Wheel type moving device and supporting frame for supporting seat plate assembly

Abstract

The utility model relates to a wheel type moving device and a supporting frame used for supporting a seat plate assembly. The wheel type moving device comprises a frame; the clamping seat assembly is mounted on the frame and is used for clamping a carrier; the clamping seat assembly comprises at least one locking piece, and the at least one locking piece is provided with a locking position for locking the carrier and an unlocking position for unlocking the carrier; the indicating device is mounted on the frame and / or the clamping seat assembly and is used for indicating the working state of the wheel type moving device; the working state comprises whether the clamping seat assembly is clamped with the carrier or not and / or whether the at least one locking piece locks the carrier or not.

Description

[0001] This application is a divisional application of Chinese utility model patent application filed on November 8, 2023, with application number 2023230182751 and utility model title "card holder assembly, wheeled moving device, support frame, locking mechanism and retaining mechanism". Technical Field

[0002] This utility model relates to a wheeled mobile device and a support frame for supporting a seat plate assembly. Background Technology

[0003] Typically, when traveling with infants or animals, users can use strollers to move them. However, these strollers cannot be placed directly in the vehicle in their unfolded state; they must be folded and stored in the vehicle (e.g., the trunk). This requires another vehicle to carry the infant or animal, meaning users need to prepare at least two different vehicles, which is quite inconvenient. Furthermore, due to the complex seat structure of strollers, even when folded, they take up considerable interior space.

[0004] In addition, although users can use hand-held vehicles to carry infants or animals, it may be tiring to carry the vehicle for a long time. Even if the vehicle is placed on a mobile device, it may not be able to be stably fixed to the mobile device, and may tilt or even fall off the mobile device when encountering bumpy roads or slopes, thus posing a significant safety risk. Utility Model Content

[0005] In one aspect, the present invention provides a card holder assembly, comprising: a seat assembly for placing an object thereon; a locking mechanism including at least one locking member; the at least one locking member being disposed on the seat assembly and slidable between a first locking position and a first unlocking position; when the locking member is in the first locking position, the locking member is capable of locking the object; when the locking member is in the first unlocking position, the locking member is capable of unlocking the object.

[0006] Furthermore, the locking mechanism is mounted on the base plate assembly, and the locking mechanism also includes at least one release operation member, which is connected to the locking member. The release operation member can slide between a second locked position and a second release position; wherein, when the release operation member is in the second locked position, the locking member is in the first locked position; when the release operation member is operated to move from the second locked position to the second release position, the locking member moves to the first release position along with the movement of the release operation member.

[0007] Furthermore, the release operation member and / or the locking member are provided with a second driving ramp, and the release operation member and the locking member are operably connected through the second driving ramp, such that the moving direction of the release operation member is perpendicular to the moving direction of the locking member.

[0008] Furthermore, the locking member is provided with an extension portion, the extension portion is provided with an oblique hole, and the second driving oblique surface is provided on the hole wall of the oblique hole; the unlocking operation member is equipped with a driving pin that slides with the oblique hole.

[0009] Furthermore, the locking mechanism includes two first locking members connected by a linkage device. When either first locking member 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.

[0010] Furthermore, the two first locking members are disposed on the same side of the seat assembly; the two first locking members move in the same direction to switch to the first locked position or the first unlocked position; or, the two first locking members move in opposite directions to switch to the first locked position or the first unlocked position; the card holder assembly further includes at least one elastic device that applies a force to the first locking member to move toward the first locked position.

[0011] Furthermore, the linkage device includes a linkage component connected between the two first locking members. When either of the first locking members is subjected to force and moves between the first unlocking position and the first locking position, the linkage component drives the other first locking member to move synchronously between the first unlocking position and the first locking position.

[0012] Furthermore, the linkage component 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 component is pivotally connected to the two first locking members through the two pivots. When either of the first locking members moves, it causes the two pivots to move in opposite directions, so that the two first locking members move synchronously in opposite directions.

[0013] Furthermore, the linkage component 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, which is fixed to the seat plate assembly. The connection point opposite to the fixed connection point is the center connection point. The two links of the first link, the second link, the third link, and the fourth link that are connected to the center connection point are respectively connected to the two first locking members. The line connecting the fixed connection point and the center connection point is perpendicular to the moving direction of the two first locking members.

[0014] Furthermore, the locking mechanism includes two second locking members, which are disposed on the other side of the seat assembly and parallel to the two first locking members, and the two second locking members have corresponding configurations to the two first locking members.

[0015] Furthermore, the locking mechanism includes two second locking members, which are disposed on the other side of the seat assembly and parallel to the two first locking members; the two first locking members and the two second locking members are connected by the linkage device, which allows the two first locking members and the two second locking members to move synchronously to the first unlocking position.

[0016] Furthermore, the locking mechanism includes at least one first locking member and at least one second locking member, wherein the movement direction of the at least one first locking member is parallel to the movement direction of the at least one second locking member; wherein, the first locking member and the second locking member located diagonally among the at least one first locking member and the at least one second locking member are connected by a linkage device, the linkage device allowing the connected first locking member and the second locking member to move in opposite directions and synchronously switch to the first unlocking position.

[0017] Furthermore, the linkage device includes a linkage component, which is a connecting rod or a traction component, and the first locking component and the second locking component located diagonally are connected through the linkage component; and / or, the card holder assembly further includes at least one elastic device, which applies a force to the first locking component and / or the second locking component to move towards the first locking position.

[0018] Furthermore, the locking mechanism includes two first locking elements and two second locking elements, which are connected by two linkage elements.

[0019] Furthermore, the two linkages are connecting rods, and the two linkages are arranged in a cross configuration.

[0020] Furthermore, the two linkages are pivotally connected at their intersection; and / or, the connection points of the two linkages and the two second locking members define an included angle relative to the intersection of the two linkages, and the angle decreases as the locking member moves from the first locking position to the first unlocking position.

[0021] Furthermore, the card holder assembly also includes two support frames for supporting the seat plate assembly; the two support frames are respectively disposed on the left and right sides of the seat plate assembly, and each support frame includes a longitudinal rod, a connecting rod and a shock-absorbing rod connected in a triangular structure.

[0022] Furthermore, the longitudinal rod is disposed below the seat assembly and fixedly connected to the seat 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 absorber; the second end of the shock absorber is connected to the longitudinal rod; the shock absorber is elastic to provide cushioning support to the seat assembly.

[0023] Furthermore, the card holder assembly is used for mounting to a foldable frame; each of the support frames further includes a first connecting member and a second connecting member, the first end of the first connecting member and the first end of the second connecting member being pivotally connected to the second end of the connecting rod, and the second end of the first connecting member, the second end of the second connecting member and the first end of the connecting rod being pivotally connected to different rods of the frame that can be folded relative to each other.

[0024] Furthermore, 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.

[0025] Furthermore, the longitudinal rod includes a limiting finger disposed at a first end of the longitudinal rod, the limiting finger limiting the downward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod; and / or, the longitudinal rod includes a limiting protrusion disposed at a first end of the longitudinal rod, the limiting protrusion limiting the upward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

[0026] Furthermore, the support frame also includes a limiting member, the first end of which is slidably connected to the longitudinal rod, and the second end of which is pivotally connected to the connecting rod.

[0027] Furthermore, the card holder assembly also includes a retaining mechanism for holding the locking member in the first unlocking position. The retaining mechanism includes: a touch button disposed on the seat assembly; the touch button is movable vertically relative to the seat assembly to allow at least a portion of the touch button to protrude upward relative to the seat assembly; a latching portion connected to the touch button; and a reset member disposed between the touch button and the seat assembly for driving the touch button to move upward so that the touch button protrudes upward relative to the seat assembly. When the object is placed on the seat assembly, the touch button is pressed downward by the object, and the latching 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 engages the latching portion, and the locking member is held in the first unlocking position.

[0028] Furthermore, the latching part is capable of moving vertically relative to the touch button; the retaining mechanism also includes an elastic element disposed between the touch button and the latching part, for driving the latching part to move downward relative to the touch button.

[0029] Furthermore, the card holder assembly includes at least one engagement channel for engaging at least one engagement member of the object; when the locking member is in the first locked position, the locking member extends into the corresponding engagement channel to lock the corresponding engagement member; when the locking member is in the first unlocked position, the locking member retracts relative to the engagement channel to allow the engagement member to be removed from the engagement channel.

[0030] Furthermore, the card holder assembly also includes a retaining mechanism for holding the locking member in the first unlocked position.

[0031] Further, the retaining mechanism includes: a movable member installed in a slide communicating with the engagement channel; the movable member having an abutment end adapted to extend into the engagement channel and a locking end away from the abutment end; a reset device for driving the abutment end to extend into the engagement channel; and when the engagement channel engages with the engagement member, the abutment end is pressed out of the engagement channel by the engagement member; when the locking member moves to the first unlocking position, the locking end engages with the locking member, locking the locking member in the first unlocking position.

[0032] Furthermore, the latching end is provided with a first latching part, and the locking member is provided with a second latching part; wherein, when the engaging member is engaged in the engaging channel, the first latching part moves to the moving path of the second latching part; when the locking member moves to the first unlocking position, the second latching part engages with the first latching part.

[0033] Furthermore, the locking member is provided with an elastic arm, and the second latching part is disposed on the elastic arm; and / or, one of the first latching part and the second latching part is a slot, and the other is a wedge-shaped step.

[0034] Furthermore, the locking member is integrally formed with the elastic arm; or, the elastic arm is fixed to the locking member by fasteners, and an anti-rotation structure is provided between the elastic arm and the locking member.

[0035] Furthermore, the reset device also includes a cable, a first reset member, and a sliding member. The cable is connected between the movable member and the sliding member. The first reset member abuts against the sliding member to drive the sliding member to reset. When the sliding member is reset, the cable drives the abutting end to extend into the engagement channel.

[0036] Furthermore, the slider has a snap-in indicator area, which is used to indicate the position of the movable part; the slider is installed in a hollow rod, and the rod is provided with an observation hole for observing the snap-in indicator area.

[0037] Furthermore, the movable component has a connecting portion located outside the slide rail, and the cable is supported by a guide frame located outside the slide rail 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 rail.

[0038] Furthermore, the locking member has a mating portion, and the movable member has a limiting portion located outside the slide rail; when the engaging member moves out of the engaging channel, the reset device drives the movable member to move, causing the limiting portion to move onto the moving path of the locking member and abut against the mating portion, thereby holding the locking member in the first unlocking position; when the engaging channel engages with the engaging member, the limiting portion moves out of the moving path of the locking member to allow the locking member to move toward the first locking position.

[0039] Furthermore, the card holder assembly is used to be mounted on the frame; at least one release operation element is mounted on the frame, the at least one release operation element is operably connected to the at least one locking element, and the at least one release operation element is used to drive the at least one locking element to move toward the first release position.

[0040] Furthermore, the at least one release operation member has a release identification area, which is used to indicate that the at least one locking member is in the first locked position or the first release position.

[0041] Furthermore, the frame includes at least one wheel seat for mounting a front wheel or a rear wheel, and the at least one release mechanism is slidably engaged with the at least one wheel seat; the release mechanism is connected to the at least one locking member via at least one traction rope.

[0042] Furthermore, the frame is provided with at least one guide mechanism for guiding the at least one traction rope, the at least one guide mechanism including at least one rotating member disposed near the at least one release operation member.

[0043] Furthermore, the release mechanism has a first driving ramp, which is inclined relative to the sliding direction of the release mechanism; the end of the traction rope abuts against the first driving ramp so as to be able to slide along the first driving ramp.

[0044] Furthermore, the release mechanism includes a first limiting wall, a first engaging structure formed between the first limiting wall and the first driving ramp; a second limiting wall is provided inside the wheel seat, a second engaging structure is formed on the second limiting wall; and the first driving ramp is located between the first limiting wall and the second limiting wall, and the end of the traction rope is adapted to engage with the first engaging structure or the second engaging structure.

[0045] Furthermore, a first guide slope is provided inside the wheel seat, the first guide slope forms an angle with the first drive slope, and the end of the traction rope abuts against the first drive slope and the first guide slope within the range of the angle.

[0046] Furthermore, the locking mechanism includes at least two locking elements connected by a linkage device, which allows the at least two locking elements to move synchronously to the first unlocking position; the frame is equipped with an unlocking state synchronization mechanism and at least two unlocking operation elements, which are respectively connected to the at least two locking elements, and the unlocking state synchronization mechanism allows the at least two unlocking operation elements to be in the unlocking state of the at least two locking elements at the same time.

[0047] Furthermore, the at least two release actuators are respectively connected to the at least two locking members via at least two traction ropes; the frame includes at least two wheel seats for mounting the front or rear wheels, and the at least two release actuators are slidably mounted to the at least two wheel seats.

[0048] Furthermore, each of the at least two release operating members has a first driving ramp, which is inclined relative to the sliding direction of the release operating member; the at least two release operating members abut against the ends of the at least two traction ropes via the first driving ramp; 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 drive the end of the traction rope away from the first driving ramp, thereby allowing the corresponding release operating member to slide downward.

[0049] Furthermore, the seat assembly includes a first seat assembly and a second seat assembly; the locking mechanism includes a first locking mechanism and a second locking mechanism, the first locking mechanism being disposed on the first seat assembly and the second locking mechanism being disposed on the second seat assembly, both the first locking mechanism and the second locking mechanism including at least one locking element; the first seat assembly and the second seat assembly are capable of rotating relative to each other about a rotation axis, so that the card holder assembly has an unfolded state and a folded state; and when the card holder assembly is in the unfolded state, the card holder assembly is adapted to support the object, and the at least one locking element is adapted to lock the object.

[0050] Furthermore, the seat assembly is mounted on a foldable connecting component, the connecting component including the rotation axis, the unfolded state of the connecting component corresponding to the unfolded state of the card holder assembly, and the folded state of the connecting component corresponding to the folded state of the card holder assembly.

[0051] Further, the connecting assembly includes: a first connecting member, to which the first base plate assembly is mounted; an auxiliary support member, to which the second base plate assembly is mounted; and the first connecting member and the auxiliary support member are pivotally connected by a pivot, the centerline of which forms the rotation axis.

[0052] Further, the first connecting member includes two first tubes arranged in parallel, the auxiliary support member includes two second tubes arranged in parallel, each of the first tubes being pivotally connected to an adjacent second tube via the pivot; the first base plate assembly is connected between the two first tubes and extends along a first direction, the second base plate assembly is connected between the two second tubes and extends along the first direction; and when the connecting assembly is in the deployed state, the first base plate assembly and the second base plate assembly are spaced apart in a second direction, the first direction and the second direction being non-parallel.

[0053] Furthermore, when the connecting assembly is in the unfolded state, the included angle between adjacent first and second pipes is 180 degrees; and when the connecting assembly is in the folded state, the included angle between adjacent first and second pipes is an acute angle; and / or, the first seat plate assembly is close to the pivot, the second seat plate assembly is far 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 offset.

[0054] Furthermore, sleeves are provided at both ends of the first seat plate assembly, each sleeve is fitted onto the corresponding first tube, and the pivot passes through the sleeve.

[0055] Further, the first seat assembly has at least one first engagement channel, each of the first engagement channels extending in a second direction; the first locking mechanism has at least one first locking member, each of the first locking members moving in a first direction to switch to a first locked position or a first unlocked position; in the first locked position, the first locking member extends into the corresponding first engagement channel; in the first unlocked position, the first locking member retracts from the corresponding first engagement channel; the second seat assembly has at least one second engagement channel, each of the second engagement channels extending in the second direction; the second locking mechanism has at least one second locking member, each of the second locking members moving in the first direction to switch to the first locked position or the first unlocked position; in the first locked position, the second locking member extends into the corresponding second engagement channel; in the first unlocked position, the second locking member retracts from the corresponding second engagement channel; the first direction and the second direction are not parallel.

[0056] Furthermore, the first locking mechanism includes two first locking elements connected by a first linkage component, the first linkage component controlling the two first locking elements to move synchronously, so that the two first locking elements switch synchronously between the first locking position and the first unlocking position; and / or, the second locking mechanism includes two second locking elements connected by a second linkage component, the second linkage component controlling the two second locking elements to move synchronously, so that the two second locking elements switch synchronously between the first locking position and the first unlocking position.

[0057] Furthermore, the at least one first locking member and the at least one second locking member are connected 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 unlocking position; and the first locking member and the second locking member connected to the same linkage member move in opposite directions.

[0058] Furthermore, the first base plate assembly is connected to the first pivot seat, the second base plate assembly is connected to the second pivot seat, the first pivot seat and the second pivot seat are pivotally connected and 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.

[0059] Furthermore, 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, which is used for detachable connection with the vehicle frame.

[0060] In another aspect, the present invention also provides a wheeled mobility device, including a frame and the aforementioned card holder assembly.

[0061] Furthermore, the frame is provided with a storage rack, the storage rack having at least one receiving cavity, and the opening of the at least one receiving cavity is provided with at least one clamping part, the clamping part being made of an elastic material.

[0062] In another aspect, this utility model also provides a wheeled mobility device, including a frame and a connecting assembly; the frame includes: a front support rod with a front wheel mounted on it; a rear support rod with a rear wheel mounted on it; and an upper support rod connected to a handrail; the upper ends of the front support rod, the upper ends of the rear support rod, and the lower ends of the upper support rod are pivotally connected via a pivot portion; the connecting assembly is pivotally connected to the frame, and the connecting assembly folds down as the frame folds down. A mounting bracket assembly is installed on the connecting assembly, the mounting bracket assembly including: a seat assembly for placing a vehicle thereon; and a locking mechanism including at least one locking member, the at least one locking member being disposed on the seat assembly and slidable between a first locked position and a first unlocked position; when the locking member is in the first locked position, the locking member can lock the vehicle; when the locking member is in the first unlocked position, the locking member can unlock the vehicle.

[0063] Further, the connecting assembly includes: a first connecting member, the front end of which is pivotally connected to a first pivot point of the front support rod; an auxiliary support member, the front end of which is pivotally connected to a second pivot point of the first connecting member, and the auxiliary support member is pivotally connected to a third pivot point of the rear support rod; a linkage member, the upper end of which is pivotally connected to a fourth pivot point of the upper support rod, and the lower end of which is pivotally connected to a fifth pivot point of the auxiliary support member; when the frame is in the unfolded state, the first connecting member and the auxiliary support member are unfolded, 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 the folded state, the first connecting member and the auxiliary support member are folded.

[0064] Furthermore, when the frame is deployed, the first connecting member and the auxiliary support member are horizontally arranged, and the second pivot point, the third pivot point and the fifth pivot point are on a straight line.

[0065] Furthermore, the connecting assembly also includes a seat plate support member, which is connected to the auxiliary support member and can move synchronously with the auxiliary support member. The seat plate support member is used to install the mounting bracket assembly, which is used to engage with the carrier.

[0066] Furthermore, the seat plate support is disposed inside 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 plate support is equipped with the card holder assembly, the card holder assembly including multiple engagement points.

[0067] Furthermore, a card holder assembly is installed on the auxiliary support member, and the card holder assembly includes multiple engagement points.

[0068] Furthermore, the linkage has an S-shaped structure, which sequentially comprises a first section, a second section, and a third section.

[0069] Furthermore, a mounting bracket assembly is installed on the connecting component, the mounting bracket assembly including a seat assembly for placing and supporting the carrier; the seat assembly has a first extension and / or a second extension, the first extension extending rearward from the seat assembly and the second extension extending forward from the seat assembly.

[0070] Furthermore, a card holder assembly is installed on the connecting component, and the card holder assembly includes multiple engagement points; when the frame is folded, the front support rod, the rear support rod, and the upper support rod move closer to each other, and the connecting component drives the card holder assembly to pivot, so that the front end of the card holder assembly pivots downward and the rear end of the card holder assembly pivots upward.

[0071] In another aspect, this utility model also provides a wheeled mobility device, comprising: a frame including: a front support rod with a front wheel mounted thereon; a rear support rod with a rear wheel mounted thereon; an upper support rod connected to a handrail; the upper ends of the front support rod, the upper ends of the rear support rod, and the lower ends of the upper support rod are pivotally connected via a pivot portion; a seat assembly mounted on the frame and used to support and lock the vehicle; wherein, when the frame is unfolded, the center of gravity of the seat assembly shifts relative to the pivot portion toward the rear wheel. The seat assembly includes: a seat assembly for placing the vehicle thereon; and a locking mechanism including at least one locking member disposed on the seat assembly and slidable between a locked position and an unlocked position. When the locking member is in the locked position, it locks the vehicle; when the locking member is in the unlocked position, it unlocks the vehicle.

[0072] Furthermore, when the frame is in the unfolded state, the center of gravity of the card holder assembly is close to or located on the plane formed by the rear support rod.

[0073] Furthermore, when the frame is in the unfolded state, the card holder assembly is lower than the pivot portion.

[0074] In another aspect, this utility model also provides a wheeled mobility device, comprising: a frame; a seat assembly mounted on the frame and extending in a left-right direction; the seat assembly includes a seat plate assembly and a locking mechanism, the seat plate assembly being used to place a vehicle thereon, the locking mechanism including at least one locking member, the at least one locking member being disposed on the seat plate assembly and slidable between a locked position and an unlocked position, wherein when the locking member is in the locked position, the locking member can lock the vehicle, and when the locking member is in the unlocked position, the locking member can unlock the vehicle; wherein the frame includes a first crossbar and / or a second crossbar extending in a left-right direction; the first crossbar is located at a predetermined distance in front of the seat assembly, and the first crossbar and the seat assembly cooperate to support the vehicle; the second crossbar is located at a predetermined distance behind the seat assembly, and the second crossbar and the seat assembly cooperate to support the vehicle.

[0075] Furthermore, the frame includes: 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 connected to the front support rod and the rear support rod respectively; a bracket assembly mounted on the connecting assembly; the front support rod includes a first crossbar, and / or the connecting assembly includes a second crossbar; and / or the position of the second crossbar in the front-rear direction is adjustable.

[0076] Furthermore, the front support rod is pivotally connected to the rear support rod, and the frame is foldable; the connecting assembly includes a first connecting member and an auxiliary support member, the first connecting member is pivotally connected to a 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 a third pivot point of the rear support rod; when the frame is in the unfolded state, the first connecting member and the auxiliary support member are unfolded, and the second pivot point is located between the first pivot point and the third pivot point; when the frame is in the folded state, the first connecting member and the auxiliary support member are folded; the card holder assembly is connected to the first connecting member or the auxiliary support member; the auxiliary support member includes a second crossbar.

[0077] Furthermore, the card holder assembly has a sleeve for engaging with the first connecting member or the auxiliary support member, and the pivot of the second pivot point passes through the sleeve.

[0078] 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 which is connected to the armrest; the connecting assembly also includes a linkage, the upper end of which is connected to the upper support rod, and the lower end of which is connected to the auxiliary support.

[0079] Furthermore, the first crossbar is provided with a first groove or a first positioning protrusion; and / or, the second crossbar is provided with a second groove or a second positioning protrusion; and / or, the card holder assembly is provided with a third groove or a third positioning protrusion.

[0080] Furthermore, the first crossbar is equipped with a first abutment for abutting against the vehicle; and / or, the second crossbar is equipped with a second abutment for abutting against the vehicle.

[0081] Furthermore, the card holder assembly includes at least one engaging channel extending in the front-rear direction, the at least one engaging channel being arranged in a row spaced apart from each other in the left-right direction; the at least one locking member is slidable in the left-right direction, in the locked position, the at least one locking member extends into the at least one engaging channel to lock the vehicle, and in the unlocked position, the at least one locking member retracts from the at least one engaging channel to unlock the vehicle.

[0082] Furthermore, the frame includes at least one wheel seat for mounting a front wheel or a rear wheel, and at least one release mechanism is slidably engaged with the at least one wheel seat; the at least one release mechanism 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 mechanism has a release identification area for indicating that the at least one locking member is in the locked position or the release position.

[0083] Furthermore, the card holder assembly also includes at least one retaining mechanism, which locks the at least one locking member in the unlocking position when the at least one locking member is driven to the unlocking position.

[0084] In addition, this utility model provides a wheeled mobile device, including: a frame; a mounting bracket assembly, mounted on the frame and used to engage a vehicle; the mounting bracket assembly includes at least one locking member, the at least one locking member having a locking position for locking the vehicle and an unlocking position for releasing the vehicle, the at least one locking member being slidable between the locking position and the unlocking position, the locking member being able to lock the object when in the locking position, and being able to release the object when in the unlocking position; and an indicating device, mounted on the frame and / or the mounting bracket assembly, for indicating the working state of the wheeled mobile device; the working state includes whether the mounting bracket assembly is engaged with the vehicle, and / or whether the at least one locking member is locking the vehicle.

[0085] Furthermore, the card holder assembly includes at least one engagement channel for engaging with an engagement member of the carrier; the indicating device includes a first indicating device for indicating whether the at least one engagement member is engaged in the at least one engagement channel.

[0086] Further, the first indicating device includes: a movable member installed in a slide communicating with the engagement channel; the movable member having an abutting end adapted to extend into the engagement channel; and a sliding member operably connected to the movable member and having an engagement indicating area; when the engagement member is engaged in the engagement channel, the abutting end is pressed out of the engagement channel by the engagement member, causing the movable member to drive the sliding member to slide, thereby changing the position of the engagement indicating area.

[0087] Furthermore, the frame includes a hollow rod, the slider can slide within the rod, and the rod is provided with an observation hole for observing the engagement indicator area; the first indicator device also includes a cable connected between the slider and the movable member.

[0088] Furthermore, the first indicating device also includes a first reset member, which abuts against the slider to drive the slider to reset, so that the cable drives the abutting end to extend into the engagement channel.

[0089] Furthermore, the movable component has a connecting portion located outside the slide rail, and the cable is supported by a guide frame located outside the slide rail 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 rail.

[0090] Furthermore, the movable member has a snap-fit ​​end away from the abutting end; when the snap-fit ​​member is snapped into the snap-fit ​​channel and the locking member moves to the unlocking position, the snap-fit ​​end engages with the locking member, locking the locking member in the unlocking position.

[0091] Furthermore, the indicating device includes a second indicating device for indicating that the at least one locking member is in the locked position or the unlocked position.

[0092] Furthermore, the second indicating device includes at least one release operation member operably connected to the at least one locking member, the at least one release operation member having a release identification area for indicating the position of the at least one locking member.

[0093] Furthermore, the wheeled mobile device also includes at least one retaining mechanism, which locks the at least one locking member in the unlocking position when the at least one locking member is driven to the unlocking position, such that the corresponding unlocking operation member remains in the unlocking position of unlocking the locking member.

