Infant carrier

Abstract

This disclosure relates to an infant carrier, including a seat element (100), a frame (200), and a switching mechanism (600). The frame (200) has an extended state and a retracted state, and is attached to the seat element (100). The switching mechanism (600) is disposed between the seat element (100) and the frame (200) and is capable of driving the frame (200) to switch between the extended state and the retracted state. When the frame (200) is in the extended state, the infant carrier is suitable for use as an infant stroller, and when the frame (200) is in the retracted state, the infant carrier (200) is suitable for use as a car seat, infant carrier, or rocker.

Description

Technical Field

[0001] [Related Applications]

[0002] This application claims the priority of Chinese Patent Application No. 202310076947.X, filed on January 18, 2023, with the State Intellectual Property Office of China; Chinese Patent Application No. 202310240677.1, filed on March 13, 2023, with the State Intellectual Property Office of China; and Chinese Patent Application No. 202310909956.2, filed on July 21, 2023, with the State Intellectual Property Office of China, the entire disclosure of which is incorporated herein by reference for all purposes.

[0003] This disclosure relates to the technical field of carriers for infants and young children, and in particular to an infant carrier. Prior Technology

[0004] Infants and toddlers typically need both strollers and car seats when traveling, but carrying both increases inconvenience. While some strollers on the market can be converted into car seats, they often suffer from complex structures and inconvenient operation. Summary of the Invention

[0005] A first aspect of this disclosure provides an infant carrier comprising a seat element, a frame, and a switching mechanism. The frame has an extended state and a retracted state, and is attached to the seat element. The switching mechanism is disposed between the seat element and the frame, and is capable of driving the frame to switch between the extended and retracted states. When the frame is in the extended state, the infant carrier is suitable for use as an infant stroller, and when the frame is in the retracted state, the infant carrier is suitable for use as a car seat, infant carrier, or rocker.

[0006] In the first aspect, the switching mechanism includes: a linkage element connected between the frame and the seat element; and a locking element operable to switch between a locked state and an unlocked state, wherein when the locking element is in the locked state, it can lock the frame in the unfolded state, and when the locking element is in the unlocked state, it can switch the frame from the unfolded state to the folded state through the linkage element.

[0007] In the first aspect, the frame includes a first support frame and a second support frame pivotally connected to each other, and the switching mechanism includes a linkage element, which includes a first linkage rod and a second linkage rod. The two ends of the first linkage rod are pivotally connected to the first support frame and the seat element, respectively, and the two ends of the second linkage rod are pivotally connected to the second support frame and the seat element, respectively.

[0008] In the first aspect, the switching mechanism includes a locking element, the locking element comprising: a first locking member movably connected to one of the seat element and the frame and used to lock the frame in an unfolded state; and a folding button connected to the other of the seat element and the frame and operable to drive the first locking member to release the lock on the frame.

[0009] In the first aspect, the frame includes: a first support frame including two first support rods; and a second support frame including two second support rods. The two first support rods are pivotally connected to the two second support rods respectively, each first support rod and each second support rod are pivotally connected to a first pivot point, the first pivot point being slidably connected to the seat element, and the folding button being attached to the first pivot point.

[0010] In the first aspect, the locking element further includes a fixing seat, the fixing seat being fixed to the seat element, the fixing seat having a second receiving cavity and an opening groove communicating with the second receiving cavity, the first locking member having a locking protrusion, the first locking member being at least partially movably disposed within the second receiving cavity, and the locking protrusion being able to extend out of the second receiving cavity through the opening groove to engage with the folding button to lock the frame in the unfolded state.

[0011] In the first aspect, the first locking member is pivotally connected to the fixed seat at a second pivot point, and the second pivot point is located within the second receiving cavity.

[0012] In the first aspect, the first locking member further includes an elastic arm, the locking protrusion and the elastic arm are respectively located on both sides of the second pivot point, and the elastic arm constantly causes the locking protrusion to pivot in the direction of extending out of the opening slot.

[0013] In the first aspect, the folding button includes: a connecting part, which is fixedly connected to the frame and slidably connected to the seat element; and an operating part, which can be operated to unlock the first locking member from the frame.

[0014] In the first aspect, the retractable button further includes a locking recess located between the connecting portion and the operating portion. The first locking member has a locking protrusion that can engage with the locking recess to lock the frame in an unfolded state, and the locking protrusion can disengage from the locking recess to release the frame from the unfolded state.

[0015] In the first aspect, the side of the operating part facing the first locking member is provided with a push protrusion. When the operating part is pressed, the push protrusion can push the first locking member to release the first locking member from locking the frame.

[0016] In the first aspect, the frame includes: a first support frame including two first support rods; and a second support frame including two second support rods. The two first support rods are respectively pivotally connected to the two second support rods.

[0017] In the first aspect, both the first support frame and the second support frame are made of aluminum tubing.

[0018] In the first aspect, the infant carrier further includes: wheel bodies, which are rotatably attached to the first support frame and the second support frame, respectively. Each of the first support rods and each of the second support rods is pivotally connected to a first pivot point. When the frame is in the folded state, the line connecting the center of the wheel body and the first pivot point is parallel to a horizontal reference plane, which is a fictitious horizontal cross-section of the bottom of the seat element.

[0019] In the first aspect, each of the first support rods and each of the second support rods is pivotally connected to a first pivot point, the first pivot point being slidably connected to the seat element.

[0020] In the first aspect, the sliding path of the first pivot point is inclined upward in a front-to-back direction.

[0021] In the first aspect, each of the first support rods and each of the second support rods is pivotally connected to a first pivot point. When the frame is in the unfolded state, the first pivot point is located at a first position of the seat element. When the frame is in the folded state, the first pivot point is located at a second position of the seat element.

[0022] In the first aspect, the first position is closer to a horizontal reference plane than the second position, the horizontal reference plane being a fictitious horizontal cross-section of the bottom of the seat element.

[0023] In the first aspect, the first position is closer to a vertical reference plane than the second position, the vertical reference plane being a fictitious vertical cross-section at the foremost end of the seat element.

[0024] In the first aspect, the infant carrier further includes: a wheel body, the wheel body being rotatably attached to the first support frame and the second support frame respectively; when the frame is in a folded state, the wheel body attached to the first support frame and the wheel body attached to the second support frame overlap.

[0025] In the first aspect, each of the first support rods is pivotally connected to each of the second support rods at a first pivot point. The infant carrier also includes a movable element mounted on the seat element, one end of which is pivotally connected to the seat element at a third pivot point. The third pivot point and the first pivot point are spaced apart.

[0026] In the first aspect, the seat element has a folding limiting part, and when the frame is in the folded state, the folding limiting part engages with the frame to lock the frame in the folded state.

[0027] In the first aspect, the infant carrier further includes a movable element mounted on the seat element. When the frame is in the unfolded state, the movable element can serve as a rider, and when the frame is in the folded state, the movable element can serve as a handle.

[0028] In the first aspect, the moving element is generally U-shaped and includes a moving body and moving rods connected to both ends of the moving body.

[0029] In the first aspect, the length of the movable rod is adjustable.

[0030] In the first aspect, the movable rod includes a first rod portion, a second rod portion, and a length adjustment mechanism. The first rod portion is partially inserted into the second rod portion, and the length adjustment mechanism is disposed between the first rod portion and the second rod portion. The length adjustment mechanism can adjust the length of the first rod portion inserted into the second rod portion.

[0031] In the first aspect, the length adjustment mechanism includes: a locking pin movably disposed on one of the first rod portion and the second rod portion; and a plurality of locking holes disposed on the other of the first rod portion and the second rod portion and arranged along the length direction of the other of the first rod portion and the second rod portion. The locking pin has a first locking position and a first unlocking position. When the locking pin is in the first locking position, it can be inserted into one of the plurality of locking holes, and when the locking pin is in the first unlocking position, it can be released from one of the plurality of locking holes.

[0032] In the first aspect, the length adjustment mechanism further includes an operating element disposed in the other of the first rod portion and the second rod portion, the operating element being operable to drive the locking pin to move in a direction disengaging from one of the plurality of locking holes.

[0033] In the first aspect, the operating element and at least a portion of the locking pin are both disposed in the first rod portion. The operating element includes: a pull rod; a length adjustment operating member disposed at one end of the pull rod; and a drive plug fixed to the end of the pull rod away from the length adjustment operating member, the drive plug having a drive groove. The locking pin is provided with a drive protrusion, the drive protrusion being inserted into the drive groove and movable along the drive groove. The length adjustment operating member can be operated to move along the length direction of the first rod portion, such that the drive pin moves from the first locking position to the first unlocking position under the action of the drive protrusion and the drive groove.

[0034] In the first aspect, the length adjustment mechanism further includes: a fixing plug, fixed within the first rod portion, and having a first through hole and a second through hole that are interconnected and whose extending directions are staggered. The locking pin is movably disposed in the first through hole, and the driving protrusion passes through the second through hole and is inserted into the driving groove.

[0035] In the first aspect, the fixed plug is further provided with a first sliding groove, the first sliding groove is connected to the first through hole and the second through hole and the extension directions are intersecting each other, and the portion of the driving plug with the driving inclined groove is inserted into the first sliding groove and can slide relative to the driving plug along the direction of the first rod portion.

[0036] In the first aspect, the length adjustment mechanism further includes a first reset member, which constantly causes the drive plug to move in the direction of driving the locking pin to the first locking position.

[0037] In the first aspect, the infant carrier further includes an angle adjustment mechanism disposed between the seat element and the moving element, the angle adjustment mechanism being used to adjust the tilt angle of the moving element relative to the seat element.

[0038] In the first aspect, the angle adjustment mechanism includes: a movable connecting seat fixedly connected to the movable element and having a first locking part; a seat connecting seat fixedly connected to the seat element and having a second locking part; and a third locking part movably disposed between the movable connecting seat and the seat connecting seat, having a second locking position and a second unlocking position. The movable connecting seat and the seat connecting seat are pivotally connected to each other. When the third locking part is in the second locking position, it simultaneously engages with both the first and second locking parts to fix the movable connecting seat and the seat connecting seat relatively. When the third locking part is in the second unlocking position, it can disengage from either the first or second locking part to allow the movable connecting seat to rotate relative to the seat connecting seat.

[0039] In the first aspect, the third locking part is a locking gear, and both the first locking part and the second locking part are gear grooves that can cooperate with the locking gear.

[0040] In the first aspect, the angle adjustment mechanism further includes an angle adjustment operating member, which is driven connected to the third locking part, and the angle adjustment operating member can be operated to drive the third locking part to move toward the second unlocking position.

[0041] In the first aspect, the angle adjustment mechanism further includes a second reset member, the two ends of which abut against the third locking part and the seat connecting seat, respectively. The second reset member constantly causes the angle adjustment operation member to move in the direction that drives the third locking part to move toward the second locking position.

[0042] In the first aspect, the infant carrier further includes: a wheel element, comprising a wheel mounting bracket and a wheel body, the wheel mounting bracket being connected to the frame, and the wheel body being rotatably mounted on the wheel mounting bracket; and a braking mechanism, disposed between the frame and the wheel element, having a braking state that prevents the wheel element from rotating and an unbraking state that allows the wheel element to rotate.

[0043] In the first aspect, the braking mechanism includes: a brake lever movably disposed on the frame, and having a third locking position and a third unlocking position. The wheel body is circumferentially provided with a plurality of first brake holes. When the brake lever is in the third locking position, the brake lever can be inserted into one of the plurality of first brake holes; when the brake lever is in the third unlocking position, the brake lever is disengaged from one of the plurality of first brake holes.

[0044] In the first aspect, the braking mechanism further includes: a brake operating member movably disposed on the frame; and a brake pushing member movably disposed on the frame and fixedly connected to the brake lever. The brake operating member can be operated to drive the brake pushing member to move the brake lever to the third release position.

[0045] In the first aspect, the frame includes a first connecting element connected to the wheel mounting bracket, the brake operating member is rotatably disposed on the first connecting element, and the brake pusher is movably disposed on the first connecting element.

[0046] In the first aspect, the brake operating member is provided with a first mating part, and the brake pushing member is provided with a second mating part and a third mating part. The brake operating member has a first rotational position and a second rotational position. When the brake operating member rotates to the first rotational position, the first mating part and the second mating part cooperate, and the brake pushing member moves to position the brake lever in the third locking position. When the brake operating member rotates to the second rotational position, the first mating part and the third mating part cooperate, and the brake pushing member moves to position the brake lever in the third unlocking position.

[0047] In the first aspect, the brake operating member has a push rib, and the brake push member is provided with a positioning groove and a brake groove. The bottom of the brake groove is away from the wheel body relative to the bottom of the positioning groove. The brake operating member has a first rotation position and a second rotation position. When the brake operating member rotates to the first rotation position, the push rib engages with the positioning groove, and the brake push member moves to position the brake lever in the third locking position. When the brake operating member rotates to the second rotation position, the push rib engages with the brake groove, and the brake push member moves to position the brake lever in the third unlocking position.

[0048] In the first aspect, the brake operating member has a mounting cavity, the mounting cavity is provided with the push rib, and the brake push member is movably disposed in the mounting cavity.

[0049] In the first aspect, the brake pusher is provided with a first mark and a second mark, the brake operating member is provided with a display window communicating with the mounting cavity, when the brake lever is in the third locking position, the first mark is opposite to the display window, and when the brake lever is in the third unlocking position, the second mark is opposite to the display window.

[0050] In the first aspect, the braking mechanism further includes a third reset member, which constantly moves the brake lever toward the third locked position.

[0051] In the first aspect, the first connecting element includes: a connecting sleeve fixed to the wheel mounting bracket and capable of communicating with one of the first brake holes through a communicating hole on the wheel mounting bracket; and a connecting rod partially inserted into the connecting sleeve, wherein the brake operation is rotatably disposed on the connecting rod, and the brake pusher is movably disposed on the connecting rod.

[0052] In the first aspect, the braking mechanism further includes a third reset member, which is disposed in the connecting rod and abuts against the brake pusher member, and the third reset member constantly moves the brake lever toward the third locking position.

[0053] In the first aspect, there are two wheel elements, each fixed to one end of the first connecting element. The brake operating member is rotatably disposed on the first connecting element. There are two corresponding brake push members, each movably disposed on the first connecting element. The brake operating member is provided with two push ribs. Each brake push member is provided with a positioning groove and a brake groove. The bottom of the brake groove is away from the wheel body on the corresponding side relative to the bottom of the positioning groove. There are also two corresponding brake levers. The two brake levers can be selectively inserted into the first brake holes of the two wheel elements respectively. The brake operating member has a first rotation position and a second rotation position. When the brake operating member rotates to the first rotation position, the two push ribs respectively engage with the positioning grooves of the two brake push members. The two brake push members move to the third locking position. When the brake operating member rotates to the second rotation position, the two push ribs respectively engage with the brake grooves of the two brake push members. The two brake push members move to the third unlocking position.

[0054] In the first aspect, the first connecting element includes: two connecting sleeves, respectively fixed to two wheel mounting brackets and respectively able to communicate with one of the plurality of first brake holes on the corresponding wheel body through the communicating holes on the two wheel mounting brackets; and a connecting rod, with both ends respectively inserted into the connecting sleeves, the brake operating member rotatably disposed on the connecting rod, and both brake pushing members movably disposed on the connecting rod.

[0055] In the first aspect, the braking mechanism further includes a third reset member, which is disposed in the connecting rod and its two ends respectively abut against the two brake push members.

[0056] In the first aspect, the brake operating element includes a first pedal and a second pedal that are connected to each other.

[0057] In the first aspect, the first pedal has a resilient finger, and the second pedal has a fixing hole, wherein the resilient finger can be detachably engaged with the fixing hole.

[0058] A second aspect of this disclosure provides an infant carrier comprising a support body, a movable element, a length adjustment mechanism, an angle adjustment mechanism, and at least one of a first limiting mechanism and a second limiting mechanism. The movable element is pivotally connected to the support body and is extendable. The length adjustment mechanism is disposed on the movable element and is used to adjust the extension and retraction of the movable element, allowing the movable element to switch between an extended state and a retracted state. The angle adjustment mechanism is disposed between the movable element and the support body and is used to adjust the pivoting of the movable element relative to the support body. When the movable element is in a retracted state and can rotate relative to the support body, the first limiting mechanism locks the length adjustment mechanism to limit the extension and retraction of the movable element. When the movable element rotates to a preset angle, the first limiting mechanism releases the lock on the length adjustment mechanism, allowing the movable element to switch between an extended state and a retracted state. When the moving element switches to the extended state, the second limiting mechanism locks the angle adjustment mechanism to restrict the pivoting of the moving element. When the moving element switches to the retracted state, the second limiting mechanism releases the lock on the angle adjustment mechanism, and the moving element can pivot.

[0059] In the second aspect, the first limiting mechanism includes: a second locking member disposed on the moving element; a first driving member; and a limiting release portion disposed on the supporting body. At least a portion of the first driving member is capable of driving the second locking member to move and lock onto the length adjusting mechanism, and the second locking member is capable of cooperating with the limiting release portion to release the locking of the length adjusting mechanism.

[0060] In the second aspect, when the moving element rotates relative to the bearing body, the first driving member drives the second locking member to move in the lateral direction of the bearing body and lock it to the length adjustment mechanism.

[0061] In the second aspect, the first driving member is a push rib disposed on the bearing body and protruding toward one side of the moving element.

[0062] In the second aspect, 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 element.

[0063] In the second aspect, the second locking member is a limiting post, which has a locking end and an abutting end. When the moving element rotates, the pushing rib pushes against the abutting end to drive the locking end to move toward the length adjusting mechanism to lock onto the length adjusting mechanism.

[0064] In the second aspect, the restriction release part is a release groove provided on the first drive member. When the moving element rotates to the preset angle, the abutment end is located in the release groove, the locking end disengages from the length adjustment mechanism, and the moving element can switch between a retracted state and an extended state.

[0065] In the second aspect, the first limiting mechanism further includes a first elastic element. When the moving element rotates to the preset angle, the elastic restoring force of the first elastic element drives the locking end to move and disengage from the length adjusting mechanism, so as to drive the abutting end to be accommodated in the release groove.

[0066] In the second aspect, one end of the first elastic member abuts against the limiting post, and the other end abuts against the side wall of the moving element.

[0067] In the second aspect, the abutting end is provided with a travel groove, and a limit pin is provided in the travel groove. At least one end of the limit pin is fixed to the moving element, and the travel groove and the limit pin cooperate to limit the travel of the limit post.

[0068] In the second aspect, the second limiting mechanism includes: a second driving member, which can selectively abut or separate from the length adjustment mechanism; and a fifth locking member, which has a locking end that engages with the second driving member and a stop end that prevents the angle adjustment mechanism from pivoting.

[0069] In the second aspect, the second driving member is provided with a buckle hole, and the holding end is provided with a hook, which is held in the buckle hole.

[0070] In the second aspect, the second drive member is pivoted within the moving element, and the second drive member has the holding end provided on one side of the pivot point, and a fourth reset member abutting on the other side of the pivot point.

[0071] In the second aspect, the moving element is provided with a fixed base, and the end of the fourth reset member away from the second driving member is fixed to the fixed base. The fixed base is provided with a through hole, and the stop end passes through the through hole.

[0072] In the second aspect, the angle adjustment mechanism includes a pivot button. When the first limiting mechanism locks the length adjustment mechanism, the stop end moves to the pressing path of the pivot button, blocking the pressing of the pivot button and locking the angle adjustment mechanism for the moving element.

[0073] In the second aspect, the length adjustment mechanism includes: a drive block, selectively pressed against or separated from the second drive member; and a length adjustment handle connected to the drive block. When the first limiting mechanism locks the length adjustment mechanism, the length adjustment handle causes the drive block to separate from the second drive member, and the second drive member drives the stop end to block the movement of the angle adjustment mechanism; when the first limiting mechanism releases the lock on the length adjustment mechanism, the drive block presses against the second drive member, and the second drive member drives the stop end to disengage from the angle adjustment mechanism.

[0074] In the second aspect, the length adjustment mechanism further includes: a positioning block movably disposed on the drive block, the positioning block being used to position the moving element in an extended state or a retracted state.

[0075] In the second aspect, 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 groove. When the length adjusting handle moves, the sliding pin slides in the second sliding groove, causing the positioning block to extend out of the through groove to position the moving element in an extended state and a retracted state, or causing the positioning block to retract into the through groove to disengage from the positioning of the moving element.

[0076] In the second aspect, the moving element 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, and the other of the first handle and the second handle is provided with at least two second gear holes. The positioning block can extend out of the through slot and engage 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 exit the gear hole and retract into the through slot to release the positioning of the relative position of the first handle and the second handle.

[0077] In the second aspect, the first handle is provided with an adjusting slider that is slidable along the first handle, the adjusting slider being connected to the length adjusting handle.

[0078] In the second aspect, at least a portion of the first handle is located above the second handle, the lower end of the second handle is connected to a handle joint for pivotal connection with the carrier body, the first limiting mechanism includes a second locking member, the second locking member being selectively locked to the length adjustment mechanism or released from the length adjustment mechanism, the second locking member being disposed on the handle joint.

