Infant carrier

Abstract

The utility model relates to an infant carrier which comprises a seat assembly, a frame body and a switching mechanism. The frame body has an unfolded state and a folded state, and the frame body is attached to the seat assembly. The switching mechanism is arranged between the seat assembly and the frame body and can drive the frame body to be switched between the unfolding state and the folding state. When the frame body is in the unfolded state, the infant carrier is suitable for being used as an infant stroller, and when the frame body is in the folded state, the infant carrier is suitable for being used as an automobile safety seat, a lifting basket or a rocking chair. According to the infant carrier, the seat assembly is installed on the frame body, the frame body can be switched between the unfolding state and the folding state through the switching mechanism, and therefore the infant carrier can be switched between the using mode of an infant stroller, the using mode of an automobile safety seat and the like, the structure is simple, and operation is convenient.

Description

[0001] This application is a divisional application of the original application date: January 18, 2024, the original application number: 2024201279270, and the original application name: infant carrier. TECHNICAL FIELD

[0002] The utility model relates to the technical field of the carrying device for infant, especially to an infant carrier. BACKGROUND

[0003] When going out, infants usually need both a stroller and a safety seat, but carrying both tools at the same time will increase the inconvenience of travel. Although there are some infant strollers on the market that can be converted into safety seats, they usually have complex structures and are inconvenient to use. SUMMARY

[0004] Therefore, it is necessary to provide an infant carrier that is simple in structure and easy to use.

[0005] In one aspect, the present application provides an infant carrier, which includes a seat assembly, a frame body, and a switching mechanism. The frame body has an expanded state and a collapsed state, and is attached to the seat assembly. The switching mechanism is arranged between the seat assembly and the frame body and can drive the frame body to switch between the expanded state and the collapsed state. When the frame body is in the expanded state, the infant carrier is suitable for use as an infant stroller, and when the frame body is in the collapsed state, the infant carrier is suitable for use as an automobile safety seat, a basket, or a rocking chair.

[0006] In the infant carrier, the seat assembly is installed on the frame body, and the switching mechanism can realize the conversion of the frame body between the expanded state and the collapsed state, thereby realizing the conversion of the infant carrier between the infant stroller and the automobile safety seat and other use modes. The structure is simple and easy to operate.

[0007] In one embodiment, the switching mechanism includes:

[0008] a linkage assembly connected between the frame body and the seat assembly; and

[0009] a locking assembly that can be operated to switch between a locked state and an unlocked state. When the locking assembly is in the locked state, it can lock the frame body in the expanded state. When the locking assembly is in the unlocked state, it can switch the frame body from the expanded state to the collapsed state through the linkage assembly.

[0010] In one of the embodiments, the frame body comprises a first support frame and a second support frame which are pivotally connected to each other, and the switching mechanism comprises a linkage assembly which comprises a first linkage rod and a second linkage rod, both ends of the first linkage rod are pivotally connected to the first support frame and the seat assembly respectively, and both ends of the second linkage rod are pivotally connected to the second support frame and the seat assembly respectively.

[0011] In one of the embodiments, the switching mechanism comprises a locking assembly which comprises:

[0012] a first locking member which is movably connected to one of the seat assembly and the frame body and is used for locking the frame body in an unfolded state; and

[0013] a folding button which is connected to the other one of the seat assembly and the frame body and can be operated to drive the first locking member to unlock the frame body.

[0014] In one of the embodiments, the frame body comprises:

[0015] a first support frame which comprises two first support rods; and

[0016] a second support frame which comprises two second support rods;

[0017] wherein the two first support rods are pivotally connected to the two second support rods respectively, each of the first support rods is pivotally connected to each of the second support rods at an eighth pivot point, the eighth pivot point is slidingly connected to the seat assembly, and the folding button is attached to the eighth pivot point.

[0018] In one of the embodiments, the locking assembly further comprises a fixing seat which is fixed to the seat assembly, the fixing seat has a second accommodating cavity and an open slot which is in communication with the second accommodating cavity, the first locking member has a locking protrusion, the first locking member is at least partially movably arranged in the second accommodating cavity, and the locking protrusion can extend out of the second accommodating cavity through the open slot to engage with the folding button to lock the frame body in the unfolded state.

[0019] In one of the embodiments, the first locking member is pivotally connected to the fixing seat at a seventh pivot point, and the seventh pivot point is located in the second accommodating cavity.

[0020] In one of the embodiments, the first locking member further comprises a resilient arm, the locking protrusion and the resilient arm are located on two sides of the seventh pivot point respectively, and the resilient arm always causes the locking protrusion to pivot towards the direction of extending out of the open slot.

[0021] In one of the embodiments, the folding button comprises:

[0022] a connecting portion fixedly connected with the frame body and slidably connected with the seat assembly; and

[0023] an operating portion operable to unlock the first locking member from the frame body.

[0024] In one embodiment, the folding button further comprises:

[0025] a locking recess between the connecting portion and the operating portion;

[0026] wherein the first locking member has a locking protrusion capable of being engaged with the locking recess to lock the frame body in an unfolded state, and the locking protrusion is capable of being disengaged from the locking recess to unlock the frame body from the unfolded state.

[0027] In one embodiment, a pushing protrusion is provided on a side of the operating portion facing the first locking member, and when the operating portion is pressed, the pushing protrusion is capable of pushing the first locking member to unlock the frame body.

[0028] In one embodiment, the frame body comprises:

[0029] a first support frame comprising two first support rods; and

[0030] a second support frame comprising two second support rods;

[0031] wherein the two first support rods are respectively pivotally connected with the two second support rods.

[0032] In one embodiment, the first support frame and the second support frame are both made of aluminum pipes.

[0033] In one embodiment, the infant carrier further comprises:

[0034] wheel bodies respectively rotatably attached to the first support frame and the second support frame;

[0035] wherein each of the first support rods and each of the second support rods are pivotally connected at an eighth pivot point, and when the frame body is in the folded state, a line connecting the center of the wheel body and the eighth pivot point is parallel to a horizontal reference plane, which is an imaginary horizontal cross-section of the bottom of the seat assembly.

[0036] In one embodiment, each of the first support rods and each of the second support rods are pivotally connected at an eighth pivot point, and the eighth pivot point is slidably connected with the seat assembly.

[0037] In one of the embodiments, the sliding path of the eighth pivot point is inclined upward along the front-to-back direction.

[0038] In one of the embodiments, each of the first support rods and each of the second support rods is pivoted to an eighth pivot point, the eighth pivot point is located at a first position of the seat assembly when the frame is in the unfolded state, and the eighth pivot point is located at a second position of the seat assembly when the frame is in the folded state.

[0039] In one of the embodiments, the first position is closer to a horizontal reference plane than the second position, the horizontal reference plane being an imaginary horizontal plane of the lowest part of the seat assembly.

[0040] In one of the embodiments, the first position is closer to a vertical reference plane than the second position, the vertical reference plane being an imaginary vertical plane of the frontmost end of the seat assembly.

[0041] In one of the embodiments, the infant carrier further comprises:

[0042] A wheel body is rotatably attached to the first support frame and the second support frame, respectively, the wheel body attached to the first support frame and the wheel body attached to the second support frame coincide when the frame is in the folded state.

[0043] In one of the embodiments, each of the first support rods and each of the second support rods is pivoted to an eighth pivot point, the infant carrier further comprises a moving assembly, the moving assembly is mounted on the seat assembly, one end of the moving assembly is pivoted to a ninth pivot point on the seat assembly, and the ninth pivot point is spaced apart from the eighth pivot point.

[0044] In one of the embodiments, the seat assembly has a folding limiting part, the folding limiting part is engaged with the frame to lock the frame in the folded state when the frame is in the folded state.

[0045] In one of the embodiments, the infant carrier further comprises a moving assembly, the moving assembly is mounted on the seat assembly, the moving assembly can serve as a handle when the frame is in the unfolded state, and the moving assembly can serve as a carrying handle when the frame is in the folded state.

[0046] In one of the embodiments, the moving assembly is substantially in a U-shaped structure, comprising a moving body and moving rods connected to both ends of the moving body.

[0047] In one of the embodiments, the length of the moving rods is adjustable.

[0048] In one of the embodiments, the mobile rod comprises a first rod part, a second rod part, and a length adjustment mechanism, the first rod part is partially inserted into the second rod part, and the length adjustment mechanism is arranged between the first rod part and the second rod part, and the length adjustment mechanism can adjust the length of the first rod part inserted into the second rod part.

[0049] In one of the embodiments, the length adjustment mechanism comprises:

[0050] a locking pin movably arranged in one of the first rod part and the second rod part; and

[0051] a plurality of locking holes arranged in the other of the first rod part and the second rod part and arranged along the length direction of the other of the first rod part and the second rod part;

[0052] wherein the locking pin has a first locking position and a first unlocking position, the locking pin can be cooperated with one of the plurality of locking holes when the locking pin is in the first locking position, and the locking pin can be disengaged from one of the plurality of locking holes when the locking pin is in the first unlocking position.

[0053] In one of the embodiments, the length adjustment mechanism further comprises:

[0054] an operation assembly arranged in the other of the first rod part and the second rod part, the operation assembly can be operated to drive the locking pin to move in a direction away from one of the plurality of locking holes.

[0055] In one of the embodiments, the operation assembly and at least part of the locking pin are arranged in the first rod part, and the operation assembly comprises:

[0056] a pull rod;

[0057] a length adjustment operation member arranged at one end of the pull rod; and

[0058] a driving plug fixed at the end of the pull rod away from the length adjustment operation member, the driving plug has a driving inclined slot;

[0059] wherein the locking pin is provided with a driving protruding column, the driving protruding column is inserted into the driving inclined slot and can move along the driving inclined slot, and the length adjustment operation member can be operated to move along the length direction of the first rod part, so that the driving pin is moved from the first locking position to the first unlocking position under the action of the driving protruding column and the driving inclined slot.

[0060] In one of the embodiments, the length adjustment mechanism further comprises:

[0061] A fixing plug is fixed in the first rod part and has a first through hole and a second through hole which are in communication with each other and have directions of extension crossing each other;

[0062] The locking pin is movably arranged in the first through hole, and the driving protruding column is inserted into the driving inclined slot through the second through hole.

[0063] In one of the embodiments, the fixing plug is further provided with a first sliding slot which is in communication with the first through hole and the second through hole and has a direction of extension crossing that of the first through hole and the second through hole, and the part of the driving plug provided with the driving inclined slot is inserted into the first sliding slot and can slide relative to the driving plug in the direction of the first rod part.

[0064] In one of the embodiments, the length adjustment mechanism further comprises a first reset member which always moves the driving plug in the direction of driving the locking pin to the first locking position.

[0065] In one of the embodiments, the infant carrier further comprises an angle adjustment mechanism which is arranged between the seat assembly and the moving assembly and is used to adjust the inclination angle of the moving assembly relative to the seat assembly.

[0066] In one of the embodiments, the angle adjustment mechanism comprises:

[0067] A moving connecting seat is fixedly connected with the moving assembly and has a first locking part;

[0068] A seat connecting seat is fixedly connected with the seat assembly and has a second locking part;

[0069] A third locking part is movably arranged between the moving connecting seat and the seat connecting seat, and the third locking part has a second locking position and a second unlocking position;

[0070] The moving connecting seat and the seat connecting seat are pivotally connected with each other, the third locking part is locked with the first locking part and the second locking part at the same time when the third locking part is in the second locking position, so that the moving connecting seat and the seat connecting seat are relatively fixed, and the third locking part can be disengaged with one of the first locking part and the second locking part when the third locking part is in the second unlocking position, so that the moving connecting seat can rotate relative to the seat connecting seat.

[0071] In one of the embodiments, the third locking part is a locking gear, and the first locking part and the second locking part are gear grooves which can be engaged with the locking gear.

[0072] In one of the embodiments, the angle adjustment mechanism further comprises an angle adjustment operation member, which is drivingly connected with the third locking portion, and which can be operated to drive the third locking portion to move to the second unlocking position.

[0073] In one of the embodiments, the angle adjustment mechanism further comprises a second reset member, which has two ends respectively abutting against the third locking portion and the seat connecting base, and which always drives the angle adjustment operation member to move in a direction to drive the third locking portion to move to the second locking position.

[0074] In one of the embodiments, the infant carrier further comprises:

[0075] A wheel assembly comprising a wheel mounting frame connected with the frame body and a wheel body rotatably mounted on the wheel mounting frame; and

[0076] A brake mechanism arranged between the frame body and the wheel assembly, and having a braking state to prevent the wheel assembly from rotating and an unbraking state to allow the wheel assembly to rotate.

[0077] In one of the embodiments, the brake mechanism comprises:

[0078] A brake lever movably arranged on the frame body and having a third locking position and a third unlocking position;

[0079] The wheel body is provided with a plurality of first brake holes in the circumferential direction, the brake lever can be inserted into one of the first brake holes when the brake lever is in the third locking position, and the brake lever is disengaged from one of the first brake holes when the brake lever is in the third unlocking position.

[0080] In one of the embodiments, the brake mechanism further comprises:

[0081] A brake operation member movably arranged on the frame body; and

[0082] A brake pushing member movably arranged on the frame body and fixedly connected with the brake lever.

[0083] The brake operation member can be operated to drive the brake pushing member to move the brake lever to the third unlocking position.

[0084] In one of the embodiments, the frame body comprises a first connecting assembly connected with the wheel mounting frame, the brake operation member is rotatably arranged on the first connecting assembly, and the brake pushing member is movably arranged on the first connecting assembly.

[0085] In one of the embodiments, the brake operating member is provided with a first cooperating part, the brake pushing member is provided with a second cooperating part and a third cooperating part, the brake operating member has a first rotation position and a second rotation position, when the brake operating member is rotated to the first rotation position, the first cooperating part cooperates with the second cooperating part, the brake pushing member moves to make the brake lever be located at the third locking position, when the brake operating member is rotated to the second rotation position, the first cooperating part cooperates with the third cooperating part, the brake pushing member moves to make the brake lever be located at the third releasing position.

[0086] In one of the embodiments, the brake operating member has a pushing rib, the brake pushing member is provided with a positioning groove and a brake groove, the groove bottom of the brake groove is away from the groove bottom of the positioning groove relative to the wheel body, the brake operating member has a first rotation position and a second rotation position, when the brake operating member is rotated to the first rotation position, the pushing rib cooperates with the positioning groove, the brake pushing member moves to make the brake lever be located at the third locking position, when the brake operating member is rotated to the second rotation position, the pushing rib cooperates with the brake groove, the brake pushing member moves to make the brake lever be located at the third releasing position.

[0087] In one of the embodiments, the brake operating member has an installation cavity, the pushing rib is arranged in the installation cavity, the brake pushing member is movably arranged in the installation cavity.

[0088] In one of the embodiments, the brake pushing member is provided with a first mark and a second mark, the brake operating member is provided with a display window which is communicated with the installation cavity, when the brake lever is located at the third locking position, the first mark is opposite to the display window, when the brake lever is located at the third releasing position, the second mark is opposite to the display window.

[0089] In one of the embodiments, the brake mechanism further comprises a third reset member, the third reset member always makes the brake lever move to the third locking position.

[0090] In one of the embodiments, the first connecting assembly comprises:

[0091] a connecting sleeve which is fixed on the wheel mounting frame and can be communicated with one of the first brake holes through the communicating hole on the wheel mounting frame; and

[0092] a connecting rod which is partially inserted into the connecting sleeve, the brake operating member is rotatably arranged on the connecting rod, and the brake pushing member is movably arranged on the connecting rod.

[0093] In one of the embodiments, the brake mechanism further comprises a third reset member, which is arranged in the connecting rod and abuts against the brake pushing member, and the third reset member constantly moves the brake lever to the third locking position.

[0094] In one of the embodiments, the brake mechanism further comprises a third reset member, which is arranged in the connecting rod and abuts against the brake pushing member, and the third reset member constantly moves the brake lever to the third locking position.

[0095] In one of the embodiments, the first connecting assembly comprises:

[0096] two connecting sleeves, which are respectively fixed on the two wheel mounting frames and can be communicated with one of the plurality of first brake holes on the corresponding wheel body through the communication holes on the two wheel mounting frames; and

[0097] a connecting rod, both ends of which are respectively inserted into the connecting sleeves, and the brake operating member is rotatably arranged on the connecting rod, and both the brake pushing members are movably arranged on the connecting rod.

[0098] In one of the embodiments, the brake mechanism further comprises a third reset member, which is arranged in the connecting rod and abuts against the brake pushing member, and the third reset member constantly moves the brake lever to the third locking position.

[0099] In one of the embodiments, the brake operating member comprises a first pedal and a second pedal connected with each other.

[0100] In one of the embodiments, the first pedal has an elastic finger, and the second pedal has a fixing hole, and the elastic finger can be detachably matched with the fixing hole.

[0101] Another aspect of the present application provides an infant carrier, comprising a carrying body, a moving assembly, a length adjusting mechanism, an angle adjusting mechanism, and at least one of a first limiting mechanism and a second limiting mechanism;

[0102] The moving assembly is pivotally connected to the carrying body and is telescopic.

[0103] The length adjusting mechanism is arranged on the moving assembly and is used to adjust the telescopic movement of the moving assembly so that the moving assembly can be switched between an extended state and a retracted state.

[0104] The angle adjusting mechanism is arranged between the moving assembly and the carrying body and is used to adjust the pivoting of the moving assembly relative to the carrying body.

[0105] When the moving assembly is in the retracted state and can rotate relative to the carrying body, the first limiting mechanism locks the length adjusting mechanism to limit the telescopic movement of the moving assembly, and when the moving assembly is rotated to a preset angle, the first limiting mechanism releases the lock on the length adjusting mechanism so that the moving assembly can be switched between the extended state and the retracted state.

[0106] When the moving assembly is switched to the extended state, the second limiting mechanism locks the angle adjusting mechanism to limit the pivoting of the moving assembly, and when the moving assembly is switched to the retracted state, the second limiting mechanism releases the lock on the angle adjusting mechanism and the moving assembly can pivot.

[0107] In one embodiment, the first limiting mechanism comprises:

[0108] A second locking member is arranged on the moving assembly.

[0109] A first driving member is arranged on the carrying body and has a release portion.

[0110] At least part of the first driving member can drive the second locking member to move and lock the length adjusting mechanism, and the second locking member can cooperate with the release portion to release the lock on the length adjusting mechanism.

[0111] In one embodiment, when the moving assembly rotates relative to the carrying body, the first driving member drives the second locking member to move in the transverse direction of the carrying body and lock the length adjusting mechanism.

[0112] In one embodiment, the first driving member is a pushing rib arranged on the carrying body and protruding towards one side of the moving assembly.

[0113] In one of the embodiments, the pushing rib is an arc-shaped rib, and the arc-shaped direction of the arc-shaped rib is consistent with the arc-shaped direction of the pivoting of the moving assembly.

[0114] In one of the embodiments, the second locking member is a limiting post, and the limiting post is provided with a locking end and an abutting end. When the moving assembly rotates, the pushing rib pushes the abutting end to drive the locking end to move towards the length adjustment mechanism to be locked on the length adjustment mechanism.

[0115] In one of the embodiments, the release part is a release slot arranged on the first driving member. When the moving assembly rotates to the preset angle, the abutting end is located in the release slot, the locking end is separated from the length adjustment mechanism, and the moving assembly can be switched between the retracted state and the extended state.

[0116] In one of the embodiments, the first limiting mechanism further comprises a first elastic member. When the moving assembly rotates to the preset angle, the elastic restoring force of the first elastic member drives the locking end to move and separate from the length adjustment mechanism, so as to drive the abutting end to be arranged in the release slot.

[0117] In one of the embodiments, one end of the first elastic member abuts against the limiting post, and the other end abuts against the side wall of the moving assembly.

[0118] In one of the embodiments, the abutting end is provided with a stroke slot, and a limiting pin is arranged in the stroke slot. At least one end of the limiting pin is fixed to the moving assembly. The stroke slot and the limiting pin cooperate to limit the movement stroke of the limiting post.

[0119] In one of the embodiments, the second limiting mechanism comprises:

[0120] a second driving member, which is selectively in abutment with or separated from the length adjustment mechanism; and

[0121] a fifth locking member, which is provided with a clamping end clamped on the second driving member and a stop end for preventing the pivoting of the angle adjustment mechanism.

[0122] In one of the embodiments, the second driving member is provided with a buckle hole, and the clamping end is provided with a hook which is hooked in the buckle hole.

[0123] In one of the embodiments, the second driving member is pivoted in the moving assembly. The second driving member is provided with the clamping end on one side of the pivoting point and is in abutment with a fourth reset member on the other side of the pivoting point.

[0124] In one of the embodiments, the mobile assembly is provided with a fixing seat, and an end of the fourth reset member away from the second driving member is fixed on the fixing seat. The fixing seat is provided with a through hole, and the stop end penetrates through the through hole.

[0125] In one of the embodiments, the angle adjusting mechanism comprises a pivot button. When the first limiting mechanism locks the length adjusting mechanism, the stop end moves to the pressing path of the pivot button, blocks the pressing of the pivot button, and locks the angle adjusting mechanism from adjusting the angle of the mobile assembly.

[0126] In one of the embodiments, the length adjusting mechanism comprises:

[0127] a driving block, which is selectively pressed against or separated from the second driving member; and

[0128] a length adjusting handle connected with the driving block.

[0129] When the first limiting mechanism locks the length adjusting mechanism, the length adjusting handle drives the driving block to separate from the second driving member, and the second driving member drives the stop end to block the movement of the angle adjusting mechanism. When the first limiting mechanism unlocks the length adjusting mechanism, the driving block presses against the second driving member, and the second driving member drives the stop end to disengage from the angle adjusting mechanism.

[0130] In one of the embodiments, the length adjusting mechanism further comprises:

[0131] a positioning block movably arranged on the driving block, which is used to position the mobile assembly in the extended state or the retracted state.

[0132] In one of the embodiments, the length adjusting handle is provided with a second sliding groove, the positioning block is provided with a sliding pin, and the driving block is provided with a through slot. When the length adjusting handle moves, the sliding pin slides in the second sliding groove, drives the positioning block to extend out of the through slot to position the mobile assembly in the extended state or the retracted state, or drives the positioning block to retract into the through slot to disengage from the positioning of the mobile assembly.

[0133] In one of the embodiments, the moving assembly includes a first handle and a second handle sleeved outside the first handle, one of the first handle and the second handle is provided with at least one first gear hole, the other of the first handle and the second handle is provided with at least two second gear holes, the positioning block can be extended to be clamped in a certain first gear hole and a certain second gear hole to position the relative position of the first handle and the second handle, or withdrawn from the gear hole to retract the through slot, and the positioning of the relative position of the first handle and the second handle is released.

[0134] In one of the embodiments, the first handle is provided with an adjusting slide which is slidable along the first handle, and the adjusting slide is connected with the length adjusting handle.

[0135] In one of the embodiments, at least part of the first handle is located above the second handle, a lower end of the second handle is connected with a handle joint for being pivoted with the carrying body, the first limiting mechanism includes a second locking member which is selectively locked or released from the length adjusting mechanism, and the second locking member is arranged on the handle joint.

[0136] In one of the embodiments, the infant carrier further includes a frame body which is pivotally connected with the carrying body, the frame body is switchable between an unfolded state and a folded state, when the frame body is in the unfolded state, the infant carrier is in a stroller mode, and when the frame body is in the folded state, the infant carrier is in a rocking chair mode, a basket mode or a car safety seat mode.

[0137] In yet another aspect, the present application provides an infant carrier, the infant carrier comprising:

[0138] a seat assembly;

[0139] a frame body which is switchable between an unfolded state and a folded state, the frame body being connected with the seat assembly; and

[0140] a base connected to the frame body;

[0141] wherein the infant carrier is adapted to be used as a stroller when the frame body is in the unfolded state, and the infant carrier is adapted to be used as a safety seat when the frame body is in the folded state, and

[0142] the base is closer to the seat assembly when the frame body is switched from the unfolded state to the folded state.

[0143] In one of the embodiments, the frame body includes:

[0144] a rear support including an upper rear leg and a lower rear leg, the upper rear leg being pivotably connected with the lower rear leg, and the upper rear leg being pivotably connected with the seat assembly;

[0145] a front support including an upper front leg and a lower front leg, the upper front leg being pivotably connected with the lower front leg, and the upper front leg being pivotably connected with the upper rear leg,

[0146] wherein the rear support and the front support are each pivotably connected with the base.

[0147] In one embodiment, the lower rear leg includes a first lower rear leg and a second lower rear leg, and the rear support further includes a first link, both ends of the first link being connected with the first lower rear leg and the second lower rear leg, respectively, and the base is pivotably connected with the first link.

[0148] In one embodiment, at least a portion of the base is located between the first lower rear leg and the second lower rear leg, and the first link is arranged to pass through the portion of the base.

[0149] In one embodiment, the lower front leg includes a first lower front leg and a second lower front leg, and the front support further includes a second link, both ends of the second link being connected with the first lower front leg and the second lower front leg, respectively, and the base is pivotably connected with the second link.

