Support apparatus and child carrier

Abstract

A support apparatus (10), comprising a first frame body (100), a second frame body (200), pivot joints (300) and a first locking mechanism. Each pivot joint comprises a first pivot base (310) arranged on the first frame body and a second pivot base (320) arranged on the second frame body. The first pivot bases are pivotally connected to the second pivot bases, such that the first frame body is pivotally connected to the second frame body, so as to allow the support apparatus to be switchable between an unfolded state and a folded state. The first locking mechanism is arranged between the first pivot bases and the second pivot bases, and can lock or unlock relative pivoting between the first frame body and the second frame body.

Description

Support device and child carrier TECHNICAL FIELD

[0001] The present application relates to the field of children's products, and in particular to a support device and a child carrier comprising the same. BACKGROUND

[0002] The child carriers on the market with a support device (for example, a baby stroller) are widely loved by consumers, and the child carrier can be adapted to different carrying devices (for example, a baby basket) through the support device. During the folding storage of the child carrier, the support device also needs to be folded to ensure that the overall volume occupies a relatively small space, and at the same time, it is convenient to use during unfolding. However, the folding mechanism of the current support device is relatively complex, and it is difficult to achieve a smaller volume of folding, which cannot meet the use needs of consumers. SUMMARY

[0003] Therefore, it is necessary to provide a support device with simple folding operation and small volume after folding, and a child carrier comprising the same.

[0004] The first aspect of the present application provides a support device, which comprises a first frame, a second frame, a pivot joint and a first locking mechanism. The pivot joint comprises a first pivot seat provided on the first frame and a second pivot seat provided on the second frame. The first pivot seat and the second pivot seat are pivoted, so that the first frame and the second frame are pivotally connected to allow the support device to be switchable between an unfolded state and a folded state. The first locking mechanism is arranged between the first pivot seat and the second pivot seat, and can lock or unlock the relative pivoting between the first frame and the second frame.

[0005] In some embodiments, one of the first pivot seat and the second pivot seat is provided with a limiting portion. The other one of the first pivot seat and the second pivot seat is provided with an abutting portion. The abutting portion cooperates with the limiting portion, so that the support device is kept in the unfolded state or the folded state.

[0006] In some embodiments, the first locking mechanism comprises: an engaging portion provided on one of the first pivot seat and the second pivot seat; and a first pushing portion and a second pushing portion provided on the other one of the first pivot seat and the second pivot seat and spaced apart along the circumference of the pivot joint. When the support device is in the unfolded state, the engaging portion is engaged with the first pushing portion, thereby limiting the relative pivoting of the first pivot seat and the second pivot seat in the folding direction of the support device. When the support device is in the folded state, the engaging portion is engaged with the second pushing portion, thereby limiting the relative pivoting of the first pivot seat and the second pivot seat in the unfolding direction of the support device.

[0007] In some embodiments, the engaging portion, the first pushing portion and the second pushing portion are arranged in a radial direction of the pivot joint, separately from the limiting portion and the abutting portion.

[0008] In some embodiments, the engaging portion, the first pushing portion and the second pushing portion are each an arc-shaped protrusion extending in a circumferential direction of the pivot joint.

[0009] In some embodiments, the first locking mechanism comprises: a first locking member arranged between the first pivot seat and the second pivot seat and movable in an axial direction of the pivot joint between a first locking position and a first unlocking position; a first locking groove arranged on a side of the first pivot seat facing the second pivot seat, and a second locking groove arranged on a side of the second pivot seat facing the first pivot seat. The first locking member has a first locking portion protruding towards a circumferential wall of the first pivot seat and the second pivot seat. When the first locking member is in the first locking position, the first locking portion is engaged in the first locking groove and the second locking groove at the same time; when the first locking member is in the first unlocking position, the first locking portion is disengaged from one of the first locking groove and the second locking groove.

[0010] In some embodiments, the first locking mechanism further comprises: a driving member arranged between the first locking member and the first pivot seat and in driving connection with the first locking member; and an operating member arranged on the first frame body and in operating connection with the driving member. The operating member, when operated, drives the first locking member to move in a direction close to the second pivot seat through the driving member, so that the first locking member is disengaged from the first locking groove.