[0094] Furthermore, the card holder assembly includes a seat plate assembly for placing the carrier thereon; the at least one locking member and the at least one release operating member are disposed 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 ramp, the at least one release operating member and the at least one locking member are operably connected through the second driving ramp, such that the movement direction of the release operating member is perpendicular to the movement direction of the locking member.

[0095] Furthermore, the frame includes wheel seats for mounting the front or rear wheels; the at least one release mechanism is slidably mounted to the wheel seat and connected to the at least one locking mechanism via at least one traction rope.

[0096] Furthermore, the card holder assembly includes at least two locking members connected by a linkage device, which allows the at least two locking members to move synchronously to the unlocking position; the wheeled moving device includes an unlocking state synchronization mechanism and at least two unlocking operation members, which are operably connected to the at least two locking members respectively, and the unlocking state synchronization mechanism allows the at least two unlocking operation members to be in the unlocking state of the at least two locking members simultaneously.

[0097] Furthermore, the frame includes wheel seats for mounting the front or rear wheels; the at least one release mechanism is slidably mounted to the wheel seat and connected to the at least one locking member via at least one traction rope; the at least two release mechanisms are operably connected to the ends of at least two traction ropes via a first drive ramp; the release state synchronization mechanism includes at least two second reset members, each second reset member abutting against the end of the corresponding traction rope to push the end of the traction rope away from the first drive ramp.

[0098] In another aspect, this utility model also provides a wheeled mobility device, comprising: a frame including at least two wheel seats for mounting front or rear wheels; a mounting assembly including: a seat assembly for placing a vehicle thereon; a locking mechanism including at least two locking members; the at least two locking members are disposed on the seat assembly and are slidable between a locked position and an unlocked position; when the locking member is in the locked position, the locking member can lock the vehicle; when the locking member is in the unlocked position, the locking member can unlock 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 unlocked position; at least two unlocking operating members slidably mounted to the at least two wheel seats respectively; the at least two unlocking operating members are respectively connected to the at least two locking members via at least two traction ropes; and a unlocking state synchronization mechanism that allows the at least two unlocking operating members to simultaneously be in the state of unlocking the at least two locking members.

[0099] Furthermore, the at least two locking members are connected by a linkage device. When any one 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.

[0100] Furthermore, the locking mechanism includes two locking elements, and the linkage device includes a linkage component connected between the two locking elements, the linkage component allowing the two locking elements to move synchronously in opposite directions.

[0101] Furthermore, each of the at least two release operation members has a first driving ramp, and the at least two release operation members are operably connected to the ends of the at least two traction ropes through the first driving ramp; the release state synchronization mechanism includes at least two second reset members, each of the second reset members abutting against the end of the corresponding traction rope to push the end of the traction rope away from the first driving ramp.

[0102] Furthermore, a first guide slope is provided inside the wheel seat, the first guide slope forms an angle with the first drive slope, and the end of the traction rope abuts against the first drive slope and the first guide slope within the range of the angle.

[0103] Furthermore, the wheeled mobile device also includes a retaining mechanism, which locks the locking member in the unlocking position when the locking member is driven to the unlocking position, such that the unlocking operation member remains in the second unlocking position of releasing the locking member.

[0104] In another aspect, this utility model also provides a support frame for supporting a seat assembly, the support frame including a longitudinal rod, a connecting rod, and a shock-absorbing rod connected in a triangular structure; the longitudinal rod is disposed below the seat assembly and fixedly connected to the seat assembly; a first end of the connecting rod is connected to a first end of the longitudinal rod, and a second end of the connecting rod is connected to a 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 cushioning support to the seat assembly.

[0105] 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.

[0106] 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.

[0107] Furthermore, the longitudinal rod includes a limiting finger disposed at a first end of the longitudinal rod, the limiting finger limiting the angle of downward pivoting of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

[0108] Furthermore, the longitudinal rod includes a limiting protrusion disposed at the first end of the longitudinal rod, the limiting protrusion limiting the upward pivoting angle of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

[0109] Furthermore, the support frame also includes a limiting member, the first end of which is slidably connected to the longitudinal rod, and the second end of which is pivotally connected to the connecting rod.

[0110] In another aspect, the present invention also provides a locking mechanism, comprising: two first locking members, the two first locking members moving in opposite directions to a locked position or an unlocked position; a linkage component, including 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 component being pivotally connected to the two first locking members through the two pivots; the linkage component is configured such that when either of the first locking members moves, it causes the two pivots to move in opposite directions, so that the two first locking members move synchronously in opposite directions.

[0111] Furthermore, the linkage component includes a four-bar linkage.

[0112] Furthermore, the linkage component 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 is the center connection point. The two links of the first link, the second link, the third link, and the fourth link that are connected to the center connection point are respectively connected to the two first locking members. The line connecting the fixed connection point and the center connection point is perpendicular to the moving direction of the two first locking members.

[0113] Furthermore, the locking mechanism also includes two second locking members, which are parallel to the two first locking members; the first locking members and the second locking members located diagonally among the two first locking members and the two second locking members are connected by a linkage.

[0114] Furthermore, the linkage is a connecting rod or a traction component.

[0115] Furthermore, the linkage is a connecting rod, and the two first locking members and the two second locking members are connected by the two connecting rods, which are pivotally connected at their intersection.

[0116] In another aspect, the present invention also provides a retaining mechanism for holding a locking member that can slide between a locked position and an unlocked position in the unlocked position, the locking member being mounted on a seat assembly; the retaining mechanism includes: a movable member mounted in a slide rail of the seat assembly, the movable member having an abutting end and a locking end away from the abutting end; the abutting end being pressable against by a carrier placed on the seat assembly, the locking member being used to lock the carrier; a reset device for driving the abutting end to move away from the locking end; when the carrier is locked by the locking member, the abutting end is pressed against by the carrier and moves towards the locking end; when the locking member moves to the unlocked position, the locking end engages with the locking member, thereby locking the locking member in the unlocked position.

[0117] Furthermore, the latching end is provided with a first latching part, and the locking member is provided with a second latching part. The second latching part engages with the first latching part to lock the locking member in the unlocking position.

[0118] Furthermore, the locking member is provided with an elastic arm, and the second latching part is provided on the elastic arm; and / or, one of the first latching part and the second latching part is a slot, and the other is a wedge-shaped step.

[0119] Furthermore, the locking member is provided with a mating part, and the movable member has a limiting part located outside the slide; when the carrier releases its pressure on the movable member, the reset device drives the movable member to move, so that the limiting part moves to the moving path of the locking member and abuts against the mating part, thereby keeping the locking member in the unlocked position.

[0120] Furthermore, when the carrier presses down on the abutting end of the movable member, the limiting part moves out of the movement path of the locking member to allow the locking member to move toward the locking position.

[0121] Furthermore, the locking member has a recess, and the mating portion is formed on the wall of the recess. Attached Figure Description

[0122] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0123] Figure 1to Figure 4 A wheeled mobility device according to an embodiment of the present invention is schematically shown, wherein... Figure 3 and Figure 4 The vehicle's body has been removed to show the connection between the vehicle's support structure and locking mechanism;

[0124] Figure 5 A vehicle frame according to an embodiment of the present invention is shown schematically;

[0125] Figure 6 to Figure 8 A card holder assembly according to an embodiment of the present invention is illustrated schematically;

[0126] Figure 9 A support structure according to an embodiment of the present invention is illustrated schematically;

[0127] Figure 10 and Figure 11 A support structure according to another embodiment of the present invention is schematically shown;

[0128] Figure 12 to Figure 14 A schematic diagram of a vehicle frame equipped with a card holder assembly according to an embodiment of the present invention;

[0129] Figure 15 The illustration schematically shows a vehicle frame with a support structure installed according to an embodiment of the present invention;

[0130] Figure 16 and Figure 17 The illustration schematically shows a vehicle frame equipped with a card holder assembly according to an embodiment of the present invention, wherein the vehicle frame is in a folding process;

[0131] Figure 18 and Figure 19 The illustration schematically shows a vehicle frame equipped with a card holder assembly according to an embodiment of the present invention, wherein the vehicle frame is in a fully folded state.

[0132] Figure 20 and Figure 21 A card holder assembly according to an embodiment of the present invention is schematically shown, wherein Figure 20 The upper housing of the seat plate assembly has been removed to reveal the locking mechanism;

[0133] Figure 22 and Figure 23 A locking mechanism according to an embodiment of the present invention is illustrated schematically;

[0134] Figure 24 The schematic illustration shows a wheeled mobility device according to an embodiment of the present invention, wherein the housing of the vehicle has been removed to show the connection between the support device of the vehicle and the locking mechanism.

[0135] Figure 25 and Figure 26 A locking mechanism and a carrier placed thereon are schematically shown according to an embodiment of the present invention;

[0136] Figure 27 and Figure 28 A card holder assembly according to another embodiment of the present invention is schematically shown, wherein Figure 27 The upper housing of the seat plate assembly has been removed to reveal the locking mechanism;

[0137] Figure 29 The illustration schematically shows a card holder assembly with a retaining mechanism according to an embodiment of the present invention, wherein the upper housing of the seat plate assembly is removed to show the retaining mechanism;

[0138] Figure 30 schematically showing along Figure 29 The sectional view of the retaining mechanism is taken by line B3-B3, in which a section of the seat assembly is shown accordingly to illustrate the structural relationship between the retaining mechanism and the seat assembly;

[0139] Figure 31 and Figure 32 A schematic cross-sectional view of a holding mechanism according to an embodiment of the present invention is shown, wherein a carrier is placed above the seat assembly;

[0140] Figure 33 A schematic cross-sectional view of a retaining mechanism according to an embodiment of the present invention is shown;

[0141] Figure 34 A perspective view of a wheeled mobile vehicle according to an embodiment of the present invention is shown;

[0142] Figure 35 A perspective view of a vehicle frame according to an embodiment of the present utility model is shown;

[0143] Figure 36 Show Figure 35 A three-dimensional schematic diagram of the chassis from another angle;

[0144] Figure 37 A perspective view of a card holder assembly according to an embodiment of the present invention is shown;

[0145] Figure 38 Show Figure 37 The diagram shown is a three-dimensional representation of the card slot assembly after the base plate assembly has been removed.

[0146] Figure 39 Show Figure 35 A three-dimensional schematic diagram of the frame and the seat plate support mounted on the frame;

[0147] Figure 40 Show Figure 39 A three-dimensional schematic diagram of the frame and seat support components from another angle;

[0148] Figure 41 A perspective view of the vehicle frame and the card holder assembly mounted on the vehicle frame according to an embodiment of the present utility model is shown.

[0149] Figure 42 Show Figure 41 A three-dimensional schematic diagram of the frame and chassis assembly from another angle;

[0150] Figure 43 Show Figure 34 A side view of the wheeled mobile vehicle shown;

[0151] Figure 44 Show Figure 43 The wheeled mobile vehicle shown is a front view after the vehicle has been removed;

[0152] Figure 45 Show Figure 41 Side view of the frame and card holder assembly shown;

[0153] Figure 46 Show Figure 45 The frame and cassette assembly shown are in a side view during the folding process;

[0154] Figure 47 Show Figure 45 The side view of the frame and cassette assembly shown is after it has been fully folded down.

[0155] Figure 48 Show Figure 47 The front view of the frame and card slot assembly shown;

[0156] Figure 49 A perspective view of a wheeled mobility device according to an embodiment of the present invention is shown schematically;

[0157] Figure 50 Schematic illustration Figure 49 A 3D view of the chassis and chassis components;

[0158] Figure 51 Schematic illustration Figure 50 A top view of the frame and chassis assembly shown;

[0159] Figure 52 Schematic illustration Figure 50 The side view shown shows the frame and cradle assembly in a state between unfolded and folded.

[0160] Figure 53 Schematic illustration Figure 50 The side view shown is of the frame and cradle assembly in a folded-down state;

[0161] Figure 54 Schematic illustration Figure 51 The C1-C1 sectional view of the card slot assembly, and the vehicle is locked by the locking mechanism;

[0162] Figure 55 Schematic illustration Figure 50 The image shows a bottom-view perspective of the card slot assembly, with the lower housing omitted.

[0163] Figure 56 Schematic illustration Figure 50 A top-view perspective view of the card slot assembly, omitting the upper housing in the figure;

[0164] Figure 57 Schematic illustration Figure 50 A perspective view of the card holder assembly, omitting the upper and lower housings;

[0165] Figure 58 Schematic illustration Figure 51 The C1-C1 section view of the card holder assembly shows that the locking element is locked by the retaining mechanism;

[0166] Figure 59 Schematic illustration Figure 51 The C1-C1 sectional view of the card holder assembly shows that the locking element is separate from the retaining mechanism;

[0167] Figure 60 Schematic illustration Figure 49 Partial sectional view of C2-C2;

[0168] Figure 61 Schematic illustration Figure 51 Partial sectional view of C3-C3;

[0169] Figure 62 Schematic illustration Figure 57 The side view of the locking and linkage components of the card slot assembly, with the locking component in the locked position;

[0170] Figure 63 Schematic illustration Figure 57 The side view of the locking element and linkage element of the card slot assembly, with the locking element in the unlocked position;

[0171] Figure 64 Schematic illustration Figure 49 A perspective view of a modified embodiment of a storage rack installed on an armrest;

[0172] Figure 65 It shows Figure 64A top view of the armrests and storage rack shown;

[0173] Figure 66 Schematic illustration Figure 64 An exploded view of the storage rack in the image;

[0174] Figure 67 The illustration schematically shows a perspective view of a wheeled mobility device according to some embodiments of the present invention, the wheeled mobility device having a support assembly according to some embodiments of the present invention;

[0175] Figure 68 Schematic illustration Figure 67 A perspective view of the frame and chassis assembly shown;

[0176] Figure 69 Schematic illustration Figure 68 A top view of some components of the chassis and the card slot assembly shown;

[0177] Figure 70 Schematic illustration Figure 68 Side view of the frame and card slot assembly shown;

[0178] Figure 71 Schematic illustration Figure 68 The side view shown shows the frame and cradle assembly in a state between unfolded and folded.

[0179] Figure 72 Schematic illustration Figure 68 The side view shown is of the frame and cradle assembly in a folded-down state;

[0180] Figure 73 Schematic illustration Figure 68 A perspective view of the frame and chassis assembly in a folded-down state;

[0181] Figure 74 Schematic illustration Figure 68 The first base plate assembly shown is a perspective view, with the upper housing omitted, and each of the first locking elements is in the locked position;

[0182] Figure 75 Schematic illustration Figure 68 The diagram shows a bottom-view perspective view of some components of the chassis and the internal components of the first seat plate assembly.

[0183] Figure 76 Schematic illustration Figure 74 The structure of the first locking element and the linkage component, wherein each of the first locking elements is in the unlocked position;

[0184] Figure 77 Schematic illustration Figure 68The figure shows a perspective view of the second base plate assembly, with the upper housing omitted.

[0185] Figure 78 Schematic illustration Figure 69 The U5-U5 sectional view, the lower housing of the second base plate assembly is omitted in the figure, in which each of the second locking elements is in the locked position;

[0186] Figure 79 Schematic illustration Figure 68 The cross-sectional view of the frame and card holder assembly shown shows the release mechanism in the locked state.

[0187] Figure 80 Schematic illustration Figure 68 The cross-sectional view of the frame and card holder assembly shown shows the release mechanism in the release locking state;

[0188] Figure 81 Schematic illustration Figure 69 The U1-U1 sectional view shows the first locking member in the locked position, and the vehicle's engaging member not entering the first engaging channel;

[0189] Figure 82 Schematic illustration Figure 69 A U2-U2 sectional view, wherein the first locking member is in the locked position and the movable part of the retaining mechanism is pressed by the engaging part of the carrier;

[0190] Figure 83 Schematic illustration Figure 68 The figure shows a bottom perspective view of some components of the first seat plate assembly and the retaining mechanism, wherein the first latching part moves onto the movement path of the second latching part;

[0191] Figure 84 Schematic illustration Figure 83 U3-U3 sectional view;

[0192] Figure 85 Schematic illustration Figure 68 The figure shown is a bottom perspective view of some components of the first seat plate assembly and the retaining mechanism, wherein the first latching part and the second latching part are engaged;

[0193] Figure 86 Schematic illustration Figure 68 The figure shows a bottom perspective view of some components of the first seat plate assembly and the retaining mechanism, including the movement path of the first latching part moving out of the second latching part;

[0194] Figure 87 Schematic illustration Figure 68 Another side view of the frame and chassis assembly shown;

[0195] Figure 88Schematic illustration Figure 68 Another perspective view of the frame and chassis assembly shown;

[0196] Figure 89 The illustration schematically shows a perspective view of a wheeled mobility device according to some embodiments of the present invention, the wheeled mobility device having a support assembly according to other embodiments of the present invention;

[0197] Figure 90 Schematic illustration Figure 89 A perspective view of the frame and chassis assembly shown;

[0198] Figure 91 Schematic illustration Figure 90 The diagram shows a bottom perspective view of some components of the frame and the internal components of the first seat plate assembly, with each of the first locking elements in the locked position;

[0199] Figure 92 Schematic illustration Figure 90 The diagram shows a bottom perspective view of some components of the frame and the internal components of the first seat plate assembly, with each of the first locking elements in the unlocked position;

[0200] Figure 93 Schematic illustration Figure 92 The enlarged view shows the first locking member locked in the unlocked position by the retaining mechanism, wherein the limiting part of the retaining mechanism and the mating part of the first locking member abut each other;

[0201] Figure 94 Schematic illustration Figure 90 The U6-U6 sectional view shows the first locking member in the locked position, the engaging member of the vehicle entering the first engaging channel, and the limiting part of the holding mechanism and the engaging part of the first locking member being separated.

[0202] Figure 95 Schematic illustration Figure 90 The diagram shows a bottom perspective view of some components of the frame and the internal components of the first seat plate assembly, wherein the first locking member is in the locked position, the vehicle's engaging member enters the first engaging channel, and the limiting part of the holding mechanism and the mating part of the first locking member are separated.

[0203] Figure 96 Schematic illustration Figure 95 A partial enlarged view of some components, in which the first locking member is in the unlocked position, the limiting part of the holding mechanism and the mating part of the first locking member are separated, and the engaging part of the carrier is ready to be moved out from the first engaging channel;

[0204] Figure 97 Schematic illustration Figure 90The U6-U6 sectional view shows that the engaging part of the vehicle has been moved out of the first engaging channel, the limiting part of the retaining mechanism and the mating part of the first locking part are in contact, and the first locking part is locked in the unlocked position.

[0205] Figure 98 Schematic illustration Figure 90 The diagram shows a bottom perspective view of some components of the frame and the internal components of the first seat plate assembly, in which the engaging part of the vehicle has been moved out of the first engaging channel, the limiting part of the retaining mechanism and the mating part of the first locking part are in contact, and the first locking part is locked in the unlocked position.

[0206] Figure 99 Schematic illustration Figure 90 The cross-sectional view of the frame shown shows the release mechanism in the locked state.

[0207] Figure 100 A perspective view schematically illustrates that both release mechanisms are simultaneously in the unlocked state;

[0208] Figure 101 Schematic illustration Figure 90 The cross-sectional view of the frame shown shows the release mechanism in the release locking state;

[0209] Figure 102 A perspective view schematically illustrates two release mechanisms simultaneously in the release / locking state;

[0210] Figure 103 The illustration schematically shows a perspective view of a wheeled mobility device according to some embodiments of the present invention, the wheeled mobility device having a support assembly according to other embodiments of the present invention;

[0211] Figure 104 Schematic illustration Figure 103 A perspective view of the chassis and support components shown;

[0212] Figure 105 Schematic illustration Figure 104 The side view shown shows the frame and support components in a folded-down state;

[0213] Figure 106 Schematic illustration Figure 104 A three-dimensional view of the supporting components shown;

[0214] Figure 107 Schematic illustration Figure 106 The figure shows a perspective view of some components of the support assembly, omitting the upper housings of the first and second base plate assemblies.

[0215] Figure 108 Schematic illustration Figure 106 An exploded view of the supporting components shown;

[0216] Figure 109 Schematic illustration Figure 106 Exploded view of the first pivot connector and the unlocking mechanism;

[0217] Figure 110 Schematic illustration Figure 106 A three-dimensional view of the cover and the locking mechanism;

[0218] Figure 111 Schematic illustration Figure 106 Another perspective view of the support components shown;

[0219] Figure 112 Schematic illustration Figure 106 A cross-sectional view of U4-U4, showing the support components in the unfolded state;

[0220] Figure 113 Schematic illustration Figure 112 The view shown depicts the support components in a folded-down state; and

[0221] Figure 114 Schematic illustration Figure 107 The exploded view of the release mechanism and the first locking mechanism is shown. Detailed Implementation

[0222] In the following, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Although the present invention is readily adaptable to various modifications and alternatives, specific embodiments thereof are shown by way of example in the drawings. However, the present invention should not be construed as limited to the embodiments set forth herein; rather, the present invention will cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

[0223] The present invention will now be described in detail with reference to the accompanying drawings.

[0224] First Embodiment

[0225] Reference Figure 1 and Figure 2 The illustration schematically depicts a wheeled mobility device 1000 according to some embodiments of the present invention. Figure 1 This is a perspective view of the wheeled mobile device 1000 of this embodiment. Figure 2 This is a top-view perspective view of the wheeled mobile device 1000.

[0226] like Figure 1As shown, the wheeled mobility device 1000 of this embodiment includes a frame 100, a mounting bracket 200, and a carrier 300. The frame 1000 has a structure similar to a handcart, the specific structure of which will be described below. The mounting bracket 200 is mounted on the frame 1000 and can lock and unlock with an object to be locked (also referred to as "the object to be locked," hereinafter referred to as "the object"), so that the object is securely placed on it, thereby improving the safety of the object during movement. Moreover, by operating the mounting bracket 200, the user can easily install or remove the object from the frame 100.

[0227] In this embodiment, as Figure 1 As shown, the object can be a vehicle 300. The vehicle 300 can be, but is not limited to, a box-shaped structure. The vehicle 300 is used to carry infants or animals (such as pets) and can be mounted on the frame 100 via the card slot assembly 200.

[0228] Combination Figure 2 As shown, the carrier 300 includes a handle 330 and a housing 340, wherein the handle 330 is used to lift the carrier 300, and the housing 340 is used to carry infants or animals. When the carrier 300 is mounted on the seat assembly 200, the longitudinal centerline M1-M1 of the carrier 300 and the longitudinal centerline M2-M2 of the seat assembly 200 are substantially on the same vertical plane. That is, the carrier 300 is substantially symmetrically arranged with respect to the longitudinal centerline M2-M2 of the seat assembly 200. It should be noted that the "longitudinal centerline" is the centerline perpendicular to the line connecting the two ends of the handle 330 to the connection point of the carrier 300. Figure 2 The direction indicated by "F2" (i.e., the longitudinal direction F2, which can also be called the front-back direction or the second direction) is the longitudinal extension direction parallel to the longitudinal center lines M1-M1 and M2-M2.

[0229] In some embodiments, such as Figure 2 As shown, the lateral centerline M3-M3 of the carrier 300 and the lateral centerline M4-M4 of the card holder assembly 200 are roughly on the same vertical plane. At this time, the carrier 300 is roughly centered relative to the card holder assembly 200. It should be noted that the "lateral centerline" is the centerline parallel to the line connecting the two ends of the handle 330 to the connection position of the carrier 300. Figure 2 The direction indicated by "F1" (i.e., the lateral direction F1, which can also be called the left-right direction or the first direction) is the lateral extension direction parallel to the lateral center lines M3-M3 and M4-M4. In some embodiments, the line connecting the two ends of the handle 330 is parallel to the lateral center line M3-M3 of the vehicle 300 and lies on the same vertical plane, so that the user can keep the vehicle 300 balanced when carrying it.

[0230] It should be noted that, unless otherwise explicitly specified and limited, the directional terms such as "front," "rear," "left," and "right" used in the various embodiments of this utility model regarding the wheeled mobile device 1000 and the frame 100 are based on the "front," "rear," "left," and "right" orientations of the wheeled mobile device 1000 and the frame 100 during normal driving. Furthermore, arrows B and P are used to schematically indicate the "front" and "rear" directions in the figures, and arrows L and R are used to schematically indicate the "left" and "right" directions. These directional terms are only used to make the description of the embodiments of this utility model clearer and are not intended to unduly limit the scope of protection of this utility model.

[0231] Reference Figure 3 and Figure 4 , Figure 3 A perspective view of the wheeled mobile device 1000 after removing the box 340 of the vehicle 300, and Figure 4 A top-view perspective view of the wheeled mobility device 1000 after the housing 340 has been removed.

[0232] like Figure 3 and Figure 4 As shown, the vehicle 300 also includes a support assembly 310, which includes a first support 3111, a second support 3112, and a third support 3113. The first support 3111 is located above the third support 3113, and the second support 3112 is connected between the first support 311 and the third support 313. The support assembly 310 encloses a space for receiving the housing 340. A handle 330 is connected to the first support 3111. The vehicle 300 includes a locking member 311, and more specifically, the third support 3113 of the support assembly 310 includes the locking member 311. In some embodiments, the locking member 311 is an annular structure (e.g., a generally rectangular annular structure), but the structure of the locking member 311 is not limited to this. When the vehicle 300 is mounted on the mounting bracket assembly 200, the locking member 311 engages with the mounting bracket assembly 200 so that the vehicle 300 can be securely mounted on the frame 100 via the mounting bracket assembly 200.

[0233] In some embodiments, such as Figure 4As shown, the card holder assembly 200 provides a plurality of engagement points, with one engagement point shown in a partially enlarged view. When the carrier 300 is mounted on the card holder assembly 200, the engaging member 311 engages with the card holder assembly 200 at each engagement point. In some embodiments, the card holder assembly 200 provides, for example, four engagement points that are generally symmetrically distributed with respect to the longitudinal center lines M1-M1 of the carrier 300 (which are also the longitudinal center lines M2-M2 of the card holder assembly 200), and symmetrically distributed with respect to the transverse center lines M3-M3 of the carrier 300 (which are also the transverse center lines M4-M4 of the card holder assembly 200). In some embodiments, these four engagement points are centrally symmetrically arranged on the card holder assembly 200.