[0079] In the second aspect, the infant carrier further includes a frame, which is pivotally connected to the carrier body. The frame can be switched between an extended state and a retracted state. When the frame is in the extended state, the infant carrier is in stroller mode. When the frame is in the retracted state, the infant carrier is in rocker mode, infant carrier mode, or car seat mode.

[0080] A third aspect of this disclosure provides an infant carrier comprising a seat element, a frame, and a base. The frame is switchable between an extended state and a folded state and is connected to the seat element. The base is connected to the frame. When the frame is in the extended state, the infant carrier is suitable for use as a stroller, and when the frame is in the folded state, the infant carrier is suitable for use as a car seat. When the frame switches from the extended state to the folded state, the base moves closer to the seat element.

[0081] In the third aspect, the frame includes: a rear support, comprising an upper rear support leg and a lower rear support leg, the upper rear support leg being pivotally connected to the lower rear support leg, and the upper rear support leg being pivotally connected to the seat element; and a front support, comprising an upper front support leg and a lower front support leg, the upper front support leg being pivotally connected to the lower front support leg, and the upper front support leg being pivotally connected to the upper rear support leg. The rear support and the front support are respectively pivotally connected to the base.

[0082] In the third aspect, the lower rear support leg includes a first lower rear support leg and a second lower rear support leg, and the rear support also includes a first connecting rod, the two ends of which are respectively connected to the first lower rear support leg and the second lower rear support leg, and the base is pivotally connected to the first connecting rod.

[0083] In the third aspect, at least a portion of the base is located between the first lower rear support leg and the second lower rear support leg, and the first connecting rod is arranged to pass through the portion of the base.

[0084] In the third aspect, the lower front support leg includes a first lower front support leg and a second lower front support leg, and the front bracket further includes a second link, the two ends of which are respectively connected to the first lower front support leg and the second lower front support leg, and the base is pivotally connected to the second link.

[0085] In the third aspect, the infant carrier further includes an unfolding locking mechanism comprising: a second sliding pin slidably disposed on the seat element and fixedly connected to the frame; and a first stop pivotally connected to the seat element, the first stop having a first stop hook adapted to engage with the second sliding pin to prevent the second sliding pin from sliding relative to the seat element, thereby suppressing the pivoting of the frame relative to the seat element and locking it in the unfolded state.

[0086] In the third aspect, the unfolding locking mechanism further includes a first connector, and the second sliding pin is connected to the frame through the first connector.

[0087] In the third aspect, the deployment locking mechanism further includes a deployment locking mechanism elastic member disposed between the first stop and the seat element, the deployment locking mechanism elastic member being adapted to bias the first stop to pivot toward the second sliding pin, such that the hook portion of the first stop engages with the second sliding pin.

[0088] In the third aspect, the seat element includes a seat having a groove, and the second sliding pin is inserted into and slidable along the groove.

[0089] In the third aspect, the seat element includes a seat and a connecting piece connected to the seat, the connecting piece being provided with a strip groove, and the second sliding pin being inserted into the strip groove and slidable along the strip groove.

[0090] In the third aspect, the infant carrier further includes an unfolding locking release mechanism adapted to drive the first stop to pivot in a direction away from the second sliding pin, so as to release the engagement between the hook of the first stop and the second sliding pin.

[0091] In the third aspect, the unfolding locking and releasing mechanism includes a first operating member connected to the first stop member, the first operating member being operably disposed on the seat element, and the first operating member being adapted to drive the first stop member to pivot in a direction away from the second sliding pin when operated, so as to release the engagement between the hook portion of the first stop member and the second sliding pin.

[0092] In the third aspect, the unfolding locking and releasing mechanism further includes a first traction member, one end of which is connected to the first operating member, and the other end of which is connected to the first stop member.

[0093] In the third aspect, the seat element includes a seat, the seat includes a seat body and a seat housing, the seat body and the seat housing enclose a first receiving cavity, the seat housing has a first opening, the first opening penetrates the seat housing. The first operating member includes a first connecting portion and a first operating portion connected to the first connecting portion, the first connecting portion is inserted into the first receiving cavity and connected to the first stop member, at least a portion of the first operating portion passes through the first opening and is movable along the first opening.

[0094] In the third aspect, the seat element includes a seat, the seat includes a seat body and a seat housing, the seat body and the seat housing enclose a first receiving cavity, and at least a portion of the deployment locking mechanism is received within the first receiving cavity.

[0095] In the third aspect, the infant carrier further includes a folding and locking mechanism, the folding and locking mechanism comprising: a fixing rod connected to the seat element; and a locking member pivotally connected to the base, the locking member being adapted to engage with the fixing rod to lock the frame in the folded state.

[0096] In the third aspect, the retraction locking mechanism further includes a retraction locking mechanism elastic element adapted to bias the locking member to pivot toward the fixed rod, such that the locking member engages with the fixed rod.

[0097] In the third aspect, the base includes a base body and a locking pivot shaft disposed on the base body, wherein the locking element is pivotally connected to the base body via the locking pivot shaft.

[0098] In the third aspect, the base body includes a first housing and a second housing, which together form a fourth receiving cavity. A second opening is provided on the second housing, penetrating through it. The locking member pivot is located within the fourth receiving cavity and is fixedly connected to the first housing. The locking member further includes a locking member connecting portion and a locking member hook portion. The locking member connecting portion is connected to the locking member hook portion and is pivotally connected to the locking member pivot. The locking member hook portion passes through the second opening and extends out of the fourth receiving cavity. The locking member engages with the fixing rod via the locking member hook portion.

[0099] In the third aspect, the retraction locking mechanism further includes a retraction locking mechanism elastic element and a fixing element, the fixing element being fixedly connected to the pivot shaft of the locking element, the retraction locking mechanism elastic element being disposed between the fixing element and the locking element, and the retraction locking mechanism elastic element being adapted to bias the locking element to pivot toward the fixing rod, such that the hook portion of the locking element engages with the fixing rod.

[0100] In the third aspect, the infant carrier further includes a locking and unlocking mechanism adapted to drive the locking member to pivot in a direction away from the fixing rod to release the locking member from the fixing rod.

[0101] In the third aspect, the retractable locking and unlocking mechanism includes a second operating member connected to the locking member, the second operating member being operably disposed on the base, and the second operating member being adapted to drive the locking member to pivot in a direction away from the fixed rod when operated, so as to release the locking member from the fixed rod.

[0102] In the third aspect, the locking element includes a fourth locking element and a fifth locking element, and a second connecting element located between the fourth locking element and the fifth locking element, wherein the two ends of the second connecting element are respectively connected to the fourth locking element and the fifth locking element, and the second operating element is connected to the second connecting element.

[0103] In the third aspect, the base includes a base bracket and an ISOFIX connector connected to the base bracket, the ISOFIX connector being adapted to attach to an ISOFIX interface in a vehicle.

[0104] In the third aspect, the base further includes a slide bar, one end of which is connected to the ISOFIX connector and the other end of which is slidably connected to the base support. The infant carrier also includes an adjustment device adapted to releasably lock the slide bar to the base support.

[0105] In the third aspect, the slide bar is provided with a plurality of adjustment holes. The adjustment device includes a second stop, which is movably disposed on the base and adapted to lock the slide bar to the base support. The base support is provided with a stop hole corresponding to the second stop, and one end of the second stop is adapted to pass through the stop hole and insert into one of the adjustment holes of the slide bar to releasably lock the slide bar to the base support.

[0106] In the third aspect, the base further includes a first housing and a second housing, the first housing and the second housing forming a fourth receiving cavity, the base support and the adjusting device are both received in the fourth receiving cavity and connected to the first housing, and a portion of the slide rod is received in the fourth receiving cavity and slidably connected to the base support.

[0107] In the third aspect, the base bracket further includes a sliding sleeve connected to the base bracket, the sliding sleeve being provided with a third through hole, and one end of the sliding rod passing through the third through hole and slidably connected to the base bracket.

[0108] In the third aspect, the adjusting device further includes a third operating member operably disposed on the base and connected to the second stop, the third operating member being adapted to drive the second stop to move synchronously to lock the slide rod to the base support or release the slide rod from the base support.

[0109] In the third aspect, the third operating member is provided with a first driving groove, and the other end of the second stop member is provided with a first driving pin. The first driving pin is inserted into and engaged with the corresponding first driving groove and is movable along the first driving groove.

[0110] In the third aspect, the first drive slot has a first position and a second position, wherein when the first drive pin is in the first drive slot in the first position, the slide bar is locked to the base bracket, and when the first drive pin is in the first drive slot in the second position, the slide bar is released from the base bracket.

[0111] In the third aspect, the adjusting device further includes a fixed seat connected to the base, and a third guide groove is provided on the fixed seat. The third guide groove is configured to guide the movement of the second stop member, and the first drive pin is inserted into and engaged with the third guide groove and is movable along the third guide groove.

[0112] In the third aspect, the adjusting device further includes an adjusting device elastic element adapted to bias the third operating member so that the third operating member is in an initial position when not operated.

[0113] In the third aspect, the seat element includes a seat belt positioning device having a seat belt slot, wherein when the infant vehicle is in car seat mode, the seat belt at the vehicle seat is adapted to pass through the seat belt slot to secure the infant vehicle to the seat.

[0114] In the third aspect, the infant carrier further includes a plurality of wheel elements connected to the frame. Each wheel element includes a wheel, the lowest point of which is higher than the bottom surface of the base when the frame is in the folded state.

[0115] In the third aspect, each wheel element further includes a mudguard, which is located below the wheel when the frame is in the retracted state, and the lowest point of the mudguard is equal to or higher than the bottom surface of the base.

[0116] In the third aspect, the infant carrier further includes: a plurality of wheels, wherein when the frame is in the unfolded state, the infant carrier in the form of a stroller is adapted to move by rotating the plurality of wheels; and a braking mechanism switchable between a locked state and an unlocked state, wherein when the braking mechanism is in the locked state, at least one predetermined wheel among the plurality of wheels cannot rotate, and when the braking mechanism is in the unlocked state, the at least one predetermined wheel can rotate.

[0117] In the third aspect, the predetermined wheel is provided with a plurality of second brake holes circumferentially along its hub, and the braking mechanism includes a locking pin movably disposed on the frame, the locking pin being movable between an unlocked position and a locked position, the locking pin having a locking end, wherein when the locking pin is in the locked position, the locking end of the locking pin extends 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 is released from engagement with one of the plurality of second brake holes.

[0118] In the third aspect, the hub of the predetermined wheel is provided with a plurality of protrusions, and the end of each protrusion facing the frame is provided with the second brake hole.

[0119] In the third aspect, the braking mechanism further includes a pedal component pivotally disposed on the base, the pedal component being pivotable between a traveling position and a stopping position, wherein when the pedal component pivots from the traveling position to the stopping position, the pedal component is adapted to drive the locking pin from the unlocking position to the locking position, and when the pedal component pivots from the stopping position to the traveling position, the pedal component is adapted to drive the locking pin from the locking position to the unlocking position.

[0120] In the third aspect, the braking mechanism further includes a third driving member movably disposed within the frame to drive the locking pin to move, and the pedal member is connected to the third driving member to drive the third driving member to move.

[0121] In the third aspect, 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 abuts against the driving surface, and the driving surface is configured such that when the third driving member moves, the driving surface causes the second driving pin to move, thereby driving the locking pin to move between the unlocking position and the locking position.

[0122] In the third aspect, the braking mechanism further includes a second traction member, one end of which is connected to the pedal member, and the other end of which is connected to the third driving member.

[0123] In the third aspect, the braking mechanism further includes: a first braking mechanism elastic member disposed between the third drive member and the frame, and adapted to bias the third drive member so that the locking pin can move toward the locking position; and a second braking mechanism elastic member disposed between the frame and the locking pin, and adapted to bias the locking pin to move toward the locking position.

[0124] In the third aspect, the base includes a base body and a brake connection portion connected to the base body, the brake connection portion having an engaging protrusion. The pedal component is pivotally connected to the brake connection portion, the pedal component having at least two interconnected engaging recesses, the engaging protrusion being capable of engaging with either of the engaging recesses, and a spring piece between two adjacent engaging recesses capable of locking the engaging protrusion within a desired engaging recess, thereby locking the pedal component in a moving or stopped position. The pedal component can be operated to overcome the elastic force of the spring piece, thereby engaging the engaging protrusion with different engaging recesses.

[0125] In the third aspect, the infant carrier further includes a movable element connected to and rotatable relative to the seat element.

[0126] In the third aspect, the infant carrier further includes a movable element pivotally connected to the seat element, the movable element comprising: two connecting arms pivotally connected to the seat element on opposite sides; a U-shaped handle body having adjustment portions at both ends, the two adjustment portions being respectively connected to the two connecting arms and slidable relative to the two connecting arms; and a length adjustment mechanism switchable between a locked state and an unlocked state, wherein when the length adjustment mechanism is in the unlocked state, the adjustment portions are slidable relative to the connecting arms, and when the length adjustment mechanism is in the locked state, the adjustment portions are fixed relative to the connecting arms.

[0127] In the third aspect, the length adjustment mechanism includes: a positioning member movably disposed in the adjustment part and switchable between an extended position and a retracted position; and a plurality of positioning holes disposed in the connecting arm, wherein when the positioning member is in the extended position, the positioning member engages with at least one of the plurality of positioning holes, and when the positioning member is in the retracted position, the positioning member disengages from the at least one of the plurality of positioning holes.

[0128] In the third aspect, the length adjustment mechanism further includes 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.

[0129] In the third aspect, the length adjustment mechanism further includes a pull rod, one end of which is connected to the handle, and the other end of which is connected to the positioning member. One of the pull rod and the positioning member is provided with a second drive groove, and the other of the pull rod and the positioning member is provided with a third drive pin. The third drive pin is inserted into and movable along the second drive groove. The extending direction of the second drive groove is intersected and not perpendicular to the moving direction of the positioning member, and the extending direction of the second drive groove is intersected and not perpendicular to the moving direction of the pull rod.

[0130] In the third aspect, the connecting arm is provided with a first hollow cavity for accommodating the adjusting part, the adjusting part is provided with a second hollow cavity, the adjusting part is provided with a third strip-shaped hole, the third strip-shaped hole is provided through the side wall of the second hollow cavity, the pull handle is provided around at least a portion of the outer periphery of the adjusting part and is movable along the adjusting part, the pull rod is provided in the second hollow cavity, and at least a portion of the pull rod passes through the third strip-shaped hole and is connected to the pull handle.

[0131] In the third aspect, the length adjustment mechanism further includes a guide seat, at least a portion of which is disposed within the adjustment section and has a fourth strip-shaped hole. The third drive pin is connected to the positioning member and passes through the fourth strip-shaped hole to be inserted into the second drive groove.

[0132] In the third aspect, 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.

[0133] In the third aspect, 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.

[0134] In the third aspect, 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.

[0135] In the third aspect, the adjustment part is provided with a limiting member, which is configured to prevent the handle body from being completely removed from the connecting arm.

[0136] In the third aspect, the connecting arm is provided with a first hollow cavity for accommodating the adjusting part, and the moving element further includes a handle fixing seat, the handle fixing seat is fixedly connected to the end of the connecting arm, and at least a portion of the handle fixing seat is inserted into the first hollow cavity, and the adjusting part is slidably connected to the connecting arm through the handle fixing seat. Simple Explanation of the Diagram

[0137] Figure 1 is a schematic diagram of the structure of an infant vehicle according to an embodiment of the present disclosure, in which the braking mechanism is in a braking state. Figure 2 is an enlarged view of point A in Figure 1. Figure 3 is a partial exploded view of the infant vehicle shown in Figure 1. Figure 4 is an enlarged view of section B in Figure 3. Figure 5 is a schematic diagram of the structure of the fixing base shown in Figure 4. Figure 6 is a schematic diagram of the retractable button shown in Figure 4. Figure 7 is a structural schematic diagram of the retractable button shown in Figure 6 from another perspective. Figure 8 is a partial cross-sectional view of the infant vehicle shown in Figure 1. At this time, the locking element is in the locked state and the frame is in the unfolded state. Figure 9 is another partial cross-sectional view of the infant vehicle shown in Figure 1, in which the locking element is in the unlocked state and the frame is in the process of being folded. Figure 10 is another partial sectional view of the infant vehicle shown in Figure 1, in which the locking element is in the unlocked state and the frame is in the folded state. Figure 11 is a side view of the infant vehicle shown in Figure 1, with the frame in the unfolded state. Figure 12 is a side view of the infant vehicle shown in Figure 1, with the frame in the folding process. Figure 13 is a side view of the infant carrier shown in Figure 12 further folded up. Figure 14 is a side view of the infant carrier shown in Figure 13 when it is further folded up. Figure 15 is a side view of the infant vehicle shown in Figure 1, with the frame in the folded state. Figure 16 is a perspective view of the infant vehicle shown in Figure 15 from another angle. Figure 17 is an enlarged view of point C in Figure 16. Figure 18 is a structural schematic diagram of the moving element in Figure 11 in cross-sectional view. Figure 19 is an enlarged view of point D in Figure 18. Figure 20 is an enlarged view of point E in Figure 18. Figure 21 is a schematic diagram of the length adjustment mechanism in Figure 18. Figure 22 is an enlarged view of point F in Figure 21. Figure 23 is a stereoscopic view of F in Figure 21 from another perspective. Figure 24 is a cross-sectional view of point F in Figure 21 with the first shell portion hidden. Figure 25 is another sectional view of point F in Figure 21. Figure 26 is a schematic diagram of the infant carrier shown in Figure 1 in rocking chair mode. Figure 27 is a schematic diagram of the infant carrier shown in Figure 1 in the basket mode. Figure 28 is a cross-sectional view of the infant carrier shown in Figure 1. Figure 29 is an enlarged view of point G in Figure 28. Figure 30 is an enlarged view of section H in Figure 28. Figure 31 is an enlarged view of point I in Figure 1. Figure 32 is another structural schematic diagram of the infant vehicle shown in Figure 1, in which the braking mechanism is in an unbraked state. Figure 33 is an enlarged view of point J in Figure 32. Figure 34 is an exploded view of the first connecting element and braking mechanism of the infant vehicle shown in Figure 1. Figure 35 is a schematic diagram of the brake control mechanism in the infant vehicle shown in Figure 34. Figure 36 is a schematic diagram of the brake operating component shown in Figure 35 from another perspective. Figure 37 is an exploded view of the brake operating component shown in Figure 36. Figure 38 is a schematic diagram of the structure of a brake operating component according to another embodiment of this disclosure. Figure 39 is a structural schematic diagram of the brake operating component shown in Figure 38 from another perspective. Figure 40 is a cross-sectional view along K1-K1 of the infant carrier shown in Figure 1. Figure 41 is a cross-sectional view along K2-K2 of the infant carrier shown in Figure 32. Figure 42 is a schematic diagram of the structure of the first pedal in the infant carrier shown in Figure 34. Figure 43 is a schematic diagram of the brake pusher in the infant vehicle shown in Figure 34. Figure 44 is a structural schematic diagram of the infant carrier described in an embodiment of the present disclosure when it is in rocking chair mode. Figure 45 is a structural diagram of the infant carrier shown in Figure 44 in the carrier mode. Figure 46 is a structural diagram of the infant vehicle shown in Figure 44 in the car safety seat mode. Figure 47 is a schematic diagram of the infant carrier shown in Figure 44 in stroller mode. Figure 48 is a structural schematic diagram of the infant vehicle shown in Figure 47 from another perspective. Figure 49 is a partial perspective view of the infant carrier shown in Figure 48 with the handle in an extended or retracted state, and an enlarged view of the portion within the dashed box. Figure 50 is a schematic diagram of the handle structure of the infant carrier shown in Figure 45, with the handle joints on both sides and the handle bar on one side hidden, and an enlarged view of the part within the dashed box. Figure 51 is a structural schematic diagram of the handle in the infant carrier shown in Figure 50, with the handle joints on both sides and the handle bar on one side hidden, and an enlarged view of the part within the dashed box. Figure 52 is an enlarged view of the infant carrier shown in Figure 45 along T1-T1 and the portion within the dashed box. Figure 53 is a structural schematic diagram of the handle in the infant carrier shown in Figure 45 and an enlarged view of the part within the dashed box. Figure 54 is an enlarged view of the infant carrier shown in Figure 53 along T3-T3 and the portion within the dashed frame. Figure 55 is a structural schematic diagram of the handle in the infant carrier shown in Figure 45 from another perspective. Figure 56 is an enlarged view of the handle shown in Figure 55 along T2-T2 and the portion within the dashed box. Figure 57 is an enlarged view of the infant carrier shown in Figure 47 along T4-T4 and the portion within the dashed box. Figure 58 is an enlarged view of the infant carrier shown in Figure 47 along T5-T5 and the portion within the dashed box. Figure 59 is an exploded view of the pivot joint, handle joint, and angle adjustment mechanism of the infant vehicle shown in Figure 58. Figure 60 is an exploded view of the pivot joint, handle joint, and angle adjustment mechanism of the infant vehicle shown in Figure 58 from another perspective. Figure 61 is a cross-sectional view of the handle in the infant carrier shown in Figure 47 and an enlarged view of the part within the dashed box. Figure 62 is a structural schematic diagram of the second restraint mechanism, the fixed seat, and the pivot button in the infant carrier shown in Figure 47. Figure 63 is a structural schematic diagram of the second restraint mechanism, fixed seat and pivot button in the infant carrier shown in Figure 62 from another perspective. Figure 64 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 element is in an extended state. Figure 65 is a structural schematic diagram of the infant vehicle in Figure 64 from another perspective. Figure 66 is a structural schematic diagram of the infant carrier shown in Figure 65 when the frame is in a semi-folded state. Figure 67 is a structural schematic diagram of the infant carrier shown in Figure 65 when the frame is in the folded state. Figure 68 is a structural schematic diagram of the infant carrier shown in Figure 64 from another perspective, in which the second seat shell is removed and the deployment locking mechanism is in a locked state. Figure 69 is an enlarged view of point O in Figure 68. Figure 70 is a schematic diagram of the infant carrier shown in Figure 68 when the locking mechanism is in the unlocked state. Figure 71 is an enlarged view of point P in Figure 70. Figure 72 is an enlarged view of point L in Figure 64. Figure 73 is a structural schematic diagram of the infant carrier in Figure 64 from another perspective, in which the frame is in the unfolded state. Figure 74 is a structural schematic diagram of the infant carrier in Figure 64 from another perspective, in which the frame is in a folded state. Figure 75 is a structural schematic diagram of the base of an infant carrier according to an embodiment of this application. Figure 76 is a structural schematic diagram of the base in Figure 75 from another perspective. Figure 77 is a schematic diagram of the base of Figure 75 after the second shell has been removed. Figure 78 is a structural schematic diagram of the base in Figure 77 from another perspective. Figure 79 is a cross-sectional view of the base in Figure 75. Figure 80 is a longitudinal sectional view of the base in Figure 75, in which the second operating member is not pressed or moved. Figure 81 is a longitudinal sectional view of the base in Figure 75, in which the second operating element is pressed and moved. Figure 82 is a partial exploded view of the infant vehicle in Figure 64 from another perspective. Figure 83 is an enlarged view of point Q in Figure 82. Figure 84 is a partial cross-sectional view of the wheels and rear outriggers of an infant vehicle according to an example of this application, wherein the braking mechanism is in a locked state. Figure 85 is a schematic diagram of the wheel and rear outrigger in Figure 84, wherein the braking mechanism is in the unlocked state. Figure 86 is a partial exploded view of the infant vehicle shown in Figure 64 from another perspective. Figure 87 is an enlarged view of point R in Figure 86. Figure 88 is a schematic diagram of the footrest of an infant vehicle according to an embodiment of this application. Figure 89 is a schematic diagram of the structure of a handle element of an infant carrier according to an embodiment of the present application, wherein the handle is in a shortened state. Figure 90 is an exploded view of the handle component in Figure 89. Figure 91 is an exploded view of the length adjustment mechanism in Figure 90. Figure 92 is a cross-sectional view of the handle element in Figure 89. Figure 93 is an enlarged view of point S in Figure 92. Implementation

[0138] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0139] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0140] 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 in the description of this invention 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.