[0011] In some embodiments, a side of the first pivot seat facing the second pivot seat is provided with a sliding groove extending in a radial direction of the pivot joint, and the driving member is slidably arranged in the sliding groove. A side of the sliding groove facing the driving member has a first inclined surface, and a side of the driving member facing the sliding groove has a second inclined surface matching and contacting the first inclined surface. The operating member, when operated, drives the first locking member to move towards the second pivot seat while pulling the driving member to slide along the sliding groove.

[0012] In some embodiments, a first elastic member is arranged between the first locking member and the second pivot seat, and the first elastic member biases the first locking member towards the first pivot seat.

[0013] In some embodiments, the pivot joint further comprises a mounting base located on a side of the second pivot base distal to the first pivot base and pivotally connected to the second pivot base. The support device further comprises a second locking mechanism comprising a second locking member disposed between the second pivot base and the mounting base. The second locking member is movable between a second locked position and a second unlocked position, wherein when the second locking member is in the second locked position, the second locking member locks against relative pivoting between the second pivot base and the mounting base, and when the second locking member is in the second unlocked position, the second locking member allows relative pivoting between the second pivot base and the mounting base. The first pivot base is drivingly connected to the second locking member, and when the support device is switched from the unfolded state to the folded state, the first pivot base drives the second locking member to move from the second locked position to the second unlocked position.

[0014] In some embodiments, a first protruding post is disposed on a side of the first pivot base facing the second pivot base, and a first helical surface is disposed on an end of the first protruding post distal to the first pivot base. The second pivot base is provided with a connecting hole. The second locking member is provided with a driving hole having a second helical surface disposed on an inner wall thereof matching the first helical surface. The first protruding post is inserted into the driving hole through the connecting hole, and the first helical surface is in contact with the second helical surface to drivingly connect the first pivot base to the second locking member.

[0015] In some embodiments, the mounting base is provided with a release hole, and the second locking member is provided with a release portion protruding towards the mounting base on a side thereof facing the mounting base. The mounting base is configured to be clamped on a clamping base of a child carrier, and when the mounting base is clamped on the clamping base, the mounting base is disposed opposite a folding release locking member of a carrier frame body of the child carrier. When the second locking member is moved from the second locked position to the second unlocked position, the release portion pushes the folding release locking member through the release hole to allow the carrier frame body to be folded.

[0016] In some embodiments, the first locking mechanism comprises a third locking member disposed between the first pivot seat and the second pivot seat, the third locking member being movable along a radial direction of the pivot joint between a third locked position and a third unlocked position. The first pivot seat is provided with a fifth locking slot, and the second pivot seat is provided with two sixth locking slots which are rotationally symmetrical with respect to a folding angle of the support device. When the third locking member is in the third locked position, the third locking member is engaged in the fifth locking slot and one of the two sixth locking slots at the same time, thereby preventing relative pivoting of the first pivot seat and the second pivot seat. When the third locking member is in the third unlocked position, the third locking member is disengaged from the sixth locking slots, thereby allowing relative pivoting of the first pivot seat and the second pivot seat.

[0017] In some embodiments, the second pivot seat is provided with a limiting portion. The first pivot seat is provided with an engaging member. The engaging member is movable between an engaged position and a disengaged position with respect to the first pivot seat, and has a pushing end and an engaging end which are oppositely disposed in the moving direction of the engaging member. When the engaging member is in the engaged position, the engaging end abuts against the limiting portion to limit relative pivoting of the first pivot seat and the second pivot seat; when the engaging member is in the disengaged position, the engaging end is disengaged from the limiting portion, and the pushing end is exposed outside the first pivot seat.

