the movable member 231, and the second buckle portion 232 is mounted on the elastic arm 213. The second buckle portion 232 includes, for example, a wedge-shaped step formed on the elastic arm 213.

[0382] See also Fig.57 and Fig.58In some embodiments, the elastic arm 213 is fixed to the locking member 211 by, for example, a fastener 2131, such as a screw. A rotation-stopping structure 26 may be provided between the elastic arm 213 and the locking member 211 to prevent the two from rotating relative to each other. There are many embodiments of the rotation-stopping structure 26, and an exemplary embodiment of the rotation-stopping structure 26 is shown in this embodiment. More specifically, the rotation-stopping structure 26 includes a rotation-stopping block 261 and a rotation-stopping groove 262, one of which is provided on the wall of the elastic arm 213 and deviates from the fastener 2131, and the other is provided on the locking member 211. The rotation-stopping block 261 and the rotation-stopping groove 262 are engaged with each other to limit the elastic arm 213 from rotating around the fastener 2131 relative to the locking member 211. In some alternative embodiments, the elastic arm 213 may be integrally formed with the locking member 211.

[0383] The reset device 236 is used to drive the abutting end 2311 of the movable member 231 to move into the engaging channel 22. In some embodiments, the reset device 236 includes, for example, a spring disposed between the movable member 231 and the lower housing 202 of the seat plate assembly 2. In some embodiments, the movable member 231 includes, for example, a chamber 2310 (see FIG. 20 ) for accommodating the reset device 236. Fig.58 ).

[0384] Combine the following Fig.54 , Fig.58 and Fig.59 The following is to illustrate the working process of the retaining mechanism 23 matched with the locking member 211 when the position of any locking member 211 changes.

[0385] See also Fig.54 When the carrier 300 is fixed on the frame 100 , the engaging member 311 is locked in the engaging channel 22 by the locking member 211 , and the movable member 231 is pressed by the engaging member 311 and moves downward along the slide 220 , so that the first engaging portion 2301 moves to the moving path of the second engaging portion 232 .

[0386] See also Fig.58When the carrier 300 needs to be removed from the vehicle frame 100, the unlocking operation member 212 is pressed, and the unlocking operation member 212 drives the locking member 211 to move to the unlocking position. The second buckle portion 232 moves with the locking member 211, and the elastic device 24 is compressed. When the second buckle portion 232 abuts against the clamping end 2312 of the movable member 231, the elastic arm 213 is elastically deformed to allow the locking member 211 to continue to move. After the locking member 211 moves to the unlocking position, the second buckle portion 232 is opposite to the first buckle portion 2301, and the elastic arm 213 elastically rebounds, so that the second buckle portion 232 is engaged with the first buckle portion 2301. At this time, even if the unlocking operation member 212 is released, under the engagement of the second buckle portion 232 and the first buckle portion 2301, the elastic device 24 cannot drive the locking member 211 to the unlocking position, and the locking member 211 is locked in the unlocking position by the retaining mechanism 23. At this time, the user does not need to continue pressing the unlocking operation member 212 , and can directly lift the carrier 300 upward to remove the carrier 300 from the vehicle frame 100 .

[0387] See also Fig.59 When the carrier 300 is removed from the vehicle frame 100, the engaging member 311 leaves the engaging channel 22 and no longer presses the abutting end 2311 of the movable member 231. The movable member 231 is reset under the drive of the reset device 236, and the abutting end 2311 moves upward and extends into the engaging channel 22. At the same time, the first locking portion 2301 moves out of the moving path of the second locking portion 2302 as the movable member 231 moves, and the locking member 211 is reset to the locking position under the action of the elastic device 24.

[0388] In some alternative embodiments, the retaining mechanism 23 may also have a variety of implementations, not limited to the above examples. For example, in some alternative embodiments, the first buckle portion 2301 may be a wedge-shaped step disposed on the clamping end 2312 of the movable member 231, and the second buckle portion 232 may be a clamping groove disposed on the elastic arm 213.

[0389] In some embodiments not shown, the wheeled mobile device 1000 provided in the above embodiment of the present invention may also be modified as follows.

[0390] 1. In some alternative embodiments, the vehicle frame 100 has a non-foldable structure, and the connection assembly 15 for installing the card seat assembly 200 has different implementations accordingly. For example, the connection assembly 15 includes two non-foldable pipes located on the left and right sides, and the two pipes extend along the front-back direction respectively and are connected to the rod 111 and the rod 121 on the same side, and each pipe of the connection assembly 15 forms a stable triangle with the rod 111 and the rod 121 on the same side. The left and right ends of the card seat assembly 200 can be mounted on the two pipes of the connection assembly 15 and fixed by fasteners, or the left and right ends of the card seat assembly 200 are directly fixed to the two pipes of the connection assembly 15 by fasteners (bolts or screws). The card seat assembly 200 is located between the first cross bar 101 and the rear cross bar 122.

[0391] Second, in some alternative embodiments, the auxiliary support rod 152 may not have the second cross bar 1502 connected between the two second pipes 1521 on the left and right sides. By properly setting the height of the rear cross bar 122 of the rear support rod 12, the rear cross bar 122 can be used as a second cross bar for supporting the carrier 300 in cooperation with the card seat assembly 200.

[0392] 3. In some alternative embodiments, the second cross bar 1502 of the auxiliary support bar 152 for supporting the carrier 300 may not be disposed at the rear ends of the two second tubes 1521. For example, the connection position between the second cross bar 1502 and each second tube 1521 may be located between the second pivot point O2 and the third pivot point O3, and the second cross bar 1502 and the card holder assembly 200 are spaced apart by a predetermined distance in the front-to-back direction (the second direction F2).

[0393] 4. In some alternative embodiments, the two ends of the card base assembly 200 may not be installed on the two first pipes 1511 of the first connecting member 151. For example, the two ends of the card base assembly 200 are connected to the two second pipes 1521 of the auxiliary support rod 152 respectively.

[0394] 5. In some alternative embodiments, the number of the engaging channels 22 on the card holder assembly 200 is not limited to two, and can be one or more (including two). For example, the multiple engaging channels 22 can be arranged in a row along the left-right direction, or in a column in the front-back direction, or in multiple rows and columns in the left-right direction and the front-back direction.

[0395] 6. In some alternative embodiments, the multiple locking members 211 that cooperate with the multiple engaging channels 22 in the same row move in the same direction when releasing or locking the engaging member 311. For example, the multiple locking members 211 that cooperate with the multiple engaging channels in the same row are arranged in a row, and the locking members 211 in the same row can be connected to the same sliding member located in the seat plate assembly 2. In this way, there is no need to set up a linkage assembly 25, and the multiple locking members 211 can be moved to the unlocking position at the same time by driving the sliding member with the same unlocking operating member 212.

[0396] 7. The location of the unlocking operating member 212 is not limited to the front wheel seat 193. In some alternative embodiments, the unlocking operating member 212 may be located on the rear wheel seat 194 or other suitable locations, and the unlocking operating member 212 controls the locking member 211 to unlock through the traction rope 214. In addition, in some alternative embodiments, the unlocking operating member 212 may be attached to the locking member 211 or integrally formed.

[0397] 8. Although in this embodiment, the wheeled mobile device 100 includes a frame 100, a base assembly 200 and a carrier 300, it can be seen from the above that the carrier 300 can be removed from the base assembly 200, and the wheeled mobile device 100 without the carrier 300 is also within the protection scope of this application.

[0398] See also Figure 64 to Figure 66 , shows the structure of a storage rack 140 installed on the armrest 14 of the frame 100 in some variant embodiments of the wheeled mobile device. The storage rack 140, for example, has a receiving cavity 1401 for receiving a cup or other items. Depending on the different items to be received, the receiving cavity 1401 can have different cross-sectional shapes. For example, some receiving cavities 1401 have a rectangular cross-section to facilitate receiving a mobile phone, and some receiving cavities 1401 have a circular cross-section to facilitate receiving a water cup.

[0399] In some embodiments, the mouth of the accommodating cavity 1401 may be provided with at least one clamping portion 1402 extending inward, and the clamping portion 1402 is made of, for example, an elastic material. When an object is placed in the accommodating cavity 1401, the clamping portion 1402 may abut against the object to prevent the object from shaking back and forth in the accommodating cavity 1401, and can prevent the object from easily falling out of the accommodating cavity 1401. The utility model does not impose any specific restrictions on the shape of the clamping portion 1402, as long as it can abut against the object to clamp the object at the mouth of the accommodating cavity 1401. For example, in some embodiments, a plurality of clamping portions 1402 may be evenly arranged around the mouth of the accommodating cavity 1401, and each clamping portion 1402 may have, for example, an arc shape. In some embodiments, a long strip-shaped clamping portion 1402 may be provided at a local position of the mouth of the accommodating cavity 1401.

[0400] See also Fig.66In some embodiments, the clamping portion 1402 is, for example, formed on an annular member 1403, which can be made of any suitable material. The annular member 1403 can be fixed in a fixing ring 1404 by overmolding, and the fixing ring 1404 can be fixed on the annular step 14011 of the mouth of the accommodating cavity 1401 by any suitable means. In some embodiments, the annular member 1403 can be, but is not limited to, made of a thermoplastic elastomer (TPE) material. The fixing ring 1404 can be, but is not limited to, made of a polypropylene (PP) material, and the hardness of the fixing ring 1404 is greater than that of the annular member 1403. The fixing ring 1404 can be, for example, fixed on the step 14011 by pressing or by vibration welding. Of course, the clamping portion 1402 can also be fixed to the mouth of the accommodating cavity 1401 by any other suitable means to clamp the object, and is not limited to being fixed by the fixing ring 1404.

[0401] Fourth embodiment

[0402] Fig.67 A three-dimensional diagram of a wheeled mobile device 1000 provided according to a fourth embodiment of the present invention is shown. The wheeled mobile device 1000 may include a frame 100, a card seat assembly 200 and a carrier 300. The wheeled mobile device 1000 includes a support assembly provided according to some embodiments of the present invention. The support assembly will be described together with the wheeled mobile device 1000 below. Fig.67 In the illustrated embodiment, the wheeled mobile device 1000 is exemplarily described as a cart, and according to the type of the carrier 300, the cart may be a child stroller, a pet stroller, a shopping cart, etc. Of course, in some alternative embodiments, the wheeled mobile device 1000 may also be other types of products.

[0403] See also Fig.68 The structure of the frame 100 shown in the figure is, in some embodiments, substantially bilaterally symmetrical. The frame 100 may include, for example, a front support rod 11, a rear support rod 12, an upper support rod 13, a handrail 14, and a connecting assembly 15. The frame 100 can be folded and have an unfolded state (see FIG. Fig.68 and Fig.70 ) and folded state (see Fig.72 and Fig.73 ).

[0404] See also Fig.68, the front support bar 11 is, for example, in a U-shaped structure, including a first cross bar 101 and two rods 111. At least one front wheel seat 193 is installed at the bottom of the front support bar 11, and the front wheel seat 193 is used to install the front wheel 191. In the absence of conflict, the structures of the front support bar 11, the front wheel seat 193 and the front wheel 191 can refer to the description in the third embodiment above. In some embodiments, the two front wheel seats 193 are installed at the left and right ends of the first cross bar 101, and the two rods 111 are respectively connected to the front wheel seats 193 on the same side.

[0405] The rear support bar 12 is, for example, a U-shaped structure, including a rear cross bar 122 and two rods 121. The upper ends of the rods 121 are, for example, respectively pivotally connected to the upper ends of the rods 111 of the front support bar 11 on the same side through the pivoting portion 118. The rear support bar 12 is equipped with two rear wheel seats 194, each rear wheel seat 194 is used to install a rear wheel 192. In the absence of conflict, the structures of the rear support bar 12, the rear wheel seats 194 and the rear wheels 192 can refer to the description in the third embodiment above.

[0406] The upper support rod 13 includes two rods 131, the lower end of each rod 131 is respectively pivoted to the pivot portion 118 on the same side, and the upper end of each rod 131 is respectively connected to the armrest 14. In some embodiments, the armrest 14 is, for example, a U-shaped structure, including two rods 141, and the lower end of each rod 141 is, for example, pivoted to the rod 131 of the upper support rod 13 on the same side through the pivot portion 117. A storage rack 140 for storing small items can be installed on the armrest 14. In the absence of conflict, the structures of the upper support rod 13, the armrest 14 and the storage rack 140 can refer to the description in the third embodiment above.

[0407] The connecting assembly 15 is respectively connected to the front support rod 11, the rear support rod 12 and the upper support rod 13. When the frame 100 is folded, under the action of the connecting assembly 15, the front support rod 11, the rear support rod 12 and the upper support rod 13 can be folded synchronously. Fig.68 and Fig.69 An exemplary embodiment of the connection assembly 15 is shown. The connection assembly 15 includes, for example, a first coupling member (also referred to as a first support frame) 151, an auxiliary support member (also referred to as a second support frame) 152, and a linkage member 153.

[0408] The first connecting member 151 includes two first tubes 1511 located on the left and right sides, and the two first tubes 1511 are parallel to each other. The front end of each first tube 1511 is pivotally connected to the first pivot point O1 of the rod 111 of the front support rod 11 on the same side.

[0409] The auxiliary support member 152 includes two second tubes 1521 located on the left and right sides, and the two second tubes 1521 are parallel to each other. The front end of each second tube 1521 is pivotally connected to the second pivot point O2 of the rear end of the first tube 1511 on the same side, and a rotation axis XX is formed at the second pivot point O2 (see Fig.69 ). More specifically, the second tube 1521 and the first tube 1511 on the same side are pivotally connected, for example, by the pivot 150, and the rotation axis XX is the center line of the pivot 150, and the rotation axis XX is parallel to the first direction F1. Each second tube 1521 is also pivotally connected to the third pivot point O3 of the rod 121 of the rear support rod 12 on the same side. In some embodiments, the auxiliary support member 152 may also include an intermediate tube connected between the two first tubes 1511, and the auxiliary support member 152 is generally U-shaped.

[0410] The linkage 153 includes two tubes 1531 located on the left and right sides. The upper end of each tube 1531 is pivotally connected to the fourth pivot point O4 of the rod 131 on the same side, and the lower end of each tube 1531 is pivotally connected to the fifth pivot point O5 of the second tube 1521 on the same side. Each tube 1531 can be designed into any suitable structure and any suitable shape as needed to avoid interference with other components when the frame 100 is folded. For example, in some embodiments, the structure of each tube 1531 can be bent or S-shaped.