[0141] One embodiment of the present invention provides an infant carrier that can switch between multiple usage modes such as an infant stroller, car seat, infant carrier, or rocker, and has a simple structure and is easy to use.

[0142] Specifically, as shown in Figure 1, the infant vehicle includes a seat element 100, a frame 200, a switching mechanism 600, a moving element 900, an angle adjustment mechanism 500, a wheel element 400, and a braking mechanism 800.

[0143] Specifically, as shown in Figure 1, the seat element 100 includes a seat 110 for infants and toddlers to sit or lie on, and a folding limiting part 120 disposed on the seat 110 (see Figures 16 and 17). In this embodiment, the folding limiting part 120 is a folding limiting protrusion disposed on the bottom of the seat 110. Of course, in other embodiments, the folding limiting part 120 may also be disposed on the front side, rear side, or other positions of the seat 110. The folding limiting part 120 may also be a limiting groove or a limiting hook, etc.

[0144] Specifically, the seat 110 includes a seat shell 112 made of rigid 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 ensures support strength while being lighter and easier to move. The folding limit part 120 is used to lock the frame 200 in the folded state (see details below).

[0145] Furthermore, the frame 200 has an unfolded state and a folded state. The frame 200 is attached to the seat element 100, meaning that the frame 200 can support the seat element 100. When the frame 200 is in the unfolded state, the infant carrier is suitable for use as an infant stroller; when the frame 200 is in the folded state, the infant carrier is suitable for use as a car seat, infant carrier, or rocker, etc. Specifically, as shown in Figure 1, the frame 200 includes a first support frame 230 and a second support frame 220 that are pivotally connected to each other. Both the first support frame 230 and the second support frame 220 are made of aluminum tubing, making the frame 200 relatively lightweight and easy to carry.

[0146] Specifically, as shown in Figure 1, both the first support frame 230 and the second support frame 220 are approximately U-shaped. The first support frame 230 includes two first support rods 231 and a first connecting element 232 connecting the two first support rods 231. The second support frame 220 includes two second support rods 221 and a second connecting element 222 connecting the two second support rods 221. The two first support rods 231 are pivotally connected to the left and right sides of the seat element 100, respectively, with the two second support rods 221. Each first support rod 231 is pivotally connected to each second support rod 221 at a first pivot point P1. The first pivot point P1 is slidably connected to the seat element 100. In this embodiment, when the frame 200 is in the unfolded state, the first pivot point is located at the first position of the seat element 100; when the frame 200 is in the folded state, the first pivot point is located at the second position of the seat element 100. Taking the imaginary horizontal cross-section of the bottom of the seat element 100 as the horizontal reference plane 10, the first position is closer to the horizontal reference plane 10 than the second position. Using the imaginary vertical cross-section at the foremost end of the seat element 100 as the vertical reference plane 20, the first position is closer to the vertical reference plane 20 than the second position. That is, the sliding path of the first pivot point is inclined upward in the direction from front to back.

[0147] Specifically, as shown in Figure 1, the first connecting element 232 is in the shape of a straight rod. The second connecting element 222 includes a connecting rod 2421 and two connecting sleeves 2422. The connecting rod 2421 is a hollow rod structure, and both ends of the connecting rod 2421 are at least partially inserted into the two connecting sleeves 2422. Taking the frame 200 on one side of the seat element 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 respectively attached to the seat element 100 through the first connecting seat 213 and the second connecting seat 243. Taking this embodiment as an example, the first support frame 230 and the second support frame 220 are respectively attached to the seat body 111 of the seat 110 through the first connecting seat 213 and the second connecting seat 243. The first support frame 230 and the second support frame 220 are pivotally connected to each other via the first connecting seat 213 and the second connecting seat 243, and are rotatable relative to the seat element 100. The first connecting seat 213 provides support for the seat element 100, and the second connecting seat 243 provides direct or indirect support for the seat element 100. In this embodiment, when the frame 200 is in the unfolded state, the first support frame 230 and the second support frame 220 are pivotally connected to each other via the first connecting seat 213 and the second connecting seat 243 to form a triangular support structure, thereby providing stable support for the seat element 100.

[0148] Further, as shown in Figures 1 and 2, the switching mechanism 600 is disposed between the seat element 100 and the frame 200, and enables the frame 200 to switch between an unfolded state and a folded state. Specifically, the switching mechanism 600 includes a linkage element 610 and a locking element 620. The linkage element 610 is connected between the frame 200 and the seat element 100. The locking element 620 can be operated to switch between a locked state and an unlocked state. When the locking element 620 is in the locked state, it can lock the frame 200 in the unfolded state. When the locking element 620 is in the unlocked state, it can, through the linkage element 610, link the frame 200 to switch from the unfolded state to the folded state or vice versa. In this embodiment, there are two switching mechanisms 600, respectively disposed between the left and right sides of the seat element 100 and between the left and right sides of the frame 200. Of course, in other embodiments, the number of switching mechanisms 600 may be more than two or less than two.

[0149] The following description uses one of the switching mechanisms, 600, as an example to illustrate its structure and connection relationships:

[0150] As shown in Figure 1, the linkage element 610 includes a first linkage rod 611 and a second linkage rod 612. The two ends of the first linkage rod 611 are pivotally connected to the first support frame 230 and the seat element 100, respectively, and the two ends of the second linkage rod 612 are pivotally connected to the second support frame 220 and the seat element 100, respectively.

[0151] Specifically, as shown in Figures 2 to 4, the locking element 620 includes a fixing base 621, a first locking member 622, and a closing button 623.

[0152] As shown in Figures 4 and 5, the fixing seat 621 is fixed to one side of the seat 110. The fixing seat 621 provides a sliding track for the pivot points of the first support rod 231, the second support rod 221, and the seat element 100 during the transition of the frame 200 from an unfolded state to a folded state or vice versa. In this embodiment, both the sliding track and the fixing seat 621 are elongated structures. In other embodiments, the fixing seat 621 can also be any structure other than an elongated structure, as long as the sliding track is elongated. Of course, in other embodiments, the sliding track does not necessarily have to be a strictly straight structure; for example, it can be an arc-shaped structure with a certain curvature.

[0153] Specifically, as shown in Figures 4 and 5, 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 through fasteners A10. The fixing seat 621 has a second receiving cavity 6211 (see Figure 8) and an opening groove 6212 communicating with the second receiving cavity 6211. The opening groove 6212 has a first opening 6213 with a relatively large diameter and a second opening 6214 with a relatively small diameter.

[0154] As shown in Figures 4 and 8, 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 seat 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 through welding or other means. The locking protrusion 6222 can extend out of the second receiving cavity 6211 through the first opening 6213. At least part 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.

[0155] Further, as shown in Figures 6 to 8, the retractable button 623 is connected to the frame 200. Specifically, as shown in Figure 11, 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 can also be formed by connecting the independent connecting part 6231 and the operating part 6232 through welding or other means. The retractable button 623 is slidably connected to the seat element 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 retraction 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, as shown in FIG11, 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.

[0156] Furthermore, the folding 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 element 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 element 610 from sliding relative to the seat element 100. Thus, when the frame 200 is in the unfolded state as shown in FIG. 11, based on the triangular support structure formed by the pivotal connection between the first support frame 230 and the second support frame 240 of the frame 200, the linkage element 610 cannot drive the frame 200 to fold, thereby 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 causes the locking protrusion 6222 and the locking recess 6235 to disengage, and the locking element 620 is in an unlocked state. The retraction button 623 and the fixed base 621 can slide relative to each other, and the frame 200 can be retracted. During the sliding process of the retraction 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 closing 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.

[0157] Of course, in other embodiments, the opposite can also be true, with the fixing base 621 and the first locking member 622 fixed to the frame 200, and the retraction button 623 fixed to the seat element 100. Alternatively, other forms of locking elements 620 can also be used.

[0158] The following uses the structure of one side of seat element 100 as an example to illustrate the specific process of switching between the unfolded and folded states of the infant carrier:

[0159] When it is necessary to switch the frame 200 from the unfolded state to the folded state, so that the infant carrier can be switched from the use mode of an infant stroller to the use mode of a car seat, infant carrier, or rocker, as shown in Figure 8, the operating part 6232 of the folding button 623 can be pressed in the F1 direction first, so that the push protrusion 6234 pushes the locking body 6221 through the second opening 6214, so that the first locking member 622 rotates around the second pivot point P2 in the F2 direction, so that the locking protrusion 6222 and the locking recess 6235 are released, and the locking element 620 is in the unlocked state. As shown in Figures 9 and 10, at this time, since the locking protrusion 6222 has exited the sliding path, the folding button 623 and the fixed seat 621 can slide relative to each other, so the first connecting seat 233 and the seat element 100 can also slide relative to each other. At this time, the elastic arm 6223 undergoes elastic deformation. As shown in Figures 11 to 14, the retractable button 623 can slide relative to the fixed seat 621 along the F3 direction. Simultaneously, since either the first connecting seat 233 or the second connecting seat 243 is attached to the retractable button 623, the first connecting rod 611 and the second connecting rod 612 can simultaneously drive the first support rod 231 and the second support rod 241 (i.e., the first support frame 230 and the second support frame 240) to rotate along the F4 direction. At the same time, the first support rod 231 and the second support rod 241 also slide relative to the fixed seat 621 along the F3 direction. As shown in Figure 15, when the first support rod 231 and the second support rod 241 rotate and retract to their positions, the first support rod 231 and the second support rod 241 are in a parallel and substantially overlapping state. Simultaneously, the wheel element 400 connected to the first support frame 230 (denoted as the front wheel element 400) and the wheel element 400 connected to the second support frame 240 (denoted as the rear wheel element 400) are also in a parallel and substantially overlapping state. Each wheel element 400 includes a wheel mounting bracket 430 and a wheel body 440. It should be noted that the overlap referred to here can include the center of the front wheel body 430 and the rear wheel body 430 coinciding, or the axial projection of the front wheel body 430 being within the axial projection range of the rear wheel body 430, or vice versa. It can also include the center of the front wheel body 430 being within the axial projection range of the rear wheel body 430, or vice versa. Specifically, the length of the second connecting element 242 is greater than the length of the first connecting element 232, such that the distance between the two second support rods 241 is greater than the distance between the two first support rods 231. Therefore, in the retracted state of the frame 200, the first support rods 231 and the second support rods 241, the front wheel element 400, and the rear wheel element 400 can all be in a state of substantial overlap.Furthermore, during the folding process, the frame 200 moves rearward relative to the seat element 100, and the pivot point P1 between the frame 200 and the seat element 100, i.e., the first pivot point P1, moves upward relative to each other. The center of the front wheel body 430 (or the center of the rear wheel body 430) is basically on the same horizontal plane as the pivot point of the frame 200 and the seat element 100, 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 element 100 is parallel to the horizontal reference plane 10. Thus, the rotation angle range of the first support frame 230 and the second support frame 240 during the unfolding and folding process is small, resulting in a smaller overall volume of the folded infant carrier, thereby reducing transportation costs, facilitating carrying in carrier mode, and also benefiting use in rocker or car seat modes. Meanwhile, as shown in Figure 16, the second connecting element 242 of the second support frame 240 engages with the folding limiting part 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 in case of an accident.

[0160] As shown in Figure 15, since the folded frame 200 is located at a relatively lower position on the outer side of the seat element 100, and the ISOFIX connector 360, which is rotatably disposed on the outer side of the seat element 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 or its engagement with the car seat.

[0161] When it is necessary to switch the frame 200 from the folded state to the unfolded state, so that the infant vehicle can be switched from the use mode of a car seat, infant carrier, or rocker to the use mode of an infant stroller, as shown in Figure 16, the second connecting element 242 can be manually pulled to deform the second connecting element 242 and disengage it from the limiting fixation of the folding limiting part 120. As shown in Figures 15 and 14, both the first support frame 230 and the second support frame 240 rotate in the opposite direction of F4. As shown in Figures 13 and 12, during the unfolding process, the first support frame 230 and the second support frame 240 also simultaneously drive the folding button 623 to move relative to the fixed base 621 in the opposite direction of F3. As shown in Figures 10, 9, and 8, during the sliding process of the retractable button 623, the connecting part 6231 will move past the locking protrusion 6222 and to the left side of the locking protrusion 6222. The locking protrusion 6222 of the third locking member 622 will re-engage with the locking recess 6235 of the retractable button 623, thereby locking the frame 200 in the unfolded state to ensure that the frame 200 will not be released unexpectedly after unfolding. Specifically, before retracting, the locking protrusion 6222 is located on the sliding path of the retractable button 623. During the retracting process, the limiting step 6236 of the retractable button 623 (through the inclined surface 6222a on the locking protrusion 6222) pushes the locking protrusion 6222, allowing the third locking member 622 to pivot and the locking protrusion 6222 to pass over the limiting step 6236.

[0162] Further, as shown in Figure 18, the movable element 900 is mounted on the seat element 100 to facilitate the user's movement of the infant carrier. When the frame is in the unfolded state and the infant carrier is in the stroller usage mode, the movable element 900 can be used as the stroller's handle. When the frame is in the folded state, as shown in Figures 15, 26, and 27, and the infant carrier is in the car seat, carrier, or rocker usage mode, the movable element 900 serves as the car seat's top bar, the carrier's handle, or is folded back into the rocker.

[0163] As shown in Figure 1, the movable element 900 has a roughly U-shaped rod structure, including a movable body 980 and movable rods 970 connected to both ends of the movable body 980. To accommodate different usage habits, the lengths of both movable rods 970 are adjustable. The specific structure of one of the movable rods 970 is described below as an example:

[0164] As shown in Figure 18, the movable rod 970 includes a first rod portion 971, a second rod portion 972, and a length adjustment mechanism 973. The first rod portion 971 is partially inserted into the second rod portion 972, and the length adjustment mechanism 973 is disposed between the first rod portion 971 and the second rod portion 972. The length adjustment mechanism 973 can adjust the length of the first rod portion 971 inserted into the second rod portion 972. In this embodiment, both the first rod portion 971 and the second rod portion 972 are hollow rod structures. Of course, in other embodiments, the first rod portion 971 and the second rod portion 972 can also be partially hollow rod structures. In this embodiment, the first rod portion 971 is connected to the movable body 980, and the end of the second rod portion 972 away from the first rod portion 971 is pivotally connected to the seat body 111 of the seat 110 at a third pivot point P3. In other embodiments, the positions of the first rod portion 971 and the second rod portion 972 can also be interchanged. The third pivot point P3 and the first pivot point P1 are not in the same position, that is, the third pivot point P3 and the first pivot point P1 are set at intervals.

[0165] Specifically, as shown in Figures 19 and 20, the length adjustment mechanism 973 includes a fixed plug 9731, a locking pin 9732, an operating element 9733, and a first reset member 9734. The fixed plug 9731, at least a portion of the locking pin 9732, the operating element 9733, and the first reset member 9734 are all located on the first rod portion 971. The second rod portion 972 has a plurality of locking holes 4241 arranged sequentially along its length. The locking pin 9732 has a first locking position and a first unlocking position. When the locking pin 9732 is in the first locking position, it can be inserted into one of the plurality of locking holes 4241. When the locking pin 9732 is in the first unlocking position, it can be released from one of the plurality of locking holes 4241, thereby achieving relative fixation or relative sliding between the first rod portion 971 and the second rod portion 972.

[0166] Specifically, as shown in Figures 21 to 24, the fixing plug 9731 is fixedly disposed within the first rod portion 971 and near the lower end of the first rod portion 971. The fixing plug 9731 is generally rectangular in shape. For ease of description, the structure of the fixing plug 9731 will be described in Cartesian coordinates below. The fixing plug 9731 has a first through hole 9731a, a second through hole 9731b, and a third sliding groove 9731c. As shown in Figure 23, the first through hole 9731a penetrates the first side surface 9731d and the second side surface 9731e of the fixing plug 9731 along the x-axis. The locking pin 9732 is movably disposed in the first through hole 9731a, and at least a portion of the locking pin 9732 can extend out of the first through hole 9731a and engage with one of the plurality of locking holes 4241. Of course, in other embodiments, the first through hole 9731a may also penetrate only the first side surface 9731d or the second side surface 9731e of the fixing plug 9731. As shown in Figure 24, the second through hole 9731b penetrates the third side surface 9731f and the fourth side surface of the fixing plug 9731 along the y-axis, and the second through hole 9731b is connected to the first through hole 9731a. The cross-sectional shape of the second through hole 9731b on the third side surface 9731f and the fourth side surface is along 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 part of the driving protrusion 9732a can protrude from the second through hole 9731b. The opposite third side surface 9731f and the fourth side surface (not shown in the figure) of the fixing plug 9731 are each provided with a third sliding groove 9731c extending along the z-axis, and the two ends of the second through hole 9731b respectively penetrate the groove walls of the two third sliding grooves 9731c, that is, the third sliding grooves 9731c are connected to 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 connected and their extension directions are intersecting.

[0167] Further, as shown in Figures 18 and 21, the operating element 9733 can be operated to drive the locking pin 9732 to move in a direction disengaging from one of the plurality of locking holes 4241. The operating element 9733 includes a pull rod 9733a and length adjustment operating members 9733b and a drive plug 9733c respectively disposed at both ends of the pull rod 9733a. In this embodiment, the length adjustment operating member 9733b is an adjusting slider that can slide along the first rod portion 971, and the length adjustment operating member 9733b is at least partially located outside the first rod portion 971 for operation.

[0168] As shown in Figure 23, the drive plug 9733c has a roughly 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 opposite 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.

[0169] As shown in Figure 23, when the driving protrusion 9732a moves to position P along the driving inclined 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 inclined 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.

[0170] Further, as shown in Figures 23 and 25, 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 to 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.