[0234] Therefore, in this embodiment of the invention, the vehicle 300 is symmetrically positioned on the mounting bracket 200, allowing it to be stably mounted on the mounting bracket 200 and the frame 100. By rationally setting the positions of the aforementioned multiple engagement points on the mounting bracket 200, the user can easily place the vehicle 300 symmetrically on the frame 100, and the vehicle 300 is also positioned appropriately on the frame 100 in the front-rear direction. This allows the frame 100 to provide stable support for the vehicle 300, improving the overall stability of the wheeled mobile device 1000, enabling it to maintain balance during travel, and also providing better impact resistance and safety.

[0235] Reference Figure 5 The illustration schematically shows a frame 100 according to some embodiments of the present invention.

[0236] 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 handlebar 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.

[0237] In some embodiments, the front support rod 11 may have a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connecting the two rods 111. The rear support rod 12 may include two parallel rods 121 and a rear crossbar 122 connecting the two rods 121. The upper ends of each rod 111 of the front support rod 11 are pivotally connected to the upper ends of each rod 121 of the rear support rod 12. At least one front wheel 191 is connected to the lower side of the front support rod 11. The lower ends of the two rods 122 of the rear support rod 12 are respectively connected to the corresponding rear wheels 192. Figure 5As shown, in this embodiment, two front wheels 191 are provided, which are symmetrically arranged on the front support rod 11 and pivotally mounted. As an example, both front wheels 191 are omnidirectional wheels. The two rear wheels 192 are rotatably connected to the two rods 121 of the rear support rod 12 and can roll in the front-rear direction of the frame 100.

[0238] While some embodiments of the present invention have been listed above, the present invention is not limited to the structure and quantity of the components described above. For example, in other embodiments, the rear support rod 12 may have a U-shaped structure and connect two rear wheels 192. Optionally, the front support rod 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 swivel wheel.

[0239] 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 steer.

[0240] Reference Figures 6 to 8 The illustration schematically shows a card holder assembly 200 according to some embodiments of the present invention. Specifically, Figure 6 A 3D view of the card slot assembly 200. Figure 7 A side view of the card holder assembly 200, and Figure 8 For along Figure 6 The sectional view taken by the section line B1-B1 in the diagram.

[0241] like Figure 6 As shown, the card holder 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 housing and a lower housing, and the locking mechanism is disposed within the seat plate assembly 2. Figure 6 The locking mechanism is shielded by the upper housing of the base plate assembly 2. The specific structure of the locking mechanism will be described below.

[0242] In some embodiments, the support structure 240 may include two support frames 241, which are respectively disposed on the left and right sides of the base plate assembly 2. Figure 6 Only one support frame 241 is shown in the diagram; the other support frame 241 is obscured by the seat assembly 2. For example, the two support frames 241 are symmetrically arranged on both sides of the seat assembly 2 about the longitudinal centerline M5-M5. It should be noted that the longitudinal centerline M5-M5 is along... Figure 6 The longitudinal direction F2 extends as shown.

[0243] Further reference Figure 7 and Figure 8Each support frame 241 includes a longitudinal rod 2411, a connecting rod 2412, and a shock-absorbing rod 2413, which are connected to define a triangular structure. The longitudinal rod 2411 is positioned below the seat assembly 2 and is fixedly connected to the seat assembly 2 (e.g., the lower housing of the seat assembly 2). The first end 2412a of the connecting rod 2412 is pivotally connected to the first end 2411a of the longitudinal rod 2411 (e.g., ...). Figure 7 As shown, the second end 2412b of the connecting rod 2412 is connected to the first end 2413a of the damping rod 2413. The second end 2413b of the damping rod 2413 is connected to the second end 2411b of the longitudinal rod 2411. For example, the connection position between the damping rod 2413 and the longitudinal rod 2411 corresponds to the longitudinal middle and rear section of the seat assembly 2. In some embodiments, the damping rod 2413 is elastic to provide cushioning support to the seat assembly 2. For example, the damping rod 2413 may be a compression spring, torsion spring, cylinder, or other elastic structure.

[0244] The triangular structure of the support frame 241 allows the card holder assembly 200 to be stably mounted on the frame 1000. Figures 6 to 8 The settings are not shown in the image; please refer to the following text for specific instructions. Figures 12 to 15 (as described in the description), and by setting up shock absorber 2413, it is possible to provide a certain degree of cushioning for objects mounted on seat assembly 2 when the frame 1000 is subjected to bumps.

[0245] 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 assembly 2). The shock-absorbing rod 2413 has a better shock-absorbing stroke, thereby providing a better shock-absorbing effect. However, the present invention is not limited to this. In other embodiments, by adjusting the length of the longitudinal rod 2411, the relative position of the connection position between the shock-absorbing rod 2413 and the longitudinal rod 2411 and the seat assembly 2 can be adjusted, thereby adjusting the buffering capacity of the support frame 241. For example, the connection position between the shock-absorbing rod 2413 and the longitudinal rod 2411 may correspond to the central position, the rear end, etc., of the seat assembly 2. Of course, in some embodiments, the buffering capacity of the support frame 241 can also be adjusted by setting the included angle between the connecting rod 2412 and the longitudinal rod 2411, the included angle between the connecting rod 2412 and the shock absorber rod 2413, and / or the included angle between the shock absorber rod 2413 and the longitudinal rod 2411 within a preset range, and by adjusting the length of the connecting rod 2412. In some embodiments, when the shock absorber rod 2413 is a compression spring, the elastic coefficient of the shock absorber rod 2413 can be adjusted to achieve a better shock absorption effect. For example, the elastic coefficient of the shock absorber rod 2413 can be changed by changing parameters such as the spring pitch, diameter, and material of the compression spring. When the shock absorber rod 2413 is a cylinder, a better shock absorption effect can be achieved by changing the pressure of the cylinder.

[0246] In addition, combined Figure 7 and Figure 8 As shown, the longitudinal rod 2411 also includes a limiting finger 2411c, which is located at the first end 2411a of the longitudinal rod 2411 and protrudes (downwards) toward the connecting rod 2412. The limiting finger 2411c is used to limit the downward pivoting angle of the longitudinal rod 2411 relative to the connecting rod 2412. When the wheeled mobility device 1000 travels on a bumpy road surface, the shock absorber 2413 deforms (e.g., shortens or bends) to provide cushioning, causing the longitudinal rod 2411 to pivot downwards relative to the connecting rod 2412. When the limiting finger 2411c located below the longitudinal rod 2411 abuts against the connecting rod 2412, the longitudinal rod 2411 will not continue to pivot downwards (i.e., the angle between the longitudinal rod 2411 and the connecting rod 2412 will not continue to decrease), thereby preventing the longitudinal rod 2411 from tilting too much relative to the horizontal plane, and thus preventing the seat assembly 2 and objects mounted on it from tilting too much, thereby improving safety and driving stability.

[0247] like Figure 8As shown, in some embodiments, the longitudinal rod 2411 may further include a limiting protrusion 2411d, which is disposed at the first end 2411a of the longitudinal rod 2411. The limiting protrusion 2411d and the limiting finger 2411c are located, for example, on opposite sides of the first end 2411a of the longitudinal rod 2411. The limiting protrusion 2411d extends upward, for example. In some embodiments, the limiting protrusion 2411d is located between the longitudinal rod 2411 and the upper housing of the seat assembly 2. The limiting protrusion 2411d is used to limit the upward pivoting angle of the longitudinal rod 2411 relative to the connecting rod 2412. For example, as described above, when the wheeled mobility device 1000 travels on a bumpy road surface, the longitudinal rod 2411 pivots downward or upward relative to the connecting rod 2412 as the shock absorber 2413 deforms or recovers its deformation. When the shock absorber 2413 recovers its deformation, it applies a force to the longitudinal rod 2411, causing the longitudinal rod 2411 to pivot upwards. When the longitudinal rod 2411 pivots upwards, the limiting protrusion 2411d can abut against the structure on the connecting rod 2412, thus preventing the longitudinal rod 2411 and the seat assembly 2 from pivoting upwards too much, which could lead to breakage at the connection between the longitudinal rod 2411 and the connecting rod 2412. Furthermore, at the junction of the seat assembly 2 and the frame 100 (… Figure 8 (Not shown in the image) After being folded up as a whole (please refer to the following text for the specific folding process), Figures 16 to 19 (As described), the user can lift the entire frame structure by pulling the front and rear ends of the seat assembly 2. At this time, the limiting protrusion 2411d can prevent the seat assembly 2 from flipping outward due to the large force applied to the rear end of the seat assembly 2, thereby further improving the safety and structural stability of the wheeled mobility device 1000.

[0248] Combined with reference Figure 9 The illustration schematically shows a support structure 240 according to some embodiments of the present invention.

[0249] In some embodiments, the support structure 240 further includes a crossbar or a U-shaped first connecting rod 242, the first connecting rod 242 connecting between the longitudinal rods 2411 of the two support frames 241. For example, as Figure 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 both ends of the first connecting rod 242. In other embodiments, the support structure 240 further includes a second connecting rod 243, which connects between the connecting rods 2412 of the two support frames 241. In some embodiments, the first connecting rod 242 is connected to or integrally formed with the first ends 2411a of the two longitudinal rods 2411, and the second connecting rod 243 is 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.

[0250] See Figure 10 and Figure 11 The support structure 240 according to other embodiments of the present invention is schematically shown. Figure 10 A perspective view of the support structure 240 is shown, and Figure 11 A plan view of the support structure 240 as viewed from the inside is shown.

[0251] Figure 10 The support structure 240 shown has the same as Figure 9 The support structure 240 shown is similar to the structure that includes two support frames 241, each of which includes a longitudinal rod 2411, a connecting rod 2412, and a shock-absorbing rod 2413. Figure 10 The support structure 240 shown is Figure 9 The main difference of the support structure 240 shown is that the support frame 241 may also include a limiting member 2414.

[0252] Combination Figure 11 As shown, the first end 2414a of the limiting member 2414 is slidably connected to the longitudinal rod 2411, and the second end 2414b of the limiting member 2414 is pivotally connected to the second end 2412b of the connecting rod 2412. In some embodiments, a limiting groove 2414c is provided at the first end 2414a of the limiting member 2414, and a pin 2411e is provided at the middle section of the longitudinal rod 2411. The limiting member 2414 can slide perpendicularly relative to the longitudinal rod 2411 through the cooperation of the limiting groove 2414c and the pin 2411e.

[0253] Optionally, when the support structure 240 is in Figure 11 In the initial state shown, supported by the damping 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 its maximum angle. At this time, the limiting member 2414 is approximately perpendicular to the longitudinal rod 2411 (the limiting member 2414 is, for example, parallel to...). Figure 11 (D3 shown in the vertical direction). When the wheeled mobile device 1000 travels on a bumpy road, the shock absorber 2413 deforms (e.g., shortens or bends) to provide cushioning, causing the longitudinal rod 2411 to pivot downward relative to the connecting rod 2412. At this time, the limiting member 2414 pivots about 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 restricts 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. Thus, it is possible to prevent the longitudinal rod 2411 and the seat plate assembly 2 fixed thereon from being rotated. Figure 11 Not shown, please refer to Figures 6 to 8 The seat assembly 2 in the figure is tilted downwards at an excessive angle relative to the connecting rod 2412. This also prevents the longitudinal rod 2411 and the seat assembly 2 from flipping outwards (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 moves the frame 100 in the folded state by lifting the seat assembly 2. In other words, the limiting member 2414 can further limit the pivoting of the longitudinal rod 2411, and the limiting member 2414 can simultaneously achieve the functions of both the limiting finger 2411c and the limiting protrusion 2411d. Of course, the present invention is not limited to this. In other embodiments, the support structure 240 may only have the limiting member 2414, without the limiting finger 2411c and the limiting protrusion 2411d.

[0254] Reference Figures 12 to 14 The illustration schematically depicts a frame 100 equipped with a card holder assembly 200 according to some embodiments of the present invention. Figure 12 and Figure 13 A perspective view of the frame 100 and the mounting bracket assembly 200 viewed from different angles, and Figure 14 Side view of frame 100 and card holder assembly 200.

[0255] like Figures 12 to 14 As shown, the cassette assembly 200 is mounted on the frame 100 via its support structure 240. The frame 100 is foldable, and the cassette assembly 200 can be folded together with the frame 100. The cassette assembly 200 includes a seat plate assembly 2 and a locking mechanism (in... Figure 12 The locking mechanism (whose specific structure will be described below) is obscured and fixedly mounted on the support structure 240. The seat assembly 2 provides a generally horizontal plane for placing an object (in this embodiment, a carrier 300). See also Figure 15The support structure 240 also includes a first connecting member 244 and a second connecting member 245, which are pivotally connected to the frame 100. Through the arrangement of the first connecting member 244 and the second connecting member 245, the card holder assembly 200 can be folded together with the frame 100. The specific connection method between the support structure 240 and the frame 100, and the mechanism by which the card holder assembly 200 folds together with the frame 100, will be described below.

[0256] Please refer to Figure 15 The illustration schematically shows a frame 100 with a support structure 240 installed according to some embodiments of the present invention, the frame 100 being in an unfolded state. Figure 15 As shown, one end of the first connecting member 244 and one end of the second connecting member 245 are pivotally connected to the second end 2412b of the connecting rod 2412, respectively. The other ends 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 pivotally connected to different rods on the frame 100. Through this connection method of 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 the position for supporting the card holder assembly 200 (for clarity, Figure 15 The structure of the card holder assembly 200, except for the support structure 240, has been removed. When the frame 100 is folded, the support structure 240 can rotate relative to the frame 100 to fold together with the frame 100.

[0257] In some embodiments, such as Figure 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, thereby allowing the support frame 241, together with the entire card holder assembly 200, to pivot with the pivoting of the frame 100, thus achieving overall folding. See also Figure 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 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 pivot point N2. The other end of the second connecting member 245 is pivotally connected to the rear support rod 12 at pivot point N3. The first end 2412a of the connecting rod 2412 is pivotally connected to the front support rod 11 at pivot point N4.

[0258] Reference Figures 16 to 19 The illustration schematically depicts the folding process of a frame 100 equipped with a card holder assembly 200 according to some embodiments of the present invention. Figure 16 and Figure 17 A perspective view and a side view of the frame 100 and the card holder assembly 200 are shown during the folding process of the frame 100. Figure 18 and Figure 19 The front and side views of the frame 100 and the cassette assembly 200 are shown with the frame 100 fully folded down.

[0259] like Figure 16 As shown, the frame 100 of this embodiment is foldable for easy carrying and storage. Specifically, the armrest 14 of the frame 100 is pivotally connected to the upper support rod 13 via a pivot portion 117, allowing it to fold 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 called the pivot point) 118, and can fold relative to each other. Furthermore, when the frame 100 folds, it can also drive the support structure 240 to pivot, thereby allowing the card holder assembly 200 mounted on the support structure 240 to also pivot as the frame 100 folds.

[0260] See Figure 17 The first connecting component 244 of the support structure 240 is pivotally connected to the upper support rod 13 of the frame 100 at pivot point N2, the second connecting component 245 is pivotally connected to the rear support rod 12 at pivot point N3, the connecting rod 2412 is pivotally connected to the front support rod 11 at pivot point N4, and the first connecting component 244, the second connecting component 245, and the connecting rod 2412 are pivotally connected at pivot point N1. Through the aforementioned connections, the first connecting component 244, the second connecting component 245, the upper support rod 13, and the rear support rod 12 form a four-bar linkage mechanism via the pivot part 118 and pivot points N1, N2, and N3. The front support rod 11, the rear support rod 12, the second connecting component 245, and the connecting rod 2412 also form a four-bar linkage mechanism via the pivot part 118 and pivot points N1, N3, and N4. Furthermore, the front support rod 11, the upper support rod 13, the first connecting component 244, and the connecting rod 2412 form a four-bar linkage mechanism via the pivot part 118 and pivot points N1, N2, and N4. This allows the card holder assembly 200 to pivot as the frame 100 is folded, thus being housed within the overall structure of the frame 100 (the fully folded state of the frame 100 is as follows). Figure 19 (As shown).

[0261] Combined Figure 18 and Figure 19When the frame 100 is fully folded, the front support rod 11, rear support rod 12, upper support rod 13, and handlebar 14 are folded to their closest relative positions, with the rear support rod 12 located between the front support rod 11 and the upper support rod 13. The cassette assembly 200 pivots relative to the frame 100 and is housed between the upper support rod 13 and the front support rod 11.

[0262] In addition, such as Figure 18 As shown, the seat assembly 2 may include a handle 29. When the frame 100 and the cassette assembly 200 are fully folded, the handle 29 is located above the folded frame 100, allowing the user to easily grasp the handle 29 to move the frame 100 and the cassette assembly 200.

[0263] Reference Figure 20 and Figure 21 The illustration schematically shows a card holder assembly 200 according to some embodiments of the present invention. Figure 20 and Figure 21 This is a perspective view of the card slot assembly 200, in which... Figure 20 The upper housing of the seat assembly 2 was removed to allow for observation of the locking mechanism 21 located within the seat assembly 2.

[0264] Combination Figure 20 and Figure 21 As can be seen, the locking mechanism 21 is installed inside the seat assembly 2 for locking and unlocking objects (e.g., sleeping boxes) located on the seat assembly 2.

[0265] like Figure 20 As shown, the locking mechanism 21 includes at least one release operation member 212 and at least one locking member 211. The release operation member 212 is disposed on the base plate assembly 2 and is movable relative to the base plate assembly 2 between a locked state (also referred to as a second locked position) and an unlocked state (also referred to as a second unlocked position). The locking member 211 is movable accordingly as the release operation member 212 moves, so as to move accordingly between a locked position (also referred to as a first locked position) and an unlocked position (also referred to as a first unlocked position). In some embodiments, when the release operation member 212 is in such a position as Figure 21 In the locked state, at least a portion of the release operation member 212 protrudes from the base plate assembly 2. When the release operation member 212 is in the locked state, the locking member 211 is in the locked position, locking the object placed on the base plate assembly 2. When the release operation member 212 is pressed and moved inward from the locked state to the unlocked state, the locking member 211 moves to the unlocked position along with the release operation member 212, thereby releasing the object on the base plate assembly 2.

[0266] like Figure 20As shown, in some embodiments, at least one locking member 211 may include a plurality of first locking members 211A, which can be connected by a linkage component 25. The linkage component 25 allows the plurality of first locking members 211 located on the same side (front, rear, left, or right) of the seat assembly 2 to move synchronously. In this embodiment, the plurality of first locking members 211A are simultaneously located on the front side of the seat assembly 2, and the plurality of first locking members 211A may also be referred to as front locking members. In some embodiments, the plurality of first locking members 211A can be rigidly connected (i.e., fixedly connected) to move synchronously in the same direction. Alternatively, in some embodiments, the plurality of first locking members 211A can be connected by a linkage component 25. Figure 20 The linkage components 25 shown are connected and move synchronously in opposite directions. In some embodiments, at least one locking member 211 may further include a plurality of second locking members 211B, which are simultaneously located on the other side of the seat assembly 2, opposite to a plurality of first locking members 211A. In some embodiments, the plurality of second locking members 211B can be connected to each other by another linkage component 25, so that the plurality of locking members 211 located on the other side of the seat 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 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 members 211B is parallel to the movement direction of the first locking members 211A, or it may be said that the second locking members 211B are parallel to the first locking members 211A.

[0267] In other embodiments, at least one locking element 211 may include at least one first locking element 211A and at least one second locking element 211B. The first locking element 211A is disposed on one side (e.g., the front side) of the seat assembly 2 and operably connected to a corresponding release mechanism 212, while the second locking element 211B is disposed on the other side (e.g., the rear side) of the seat assembly 2. The first locking element 211A and the second locking element 211B are connected by a linkage 27, which allows the first locking element 211A and the second locking element 211B to move synchronously.

[0268] Here, the linkage component 25 and the linkage member 27 can be collectively referred to as the linkage device 257. The linkage device 257 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 together with the movement of the release operation member 212, thereby realizing the synchronous release or synchronous locking of multiple locking members 211 on the object.

[0269] For example, such as Figure 20As shown, in some embodiments of this utility model, two release operation members 212 are provided. The two release operation members 212 are respectively located on the lateral sides (i.e., left and right sides) of the base plate assembly 2, and are respectively movable relative to the base plate assembly 2 between their respective locked and unlocked states. Correspondingly, this embodiment also provides two first locking members 211A and two second locking members 211B. The two first locking members 211A are movably disposed on one side of the base plate assembly 2 and connected (e.g., fixedly connected) to the corresponding (e.g., adjacent) release operation members 212. The two second locking members 211B are movably disposed on the other side of the base plate assembly 2, and each second locking member 211B is connected to the corresponding first locking member 211A via a linkage 27.

[0270] In some embodiments, two first locking members 211A may be disposed on the front side of the seat assembly 2 and fixedly connected to an adjacent release operation member 212. Two second locking members 211B are disposed on the rear side of the seat assembly 2 and are respectively connected to the two first locking members 211A via corresponding linkage members 27 to move synchronously with the two first locking members 211A. More specifically, as Figure 20 and Figure 21 As shown, two release operating members 212 are symmetrically arranged on both sides of the base plate assembly 2 with respect to the center line M5-M5, which extends along the longitudinal direction F2 of the base plate assembly 2. Two first locking members 211A are symmetrically arranged between the two release operating members 212 with respect to the center line M5-M5, and each first locking member 211A is fixedly connected to its adjacent release operating member 212.

[0271] See Figure 21 In some embodiments, each locking member 211 moves towards the center line M5-M5 to switch to the unlocking position, and correspondingly, each locking member 211 moves away from the center line M5-M5 to switch to the locking position. That is, the movement directions of the multiple locking members 211 (first locking member 211A and second locking member 211B) located on the same side of the center line M5-M5 are consistent. Of course, in other embodiments, some locking members 211 may move towards the center line M5-M5 to switch to the unlocking position and move away from the center line M5-M5 to switch to the locking position; while other locking members 211 may move away from the center line M5-M5 to switch to the unlocking position and move towards the center line M5-M5 to switch to the locking position. That is, the movement directions of the multiple locking members 211 (first locking member 211A and second locking member 211B) located on the same side of the center line M5-M5 are opposite.

[0272] In some embodiments, such as Figure 20 As shown, the linkage 27 can be a traction member (e.g., a traction rope) 271. Specifically, the traction member 271 can be configured to extend within the seat assembly 2. A first locking member 211A and a second locking member 211B, arranged diagonally relative to the center line M5-M5 of the seat assembly 2, can be connected to each other via the same traction member 271, such that the first locking member 211A and the second locking member 211B connected via the same traction member 271 move in opposite directions. For example, the first locking member 211A located on the left front side is connected to the second locking member 211B located on the right rear side via a traction member 271, and the first locking member 211A located on the right front side is connected to the second locking member 211B located on the left rear side via another traction member 271. Thus, when any of the release operation elements 212 is activated to switch to the release state, the released release operation element 212 causes the corresponding first locking element 211A to move towards the center line M5-M5 to switch to the release position. Under the action of the traction element 271, the first locking element 211A causes the second locking element 211B connected to it (arranged diagonally opposite to the first locking element 211A) to move in the opposite direction, thereby causing the second locking element 211B to also move towards the center line M5-M5 to switch to the release position. When the release operation element 212 is released to switch to the locked state, the first locking element 211A and the second locking element 211B connected by the same traction element 271 both move away from the center line M5-M5 to move synchronously to the locked position.

[0273] Of course, in other embodiments, the movement directions of multiple locking members 211 located on the same side of the centerline M5-M5 may be opposite, for example, and the first locking member 211A and the second locking member 211B located on the same side of the centerline M5-M5 of the seat assembly 2 may be connected by the same traction member 271. When the release operation member 212 is operated to switch to the release 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 centerline M5-M5 to switch to the release position, while the second locking member 211B moves away from the centerline M5-M5 to switch to the release position.

[0274] In this embodiment, the traction member 271 can 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 can also be a flexible component such as a composite material wire.

[0275] like Figure 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. The distance between the linkage assembly 25 located 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 can be formed by connecting four sheet-like strips in pairs (specifically, by hinged connections in pairs). This four-bar linkage mechanism has a component fixed to the base plate assembly 2 (to illustrate the structure of the locking mechanism 21). Figure 20 The fixed pivot point of the upper housing of the seat plate assembly 2 has been removed, and it can extend to both sides (corresponding to the locked state of the release operation member 212) and shorten (corresponding to the unlocked state of the release operation member 212) with the location of the fixed pivot point as the center line.

[0276] See Figure 20 Specifically, the four-bar linkage includes a first link 251, a second link 252, a third link 253, and a fourth link 254. These four links are connected in pairs to form four connection points, corresponding to pivots A1, A2, A3, and A4. One of these connection points is a fixed pivot point (or fixed connection point). More specifically, pivot A1 is fixed to a fixed structure (e.g., seat plate assembly 2) of the card holder assembly 200, thus serving as a fixed pivot point. The third link 253 and the fourth link 254, connected to the central connection point opposite the fixed pivot point (corresponding to pivot A2), are respectively connected to two first locking members 211A or two second locking members 211B via pivots A5 and 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. The linkage assembly 25 is pivotally connected to the first locking members 211A on both sides through 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). The distance between pivot A5 and 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 be found in 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 corresponding settings to the two first locking members 211A.

[0277] Of course, in some embodiments, when the moving direction of the first locking member 211A and the second locking member 211B located on the same side of the center line M5-M5 is parallel to the second direction F2, a linkage component 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.

[0278] With the linkage component 25 as described above, when any unlocking operation member 212 moves from the locked state to the unlocked state, the locking member 211 connected to the corresponding unlocking operation member 212 moves together with the unlocking operation member 212 in the same direction. The position of the pivot A1 of the linkage component 25 remains unchanged, while the pivot A2 moves, and the direction of movement of the pivot A2 is perpendicular to the direction of movement of the locking member 211. That is, the line connecting the fixed connection point and the center connection point is perpendicular to the direction of movement of the two first locking members 211A.

[0279] The locking and unlocking process of the card holder assembly 200, equipped with linkage component 25 and linkage element 27 (e.g., traction element 271), is as follows: When the unlocking operation element 212 is in the locked state, the user can operate either unlocking operation element 212 to move it from the locked state to the unlocked state. The unlocking operation element 212 moving to the unlocked state drives the first locking element 211A connected to it to move. Under the action of linkage component 25, the two first locking elements 211A move synchronously in opposite directions (e.g., move closer to each other) to move towards the unlocked position. Under the action of linkage element 27, the two first locking elements 211A drive the two second locking elements 211B to move in opposite directions (e.g., move closer to each other) to move towards the unlocked position. When the two first locking elements 211A and the two second locking elements 211B move to the unlocked position simultaneously, the object locked by the card holder assembly 200 can be released. Conversely, when the unlocking operation member 212 moves from the unlocked state to the locked state, under the action of the linkage component 25 and the linkage member 27, the two first locking members 211A synchronously move away from each other to the locked position, and the two second locking members 211B also synchronously move away from each other to the locked position. That is, when either of the first locking members 211A moves, it causes the pivots A5 and A6 to move in opposite directions.

