Carrier and stroller

Abstract

A carrier (1), comprising: first pivot joints (20) each having a first pivot portion (211) and a second pivot portion (221) that pivot about a first pivot axis (L1); second pivot joints (30) each having a fourth pivot portion (31) and a second rotating portion (12) that are pivotally connected to each other about a second pivot axis (L2), the first pivot axis (L1) and the second pivot axis (L2) being non-collinear; first linkage unlocking mechanisms (40), wherein when the first pivot portions (211) and the second pivot portions (221) are relatively fixed, the first linkage unlocking mechanisms (40) lock the fourth pivot portions (31) and the second rotating portions (12) so as to limit the rotation of the fourth pivot portions (31) relative to the second rotating portions (12); and when the second pivot portions (221) rotate relative to the first pivot portions (211), the first linkage unlocking mechanisms (40) unlock the fourth pivot portions (31) and the second rotating portions (12), so as to allow the fourth pivot portions (31) to rotate relative to the second rotating portions (12), and the rotation of the second pivot portions (221) drives the fourth pivot portions (31) to rotate; and second linkage unlocking mechanisms (70), wherein the rotation of the fourth pivot portions (31) drives the second linkage unlocking mechanisms (70) to move.

Description

Vehicle and stroller TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile vehicles, and particularly relates to a vehicle and a stroller provided with the vehicle. BACKGROUND

[0002] In order to facilitate the use and storage of the stroller, the frame and the vehicle (for example, a child seat) mounted on the frame both have a folding function. However, the frame and the vehicle can only be folded respectively, and thus, when folding, the vehicle has to be detached from the frame for folding respectively, and when using again, the vehicle has to be mounted on the frame after the frame and the vehicle are unfolded respectively. As a result, the folding and unfolding operations are complicated and inconvenient to use. SUMMARY

[0003] Therefore, it is necessary to provide a vehicle which is convenient to fold, and the vehicle can be folded together with the frame, and thus the vehicle does not need to be detached from the frame.

[0004] According to an aspect of the present application, a vehicle is provided, comprising: a first pivot joint having a first pivot part and a second pivot part pivoted about a first pivot axis; a second pivot joint having a fourth pivot part and a second rotating part pivoted to each other about a second pivot axis, the first pivot axis and the second pivot axis being non-collinear; a first linkage release lock mechanism, when the first pivot part and the second pivot part are relatively fixed, the first linkage release lock mechanism locks the fourth pivot part and the second rotating part to limit the rotation of the fourth pivot part relative to the second rotating part, and when the second pivot part rotates relative to the first pivot part, the first linkage release lock mechanism releases the locking of the fourth pivot part and the second rotating part to allow the rotation of the fourth pivot part relative to the second rotating part, and the rotation of the second pivot part drives the rotation of the fourth pivot part; and a second linkage release lock mechanism, the rotation of the fourth pivot part drives the movement of the second linkage release lock mechanism.

[0005] In one embodiment, the first linkage release lock mechanism comprises a second driving member and a locking member, the second driving member is movably arranged between the first pivot joint and the second pivot joint, the locking member is movably arranged at the second pivot joint, and the movement direction of the second driving member intersects with the rotation direction of the second pivot part and the movement direction of the locking member; when the first pivot part and the second pivot part are relatively fixed, the second pivot part abuts against the second driving member, the second driving member abuts against the locking member, and the locking member engages the fourth pivot part and the second rotating part to limit the rotation of the fourth pivot part relative to the second rotating part; when the second pivot part rotates relative to the first pivot part, the second pivot part is spaced apart from the second driving member, and the locking member is disengaged from the fourth pivot part to allow the rotation of the fourth pivot part relative to the second rotating part.

[0006] In one embodiment, the first pivot axis and the second pivot axis are parallel to each other; the second pivot part is provided with a first pushing part, the first pushing part extends along with the second pivot part around the first pivot axis; the second driving member moves along a direction perpendicular to the first pivot axis and the second pivot axis, and the locking member moves along a direction parallel to the second pivot axis.

[0007] In one embodiment, the first linkage release mechanism further comprises a sixth elastic member, when the second pivot part is spaced apart from the second driving member, the sixth elastic member drives the locking member to disengage from the fourth pivot part.

[0008] In one embodiment, the first pivot joint further comprises: a first rotating part, pivotally connected with the second pivot part around the first pivot axis; a first locking member, having a locking position and a release position, when the first locking member is in the locking position, the first locking member restricts relative rotation between the first pivot part and the second pivot part, when the first locking member is in the release position, the first locking member allows relative rotation between the first pivot part and the second pivot part; a second locking member, having a locking position and a release position, when the second locking member is in the locking position, the second locking member restricts relative rotation between the second pivot part and the first rotating part, when the second locking member is in the release position, the second locking member allows relative rotation between the second pivot part and the first rotating part; a first driving member, having a first position, a second position and a third position; when the driving member is in the first position, the first locking member is in the locking position and the second locking member is in the locking position; when the driving member is in the second position, the first locking member is in the locking position and the second locking member is in the release position, the first pivot part and the second pivot part are relatively fixed to rotate together relative to the first rotating part; when the driving member is in the third position, the first locking member is in the release position and the second locking member is in the release position.

[0009] In one embodiment, the first driving member rotates around the first pivot axis, the first locking member and the second locking member both move along a direction parallel to the first pivot axis, the first locking member and the second locking member are located on two sides of the first driving member in the direction parallel to the first pivot axis, the first locking member moves from the locking position to the release position in a direction away from the first driving member, and the second locking member moves from the locking position to the release position in a direction close to the first driving member.

[0010] In one embodiment, the first driving member rotates from the first position to the third position, drives the first locking member to move from the locking position to the release position, and the first driving member rotates from the third position to the first position, drives the second locking member to move from the release position to the locking position.

[0011] In one embodiment, the first pivot joint further comprises a first elastic member and a second elastic member, the first driving member is rotated from the first position to the third position, the second elastic member drives the second locking member to move from the locking position to the unlocking position, the first driving member is rotated from the third position to the first position, the first elastic member drives the first locking member to move from the releasing position to the locking position.

[0012] In one embodiment, the first driving member or the first locking member is provided with an inclined surface, the inclined surface extends along a direction around the first pivot axis and is obliquely arranged compared with a direction parallel to the first pivot axis, the first driving member is rotated from the first position to the third position, the inclined surface abuts and rotates compared with one of the first driving member and the first locking member, thereby driving the first locking member to move from the locking position to the releasing position.

[0013] In one embodiment, the first driving member is provided with an inclined surface, the inclined surface extends along a direction around the first pivot axis and is obliquely arranged compared with a direction parallel to the first pivot axis, the first driving member is rotated from the third position to the first position, the inclined surface abuts and rotates compared with the second locking member, thereby driving the second locking member to move from the unlocking position to the locking position.

[0014] In one embodiment, the first rotating part is provided with a first locking hole and a second locking hole on a side facing the second locking member, the first locking hole and the second locking hole are arranged at intervals along a direction around the first pivot axis, the second locking member is movably connected with the second pivot part and is fixed relative to the second pivot part in the direction around the first pivot axis; when the driving member is in the first position, the second locking member enters the first locking hole or the second locking hole to limit the relative rotation of the second pivot part and the first rotating part, when the driving member is in the second position or the third position, the second locking member is out of the first locking hole or the second locking hole to allow the relative rotation of the second pivot part and the first rotating part.

[0015] In one embodiment, the first rotating part is provided with a limiting part on a side facing the second locking member, the second locking member is movably connected with the second pivot part and is fixed relative to the second pivot part in the direction around the first pivot axis; when the first driving member is in the second position, the second locking member rotates relative to the first rotating part with the second pivot part, the limiting part is located in the direction of the rotation of the second locking member around the first pivot axis, and blocks the rotation of the second locking member relative to the first rotating part, thereby blocking the rotation of the relatively fixed second pivot part and the first pivot part relative to the first rotating part.

[0016] In one embodiment, the unlocking position includes a first unlocking position and a second unlocking position; when the driving member is in the second position, the second locking member is in the first unlocking position, and the limiting portion is located in the direction in which the second locking member rotates about the first pivot axis; when the driving member is in the third position, the second locking member is in the second unlocking position, and the limiting portion is not located in the stroke in which the second locking member rotates about the first pivot axis.

[0017] In one embodiment, the first pivot joint further includes a fourth locking member movably connected with the second pivot portion and fixed relative to the second pivot portion in the direction about the first pivot axis; the first rotating portion includes a limiting column protruding into the second pivot portion, and a circumferential surface of the limiting column is provided with a stop surface; when the first driving member is in the second position and the limiting portion abuts the second locking member in the direction about the first pivot axis, the fourth locking member abuts the stop surface in the direction about the first pivot axis; when the first driving member is in the third position and the second pivot portion rotates relative to the first rotating portion, the fourth locking member moves to the outside of the stop surface along the extension direction of the stop surface.

[0018] In one embodiment, the first pivot portion rotates relative to the first rotating portion between a first limit position and a second limit position; the first pivot portion is provided with a first stop portion, and the first rotating portion is provided with a second stop portion; when a first side of the first stop portion abuts a first side of the second stop portion, the first pivot portion is located at the first limit position; when a second side of the first stop portion abuts a second side of the second stop portion, the first pivot portion is located at the second limit position.

[0019] In one embodiment, the carrier further includes a release mechanism, which includes a traction member having one end connected to the first driving member, and a pull handle having a first pivot stroke, when the pull handle is pivoted by the first pivot stroke, the pull handle drives the first driving member to move from the first position to the second position through the traction member, and a second pivot stroke, when the pull handle is pivoted by the second pivot stroke, the pull handle drives the first driving member to move from the first position to the third position through the traction member, the second pivot stroke being greater than the first pivot stroke.

[0020] In one embodiment, the carrier further includes a stop portion, and the release mechanism further includes a safety push button moving relative to the pull handle between a first moving position and a second moving position; when the safety push button is located at the first moving position, when the pull handle is pivoted by the first pivot stroke, the safety push button abuts the stop portion to prevent the pull handle from continuing to pivot; when the safety push button is located at the second moving position, when the pull handle is pivoted by the first pivot stroke, the safety push button does not abut the stop portion to allow the pull handle to continue to pivot to complete the second pivot stroke.