[0171] The length adjustment process of the moving rod 970 is described in detail below:

[0172] First, as shown in Figures 18 to 21, the length adjustment operating member 9733b is moved along the F5 direction. The length adjustment operating member 9733b, via the pull rod 9733a, drives the drive plug 9733c to move along the F5 direction as well. The drive protrusion 9732a, under the action of the drive groove 9733g, moves from position P to position Q, simultaneously driving the locking pin 9732 from the first locking position to the first unlocking position. The locking pin 9732, originally engaged with a locking hole 4241, exits from that locking hole 4241. The first rod portion 971 and the second rod portion 972 can move relative to each other. At this time, the first reset member 9734 is compressed. Then, the first rod portion 971 can be moved relative to the second rod portion 972 to adjust the moving rod 970 to a suitable length. At this point, the external force applied to the length adjustment operating member 9733b can be removed, and the drive plug 9733c resets in the opposite direction of F5 under the elastic force of the first reset member 9734. Therefore, under the action of the drive groove 9733g, the drive protrusion 9732a moves back from position Q to position P, simultaneously moving the locking pin 9732 from the first unlocking position to the first locking position. The locking pin 9732 is then re-inserted into the other locking hole 4241, and the first rod portion 971 and the second rod portion 972 are relatively fixed. This completes the length adjustment process of the moving rod 970. The length adjustment process of the other moving rod 970 is the same. By simultaneously operating the length adjustment operating parts 9733b on both moving rods 970, the overall length adjustment of the moving element 900 can be achieved.

[0173] Of course, in other embodiments, the configuration can be reversed, where the fixing plug 9731, at least a partial locking pin 9732, operating element 9733, and first reset member 9734 are all located on the second rod portion 972, while the first rod portion 971 has a plurality of locking holes 4241 arranged sequentially along its length. In short, any configuration that allows for relative movement and relative fixation of the first rod portion 971 and the second rod portion 972 is acceptable.

[0174] Furthermore, an angle adjustment mechanism 500 is provided between the seat element 100 and the moving element 900. The angle adjustment mechanism 500 is used to adjust the tilt angle of the moving element 900 relative to the seat element 100. As shown in Figure 15, when the infant vehicle is used as a car safety seat, the moving element 900 can rotate to the opposite front side of the seat 110 to serve as the top bar of the car safety seat; as shown in Figure 26, when the infant vehicle is used as a rocker, the moving element 900 can rotate and fold to the opposite rear side of the seat 110; as shown in Figure 27, when the infant vehicle is used as a carrier, the moving element 900 can rotate to the opposite center of the seat 110 to serve as the handle of the carrier.

[0175] Specifically, as shown in Figures 28 to 30, the angle adjustment mechanism 500 includes a movable connecting seat 510, a seat connecting seat 520, a third locking part 530, an angle adjustment operating member 540, and a second reset member 550. The movable connecting seat 510 is fixedly connected to the movable element 900 and has a first locking part 511. Specifically, the movable connecting seat 510 is generally disc-shaped, and a through first mating groove 512 is provided in the approximate center of the movable connecting seat 510. At least a portion of the first mating groove 512 is a gear groove, and this portion of the first mating groove 512 is the first locking part 511. The seat connecting seat 520 is fixedly connected to the seat element 100 and has a second locking part 521. Specifically, the seat connecting seat 520 is disc-shaped, approximately the same size as the movable connecting seat 510, and a second mating groove 522 is provided in the approximate center of the seat connecting seat 520. The second mating groove 522 is a non-through groove and communicates with the first mating groove 512. In this embodiment, at least a portion of the second mating groove 522 is a gear groove, and this portion of the second mating groove 522 is the second locking part 521. The movable connecting seat 510 and the seat connecting seat 520 are pivotally connected to each other through the second pivot shaft B20.

[0176] Furthermore, the third locking part 530 is movably disposed between the movable connecting seat 510 and the seat connecting seat 520, and the third locking part 530 has a second locking position and a second unlocking position. When the third locking part 530 is in the second locking position, the third locking part 530 is simultaneously locked and engaged with the first locking part 511 and the second locking part 521, so that the movable connecting seat 510 and the seat connecting seat 520 are relatively fixed; when the third locking part 530 is in the second unlocking position, the third locking part 530 can be disengaged from one of the first locking part 511 and the second locking part 521, so that the movable connecting seat 510 can rotate relative to the seat connecting seat 520. In this embodiment, the third locking part 530 is a locking gear, which can move between the first mating groove 512 and the second mating groove 522. The locking gear can engage with the gear groove of the first mating groove 512 and the gear groove of the second mating groove 522 respectively, or simultaneously with the gear groove of the first mating groove 512 and the gear groove of the second mating groove 522.

[0177] Furthermore, the angle adjustment operator 540 is driven to the third locking part 530, and the angle adjustment operator 540 can be operated to drive the third locking part 530 to move towards the second unlocking position. Specifically, the angle adjustment operator 540 is an adjustment button, which is movably disposed in the first mating groove 512 and abuts against the third locking part 530. Thus, when the user puts their hand into the first mating groove 512 and presses the end of the angle adjustment operator 540 away from the third locking part 530, the third locking part 530 can be driven to move towards the second unlocking position.

[0178] 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 locking 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.

[0179] The following describes the angle adjustment process of the moving element 90°:

[0180] First, as shown in Figure 29, press the angle adjustment operating member 540 along the F6 direction. The angle adjustment operating member 540 pushes 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 in Figure 30. At the same time, the third locking part 530 only engages with the second locking part 521, and the movable connecting seat 510 can rotate relative to the seat connecting seat 520. At this time, the movable connecting seat 510 can be rotated to adjust the moving element 900 to a suitable tilt angle. After the adjustment is completed, the external force applied to the angle adjustment operating member 540 can be removed. The third locking part 530 will then be 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, as shown in Figure 29. That is, 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 relatively fixed, and the moving element 900 is fixed at the new tilt angle. Simultaneously, the third locking part 530 pushes the angle adjustment operating part 540 back to its original position. Thus, the angle adjustment of the moving element 900 can be achieved through a simple structure, and the operation is straightforward.

[0181] Further, as shown in Figure 1, both the first support frame 230 and the second support frame 240 have wheel elements 400 at their ends away from the seat element 100. In this embodiment, there are four wheel elements 400, two of which are connected to the bottom ends of the two first support rods 231 respectively, and are both front wheel elements 400; the other two wheel elements 400 are connected to the bottom ends of the two second support rods 241 respectively, and are both rear wheel elements 400. Each wheel element 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 elements 400 are connected by a first connecting element 232. The wheel mounting frames 430 of the two rear wheel elements 400 are connected by a second connecting element 242. The wheel body 440 is rotatably mounted on the wheel mounting frame 430.

[0182] Furthermore, the braking mechanism 800 is disposed between the frame 200 and the wheel elements 400, and has a braking state that prevents the wheel elements 400 from rotating (as shown in Figures 1 and 31) and an unbraked state that allows the wheel elements 400 to rotate (as shown in Figures 32 and 33). In this embodiment, the braking mechanism 800 is disposed between the second connecting element 242 and the two rear wheel elements 400. Of course, in other embodiments, the braking mechanism 800 may also be disposed between the first connecting element 232 and the two front wheel elements 400, or both between the first connecting element 232 and the two front wheel elements 400 and between the second connecting element 242 and the two rear wheel elements 400, or the braking mechanism 800 may also be disposed between the second connecting element 242 and one of the rear wheel elements 400 or one of the front wheel elements 400.

[0183] Specifically, as shown in Figure 34, the braking mechanism 800 includes a brake lever 860, a brake operating component 870, a brake pushing component 880, and a third reset component 890.

[0184] As shown in Figure 34, there are two brake levers 860, each movably mounted in the connecting rod 2421. The brake operating component 870 is a brake pedal, including a first pedal 871 and a second pedal 872 connected to each other. In this embodiment, as shown in Figures 35 to 37, the first pedal 871 has a fixing hole 8711, and the second pedal 872 has an elastic finger 8721. The connection between the first pedal 871 and the second pedal 872 is achieved by engaging the elastic finger 8721 with the fixing hole 8711. Of course, in other embodiments, the first pedal 871 and the second pedal 872 can also be connected in other ways, or the brake operating component 870 can be integrally molded, as shown in Figures 38 and 39. There are two brake pushers 880, which are respectively spaced and sleeved on the connecting rod 2421. The first pedal 871 and the second pedal 872 are respectively sleeved on the two brake pushers 880. The two brake levers 860 are fixedly connected to the two brake pushers 880. In this embodiment, the third reset member 890 is a spring. The third reset member 890 is disposed in the connecting rod 2421 and its two ends abut against the two brake push members 880 respectively.

[0185] The overall structure of the braking mechanism 800 is basically symmetrical with the connection between the first pedal 871 and the second pedal 872 as the boundary. The specific structure of the braking mechanism 800 is described below using the structure of one side of the first pedal 871 as an example:

[0186] As shown in Figure 40, the brake lever 860 is positioned near one end of the connecting rod 2421, specifically near the corresponding connecting sleeve 2422. The brake lever 860 has a first slotted hole 861 extending along the length of the connecting rod 2421. A first pin A20 passes through the connecting rod 2421 and the connecting sleeve 2422 and is inserted into the first slotted hole 861 of the brake lever 860. Thus, through the interaction between the first pin A20 and the first slotted hole 861, the movement of the brake lever 860 along the length of the connecting rod 2421 is restricted, and its travel distance is limited.

[0187] Further, as shown in Figure 34, the wheel body 440 is circumferentially provided with a plurality of second brake holes 441 that can mate with the brake lever 860, and the wheel mounting bracket 430 is provided with a connecting hole 431 that is opposite to and communicates 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 connecting hole 431 on the wheel mounting bracket 430. The brake lever 860 has a third locked position and a third unlocked position. When the brake lever 860 is in the third locked position, as shown in Figure 40, the brake lever 860 can pass through the connecting hole 431 and engage with one of the plurality of second brake holes 441, thereby preventing the wheel body 440 from rotating. When the brake lever 860 is in the third unlocked position, as shown in Figure 41, the brake lever 860 can pass through the connecting hole 431 and disengage from one of the plurality of second brake holes 441, thereby allowing the wheel body 440 to rotate.

[0188] Further, as shown in Figure 35, the first pedal 871 is generally L-shaped, including a sleeve portion 8712 and a stepping portion 8713 connected to each other. In this embodiment, the first pedal 871 is a one-piece molded structure. Of course, in other embodiments, the first pedal 871 can also be formed by connecting the independent sleeve portion 8712 and the stepping portion 8713 through welding or other methods. As shown in Figure 72, the sleeve portion 8712 has a cylindrical mounting cavity 8712a, and a first mating portion is provided inside the mounting cavity 8712a. In this embodiment, the first mating portion is a push rib 8712b. The sleeve portion 8712 also has a display window 8712c that can communicate with the mounting cavity 8712a. The stepping portion 8713 is used for users to perform stepping operations. In this embodiment, the first pedal 871 and the second pedal 872 are generally U-shaped after being engaged and connected.

[0189] Further, as shown in Figure 43, the brake pusher 880 is generally cylindrical in shape. One end of the brake pusher 880 is a mating end 881, which is provided with a second mating part and a third mating part that can mate with the first mating part. In this embodiment, the second mating part and the third mating part are respectively a brake groove 882 and a positioning groove 883 that can mate with the pusher rib 8712b. The brake groove 882 is deeper than the positioning groove 883, that is, the bottom of the brake groove 882 is farther away from the outer edge of the mating end 881 than the bottom of the positioning groove 883. The outer wall of the brake pusher 880 is also provided with a first mark 884 and a second mark 885. The first mark 884 is located near the brake groove 882, and the second mark 885 is located near the positioning groove 883. The first mark 884 can be, for example, a red mark, indicating that the wheel element 400 is in a braking state. The second mark 885 can be, for example, a green mark, indicating that the wheel element 400 is in an unbraked state. Of course, in other embodiments, the first identifier 884 and the second identifier 885 can also be in other forms, as long as they can be easily distinguished.

[0190] Further, as shown in Figures 40 and 41, the brake pusher 880 is sleeved on the connecting rod 2421, and the mating end 881 of the brake pusher 880 faces the corresponding side of the wheel body 440, that is, the bottom of the brake groove 882 is farther away from the bottom of the positioning groove 883 from the corresponding side of the wheel body 440. The connecting rod 2421 is provided with a second strip hole 2421a, and the second pin A30 passes through the brake pusher 880, the second strip hole 2421a, and the brake rod 860, thereby fixing the brake rod 860 to the brake pusher 880, and at the same time enabling the brake pusher 880 and the brake rod 860 to move as a whole relative to the connecting rod 2421 along the length direction of the connecting rod 2421. In this embodiment, the second strip hole 2421a and the first strip hole 861 are the same size. This ensures that the first pin A20 and the second pin A30 can move synchronously with the brake rod 860. The first pedal 871's sleeve portion 8712 is rotatably sleeved on the outside of the brake pusher 880; in other words, the brake pusher 880 is disposed within the mounting cavity 8712a. The pusher rib 8712b within the mounting cavity 8712a is disposed opposite to the mating end 881 of the brake pusher 880, and is located on the side of the mating end 881 closer to the wheel element 400.

[0191] Furthermore, the first pedal 871 or brake operating member 870 is rotatable relative to the first connecting element 232. The first pedal 871 has a first rotational position and a second rotational position. When the first pedal 871 is rotated to the first rotational position, as shown in FIG40, the first mating part engages with the second mating part, that is, the push rib 8712b is inserted into the brake groove 882, and the brake push member 880 moves to place the brake lever 860 in the third locking position, that is, 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, thereby putting the brake mechanism 800 in a braking state that prevents the wheel body 440 from rotating. At this time, the first indicator 884 is exactly opposite to the display window 8712c, thereby prompting the user that the infant vehicle has been braked. When the second pedal 872 rotates to the second rotation position, as shown in Figure 41, the first mating part and the third mating part engage, that is, the push rib 8712b is inserted into the positioning groove 883. The brake push member 880 moves to place the brake lever 860 in the third release position, that is, the brake lever 860 moves to a position relatively away from the wheel body 440 and exits from one of the second brake holes 441, thereby putting the brake mechanism 800 in an unbraked state that allows the wheel body 440 to rotate. At this time, the second indicator 885 is exactly opposite to the display window 8712c, thereby prompting the user that the infant vehicle is not braked.

[0192] Further, as shown in Figures 40 and 41, the third reset member 890 is disposed in the connecting rod 2421 and abuts against the brake push member 880. The third reset member 890 constantly moves the brake lever 860 to the third locked position. In this embodiment, the third reset member 890 is a spring. The third reset member 890 is located approximately in the middle of the connecting rod 2421, and its two ends abut against the two brake push members 880 respectively.

[0193] The working principle of brake mechanism 800 is explained in detail below:

[0194] When the brake needs to be released, as shown in Figures 1 and 31, the user can lift the pedal portion 8713 of the first pedal 871. Since the first pedal 871 is connected to the second pedal 872, the pedal portions 8713 of both the first pedal 871 and the second pedal 872 are lifted simultaneously, causing the first pedal 871 to rotate from the first rotation position to the second rotation position, as shown in Figures 32 and 33. The push rib 8712b on the first pedal 871 changes from cooperating with the brake groove 882 of the brake push member 880 to cooperating with the positioning groove 883, as shown in Figure 41. Since 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 drives the brake lever 860 connected to it to move from the third locking position to the third unlocking position. The brake lever 860 exits from one of the second brake holes 441, the brake mechanism 800 is in an unbraked state, and the wheel body 440 can rotate. At this time, since the two brake pushers 880 are actually moving towards each other, the third reset member 890, which abuts between the two brake pushers 880, is compressed and deformed. At the same time, the second indicator 885 is opposite to the display window 8712c, thereby prompting the user that the infant vehicle is not braked.

[0195] When braking is required, the process is reversed. The user can press down on the pedal part 8713 of the first pedal 871, causing the first pedal 871 to rotate from the second rotation position to the first rotation position, as shown in Figures 1 and 31. This causes the push rib 8712b on the first pedal 871 to switch from engaging with the positioning groove 883 of the brake push member 880 to engaging with the brake groove 882. Simultaneously, the brake push member 880 moves towards the wheel body 440 under the elastic force of the third reset member 890, as shown in Figure 40. At the same time, the brake push member 880 drives the brake lever 860 connected to it to move from the third release position to the third lock position. The brake lever 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.

[0196] The aforementioned infant and toddler vehicles have at least the following technical effects:

[0197] In this infant carrier, the seat element 100 is installed on the frame 200. The frame 200 can be switched between the unfolded state and the folded state through the switching mechanism 600, thereby realizing the conversion between the use modes of the infant carrier such as infant stroller and car safety seat. The structure is simple and the operation is convenient.

[0198] As shown in Figures 44 to 47, another embodiment of the present invention provides an infant carrier, which may include a support body 110, a moving element 900, and a frame 200. When switching usage modes, the moving element 900 of this infant carrier has a simple and easy-to-operate switching structure.

[0199] As shown in Figure 48, the support body 110 has a support cavity 114 for supporting an infant, and the two ends of the support body 110 in the longitudinal direction are a headrest 115 and a leg rest 116, respectively. The moving element 900 is generally U-shaped and includes a handle body 980 and two handle rods 990 connected to both ends of the handle body 980. The ends of the two handle rods 990 away from the handle body 980 are pivotally connected to both sides of the support body 110 in the lateral direction and are retractable. The pivot points of the two handle rods 990 and the support body 110 are located between the headrest 115 and the leg rest 116.

[0200] As shown in Figure 48, the frame 200 is pivotally connected to the support body 110. The pivot point between the frame 200 and the support 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 leg rest 116 of the support body 110, and the fourth position N is close to the head rest 115 of the support body 110. The frame 200 specifically includes a first support frame 230 and a second support frame 240 that are pivotally connected to each other. Both the first support frame 230 and the second support frame 240 are generally inverted U-shaped frame structures. The two upper ends of the first support frame 230 are pivotally connected to the two upper ends of the second support frame 240, respectively, and are pivotally connected to the support body 110. Wheel elements 400 are connected to the two lower ends of the first support frame 230 and the two lower ends of the second support frame 240, respectively.

[0201] Furthermore, the frame 200 can be switched between an extended state and a retracted state. As shown in Figures 44 to 46, when the frame 200 is in the retracted state, the pivot point between the frame 200 and the carrier body 110 is located at the third position M, and the infant carrier can be in rocker mode, infant carrier mode, or car seat mode. When the frame 200 is in the retracted state, the first support frame 230 and the second support frame 240 of the frame 200 overlap with each other, and correspondingly overlap with the wheel elements 400 connected to the first support frame 230 and the second support frame 240. As shown in Figure 47, when the frame 200 is in the extended state, the two lower ends of the first support frame 230 and the two lower ends of the second support frame 240 are far apart, and the pivot point between the frame 200 and the carrier body 110 is located at the fourth position N, and the infant carrier can be in stroller mode.

[0202] As shown in Figure 44, when the frame 200 is in the folded state, and the moving element 900 is in the retracted state and rotated to the position where the handle body 980 is located on the side of the headrest 115 away from the leg rest 116, i.e., behind the headrest 115, the infant carrier is in rocker mode. At this time, the moving element 900 is not extendable but can pivot relative to the support body 110. As shown in Figure 45, when the frame 200 is in the folded state, and the moving element 900 is in the retracted state and rotated to a vertically upward position, the infant carrier is in carrier mode. At this time, the moving element 900 is also not extendable but can pivot relative to the support body 110. As shown in Figure 46, when the frame 200 is in the folded state, and the moving element 900 is in the retracted state and rotated to the position where the handle body 980 is located on the side of the leg rest 116 away from the headrest 115, i.e., in front of the leg rest 116, the infant carrier is in car seat mode. At this time, the moving element 900 is extendable and can also pivot relative to the support body 110. At this time, the movable element 900 can be used as a push rod for a car safety seat. A pivotable ISOFIX connector 360 can be installed on the carrier body 110. When the infant vehicle is in car safety seat mode, the ISOFIX connector 360 can extend to secure it to the car seat. When the infant vehicle is in other usage modes, the ISOFIX connector 360 can retract to avoid unnecessary obstruction. As shown in Figure 47, when the frame 200 is in the extended state, the pivot point between the frame 200 and the carrier body 110 is located at the fourth position N, and the infant vehicle is in stroller mode. At this time, the movable element 900 is in the extended state and rotated until the handle body 980 is located on the side of the leg rest 116 away from the headrest 115, i.e., in front of the leg rest 116. At this time, the movable element 900 can be used as a push rod for the stroller. The movable element 900 is retractable but cannot pivot relative to the carrier body 110.

[0203] As shown in Figures 49 to 52, the infant carrier further includes 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 adjusts the extension and retraction of the moving element 900, allowing the moving element 900 to switch between an extended state and a retracted state. When the moving element 900 is in the retracted state and can rotate relative to the support body 110, the first limiting mechanism C00 locks the length adjustment mechanism 960 to limit the extension and retraction of the moving element 900. When the moving element 900 rotates to a preset angle, the first limiting mechanism C00 releases the lock on the length adjustment mechanism 960, allowing the moving element 900 to switch between the extended and retracted states. The angle adjustment mechanism 500 adjusts the pivoting of the moving element 900 relative to the support body 110. When the moving element 900 switches to the extended state, the second limiting mechanism D00 locks the angle adjustment mechanism 500 to limit the pivoting of the moving element 900. When the moving element 900 switches to the retracted state, the second limiting mechanism D00 releases the lock on the angle adjustment mechanism 500, and the moving element 900 can pivot.