[0150] In one embodiment, the infant carrier further includes a deployment locking mechanism, the deployment locking mechanism including:

[0151] a second sliding pin slidably disposed on the seat assembly and fixedly connected with the frame;

[0152] a first stopper pivotably connected with the seat assembly, the first stopper having a first stopper hook portion adapted to engage with the second sliding pin to prevent the second sliding pin from sliding relative to the seat assembly, such that the pivoting of the frame relative to the seat assembly is inhibited and locked in the deployed state.

[0153] In one embodiment, the deployment locking mechanism further includes a first connector, and the second sliding pin is connected with the frame via the first connector.

[0154] In one of the embodiments, the unfolding locking mechanism further comprises an unfolding locking mechanism spring disposed between the first stopper and the seat assembly, the unfolding locking mechanism spring adapted to bias the first stopper to pivot towards the second sliding pin such that the first stopper hook engages with the second sliding pin.

[0155] In one of the embodiments, the seat assembly comprises a seat, the seat having a slot disposed thereon, the second sliding pin being inserted into the slot and slidable along the slot.

[0156] In one of the embodiments, the seat assembly comprises a seat and a connecting piece connected to the seat, the connecting piece having a slot disposed thereon, the second sliding pin being inserted into the slot and slidable along the slot.

[0157] In one of the embodiments, the infant carrier further comprises an unfolding locking release mechanism adapted to drive the first stopper to pivot in a direction away from the second sliding pin to disengage the first stopper hook from the second sliding pin.

[0158] In one of the embodiments, the unfolding locking release mechanism comprises a first operating member connected to the first stopper, the first operating member being operatively disposed on the seat assembly, the first operating member adapted to drive the first stopper to pivot in a direction away from the second sliding pin to disengage the first stopper hook from the second sliding pin when operated.

[0159] In one of the embodiments, the unfolding locking release mechanism further comprises a first pulling member, one end of the first pulling member being connected to the first operating member and the other end being connected to the first stopper.

[0160] In one of the embodiments, the seat assembly comprises a seat, the seat comprising a seat body and a seat shell, the seat body and the seat shell enclosing a first receiving cavity, the seat shell having a first opening disposed thereon, the first opening being disposed through the seat shell;

[0161] The first operating member comprises a first connecting portion and a first operating portion connected to the first connecting portion, the first connecting portion being inserted into the first receiving cavity and connected to the first stopper, at least a portion of the first operating portion being movable through the first opening and along the first opening.

[0162] In one of the embodiments, the seat assembly comprises a seat, the seat comprises a seat body and a seat shell, the seat body and the seat shell enclose a first accommodating cavity, at least a part of the unfolding locking mechanism is accommodated in the first accommodating cavity.

[0163] In one of the embodiments, the infant carrier further comprises a folding locking mechanism, the folding locking mechanism comprises:

[0164] a fixed rod connected with the seat assembly; and

[0165] a locking member pivotally connected with the base, the locking member is adapted to engage with the fixed rod to lock the frame in the folded state.

[0166] In one of the embodiments, the folding locking mechanism further comprises a folding locking mechanism spring, the folding locking mechanism spring is adapted to bias the locking member to pivot towards the fixed rod so that the locking member engages with the fixed rod.

[0167] In one of the embodiments, the base comprises a base body and a locking member pivot shaft arranged on the base body, the locking member is pivotally connected with the base body through the locking member pivot shaft.

[0168] In one of the embodiments, the base body comprises a first shell and a second shell, the first shell and the second shell enclose a fourth accommodating cavity, the second shell is provided with a second opening, the second opening is arranged through the second shell, the locking member pivot shaft is located in the fourth accommodating cavity and fixedly connected with the first shell,

[0169] the locking member further comprises a locking member connecting portion and a locking member hook portion, the locking member connecting portion is connected with the locking member hook portion, the locking member connecting portion is pivotally connected with the locking member pivot shaft, the locking member hook portion passes through the second opening and extends out of the fourth accommodating cavity, the locking member engages with the fixed rod through the locking member hook portion.

[0170] In one of the embodiments, the folding locking mechanism further comprises a folding locking mechanism spring and a fixing member, the fixing member is fixedly connected on the locking member pivot shaft, the folding locking mechanism spring is arranged between the fixing member and the locking member, the folding locking mechanism spring is adapted to bias the locking member to pivot towards the fixed rod so that the locking member hook portion engages with the fixed rod.

[0171] In one of the embodiments, the infant carrier further comprises a folding lock releasing mechanism adapted to drive the locking member to pivot in a direction away from the fixing rod to disengage the locking member from the fixing rod.

[0172] In one of the embodiments, the folding lock releasing mechanism comprises a second operating member connected with the locking member, the second operating member being operatively arranged on the base, the second operating member being adapted to drive the locking member to pivot in a direction away from the fixing rod to disengage the locking member from the fixing rod when operated.

[0173] In one of the embodiments, the locking member comprises a fourth locking member and a fifth locking member, and a second connecting member connected between the fourth locking member and the fifth locking member, two ends of the second connecting member being connected with the fourth locking member and the fifth locking member respectively, the second operating member being connected with the second connecting member.

[0174] In one of the embodiments, the base comprises a base support and an ISOFIX connector connected with the base support, the ISOFIX connector being adapted to be attached to an ISOFIX interface in a vehicle.

[0175] In one of the embodiments, the base further comprises a slide rod, one end of the slide rod being connected with the ISOFIX connector, and the other end of the slide rod being slidably connected with the base support.

[0176] The infant carrier further comprises an adjusting device adapted to releasably lock the slide rod to the base support.

[0177] In one of the embodiments, the slide rod is provided with a plurality of adjusting holes.

[0178] The adjusting device comprises a second stop member movably arranged on the base and adapted to lock the slide rod to the base support.

[0179] The base support is correspondingly provided with a stop hole, one end of the second stop member being adapted to pass through the stop hole and be inserted into one of the adjusting holes in the slide rod to releasably lock the slide rod to the base support.

[0180] In one of the embodiments, the base further comprises a first housing and a second housing, the first housing and the second housing enclosing a fourth accommodating cavity, the base support and the adjusting device being accommodated in the fourth accommodating cavity and connected with the first housing, a part of the slide rod being accommodated in the fourth accommodating cavity and slidably connected with the base support.

[0181] In one embodiment, the base support further comprises a sliding sleeve connected to the base support, the sliding sleeve being provided with a third through hole, one end of the slide rod being slidably connected to the base support through the third through hole.

[0182] In one embodiment, the adjustment device further comprises a third operating member operatively provided on the base and connected to the second stop member, the third operating member being adapted to drive the second stop member to move synchronously to lock or release the slide rod to or from the base support.

[0183] In one embodiment, the third operating member is provided with a first driving slot, the other end of the second stop member is provided with a first driving pin, the first driving pin is inserted into and movable along the corresponding first driving slot.

[0184] In one embodiment, the first driving slot has a first position and a second position, when the first driving pin is in the first position in the first driving slot, the slide rod is locked to the base support, and when the first driving pin is in the second position in the first driving slot, the slide rod is released from the base support.

[0185] In one embodiment, the adjustment device further comprises a fixing seat connected to the base, the fixing seat being provided with a third guide slot configured to guide the movement of the second stop member, the first driving pin being inserted into and movable along the third guide slot.

[0186] In one embodiment, the adjustment device further comprises an adjustment device elastic member adapted to bias the third operating member to make the third operating member be in an initial position when not being operated.

[0187] In one embodiment, the seat assembly comprises a safety belt positioning device having a safety belt clamping slot, when the infant carrier is in the form of a safety seat, a safety belt at a vehicle seat is adapted to pass through the safety belt clamping slot to fix the infant carrier to the seat.

[0188] In one embodiment, the infant carrier further comprises:

[0189] a plurality of wheel assemblies connected to the frame body;

[0190] Each wheel assembly comprises a wheel, when the frame body is in the collapsed state, the lowest point of the wheel is higher than the bottom surface of the base.

[0191] In one of the embodiments, each of the wheel assemblies further comprises a mudguard, the mudguard is positioned below the wheel when the frame is in the collapsed state, and the lowest point of the mudguard is equal to or higher than the bottom surface of the base.

[0192] In one of the embodiments, the infant carrier further comprises:

[0193] a plurality of wheels, the infant carrier in the unfolded state in the form of a stroller is adapted to move by rotation of the plurality of wheels; and

[0194] a brake mechanism, switchable between a locked state and an unlocked state, when the brake mechanism is in the locked state, at least one predetermined wheel of the plurality of wheels is unable to rotate, and when the brake mechanism is in the unlocked state, the at least one predetermined wheel is able to rotate.

[0195] In one of the embodiments, the predetermined wheel is provided with a plurality of second brake holes circumferentially along the hub thereof, the brake mechanism comprises a locking pin movably provided in the frame, the locking pin is movable between an unlocked position and a locked position, the locking pin has a locking end, when the locking pin is in the locked position, the locking end of the locking pin protrudes from the frame and engages with one of the plurality of second brake holes, and when the locking pin is in the unlocked position, the locking end of the locking pin disengages with one of the plurality of second brake holes.

[0196] In one of the embodiments, the hub of the predetermined wheel is provided with a plurality of protruding posts, each of the protruding posts is provided with the second brake hole at an end facing the frame.

[0197] In one of the embodiments, the brake mechanism further comprises a pedal member, the pedal member is pivotably provided in the base, the pedal member is pivotable between a travel position and a stop position, when the pedal member is pivoted from the travel position to the stop position, the pedal member is adapted to drive the locking pin to move from the unlocked position to the locked position, and when the pedal member is pivoted from the stop position to the travel position, the pedal member is adapted to drive the locking pin to move from the locked position to the unlocked position.

[0198] In one of the embodiments, the brake mechanism further comprises a third driving member movably provided in the frame to drive the locking pin to move, the pedal member is connected with the third driving member to drive the third driving member to move.

[0199] In one of the embodiments, the third driving member has a driving surface, the locking pin has a second connecting end, the second connecting end of the locking pin is provided with a second driving pin, the second driving pin is in abutment with the driving surface, and the driving surface is configured to cause the second driving pin to move when the third driving member moves, so as to drive the locking pin to move between the release position and the locking position.

[0200] In one of the embodiments, the brake mechanism further comprises a second traction member, one end of the second traction member is connected with the pedal member, and the other end of the second traction member is connected with the third driving member.

[0201] In one of the embodiments, the brake mechanism further comprises:

[0202] a first brake mechanism elastic member arranged between the third driving member and the frame body and adapted to bias the third driving member, so that the locking pin can move to the locking position; and

[0203] a second brake mechanism elastic member arranged between the frame body and the locking pin and adapted to bias the locking pin to move to the locking position.

[0204] In one of the embodiments, the base comprises a base body and a brake connecting portion connected with the base body, the brake connecting portion is provided with a clamping convex,

[0205] the pedal member is pivotally connected with the brake connecting portion, the pedal member is provided with at least two clamping concaves in communication with each other, the clamping convex can be clamped with any of the clamping concaves, and a spring is arranged between two adjacent clamping concaves and can lock the clamping convex in the required clamping concave, so that the pedal member is locked in the traveling position or the stopping position, and the pedal member can be operated to overcome the elastic force of the spring, so that the clamping convex is clamped with a different clamping concave.

[0206] In one of the embodiments, the infant carrier further comprises a moving assembly connected with the seat assembly and rotatable relative to the seat assembly.

[0207] In one of the embodiments, the infant carrier further comprises a moving assembly pivotally connected to the seat assembly, the moving assembly comprises:

[0208] two connecting arms pivotally connected to the seat assembly on opposite sides of the seat assembly;

[0209] a U-shaped handle body, two ends of the handle body respectively have adjusting portions, and the two adjusting portions are respectively connected to the two connecting arms and are slidable relative to the two connecting arms;

[0210] a length adjustment mechanism, switchable between a locked state and an unlocked state, when the length adjustment mechanism is in the unlocked state, the adjustment portion is slidable relative to the connecting arm, and when the length adjustment mechanism is in the locked state, the adjustment portion is fixed relative to the connecting arm.

[0211] In one embodiment, the length adjustment mechanism comprises:

[0212] a positioning member movably disposed in the adjustment portion and switchable between an extended position and a retracted position,

[0213] a plurality of positioning holes disposed in the connecting arm, when the positioning member is in the extended position, the positioning member is engaged with at least one of the plurality of positioning holes, and when the positioning member is in the retracted position, the positioning member is disengaged from the at least one of the plurality of positioning holes.

[0214] In one embodiment, the length adjustment mechanism further comprises a pull handle connected to the positioning member, the pull handle being operable to drive the positioning member to switch between the extended position and the retracted position.

[0215] In one embodiment, the length adjustment mechanism further comprises a pull rod, one end of the pull rod being connected to the pull handle, and the other end of the pull rod being connected to the positioning member.

[0216] one of the pull rod and the positioning member is provided with a second driving slot, the other of the pull rod and the positioning member is provided with a third driving pin, the third driving pin is inserted into the second driving slot and is movable along the second driving slot, the extension direction of the second driving slot is staggered and not perpendicular to the movement direction of the positioning member, and the extension direction of the second driving slot is staggered and not perpendicular to the movement direction of the pull rod.

[0217] In one embodiment, the connecting arm is provided with a first hollow cavity for accommodating the adjustment portion, the adjustment portion is provided with a second hollow cavity, the adjustment portion is provided with a third slot, the third slot is disposed through the side wall of the second hollow cavity, the pull handle is disposed around at least part of the outer circumference of the adjustment portion and is movable along the adjustment portion, the pull rod is disposed in the second hollow cavity, and at least part of the pull rod is connected to the pull handle through the third slot.

[0218] In one embodiment, the length adjustment mechanism further comprises a guide seat, at least part of the guide seat is disposed in the adjustment portion, and is provided with a fourth slot, the third driving pin is connected to the positioning member and is inserted into the second driving slot through the fourth slot.

[0219] In one embodiment, the guide seat is provided with a third sliding groove communicating with the fourth strip hole, and the positioning member is movably disposed in the third sliding groove.

[0220] In one embodiment, the length adjustment mechanism further includes a length adjustment mechanism elastic element disposed between the guide seat and the pull rod, the length adjustment mechanism elastic element being adapted to bias the pull rod so that the positioning element is held in the extended position.

[0221] In one embodiment, the pull rod includes a drive connection part, an operation connection part, and a connecting rod part connected between the drive connection part and the operation connection part. The drive connection part is provided with a second drive groove and an abutment part. The guide seat is provided with a receiving groove. At least a portion of the abutment part is located in the receiving groove. The elastic element of the length adjustment mechanism is disposed in the receiving groove and abuts against the abutment part.

[0222] In one embodiment, the adjustment part is provided with a limiting member configured to prevent the handle body from being completely removed from the connecting arm.

[0223] In one embodiment, the connecting arm is provided with a first hollow cavity for accommodating the adjustment part, and the moving assembly further includes a handle fixing seat, the handle fixing seat being fixedly connected to the end of the connecting arm, and at least a portion of the handle fixing seat being inserted into the first hollow cavity, and the adjustment part being slidably connected to the connecting arm through the handle fixing seat. Attached Figure Description

[0224] Figure 1 This is a schematic diagram of the structure of an infant carrier according to an embodiment of the present invention, in which the braking mechanism is in a braking state;

[0225] Figure 2 for Figure 1 Enlarged view of point A;

[0226] Figure 3 for Figure 1 A partial exploded view of the infant vehicle shown;

[0227] Figure 4 for Figure 3 Enlarged view of point B;

[0228] Figure 5 for Figure 4 The schematic diagram of the fixing base shown is shown.

[0229] Figure 6 for Figure 4 A schematic diagram of the retractable button shown;

[0230] Figure 7 for Figure 6 the stroller in a further collapsed configuration;

[0231] Figure 8 for Figure 1 the stroller in a further collapsed configuration;

[0232] Figure 9 for Figure 1 the stroller in a further collapsed configuration;

[0233] Figure 10 for Figure 1 the stroller in a further collapsed configuration;

[0234] Figure 11 for Figure 1 the stroller in a further collapsed configuration;

[0235] Figure 12 for Figure 1 the stroller in a further collapsed configuration;

[0236] Figure 13 for Figure 12 the stroller in a further collapsed configuration;

[0237] Figure 14 for Figure 13 the stroller in a further collapsed configuration;

[0238] Figure 15 for Figure 1 the stroller in a further collapsed configuration;

[0239] Figure 16 for Figure 15 the stroller in a further collapsed configuration;

[0240] Figure 17 for Figure 16 the stroller in a further collapsed configuration;

[0241] Figure 18 for Figure 11 the stroller in a further collapsed configuration;

[0242] Figure 19 for Figure 18 the stroller in a further collapsed configuration;

[0243] Figure 20 for Figure 18 Enlarged view of point E;

[0244] Figure 21 for Figure 18 A schematic diagram of the length adjustment mechanism in the middle;

[0245] Figure 22 for Figure 21 Enlarged view at point F;

[0246] Figure 23 for Figure 21 A stereoscopic view of F from another perspective;

[0247] Figure 24 for Figure 21 The cross-sectional view after the first shell is hidden at point F;

[0248] Figure 25 for Figure 21 Another sectional view at point F;

[0249] Figure 26 for Figure 1 The diagram shown is a structural schematic of an infant and toddler vehicle in rocking chair mode.

[0250] Figure 27 for Figure 1 The diagram shown is a structural schematic of an infant carrier in carrier mode.

[0251] Figure 28 for Figure 1 A cross-sectional view of the infant vehicle shown;

[0252] Figure 29 for Figure 28 Enlarged view of point G;

[0253] Figure 30 for Figure 28 Enlarged view of point H;

[0254] Figure 31 for Figure 1 Enlarged view of point I;

[0255] Figure 32 for Figure 1 Another structural diagram of the infant vehicle is shown, in which the braking mechanism is in an unbraked state.

[0256] Figure 33 for Figure 32 Enlarged view of point J;

[0257] Figure 34 for Figure 1 Exploded view of the first connecting assembly and braking mechanism of the infant vehicle shown;

[0258] Figure 35 for Figure 34 The diagram shows the structure of the brake control mechanism in an infant vehicle.

[0259] Figure 36 for Figure 35 The diagram shown is a structural schematic of the brake control component from another perspective.

[0260] Figure 37 for Figure 36 The exploded view of the brake control component is shown below.

[0261] Figure 38 This is a schematic diagram of the brake operating component according to another embodiment of the present invention;

[0262] Figure 39 for Figure 38 A schematic diagram of the brake control component from another perspective;

[0263] Figure 40 for Figure 1 The infant vehicle shown is a cross-sectional view along K1-K1;

[0264] Figure 41 for Figure 32 The infant vehicle shown is a cross-sectional view along K2-K2;

[0265] Figure 42 for Figure 34 A schematic diagram of the structure of the first pedal in the infant carrier shown;

[0266] Figure 43 for Figure 34 The diagram shows the structure of the brake pusher in the infant vehicle:

[0267] Figure 44 This is a schematic diagram of the structure of the infant carrier in rocking chair mode according to an embodiment of the present invention;

[0268] Figure 45 for Figure 44 The diagram shows the structure of the infant carrier in carrier mode.

[0269] Figure 46 for Figure 44 The diagram shown illustrates the structure of an infant vehicle in car safety seat mode.

[0270] Figure 47 for Figure 44 The diagram shown illustrates the structure of the infant carrier in stroller mode.

[0271] Figure 48 for Figure 47Structure diagram of the infant carrier from another perspective in a state between the extended state and the retracted state of the handle;

[0272] Figure 49 In order to Figure 48 Partial perspective view of the handle of the infant carrier in a state between the extended state and the retracted state of the handle and enlarged view of the dashed box portion thereof;

[0273] Figure 50 In order to Figure 45 Structure diagram of the handle of the infant carrier with the handle joints on both sides and the handle rod on one side hidden and enlarged view of the dashed box portion thereof from another perspective;

[0274] Figure 51 In order to Figure 50 Structure diagram of the handle of the infant carrier with the handle joints on both sides and the handle rod on one side hidden after another perspective and enlarged view of the dashed box portion thereof;

[0275] Figure 52 In order to Figure 45 Sectional view of the infant carrier along T1-T1 and enlarged view of the dashed box portion thereof;

[0276] Figure 53 In order to Figure 45 Structure diagram of the handle of the infant carrier and enlarged view of the dashed box portion thereof;

[0277] Figure 54 In order to Figure 53 Sectional view of the handle along T3-T3 and enlarged view of the dashed box portion thereof;

[0278] Figure 55 In order to Figure 45 Structure diagram of the handle of the infant carrier from another perspective;

[0279] Figure 56 In order to Figure 55 Sectional view of the handle along T2-T2 and enlarged view of the dashed box portion thereof;

[0280] Figure 57 In order to Figure 47 Sectional view of the infant carrier along T4-T4 and enlarged view of the dashed box portion thereof;

[0281] Figure 58 In order to Figure 47 Sectional view of the infant carrier along T5-T5 and enlarged view of the dashed box portion thereof;

[0282] Figure 59 In order to Figure 58 Exploded view of the pivot joint, the handle joint and the angle adjustment mechanism of the infant carrier;

[0283] Figure 60 for Figure 58 An exploded view of the pivot joints, handle joints, and angle adjustment mechanism of the infant vehicle shown from another perspective;

[0284] Figure 61 for Figure 47 A cross-sectional view of the handle in the infant vehicle shown, and an enlarged view of the portion within the dashed box.

[0285] Figure 62 for Figure 47 A schematic diagram of the second restraint mechanism, the fixed base, and the pivot button in the infant carrier shown;

[0286] Figure 63 for Figure 62 A schematic diagram of the second restraint mechanism, the fixed seat, and the pivot button in the infant vehicle shown from another perspective;

[0287] Figure 64 This is a structural schematic diagram of an infant carrier according to an embodiment of the present application, wherein the frame is in an unfolded state and the handle assembly is in an extended state;

[0288] Figure 65 for Figure 64 A structural diagram of an infant and toddler vehicle from another perspective;

[0289] Figure 66 for Figure 65 The diagram shows the structure of the infant carrier when the frame is in a semi-folded state.

[0290] Figure 67 for Figure 65 The diagram shows the structure of the infant carrier when the frame is in the folded state.

[0291] Figure 68 for Figure 64 The diagram shows the structure of the infant vehicle from another perspective, where the second seat shell has been removed and the deployment locking mechanism is in a locked state;

[0292] Figure 69 for Figure 68 Enlarged view of point O in the middle;

[0293] Figure 70 for Figure 68 The diagram shown illustrates the structure of the infant carrier when the locking mechanism is in the unlocked state.