[0021] In one embodiment, the first pivot joint further comprises: a third pivot part pivotally connected to the first connecting seat and the second connecting seat about the first pivot axis, the third pivot part is provided with a movable slot, the first connecting seat is provided with a first positioning part extending into the movable slot, the second connecting seat is provided with a second positioning part extending into the movable slot, the first positioning part and the second positioning part are movable in the movable slot about the first pivot axis; when the first pivot part and the second pivot part are relatively fixed, two ends of an extension direction of the movable slot are respectively in abutment with the first positioning part and the second positioning part, the third pivot part, the first pivot part and the second pivot part are relatively fixed; when the first pivot part and the second pivot part are relatively rotated, at least one end of the extension direction of the movable slot is separated from at least one of the first positioning part and the second positioning part, so that the third pivot part is rotatable relative to both the first pivot part and the second pivot part.

[0022] In one embodiment, the second pivot joint further comprises: a mounting seat pivotally connected to the second rotating part, the second linkage release mechanism comprises: a third locking piece having a pivot position and a stop position, when the third locking piece is in the pivot position, the third locking piece allows the second rotating part and the mounting seat to be relatively pivoted, when the third locking piece is in the stop position, the third locking piece prevents the pivot seat and the mounting seat from being relatively pivoted, the rotation of the fourth pivot part drives the third locking piece to move from the stop position to the pivot position.

[0023] In one embodiment, the fourth pivot part or the third locking piece is provided with a pushing inclined surface extending along a direction about the second pivot axis and obliquely arranged compared to a direction parallel to the second pivot axis, the rotation of the fourth pivot part drives the pushing inclined surface to abut and rotate relative to one of the first driving piece and the first locking piece, thereby driving the third locking piece to move from the stop position to the pivot position.

[0024] In one embodiment, the fourth pivot part is provided with a second pushing part extending along the second pivot axis, the third locking piece is provided with a mounting through hole for the second pushing part to pass through, a circumferential surface of the second pushing part is provided with a pushing inclined surface, the rotation of the fourth pivot part drives the pushing inclined surface to abut a hole wall of the mounting through hole.

[0025] In one embodiment, the first pivot joint further comprises: a first rotating part pivotally connected to the second pivot part about the first pivot axis, the first rotating part and the second rotating part are connected to each other; when the third locking piece is in the pivot position, the first pivot joint and the second rotating part are pivotable relative to the mounting seat.

[0026] In one embodiment, the third locking member is switched between the stop position and the pivoting position in a direction parallel to the second pivoting axis, and the third locking member is fixed relative to the mounting base in a direction around the second pivoting axis; the second linkage release mechanism further comprises a release portion arranged on a side of the third locking member facing the mounting base, and the mounting base is provided with a release hole at a position aligned with the release portion, wherein when the third locking member moves to the pivoting position, the release portion protrudes from the mounting base through the release hole.

[0027] In one embodiment, the carrier further comprises a second frame connected to the second pivoting portion, a seat plate connected to the fourth pivoting portion, and a connecting member connecting the second frame and the seat plate; when the second pivoting portion rotates relative to the first pivoting portion, the second frame drives the seat plate to rotate through the connecting member.

[0028] In one embodiment, the fourth pivoting portion is provided with a limiting through slot extending around the second pivoting axis; the second pivoting joint further comprises a limiting pin connected to the second rotating portion and sliding in the limiting through slot, and when the limiting pin abuts against an end of the limiting through slot, the connecting member drives the seat plate and the fourth pivoting portion to rotate.

[0029] In one embodiment, the seat plate is provided with a handle.

[0030] In one embodiment, the carrier further comprises a pivoting seat, and the first pivoting joint further comprises a first rotating portion pivoted to the second pivoting portion around the first pivoting axis, and the first rotating portion and the second rotating portion are connected to each other; the pivoting seat comprises the first rotating portion and the second rotating portion connected to each other, and the first release linkage mechanism is movably arranged in the pivoting seat.

[0031] According to another aspect of the present application, a stroller is also provided, comprising the carrier in the foregoing embodiments, and a frame, wherein the carrier is detachably mounted on the frame, and the second linkage release mechanism is moved to act on the frame, thereby allowing the frame to be folded. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout and in which the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The drawings are not necessarily to scale and the emphasis is on the functional description of the application.

[0033] Other features, objects and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings, in which:

[0034] FIG. 1 is a perspective view of a stroller according to one embodiment of the present application, wherein the carrier and the frame are in a separated state.

[0035] Figure 2 is a perspective view of the carrier according to one embodiment of the present application.

[0036] Figure 3 is a side view of the stroller according to one embodiment of the present application, with the carrier in a seating mode.

[0037] Figure 4 is a side view of the stroller according to one embodiment of the present application, with the carrier in a sleeping mode.

[0038] Figure 5 is a side view of the stroller according to one embodiment of the present application, with the stroller in a collapsed state.

[0039] Figure 6 is a perspective view of the stroller according to Figure 5.

[0040] Figure 7 is an exploded view of a first pivot joint according to one embodiment of the present application.

[0041] Figure 8 is another exploded view of the first pivot joint according to one embodiment of the present application.

[0042] Figure 9 is a side view of the carrier according to one embodiment of the present application, with the carrier in a sleeping mode, with the pull handle in an initial state.

[0043] Figure 10 is a side view of the carrier according to one embodiment of the present application, with the carrier in a seating mode, and the pull handle pivoted a first pivot travel.

[0044] Figure 11 is an enlarged view of section A in Figure 9.

[0045] Figure 12 is a bottom view of the carrier shown in Figure 9, with the first pivot joint in a locked state and shown in cross-section.

[0046] Figure 13 is a perspective view of the carrier according to one embodiment of the present application, with parts of the first pivot joint disassembled to show its internal structure.

[0047] Figure 14 is another perspective view of the carrier according to one embodiment of the present application, with the pivot socket and the locking pin disassembled to show the pivot socket internal structure and its cooperation with the locking pin.

[0048] Figure 15 is an enlarged view of section B in Figure 10.

[0049] Figure 16 is a bottom view of the carrier according to one embodiment of the present application, with the first pivot joint in a first unlocked state and shown in cross-section.

[0050] Figure 17 is a side view of the carrier according to one embodiment of the present application, with the carrier in a collapsing process, with the pull handle pivoted a second pivot travel.

[0051] Figure 18 is a perspective view of the carrier shown in Figure 17 with the pivot socket and locking pin removed to show the internal structure of the pivot socket and its relationship to the locking pin.

[0052] Figure 19 shows the carrier shown in Figure 17 viewed in a direction generally parallel to the seat deck with the first pivot joint in the second unlocked state and shown in cross-section.

[0053] Figure 20 is a side view of the carrier according to one embodiment of the present application with the carrier in the seat mode with the first pivot joint shown in cross-section.

[0054] Figure 21 is a side view of the carrier according to one embodiment of the present application with the carrier in the process of being collapsed with the first pivot joint shown in cross-section.

[0055] Figure 22 is a side view of the carrier according to one embodiment of the present application with the carrier in the collapsed cot mode with the first pivot joint shown in cross-section.

[0056] Figure 23 is a side view of the carrier according to one embodiment of the present application with the carrier in the process of being collapsed with the first pivot joint shown in cross-section.

[0057] Figure 24 is a perspective view of the carrier according to one embodiment of the present application with portions of the pivot socket removed to show the internal structure thereof.

[0058] Figure 25 shows the carrier shown in Figure 24 viewed in a direction generally parallel to the seat deck with the first pivot joint and the second pivot joint shown in cross-section.

[0059] Figure 26 is a side view of the carrier according to one embodiment of the present application with the carrier in the process of being collapsed.

[0060] Figure 27 shows a cross-sectional view of the carrier shown in Figure 26 along the axis of the first pivot axis and the axis of the second pivot axis of the first pivot joint and the second pivot joint.

[0061] Figure 28 is an exploded view of the second pivot joint and the pivot socket according to one embodiment of the present application.

[0062] Figure 29 is another exploded view of the second pivot joint and the pivot socket according to one embodiment of the present application.

[0063] Figure 30 is an enlarged view of section C in Figure 28.

[0064] Figure 31 is an enlarged view of section D in Figure 29.

[0065] Figure 32 is an exploded view of the release mechanism according to one embodiment of the present application.

[0066] FIG. 33 is an exploded view of another perspective of the mount and slide shown in FIG. 32. DETAILED DESCRIPTION

[0067] For the purposes of this application, a more complete description of the application will be presented in the following detailed description of the application. The preferred embodiments of the application are illustrated in the attached drawings. However, the application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0068] It is noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components can be present. The terms "mounting", "one end", "the other end", and similar terms are used herein for illustrative purposes only.

[0069] 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 application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0070] Referring to FIGS. 1, 2-6, one embodiment of the application provides a stroller including a carrier 1 and a frame 9, wherein the carrier 1 is detachably connected to a folding joint 94 of the frame 9. The carrier 1 includes a first pivot joint 20, a second pivot joint 30, a first linkage release lock mechanism 40, a second linkage release lock mechanism 70 (see FIG. 28, which will be described in detail later), a first frame 13, and a second frame 14.

[0071] The first pivot joint 20 is fixedly connected with the first frame 13 and the second frame 14, and the first pivot joint 20 is pivotably connected to the second pivot joint 30 through a pivot seat 10. Optionally, the pivot seat 10 includes a first rotating portion 11 and a second rotating portion 12 fixedly connected with each other, the first pivot joint 20 includes the first rotating portion 11, and the second pivot joint 30 includes the second rotating portion 12. The second pivot joint 30 is detachably connected to the folding joint 94 of the frame 9.

[0072] The frame 9 includes a handle 95, a front leg 96, and a rear leg 97, which are connected with each other through the folding joint 94. The first linkage release lock mechanism 40 is connected to the first pivot joint 20 and the second pivot joint 30, and the second linkage release lock mechanism 70 is arranged in the second pivot joint 30.

[0073] When the carrier 1 is unfolded, the second frame 14 is fixed relative to the first frame 13, the first linkage release lock mechanism 40 locks the second pivot joint 30, and the pivoting of the second pivot joint 30 is limited. When the carrier 1 is folded, the pivoting of the second frame 14 relative to the first frame 13 can drive the first linkage release lock mechanism 40 to release the second pivot joint 30, so as to allow the pivoting of the second pivot joint 30, and drive the second pivot joint 30 to pivot. The pivoting of the second pivot joint 30 drives the second linkage release lock mechanism 70 to release the folding joint 94 of the vehicle frame 9. In this way, the pivoting of the second pivot joint 30 is driven by the folding linkage of the carrier 1 to release the folding joint 94 of the vehicle frame 9, so as to realize the overall folding of the carrier 1 and the vehicle frame 9. During the entire folding process, the carrier 1 does not need to be disassembled from the vehicle frame 9, and the folding is simple and convenient.