[0204] In this embodiment, both handle bars 990 are hollow rod structures. Each handle bar 990 has a length adjustment mechanism 960 and an angle adjustment mechanism 500 within its hollow cavity. A first limiting mechanism C00 and a second limiting mechanism D00 are provided between each handle bar 990 and both sides of the supporting body 110 in the lateral direction. The structure and function of one handle bar 990, its length adjustment mechanism 960, its angle adjustment mechanism 500, its first limiting mechanism C00, and its second limiting mechanism D00 are described in detail below using one side as an example.

[0205] Specifically, as shown in Figures 49 to 52, the handle 990 includes a first handle 991 and a second handle 992 sleeved on the first handle 991. The first handle 991 is slidable relative to the second handle 992. One of the first handle 991 and the second handle 992 is provided with at least one first stop 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 stop holes 9921. In this embodiment, the first handle 991 is provided with one first stop hole 9911, and the second handle 992 is provided with multiple second stop holes 9921 at different heights, that is, the second handle 992 is provided with multiple second stop holes 9921 at intervals along its length extension direction. In this embodiment, at least part of the first handle 991 is located above the second handle 992. The moving element 900 also includes an adjusting slider 993, which is sleeved on the first handle 991 and slidable along the first handle 991. As shown in Figures 52 and 53, the end of the second handle 992 furthest from the first handle 991, i.e., the lower end of the second handle 992, is connected to a handle joint 994 for pivotal connection with the support body 110. In this embodiment, the lower end of the second handle 992 is inserted into the connecting sleeve 9943 (described later) of the handle joint 994.

[0206] As shown in Figures 49 to 51, the length adjustment mechanism 960 is located in the hollow cavity of the first handle 991 and specifically includes a length adjustment handle 966, a drive block 967, a positioning block 968, and a length reset component 969 (see Figure 56).

[0207] As shown in Figure 49, the length adjustment handle 966 is roughly in the shape of a long rod and is located in the hollow cavity of the first handle 991. One end of the length adjustment handle 966 is connected to the adjustment slider 993, and the other end of the length adjustment handle 966 is a slider 9661 and is connected to the drive block 967.

[0208] As shown in Figures 49 and 50, the drive block 967 has a mounting groove 9671 extending along the length direction (i.e., the first direction D1) of the length adjustment handle 966. The sliding block 9661 is at least partially fitted around the drive block 967 and can move along the mounting groove 9671. The drive block 967 is fixed in the hollow cavity of the first handle 991 and is generally rectangular in shape. The drive block 967 has a through groove 9672 that penetrates two sides of the drive block 967 along the second direction D2. Alternatively, the through groove 9672 may penetrate only one side of the drive block 967 along the second direction D2. In this embodiment, the second direction D2 is approximately perpendicular to the first direction D1. At least one of the other two sides of the drive block 967 has a first guide groove 9673 that communicates 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 connected to 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, but is not perpendicular to them.

[0209] As shown in Figures 49 and 50, a positioning block 968 is movably disposed on a driving block 967. The positioning block 968 is used to position the moving element 900 in an extended or retracted state. Specifically, the positioning block 968 is movably disposed in a through groove 9672 of the driving block 967, and the positioning block 968 has a positioning end 9681. A first sliding pin 9682 protrudes from one or both sides of the positioning block 968, and the first sliding pin 9682 passes through a first guide groove 9673 and a second sliding groove 9661a.

[0210] Please refer to Figure 56. The length reset member 969 is used to bias the length adjustment handle 966 so that the length adjustment handle 966 drives the positioning block 968 to move in the direction of extending out of the through groove 9672. In this embodiment, the length reset member 969 is a spring. Specifically, the drive block 967 is provided with a reset groove 9675, and the upper side wall of the reset groove 9675 is provided with a first sleeve post 9676. The sliding block 9661 of the length adjustment handle 966 has a second sleeve post 9661b extending into the reset groove 9675. The second sleeve post 9661b is located below the first sleeve post 9676, that is, the first sleeve post 9676 is located on the first direction D1 of the second sleeve post 9661b. The length reset member 969 is disposed in the reset groove 9675, and the two ends of the length reset member 969 are respectively sleeved on the first sleeve post 9676 and the second sleeve post 9661b, and the two ends of the length reset member 969 abut against the driving block 967 and the sliding block 9661 respectively.

[0211] As shown in Figures 49, 50, and 56, the positioning block 968 can extend out of the through slot 9672 and be inserted into a first stop hole 9911 and a second stop hole 9921, so that the first handle 991 and the second handle 992 are relatively fixed, thereby positioning the moving element 900 in an extended state, a retracted state, or a state between the extended and retracted states, that is, positioning the moving element 900 at a certain height. When the adjusting slider 993 is operated and moves along the first direction D1, the adjusting slider 993 drives the length adjusting handle 966 to move along the first direction D1, and the first sliding pin 9682 slides in the first guide groove 9673 and the second sliding groove 9661a, while simultaneously driving the positioning block 968 to move along the second direction D2 and retract into the through slot 9672, so as to disengage the positioning of the moving element 900. 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 slides relative to the second handle 992 to the desired position, the external force applied to the adjusting slider 993 can be removed. Then, 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 reset member 969. The first sliding pin 9682 slides in the first guide groove 9673 and the second sliding groove 9661a, and at the same time drives the positioning block 968 to move in the opposite direction of the second direction D2 to extend out of the through groove 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, so that the first handle 991 and the second handle 992 are relatively fixed, and the moving element 900 is positioned at another height position.

[0212] Specifically, as shown in Figures 44, 45 and 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.

[0213] As shown in Figures 51 and 52, the driving block 967 has a limiting groove 9674 on the side facing the supporting body 110. In this embodiment, the limiting groove 9674 extends approximately along the fourth direction D4 and is located below the first guide groove 9673. In this embodiment, the fourth direction D4 is perpendicular to both the first direction D1 and the second direction D2. The fourth locking member C10 can be selectively locked to the length adjustment mechanism 960 or released from 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 supporting body 110. The fourth locking member C10 is movably disposed 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 this embodiment, the fourth locking member C10 is a limiting post, which has a locking end C11 and an abutment end C12. The locking end C11 can be selectively locked in the limiting groove 9674 to lock or unlock the length adjusting mechanism 960. The abutting end C12 is provided with a travel groove C121 extending along the fourth direction D4. One end of the limiting pin C40 is connected to the mounting member 9942, and the other end is inserted into the travel groove C121. By setting the limiting pin C40 and the travel groove C121, the sliding travel of the abutting end C12 or the fourth locking member C10 can be limited.

[0214] Further, as shown in Figures 44, 45, and 52, at least a portion of the first driving member C20 can drive the fourth locking member C10 to move and lock onto the length adjustment mechanism 960. The fourth locking member C10 can cooperate with the restriction release part C21 to release the lock on the length adjustment mechanism 960. Specifically, the first driving member C20 is a push rib provided on the support body 110 and protruding towards the moving element 900. In this embodiment, the push rib is an arc-shaped rib, and the arc direction of the arc-shaped rib is consistent with the arc direction of the pivot of the moving element 900. The first driving member C20 has a restriction release part C21. In this embodiment, the restriction release part C21 is a release groove provided at one end of the push rib near the leg rest 116.

[0215] As shown in Figure 52, when the moving element 900 rotates relative to the supporting body 110, the first driving member C20 drives the fourth locking member C10 to move in the lateral direction of the supporting body 110, i.e., the fourth direction D4, and locks it to the length adjustment mechanism 960. Specifically, when the moving element 900 rotates relative to the supporting body 110, the pushing rib pushes against the abutting end C12, thereby driving the locking end C11 to move toward the limiting groove 9674 and insert into the limiting groove 9674 to lock it to the length adjustment mechanism 960. As shown in Figures 44, 45 and 54, when the moving element 900 rotates to a preset angle, the abutting end C12 is located in the limiting release part C21, the locking end C11 disengages from the limiting groove 9674, the locking of the length adjustment mechanism 960 is released, and the moving element 900 can switch between the retracted state and the extended state.

[0216] In this embodiment, as shown in FIG52, the first elastic element C30 is a spring that biases the fourth locking element C10 in the opposite direction of the fourth direction D4. Specifically, the first elastic element C30 is sleeved on the locking end C11 of the fourth locking element C10, and its two ends abut against the abutting end C12 of the first limiting element and the outer wall of the first handle 991, respectively. When the moving element 900 rotates to a preset angle, the elastic restoring force of the first elastic element C30 drives the locking end C11 to move and disengage from the limiting groove 9674, so that the abutting end C12 is accommodated in the limiting release part C21, the locking of the length adjustment mechanism 960 is released, and the moving element 900 can switch between the retracted state and the extended state.

[0217] Thus, as shown in Figures 44, 45, and 52, when the infant carrier is in rocking chair mode or carrier mode, because the moving element 900 rotates to the position where the handle body 980 is located on the side of the headrest 115 away from the leg rest 116, or when the moving element 900 is in a vertically upward state, the first driving member C20 pushes against the abutting end C12 of the fourth locking member C10, causing the locking end C11 of the first driving member C20 to be 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 element 900 cannot be extended or retracted. This design facilitates the movement of the infant carrier, especially when the infant carrier is in carrier mode. It not only makes it easy to carry the carrier but also avoids the risk of the moving element 900 accidentally extending due to misoperation, such as causing the baby to fall, greatly improving safety performance.

[0218] As shown in Figures 46, 47, and 54, when the infant vehicle is in car seat mode or stroller mode, the moving element 900 rotates to the side of the handle body 980 located away from the headrest 115 on the leg rest 116, i.e., the moving element 900 rotates to the preset angle mentioned above. The fourth locking member C10 is opposite to the restriction release part 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 and disengage from the limiting groove 9674, so that the abutment end C12 is accommodated in the restriction release part C21. The lock of the length adjustment mechanism 960 is released, and the moving element 900 can switch between the retracted state and the extended state. Thus, when the infant vehicle is in car seat mode or stroller mode, the length of its moving element 900 can be adjusted as needed.

[0219] Specifically, as shown in Figures 55 to 58, the angle adjustment mechanism 500 includes a pivot button 560, an angle locking member 570, and an angle reset member 580.

[0220] As shown in Figures 50 and 51, the pivot button 560 includes a generally circular, sheet-like button body 561 and four button protrusions 562 protruding from one side of the button body 561. The four button protrusions 562 are evenly distributed around the circumference of the button body 561. Of course, in other embodiments, the number and position of the button protrusions 562 can be adjusted as needed. The pivot button 560 can move along the fourth direction D4 or the opposite direction of the fourth direction D4.

[0221] Specifically, as shown in Figures 53 and 56, the joint body 8841 of the handle joint 994 is generally disc-shaped. The side of the joint body 8841 facing away from the support body 110 has a button mounting groove 8841a for mounting the pivot button 560. The bottom of the groove 8841a has four through holes 9941b, the positions of which correspond to the four button protrusions 562. The button body 561 is movably disposed within the button mounting groove 8841a, and the four button protrusions 562 can pass through the four through holes 9941b respectively. Each of the four button protrusions 562 has a limiting hook 5621 at its end away from the button body 561. The limiting hook 5621 abuts against the side of the joint body 8841 facing the support body 110 to prevent the pivot button 560 from falling off the handle joint 994. As shown in Figure 53, the joint body 8841 has a first receiving groove 9941c on the side facing the bearing body 110. In this embodiment, the first receiving groove 9941c is approximately cylindrical. A first pivot shaft 9941d protrudes from the center of the bottom of the first receiving groove 9941c, and at least one arc-shaped angle limiting groove 9941e is provided at the bottom of the first receiving groove 9941c. The groove wall of the first receiving groove 9941c is surrounded by multiple first angle adjustment grooves 9941f and multiple second angle adjustment grooves 9941g. In this embodiment, the first angle adjustment groove 9941f is a toothed groove, and there are multiple toothed grooves that are arranged around the groove wall of the first receiving groove 9941c. The second angle adjustment groove 9941g is approximately a square groove. There are four square grooves evenly distributed circumferentially on the wall of the first receiving groove 9941c. Specifically, the wall of the first receiving groove 9941c located between every two square grooves is approximately an arc-shaped wall with a central angle of 90 degrees. In other embodiments, the shape and number of the first angle adjustment groove 9941f and the second angle adjustment groove 9941g can also be adjusted as needed.

[0222] Further, as shown in Figure 58, a pivot joint 117 is provided on the side of the support body 110. The pivot joint 117 has a second receiving groove 1171, which is a cylindrical groove with a shape approximately the same as the first receiving groove 9941c. A second pivot shaft 1172 protrudes from the center of the bottom of the second receiving groove 1171, and the second pivot shaft 1172 has a pivot groove 11721 extending along its length. The handle joint 994 can be pivotally connected to the support body 110 by inserting its first pivot shaft 9941d into the pivot groove 11721 of the second pivot shaft 1172, and at this time, the first receiving groove 9941c and the second receiving groove 1171 together form a first receiving cavity 101. Angle locking member 570 and angle reset member 580 are both provided in the first receiving cavity 101. The angle locking member 570 is generally cylindrical in shape, and a pivot hole 571 is provided approximately in the middle 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 in FIG59, the groove wall of the second receiving 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 member 570. In this embodiment, the first pivot limiting groove 11711 is a toothed groove, and there are multiple toothed grooves arranged around the groove wall of the first receiving groove 9941c. The second pivot limiting groove 11712 is generally a square groove, and there are two square grooves evenly arranged circumferentially on the groove wall of the first receiving groove 9941c. That is, the groove wall of the first receiving groove 9941c located between the two square grooves is generally an arc-shaped wall with a central angle of 180 degrees. In other embodiments, the shape and number of the first pivoting limiting groove 11711 and the second pivoting limiting groove 11712 can also be adjusted as needed.

[0223] The angle locking member 570 is switchable between a first locked position and a first unlocked position. The outer periphery of the angle locking member 570 is provided with a first angle adjusting protrusion 572 and a second angle adjusting protrusion 574. The shape and number of the first angle adjusting protrusion 572 and the second angle adjusting protrusion 574 correspond to the shape and number of the first pivot limiting groove 11711 and the second pivot limiting groove 11712, respectively. That is, there are multiple first angle adjusting protrusions 572, all of which are toothed protrusions, and two second adjusting protrusions 574, both of which are square protrusions. In this embodiment, at least a portion of the angle locking member 570 is always located in the first receiving groove 9941c, and the first angle adjusting protrusion 572 and the second angle adjusting protrusion 574 of the angle locking member 570 always correspond and cooperate with the first pivot limiting groove 11711 and the second pivot limiting groove 11712 to prevent the angle locking member 570 from pivoting relative to the pivot joint 117, that is, to ensure that the angle locking member 570 always moves along the extension direction of the second pivot shaft 1172.

[0224] As shown in Figures 58 to 60, when the angle locking member 570 is in the first locking position, it is simultaneously located in the first receiving groove 9941c and the second receiving groove 1171. At least one first angle adjusting protrusion 572 can be inserted into any first angle adjusting groove 9941f, and at least one second angle adjusting protrusion 574 can be inserted into any second angle adjusting groove 9941g to fix the handle joint 994 relative to the supporting body 110 at a certain angle. In this embodiment, since there are two second angle adjusting protrusions 574 arranged opposite each other, and four second angle adjusting grooves 9941g are evenly arranged circumferentially on the groove wall of the first receiving groove 9941c, the handle joint 994 has four angular pivot positions relative to the pivot joint 117. Of course, in other embodiments, the number of angular pivot positions of the handle joint 994 relative to the pivot joint 117 can also be changed by adjusting the position and number of the second angle adjusting protrusions 574 and the second angle adjusting grooves 9941g. The angle locking member 570 also has at least one angle limiting protrusion 573 on the side facing away from the supporting body 110. 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 this embodiment, there are two angle limiting protrusions 573 and two angle limiting grooves 9941e. When the angle locking member 570 is in the first unlocking position, the angle locking member 570 is only located in the second receiving groove 1171. The first angle adjusting protrusion 572 of the angle locking member 570 disengages from the corresponding first angle adjusting groove 9941f, and the second angle adjusting protrusion 574 of the angle locking member 570 disengages 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, that is, the tilt angle of the moving element 900 can be adjusted.

[0225] In this embodiment, as shown in Figures 58 to 60, the angle reset member 580 is a spring and is used to bias the angle locking member 570 toward the first locking position. Specifically, the angle reset member 580 can be sleeved on the second pivot shaft 1172, and the two ends of the angle reset member 580 are respectively used to abut against the bottom of the second receiving groove 1171 and the angle locking member 570.

[0226] When it is necessary to adjust the tilt angle of the moving element 900, as shown in Figure 58, the pivot button 560 can be pressed in the fourth direction D4, causing the pivot button 560 to push the angle locking member 570 from the first locked position to the first unlocked position through its button protrusion 562. This causes the angle adjusting protrusion 622 of the angle locking member 570 to disengage from the angle adjusting groove 2241f, and the angle adjusting mechanism 500 is unlocked. At this time, the moving element 900 can be rotated, causing the handle joint 994 to rotate relative to the pivot joint 117 to the desired angle position. Afterward, the pressing force applied to the pivot button 560 can be removed, causing the angle locking member 570 to move in the opposite direction of the fourth direction D4 to the first locked position under the elastic restoring force of the angle reset member 580. Each angle adjusting protrusion 622 is re-inserted into the new angle adjusting groove 2241f, that is, the moving element 900 is locked at the desired angle position. In this embodiment, the angle adjusting groove 2241f is a toothed groove, and the angle locking member 570 is a gear-shaped structure.

[0227] Specifically, as shown in Figures 61 to 63, the second limiting mechanism D00 is disposed 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.

[0228] As shown in Figures 61 to 63, the second driving member D10 is generally rod-shaped, and its approximately central portion is pivotally connected to the cavity wall of the hollow inner cavity of the second handle 992, forming a seesaw-like structure. The second driving member D10 has a first connecting end D11 on one side of the pivot point and a sleeve protrusion D12 on the other side of the pivot point. The fifth locking member D20 is generally rod-shaped and has a holding end D21 that engages with the first connecting end D11 of the second driving member D10 and a stop end D22 that prevents the angle adjustment mechanism 500 from pivoting. Specifically, the first connecting end D11 of the second driving member D10 has a latching hole D111, and the holding end D21 of the fifth locking member D20 has a hook D211, which engages with the latching hole D111. When the second driving member D10 pivots, it can move the fifth locking member D20 between the second locked position and the second unlocked position. When the second driving member D10 moves to the second locking position, as shown in Figure 63, the stop end D22 moves into 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 mechanism 500 to adjust the angle of the moving element 900. As shown in Figure 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, the pivot button 560 can be pressed, the locking of the angle adjustment mechanism 500 is released, and the tilt angle of the moving element 900 can be adjusted.

[0229] In this embodiment, as shown in Figures 62 and 63, the fourth reset member D30 is a spring. The fourth reset member D30 is used to bias the second driving member D10 to pivot, causing the fifth locking member D20 to move to the second locking position. Specifically, a fixing seat 995 is fixed in the hollow cavity of the second handle 992. One end of the fourth reset member D30 is sleeved on the sleeve protrusion D12 of the second driving member D10 and abuts against at least part of the second driving member D10. The other end of the fourth reset member D30 is fixed to the fixing seat 995. The fixing 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.

[0230] Further, as shown in Figures 51 and 61, the second driving member D10 can selectively abut or disengage from the length adjustment mechanism 960. Specifically, as shown in Figure 51, when the moving element 900 is in the retracted state, the first handle 991 moves relative to the second handle 992 in the opposite direction of the first direction D1 until the driving block 967 abuts against the second driving member D10. The second driving member D10 then pivots in the fifth direction D5, causing the fifth locking member D20 to move in the first direction D1, thus moving the fifth locking member D20 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 adjustment mechanism 500 is released, and the tilt angle of the moving element 900 can be adjusted. As shown in Figure 61, when the moving element 900 is adjusted to the non-retracted state, that is, when the moving element 900 is in the extended state or in a state between the extended and retracted states, the drive block 967 in the first handle 991 no longer abuts against the second drive member D10. Then, under the elastic restoring force of the fourth reset member D30, the second drive member D10 pivots in the opposite direction of the fifth direction D5, 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, blocking the pressing of the pivot button 560. The locking angle adjustment mechanism 500 adjusts the angle of the moving element 900, and the moving element 900 cannot rotate relative to the supporting body 110.

[0231] As shown in Figures 47 and 61 to 63, when the infant carrier is in stroller mode, since the moving element 900 is generally in an extended state or between an extended and retracted state, the drive block 967 in the first handle 991 does not abut against the second drive member D10. This allows the second drive member D10 to pivot under the elastic force of the fourth reset member D30, placing the fifth locking member D20 in the second locked position. The stop end D22 of the fifth locking member D20 is inserted into the pressing path of the pivot button 560, thus blocking the pressing of the pivot button 560. The locking angle adjustment mechanism 500 adjusts the angle of the moving element 900, preventing the moving element 900 from rotating relative to the supporting body 110. This ensures that the tilt angle of the moving element 900 will not accidentally pivot due to misoperation while the user is pushing the stroller, facilitating the pushing of the stroller while avoiding safety hazards.