[0018] In some embodiments, the second pivot seat is provided with a limiting portion. The first pivot seat is provided with an engaging hole which extends in an axial direction of the pivot joint. The support device further comprises an engaging member which is inserted into the engaging hole and is capable of sliding along the extending direction of the engaging hole between an engaged position and a disengaged position. The engaging member has a pushing end and an engaging end which are oppositely disposed along the extending direction of the engaging hole, and the engaging end is closer to the second pivot seat than the pushing end. When the support device is in the unfolded state and the engaging member is in the engaged position, the engaging end protrudes from one end of the engaging hole which is close to the second pivot seat and abuts against the limiting portion, so that the support device is kept in the unfolded state. When the engaging member is in the disengaged position, the engaging end retreats into the engaging hole, and the pushing end protrudes from the other end of the engaging hole which is away from the second pivot seat.

[0019] The second aspect of the present application also provides a child carrier, which comprises a carrier frame, a carrying device, a supporting device and a misuse prevention mechanism. The carrying device is used for carrying a child. The supporting device is used for mounting the carrying device on the carrier frame and supporting the carrying device. The misuse prevention mechanism is arranged between the carrying device and the supporting device. When the carrying device is directed towards a first direction relative to the supporting device, the misuse prevention mechanism allows the carrying device to be mounted on the supporting device. When the carrying device is directed towards a second direction relative to the supporting device, the misuse prevention mechanism prevents the carrying device from being mounted on the supporting device.

[0020] In some embodiments, the misuse prevention mechanism is a protruding structure arranged on the supporting device. When the carrying device is directed towards the first direction relative to the supporting device, the protruding structure and the carrying device are mutually avoided to allow the carrying device to be mounted on the supporting device. When the carrying device is directed towards the second direction relative to the supporting device, the protruding structure and at least part of the carrying device are in abutment to prevent the carrying device from being mounted on the supporting device.

[0021] In some embodiments, the protruding structure comprises a first protrusion. The carrying device has an avoiding portion and a first abutting portion. In the first direction, the avoiding portion is located in front of the first abutting portion. When the carrying device is directed towards the first direction relative to the supporting device, the first protrusion is inserted into the avoiding portion to allow the carrying device to be mounted on the supporting device. When the carrying device is directed towards the second direction, the first protrusion is in abutment with the first abutting portion to prevent the carrying device from being mounted on the supporting device.

[0022] In some embodiments, the avoiding portion is an avoiding groove, and the first abutting portion is an abutting protrusion.

[0023] In some embodiments, the protruding structure further comprises a second protrusion. The carrying device is provided with a second abutting portion. When the carrying device is directed towards the first direction relative to the supporting device, the second protrusion and the second abutting portion are mutually staggered in the first direction to allow the carrying device to be mounted on the supporting device. When the carrying device is directed towards the second direction relative to the supporting device, the second protrusion and the second abutting portion are in abutment in the first direction to prevent the carrying device from being mounted on the supporting device.

[0024] In some embodiments, the supporting device comprises a first frame, a second frame and a pivot joint. The first frame and the second frame are pivotably connected through the pivot joint. The second protrusion is arranged at the pivot joint. The carrying device comprises a carrying body, a handle and a pivot seat. The handle is rotatably mounted on the carrying body through the pivot seat. The pivot seat forms the second abutting portion.

[0025] In some embodiments, in the first direction, the maximum distance from the edge of the first frame body to the second protrusion is a first distance; in the first direction, the maximum distance from the edge of the second frame body to the second protrusion is a second distance; the first distance is greater than the second distance, or the second distance is greater than the first distance.

[0026] In some embodiments, the two pivot seats are provided, and the two ends of the handle are respectively pivoted to the opposite sides of the bearing device through the two pivot seats; the two pivot joints are provided, and the two ends of the first frame body are respectively pivoted to the two ends of the second frame body through the two pivot joints; the two pivot joints are respectively provided with the second protrusions, and the two pivot joints respectively form the two second abutting portions; when the bearing device is moved towards the first direction relative to the support device, the two second protrusions and the two second abutting portions are respectively staggered in the first direction to allow the bearing device to be mounted on the support device; when the bearing device is moved towards the second direction relative to the support device, the two second protrusions and the two second abutting portions are respectively abutted in the first direction to prevent the bearing device from being mounted on the support device.

[0027] The third aspect of the present application further provides a child carrier, which comprises the above support device. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations to the present application.