[0074] Specifically, referring to FIGS. 7 and 8, in one embodiment, the first pivot joint 20 includes a first connecting seat 21 and a second connecting seat 22. The first connecting seat 21 and the second connecting seat 22 are connected to each other and are arranged to be coaxially pivotable relative to each other. Specifically, one end of the first connecting seat 21 is formed into a first pivot portion 211, and the other end of the first connecting seat 21 is fixedly connected with the first frame 13. Optionally, the first pivot portion 211 is formed into a substantially circular structure. One end of the second connecting seat 22 is formed into a second pivot portion 221, and the other end of the second connecting seat 22 is fixedly connected with the second frame 14. Optionally, the second pivot portion 221 is formed into a substantially circular structure. Those skilled in the art can understand that the first connecting seat 21 and the second connecting seat 22 are respectively fixedly connected with the first frame 13 and the second frame 14, the first pivot portion 211 and the first frame 13 have the same movement state, and the second pivot portion 221 and the second frame 14 have the same movement state, so that the movement state of the first pivot portion 211 and the second pivot portion 221 described below is also applicable to the first frame 13 and the second frame 14 and the first connecting seat 21 and the second connecting seat 22.

[0075] In the present embodiment, one side of the second pivot portion 221 and the first pivot portion 211 are connected to each other and arranged to be able to pivot coaxially with each other, and the other side of the second pivot portion 221 and the first rotation portion 11 are connected to each other and arranged to be able to pivot coaxially with each other. In the embodiment according to the present application, the pivot axis common to the first pivot portion 211, the second pivot portion 221 and the first rotation portion 11 is defined as the first pivot axis L1, i.e. the second pivot portion 221 and the first pivot portion 211 are able to pivot relative to each other about the first pivot axis L1, and the first pivot portion 211 is able to pivot relative to the first rotation portion 11 about the first pivot axis L1. The first pivot portion 211, the second pivot portion 221 and the first rotation portion 11 together form an accommodation space. In the present embodiment, the first pivot axis L1 is defined as a virtual connection line of the centers of the first pivot portion 211 and the second pivot portion 221. Alternatively, the first pivot portion 211, the second pivot portion 221 and the first rotation portion 11 are connected together by a mounting pin 119 extending along the first pivot axis L1.

[0076] With continued reference to FIGS. 7 and 8, in one embodiment, the first pivot joint 20 further comprises a first locking member 23. Optionally, the first locking member 23 is arranged in a substantially disc-shaped structure and disposed in the accommodation space. The first locking member 23 is able to move in a direction parallel to the first pivot axis L1 between a locked position and an unlocked position. Specifically, the inner side of the first pivot portion 211 is provided with first locking teeth 212, the side of the second pivot portion 221 facing the first pivot portion 211 is provided with second locking teeth 222, and the outer periphery of the first locking member 23 is provided with third locking teeth 231. It is to be noted that the term "inner side of the first pivot portion 211" herein refers to the side of the first pivot portion 211 facing the accommodation space. When the first locking member 23 is moved such that the third locking teeth 231 are engaged with both the first locking teeth 212 and the second locking teeth 222, the first locking member 23 is moved to the locked position. At this time, in the direction about the first pivot axis L1, the first locking member 23 restricts the relative pivoting of the first pivot portion 211 and the second pivot portion 221. When the first locking member 23 is moved such that the third locking teeth 231 are engaged with only one of the first locking teeth 212 and the second locking teeth 222, for example, in the present embodiment, when the first locking member 23 is moved such that the third locking teeth 231 are engaged with only the first locking teeth 212, the first locking member 23 is moved to the unlocked position. At this time, in the direction about the first pivot axis L1, the first locking member 23 no longer restricts the relative pivoting of the first pivot portion 211 and the second pivot portion 221, and thus the second pivot portion 221 and the first pivot portion 211 are able to pivot relative to each other.

[0077] With reference to FIGS. 7 and 8, in one embodiment, the first pivot joint 20 further comprises a first driving member 24 and a first elastic member 25. Optionally, the first driving member 24 is provided as a substantially disc-shaped structure.

[0078] The first driving member 24 is arranged in the accommodating space and is arranged to be pivotable about the first pivot axis L1. Specifically, the first driving member 24 is arranged at a side of the first locking member 23 distal to the first pivot portion 211. A side of the first driving member 24 facing the first locking member 23 is provided with a first pushing portion 241, which has a first extension length in the direction about the first pivot axis L1. The side of the first locking member 23 facing the first driving member 24 is provided with a pushing surface 234 and an accommodating groove 232 for accommodating the first pushing portion 241, the accommodating groove 232 being recessed from the pushing surface 234 towards the inside of the first locking member 23. The accommodating groove 232 has a second extension length in the direction about the first pivot axis L1. Optionally, the first extension length is equal to the second extension length, so as to allow the first pushing portion 241 to enter the accommodating groove 232. Optionally, the first extension length is smaller than the second extension length, and in such an embodiment, the first driving member 24 is allowed to pivot relative to the first locking member 23 by an angle, which is equal to an angle corresponding to the difference between the first extension length and the second extension length, with the first pushing portion 241 remaining in the accommodating groove 232.

[0079] The first elastic member 25 abuts against the first locking member 23 and continuously applies an elastic force to the first locking member 23, so that the first locking member 23 has a tendency to move towards the first driving member 24. It is to be noted that all the "elastic members" in the present application can be any suitable elastic device such as a compression spring, a tension spring, a torsion spring, a spring sheet, etc., as long as it can provide an elastic force, and the present application does not limit the specific type of the elastic device. In the present embodiment, the first elastic member 25 is a compression spring, one end of which abuts against the inner side of the first pivot portion 211 and the other end of which abuts against a side of the first locking member 23 facing the first pivot portion 211, so as to bias the first locking member 23 towards the first driving member 24 (i.e. towards a direction distal to the first pivot portion 211).

[0080] When the first driving member 24 is pivoted to allow the first pushing portion 241 to enter the accommodating groove 232, the first elastic member 25 drives the first locking member 23 to move towards the first driving member 24, and the third locking tooth 231 reaches a position of engaging with the first locking tooth 212 and the second locking tooth 222 at the same time, i.e. the locking position. When the first driving member 24 continues to be pivoted to make the first pushing portion 241 disengage from the accommodating groove 232, the first pushing portion 241 pushes the pushing surface 234 of the first locking member 23, and the first locking member 23 moves towards the first pivoting portion 211 against the pushing force of the first elastic member 25, so that the third locking tooth 231 disengages from the second locking tooth 222, the first locking member 23 enters the unlocking position, and the first locking member 23 moves from the locking position to the unlocking position away from the first driving member 24. Optionally, the outer surface of the first pushing portion 241 is provided with a first inclined surface 242, and the groove wall of the accommodating groove 232 is provided with a second inclined surface 233. During the process of the first pushing portion 241 disengaging from the accommodating groove 232, the first inclined surface 242 and the second inclined surface 233 contact and slide relative to each other, so as to guide the first pushing portion 241 to disengage from the accommodating groove 232. In other embodiments, only the first pushing portion 241 is provided with the first inclined surface 242, and the first inclined surface 242 and the groove edge of the accommodating groove 232 contact and slide relative to each other, so as to guide the first pushing portion 241 to disengage from the accommodating groove 232; or only the accommodating groove 232 is provided with the second inclined surface 233, and the second inclined surface 233 and the outer surface of the first pushing portion 241 contact and slide relative to each other, so as to guide the first pushing portion 241 to disengage from the accommodating groove 232.

[0081] With reference back to FIGS. 7 and 8, in one embodiment, the first pivot joint 20 further comprises: a second locking member 26 and a second elastic member 271. The second locking member 26 is disposed in the accommodating space. The second locking member 26 is movably connected with the second connecting seat 22, specifically, the second locking member 26 is arranged to be fixed in the direction around the first pivot axis L1 relative to the second connecting seat 22, and can move in the direction parallel to the first pivot axis L1 relative to the second connecting seat 22. Optionally, the second pivot portion 221 is further fixedly provided with a bracket 29 in the accommodating space, that is, the bracket 29 is fixed in the direction around the first pivot axis L1 relative to the second connecting seat 22. The bracket 29 is provided with a mounting hole 291 extending along the first pivot axis L1, and the second locking member 26 is threaded in the mounting hole 291 to achieve that the second locking member 26 is fixed in the direction around the first pivot axis L1 relative to the bracket 29 (i.e., fixed relative to the second connecting seat 22) and moves in the direction parallel to the first pivot axis L1 relative to the bracket 29. It can be understood by those skilled in the art that the second locking member 26 being fixed in the direction around the first pivot axis L1 relative to the bracket 29 and moving in the direction parallel to the first pivot axis L1 relative to the bracket 29 can also be achieved by other suitable manners.

[0082] The second locking member 26 has an abutting end 261 abutting against the first driving member 24 and a locking end 262 opposite to the abutting end 261. The second locking member 26 and the first locking member 23 are located on two sides of the first driving member 24 in a direction parallel to the first pivot axis L1. The inner side of the first rotating part 11 is provided with a first locking hole 111 (see FIG. 12) for accommodating the locking end 262. It should be noted that the term “inner side of the first rotating part 11” herein refers to the side of the first rotating part 11 facing the accommodation space. When the locking end 262 enters the first locking hole 111, the second locking member 26 restricts the relative pivoting of the second pivot part 221 and the first rotating part 11, at this time, the second locking member 26 is in a locked position. The second elastic member 271 is sleeved on the second locking member 26, and the second elastic member 271 continuously applies an elastic force to the second locking member 26, so that the second locking member 26 continuously presses against the first driving member 24. Therefore, the second elastic member 271 causes the second locking member 26 to have a movement tendency away from the first locking hole 111. When the second locking member 26 is away from the first locking hole 111, it is defined that the second locking member 26 is in an unlocked position at this time, and the second locking member 260 can rotate with the second pivot part 221 relative to the first rotating part 11. It can be seen that the second locking member 26 moves from the locked position to the unlocked position in a direction close to the first driving member 24. It can also be seen that the second elastic member 271 has a tendency to drive the second locking member 26 to move from the locked position to the unlocked position. In an embodiment, the second locking member 26 is in the shape of a pin and extends in a direction parallel to the first pivot axis L1. The pin-shaped second locking member 26 is defined as a first locking pin 260 (hereinafter described by using the first locking pin 260).

[0083] With continuous reference to FIGS. 7 and 8, in an embodiment, the side of the first driving member 24 away from the first locking member 23 is provided with a first abutting face 247 for abutting against the abutting end 261, a second abutting face 243 and a third abutting face 244, the second abutting face 243 and the third abutting face 244 are both recessed from the first abutting face 247 towards the side away from the second locking member 26, and the depth of the third abutting face 244 is greater than the depth of the second abutting face 243.