[0232] As shown in Figures 44 to 46, and Figures 50 and 51, when the infant vehicle is in rocking chair mode, infant carrier mode, or car seat mode, the moving element 900 is generally in a retracted state. At this time, the drive block 967 in the first handle 991 abuts against the second drive member D10, causing the second drive member D10 to pivot to place the fifth locking member D20 in the second unlocking position. The fifth locking member D20 exits the pressing path of the pivot button 560, allowing the pivot button 560 to be pressed. This releases the lock on the angle adjustment mechanism 500, allowing the tilt angle of the moving element 900 to be adjusted. Thus, when the infant vehicle is in rocking chair mode, infant carrier mode, or car seat mode, the tilt angle of the moving element 900 relative to the carrier body 110 can be adjusted as needed.

[0233] It should be noted that in other embodiments, the infant carrier of this application may also include only one of the first restricting mechanism C00 and the second restricting mechanism D00.

[0234] The aforementioned infant and toddler vehicles have at least the following technical effects:

[0235] In the aforementioned infant carrier, the movable element 900 is pivotally connected to the carrier body 110 and is extendable. The movable element 900 is equipped with a length adjustment mechanism 960 and an angle adjustment mechanism 500. When the movable element 900 is in a retracted state and can rotate relative to the carrier body 110, the first limiting mechanism C00 can lock the length adjustment mechanism 960 to restrict the retraction of the movable element 900. Thus, when the infant carrier is in rocker or carrier mode, the movable element 900 cannot extend. This not only facilitates carrying the carrier but also prevents accidental extension of the movable element 900, which could lead to safety hazards such as the infant falling off the carrier body 110. When the movable element 900 rotates to a preset angle, the first limiting mechanism C00 releases the lock on the length adjustment mechanism 960, allowing the movable element 900 to switch between an extended and retracted state. This allows the length of the movable element 900 to be adjusted as needed when the infant carrier is in stroller or car seat mode. When the movable element 900 is switched to the extended state, the second limiting mechanism D00 locks the angle adjustment mechanism 500 to restrict the pivoting of the movable element 900. This ensures that when the infant carrier is in stroller mode, the movable element 900 cannot pivot, and the tilt angle of the stroller's movable element 900 is fixed, facilitating user movement. When the movable element 900 is switched to the retracted state, the second limiting mechanism D00 releases the lock on the angle adjustment mechanism 500, allowing the movable element 900 to pivot. This allows the infant carrier to pivot to the desired angle when in rocker, carrier, or car seat mode. The aforementioned switching structure of the movable element 900 is simple and easy to operate.

[0236] According to another embodiment of the present invention, an infant carrier is provided. As shown in FIG. 64, the infant carrier includes a seat element 100, a frame 200, and a base 300. The frame 200 is switchable between an unfolded state and a folded state, and is connected to the seat element 100. The base 300 is connected to the frame 200 and can move as the frame 200 unfolds and folds. When the frame 200 is in the unfolded state, the infant carrier is suitable for use as a stroller, and when the frame 200 is in the folded state, the infant carrier is suitable for use as a car seat. The infant carrier can be placed directly on a vehicle seat and secured to the vehicle seat by at least one of a seat belt and ISOFIX. The base 300 is adapted to move closer to the seat element 100 when the frame 200 switches from the unfolded state to the folded state. Specifically, the angle between the seat element 100 and the base 300 remains constant when the frame 200 switches between the unfolded and folded states. More specifically, when the frame 200 switches between the unfolded and folded states, the seat element 100 maintains a constant angle parallel to the ground, ensuring a smooth transition for the infant carrier. Even without removing the infant from the stroller, the transition from stroller mode to car seat mode is safe and convenient. This embodiment of the infant carrier allows for switching between stroller and car seat modes through the unfolding and folding of the frame 200. Its structure is simple, stable, and easy to operate. Furthermore, this infant carrier minimizes the space occupied when used as a car seat, making it easy to carry and install.

[0237] In one embodiment, as shown in Figures 64 to 67, the frame 200 includes a rear support 210 and a front support 220. The rear support 210 includes an upper rear support leg 211, a lower rear support leg 212, and a first connecting rod 213. The upper rear support leg 211 is pivotally connected to the seat element 100, and the pivot point between the two is a fourth pivot point P4. The upper rear support leg 211 and the lower rear support leg 212 are pivotally connected, and the pivot point between the two is a fifth pivot point P5. The upper rear support leg 211 includes a first upper rear support leg 211a and a second upper rear support leg 211b, which are pivotally connected to both sides of the seat element 100, respectively. The lower rear support leg 212 includes a first lower rear support leg 212a and a second lower rear support leg 212b. The first lower rear support leg 212a is pivotally connected to the first upper rear support leg 211a, and the second lower rear support leg 212b is pivotally connected to the second upper rear support leg 211b. The two ends of the first connecting rod 213 are respectively connected to the first lower rear support leg 212a and the second lower rear support leg 212b. The base 300 is pivotally connected to the lower rear support leg 212 via the first connecting rod 213, and the pivot connection point between the base 300 and the lower rear support leg 212 is the sixth pivot point P6. Specifically, the first connecting rod 213 is fixedly connected to the first lower rear support leg 212a and the second lower rear support leg 212b. At least a portion of the base 300 is located between the first lower rear support leg 212a and the second lower rear support leg 212b. A first connecting rod 213 is arranged to pass through this portion of the base 300, and the base 300 is pivotally connected to the first connecting rod 213. In this embodiment, when the frame 200 is in the unfolded state, the fifth pivot point P5 is offset from the line connecting the fourth pivot point P4 and the sixth pivot point P6. In the vertical direction, the fifth pivot point P5 is located between the fourth pivot point P4 and the sixth pivot point P6, thereby making the distance between the end of the lower rear support leg 212 away from the fifth pivot point P5 and the upper rear support leg 211 smaller when the frame 200 is in the retracted state. When the frame 200 is in the retracted 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 orientation-related terms "up", "down", "left", "right", "front", "back", "vertical", and "horizontal" used in this embodiment refer to the infant carrier used as a stroller in Figure 64.

[0238] As shown in Figures 64 to 67, the front support 220 includes an upper front support leg 221 and a lower front support leg 222. The upper front support leg 221 is pivotally connected to the upper rear support leg 211, and their pivot point is the seventh pivot point P7. 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 support leg 221 and the lower front support leg 222 are pivotally connected, and their pivot point is the eighth pivot point P8. The lower front support leg 222 is pivotally connected to the base 300, and their pivot point is the ninth pivot point P9. The upper front support leg 221 includes a first upper front support leg 221a and a second upper front support leg 221b, and the lower front support leg 222 includes a first lower front support leg 222a and a second lower front support leg 222b. The two ends of the first upper front support leg 221a are pivotally connected to the first upper rear support leg 211a and the first lower front support leg 222a, respectively. The two ends of the second upper front support leg 221b are pivotally connected to the second upper rear support leg 211b and the second lower front support leg 222b, respectively. The front support 220 also includes a second connecting rod 223, the two ends of which are connected to the first lower front support leg 222a and the second lower front support leg 222b, respectively. The base 300 is pivotally connected to the second connecting rod 223. More specifically, a pivot joint 224 is provided in the middle of the second connecting rod 223, and the base 300 is pivotally connected to the pivot joint 224. When the frame 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 200 is in the retracted state, in the horizontal direction, the ninth pivot point P9 is located between the eighth pivot point P8 and the seventh pivot point P7.

[0239] Referring to Figures 65 to 67, during the transition of the frame 200 from the unfolded state to the folded state, the upper front support leg 221 and the upper rear support leg 211 pivot outwards relative to each other, i.e., the eighth pivot point P8 and the fifth pivot point P5 move away from each other; the lower front support leg 222 and the lower rear support leg 212 fold inwards, i.e., the end of the lower front support leg 222 that is away from the eighth pivot point P8 and the end of the lower rear support leg 212 that is away from the fifth pivot point P5 move closer to each other. The process of the frame 200 transitioning from the folded state to the unfolded state is exactly the opposite of the process of the frame 200 transitioning from the unfolded state to the folded state described above. In this embodiment, any one or more of the lower front support leg 222, lower rear support leg 212, upper front support leg 221, or upper rear support leg 211 can drive the other components to pivot simultaneously when subjected to external force, thereby realizing the switching of the frame 200 between the unfolded state and the retracted state through the linkage of multiple components.

[0240] In this embodiment, referring to Figures 65 to 67, the lower front support leg 222 includes a first connecting section 2221 and a second connecting section 2222. The first connecting section 2221 and the second connecting section 2222 are set at an angle, so that when the frame 200 is in the folded state, the end of the second connecting section 2222 can be closer to the upper front support leg 221, thereby reducing the overall volume of the infant carrier when used as a car seat, so as to facilitate carrying and installation.

[0241] In one embodiment, as shown in Figures 64 to 67, the infant carrier further includes multiple wheel elements 400, which are respectively connected to the frame 200. The multiple wheel elements 400 include two front wheel elements 420 and two rear wheel elements 410. The two rear wheel elements 410 are respectively connected to two lower rear support legs 212, and the two front wheel elements 420 are respectively connected to two lower front support legs 222. The multiple wheel elements 400 include wheels 411 and 421 and mudguards 412, which are pivotally connected to the lower rear support legs 212 and the lower front support legs 222, respectively. When the frame 200 is in the folded state, the lowest point of each of the multiple wheels 411 and 421 is higher than the bottom surface of the base 300. Thus, when the infant vehicle is used as a car seat, the bottom surface of the base 300 can directly contact the vehicle seat, allowing the car seat to be placed more stably on the vehicle seat, while also preventing the wheels 411 and 421 from soiling the vehicle seat. In this embodiment, the bottom surface 319 of the base 300 is generally flat (see Figure 68) to facilitate the stable placement of the base 300 on the vehicle seat, increasing the safety of the infant vehicle when used as a car seat. The mudguard 412 is arc-shaped and is arranged around a portion of the outer periphery of the wheels 411 and 421, and is spaced apart from the wheels 411 and 421. The rear wheel element 410 also includes a mudguard connector 413, through which the mudguard 412 is connected to the lower rear support leg 212. In this embodiment, the mudguard 412 and the mudguard connector 413 are integrally formed. In other embodiments, the mudguard 412 and the mudguard connector 413 can be separate components. Furthermore, the mudguard 412 in the front wheel element 420 can be directly connected to the lower front outrigger 222. When the frame 200 is in the retracted state, the mudguard 412 is located below the wheel 411, and the lowest point of the mudguard 412 is equal to or higher than the bottom surface of the base 300. Thus, when an infant carrier used as a safety seat is installed on a vehicle seat, the mudguard 412 can separate the wheel 411 from the surface of the seat, thereby preventing the wheel 411 from directly contacting the vehicle seat and preventing the wheel 411 from soiling the vehicle seat.

[0242] In one embodiment, as shown in Figures 64, 68, and 69, the seat element 100 includes a seat 110, which includes a seat body 111 and a seat housing 112. The seat body 111 and the seat housing 112 enclose a first receiving cavity 113. The seat housing 112 includes a first seat housing 1121 and a second seat housing 1122, which is connected to either the first seat housing 1121 or the seat body 111.

[0243] Referring again to Figures 64, 68, and 69, the seat element 100 further includes a seatbelt positioning device 130, which has a seatbelt slot 131. When the infant vehicle is in car seat mode, the seatbelt at the vehicle seat is adapted to pass through the seatbelt slot 131 to secure the infant vehicle (car seat) to the vehicle seat. The seatbelt slot 131 includes at least two slots, which are respectively located on one side of the left and right sides and the front side of the seat 110. In this embodiment, three seatbelt slots 131 are provided, located on the left and right sides and the front side of the seat 110. The seatbelt passes through the left or right seatbelt slot 131 and the front seatbelt slot 131 to secure the infant vehicle (car seat) to the vehicle seat. The seatbelt positioning device 130 conveniently and securely secures the infant vehicle to the vehicle seat.

[0244] In one embodiment, as shown in Figures 68 and 69, the infant carrier further includes an unfolding locking mechanism 5A. In this embodiment, at least a portion of the unfolding locking mechanism 5A is housed within a first receiving cavity 113. There are two sets of the unfolding locking mechanism 5A, each set disposed on one side of the seat element 100. In other embodiments, the unfolding locking mechanism 5A may be disposed only on one side of the seat element 100; this application does not limit this. For ease of description, the following description uses an unfolding locking mechanism 5A located on one side of the seat element 100 as an example.

[0245] Referring to Figures 69 and 71, the unfolding locking mechanism 5A includes a first sliding pin 5A1, a first stop 5A2, a first connecting member 5A3, and an elastic member 5A4. One end of the first connecting member 5A3 is fixedly connected to the upper front support leg 221, and the other end is accommodated in the first receiving cavity 113 and connected to the first sliding pin 5A1. The first sliding pin 5A1 is fixedly connected to the upper front support leg 221 via the first connecting member 5A3 and is slidably disposed on the seat element 100. Specifically, the first sliding pin 5A1 is slidably accommodated in the first receiving cavity 113. When the first sliding pin 5A1 slides relative to the seat element 100, it can drive the upper front support leg 221 to pivot relative to the upper rear support leg 211 via the first connecting member 5A3, thereby switching the frame 200 between the unfolded state and the folded state. In this embodiment, the connecting piece 120 is accommodated in the first receiving cavity 113 and connected to the seat body 111. The connecting piece 120 is provided with a strip groove 121, and the first sliding pin 5A1 is inserted into the strip groove 121 and can slide along the strip groove 121. In other embodiments, the strip groove 121 can also be provided on the seat body 111, and the first sliding pin 5A1 is inserted into the strip groove 121 and can slide along the strip groove 121.

[0246] Furthermore, the first stop 5A2 is pivotally connected to the seat element 100. Specifically, the first stop 5A2 is housed within the first receiving cavity 113 and is pivotally connected to the seat body 111. The first stop 5A2 has a first stop hook 5A21 adapted to engage with a first sliding pin 5A1 to prevent the sliding pin 5A1 from sliding relative to the seat element 100, thereby suppressing the pivoting of the upper front support leg 221 relative to the seat element 100 and locking the frame 200 in the deployed state, i.e., the deployment locking mechanism 5A is in the locked state. The deployment locking mechanism elastic element 5A4 is housed within the first receiving cavity 113 and disposed between the first stop 5A2 and the seat body 111. The deployment locking mechanism elastic element 5A4 includes a torsion spring. The elastic element 5A4 of the unfolding locking mechanism is adapted to bias the first stop 5A2 to pivot toward the first sliding pin 5A1, so that the hook portion 5A21 of the first stop engages with the first sliding pin 5A1, thereby locking the frame 200 in the unfolded state and preventing the frame 200 from accidentally closing when the infant carrier is used as a stroller. In this embodiment, referring to Figures 69 and 71, the hook portion 5A21 of the first stop is provided with a first wedge-shaped surface 5A22, which is adapted to be pushed by the first sliding pin 5A1, so that the first sliding pin 5A1 can enter the hook portion 5A21 and engage with it by pushing the first wedge-shaped surface 5A22 without the need for external force to operate the first stop 5A2. Referring to Figures 64 and 68, the second seat housing 1122 is located at the unfolding locking mechanism 5A to facilitate the assembly of the unfolding locking mechanism 5A.

[0247] In one embodiment, as shown in Figures 68, 70, and 72, the infant carrier further includes an unfolding locking and releasing mechanism 5B. This mechanism 5B 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 and releasing 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 element 100 via two first traction members (not shown in the figures). The first operating member 5B1 is operably disposed on the seat element 100. 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. Referring to Figure 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. Referring to Figure 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.

[0248] In this embodiment, the first traction member (not shown in the attached 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 attached drawings) is housed in the first receiving cavity 113, making the appearance of the infant carrier more concise.

[0249] In one embodiment, as shown in Figures 75 to 77, the base 300 includes a base body 310 and a base support 320. The base body 310 includes a first housing 311 and a second housing 312, which together form a fourth receiving cavity 318. The base support 320 is received within the fourth receiving cavity 318 and connected to the first housing 311.

[0250] Referring to Figures 74 to 77, the infant carrier also includes a folding and locking mechanism 6A, which is adapted to lock the frame 200 in a folded state. The folding and locking mechanism 6A includes a fixing rod 6A1, a locking member 6A2, a folding and locking mechanism elastic member 6A3, and a fixing member 6A4. The fixing rod 6A1 is connected to the seat element 100, specifically, it is connected to the seat housing 112. The seat housing 112 has a second recess 1125, and the fixing rod 6A1 is disposed at the second recess 1125.

[0251] As shown in Figures 75 to 77, the locking member 6A2 is pivotally connected to the base 300, and the locking member 6A2 has a locking hook 6A23. The locking hook 6A23 is adapted to engage with the fixing rod 6A1 (see Figure 74) to lock the frame 200 in a retracted 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. The two ends of the second connecting member 6A21 are connected to the fourth locking member 6A2a and the fifth locking member 6A2b, respectively. The second connecting member 6A21 is plate-shaped to increase the installation area. The fourth locking member 6A2a and the fifth locking member 6A2b have the same structure. The fourth locking member 6A2a will be described as an 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 is connected to the locking member hook portion 6A23, and the second connecting member 6A21 is connected to the locking member connecting portion 6A22. A second opening 313 is provided on the second housing 312, and the second opening 313 is disposed through the second housing 312. In this embodiment, the second opening 313 is strip-shaped, and there are two second openings 313, which are respectively for the fourth locking member 6A2a and the fifth locking member 6A2b to pass through. 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. A locking member pivot shaft 340 is provided on the base body 310. Specifically, the locking member pivot shaft 340 is fixedly connected to the first housing 311 and accommodated in the fourth receiving cavity 318. In this embodiment, the locking member pivot shaft 340 is not coaxially arranged with the first connecting rod 213. In other embodiments, the locking pivot 340 may be coaxially arranged with the first link 213. The locking connecting portion 6A22 is pivotally connected to the locking pivot 340 and accommodated within the fourth receiving cavity 318. The locking hook portion 6A23 passes through the second opening 313 and extends out of the fourth receiving cavity 318.

[0252] Referring to Figures 75 and 77, the locking hook portion 6A23 is provided with a second wedge-shaped surface 6A24, which is adapted to be pushed against by the fixing rod 6A1 (see Figure 74). This allows the locking member 6A2 to be engaged with the fixing rod 6A1 when the frame 200 is closed to contact the locking member 6A2, without the need for external force to operate the locking member 6A2. The fixing rod 6A1 can push against the second wedge-shaped surface 6A24 and enter the locking hook portion 6A23 to engage with it.

[0253] As shown in Figures 77 and 78, the fixing member 6A4 is fixedly connected to the pivot shaft 340 of the locking member. The retractable locking mechanism elastic member 6A3 is disposed between the fixing member 6A4 and the locking member 6A2. The retractable locking mechanism elastic member 6A3 is adapted to bias the locking member 6A2 to pivot toward the fixing rod 6A1, so that the hook portion 6A23 of the locking member engages with the fixing rod 6A1. In this embodiment, the retractable locking mechanism elastic member 6A3 is based on a double torsion spring structure. The retractable locking mechanism elastic member 6A3 includes 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 disposed on 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. Thus, the retractable locking mechanism elastic member 6A3 can be easily disassembled and assembled. In other embodiments not shown, the retractable locking mechanism elastic element 6A3 can also be other structures, as long as it can satisfy the biasing of the locking element 6A2 to pivot toward the fixed rod 6A1, so that the locking hook 6A23 engages with the fixed rod 6A1. For example, the retractable locking mechanism elastic element 6A3 is a single torsion spring, which is disposed on the fixed element 6A4 or the locking element pivot shaft 340 and abuts against the locking element 6A2.

[0254] In one embodiment, as shown in Figures 75 and 77, the infant carrier further includes a retraction locking and release mechanism 6B. The retraction locking and release mechanism 6B is adapted to drive the locking member 6A2 to pivot in a direction away from the fixed rod 6A1, thereby releasing the engagement between the locking member hook 6A23 and the fixed rod 6A1 (see Figure 74). The retraction locking and release mechanism 6B includes a second operating member 6B1, which is connected to the locking member 6A2. The second operating member 6B1 is adapted to drive the locking member 6A2 to pivot in a direction away from the fixed rod 6A1 when operated, thereby releasing the engagement between the locking member hook 6A23 and the fixed rod 6A1. The second operating member 6B1 is operably disposed on the base 300. In this embodiment, the second housing 312 has a third recess 314, and a third opening 315 is provided at the third recess 314, the third opening 315 penetrating the second housing 312. One end of the second operating member 6B1 is housed in the fourth receiving cavity 318 and connected to the second connecting member 6A21, while the other end passes through the third opening 315 and extends out of the fourth receiving cavity 318 to facilitate operation of the second operating member 6B1.