[0280] Of course, in other embodiments, when the two first locking members 211A move in the same direction, the two first locking members 211A and / or the two second locking members 211B can also move synchronously in the same direction through other forms of linkage components 25.

[0281] In addition, such as Figure 20As shown, the card holder assembly 200 also includes an elastic device 24, providing a force to drive the release operation member 212 to or return to the locked state, thereby driving the locking member 211 back to the locked position. In some embodiments, the elastic device 24 is disposed between two first locking members 211A, providing a force to drive the two first locking members 211A away from each other, that is, providing a force to move the two first locking members 211A toward the locked position. Optionally, the elastic device 24 may also be disposed between two second locking members 211B, providing a force to drive the two second locking members 211B away from each other, that is, providing a force to move the two second locking members 211B toward the locked position. For example, the elastic device 24 may be a compression spring. In other embodiments, when multiple locking members 211 on the same side move in the same direction to move synchronously to the release position or the locked position, the multiple locking members 211 on the same side may be fixedly connected, which may be in the fixed structure of the card holder assembly 200 (e.g., as shown in the figure). Figure 21 An elastic device 24 is provided between the seat assembly 2) and at least one locking member 211. The elastic device 24 applies a force to the unlocking operation member 212 to move it to the locked state via the locking member 211. The aforementioned 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 (first locking member 211A and second locking member 211B on the right side), or two locking members located on the left side (first locking member 211A and second locking member 211B on the left side). It should be noted that "front side," "rear side," "right side," and "left side" here all refer to... Figure 20 The direction shown, for example, Figure 20 The lower left corresponds to the front side of the card holder assembly 200, and the upper right corresponds to the rear side of the card holder assembly 200, etc.

[0282] In addition, the elastic device 24 may also be provided between at least one locking member 211 and the base plate assembly 2 (e.g., in the case of two first locking members 211A being fixedly connected or two second locking members 211B being fixedly connected) to provide a force through the locking member 211 to drive the release operation member 212 into or back to the locked state.

[0283] like Figure 20As shown, in some embodiments, the two first locking members 211A are respectively fixedly connected to the corresponding release operation members 212 via corresponding sliding members 225. Each sliding member 225 can slide in the groove of the locking mechanism 21, so that when the user performs a release operation on either release operation member 212, the first locking members 211A and the release operation members 212 connected by the same sliding member 225 slide synchronously. Under the action of the linkage component 25, the two first locking members 211A slide towards each other and move to the release position. Of course, in other embodiments, the first locking members 211A and the corresponding release operation members 212 can also be connected in other ways, such as bolt connection, bonding, etc. Optionally, the sliding member 225 can be integrally formed with the corresponding release operation member 212.

[0284] In addition, in some embodiments, please also refer to Figure 20 and Figure 21 One end of the first locking member 211A is provided with a locking part 2111 (shown in the figure). Figure 21 An opening 2011 is provided on the seat assembly 2 at a position corresponding to the locking part 2111. When the upper housing of the seat assembly 2 is mounted above the locking mechanism 21, the locking part 2111 can protrude from the opening of the seat assembly 2. For example, the front side of the seat assembly 2 has an upward protruding structure corresponding to the position of each first locking member 211A. An engaging channel (also called a recess) 22 is provided at the end of each first locking member 211A. The engaging channel 22 extends through the upward protruding structure in the second direction F2 to accommodate at least a portion of an object. The position of the engaging channel 22 corresponds to the engaging point described above. The channel wall of the engaging channel 22 has an opening 2011 to allow the locking part 2111 to protrude from the seat assembly 2. The rear side of the seat 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 engagement channel 22 accommodates at least a portion of the object (e.g., a sleeping box support assembly, more specifically, the engagement member 311), and the locking part 2111 protrudes from the opening 2011 and locks that portion of the object in the engagement channel 22. In some embodiments, such as Figure 21 As shown, the locking part 2111 is inclined downward from the upper surface of the protruding part of the opening, so that the locking part of the object can move along the inclined surface to enter the engagement channel 22.

[0285] In addition, such as Figure 21 As shown, the protruding upper housing structure of the seat assembly 2 is also provided with a ramp 213, which is located above the engagement channel 22 and on the side opposite to the opening 2011 of the engagement channel 22, to guide the object (not shown) to lock with the seat assembly 200.

[0286] Reference Figures 22 to 23 This illustrates the locked and unlocked states of the locking mechanism 21 according to some embodiments of the present invention. Specifically, Figure 22 It shows along Figure 21 The cross-sectional view taken by line B2-B2 shows the locking mechanism 21 in the locked position. Figure 23 It shows from Figure 22 The locking mechanism 21, shown in the diagram, switches from the locked position to the unlocked position.

[0287] like Figure 22 As shown, when the locking mechanism 21 is in the locked state, each release operation member 212 is in the locked state (also referred to as the initial state), and each first locking member 211A fixedly connected to the corresponding release operation member 212 is in its locked position. That is, the locking part 2111 of each first locking member 211A extends from the base plate assembly 2 into the corresponding engagement channel 22. At the same time, each second locking member 211B is also held in its locked position. At this time, the first locking members 211A and the second locking members 211B lock the object on the front and rear sides of the base plate assembly 2, respectively. At this time, the elastic device 24 located between the two first locking members 211A is in the initial state (e.g., the stretched state), and optionally, the elastic device (not shown) located between the two second locking members 211B is also in the initial state (e.g., the stretched state). In some embodiments, the pivot A2 of the four-bar linkage mechanism of the linkage assembly 25 is located as follows: Figure 22 The position shown is near the top, that is, near pivot A1.

[0288] like Figure 23 As shown, when any of the unlocking operation components 212 is operated to move from the locked state to the unlocked state, the first locking component 211A, which is fixedly connected to the unlocking operation component 212, moves towards the unlocked position as the unlocking operation component 212 moves. Simultaneously, the linkage component 25 drives another first locking component 211A and the unlocking operation component 212 to move synchronously, and each linkage component 27 (in this embodiment, a traction component 271) drives its corresponding second locking component 211B (… Figure 23 (Not shown in the image) moves synchronously. The locking portions 2111 of the two first locking members 211A and the locking portions of the two second locking members 211B (… Figure 23 (Not shown) retracts into the seat plate assembly 2, thereby releasing the object. At this time, the elastic device 24 located between the two first locking members 211A is in a state tending to restore the release operation member 212 to the locked state (e.g., a compressed state). Optionally, the elastic device (not shown) located between the two second locking members 211B is also in a compressed state. In some embodiments, the pivot A2 of the four-bar linkage of the linkage assembly 25 is located as shown in the figure. Figure 23The lower position shown is the position away from pivot A1. That is, when the release operation member 212 moves from the locked state to the released state, the pivot A2 of the linkage assembly 25 moves downward approximately vertically relative to pivot A1.

[0289] When the release operation 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, causing the two release operation 212 to synchronously return from their respective released state to the locked state, and at the same time causing the two second locking members 211B to move away from each other, thereby causing the locking mechanism 21 to return to the locked state. Figure 22 The locked state is shown. In other embodiments, when the release operation 212 is released, under the action of the elastic device between the two second locking members 211B (not shown), the two second locking members 211B move away from each other, causing the two first locking members 211A to move away from each other, and at the same time causing each release operation 212 to return from its respective release state to the locked state, thereby causing the locking mechanism 21 to return to the locked state as shown. Figure 22 The locked state is shown.

[0290] Reference Figure 24 The illustration shows a wheeled mobility device 1000 according to some embodiments of the present invention, wherein the housing of the carrier 300 has been removed to show the connection between the support device 310 of the carrier 300 and the locking mechanism 21. The carrier 300 may be, but is not limited to, a sleeping box.

[0291] like Figure 24 As shown, when the carrier 300 is mounted on the seat assembly 2 via the locking mechanism 21 (with the release operation 212 in the locked state), the engaging member 311 of the third bracket 313 (e.g., Figure 24 The ring-shaped structural member shown is locked in the space defined by the engagement channel 22 and the locking part 2111, thereby locking the carrier 300 onto the seat assembly 2.

[0292] Further reference Figures 25 to 26 The illustration schematically shows a locking mechanism 21 and a carrier 30 placed thereon, according to some embodiments of the present invention. Figure 25 The view shown depicts the vehicle 300 mounted on the seat assembly 2 and locked by the locking mechanism 21. Figure 26 The view shows the vehicle 300 placed on the seat assembly 2 with the locking mechanism 21 in the unlocked state.

[0293] like Figure 25 As shown, when the locking mechanism 21 is in the locked state, the locking part 2111 of the first locking member 211A protrudes from the opening 2011 at the engagement channel 22 of the seat plate assembly 2, locking the engagement member 311 of the carrier 300 in the engagement channel 22.

[0294] like Figure 26 As shown, when the locking mechanism 21 returns from the locked state to the unlocked state, the locking part 2111 retracts into the seat plate assembly 2 (e.g., the opening 2011 at the engagement channel 22), at which time the engagement member 311 of the vehicle 30 can be removed from the engagement channel 22, and the vehicle 30 can be taken off.

[0295] Reference Figures 27 to 28 The illustration shows a card holder assembly 200 according to other embodiments of the present invention, wherein the upper housing of the seat plate assembly 2 is removed to show the locking mechanism 21.

[0296] In other embodiments of this utility model, such as Figure 27 As shown, the linkage 27 may include at least one link 272. Specifically, each link 272 may connect two locking members 211 located on the front and rear sides of the card holder assembly 200, particularly a first locking member 211A and a second locking member 211B arranged diagonally. In some examples, the two ends of the two links 272 are pivotally connected to the first locking member 211A and the second locking member 211B located diagonally, respectively, and the two links 272 are arranged crosswise, forming an included angle θ between the two links 272. In some embodiments, the two links 272 are connected at their intersection. More specifically, the two links 272 are connected at their intersection by a pivot 2721 ( Figure 29 Pivotal connection. The included angle θ corresponds to the included angle defined by the connection point of the two links 272 and the two second locking members 211B relative to the intersection of the two links 272. It can be understood that the included angle θ also corresponds to the included angle defined by the connection point of the two links 272 and the two first locking members 211A relative to the intersection of the two links 272.

[0297] When either of the release mechanisms 212 is activated, the two first locking members 211A move synchronously towards each other and closer together under the action of the linkage assembly 25. The two first locking members 211A also move synchronously from the locked position to the unlocked position, causing the included angle θ between the two links 272 to gradually decrease. The two links 272 then drive the two second locking members 211B to move towards each other and closer together. When the release mechanism 212 is released, the two first locking members 211A move synchronously away from each other and from the unlocked position to the locked position. The included angle θ between the two intersecting links 272 gradually increases, causing the two second locking members 211B to similarly move away from each other.

[0298] Combination Figure 28 As can be seen, in some embodiments, the two ends of each link 272 are pivotally connected from the bottom to the corresponding first locking member 211A and second locking member 211B, respectively.

[0299] Reference Figure 29 The illustration schematically shows a card holder assembly 200 provided with a retaining mechanism 23 according to some embodiments of the present invention, wherein the upper housing of the seat plate assembly 2 is removed to show the retaining mechanism 23. Figure 29 As shown, the card holder assembly 200 of this utility model also includes a retaining mechanism 23, which is disposed between the two first locking members 211A and / or the two second locking members 211B, for holding the release operation member 212 in the released state. That is, the retaining mechanism 23 is used to hold the card holder assembly 200 in the released state and to hold the locking members 211 in the released position. In this way, the user does not need to continuously perform a release operation on the release operation member 212 (e.g., press the release operation member 212) to keep the card holder assembly 200 in the released state, so that the user can remove the object on the card holder assembly 200 at any time.

[0300] It should be noted that, although in Figure 29 Only the embodiment showing the connection of the corresponding first locking member 211A and second locking member 211B using the connecting rod 272 is illustrated. However, it should be understood that the retaining mechanism 23 is also applicable to the case where the corresponding first locking member 211A and second locking member 211B are connected by the traction member 271 (e.g., Figure 20 (The example shown).

[0301] Please refer to the above as well. Figure 29 and Figure 30 ,in Figure 30 schematically showing along Figure 29 The cross-sectional view of the retaining mechanism 23, taken along section line B3-B3, shows the structural relationship between the retaining mechanism 23 and the seat plate assembly 2. (See diagram below.) Figure 29 As shown, the retaining mechanism 23 includes a touch button 2051, a latching part 2052, and a reset member 2055. Figure 29 The middle is obscured and not shown, shown in Figure 30 (Middle). The touch button 2051 is located on the base plate assembly 2 ( Figure 29 Only the lower housing of the base plate assembly 2 is shown in the diagram. It is movable vertically relative to the base plate assembly 2 to allow at least a portion of the actuation button 2051 relative to the base plate assembly 2 (specifically its upper housing, see reference 2051). Figure 30 The latching part 2052 protrudes upwards. It is movably disposed below the touch button 2051 and can move vertically along the slide rail 2054 on the touch button 2051. For example, the latching part 2052 can be a locking pin. Figure 30As shown, a reset member 2055 is disposed between the fixing structure of the card holder assembly 200 (e.g., the lower housing of the base plate assembly 2) and the touch button 2051. The reset member 2055 provides a force that drives the touch button 2051 to protrude upward from the base 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.

[0302] Please refer to Figure 30 In some embodiments, the retaining mechanism 23 further includes an elastic element 2053 disposed between the touch button 2051 and the latching portion 2052, for cooperating with the movement of the latching portion 2052 relative to the touch button 2051. Furthermore, a retaining hook 2102 is provided on the lower portion of the first locking member 211A away from the locking portion 2111, so as to correspondingly hook the latching portion 2052 of the retaining mechanism 23. The end of the retaining hook 2102 may also be chamfered for a more secure engagement with the latching portion 2052.

[0303] In addition, such as Figure 30 As shown, when the carrier is not placed on the seat assembly 2 and the release operation 212 has not been performed, the release operation 212 is in the locked state (i.e., the initial state), and the holding mechanism 23 is also in its initial state. At this time, the touch button 2051 of the holding mechanism 23 protrudes from the top of the seat assembly 2, the latch 2052 is separated from the holding hook 2102 of the first locking member 211A, and the reset member 2055 and the elastic member 2053 are both in the released state, i.e., not compressed.

[0304] Combined with reference Figure 31 and Figure 32 It schematically illustrates the operation of the holding mechanism 23 when the carrier 300 is placed on the seat assembly 2 and it is necessary to move the carrier 300 away.

[0305] like Figure 31 As shown, when the user places the carrier 300 onto the seat assembly 2, the engaging member 311 of the carrier 300 moves downward and is engaged in the engaging channel 22 by the locking part 2111 of the first locking member 211A. Simultaneously, the bottom surface of the carrier 300 presses down on the actuation button 2051, compressing the reset member 2055. The latching part 2052 and the elastic member 2053 connecting the actuation button 2051 and the latching part 2052 move downward as the actuation button 2051 is pressed down. At this time, the holding mechanism 23 is in a ready state.

[0306] When it is necessary to remove the vehicle 300 from the seat assembly 2, such as Figure 32As shown, the user can operate (e.g., press) the release mechanism 212. The first locking member 211A, connected to the release mechanism 212, moves towards the release position as the release mechanism 212 moves. The retaining hook 2102 of the first locking member 211A moves towards the retaining mechanism 23 and hooks the latching portion 2052. More specifically, as the retaining hook 2102 moves towards the retaining mechanism 23, the end of the retaining hook 2102 (e.g., through its chamfer) causes the latching portion 2052 to move upward relative to the touch button 2051 against the force of the elastic member 2053 (i.e., the latching portion 2052 moves upward relative to the touch button 2051, compressing the elastic member 2053). After the hook-shaped portion of the retaining hook 2102 passes the latching portion 2052, the latching portion 2052 moves downward under the action of the elastic member 2053 and is hooked by the retaining hook 2102. At this time, the holding mechanism 23 is in the holding state, and the latching part 2052 is maintained in the state of being engaged by the holding hook 2102 under the downward pressure applied by the carrier 300 and the action of the elastic member 2053, thereby keeping the release operation member 212 in the release state, and the engaging part 311 of the carrier 300 is not blocked by the locking part 2111 (that is, the carrier 300 continues to be in a state that can be moved).

[0307] Next, when the carrier 300 is removed, the touch button 2051 protrudes again from above the seat assembly 2 under the action of the reset member 2055. The latch 2052 moves upward with the touch button 2051 and separates from the retaining hook 2102 of the first locking member 211A. The release operation member 212 returns to the position as shown. Figure 30 The locked state is shown.

[0308] Reference Figure 33 This illustrates the structure of the retaining mechanism 23 according to some embodiments of the present invention.

[0309] like Figure 33 As shown, the touch button 2051 is located inside the slide 2104 provided inside the seat assembly 2, so that it can move up and down along the slide 2104. Notches 2105 are symmetrically provided on the wall of the slide 2104, and the retaining hook 2102 can be inserted into the notch 2105 to engage with the latching part 2052 when it moves towards the retaining mechanism 23.

[0310] In addition, such as Figure 33 As shown, in some embodiments, when the vehicle 300 (in conjunction with Figure 31 and Figure 32When the carrier 300 (as shown) is installed on the seat assembly 2, the locking part 2111 retracts and moves inward a distance L1. The distance required for the retaining hook 2102 to engage with the latching part 2052 (i.e., the distance from the farthest end of the retaining hook 2102 to the latching part 2052) is L2. The distance for the release operation member 212 to be pressed to release the lock is L3. In some embodiments, L1 < L2 < L3, thus ensuring that the carrier 300 ( Figure 33 Not shown in the image, please refer to [link / reference]. Figure 31 When locked on the seat assembly 2, the retaining hook 2102 will not hook the latch 2052, but will only hook the latch 2052 when the release operation member 212 is pressed.

[0311] The card holder assembly 200, by providing a linkage assembly 25 between multiple first locking members 211A, a linkage assembly 27 between the first locking members 211A and the second locking members 211B, and a retaining mechanism 23, allows the user to simultaneously unlock multiple locking members 211 by operating only one of the unlocking operation members 212. This provides a convenient and simple wheeled mobility device 1000, enabling the user to easily (e.g., with one hand) move the vehicle 300 away from the frame 100, thus providing a better user experience. Optionally, by providing a shock-absorbing support frame 240, a more comfortable and safer wheeled mobility device can be provided for the vehicle 300 mounted on the frame 100 and any infants or pets inside, when the frame 100 moves.

[0312] Second Embodiment

[0313] refer to Figure 34 , Figure 34 A perspective view of a wheeled mobile device 1000 according to an embodiment of the present invention is shown.

[0314] like Figure 34 As shown, the wheeled mobility device 1000 may include a frame 100, a pedestal assembly 200, and a carrier 300. The pedestal assembly 200 may be mounted on the frame 100, and the carrier 300 may be secured to the frame 100 via the pedestal assembly 200 for movement with the frame 100. In some embodiments, the carrier 300 may include a housing 340 and a support device 310. The housing 340 provides a storage space for carrying infants or pets. The support device 310 is mounted on the housing 340 to support the housing 340. The support device 310 can engage with the pedestal assembly 200 to allow the carrier 300 to be detachably mounted on the frame 100 via the support device 310.

[0315] The following text will describe in detail the frame 100 and the mounting bracket assembly 200 of the wheeled mobile device 1000 and the connection between them.

[0316] First, refer to Figure 35 and Figure 36 , Figure 35 A perspective view of a vehicle frame 100 according to some embodiments of the present invention is shown, and Figure 36 Show Figure 35 A three-dimensional schematic diagram of the frame 100 from another angle.

[0317] The frame 100 of this utility model 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 handlebar 14.

[0318] In some embodiments, such as Figure 35 and Figure 36 As shown, one end of the front support rod 11, one end of the rear support rod 12, and one end of the upper support rod 13 are pivotally connected to each other at a pivot point (also referred to as the first pivot point) 118, allowing the front support rod 11, rear support rod 12, and upper support rod 13 to fold relative to each other through the pivot point 118. Specifically, the front support rod 11 may have a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connecting the two rods 111. The rear support rod 12 may include two parallel rods 121 and a rear crossbar 122 connecting the two rods 121. The upper ends of each rod 111 of the front support rod 11 are pivotally connected to the upper ends of each rod 121 of the rear support rod 12 through the pivot point 118. At least one front wheel 191 is connected to the lower side of the front support rod 11. The lower ends of the two rods 122 of the rear support rod 12 are respectively connected to the corresponding rear wheels 192. The handrail 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 part (also called a second pivot part) 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, etc.

[0319] In some embodiments, such as Figure 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 mobility device 1000 more stable.

[0320] In addition, combined Figure 34 and Figure 35As can be seen, the frame 100 is also provided with a connecting component 15 (which can serve as a support structure for the card holder assembly 200, as will be described in detail below) for mounting the card holder assembly 200 onto the frame 100. The connecting component 15 is pivotally connected to the frame 100, and the card holder assembly 200 can pivot as the frame 100 is folded down via the connecting component 15. The connecting component 15 can be unfolded or folded down.

[0321] Referring to the description in the first embodiment above, when the wheeled mobile device 1000 is fully deployed, the first direction F1 corresponds to the left-right direction, and the second direction F2 corresponds to the front-back direction.

[0322] In some embodiments, such as Figure 35 and Figure 36 As shown, the connecting component 15 may include a first connecting member 151, an auxiliary support member 152, and a linkage member 153.

[0323] like Figure 35 As shown, one end (front end) of the first connecting member 151 is pivotally connected to the front support rod 11 at the first pivot point O1. The auxiliary support member 152 is pivotally connected 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 pivotally connected to the rear support rod 12 at the third pivot point O3. One end (upper end) of the linkage member 153 is pivotally connected to the upper support rod 13 at the fourth pivot point O4, and the other end (lower end) of the linkage member 153 is pivotally connected 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 pivoted. 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 may coincide with the second pivot point O2.

[0324] refer to Figure 36 In some embodiments, the linkage 153 may have an approximately S-shaped structure to avoid interfering with the rear support rod 12 and the seat plate assembly 2 of the bracket assembly 200 when the frame 100 is folded down. Figure 36 Not shown in the image, see [link / reference]. Figure 37Interference with other components may occur. Specifically, the S-shaped structure of the linkage 153 forms a clearance structure. The approximate S-shaped structure sequentially comprises a first segment 15311, a second segment 15312, and a third segment 15313. The second segment 15312 is approximately perpendicular to the first segment 15311, and the third segment 15313 is approximately perpendicular to the second segment 15312. When the frame 100 is unfolded, the first segment 15311 approximately overlaps with the upper support rod 13. Of course, this invention is not limited to this; the linkage 153 can also be designed with other shapes or structures that can avoid interference with other components when folded. Furthermore, by adjusting other components to ensure that multiple rods or components do not interfere with each other when folded, the linkage 153 can also be configured as a straight rod.

[0325] See Figure 35 In some embodiments, the first connecting member 151 includes two first tubes 1511 located on the left and right sides, with one end of each first tube 1511 connected to a member 111 of the front support rod 11 on each side. The auxiliary support member 152 may have a generally U-shaped structure, with both ends of the auxiliary support member 152 connected to the other end of the first tube 1511 of the corresponding first connecting member 151. In some embodiments, the auxiliary support member 152 includes two separate straight members 1521, with each member 1521 connecting the first tube 1511 on the same side (left or rear) to a member 121. Of course, the present invention is not limited thereto.

[0326] In some embodiments, such as Figure 35 and Figure 36 As shown, when the frame 100 is deployed, the first connecting member 151 and the auxiliary support member 152 are horizontally arranged and extend in the front-rear direction (second direction F2). More specifically, the respective first tubes 1511 of the first connecting member 151 and the tubes of the adjacent auxiliary support member 152 (hereinafter referred to as second tubes) extend in the front-rear 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 in a straight line.

[0327] refer to Figure 37 and Figure 38 , Figure 37 A perspective view of a card holder assembly 200 according to an embodiment of the present invention is shown, and Figure 38 Show Figure 37 The diagram shows a perspective view of the card holder assembly 200 after the seat plate assembly 2 has been removed.

[0328] like Figure 37 and Figure 38As shown, the card holder assembly 200 includes a seat plate assembly 2 and a mechanism for mounting a carrier 300 ( Figure 37 and Figure 38 Not shown in the image, see [link / reference]. Figure 34 A locking mechanism 21 is locked onto the seat assembly 2. The seat assembly 200 may have multiple engagement 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 engagement point is equipped with a locking element 211. In some embodiments, the multiple engagement points are arranged in a rectangular array on the seat assembly 2, whereby the multiple engagement points are arranged in at least two rows and at least two columns. For example, as... Figure 37 As shown, multiple engagement points can be symmetrically (left-right symmetrically) arranged on the card holder assembly 200 along the longitudinal center line M5-M5, so that the carrier 300 is more stably locked onto the seat plate assembly 2 of the card holder assembly 200. Preferably, four engagement points can be provided, and the four engagement points are symmetrically arranged on the card holder assembly 200. That is, the four engagement points are arranged symmetrically left-right and front-back on the card holder assembly 200.

[0329] Where there is no conflict, the structure of the card holder assembly 200 can be referred to the description of the card holder assembly 200 in the first embodiment above. See also Figure 37 and Figure 38 Specifically, in this embodiment, the locking mechanism 21 includes multiple locking elements 211, which can be connected by a linkage device to move synchronously to the unlocking position. The linkage device can be referred to the description in the first embodiment, and for example includes a linkage component 25 and a linkage element (…). Figure 38 (Not shown in the image). A release operation member 212 can also be installed on the base plate assembly 2. The release operation member 212 is used to connect with at least one locking member 211 and to drive the locking member 211 to move to the release position. The card holder assembly 200 may also include an elastic device 24, which 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, namely 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 base plate assembly 2, and a linkage component 25 can be provided between the two first locking members 211A. The two second locking members 211B are located on the rear side of the base plate assembly 2, and a linkage component 25 can be provided between the two second locking members 211B. The structure of the linkage component 25 can be referred to the description in the first embodiment. The first locking members 211A and the second locking members 211B located diagonally can be connected by the linkage component 27 in the first embodiment.