[0084] With reference to FIGS. 12 and 13, when the first driving member 24 is in the first position, the first pushing portion 241 is accommodated in the accommodating groove 232, the first locking member 23 is in the locking position, for example, the first locking position, the abutting end 261 of the first locking pin 260 abuts on the first abutting surface 247 of the first driving member 24, the locking end 262 of the first locking pin 260 is accommodated in the first locking hole 111, and the second locking member 26 is in the locking position, as shown in FIG. 12. At this time, the first pivoting joint 20 is in the locked state, the third locking tooth 231 is engaged with the first locking tooth 212 and the second locking tooth 222 at the same time, the first connecting seat 21 and the second connecting seat 22 cannot be pivoted, and the second pivoting portion 221 cannot be pivoted relative to the first rotating portion 11.

[0085] With reference to FIGS. 13 and 16, when the first driving member 24 is pivoted from the first position to the second position, the pivoting angle of the first driving member 24 is not greater than the angle corresponding to the difference between the first extension length and the second extension length, and the first pushing portion 241 is still accommodated in the accommodating groove 232. At this time, the first locking member 23 is still in the locking position, for example, the first locking position, that is, the position of the first locking member 23 does not change when the first driving member 24 is pivoted from the first position to the second position. Alternatively, when the first driving member 24 is pivoted from the first position to the second position, the first inclined surface 242 pushes the second inclined surface 233, so that the first locking member 23 moves a certain distance towards the first pivoting portion 211, and the third locking tooth 231 of the first locking member 23 is still engaged with the first locking tooth 212 and the second locking tooth 222 at the same time. At this time, the first locking member 23 is still in the locking position, but in the second locking position instead of the first locking position. In other words, the first locking member 23 in the second locking position is closer to the first pivoting portion 211 than the first locking member 23 in the first locking position. Therefore, the locking position of the first locking member 23 includes the first locking position and the second locking position.

[0086] When the first driving member 24 is pivoted from the first position to the second position, the abutting end 261 of the first locking pin 260 is aligned with the second abutting surface 243 of the first driving member 24 in a direction parallel to the first pivot axis L1, the second elastic member 271 drives the abutting end 261 to abut against the second abutting surface 243, so that the locking end 262 of the first locking pin 260 is disengaged from the first locking hole 111, and the second locking member 26 is in an unlocked position, for example, a first unlocked position. At this time, the first pivot joint 20 is switched from the locked state to a first unlocked state, the first connecting seat 21 and the second connecting seat 22 can be pivoted together around the first pivot axis L1 relative to the first rotating part 11, and the third locking tooth 231 remains engaged with the first locking tooth 212 and the second locking tooth 222, the first connecting seat 21 and the second connecting seat 22 cannot be pivoted relative to each other, and the first connecting seat 21 and the second connecting seat 22 are relatively fixed. When the first pivot joint 20 is in the first unlocked state, the first frame 13 and the second frame 14 can be pivoted as a whole around the first pivot axis L1 relative to the first rotating part 11 without relative pivoting, thereby achieving switching of the carrier 1 between a sleeping box mode and a seat mode. In the present application, the term "sleeping box mode" refers to that the first frame 13 and the second frame 14 are both located in substantially the same plane and are pivoted to a substantially horizontal state, as shown in FIGS. 4 and 9. The term "seat mode" refers to that the first frame 13 and the second frame 14 are both located in substantially the same plane and are pivoted to a state at an angle relative to the horizontal plane, as shown in FIGS. 3 and 10. The angle can be set according to actual needs by those skilled in the art, for example, 30°, 45°, etc. That is, when the first connecting seat 21 and the second connecting seat 22 are relatively fixed, the first frame 13 and the second frame 14 are both located in substantially the same plane and are in an unfolded state, and the first frame 13 and the second frame 14 in the unfolded state include the "sleeping box mode" and the "seat mode".

[0087] Referring to FIG. 14, optionally, the inner side of the first rotating part 11 is further provided with a second locking hole 113, which is arranged in the direction around the first pivot axis L1 and spaced from the first locking hole 111 in the direction around the first pivot axis L1. The second locking hole 113 has the same function as the first locking hole 111, that is, when the locking end 262 of the first locking pin 260 is accommodated in the second locking hole 113, the second locking part 26 is in the locked position; when the locking end 262 of the first locking pin 260 is separated from the second locking hole 113, the second locking part 26 is in the unlocked position. Optionally, when the first frame 13 and the second frame 14 are pivoted as a whole around the first pivot axis L1 to align the first locking pin 260 with the first locking hole 111, the carrier 1 reaches the sleeping box mode; when the first frame 13 and the second frame 14 are pivoted as a whole around the first pivot axis L1 to align the first locking pin 260 with the second locking hole 113, the carrier 1 reaches the seat mode. Optionally, more than two second locking holes can be provided, thereby defining multiple sets of seat modes or reclining modes with different inclination angles between the sleeping box mode and the seat mode.

[0088] With reference to FIGS. 13 and 19, when the first driving part 24 is pivoted from the second position to the third position, since the pivoting angle of the first driving part 24 is greater than the angle corresponding to the difference between the first extension length and the second extension length, the first pushing part 241 is separated from the accommodating groove 232 and pushes the pushing surface 234 of the first locking part 23, so that the first locking part 23 enters the release position, and the abutting end 261 of the first locking pin 260 is aligned with the third abutting surface 244 of the first driving part 24 in the direction parallel to the first pivot axis L1. Under the action of the elastic force of the second elastic part 271, the abutting end 261 abuts against the third abutting surface 244. At this time, the second locking part 26 is still in the unlocked position, specifically the second unlocked position. At this time, the first pivot joint 20 is switched from the first release state to the second release state, the first connecting seat 21 and the second connecting seat 22 can be pivoted around the first pivot axis L1 relative to the first rotating part 11, and the first connecting seat 21 and the second connecting seat 22 can be pivoted relative to each other. When the first pivot joint 20 is in the second release state, the user can pivot the second frame 14 towards the first frame 13 to fold the carrier 1.

[0089] Referring to FIG. 14, in one embodiment, the inner side of the first rotating part 11 is further provided with a limiting part 112 protruding from the inner side of the first rotating part 11. When the first driving part 24 is pivoted to the second position, the first pivoting joint 20 enters the first release state, and the first frame 13 and the second frame 14 can be pivoted as a whole around the first pivoting axis L1. At this time, the second elastic part 271 drives the abutting end 261 to abut against the second abutting surface 243, the locking end 262 of the first locking pin 260 is separated from the first locking hole 111, the second locking part 26 can rotate relative to the first rotating part 11 with the second pivoting part 221, the distance between the locking end 262 and the inner side of the first rotating part 11 is less than the height of the limiting part 112 protruding from the inner side of the first rotating part 11, and the limiting part 112 is located in the direction in which the second locking part 26 rotates around the first pivoting axis L1, thereby preventing the second locking part 26 from rotating relative to the first rotating part 11, and further preventing the relatively fixed second pivoting part 221 and the first pivoting part 211 from rotating relative to the first rotating part 11. Thus, when the first frame 13 and the second frame 14 are pivoted as a whole to the position in which the first driving pin 260 abuts against the end of the limiting part 112, the pivoting of the first frame 13 and the second frame 14 as a whole is limited. By providing the limiting part 112, the over-pivoting of the first frame 13 and the second frame 14 as a whole can be avoided.

[0090] Optionally, in the direction around the first pivoting axis L1, the second locking hole 113 is arranged between the first locking hole 111 and the limiting part 112, and the end of the limiting part 112 is arranged adjacent to the second locking hole 113. Thus, after the first frame 13 and the second frame 14 are pivoted to the seat mode, the first locking pin 260 abuts against the end of the limiting part 112, thereby preventing the user from continuing to rotate the first frame 13 and the second frame 14 located in the same horizontal plane in the direction of making the carrier 1 more inclined, and further preventing the child seated in the carrier 1 from falling down due to the over-inclination of the first frame 13 and the second frame 14, and also preventing the continued pivoting of the first frame 13 and the second frame 14 located in the same horizontal plane, so that the first frame 13 and the second frame 14 interfere with other parts of the carrier 1, such as the seat plate 60.

[0091] With reference to FIGS. 13, 14 and 19, in one embodiment, in order to enable the second locking member 26 to pass over the limiting portion 112 so as to enable the second frame body 14 to be folded relative to the first frame body 13, the first driving member 24 needs to be pivoted to the third position, and the first pivoting joint 20 can thereby enter the second unlocking state, the third abutting surface 244 has a greater depth relative to the second abutting surface 243, and after the abutting end 261 of the first locking pin 260 abuts against the third abutting surface 244, the distance between the locking end 262 and the inner side of the first rotating portion 11 is greater than the height by which the limiting portion 112 protrudes from the inner side of the first rotating portion 11, and the first locking pin 260 can pass over the limiting portion 112, and the limiting portion 112 no longer restricts the pivoting of the second pivoting portion 221 (the second frame body 14), i.e., the limiting portion 112 is no longer located on the rotation path of the second locking member 26 around the first pivoting axis L1.

[0092] With reference to FIG. 14, in the illustrated embodiment, the limiting portion 112 extends in the direction around the first pivoting axis L1, and the height by which the end of the limiting portion 112 close to the second locking hole 113 protrudes from the inner side of the first rotating portion 11 is greater than the height by which the end of the limiting portion 112 away from the second locking hole 113 protrudes from the inner side of the first rotating portion 11, and the height by which the end of the limiting portion 112 away from the second locking hole 113 protrudes from the inner side of the first rotating portion 11 is still slightly greater than the distance between the locking end 262 of the first locking pin 260 and the inner side of the first rotating portion 11 after the abutting end 261 of the first locking pin 260 abuts against the second abutting surface 243, so that when the first locking pin 260 moves from the end of the limiting portion 112 away from the second locking hole 113 to the end of the limiting portion 112 close to the second locking hole 113, i.e., when the second frame body 14 is unfolded relative to the first frame body 13, there is no greater obstruction.