[0255] The principle behind the switching of the infant carrier from a stroller to a car seat in this embodiment (i.e., the switching of the infant carrier frame 200 from an unfolded state to a folded state) is as follows:

[0256] As shown in Figures 71 and 72, an external force presses down on 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 figures), 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, i.e., the upper front support leg 221 can pivot. At this time, by pushing the front wheel element 420 or the rear wheel element 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 in Figures 73 and 74. Alternatively, after the first stop hook 5A21 is disengaged 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 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 shown in Figures 74 and 75, the fixing rod 6A1 pushes against the second wedge surface 6A24 and causes the locking member 6A2 to pivot, so that the fixing rod 6A1 enters the locking hook 6A23 of the locking member 6A2 and engages with it, thereby locking the frame 200 in the folded state. At this time, the infant vehicle can be used as a safety seat.

[0257] 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:

[0258] As shown in Figures 75 and 77, an external force presses down on the second operating member 6B1, causing it to move. The second operating member 6B1 drives the locking member 6A2 to pivot, causing the hook 6A23 of the locking member to disengage from the fixing rod 6A1, allowing the seat element 100 to move relative to the base 300. That is, the frame 200 can switch from a folded state to an unfolded state, as shown in Figures 74 to 73. At this time, lifting the seat element 100 and applying force to the front support 220 or the rear support 210 of the frame 200 (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) causes the frame 200 to switch from a folded state to an unfolded state. When the frame 200 is fully extended, as shown in Figure 69, the first sliding pin 5A1 pushes against the first wedge-shaped surface 5A22, causing the first stop 5A2 to pivot, so that the first sliding pin 5A1 enters the hook part 5A21 of the first stop and engages with it, thereby locking the frame 200 in the extended state. At this time, the infant carrier can be used as a stroller.

[0259] In one embodiment, as shown in Figures 75 and 77, the base 300 further includes two slide rods 350, two ISOFIX connectors 360 located on both sides of the base bracket 320, and a connecting rod 370 connected to the two slide rods 350. Both ISOFIX connectors 360 are adapted to be attached to an ISOFIX interface in a vehicle. A portion of each of the two slide rods 350 is accommodated within a fourth receiving cavity 318, with one end of each slide rod 350 connected to one of the two ISOFIX connectors 360 and the other end slidably connected to the base bracket 320. Specifically, the base bracket 320 also includes two sliding sleeves 321 located on opposite sides of the base bracket 320, each of the two sliding sleeves 321 having a third through hole 3211 through which one end of the corresponding slide rod 350 slidably connects to the base bracket 320. The base bracket 320 has two strip-shaped first guide holes 322, through which both ends of the connecting rod 370 pass and connect to the two slide rods 350. The linkage rod 370 can move along the first guide hole 322, thereby enabling the linkage of the two slide rods 350.

[0260] As shown in Figures 77 and 79 to 81, the infant carrier also includes an adjustment device 700, which is adapted to releasably lock the slide bar 350 to the base bracket 320. The adjustment device 700 can be releasably connected to only one slide bar 350 or to both slide bars 350. In this embodiment, the adjustment device 700 is releasably connected to both slide bars 350. The ISOFIX connector 360 is slidably connected to the base body 310 via the two slide bars 350, and the adjustment device 700 releasably locks the slide bar 350 in the desired position, making it very convenient to adjust the relative position between the ISOFIX connector 360 and the base body 310. This allows the ISOFIX connector 360 to be easily moved and fixed in the desired position when the infant carrier is used as a car seat, facilitating the connection between the ISOFIX connector 360 and the ISOFIX interface, and allowing adjustment of the distance between the base 300 and the ISOFIX interface as needed. When the infant carrier is used as a stroller, the ISOFIX connector 360 can be retracted to prevent it from extending too far beyond the frame and colliding with or obstructing the stroller operator.

[0261] Further, as shown in Figures 77, 79 to 81, the adjusting device 700 includes a second stop 710, a third operating member 720, a fixed base 730, and an adjusting device elastic member 740. In this embodiment, two second stopes 710 are provided, and these two second stopes 710 are movably connected to the third operating member 720 respectively. Furthermore, these two second stopes 710 are movably disposed on the base 300 and are adapted to releasably lock the two slide rods 350 to the base bracket 320. Each of the two slide rods 350 is provided with multiple adjusting holes 351. The base bracket 320 is provided with two stop holes 316 at positions corresponding to the two second stopes 710, for the two second stopes 710 to pass through respectively. The two second stops 710 are rod-shaped, with one end of each of the two second stops 710 being received in the fourth receiving cavity 318 and connected to the third operating member 720, and the other end of each of the two second stops 710 being adapted to pass through the corresponding stop hole 316 and be inserted into one of the adjustment holes 351 of the corresponding slide rod 350 to releasably lock the corresponding slide rod 350 to the base bracket 320.

[0262] As shown in Figures 79 to 81, a third operating member 720 is operably disposed on the base 300 and connected to two second stops 710. The third operating member 720 is adapted to drive the two second stops 710 to move synchronously to lock the two slide rods 350 to or release the two slide rods 350 from the base support 320. A portion of the third operating member 720 is accommodated in a fourth receiving cavity 318 and is provided with two first drive slots 721. The other end of each of the second stops 710 is provided with a first drive pin 750, which engages with the corresponding first drive slot 721 and is movable along the first drive slot 721. The first drive slot 721 has a first position and a second position. When the first drive pin 750 is in the first position in the first drive slot 721, the two slide rods 350 are locked to the base support 320, and when the first drive pin 750 is in the second position in the first drive slot 721, the two slide rods 350 are released from the base support 320. In this embodiment, the moving direction D2 of the third operating member 720 forms an angle with the moving direction D3 of the second stop member 710. The extending direction of the first driving groove 721 intersects with and is not perpendicular to the moving direction D3 of the second stop member 710. Referring to Figures 78 and 79, the third operating member 720 has an operating hook 722 located outside the fourth receiving cavity 318 to facilitate operation of the third operating member 720. The third operating member 720 also has a receiving groove 724 located between the two first driving grooves 721. A first protrusion 725 is provided at one end of the receiving groove 724. A second protrusion 317 is correspondingly provided on the base 300, and the second protrusion 317 is received within the fourth receiving cavity 318 and disposed on the first housing 311. The second protrusion 317 is positioned opposite to the first protrusion 725.

[0263] As shown in Figures 78 to 81, the adjusting device elastic element 740 includes a spring, and its two ends are respectively connected to the first protrusion 725 and the second protrusion 317. The adjusting device elastic element 740 is adapted to bias the third operating element 720 so that the third operating element 720 is in its initial position when not operated.

[0264] As shown in Figures 77 and 78, the fixed base 730 is connected to the base 300. The fixed base 730 is provided with a third guide groove 731, which is designed to guide the movement of the second stop 710. The first drive pin 750 is inserted into and movable along the third guide groove 731. The third guide groove 731 guides the second stop 710 to move in a predetermined direction, while also reducing the left-right offset of the third operating member 720 during movement. The end of the third guide groove 731 is adapted to abut against the first drive pin 750 to limit the travel of the second stop 710. Both ends of the fixed base 730 are connected to the base bracket 320. The third operating member 720 is located between the fixed base 730 and the first housing 311, reducing the up-down offset of the third operating member 720 during movement.

[0265] In this embodiment, the position adjustment process of the ISOFIX connector 360 is as follows:

[0266] As shown in Figures 78 and 79, the third operating member 720 is pulled by an external force. The two first driving slots 721 of the third operating member 720 drive the first driving pin 750 to move along the third guide slot 731, causing the first driving pin 750 to move from the first position to the second position of the first driving slot 721. This causes the two second stop members 710 to move towards each other simultaneously, thereby disengaging the two second stop members 710 from the adjustment hole 351, allowing the slide rod 350 to move relative to the base body 310. At this time, moving the slide rod 350 can adjust the position of the ISOFIX connector 360. 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 elastic member 740 of the adjusting device biases the first protrusion 725, so that the third operating member 720 returns to the initial position and drives the first driving pin 750 to move from the second position of the first driving groove 721 to the first position, thereby causing the second stop member 710 to engage with the adjusting hole 351 to lock the slide rod 350 to the base bracket 320.

[0267] In one embodiment, as shown in Figures 82 to 85, the infant vehicle further includes a braking mechanism 800, which is switchable between a locked state and an unlocked state. When the braking mechanism 800 is in the locked state, at least one predetermined wheel 810 among the plurality of wheels cannot rotate, while when the braking 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 disposed on a first lower rear support leg 212a and a second rear wheel 411b disposed on a second lower rear support leg 212b. The predetermined wheel 810 has a plurality of second brake holes 813 circumferentially arranged along its hub 811. Specifically, the hub 811 of the predetermined wheel 810 is provided with a plurality of protrusions 812, and each protrusion 812 has a second brake hole 813 at one end facing the frame 200.

[0268] As shown in Figures 83 to 85, 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 figures), 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 figures), 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.

[0269] 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.

[0270] As shown in Figures 83 to 85, the locking pin 820 is movable between the unlocked position and the locked position. The locking pin 820 has a second connecting end 821 and a locking end 822. The second lower rear support leg 212b includes a first support leg housing 2121 and a second support leg housing 2122, which together form a third receiving cavity 2123. Specifically, for ease of assembly and disassembly, the second support leg housing 2122 is detachably connected to the first support leg housing 2121. The second connecting end 821 is received within and movable within the third receiving cavity 2123. When the locking pin 820 is in the locked position, the locking end 822 extends from the frame 200 and engages with one of the plurality of second brake holes 813. When the locking pin 820 is in the unlocked position, the locking end 822 is located within the frame 200 and is disengaged from one of the plurality of second brake holes 813. The second lower rear support leg 212b is provided with a guide portion 2124 and a second guide hole 2125. The guide portion 2124 is accommodated in a third receiving cavity 2123 and is disposed on the first support leg housing 2121. The second guide hole 2125 is disposed in the guide portion 2124 and penetrates through the guide portion 2124 and the first support leg housing 2121, communicating with the third receiving cavity 2123. A locking pin 820 is inserted into the second guide hole 2125 and is movable along the second guide hole 2125. The second guide hole 2125 is adapted to guide the locking pin 820 to move in a predetermined direction (such as the D5 direction). The second connecting end 821 of the locking pin 820 extends out of the second guide hole 2125 to be drivenly connected to the third driving member 840.

[0271] As shown in Figures 83, 84, and 86, the third driving member 840 is movably disposed within the frame 200, specifically, the third driving member 840 is accommodated within the third receiving cavity 2123. The third driving member 840 is movably connected to the locking pin 820 to drive the locking pin 820 to move. Referring to Figures 84 and 85, the moving direction D4 of the third driving member 840 intersects with the moving direction D5 of the locking pin 820. The pedal member 830 is connected to 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, which abuts against the driving surface 841. The driving surface 841 is configured such that when the third driving member 840 moves, the driving surface 841 causes the second driving pin 852 to move, thereby driving the locking pin 820 to move. The driving surface 841 can be an inclined surface or an arc surface. The third driving member 840 includes two opposing first side plates 842 and a first connecting plate 843 connecting the two first side plates 842. Each of the two first side plates 842 has a driving surface 841. A guide portion 2124 is located between the two first side plates 842. The guide portion 2124 is formed as a first movement limiting portion 2126a. When the third driving member 840 moves upward along the D4 direction, the first movement limiting portion 2126a is adapted to abut against the inner side of the first connecting plate 843 to limit the movement stroke of the third driving member 840, thereby preventing the third driving member 840 from moving excessively and causing the second driving pin 852 to slip off the driving surface 841. The bottom wall of the third receiving cavity 2123 is formed as a second movement limiting portion 2126b. When the third driving member 840 moves downward along the D4 direction, the second movement limiting portion 2126b is adapted to abut against the outer side of the first connecting plate 843 to limit the movement stroke of the third driving member 840.

[0272] In this embodiment, the first brake mechanism elastic element 851 is disposed between the third drive member 840 and the frame 200. The first brake mechanism elastic element 851 is adapted to bias the third drive member 840 so that the locking pin 820 can be moved to the locked position. The first brake mechanism elastic element 851 includes a spring, one end of the first brake mechanism elastic element 851 abuts against the third drive member 840, and the other end of the first brake mechanism elastic element 851 abuts against the abutment portion 2127 protruding from the side wall of the third receiving cavity 2123.

[0273] The second brake mechanism elastic element 853 is disposed between the frame 200 and the locking pin 820. The second brake mechanism elastic element 853 is adapted to bias the locking pin 820 to the locked position. The second brake mechanism elastic element 853 includes a spring. The second brake mechanism elastic element 853 is received within the second guide hole 2125. The locking pin 820 has a protrusion 823, the second brake mechanism elastic element 853 is sleeved on the locking pin 820, and one end of the second brake mechanism elastic element 853 abuts against the bottom wall of the second guide hole 2125, and the other end abuts against the protrusion 823 (see Figure 84).

[0274] As shown in Figures 82 and 83, the pedal component 830 is pivotally mounted on the base 300, and the pedal component 830 is pivotable between a moving position and a stop position. When the pedal component 830 pivots from the moving position to the stop 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 stop position to the moving position, the pedal component 830 is adapted to drive the locking pin 820 from the locked position to the unlocked position.

[0275] Further, as shown in Figures 86 and 87, 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. Referring to Figure 87, the two ear plate portions 832 are arranged opposite to each other. The two ear plate portions 832 are respectively provided with at least two interconnected engaging recesses 833a and 833b. The brake connection portion 330 is located between the two ear plate portions 832 and is pivotally connected to the two ear plate portions 832. The brake connecting portion 330 is provided with a engaging protrusion 331, which is located on both sides of the brake connecting portion 330 facing the two ear plates 832 respectively. 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 to lock the engaging protrusion 331 in either engaging recess 833a or 833b, so that the pedal member 830 is locked in the moving position or the stopped position. The pedal member 830 can be operated to overcome the elastic force of the spring piece 835, so that the engaging protrusion 331 engages 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 the second engaging recess 833b is closer to the foot pedal 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.

[0276] In other embodiments not shown, similarly, a spring piece 835 and two engaging recesses 833a and 833b may be provided in the brake connecting portion 330, while an engaging protrusion 331 may be provided correspondingly in the ear plate portion 832. Specifically, the brake connecting portion 330 is located between and pivotally connected to the two ear plate portions 832. At least two engaging recesses 833a and 833b that communicate with each other are provided on the two sides of the brake connecting portion 330 facing the two ear plate portions 832. An engaging protrusion 331 is provided correspondingly on the side of each ear plate portion 832 facing the brake connecting portion 330, so that 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, which can lock the engaging protrusion 331 in either engaging recess 833a or 833b, so that the pedal member 830 is locked in the moving position or the stopped position. The pedal component 830 can be operated to allow the engaging protrusion 331 to overcome the elastic force of the spring piece 835, thereby engaging the engaging protrusion 331 with different engaging recesses 833a and 833b. At least two of the 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, that is, the second engaging recess 833b is closer to the foot pedal portion 831 than the first engaging recess 833a. When the engaging protrusion 331 engages with the second engaging recess 833b, the pedal component 830 is in the moving position; when the engaging protrusion 331 engages with the first engaging recess 833a, the pedal component 830 is in the stopped position.

[0277] Furthermore, the second traction member (not shown in the figures) includes a traction rope. One end of the second traction member (not shown in the figures) is connected to the pedal member 830, and the other end is connected to the third drive member 840. Specifically, referring to Figure 88, the pedal member 830 also has a traction connection portion 834, which includes two portions and is disposed on the lower surface of the foot pedal portion 831. The two second traction members (not shown in the figures) are respectively connected to the two traction connection portions 834, so that the two locking pins 820 can be driven in conjunction by one pedal member 830.

[0278] The operating principle of the brake mechanism 800 in this embodiment is explained in detail below:

[0279] When the infant carrier, which functions as a stroller, is in the braked state, to move forward, as shown in Figure 87, the pedal 830 is pressed down and rotated. Under the action of external force, the engaging protrusion 331 overcomes the elastic force of the spring piece 835 and switches from the second engaging recess 833b to the first engaging recess 833a. The pedal 830 switches from the stop position and locks in the moving position. At this time, the pedal 830 tightens the two second traction members (not shown in the attached figures), thereby driving the two third driving members 840 located in the first lower rear support leg 212a and the second lower rear support leg 212b to move upward simultaneously along the D4 direction, as shown in Figures 83 to 85. Then, the two third drive members 840 drive the second drive pin 852 to move along the drive surface 841 via the drive 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 locking the two locking pins 820 in the unlocked position, so that multiple wheels 411, 412, including the two predetermined wheels 810, can rotate relative to the first lower rear support leg 212a and the second lower rear support leg 212b, thereby enabling the infant vehicle to move.

[0280] When the infant carrier, acting as a stroller, is in motion, and braking is required, as shown in Figure 87, the pedal component 830 is pushed upward and rotated. Under the action of external force, the engaging protrusion 331 overcomes the elastic force of the spring piece 835 and switches from the first engaging recess 833a to the second engaging recess 833b, and the pedal component 830 switches from the moving position to the stopped position. At this time, the pedal component 830 no longer pulls the two second traction members (not shown in the figure), and at least one third driving member 840 moves downward along the D4 direction under the elastic restoring force of at least one first braking mechanism elastic member 851, as shown in Figures 83 to 85. At this time, the pushing force of the driving surface 841 on the second driving pin 852 is eliminated, and the two locking pins 820 move towards the locking position along the D5 direction under the elastic restoring force of the second braking mechanism elastic member 853, so that the locking ends 822 of the two locking pins 820 respectively engage with one of the second brake holes 813 on the two predetermined wheels 810, and lock the two locking pins 820 in the locking position. This prevents the two predetermined wheels 810 from rotating relative to the first lower rear support leg 212a and the second lower rear support leg 212b, thereby achieving braking.

[0281] In one embodiment, referring to Figures 64, 89 to 90, the infant carrier further includes a moving element 900. The moving element 900 includes two connecting arms 910, a U-shaped handle body 920, a length adjustment mechanism 960, two pivot seats 940, and two pivot adjustment elements 950. The two pivot seats 940 are pivotally connected to both sides of the seat 110, and the two pivot adjustment elements 950 are adapted to releasably lock the pivot seats 940 at a certain angle. The pivot seat 940 includes a disc-shaped portion 941 and a pivot connection portion 942 connected to the outer periphery of the disc-shaped portion 941. The pivot connection portion 942 is connected to the connecting arms 910. The side of the disc-shaped portion 941 facing the seat 110 (i.e., the inner side) forms a second receiving cavity 943. The pivot adjustment element 950 includes a pivot operation member 952 and a pivot fixing member 951. The pivoting operating member 952 is operably disposed on the side wall of the second receiving cavity 943 and partially accommodated within the second receiving cavity 943. Specifically, the inner side of the pivot seat 940 is provided with a third guide groove 944, one end of which penetrates the side wall of the second receiving cavity 943. The pivoting operating member 952 is inserted into the third guide groove 944 and can move along the third guide groove 944. The pivoting operating member 952 has an operating limiting part 9522 and a pivot engaging protrusion 9521. The operating limiting part 9522 is spaced from the side wall of the second receiving cavity 943 (i.e., the other end of the third guide groove 944), so that the pivoting operating member 952 has a certain travel along the third guide groove 944. The outer side of the operating limiting part 9522 is arc-shaped to better fit the side wall of the second receiving cavity 943. The seat 110 is provided with a plurality of pivot engagement recesses (not shown) that engage with a pivot engagement protrusion 9521. The pivot engagement protrusion 9521 is releasably engaged in one of the pivot engagement recesses to lock the pivot seat 940 at a desired angle. A resilient return member (not shown) is provided between the pivot actuator 952 and the pivot seat 940. The resilient return member includes a spring. The resilient return member is adapted to bias the pivot actuator 952 so that the pivot engagement protrusion 9521 engages with at least one of the plurality of pivot engagement recesses, such that the pivot seat 940 is releasably locked at the desired angle. The pivot retainer 951 is provided on the side of the disc portion 941 away from the receiving groove 943 (i.e., the outer side).

[0282] When the angle of the pivot seat 940 needs to be adjusted, the pivoting operating member 952 is operated to disengage the pivot engaging protrusion 9521 from the pivot engaging recess. Then, the pivot seat 940 is pivoted to the required angle and the pivoting operating member 952 is released. At this time, the pivot seat 940 moves under the restoring force of the elastic reset member, so that the pivot engaging protrusion 9521 re-engages with one of the multiple pivot engaging recesses, thereby realizing the angle adjustment of the pivot 940 and realizing the angle adjustment between the moving element 900 and the seat 110 to meet the usage needs of different scenarios.

[0283] In one embodiment, as shown in Figures 90, 92, and 93, the handle body 920 has adjusting portions 921 at both ends, and the two adjusting portions 921 are movably connected to the two connecting arms 910. The length adjustment mechanism 960 is switchable between a locked state and an unlocked state. When the length adjustment mechanism 960 is in the unlocked state, the adjusting portions 921 are movable relative to the connecting arms 910, thereby extending or shortening the moving element 900; when the length adjustment mechanism 960 is in the locked state, the adjusting portions 921 are fixed relative to the connecting arms 910.