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0030] In addition, the drawings are not drawn in a 1:1 ratio, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn in true proportions. In the drawings:

[0031] FIG. 1 is a perspective view of a child carrier according to a first embodiment of the present application;

[0032] FIG. 2 is an exploded view of the child carrier of FIG. 1;

[0033] FIG. 3 is a side view of the child carrier of FIG. 1 in an unfolded state;

[0034] Fig. 4 is a side view of the child carrier of Fig. 1 in a collapsed state;

[0035] Fig. 5 is a side view of a support device according to a first embodiment of the present application in an expanded state;

[0036] Fig. 6 is a side view of the support device according to the first embodiment of the present application in a collapsed state;

[0037] Fig. 7 is an exploded view of a pivot joint according to the first embodiment of the present application;

[0038] Fig. 8 is a cross-sectional view of the pivot joint taken along a central axis of a first support rod of the support device according to the first embodiment of the present application in the expanded state;

[0039] Fig. 9 is a cross-sectional view of the pivot joint taken along the central axis of the first support rod of the support device according to the first embodiment of the present application in the collapsed state;

[0040] Fig. 10 is a side view of a support device according to a second embodiment of the present application in an expanded state;

[0041] Fig. 11 is a side view of the support device according to the second embodiment of the present application in a collapsed state;

[0042] Fig. 12 is a perspective view of a first pivot socket, a first locking member and a first elastic member according to the second embodiment of the present application;

[0043] Fig. 13 is a perspective view of a second pivot socket and a driving member according to the second embodiment of the present application;

[0044] Fig. 14 is a cross-sectional view of the pivot joint with the first locking member in a first locking position according to the second embodiment of the present application;

[0045] Fig. 15 is a cross-sectional view of the pivot joint with the first locking member in a first unlocking position according to the second embodiment of the present application;

[0046] Fig. 16 is a side view of a support device according to a third embodiment of the present application in an expanded state and having a first support length;

[0047] Fig. 17 is a side view of the support device according to the third embodiment of the present application in the expanded state and having a second support length;

[0048] Fig. 18 is a perspective view of a child carrier and a support device according to a fourth embodiment of the present application;

[0049] Fig. 19 is a partial enlarged view of the child carrier and the support device of Fig. 18;

[0050] Fig. 20 is a side view of the child carrier according to the fourth embodiment of the present application in an expanded state;

[0051] Fig. 21 is a side view of the child carrier in a folded state according to the fourth embodiment of the present application;

[0052] Fig. 22 is a perspective view of the support device in an unfolded state according to the fourth embodiment of the present application;

[0053] Fig. 23 is a perspective view of the support device in a folded state according to the fourth embodiment of the present application;

[0054] Fig. 24 is a perspective view of the first and second pivot sockets according to the fourth embodiment of the present application;

[0055] Fig. 25 is a perspective view of the mounting seat, the second locking member and the second elastic member according to the fourth embodiment of the present application;

[0056] Fig. 26 is a sectional view of the pivot joint taken along the central axis of the first support rod with the support device in an unfolded state according to the fourth embodiment of the present application;

[0057] Fig. 27 is a sectional view of the pivot joint taken along the central axis of the first support rod with the support device in a folded state according to the fourth embodiment of the present application;

[0058] Fig. 28 is a sectional view of the pivot joint with the support device in an unfolded state according to the fourth embodiment of the present application;

[0059] Fig. 29 is a sectional view of the pivot joint with the support device in a folded state according to the fourth embodiment of the present application;

[0060] Fig. 30 is a perspective view of the first pivot socket, the third locking member and the third elastic member of the support device according to the fifth embodiment of the present application;

[0061] Fig. 31 is a perspective view of the second pivot socket of the support device according to the fifth embodiment of the present application;

[0062] Fig. 32 is a sectional view of the pivot joint taken along the central axis of the first support rod with the support device in an unfolded state according to the fifth embodiment of the present application;

[0063] Fig. 33 is a sectional view of the pivot joint taken along the central axis of the first support rod with the support device in a folded state according to the fifth embodiment of the present application;

[0064] Fig. 34 is an exploded perspective view of the child carrier according to the sixth embodiment of the present application;