[0411] Depend on Fig.68 and Fig.70 It can be seen that when the frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary supporting member 152 are unfolded and arranged substantially horizontally, and the angle α between each first tube 1511 and the second tube 1521 adjacent to the same side is approximately 180 degrees. In some embodiments, when the frame 100 is in the unfolded state, the angle α formed between the first connecting member 151 and the auxiliary supporting member 152 can be an obtuse angle greater than 90 degrees. Fig.68 When the frame 100 is in the unfolded state, the second pivot point O2 is located between the first pivot point O1 and the third pivot point O3, and the fifth pivot point O5 is located between the second pivot point O2 and the third pivot point O3. Fig.72 and Fig.73 When the vehicle frame 100 is in the folded state, the first connecting member 151 and the auxiliary supporting member 152 are also in the folded state, and the angle α between each first tube 1511 and the adjacent second tube 1521 on the same side is an acute angle.

[0412] See also Figure 70 to Figure 73The folding process of the frame 100 shown in the figure is a three-dimensional diagram. When the frame 100 of this embodiment needs to be folded, the armrest 14 is rotated about the pivot portion 117 and folded relative to the upper support rod 13. The upper support rod 13 is rotated about the pivot portion 118 and approaches the rear support rod 12. The linkage 153 drives the auxiliary support member 152 to rotate about the third pivot point O3 while the upper support rod 13 moves, so that the first connecting member 151 rotates about the second pivot point O2 relative to the auxiliary support member 152 and approaches the auxiliary support member 152. The angle α between each first tube 1511 of the first connecting member 151 and the adjacent second tube 1521 of the auxiliary support member 152 is changed from approximately 180 degrees to an acute angle less than 90 degrees (such as Fig.72 As shown in FIG. 1 , when the frame 100 is fully folded, the angle α is less than 90 degrees. The first connecting member 151 pulls the front support rod 11 toward the rear support rod 12 while rotating until the frame 100 is folded to Fig.72 and Fig.73 Shown in the folded state.

[0413] Fig.68 and Fig.69 An exemplary implementation of the card base assembly 200 of the present embodiment is shown. The card base assembly 200 includes a seat plate assembly for placing an object (more specifically, a carrier) thereon, and the seat plate assembly includes a first seat plate assembly 2A and a second seat plate assembly 2B. The first seat plate assembly 2A is mounted to the first connecting member 151 and is provided with a locking mechanism (such as the first locking mechanism 21A). The second seat plate assembly 2B is mounted to the auxiliary support member 152 and is provided with a locking mechanism (such as the second locking mechanism 21B). As previously described, the first connecting member 151 and the auxiliary support member 152 are pivotally connected by a pivot 150, and the pivot 150 has a rotation axis XX, whereby the first seat plate assembly 2A and the second seat plate assembly 2B can rotate relative to each other about the rotation axis XX, so that the card base assembly 200 has an unfolded state and a folded state.

[0414] See also Fig.68 When the vehicle frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary supporting member 152 are in the unfolded state, and the card seat assembly 200 is in the unfolded state accordingly. Fig.67 , Fig.69 and Fig.70 When the card base assembly 200 is in the unfolded state, the card base assembly 200 can support the carrier 300 and lock the carrier 300 through the first locking mechanism 21A and the second locking mechanism 21B. Figure 71 to Figure 73, the frame 100 can be folded after the carrier 300 is removed from the frame 100. When the frame 100 is in the folded state, the first connecting member 151 and the auxiliary supporting member 152 are in the folded state, and the card seat assembly 200 is in the folded state accordingly. When the frame 100 and the card seat assembly 200 are converted from the expanded state to the folded state, the first seat plate assembly 2A and the second seat plate assembly 2B are close to each other in the front-to-back direction. When the frame 100 and the card seat assembly 200 are converted from the folded state to the expanded state, the first seat plate assembly 2A and the second seat plate assembly 2B are away from each other in the front-to-back direction.

[0415] The card holder assembly 200 of the embodiment of the utility model can reduce the internal space of the folded frame 100 by folding itself. Fig.73 In some embodiments, the card base assembly 200 may be provided with a handle 29, which may be provided on the first seat plate assembly 2A and / or the second seat plate assembly 2B, for example, so that the user can conveniently move the folded frame 100 by means of the handle 29. More specifically, when the frame 100 is folded, the handle 29 is, for example, located in the inner space of the frame vacated by the folded card base assembly 200, and does not protrude outward relative to the frame 100, so that the packaging volume can be reduced and the transportation cost can be reduced.

[0416] The support assembly provided in some embodiments of the present invention may include the above-mentioned card seat assembly 200, the first connecting member 151 and the auxiliary supporting member 152. The pivoting of the first seat plate assembly 2A and the second seat plate assembly 2B is achieved by means of the pivoting of the first connecting member 151 and the auxiliary supporting member 152. However, in actual applications, the pivoting method of the first seat plate assembly 2A and the second seat plate assembly 2B is not limited to the above-mentioned example. For example, in some embodiments, the first connecting member 151 and the auxiliary supporting member 152 may not be provided, and the first seat plate assembly 2A and the second seat plate assembly 2B themselves have sufficient structural strength. The two can be directly pivoted through the pivot 150, and can be directly pivoted with the corresponding front support rod 11 or rear support rod 12. It can be understood that in some embodiments where the first seat plate assembly 2A and the second seat plate assembly 2B are directly pivoted through the pivot 150, the support assembly may include the card seat assembly 200 without including the first connecting member 151 and the auxiliary supporting member 152.

[0417] See also Fig.69In some embodiments, the first seat plate assembly 2A is connected between the two first pipes 1511 and extends along the left-right direction (first direction F1). The second seat plate assembly 2B is connected between the two second pipes 1521 and extends along the left-right direction (first direction F1). When the card seat assembly 200 is in the unfolded state, the first seat plate assembly 2A and the second seat plate assembly 2B are spaced apart in the second direction F2. The second direction F2 is equivalent to the front-back direction, and the second direction F2 is not parallel to the first direction F1. More specifically, the second direction F2 is substantially perpendicular to the first direction F1.

[0418] See also Fig.70 and Fig.71 In some embodiments, the first seat plate assembly 2A is close to the pivot 150, and the second seat plate assembly 2B is far from the pivot 150. Fig.73 When the frame 100 is in the folded state, the seat assembly 200 is also in the folded state, and the positions of the first seat plate assembly 2A and the second seat plate assembly 2B are staggered and do not overlap, which is also conducive to reducing the volume of the folded frame 100. Fig.73 In some embodiments, when the frame 100 is folded, the second seat plate assembly 2B is located above the first seat plate assembly 2A, and the handle 29 is, for example, disposed on the second seat plate assembly 2B.

[0419] See also Fig.69 In some embodiments, sleeves 2010 are provided at both ends of the first seat plate assembly 2A, and each sleeve 2010 can be sleeved on the outside of the adjacent first pipe 1511. The pivot 150 is inserted into the sleeve 2010, so that the first seat plate assembly 2A cannot move forward and backward along the first pipe 1511. In some embodiments, the pivot 150 can be a hollow shaft.

[0420] Continue to see Fig.69 In some embodiments, the first seat plate assembly 2A and the second seat plate assembly 2B each include at least one engaging channel 22, and each engaging channel 22 extends in the front-to-back direction (the second direction F2). The first locking mechanism 21A and the second locking mechanism 21B each include at least one locking member 211, and each locking member 211 moves in the left-right direction (the first direction F1) to have a locking position extending into the corresponding engaging channel 22 and a release position retracted from the corresponding engaging channel 22. The moving direction of each locking member 211 is parallel to the rotation axis XX. It can be understood that when the locking member 211 is in the locking position, the carrier 300 can be locked, and when the locking member 211 is in the release position, the carrier 300 is allowed to be removed from the card seat assembly 200.

[0421] Continue to see Fig.69In this embodiment, the engaging channel 22 on the first seat plate assembly 2A can be referred to as a first engaging channel 22A, and the engaging channel 22 on the second seat plate assembly 2B can be referred to as a second engaging channel 22B. Fig.69 and Fig.74 , the locking member 211 of the first locking mechanism 21A may be referred to as the first locking member 211A. Fig.69 , Fig.77 and Fig.78 , the locking member 211 of the second locking mechanism 21B can be referred to as the second locking member 211B. In this embodiment, the number of the first engaging channel 22A and the first locking member 211A can both be two, and the directions of releasing and locking of the two first locking members 211A are opposite. The number of the second engaging channel 22B and the second locking member 211B can both be two, and the directions of releasing and locking of the two second locking members 211B are opposite. Of course, in some alternative embodiments, the directions of releasing and locking of the two first locking members 211A can be consistent, and the directions of releasing and locking of the two second locking members 211B can be consistent.

[0422] See also Fig.70 and Fig.74 In some embodiments, the first seat plate assembly 2A includes, for example, an upper shell 201 and a lower shell 202, the first engaging channel 22A is formed on the upper shell 201, and the first locking member 211A is located in the accommodating cavity surrounded by the upper shell 201 and the lower shell 202. The sleeve 2010 is, for example, disposed at both ends of the upper shell 201. Fig.77 and Fig.78 In some embodiments, the second seat plate assembly 2B includes, for example, an upper shell 203 and a lower shell 204, the second engaging channel 22B is formed on the upper shell 203, and the second locking member 211B is located in the accommodating cavity surrounded by the upper shell 203 and the lower shell 204. Fig.77 In some embodiments, the handle 29 may include, for example, an upper shell (not shown in the figure) and a lower shell 292. The upper shell of the handle 29 may be attached to the upper shell 203 or formed integrally with the upper shell 203, and the lower shell 292 may be attached to the lower shell 204 or formed integrally with the lower shell 204.

[0423] In the absence of conflict, the description of the carrier 300 can refer to the description of the third embodiment above. For example, the bottom of the carrier 300 can be provided with a clamping member 311, which is used to clamp with each clamping channel 22 (the first clamping channel 22A and the second clamping channel 22B). Figure 67 to Figure 69When the carrier 300 is supported and locked by the card seat assembly 200, the groove at the bottom of the carrier 300 (not shown in the figure, for example, see the groove 430 in the third embodiment) matches the first seat plate assembly 2A and the second seat plate assembly 2B respectively and restricts the movement of the carrier 300 in the front-to-back direction (the second direction F2). The engaging member 311 is respectively engaged in the first engaging channel 22A and the second engaging channel 22B, and is respectively engaged by the first locking member 211A ( Fig.82 ) and the second locking member 211B ( Fig.78 ) is locked, so that the carrier 300 can neither move in the left-right direction (first direction F1) nor be removed from the card holder assembly 200. More specifically, see Fig.78 and Fig.82 When each locking member 211 (the first locking member 211A and the second locking member 211B) is in the locked position, the locking portion 2111 (such as a locking tongue) of each locking member 211 extends into the corresponding engaging channel 22 (the first engaging channel 22A or the second engaging channel 22B) to lock the corresponding engaging member 311, so that the engaging member 311 cannot be removed from the engaging channel 22. When the two first locking members 211A move toward each other and the two second locking members 211B move toward each other and retract from the corresponding engaging channel 22, each engaging member 311 is allowed to be removed from the corresponding engaging channel 22, and the carrier 300 can be removed from the base 200. It can be understood that the detachable connection between the carrier 300 and the base 200 allows the frame 100 to be used in conjunction with different types of carriers 300.

[0424] In some alternative embodiments, the implementation of the carrier 300 is not limited to the above examples. For example, the locking member 311 at the bottom of the carrier 300 can be formed on two parallel and opposite rods of the annular structure, or the locking member 311 can be formed by four or more independent rods.

[0425] See also Fig.74 , Fig.75 and Fig.76 In some embodiments, the two first locking members 211A are connected by a first linkage assembly 25A, and the first linkage assembly 25A controls the two first locking members 211A to move synchronously, so that the two first locking members 211A switch between their locked position and unlocked position synchronously. In this way, any first locking member 211A can be unlocked, that is, the other first locking member 211A can be unlocked at the same time. Of course, when any first locking member 211A moves to the locked position, under the action of the first linkage assembly 25A, the other first locking member 211A moves to the locked position synchronously.

[0426] See also Fig.74 and Fig.76, the first linkage assembly 25A can be a four-bar linkage mechanism. Specifically, the four-bar linkage mechanism includes a first link 251, a second link 252, a third link 253 and a fourth link 254, which are pivoted by pivots A1, A2, A3 and A4. In the absence of conflict, the structure of the first linkage assembly 25A can refer to the description of the linkage assembly 25 in the third embodiment above. One of the diagonally arranged pivots A1 and A2 is a fixed pivot fixedly connected to the seat plate assembly 2A (e.g., the upper shell 201 or the lower shell 202), and the other is a movable pivot. The two links pivoted to the movable pivot are pivoted to two locking members 211 (more specifically, the first locking member 211A) through pivots A5 and A6, respectively.

[0427] In this embodiment, pivot A1 is a fixed pivot, pivot A2 is a movable pivot, pivot A3 is located between pivot A2 and pivot A5, and pivot A4 is located between pivot A2 and pivot A4. Fig.76 When any of the first locking members 211A moves to the unlocking position, the first linkage assembly 25A will be deformed, and drive the other first locking member 211A to move synchronously to the unlocking position. Similarly, when any of the first locking members 211A moves to the locking position, the first linkage assembly 25A will drive the other first locking member 211A to move synchronously to the locking position. Of course, the structure of the first linkage assembly 25A is not limited to the above-mentioned four-bar connection structure, as long as it can make the first locking members 211A connected through the first linkage assembly 25A move synchronously.

[0428] In some embodiments not shown, the two second locking members 211B may be connected via a second linkage assembly (not shown in the figure), and the second linkage assembly controls the two second locking members 211B to move synchronously so that the two second locking members 211B switch synchronously between their locking position and unlocking position. The structure of the second linkage assembly and its connection relationship with the two second locking members 211B can refer to the structure of the first linkage assembly and its connection relationship with the two first locking members 211A. That is, the two second locking members 211B have settings corresponding to the two first locking members 211A, and the structure of the second linkage assembly and its connection relationship with the two second locking members will not be repeated here.