[0294] Figure 71 for Figure 70 Enlarged view of point P in the middle;

[0295] Figure 72 for Figure 64 Enlarged view at L in

[0296] Figure 73 For Figure 64 Structure view of the infant carrier in another perspective, wherein the frame is in the unfolded state

[0297] Figure 74 For Figure 64 Structure view of the infant carrier in another perspective, wherein the frame is in the folded state

[0298] Figure 75 Structure view of the base of the infant carrier according to an embodiment of the present application

[0299] Figure 76 For Figure 75 Structure view of the base in another perspective

[0300] Figure 77 For Figure 75 Structure view of the base after removal of the second shell

[0301] Figure 78 For Figure 77 Structure view of the base in another perspective

[0302] Figure 79 For Figure 75 Transversal sectional view of the base in

[0303] Figure 80 For Figure 75 Longitudinal sectional view of the base in, wherein the second operating member is not pressed

[0304] Figure 81 For Figure 75 Longitudinal sectional view of the base in, wherein the second operating member is pressed

[0305] Figure 82 For Figure 64 Partial exploded view of the infant carrier in another perspective

[0306] Figure 83 For Figure 82 Enlarged view at Q in

[0307] Figure 84 For Structure view of the wheel and rear leg in, wherein the brake mechanism is in the locked state

[0308] Figure 85 For Figure 84 Structure view of the wheel and rear leg in, wherein the brake mechanism is in the unlocked state

[0309] Figure 86 Fig. 1 is a perspective view of an infant carrier according to an embodiment of the present application; Figure 64 Fig. 2 is an exploded view of the infant carrier of Fig. 1 in another perspective;

[0310] Figure 87 Fig. 3 is a perspective view of the infant carrier of Fig. 1 in another perspective; Figure 86 Fig. 4 is an enlarged view of R in Fig. 3;

[0311] Figure 88 Fig. 5 is a schematic view of a structure of a pedal of the infant carrier according to an embodiment of the present application;

[0312] Figure 89 Fig. 6 is a schematic view of a handle assembly of the infant carrier according to an embodiment of the present application, wherein the handle is in a shortened state;

[0313] Figure 90 Fig. 7 is an exploded view of the handle assembly in Fig. 6; Figure 89 Fig. 8 is an exploded view of a length adjustment mechanism in Fig. 6;

[0314] Figure 91 Fig. 9 is a schematic view of a structure of the length adjustment mechanism in Fig. 6; Figure 90 Fig. 10 is a sectional view of the handle assembly in Fig. 6;

[0315] Figure 92 Fig. 11 is an enlarged view of S in Fig. 10. Figure 89

[0316] Figure 93 Figure 92

[0317] 100, seat assembly, 110, seat, 112, seat shell, 1121, first seat shell, 1122, second seat shell, 1123, first recess, 1125, second recess, 111, seat body, 113, first accommodating cavity, 114, bearing cavity, 115, headrest, 116, legrest, 117, pivot joint, 1171, second accommodating groove, 11711, first pivot limiting groove, 11712, second pivot limiting groove, 1172, second pivot shaft, 11721, pivot groove, 120, folding limiting part, 121, strip-shaped groove, 130, safety belt positioning device, 131, safety belt clamping groove, 360, ISOFIX connector,

[0318] 100, seat assembly, 110, seat, 112, seat shell, 1121, first seat shell, 1122, second seat shell, 1123, first recess, 1125, second recess, 111, seat body, 113, first accommodating cavity, 114, bearing cavity, 115, headrest, 116, legrest, 117, pivot joint, 1171, second accommodating groove, 11711, first pivot limiting groove, 11712, second pivot limiting groove, 1172, second pivot shaft, 11721, pivot groove, 120, folding limiting part, 121, strip-shaped groove, 130, safety belt positioning device, 131, safety belt clamping groove, 360, ISOFIX connector,

[0319] ​​​200, frame body, 210, rear support, 211, upper rear leg, 211a, first upper rear leg, 211b, second upper rear leg, 212, lower rear leg, 212a, first lower rear leg, 212b, second lower rear leg, 2121, first leg housing, 2122, second leg housing, 2123, third receiving cavity, 2124, guide portion, 2125, second guide hole, 2126a, first movement limiting portion, 2126b, second movement limiting portion, 2127, abutting portion, 213, first connecting rod, 220, front support, 221, upper front leg, 221a, first upper front leg, 221b, second upper front leg, 222, lower front leg, 222a, first lower front leg, 222b, second lower front leg, 2221, first connecting segment, 2222, second connecting segment, 223, second connecting rod; 230, first support frame, 231, first support rod, 232, first connecting assembly, 233, first connecting seat, 240, second support frame, 241, second support rod, 242, second connecting assembly, 2421, connecting rod, 2421a, second slot-shaped hole, 2422, connecting sleeve, 243, second connecting seat,

[0320] 300, base, 310, base body, 311, first housing, 312, second housing, 313, second opening, 314, third recess, 315, third opening, 316, stop hole, 317, second protrusion, 318, fourth receiving cavity, 320, base support, 321, sliding sleeve, 3211, third through hole, 322, first guide hole, 330, brake connecting portion, 331, clamping protrusion, 340, locking piece pivot shaft, 350, sliding rod, 351, adjustment hole, 360, ISOFIX connector, 370, linkage rod,

[0321] 400, wheel assembly, 410, rear wheel assembly, 411, rear wheel, 411a, first rear wheel, 411b second rear wheel, 412, fender, 413, fender connecting piece, 420, front wheel assembly, 421, front wheel;

[0322] 600, switching mechanism, 610, linkage assembly, 611, first linkage rod, 612, second linkage rod, 620, locking assembly, 621, fixing seat, 6211, second receiving cavity, 6212, open slot, 6213, first opening portion, 6214, second opening portion, 622, first locking piece, 6221, locking body, 6222, locking protrusion, 6222a, inclined surface, 6223, elastic arm, 623, folding button, 6231, connecting portion, 6232, operation portion, 6233, connecting slot, 6234, pushing protrusion, 6235, locking recess, 6236, limiting step,

[0323] 900, moving assembly, 910, connecting arm, 911, first hollow cavity, 912, positioning hole, 920, handle body, 921, adjusting part, 923, first perforated hole, 924, third slot, 925, second hollow cavity, 931, handle fixing seat, 932, limiting piece, 940, pivoting seat, 941, disc-shaped part, 942, connecting part, 943, second accommodating cavity, 944, third guide slot, 950, pivoting adjusting assembly, 951, pivoting fixing piece, 952, pivoting operating piece, 9521, pivoting clamping convex, 9522, operating limiting part; 960, length adjusting mechanism, 961, positioning piece, 9611, movable connecting part, 9612, positioning part, 962, pull handle, 963, pull rod, 9631, driving connecting part, 9632, operating connecting part, 9633, connecting rod part, 9634, second driving slot, 9635, second side plate, 9636, second connecting plate, 9637, abutting part, 9641, length adjusting mechanism elastic piece, 9642, third driving pin, 965, guide seat, 9651, third sliding slot, 9653, fourth slot, 9654, fixing hole, 9655, accommodating slot, 9656, third protrusion;966, length adjusting handle, 9661, sliding block, 9661a, second sliding groove, 9661b, second sleeving column, 967, driving block, 9671, mounting groove, 9672, through groove, 9673, first guide groove, 9674, limiting groove, 9675, reset groove, 9676, first sleeving column, 968, positioning block, 9681, positioning end, 9682, first sliding pin, 969, length resetting member, 970, moving rod, 971, first rod part, 972, second rod part, 9721, locking hole, 973, length adjusting mechanism, 9731, fixed plug, 9731a, first through hole, 9731b, second through hole, 9731c, first sliding groove, 9731d, first side face, 9731e, second side face, 9731f, third side face, 9731i, first pushing part, 9732, locking pin, 9732a, driving protruding column, 9733, operation assembly, 9733a, pull rod, 9733b, length adjusting operation member, 9733c, driving plug, 9733d, first shell part, 9733e, second shell part, 9733f, connecting shell part, 9733g, driving inclined groove, 9733h, second pushing part, 9734, first resetting member, 980, moving body, 990, handle rod, 991, first handle, 9911, first gear hole, 992, second handle, 9921, second gear hole, 993, adjusting sliding member, 994, handle joint, 9941, joint body, 9941a, button mounting groove, 9941b, penetrating hole, 9941c, first accommodating groove, 9941d, first pivoting shaft, 9941e, angle limiting groove, 9941f, first angle adjusting groove, 9941g, second angle adjusting groove, 9942, mounting member, 9943, connecting sleeve, 995, fixed seat, 9951, through hole,

[0324] 500, angle adjusting mechanism, 510, moving connecting seat, 511, first locking part, 512, first matching groove, 520, seat connecting seat, 521, second locking part, 522, second matching groove, 530, third locking part, 540, angle adjusting operation member, 550, second resetting member, 560, pivoting button, 561, button body, 562, button protrusion, 5621, limiting hook part, 570, angle locking member, 571, pivoting hole, 572, first angle adjusting convex, 573, angle limiting convex, 574, second angle adjusting convex, 580, angle resetting member,

[0325] 400, wheel assembly, 430, wheel mounting frame, 431, communicating hole, 440, wheel body, 441, first brake hole,

[0326] 700, adjusting device, 710, second stop, 720, third operating piece, 721, first driving groove, 722, operating hook portion, 724, accommodating groove, 725, first protrusion, 730, fixing seat, 731, third guide groove, 740, adjusting device elastic piece, 750, first driving pin,

[0327] 800, brake mechanism, 810, predetermined wheel, 811, wheel hub, 812, protruding column, 813, second brake hole, 820, locking pin, 821, second connecting end, 822, locking end, 823, protruding portion, 830, pedal piece, 831, foot pedal portion, 832, lug portion, 833a, first clamping concave, 833b, second clamping concave, 834, traction connecting portion, 835, elastic sheet, 836, anti-skid pattern, 840, third driving piece, 841, driving surface, 842, first side plate, 843, first connecting plate, 851, first brake mechanism elastic piece, 852, second driving pin, 853, second brake mechanism elastic piece; 860, brake lever, 861, first strip-shaped hole, 870, brake operating piece, 871, first pedal, 8711, fixing hole, 8712, sleeving portion, 8712a, mounting cavity, 8712b, pushing rib, 8712c, display window, 8713, treading portion, 872, second pedal, 8721, elastic finger, 880, brake pushing piece, 881, matching end, 882, brake slot, 883, positioning slot, 884, first mark, 885, second mark, 890, third reset piece,

[0328] A10, fastener, A20, first pin piece, A30, second pin piece, B10, first pivot shaft, B20, second pivot shaft, P1, first pivot point, P2, second pivot point, P3, third pivot point, P4, fourth pivot point, P5, fifth pivot point, P6, sixth pivot point, P7, seventh pivot point, P8, eighth pivot point, P9, ninth pivot point,

[0329] C00, first limiting mechanism, C10, second locking piece, C11, locking end, C12, abutting end, C121, stroke slot, C20, first driving piece, C21, limitation release portion, C30, first elastic piece, C40, limiting pin,

[0330] D00, second limiting mechanism, D10, second driving piece, D11, first connecting end, D111, buckle hole, D12, sleeving protrusion, D20, third locking piece, D21, clamping end, D211, clamping hook, D22, stop end, D30, fourth reset piece,

[0331] 101, first accommodating cavity,

[0332] M, third position, N, fourth position,

[0333] 5A. Unlocking mechanism; 5A1. Second sliding pin; 5A2. First stop; 5A21. Hook of first stop; 5A22. First wedge surface; 5A3. First connecting member; 5A4. Elastic member of unlocking mechanism; 5B. Unlocking release mechanism; 5B1. First operating member; 5B11. First operating part; 6A. Closing locking mechanism; 6A1. Fixed rod; 6A2. Locking member; 6A2a. Fourth locking member; 6A2b. Fifth locking member; 6A21. Second connecting member; 6A22. Locking member connecting part; 6A23. Locking member hook; 6A24. Second wedge surface; 6A3. Elastic member of closing locking mechanism; 6A31. Spring part; 6A32. U-shaped connecting part; 6A4. Fixed member; 6A41. Spring mounting part; 6B. Closing locking release mechanism; 6B1. Second operating member; 10. Horizontal reference surface; 20. Vertical reference surface. Detailed Implementation

[0334] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of protection of this utility model.

[0335] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0336] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0337] One embodiment of this utility model proposes an infant carrier that can switch between multiple usage modes such as an infant stroller, car safety seat, infant carrier, or rocking chair, and has a simple structure and is easy to use.

[0338] Specifically, such as Figure 1 As shown, the infant vehicle includes a seat assembly 100, a frame 200, a switching mechanism 600, a moving assembly 900, an angle adjustment mechanism 500, a wheel assembly 400, and a braking mechanism 800.

[0339] Specifically, as shown in Figure 1 , the seat assembly 100 comprises a seat 110 for a baby to sit or lie on and a folding limiting part 120 arranged on the seat 110 (see Figure 16 and Figure 17 ). In the embodiment, the folding limiting part 120 is a folding limiting protrusion arranged on the bottom of the seat 110. Of course, in other embodiments, the folding limiting part 120 can also be arranged on the front side, rear side or other positions of the seat 110. The folding limiting part 120 can also be a limiting slot or a limiting hook, etc.

[0340] Specifically, the seat 110 comprises a seat shell 112 made of hard plastic material and a seat body 111 made of foamed material (such as EPP, EPS, EPO, EPE, etc.). The seat 110 formed by splicing the seat shell 112 and the seat body 111 together is not only light in weight, but also has high support strength. The folding limiting part 120 is used to lock the frame 200 in the folded state (see later).

[0341] Further, the frame 200 has an unfolded state and a folded state, and the frame 200 is attached to the seat assembly 100, i.e. the frame 200 can support the seat assembly 100. When the frame 200 is in the unfolded state, the baby carrier is suitable for use as a baby stroller, and when the frame 200 is in the folded state, the baby carrier is suitable for use as a car safety seat, a basket or a rocking chair, etc. Specifically, as shown in Figure 1 , the frame 200 comprises a first support frame 230 and a second support frame 220 which are pivotally connected to each other. The first support frame 230 and the second support frame 220 are both made of aluminum pipes, so that the frame 200 is light in weight and easy to carry.

[0342] Specifically, as shown in Figure 1As shown, the first support frame 230 and the second support frame 220 are both substantially U-shaped structures. The first support frame 230 comprises two first support rods 231 and a first connecting assembly 232 connected between the two first support rods 231. The second support frame 220 comprises two second support rods 221 and a second connecting assembly 222 connected between the two second support rods 221. The two first support rods 231 and the two second support rods 221 are pivotally connected to the left and right sides of the seat assembly 100 respectively. Each first support rod 231 and each second support rod 221 are pivotally connected at a first pivot point P1. The first pivot point P1 is slidingly connected to the seat assembly 100. In the present embodiment, when the frame body 200 is in the unfolded state, the first pivot point is located at a first position of the seat assembly 100. When the frame body 200 is in the folded state, the first pivot point is located at a second position of the seat assembly 100. Taking a fictitious horizontal cross-section of the bottommost part of the seat assembly 100 as a horizontal reference surface 10, the first position is closer to the horizontal reference surface 10 than the second position. Taking a fictitious vertical reference surface of the frontmost end of the seat assembly 100 as a vertical reference surface 20, the first position is closer to the vertical reference surface 20 than the second position. That is, the sliding path of the first pivot point is inclined upward along the front-to-back direction.

[0343] Specifically, as shown, Figure 1 the first connecting assembly 232 is in the shape of a straight rod. The second connecting assembly 222 comprises a connecting rod 2421 and two connecting sleeves 2422. The connecting rod 2421 is a hollow rod structure, and the two ends of the connecting rod 2421 are at least partially inserted into the two connecting sleeves 2422 respectively. Taking one side of the seat assembly 100 as an example, one end of the first support rod 231 is provided with a first connecting seat 213, and one end of the second support rod 221 is provided with a second connecting seat 243. The first connecting seat 213 and the second connecting seat 243 are pivotally connected by a first pivot shaft B10 (see Figure 8 ). The first support frame 230 and the second support frame 220 are attached to the seat assembly 100 by the first connecting seat 213 and the second connecting seat 243 respectively. In the present embodiment, the first support frame 230 and the second support frame 220 are attached to the seat body 111 of the seat 110 by the first connecting seat 213 and the second connecting seat 243 respectively. The first support frame 230 and the second support frame 220 are pivotally connected to each other by the first connecting seat 213 and the second connecting seat 243, and can rotate relative to the seat assembly 100. The first connecting seat 213 can support the seat assembly 100, and the second connecting seat 243 can directly or indirectly support the seat assembly 100. In the present embodiment, when the frame body 200 is in the unfolded state, the first support frame 230 and the second support frame 220 are pivotally connected to each other by the first connecting seat 213 and the second connecting seat 243 to form a triangular support structure, thereby providing stable support for the seat assembly 100.

[0344] Further, as shown in Figure 1 and Figure 2 The switching mechanism 600 is arranged between the seat assembly 100 and the frame 200, and can switch the frame 200 between the unfolded state and the folded state. Specifically, the switching mechanism 600 includes a linkage assembly 610 and a locking assembly 620. The linkage assembly 610 is connected between the frame 200 and the seat assembly 100. The locking assembly 620 can be operated to switch between a locked state and an unlocked state. When the locking assembly 620 is in the locked state, the frame 200 can be locked in the unfolded state. When the locking assembly 620 is in the unlocked state, the frame 200 can be switched by the linkage assembly 610 from the unfolded state to the folded state or from the folded state to the unfolded state. In this embodiment, there are two switching mechanisms 600, which are arranged between the left and right sides of the seat assembly 100 and the left and right sides of the frame 200, respectively. Of course, in other embodiments, the number of switching mechanisms 600 can be more than two or less than two.

[0345] The structure and connection relationship of one of the switching mechanisms 600 will be described in detail below:

[0346] As shown in Figure 1 The linkage assembly 610 includes a first linkage rod 611 and a second linkage rod 612. The two ends of the first linkage rod 611 are respectively pivoted to the first support frame 230 and the seat assembly 100, and the two ends of the second linkage rod 612 are respectively pivoted to the second support frame 220 and the seat assembly 100.

[0347] Specifically, as shown in Figures 2 to 4 The locking assembly 620 includes a fixed seat 621, a first locking member 622, and a folding button 623.

[0348] As shown in Figure 4 and Figure 5 The fixed seat 621 is fixed to one side of the seat 110. The fixed seat 621 is used to provide a sliding track for the pivoting points of the first support rod 231, the second support rod 221, and the seat assembly 100 during the switching of the frame 200 from the unfolded state to the folded state or from the folded state to the unfolded state. In this embodiment, the sliding track and the fixed seat 621 are both in a long strip structure. In other embodiments, the fixed seat 621 can also be in other structures other than the long strip structure, as long as the sliding track is in a long strip structure. Of course, in other embodiments, the sliding track does not necessarily have to be a strict straight line structure. For example, the sliding track can also be an arc-shaped structure with a certain curvature.

[0349] Specifically, as shown in Figure 4 and Figure 5As shown, a first receiving cavity 113 is provided on one side of the seat 110, and the fixing seat 621 is installed and fixed in the first receiving cavity 113 by fastener A10. The fixing seat 621 has a second receiving cavity 6211 (see...). Figure 8 The second receiving cavity 6211 has an opening 6212 that communicates with it. The opening 6212 has a first opening 6213 with a relatively large diameter and a second opening 6214 with a relatively small diameter.

[0350] like Figure 4 and Figure 8 As shown, the first locking member 622 is rotatably disposed in the second receiving cavity 6211, and at least a portion of the first locking member 622 can extend out of the second receiving cavity 6211 through the opening slot 6212. Specifically, the first locking member 622 is pivotally connected to the fixing base 621 at the second pivot point P2, and the second pivot point P2 is located within the second receiving cavity 6211. The first locking member 622 specifically includes a locking body 6221 and locking protrusions 6222 and elastic arms 6223 respectively connected to both ends of the first locking member 622 body. In this embodiment, the first locking member 622 is an integrally formed structure. Of course, in other embodiments, the first locking member 622 can also be formed by connecting the independent locking body 6221, locking protrusions 6222 and elastic arms 6223 by means of welding or other methods. The locking protrusion 6222 can extend out of the second receiving cavity 6211 through the first opening 6213. At least a portion of the locking body 6221 is opposite to or can extend out of the second receiving cavity 6211 through the second opening 6214. The locking body 6221 and the locking protrusion 6222 are located on one side of the second pivot point P2, and the elastic arm 6223 is located on the other side of the second pivot point P2. The free end of the elastic arm 6223 abuts against the cavity wall of the second receiving cavity 6211, and the elastic arm 6223 constantly causes the locking protrusion 6222 to pivot in the direction of extending out of the opening slot 6212.

[0351] Furthermore, such as Figures 6 to 8 As shown, the retraction button 623 is connected to the frame 200. Specifically, as... Figure 11As shown, the retractable button 623 is attached to the first pivot point P1. Therefore, the sliding path of the retractable button 623 is the same as the sliding path of the first pivot point P1. In this embodiment, the sliding path is inclined upwards in a front-to-back direction. The retractable button 623 can be operated to drive the first locking member 622 to release the lock on the frame 200. Specifically, the retractable button 623 includes a connecting part 6231 and an operating part 6232 that are connected to each other. In this embodiment, the retractable button 623 is a one-piece molded structure. In other embodiments, the retractable button 623 may also be formed by connecting the independent connecting part 6231 and the operating part 6232 by means of welding or other methods. The retractable button 623 is slidably connected to the seat assembly 100. Specifically, the connecting part 6231 is attached to the first connecting seat 233 or the second connecting seat 243 through the first pivot shaft B10. The connecting part 6231 has a connecting groove 6233 on the side facing away from the frame 200. The fixing seat 621 is at least partially engaged in the connecting groove 6233 so that the closing button 623 can slide relative to the fixing seat 621. That is, in this embodiment, the fixing seat 621 itself is equivalent to a sliding track. The connecting groove 6233 forms a limiting step 6236 protruding towards the fixing seat 621. The operating part 6232 has a pushing protrusion 6234 on the side facing the fixing seat 621. The operating part 6232 can be pressed so that the pushing protrusion 6234 pushes the locking body 6221 through the second opening 6214. In other embodiments, if at least part of the locking body 6221 extends out of the second receiving cavity 6211 through the second opening 6214, then the pushing protrusion 6234 does not need to extend into the second receiving cavity 6211 through the second opening 6214. That is, the pushing protrusion 6234 can directly push the locking body 6221. In this embodiment, if Figure 11 As shown, the first linkage 611 is inclined downward along the F7 direction (i.e., from front to back), the second linkage 612 is inclined upward along the F7 direction, and the sliding track is inclined upward along the F7 direction.

[0352] Furthermore, the retraction button 623 is provided with a locking recess 6235, which is located between the connecting part 6231 and the operating part 6232. When the locking assembly 620 is in the locked state, the locking protrusion 6222 engages with the locking recess 6235 to lock, thereby preventing the frame 200 and the linkage assembly 610 from sliding relative to the seat assembly 100. Thus, when the frame 200 is in such a state... Figure 11In the unfolded state, the first support frame 230 and the second support frame 240 of the frame 200 are pivotally connected to each other in a triangular support structure. The triangular support structure formed between the first linkage rod 611 and the first support frame 230, and the triangular support structure formed between the second linkage rod 612 and the second support frame 240, prevent the linkage component 610 from driving the frame 200 to fold, thus keeping the frame 200 in the unfolded state. When the operating part 6232 of the retraction button 623 is pressed, the push protrusion 6234 pushes the locking body 6221 through the second opening 6214, causing the first locking member 622 to rotate around the second pivot point P2. This releases the locking protrusion 6222 from the locking recess 6235, and the locking component 620 is in an unlocked state. The retraction button 623 and the fixing seat 621 can slide relative to each other, allowing the frame 200 to be retracted. During the sliding process of the retractable button 623 relative to the fixed base 621, the locking recess 6235 first moves until it is no longer opposite the locking protrusion 6222. At this time, the limiting step 6236 abuts against the locking protrusion 6222, and the locking protrusion 6222 is pushed into the second receiving cavity 6211. At this time, the elastic arm 6223 undergoes elastic deformation. When the limiting step 6236 moves past the locking protrusion 6222, the locking protrusion 6222 is reset under the elastic restoring force of the elastic arm 6223 and extends out of the second receiving cavity 6211. At this time, the retractable button 623 moves to a position away from the locking protrusion 6222, so that the locking protrusion 6222 and the locking recess 6235 are no longer engaged.

[0353] Of course, in other embodiments, the reverse can also be used, where the fixing base 621 and the first locking member 622 are fixed to the frame 200, and the retraction button 623 is fixed to the seat assembly 100. Alternatively, other forms of locking components 620 can be used.

[0354] The following uses the structure of one side of the seat assembly 100 as an example to illustrate the specific process of switching between the unfolded and folded states of the infant carrier:

[0355] When it is necessary to switch the frame 200 from the unfolded state to the folded state, so that the infant vehicle can be switched from the use mode of an infant stroller to the use mode of a car seat, infant carrier, or rocker, such as... Figure 8 As shown, the operating part 6232 of the retraction button 623 can be pressed first along the F1 direction, causing the push protrusion 6234 to push the locking body 6221 through the second opening 6214, causing the first locking member 622 to rotate around the second pivot point P2 along the F2 direction, causing the locking protrusion 6222 and the locking recess 6235 to disengage, and the locking assembly 620 to be in the unlocked state. Figure 9 and Figure 10As shown, at this time, since the locking protrusion 6222 exits the sliding path, the folding button 623 is slidable relative to the fixed seat 621, and thus the first connecting seat 233 and the seat assembly 100 are also slidable relative to the fixed seat 621. At this time, the elastic arm 6223 is elastically deformed. Figures 11 to 14 As shown, at this time, the folding button 623 can be caused to slide in the F3 direction relative to the fixed seat 621, and since the first connecting seat 233 or the second connecting seat 243 is attached to the folding button 623, the first support rod 231 and the second support rod 241 (i.e., the first support frame 230 and the second support frame 240) can be simultaneously caused to rotate in the F4 direction through the linkage action of the first linkage rod 611 and the second linkage rod 612. At the same time, the first support rod 231 and the second support rod 241 also slide in the F3 direction relative to the fixed seat 621. As shown in FIG. 6C, Figure 15As shown, when the first support rods 231 and the second support rods 241 are rotated to the folded position, the first support rods 231 and the second support rods 241 are in parallel and substantially coincident, and the wheel assemblies 400 connected with the first support frames 230 (denoted as front wheel assemblies 400) and the wheel assemblies 400 connected with the second support frames 240 (denoted as rear wheel assemblies 400) are also in parallel and substantially coincident. Each wheel assembly 400 includes a wheel mounting frame 430 and a wheel body 440. It should be noted that the coincidence referred to herein can include the case where the centers of the front wheel body 430 and the rear wheel body 430 are coincident, the case where the axial projection of the front wheel body 430 is within the axial projection range of the rear wheel body 430, or the case where the axial projection of the rear wheel body 430 is within the axial projection range of the front wheel body 430, and the case where the center of the front wheel body 430 is within the axial projection of the rear wheel body 430, or the case where the center of the rear wheel body 430 is within the axial projection of the front wheel body 430. Specifically, the length of the second connecting assembly 242 is greater than the length of the first connecting assembly 232, so that the distance between the two second support rods 241 is greater than the distance between the two first support rods 231, and thus the first support rods 231 and the second support rods 241, the front wheel assemblies 400 and the rear wheel assemblies 400 can be in a substantially coincident state in the folded state of the frame 200. Moreover, during folding, the frame 200 also moves rearward relative to the seat assembly 100 as a whole, and the pivot point of the frame 200 and the seat assembly 100, i.e. the first pivot point P1, moves upward. The center of the front wheel body 430 (or the center of the rear wheel body 430) and the pivot point of the frame 200 and the seat assembly 100 are substantially on the same horizontal plane, and the line connecting the center of the front wheel body 430 (or the center of the rear wheel body 430) and the pivot point of the frame 200 and the seat assembly 100 is parallel to the horizontal reference plane 10. In this way, the first support frame 230 and the second support frame 240 have a smaller range of rotation during unfolding and folding, and the overall volume of the folded infant carrier is smaller, thereby reducing transportation costs and facilitating carrying in the basket mode, and also facilitating use in the rocking chair or car safety seat mode. At the same time, as shown, Figure 16 The second connecting assembly 242 of the second support frame 240 is engaged with the folding limiting portion 120 at the bottom of the seat 110, thereby locking the frame 200 in the folded state to prevent the frame 200 from automatically unfolding under accidental circumstances.