[0093] For the first pivot part 211 (the first frame 13), in order to avoid interference with other components caused by excessive pivoting, with reference to Figs. 7, 8, 22 and 23, in an embodiment, the inner side of the first pivot part 211 is provided with a first stop part 213 protruding from the inner side of the first pivot part 211, and the inner side of the first rotating part 11 is further provided with a limiting post 114 protruding from the inner side of the first rotating part 11, and the end of the limiting post 114 away from the inner side of the first rotating part 11 is provided with a second stop part 118, when the first frame 13 is pivoted to a position where the first side of the first stop part 213 abuts against the first side of the second stop part 118, the first frame 13 is pivoted to a first limit position; when the first frame 13 is pivoted to a position where the second side of the first stop part 213 abuts against the second side of the second stop part 118, the first frame 13 reaches a second limit position; thus, the pivoting of the first frame 13 is limited between the first limit position and the second limit position by the abutment of the first stop part 213 and the second stop part 118. Optionally, when the first frame 13 is pivoted to be substantially horizontal, i.e. in the sleeping box mode, the first frame 13 reaches the first limit position; when the first frame 13 is pivoted to the pivoting position in the seat mode, the first frame 13 reaches the second limit position.

[0094] With reference to Fig. 13, in an embodiment, the first pivot joint 20 further comprises a third elastic member 272. The third elastic member 272 is arranged in the accommodation space and abuts against the first driving member 24 and the second pivot part 221 to continuously apply an elastic force to the first driving member 24, so that the first driving member 24 has a movement tendency of pivoting in the direction towards the first position. Optionally, the side of the second abutment face 243 away from the third abutment face 244 is provided with a third inclined face 245, the second abutment face 243 is connected to the first abutment face 247 via the third inclined face 245, and the second abutment face 243 is connected to the third abutment face 244 via a fourth inclined face 246. The third inclined face 245 and the fourth inclined face 246 both extend along the direction around the first pivot axis L1 and are arranged obliquely compared to the direction parallel to the first pivot axis L1. In the case where the first pivot joint 20 is in the first release state, at this time the abutment end 261 of the first locking pin 260 abuts against the second abutment face 243, when the first connecting seat 21 and the second connecting seat 22 are pivoted around the first pivot axis L1 to a position where the locking end 262 of the first locking pin 260 is aligned with the first locking hole 111 or the second locking hole 113 in the direction parallel to the first pivot axis L1, the third elastic member 272 drives the first driving member 24 to pivot in the direction towards the first position, the third inclined face 245 pushes and drives the first locking pin 260 to move in the direction away from the first driving member 24 until the first abutment face 247 pushes and drives the locking end 262 into the second locking hole 113, the first driving member 24 returns to the first position, and the first pivot joint 20 returns to the locked state.

[0095] Referring to FIGS. 13 and 14, when the first pivot joint 20 is in the second release state, at this time, the abutting end 261 of the first locking pin 260 abuts against the third abutting surface 244, when the first connecting seat 21 and the second connecting seat 22 are pivoted about the first pivot axis L1 to make the locking end 262 of the first locking pin 260 align with the part of the limiting portion 112 other than the end close to the second locking hole 113 in the direction parallel to the first pivot axis L1, the third elastic member 272 drives the first driving member 24 to pivot in the direction of the second position, the fourth inclined surface 246 pushes against and drives the first locking pin 260 to move in the direction away from the first driving member 24, so that the locking end 262 of the first locking pin 260 abuts against the fourth inclined surface 246; or when the first connecting seat 21 and the second connecting seat 22 are pivoted about the first pivot axis L1 to make the locking end 262 of the first locking pin 260 align with the inner side of the first rotating portion 11 in the direction parallel to the first pivot axis L1, the third elastic member 272 drives the first driving member 24 to pivot in the direction of the second position, the fourth inclined surface 246 pushes against and drives the first locking pin 260 to move in the direction away from the first driving member 24, so that the locking end 262 of the first locking pin 260 is close to the inner side of the first rotating portion 11.

[0096] It can be seen that, by the third inclined surface 245 and the fourth inclined surface 246, the first driving member 24 rotates from the third position to the second position, and then to the first position, drives the third inclined surface 245 and the fourth inclined surface 246 to abut against the abutting end 261 of the first locking pin 260, and rotates compared to the abutting end 261 of the first locking pin 260, thereby driving the second locking member 26 to move from the second unlocking position to the first unlocking position, and then to the locking position.

[0097] It can be seen that, by the third inclined surface 245 and the fourth inclined surface 246, the first driving member 24 rotates from the third position to the second position, and then to the first position, drives the third inclined surface 245 and the fourth inclined surface 246 to abut against the abutting end 261 of the first locking pin 260, and rotates compared to the abutting end 261 of the first locking pin 260, thereby driving the second locking member 26 to move from the second unlocking position to the first unlocking position, and then to the locking position.

[0098] Referring to FIGS. 9, 11 and 12, in one embodiment, in order for the user to be able to operate the first driving member 24 and pivot it, the carrier 1 is further provided with a release lock mechanism 50, by operating which the user can drive the pivoting of the first driving member 24. The release lock mechanism 50 comprises a pull handle 52 and a traction member 51. The pull handle 52 is pivotably arranged on the carrier 1, for example on the second frame body 14. It should be understood that arranging the pull handle 52 on the second frame body 14 is only an exemplary embodiment of the present application, and those skilled in the art can arrange the pull handle 52 on other suitable positions of the carrier 1 according to actual needs, for example on the first frame body 13, the armrest 283, the seat plate 60, etc. One end of the traction member 51 is connected to the first driving member 24, and the other end of the traction member 51 is operatively connected to the pull handle 52 indirectly. The pull handle 52 has a first pivoting stroke and a second pivoting stroke. When the pull handle 52 is pivoted by the first pivoting stroke, the pull handle 52 drives the first driving member 24 to move from the first position to the second position through the traction member 51; when the pull handle 52 is pivoted by the second pivoting stroke, the pull handle 52 drives the first driving member 24 to move from the first position to the third position through the traction member 51, and the second pivoting stroke is greater than the first pivoting stroke. Optionally, the traction member 51 is a driving steel wire. It can be understood that the driving steel wire is only an optional embodiment of the present application, and those skilled in the art can select a suitable traction member according to actual needs.

[0099] Referring to FIGS. 15 and 17, optionally, the release lock mechanism 50 can further comprise a safety push button 56. The second frame body 14 is provided with a stop portion 55. The safety push button 56 is arranged in a groove 53 on the pull handle 52 and can move in the groove 53 between a first moving position and a second moving position. In the case where the safety push button 56 is located at the first moving position, when the pull handle 52 is pivoted by the first pivoting stroke, the safety push button 56 abuts against the stop portion 55 to prevent the pull handle 52 from continuing to pivot. At this time, it is suitable to switch between the sleeping box mode and the seat mode. The safety push button 56 abuts against the stop portion 55 to avoid the user from excessively pivoting the pull handle 52, so that the first pivoting joint 20 enters the second release lock state incorrectly. In the case where the safety push button 56 is located at the second moving position, when the pull handle 52 is pivoted by the first pivoting stroke, the safety push button 56 will not abut against the stop portion 55 to allow the pull handle 52 to continue to pivot to complete the second pivoting stroke, so that the first pivoting joint 20 enters the second release lock state to fold the carrier 1. Optionally, a fourth elastic member 54 is arranged in the groove 53, which continuously applies an elastic force to the safety push button 56, so that the safety push button 56 has a movement tendency to move towards the first moving position, thereby avoiding the safety push button 56 from being forgotten at the second moving position.

[0100] Referring to FIGS. 15, 17, 32 and 33, in an embodiment according to the present application, the pull handle 52 is mounted on the second frame 14 via the mounting member 58. The pull handle 52 is operatively connected to a slide member 57 arranged in the second frame 14. The slide member 57 is connected to the first driving member 24 via the traction member 51. Referring to FIG. 33, the slide member 57 is provided with a guide slot 571 on one side thereof facing the pull handle 52, and the pull handle 52 is provided with a guide portion 521 on one side thereof facing the slide member 57, the guide portion 521 being fitted in the guide slot 571. The guide portion 521 and the guide slot 571 are shaped such that when the pull handle 52 is pivoted from the position shown in FIG. 11 to the position shown in FIG. 17, the guide portion 521 pushes against the guide slot 571 to drive the slide member 57 to move, and the movement of the slide member 57 drives the first driving member 24 to pivot through the traction member 51. In this embodiment, the pull handle 52 is provided with two guide portions 521 opposite to each other, and the second frame 14 is provided with two slide members 57, and the two guide portions 521 are fitted with the two slide members 57 respectively. When the pull handle 52 is pivoted from the position shown in FIG. 11 to the position shown in FIG. 17, the two guide portions 521 push against the two guide slots 571 respectively to drive the two slide members 57 to move towards each other.

[0101] Referring to FIGS. 17 and 19, when the pull handle 52 is pivoted to the state shown in FIG. 17 (pivoted by the second pivoting stroke), the user pushes the second frame 14 towards the first frame 13, the second locking teeth 222 in the second pivoting portion 221 are misaligned with the third locking teeth 231 of the first locking member 23, and the first locking member 23 cannot be returned into the second pivoting portion 221, so that the second frame 14 can be kept in the pivotable state relative to the first frame 13. The first locking pin 260 cannot be pivoted to the position aligned with the first locking hole 111 or the second locking hole 113, so that the abutting end 261 of the first locking pin 260 abuts against the fourth inclined surface 246 or the second abutting surface 243 or the third abutting surface 244 under the action of the third elastic member 272, and cannot abut against the third inclined surface 245 or the first abutting surface 247, and the locking end 262 of the first locking pin 260 abuts against the inner side of the limiting portion 112 or the first pivoting portion 11, so that the second frame 14 can be kept in the pivotable state relative to the first pivoting portion 11.

[0102] Referring to FIGS. 20 and 21, in the embodiment provided with the bracket 29, the bracket 29 is provided with a through hole 292 extending along the direction of the first pivot axis L1, the limiting post 114 protrudes from the inner side of the first rotating part 11 along the direction of the first pivot axis L1 and is arranged in the through hole 292, at least part of the circumferential surface 115 of the limiting post 114 is concave to form a notch 116, the notch 116 is provided with a stop surface 117, the included angle between the stop surface 117 and the first pivot axis L1 is almost 90°, which can be in the range of 75° to 85°. The bracket 29 is further provided with a third locking hole 293 communicating with the through hole 292, the third locking hole 293 is arranged on the hole wall of the through hole 292 and extends along the direction perpendicular to the first pivot axis L1, the fourth locking member 294 and the fifth elastic member 297 are arranged in the third locking hole 293, the fourth locking member 294 is movably connected with the second pivot part 221, specifically, the fourth locking member 294 is fixed relative to the second pivot part 221 in the direction around the first pivot axis L1, while the fourth locking member 294 is movable relative to the second pivot part 221 in the direction perpendicular to the first pivot axis L1, the fourth locking member 294 rotates with the second pivot part 221 relative to the limiting post 114, the fifth elastic member 297 biases the fourth locking member 294 so that the fourth locking member 294 abuts against the circumferential surface 115 of the limiting post 114 along the extending direction of the third locking hole 293. When the first driving member 24 is in the second position and the limiting post 114 abuts against the second locking member 26 in the direction around the first pivot axis L1, the fourth locking member 294 abuts against the stop surface 117 of the notch 116 in the direction around the first pivot axis L1 to limit the switching from the seat mode to the folding state, while when the first driving member 24 is in the third position and the second frame body 14 is folded relative to the first frame body 13, the fourth locking member 294 is disengaged from the stop surface 117 in the direction around the first pivot axis L1 and moves to the outside of the stop surface 117. Since the term "folding state" in the present application refers to the state that the included angle between the first frame body 13 and the second frame body 14 is less than 180°. Since the included angle between the stop surface 117 and the first pivot axis L1 is almost 90°, the user can only make the fourth locking member 294 disengage from the notch 116 and no longer abut against the stop surface 117 by exerting excessive force on the second frame body 14, so as to better avoid the accidental switching of the second frame body 14 from the seat mode to the folding state, and the fourth locking member 294 and the stop surface 117 provide tactile and audible feedback to the user during operation to prompt the user that the folding state is reached.