[0429] See also Fig.74 , Fig.75 , Fig.77 and Fig.78In some embodiments, the first locking member 211A of the first locking mechanism 21A and the second locking member 211B of the second locking mechanism 21B can be connected through the corresponding linkage member 27, so that each locking member 211 can be switched between the locking position and the unlocking position synchronously. In this way, any first locking member 211A or any second locking member 211B can be unlocked, that is, the corresponding second locking member 211B or first locking member 211A can be unlocked synchronously. Of course, when any first locking member 211A or second locking member 211B moves to the locking position, the corresponding second locking member 211B or first locking member 211A will also move to the locking position synchronously.

[0430] See also Fig.74 and Fig.77 In some embodiments, the linkage 27 may be a traction rope. The first locking member 211A and the second locking member 211B arranged diagonally are connected by the same linkage 27, so that the unlocking and locking movement directions of the first locking member 211A and the second locking member 211B connected to the same linkage 27 are opposite. More specifically, the first locking member 211A on the left and the second locking member 211B on the right are connected by one linkage 27, and the first locking member 211A on the right and the second locking member 211B on the left are connected by one linkage 27. In some embodiments, the traction rope may include a steel wire rope, which may be wrapped in a steel wire rope sheath. See Fig.75 In some embodiments, the linkage member 27 connected to the first locking member 211A passes through the hole 15112 of the first tube 1511 and enters the first tube 1511, then enters the hollow pivot 150, then enters the second tube 1521, and finally enters the second seat plate assembly 2B to connect with the corresponding second locking member 211B.

[0431] In addition, each linkage component (the first linkage component 25A and the second linkage component) and the linkage member 27 can be collectively referred to as a linkage device, which is used to connect between the locking members 211 so that these locking members 211 can move together to the release position or the locking position, thereby achieving synchronous release or synchronous locking of the carrier 300 by multiple locking members 211.

[0432] See also Fig.74 and Fig.77In this embodiment, the two first locking members 211A are connected by the first linkage assembly 25A, and each first locking member 211A is connected to the corresponding second locking member 211B through the linkage member 27. In this way, even if the second linkage assembly is not provided between the two second locking members 211B, when any first locking member 211A or any second locking member 211B moves to the unlocking position or the locking position, under the action of the first linkage assembly 25A and the linkage member 27, the effect of synchronously unlocking or locking each locking member 211 (the first locking member 211A and the second locking member 211B) can be achieved. Of course, in some alternative embodiments, the two second locking members 211B may be connected by the second linkage assembly, and each first locking member 211A is still connected to the corresponding second locking member 211B through the linkage member 27. In this way, even if the first linkage assembly 25A is not provided between the two first locking members 211A, the effect of synchronously unlocking or locking each locking member 211 can also be achieved.

[0433] This embodiment shows an exemplary implementation of releasing each locking member 211. Fig.67 and Fig.68 The two wheel seats (more specifically, the front wheel seats 193) on the left and right sides of the frame 100 are respectively provided with release operating members 212, and the two release operating members 212 are operably connected to the two first locking members 211A. By pressing any of the release operating members 212, each locking member 211 can be driven to move to the release position. The support assembly provided by the embodiment of the utility model also includes the release operating member 212.

[0434] See also Fig.79 and Fig.80 More specifically, each release operating member 212 is slidably engaged with the slideway 1930 of the front wheel seat 193. Fig.75 and Fig.79 Each unlocking operating member 212 is connected to the corresponding first locking member 211A in the first seat plate assembly 2A through a traction rope 214. The end 2141 (see Fig.79 ) is connected to the corresponding release operating member 212, and the other end 2142 (see Fig.75) enters the rod 111 of the front support rod 11 and the first pipe 1511 from the front wheel seat 193, and then enters the first seat plate assembly 2A from the hole 15111 of the first pipe 1511, and is connected with the corresponding first locking member 211A. To facilitate the layout of the traction rope 214, the unlocking operation member 212 of the front wheel seat 193 on the left side of the frame is connected with the first locking member 211A on the right side of the frame through the same traction rope 214, and the unlocking operation member 212 of the front wheel seat 193 on the right side of the frame is connected with the first locking member 211A on the left side of the frame through the same traction rope 214. In this way, when any unlocking operation member 212 is pressed, the traction rope 214 will directly pull the corresponding first locking member 211A to move to the unlocking position, and under the action of the first linkage assembly 25A and the linkage member 27, the other locking members 211 also move to the unlocking position.

[0435] In some embodiments, a reset member 195 (see FIG. 1 ) for driving the release operating member 212 to reset can also be installed in the front wheel seat 193. Fig.79 ), the reset member 195 is, for example, a spring. It is understood that the reset member 195 is not necessary, and when each locking member 211 is reset to the locked position, the first locking member 211A can also pull the unlocking operating member 212 to reset through the traction rope 214. In addition, in some embodiments, the frame 100 can also be configured with only one unlocking operating member 212, and each locking member 211 can also be unlocked at the same time. Of course, in some embodiments, the frame 100 can also be configured with more unlocking operating members 212, and the multiple unlocking operating members 212 are, for example, directly connected to the multiple locking members 211 in a one-to-one correspondence. In some embodiments, each unlocking operating member 212 can be, for example, set at other positions of the frame 100 without being limited to the front wheel seat 193.

[0436] See also Fig.79 and Fig.80 , each unlocking operation member 212 may have an unlocking identification area 2121, and the unlocking identification area 2121 is used to assist the user in determining whether the locking member 211 is in the unlocking position. The unlocking identification area 2121 is, for example, a color block (e.g., green) located on the unlocking operation member 212. More specifically, when the unlocking operation member 212 is not pressed, the locking member 211 is in the locking position, and the unlocking identification area 2121 is located outside the front wheel seat 193 and is visible. When the unlocking operation member 212 is pressed, the locking member 211 is in the unlocking position, and the unlocking identification area 2121 slides into the interior of the front wheel seat 193 and is invisible. The user can easily determine whether the locking member 211 is in the locking position or the unlocking position by observing whether the unlocking identification area 2121 is visible.

[0437] See also Fig.75 Each traction rope 214 is, for example, a steel wire rope, and at least part of the steel wire rope may be wrapped in a sheath 2140. Fig.79 At least one guide mechanism 16 for guiding the traction rope 214 may be provided inside the vehicle frame 100. The guide mechanism 16 may include a plurality of guide frames provided at the bends inside the tube body of the vehicle frame 100, and these guide frames guide each traction rope 214 by supporting the sheath 2140. Fig.79 and Fig.80 The guide frame 164 between the rod 111 and the first tube 1511 is shown in FIG.

[0438] See also Fig.79 and Fig.80 In some embodiments, the release operating member 212 has a first driving inclined surface 2123, and the first driving inclined surface 2123 is inclined relative to the sliding direction F3 of the release operating member 212. The end 2141 of the traction rope 214 abuts against the first driving inclined surface 2123 so as to slide along the first driving inclined surface 2123, thereby pulling the first locking member 211A to move. More specifically, when the release operating member 212 is pressed, that is, from Fig.79 The status shown moves down to Fig.80 In the state, the end 2141 of the traction rope 214 moves along the first driving inclined surface 2123 toward the center of the front wheel seat 193, and the traction rope 214 pulls the corresponding first locking member 211A to move toward the unlocking position. In some embodiments, the unlocking operation member 212 is provided with a notch 2120, and the front wheel seat 193 is provided with a hole 1933, and the hole 1933 is communicated with the inner space of the rod 111. The traction rope 214 passes through the notch 2120 and the hole 1933 and enters the rod 111.

[0439] Continue to see Fig.79 and Fig.80 In some embodiments, the unlocking operation member 212 includes, for example, a first limiting wall 2125, which extends downward relative to the first driving inclined surface 2123. A first clamping structure 2126 is formed between the first limiting wall 2125 and the first driving inclined surface 2123. A second limiting wall 1931 is provided in the wheel seat 193, and a second clamping structure 1932 is formed on the second limiting wall 1931. The second clamping structure 1932 is, for example, a concave structure. When the unlocking operation member 212 is not pressed, the end 2141 of the traction rope 214 engages with the first clamping structure 2126 (such as Fig.79 When the unlocking operating member 212 is pressed into place, the end 2141 of the pulling rope 214 engages with the second clamping structure 1932 (eg, Fig.80 ).

[0440] Continue to see Fig.79 and Fig.80In some embodiments, a first guide slope 1934 may be further provided in the wheel seat 193. The first guide slope 1934 is inclined relative to the sliding direction F3 of the unlocking operating member 212, and an angle β is formed between the first guide slope 1934 and the first driving slope 2123, and the angle β is, for example, an acute angle. The end 2141 of the traction rope 214 abuts against both the first driving slope 2123 and the first guide slope 1934 within the range of the angle β. That is, when the end 2141 of the traction rope 214 moves along the first driving slope 2123 between the first clamping structure 2126 and the second clamping structure 1932, the end 2141 of the traction rope 214 also moves along the first guide slope 1934.

[0441] See also Fig.74 and Fig.77 The card seat assembly 200 may further include an elastic device 24, and the elastic device 24 is used to drive each locking member 211 to return to the locking position. Fig.74 In some embodiments, the elastic device 24 may include a spring 2401 disposed between any first locking member 211A and the housing of the first seat plate assembly 2A. For example, a spring 2401 is disposed between each first locking member 211A and the upper housing 201 (or the lower housing 202). Of course, in some embodiments, the spring device 24 may include a spring disposed between two first locking members 211A. When the first locking member 211A moves to the unlocking position, the spring 2401 is compressed. See Fig.77 In some embodiments, the elastic device 24 may include a spring 2402 disposed between any second locking member 211B and the housing of the second seat plate assembly 2B, for example, a spring 2402 is disposed between each second locking member 211B and the upper housing 203 (or the lower housing 204). Of course, in some embodiments, the spring device 24 may include a spring disposed between two second locking members 211B. When the second locking member 211B moves to the unlocking position, the spring 2402 is compressed.

[0442] See also Fig.78 and Fig.81 In some embodiments, the locking portion 2111 of each locking member 211 (the first locking member 211A and the second locking member 211B) may have a slope 2112, which allows each engaging member 311 to enter each engaging channel 22 (the first engaging channel 22A and the second engaging channel 22B) without pressing the release operating member 212.

[0443] See also Figure 81 to Figure 86In some embodiments, the frame 100 may also be equipped with at least one retaining mechanism 23. When each locking member 211 is driven to the unlocking position, the retaining mechanism 23 may directly or indirectly lock each locking member 211 in the unlocking position. The support assembly includes the retaining mechanism 23. In this embodiment, two retaining mechanisms 23 are configured, and the two retaining mechanisms 23 correspond to two locking members 211 (more specifically, the first locking members 211A) one by one. When each first locking member 211A moves to the unlocking position, each retaining mechanism 23 directly locks the corresponding first locking member 211A in the unlocking position, and the second locking member 211B corresponding to each first locking member 211A is indirectly locked in the unlocking position. Therefore, the user does not need to continuously perform the unlocking operation (i.e., press the unlocking operation member 212) on the unlocking operation member 212, and each locking member 211 is kept in the unlocking position. The user only needs to lift the carrier 300 upward to easily remove the carrier 300 from the frame 100.

[0444] As can be seen from the above, when any unlocking operating member 212 drives the corresponding first locking member 211A to the unlocking position, under the action of the linkage assembly 25 and the linkage member 27, all the locking members 211 (the first locking member 211A and the second locking member 211B) are moved to the unlocking position. Similarly, under the action of the linkage assembly 25 and the linkage member 27, as long as one of the locking members 211 (any first locking member 211A or the second locking member 211B) is locked in the unlocking position by the retaining mechanism 23, all the locking members 211 will be locked in the unlocking position. In some alternative embodiments, only one retaining mechanism 23 may be configured for any one of the locking members 211 (any first locking member 211A or the second locking member 211B), and the other locking members 211 may not be configured with the retaining mechanism 23. Of course, in some alternative embodiments, each locking member 211 may be configured with a retaining mechanism 23.

[0445] See also Figure 81 to Figure 87 , shows an exemplary embodiment of the holding mechanism 23. The holding mechanism 23 includes, for example, a movable member 231 and a reset device 236 (see Fig.87 ).

[0446] The movable member 231 can be installed in the slideway 220 which is in communication with the corresponding engaging channel 22 (more specifically, the first engaging channel 22A), and the slideway 220 is located below the first engaging channel 22A. The movable member 231 has an abutting end 2311 adapted to extend into the first engaging channel 22A and a engaging end 2312 away from the abutting end 2311. The abutting end 2311 is adapted to abut with the engaging member 311, and the engaging member 311 located in the first engaging channel 22A pushes the abutting end 2311 from the first engaging channel 22A into the slideway 220. In some embodiments, a first buckle portion 2301 may be provided on the buckle end 2312, and the first buckle portion 2301 is, for example, a card slot.

[0447] See also Fig.75 and Fig.86 In this embodiment, the first locking member 211A may be provided with an elastic arm 213, which extends in the left-right direction to the vicinity of the abutting end 2311 of the movable member 231. The elastic arm 213 may be provided with a second buckle portion 232, which may include, for example, a wedge-shaped step formed on the elastic arm 213. In this embodiment, the elastic arm 213 may be integrally formed with the corresponding first locking member 211A. In some alternative embodiments, the elastic arm 213 may be attached to the corresponding first locking member 211A.

[0448] See also Fig.87 and Fig.88 The reset device 236 may include a first reset member 233, a cable 234 and a sliding member 235. The first reset member 233 and the sliding member 235 are installed in the hollow rod 111 of the front support frame 11, for example. One end of the cable 234 is connected to the sliding member 235, and the other end enters the first connecting member 1511 through the guide frame 164, and then passes through the hole 15112 (see Fig.75 ) enters the first seat plate assembly 2A and connects with the movable member 231. The first reset member 233 abuts against the sliding member 235, and is used to drive the sliding member 235 to reset, so that the cable 234 drives the movable member 231 to move, so that the abutting end 2311 of the movable member 231 extends into the corresponding engaging channel 22 (first engaging channel 22A). In some embodiments, the first reset member 233 is, for example, a spring, which can be clamped between the guide frame 164 and the sliding member 235.