[0356] As Figure 15As shown, since the folded frame 200 is located at a relatively lower position on the outer side of the seat assembly 100, and the ISOFIX connector 360 rotatably arranged on the outer side of the seat assembly 100 is located at a relatively higher position, the folded frame 200 will not interfere with the unfolding and folding of the ISOFIX connector 360 and the engagement with the car seat.

[0357] When it is needed to switch the frame 200 from the folded state to the unfolded state, so as to switch the infant carrier from the use mode of the car safety seat, the basket or the rocking chair to the use mode of the stroller, as shown, Figure 16 the second connecting assembly 242 can be manually pulled to deform the second connecting assembly 242 to be released from the limiting and fixing of the folding limiting part 120. As shown, Figure 15 and Figure 14 the first support frame 230 and the second support frame 240 are rotated in the opposite direction of F4. As shown, Figure 13 and Figure 12 the first support frame 230 and the second support frame 240 also drive the folding button 623 to move relative to the fixed seat 621 in the opposite direction of F3 during the unfolding process. As shown, Figure 10 , Figure 9 and Figure 8 during the sliding process of the folding button 623, the connecting part 6231 will move to the left side of the locking protrusion 6222 by passing the locking protrusion 6222, and the locking protrusion 6222 of the third locking part 622 will be re-engaged with the locking recess 6235 of the folding button 623, so as to lock the frame 200 in the unfolded state, so as to ensure that the frame 200 will not be released under unexpected circumstances after being unfolded. Specifically, before folding, the locking protrusion 6222 is located on the sliding path of the folding button 623, and during the folding process, the limiting step 6236 of the folding button 623 (through the inclined surface 6222a on the locking protrusion 6222) pushes the locking protrusion 6222, so that the third locking part 622 can be pivoted and the locking protrusion 6222 can pass the limiting step 6236.

[0358] Further, as shown, Figure 18 the moving assembly 900 is installed on the seat assembly 100 to facilitate the user to move the infant carrier. When the frame is in the unfolded state and the infant carrier is in the use mode of the stroller, the moving assembly 900 can be used as the handle of the stroller. When the frame is in the folded state, as shown, Figure 15 , Figure 26 and Figure 27 the infant carrier is in the use mode of the car safety seat, the basket or the rocking chair, the moving assembly 900 is used as the top rod of the car safety seat, the handle of the basket or is folded at the back of the rocking chair.

[0359] As shown, Figure 1As shown, the moving assembly 900 is roughly in a U-shaped rod structure, including a moving body 980 and two moving rods 970 connected to two ends of the moving body 980. In order to adapt to different usage habits, the length of each moving rod 970 can be adjusted. Hereinafter, one of the moving rods 970 will be taken as an example to illustrate its specific structure:

[0360] As shown in Figure 18 , the moving rod 970 includes a first rod part 971, a second rod part 972 and a length adjustment mechanism 973. The first rod part 971 is partially inserted into the second rod part 972, and the length adjustment mechanism 973 is arranged between the first rod part 971 and the second rod part 972. The length of the first rod part 971 inserted into the second rod part 972 can be adjusted through the length adjustment mechanism 973. In the embodiment, the first rod part 971 and the second rod part 972 are both hollow rod structures. Of course, in other embodiments, the first rod part 971 and the second rod part 972 can also be partially hollow rod structures. In the embodiment, the first rod part 971 is connected to the moving body 980, and the second rod part 972 is pivotally connected to the seat body 111 of the seat 110 at a third pivot point P3 away from the first rod part 971. In other embodiments, the positions of the first rod part 971 and the second rod part 972 can also be interchanged. The third pivot point P3 and the first pivot point P1 are not at the same position, i.e. the third pivot point P3 and the first pivot point P1 are arranged at intervals.

[0361] Specifically, as shown in Figure 19 and Figure 20 , the length adjustment mechanism 973 includes a fixed plug 9731, a locking pin 9732, an operating assembly 9733 and a first reset member 9734. The fixed plug 9731, at least part of the locking pin 9732, the operating assembly 9733 and the first reset member 9734 are all arranged in the first rod part 971, and the second rod part 972 is sequentially provided with a plurality of locking holes 4241 along its length direction. The locking pin 9732 has a first locking position and a first release position. When the locking pin 9732 is located at the first locking position, it can be inserted into cooperation with one of the plurality of locking holes 4241. When the locking pin 9732 is located at the first release position, it can be disengaged from cooperation with one of the plurality of locking holes 4241, thereby realizing the relative fixation or relative sliding between the first rod part 971 and the second rod part 972.

[0362] Specifically, as shown in Figures 21 to 24 , the fixed plug 9731 is fixedly arranged in the first rod part 971 and close to the lower end of the first rod part 971. The fixed plug 9731 is roughly in a cuboid structure. For the convenience of description, the structure of the fixed plug 9731 will be described in a Cartesian coordinate system. The fixed plug 9731 is provided with a first through hole 9731a, a second through hole 9731b and a third sliding groove 9731c. Figure 23As shown, the first through-hole 9731a extends through the first side 9731d and the second side 9731e of the fixing plug 9731 along the direction of the x-axis, and the locking pin 9732 is movably arranged in the first through-hole 9731a. At least a portion of the locking pin 9732 can extend out of the first through-hole 9731a to engage with one of the plurality of locking holes 4241. Of course, in other embodiments, the first through-hole 9731a can also extend through only the first side 9731d or the second side 9731e of the fixing plug 9731. As shown, Figure 24 As shown, the second through-hole 9731b extends through the third side 9731f and the fourth side of the fixing plug 9731 along the direction of the y-axis, and the second through-hole 9731b is in communication with the first through-hole 9731a. The cross-sectional shape of the second through-hole 9731b on the third side 9731f and the fourth side is along the direction of the x-axis. The locking pin 9732 is provided with a driving protrusion 9732a, which is inserted into the second through-hole 9731b, and at least a portion of the driving protrusion 9732a can extend out of the second through-hole 9731b. The opposite third side 9731f and the fourth side (not shown in the figure) of the fixing plug 9731 are each provided with a third sliding groove 9731c extending along the direction of the z-axis, and the two ends of the second through-hole 9731b respectively extend through the groove walls of the two third sliding grooves 9731c, i.e., the third sliding grooves 9731c are in communication with the first through-hole 9731a and the second through-hole 9731b, respectively. In summary, the third sliding groove 9731c, the first through-hole 9731a, and the second through-hole 9731b are all in communication and their extension directions are staggered.

[0363] Further, as shown, Figure 18 and Figure 21 The operation assembly 9733 can be operated to drive the locking pin 9732 to move in a direction away from one of the plurality of locking holes 4241. The operation assembly 9733 includes a pull rod 9733a and length adjustment operation members 9733b and driving plugs 9733c respectively arranged at both ends of the pull rod 9733a. In this embodiment, the length adjustment operation members 9733b are adjustment sliders that can slide along the first rod portion 971, and the length adjustment operation members 9733b are at least partially located outside the first rod portion 971 for operation.

[0364] As shown, Figure 23As shown, the drive plug 9733c has a generally rectangular shell-like structure, including a first shell portion 9733d and a second shell portion 9733e disposed opposite to each other, and a connecting shell portion 9733f connecting the first shell portion 9733d and the second shell portion 9733e. Both the first shell portion 9733d and the second shell portion 9733e are provided with opposing and overlapping drive grooves 9733g. The first shell portion 9733d and the second shell portion 9733e can be inserted into the third sliding groove 9731c on the third side surface 9731f and the fourth side surface, respectively, and reciprocate along the z-axis. At least a portion of the drive protrusion 9732a can extend out of the second through hole 9731b and be inserted into the drive groove 9733g, and the drive protrusion 9732a can move along the drive groove 9733g.

[0365] like Figure 23 As shown, when the driving protrusion 9732a moves to position P along the driving groove 9733g, the locking pin 9732 moves to the first locking position. The locking pin 9732 can be inserted into one of the multiple locking holes 4241, and the first rod portion 971 and the second rod portion 972 are relatively fixed. When the length adjustment operating member 9733b moves parallel to the z-axis along the F5 direction, the length adjustment operating member 9733b drives the driving plug 9733c to move together along the F5 direction through the pull rod 9733a. At this time, the driving protrusion 9732a moves to position Q along the driving groove 9733g. At this time, the locking pin 9732 moves to the first unlocking position, and the locking pin 9732 disengages from the corresponding locking hole 4241. The first rod portion 971 and the second rod portion 972 can move relative to each other.

[0366] Furthermore, such as Figure 23 and Figure 25 As shown, the two ends of the first reset member 9734 abut against the fixed plug 9731 and the driving plug 9733c, respectively. The first reset member 9734 constantly causes the driving plug 9733c to move in the opposite direction of F5, that is, the first reset member 9734 constantly causes the driving plug 9733c to move in the direction that drives the locking pin 9732 to the first locking position. Specifically, a first pushing part 9731i can be provided on the fixed plug 9731, and a second pushing part 9733h can be provided on the connecting shell part 9733f of the driving plug 9733c. The first pushing part 9731i is closer to the length adjustment operating member 9733b than the second pushing part 9733h. The two ends of the first reset member 9734 abut against the first pushing part 9731i and the second pushing part 9733h, respectively. In this embodiment, the first reset member 9734 is a spring.

[0367] The length adjustment process of the moving rod 970 is described in detail below:

[0368] First, such as Figures 18 to 21As shown, the length adjustment handle 9733b is moved in the direction F5, which drives the driving plug 9733c to move in the direction F5 through the pull rod 9733a, and the driving protrusion 9732a moves from position P to position Q under the action of the driving chute 9733g, and the locking pin 9732 moves from the first locking position to the first unlocking position, and the locking pin 9732 originally inserted into a certain locking hole 4241 is withdrawn from the locking hole 4241. The first rod part 971 and the second rod part 972 can be relatively moved. At this time, the first return member 9734 is compressed. Then the first rod part 971 can be moved relative to the second rod part 972 to adjust the moving rod 970 to the appropriate length. At this time, the external force applied to the length adjustment handle 9733b can be removed, and the driving plug 9733c is reset in the opposite direction of F5 under the elastic force of the first return member 9734. Thus, the driving protrusion 9732a moves from position Q to position P under the action of the driving chute 9733g, and the locking pin 9732 moves from the first unlocking position to the first locking position, and the locking pin 9732 is re-inserted into another locking hole 4241, and the first rod part 971 and the second rod part 972 are relatively fixed. Thus, the length adjustment process of the moving rod 970 is completed. The length adjustment process of the other moving rod 970 is the same, and the length adjustment handles 9733b on the two moving rods 970 can be operated simultaneously to adjust the overall length of the moving assembly 900.

[0369] Of course, in other embodiments, the fixed plug 9731, at least part of the locking pin 9732, the operation assembly 9733 and the first return member 9734 can be arranged on the second rod part 972, and the first rod part 971 is sequentially provided with a plurality of locking holes 4241 along the length direction. In short, as long as the relative movement and relative fixation of the first rod part 971 and the second rod part 972 can be achieved.

[0370] Further, the angle adjustment mechanism 500 is arranged between the seat assembly 100 and the moving assembly 900, and is used to adjust the inclination angle of the moving assembly 900 relative to the seat assembly 100. As shown, Figure 15 As shown, when the infant carrier is used as a car safety seat, the moving assembly 900 can be rotated to the opposite front side of the seat 110 to serve as the top rod of the car safety seat; as shown, Figure 26 As shown, when the infant carrier is used as a rocking chair, the moving assembly 900 can be rotated to the opposite rear side of the seat 110; as shown, Figure 27 As shown, when the infant carrier is used as a basket, the moving assembly 900 can be rotated to the opposite middle part of the seat 110 to serve as the handle of the basket.

[0371] Specifically, as shown, Figures 28 to 30As shown, the angle adjustment mechanism 500 comprises a moving connecting seat 510, a seat connecting seat 520, a third locking part 530, an angle adjustment operating part 540 and a second reset part 550. The moving connecting seat 510 is fixedly connected with the moving assembly 900, and has a first locking part 511. Specifically, the moving connecting seat 510 is substantially disc-shaped, and a first matching groove 512 is formed through a substantially middle portion of the moving connecting seat 510. At least a portion of the first matching groove 512 is a gear groove, which is the first locking part 511. The seat connecting seat 520 is fixedly connected with the seat assembly 100, and has a second locking part 521. Specifically, the seat connecting seat 520 is substantially disc-shaped and has a size substantially same as that of the moving connecting seat 510. A second matching groove 522 is formed through a substantially middle portion of the seat connecting seat 520. The second matching groove 522 is a non-through groove and is in communication with the first matching groove 512. In this embodiment, at least a portion of the second matching groove 522 is a gear groove, which is the second locking part 521. The moving connecting seat 510 and the seat connecting seat 520 are pivotally connected with each other through a second pivot shaft B20.

[0372] Further, the third locking part 530 is movably arranged between the moving connecting seat 510 and the seat connecting seat 520, and has a second locking position and a second release position. When the third locking part 530 is in the second locking position, the third locking part 530 is locked and matched with the first locking part 511 and the second locking part 521 at the same time, so as to relatively fix the moving connecting seat 510 and the seat connecting seat 520. When the third locking part 530 is in the second release position, the third locking part 530 can be disengaged from one of the first locking part 511 and the second locking part 521, so as to enable the moving connecting seat 510 to rotate relative to the seat connecting seat 520. In this embodiment, the third locking part 530 is a locking gear, which is movable between the first matching groove 512 and the second matching groove 522. The locking gear can be matched with the gear groove of the first matching groove 512, the gear groove of the second matching groove 522 or both at the same time.

[0373] Further, the angle adjustment operating part 540 is drivingly connected with the third locking part 530, and can be operated to drive the third locking part 530 to move to the second release position. Specifically, the angle adjustment operating part 540 is an adjusting button, which is movably arranged in the first matching groove 512 and abuts against the third locking part 530. In this way, when a user stretches his hand into the first matching groove 512 to press one end of the angle adjustment operating part 540 away from the third locking part 530, the third locking part 530 can be driven to move to the second release position.

[0374] Furthermore, the two ends of the second reset member 550 abut against the third locking part 530 and the seat connecting seat 520 respectively, and the second reset member 550 constantly moves the third locking part 530 in the direction of moving towards the second locked position. Specifically, the second reset member 550 is a spring and is sleeved on the outside of the second pivot shaft B20. At least a portion of the second reset member 550 is located in the first mating groove 512. One end of the second reset member 550 abuts against the bottom of the second mating groove 522, and the other end abuts against the third locking part 530.

[0375] The following describes the angle adjustment process of the moving component 900:

[0376] First, such as Figure 29 As shown, pressing the angle adjustment operating member 540 along the F6 direction causes the angle adjustment operating member 540 to push the third locking part 530 from the second locking position to the second unlocking position, causing the second reset member 550 to deform, as shown. Figure 30 As shown, the third locking part 530 engages only with the second locking part 521, allowing the movable connecting seat 510 to rotate relative to the seat connecting seat 520. At this time, the movable connecting seat 510 can be rotated to adjust the movable assembly 900 to a suitable tilt angle. After adjustment, the external force applied to the angle adjustment operating member 540 can be removed, and the third locking part 530 will reset from the second unlocking position to the second locking position in the opposite direction of F6 under the elastic force of the second reset member 550. Figure 29 As shown, the third locking part 530 re-engages with both the first locking part 511 and the second locking part 521, the movable connecting seat 510 and the seat connecting seat 520 are fixed relative to each other, and the movable component 900 is fixed at the new tilt angle. Simultaneously, the third locking part 530 pushes the angle adjustment operating member 540 back to its original position. Thus, the angle adjustment of the movable component 900 can be achieved with a simple structure, and the operation is simple.

[0377] Furthermore, such as Figure 1 As shown, wheel assemblies 400 are provided at the ends of the first support frame 230 and the second support frame 240 away from the seat assembly 100. In this embodiment, there are four wheel assemblies 400, two of which are connected to the bottom ends of the two first support rods 231 respectively, and are both front wheel assemblies 400; the other two wheel assemblies 400 are connected to the bottom ends of the two second support rods 241 respectively, and are both rear wheel assemblies 400. Each wheel assembly 400 includes a wheel mounting frame 430 and a wheel body 440. The wheel mounting frame 430 is connected to the frame 200. Specifically, the wheel mounting frames 430 of the two front wheel assemblies 400 are connected by a first connecting component 232. The wheel mounting frames 430 of the two rear wheel assemblies 400 are connected by a second connecting component 242. The wheel body 440 is rotatably mounted on the wheel mounting frame 430.

[0378] Further, the brake mechanism 800 is arranged between the frame 200 and the wheel assembly 400, and has a braking state (as shown in Figure 1 and Figure 31 ) for preventing the wheel assembly 400 from rotating, and a non-braking state (as shown in Figure 32 and Figure 33 ) for allowing the wheel assembly 400 to rotate. In the embodiment, the brake mechanism 800 is arranged between the second connecting assembly 242 and the two rear wheel assemblies 400. Of course, in other embodiments, the brake mechanism 800 can also be arranged between the first connecting assembly 232 and the two front wheel assemblies 400, or arranged between the first connecting assembly 232 and the two front wheel assemblies 400, between the second connecting assembly 242 and the two rear wheel assemblies 400, or arranged between the second connecting assembly 242 and one of the rear wheel assemblies 400 or one of the front wheel assemblies 400.

[0379] Specifically, as shown in Figure 34 , the brake mechanism 800 includes brake levers 860, a brake operating member 870, brake pushing members 880, and a third reset member 890.

[0380] As shown in Figure 34 , the brake levers 860 are two, and are movably arranged in the connecting rods 2421. The brake operating member 870 is a brake pedal, which includes a first pedal 871 and a second pedal 872 connected with each other. In the embodiment, as shown in Figures 35 to 37 , the first pedal 871 is provided with a fixing hole 8711, and the second pedal 872 is provided with elastic fingers 8721, and the connection between the first pedal 871 and the second pedal 872 can be realized by the clamping of the elastic fingers 8721 and the fixing hole 8711. Of course, in other embodiments, the first pedal 871 and the second pedal 872 can also be connected by other ways, or the brake operating member 870 can be integrally formed as a whole, as shown in Figure 38 and Figure 39 . The brake pushing members 880 are two, and are arranged in the connecting rods 2421 in a spaced manner, and the first pedal 871 and the second pedal 872 are arranged outside the two brake pushing members 880. The two brake levers 860 are fixedly connected with the two brake pushing members 880. In the embodiment, the third reset member 890 is a spring. The third reset member 890 is arranged in the connecting rod 2421 and abuts against the two brake pushing members 880 at both ends.

[0381] The overall structure of the brake mechanism 800 is basically symmetrical with the connection between the first pedal 871 and the second pedal 872 as the boundary, and the structure of the brake mechanism 800 will be described below by taking the structure on the side of the first pedal 871 as an example:

[0382] As Figure 40 As shown, the brake lever 860 is arranged close to one end of the connecting rod 2421, i.e. close to the connecting sleeve 2422 of the corresponding side. The brake lever 860 is provided with a first slot 861 extending along the length direction of the connecting rod 2421. The first pin A20 is arranged in the first slot 861 of the brake lever 860 by penetrating the connecting rod 2421 and the connecting sleeve 2422. In this way, the movement of the brake lever 860 along the length direction of the connecting rod 2421 can be limited by the interaction between the first pin A20 and the first slot 861, and the movement stroke can also be limited.

[0383] Further, as shown, Figure 34 The wheel body 440 is provided with a plurality of second brake holes 441 arranged circumferentially and capable of cooperating with the brake lever 860, and the wheel mounting bracket 430 is provided with a communication hole 431 capable of being opposite and communicating with one of the plurality of second brake holes 441. The connecting sleeve 2422 is fixed to the wheel mounting bracket 430 and can communicate with one of the plurality of second brake holes 441 through the communication hole 431 of the wheel mounting bracket 430. The brake lever 860 has a third locking position and a third unlocking position. When the brake lever 860 is in the third locking position, as shown, Figure 40 The brake lever 860 can be inserted and cooperated with one of the plurality of second brake holes 441 through the communication hole 431, so as to prevent the wheel body 440 from rotating. When the brake lever 860 is in the third unlocking position, as shown, Figure 41 The brake lever 860 can be inserted and cooperated with one of the plurality of second brake holes 441 through the communication hole 431, so as to prevent the wheel body 440 from rotating. When the brake lever 860 is in the third unlocking position, as shown,

[0384] Further, as shown, Figure 35 The first pedal 871 is generally in an L-shaped structure, including a sleeving part 8712 and a treading part 8713 connected with each other. In this embodiment, the first pedal 871 is in an integral molding structure. Of course, in other embodiments, the first pedal 871 can also be connected by welding and the like by the sleeving part 8712 and the treading part 8713 independent of each other. As shown, Figure 72 The sleeving part 8712 is provided with a cylindrical mounting cavity 8712a, and the first cooperation part is arranged in the mounting cavity 8712a. In this embodiment, the first cooperation part is a push rib 8712b. The sleeving part 8712 is also provided with a display window 8712c capable of communicating with the mounting cavity 8712a. The treading part 8713 is used for the user to perform treading operation. In this embodiment, the first pedal 871 and the second pedal 872 are clamped and connected to be generally in a U-shaped structure.

[0385] Further, as shown, Figure 43As shown, the brake pushing piece 880 is substantially in a cylindrical structure, and one end of the brake pushing piece 880 is a matching end 881, which is provided with a second matching part and a third matching part capable of matching with the first matching part. In this embodiment, the second matching part and the third matching part are respectively a brake groove 882 capable of matching with the pushing rib 8712b and a positioning groove 883. The brake groove 882 is deeper than the positioning groove 883, that is, the groove bottom of the brake groove 882 is farther away from the outer edge of the matching end 881 than the groove bottom of the positioning groove 883. The outer wall of the brake pushing piece 880 is further provided with a first mark 884 and a second mark 885. The first mark 884 is arranged close to the brake groove 882, and the second mark 885 is arranged close to the positioning groove 883. The first mark 884 may, for example, be a red mark, indicating that the wheel assembly 400 is in a braking state. The second mark 885 may, for example, be a green mark, indicating that the wheel assembly 400 is in a non-braking state. Of course, in other embodiments, the first mark 884 and the second mark 885 can also be in other forms, as long as they can be easily distinguished.

[0386] Further, as shown in Figure 40 and Figure 41 , the brake pushing piece 880 is sleeved on the connecting rod 2421, and the matching end 881 of the brake pushing piece 880 faces the corresponding side of the wheel body 440, that is, the groove bottom of the brake groove 882 is farther away from the corresponding side of the wheel body 440 than the groove bottom of the positioning groove 883. The connecting rod 2421 is provided with a second slot hole 2421a, and the second pin A30 is arranged through the brake pushing piece 880, the second slot hole 2421a and the brake rod 860, so as to fixedly connect the brake rod 860 and the brake pushing piece 880, and at the same time, enable the brake pushing piece 880 and the brake rod 860 to move along the length direction of the connecting rod 2421 as a whole relative to the connecting rod 2421. In this embodiment, the size of the second slot hole 2421a is consistent with that of the first slot hole 861, so as to ensure that the first pin A20 and the second pin A30 can move synchronously with the brake rod 860. The sleeving part 8712 of the first pedal 871 is rotatably sleeved on the brake pushing piece 880, in other words, the brake pushing piece 880 is arranged in the mounting cavity 8712a. The pushing rib 8712b in the mounting cavity 8712a is arranged opposite to the matching end 881 of the brake pushing piece 880, and is located on the side of the matching end 881 close to the wheel assembly 400.