[0103] Optionally, the end of the fourth locking piece 294 is provided with a first guide slope 295 and a second guide slope 296 connected with each other. In the direction of moving from the sleeping bag mode to the seat mode, when the support 29 pivots around the first pivot axis L1, the first guide slope 295 abuts on the circumferential surface 115 of the limiting column 114, so as to reduce the contact area of the fourth locking piece 294 with the circumferential surface 115, and the curvature of the circumferential surface 115 of the limiting column 114 gradually decreases towards the notch 116, so as to guide the fourth locking piece 294 to move into the notch 116, so as to facilitate the second frame body 14 to switch from the horizontal sleeping bag mode state to the inclined seat mode state; when switching from the seat mode to the folding state, the second guide slope 296 abuts against the stop surface 117 of the notch 116, so as to guide the fourth locking piece 294 to move out of the notch 116 and no longer abut against the stop surface 117. For example, in the process of pivoting the first pivot joint 20 from the folding state to the seat mode, under the action of the fifth elastic piece 297, the fourth locking piece 294 continuously applies a pushing force to the circumferential surface 115 of the limiting column 114, and under the cooperation of the first guide slope 295 and the circumferential surface 115 of the limiting column 114, the pushing force is helpful for pivoting, so that the user can feel more labor-saving pivoting through tactile sensation. For example, when the first pivot joint 20 is pivoted to the seat mode, the fourth locking piece 294 enters the notch 116, and the user can obviously feel the touch feeling and clamping sound of the clamping locking, which helps to prompt the user that it has been unfolded in place. For example, when switching from the seat mode to the folding state, the user needs to apply a certain external force to make the second guide slope 296 cross the stop wall 117 of the notch 116, and there will be obvious tactile feeling and sound of material deformation and recovery during the crossing process, which helps to prompt the user that it has been unfolded from the unfolded position.

[0104] Referring to FIGS. 7, 8, 22 and 23, in one embodiment, the first pivot joint 20 further comprises a third connecting seat 28. One end of the third connecting seat 28 is formed as a third pivot portion 281, which is pivotably connected between the first pivot portion 211 and the second pivot portion 221 about the first pivot axis L1. The other end of the third connecting seat 28 is fixedly connected to another accessory, such as an armrest 283. To lock the pivot position of the third connecting seat 28, optionally, the inner side of the first pivot portion 211 is provided with a first positioning portion 214, the side of the second pivot portion 221 facing the first pivot portion 211 is provided with a second positioning portion 223, and the third pivot portion 281 is provided with a circular-arc-shaped movable slot 282. The first positioning portion 214 and the second positioning portion 223 are movable within the movable slot 282 about the first pivot axis L1. When the two ends of the movable slot 282 in the extending direction thereof abut against the first positioning portion 214 and the second positioning portion 223 at the same time, the third pivot portion 281, the first pivot portion 211 and the second pivot portion 221 are pivotally fixed relative to each other and can rotate synchronously relative to the first rotating portion 11. For example, when the first pivot portion and the second pivot portion are relatively fixed, the ends of the movable slot 282 abut against the first positioning portion 214 and the second positioning portion 223 at the same time, at this time, if the first pivot joint 20 is in the first unlocking state, the third pivot portion 281 (the armrest 283) and the second pivot portion 221 (the second frame 14) can be driven to pivot integrally by pivoting the first pivot portion 211 (the first frame 13), so as to realize the switching of the carrier 1 between the sleeping box mode and the seat mode; at this time, if the first pivot joint 20 is in the locked state, the third pivot portion 281 cannot be pivoted. When the second frame 14 is folded towards the first frame 13, the distance between the first positioning portion 214 and the second positioning portion 223 in the direction about the first pivot axis L1 gradually decreases, and the end of the movable slot 282 is no longer in abutment with the second positioning portion 223. The armrest 283 is folded towards the first frame 13 due to gravity, so that the end of the movable slot 282 moves to be in abutment with the second positioning portion 223 again.

[0105] Referring to FIGS. 24, 28 and 29, in one embodiment, the second pivot joint 30 is spaced apart from the first pivot joint 20, and the second pivot joint 30 comprises a fourth pivot portion 31. Optionally, the fourth pivot portion 31 is provided in a substantially disc-shaped structure. The fourth pivot portion 31 has a pivot side 311 and a mounting side 312 opposite to the pivot side 311. The pivot side 311 is coaxially connected to the second rotating portion 12 of the pivot base 10 and is pivotable about a second pivot axis L2, which is not collinear with the first pivot axis L1, and optionally, the second pivot axis L2 is parallel to the first pivot axis L1. Optionally, the second rotating portion 12 is provided in a substantially disc-shaped structure. In the present embodiment, the second pivot axis L2 is defined as a virtual connection between the centers of the fourth pivot portion 31 and the second rotating portion 12. The second pivot portion 221 comprises the trigger device 41, and the first linkage release mechanism 40 comprises a locking device 42. The locking device 42 is detachably connected to the fourth pivot portion 31 to lock or release the pivoting of the fourth pivot portion 31 relative to the second rotating portion 12. The contact and disengagement of the trigger device 41 and the locking device 42 respectively drive the locking and release of the locking device 42. Optionally, the trigger device 41 is a first pushing portion 411 provided on the outer peripheral surface 224 of the second pivot portion 221, and the first pushing portion 411 extends around the first pivot axis L1. The pivot base 10 is provided with a pushing groove 15, and the position of the pushing groove 15 is arranged such that the pivoting of the second pivot portion 221 can make the first pushing portion 411 enter or disengage the pushing groove 15. Optionally, the locking device 42 comprises a locking member 421 and a sixth elastic member 425. The locking member 421 has a locking portion 422 and a second driving portion 423, and is movably arranged in the second pivot joint 30. The pivot side 311 of the fourth pivot portion 31 is provided with a fourth locking hole 424, and the locking portion 422 can enter or disengage the fourth locking hole 424 to lock or release the pivoting of the fourth pivot portion 31 relative to the second rotating portion 12. The sixth elastic member 425 is arranged between the pivot base 10 and the locking member 421, and continuously applies an elastic force to the locking member 421, so that the locking member 421 has a movement tendency of disengaging the fourth locking hole 424. When the first pushing portion 411 enters the pushing groove 15 and contacts the locking member 421, the first pushing portion 411 drives the locking portion 422 of the locking member 421 to enter the fourth locking hole 424; when the trigger device 41 disengages the locking member 421, the sixth elastic member 425 drives the locking member 421 to disengage the fourth locking hole 424. Optionally, the first linkage release mechanism 40 further comprises a second driving member 43.The second driving member 43 is movably arranged between the first pivot joint 20 and the second pivot joint 30, specifically movably arranged in the pivot base 10. The second driving member 43 is provided with an abutting portion 431 and a first driving portion 432 opposite to each other. When the first pushing portion 411 enters the pushing slot 15 to abut against the abutting portion 431, the first driving portion 432 pushes against the second driving portion 423 to drive the locking portion 422 of the locking member 421 into the fourth locking hole 424. At this time, the second pivot joint 30 is in a locked state, and the fourth pivot portion 31 cannot be pivoted relative to the second rotating portion 12. When the first pushing portion 411 completely leaves the pivot base 10 by passing through the pushing slot 15, the first pushing portion 411 is disengaged from the abutting portion 431 of the second driving member 43. The sixth elastic member 425 drives the locking member 421 to disengage from the fourth locking hole 424, and drives the second driving portion 423 to push against the first driving portion 432 to drive the second driving member 43 to move in a direction away from the locking member 421. At this time, the second pivot joint 30 is switched from the locked state to an unlocked state, and the fourth pivot portion 31 can be pivoted relative to the second rotating portion 12. Optionally, the first linkage unlocking mechanism 40 further comprises a seventh elastic member 44. The seventh elastic member 44 continuously applies an elastic force to the second driving member 43, so that the second driving member 43 has a movement tendency away from the locking device 42. When the first pushing portion 411 is disengaged from the abutting portion 431 of the second driving member 43, the seventh elastic member 44 drives the second driving member 43 to move in a direction away from the locking device 42.

[0106] Referring to FIGS. 10 and 17, when the second frame 14 and the first frame 13 are in the unfolded state, that is, the first pivot portion 211 and the second pivot portion 221 are relatively fixed, whether in the seat mode or the sleeping box mode, the first pushing portion 411 is at least partially accommodated in the pushing slot 15 and used to abut against the abutting portion 431, and the second pivot joint 30 is still in the locked state. When the second frame 14 is folded towards the first frame 13, that is, the second pivot portion 221 rotates relative to the first pivot portion 211, the first pushing portion 411 completely leaves the pushing slot 15, so that the second pivot joint 30 is switched from the locked state to the unlocked state.

[0107] The movement direction of the second driving member 43 intersects with the rotation direction of the first pushing portion 411 of the second pivot portion 221 and the movement direction of the locking member 421. Specifically, the second driving member 43 moves in a direction perpendicular to the first pivot axis L1 and the second pivot axis L2, and the locking member 421 moves in a direction parallel to the second pivot axis L2.

[0108] Referring to FIGS. 25, 27, 30 and 31, in one embodiment, the second pivot joint 30 further comprises a mount 32 pivotably connected to the second rotating part 12 at a side facing away from the fourth pivot part 31. The mount 32 is detachably mounted on a clamping seat 91 of the frame 9. The clamping seat 91 is arranged on the folding joint 94 of the frame 9. Optionally, the mount 32 is provided with a clamping part 323 and a quick release switch 324, and the clamping seat 91 is provided with a clamping hole 93 (see FIG. 1) for clamping the clamping part 323. The quick release switch 324 is used to release the clamping between the clamping part 323 and the clamping hole 93.