[0330] In this embodiment, two release operation components 212 are installed on the base plate assembly 2, and the two release operation components 212 are respectively drivenly connected to two first locking components 211A. When any release operation component 212 is pressed down, under the action of the linkage device, the two first locking components 211A and the two second locking components 211B slide synchronously in the left and right directions, and move towards the release position.

[0331] In some embodiments, the linkage device may omit the linkage component and retain each linkage component 25. In some embodiments, the first locking component 211A and the second locking component 211B are not linked, and the first locking component 211A and the second locking component 211B may be driven to the release position by different release operation components 212.

[0332] In some embodiments, such as Figure 37 As shown, the seat assembly 2 may have a first extension 21011. The first extension 21011 extends from one end of the seat assembly 2 (e.g., the rear end, combined with...) Figure 34 and Figure 35 As shown, it extends from the end near the rear wheel 192. More specifically, the first extension 21011 can extend rearward from the center of the rear end of the seat assembly 2 to provide a larger support surface, thereby providing more stable support for the vehicle 300 disposed above it. Figure 37 (Not shown in the image). It should be noted that the "rear end" referred to here is the rear side relative to the frame 100 (e.g., the rear wheel 192 is located at the rear of the frame 100). The front, rear, left, and right sides of the seat assembly 2 correspond to the front, rear, left, and right sides of the frame 100. In some embodiments, the first extension 21011 may also be configured as a carrying handle to facilitate lifting and moving the folded frame 100 and the card holder assembly 200. In some embodiments, the seat assembly 2 may also be configured as a hollowed-out form, for example... Figure 37 The ring-shaped structure shown (i.e., the middle area of ​​the seat assembly 2 is hollowed out) allows the entire frame structure to be gripped, lifted, or moved by the hollow design of the seat assembly 2 when the frame 100 and the cassette assembly 200 are folded together (see, for example, [reference needed]). Figure 48 ).

[0333] like Figure 37 As shown, in some embodiments, the seat assembly 2 may also have a second extension 21012. The second extension 21012 extends from the front end of the seat assembly 2 (i.e., the end near the front wheel 191) to provide additional support surface, thereby helping to improve the stability of the vehicle 300 on the frame 100 and to help balance the vehicle 300 after it is engaged with the entire frame 100.

[0334] In some embodiments, such as Figure 37 and Figure 38As shown, the card holder assembly 200 can be mounted on the seat plate support 2031 and connected to the frame 100 via the seat plate support 2031 (see...). Figure 34 In some embodiments, such as Figure 38 As shown, the seat support 2031 can have a U-shaped structure, but this utility model is not limited to this. The connection between the seat support 2031 and the frame 100 will be discussed below. Figure 39 and Figure 40 Provide a detailed description.

[0335] refer to Figure 39 and Figure 40 , Figure 39 Show Figure 35 A perspective view of the frame 100 and the seat support 2031 mounted on the frame 100, and... Figure 40 Show Figure 39 A perspective view of the frame 100 and seat support 2031 from another angle.

[0336] In some embodiments, such as Figure 39 and Figure 40 As shown, the seat support 2031 is disposed inside the auxiliary support 152 and connected to the auxiliary support 152, so that the seat support 2031 can move synchronously with the auxiliary support 152, thereby driving the card holder assembly 200 mounted on the seat support 2031. Figure 39 and Figure 40 Not shown in the image, please refer to [link / reference]. Figure 41 The cradle assembly 200 and the frame 100 are folded and retracted synchronously. In some embodiments, the other end of the first connecting member 151 is inserted between the seat support member 2031 and the auxiliary support member 152. For example, the auxiliary support member 152 and the seat support member 2031 are connected to each other at the second pivot point O2 by a pivot passing through the first connecting member 151, and the auxiliary support member 152 and the seat support member 2031 are disposed on both sides of the first connecting member 151, so that the auxiliary support member 152 and the seat support member 2031 can pivot synchronously relative to the first connecting member 151. In addition, the other end of the linkage member 153 (i.e., the end of the linkage member 153 connected to the auxiliary support member 152) is inserted between the seat support member 2031 and the auxiliary support member 152. In some embodiments, the auxiliary support member 152 may be fixedly connected to the seat support member 2031, or the two may be integrally formed. In other embodiments, both the auxiliary support 152 and the seat plate support 2031 can be connected to the card holder assembly 200.

[0337] It should be noted that in the above embodiments, the fixedly connected auxiliary support 152 and the seat plate support 2031 can be regarded as a second connecting member in combination. However, it should be understood that the second connecting member may also include only the auxiliary support 152, which may have a U-shaped structure.

[0338] Further reference Figures 41 to 44 , Figure 41 This is a perspective view of the frame 100 and the card holder assembly 200 mounted on the frame 100 according to the present invention. Figure 42 Show Figure 41 Another perspective view of the frame 100 and the card holder assembly 200 shown. Figure 43 Show Figure 34 The side view of the wheeled mobile vehicle 1000 shown, and Figure 44 Show Figure 43 The wheeled mobile vehicle 1000 shown is a front view after vehicle 300 has been removed.

[0339] like Figure 41 and Figure 42 As shown, when the frame 100 is unfolded, the card holder assembly 200 of this invention can be positioned at a lower position on the frame 100. In some embodiments, the card holder assembly 200 is positioned at a height below the pivot portion 118. For example, the card holder assembly 200 may be close to the lower end of the rod 111 of the front support rod 11, or the card holder assembly 200 may be at approximately the same height as the lower end of the rod 111 of the front support rod 11. More specifically, in conjunction with Figure 43 As shown, the height H1 of the location of the card holder assembly 200 can be less than the median of the overall height H2 of the frame 100. In some embodiments, the height H1 of the location of the card holder assembly 200 can be close to or even less than one-third of the overall height H2 of the frame 100. With this arrangement, i.e., the card holder assembly 200 is positioned at a lower position on the frame 100, the user can more conveniently and effortlessly load the vehicle 300 (see...) Figure 34 The frame 100 is placed on and positioned on the card holder assembly 200, improving ease of use and user experience. Moreover, the frame 100 can be adapted to a wider range of vehicles 300 of different sizes (e.g., different heights), thereby enhancing usability.

[0340] In some embodiments, such as Figure 41 and Figure 42 As shown, the center of gravity G of the lower-positioned bracket assembly 200 can be shifted relative to the pivot 118 towards the rear wheel 192, which helps to improve the stability of the frame 100. Specifically, when the vehicle 300 (see...) Figure 43After being installed on the frame 100, because the center of gravity G of the seat assembly 200 is further rearward relative to the pivot 118, the wheeled mobility device 1000 is less likely to tip over due to the pet inside the vehicle 300 moving towards the front of the vehicle 300 (where the pet's weight is concentrated at the front of the vehicle 300). The rearward position of the center of gravity G of the seat assembly 200 relative to the pivot 118 helps improve the overall structural stability of the wheeled mobility device 1000. For example, in some embodiments, the center of gravity G of the seat assembly 200 may be close to the plane containing the two rods 121 of the rear support rod 12, or the center of gravity G of the seat assembly 200 may be located within the plane containing the two rods 121 of the rear support rod 12.

[0341] like Figure 43 and Figure 44 As shown, when the frame 100 is unfolded, the horizontal distance L5 between the rear wheel 192 and the far end of the frame 100 (e.g., at the handlebar 14) is less than the horizontal distance L4 between the front wheel 191 and the rear wheel 192. Additionally, the width W3 between the two side support rods (e.g., the upper support rod 13) can be greater 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 less than the distance W2 between the two rear wheels 192.

[0342] Figures 45 to 48 The diagram schematically illustrates the folding process of the frame 100 and the card holder assembly 200. Among them, Figure 45 Show Figure 41 The side view of the frame 100 and the card holder assembly 200 when fully extended is shown. Figure 46 Show Figure 45 The side view of the frame 100 and the card holder assembly 200 during folding is shown. Figure 47 Show Figure 45 The side view of the frame 100 and the card holder assembly 200 when fully folded, and Figure 48 Show Figure 47 The front view of the frame 100 and the card holder assembly 200 shown.

[0343] Combination Figure 45 and Figure 47As shown, the frame 100 of this 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 via a pivot part 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 part 118 and can be folded relative to each other. In addition, when the frame 100 is folded, the seat assembly 200 can also be pivoted via the connecting component 15. Specifically, in some embodiments, when the front support rod 11, the rear support rod 12, and the upper support rod 13 are folded relative to each other, the linkage 153 is driven and then the auxiliary support member 152 is driven to pivot, so that the seat support member 2031 fixedly connected to the auxiliary support member 152 and the seat assembly 200 mounted on the seat support member 2031 can also pivot with the folding of the frame 100.

[0344] In some embodiments, when the frame 100 is folded down, the front support rod 11, the rear support rod 12, and the upper support rod 13 move closer together, and the connecting assembly 15 causes the rear end of the cassette assembly 200 (e.g., one end where the first extension 21011 is located, i.e., the end of the cassette assembly 200 near the rear wheel 192 or the rear support rod 12) to pivot toward the pivot portion 118. More specifically, as Figure 46 and Figure 47 As shown, as the front support rod 11, rear support rod 12, and upper support rod 13 fold relative to each other, the upper support rod 13 drives the linkage 153 to pivot, while the front support rod 11 drives the first connecting member 151 to pivot. 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 it to pivot, causing the longitudinal rear end of the seat plate support member 2031 and the card holder assembly 200 mounted thereon to pivot towards the pivoting part 118 (upward pivoting), while the longitudinal front end of the card holder assembly 200 pivots downward. Figure 46 As can be observed, the cassette assembly 200 folds down by pivoting with its upper surface facing the front of the frame 100. The cassette assembly 200 is thus housed within the overall structure of the frame 100 as the frame 100 folds down. Figure 47 The frame 100 is shown in its fully folded state.

[0345] refer to Figure 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 their closest relative positions, and the cassette assembly 200 is housed between the front support rod 11 and the upper support rod 13 as the frame 100 pivots.

[0346] Third Embodiment

[0347] Figure 49A perspective view of a wheeled mobility device 1000 according to some embodiments of the present invention is shown. The wheeled mobility device 1000 may include a frame 100 and a mounting bracket assembly 200. In some embodiments, the wheeled mobility device 1000 may further include a carrier 300. Figure 49 In the illustrated embodiment, the wheeled mobility device 1000 is exemplarily described using a stroller as an example. Depending on the type of carrier 300, the stroller can be a children's stroller, a pet stroller, a shopping cart, etc. Of course, in some alternative embodiments, the wheeled mobility device 1000 can also be other types of products.

[0348] See Figure 50 and Figure 51 The structure of the frame 100 shown is, in some embodiments, generally symmetrical from left to right. The frame 100 may include, for example, a front support rod 11, a rear support rod 12, an upper support rod 13, a handlebar 14, and a connecting assembly 15. The frame 100 is foldable to have an unfolded state. Figure 50 ) and folded status ( Figure 53 ).

[0349] See Figure 50 The front support rod 11, for example, has a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connecting the two rods 111. The first crossbar 101 extends along a first direction F1, which corresponds to the left and right direction. At least one front wheel seat 193 is installed at the bottom of the front support rod 11. In this embodiment, two front wheel seats 193 are installed at the bottom of the front support rod 11, and the two front wheel seats 193 are arranged at intervals in the left and right direction. Each front wheel seat 193 is used to install a front wheel 191, which can be a swivel wheel or a non-swivel wheel. Of course, in some alternative embodiments, the front support rod 11 can also have other implementation methods, such as 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 rod 11.

[0350] The rear support rod 12 has a U-shaped structure, including two rods 121 on the left and right sides and a rear crossbar 122 connecting the two rods 121. The upper end of each rod 121 is pivotally connected to the upper end of each rod 111 of the front support rod 11 on the same side via a pivot part 118. The rear support rod 12 is equipped with two rear wheel seats 194, which are spaced apart in the left-right direction. Each rear wheel seat 194 is used to install a rear wheel 192, which can be a swivel wheel or a non-swivel wheel. In this embodiment, the size of the rear wheel 192 is larger than that of the front wheel 191 to make the overall structure of the wheeled moving device 1000 more stable. Of course, in some alternative embodiments, the size of the rear wheel 192 can be the same as that of the front wheel 191.

[0351] The upper support rod 13 includes two rods 131 located on the left and right sides. The lower ends of each rod 131 are pivotally connected to a pivot 118 on the same side, and the upper ends of each rod 131 are connected to the armrest 14. In some embodiments, the armrest 14 is, for example, U-shaped, including two rods 141 located on the left and right sides. The lower ends of each rod 141 are pivotally connected to the rods 131 of the upper support rod 13 on the same side, for example, via a pivot 117. In some alternative embodiments, the two rods 141 of the armrest 14 are connected to the two rods 131 via a telescopic structure, for example, to change the height of the armrest 14. A storage rack 140 for storing small items may be installed on the armrest 14. The storage rack 140 has, for example, a receiving cavity 1401 for holding cups or other items.

[0352] 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 simultaneously under the action of the connecting assembly 15. In this embodiment, the card holder 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 card holder assembly 200 and the unfolding of the frame 100. When the connecting assembly 15 is folded, it corresponds to the folding of the card holder assembly 200 and the folding of the frame 100.

[0353] Figure 50 An exemplary embodiment of the connecting component 15 is shown. The connecting component 15 includes, for example, a first coupling member 151, an auxiliary support member 152, and a linkage member 153.

[0354] The first connecting member 151 includes two first tubes 1511 located on the left and right sides, and 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.

[0355] The auxiliary support 152 is, for example, U-shaped, comprising two second tubes 1521 located on the left and right sides and a second crossbar 1502 connecting 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 extends in the left-right direction. 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 member 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 apart by a predetermined distance in the second direction F2. The second direction F2 corresponds to the front-back direction and is generally perpendicular to the first direction F1.

[0356] 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 S-shape, and each tube 1531 can be designed into any suitable structure as needed.

[0357] Depend on Figure 50 As can be seen, when the frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary support member 152 are unfolded and set 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. The fifth pivot point O5 is located between the second pivot point O2 and the third pivot point O3. See also Figure 52 and Figure 53 The diagram shows a perspective view of the folding process of the frame 100. When the frame 100 is in the folded state, the first connecting member 151 and the auxiliary support member 152 fold. More specifically, during the folding process of the frame 100, the included angle α between the first connecting member 151 and the auxiliary support member 152 changes from approximately 180 degrees to less than 90 degrees (e.g., ...). Figure 53 As shown, when the frame 100 is fully folded, the included angle α is less than 90 degrees.

[0358] See Figure 52 When the frame 100 of this embodiment needs to be folded, the armrest 14 is rotated about the pivot 117 and folded relative to the upper support rod 13. The upper support rod 13 is rotated about the pivot 118 and moved closer 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, causing the first connecting member 151 to rotate relative to the auxiliary support member 152 about the second pivot point O2 and move closer to the auxiliary support member 152. While rotating, the first connecting member 151 pulls the front support rod 11 closer to the rear support rod 12 until the frame 100 is folded down. Figure 53 The folded state shown.

[0359] Figures 54 to 59The diagram shows a cross-sectional view and a perspective view of a portion of the structure of the card holder assembly 200 of this embodiment. The card holder assembly 200 has, for example, a symmetrical structure. The card holder assembly 200 includes a base plate assembly 2 and a locking mechanism 21 mounted on the base plate assembly 2. The base plate assembly 2 includes, for example, an upper housing 201 and a lower housing 202, which are snapped together and can be fixed together by fasteners (e.g., screws or bolts, not shown). A space is formed between the upper housing 201 and the lower housing 202 to accommodate the locking mechanism 21.

[0360] See Figure 50 and Figure 51 The seat plate assembly 2 of the card holder assembly 200 is mounted on the connecting assembly 15 of the frame 100 and extends in the left-right direction (first direction F1). The seat plate assembly 2 of the card holder assembly 200 is located between the first crossbar 101 and the second crossbar 1502, that is, the seat plate assembly 2 of the card holder assembly 200 and the first crossbar 101 and the second crossbar 1502 are all spaced apart by a predetermined distance in the front-rear direction (second direction F2). See also [reference needed] Figure 50 and Figure 54 In some embodiments, sleeves 2010 are provided at the left and right ends of the upper housing 201, and each sleeve 2010 can be fitted onto the outside of an adjacent first tube 1511. The first tube 1511 and the second tube 1521 pivot at the second pivot point O2 through the sleeves 2010, so that the card holder assembly 200 cannot slide back and forth along the first connector 151. When the frame 100 is folded, the card holder assembly 200 can move to the folded position together with the first connector 151. In some alternative embodiments, sleeves for fitting with the two first tubes 1511 may also be provided at the left and right ends of the lower housing 202, or the upper housing 201 and the lower housing 202 may be joined together to form the sleeve.

[0361] See Figure 51 The card holder assembly 200 has two engaging channels 22 (e.g., recesses formed on the upper housing 201) extending in the front-rear direction (second direction F2). The two engaging channels 22 are spaced apart from each other and arranged in a row in the left-right direction (first direction F1). These two engaging channels 22 are used to engage with the engaging member 311 of the carrier 300 (see...). Figure 58 (The text appears to be incomplete and contains several grammatical errors. A more accurate translation would require the full context.) Figure 49The illustrated carrier 300 may be a shelf, stretcher, or the bottom structure of a container (such as a baby carrier or pet carrier, not shown in its complete form). The bottom of the carrier 300 includes a locking member 311, which may be formed, for example, on two opposing rods of a ring structure, or the locking member 311 may be formed by two or more independent rods. Of course, the implementation of the locking member 311 is not limited to these. The locking member 311 is used to engage with the locking channel 22 and can be locked in the locking channel 22 by the locking mechanism 21. The engagement of the locking member 311 and the locking channel 22 restricts the left-right movement of the carrier 300 relative to the seat assembly 200.

[0362] The wheeled mobile device 1000 provided in this embodiment of the utility model has a frame 100 that can be connected to various types of vehicles 300 through a card holder assembly 200, thereby expanding the versatility of the frame 100 and enabling the wheeled mobile device 1000 to provide a variety of functions to meet the user's needs.

[0363] See Figure 60 The cross-sectional view shown indicates that a positioning mechanism 400 is provided between the card holder assembly 200 and the carrier 300. The positioning mechanism 400 is used to limit the movement of the carrier 300 relative to the card holder assembly 200 in the front-rear direction (second direction F2). This positioning mechanism 400 includes, for example, a third positioning protrusion 431 formed on the upper housing 201 of the seat plate assembly 2 of the card holder assembly 200 (see...). Figure 51 and Figure 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 on the bottom of the carrier 300 (e.g., engaging in a convex-concave fit). Of course, the implementation of the positioning mechanism 400 is not limited to the above examples, as long as it can restrict the movement of the carrier 300 relative to the card holder assembly 200 in the front-rear direction. For example, in some alternative embodiments, a recess extending along the left-right direction can be provided on the upper housing 201 of the card holder assembly 200, and a positioning protrusion extending along the left-right direction can be provided on the carrier 300, with the recess engaging 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. Or, in some alternative embodiments, the positioning mechanism 400 is provided between the carrier 300 and the frame 100, and also between the carrier 300 and the card holder assembly 200.

[0364] See also Figure 60 The first crossbar 101, the mounting bracket 200, and the second crossbar 1502 work together to support the vehicle 300. The first crossbar 101 helps prevent the vehicle 300 from tipping forward relative to the mounting bracket 200, and the second crossbar 1502 helps prevent the vehicle 300 from tipping backward relative to the mounting bracket 200, thereby providing more reliable support for the vehicle 300.

[0365] Of course, in some alternative embodiments, one of the first crossbar 101 and the second crossbar 1502 cooperates with the seat assembly 200 to support the carrier 300, while the other does not support the carrier 300. The first crossbar 101 or the second crossbar 1502 supporting the carrier 300 can also be detachably engaged with the carrier 300 via a snap-fit ​​structure to prevent the carrier 300 from easily separating from the first crossbar 101 or the second crossbar 1502. In some embodiments, the snap-fit ​​structure includes, for example, a hook extending downward from the carrier 300, adapted to engage with the first crossbar 101 or the second crossbar 1502, thereby confining the first crossbar 101 or the second crossbar 1502 between the hook body and the carrier 300. In some embodiments, the snap-fit ​​structure can also restrict the forward and backward movement of the carrier 300 relative to the seat assembly 200, and the positioning mechanism 400 may include the snap-fit ​​structure. It should be noted that in embodiments where both the first crossbar 101 and the second crossbar 1502 are used to support the carrier 300, both the first crossbar 101 and the second crossbar 1502 can be detachably engaged with the carrier 300 via a snap-fit ​​structure (such as the snap hook described above).

[0366] 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 can be respectively provided on the carrier 300 and the first crossbar 101. The engagement between the first groove and the first positioning protrusion (e.g., engagement in a convex-concave manner) can 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 can be respectively provided on the carrier 300 and the second crossbar 1502. The engagement between the second groove and the second positioning protrusion (e.g., engagement in a convex-concave manner) can 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 aforementioned first groove and first positioning protrusion, as well as the second groove and second positioning protrusion.

[0367] See Figure 51 and Figure 60 A first abutment 103 for abutting against the vehicle 300 may also be installed on the first crossbar 101. The first abutment 103 may be, for example, but not limited to, a plastic sheet installed on the first crossbar 101, and may have an anti-slip effect. A second abutment 1503 for abutting against the vehicle 300 may be installed on the second crossbar 1502. The second abutment 1503 may be, for example, but not limited to, a rubber sleeve fitted onto the second crossbar 1502, and may have an anti-slip effect.

[0368] In some embodiments not shown, the position of the second crossbar 1502 in the front-rear direction is adjustable to accommodate carriers 300 of different sizes. More specifically, the two ends of the second crossbar 1502 are connected, for example, to two second tubes 1521 (see...). Figure 50 They are connected by telescopic structures to allow the position of the second crossbar 1502 to be adjustable in the front and rear directions.

[0369] See you again Figure 51 as well as Figures 54 to 59 An exemplary embodiment of the locking mechanism 21 is shown. The locking mechanism 21 includes two locking members 211, which are mounted in the base plate assembly 2 and are slidable in a left-right direction (first direction F1). Each locking member 211 corresponds one-to-one with one of the two engagement channels 22, and each locking member 211 has a locked position and an unlocked position. Taking either locking member 211 as an example, see... Figure 54 When the locking member 211 is in the locked position, the locking part 2111 (such as a latch) of the locking member 211 extends into the corresponding engagement channel 22 to lock the corresponding engagement member 311, preventing the engagement member 311 from being removed from the engagement channel 22. See also Figure 58 When the locking member 211 is in the unlocked position, the locking part 2111 of the locking member 211 retracts relative to the corresponding engagement channel 22 to release the corresponding engagement member 311, so as to allow the engagement member 311 to be removed from the engagement channel 22, thereby allowing the vehicle 300 to leave the frame 100.

[0370] See Figure 54 and Figure 58 As can be seen, in this embodiment, the two locking members 211 release or lock the engaging member 311 by moving in opposite directions in the left-right direction. This embodiment shows an exemplary structure for releasing the two locking members 211.

[0371] See Figure 49 and Figure 50 On the left and right sides of the frame 100, two wheel seats (more specifically, the front wheel seat 193) are each equipped with a release mechanism 212. The two locking elements 211 are released by the release mechanism 212. See also... Figure 61 The partial cross-sectional view shown indicates that each release actuating element 212 slides into the slide rail 1930 of the front wheel hub 193. See also [reference needed]. Figure 50 , Figure 55 , Figure 56 and Figure 61Two release mechanisms 212 are connected to two locking members 211 within the mounting bracket assembly 200 via two traction ropes 214. Each traction rope 214 extends inside the tube of the front wheel seat 193, front support rod 11, and first connecting member 151 of the frame 100, and then enters the mounting bracket assembly 200. To facilitate the arrangement of the traction ropes 214, the release mechanism 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 mounting bracket assembly 200, and the release mechanism 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 mounting bracket assembly 200. Thus, when either release mechanism 212 is pressed down, the traction rope 214 will pull the corresponding locking member 211 to move, causing the locking member 211 to release the corresponding engaging member 311. In some embodiments, a reset member 195 for driving the release mechanism 212 to reset may also be installed in the front wheel seat 193 (see...). Figure 61 The reset element is, for example, a spring.

[0372] See Figure 49 The release mechanism 212 may have a release identification area 2121, which assists the user in determining whether the locking member 211 is in the unlocked position. This release identification area 2121 may be, for example, a colored block (e.g., green) located on the release mechanism 212. More specifically, when the release mechanism 212 is not pressed, the locking member 211 is in the locked position, and the release identification area 2121 is visible on the outside of the front wheel arch 193. When the release mechanism 212 is pressed, the locking member 211 is in the unlocked position, and the release identification area 2121 slides into the front wheel arch 193 and becomes invisible. By observing whether the release identification area 2121 is visible, the user can easily determine whether the locking member 211 is in the locked or unlocked position.

[0373] See Figure 55 Each traction rope 214 is, for example, a steel wire rope. Taking any traction rope 214 as an example, one end of the traction rope 214 is connected to the corresponding release operation member 212, and the other end is connected to the corresponding locking member 211. At least one guide mechanism 16 for guiding the traction ropes 214 can be provided inside the frame 100, in conjunction with... Figure 61 The guiding mechanism 16 includes, for example, a rotating member 161 located near the release operation member 212 and other guiding structures disposed within the frame tube. Other guiding structures include, for example, a guide frame 162 disposed within the frame tube (such as within the front support rod 11) (see...). Figure 61 ) and the guide bracket 163 disposed inside the card holder assembly 200 (see Figure 55The rotating element 161 is more specifically disposed within the front wheel arch 193. The traction rope 214 passes through the rotating element 161, exits from the hole 1933 in the front wheel arch 193, and enters the front support rod 11. The rotating element 161 prevents unnecessary friction between the traction rope 214 and other structures. The rotating element 161 can be formed, for example, by a rotatable rivet or pin. See also... Figure 55 and Figure 61 Guide frames 162 and 163 are provided, for example, at the bends 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 secure the sheath 2140 of the traction rope 214.

[0374] See you again Figures 54 to 56 The card holder assembly 200 may further include a resilient device 24 for actuating the respective locking members 211 to return to the locked position. In some embodiments, the resilient device 24 may include a spring disposed between two locking members 211, or the resilient device 24 may include a spring disposed between the respective locking members 211 and the seat assembly 2 (e.g., upper housing 201 or lower housing 202). When the respective locking members 211 move to the unlocked position, the spring of the resilient device 24 is compressed. See also Figure 54 Each locking member 211 may have a locking part 2111 with a slope 2112. When the slope 2112 is pressed, the locking part 2111 can move from the locked position to the unlocked position, which allows the engaging member 311 to enter the engaging channel 22 without operating the unlocking operating member 212.