[0449] See also Fig.83 and Fig.84In some embodiments, the movable member 231 has a connection portion 2313 located outside the slideway 220, the cable 234 is supported by the guide frame 165 located outside the slideway 220, and the end 2341 of the cable 234 is connected to the connection portion 2313. The moving direction F4 of the cable 234 located between the guide frame 165 and the connection portion 2313 is parallel to the slideway 220, so that the movable member 231 can be pulled to move into the corresponding first engaging channel 22A with little effort.

[0450] Combine the following Figure 81 to Figure 86 The working process of the holding mechanism 23 will be described below.

[0451] See also Fig.81 When the carrier 300 is not installed on the socket assembly 200, the abutting end 2311 of the movable member 231 extends into the corresponding first locking channel 22A, and the first locking portion 2301 and the second locking portion 232 arranged at the locking end 2312 are separated from each other, and the first locking portion 2301 is located above the second locking portion 232.

[0452] See also Figure 82 to Figure 84 When the carrier 300 is mounted on the card base assembly 200, each engaging member 311 is locked in the corresponding engaging channel 22 by each locking member 211. The movable member 231 is pressed by the engaging member 311 and moves downward along the slideway 220, so that the first locking portion 2301 moves to the moving path of the second locking portion 232 (that is, the clamping end 2312 moves to the moving path of the first locking member 211A). The movement of the movable member 231 will drive the end 2341 of the cable 234 to move downward together, see Fig.88 At the same time, the cable 234 drives the sliding member 235 to overcome the pulling force of the first restoring member 233 and move downward along the rod 111, and the first restoring member 233 is compressed.

[0453] See also Fig.80 and Fig.85When the carrier 300 needs to be removed from the card holder assembly 200, any unlocking operation member 212 is pressed, and the unlocking operation member 212 drives the corresponding first locking member 211A to move to the unlocking position. As can be seen from the above, the other locking members 211 also move to the unlocking position. The second buckle portion 232 moves with the first locking member 211A. When the second buckle portion 232 abuts against the clamping end 2312 of the movable member 231, the elastic arm 213 is elastically deformed to allow the first locking member 211A to continue to move. When the first locking member 211A moves to the unlocking position, the second locking portion 232 is opposite to the first locking portion 2301, and the elastic arm 213 elastically rebounds, so that the second locking portion 232 is engaged with the first locking portion 2301 (that is, the clamping end 2312 is engaged with the first locking member 211A), and the first locking member 211A and other locking members 211 are directly or indirectly locked in the unlocking position by the holding mechanism 23. Afterwards, even if the unlocking operation member 212 is released, under the engagement of the second locking portion 232 and the first locking portion 2301, the elastic device 24 cannot drive each locking member 211 to the unlocking position, and the user does not need to continue pressing the unlocking operation member 212, and only needs to lift the carrier 300 upward to easily remove the carrier 300 from the frame 100.

[0454] After the carrier 300 is removed from the card base assembly 200, the engaging member 311 leaves the engaging channel 22 and no longer presses the abutting end 2311 of the movable member 231. Fig.87 The compressed first restoring member 233 drives the sliding member 235 to reset. When the sliding member 235 resets, it moves upward along the rod 111 and drives the movable member 231 to reset through the cable 234. The abutting end 2311 of the movable member 231 moves upward and extends into the engaging channel 22 again. Fig.86 The clamping end 2312 of the movable member 231 drives the first clamping portion 2301 to move upward and out of the moving path of the second clamping portion 232, and no longer blocks the corresponding first locking member 211A from moving to the locking position. Each locking member 211 is reset to the locking position under the action of the elastic device 24.

[0455] Of course, in some alternative embodiments, the retaining mechanism 23 may also have a variety of implementations, not limited to the above examples. For example, in some alternative embodiments, the first snap-in portion 2301 may be a wedge-shaped step provided on the snap-in end 2312 of the movable member 231, and the second snap-in portion 232 may be a snap-in groove provided on the elastic arm 213. In some alternative embodiments, the movable member 231 of the retaining mechanism 23 is, for example, installed on the second seat plate assembly 2B, and the movable member 231 is suitable for being pressed by the snap-in member 311 entering the second snap-in channel 2B, and the elastic arm provided with the second snap-in portion 232 is correspondingly connected to the second locking member 211B. See FIG. Fig.76In some embodiments, the reset device 236 of the holding mechanism 23 may further include a reset member 237 , which abuts against the movable member 231 to drive the abutting end 2311 of the movable member 231 to move upward and extend into the engaging channel 22 .

[0456] See also Fig.87 and Fig.88 In some embodiments, the sliding member 235 has a snap-in indication area 2351, and the rod 111 is provided with an observation hole 110 for observing the snap-in indication area 2351. The snap-in indication area 2351, for example, includes a color block (e.g., green) located on the sliding member 235. In combination with the above, it can be seen that when the movable member 231 is pressed by the snap-in member 311, the sliding member 235 is pulled down by the cable 234, and at this time, the green color block of the snap-in indication area 2351 moves to the observation hole 110 and is visible. The user can thus determine that the movable member 231 has been pressed by the snap-in member 311 of the carrier, and further determine that the carrier 300 has been locked by the card base assembly 200. When the movable member 231 is not pressed by the snap-in member 311, the green color block of the snap-in indication area 2351 is reset to the top of the observation hole 110 and is not visible. At this time, even if the carrier 300 may have been placed on the card base assembly 200, it is not locked by the card base assembly 200. The user can adjust the relative position of the carrier 300 and the holder assembly 200 according to the display of the locking indication area 2351 , so that the carrier 300 can be securely locked by the holder assembly 200 .

[0457] Fifth embodiment

[0458] Fig.89 A stereoscopic view of a wheeled mobile device 1000 provided according to the fifth embodiment of the utility model is shown, and the wheeled mobile device 1000 may include a frame 100, a base assembly 200 and a carrier 300. The wheeled mobile device 1000 of this embodiment is a variation of the wheeled mobile device 1000 of the fourth embodiment described above. In the absence of conflict, the structure of the components in this embodiment and the connection relationship between the components can refer to the description in the fourth embodiment above, and the following mainly describes the differences between this embodiment and the fourth embodiment described above. It can be understood that the wheeled mobile device 1000 provided in this embodiment also includes a support assembly provided according to some embodiments of the utility model, and the support assembly includes at least a base assembly 200, and may also include a first connecting member 151 and an auxiliary support member 152.

[0459] Combined with reference Figure 90 to Figure 92In the embodiment of the utility model, the retaining mechanism 23 is modified. The retaining mechanism 23 includes a movable member 231 and a reset device 236. Among them, the reset device 236 includes a reset member 237, but the first reset member 233, the cable 234 and the sliding member 235 in the fourth embodiment are omitted. Accordingly, the observation hole 110 in the fourth embodiment may not be provided on the rod 111, and the movable member 231 may accordingly omit the connecting portion 2313 in the fourth embodiment for connecting with the cable 234. In addition, the traction rope 214 and the linkage member 27 can enter the interior of the first seat plate assembly 2A from the hole 15111 of the first pipe 15111, so that the hole 15112 in the fourth embodiment can be omitted.

[0460] See also Figure 91 to Figure 94 In some embodiments, the reset member 237 may be, for example, a spring, one end of which abuts against the movable member 231, and the other end of which abuts against, for example, the lower shell 202 of the first seat plate assembly 2A. When the engaging member 311 of the carrier 300 is inserted into the engaging channel 22 and abuts against the abutting end 2311 of the movable member 231, the movable member 231 moves downward and compresses the reset member 237. When the engaging member 311 leaves the engaging channel 22 and no longer abuts against the abutting end 2311 of the movable member 231, the reset member 237 is elastically reset and drives the movable member 231 to move upward, and the abutting end 2311 of the movable member 231 extends into the engaging channel 22 again. In some embodiments, the movable member 231 may be provided with, for example, a chamber 2310 for accommodating the reset member 237.

[0461] Combined with reference Figure 91 to Figure 93 In some embodiments, the movable member 231 is further provided with a limiting portion 2314, and the limiting portion 2314 is located outside the slide 220, and the limiting portion 2314 protrudes toward the corresponding locking member 211, for example. A matching portion 2113 for abutting against the limiting portion 2314 is provided on the locking member 211. In some embodiments, the locking member 211 has a recess 210, and the matching portion 2113 is formed on the wall of the recess 210. More specifically, when the reset member 237 drives the movable member 231 to move up and down, the limiting portion 2314 moves up and down accordingly, so as to be able to move to the moving path of the locking member 211 or exit the moving path of the locking member 211. See Fig.92 When the locking member 211 is in the unlocking position and the engaging member 311 has just moved out of the engaging channel 22, the reset member 237 drives the movable member 231 to move upward, and the abutting end 2311 of the movable member 231 extends into the engaging channel 22, while the limiting portion 2314 moves to the moving path of the locking member 211. Fig.93When the abutting end 2311 is inserted into the engaging channel 22, the limiting portion 2314 remains in abutment with the matching portion 2113. The abutment between the limiting portion 2314 and the matching portion 2113 can prevent the locking member 211 from returning to its locked position. In this way, when the carrier 300 needs to be installed again, the engaging member 311 of the carrier 300 can enter the engaging channel 22 without being hindered by the locking member 211.

[0462] Combine the following Figures 94 to 98 The working process of the holding mechanism 23 will be described below.

[0463] See also Fig.94 When the carrier 300 is mounted on the card base assembly 200, each engaging member 311 is locked in the corresponding engaging channel 22 by each locking member 211. Fig.95 The abutting end 2311 of the movable member 231 is pressed by the engaging member 311 and moves downward along the slide 220 and exits from the engaging channel 22, so that the first engaging portion 2301 moves to the moving path of the second engaging portion 232 (that is, the engaging end 2312 moves to the moving path of the first locking member 211A), and at the same time, the limiting portion 2314 moves out of the moving path of the locking member 211, and the reset member 237 is compressed.

[0464] See also Fig.96 Combined with the description of the fourth embodiment, when the carrier 300 needs to be removed from the card base assembly 200, any unlocking operation member 212 is pressed, and the unlocking operation member 212 drives the corresponding first locking member 211A to move toward the unlocking position along the direction Y1, and the other locking members 211 also move toward the unlocking position together. The second buckle portion 232 moves with the first locking member 211A, and when the second buckle portion 232 abuts against the clamping end 2312 of the movable member 231, the elastic arm 213 is elastically deformed to allow the first locking member 211A to continue to move. When the first locking member 211A moves to the unlocking position, the second locking portion 232 is opposite to the first locking portion 2301. At this time, the elastic arm 213 rebounds elastically, so that the second locking portion 232 is engaged with the first locking portion 2301 (that is, the engaging end 2312 is engaged with the first locking member 211A). The first locking member 211A and other locking members 211 are directly or indirectly locked in the unlocking position by the retaining mechanism 23. Afterwards, even if the unlocking operating member 212 is released, the elastic device 24 cannot drive each locking member 211 to the unlocking position due to the engagement between the second locking portion 232 and the first locking portion 2301. The user does not need to continue pressing the unlocking operating member 212, but only needs to lift the carrier 300 upwards to easily remove the carrier 300 from the frame 100. Fig.96It can be seen that when each locking member 211 is locked in the unlocking position, the recess 210 is located above the limiting portion 2314, making room for the upward movement of the limiting portion 2314. In some embodiments, when the second buckle portion 232 is engaged with the first buckle portion 2301, the matching portion 2113 and the limiting portion 2314 have a small interval D in the moving direction of the corresponding locking member 211, and the matching portion 2113 is in a position that does not interfere with the upward movement of the limiting portion 2314.

[0465] See also Fig.97 and Fig.98 When the carrier 300 is removed from the card holder assembly 200, the engaging member 311 leaves the engaging channel 22 and no longer presses the abutting end 2311 of the movable member 231. The compressed reset member 237 resets and directly drives the abutting end 2311 of the movable member 231 to move upward and extend into the engaging channel 22 (first engaging channel 22A) again. During the upward movement of the movable member 231, at the moment when the second buckle portion 232 is disengaged from the first buckle portion 2301, the movable member 231 continues to move upward, and while the limiting portion 2314 moves upward to the moving path of the first locking member 211A, the locking member 211 is pushed by the elastic device 24 and moves along the direction Y2 to the locking position by the distance of the above-mentioned interval D (see Fig.96 ), until the matching portion 2113 abuts against the limiting portion 2314. At this time, the locking member 211 cannot continue to move to the locking position due to the obstruction of the limiting portion 2314. It can be understood that because the interval D is very small, after the engaging member 311 of the carrier 300 is moved out of the engaging channel 22, each locking member 211 is still maintained at the unlocking position.

[0466] See also Fig.98, when the abutting end 2311 of the movable member 231 is inserted into the engaging channel 22, although the first buckle portion 2301 of the movable member 231 moves upward and out of the moving path of the second buckle portion 232, and no longer blocks the corresponding first locking member 211A from moving to the locking position, under the action of the mutually abutting limiting portion 2314 and the matching portion 2113, each locking member 211 is still kept in the unlocking position. In this way, when the carrier 300 needs to be installed again, the engaging member 311 of the carrier 300 can enter the engaging channel 22 without being hindered by the locking member 211. In addition, because the locking member 211 moves along the direction Y2 to the locking position by the distance D before the matching portion 2113 abuts against the limiting portion 2314, the first buckle portion 2301 and the second buckle portion 232 are not aligned in the moving direction of the movable member 231. When one of the first locking portion 2301 and the second locking portion 232 is a locking groove and the other is a wedge-shaped step, the groove wall 23011 of the locking groove will correspond to the side surface 2321 of the wedge-shaped step. In some embodiments, at least one of the groove wall 23011 and the side surface 2321 includes an inclined surface (in this embodiment, the side surface 2321 includes the inclined surface 23211 as an example).