[0284] Referring to Figures 89, 90, and 92, each connecting arm 910 is provided with a first hollow cavity 911 for accommodating the adjusting part 921, and the first hollow cavity 911 extends through both ends of the connecting arm 910. Each of the two connecting arms 910 is provided with a plurality of positioning holes 912, which extend through the side wall of the first hollow cavity 911. The positioning holes 912 include, for example, 2, 3, 4, 6, 9, etc. The moving element 900 also includes a handle fixing seat 931, which is fixedly connected to the end of the connecting arm 910, and at least a portion of the handle fixing seat 931 is inserted into the first hollow cavity 911. The adjusting part 921 passes through the handle fixing seat 931 and is slidably connected to the connecting arm 910.

[0285] Two adjusting parts 921 are respectively inserted into and slidable within two connecting arms 910, and the two adjusting parts 921 are housed within a first hollow cavity 911. Each adjusting part 921 has a second hollow cavity 925. Each adjusting part 921 is provided with a limiting member 932, configured to prevent the handle body 920 from completely disengaging from the connecting arms 910. The limiting member 932 is inserted into the side wall of the second hollow cavity 925. The limiting member 932 is housed within the first hollow cavity 911, and a portion of the limiting member 932 is located between the adjusting part 921 and the connecting arms 910. The limiting member 932 is adapted to abut against the handle fixing seat 931 to prevent the handle body 920 from completely sliding out of the connecting arms 910.

[0286] In one embodiment, as shown in Figures 89 and 90, the length adjustment mechanism 960 includes two mechanisms, which are located on both sides of the seat 110. When it is necessary to adjust the moving element 900, both length adjustment mechanisms 960 of the seat 110 can be adjusted simultaneously. For ease of description, the following description uses one of the length adjustment mechanisms 960 as an example.

[0287] Further referring to Figures 91 to 93, the length adjustment mechanism 960 includes 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 to the pull handle 962 via the pull rod 963. The positioning member 961 is movably disposed in the adjustment portion 921 on the corresponding side and can be switched between an extended position and a retracted position. When the positioning member 961 is in the extended position, it engages with one or more of the plurality of positioning holes 912. When the positioning member 961 is in the retracted position, it disengages from one or more of the positioning holes 912, that is, it exits from the one or more positioning holes 912, thereby allowing the adjustment portion 921 to slide relative to the connecting arm 910 on the corresponding side. In this embodiment, the positioning member 961 includes a movable connecting portion 9611 and a positioning portion 9612. The movable connecting part 9611 is housed within the second hollow cavity 925 and is drivenly connected to the pull rod 963. The adjusting part 921 has a first through hole 923 extending through the side wall of the second hollow cavity 925, and the positioning part 9612 is adapted to pass through the first through hole 923 and engage with one of the plurality of positioning holes 912.

[0288] As shown in Figures 91 and 93, the pull rod 963 includes a drive connection portion 9631, an operation connection portion 9632, and a connecting rod portion 9633 connecting the drive connection portion 9631 and the operation connection portion 9632. In this embodiment, the drive connection portion 9631 is accommodated within the second hollow cavity 925 and is movably connected to the positioning member 961. Specifically, the drive connection portion 9631 is U-shaped and includes two opposing second side plates 9635 and a second connecting plate 9636 connecting the two second side plates 9635. One end of the connecting rod portion 9633 is connected to the second connecting plate 9636, and the other end is connected to the operation connection portion 9632. The drive connection portion 9631 is provided with a second drive groove 9634. Specifically, the two second side plates 9635 are each provided with a second drive groove 9634. The movable connecting portion 9611 of the positioning member 961 is provided with a third driving pin 9642. The third driving pin 9642 is inserted into and movable along both second driving grooves 9634. The extending direction of the second driving grooves 9634 is intersected and not perpendicular to the moving direction of the positioning member 961, and the extending direction of the second driving grooves 9634 is intersected 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 may also be provided with a second driving groove 9634, and the driving connecting portion 9631 may be provided with a third driving pin 9642. The third driving pin 9642 is inserted into and movable along the second driving grooves 9634. The extending direction of the second driving grooves 9634 is intersected and not perpendicular to the moving direction of the positioning member 961, and the extending direction of the second driving grooves 9634 is intersected and not perpendicular to the moving direction of the pull rod 963.

[0289] Referring to Figures 90 and 92, the adjusting part 921 is provided with a third strip-shaped hole 924, which penetrates the side wall of the second hollow cavity 925. A portion of the operating connection part 9632 passes through the third strip-shaped hole 924 and extends out of the second hollow cavity 925 to connect with the pull handle 962. The pull handle 962 is disposed around at least a portion of the outer periphery of the adjusting part 921 and is movable along the adjusting part 921. The pull handle 962 is connected to the operating connection part 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 part 921 and abuts against the operating connection part 9632. The operating connection part 9632 is movable within the third strip-shaped hole 924, and the end of the third strip-shaped hole 924 is adapted to abut against the operating connection part 9632 to limit the travel of the pull rod 963, thereby limiting the travel of the pull handle 962.

[0290] As shown in Figures 92 and 93, a guide seat 965 is located at the end of the handle body 920 and inserted into the second hollow cavity 925. The guide seat 965 has a fixing hole 9654. The guide seat 965 is fixed to the second hollow cavity 925 by a bolt connecting it through the fixing hole 9654. The guide seat 965 has a third sliding groove 9651 and a fourth strip-shaped hole 9653. The third sliding groove 9651 extends laterally through the guide seat 965. Referring to Figures 91 to 93, the extension direction of the fourth strip-shaped hole 9653 is parallel to the extension direction of the third sliding groove 9651, both along the D6 direction. A positioning member 961 is movably disposed in the third sliding groove 9651 and can move along the third sliding groove 9651. The third drive pin 9642 is connected to the positioning member 961 and passes through the fourth slot 9653 and is inserted into the second drive groove 9634, so that the pull rod 963 can drive the positioning member 961 to move through the third drive pin 9642. Specifically, when the pull rod 963 moves along the D7 direction, the third drive pin 9642 is driven to move along the D6 direction through the insertion and cooperation of the second drive groove 9634 and the third drive pin 9642, thereby driving the positioning member 961 to move along the third sliding groove 9651 (i.e., the D6 direction).

[0291] As shown in Figure 91, the elastic element 9641 of the length adjustment mechanism is disposed between the guide seat 965 and the pull rod 963. The elastic element 9641 is adapted to bias the pull rod 963 so that the positioning element 961 is held in the extended position. The elastic element 9641 of the length adjustment mechanism can be an elastic element such as a spring or a spring sheet. In this embodiment, the elastic element 9641 of the length adjustment mechanism is a spring. The guide seat 965 is provided with a receiving groove 9655. Referring to Figure 93, the pull rod 963 has an abutment portion 9637, which is disposed between and connected to the two second side plates 9635. The abutment portion 9637 is disposed opposite to the second connecting plate 9636, wherein the second connecting plate 9636 is located outside the receiving groove 9655, and the abutment portion 9637 is at least partially accommodated within the receiving groove 9655 to connect the elastic element 9641 of the length adjustment mechanism. A third protrusion 9656 is provided on the wall of the receiving groove 9655, which is disposed opposite to the abutment portion 9637. One end of the elastic element 9641 of the length adjustment mechanism abuts against the abutment portion 9637, and the other end abuts against the third protrusion 9656.

[0292] The length adjustment process of the moving element 900 in this embodiment is described in detail below:

[0293] When the length of the moving element 900 needs to be adjusted, as shown in Figure 92, the handle 962 is pulled upward along the D7 direction. At the same time, the handle 962 drives the pull rod 963 to move upward along the D7 direction, and the elastic element 9641 of the length adjustment mechanism is compressed. Please refer to Figures 90 and 91 together. Then, the pull rod 963 drives the positioning element 961 to move to the right along the D6 direction through the cooperation of the second drive groove 9634 and the third drive pin 9642. When the positioning element 961 moves to the point where the positioning part 9612 disengages from a certain positioning hole 912, the length adjustment mechanism 960 is released, and the adjustment part 921 can move relative to the connecting arm 910. At this time, the overall length of the moving element 900 can be adjusted by moving the adjustment part 921 relative to the connecting arm 910.

[0294] When the adjusting part 921 moves to be opposite to another positioning hole 912 as needed, the pressure on the pull handle 962 can be released, and the pull rod 963 moves downward along the D7 direction under the elastic force of the elastic element 9641 of the length adjustment mechanism. At the same time, the pull rod 963, through the cooperation of the second drive groove 9634 and the third drive pin 9642, causes the positioning element 961 to move to the left along the D6 direction, so that the positioning part 9612 is re-inserted into the other positioning hole 912, thereby re-locking the adjusting part 921 and the connecting arm 910. At the same time, the pull rod 963 also drives the pull handle 962 to move downward along the D7 direction to reset.

[0295] The infant carrier of this embodiment has at least the following beneficial effects:

[0296] By switching between the folded and unfolded states of the frame 200, the infant vehicle can be switched between a stroller and a car seat. Its conversion structure is simple and easy to operate. During the switch from stroller to car seat, the seat 110 maintains a constant angle with the base 300, allowing the seat 110 to smoothly approach the base 300 with good stability. Furthermore, when the frame 200 is in the folded state, the entire infant vehicle can be used as a car seat without removing the seat component 100, making it simple to operate and easy to carry.

[0297] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0298] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

[0299] 10: Horizontal reference plane 100: Seat components 101: First accommodating cavity 110: Seat 111: Seat body 112: Seat shell 1121: First Seat Shell 1122: Second seat shell 1123: First concave part 1125:Second recess 113: First Receiving Cavity 114: Load-bearing cavity 115: Headrest 116: Leg rest 117: Pivot joint 1171: Second receiving slot 11711: First pivoting restraint slot 11712: Second pivoting restraint slot 1172: Second pivot shaft 11721: Pivot slot 120: Closing Limiting Part 121: Slot 130: Seatbelt positioning device 131: Seatbelt buckle 20: Vertical reference plane 200: Frame 210: Rear bracket 211: Upper rear support leg 211a: First upper rear support leg 211b: Second upper rear support leg 212: Lower rear support leg 212a: First lower rear support leg 212b: Second lower rear support leg 2121: First Leg Shell 2122: Second Leg Shell 2123: Third Reception Chamber 2124: Guiding Section 2125: Second guide hole 2126a: First moving limit part 2126b: Second movement limit unit 2127: Reliance Department 213: First Link 220: Front bracket 221: Upper front support leg 221a: First upper front support leg 221b: Second upper front support leg 222: Lower front support leg 222a: First lower front support leg 222b: Second lower front support leg 2221: First connecting segment 2222: Second connecting segment 223: Second Link 230: First support frame 231: First support rod 232: First connecting element 233: First Connector 240: Second support frame 241: Second support rod 242: Second connecting element 2421: Connecting rod 2421a: Second strip hole 2422: Connecting sleeve 243: Second connecting seat 300: Base 310: Base Body 311: First shell 312: Second shell 313: Second opening 314: The third concave part 315: Third opening 316: Stop hole 317: Second protrusion 318: Fourth Reception Chamber 320: Base Stand 321: Sliding sleeve 3211: Third through hole 322: First guide hole 330: Brake connection part 331: Card-fitting convex 340: Locking pivot 350: Slide bar 351: Adjustment hole 360: ISOFIX Connector 370: Linkage rod 400: Wheel components 410: Rear wheel components 411: Rear wheel 411a: First rear wheel 411b: Second rear wheel 412: Mudguard 413: Baffle connector 420: Front wheel components 421: Front wheel 430: Wheel mounting bracket 431: Connecting hole 440: Wheel body 441: First brake hole 5A: Deploy locking mechanism 5A1: Second sliding pin 5A2: First stop 5A21: First stop hook part 5A22: First wedge-shaped surface 5A3: First connector 5A4: Elastic component of the unfolding locking mechanism 5B: Deploy the locking and releasing mechanism 5B1: First operating component 5B11: First Operations Section 500: Angle Adjustment Mechanism 510: Mobile connector 511: First Locking Unit 512: First mating groove 520: Seat Connector 521: Second Locking Section 522: Second mating groove 530: Third Locking Section 540: Angle adjustment control element 550: Second reset component 560: Pivot Button 561: Button Body 562: Button protrusion 5621: Limiting hook 570: Angle locking component 571: Pivot hole 572: First Angle Adjustment Convex 573: Angle limiting convex 574: Second Angle Adjustment Convex 580: Angle reset component 6A: Closing and locking mechanism 6A1: Fixed rod 6A2: Locking component 6A2a: Fourth locking element 6A2b: Fifth locking component 6A21: Second connector 6A22: Locking component connection part 6A23: Locking hook 6A24: Second wedge surface 6A3: Elastic component of the closing and locking mechanism 6A31: Spring section 6A32: U-shaped connector 6A4: Fastener 6A41: Spring mounting part 6B: Closing, locking, and releasing mechanism 6B1: Second operating component 600: Switching Mechanism 610: Linking elements 611: First linkage 612: Second linkage 620: Locking element 621: Fixture 6211: Second receiving cavity 6212: Opening groove 6213: First opening 6214: Second opening 622: First locking component 6221: Lock the main body 6222: Locking convex 6222a: Bevel 6223: Flexible Arm 623: Collapse button 6231: Connecting part 6232: Operations Department 6233: Connecting slot 6234: Top Push Convex 6235: Locking concave 6236: Limiting Step 700: Adjustment device 710: Second stop 720: Third Operating Component 721: First drive slot 722: Operating hook 724: Receptacle 725: First protrusion 730: Fixed base 731: Third guide groove 740: Adjustment device elastic element 750: First drive pin 800: Braking mechanism 810: Reserved wheels 811: Wheel hub 812: Convex column 813: Second brake hole 820: Locking pin 821: Second connection terminal 822: Locked End 823:convex part 830: Pedal component 831: Foot pedal 832: Ear plate section 833a: First engagement recess 833b: Second engagement recess 834: Traction Connection 835: Shrapnel 836: Anti-slip texture 840: Third drive unit 841: Driving surface 842: First side plate 843: First connecting plate 851: Elastic component of the first braking mechanism 852: Second drive pin 853: Elastic component of the second braking mechanism 860: Brake lever 861: First strip hole 870: Brake control components 871: First pedal 8711: Fixing hole 8712: Set-up Department 8712a: Mounting cavity 8712b: Push Rib 8712c: Display window 8713: Trampoline Department 872: Second pedal 8721: Flexible fingers 880: Brake pusher component 881: Matching end 882: Brake Groove 883: Positioning slot 884: First Identifier 885: Second identifier 890: Third reset component 900: Moving element 910: Connecting Arm 911: First hollow cavity 912: Positioning hole 920: Handle Body 921: Adjustment Section 923: First perforation 924: Third strip hole 925: Second hollow cavity 931: Handle fixing base 932: Limiting component 940: Pivot 941: Disc-shaped section 942: Connecting part 943: Second accommodating cavity 944: Third guide groove 950: Pivot Adjustment Element 951: Pivoting Fixing Component 952: Pivot Operating Component 9521: Pivot engagement convex 9522: Operating limit unit 960: Length adjustment mechanism 961: Positioning component 9611: Activity Connection Department 9612: Positioning Department 962: Pull handle 963: Pull rod 9631: Drive connection part 9632: Operating connection part 9633: Connecting rod section 9634: Second drive slot 9635: Second side panel 9636: Second connecting plate 9637:Butt part 9641: Elastic element of length adjustment mechanism 9642: Third drive pin 965: Guide seat 9651: Third sliding groove 9653: Fourth strip hole 9654: Fixing hole 9655: Receiving tank 9656: Third protrusion 966: Length Adjustment Handle 9661: Sliding block 9661a: Second sliding groove 9661b: Second set of column design 967: Driver Block 9671: Mounting slot 9672: Through slot 9673: First guide groove 9674: Limiting groove 9675: Reset slot 9676: First set of column design 968: Positioning Block 9681: Positioning Terminal 9682: First sliding pin 969: Length reset component 970: Moving stick 971: First section of the pole 972: Second part 9721: Locking Hole 973: Length Adjustment Mechanism 9731: Fixed plug 9731a: First through hole 9731b: Second through hole 9731c: First sliding groove 9731d: First side view 9731e: Second side view 9731f: Third side view 9731i: First jacking section 9732: Locking pin 9732a: Drive pin 9733: Operating element 9733a: Pull rod 9733b: Length adjustment mechanism 9733c: Drive plug 9733d: First shell 9733e: Second shell 9733f: Connecting shell 9733g: Drive skew groove 9733h: Second jacking section 9734: First reset component 980: Mobile Unit 990: Handle bar 991: The Top Leader 9911: First gear position hole 992: Second-in-command 9921: Second gear hole 993: Adjusting slider 994: Hand joint 9941: Joint Body 9941a: Button mounting slot 9941b: Through-hole 9941c: First receiving slot 9941d: First pivot shaft 9941e: Angle limiting groove 9941f: First angle adjustment slot 9941g: Second Angle Adjustment Groove 9942: Installation component 9943: Connecting sleeve 995: Fixed base 9951: Through hole A10: Fasteners A20: First pin A30: Second pin B10: First pivot axis B20: Second pivot C00: First Restriction Agency C10: Second locking element C11: Locking end C12: Connecting end C121: Stroke slot C20: First driving component C21: Restriction Lifting Section C30: First elastic element C40: Limit pin D00: Second Restriction Agency D10: Second drive unit D11: First connection end D111: Clip hole D12: Set convexity D20: Fifth Locking Component D21: Card Holder D211: Hook D22: Stop end D30: Fourth Reset Component M: First position N: Second position 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

Claims

1. An infant carrier, characterized in that it comprises a carrier body, a moving element, a length adjustment mechanism, an angle adjustment mechanism, and at least one of a first limiting mechanism and a second limiting mechanism; wherein, The movable element is pivotally connected to the support body and is telescopic; the length adjustment mechanism is disposed on the movable element and is used to adjust the telescopic movement of the movable element, allowing the movable element to switch between an extended state and a retracted state; the angle adjustment mechanism is disposed between the movable element and the support body and is used to adjust the pivoting of the movable element relative to the support body; when the movable element is in the retracted state and can rotate relative to the support body, the first limiting mechanism locks the length adjustment mechanism to limit the telescopic movement of the movable element; when the movable element rotates to a preset angle, the first limiting mechanism releases the lock on the length adjustment mechanism, allowing the movable element to switch between an extended state and a retracted state; when the movable element switches to the extended state, the second limiting mechanism locks the angle adjustment mechanism to limit the pivoting of the movable element; when the movable element switches to the retracted state, the second limiting mechanism releases the lock on the angle adjustment mechanism, allowing the movable element to pivot.

2. The infant vehicle as claimed in claim 1, wherein the first restraining mechanism comprises: A second locking element is provided on the moving element; First driving component; The first drive member is provided on the support body and has a restriction release part; wherein at least a portion of the first drive member can drive the second locking member to move and lock onto the length adjustment mechanism, and the second locking member can cooperate with the restriction release part to release the lock on the length adjustment mechanism.

3. The infant carrier as claimed in claim 2, wherein when the moving element rotates relative to the carrier body, the first driving member drives the second locking member to move in the lateral direction of the carrier body and lock it to the length adjustment mechanism.

4. The infant carrier as claimed in claim 2, wherein the first drive member is a push rib disposed on the carrier body and protruding toward the side of the moving element.

5. The infant carrier as claimed in claim 4, wherein the push rib is an arcuate rib, and the arcuate direction of the arcuate rib is consistent with the arcuate direction of the pivoting of the moving element.

6. The infant carrier as claimed in claim 4, wherein the second locking member is a limiting post having a locking end and an abutting end, wherein when the moving element rotates, the pushing rib pushes against the abutting end to drive the locking end to move toward the length adjusting mechanism to lock onto the length adjusting mechanism.

7. The infant carrier as described in claim 5, wherein: The restriction release part is a release groove provided on the first driving member. When the moving element rotates to the preset angle, the abutting end is located in the release groove, the locking end disengages from the length adjustment mechanism, and the moving element can switch between a retracted state and an extended state.

8. The infant vehicle as claimed in claim 1, wherein the second restraining mechanism comprises: The second driving component can selectively engage with or disengage from the length adjustment mechanism; And a fifth locking member, which has a locking end that engages with the second driving member and a stop end that prevents the angle adjustment mechanism from pivoting.

9. The infant carrier as claimed in claim 7, wherein: The second driving member is pivoted within the moving element. The second driving member has a holding end on one side of the pivot point and a fourth reset member abuts on the other side of the pivot point. The moving element has a fixed seat. The end of the fourth reset member away from the second driving member is fixed to the fixed seat. The fixed seat has a through hole, and the stop end passes through the through hole.

10. The infant carrier as claimed in claim 8, wherein the length adjustment mechanism comprises: The drive block can be selectively pressed against or separated from the second drive member; And a length adjustment handle, which is connected to the drive block; When the first limiting mechanism locks the length adjustment mechanism, the length adjustment handle causes the drive block to separate from the second drive member, and the second drive member drives the stop end to block the movement of the angle adjustment mechanism; when the first limiting mechanism releases the lock on the length adjustment mechanism, the drive block presses against the second drive member, and the second drive member drives the stop end to disengage from the angle adjustment mechanism.

Images