[0375] Figure 62 and Figure 63 A side view of the card holder assembly 200 is shown, showing two locking elements 211 and a linkage assembly 25. In this embodiment, the two locking elements 211 are connected by the linkage assembly 25 located between them, allowing the two locking elements 211 to move synchronously to either the unlocked or locked position. Thus, both locking elements 211 can be unlocked simultaneously by operating only one of the unlocking operation elements 212.

[0376] See Figure 62 and Figure 63The linkage component 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 pivotally connected by pivot A1, the third link 253 and the fourth link 254 are pivotally connected by pivot A2, the first link 251 and the third link 253 are pivotally connected by pivot A3, and the second link 252 and the fourth link 254 are pivotally connected by pivot A4. This four-bar linkage mechanism is a parallel four-bar linkage mechanism, wherein 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 assembly 2 (e.g., the upper housing 201 or the lower housing 202), and the other is a movable pivot. The two connecting rods pivoted to the active pivot are pivoted to the two locking elements 211 via pivots A5 and A6 respectively.

[0377] 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. See also Figure 63 When any locking element 211 is driven to the unlocking position by the corresponding unlocking operation element 212, the linkage assembly 25 will deform, causing the other locking element 211 to move synchronously to the unlocking position. Similarly, when any locking element 211 is driven to the locking position by the elastic device 24, the linkage assembly 25 will drive the other locking element 211 to move synchronously to the locking position. Of course, the structure of the linkage assembly 25 is not limited to the four-bar linkage structure described above; it only needs to enable the locking elements 211 connected by the linkage assembly 25 to move synchronously.

[0378] It is understood that by setting the linkage component 25, for example by pressing any of the release operation members 212, both locking members 211 can be released simultaneously. In some embodiments, by setting the linkage component 25, the number of release operation members 212 can be less than the number of locking members 211. For example, only one release operation member 212 can be set to release both locking members 211 simultaneously. Furthermore, by setting the linkage component 25, the elastic device 24 can include only a spring disposed between one locking member 211 and the base plate assembly 2 (e.g., upper housing 201 or lower housing 202) to synchronously drive both locking members 211 to reset to the locked position.

[0379] See you again Figures 54 to 59The card holder assembly 200 may also include retaining mechanisms 23 corresponding to the two locking members 211 respectively. When each locking member 211 is driven to the unlocking position by the release operation 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 release operation 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 release operation member 212, the locking member 211 remains in the unlocking position. Then, the user can easily remove the vehicle 300 from the frame 100 by simply lifting the vehicle 300 upwards. Based on 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 component 25, the retaining mechanism 23 can lock both locking members 211 in the unlocking position simultaneously.

[0380] See Figures 54 to 59 In this embodiment, the retaining mechanism 23 includes, for example, a movable part 231, a first latching part 2301, a second latching part 232, and a reset device (also called a reset member) 236.

[0381] See Figure 54 The movable member 231 can be installed in a slide 220 communicating with the engagement channel 22, the slide 220 being located below the engagement channel 22. The movable member 231 has an abutment end 2311 adapted to extend into the engagement channel 22 and a locking end 2312 away from the abutment end 2311. The abutment end 2311 is adapted to abut against the engaging member 311, which pushes the abutment end 2311 from the engagement channel 22 into the slide 220. A first latching portion 2301 is installed on the locking end 2312. The first latching portion 2301 is, for example, a latching groove.

[0382] See Figure 55 The second latching part 232 is provided on the locking member 211. See also Figure 57 In this embodiment, an elastic arm 213 is mounted on the locking member 211. The elastic arm 213 extends in the left-right direction to the vicinity of the abutment end 2311 of the movable member 231. A second latching portion 232 is mounted on the elastic arm 213. The second latching portion 232 includes, for example, a wedge-shaped step formed on the elastic arm 213.

[0383] See Figure 57 and Figure 58In some embodiments, the resilient arm 213 is secured to the locking member 211, for example, by a fastener 2131, such as a screw. An anti-rotation structure 26 may also be provided between the resilient arm 213 and the locking member 211 to prevent relative rotation between them. There are many implementations of the anti-rotation structure 26; this embodiment shows an exemplary implementation. More specifically, the anti-rotation structure 26 includes an anti-rotation block 261 and an anti-rotation groove 262. One of the anti-rotation block 261 and the anti-rotation groove 262 is disposed on the wall of the resilient arm 213 and offset from the fastener 2131, while the other is disposed on the locking member 211. The anti-rotation block 261 and the anti-rotation groove 262 engage to restrict rotation of the resilient arm 213 relative to the locking member 211 about the fastener 2131. In some alternative embodiments, the resilient arm 213 may be integrally formed with the locking member 211.

[0384] The reset device 236 is used to drive the abutment end 2311 of the movable member 231 into the engagement 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 assembly 2. In some embodiments, the movable member 231 has, for example, a chamber 2310 for receiving the reset device 236 (see...). Figure 58 ).

[0385] The following is combined Figure 54 , Figure 58 and Figure 59 This will explain the working process of the retaining mechanism 23 that cooperates with the locking member 211 when the position of any locking member 211 changes.

[0386] See Figure 54 When the vehicle 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 latching part 2301 moves to the moving path of the second latching part 232.

[0387] See Figure 58When the vehicle 300 needs to be removed from the frame 100, pressing the release operation 212 drives the locking member 211 to move to the release position. The second latching part 232 moves with the locking member 211, and the elastic device 24 is compressed. When the second latching part 232 abuts against the engaging end 2312 of the movable member 231, the elastic arm 213 elastically deforms to allow the locking member 211 to continue moving. After the locking member 211 moves to the release position, the second latching part 232 faces the first latching part 2301. At this time, the elastic arm 213 elastically rebounds, causing the second latching part 232 to engage with the first latching part 2301. Even if the release operation 212 is released at this time, under the engaging action of the second latching part 232 and the first latching part 2301, the elastic device 24 cannot drive the locking member 211 to the release position, and the locking member 211 is locked in the release position by the holding mechanism 23. At this point, the user can remove the vehicle 300 from the frame 100 by simply lifting it upwards without continuing to press the release mechanism 212.

[0388] See Figure 59 When the vehicle 300 is removed from the frame 100, the engaging member 311 moves away from the engaging channel 22 and no longer presses against 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 latching part 2301 moves out of the moving path of the second latching part 2302 as the movable member 231 moves, and the locking member 211 is reset to the locked position under the action of the elastic device 24.

[0389] In some alternative embodiments, the retaining mechanism 23 may be implemented in various ways, and is not limited to the examples described above. For example, in some alternative embodiments, the first latching part 2301 may be a wedge-shaped step provided on the latching end 2312 of the movable member 231, and the second latching part 232 may be a slot provided on the elastic arm 213.

[0390] In some embodiments not shown, the wheeled mobile device 1000 provided in the above embodiments of the present invention can be modified as follows.

[0391] I. In some alternative embodiments, the frame 100 has a non-foldable structure, and the connecting assembly 15 for mounting the mounting bracket assembly 200 has a correspondingly different implementation. For example, the connecting assembly 15 includes two non-foldable tubes located on the left and right sides, which extend in the front-rear direction and are connected to rods 111 and 121 on the same side, respectively. Each tube of the connecting assembly 15 and the rods 111 and 121 on the same side form a stable triangle. The left and right ends of the mounting bracket assembly 200 can be fitted onto the two tubes of the connecting assembly 15 and fixed by fasteners, or the left and right ends of the mounting bracket assembly 200 can be directly fixed to the two tubes of the connecting assembly 15 by fasteners (bolts or screws). The mounting bracket assembly 200 is located between the first crossbar 101 and the rear crossbar 122.

[0392] 2. In some alternative embodiments, the auxiliary support rod 152 may not have a second crossbar 1502 connecting the two second tubes 1521 on the left and right sides. By reasonably setting the height of the rear crossbar 122 of the rear support rod 12, the rear crossbar 122 can be used as a second crossbar for cooperating with the card holder assembly 200 to support the carrier 300.

[0393] Third, in some alternative embodiments, the second crossbar 1502 for supporting the auxiliary support rod 152 of the carrier 300 may not be located at the rear end of the two second tubes 1521. For example, the connection position of the second crossbar 1502 to each of the second tubes 1521 may be located between the second pivot point O2 and the third pivot point O3, and the second crossbar 1502 and the card holder assembly 200 are spaced apart by a predetermined distance in the front-back direction (second direction F2).

[0394] IV. In some alternative embodiments, the two ends of the card holder assembly 200 may not be mounted on the two first tubes 1511 of the first connector 151. For example, the two ends of the card holder assembly 200 may be connected to the two second tubes 1521 of the auxiliary support rod 152, respectively.

[0395] V. In some alternative embodiments, the number of engagement channels 22 on the card holder assembly 200 is not limited to two, but can be one or more (including two). For example, multiple engagement channels 22 can be arranged in a row along the left-right direction, in a column along the front-back direction, or in multiple rows and columns along both the left-right and front-back directions.

[0396] VI. In some alternative embodiments, the multiple locking elements 211 that cooperate with the multiple engagement channels 22 in the same row move in the same direction when releasing or locking the engagement element 311. For example, the multiple locking elements 211 that cooperate with the multiple engagement channels in the same row are arranged in a row, and the locking elements 211 in the same row can be connected to the same sliding member located in the base plate assembly 2. In this way, there is no need to set up a linkage component 25, and multiple locking elements 211 can be moved to the release position simultaneously by driving the sliding member through the same release operation member 212.

[0397] 7. The location of the release mechanism 212 is not limited to the front wheel arch 193. In some alternative embodiments, the release mechanism 212 may be located on the rear wheel arch 194 or other suitable locations, and the release mechanism 212 controls the release of the locking member 211 via the traction rope 214. Furthermore, in some alternative embodiments, the release mechanism 212 may be attached to or integrally formed with the locking member 211.

[0398] 8. Although in this embodiment, the wheeled mobile device 100 includes a frame 100, a seat assembly 200 and a carrier 300, as can be seen from the above, the carrier 300 can be detached from the seat assembly 200, and the wheeled mobile device 100 without the carrier 300 is also within the protection scope of this application.

[0399] See Figures 64 to 66 The diagram illustrates the structure of a storage rack 140 mounted on a handrail 14 of a frame 100 in some variant embodiments of a wheeled mobility device. The storage rack 140 has, for example, a receiving cavity 1401 for holding cups or other items. Depending on the item to be held, the receiving cavity 1401 may have different cross-sectional shapes. For example, some receiving cavities 1401 have a rectangular cross-section to accommodate a mobile phone, while others have a circular cross-section to accommodate a water cup.

[0400] In some embodiments, the opening of the receiving cavity 1401 may be provided with at least one inwardly extending clamping portion 1402, which may be made of, for example, an elastic material. When an object is placed in the receiving cavity 1401, the clamping portion 1402 can abut against the object, preventing the object from swinging back and forth in the receiving cavity 1401 and preventing the object from easily falling out of the receiving cavity 1401. This invention does not impose specific limitations on the shape of the clamping portion 1402, as long as it can abut against the object to clamp it at the opening of the receiving cavity 1401. For example, in some embodiments, multiple clamping portions 1402 may be evenly arranged around the circumference of the opening of the receiving cavity 1401, each clamping portion 1402 having, for example, an arc-shaped shape. In some embodiments, a strip-shaped clamping portion 1402 may be provided at a localized location of the opening of the receiving cavity 1401.

[0401] See Figure 66In some embodiments, the clamping portion 1402 is formed, for example, on an annular member 1403, which can be made of any suitable material. The annular member 1403 can be secured to a retaining ring 1404 by overmolding, and the retaining ring 1404 can be secured to the annular step 14011 at the opening of the receiving cavity 1401 by any suitable means. In some embodiments, the annular member 1403 can be, but is not limited to, made of thermoplastic elastomer (TPE) material. The retaining ring 1404 can be, but is not limited to, made of polypropylene (PP) material, and the retaining ring 1404 has a higher hardness than the annular member 1403. The retaining ring 1404 can be secured to the step 14011, for example, by compression or vibration welding. Of course, the clamping portion 1402 can also be secured to the opening of the receiving cavity 1401 to clamp an object by any other suitable means, not limited to being secured by the retaining ring 1404.

[0402] Fourth embodiment

[0403] Figure 67 A perspective view of a wheeled mobile device 1000 according to a fourth embodiment of the present invention is shown. The wheeled mobile device 1000 may include a frame 100, a mounting bracket 200, and a carrier 300. The wheeled mobile device 1000 includes a support assembly according to some embodiments of the present invention, which will be described in conjunction with the following description of the wheeled mobile device 1000. Figure 67 In the illustrated embodiment, the wheeled mobility device 1000 is exemplarily described using a stroller as an example. Depending on the type of carrier 300, the stroller can be a children's stroller, a pet stroller, a shopping cart, etc. Of course, in some alternative embodiments, the wheeled mobility device 1000 can also be other types of products.

[0404] See Figure 68 The structure of the frame 100 shown is, in some embodiments, generally symmetrical from left to right. The frame 100 may include, for example, a front support rod 11, a rear support rod 12, an upper support rod 13, a handlebar 14, and a connecting assembly 15. The frame 100 is foldable to have an unfolded state (see...). Figure 68 and Figure 70 ) and folded status (see Figure 72 and Figure 73 ).

[0405] See Figure 68The front support rod 11 has, for example, a U-shaped structure, including a first crossbar 101 and two rods 111. At least one front wheel seat 193 is mounted on the bottom of the front support rod 11, and the front wheel seat 193 is used to mount the front wheel 191. Unless otherwise specified, the structure of the front support rod 11, the front wheel seat 193, and the front wheel 191 can be referred to the description in the third embodiment above. In some embodiments, the two front wheel seats 193 are mounted at the left and right ends of the first crossbar 101, and the two rods 111 are respectively connected to the front wheel seat 193 on the same side.

[0406] The rear support rod 12 has, for example, a U-shaped structure, including a rear crossbar 122 and two rods 121. The upper end of each rod 121 is pivotally connected to, for example, the upper end of each rod 111 of the front support rod 11 on the same side via a pivot 118. The rear support rod 12 is equipped with two rear wheel seats 194, each rear wheel seat 194 being used to mount a rear wheel 192. Unless otherwise specified, the structure of the rear support rod 12, the rear wheel seats 194, and the rear wheels 192 can be referred to the description in the third embodiment above.

[0407] The upper support rod 13 includes two rods 131, the lower ends of which are pivotally connected to a pivot 118 on the same side, and the upper ends of which are connected to the handrail 14. In some embodiments, the handrail 14 is, for example, U-shaped, including two rods 141, the lower ends of which are pivotally connected to the rods 131 of the upper support rod 13 on the same side, for example, via a pivot 117. A storage rack 140 for storing small items may be installed on the handrail 14. Unless otherwise specified, the structures of the upper support rod 13, handrail 14, and storage rack 140 can be referred to the description in the third embodiment above.

[0408] 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. Figure 68 and Figure 69 An exemplary embodiment of the connecting assembly 15 is shown. The connecting assembly 15 includes, for example, a first connecting 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.

[0409] 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.

[0410] The auxiliary support 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 rear end of the first tube 1511 on the same side at a second pivot point O2, forming a rotation axis XX at the second pivot point O2 (see...). Figure 69 More specifically, the second tube 1521 and the first tube 1511 on the same side are pivotally connected, for example, by a pivot 150, the axis of rotation XX being the center line of the pivot 150, and the axis of rotation XX being parallel to the first direction F1. Each of the second tubes 1521 is also pivotally connected to the third pivot point O3 of the member 121 of the rear support rod 12 on the same side. In some embodiments, the auxiliary support 152 may further include an intermediate tube connected between the two first tubes 1511, and the auxiliary support 152 is generally U-shaped.

[0411] 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 with any suitable structure and 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.

[0412] Depend on Figure 68 and Figure 70 As can be seen, when the frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary support member 152 are unfolded and arranged generally horizontally, and the included angle α between each of the first tubes 1511 and the adjacent second tubes 1521 on the same side is approximately 180 degrees. In some embodiments, when the frame 100 is in the unfolded state, the included angle α formed between the first connecting member 151 and the auxiliary support member 152 can be an obtuse angle greater than 90 degrees. (Continue to see...) Figure 68 When the frame 100 is in the deployed 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. (See also...) Figure 72 and Figure 73 When the frame 100 is in the folded state, the first connecting member 151 and the auxiliary support member 152 are also in the folded state, and the included angle α between each first tube 1511 and the adjacent second tube 1521 on the same side is an acute angle.

[0413] See Figures 70 to 73The diagram shows a perspective view of the folding process of the frame 100. When the frame 100 of this embodiment needs to be folded, the armrest 14 is rotated about the pivot 117 and folded relative to the upper support rod 13. The upper support rod 13 is rotated about the pivot 118 and moves closer to the rear support rod 12. The linkage 153 drives the auxiliary support member 152 to rotate about the third pivot point O3 as the upper support rod 13 moves, causing the first connecting member 151 to rotate relative to the auxiliary support member 152 about the second pivot point O2 and move closer to the auxiliary support member 152. The included angle α between each of the first tubes 1511 of the first connecting member 151 and the adjacent second tubes 1521 of the auxiliary support member 152 changes from approximately 180 degrees to an acute angle of less than 90 degrees (e.g., ...). Figure 72 As shown, when the frame 100 is fully folded, the included angle α is less than 90 degrees. The first connecting member 151, while rotating, pulls the front support rod 11 closer to the rear support rod 12 until the frame 100 is folded down. Figure 72 and Figure 73 The folded state shown.

[0414] Figure 68 and Figure 69 An exemplary embodiment of the card holder assembly 200 of this example is shown. The card holder assembly 200 includes a seat plate assembly for placing an object (more specifically, a carrier) thereon, the seat plate assembly including a first seat plate assembly 2A and a second seat plate assembly 2B. The first seat plate assembly 2A is mounted to a first connector 151 and is provided with a locking mechanism (such as a first locking mechanism 21A). The second seat plate assembly 2B is mounted to an auxiliary support 152 and is provided with a locking mechanism (such as a second locking mechanism 21B). As previously described, the first connector 151 and the auxiliary support 152 are pivotally connected by a pivot 150 having a rotation axis XX, thereby allowing the first seat plate assembly 2A and the second seat plate assembly 2B to rotate relative to each other about the rotation axis XX, so that the card holder assembly 200 has an unfolded state and a folded state.

[0415] See Figure 68 When the frame 100 is in the deployed state, the first connecting member 151 and the auxiliary support member 152 are also deployed, and the card holder assembly 200 is correspondingly deployed. See also Figure 67 , Figure 69 and Figure 70 When the card holder assembly 200 is in the deployed state, it can support the carrier 300 and lock the carrier 300 via the first locking mechanism 21A and the second locking mechanism 21B. See also... Figures 71 to 73After the vehicle 300 is removed from the frame 100, the frame 100 can be folded up. When the frame 100 is in the folded state, the first connecting member 151 and the auxiliary support member 152 are also folded up, and the card holder assembly 200 is folded up accordingly. When the frame 100 and the card holder assembly 200 transition from the unfolded state to the folded state, the first seat plate assembly 2A and the second seat plate assembly 2B move closer to each other in the front-rear direction. When the frame 100 and the card holder assembly 200 transition from the folded state to the unfolded state, the first seat plate assembly 2A and the second seat plate assembly 2B move further apart in the front-rear direction.

[0416] The card holder assembly 200 of this embodiment can reduce the internal space required by the folded frame 100 through its own folding mechanism. See also Figure 73 In some embodiments, the card holder assembly 200 may be provided with a handle 29, which may be located, for example, on the first seat plate assembly 2A and / or the second seat plate assembly 2B, allowing the user to easily move the folded frame 100. More specifically, when the frame 100 is folded, the handle 29 is located, for example, in the internal space of the frame freed up by the folded card holder assembly 200, without protruding outward relative to the frame 100, thus reducing packaging volume and lowering transportation costs.

[0417] The support assembly provided in some embodiments of this utility model may include the aforementioned card holder assembly 200, first connecting member 151, and auxiliary support member 152. The pivot connection between the first seat plate assembly 2A and the second seat plate assembly 2B is achieved by means of the pivot connection between the first connecting member 151 and the auxiliary support member 152. However, in practical applications, the pivot connection method of the first seat plate assembly 2A and the second seat plate assembly 2B is not limited to the examples described above. For example, in some embodiments, the first connecting member 151 and the auxiliary support member 152 may not be provided. The first seat plate assembly 2A and the second seat plate assembly 2B themselves have sufficient structural strength, and they can be directly pivotally connected by the pivot 150, and can be directly pivotally connected to 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 pivotally connected by the pivot 150, the support assembly may include the card holder assembly 200 but not the first connecting member 151 and the auxiliary support member 152.

[0418] See Figure 69In some embodiments, a first base plate assembly 2A is connected between two first tubes 1511 and extends along a left-right direction (first direction F1). A second base plate assembly 2B is connected between two second tubes 1521 and extends along a left-right direction (first direction F1). When the card holder assembly 200 is in the deployed state, the first base plate assembly 2A and the second base plate assembly 2B are spaced apart in a second direction F2. This second direction F2 corresponds 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 generally perpendicular to the first direction F1.

[0419] See Figure 70 and Figure 71 In some embodiments, the first seat plate assembly 2A is closer to the pivot 150, and the second seat plate assembly 2B is farther from the pivot 150. See also Figure 73 When the frame 100 is in the folded state, the cassette assembly 200 is also in the folded state. The positions of the first cassette assembly 2A and the second cassette assembly 2B are staggered and do not overlap, which also helps to reduce the volume of the folded frame 100. See Figure 73 In some embodiments, when the frame 100 is folded down, the second seat plate assembly 2B is located above the first seat plate assembly 2A, and the handle 29 is provided, for example, on the second seat plate assembly 2B.

[0420] See you again Figure 69 In some embodiments, sleeves 2010 are provided at both ends of the first base plate assembly 2A, and each sleeve 2010 can be fitted onto the outside of an adjacent first tube 1511. A pivot 150 passes through the sleeve 2010, so that the first base plate assembly 2A cannot move back and forth along the first tube 1511. In some embodiments, the pivot 150 can be a hollow shaft.

[0421] See also Figure 69 In some embodiments, both the first base plate assembly 2A and the second base plate assembly 2B include at least one engagement channel 22, each engagement channel 22 extending in a front-rear direction (second direction F2). Both the first locking mechanism 21A and the second locking mechanism 21B include at least one locking member 211, each locking member 211 movable in a left-right direction (first direction F1) to have a locked position extending into a corresponding engagement channel 22 and an unlocked position retracting from the corresponding engagement channel 22. The direction of movement of each locking member 211 is parallel to the rotation axis XX. It is understood that when the locking member 211 is in the locked position, it can lock the carrier 300, and when the locking member 211 is in the unlocked position, it allows the carrier 300 to be removed from the base plate assembly 200.

[0422] See also Figure 69In this embodiment, the engagement channel 22 on the first base plate assembly 2A can be referred to as the first engagement channel 22A, and the engagement channel 22 on the second base plate assembly 2B can be referred to as the second engagement channel 22B. See also Figure 69 and Figure 74 The locking element 211 of the first locking mechanism 21A can be referred to as the first locking element 211A. See also Figure 69 , Figure 77 and Figure 78 The locking element 211 of the second locking mechanism 21B can be referred to as the second locking element 211B. In this embodiment, there can be two first engaging channels 22A and two first locking elements 211A, with the unlocking and locking directions of the two first locking elements 211A being opposite. Similarly, there can be two second engaging channels 22B and two second locking elements 211B, with the unlocking and locking directions of the two second locking elements 211B being opposite. Of course, in some alternative embodiments, the unlocking and locking directions of the two first locking elements 211A can be the same, and the unlocking and locking directions of the two second locking elements 211B can be the same.

[0423] See Figure 70 and Figure 74 In some embodiments, the first seat assembly 2A includes, for example, an upper housing 201 and a lower housing 202, a first engaging channel 22A formed on the upper housing 201, and a first locking member 211A located in a receiving cavity enclosed by the upper housing 201 and the lower housing 202. A sleeve 2010 is provided, for example, at both ends of the upper housing 201. See also... Figure 77 and Figure 78 In some embodiments, the second seat assembly 2B includes, for example, an upper housing 203 and a lower housing 204, a second engaging channel 22B formed on the upper housing 203, and a second locking member 211B located in a receiving cavity enclosed by the upper housing 203 and the lower housing 204. See also Figure 77 In some embodiments, the handle 29 may include an upper housing (not shown) and a lower housing 292. The upper housing of the handle 29 may be attached to or integrally formed with the upper housing 203, and the lower housing 292 may be attached to or integrally formed with the lower housing 204.

[0424] Where there is no conflict, the description of the vehicle 300 can be found in the description of the third embodiment above. For example, the bottom of the vehicle 300 may be provided with a locking member 311, which is used to engage with each locking channel 22 (first locking channel 22A and second locking channel 22B). See [link to documentation]. Figures 67 to 69When the carrier 300 is supported and locked by the card holder assembly 200, the grooves on the bottom of the carrier 300 (not shown in the figure, see, for example, the groove 430 in the third embodiment) engage with the first seat plate assembly 2A and the second seat plate assembly 2B respectively, restricting the movement of the carrier 300 in the front-rear direction (second direction F2). The engaging members 311 are respectively engaged in the first engaging channel 22A and the second engaging channel 22B, and are respectively locked by the first locking member 211A of the first locking mechanism 21A ( Figure 82 ) and the second locking element 211B of the second locking mechanism 21B ( Figure 78 The vehicle 300 is locked, preventing it from moving in the left-right direction (first direction F1) or being removed from the mounting bracket 200. More specifically, see... Figure 78 and Figure 82 When each locking element 211 (first locking element 211A and second locking element 211B) is in the locked position, the locking part 2111 (such as a locking tongue) of each locking element 211 extends into the corresponding engagement channel 22 (first engagement channel 22A or second engagement channel 22B) to lock the corresponding engagement element 311, preventing the engagement element 311 from being removed from the engagement channel 22. When the two first locking elements 211A move towards each other and the two second locking elements 211B move towards each other and retract from the corresponding engagement channel 22, each engagement element 311 is allowed to be removed from the corresponding engagement channel 22, and the vehicle 300 can be removed from the mounting bracket 200. It can be understood that the detachable connection between the vehicle 300 and the mounting bracket 200 allows the frame 100 to be used with different types of vehicles 300.