[0109] In the present embodiment, the pivot side 311 of the fourth pivot part 31 is provided with a second push part 45, which is a substantially cylindrical boss protruding from the pivot side 311, at least a part of the circumferential side wall of the boss is concave to form a first push inclined surface 451. The second linkage release lock mechanism 70 comprises a third locking piece 46 and a release part 463. The third locking piece 46 is arranged in a substantially disc shape and is provided with a mounting through hole 464. The second push part 45 is inserted into the mounting through hole 464 so that the third locking piece 46 is sleeved on the second push part 45. The mounting through hole 464 is provided with a second push inclined surface 461 matched with the first push inclined surface 451. Both the first push inclined surface 451 and the second push inclined surface 461 extend in a direction around the second pivot axis L2 and are arranged obliquely compared with a direction parallel to the second pivot axis L2. In other embodiments, only the first push inclined surface 451 or the second push inclined surface 461 can be provided.

[0110] The third locking piece 46 is arranged to be movable along the second pivot axis L2 between a pivot position and a stop position. Optionally, a fourth locking tooth 121 is arranged in the inner ring of the second rotating part 12, a fifth locking tooth 321 is arranged in the inner ring of the mount 32, and the outer periphery of the third locking piece 46 is provided with a sixth locking tooth 462. When the third locking piece 46 moves so that the sixth locking tooth 462 simultaneously engages with the fourth locking tooth 121 and the fifth locking tooth 321, the third locking piece 46 prevents the relative pivoting of the pivot seat 10 and the mount 32. At this time, the third locking piece 46 moves to the stop position. When the third locking piece 46 moves so that the sixth locking tooth 462 only engages with the fifth locking tooth 321, the third locking piece 46 no longer limits the relative pivoting of the pivot seat 10 and the mount 32. At this time, the third locking piece 46 moves to the pivot position. It can be seen from the above that the third locking piece 46 is relatively fixed with the mount 32 in the direction around the second pivot axis L2.

[0111] The release part 463 is arranged on the side of the third locking member 46 facing the mounting base 32. A release hole 322 is arranged on the mounting base 32 in alignment with the release part 463 in a direction parallel to the second pivot axis L2. When the third locking member 46 is moved to the pivoted position, the release part 463 protrudes from the side of the mounting base 32 facing the clamping seat 91 through the release hole 322, and presses the release button 92 of the clamping seat 91 to release the folding joint 94 of the frame 9.

[0112] Referring to FIGS. 26 and 29, in one embodiment, an eighth elastic member 47 is further arranged between the third locking member 46 and the mounting base 32. One end of the eighth elastic member 47 abuts against the inner side of the mounting base 32, and the other end of the eighth elastic member 47 abuts against the side of the third locking member 46 facing the mounting base 32. The eighth elastic member 47 continuously applies an elastic force to the third locking member 46, so that the third locking member 46 has a movement tendency of moving towards the second rotating part 12.

[0113] Optionally, the mounting side 312 of the fourth pivot part 31 is fixedly connected with a seat plate 60. A connecting member 63 is arranged between the seat plate 60 and the second frame body 14. The second frame body 14 pivots to pull the seat plate 60 through the connecting member 63 to drive the seat plate 60 to pivot. Optionally, the connecting member 63 is a seat cloth arranged between the seat plate 60 and the second frame body 14. When the second frame body 14 pivots relative to the first frame body 13, the second frame body 14 drives the seat cloth to pull the seat plate 60, so that the seat plate 60 pivots about the second pivot axis L2. Optionally, a limiting through slot 61 is arranged on the part where the fourth pivot part 31 and the seat plate 60 are connected with each other, and a limiting pin 62 is fixedly connected to the second rotating part 12 through the limiting through slot 61. When the locking part 422 is disengaged from the fourth locking hole 424, the limiting pin 62 abuts against the end of the limiting through slot 61 to limit the maximum angle of the seat plate 60 pivoting relative to the second rotating part 12. When the limiting pin 62 abuts against the end of the limiting through slot 61, the continuous pivoting of the second frame body 14 towards the first frame body 13 simultaneously pulls the seat plate 60 and the second rotating part 12 through the connecting member 63, so that the seat plate 60 and the clamping seat 10 jointly pivot about the second pivot axis L2. Optionally, a handle 64 is arranged on the bottom side of the seat plate 60. A user can pull the handle 64 to make the seat plate 60 pivot relative to the second rotating part 12. When the limiting pin 62 abuts against the end of the limiting through slot 61, the user can pull the handle 64 to make the seat plate 60 and the clamping seat 10 jointly pivot about the second pivot axis L2. In the folded state, the handle 64 can also be used to carry the stroller.

[0114] The mode switching of the stroller, the linkage folding and unfolding process of the stroller and the frame, and the disassembly and assembly process of the stroller on the frame according to one embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0115] Referring to FIG. 1, the carrier 1 is mounted to the frame 9 by engaging the mounting seat 32 of the carrier 1 with the clamping seat 91 of the folding joint 94 of the frame 9. At this time, the clamping portion 323 is clamped with the clamping hole 93, and the carrier 1 is fixedly connected to the frame 9. In FIG. 1, the carrier 1 is shown in a seat mode. It can be understood by those skilled in the art that the carrier 1 can also be in a reclining mode or a sleeping box mode. For the convenience of description, it is assumed that the carrier 1 is initially in a sleeping box mode.

[0116] Referring to FIGS. 9, 10, 11 and 15, the user pivots the pull handle 52 through a first pivoting stroke, so that the pull handle 52 is pivoted from the initial position shown in FIG. 11 to the position shown in FIG. 15, at which time the safety push button 56 abuts against the stop portion 55, and the pull handle 52 cannot continue to be pivoted. In this process, the pivoting of the pull handle 52 drives the traction member 51 to drive the first driving member 24 from the first position to the second position, thereby causing the first pivoting joint 20 to enter the first unlocking state from the locked state. At this time, the user can drive the first frame body 13 or the second frame body 14, so that the first frame body 13 and the second frame body 14 are pivoted as a whole about the first pivoting axis L1, so as to cause the carrier 1 to exit the sleeping box mode. When the first frame body 13 and the second frame body 14 are pivoted as a whole to a position at which the first locking pin 260 is aligned with the second locking hole 113, under the action of the third elastic member 272, the first driving member 24 is pivoted back to the first position, so that the first abutting face 247 abuts against the abutting end 261 of the first locking pin 260, thereby driving the locking end 262 of the first locking pin 260 to enter the second locking hole 133, at which time the carrier 1 enters the seat mode, and the first pivoting joint 20 returns to the locked state. The pivoting of the first driving member 24 pulls the traction member 51, so that the traction member 51 drives the pull handle 52 to return to the initial position shown in FIG. 11. Repeating the above operation can pivot the first frame body 13 or the second frame body 14 as a whole, so as to switch the carrier 1 between the sleeping box mode, the seat mode and the reclining mode.

[0117] Referring to FIGS. 9, 11 and 17, the user pushes the safety push button 56 from the first moving position shown in FIG. 11 to the second moving position shown in FIG. 17, and then pivots the pull handle 52 through a second pivoting stroke, so that the pull handle 52 is pivoted from the initial position shown in FIG. 11 to the position shown in FIG. 17, the pivoting of the pull handle 52 drives the first driving member 24 into the third position, thereby causing the first pivoting joint 20 to enter the second unlocking state. At this time, the user can pivot the second frame body 14 towards the direction T1, so that the first pushing part 411 is disengaged from the pushing groove 15 and no longer exerts force on the locking member 421, thereby causing the second pivoting joint 30 to enter the unlocking state to allow the seat plate 60 to pivot. Continued pivoting of the second frame body 14 along the direction T1 drives the seat plate 60 to pivot along the direction T1 under the traction of the connecting member 63, such as a seat cloth, and the continued pivoting of the seat plate 60 along the direction T1 drives the pivot base 10 to rotate about the second pivoting axis L2.

[0118] During the folding of the carrier 1, the pivoting of the seat plate 60 causes the first pushing inclined surface 451 of the second pushing part 45 to press the second pushing inclined surface 461 of the third locking member 46, so as to drive the third locking member 46 to move from the stop position to the pivoting position, thereby allowing the relative pivoting of the pivot base 10 and the mounting base 32. At the same time, the third locking member 46 moves to the pivoting position, the release part 463 protrudes from the side of the mounting base 32 facing the clamping base 91 through the unlocking hole 322, and presses the unlocking button 92 of the clamping base 91, so that the folding joint 94 of the frame 9 is unlocked, thereby allowing the handle 95, the front leg 96 and the rear leg 97 of the frame 9 to pivot relative to each other, achieving the folding of the frame 9. In embodiments according to the present application, the folding joint 94 can use any suitable structure known to those skilled in the art, which is not limited in the present application.

[0119] In the above manner, the user only needs to operate the pull handle 52 and drive the second frame body 14 to achieve the linkage folding of the carrier 1 and the frame 9, without the need to disassemble the carrier 1 from the frame 9 during the folding process, the folding process is simple to operate, and the folded carrier 1 and frame 9 can be stored together, saving storage space. When the user needs to use the stroller, the user only needs to unfold the carrier 1 first, and then unfold the frame 9 to complete the unfolding of the stroller.

[0120] If the carrier 1 is to be disassembled from the frame 9, only the quick release switch 324 on the mounting base 32 needs to be operated to release the clamping between the clamping part 323 and the clamping hole 93, the disassembly process is simple to operate and convenient to use. In embodiments according to the present application, the quick release switch 324 can use any suitable structure known to those skilled in the art, which is not limited in the present application.

[0121] The person skilled in the art can understand that, in the linkage folding process described above, it is not necessary to manually keep the pull handle 52 in the state shown in FIG. 17 all the time. Because the first locking pin 260 will not be pivoted to the position aligned with the first locking hole 111 or the second locking hole 113 during the pivoting of the second frame body 14, the second locking member 26 cannot be moved to the locking position, and the second frame body 14 can remain in the pivotable state relative to the first rotating part 11, so that the traction member 51 will not drive the pull handle 52 to the initial position. In this process, the second locking teeth 222 in the second pivoting part 221 are misaligned with the third locking teeth 231 of the first locking member 23, and the first locking member 23 cannot return to the second pivoting part 221, so that the second frame body 14 can remain in the pivotable state relative to the first frame body 13. Further, after folding, the first locking pin 260 will not be pivoted to the position aligned with the first locking hole 111 or the second locking hole 113, the second locking teeth 222 in the second pivoting part 221 are misaligned with the third locking teeth 231 of the first locking member 23, so that the second frame body 14 can remain in the pivotable state relative to the first rotating part 11, and the second frame body 14 can remain in the pivotable state relative to the first frame body 13, to facilitate subsequent unfolding of the carrier 1.