[0467] When the carrier 300 needs to be installed on the card base assembly 200 again, the engaging member 311 is placed in the engaging channel 22 so that the engaging end 2312 of the movable member 231 is compressed and withdraws from the engaging channel 22. During the process of the engaging end 2312 withdrawing from the engaging channel 22, the restoring member 237 is compressed, and the limiting portion 2314 moves downward and out of the moving path of the first locking member 211A, so that the limiting portion 2314 no longer abuts against the matching portion 2113, and no longer hinders the corresponding first locking member 211A from moving to the locked position. During the downward movement of the limiting portion 2314, the groove wall 23011 and the side surface 2321 are in contact through the inclined surface 23211. Under the action of the inclined surface 23211, the elastic arm 213 drives the second buckle portion 232 to move away from the first buckle portion 2301, thereby preventing the second buckle portion 232 from being engaged with the first buckle portion 2301, thereby not affecting the elastic device 24 driving each locking member 211 to move to the locked position. When the engaging member 311 is placed in place, each locking member 211 is driven to the locked position by the elastic device 24.

[0468] The manner of releasing each locking member 211 in this embodiment is similar to that in the fourth embodiment. Release operating members 212 are respectively installed on the two wheel seats (more specifically, the front wheel seat 193) on the left and right sides of the frame 100, and the two release operating members 212 are operably connected to the two first locking members 211A. By pressing any of the release operating members 212, each locking member 211 can be driven to move to the release position. In addition, each release operating member 212 can have a release identification area 2121, which is used to assist the user in determining whether the locking member 211 is in the release position. The release identification area 2121 is, for example, a color block (e.g., green) located on the release operating member 212. When the release operating member 212 is not pressed, the locking member 211 is in the locked position, and the release identification area 2121 is located outside the front wheel seat 193 and is visible. When the unlocking operation member 212 is pressed, the locking member 211 is in the unlocking position, and the unlocking identification area 2121 slides into the interior of the front wheel seat 193 and becomes invisible.

[0469] See also Figures 99 to 102 In order to avoid the situation where the release identification area 2121 of the release operating member 212 that is directly pressed becomes invisible, while the release identification area 2121 of the release operating member 212 that is not directly pressed is still visible, causing identification difficulties for the user, a release state synchronization mechanism 196 is further provided in the present embodiment. The release state synchronization mechanism 196 can allow the release identification areas 2121 of different release operating members 212 to be visible or invisible at the same time.

[0470] In this embodiment, an exemplary implementation of the unlocking state synchronization mechanism 196 is shown. The unlocking state synchronization mechanism 196, for example, includes a second reset member 1961, the second reset member 1961 abuts against the end 2141 of the traction rope 214, and the second reset member 1961 is suitable for providing a force for the end 2141 of the traction rope 214 to move from the first clamping structure 2126 to the second clamping structure 1932. In this way, when a unlocking operation member 212 is directly pressed, the end 2141 of the traction rope 214 corresponding to the unlocking operation member 212 that is not directly pressed moves toward the second clamping structure 1932 under the drive of the second reset member 1961 and is separated from the first driving inclined surface 2123, which allows the unlocking operation member 212 that is not directly pressed to slide downward under the action of gravity. As a result, the unlocking identification area 2121 of the unlocking operation member 212 that is not directly pressed and the unlocking operation member 212 that is directly pressed are not visible at the same time. The two unlocking operating members 212 are in a state of releasing the locking member 211 at the same time.

[0471] Combine the following Figures 99 to 102 The working process of each unlocking operating member 212 is described in detail.

[0472] See also Fig.99 and Fig.100In some embodiments, the second reset member 1961 may be a spring, which is sleeved outside the traction rope 214 and one end of the spring abuts against the end 2141 of the traction rope 214, and the other end of the spring may be limited by any suitable structure. For example, the other end of the spring may abut against the guide frame 164. When each locking member 211 is in the locked position and the two unlocking operating members 212 are not directly pressed, the traction ropes 214 corresponding to the two first locking members 211A are in a tensioned state. The ends 2141 of the two traction ropes 214 are respectively engaged with the corresponding first clamping structures 2126, and each second reset member 1961 is compressed.

[0473] See also Fig.101 and Fig.102 The two release operating members 212 include a release operating member 212A on the left side or a release operating member 212B on the right side. When the user directly presses any of the release operating members 212, for example, directly pressing the release operating member 212A on the left side, the end 2141 of the traction rope 214 connected to the release operating member 212A on the left side moves toward the second clamping structure 1932 along the first driving inclined surface 2123 and the first guiding inclined surface 1934 under the drive of the first driving inclined surface 2123. When the release operating member 212A is pressed into place, the release identification area 2121 on the release operating member 212A enters the interior of the left front wheel seat 193 and becomes invisible, and the first locking member 211A operably connected to the release operating member 212A moves to the release position.

[0474] As can be seen from the description in the fourth embodiment, under the action of the first linkage assembly 25A, when the first locking member 211A operably connected to the unlocking operating member 212A moves to the unlocking position, the first locking member 211A operably connected to the unlocking operating member 212B on the right side is synchronously switched from the locking position to the unlocking position. In this process, the traction rope 214 connected to the unlocking operating member 212B (hereinafter referred to as the right traction rope 214) has a tendency to relax. At this time, the second reset member 1961 corresponding to the right traction rope 214 drives the end 2141 of the right traction rope 214 to move from the first clamping structure 2126 to the second clamping structure 1932. The end 2141 of the right traction rope 214 is separated from the first driving inclined surface 2123 of the unlocking operation member 212B, which allows the unlocking operation member 212B to automatically slide down in the slideway 1930 under the action of gravity, so that the unlocking identification area 2121 on the unlocking operation member 212B enters the interior of the right front wheel seat 193 and becomes invisible. At this time, the unlocking identification areas 2121 of the two unlocking operation members 212 are invisible at the same time, and the user can directly judge whether the locking member 211 is in the locked position or the unlocked position by observing any of the unlocking identification areas 2121, and it is not easy to make a misjudgment.

[0475] When each locking member 211 moves from the unlocking position to the locking position, each first locking member 211A drives the corresponding traction rope 214 to move synchronously, and the end 2141 of each traction rope 214 simultaneously drives the first driving inclined surface 2123 of the corresponding unlocking operating member 212A and the unlocking operating member 212B, so that the unlocking operating member 212A and the unlocking operating member 212B move upward synchronously. The unlocking identification area 2121 of the unlocking operating member 212A and the unlocking operating member 212B is simultaneously exposed to the outside of the front wheel seat 193 and visible. The two unlocking operating members 212 are simultaneously in a state of not unlocking the locking member 211.

[0476] Sixth embodiment

[0477] Fig.103 A perspective view of a wheeled mobile device 1000 provided according to a sixth embodiment of the utility model is shown. The wheeled mobile device 1000 is similar to the fourth embodiment, and includes a frame 100, a card seat assembly 200 and a carrier 300. The wheeled mobile device 1000 includes a support assembly provided according to another embodiment of the utility model, and the support assembly will be described together with the wheeled mobile device 1000 below.

[0478] The structure of the frame 100 is substantially bilaterally symmetrical. The frame 100 may include a front support rod 11, a rear support rod 12, an upper support rod 13 and a handrail 14. The frame 100 can be folded and have an unfolded state (see FIG. Fig.104 ) and folded state (see Fig.105 ).

[0479] See also Fig.104 The front support rod 11 is, for example, a U-shaped structure, including two rods 111 located at the left and right sides and a first crossbar 101 connected between the two rods 111, and the first crossbar 101 extends along the left and right direction (first direction F1). Two front wheel seats 193 are installed at the left and right ends of the first crossbar 101, and each front wheel seat 193 is used to install a front wheel 191, which can be a universal wheel or a non-universal wheel.

[0480] The rear support rod 12 is, for example, a U-shaped structure, including two rods 121 located on the left and right sides and a rear crossbar 122 connected between the two rods 121, and the rear crossbar 122 extends along the left and right direction (first direction F1). The upper ends of the rods 121 are, for example, respectively pivoted to the upper ends of the rods 111 of the front support rod 11 on the same side through the pivoting portion 118. The rear support rod 12 is equipped with two rear wheel seats 194, and the two rear wheel seats 194 are arranged at intervals in the left and right direction. Each rear wheel seat 194 is used to install a rear wheel 192, which can be a universal wheel or a non-universal wheel.

[0481] The upper support rod 13 includes two rods 131 located on the left and right sides, the lower end of each rod 131 is respectively pivotally connected to the pivoting portion 118 on the same side, and the upper end of each rod 131 is respectively connected to the armrest 14. In some embodiments, the armrest 14 is, for example, a U-shaped structure, including two rods 141 located on the left and right sides, and the two rods 141 of the armrest 14 are connected to the two rods 131, for example, through a telescopic structure, so that the height of the armrest 14 can be changed.

[0482] In some embodiments, the pivoting portion 118 includes a locking mechanism (not shown) for locking the relative positions of the front support rod 11, the rear support rod 12, and the upper support rod 13, and the locking mechanism is used to keep the frame 100 in the unfolded state. When the locking mechanism is released, the frame 100 is allowed to change to the folded state.

[0483] See also Figures 106 to 108 In this embodiment, the support assembly includes a first connecting member 151, an auxiliary supporting member 152 and a card seat assembly 200. Different from the fourth embodiment described above, the first connecting member 151 and the auxiliary supporting member 152 are not connected between the front supporting rod 11 and the rear supporting rod 12 of the frame 100, but can be detachably connected to the frame 100. The first seat plate assembly 2A of the card seat assembly 200 is installed on the first connecting member 151, and the second seat plate assembly 2B is installed on the auxiliary supporting member 152. The card seat assembly 200 is used to support and lock the carrier 300. In the wheeled mobile device 1000 provided in this embodiment, the support assembly can be removed from the frame 100 as a whole, so that the frame 100 can be detachably connected to the card seat assembly 200, and the card seat assembly 200 can be detachably connected to the carrier 300.

[0484] See also Fig.104 , Fig.106 and Fig.107 In some embodiments, the first seat plate assembly 2A is connected to the first pivot seat 81 through the first connecting member 151, and the second seat plate assembly 2B is connected to the second pivot seat 82 through the auxiliary support member 152. The first pivot seat 81 and the second pivot seat 82 are pivotally connected and have a rotation axis XX. In some embodiments, the first pivot seat 81 is close to the longitudinal center plane of the frame 100 (which can also be called the left-right symmetric plane of the frame 100), and the second pivot seat 82 is away from the longitudinal center plane of the frame 100. The second pivot seat 82 is also pivotally connected to the mounting seat 83, and the mounting seat 83 can be installed on the pivot portion 118 of the frame 100, and can be detachably connected to the locking hole (not shown in the figure) on the pivot portion 118 through the locking member 831.

[0485] See also Fig.104 and Fig.107When the vehicle frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary supporting member 152 are unfolded and arranged substantially horizontally, and the angle α between the two is approximately 180 degrees. Of course, in some embodiments, when the vehicle frame 100 is in the unfolded state, the angle α formed between the first connecting member 151 and the auxiliary supporting member 152 may be an obtuse angle greater than 90 degrees. In some embodiments, a locking mechanism may be provided between the first pivot seat 81 and the second pivot seat 82, and the locking mechanism is used to lock the relative position between the first pivot seat 81 and the second pivot seat 82 to keep the first connecting member 151 and the auxiliary supporting member 152 in the unfolded state.

[0486] When the frame 100 needs to be folded, the first connecting member 151 and the auxiliary supporting member 152 can rotate relative to each other to be folded, and the angle α formed by the folded first connecting member 151 and the auxiliary supporting member 152 is an acute angle less than 90 degrees (see Fig.105 ).

[0487] See also Fig.107 and Fig.108 In some embodiments, the first connecting member 151 may include two first pipes 1511 disposed in parallel and an intermediate pipe 1512 connected between the two first pipes 1511. The auxiliary supporting member 152 may include two second pipes 1521 disposed in parallel and an intermediate pipe 1522 connected between the two second pipes 1521. The ends of each first pipe 1511 are respectively connected to the corresponding first pivot seat 81, and the ends of each second pipe 1521 are respectively connected to the corresponding second pivot seat 82. The first pivot seat 81 and the second pivot seat 82 on the same side are pivotally connected.

[0488] See also Fig.107 In some embodiments, a release member 84 is installed on the first pivot seat 81 through a pivot 841, and the pivot 841 is parallel to the second direction F2. The release member 84 can rotate around the pivot 841 to release the position lock between the first pivot seat 81 and the second pivot seat 82, thereby allowing the first pivot seat 81 and the second pivot seat 82 to rotate relative to each other. In some embodiments, the release member 84 can be provided with a hole 840, and a pulling member 842 can be installed in the hole 840, and the pulling member 842 is, for example, a webbing. When the first connecting member 151 and the auxiliary support member 152 need to be folded, the release member 84 is driven to rotate around the pivot 841 by the pulling member 842. After the release member 84 is rotated to the right position, the position lock between the first pivot seat 81 and the second pivot seat 82 is released, and the user can manually drive the first connecting member 151 and the auxiliary support member 152 to be folded. In some embodiments, when the first pivot seat 81 and the second pivot seat 82 rotate relative to each other, the driving member 85 on the mounting seat 83 can be driven to move, and the movement of the driving member 85 will drive the first pivot portion 118 (see Fig.105) is released, thereby releasing the position lock of the front support rod 11, the rear support rod 12 and the upper support rod 13, and the front support rod 11, the rear support rod 12 and the upper support rod 13 can be folded.

[0489] See also Fig.107 and Fig.108 In some embodiments, the card base assembly 200 may include a first seat plate assembly 2A and a second seat plate assembly 2B. The first seat plate assembly 2A is mounted on the first connecting member 151, and the second seat plate assembly 2B is mounted on the auxiliary support member 152. In combination with the above, it can be seen that the first seat plate assembly 2A and the second seat plate assembly 2B can rotate relative to each other about the rotation axis XX, so that the card base assembly 200 has an unfolded state and a folded state. Fig.104 , the unfolded state of the card holder assembly 200 corresponds to the unfolded state of the frame 100. Fig.105 The folded state of the card holder assembly 200 corresponds to the folded state of the frame 100.

[0490] It should be noted that in some alternative embodiments, the support assembly may not be provided with the first connecting member 151 and the auxiliary support member 152. The first seat plate assembly 2A, for example, is directly connected to the first pivot seat 81, and the second seat plate assembly 2B, for example, is directly connected to the second pivot seat 82. This is also within the scope of protection of the present utility model.