[0425] In some alternative embodiments, the implementation of the vehicle 300 is not limited to the examples described above. For example, the engaging member 311 at the bottom of the vehicle 300 may be formed on two opposing rods that are parallel to each other in the annular structure, or the engaging member 311 may be formed by four or more rods that are independent of each other.

[0426] See Figure 74 , Figure 75 and Figure 76 In some embodiments, two first locking elements 211A are connected by a first linkage component 25A. The first linkage component 25A controls the synchronous movement of the two first locking elements 211A, so that the two first locking elements 211A switch synchronously between their locked and unlocked positions. In this way, unlocking any one of the first locking elements 211A can simultaneously unlock the other first locking element 211A. Of course, when any one of the first locking elements 211A moves to the locked position, the other first locking element 211A moves synchronously to the locked position under the action of the first linkage component 25A.

[0427] See Figure 74 and Figure 76The first linkage component 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 pivotally connected via pivots A1, A2, A3, and A4. Unless otherwise specified, the structure of the first linkage component 25A can be found in the description of the linkage component 25 in the third embodiment above. One of the diagonally arranged pivots A1 and A2 is a fixed pivot fixedly connected to the seat assembly 2A (e.g., upper housing 201 or lower housing 202), and the other is a movable pivot. The two links pivotally connected to the movable pivot are respectively pivotally connected to two locking members 211 (more specifically, the first locking member 211A) via pivots A5 and A6.

[0428] 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 A5. See also... Figure 76 When any of the first locking elements 211A moves to the unlock position, the first linkage assembly 25A will deform, causing the other first locking element 211A to move synchronously to the unlock position. Similarly, when any of the first locking elements 211A moves to the lock position, the first linkage assembly 25A will drive the other first locking element 211A to move synchronously to the lock position. Of course, the structure of the first linkage assembly 25A is not limited to the four-bar linkage structure described above; it only needs to enable the first locking elements 211A connected through the first linkage assembly 25A to move synchronously.

[0429] In some embodiments not shown, the two second locking elements 211B can be connected via a second linkage component (not shown). The second linkage component controls the synchronous movement of the two second locking elements 211B, so that the two second locking elements 211B synchronously switch between their locked and unlocked positions. The structure of the second linkage component and its connection relationship with the two second locking elements 211B can be found in the structure of the first linkage component and its connection relationship with the two first locking elements 211A described above. That is, the two second locking elements 211B have corresponding configurations as the two first locking elements 211A, and the structure of the second linkage component and its connection relationship with the two second locking elements will not be described again here.

[0430] See Figure 74 , Figure 75 , Figure 77 and Figure 78In some embodiments, the first locking element 211A of the first locking mechanism 21A and the second locking element 211B of the second locking mechanism 21B can be connected by corresponding linkages 27, so that each locking element 211 can switch synchronously between the locked position and the unlocked position. Thus, unlocking any first locking element 211A or any second locking element 211B can simultaneously unlock the corresponding second locking element 211B or the first locking element 211A. Of course, when any first locking element 211A or second locking element 211B moves to the locked position, the corresponding second locking element 211B or first locking element 211A will also move synchronously to the locked position.

[0431] See Figure 74 and Figure 77 In some embodiments, the linkage 27 may be a traction rope. A first locking member 211A and a second locking member 211B, arranged diagonally, are connected by the same linkage 27, thereby the locking and unlocking movements of the first locking member 211A and the second locking member 211B connected to the same linkage 27 are in opposite directions. More specifically, the first locking member 211A on the left and the second locking member 211B on the right are connected by a linkage 27, and the first locking member 211A on the right and the second locking member 211B on the left are connected by a linkage 27. In some embodiments, the traction rope may include a wire rope, which may be wrapped in a wire rope sheath. See also Figure 75 In some embodiments, the linkage 27 connected to the first locking member 211A passes through the hole 15112 of the first tube 1511 into the first tube 1511, then into the hollow pivot 150, then into the second tube 1521, and finally into the second seat plate assembly 2B and connects with the corresponding second locking member 211B.

[0432] In addition, each linkage component (first linkage component 25A and second linkage component) and linkage member 27 can be collectively referred to as linkage device. The linkage device is used to connect between locking members 211 so that these locking members 211 can move together to the unlocking position or the locking position, thereby realizing the synchronous unlocking or locking of multiple locking members 211 on the vehicle 300.

[0433] See Figure 74 and Figure 77In this embodiment, the two first locking elements 211A are connected by a first linkage component 25A, and each first locking element 211A is connected to a corresponding second locking element 211B via a linkage component 27. Thus, even without a second linkage component between the two second locking elements 211B, when either the first locking element 211A or the second locking element 211B moves to the unlocking or locking position, the first linkage component 25A and the linkage component 27 can simultaneously unlock or lock all the locking elements 211 (first locking elements 211A and second locking elements 211B). Alternatively, in some alternative embodiments, the two second locking elements 211B can be connected by a second linkage component, and each first locking element 211A can still be connected to its corresponding second locking element 211B via a linkage component 27. In this way, even without a first linkage component 25A between the two first locking elements 211A, the simultaneous unlocking or locking of all the locking elements 211 can still be achieved.

[0434] This embodiment illustrates an exemplary implementation of releasing each locking element 211. See also Figure 67 and Figure 68 Release operation components 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. The two release operation components 212 are operably connected to the two first locking components 211A. By pressing any release operation component 212, each locking component 211 can be driven to move to the release position. The support assembly provided in this embodiment of the present invention also includes the release operation component 212.

[0435] See Figure 79 and Figure 80 More specifically, each release actuation element 212 slides into the slide rail 1930 of the front wheel seat 193. See also Figure 75 and Figure 79 Each release mechanism 212 is connected to a corresponding first locking member 211A in the first seat plate assembly 2A via a traction rope 214. The ends 2141 of each traction rope 214 (see...) Figure 79 ) is connected to the corresponding release operation element 212, and the other end 2142 (see Figure 75The release mechanism 212 of the front wheel seat 193 enters the interior of the rod 111 of the front support rod 11 and the interior of the first tube 1511, and then enters the interior of the first seat plate assembly 2A through the hole 15111 of the first tube 1511, connecting with the corresponding first locking member 211A. To facilitate the layout of the traction rope 214, the release mechanism 212 of the front wheel seat 193 on the left side of the frame is connected to the first locking member 211A on the right side of the frame via the same traction rope 214, and the release mechanism 212 of the front wheel seat 193 on the right side of the frame is connected to the first locking member 211A on the left side of the frame via the same traction rope 214. Thus, when any release mechanism 212 is pressed, the traction rope 214 will directly pull the corresponding first locking member 211A to the release position. Under the action of the first linkage assembly 25A and the linkage member 27, the other locking members 211 also move to the release position.

[0436] In some embodiments, a reset member 195 for resetting the release operation member 212 may also be installed within the front wheel housing 193 (see...). Figure 79 The reset element 195 is, for example, a spring. It is understood that the reset element 195 is not essential; when each locking element 211 resets to the locked position, the first locking element 211A can also pull the release operation element 212 to reset via the traction rope 214. Alternatively, in some embodiments, the frame 100 may be configured with only one release operation element 212, which can still release all locking elements 211 simultaneously. Of course, in some embodiments, the frame 100 may be configured with more release operation elements 212, for example, directly connected to each locking element 211 in a one-to-one correspondence. In some embodiments, each release operation element 212 may be located in other positions of the frame 100, not limited to the front wheel arch 193.

[0437] See Figure 79 and Figure 80 Each release actuation element 212 may have a release identification area 2121, which assists the user in determining whether the locking element 211 is in the unlocked position. This release identification area 2121 may be, for example, a colored block (e.g., green) located on the release actuation element 212. More specifically, when the release actuation element 212 is not pressed, the locking element 211 is in the locked position, and the release identification area 2121 is visible on the outside of the front wheel arch 193. When the release actuation element 212 is pressed, the locking element 211 is in the unlocked position, and the release identification area 2121 slides into the front wheel arch 193 and becomes invisible. By observing whether the release identification area 2121 is visible, the user can easily determine whether the locking element 211 is in the locked or unlocked position.

[0438] See you again Figure 75 Each traction rope 214 is, for example, a steel wire rope, and at least a portion of the steel wire rope may be encased in a sheath 2140. See also Figure 79 The frame 100 may have at least one guide mechanism 16 for guiding the traction rope 214. The guide mechanism 16 may include multiple guide frames located at bends inside the tube of the frame 100, which guide the traction ropes 214 by supporting the sheath 2140. Figure 79 and Figure 80 The image shows a guide frame 164 between the rod 111 and the first tube 1511.

[0439] See Figure 79 and Figure 80 In some embodiments, the release actuation member 212 has a first driving ramp 2123, which is inclined relative to the sliding direction F3 of the release actuation member 212. The end 2141 of the traction rope 214 abuts against the first driving ramp 2123 to allow it to slide along the first driving ramp 2123, thereby pulling the first locking member 211A to move. More specifically, when the release actuation member 212 is pressed, i.e., from... Figure 79 The state shown moves down to Figure 80 In this state, the end 2141 of the traction rope 214 moves along the first drive ramp 2123 to the center of the front wheel seat 193, while the traction rope 214 pulls the corresponding first locking member 211A to the release position. In some embodiments, the release operation member 212 is provided with a slot 2120, and the front wheel seat 193 is provided with a hole 1933, which communicates with the internal space of the rod 111. The traction rope 214 passes through the slot 2120 and the hole 1933 into the rod 111.

[0440] See also Figure 79 and Figure 80 In some embodiments, the release mechanism 212 includes, for example, a first limiting wall 2125, which extends downward relative to the first drive ramp 2123. A first engaging structure 2126 is formed between the first limiting wall 2125 and the first drive ramp 2123. A second limiting wall 1931 is provided within the wheel seat 193, and a second engaging structure 1932 is formed on the second limiting wall 1931. The second engaging structure 1932 is, for example, a concave structure. When the release mechanism 212 is not pressed, the end 2141 of the traction rope 214 engages with the first engaging structure 2126 (e.g., Figure 79 When the release mechanism 212 is pressed into place, the end 2141 of the traction rope 214 engages with the second locking structure 1932 (as shown). Figure 80 ).

[0441] See also Figure 79 and Figure 80In some embodiments, a first guide ramp 1934 may also be provided within the wheel seat 193. The first guide ramp 1934 is inclined relative to the sliding direction F3 of the release operation member 212, and an angle β is formed between the first guide ramp 1934 and the first drive ramp 2123, which is, for example, an acute angle. The end 2141 of the traction rope 214 abuts against both the first drive ramp 2123 and the first guide ramp 1934 within the range of the angle β. That is, when the end 2141 of the traction rope 214 moves along the first drive ramp 2123 between the first locking structure 2126 and the second locking structure 1932, the end 2141 of the traction rope 214 also moves along the first guide ramp 1934.

[0442] Please see Figure 74 and Figure 77 The card holder assembly 200 may also include a resilient device 24 for actuating each locking member 211 to return to the locked position. See also Figure 74 In some embodiments, the elastic device 24 may include a spring 2401 disposed between any of the first locking members 211A and the housing of the first base plate assembly 2A, for example, a spring 2401 may be disposed between each of the first locking members 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 unlocked position, the spring 2401 is compressed. See also Figure 77 In some embodiments, the elastic device 24 may include a spring 2402 disposed between the housing of any second locking member 211B and the housing of the second base plate assembly 2B, for example, a spring 2402 may be 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 unlocked position, the spring 2402 is compressed.

[0443] See Figure 78 and Figure 81 In some embodiments, the locking portion 2111 of each locking member 211 (first locking member 211A and second locking member 211B) may have a ramp 2112, which allows each engaging member 311 to enter each engaging channel 22 (first engaging channel 22A and second engaging channel 22B) without pressing the release operation member 212.

[0444] See you again Figures 81 to 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 can 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 one-to-one with two locking members 211 (more specifically, first locking members 211A). 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 on the unlocking operation member 212 (i.e., press the unlocking operation member 212), and each locking member 211 remains in the unlocking position. The user can easily remove the vehicle 300 from the frame 100 by simply lifting the vehicle 300 upwards.

[0445] As described above, when any unlocking operation 212 drives the corresponding first locking member 211A to the unlocking position, under the action of the linkage component 25 and the linkage component 27, all locking members 211 (first locking member 211A and second locking member 211B) move to the unlocking position. Similarly, under the action of the linkage component 25 and the linkage component 27, as long as one locking member 211 (any first locking member 211A or second locking member 211B) is locked in the unlocking position by the holding mechanism 23, all locking members 211 will be locked in the unlocking position. In some alternative embodiments, only one holding mechanism 23 can be configured for any one locking member 211 (any first locking member 211A or second locking member 211B), and other locking members 211 may not be configured with holding mechanisms 23. Of course, in some alternative embodiments, each locking member 211 may be configured with a holding mechanism 23.

[0446] See Figures 81 to 87 An exemplary embodiment of the retaining mechanism 23 is shown. The retaining mechanism 23 includes, for example, a movable element 231 and a reset device 236 (see Figure 233). Figure 87 ).

[0447] The movable member 231 can be installed in a slide 220 communicating with a corresponding engagement channel 22 (more specifically, a first engagement channel 22A), the slide 220 being located below the first engagement channel 22A. The movable member 231 has an abutment end 2311 adapted to extend into the first engagement channel 22A and a locking end 2312 away from the abutment end 2311. The abutment end 2311 is adapted to abut against the engaging member 311, which pushes the abutment end 2311 from the first engagement channel 22A into the slide 220. In some embodiments, the locking end 2312 may be provided with a first latching portion 2301, such as a latching groove.

[0448] See Figure 75 and Figure 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 abutment end 2311 of the movable member 231. A second latching portion 232 may be provided on the elastic arm 213, 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.

[0449] See Figure 87 and Figure 88 The reset device 236 may include a first reset member 233, a cable 234, and a slider 235. The first reset member 233 and the slider 235 are, for example, installed in the hollow rod 111 of the front support frame 11. One end of the cable 234 is connected to the slider 235, and the other end enters the first connecting member 1511 via the guide frame 164, and then passes through the hole 15112 (see...). Figure 75 The first reset member 233 abuts against the sliding member 235, thereby driving the sliding member 235 to reset, which in turn causes the cable 234 to drive the movable member 231 to move, so that the abutting end 2311 of the movable member 231 extends into the corresponding engagement channel 22 (first engagement 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.

[0450] See Figure 83 and Figure 84In some embodiments, the movable member 231 has a connecting portion 2313 located outside the slide rail 220, and the cable 234 is supported by a guide frame 165 located outside the slide rail 220, with the end 2341 of the cable 234 connected to the connecting portion 2313. The moving direction F4 of the cable 234 located between the guide frame 165 and the connecting portion 2313 is parallel to the slide rail 220, thus allowing the movable member 231 to be pulled into the corresponding first engagement channel 22A with less effort.

[0451] The following is combined Figures 81 to 86 To explain the working process of maintaining mechanism 23.

[0452] See Figure 81 When the carrier 300 is not installed on the card holder assembly 200, the abutting end 2311 of the movable part 231 extends into the corresponding first engagement channel 22A, the first latching part 2301 and the second latching part 232 of the latching end 2312 are separated from each other, and the first latching part 2301 is located above the second latching part 232.

[0453] See Figures 82 to 84 When the carrier 300 is installed onto the mounting bracket assembly 200, each engaging member 311 is locked in its corresponding engaging channel 22 by each locking member 211. The movable member 231 is pressed down by the engaging member 311 and moves downward along the slide 220, causing the first latching portion 2301 to move onto the moving path of the second latching portion 232 (i.e., the latching end 2312 moves onto the moving path of the first locking member 211A). The movement of the movable member 231 will cause the end 2341 of the cable 234 to move downward as well. See [reference needed]. Figure 88 At the same time, the cable 234 drives the slider 235 to move down along the rod 111 against the tension of the first reset member 233, and the first reset member 233 is compressed.

[0454] See Figure 80 and Figure 85When it is necessary to remove the carrier 300 from the card holder assembly 200, pressing any of the release operation members 212 will drive the corresponding first locking member 211A to move to the release position. As mentioned above, the other locking members 211 also move to the release position. The second latching part 232 moves with the first locking member 211A. When the second latching part 232 abuts against the latching end 2312 of the movable member 231, the elastic arm 213 undergoes elastic deformation to allow the first locking member 211A to continue moving. When the first locking member 211A moves to the unlock position, the second latching part 232 faces the first latching part 2301. At this time, the elastic arm 213 elastically rebounds, causing the second latching part 232 to engage with the first latching part 2301 (that is, the latching end 2312 engages with the first locking member 211A). The first locking member 211A and other locking members 211 are directly or indirectly locked in the unlock position by the holding mechanism 23. Even if the unlocking operation member 212 is released afterwards, under the engaging action of the second latching part 232 and the first latching part 2301, the elastic device 24 cannot drive each locking member 211 to the unlock position. The user does not need to continue pressing the unlocking operation member 212, but can easily remove the vehicle 300 from the frame 100 by simply lifting the vehicle 300 upwards.

[0455] After the carrier 300 is removed from the card holder assembly 200, the engaging member 311 leaves the engaging channel 22 and no longer presses against the abutting end 2311 of the movable member 231. See Figure 87 The compressed first reset 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 via the cable 234. The abutting end 2311 of the movable member 231 moves upward and re-enters the engagement channel 22. See also... Figure 86 The snap-fit ​​end 2312 of the movable part 231 drives the first snap-fit ​​part 2301 to move upward and move out of the moving path of the second snap-fit ​​part 232, no longer blocking the corresponding first locking part 211A from moving to the locking position. Each locking part 211 then resets to the locking position under the action of the elastic device 24.

[0456] Of course, in some alternative embodiments, the retaining mechanism 23 can be implemented in various ways, and is not limited to the examples described above. For example, in some alternative embodiments, the first latching part 2301 may be a wedge-shaped step provided on the latching end 2312 of the movable member 231, and the second latching part 232 may be a slot provided on the elastic arm 213. In some alternative embodiments, the movable member 231 of the retaining mechanism 23 is, for example, mounted on the second base plate assembly 2B, and the movable member 231 is adapted to be pressed against by the engaging member 311 entering the second engaging channel 2B, and the elastic arm provided with the second latching part 232 is correspondingly connected to the second locking member 211B. See also Figure 76In some embodiments, the reset device 236 of the retaining mechanism 23 may further include a reset member 237, which abuts against the movable member 231 and is used to drive the abutting end 2311 of the movable member 231 to move upward and extend into the engagement channel 22.

[0457] See Figure 87 and Figure 88 In some embodiments, the slider 235 has a snap-in indicator area 2351, and the rod 111 is provided with an observation hole 110 for observing the snap-in indicator area 2351. The snap-in indicator area 2351 includes, for example, a colored block (e.g., green) located on the slider 235. As described above, when the movable member 231 is pressed by the engaging member 311, the slider 235 is pulled down by the cable 234, at which time the green colored block of the snap-in indicator area 2351 moves to the observation hole 110 and becomes visible. The user can thus determine that the movable member 231 has been pressed by the engaging member 311 of the vehicle, and thus determine that the vehicle 300 has been locked by the mounting bracket assembly 200. When the movable member 231 is not pressed by the engaging member 311, the green colored block of the snap-in indicator area 2351 returns to above the observation hole 110 and becomes invisible. At this time, even if the vehicle 300 may have been placed on the mounting bracket assembly 200, it is not locked by the mounting bracket assembly 200. The user can adjust the relative position of the vehicle 300 and the card holder assembly 200 according to the display of the card holder instruction area 2351 so that the vehicle 300 is reliably locked by the card holder assembly 200.

[0458] Fifth embodiment

[0459] Figure 89 A perspective view of a wheeled mobile device 1000 according to a fifth embodiment of the present invention is shown. The wheeled mobile device 1000 may include a frame 100, a seat 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. Unless otherwise specified, the structure of the components and the connection relationships between the components in this embodiment can be referred to the description in the fourth embodiment above. The following mainly describes the differences between this embodiment and the fourth embodiment. It can be understood that the wheeled mobile device 1000 provided in this embodiment also includes a support assembly according to some embodiments of the present invention. This support assembly includes at least the seat assembly 200, and may also include a first connecting member 151 and an auxiliary support member 152.

[0460] Reference Figures 90 to 92In this embodiment of the invention, the retaining mechanism 23 has been modified. The retaining mechanism 23 includes a movable member 231 and a reset device 236. The reset device 236 includes a reset member 237, but the first reset member 233, the cable 234, and the sliding member 235 of the fourth embodiment are omitted. Accordingly, the observation hole 110 of the fourth embodiment can be omitted from the rod 111, and the connecting part 2313 for connecting with the cable 234 in the fourth embodiment can be omitted from the movable member 231. In addition, the traction rope 214 and the linkage member 27 can enter the interior of the first seat plate assembly 2A through the hole 15111 of the first tube 15111, thus omitting the hole 15112 of the fourth embodiment.

[0461] See Figures 91 to 94 In some embodiments, the reset member 237 may be, for example, a spring, with one end abutting against the movable member 231 and the other end abutting against, for example, the lower housing 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 presses 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 presses against the abutting end 2311 of the movable member 231, the reset member 237 elastically resets and drives the movable member 231 to move upward, and the abutting end 2311 of the movable member 231 extends back into the engaging channel 22. In some embodiments, the movable member 231 may be provided with a chamber 2310 for accommodating the reset member 237.

[0462] Reference Figures 91 to 93 In some embodiments, the movable member 231 is further provided with a limiting portion 2314, which is located outside the slide rail 220 and protrudes, for example, toward the corresponding locking member 211. The locking member 211 is provided with a mating portion 2113 for abutting against the limiting portion 2314. In some embodiments, the locking member 211 has a recess 210, and the mating 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 onto or out of the moving path of the locking member 211. See also Figure 92 When the locking member 211 is in the unlocked position and the engaging member 311 has just moved out of the engaging channel 22, the resetting member 237 drives the movable member 231 to move upward. Simultaneously, the abutting end 2311 of the movable member 231 extends into the engaging channel 22, and the limiting part 2314 moves into the moving path of the locking member 211. See also... Figure 93When the abutting end 2311 is fully inserted into the engagement channel 22, the limiting part 2314 remains in contact with the mating part 2113. The contact between the limiting part 2314 and the mating part 2113 prevents the locking member 211 from resetting to its locked position. Thus, when the carrier 300 needs to be reinstalled, the engagement member 311 of the carrier 300 can enter the engagement channel 22 without being obstructed by the locking member 211.

[0463] The following is combined Figures 94 to 98 To explain the working process of maintaining mechanism 23.

[0464] See Figure 94 When the carrier 300 is installed onto the card holder assembly 200, each engaging member 311 is locked in its corresponding engaging channel 22 by its respective locking member 211. See also Figure 95 The abutting end 2311 of the movable part 231 is pressed by the engaging part 311 and moves downward along the slide 220 and exits from the engaging channel 22, causing the first latching part 2301 to move onto the moving path of the second latching part 232 (that is, the latching end 2312 moves onto the moving path of the first locking part 211A), and at the same time causing the limiting part 2314 to move out of the moving path of the locking part 211, and the reset part 237 is compressed.

[0465] See Figure 96 In conjunction with the description of the fourth embodiment above, when it is necessary to remove the carrier 300 from the card holder assembly 200, pressing any of the release operation members 212 drives the corresponding first locking member 211A to move along direction Y1 to the release position, and the other locking members 211 also move to the release position together. The second latching part 232 moves with the first locking member 211A. When the second latching part 232 abuts against the latching end 2312 of the movable member 231, the elastic arm 213 undergoes elastic deformation to allow the first locking member 211A to continue moving. When the first locking member 211A moves to the unlock position, the second latching part 232 faces the first latching part 2301. At this time, the elastic arm 213 elastically rebounds, causing the second latching part 232 to engage with the first latching part 2301 (that is, the engaging end 2312 engages with the first locking member 211A). The first locking member 211A and other locking members 211 are directly or indirectly locked in the unlock position by the holding mechanism 23. Even if the unlocking operation member 212 is released afterwards, under the engaging action of the second latching part 232 and the first latching part 2301, the elastic device 24 cannot drive each locking member 211 to the unlock position. The user does not need to continue pressing the unlocking operation member 212; simply lifting the vehicle 300 upwards will easily remove the vehicle 300 from the frame 100. Figure 96It can be seen that when each locking member 211 is locked in the unlocked position, the recess 210 is located above the limiting part 2314, making room for the upward movement of the limiting part 2314. In some embodiments, when the second latching part 232 engages with the first latching part 2301, the mating part 2113 and the limiting part 2314 have a small gap D in the moving direction of the corresponding locking member 211, and the mating part 2113 is in a position that does not interfere with the upward movement of the limiting part 2314.

[0466] See Figure 97 and Figure 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 against 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 re-enter the engaging channel 22 (first engaging channel 22A). During the upward movement of the movable member 231, at the instant when the second latching part 232 disengages from the first latching part 2301, the movable member 231 continues to move upward. At the same time that the limiting part 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 toward the locking position by the distance of the aforementioned interval D (see Figure 96 (This continues) until the mating part 2113 comes into contact with the limiting part 2314. At this point, the locking member 211 cannot continue to move to the locking position due to the obstruction of the limiting part 2314. It is understandable that, because the interval D is very small, when the engaging member 311 of the carrier 300 moves out of the engaging channel 22, each locking member 211 is still held in the unlocked position.

[0467] See Figure 98When the abutting end 2311 of the movable member 231 is inserted into the engaging channel 22, although the first latching part 2301 of the movable member 231 moves upward and out of the moving path of the second latching part 232, no longer blocking the corresponding first locking member 211A from moving to the locking position, each locking member 211 remains in the unlocked position under the action of the mutually abutting limiting part 2314 and the mating part 2113. Thus, when the carrier 300 needs to be reinstalled, the engaging member 311 of the carrier 300 can enter the engaging channel 22 without being obstructed by the locking member 211. Furthermore, because the locking member 211 moves a distance D along direction Y2 towards the locking position before the mating part 2113 abuts against the limiting part 2314, the first latching part 2301 and the second latching part 232 are not aligned in the moving direction of the movable member 231. When one of the first latching part 2301 and the second latching part 232 is a latching groove and the other is a wedge-shaped step, the groove wall 23011 of the latching 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 a slope (in this embodiment, the side surface 2321 includes a slope 23211 as an example).