[0387] Further, the first pedal 871 or the brake operating piece 870 is rotatable relative to the first connecting assembly 232. The first pedal 871 has a first rotation position and a second rotation position. When the first pedal 871 is rotated to the first rotation position, as shown in Figure 40As shown, the first engaging portion engages with the second engaging portion, i.e. the pushing rib 8712b engages with the brake slot 882, the brake pushing piece 880 moves to a position where the brake lever 860 is located at the third locking position, i.e. the brake lever 860 moves to a position relatively close to the wheel body 440 and is inserted into one of the second brake holes 441, so that the brake mechanism 800 is in the brake state of preventing the wheel body 440 from rotating. At this time, the first mark 884 is just opposite to the display window 8712c, so as to prompt the user that the infant carrier has been braked. When the second pedal 872 is rotated to the second rotating position, as shown in Figure 41 As shown, the first engaging portion engages with the third engaging portion, i.e. the pushing rib 8712b engages with the positioning slot 883, the brake pushing piece 880 moves to a position where the brake lever 860 is located at the third unlocking position, i.e. the brake lever 860 moves to a position relatively far away from the wheel body 440 and is withdrawn from one of the second brake holes 441, so that the brake mechanism 800 is in the unbraked state of allowing the wheel body 440 to rotate. At this time, the second mark 885 is just opposite to the display window 8712c, so as to prompt the user that the infant carrier is unbraked.

[0388] Further, as shown in Figure 40 and Figure 41 The third reset piece 890 is arranged in the connecting rod 2421 and abuts against the brake pushing piece 880, and the third reset piece 890 always moves the brake lever 860 to the third locking position. In the embodiment, the third reset piece 890 is a spring. The third reset piece 890 is located at the approximate middle part of the connecting rod 2421, and the two ends thereof abut against the two brake pushing pieces 880 respectively.

[0389] The working principle of the brake mechanism 800 will be described in detail as follows:

[0390] When the brake needs to be released, as shown in Figure 1 and Figure 31 The user can lift the stepping part 8713 of the first pedal 871, since the first pedal 871 is connected with the second pedal 872, the stepping part 8713 of the first pedal 871 and the stepping part 8713 of the second pedal 872 are lifted simultaneously, so that the first pedal 871 is rotated from the first rotating position to the second rotating position, as shown in Figure 32 and Figure 33 The pushing rib 8712b on the first pedal 871 is switched from engaging with the brake slot 882 of the brake pushing piece 880 to engaging with the positioning slot 883, as shown in Figure 41As the depth of the positioning groove 883 is less than the depth of the brake groove 882, and the position of the first pedal 871 in the extension direction of the connecting rod 2421 is fixed, the brake pusher 880 moves away from the wheel body 440, and the brake rod 860 connected therewith moves from the third locking position to the third release position, the brake rod 860 exits from one of the second brake holes 441, the brake mechanism 800 is in the unbraked state, and the wheel body 440 can rotate. At this time, as the two brake pushers 880 actually move towards each other, the third return element 890 abutting between the two brake pushers 880 is compressed and deformed. At the same time, the second identifier 885 is opposite to the display window 8712c, thereby prompting the user that the infant carrier is unbraked.

[0391] When braking is needed, the process is reversed, and the user can step down the stepping part 8713 of the first pedal 871, so that the first pedal 871 rotates from the second rotating position to the first rotating position, as shown in Figure 1 and Figure 31 so that the push rib 8712b on the first pedal 871 is switched from cooperation with the positioning groove 883 of the brake pusher 880 to cooperation with the brake groove 882, and the brake pusher 880 moves towards the wheel body 440 under the elastic force of the third return element 890, as shown in Figure 40 At the same time, the brake pusher 880 drives the brake rod 860 connected therewith to move from the third release position to the third locking position, and the brake rod 860 is re-inserted into one of the second brake holes 441, the brake mechanism 800 is in the braking state, and the wheel body 440 cannot rotate.

[0392] The above-mentioned infant carrier has at least the following technical effects:

[0393] In the infant carrier, the seat assembly 100 is installed on the frame 200, and the conversion of the frame 200 between the unfolded state and the folded state can be realized through the switching mechanism 600, so that the infant carrier can be converted between the infant stroller and the automobile safety seat and other use modes, and the structure is simple and the operation is convenient.

[0394] As shown in Figures 44 to 47 Another embodiment of the utility model provides an infant carrier, which can include a bearing body 110, a moving assembly 900 and a frame 200. When the infant carrier is switched between use modes, the conversion structure of the moving assembly 900 is simple and easy to operate.

[0395] As shown in Figure 48As shown, the carrier body 110 has a carrier cavity 114 for carrying a baby, and the two ends of the carrier body 110 in the longitudinal direction are a headrest 115 and a legrest 116 respectively. The moving assembly 900 is generally in a U-shaped rod structure, including a handle body 980 and two handle rods 990 connected to the two ends of the handle body 980. The ends of the two handle rods 990 away from the handle body 980 are respectively pivotally connected to the two sides of the carrier body 110 in the transverse direction and are retractable. The pivot points of the two handle rods 990 and the carrier body 110 are located between the headrest 115 and the legrest 116.

[0396] As shown, Figure 48 The frame body 200 is pivotally connected to the carrier body 110. The pivot point of the frame body 200 and the carrier body 110 is slidable between a third position M and a fourth position N. In this embodiment, the third position M is close to the legrest 116 of the carrier body 110, and the fourth position N is close to the headrest 115 of the carrier body 110. The frame body 200 specifically includes a first support frame 230 and a second support frame 240 pivotally connected to each other. Both the first support frame 230 and the second support frame 240 are generally in an inverted U-shaped frame structure, and the two upper ends of the first support frame 230 are respectively pivotally connected to the two upper ends of the second support frame 240 on the carrier body 110. The two lower ends of the first support frame 230 and the two lower ends of the second support frame 240 are respectively connected to the wheel assemblies 400.

[0397] Further, the frame body 200 is switchable between an unfolded state and a folded state. As shown, Figures 44 to 46 When the frame body 200 is in the folded state, the pivot point of the frame body 200 and the carrier body 110 is located at the third position M, and the infant carrier can be in a rocking chair mode, a basket mode or a car safety seat mode. When the frame body 200 is in the folded state, the first support frame 230 and the second support frame 240 of the frame body 200 overlap each other, and the corresponding wheel assemblies 400 connected to the first support frame 230 and the second support frame 240 overlap each other. As shown, Figure 47 When the frame body 200 is in the unfolded state, the two lower ends of the first support frame 230 and the two lower ends of the second support frame 240 are away from each other, the pivot point of the frame body 200 and the carrier body 110 is located at the fourth position N, and the infant carrier can be in a stroller mode.

[0398] As shown, Figure 44 When the frame body 200 is in the folded state, and the moving assembly 900 is in the retracted state and is rotated to the position where the handle body 980 is located on the side of the headrest 115 away from the legrest 116, i.e. the rear position of the headrest 115, the infant carrier is in a rocking chair mode. At this time, the moving assembly 900 is not retractable but can be pivoted relative to the carrier body 110. As shown, Figure 45As shown, when the frame 200 is in the collapsed state, the mobile assembly 900 is in the retracted state and rotated to the vertical upward state, the infant carrier is in the basket mode. At this time, the mobile assembly 900 is also not extendable but can be pivoted relative to the carrier body 110. As shown in FIG. 1 1 A, the mobile assembly 900 is in the basket mode. Figure 46 As shown, when the frame 200 is in the collapsed state, the mobile assembly 900 is in the retracted state and rotated to the state that the handle body 980 is located at the front of the leg rest 116, away from the head rest 115, the infant carrier is in the car seat mode. At this time, the mobile assembly 900 is extendable and can be pivoted relative to the carrier body 110. At this time, the mobile assembly 900 can be used as the top rod of the car seat. The carrier body 110 can be provided with a pivotable ISOFIX connector 360, which can be extended to be fixed on the car seat when the infant carrier is in the car seat mode, and can be retracted to avoid unnecessary obstruction when the infant carrier is in other modes of use. As shown in FIG. 1 1 B, the mobile assembly 900 is in the car seat mode. Figure 47 As shown, when the frame 200 is in the collapsed state, the mobile assembly 900 is in the retracted state and rotated to the state that the handle body 980 is located at the front of the leg rest 116, away from the head rest 115, the infant carrier is in the car seat mode. At this time, the mobile assembly 900 is extendable and can be pivoted relative to the carrier body 110. At this time, the mobile assembly 900 can be used as the top rod of the car seat. The carrier body 110 can be provided with a pivotable ISOFIX connector 360, which can be extended to be fixed on the car seat when the infant carrier is in the car seat mode, and can be retracted to avoid unnecessary obstruction when the infant carrier is in other modes of use. As shown in FIG. 1 1 B, the mobile assembly 900 is in the car seat mode.

[0399] As shown, when the frame 200 is in the collapsed state, the mobile assembly 900 is in the retracted state and rotated to the state that the handle body 980 is located at the front of the leg rest 116, away from the head rest 115, the infant carrier is in the car seat mode. At this time, the mobile assembly 900 is extendable and can be pivoted relative to the carrier body 110. At this time, the mobile assembly 900 can be used as the top rod of the car seat. The carrier body 110 can be provided with a pivotable ISOFIX connector 360, which can be extended to be fixed on the car seat when the infant carrier is in the car seat mode, and can be retracted to avoid unnecessary obstruction when the infant carrier is in other modes of use. As shown in FIG. 1 1 B, the mobile assembly 900 is in the car seat mode. Figures 49 to 52 As shown, the infant carrier further comprises a length adjustment mechanism 960, a first limiting mechanism C00, an angle adjustment mechanism 500 and a second limiting mechanism D00. The length adjustment mechanism 960 is used to adjust the extension of the mobile assembly 900, so that the mobile assembly 900 can be switched between the extended state and the retracted state. When the mobile assembly 900 is in the retracted state and can be rotated relative to the carrier body 110, the first limiting mechanism C00 locks the length adjustment mechanism 960 to limit the extension of the mobile assembly 900. When the mobile assembly 900 is rotated to a preset angle, the first limiting mechanism C00 releases the lock on the length adjustment mechanism 960, so that the mobile assembly 900 can be switched between the extended state and the retracted state. The angle adjustment mechanism 500 is used to adjust the pivot of the mobile assembly 900 relative to the carrier body 110. When the mobile assembly 900 is switched to the extended state, the second limiting mechanism D00 locks the angle adjustment mechanism 500 to limit the pivot of the mobile assembly 900. When the mobile assembly 900 is switched to the retracted state, the second limiting mechanism D00 releases the lock on the angle adjustment mechanism 500, and the mobile assembly 900 can be pivoted.

[0400] In the embodiment, the two handle rods 990 are hollow rod structures, the hollow cavities of the two handle rods 990 are each provided with a length adjustment mechanism 960 and an angle adjustment mechanism 500, and the two handle rods 990 and the two sides of the transverse direction of the bearing body 110 are each provided with a first limiting mechanism C00 and a second limiting mechanism D00. The structure and function of one side of the handle rod 990, the length adjustment mechanism 960, the angle adjustment mechanism 500, the first limiting mechanism C00 and the second limiting mechanism D00 are described in detail below.

[0401] Specifically, as shown in Figures 49 to 52 , the handle rod 990 includes a first handle 991 and a second handle 992 sleeved outside the first handle 991. The first handle 991 can slide relative to the second handle 992. One of the first handle 991 and the second handle 992 is provided with at least one first gear hole 9911 (see Figure 56 ), and the other of the first handle 991 and the second handle 992 is provided with at least two second gear holes 9921. In the embodiment, the first handle 991 is provided with one first gear hole 9911, and the second handle 992 is provided with multiple second gear holes 9921 of different heights, i.e., multiple second gear holes 9921 are arranged along the length extension direction of the second handle 992. In the embodiment, at least part of the first handle 991 is located above the second handle 992. The moving assembly 900 further includes an adjustment sliding piece 993, which is sleeved outside the first handle 991 and is slidable along the first handle 991. As shown in Figure 52 and Figure 53 , the end of the second handle 992 away from the first handle 991, i.e., the lower end of the second handle 992, is connected with a handle joint 994 for pivoting with the bearing body 110. In the embodiment, the lower end of the second handle 992 is inserted into a connecting sleeve 9943 (see later) of the handle joint 994.

[0402] As shown in Figures 49 to 51 , the length adjustment mechanism 960 is arranged in the hollow cavity of the first handle 991 and specifically includes a length adjustment handle 966, a driving block 967, a positioning block 968 and a length reset piece 969 (see Figure 56 ).

[0403] As shown in Figure 49 , the length adjustment handle 966 is generally in a long rod structure and is arranged in the hollow cavity of the first handle 991. One end of the length adjustment handle 966 is connected with the adjustment sliding piece 993, and the other end of the length adjustment handle 966 is a sliding block 9661 and is connected with the driving block 967.

[0404] As shown in Figure 49 and Figure 50As shown, the driving block 967 has a mounting groove 9671 extending along the length direction of the length adjustment handle 966 (i.e. the first direction D1), and the sliding block 9661 is at least partially sleeved on the driving block 967 and is movable along the mounting groove 9671. The driving block 967 is fixed in the hollow inner cavity of the first handle 991, and the driving block 967 is generally in the cuboid structure. The driving block 967 is provided with a through groove 9672 penetrating through two side faces of the driving block 967 along the second direction D2. Of course, the through groove 9672 can also penetrate through only one side of the driving block 967 along the second direction D2. In the embodiment, the second direction D2 is generally perpendicular to the first direction D1. At least one of the other two side faces of the driving block 967 is provided with a first guide groove 9673 which is in communication with the through groove 9672 and extends along the second direction D2. The sliding block 9661 is provided with a second sliding groove 9661a which extends along the third direction D3 and is in communication with the through groove 9672 and the first guide groove 9673. The third direction D3 intersects with the first direction D1 and the second direction D2 and is not perpendicular to the first direction D1 and the second direction D2.

[0405] As shown in Figure 49 and Figure 50 , the positioning block 968 is movably arranged in the driving block 967, and the positioning block 968 is used for positioning the moving assembly 900 in the extended state or the retracted state. Specifically, the positioning block 968 is movably arranged in the through groove 9672 of the driving block 967, and the positioning block 968 has a positioning end 9681. One side or both sides of the positioning block 968 protrude with a first sliding pin 9682 which is arranged through the first guide groove 9673 and the second sliding groove 9661a.

[0406] Please refer to Figure 56 , the length reset member 969 is used for biasing the length adjustment handle 966, so that the length adjustment handle 966 drives the positioning block 968 to move in the direction of the extended through groove 9672. In the embodiment, the length reset member 969 is a spring. Specifically, the driving block 967 is provided with a reset groove 9675, the upper side groove wall of the reset groove 9675 is provided with a first sleeving column 9676, and the sliding block 9661 of the length adjustment handle 966 has a second sleeving column 9661b which extends into the reset groove 9675, and the second sleeving column 9661b is located on the lower side of the first sleeving column 9676, i.e. the first sleeving column 9676 is located on the first direction D1 of the second sleeving column 9661b. The length reset member 969 is arranged in the reset groove 9675, and the two ends of the length reset member 969 are sleeved on the first sleeving column 9676 and the second sleeving column 9661b respectively, and the two ends of the length reset member 969 are in abutment with the driving block 967 and the sliding block 9661 respectively.

[0407] As shown in Figure 49 , Figure 50 and Figure 56As shown, the positioning block 968 can extend out of the through slot 9672 to be inserted into a first gear hole 9911 and a second gear hole 9921 to fix the first handle 991 and the second handle 992 relative to each other, thereby positioning the moving assembly 900 in the extended state, the retracted state or a state between the extended state and the retracted state, i.e. at a certain height position. When the adjusting slide 993 is operated to move in the first direction D1, the adjusting slide 993 drives the length adjusting handle 966 to move in the first direction D1, the first sliding pin 9682 slides in the first guide slot 9673 and the second sliding slot 9661a, and simultaneously drives the positioning block 968 to move in the second direction D2 to retract into the through slot 9672, thereby releasing the positioning of the moving assembly 900, and the first handle 991 and the second handle 992 can slide relative to each other to switch between the extended state and the retracted state. When the first handle 991 is slid to a desired position relative to the second handle 992, the external force applied to the adjusting slide 993 can be released, and the sliding block 9661 of the length adjusting handle 966 can drive the length adjusting handle 966 to move in the opposite direction of the first direction D1 under the action of the length returning member 969, the first sliding pin 9682 slides in the first guide slot 9673 and the second sliding slot 9661a, and simultaneously drives the positioning block 968 to move in the opposite direction of the second direction D2 to extend out of the through slot 9672, so that the positioning end 9681 of the positioning block 968 is inserted into another first gear hole 9911 and another second gear hole 9921 to fix the first handle 991 and the second handle 992 relative to each other, thereby positioning the moving assembly 900 at another height position.

[0408] Specifically, as shown in Figure 44 , Figure 45 and Figure 52 , the first limiting mechanism C00 includes a fourth locking member C10, a first driving member C20, a first elastic member C30 and a limiting pin C40.

[0409] As shown in Figure 51 and Figure 52As shown, the driving block 967 is provided with a limiting groove 9674 on the side facing the bearing body 110. In the embodiment, the limiting groove 9674 extends along the fourth direction D4 and is located below the first guide groove 9673. In the embodiment, the fourth direction D4 is perpendicular to the first direction D1 and the second direction D2. The fourth locking member C10 can selectively lock or release the length adjustment mechanism 960. Specifically, the handle joint 994 includes a joint body 8841, a connecting sleeve 9943 protruding above the joint body 8841, and a mounting member 9942 fixed to the side of the connecting sleeve 9943 facing the bearing body 110. The fourth locking member C10 is movably arranged on the mounting member 9942 and can move along the fourth direction D4 or the opposite direction of the fourth direction D4 to approach or move away from the driving block 967. In the embodiment, the fourth locking member C10 is a limiting post provided with a locking end C11 and an abutting end C12. The locking end C11 can be selectively locked in the limiting groove 9674 to lock or release the length adjustment mechanism 960. The abutting end C12 is provided with a stroke groove C121 extending along the fourth direction D4. One end of a limiting pin C40 is connected to the mounting member 9942 and the other end is inserted into the stroke groove C121. By arranging the limiting pin C40 and the stroke groove C121, the sliding stroke of the abutting end C12 or the fourth locking member C10 can be limited.

[0410] Further, as shown in Figure 44 、 Figure 45 and Figure 52 , at least part of the first driving member C20 can drive the fourth locking member C10 to move and lock the length adjustment mechanism 960. The fourth locking member C10 can cooperate with the release limiting portion C21 to release the lock of the length adjustment mechanism 960. Specifically, the first driving member C20 is a pushing rib arranged on the bearing body 110 and protruding towards the side of the moving assembly 900. In the embodiment, the pushing rib is an arc-shaped rib, and the arc direction of the arc-shaped rib is consistent with the arc direction of the pivoting of the moving assembly 900. The first driving member C20 has a release limiting portion C21. In the embodiment, the release limiting portion C21 is a release groove arranged on the end of the pushing rib close to the legrest portion 116.

[0411] As shown in Figure 52 , when the moving assembly 900 rotates relative to the bearing body 110, the first driving member C20 drives the fourth locking member C10 to move in the transverse direction of the bearing body 110, i.e., the fourth direction D4, and lock the length adjustment mechanism 960. Specifically, when the moving assembly 900 rotates relative to the bearing body 110, the pushing rib pushes the abutting end C12 to drive the locking end C11 to move towards the limiting groove 9674 and be inserted into the limiting groove 9674 to lock the length adjustment mechanism 960. As shown in Figure 44 、 Figure 45 and Figure 54As shown, when the moving assembly 900 is rotated to a preset angle, the abutting end C12 is located in the restriction release portion C21, the locking end C11 is disengaged from the limiting groove 9674, the locking of the length adjustment mechanism 960 is released, and the moving assembly 900 can be switched between the retracted state and the extended state.

[0412] In this embodiment, as shown, the first elastic member C30 is a spring and biases the fourth locking member C10 in the opposite direction of the fourth direction D4. Specifically, the first elastic member C30 is sleeved on the locking end C11 of the fourth locking member C10, and the two ends are respectively abutted against the abutting end C12 of the first limiting member and the outer wall of the first handle 991. When the moving assembly 900 is rotated to a preset angle, the elastic restoring force of the first elastic member C30 drives the locking end C11 to move and disengage from the limiting groove 9674, so as to drive the abutting end C12 to be contained in the restriction release portion C21, the locking of the length adjustment mechanism 960 is released, and the moving assembly 900 can be switched between the retracted state and the extended state. Figure 52

[0413] Thus, as shown in Figure 44 , Figure 45 and Figure 52 , when the infant carrier is in the rocking chair mode or the basket mode, since the moving assembly 900 is rotated to the side of the headrest portion 115 away from the legrest portion 116 or the moving assembly 900 is in the vertically upward state, the first driving member C20 abuts against the abutting end C12 of the fourth locking member C10, so that the locking end C11 of the first driving member C20 is inserted into the limiting groove 9674 of the driving block 967. Since the driving block 967 is fixed in the hollow inner cavity of the first handle 991, the first handle 991 cannot move relative to the second handle 992, the length adjustment mechanism 960 is locked, and the moving assembly 900 cannot be telescopic. Such an arrangement can facilitate the movement of the infant carrier, especially when the infant carrier is in the basket mode, not only can the basket be conveniently carried, but also can avoid the risk of accidental extension of the moving assembly 900, such as causing the baby to fall, greatly improving the safety performance.

[0414] As shown in Figure 46 , Figure 47 and Figure 54 ​As shown, when the infant carrier is in the car seat mode or the stroller mode, the moving assembly 900 is rotated to the preset angle as mentioned above, the fourth locking member C10 is opposite to the releasing portion C21, the elastic restoring force of the first elastic member C30 drives the locking end C11 to move in the opposite direction of the fourth direction D4 to disengage from the limiting groove 9674, so as to drive the abutting end C12 to be accommodated in the releasing portion C21, the locking of the length adjusting mechanism 960 is released, and the moving assembly 900 can be switched between the retracted state and the extended state. In this way, when the infant carrier is in the car seat mode or the stroller mode, the length of the moving assembly 900 can be adjusted as needed.

[0415] Specifically, as shown in Figures 55 to 58 , the angle adjusting mechanism 500 includes a pivot button 560, an angle locking member 570, and an angle resetting member 580.

[0416] As shown in Figure 50 and Figure 51 , the pivot button 560 includes a button body 561 in the shape of a substantially circular sheet and four button protrusions 562 protruding from one side surface of the button body 561. The four button protrusions 562 are evenly arranged along the circumference of the button body 561. Of course, in other embodiments, the number and arrangement position of the button protrusions 562 can be adjusted as needed. The pivot button 560 can be moved in the fourth direction D4 or the opposite direction of the fourth direction D4.

[0417] Specifically, as shown in Figure 53 and Figure 56 , the joint body 8841 of the handle joint 994 is in the shape of a substantially disc. The joint body 8841 opposite to the bearing body 110 is provided with a button mounting groove 8841a for mounting the pivot button 560, and the groove bottom of the button mounting groove 8841a is provided with four through holes 9941b, which are arranged corresponding to the four button protrusions 562. The button body 561 is movably arranged in the button mounting groove 8841a, and the four button protrusions 562 can pass through the four through holes 9941b, respectively. The end of the four button protrusions 562 away from the button body 561 is provided with a limiting hook portion 5621, which is used to abut against the surface of the joint body 8841 facing the bearing body 110 to prevent the pivot button 560 from falling off the handle joint 994. As shown in Figure 53As shown, the first accommodating groove 9941c is provided on the side of the joint body 8841 facing the carrying body 110. In this embodiment, the first accommodating groove 9941c is a substantially cylindrical groove. A first pivot shaft 9941d is protruded from the middle of the bottom of the first accommodating groove 9941c. At least one arc-shaped angle limiting groove 9941e is provided on the bottom of the first accommodating groove 9941c. A plurality of first angle adjusting grooves 9941f and a plurality of second angle adjusting grooves 9941g are annularly provided on the wall of the first accommodating groove 9941c. In this embodiment, the first angle adjusting grooves 9941f are tooth-shaped grooves, and there are a plurality of tooth-shaped grooves annularly provided on the wall of the first accommodating groove 9941c. The second angle adjusting grooves 9941g are substantially square grooves, and there are four square grooves uniformly provided on the wall of the first accommodating groove 9941c, i.e., the wall of the first accommodating groove 9941c between every two square grooves is substantially an arc-shaped wall with a central angle of 90 degrees. In other embodiments, the shapes and numbers of the first angle adjusting grooves 9941f and the second angle adjusting grooves 9941g can also be adjusted as needed.