[0491] See also Fig.104 and Fig.107 , the first seat plate assembly 2A is mounted to the first connecting member 151 and is provided with a locking mechanism, more specifically, a first locking mechanism 21A. The second seat plate assembly 2B is mounted to the auxiliary support member 152 and is provided with a locking mechanism, more specifically, a second locking mechanism 21B. The first seat plate assembly 2A and the second seat plate assembly 2B each include at least one engaging channel 22, each engaging channel 22 extending in the front-to-back direction (the second direction F2). The first locking mechanism 21A and the second locking mechanism 21B each include at least one locking member 211, each locking member 211 moves in the left-right direction (the first direction F1) to have a locking position extending into the corresponding engaging channel 22 and a release position retracted from the corresponding engaging channel 22. The moving direction of each locking member 211 is parallel to the rotation axis XX. It can be understood that when the locking member 211 is in the locking position, the carrier 300 can be locked, and when the locking member 211 is in the release position, the carrier 300 is allowed to be removed from the card seat assembly 200.

[0492] Continue to see Fig.104 , Fig.106 and Fig.108, the engaging channel 22 on the first seat plate assembly 2A can be referred to as the first engaging channel 22A, and the engaging channel 22 on the second seat plate assembly 2B can be referred to as the second engaging channel 22B. The locking member 211 of the first locking mechanism 21A can be referred to as the first locking member 211A, and the first locking member 211A is, for example, located directly above the intermediate pipe 1512. The locking member 211 of the second locking mechanism 21B can be referred to as the second locking member 211B, and the second locking member 22B is, for example, located directly above the intermediate pipe 1522. In this embodiment, the number of the first engaging channel 22A and the first locking member 211A can both be two, and the directions of unlocking and locking of the two first locking members 211A are opposite. The number of the second engaging channel 22B and the second locking member 211B can both be two, and the directions of unlocking and locking of the two second locking members 211B are opposite. Of course, in some alternative embodiments, the releasing and locking directions of the two first locking members 211A may be consistent, and the releasing and locking directions of the two second locking members 211B may be consistent.

[0493] See also Fig.108 In some embodiments, the first seat plate assembly 2A includes, for example, an upper shell 201 and a lower shell 202, the first engaging channel 22A is formed on the upper shell 201, and the first locking member 211A is located in the accommodating cavity surrounded by the upper shell 201 and the lower shell 202. The second seat plate assembly 2B includes, for example, an upper shell 203 and a lower shell 204, the second engaging channel 22B is formed on the upper shell 203, and the second locking member 211B is located in the accommodating cavity surrounded by the upper shell 203 and the lower shell 204.

[0494] Fig.103 Another exemplary embodiment of a carrier 300 is shown. The carrier 300 is, for example, a baby carrier. The support device of the baby carrier includes an annular structure located at the bottom. The annular structure is exposed at the bottom of the carrier 300. The annular structure (which can be regarded as a snap-fitting member 311) has two rods parallel to each other, which can be used to snap-fit ​​with each snap-fitting channel 22 (the first snap-fitting channel 22A and the second snap-fitting channel 22B). When the carrier 300 is supported and locked by the base assembly 200, each snap-fitting member 311 is respectively snapped into the corresponding first snap-fitting channel 22A and the second snap-fitting channel 22B, and is respectively locked by the first locking member 211A of the first locking mechanism 21A and the second locking member 211B of the second locking mechanism 21B.

[0495] See also Fig.106When each locking member 211 (the first locking member 211A and the second locking member 211B) is in the locking position, the locking portion 2111 (such as a locking tongue) of each locking member 211 extends into the corresponding engaging channel 22 (the first engaging channel 22A and the second engaging channel 22B) to lock the corresponding engaging member 311, so that the engaging member 311 cannot be removed from the engaging channel 22. When the two first locking members 211A move toward each other and the two second locking members 211B move toward each other and retract from the corresponding engaging channel 22, the engaging member 311 is allowed to be removed from the corresponding engaging channel 22, and the carrier 300 can be removed from the base 200.

[0496] See also Fig.108 In some embodiments, the two first locking members 211A are connected by a first linkage assembly 25A, and the first linkage assembly 25A controls the two first locking members 211A to move synchronously, so that the two first locking members 211A switch synchronously between their locked positions and unlocked positions. In this way, any first locking member 211A can be unlocked, that is, the other first locking member 211A can be unlocked at the same time. Of course, when any first locking member 211A moves to the locked position, under the action of the first linkage assembly 25A, the other first locking member 211A moves synchronously to the locked position. The connection relationship between the first linkage assembly 25A and each first locking member 211A can be referred to the description in the fourth embodiment, and will not be repeated here.

[0497] Continue to see Fig.108 In some embodiments, the first locking member 211A of the first locking mechanism 21A and the second locking member 211B of the second locking mechanism 21B can be connected through corresponding linkage members 27 to synchronously switch between their respective locking positions and unlocking positions. In this way, any first locking member 211A or second locking member 211B can be unlocked, that is, the corresponding second locking member 211B or first locking member 211A can be synchronously unlocked.

[0498] Continue to see Fig.108 In some embodiments, the linkage 27 may be a traction rope. The first locking member 211A and the second locking member 211B arranged diagonally are connected by the same linkage 27. Thus, the unlocking and locking movement directions of the first locking member 211A and the second locking member 211B connected to the same linkage 27 are opposite, so as to synchronously lock or unlock the carrier 300. More specifically, the first locking member 211A on the left and the second locking member 211B on the right are connected by one linkage 27, and the first locking member 211A on the right and the second locking member 211B on the left are connected by one linkage 27. In some embodiments, the traction rope may include a steel wire rope, and at least a portion of the steel wire rope may be wrapped in a steel wire rope sheath.

[0499] See also Figures 107 to 113 In some embodiments, the first pivot seat 81 and / or the second pivot seat 82 is provided with a guide structure 801, and each linkage member 27 has a guide section 270 that cooperates with the guide structure 801. When the first connecting member 151 and the auxiliary support member 152 rotate relative to each other, the guide section 270 cooperates with the guide structure 801 to avoid the accumulation of the traction rope of the linkage member 27.

[0500] See also Fig.109 In some embodiments, the first pivot seat 81 includes a plate body 811 and a cover body 812. The plate body 811 has a sleeve 813, and the sleeve 813 is used to connect with the first pipe 1511 of the first connecting member 151. One side of the plate body 811 is opposite to the second pivot seat 82 (see Fig.107 ), the cover 812 is mounted on the other side of the tray body 811. The tray body 811 has a groove 8110, and the pivoting portion 845 of the release member 84 extends into the groove 8110 and is connected to the tray body 811 through the pivot 841. Fig.106 In some embodiments, the shapes of the cover 8...

Claims

1. A card holder assembly, characterized in that: include: A seat plate assembly, used to place objects thereon; A locking mechanism comprising at least one locking member; The at least one locking member is disposed on the seat plate assembly and is capable of sliding between a first locking position and a first unlocking position; When the locking element is in the first locking position, the locking element is capable of locking the object; When the locking element is in the first unlocking position, the locking element is capable of unlocking the object.

2. The card holder assembly according to claim 1, characterized in that: The locking mechanism is mounted on the seat plate assembly, and the locking mechanism further comprises at least one unlocking operating member, the unlocking operating member is connected to the locking member, and the unlocking operating member can slide between a second locking position and a second unlocking position; When the release operating member is in the second locking position, the locking member is in the first locking position; when the release operating member is operated to move from the second locking position to the second release position, the locking member moves to the first release position along with the movement of the release operating member.

3. The card holder assembly according to claim 2, characterized in that: The release operating member and / or the locking member is provided with a second driving inclined surface, and the release operating member and the locking member are operably connected via the second driving inclined surface, so that the moving direction of the release operating member is perpendicular to the moving direction of the locking member.

4. The card holder assembly according to claim 3, characterized in that: The locking member is provided with an extension portion, the extension portion is provided with an inclined hole, the second driving inclined surface is arranged on the hole wall of the inclined hole; the unlocking operating member is provided with a driving pin which is slidably matched with the inclined hole.

5. The card holder assembly according to claim 1, characterized in that: The locking mechanism includes two first locking members, and the two first locking members are connected by a linkage device. When any one of the first locking members is subjected to force and moves toward the first unlocking position, the linkage device drives the other first locking member to move synchronously toward the first unlocking position.

6. The card holder assembly according to claim 5, characterized in that: The two first locking members are arranged on the same side of the seat plate assembly; The two first locking members move in the same direction to switch to the first locking position or the first unlocking position; or the two first locking members move in opposite directions to switch to the first locking position or the first unlocking position; The card seat assembly also includes at least one elastic device, and the elastic device applies a force to the first locking member to move toward the first locking position.

7. The card holder assembly according to claim 5, characterized in that: The linkage device includes a linkage assembly connected between the two first locking members. When any one of the first locking members is subjected to force and moves between the first release position and the first lock position, the linkage assembly drives the other first locking member to move synchronously between the first release position and the first lock.

8. The card holder assembly according to claim 7, characterized in that: The linkage assembly includes a fixed connection point located between the two first locking members, and two pivots located on both sides of the fixed connection point. The linkage assembly is pivotally connected to the two first locking members through the two pivots. When any of the first locking members moves, the two pivots move in opposite directions, so that the two first locking members move synchronously in opposite directions.

9. The card holder assembly according to claim 7, characterized in that: The linkage assembly comprises a first link, a second link, a third link and a fourth link, wherein the first link, the second link, the third link and the fourth link are connected in pairs to form four connection points, one of the four connection points is a fixed connection point, the fixed connection point is fixed to the seat plate assembly, the connection point opposite to the fixed connection point among the four connection points is a central connection point, and two links among the first link, the second link, the third link and the fourth link connected to the central connection point are respectively connected to the two first locking members; A line connecting the fixed connection point and the central connection point is perpendicular to the moving directions of the two first locking members.

10. The card holder assembly according to claim 6, characterized in that: The locking mechanism comprises two second locking members, which are arranged on the other side of the seat plate assembly and are parallel to the two first locking members, and the two second locking members have corresponding settings to the two first locking members.

11. The card holder assembly according to claim 6, characterized in that: The locking mechanism includes two second locking members, which are arranged on the other side of the seat plate assembly and are parallel to the two first locking members; the two first locking members and the two second locking members are connected by the linkage device, and the linkage device allows the two first locking members and the two second locking members to move synchronously to the first release position.

12. The card holder assembly according to claim 1, characterized in that: The locking mechanism comprises at least one first locking member and at least one second locking member, wherein the moving direction of the at least one first locking member is parallel to the moving direction of the at least one second locking member; Among them, the first locking member and the second locking member located on the diagonal line of the at least one first locking member and the at least one second locking member are connected by a linkage device, and the linkage device allows the connected first locking member and the second locking member to move in opposite directions and synchronously switch to the first release position.

13. The card holder assembly according to claim 12, characterized in that: The linkage device comprises a linkage member, the linkage member is a connecting rod or a traction member, and the first locking member and the second locking member located on the diagonal line are connected through the linkage member; And / or, the socket assembly further comprises at least one elastic device, wherein the elastic device applies a force to the first locking member and / or the second locking member to move toward the first locking position.

14. The card holder assembly according to claim 13, characterized in that: The locking mechanism comprises two first locking members and two second locking members, and the two first locking members and the two second locking members are connected via two linkage members.

15. The card holder assembly according to claim 14, characterized in that: The two linkage members are connecting rods respectively, and the two linkage members are arranged to cross each other.

16. The card holder assembly according to claim 15, characterized in that: The two linkage members are pivotally connected at their intersection; And / or, the connection points of the two linkage members and the two second locking members define an angle relative to the intersection of the two linkage members, and when the locking member moves from the first locking position to the first unlocking position, the angle becomes smaller.

17. The card holder assembly according to claim 1, characterized in that: The card seat assembly also includes two support frames, which are used to support the seat plate assembly; the two support frames are respectively arranged on the left and right sides of the seat plate assembly, and each of the support frames includes a longitudinal rod, a connecting rod and a shock-absorbing rod connected into a triangular structure.

18. The card holder assembly according to claim 17, characterized in that: The longitudinal rod is arranged below the seat plate assembly and is fixedly connected to the seat plate assembly; the first end of the connecting rod is connected to the first end of the longitudinal rod, and the second end of the connecting rod is connected to the first end of the shock-absorbing rod; the second end of the shock-absorbing rod is connected to the longitudinal rod; the shock-absorbing rod is elastic to provide buffering support to the seat plate assembly.

19. The card holder assembly according to claim 18, characterized in that: The card holder assembly is used to be installed on a foldable frame; Each of the support frames also includes a first connecting component and a second connecting component, the first end of the first connecting component and the first end of the second connecting component are respectively pivotally connected to the second end of the connecting rod, the second end of the first connecting component, the second end of the second connecting component and the first end of the connecting rod are respectively pivotally connected to different rods of the frame that can be folded relative to each other.

20. The card holder assembly according to claim 18, characterized in that: A first connecting rod is connected between the longitudinal rods of the two support frames; and / or a second connecting rod is connected between the connecting rods of the two support frames.

21. The card holder assembly according to claim 18, characterized in that: The longitudinal rod comprises a limiting finger, the limiting finger is arranged at the first end of the longitudinal rod, and the limiting finger limits the angle of the longitudinal rod pivoting downward relative to the connecting rod by abutting against the connecting rod; And / or, the longitudinal rod comprises a limiting protrusion, the limiting protrusion is arranged at the first end of the longitudinal rod, and the limiting protrusion limits the upward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

22. The card holder assembly according to claim 18, characterized in that: The support frame further comprises a limiting member, a first end of which is slidably connected to the longitudinal rod, and a second end of which is pivotally connected to the connecting rod.

23. The card holder assembly according to claim 1, characterized in that: The card holder assembly further includes a retaining mechanism, which is used to retain the locking member in the first unlocking position, and the retaining mechanism includes: a touch button disposed on the seat plate assembly; the touch button being movable in a vertical direction relative to the seat plate assembly to allow at least a portion of the touch button to protrude upward relative to the seat plate assembly; a buckle portion connected to the touch button; and a reset member, disposed between the touch button and the seat plate assembly, and used to drive the touch button to move upward so that the touch button protrudes upward relative to the seat plate assembly; Wherein, when the object is placed on the seat plate assembly, the touch button is pressed downward by the object, and the buckle portion moves downward with the touch button; when the locking member moves from the first locking position to the first unlocking position, the retaining hook of the locking member hooks the buckle portion, and the locking member is retained in the first unlocking position.