[0122] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0123] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A carrier, characterized by, comprising: a first pivot joint having a first pivot part and a second pivot part pivoted about a first pivot axis; a second pivot joint having a fourth pivot part and a second rotation part pivoted to each other about a second pivot axis, the first pivot axis and the second pivot axis being non-collinear; a first linkage release mechanism, when the first pivot part and the second pivot part are relatively fixed, the first linkage release mechanism locking the fourth pivot part and the second rotation part to restrict the fourth pivot part from rotating relative to the second rotation part, when the second pivot part rotates relative to the first pivot part, the first linkage release mechanism releasing the locking of the fourth pivot part and the second rotation part to allow the fourth pivot part to rotate relative to the second rotation part, and the rotation of the second pivot part driving the rotation of the fourth pivot part; and a second linkage release mechanism, the rotation of the fourth pivot part driving the movement of the second linkage release mechanism.

2. The carrier of claim 1, wherein: the first linkage release mechanism comprises a second driving member movably arranged between the first pivot joint and the second pivot joint, and a locking member movably arranged at the second pivot joint, and a moving direction of the second driving member intersects with a rotating direction of the second pivot part and a moving direction of the locking member; when the first pivot part and the second pivot part are relatively fixed, the second pivot part abuts against the second driving member, the second driving member abuts against the locking member, and the locking member engages the fourth pivot part and the second rotation part to restrict the fourth pivot part from rotating relative to the second rotation part; when the second pivot part rotates relative to the first pivot part, the second pivot part is spaced apart from the second driving member, and the locking member disengages the fourth pivot part to allow the fourth pivot part to rotate relative to the second rotation part.

3. The carrier of claim 2, wherein: the first pivot axis and the second pivot axis are parallel to each other, the second pivot part is provided with a first pushing part extending with the second pivot part about the first pivot axis, the second driving member moves along a direction perpendicular to both the first pivot axis and the second pivot axis, and the locking member moves along a direction parallel to the second pivot axis.

4. The carrier of claim 1, wherein: the first pivot joint further comprises: a first rotation part pivoted to the second pivot part about the first pivot axis; a first locking member having a locking position and a release position, when the first locking member is at the locking position, the first locking member restricts the first pivot part and the second pivot part from rotating relative to each other, and when the first locking member is at the release position, the first locking member allows the first pivot part and the second pivot part to rotate relative to each other. ​ a second locking member having a locking position and an unlocking position, when the second locking member is in the locking position, the second locking member restricts relative rotation between the second pivot part and the first rotating part, when the second locking member is in the unlocking position, the second locking member allows relative rotation between the second pivot part and the first rotating part; and a first driving member having a first position, a second position and a third position, when the first driving member is in the first position, the first locking member is in the locking position, and the second locking member is in the locking position; when the first driving member is in the second position, the first locking member is in the locking position, the second locking member is in the unlocking position, and the first pivot part and the second pivot part are relatively fixed to rotate together relative to the first rotating part; when the first driving member is in the third position, the first locking member is in the unlocking position, and the second locking member is in the unlocking position.

5. The carrier according to claim 4, wherein the first driving member rotates around the first pivot axis, the first locking member and the second locking member move in directions parallel to the first pivot axis, the first locking member and the second locking member are located on two sides of the first driving member in the directions parallel to the first pivot axis, the first locking member moves from the locking position to the unlocking position in a direction away from the first driving member, and the second locking member moves from the locking position to the unlocking position in a direction close to the first driving member.

6. The carrier according to claim 5, wherein the first driving member rotates from the first position to the third position to drive the first locking member to move from the locking position to the unlocking position, and the first driving member rotates from the third position to the first position to drive the second locking member to move from the unlocking position to the locking position.

7. The carrier according to claim 5, wherein the first driving member or the first locking member is provided with a slope extending in a direction around the first pivot axis and inclined relative to a direction parallel to the first pivot axis, the first driving member rotates from the first position to the third position to drive the slope to abut and rotate relative to one of the first driving member and the first locking member, thereby driving the first locking member to move from the locking position to the unlocking position.

8. The carrier according to claim 4, wherein a side of the first rotating part facing the second locking member is provided with a first locking hole and a second locking hole, the first locking hole and the second locking hole are spaced apart in a direction around the first pivot axis, the second locking member is movably connected with the second pivot part and fixed relative to the second pivot part in the direction around the first pivot axis. When the first driving member is in the first position, the second locking member enters the first locking hole or the second locking hole to limit the relative rotation between the second pivoting part and the first rotating part, and when the first driving member is in the second position or the third position, the second locking member is disengaged from the first locking hole and the second locking hole to allow the relative rotation between the second pivoting part and the first rotating part.

9. The carrier of claim 4, wherein, a limiting part is arranged on a side of the first rotating part facing the second locking member, the second locking member is movably connected with the second pivoting part and is fixed relative to the second pivoting part in the direction around the first pivoting axis, when the first driving member is in the second position, the second locking member rotates relative to the first rotating part along with the second pivoting part, the limiting part is located in the direction of rotation of the second locking member around the first pivoting axis, and blocks the rotation of the second locking member relative to the first rotating part, thereby blocking the rotation of the second pivoting part and the first pivoting part relative to the first rotating part.

10. The carrier of claim 9, wherein, the unlocking position includes a first unlocking position and a second unlocking position, when the first driving member is in the second position, the second locking member is in the first unlocking position, and the limiting part is located in the direction of rotation of the second locking member around the first pivoting axis, and when the first driving member is in the third position, the second locking member is in the second unlocking position, and the limiting part is not located in the stroke of the second locking member around the first pivoting axis.

11. The carrier of claim 4, wherein, the first pivoting part rotates relative to the first rotating part between a first limit position and a second limit position; the first pivoting part is provided with a first stop part, and the first rotating part is provided with a second stop part, when a first side of the first stop part abuts against a first side of the second stop part, the first pivoting part is located in the first limit position, and when a second side of the first stop part abuts against a second side of the second stop part, the first pivoting part is located in the second limit position.

12. The carrier of claim 4, wherein, Further comprising: a release mechanism, the release mechanism comprising: a traction member, one end of the traction member being connected to the first driving member; and a pull handle, the pull handle having: a first pivoting stroke, when the pull handle is pivoted by the first pivoting stroke, the pull handle drives the first driving member to move from the first position to the second position through the traction member; and a second pivoting stroke, when the pull handle is pivoted by the second pivoting stroke, the pull handle drives the first driving member to move from the first position to the third position through the traction member, the second pivoting stroke being greater than the first pivoting stroke.

13. The carrier of claim 12, wherein, the carrier further comprises a stop part, the release mechanism further comprises: a safety push button, the safety push button being movable relative to the pull handle between a first moving position and a second moving position, When the safety push button is in the first moving position, the safety push button abuts against the stop portion when the pull handle pivots the first pivoting stroke, so as to prevent the pull handle from continuing to pivot; When the safety push button is in the second moving position, the safety push button does not abut against the stop portion when the pull handle pivots the first pivoting stroke, so as to allow the pull handle to continue to pivot to complete the second pivoting stroke.

14. The carrier of claim 1, wherein: the first pivoting joint further comprises a third pivoting portion, the third pivoting portion being pivotally connected to the first connecting seat and the second connecting seat about the first pivoting axis, the third pivoting portion is provided with a movable slot, the first connecting seat is provided with a first positioning portion extending into the movable slot, the second connecting seat is provided with a second positioning portion extending into the movable slot, the first positioning portion and the second positioning portion are movable within the movable slot about the first pivoting axis, when the first pivoting portion is relatively fixed with the second pivoting portion, two ends of the extension direction of the movable slot are respectively in abutment with the first positioning portion and the second positioning portion, the third pivoting portion, the first pivoting portion and the second pivoting portion are relatively fixed, when the first pivoting portion is relatively rotated with the second pivoting portion, at least one end of the extension direction of the movable slot is separated from at least one of the first positioning portion and the second positioning portion, so that the third pivoting portion can be rotated relative to both the first pivoting portion and the second pivoting portion.

15. The carrier of claim 1, wherein: the second pivoting joint further comprises a mounting seat, the mounting seat being pivotally connected to the second rotating portion, the second linkage release lock mechanism comprises a third locking member, the third locking member having a pivoting position and a stop position, when the third locking member is in the pivoting position, the third locking member allows the second rotating portion and the mounting seat to be relatively pivoted, when the third locking member is in the stop position, the third locking member prevents the mounting seat and the connecting seat from being relatively pivoted, rotation of the fourth pivoting portion drives the third locking member to move from the stop position to the pivoting position.

16. The carrier of claim 15, wherein: the fourth pivoting portion or the third locking member is provided with a pushing inclined surface, the pushing inclined surface extends in a direction about the second pivoting axis and is obliquely arranged compared to a direction parallel to the second pivoting axis, rotation of the fourth pivoting portion drives the pushing inclined surface to abut against and rotate relative to one of the first driving member and the first locking member, thereby driving the third locking member to move from the stop position to the pivoting position.

17. The carrier of claim 16, wherein: The fourth pivot part is provided with a second pushing part extending along the second pivot axis, the third locking member is provided with a mounting through hole for the second pushing part to pass through, and a circumferential surface of the second pushing part is provided with the pushing inclined surface, and rotation of the fourth pivot part drives the pushing inclined surface to abut against a hole wall of the mounting through hole.

18. The carrier of claim 15, wherein, The first pivot joint further comprises a first rotating part, the first rotating part is pivoted with the second pivot part around the first pivot axis, the first rotating part and the second rotating part are connected with each other, and the first pivot joint and the second rotating part can be pivoted relative to the mounting seat together when the third locking member is in the pivoted position.

19. The vehicle of claim 1, wherein, Further comprising: a second frame body connected with the second pivot part; a seat plate connected with the fourth pivot part; and a connecting member connecting the second frame body and the seat plate, when the second pivot part rotates relative to the first pivot part, the second frame body drives the seat plate to rotate through the connecting member.

20. A cart characterized by, comprising: the carrier of any one of claims 1 to 19; and a vehicle frame, wherein the carrier is detachably mounted on the vehicle frame, the second linkage release mechanism is moved to act on the vehicle frame, thereby allowing the vehicle frame to be folded.

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