[0418] Further, as shown, Figure 58 The side of the carrying body 110 is provided with a pivot joint 117. The pivot joint 117 has a second accommodating groove 1171, which is a substantially cylindrical groove with the same shape as the first accommodating groove 9941c. A second pivot shaft 1172 is protruded from the middle of the bottom of the second accommodating groove 1171, and the second pivot shaft 1172 is provided with a pivot groove 11721 extending along its length direction. The handle joint 994 can be inserted into the pivot groove 11721 of the second pivot shaft 1172 through the first pivot shaft 9941d to achieve the pivot connection with the carrying body 110, and at this time, the first accommodating groove 9941c and the second accommodating groove 1171 jointly form a first accommodating cavity 101. The angle locking member 570 and the angle resetting member 580 are both provided in the first accommodating cavity 101. The angle locking member 570 is substantially in a cylindrical structure, and a pivot hole 571 is provided in the substantially middle part of the angle locking member 570. The angle locking member 570 is sleeved on the outside of the second pivot shaft 1172 through the pivot hole 571 so as to move along the extension direction of the second pivot shaft 1172. In this embodiment, as shown, Figure 59As shown, the groove wall of the second accommodating groove 1171 is provided with a first pivot limiting groove 11711 and a second pivot limiting groove 11712 for limiting the rotation of the angle locking piece 570. In this embodiment, the first pivot limiting groove 11711 is a tooth-shaped groove, and there are multiple tooth-shaped grooves arranged on the groove wall of the first accommodating groove 9941c. The second pivot limiting groove 11712 is a square groove, and there are two square grooves arranged uniformly on the groove wall of the first accommodating groove 9941c, i.e., the groove wall of the first accommodating groove 9941c between the two square grooves is an arc-shaped wall with a central angle of about 180 degrees. In other embodiments, the shapes and numbers of the first pivot limiting groove 11711 and the second pivot limiting groove 11712 can also be adjusted as needed.

[0419] The angle locking piece 570 is switchable between the first locking position and the first release position. The outer periphery of the angle locking piece 570 is provided with a first angle adjusting protrusion 572 and a second angle adjusting protrusion 574. The shapes and numbers of the first angle adjusting protrusion 572 and the second angle adjusting protrusion 574 correspond to the shapes and numbers of the first pivot limiting groove 11711 and the second pivot limiting groove 11712, respectively, i.e., the first angle adjusting protrusion 572 has multiple tooth-shaped protrusions, and the second angle adjusting protrusion 574 has two square protrusions. In this embodiment, at least part of the angle locking piece 570 is always located in the first accommodating groove 9941c, and the first angle adjusting protrusion 572 and the second angle adjusting protrusion 574 of the angle locking piece 570 are always matched with the first pivot limiting groove 11711 and the second pivot limiting groove 11712 to prevent the angle locking piece 570 from pivoting relative to the pivot joint 117, i.e., to ensure that the angle locking piece 570 always moves along the extension direction of the second pivot shaft 1172.

[0420] As shown in FIG. 7, the angle locking piece 570 is in the first locking position, and the first angle adjusting protrusion 572 of the angle locking piece 570 is matched with the first pivot limiting groove 11711, and the second angle adjusting protrusion 574 of the angle locking piece 570 is matched with the second pivot limiting groove 11712. Figures 58 to 60As shown, when the angle locking member 570 is in the first locking position, the angle locking member 570 is located in both the first accommodating groove 9941c and the second accommodating groove 1171, and the at least one first angle adjusting protrusion 572 can be inserted into any of the first angle adjusting grooves 9941f, and the at least one second angle adjusting protrusion 574 can be inserted into any of the second angle adjusting grooves 9941g to fix the handle joint 994 at a certain angle position relative to the carrier body 110. In the embodiment, since the second angle adjusting protrusion 574 has two opposite protrusions, and the second angle adjusting grooves 9941g have four circumferentially uniform grooves on the groove wall of the first accommodating groove 9941c, the handle joint 994 has four angle pivot positions relative to the pivot joint 117. Of course, in other embodiments, the number of angle pivot positions of the handle joint 994 relative to the pivot joint 117 can be changed by adjusting the positions and number of the second angle adjusting protrusions 574 and the second angle adjusting grooves 9941g. The side of the angle locking member 570 away from the carrier body 110 is also provided with at least one angle limiting protrusion 573. The at least one angle limiting protrusion 573 can be inserted into at least one arc-shaped angle limiting groove 9941e to limit the rotation angle of the handle joint 994. In the embodiment, the angle limiting protrusion 573 and the angle limiting groove 9941e each have two. When the angle locking member 570 is in the first unlocking position, the angle locking member 570 is located only in the second accommodating groove 1171, the first angle adjusting protrusion 572 of the angle locking member 570 is separated from the corresponding first angle adjusting groove 9941f, the second angle adjusting protrusion 574 of the angle locking member 570 is separated from the corresponding second angle adjusting groove 9941g, the angle adjusting mechanism 500 is unlocked, and the handle joint 994 can rotate relative to the pivot joint 117, i.e., the inclination angle of the moving assembly 900 can be adjusted.

[0421] As shown in FIG. 6, the angle adjusting mechanism 500 includes an angle locking member 570, an angle adjusting member 580, and an angle limiting member 590. Figures 58 to 60 The angle locking member 570 is a plate-shaped member, and the angle adjusting member 580 is a spring.

[0422] When it is necessary to adjust the inclination angle of the moving assembly 900, the angle locking member 570 is moved from the first locking position to the first unlocking position, and the angle adjusting member 580 is compressed to generate a force to drive the angle locking member 570 to move along the second pivot shaft 1172. Figure 58As shown, the pivot button 560 can be pressed in the fourth direction D4, so that the pivot button 560 pushes the angle locking member 570 through the button protrusion 562 thereof from the first locking position to the first unlocking position, so that the angle adjusting protrusions 622 of the angle locking member 570 are disengaged from the angle adjusting slots 2241f, the angle adjusting mechanism 500 is unlocked, at this time the moving assembly 900 can be rotated so that the handle joint 994 is rotated to a desired angle position relative to the pivot joint 117. Then the pressing force applied to the pivot button 560 can be removed, so that the angle locking member 570 is moved to the first locking position in the opposite direction of the fourth direction D4 under the elastic restoring force of the angle resetting member 580, and each angle adjusting protrusion 622 is reinserted into a new angle adjusting slot 2241f, that is, the moving assembly 900 is locked at the desired angle position. In the embodiment, the angle adjusting slot 2241f is a tooth slot, and the angle locking member 570 is a gear-like structure.

[0423] Specifically, as shown in Figures 61 to 63 The second limiting mechanism D00 is arranged in the hollow inner cavity of the second handle 992. The second limiting mechanism D00 includes a second driving member D10, a fifth locking member D20 and a fourth resetting member D30.

[0424] As shown in Figures 61 to 63 The second driving member D10 is generally rod-shaped, and a substantially middle portion of the second driving member D10 is pivotally connected to the cavity wall of the hollow inner cavity of the second handle 992, forming a structure similar to a seesaw. The second driving member D10 is provided with a first connecting end D11 on one side of the pivot point, and is provided with a sleeving protrusion D12 on the other side of the pivot point. The fifth locking member D20 is generally rod-shaped, and is provided with a clamping end D21 clamped to the first connecting end D11 of the second driving member D10 and a stop end D22 preventing the pivot of the angle adjusting mechanism 500. Specifically, the first connecting end D11 of the second driving member D10 is provided with a buckle hole D111, and the clamping end D21 of the fifth locking member D20 is provided with a hook D211 clamped in the buckle hole D111. The second driving member D10 can drive the fifth locking member D20 to move between the second locking position and the second unlocking position. When the second driving member D10 moves to the second locking position, as shown in FIG. 63 The stop end D22 moves to the pressing path of the pivot button 560, that is, between the pivot button 560 and the angle locking member 570, blocking the pressing of the pivot button 560, and locking the angle adjustment of the moving assembly 900 by the angle adjusting mechanism 500. As shown in FIG. 51 When the second driving member D10 moves to the second unlocking position, the stop end D22 moves out of the pressing path of the pivot button 560, and the pivot button 560 can be pressed, the locking of the angle adjusting mechanism 500 is released, and the inclination angle of the moving assembly 900 can be adjusted.

[0425] In this embodiment, as shown in FIG. 62 and FIG. 63 , the fourth reset member D30 is a spring, and is used to bias the second driving member D10 to pivot so that the fifth locking member D20 moves to the second locking position. Specifically, a fixed seat 995 is fixed in the hollow inner cavity of the second handle 992. One end of the fourth reset member D30 is sleeved on the sleeving protrusion D12 of the second driving member D10 and abuts against at least part of the second driving member D10, and the other end of the fourth reset member D30 is fixed on the fixed seat 995. The fixed seat 995 is provided with a through hole 9951, and the stop end D22 of the fifth locking member D20 can pass through the through hole 9951 and be inserted into the pressing path of the pivot button 560.

[0426] Further, as shown in FIG. 51 and FIG. 61 , the second driving member D10 can selectively abut or separate from the length adjusting mechanism 960. Specifically, as shown in FIG. 51 , when the moving assembly 900 is in the retracted state, the first handle 991 moves to the opposite direction of the first direction D1 relative to the second handle 992 until the driving block 967 abuts against the second driving member D10, the second driving member D10 pivots in the fifth direction D5, and drives the fifth locking member D20 to move in the first direction D1, that is, to move away from the pivot button 560 to exit the pressing path of the pivot button 560, at this time the fourth reset member D30 is compressed. The pivot button 560 can be pressed, the locking of the angle adjusting mechanism 500 is released, and the inclination angle of the moving assembly 900 can be adjusted. As shown in FIG. 61 , when the moving assembly 900 is adjusted to a non-retracted state, that is, the moving assembly 900 is in an extended state or a state between the extended state and the retracted state, the driving block 967 provided in the first handle 991 no longer abuts against the second driving member D10, then the second driving member D10 pivots in the opposite direction of the fifth direction D5 under the elastic restoring force of the fourth reset member D30, so that the fifth locking member D20 moves in the opposite direction of the first direction D1 to the second locking position, that is, the stop end D22 of the fifth locking member D20 is inserted into the pressing path of the pivot button 560, blocks the pressing of the pivot button 560, locks the angle adjustment of the angle adjusting mechanism 500 to the moving assembly 900, and the moving assembly 900 cannot rotate relative to the carrier body 110.

[0427] As shown in FIG. 47 , FIGS. 61-63As shown, when the infant carrier is in the stroller mode, since the moving assembly 900 is generally in the extended state or in a state between the extended state and the contracted state, the driving block 967 arranged in the first handle 991 does not abut against the second driving member D10, so that the second driving member D10 is pivoted to a position where the fifth locking member D20 is in the second locking position under the elastic force of the fourth reset member D30, the stop end D22 of the fifth locking member D20 is inserted into the pressing path of the pivoting button 560, thereby blocking the pressing of the pivoting button 560, the angle adjustment of the moving assembly 900 by the angle adjustment mechanism 500, and the moving assembly 900 cannot rotate relative to the carrier body 110. In this way, the user can push the stroller without the inclination angle of the moving assembly 900 being accidentally pivoted due to misoperation, which facilitates the pushing of the stroller and avoids potential safety hazards.

[0428] As shown in FIGS. 44-46 and FIG. 50 , FIG. 51 As shown, when the infant carrier is in the stroller mode, since the moving assembly 900 is generally in the extended state or in a state between the extended state and the contracted state, the driving block 967 arranged in the first handle 991 does not abut against the second driving member D10, so that the second driving member D10 is pivoted to a position where the fifth locking member D20 is in the second locking position under the elastic force of the fourth reset member D30, the stop end D22 of the fifth locking member D20 is inserted into the pressing path of the pivoting button 560, thereby blocking the pressing of the pivoting button 560, the angle adjustment of the moving assembly 900 by the angle adjustment mechanism 500, and the moving assembly 900 cannot rotate relative to the carrier body 110. In this way, the user can push the stroller without the inclination angle of the moving assembly 900 being accidentally pivoted due to misoperation, which facilitates the pushing of the stroller and avoids potential safety hazards.

[0429] It should be noted that in other embodiments, the infant carrier of the present application can only include one of the first limiting mechanism C00 and the second limiting mechanism D00.

[0430] The infant carrier described above has at least the following technical effects:

[0431] The mobile assembly 900 is pivoted to the carrying body 110 and is retractable, and the length adjusting mechanism 960 and the angle adjusting mechanism 500 are arranged on the mobile assembly 900. When the mobile assembly 900 is in the retracted state and can rotate relative to the carrying body 110, the first limiting mechanism C00 can lock the length adjusting mechanism 960 to limit the retraction of the mobile assembly 900, so that when the baby carrier is in the rocking chair or basket mode, the mobile assembly 900 cannot be lengthened, which not only facilitates the carrying of the basket, but also avoids the security risks such as the baby falling off the carrying body 110 caused by the lengthening of the mobile assembly 900 due to misoperation. When the mobile assembly 900 is rotated to a preset angle, the first limiting mechanism C00 releases the locking of the length adjusting mechanism 960, so that the mobile assembly 900 can be switched between the extended state and the retracted state, so that when the baby carrier is in the stroller or car safety seat mode, the length of the mobile assembly 900 can be adjusted as needed. When the mobile assembly 900 is switched to the extended state, the second limiting mechanism D00 locks the angle adjusting mechanism 500 to limit the pivoting of the mobile assembly 900, so that when the baby carrier is in the stroller mode, the mobile assembly 900 cannot be pivoted, and the inclination angle of the mobile assembly 900 of the stroller is fixed, facilitating the user to push. When the mobile assembly 900 is switched to the retracted state, the second limiting mechanism D00 releases the locking of the angle adjusting mechanism 500, and the mobile assembly 900 can be pivoted, so that when the baby carrier is in the rocking chair or basket or car safety seat mode, the mobile assembly 900 can be pivoted to the required angle. The conversion structure of the mobile assembly 900 is simple and convenient to operate.

[0432] According to another embodiment of the utility model, a baby carrier is provided. FIG. 64As shown, the infant carrier comprises a seat assembly 100, a frame 200 and a base 300. The frame 200 is switchable between an unfolded state and a folded state, and the frame 200 is connected with the seat assembly 100. The base 300 is connectable to the frame 200 and is movable with the frame 200 between the unfolded state and the folded state. Wherein, when the frame 200 is in the unfolded state, the infant carrier is adapted to be used as a stroller, and when the frame 200 is in the folded state, the infant carrier is adapted to be used as a safety seat, which can be directly placed on a vehicle seat and fixed on the vehicle seat by at least one of a safety belt and an ISOFIX mode. The base 300 is adapted to move towards the seat assembly 100 when the frame 200 is switched from the unfolded state to the folded state. Specifically, the angle between the seat assembly 100 and the base 300 remains unchanged when the frame 200 is switched between the unfolded state and the folded state. More specifically, the seat assembly 100 always maintains a constant angle parallel to the ground when the frame 200 is switched between the unfolded state and the folded state, so that the infant carrier is stable during the conversion. Even if the infant in the stroller is not taken out, the conversion from the stroller mode to the safety seat mode can be safely and conveniently achieved. The infant carrier of the present embodiment can realize the switching between the stroller and the safety seat by folding and unfolding the frame 200, which has a simple structure, good stability, and is convenient to operate. In addition, the infant carrier can also maximize the use of space when used as a safety seat, which is convenient to carry and install.

[0433] In an embodiment, as FIGS. 64-67As shown, the frame body 200 comprises a rear support 210 and a front support 220. The rear support 210 comprises an upper rear leg 211, a lower rear leg 212 and a first connecting rod 213. The upper rear leg 211 is pivotably connected with the seat assembly 100, and the pivot points of the two are the fourth pivot point P4. The upper rear leg 211 is pivotably connected with the lower rear leg 212, and the pivot points of the two are the fifth pivot point P5. The upper rear leg 211 comprises a first upper rear leg 211a and a second upper rear leg 211b, which are respectively pivotably connected to the two sides of the seat assembly 100. The lower rear leg 212 comprises a first lower rear leg 212a and a second lower rear leg 212b, the first lower rear leg 212a is pivotably connected with the first upper rear leg 211a, and the second lower rear leg 212b is pivotably connected with the second upper rear leg 211b. The two ends of the first connecting rod 213 are respectively connected to the first lower rear leg 212a and the second lower rear leg 212b. The base 300 is pivotably connected with the lower rear leg 212 through the first connecting rod 213, and the pivot connection point of the base 300 and the lower rear leg 212 is the sixth pivot point P6. Specifically, the first connecting rod 213 is fixedly connected with the first lower rear leg 212a and the second lower rear leg 212b. At least a part of the base 300 is located between the first lower rear leg 212a and the second lower rear leg 212b, the first connecting rod 213 is arranged to pass through this part of the base 300, and the base 300 is pivotably connected to the first connecting rod 213. In this embodiment, when the frame body 200 is in the unfolded state, the fifth pivot point P5 is arranged to deviate from the line connecting the fourth pivot point P4 and the sixth pivot point P6, and in the vertical direction, the fifth pivot point P5 is located between the fourth pivot point P4 and the sixth pivot point P6, so that when the frame body 200 is in the folded state, the distance between the end of the lower rear leg 212 away from the fifth pivot point P5 and the upper rear leg 211 is smaller. When the frame body 200 is in the folded state, in the horizontal direction, the sixth pivot point P6 is located between the fourth pivot point P4 and the fifth pivot point P5. It should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal" and the like used in this embodiment are all with reference to the baby carrier as a trolley in use. FIG. 64

[0434] As FIGS. 64-67 ​As shown, the front support 220 includes an upper front leg 221 and a lower front leg 222, the upper front leg 221 is pivotally connected with the upper rear leg 211, and the pivot points of the two are the seventh pivot point P7. Among them, in the horizontal direction, the seventh pivot point P7 is located between the fourth pivot point P4 and the fifth pivot point P5. The upper front leg 221 is pivotally connected with the lower front leg 222, and the pivot points of the two are the eighth pivot point P8. The lower front leg 222 is respectively pivotally connected with the base 300, and the pivot points of the two are the ninth pivot point P9. Among them, the upper front leg 221 includes a first upper front leg 221a and a second upper front leg 221b, and the lower front leg 222 includes a first lower front leg 222a and a second lower front leg 222b. Both ends of the first upper front leg 221a are respectively pivotally connected with the first upper rear leg 211a and the first lower front leg 222a. Both ends of the second upper front leg 221b are respectively pivotally connected with the second upper rear leg 211b and the second lower front leg 222b. The front support 220 further includes a second connecting rod 223, both ends of the second connecting rod 223 are respectively connected to the first lower front leg 222a and the second lower front leg 222b, and the base 300 is pivotally connected to the second connecting rod 223, more specifically, the middle part of the second connecting rod 223 is provided with a pivot part 224, and the base 300 is pivotally connected to the pivot part 224. When the frame body 200 is in the unfolded state, in the vertical direction, the eighth pivot point P8 is located between the seventh pivot point P7 and the ninth pivot point P9. When the frame body 200 is in the folded state, in the horizontal direction, the ninth pivot point P9 is located between the eighth pivot point P8 and the seventh pivot point P7.

[0435] According to the infant carrier of the present embodiment, with reference to FIGS. 65-67 During the switching of the frame body 200 from the unfolded state to the folded state, the upper front leg 221 and the upper rear leg 211 are pivoted outwardly relative to each other, that is, the eighth pivot point P8 and the fifth pivot point P5 are away from each other; the lower front leg 222 and the lower rear leg 212 are folded inwardly, that is, the end of the lower front leg 222 away from the eighth pivot point P8 and the end of the lower rear leg 212 away from the fifth pivot point P5 are close to each other. The switching process of the frame body 200 from the folded state to the unfolded state is just the opposite of the above-mentioned switching process of the frame body 200 from the unfolded state to the folded state. In the present embodiment, any one or more of the lower front leg 222, the lower rear leg 212, the upper front leg 221 or the upper rear leg 211 subjected to external force can drive the remaining components to pivot at the same time, so that the switching of the frame body 200 between the unfolded state and the folded state is realized through the linkage of multiple components.

[0436] In the present embodiment, with reference to FIGS. 65-67The lower front leg 222 comprises a first connecting section 2221 and a second connecting section 2222, and the first connecting section 2221 is arranged at an angle with the second connecting section 2222, so that when the frame 200 is in the collapsed state, the end of the second connecting section 2222 can be closer to the upper front leg 221, thereby reducing the overall volume of the infant carrier when used as a safety seat, facilitating carrying and installation.

[0437] In an embodiment, as shown in FIGS. 64-67 , the infant carrier further comprises a plurality of wheel assemblies 400 connected to the frame 200 respectively. The plurality of wheel assemblies 400 comprises two front wheel assemblies 420 and two rear wheel assemblies 410, and the two rear wheel assemblies 410 are connected to the two lower rear legs 212 respectively, and the two front wheel assemblies 420 are connected to the two lower front legs 222 respectively. The plurality of wheel assemblies 400 comprises wheels 411, 421 and mudguards 412, and the wheels 411, 421 are pivotably connected to the lower rear legs 212 and the lower front legs 222 respectively. When the frame 200 is in the collapsed state, the lowest points of the plurality of wheels 411, 421 are higher than the bottom surface of the base 300. In this way, when the infant carrier is used as a safety seat, the bottom surface of the base 300 can be directly in contact with the vehicle seat, so that the safety seat can be placed more stably on the vehicle seat, and at the same time, the wheels 411, 421 are prevented from dirtying the vehicle seat. In the present embodiment, the bottom surface 319 of the base 300 is generally planar (see FIG. 68 ), so that the base 300 can be placed stably on the vehicle seat, increasing the safety of the infant carrier when used as a safety seat. The mudguards 412 are circular arcs, and the mudguards 412 are arranged around and spaced apart from a part of the outer periphery of the wheels 411, 421. Among them, the rear wheel assemblies 410 further comprise a fender connecting piece 413, and the mudguards 412 are connected to the lower rear legs 212 through the fender connecting piece 413. In the present embodiment, the mudguards 412 and the fender connecting piece 413 are integrally formed. In other embodiments, the mudguards 412 and the fender connecting piece 413 can be separate components. In addition, the mudguards 412 in the front wheel assemblies 420 can be directly connected to the lower front legs 222. When the frame 200 is in the collapsed state, the mudguards 412 are located below the wheels 411, and the lowest points of the mudguards 412 are equal to or higher than the bottom surface of the base 300. In this way, when the infant carrier used as a safety seat is installed on the vehicle seat, the wheels 411 can be separated from the surface of the seat by the mudguards 412, thereby preventing the wheels 411 from directly contacting the vehicle seat and preventing the wheels 411 from dirtying the vehicle seat.

[0438] In an embodiment, as shown in FIG. 64 , FIG. 68 and FIG. 69As shown, the seat assembly 100 comprises a seat 110, the seat 110 comprising a seat body 111 and a seat shell 112, the seat body 111 and the seat shell 112 enclosing a first accommodating cavity 113. The seat shell 112 comprises a first seat shell 1121 and a second seat shell 1122, the second seat shell 1122 being connected to the first seat shell 1121 or the seat body 111.

[0439] With reference to FIG. 64 , FIG. 68 and FIG. 69 , the seat assembly 100 further comprises a safety belt positioning device 130, the safety belt positioning device 130 having a safety belt slot 131. When the infant carrier is in the form of a safety seat, the safety belt at the vehicle seat is adapted to pass through the safety belt slot 131 to fix the infant carrier (safety seat) to the vehicle seat. Among them, the safety belt slot 131 is at least two, at least two safety belt slots 131 are respectively arranged on one side of the left and right sides and the front side of the seat 110. In this embodiment, three safety belt slots 131 are arranged, and the three safety belt slots 131 are respectively located on the left and right sides and the front side of the seat 110. The safety belt passes through the safety belt slot 131 on the left side or the right side, and passes through the safety belt slot 131 on the front side to fix the infant carrier used as a safety seat on the vehicle seat. The arrangement of the safety belt positioning device 130 facilitates and firmly fixes the infant carrier on the vehicle seat.

[0440] In an embodiment, as shown in FIG. 68 and FIG. 69 , the infant carrier further comprises a deployment locking mechanism 5A. In this embodiment, at least a part of the deployment locking mechanism 5A is accommodated in the first accommodating cavity 113, and the deployment locking mechanism 5A is two groups, and the two groups of deployment locking mechanisms 5A are arranged on the two sides of the seat assembly 100. In other embodiments, the deployment locking mechanism 5A can also be arranged on only one side of the seat assembly 100, which is not limited by the present application. For ease of description, the deployment locking mechanism 5A on one side of the seat assembly 100 will be described below.