[0468] When the carrier 300 needs to be reinstalled onto the card holder assembly 200, the engaging member 311 is placed in the engaging channel 22, causing the engaging end 2312 of the movable member 231 to be pressed out of the engaging channel 22. During the process of the engaging end 2312 exiting the engaging channel 22, the reset member 237 is compressed, and the limiting part 2314 moves downward and out of the movement path of the first locking member 211A, so that the limiting part 2314 no longer abuts against the mating part 2113, and thus no longer obstructs the corresponding first locking member 211A from moving to the locking position. During the downward movement of the limiting part 2314, the groove wall 23011 and the side 2321 contact each other through the inclined surface 23211. Under the action of the inclined surface 23211, the elastic arm 213 drives the second latching part 232 to move away from the first latching part 2301, thereby preventing the second latching part 232 from engaging with the first latching part 2301, thus not affecting the elastic device 24 driving each locking member 211 to move to the locking position. After the engaging member 311 is placed in place, each locking member 211 is driven to the locking position by the elastic device 24.

[0469] This embodiment is similar to the method of releasing the locking elements 211 in the fourth embodiment described above. Release operation elements 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. The two release operation elements 212 are operably connected to the two first locking elements 211A. By pressing any release operation element 212, each locking element 211 can be driven to move to the release position. Furthermore, each release operation element 212 may have a release identification area 2121, which is used to assist the user in determining whether the locking element 211 is in the release position. This release identification area 2121 is, for example, a colored block (e.g., green) located on the release operation element 212. When the release operation element 212 is not pressed, the locking element 211 is in the locked position, and the release identification area 2121 is visible outside the front wheel seat 193. When the release operation 212 is pressed, the locking member 211 is in the release position, and the release identification area 2121 slides into the front wheel seat 193 and becomes invisible.

[0470] See Figures 99 to 102 To avoid the situation where the release identification area 2121 of the release operation component 212 that is directly pressed is not visible, but the release identification area 2121 of the release operation component 212 that is not directly pressed is still visible, causing difficulties for the user in identification, this embodiment also provides a release state synchronization mechanism 196. The release state synchronization mechanism 196 can allow the release identification areas 2121 of different release operation components 212 to be visible or invisible at the same time.

[0471] This embodiment illustrates an exemplary implementation of the release state synchronization mechanism 196. The release state synchronization mechanism 196 includes, for example, a second reset member 1961, which abuts against the end 2141 of the traction rope 214 and is adapted to provide a force to the end 2141 of the traction rope 214, causing it to move from the first locking structure 2126 towards the second locking structure 1932. Thus, when a release operation member 212 is directly pressed, the end 2141 of the traction rope 214 corresponding to the unpressed release operation member 212 moves towards the second locking structure 1932 under the drive of the second reset member 1961 and disengages from the first driving ramp 2123. This allows the unpressed release operation member 212 to slide downwards under gravity. Consequently, the release identification areas 2121 of both the unpressed and directly pressed release operation members 212 are simultaneously invisible. Both release operation elements 212 are simultaneously in the state of releasing the locking element 211.

[0472] The following is combined Figures 99 to 102 The working process of each release operation component 212 will be explained in detail.

[0473] See Figure 99 and Figure 100In some embodiments, the second reset member 1961 can be a spring, sleeved around the traction rope 214 with one end abutting against the end 2141 of the traction rope 214, and the other end of the spring can be limited by any suitable structure. For example, the other end of the spring can abut against the guide frame 164. When each locking member 211 is in the locked position and neither of the two release operating members 212 is directly pressed, the traction ropes 214 corresponding to the two first locking members 211A are in a taut state. The ends 2141 of the two traction ropes 214 respectively engage with the corresponding first locking structure 2126, and each second reset member 1961 is compressed.

[0474] See Figure 101 and Figure 102 The two release actuators 212 include a left release actuator 212A or a right release actuator 212B. When the user directly presses either release actuator 212, for example, pressing the left release actuator 212A, the end 2141 of the traction rope 214 connected to the left release actuator 212A moves along the first drive ramp 2123 and the first guide ramp 1934 toward the second locking structure 1932 under the drive of the first drive ramp 2123. When the release actuator 212A is pressed into place, the release identification area 2121 on the release actuator 212A enters the interior of the left front wheel seat 193 and becomes invisible, and the first locking member 211A, which is operably connected to the release actuator 212A, moves to the release position.

[0475] As described in the fourth embodiment, when the first locking member 211A, operably connected to the release operation member 212A, moves to the release position under the action of the first linkage component 25A, the first locking member 211A, operably connected to the right-side release operation member 212B, simultaneously switches from the locked position to the release position. During this process, the traction rope 214 (hereinafter referred to as the right-side traction rope 214) connected to the release operation member 212B tends to slack off. At this time, the second reset member 1961 corresponding to the right-side traction rope 214 drives the end 2141 of the right-side traction rope 214 to move from the first locking structure 2126 to the second locking structure 1932. The end 2141 of the right-side traction rope 214 separates from the first drive ramp 2123 of the release operation member 212B. This allows the release operation member 212B to automatically slide down within the slide rail 1930 under gravity, so that the release identification area 2121 on the release operation member 212B enters the interior of the right-side front wheel seat 193 and becomes invisible. At this time, the release identification areas 2121 of both release operation members 212 are simultaneously invisible, and the user can directly determine whether the locking member 211 is in the locked or unlocked position by observing either release identification area 2121, thus reducing the likelihood of misjudgment.

[0476] When each locking element 211 moves from the unlocked position to the locked position, each first locking element 211A drives the corresponding traction rope 214 to move synchronously. The ends 2141 of each traction rope 214 simultaneously drive the first driving ramps 2123 of the corresponding release operation elements 212A and 212B, causing the release operation elements 212A and 212B to move upward synchronously. The release identification areas 2121 of the release operation elements 212A and 212B are simultaneously exposed and visible outside the front wheel seat 193. Both release operation elements 212 are simultaneously in the state of not releasing the locking element 211.

[0477] Sixth Embodiment

[0478] Figure 103 A perspective view of a wheeled mobile device 1000 according to a sixth embodiment of the present invention is shown. Similar to the fourth embodiment described above, the wheeled mobile device 1000 includes a frame 100, a mounting bracket 200, and a carrier 300. The wheeled mobile device 1000 also includes a support assembly according to another embodiment of the present invention, which will be described concurrently with the description of the wheeled mobile device 1000 below.

[0479] The frame 100 is generally symmetrical from left to right. The frame 100 may include a front support rod 11, a rear support rod 12, an upper support rod 13, and a handlebar 14. The frame 100 can be folded to have an unfolded state (see...). Figure 104 ) and folded status (see Figure 105 ).

[0480] See Figure 104 The front support rod 11 has a U-shaped structure, including two rods 111 located on the left and right sides and a first crossbar 101 connecting the two rods 111. The first crossbar 101 extends in the left-right direction (first direction F1). Two front wheel seats 193 are installed at the left and right ends of the first crossbar 101. Each front wheel seat 193 is used to install a front wheel 191, which can be a caster wheel or a non-caster wheel.

[0481] The rear support rod 12 has a U-shaped structure, including two rods 121 located on the left and right sides and a rear crossbar 122 connecting the two rods 121. The rear crossbar 122 extends in the left-right direction (first direction F1). The upper end of each rod 121 is pivotally connected to the upper end of each rod 111 of the front support rod 11 on the same side via a pivot 118. The rear support rod 12 is equipped with two rear wheel seats 194, which are spaced apart in the left-right direction. Each rear wheel seat 194 is used to install a rear wheel 192, which can be a caster wheel or a non-caster wheel.

[0482] The upper support rod 13 includes two rods 131 located on the left and right sides. The lower end of each rod 131 is pivotally connected to the pivot portion 118 on the same side, and the upper end of each rod 131 is connected to the handrail 14. In some embodiments, the handrail 14 has a U-shaped structure, including two rods 141 located on the left and right sides. The two rods 141 of the handrail 14 are connected to the two rods 131 through a telescopic structure, for example, so that the height of the handrail 14 can be changed.

[0483] In some embodiments, the pivot 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, which holds the frame 100 in the unfolded state. When the locking mechanism is released, the frame 100 is allowed to change to the folded state.

[0484] See Figures 106 to 108 In this embodiment, the support assembly includes a first connecting member 151, an auxiliary support member 152, and a mounting bracket assembly 200. Unlike the fourth embodiment described above, the first connecting member 151 and the auxiliary support member 152 are not connected between the front support rod 11 and the rear support rod 12 of the frame 100, but are detachably connected to the frame 100. The first seat plate assembly 2A of the mounting bracket assembly 200 is mounted on the first connecting member 151, and the second seat plate assembly 2B is mounted on the auxiliary support member 152. The mounting bracket assembly 200 is used to support and lock the vehicle 300. In the wheeled mobility device 1000 provided in this embodiment, the entire support assembly can be removed from the frame 100, allowing the frame 100 to be detachably connected to the mounting bracket assembly 200, and the mounting bracket assembly 200 to be detachably connected to the vehicle 300.

[0485] See Figure 104 , Figure 106 and Figure 107 In some embodiments, the first seat plate assembly 2A is connected to the first pivot seat 81 via a first connecting member 151, and the second seat plate assembly 2B is connected to the second pivot seat 82 via an 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 may also be referred to as the left and right symmetrical planes 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 a mounting seat 83, which can be mounted on the pivot portion 118 of the frame 100 and can be detachably connected to a locking hole (not shown) on the pivot portion 118 via a locking member 831.

[0486] See Figure 104 and Figure 107When the frame 100 is in the unfolded state, the first connecting member 151 and the auxiliary support member 152 are unfolded and arranged substantially horizontally, with an included angle α between them approximately 180 degrees. Of course, in some embodiments, when the frame 100 is in the unfolded state, the included angle α between the first connecting member 151 and the auxiliary support member 152 can be an obtuse angle greater than 90 degrees. In some embodiments, a locking mechanism can be provided between the first pivot seat 81 and the second pivot seat 82 to lock the relative position between the first pivot seat 81 and the second pivot seat 82, thereby holding the first connecting member 151 and the auxiliary support member 152 in the unfolded state.

[0487] When the frame 100 needs to be folded, the first connecting member 151 and the auxiliary support member 152 can rotate relative to each other to fold it. After folding, the included angle α formed by the first connecting member 151 and the auxiliary support member 152 is an acute angle less than 90 degrees (see...). Figure 105 ).

[0488] See Figure 107 and Figure 108 In some embodiments, the first connecting member 151 may include two parallel first pipes 1511 and an intermediate pipe 1512 connecting the two first pipes 1511. The auxiliary support member 152 may include two parallel second pipes 1521 and an intermediate pipe 1522 connecting the two second pipes 1521. The ends of each first pipe 1511 are connected to corresponding first pivot seats 81, and the ends of each second pipe 1521 are connected to corresponding second pivot seats 82. The first pivot seats 81 and the second pivot seats 82 on the same side are pivotally connected.

[0489] See Figure 107 In some embodiments, a release element 84 is mounted on the first pivot 81 via a pivot 841 parallel to the second direction F2. The release element 84 can rotate about the pivot 841 to release the positional lock of the first pivot 81 and the second pivot 82, thereby allowing the first pivot 81 and the second pivot 82 to rotate relative to each other. In some embodiments, the release element 84 may be provided with a hole 840, in which a pull element 842, such as a webbing, can be installed. When it is necessary to fold the first connecting member 151 and the auxiliary support member 152, the release element 84 is driven to rotate about the pivot 841 via the pull element 842. After the release element 84 rotates to its position, the positional lock between the first pivot 81 and the second pivot 82 is released, and the user can then manually drive the first connecting member 151 and the auxiliary support member 152 to fold. In some embodiments, when the first pivot 81 and the second pivot 82 rotate relative to each other, the drive member 85 on the mounting base 83 can be driven to move, and the movement of the drive member 85 will drive the first pivot portion 118 (see... Figure 105The locking mechanism on the front support rod 11, rear support rod 12 and upper support rod 13 is released, thereby releasing the position lock of the front support rod 11, rear support rod 12 and upper support rod 13, which can then be folded.

[0490] See Figure 107 and Figure 108 In some embodiments, the card holder 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. As can be seen from the above, the first seat plate assembly 2A and the second seat plate assembly 2B are capable of rotating relative to each other about the rotation axis XX, so that the card holder assembly 200 has an unfolded state and a folded state. See also Figure 104 The unfolded state of the card holder assembly 200 corresponds to the unfolded state of the frame 100. See also Figure 105 The folded state of the card holder assembly 200 corresponds to the folded state of the frame 100.

[0491] It should be noted that in some alternative embodiments, the support assembly may not include the first connecting member 151 and the auxiliary support member 152. For example, the first base plate assembly 2A may be directly connected to the first pivot seat 81, and the second base plate assembly 2B may be directly connected to the second pivot seat 82. This is also within the protection scope of this utility model.

[0492] See Figure 104 and Figure 107 The first base 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 base 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. Both the first base plate assembly 2A and the second base plate assembly 2B include at least one engaging channel 22, each engaging channel 22 extending in the front-rear direction (second direction F2). Both the first locking mechanism 21A and the second locking mechanism 21B include at least one locking member 211, each locking member 211 moving in the left-right direction (first direction F1) to have a locking position extending into the corresponding engaging channel 22 and an unlocking position retracting from the corresponding engaging channel 22. The direction of movement of each locking member 211 is parallel to the rotation axis XX. It is understood that when the locking member 211 is in the locked position, it can lock the carrier 300, and when the locking member 211 is in the unlocking position, it allows the carrier 300 to be removed from the base plate assembly 200.

[0493] See also Figure 104 , Figure 106 and Figure 108The engaging channel 22 on the first base plate assembly 2A can be referred to as the first engaging channel 22A, and the engaging channel 22 on the second base 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 located, for example, directly above the intermediate tube 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 located, for example, directly above the intermediate tube 1522. In this embodiment, there can be two first engaging channels 22A and two first locking members 211A, and the locking and unlocking directions of the two first locking members 211A are opposite. Similarly, there can be two second engaging channels 22B and two second locking members 211B, and the locking and unlocking directions of the two second locking members 211B are opposite. Of course, in some alternative embodiments, the unlocking and locking directions of the two first locking members 211A can be the same, and the unlocking and locking directions of the two second locking members 211B can be the same.

[0494] See Figure 108 In some embodiments, the first seat assembly 2A includes, for example, an upper housing 201 and a lower housing 202, a first engaging channel 22A formed on the upper housing 201, and a first locking member 211A located in a receiving cavity formed by the upper housing 201 and the lower housing 202. The second seat assembly 2B includes, for example, an upper housing 203 and a lower housing 204, a second engaging channel 22B formed on the upper housing 203, and a second locking member 211B located in a receiving cavity formed by the upper housing 203 and the lower housing 204.

[0495] Figure 103 Another exemplary embodiment of the carrier 300 is shown, such as an infant carrier. The carrier's support assembly includes an annular structure at the bottom, exposed at the bottom of the carrier 300. The annular structure (which can be considered as engaging member 311) has two parallel rods that can be engaged with respective engaging channels 22 (first engaging channel 22A and second engaging channel 22B). When the carrier 300 is supported and locked by the seat assembly 200, each engaging member 311 engages into the corresponding first engaging channel 22A and second engaging channel 22B, and is 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, respectively.

[0496] See Figure 106When each locking member 211 (first locking member 211A and second locking member 211B) is in the locked position, the locking part 2111 (such as a locking tongue) of each locking member 211 extends into the corresponding engagement channel 22 (first engagement channel 22A and second engagement channel 22B) to lock the corresponding engagement member 311, so that the engagement member 311 cannot be removed from the engagement channel 22. When the two first locking members 211A move towards each other and the two second locking members 211B move towards each other and retract from the corresponding engagement channel 22, the engagement member 311 is allowed to be removed from the corresponding engagement channel 22, and the carrier 300 can be removed from the card holder 200.

[0497] See Figure 108 In some embodiments, two first locking elements 211A are connected by a first linkage component 25A. The first linkage component 25A controls the synchronous movement of the two first locking elements 211A, so that the two first locking elements 211A switch synchronously between their locked and unlocked positions. Thus, unlocking any one first locking element 211A simultaneously unlocks the other. Of course, when any one first locking element 211A moves to the locked position, the other first locking element 211A moves synchronously to the locked position under the action of the first linkage component 25A. The connection relationship between the first linkage component 25A and each first locking element 211A can be found in the fourth embodiment, and will not be repeated here.

[0498] See also Figure 108 In some embodiments, the first locking element 211A of the first locking mechanism 21A and the second locking element 211B of the second locking mechanism 21B can be connected by corresponding linkages 27 to synchronously switch between their respective locked and unlocked positions. In this way, unlocking any first locking element 211A or second locking element 211B can simultaneously unlock the corresponding second locking element 211B or first locking element 211A.

[0499] See also Figure 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 locking and unlocking movements of the first locking member 211A and the second locking member 211B connected to the same linkage 27 are opposite, enabling synchronous locking or unlocking of 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 a linkage 27, and the first locking member 211A on the right and the second locking member 211B on the left are connected by a linkage 27. In some embodiments, the traction rope may include a wire rope, at least a portion of which may be wrapped in a wire rope sheath.

[0500] See Figures 107 to 113 In some embodiments, the first pivot 81 and / or the second pivot 82 are provided with a guide structure 801, and each linkage 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 and the guide structure 801 cooperate to prevent the traction rope of the linkage 27 from piling up.

[0501] See Figure 109 In some embodiments, the first pivot 81 includes a disc 811 and a cover 812. The disc 811 has a sleeve 813 for connection to the first tube 1511 of the first connector 151. One side of the disc 811 is opposite to the second pivot 82 (see...). Figure 107 The cover 812 is mounted on the other side of the disc 811. The disc 811 has a groove 8110, and the pivot portion 845 of the release element 84 extends into the groove 8110 and is connected to the disc 811 via a pivot 841. See also Figure 106 In some embodiments, the shapes of the cover 812 and the release element 84 are substantially complementary, and the area of ​​the cover 812 is larger than the area of ​​the release element 84. See also Figure 109 and Figure 112 The center of the disc body 811 has a column 802, which has a hole through which the pivot shafts of the first pivot seat 81 and the second pivot seat 82 pass, and the cover body 812 covers the column 802.

[0502] See also Figure 109 In some embodiments, the release member 84 has an elongated countersunk hole 843, and a fastener 86 is mounted on the disc body 811. The fastener 86 passes through the elongated countersunk hole 843 and connects to the post 8014 on the disc body 811. An elastic reset member 87 is sleeved on the fastener 86, and the elastic reset member 87 is clamped between the head 861 of the fastener 86 and the step 8431 of the elongated countersunk hole 843. The fastener 86 can limit the release rotation range of the release member 84. When the release member 84 is subjected to an external pulling force and rotates about the pivot 841, the elastic reset member 87 is compressed. When the external pulling force on the release member 84 is removed, the elastic reset member 87 drives the release member 84 to reset, and the release member 84 adheres to the disc body 811.

[0503] See Figure 109 and Figure 110 In some embodiments, a plurality of connecting posts 8012 are provided on the disc body 811, and a plurality of holes 8120 are provided on the cover body 812. A plurality of fasteners (not shown) pass through each hole 8120 and are connected to the corresponding connecting post 8012. The connecting posts 8012 support the cover body 812, thereby defining a space 8100 between the cover body 812 and the disc body 811 for the corresponding linkage 27 to pass through (see...). Figure 112The guide structure 801 can be located in the space 8100 defined by the cover 812 and the disc 811.

[0504] See Figure 110 A portion of the edge of the cover 812 may be provided with a flange 8126 that abuts against the disc 811, while a portion of the edge 8125 of the cover 812 is separated from the disc 811. A notch 8121 may be provided on the flange 8126, through which the linkage 27, connected to the first locking member 211A, passes through the first base plate assembly 1A and enters the space 8100. A slit 8122 is formed between the portion of the edge 8125 of the cover 812 and the disc 811, allowing the linkage 27 to pass through the space 8100 (see...). Figure 111 The linkage 27 passes through the slit 8122 and enters the second seat plate assembly 1B to connect with the second locking member 211B. In some embodiments, a slit 8122 for the linkage 27 to pass through can also be formed between the release member 84 and the disc body 811.

[0505] See Figures 109 to 113 An exemplary embodiment of the guide structure 801 is shown. The guide structure 801 may include an arcuate structure 8011 opposite to the column 802, forming a channel 8020 between the arcuate structure 8011 and the column 802 for the linkage 27 to pass through. The guide structure 801 may also include at least a portion of the connecting column 8012 and other suitable components, such as ribs 8013 disposed on the disc 811. See also Figure 112 and Figure 113 When the first pivot 81 and the second pivot 82 rotate relative to each other, causing the support assembly to switch to an unfolded or folded state, the tightness of the linkage 27 may change. However, under the guidance of the guide structure 801, the accumulation of the traction rope of the linkage 27 can be effectively avoided. Of course, in some alternative embodiments, the implementation of the guide structure 801 is not limited to the above examples, as long as it can prevent the linkage 27 from accumulating.

[0506] This embodiment illustrates an exemplary implementation of releasing each locking element 211. See also Figures 106 to 108 Two holes 2122 are provided on the upper housing 201 of the first base plate assembly 2A. The two holes 2122 are symmetrically arranged on the left and right sides. Release operation members 212 are respectively installed in the two holes 2122. Each release operation member 212 is operably connected to the first locking member 211A on the same side, for example, to directly or indirectly drive the locking member 211 to move to the release position. In some embodiments, the moving direction of each release operation member 212 is perpendicular to the moving direction of the corresponding first locking member 211A.

[0507] See Figure 114The diagram shows an exploded view of the release operation member 212 and the first locking member 211A. In some embodiments, each first locking member 211A is attached with an extension 2116, which is attached to the corresponding first locking member 211A, for example, through a positioning groove 2119 and a positioning post 2118. The extension 2116 extends toward the corresponding release operation member 212 and is provided with an oblique hole 2110, the wall of which includes a second driving slope 2115. A driving pin 2127 that slides in cooperation with the oblique hole 2110 is installed in the hole 2128 of each release operation member 212. When any release operation member 212 is pressed, the driving pin 2127 presses against the second driving slope 2115 and drives the corresponding first locking member 211A to move toward the release position. Under the action of the first linkage assembly 25A and the linkage member 27, the other locking members 211 also move toward the release position.

[0508] There are many possible operable connection methods between the release operation member 212 and the corresponding locking member 211, and they are not limited to the examples mentioned above. For example, in some embodiments, the oblique hole 2110 and the second driving oblique surface 2115 can be provided on the release operation member 212, and the driving pin 2127 can be provided on the extension 2116. Alternatively, in some embodiments, both the release operation member 212 and the extension 2116 can be provided with the second driving oblique surface 2115, and the second driving oblique surface 2115 of the release operation member 212 and the second driving oblique surface 2115 of the extension 2116 abut against each other. In addition, in some alternative embodiments, the extension 2116 can be integrally formed with the corresponding first locking member 211A.

[0509] Of course, in some embodiments, the release operation member 212 can be mounted on the second base plate assembly 2B and operably connected to the corresponding second locking member 211B. The operable connection method between the release operation member 212 and the second locking member 211B can refer to the operable connection method between the release operation member 212 and the first locking member 211A described above. Additionally, in some embodiments, the card holder assembly 200 can be configured with only one release operation member 212, which can be mounted on the first base plate assembly 2A or th...

Claims

1. A wheeled mobile device, characterized in that, include: Frame; A mounting bracket assembly is mounted on the vehicle frame and used to engage a vehicle; the mounting bracket assembly includes at least one locking element having a locked position for locking the vehicle and an unlocked position for releasing the vehicle; An indicator device, mounted on the frame and / or the mounting bracket assembly, is used to indicate the operating status of the wheeled mobility device; the operating status includes whether the mounting bracket assembly is engaged with the vehicle, and / or whether the at least one locking member locks the vehicle.

2. The wheeled mobile device according to claim 1, characterized in that, The card holder assembly includes at least one engagement channel for engaging with the engagement component of the vehicle; The indicating device includes a first indicating device, which is used to indicate whether the at least one engaging member is engaged in the at least one engaging channel.

3. The wheeled mobile device according to claim 2, characterized in that, The first indicating device includes: a movable member installed in a slide communicating with the engagement channel; the movable member having an abutting end adapted to extend into the engagement channel; and a sliding member operably connected to the movable member and having an engagement indicating area; when the engagement member is engaged in the engagement channel, the abutting end is pushed out of the engagement channel by the engagement member, causing the movable member to drive the sliding member to slide, thereby changing the position of the engagement indicating area.

4. The wheeled mobile device according to claim 3, characterized in that, The frame includes a hollow rod, and the sliding member can slide within the rod. The rod is provided with an observation hole for observing the engagement indicator area, and the sliding member is connected to the movable member via a cable.

5. The wheeled mobile device according to claim 4, characterized in that, The first indicating device further includes a first reset member, which abuts against the sliding member to drive the sliding member to reset, so that the cable drives the abutting end to extend into the engagement channel.

6. The wheeled mobile device according to claim 5, characterized in that, The movable component has a connecting portion located outside the slide rail, and the cable is supported by a guide frame located outside the slide rail 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 rail.

7. The wheeled mobile device according to claim 6, characterized in that, The movable component has a snap-fit ​​end away from the abutting end; when the snap-fit ​​component is snapped into the snap-fit ​​channel and the locking component moves to the unlocking position, the snap-fit ​​end engages with the locking component, locking the locking component in the unlocking position.

8. The wheeled mobile device according to claim 1, characterized in that, The indicating device includes a second indicating device, the second indicating device including at least one release operating member, the at least one release operating member being operably connected to the at least one locking member, the at least one release operating member having a release identification area for indicating the position of the at least one locking member.

9. A support frame for supporting a base plate assembly, characterized in that, The support frame includes longitudinal rods, connecting rods, and shock-absorbing rods connected in a triangular structure; The longitudinal rod is adapted to be disposed below the seat assembly and fixedly connected to the seat 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 absorber; the second end of the shock absorber is connected to the longitudinal rod; the shock absorber is elastic to provide cushioning support to the seat assembly.

10. The support frame according to claim 9, characterized in that, The support frame further 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.

11. The support frame according to claim 9, characterized in that, The longitudinal rod includes a limiting finger disposed at a 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. And / or, the longitudinal rod includes a limiting protrusion disposed at a first end of the longitudinal rod, the limiting protrusion limiting the angle of upward pivoting of the longitudinal rod relative to the connecting rod by abutting against the connecting rod.

12. The support frame according to claim 9, characterized in that, The support frame also includes a limiting member, the first end of which is slidably connected to the longitudinal rod, and the second end of which is pivotally connected to the connecting rod.

Images