24. The card holder assembly according to claim 23, characterized in that: The buckle portion can move in a vertical direction relative to the touch button; The retaining mechanism further includes an elastic member, which is disposed between the touch button and the buckle portion and is used to drive the buckle portion to move downward relative to the touch button.

25. The card holder assembly according to claim 1, characterized in that: The card seat assembly comprises at least one card channel, and the at least one card channel is used to card at least one card member of the object; When the locking member is in the first locking position, the locking member extends into the corresponding engaging channel to lock the corresponding engaging member; When the locking element is at the first unlocking position, the locking element retracts relative to the engaging channel to allow the engaging element to be removed from the engaging channel.

26. The card holder assembly according to claim 25, characterized in that: The card holder assembly further includes a retaining mechanism, which is used to retain the locking member in the first unlocking position.

27. The card holder assembly according to claim 26, characterized in that: The holding mechanism comprises: A movable member is installed in a slideway communicated with the engaging channel; the movable member has an abutting end adapted to extend into the engaging channel and a engaging end away from the abutting end; a reset device, used for driving the abutment end to extend into the engagement channel; and When the engaging channel is engaged with the engaging member, the abutting end is pressed by the engaging member and withdraws from the engaging channel; when the locking member moves to the first unlocking position, the engaging end is engaged with the locking member to lock the locking member at the first unlocking position.

28. The card holder assembly according to claim 27, characterized in that: The clamping end is provided with a first clamping portion, and the locking member is provided with a second clamping portion; wherein, when the clamping member is clamped into the clamping channel, the first clamping portion moves to the moving path of the second clamping portion; when the locking member moves to the first unlocking position, the second clamping portion is clamped with the first clamping portion.

29. The card holder assembly according to claim 28, characterized in that: The locking member is provided with an elastic arm, and the second buckle portion is provided on the elastic arm; and / or, one of the first buckle portion and the second buckle portion is a buckle groove, and the other is a wedge-shaped step.

30. The card holder assembly according to claim 29, characterized in that: The locking member is integrally formed with the elastic arm; Alternatively, the elastic arm is fixed to the locking member via a fastener, and a rotation-stopping structure is provided between the elastic arm and the locking member.

31. The card holder assembly according to claim 27, characterized in that: The resetting device also includes a cable, a first resetting member and a sliding member, wherein the cable is connected between the movable member and the sliding member; the first resetting member abuts against the sliding member to drive the sliding member to reset, and when the sliding member is reset, the cable drives the abutting end to extend into the engaging channel.

32. The card holder assembly according to claim 31, characterized in that: The sliding member has a snap-on indication area, and the snap-on indication area is used to indicate the position of the movable member; the sliding member is installed in a hollow rod, and the rod is provided with an observation hole for observing the snap-on indication area.

33. The card holder assembly according to claim 31, characterized in that: The movable member has a connecting portion located outside the slideway, and the cable is supported by a guide frame located outside the slideway and connected to the connecting portion; The moving direction of the cable between the connecting portion and the guide frame is parallel to the slideway.

34. The card holder assembly according to claim 27, characterized in that: The locking member is provided with a matching portion, and the movable member has a limiting portion located outside the slideway; When the engaging member moves out of the engaging channel, the resetting device drives the movable member to move, so that the limiting portion moves to the moving path of the locking member and abuts against the matching portion, thereby keeping the locking member in the first unlocking position; when the engaging channel is engaged with the engaging member, the limiting portion moves out of the moving path of the locking member to allow the locking member to move to the first locking position.

35. The card holder assembly according to claim 1, characterized in that: The card holder assembly is used to be installed on the vehicle frame; At least one unlocking operation member is mounted on the frame, and the at least one unlocking operation member is operably connected to the at least one locking member, and the at least one unlocking operation member is used to drive the at least one locking member to move toward the first unlocking position.

36. The card holder assembly according to claim 35, characterized in that: The at least one unlocking operation member has a unlocking identification area, and the unlocking identification area is used to indicate that the at least one locking member is in the first locking position or the first unlocking position.

37. The card holder assembly according to claim 35, characterized in that: The frame includes at least one wheel seat for mounting a front wheel or a rear wheel, and the at least one unlocking operating member is slidably matched with the at least one wheel seat; the unlocking operating member is connected to the at least one locking member via at least one traction rope.

38. The card holder assembly according to claim 37, characterized in that: The frame is provided with at least one guiding mechanism for guiding the at least one traction rope, and the at least one guiding mechanism includes at least one rotating member arranged near the at least one release operating member.

39. The card holder assembly according to claim 37, characterized in that: The unlocking operation member has a first driving inclined surface, which is inclined relative to the sliding direction of the unlocking operation member; the end of the traction rope abuts against the first driving inclined surface so as to be able to slide along the first driving inclined surface.

40. The card holder assembly according to claim 39, characterized in that: The unlocking operating member comprises a first limiting wall, and a first clamping structure is formed between the first limiting wall and the first driving inclined surface; A second limiting wall is disposed in the wheel seat, and a second clamping structure is formed on the second limiting wall; and The first driving inclined surface is between the first limiting wall and the second limiting wall, and the end of the traction rope is suitable for engaging with the first clamping structure or the second clamping structure.

41. The card holder assembly according to claim 39, characterized in that: A first guiding inclined surface is arranged in the wheel seat, and the first guiding inclined surface forms an included angle with the first driving inclined surface. The end of the traction rope abuts against the first driving inclined surface and the first guiding inclined surface within the range of the included angle.

42. The card holder assembly according to claim 35, characterized in that: The locking mechanism comprises at least two locking members, the at least two locking members are connected by a linkage device, and the linkage device allows the at least two locking members to move synchronously to the first unlocking position; The frame is provided with a lock release state synchronization mechanism and at least two lock release operating members, the at least two lock release operating members are respectively connected to the at least two locking members, and the lock release state synchronization mechanism allows the at least two lock release operating members to be in a state of releasing the at least two locking members at the same time.

43. The card holder assembly according to claim 42, characterized in that: The at least two unlocking operating members are respectively connected to the at least two locking members through at least two traction ropes; the frame includes at least two wheel seats for mounting the front wheels or the rear wheels, and the at least two unlocking operating members can be slidably mounted to the at least two wheel seats.

44. The card holder assembly according to claim 43, characterized in that: The at least two release operating members each have a first driving inclined surface, and the first driving inclined surface is inclined relative to the sliding direction of the release operating member; the at least two release operating members are respectively in contact with the ends of the at least two traction ropes through the first driving inclined surface; The unlocking state synchronization mechanism includes at least two second reset members, each of which abuts against the corresponding end of the traction rope to drive the end of the traction rope to leave the first driving inclined surface to allow the corresponding unlocking operating member to slide downward.

45. The card holder assembly according to claim 1, characterized in that: The seat plate assembly includes a first seat plate assembly and a second seat plate assembly; The locking mechanism comprises a first locking mechanism and a second locking mechanism, the first locking mechanism is arranged on the first seat plate assembly, the second locking mechanism is arranged on the second seat plate assembly, and the first locking mechanism and the second locking mechanism both comprise the at least one locking member; The first seat plate assembly and the second seat plate assembly can rotate relative to each other about a rotation axis, so that the card seat assembly has an unfolded state and a folded state; as well as When the base assembly is in the unfolded state, the base assembly is suitable for supporting the object, and the at least one locking member is suitable for locking the object.

46. ​​The card holder assembly according to claim 45, characterized in that: The seat plate assembly is mounted on a foldable connecting component, the connecting component includes the rotation axis, the unfolded state of the connecting component corresponds to the unfolded state of the card seat assembly, and the folded state of the connecting component corresponds to the folded state of the card seat assembly.

47. The card holder assembly according to claim 46, characterized in that: The connection component comprises: a first connecting member, the first seat plate assembly being mounted to the first connecting member; an auxiliary support member to which the second seat plate assembly is mounted; and The first connecting member and the auxiliary supporting member are pivotally connected via a pivot, and a center line of the pivot forms the rotation axis.

48. The card holder assembly according to claim 47, characterized in that: The first connecting member includes two first pipes arranged in parallel, and the auxiliary supporting member includes two second pipes arranged in parallel, and each of the first pipes is pivotally connected to the adjacent second pipe through the pivot; The first seat plate assembly is connected between the two first pipes and extends along a first direction, and the second seat plate assembly is connected between the two second pipes and extends along the first direction; as well as When the connecting assembly is in the unfolded state, the first seat plate assembly and the second seat plate assembly are spaced apart in a second direction, and the first direction and the second direction are not parallel.

49. The card holder assembly according to claim 48, characterized in that: When the connecting assembly is in the unfolded state, the angle between the adjacent first tubes and the second tubes is 180 degrees; and when the connecting assembly is in the folded state, the angle between the adjacent first tubes and the second tubes is an acute angle; And / or, the first seat plate assembly is close to the pivot, and the second seat plate assembly is far away from the pivot, and when the connecting component is in a folded state, the positions of the first seat plate assembly and the second seat plate assembly are staggered.

50. The card holder assembly according to claim 48, characterized in that: Sleeves are arranged at both ends of the first seat plate assembly, each of the sleeves is sleeved on the corresponding first pipe, and the pivot is passed through the sleeve.

51. The card holder assembly according to claim 45, characterized in that: The first seat plate assembly has at least one first engaging channel, each of which extends in the second direction; the first locking mechanism has at least one first locking member, each of which moves in the first direction to switch to the first locking position or the first unlocking position; In the first locking position, the first locking member extends into the corresponding first engaging channel; in the first unlocking position, the first locking member retracts from the corresponding first engaging channel; The second seat plate assembly has at least one second engaging channel, and each of the second engaging channels extends in the second direction; The second locking mechanism has at least one second locking member, and each of the second locking members moves in the first direction to switch to the first locking position or the first unlocking position; In the first locking position, the second locking member extends into the corresponding second engaging channel; At the first unlocking position, the second locking member retracts from the corresponding second engaging channel; The first direction and the second direction are not parallel.

52. The card holder assembly according to claim 51, characterized in that: The first locking mechanism comprises two first locking members, the two first locking members are connected by a first linkage assembly, and the first linkage assembly controls the two first locking members to move synchronously so that the two first locking members are synchronously switched between the first locking position and the first unlocking position; and / or, The second locking mechanism includes two second locking members, and the two second locking members are connected by a second linkage assembly. The second linkage assembly controls the two second locking members to move synchronously so that the two second locking members can switch synchronously between the first locking position and the first unlocking position.

53. The card holder assembly according to claim 51, characterized in that: The at least one first locking member is connected to the at least one second locking member via at least one linkage member, and the first locking member and the second locking member connected to the same linkage member are synchronously switched between the first locking position and the first unlocking position; as well as The first locking member and the second locking member connected to the same linkage member move in opposite directions.

54. The card holder assembly according to claim 51, characterized in that: The first seat plate assembly is connected to a first pivot seat, the second seat plate assembly is connected to a second pivot seat, the first pivot seat and the second pivot seat are pivotally connected to form the rotation axis; and The moving direction of the first locking member, the moving direction of the second locking member, and the rotation axis are parallel to each other.

55. The card holder assembly according to claim 54, characterized in that: The first seat plate assembly is mounted to the first support frame, and the first support frame is connected to the first pivot seat; the second seat plate assembly is mounted to the second support frame, and the second support frame is connected to the second pivot seat; The first pivot seat and the second pivot seat are connected to a mounting seat, and the mounting seat is used to be detachably connected to the vehicle frame.

56. A wheeled mobile device, characterized in that: The utility model comprises a vehicle frame and a card seat assembly as claimed in any one of claims 1 to 55.

57. The wheeled mobile device according to claim 56, characterized in that: The frame is provided with a storage rack, the storage rack has at least one accommodating cavity, the mouth of the at least one accommodating cavity is provided with at least one clamping portion, and the clamping portion is made of elastic material.

58. A wheeled mobile device, characterized in that: Including frame and connection components; The frame comprises: a front support rod, on which a front wheel is mounted; a rear support rod, on which a rear wheel is mounted; an upper support rod, connected to an armrest; an upper end of the front support rod, an upper end of the rear support rod and a lower end of the upper support rod are pivotally connected via a pivoting portion; The connecting assembly is pivotally connected to the frame, and the connecting assembly is folded along with the folding of the frame. A card holder assembly is mounted on the connecting assembly, and the card holder assembly includes: A seat plate assembly for placing the vehicle thereon; and The locking mechanism comprises at least one locking member, wherein the at least one locking member is arranged on the seat plate assembly and can slide between a first locking position and a first unlocking position, wherein when the locking member is in the first locking position, the locking member can lock the carrier, and when the locking member is in the first unlocking position, the locking member can release the carrier.

59. The wheeled mobile device according to claim 58, characterized in that The connection component comprises: a first connecting member, wherein a front end of the first connecting member is pivotally connected to a first pivot point of the front support rod; an auxiliary support member, a front end of the auxiliary support member being pivotally connected to the second pivot point of the first connecting member, and the auxiliary support member being pivotally connected to the third pivot point of the rear support rod; A linking member, wherein the upper end of the linking member is pivotally connected to the fourth pivot point of the upper support rod, and the lower end of the linking member is pivotally connected to the fifth pivot point of the auxiliary support member; When the frame is in an expanded state, the first connecting member and the auxiliary support member are expanded, and the second pivot point is located between the first pivot point and the third pivot point, and the fifth pivot point is located between the second pivot point and the third pivot point; when the frame is in a folded state, the first connecting member and the auxiliary support member are folded.

60. The wheeled mobile device according to claim 59, characterized in that: When the frame is unfolded, the first connecting member and the auxiliary supporting member are arranged horizontally, and the second pivot point, the third pivot point and the fifth pivot point are in a straight line.

61. The wheeled mobile device according to claim 59, characterized in that: The connection assembly also includes a seat plate support, which is connected to the auxiliary support and can move synchronously with the auxiliary support. The seat plate support is used to install a card seat assembly, and the card seat assembly is used to engage with the carrier.

62. The wheeled mobile device according to claim 61, characterized in that: The seat plate support member is arranged on the inner side of the auxiliary support member, and the rear end of the first connecting member is located between the seat plate support member and the auxiliary support member; And / or, the base assembly is mounted on the seat plate support, and the base assembly includes a plurality of engaging points.