[0441] With reference to FIG. 69 and FIG. 71The unfolding locking mechanism 5A includes a first sliding pin 5A1, a first stopper 5A2, a first connecting member 5A3, and an unfolding locking mechanism spring 5A4. One end of the first connecting member 5A3 is fixedly connected to the upper front leg 221, and the other end is accommodated in the first accommodating cavity 113 and connected with the first sliding pin 5A1. The first sliding pin 5A1 is fixedly connected to the upper front leg 221 through the first connecting member 5A3 and is slidably arranged on the seat assembly 100. Specifically, the first sliding pin 5A1 is slidably accommodated in the first accommodating cavity 113. When the first sliding pin 5A1 slides relative to the seat assembly 100, it can drive the upper front leg 221 to pivot relative to the upper rear leg 211 through the first connecting member 5A3, thereby switching the frame 200 between the unfolded state and the folded state. In the present embodiment, the connecting sheet 120 is accommodated in the first accommodating cavity 113 and connected with the seat body 111. The connecting sheet 120 is provided with a strip-shaped slot 121, and the first sliding pin 5A1 is inserted into the strip-shaped slot 121 and is slidable along the strip-shaped slot 121. In other embodiments, the strip-shaped slot 121 can also be provided on the seat body 111, and the first sliding pin 5A1 is inserted into the strip-shaped slot 121 and is slidable along the strip-shaped slot 121.

[0442] Further, the first stopper 5A2 is pivotably connected to the seat assembly 100. Specifically, the first stopper 5A2 is accommodated in the first accommodating cavity 113, and the first stopper 5A2 is pivotably connected to the seat body 111. The first stopper 5A2 has a first stopper hook portion 5A21 adapted to be engaged with the first sliding pin 5A1 to prevent the first sliding pin 5A1 from sliding relative to the seat assembly 100, so that the pivoting of the upper front leg 221 relative to the seat assembly 100 is inhibited and the frame 200 is locked in the unfolded state, i.e., the unfolding locking mechanism 5A is in the locked state. The unfolding locking mechanism spring 5A4 is accommodated in the first accommodating cavity 113 and arranged between the first stopper 5A2 and the seat body 111. The unfolding locking mechanism spring 5A4 includes a torsion spring. The unfolding locking mechanism spring 5A4 is adapted to bias the first stopper 5A2 to pivot towards the first sliding pin 5A1, so that the first stopper hook portion 5A21 is engaged with the first sliding pin 5A1, thereby locking the frame 200 in the unfolded state, avoiding the frame 200 from being accidentally folded when the infant carrier is used as a stroller. In the present embodiment, with reference to FIG. 69 and FIG. 71 The first stopper hook portion 5A21 is provided with a first wedge surface 5A22 adapted to be pushed by the first sliding pin 5A1, so that the first stopper 5A2 does not need to be operated by external force, and the first sliding pin 5A1 can enter the first stopper hook portion 5A21 and be engaged with the first stopper hook portion 5A21 by pushing the first wedge surface 5A22. With reference to FIG. 64 and FIG. 68The second seat housing 1122 is located at the deployment locking mechanism 5A to facilitate the assembly of the deployment locking mechanism 5A.

[0443] In one embodiment, such as FIG. 68 , 70 As shown in Figure 72, the infant carrier also includes an unfolding locking release mechanism 5B, which is adapted to drive the first stop 5A2 to pivot away from the first sliding pin 5A1, thereby releasing the engagement between the hook portion 5A21 of the first stop and the first sliding pin 5A1. The unfolding locking release mechanism 5B includes a first operating member 5B1 and two first traction members (not shown in the figures). The first operating member 5B1 is connected to the first stop 5A2; specifically, the first operating member 5B1 is connected to the first stop 5A2 located on both sides of the seat assembly 100 via two first traction members (not shown in the figures). The first operating member 5B1 is operably disposed in the seat assembly 100, and when operated, the first operating member 5B1 is adapted to drive the first stop 5A2 to pivot away from the first sliding pin 5A1, thereby releasing the engagement between the hook portion 5A21 of the first stop and the first sliding pin 5A1, thus allowing the frame 200 to switch from an unfolded state to a folded state. (Refer to Figure 72) FIG. 72 A first recess 1123 is provided on the first seat housing 1121. The first recess 1123 is located on the front or rear side of the seat body 111. In this embodiment, the first recess 1123 is located on the front side of the seat body 111. A first opening (not shown in the figure) is provided at the first recess 1123, and the first opening (not shown in the figure) penetrates through the first seat housing 1121. The first operating member 5B1 includes a first connecting part (not shown in the figure) and a first operating part 5B11 connected to the first connecting part (not shown in the figure). The first connecting part (not shown in the figure) is inserted into the first receiving cavity 113 and connected to the first traction member. At least a portion of the first operating part 5B11 passes through the first opening (not shown in the figure) and is movable along the first opening (not shown in the figure). The first operating part 5B11 as a whole does not extend beyond the outer surface of the first seat housing 1121. (Refer to...) FIG. 72 The first operating member 5B1 can move back and forth in the direction shown in D1. That is, the first operating member 5B1 can move generally in the vertical direction, or the first operating member 5B1 can have at least a vertical movement component. The end of the first opening (not shown in the figure) is adapted to abut against the first operating part 5B11 to limit the travel of the first operating member 5B1.

[0444] In this embodiment, the first traction member (not shown in the drawings) is a traction rope, one end of which is connected to the first operating member 5B1, and the other end is connected to the first stop member 5A2. The traction rope can be, for example, hemp rope, nylon rope, steel wire rope, carbon fiber rope, etc. The first traction member (not shown in the drawings) is housed in the first receiving cavity 113, making the appearance of the infant carrier more concise.

[0445] In an embodiment, as shown in FIGS. 75-77 The base 300 comprises a base body 310 and a base bracket 320. The base body 310 comprises a first shell 311 and a second shell 312, which enclose a fourth receiving cavity 318. The base bracket 320 is received in the fourth receiving cavity 318 and connected with the first shell 311.

[0446] With reference to FIGS. 74-77 The infant carrier further comprises a folding locking mechanism 6A adapted to lock the frame 200 in the folded state. The folding locking mechanism 6A comprises a fixing rod 6A1, a locking piece 6A2, a folding locking mechanism spring 6A3 and a fixing piece 6A4. The fixing rod 6A1 is connected with the seat assembly 100, in particular, the fixing rod 6A1 is connected to the seat shell 112. The seat shell 112 has a second recess 1125, and the fixing rod 6A1 is arranged at the second recess 1125.

[0447] As shown in FIGS. 75-77 The locking piece 6A2 is pivotally connected to the base 300, and the locking piece 6A2 has a locking piece hook portion 6A23. The locking piece hook portion 6A23 is adapted to be engaged with the fixing rod 6A1 (see FIG. 74) to lock the frame 200 in the collapsed state. The locking member 6A2 includes a fourth locking member 6A2a and a fifth locking member 6A2b, and a second connecting member 6A21 located between the fourth locking member 6A2a and the fifth locking member 6A2b, both ends of the second connecting member 6A21 being connected to the fourth locking member 6A2a and the fifth locking member 6A2b respectively. The second connecting member 6A21 is in the form of a plate to increase the installation area. The fourth locking member 6A2a and the fifth locking member 6A2b are identical in structure. The fourth locking member 6A2a will be described by way of example. The fourth locking member 6A2a includes a locking member connecting portion 6A22 and a locking member hook portion 6A23, the locking member connecting portion 6A22 being connected to the locking member hook portion 6A23, and the second connecting member 6A21 being connected to the locking member connecting portion 6A22. The second housing 312 is provided with a second opening 313, the second opening 313 being provided through the second housing 312. In the present embodiment, the second opening 313 is in the form of a strip, and there are two second openings 313, the two second openings 313 being for the fourth locking member 6A2a and the fifth locking member 6A2b to pass through respectively. The end of each second opening 313 is adapted to abut against the locking member 6A2 to limit the stroke of the locking member 6A2. The base body 310 is provided with a locking member pivot shaft 340, specifically, the locking member pivot shaft 340 is fixedly connected to the first housing 311 and accommodated in the fourth accommodating cavity 318. In the present embodiment, the locking member pivot shaft 340 is not coaxially provided with the first connecting rod 213. In other embodiments, the locking member pivot shaft 340 can be coaxially provided with the first connecting rod 213. The locking member connecting portion 6A22 is pivotably connected to the locking member pivot shaft 340 and accommodated in the fourth accommodating cavity 318. The locking member hook portion 6A23 passes through the second opening 313 and extends out of the fourth accommodating cavity 318.

[0448] With reference to FIG. 75 and FIG. 77 , the locking member hook portion 6A23 is provided with a second wedge surface 6A24, the second wedge surface 6A24 being adapted to be pushed by the fixed rod 6A1 (see FIG. 74 ). Thus, when the frame 200 is collapsed to the locking member 6A2 being in contact with the fixed rod 6A1, the fixed rod 6A1 can push the second wedge surface 6A24 and enter the locking member hook portion 6A23 and be engaged with the locking member hook portion 6A23 without the need for external force to operate the locking member 6A2.

[0449] As FIG. 77 and FIG. 78As shown, the fixing member 6A4 is fixedly connected to the locking member pivot shaft 340. The folding locking mechanism spring 6A3 is arranged between the fixing member 6A4 and the locking member 6A2, and is adapted to bias the locking member 6A2 to pivot towards the fixed rod 6A1 so that the locking member hook 6A23 is engaged with the fixed rod 6A1. In the present embodiment, the folding locking mechanism spring 6A3 is based on a double torsion spring structure. The folding locking mechanism spring 6A3 comprises two spring portions 6A31 and a U-shaped connecting portion 6A32 connecting the two spring portions 6A31. The fixing member 6A4 has two spring mounting portions 6A41. The two spring portions 6A31 are respectively fixedly arranged in the spring mounting portions 6A41, and the U-shaped connecting portion 6A32 abuts against the fourth locking member 6A2a and the fifth locking member 6A2b respectively. In this way, the folding locking mechanism spring 6A3 can be conveniently disassembled. In other embodiments not shown, the folding locking mechanism spring 6A3 can also have other structures as long as it can bias the locking member 6A2 to pivot towards the fixed rod 6A1 so that the locking member hook 6A23 is engaged with the fixed rod 6A1, for example, the folding locking mechanism spring 6A3 is a single torsion spring arranged on the fixing member 6A4 or the locking member pivot shaft 340 and abuts against the locking member 6A2.

[0450] In an embodiment, as shown in FIG. 75 and FIG. 77 , the infant carrier further comprises a folding locking release mechanism 6B adapted to drive the locking member 6A2 to pivot in a direction away from the fixed rod 6A1 to disengage the locking member hook 6A23 from the fixed rod 6A1 (see FIG. 74 ). The folding locking release mechanism 6B comprises a second operating member 6B1 connected to the locking member 6A2, and adapted to drive the locking member 6A2 to pivot in a direction away from the fixed rod 6A1 to disengage the locking member hook 6A23 from the fixed rod 6A1 when operated. The second operating member 6B1 is operably arranged in the base 300. In the present embodiment, the second housing 312 has a third recess 314 provided with a third opening 315 passing through the second housing 312. One end of the second operating member 6B1 is accommodated in the fourth accommodation cavity 318 and connected to the second connecting member 6A21, and the other end extends out of the fourth accommodation cavity 318 through the third opening 315 to facilitate operation of the second operating member 6B1.

[0451] The principle of switching the infant carrier from the stroller to the safety seat (i.e. switching the frame 200 of the infant carrier from the unfolded state to the folded state) in the present embodiment is as follows:

[0452] As shown in FIG. 71 and FIG. 72As shown, an external force presses the first operating member 5B1 to move it. The first operating member 5B1 drives the first stop member 5A2 to pivot through the first traction member (not shown in the figure), causing the hook portion 5A21 of the first stop member to disengage from the first sliding pin 5A1, thereby allowing the first sliding pin 5A1 to slide within the strip groove 121, that is, the upper front support leg 221 can pivot. At this time, by pushing the front wheel assembly 420 or the rear wheel assembly 410 inward, the lower front support leg 222 or the lower rear support leg 212 is subjected to an inward folding force, causing the upper front support leg 221 to slide relative to the seat 110, and at the same time causing the upper rear support leg 211 to pivot relative to the seat 110, thereby realizing the folding of the frame 200, as shown. FIGS. 73-74 As shown. Alternatively, after the first stop hook 5A21 disengages from the first sliding pin 5A1, only the front wheel 421 or the rear wheel 411 touches the ground (it can be one or both front wheels 421 on the same side, or one or both rear wheels 411 on the same side), while applying downward pressure to the ground, so that the lower front support leg 222 or the lower rear support leg 212 is subjected to an inward folding force, causing the upper front support leg 221 to slide relative to the seat 110, and at the same time causing the upper rear support leg 211 to pivot relative to the seat 110, thereby realizing the folding of the frame 200. When the frame 200 is fully folded, as FIG. 74 and FIG. 75 As shown, the fixing rod 6A1 pushes against the second wedge-shaped surface 6A24 and causes the locking member 6A2 to pivot, thereby causing the fixing rod 6A1 to enter the locking hook 6A23 of the locking member 6A2 and engage with it, thereby locking the frame 200 in the folded state. At this time, the infant vehicle can be used as a safety seat.

[0453] The principle behind the transformation of infant and toddler vehicles from car seats to strollers (i.e., the frame 200 of the infant and toddler vehicle switching from a folded state to an unfolded state) is as follows:

[0454] like FIG. 75 and FIG. 77 As shown, an external force presses the second operating member 6B1 to move it. The second operating member 6B1 drives the locking member 6A2 to pivot, causing the locking member hook 6A23 to disengage from the fixing rod 6A1, allowing the seat assembly 100 to move relative to the base 300. That is, the frame 200 can switch from a folded state to an unfolded state. FIGS. 74-73 As shown. At this time, the seat assembly 100 is lifted, and the front support 220 or rear support 210 of the frame 200 is subjected to force (this force may include the weight of the frame 200 and the base 300, and may also include other forces acting on the frame 200), thereby switching the frame 200 from the folded state to the unfolded state. When the frame 200 is fully unfolded, as shown... FIG. 69As shown, the first sliding pin 5A1 pushes the first wedge surface 5A22 to make the first stopper 5A2 pivot, so that the first sliding pin 5A1 enters the first stopper hook 5A21 and is engaged therewith, thereby locking the frame body 200 in the unfolded state, at which time the infant carrier can be used as a stroller.

[0455] In an embodiment, as shown in FIG. 75 and FIG. 77 shown, the base 300 further comprises two slide rods 350, two ISOFIX connectors 360 located on both sides of the base support 320, and a linkage rod 370 connected with the two slide rods 350. Among them, the two ISOFIX connectors 360 are each adapted to be attached to an ISOFIX interface in a vehicle. A portion of each of the two slide rods 350 is accommodated in the fourth accommodation cavity 318, one end of each slide rod 350 is connected to one of the two ISOFIX connectors 360, and the other end is slidingly connected to the base support 320. Specifically, the base support 320 further comprises two slide sleeves 321 located on opposite sides of the base support 320, each of the two slide sleeves 321 is provided with a third through hole 3211, and one end of the corresponding slide rod 350 is slidingly connected to the base support 320 through the third through hole 3211. The base support 320 is provided with two first guide holes 322 in the form of strips, and the two ends of the linkage rod 370 pass through the first guide holes 322 and are connected with the two slide rods 350. The linkage rod 370 can move along the first guide holes 322, thereby achieving linkage of the two slide rods 350.

[0456] As shown in FIG. 77 , FIGS. 79-81 shown, the infant carrier further comprises an adjustment device 700 adapted to releasably lock the slide rods 350 to the base support 320. Among them, the adjustment device 700 can be releasably connected with only one of the slide rods 350, or with both of the slide rods 350. In the present embodiment, the adjustment device 700 is releasably connected with both of the slide rods 350. By slidingly connecting the ISOFIX connectors 360 to the base body 310 through the two slide rods 350, and releasably locking the slide rods 350 at the desired position through the adjustment device 700, the relative position between the ISOFIX connectors 360 and the base body 310 can be adjusted very conveniently. Thus, when the infant carrier is used as a safety seat, the ISOFIX connectors 360 can be conveniently moved and fixed at the desired position, so as to facilitate the docking of the ISOFIX connectors 360 with the ISOFIX interface, and the distance between the base 300 and the ISOFIX interface can be adjusted as needed. When the infant carrier is used as a stroller, the ISOFIX connectors 360 can be retracted to avoid the ISOFIX connectors 360 from colliding with or blocking the stroller operator due to excessive protrusion from the frame body 200.

[0457] Further, as shown in FIG. 77 , FIGS. 79-81 , the adjusting device 700 comprises a second stopper 710, a third operating member 720, a fixing base 730 and an adjusting device elastic member 740. In the present embodiment, two second stoppers 710 are provided, and each of the two second stoppers 710 is movably connected to the third operating member 720. Moreover, the two second stoppers 710 are movably arranged on the base 300 and are adapted to releasably lock the two slide rods 350 to the base support 320. Each of the two slide rods 350 is provided with a plurality of adjusting holes 351. The base support 320 is provided with two stopper holes 316 at positions corresponding to the two second stoppers 710, respectively, for the two second stoppers 710 to pass through, respectively. The two second stoppers 710 are rod-shaped, and each of the two second stoppers 710 has one end accommodated in the fourth accommodating cavity 318 and connected to the third operating member 720, and the other end adapted to pass through the corresponding stopper hole 316 and inserted into one of the adjusting holes 351 in the corresponding slide rod 350, so as to releasably lock the corresponding slide rod 350 to the base support 320.

[0458] As shown in FIGS. 79-81 , the third operating member 720 is movably arranged on the base 300 and connected to the two second stoppers 710. The third operating member 720 is adapted to drive the two second stoppers 710 to move synchronously so as to lock or release the two slide rods 350 to or from the base support 320. A part of the third operating member 720 is accommodated in the fourth accommodating cavity 318 and provided with two first driving grooves 721, and the other end of each of the second stoppers 710 is provided with a first driving pin 750 which is inserted into and movable along the corresponding first driving groove 721. The first driving groove 721 has a first position and a second position, when the first driving pin 750 is in the first position in the first driving groove 721, the two slide rods 350 are locked to the base support 320, and when the first driving pin 750 is in the second position in the first driving groove 721, the two slide rods 350 are released from the base support 320. The moving direction D2 of the third operating member 720 and the moving direction of the second stopper 710 form an angle, and in the present embodiment, the moving direction D2 of the third operating member 720 and the moving direction D3 of the second stopper 710 form an angle of about 90°. The extending direction of the first driving groove 721 is staggered with the moving direction D3 of the second stopper 710 and is not perpendicular to the moving direction D3 of the second stopper 710. For more details, please refer to FIG. 78 and FIG. 79The third operating member 720 has an operating hook 722 outside the fourth accommodating cavity 318 to facilitate operation of the third operating member 720. The third operating member 720 also has a receiving groove 724 between the two first driving grooves 721. One end of the receiving groove 724 is provided with a first protrusion 725. The base 300 is correspondingly provided with a second protrusion 317 accommodated in the fourth accommodating cavity 318 and arranged on the first shell 311. The second protrusion 317 is arranged opposite to the first protrusion 725.

[0459] As shown in FIGS. 78-81 , the adjusting device elastic member 740 includes a spring, and two ends of the adjusting device elastic member 740 are connected to the first protrusion 725 and the second protrusion 317 respectively. The adjusting device elastic member 740 is adapted to bias the third operating member 720 so that the third operating member 720 is in the initial position when not operated.

[0460] As shown in FIG. 77 and FIG. 78 , the fixing seat 730 is connected to the base 300, and the fixing seat 730 is provided with a third guide groove 731 configured to guide the movement of the second stopper 710. The first driving pin 750 is inserted into the third guide groove 731 and is movable along the third guide groove 731. The third guide groove 731 can guide the movement of the second stopper 710 in a predetermined direction, and can also reduce the deviation amplitude of the third operating member 720 in the left-right direction during movement. The end of the third guide groove 731 is adapted to abut against the first driving pin 750 to limit the movement stroke of the second stopper 710. The two ends of the fixing seat 730 are respectively connected to the base bracket 320, and the third operating member 720 is located between the fixing seat 730 and the first shell 311, which can reduce the deviation amplitude of the third operating member 720 in the up-down direction during movement.

[0461] In the present embodiment, the position adjustment process of the ISOFIX connector 360 is as follows:

[0462] As shown in FIG. 78 and FIG. 79As shown, the third operating member 720 is pulled by an external force, the two first driving grooves 721 of the third operating member 720 drive the first driving pin 750 to move along the third guiding groove 731, so that the first driving pin 750 is moved from the first position to the second position of the first driving groove 721, and the two second stop members 710 are simultaneously moved towards each other, so that the two second stop members 710 are disengaged from the engagement with the adjusting hole 351, that is, the slide rod 350 can move relative to the base body 310. At this time, the position of the ISOFIX connector 360 can be adjusted by moving the slide rod 350. When the position of the ISOFIX connector 360 is adjusted to the desired position, the external force applied to the third operating member 720 is removed, the adjusting device elastic member 740 biases the first protrusion 725, so that the third operating member 720 returns to the initial position, and the first driving pin 750 is driven to move from the second position to the first position of the first driving groove 721, so that the second stop member 710 is engaged with the adjusting hole 351 to lock the slide rod 350 to the base bracket 320.

[0463] In an embodiment, as shown in FIGS. 82-85 The infant carrier further comprises a brake mechanism 800, which is switchable between a locked state and an unlocked state. When the brake mechanism 800 is in the locked state, at least one predetermined wheel 810 of the plurality of wheels cannot rotate, and when the brake mechanism 800 is in the unlocked state, the plurality of wheels 411, 421, including the predetermined wheel 810, can rotate. The predetermined wheel 810 includes a first rear wheel 411a arranged on the first lower rear leg 212a and a second rear wheel 411b arranged on the second lower rear leg 212b. The predetermined wheel 810 is provided with a plurality of second brake holes 813 circumferentially along the hub 811 thereof. Specifically, the hub 811 of the predetermined wheel 810 is provided with a plurality of protruding columns 812, and each protruding column 812 is provided with a second brake hole 813 at an end facing the frame body 200.

[0464] As shown in FIGS. 83-85As shown, the braking mechanism 800 includes a locking pin 820, a pedal component 830, a third driving component 840, a second traction component (not shown in the figure), a first braking mechanism elastic component 851, and a second braking mechanism elastic component 853. At least two locking pins 820, third driving components 840, first braking mechanism elastic components 851, second braking mechanism elastic components 853, and second traction components are included, while one pedal component 830 is included. At least two locking pins 820 are respectively configured to correspond one-to-one with at least two third driving components 840, and at least two third driving components 840 are respectively connected to the same pedal component 830 via the second traction component (not shown in the figure), so that multiple locking pins 820 can be driven in conjunction by one pedal component 830. In other embodiments, the number of pedal components 830 may also correspond to the number of locking pins 820, so that different pedal components 830 can drive the corresponding locking pins 820 to operate.

[0465] The locking pin 820 includes two pins, which are movably disposed on the frame 200. Specifically, the two locking pins 820 are movably disposed on the first lower rear support leg 212a and the second lower rear support leg 212b, respectively. The following description takes the locking pin 820 disposed on the second lower rear support leg 212b as an example.

[0466] like FIGS. 83-85As shown, the locking pin 820 is movable between a release position and a locking position. The locking pin 820 has a second connecting end 821 and a locking end 822. The second lower rear leg 212b includes a first leg housing 2121 and a second leg housing 2122, and the first leg housing 2121 and the second leg housing 2122 enclose a third receiving cavity 2123. Specifically, for the convenience of disassembly, the second leg housing 2122 is detachably connected to the first leg housing 2121. The second connecting end 821 is received in the third receiving cavity 2123 and is movable in the third receiving cavity 2123. When the locking pin 820 is in the locking position, the locking end 822 extends out of the frame 200 and is engaged with one of the plurality of second brake holes 813. When the locking pin 820 is in the release position, the locking end 822 is located in the frame 200 and is disengaged from one of the plurality of second brake holes 813. The second lower rear leg 212b is provided with a guide portion 2124 received in the third receiving cavity 2123 and disposed on the first leg housing 2121, and a second guide hole 2125 disposed in the guide portion 2124 and extending through the guide portion 2124 and the first leg housing 2121, and communicating with the third receiving cavity 2123. The locking pin 820 is inserted in the second guide hole 2125 and is movable along the second guide hole 2125, and the second guide hole 2125 is adapted to guide the locking pin 820 to move in a predetermined direction, such as the direction D5. The second connecting end 821 of the locking pin 820 extends out of the second guide hole 2125 to be drivingly connected with the third driving member 840.