63. The wheeled mobile device according to claim 59, characterized in that: A clamping seat assembly is installed on the auxiliary support member, and the clamping seat assembly includes a plurality of clamping points.

64. The wheeled mobile device according to claim 59, characterized in that: The linkage has an S-shaped structure, and the S-shaped structure has a first section, a second section and a third section in sequence.

65. The wheeled mobile device according to claim 58, characterized in that: A card seat assembly is installed on the connecting assembly, and the card seat assembly includes a seat plate assembly, and the seat plate assembly is used to place and support the carrier; the seat plate assembly has a first extension portion and / or a second extension portion, the first extension portion extends backward from the seat plate assembly, and the second extension portion extends forward from the seat plate assembly.

66. The wheeled mobile device according to claim 58, characterized in that: A card seat assembly is installed on the connecting assembly, and the card seat assembly includes a plurality of engaging points; when the frame is folded, the front support rod, the rear support rod and the upper support rod are close to each other, and the connecting assembly drives the card seat assembly to pivot, so that the front end of the card seat assembly pivots downward and the rear end of the card seat assembly pivots upward.

67. A wheeled mobile device, characterized in that: include: The frame comprises: a front support rod, on which a front wheel is mounted; a rear support rod, on which a rear wheel is mounted; an upper support rod, connected to an armrest; an upper end of the front support rod, an upper end of the rear support rod and a lower end of the upper support rod are pivotally connected via a pivoting portion; and A card seat assembly, mounted on the frame and used to support and lock the carrier; When the frame is unfolded, the center of gravity of the card seat assembly is offset toward the rear wheel relative to the pivot portion. Wherein, the card holder assembly comprises: A seat plate assembly for placing the vehicle thereon; and The locking mechanism comprises at least one locking member, wherein the at least one locking member is arranged on the seat plate assembly and can slide between a locking position and a releasing position. When the locking member is in the locking position, the locking member can lock the carrier, and when the locking member is in the releasing position, the locking member can release the carrier.

68. The wheeled mobile device according to claim 67, characterized in that: When the frame is in the unfolded state, the center of gravity of the card seat assembly is close to or located at the plane formed by the rear support rods.

69. The wheeled mobile device according to claim 67, characterized in that: When the frame is in the unfolded state, the holder assembly is lower than the pivoting portion.

70. A wheeled mobile device, characterized in that: include: Frame; A card seat assembly is mounted on the vehicle frame and extends in the left-right direction; the card seat assembly includes a seat plate assembly and a locking mechanism, the seat plate assembly is used to place the vehicle thereon, the locking mechanism includes at least one locking member, the at least one locking member is arranged on the seat plate assembly and can slide between a locking position and a release position, when the locking member is in the locking position, the locking member can lock the vehicle, and when the locking member is in the release position, the locking member can release the vehicle; Wherein, the frame includes a first cross bar and / or a second cross bar extending in the left-right direction; the first cross bar is located at a predetermined distance in front of the base assembly, and the first cross bar and the base assembly cooperate to support the vehicle; the second cross bar is located at a predetermined distance behind the base assembly, and the second cross bar cooperates with the base assembly to support the vehicle.

71. The wheeled mobile device according to claim 70, characterized in that: The frame comprises: a front support rod, on which a front wheel is mounted; a rear support rod, on which a rear wheel is mounted; a connecting assembly, respectively connected to the front support rod and the rear support rod; the card seat assembly is mounted on the connecting assembly; the front support rod comprises the first cross bar, and / or the connecting assembly comprises the second cross bar; And / or, the position of the second cross bar in the front-rear direction is adjustable.

72. The wheeled mobile device according to claim 71, characterized in that: The front support rod is pivotally connected to the rear support rod, and the frame can be folded; The connecting assembly includes a first connecting member and an auxiliary supporting member, wherein the first connecting member is pivotally connected to a first pivot point of the front supporting rod, the second pivot point of the first connecting member is pivotally connected to the auxiliary supporting member, and the auxiliary supporting member is pivotally connected to a third pivot point of the rear supporting rod; When the frame is in an expanded state, the first connecting member and the auxiliary supporting member are expanded, and the second pivot point is located between the first pivot point and the third pivot point; when the frame is in a folded state, the first connecting member and the auxiliary supporting member are folded; The card seat assembly is connected to the first connecting member or the auxiliary supporting member; The auxiliary support member includes the second crossbar.

73. The wheeled mobile device according to claim 72, characterized in that: The card seat assembly has a sleeve for being sleeved with the first connecting member or the auxiliary supporting member, and the pivot axis of the second pivot point passes through the sleeve.

74. The wheeled mobile device according to claim 72, characterized in that: The frame also includes an upper support rod, the lower end of which is pivotally connected to the upper end of the front support rod and the upper end of the rear support rod, and the upper end of the upper support rod is connected to the armrest; the connecting assembly also includes a linking member, the upper end of which is connected to the upper support rod, and the lower end of which is connected to the auxiliary support member.

75. The wheeled mobile device according to claim 70, characterized in that: The first cross bar is provided with a first groove or a first positioning protrusion; and / or, the second cross bar is provided with a second groove or a second positioning protrusion; and / or, the card seat assembly is provided with a third groove or a third positioning protrusion.

76. The wheeled mobility device according to claim 70, characterized in that: The first cross bar is provided with a first abutting member for abutting against the carrier; and / or the second cross bar is provided with a second abutting member for abutting against the carrier.

77. The wheeled mobility device according to claim 70, characterized in that: The card seat assembly includes at least one card channel extending in the front-to-back direction, and the at least one card channel is arranged in a row in the left-to-right direction at intervals from each other; The at least one locking member can slide in the left-right direction. In the locking position, the at least one locking member extends into the at least one engaging channel to lock the carrier. In the unlocking position, the at least one locking member retracts from the at least one engaging channel to release the carrier.

78. The wheeled mobility device according to claim 70, characterized in that: The frame comprises at least one wheel seat for mounting a front wheel or a rear wheel, and at least one unlocking operating member is slidably matched with the at least one wheel seat; The at least one unlocking operation member is connected to the at least one locking member via at least one traction rope to drive the at least one locking member to move to the unlocking position; The at least one unlocking operation member has a unlocking identification area, and the unlocking identification area is used to indicate that the at least one locking member is in the locking position or the unlocking position.

79. The wheeled mobile device according to claim 70, characterized in that: The card holder assembly further comprises at least one retaining mechanism, and when the at least one locking member is driven to the unlocking position, the at least one retaining mechanism is used to lock the at least one locking member at the unlocking position.

80. A wheeled mobile device, characterized in that: include: Frame; A card holder assembly is mounted on the vehicle frame and is used to card a carrier; the card holder assembly includes at least one locking member, the at least one locking member has a locking position for locking the carrier and a releasing position for releasing the carrier, the at least one locking member can slide between the locking position and the releasing position, when the locking member is in the locking position, the locking member can lock an object, and when the locking member is in the releasing position, the locking member can release the object; and An indicating device is installed on the frame and / or the base assembly, and is used to indicate the working status of the wheeled mobile device; the working status includes whether the base assembly is engaged with the vehicle, and / or whether the at least one locking member locks the vehicle.

81. The wheeled mobile device according to claim 80, characterized in that: The card seat assembly includes at least one card channel, and the at least one card channel is used to card with the card member of the carrier; The indicating device comprises a first indicating device, which comprises: a movable part installed in a slideway communicating with the engaging channel; the movable part has an abutting end suitable for extending into the engaging channel; a sliding part operably connected to the movable part and having an engaging indicating area; when the engaging part is engaged in the engaging channel, the abutting end is pressed by the engaging part and withdraws from the engaging channel, so that the movable part drives the sliding part to slide, so as to change the position of the engaging indicating area.

82. The wheeled mobile device according to claim 81, characterized in that: The frame includes a hollow rod, the sliding member can slide in the rod, the rod is provided with an observation hole for observing the clamping indication area, and the sliding member is connected to the movable member through a cable; The first indicating device further comprises a first restoring member, the first restoring member abuts against the sliding member and is used to drive the sliding member to reset, so that the cable drives the abutting end to extend into the engaging channel.

83. The wheeled mobile device according to claim 80, characterized in that: The indicating device includes a second indicating device, which includes at least one unlocking operation member, the at least one unlocking operation member is operably connected to the at least one locking member, and the at least one unlocking operation member has a unlocking identification area, and the unlocking identification area is used to indicate the position of the at least one locking member.

84. A wheeled mobile device, characterized in that: include: A frame including at least two wheel seats for mounting front wheels or rear wheels; The card seat assembly comprises: a seat plate assembly, used to place a carrier thereon; a locking mechanism, comprising at least two locking members; the at least two locking members are arranged on the seat plate assembly and can slide between a locking position and a release position; when the locking members are in the locking position, the locking members can lock the carrier; when the locking members are in the release position, the locking members can release the carrier; a linkage device, connected to the at least two locking members, so as to allow the at least two locking members to move synchronously to the release position; At least two unlocking operating members are slidably mounted on the at least two wheel seats respectively; the at least two unlocking operating members are connected to the at least two locking members respectively through at least two traction ropes; The unlocking state synchronization mechanism allows the at least two unlocking operating members to be in a state of unlocking the locking member at the same time.

85. The wheeled mobile device according to claim 84, characterized in that: The at least two locking members are connected via a linkage device, and when any of the locking members is subjected to force and moves toward the unlocking position, the linkage device drives the other locking members to move toward the unlocking position synchronously; The at least two release operating members each have a first driving inclined surface, and the at least two release operating members are operably connected to the ends of the at least two traction ropes through the first driving inclined surfaces; The unlocked state synchronization mechanism includes at least two second reset members, each of which abuts against the corresponding end of the traction rope to push the end of the traction rope away from the first driving inclined surface.

86. A support frame for supporting a seat plate assembly of a card seat assembly, characterized in that: The support frame includes longitudinal rods, connecting rods and shock-absorbing rods connected into a triangular structure; The longitudinal rod is suitable for being arranged under the seat plate assembly and fixedly connected to the seat plate assembly; the first end of the connecting rod is connected to the first end of the longitudinal rod, and the second end of the connecting rod is connected to the first end of the shock absorbing rod; the second end of the shock absorbing rod is connected to the longitudinal rod; the shock absorbing rod is elastic to provide buffer support to the seat plate assembly, Wherein, the seat plate assembly is used to place objects thereon. The card seat assembly also includes: a locking mechanism, including at least one locking member; the at least one locking member is arranged on the seat plate assembly and can slide between a first locking position and a first unlocking position; when the locking member is in the first locking position, the locking member can lock the object; when the locking member is in the first unlocking position, the locking member can release the object.

87. The support frame according to claim 86, characterized in that The support frame also includes a first connecting component and a second connecting component, the first end of the first connecting component and the first end of the second connecting component are respectively pivotally connected to the second end of the connecting rod, and the second end of the first connecting component, the second end of the second connecting component and the first end of the connecting rod are respectively pivotally connected to different rods of the frame that can be folded relative to each other.

88. The support frame according to claim 86, characterized in that The longitudinal rod comprises a limit finger, which is arranged at a first end of the longitudinal rod, and the limit finger limits the angle of the longitudinal rod pivoting downward relative to the connecting rod by abutting against the connecting rod; And / or, the longitudinal rod comprises a limiting protrusion, the limiting protrusion is arranged at the first end of the longitudinal rod, and the limiting protrusion limits the upward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

89. The support frame according to claim 86, characterized in that The support frame further comprises a limiting member, a first end of which is slidably connected to the longitudinal rod, and a second end of which is pivotally connected to the connecting rod.

90. A locking mechanism, characterized in that: include: Two first locking members, the two first locking members move in opposite directions to move to a locking position or a releasing position; A linkage assembly comprises a fixed connection point between the two first locking members, and two pivots on both sides of the fixed connection point, wherein the linkage assembly is pivotally connected to the two first locking members via the two pivots; the linkage assembly is configured such that when any of the first locking members moves, the two pivots are caused to move in opposite directions, so that the two first locking members move synchronously in opposite directions.

91. The locking mechanism of claim 90, wherein: The linkage assembly includes a first link, a second link, a third link and a fourth link, wherein the first link, the second link, the third link and the fourth link are connected in pairs to form four connection points, one of the four connection points is the fixed connection point, and the connection point opposite to the fixed connection point among the four connection points is the central connection point, and two links among the first link, the second link, the third link and the fourth link that are connected to the central connection point are respectively connected to the two first locking members; the line connecting the fixed connection point and the central connection point is perpendicular to the moving direction of the two first locking members.

92. The locking mechanism of claim 90, wherein: The locking mechanism further comprises two second locking members, wherein the two second locking members are parallel to the two first locking members; the first locking member and the second locking member located on the diagonal line of the two first locking members and the two second locking members are connected via a linkage member.

93. The locking mechanism of claim 92, wherein: The linkage member is a connecting rod, the two first locking members and the two second locking members are connected through the two connecting rods, and the two connecting rods are pivotally connected at the intersection of the two connecting rods.

94. A retaining mechanism, characterized in that: The retaining mechanism is used to retain a locking member that can slide between a locking position and a releasing position at the releasing position, wherein the locking member is mounted on the seat plate assembly; the retaining mechanism comprises: A movable member is installed in the slideway of the seat plate assembly, the movable member has an abutting end and a clamping end away from the abutting end; the abutting end can be pressed by a carrier placed on the seat plate assembly, and the locking member is used to lock the carrier; A reset device, used for driving the abutting end to move in a direction away from the clamping end; When the carrier is locked by the locking member, the abutting end is pressed by the carrier and moves toward the clamping end; when the locking member moves to the unlocking position, the clamping end engages with the locking member, thereby locking the locking member at the unlocking position.

95. The retaining mechanism according to claim 94, characterized in that: The locking member is provided with a matching portion, and the movable member has a limiting portion located outside the slideway; When the carrier releases the pressure on the movable member, the reset device drives the movable member to move, so that the limiting portion moves to the moving path of the locking member and abuts against the matching portion, thereby keeping the locking member in the unlocking position.

96. The retaining mechanism according to claim 95, characterized in that: When the carrier presses the abutting end of the movable member downward, the limiting portion moves out of the moving path of the locking member to allow the locking member to move to the locking position.

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