[0467] As shown in FIG. 83 , FIG. 84 and FIG. 86 , the third driving member 840 is movably disposed in the frame 200, and specifically, the third driving member 840 is received in the third receiving cavity 2123. The third driving member 840 is movably connected with the locking pin 820 to drive the locking pin 820 to move. Referring to FIG. 84 and FIG. 85The moving direction D4 of the third driving member 840 is staggered with the moving direction D5 of the locking pin 820. The pedal member 830 is connected with the third driving member 840 to drive the third driving member 840 to move. The third driving member 840 has a driving surface 841. The second connecting end 821 of the locking pin 820 is provided with a second driving pin 852. The second driving pin 852 is in abutment with the driving surface 841. The driving surface 841 is configured to drive the second driving pin 852 to move when the third driving member 840 moves, so as to drive the locking pin 820 to move. The driving surface 841 can be a slope or an arc surface. The third driving member 840 comprises two first side plates 842 oppositely arranged and a first connecting plate 843 connected between the two first side plates 842. The two first side plates 842 are both provided with the driving surface 841. The guiding portion 2124 is located between the two first side plates 842. The guiding portion 2124 is formed as a first movement limiting portion 2126a. When the third driving member 840 moves upward along the direction D4, the first movement limiting portion 2126a is adapted to abut against the inner side of the first connecting plate 843, so as to limit the moving stroke of the third driving member 840, thereby avoiding the third driving member 840 from moving excessively and causing the second driving pin 852 to slide off the driving surface 841. The bottom wall of the third accommodating cavity 2123 is formed as a second movement limiting portion 2126b. When the third driving member 840 moves downward along the direction D4, the second movement limiting portion 2126b is adapted to abut against the outer side of the first connecting plate 843, so as to limit the moving stroke of the third driving member 840.

[0468] In the embodiment, the first brake mechanism elastic member 851 is arranged between the third driving member 840 and the frame body 200. The first brake mechanism elastic member 851 is adapted to bias the third driving member 840, so that the locking pin 820 can move to the locking position. The first brake mechanism elastic member 851 comprises a spring. One end of the first brake mechanism elastic member 851 is in abutment with the third driving member 840, and the other end of the first brake mechanism elastic member 851 is in abutment with the abutting portion 2127 protruding from the side wall of the third accommodating cavity 2123.

[0469] The second brake mechanism elastic member 853 is arranged between the frame body 200 and the locking pin 820. The second brake mechanism elastic member 853 is adapted to bias the locking pin 820 to move to the locking position. The second brake mechanism elastic member 853 comprises a spring. The second brake mechanism elastic member 853 is accommodated in the second guiding hole 2125. The locking pin 820 has a protruding portion 823. The second brake mechanism elastic member 853 is sleeved on the locking pin 820, and one end of the second brake mechanism elastic member 853 is in abutment with the bottom wall of the second guiding hole 2125, and the other end of the second brake mechanism elastic member 853 is in abutment with the protruding portion 823 (see FIG. 84 ).

[0470] As FIG. 82 and FIG. 83As shown, the pedal component 830 is pivotally mounted on the base 300, and the pedal component 830 is pivotable between a traveling position and a stopping position. When the pedal component 830 pivots from the traveling position to the stopping position, the pedal component 830 is adapted to drive the locking pin 820 from the unlocked position to the locked position, and when the pedal component 830 pivots from the stopping position to the traveling position, the pedal component 830 is adapted to drive the locking pin 820 from the locked position to the unlocked position.

[0471] Furthermore, such as FIGS. 86-87 As shown, a brake connection portion 330 is provided on the base 300, and this brake connection portion 330 is disposed on the second housing 312. A pedal component 830 is pivotally connected to the brake connection portion 330. The pedal component 830 includes a foot pedal portion 831 and two ear plate portions 832 respectively connected to the foot pedal portion 831. The upper surface of the foot pedal portion 831 is provided with anti-slip texture 836, which includes multiple parallel horizontal lines to increase the friction when the foot pedal portion 831 is operated. (Refer to...) FIG. 87 Two ear plate portions 832 are disposed opposite to each other. Each ear plate portion 832 is provided with at least two interconnected engaging recesses 833a and 833b. A brake connecting portion 330 is located between the two ear plate portions 832 and is pivotally connected to them. The brake connecting portion 330 is provided with an engaging protrusion 331, which is disposed on both sides of the brake connecting portion 330 facing the two ear plate portions 832. The engaging protrusion 331 can engage with any of the engaging recesses 833a and 833b. A spring piece 835 is provided between two adjacent engaging recesses 833a and 833b, capable of locking the engaging protrusion 331 within either engaging recess 833a or 833b, thereby locking the pedal member 830 in a moving or stopped position. The pedal member 830 can be operated to overcome the spring force of the spring piece 835, causing the engaging protrusion 331 to engage with different engaging recesses 833a and 833b. In this embodiment, at least two engaging recesses 833a and 833b include a first engaging recess 833a and a second engaging recess 833b. The second engaging recess 833b is located above the first engaging recess 833a, meaning it is closer to the foot pedal portion 831 than the first engaging recess 833a. When the engaging protrusion 331 engages with the first engaging recess 833a, the pedal component 830 is in the moving position; when the engaging protrusion 331 engages with the second engaging recess 833b, the pedal component 830 is in the stopped position.

[0472] In other embodiments not shown, the elastic piece 835 and the two engaging recesses 833a, 833b can also be arranged at the brake connecting part 330, and the engaging protrusions 331 are correspondingly arranged at the ear plate parts 832. Specifically, the brake connecting part 330 is located between the two ear plate parts 832 and pivotally connected with the two ear plate parts 832. The two sides of the brake connecting part 330 facing the two ear plate parts 832 are respectively provided with at least two engaging recesses 833a, 833b which are in communication with each other. The side of each ear plate part 832 facing the brake connecting part 330 is correspondingly provided with an engaging protrusion 331, so that the engaging protrusion 331 can engage with any one of the engaging recesses 833a, 833b. The elastic piece 835 is arranged between the two adjacent engaging recesses 833a, 833b, and can lock the engaging protrusion 331 in any one of the engaging recesses 833a, 833b, so as to lock the pedal member 830 in the running position or the stopping position. The pedal member 830 can be operated to make the engaging protrusion 331 overcome the elastic force of the elastic piece 835, so that the engaging protrusion 331 engages with a different engaging recess 833a, 833b. Among them, the at least two engaging recesses 833a, 833b include a first engaging recess 833a and a second engaging recess 833b. The second engaging recess 833b is located above the first engaging recess 833a, that is, the second engaging recess 833b is closer to the foot plate part 831 relative to the first engaging recess 833a. When the engaging protrusion 331 engages with the second engaging recess 833b, the pedal member 830 is in the running position; when the engaging protrusion 331 engages with the first engaging recess 833a, the pedal member 830 is in the stopping position.

[0473] Further, the second traction member (not shown in the drawings) includes a traction rope. One end of the second traction member (not shown in the drawings) is connected with the pedal member 830, and the other end of the second traction member (not shown in the drawings) is connected with the third driving member 840. Specifically, referring to FIG. 88 , the pedal member 830 also has a traction connecting part 834, which includes two and is arranged on the lower surface of the foot plate part 831. The two second traction members (not shown in the drawings) are respectively connected to the two traction connecting parts 834, so that two locking pins 820 can be driven in linkage through one pedal member 830.

[0474] The operation principle of the brake mechanism 800 in this embodiment will be specifically explained below:

[0475] In the case that the infant carrier serving as a stroller is in the braking state, when it is needed to run, as FIG. 87As shown, the pedal member 830 is pressed downward and rotated, under the action of external force, the engaging convex 331 overcomes the elastic force of the elastic sheet 835 and is switched from the second engaging recess 833b to the first engaging recess 833a, the pedal member 830 is switched from the stop position and locked in the travel position. At this time, the pedal member 830 tightens two second traction members (not shown in the figure), thereby driving two third driving members 840 respectively located in the first lower rear leg 212a and the second lower rear leg 212b to move upward along the D4 direction simultaneously, as shown in FIGS. 83-85 Then the two third driving members 840 drive the second driving pin 852 to move along the driving surface 841 through the driving surface 841, thereby driving the locking ends 822 of the two locking pins 820 to exit the second brake holes 813 on the two predetermined wheels 810 respectively and lock the two locking pins 820 in the release position, so that the plurality of wheels 411, 412 including the two predetermined wheels 810 can rotate relative to the first lower rear leg 212a and the second lower rear leg 212b, and further enable the infant carrier to travel.

[0476] In the case where the infant carrier serving as a stroller is in the travel state, when braking is needed, as shown in FIG. 87 The pedal member 830 is pushed upward and rotated, under the action of external force, the engaging convex 331 overcomes the elastic force of the elastic sheet 835 and is switched from the first engaging recess 833a to the second engaging recess 833b, the pedal member 830 is switched from the travel position to the stop position. At this time, the pedal member 830 no longer tightens the two second traction members (not shown in the figure), at least one third driving member 840 moves downward along the D4 direction under the action of the elastic recovery force of at least one first brake mechanism elastic member 851, as shown in FIGS. 83-85 At this time, the driving surface 841 eliminates the pushing force on the second driving pin 852, the two locking pins 820 move along the D5 direction to the locking position under the action of the elastic recovery force of the second brake mechanism elastic member 853, so that the locking ends 822 of the two locking pins 820 engage with one of the second brake holes 813 on the two predetermined wheels 810 respectively, and the two locking pins 820 are locked in the locking position. Thus, the two predetermined wheels 810 cannot rotate relative to the first lower rear leg 212a and the second lower rear leg 212b, and further achieve braking.

[0477] In an embodiment, in combination with reference to FIG. 64 , FIGS. 89-90The infant carrier further comprises a moving assembly 900. The moving assembly 900 comprises two connecting arms 910, a U-shaped handle body 920, a length adjustment mechanism 960, two pivot seats 940 and two pivot adjustment assemblies 950. The two pivot seats 940 are pivotably connected to the two sides of the seat 110 respectively, and the two pivot adjustment assemblies 950 are adapted to releasably lock the pivot seats 940 at a certain angle. The pivot seat 940 comprises a disc-shaped portion 941 and a pivot connecting portion 942 connected to the outer periphery of the disc-shaped portion 941. The pivot connecting portion 942 is connected to the connecting arm 910. The disc-shaped portion 941 forms a second accommodating cavity 943 facing one side (i.e. the inner side) of the seat 110. The pivot adjustment assembly 950 comprises a pivot operating member 952 and a pivot fixing member 951. The pivot operating member 952 is operably arranged on the sidewall of the second accommodating cavity 943 and partially accommodated in the second accommodating cavity 943. Specifically, the inner side of the pivot seat 940 is provided with a third guide slot 944, one end of which penetrates through the sidewall of the second accommodating cavity 943, and the pivot operating member 952 is inserted into and movable along the third guide slot 944. The pivot operating member 952 has an operating limiting portion 9522 and a pivot clamping protrusion 9521. The operating limiting portion 9522 is spaced from the sidewall of the second accommodating cavity 943 (i.e. the other end of the third guide slot 944), so that the pivot operating member 952 has a certain movement stroke along the third guide slot 944. The outer side of the operating limiting portion 9522 is arc-shaped to better fit the sidewall of the second accommodating cavity 943. The seat 110 is correspondingly provided with a plurality of pivot clamping concaves (not shown in the drawings) capable of clamping the pivot clamping protrusion 9521. The pivot clamping protrusion 9521 is releasably clamped in one of the pivot clamping concaves to lock the pivot seat 940 at a desired angle. A resilient restoring member (not shown in the drawings) is arranged between the pivot operating member 952 and the pivot seat 940. The resilient restoring member comprises a spring. The resilient restoring member is adapted to bias the pivot operating member 952 so that the pivot clamping protrusion 9521 is clamped with at least one of the plurality of pivot clamping concaves, so that the pivot seat 940 is releasably locked at the desired angle. The pivot fixing member 951 is arranged on the side (i.e. the outer side) of the disc-shaped portion 941 away from the accommodating cavity 943.

[0478] When it is necessary to adjust the angle of the pivot seat 940, the pivot operating member 952 is operated to disengage the pivot clamping protrusion 9521 from the pivot clamping concave, and then the pivot seat 940 is pivoted to the desired angle and the pivot operating member 952 is released. At this time, the pivot seat 940 moves under the restoring force of the resilient restoring member, so that the pivot clamping protrusion 9521 is re-clamped with one of the plurality of pivot clamping concaves, thereby achieving the angle adjustment of the pivot seat 940 and the angle adjustment between the moving assembly 900 and the seat 110 to meet the use needs of different scenarios.

[0479] In an embodiment, as FIG. 90 ,FIG. 92 and FIG. 93 As shown in

[0480] Referring to FIG. 89 , FIG. 90 and FIG. 92 , each of the connecting arms 910 is provided with a first hollow cavity 911 for receiving the adjustment portion 921, the first hollow cavity 911 being disposed through both ends of the connecting arm 910. Each of the two connecting arms 910 is provided with a plurality of positioning holes 912, the positioning holes 912 being disposed through the sidewall of the first hollow cavity 911, the positioning holes 912 including, for example, 2, 3, 4, 6, 9, etc. The moving assembly 900 further includes a handle fixing seat 931, the handle fixing seat 931 being fixedly connected to the end of the connecting arm 910, and at least a portion of the handle fixing seat 931 being inserted into the first hollow cavity 911, the adjustment portion 921 being slidably connected to the connecting arm 910 through the handle fixing seat 931.

[0481] The two adjustment portions 921 are respectively inserted into and slidably disposed within the two connecting arms 910, the two adjustment portions 921 being received within the first hollow cavities 911. The adjustment portion 921 is provided with a second hollow cavity 925. The adjustment portion 921 is provided with a limiting piece 932, the limiting piece 932 being configured to prevent the handle body 920 from being completely removed from the connecting arm 910. The limiting piece 932 is inserted on the sidewall of the second hollow cavity 925. The limiting piece 932 is received within the first hollow cavity 911, and a portion of the limiting piece 932 is located between the adjustment portion 921 and the connecting arm 910. The limiting piece 932 is adapted to abut against the handle fixing seat 931 to prevent the handle body 920 from being completely slid out of the connecting arm 910.

[0482] In an embodiment, as shown in FIG. 89 and FIG. 90 , the length adjustment mechanism 960 includes two, the two length adjustment mechanisms 960 being respectively located on both sides of the seat 110. When it is necessary to adjust the moving assembly 900, the two length adjustment mechanisms 960 of the seat 110 can be adjusted simultaneously. For ease of description, one of the length adjustment mechanisms 960 will be taken as an example for description below.

[0483] Further, referring to FIGS. 91-93The length adjustment mechanism 960 comprises a positioning member 961, a pull handle 962, a pull rod 963, a length adjustment mechanism elastic member 9641, and a guide seat 965. The positioning member 961 is connected with the pull handle 962 through the pull rod 963. The positioning member 961 is movably arranged in the adjustment portion 921 of the corresponding side and is switchable between an extended position and a retracted position. When the positioning member 961 is in the extended position, the positioning member 961 is engaged with one or more of the plurality of positioning holes 912. When the positioning member 961 is in the retracted position, the positioning member 961 is disengaged from the one or more positioning holes 912, i.e. the positioning member 961 is withdrawn from the one or more positioning holes 912, so that the adjustment portion 921 can slide relative to the connecting arm 910 of the corresponding side. In this embodiment, the positioning member 961 comprises a movable connecting portion 9611 and a positioning portion 9612. The movable connecting portion 9611 is accommodated in the second hollow cavity 925 and is drivingly connected with the pull rod 963. The adjustment portion 921 has a first through hole 923 provided through the side wall of the second hollow cavity 925, and the positioning portion 9612 is adapted to pass through the first through hole 923 and be engaged with one of the plurality of positioning holes 912.

[0484] As FIG. 91 and FIG. 93As shown, the pull rod 963 comprises a driving connecting portion 9631, an operating connecting portion 9632, and a connecting rod portion 9633 connected between the driving connecting portion 9631 and the operating connecting portion 9632. In the embodiment, the driving connecting portion 9631 is accommodated in the second hollow cavity 925 and movably connected with the positioning member 961. Specifically, the driving connecting portion 9631 is in a U shape, and comprises two oppositely arranged second side plates 9635 and a second connecting plate 9636 connected between the two second side plates 9635, one end of the connecting rod portion 9633 is connected with the second connecting plate 9636, and the other end is connected to the operating connecting portion 9632. The driving connecting portion 9631 is provided with a second driving slot 9634, and specifically, the two second side plates 9635 are respectively provided with the second driving slot 9634. The movable connecting portion 9611 of the positioning member 961 is provided with a third driving pin 9642, which is insertedly fitted with the two second driving slots 9634 and is movable along the second driving slots 9634. The extending direction of the second driving slot 9634 is staggered with and not perpendicular to the moving direction of the positioning member 961, and the extending direction of the second driving slot 9634 is staggered with and not perpendicular to the moving direction of the pull rod 963. In other embodiments, the movable connecting portion 9611 of the positioning member 961 can be provided with the second driving slot 9634, and the driving connecting portion 9631 can be provided with the third driving pin 9642, which is insertedly fitted with the second driving slot 9634 and is movable along the second driving slot 9634. The extending direction of the second driving slot 9634 is staggered with and not perpendicular to the moving direction of the positioning member 961, and the extending direction of the second driving slot 9634 is staggered with and not perpendicular to the moving direction of the pull rod 963.

[0485] Referring to FIG. 90 and FIG. 92 , the adjusting portion 921 is provided with a third strip-shaped hole 924, which is arranged through the side wall of the second hollow cavity 925. A part of the operating connecting portion 9632 passes through the third strip-shaped hole 924 and extends out of the second hollow cavity 925 to be connected with the pull handle 962. The pull handle 962 is arranged around at least part of the outer periphery of the adjusting portion 921 and is movable along the adjusting portion 921. The pull handle 962 is connected with the operating connecting portion 9632 to drive the pull rod 963 to move. Specifically, the pull handle 962 is a hollow sleeve, which is sleeved around the outer periphery of the adjusting portion 921 and abuts against the operating connecting portion 9632. Wherein, the operating connecting portion 9632 is movable in the third strip-shaped hole 924, and the end of the third strip-shaped hole 924 is adapted to abut against the operating connecting portion 9632 to limit the moving stroke of the pull rod 963, thereby limiting the moving stroke of the pull handle 962.

[0486] As FIG. 92 and FIG. 93As shown, the guide seat 965 is arranged at the end of the handle body 920 and is inserted into the second hollow cavity 925. The guide seat 965 is provided with a fixing hole 9654. The guide seat 965 is fixed in the second hollow cavity 925 by a bolt connecting member inserted into the fixing hole 9654. The guide seat 965 is provided with a third sliding groove 9651 and a fourth slot 9653. The third sliding groove 9651 is arranged transversely through the guide seat 965. Referring to FIGS. 91-93 , the fourth slot 9653 extends in a direction parallel to the third sliding groove 9651, both in the D6 direction. The positioning member 961 is movably arranged in the third sliding groove 9651 and can move along the third sliding groove 9651. The third driving pin 9642 is connected to the positioning member 961 and is inserted into the second driving groove 9634 through the fourth slot 9653, so that the pull rod 963 can drive the positioning member 961 to move through the third driving pin 9642. Specifically, when the pull rod 963 moves in the D7 direction, the third driving pin 9642 is driven to move in the D6 direction through the insertion and cooperation of the second driving groove 9634 and the third driving pin 9642, thereby driving the positioning member 961 to move along the third sliding groove 9651 (i.e. in the D6 direction).

[0487] As shown in FIG. 91 , the length adjustment mechanism elastic member 9641 is arranged between the guide seat 965 and the pull rod 963. The length adjustment mechanism elastic member 9641 is adapted to bias the pull rod 963 so that the positioning member 961 remains in the extended position. The length adjustment mechanism elastic member 9641 can be a spring, a spring piece or the like. In this embodiment, the length adjustment mechanism elastic member 9641 is a spring. As shown in FIG. 93 , the pull rod 963 has an abutting portion 9637 arranged between and connected to the two second side plates 9635. The abutting portion 9637 is arranged opposite to the second connecting plate 9636, wherein the second connecting plate 9636 is located outside the receiving groove 9655, and the abutting portion 9637 is at least partially received in the receiving groove 9655 to connect the length adjustment mechanism elastic member 9641. The receiving groove 9655 is provided with a third protrusion 9656 arranged opposite to the abutting portion 9637. One end of the length adjustment mechanism elastic member 9641 abuts against the abutting portion 9637, and the other end abuts against the third protrusion 9656.

[0488] The length adjustment process of the moving assembly 900 in this embodiment will be described in detail below:

[0489] When it is necessary to adjust the length of the moving assembly 900, as FIG. 92As shown, pulling the handle 962 upward along the direction D7, while the handle 962 drives the pull rod 963 to move upward along the direction D7, the elastic member 9641 of the length adjustment mechanism is compressed. Please refer to the following figure 1C for the details. FIG. 90 and FIG. 91 Then the pull rod 963 drives the positioning member 961 to move rightward along the direction D6 through the cooperation of the second driving slot 9634 and the third driving pin 9642, when the positioning member 961 moves to the position where the positioning part 9612 is out of the certain positioning hole 912, the length adjustment mechanism 960 is released, the adjusting part 921 can move relative to the connecting arm 910, at this time, the overall length of the moving assembly 900 can be adjusted by moving the adjusting part 921 relative to the connecting arm 910.

[0490] When the adjusting part 921 moves to the position relative to another positioning hole 912 according to the need, the pressing force on the handle 962 can be released, the pull rod 963 moves downward along the direction D7 under the elastic force of the elastic member 9641 of the length adjustment mechanism. At the same time, the pull rod 963 drives the positioning member 961 to move leftward along the direction D6 through the cooperation of the second driving slot 9634 and the third driving pin 9642, so that the positioning part 9612 is re-inserted into another positioning hole 912, so that the adjusting part 921 and the connecting arm 910 are re-locked. At the same time, the pull rod 963 also drives the handle 962 to move downward along the direction D7 to reset.

[0491] The infant carrier of the embodiment has at least the following beneficial effects:

[0492] Through the switching of the frame body 200 between the folded state and the unfolded state, the infant carrier can be switched between the stroller and the safety seat, and the conversion structure is simple and easy to operate. During the switching process from the stroller to the safety seat, the seat 110 keeps the same angle with the base 300, so that the seat 110 can approach the base 300 stably, and the stability is good. When the frame body 200 is in the folded state, the infant carrier as a whole can be used as a safety seat without disassembling the seat assembly 100, and the operation is simple and convenient to carry.

[0493] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0494] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An infant carrier, characterized in that, The infant carrier comprises: a seat assembly; a frame body switchable between an unfolded state and a folded state, the frame body being connected with the seat assembly; and a base connected to the frame body; wherein the infant carrier is adapted to be used as a stroller when the frame body is in the unfolded state, and the infant carrier is adapted to be used as a safety seat when the frame body is in the folded state, and the base is closer to the seat assembly when the frame body is switched from the unfolded state to the folded state.

2. The infant carrier of claim 1, wherein, The frame body comprises: a rear support comprising an upper rear leg and a lower rear leg, the upper rear leg being pivotably connected with the lower rear leg, and the upper rear leg being pivotably connected with the seat assembly; a front support comprising an upper front leg and a lower front leg, the upper front leg being pivotably connected with the lower front leg, and the upper front leg being pivotably connected with the upper rear leg, wherein the rear support and the front support are respectively pivotably connected with the base.

3. The infant carrier of claim 2, wherein, The lower rear leg comprises a first lower rear leg and a second lower rear leg, and the rear support further comprises a first connecting rod, both ends of the first connecting rod being respectively connected to the first lower rear leg and the second lower rear leg, and the base being pivotably connected to the first connecting rod.

4. The infant carrier of claim 2, wherein, The lower front leg comprises a first lower front leg and a second lower front leg, and the front support further comprises a second connecting rod, both ends of the second connecting rod being respectively connected to the first lower front leg and the second lower front leg, and the base being pivotably connected to the second connecting rod.

5. The infant carrier of claim 1 or 2, wherein, Further comprising an unfolding locking mechanism, the unfolding locking mechanism comprising: a second sliding pin slidably arranged on the seat assembly and fixedly connected to the frame body; a first stopper pivotably connected to the seat assembly, the first stopper having a first stopper hook portion adapted to engage with the second sliding pin to prevent the sliding of the second sliding pin relative to the seat assembly, so that the pivoting of the frame body relative to the seat assembly is inhibited and locked in the unfolded state.

6. The infant carrier of claim 5, wherein, The infant carrier further comprises an unfolding locking release mechanism adapted to drive the first stopper to pivot in a direction away from the second sliding pin to release the engagement of the first stopper hook portion with the second sliding pin.

7. The infant carrier of claim 1, wherein, Further comprising a folding locking mechanism, the folding locking mechanism comprising: a fixed rod connected with the seat assembly; and a locking member pivotably connected to the base, the locking member being adapted to engage with the fixed rod to lock the frame body in the folded state.

8. The infant carrier of claim 1, wherein, The base comprises a base support and an ISOFIX connector connected to the base support, the ISOFIX connector being adapted to be attached to an ISOFIX interface in a vehicle.

9. The infant carrier of claim 8, wherein, The base further comprises a slide rod, one end of the slide rod being connected to the ISOFIX connector and the other end of the slide rod being slidably connected to the base support; The infant carrier further comprises an adjusting device adapted to releasably lock the slide rod to the base support.

10. The infant carrier of claim 1, wherein, Further comprising: a plurality of wheel assemblies connected to the frame; each wheel assembly includes a wheel, the lowest point of the wheel being above the floor surface of the base when the frame is in the collapsed state.

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