[0065] Fig. 35 is a perspective view of the support device according to the sixth embodiment of the present application;

[0066] Fig. 36 is a perspective view of the first pivot socket, the third locking member and the engaging member according to the sixth embodiment of the present application;

[0067] Fig. 37 is a perspective view of the second pivot socket, the second locking member and the mounting seat according to the sixth embodiment of the present application;

[0068] Fig. 38 is a sectional view of the pivot joint taken along the central axis of the second support rod when the support device according to the sixth embodiment of the present application is in the unfolded state;

[0069] Fig. 39 is a sectional view of the pivot joint when the support device according to the sixth embodiment of the present application is in the unfolded state and the engaging member is in the engaged position;

[0070] Fig. 40 is a sectional view of the pivot joint when the support device according to the sixth embodiment of the present application is in the unfolded state and the engaging member is in the disengaged position;

[0071] Fig. 41 is a perspective view of a support device according to a seventh embodiment of the present application;

[0072] Fig. 42 is a side view of a child carrier according to an eighth embodiment of the present application;

[0073] Fig. 43 is a sectional view of the child carrier shown in Fig. 42;

[0074] Fig. 44 is an exploded perspective view of the carrying device, the support device, the misuse prevention mechanism and the second clamping mechanism in the child carrier shown in Fig. 42;

[0075] Fig. 45 is another exploded perspective view of the carrying device, the support device, the misuse prevention mechanism and the second clamping mechanism in the child carrier shown in Fig. 42;

[0076] Fig. 46 is a side view of the support device and the misuse prevention mechanism in the child carrier shown in Fig. 42;

[0077] Fig. 47 is a side view of the carrying device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism in the child carrier shown in Fig. 42, with the carrying device facing in a first direction relative to the support device;

[0078] Fig. 48 is a sectional view of the carrying device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism shown in Fig. 47;

[0079] Fig. 49 is a perspective view of the carrying device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism in the child carrier shown in Fig. 42, with the carrying device facing in a second direction relative to the support device;

[0080] Fig. 50 is a sectional view of the carrying device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism shown in Fig. 49;

[0081] Fig. 51 is an exploded perspective view of the bearing device, the support device, the misuse prevention mechanism and the second clamping mechanism in the child carrier of the ninth embodiment of the present application;

[0082] Fig. 52 is a perspective view of the support device, the misuse prevention mechanism and the second clamping mechanism shown in Fig. 51;

[0083] Fig. 53 is a combined side view of the bearing device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism shown in Fig. 51, at this time the bearing device is oriented toward the first direction relative to the support device;

[0084] Fig. 54 is another combined side view of the bearing device, the support device, the misuse prevention mechanism, the first clamping mechanism and the second clamping mechanism shown in Fig. 51, at this time the bearing device is oriented toward the second direction relative to the support device. DETAILED DESCRIPTION

[0085] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application within the scope of the appended claims.

[0086] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0087] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0088] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", and "fixedly" mean to be connected, whether directly or indirectly, with or without intervening materials, to be secured or to be detachably secured, to be connected so as to be rigid with or without relative movement, to be connected so as to be non-pivotal, to be connected so as to be non-rotational, or to be connected so as to be pivotal or rotational, as the context dictates.

[0089] In the present application, unless specifically defined otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal level than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal level than the second feature.

[0090] It is to be noted that when an element is referred to as being "on" or "fixed on" another element, it can be directly on the other element or an intervening element can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intervening element can also be present. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0091] Referring to FIGS. 1, 2, 18 and 34, the present application provides a support device 10 and a child carrier 1 comprising the support device 10. The support device 10 is used to mount a carrying device 90 on the child carrier 1 and to support the carrying device 90. The child carrier 1 can be a stroller, a safety seat, a baby bed, a playard, etc. The carrying device 90 can be a baby basket, a baby seat, a diaper table, etc. The present application takes the child carrier 1 as a stroller and the carrying device 90 as a baby basket as an example to specifically describe the support device 10. However, it should be understood that the present application is not limited thereto, for example, in other embodiments, the support device 10 can be used to mount a diaper table on a baby bed.

[0092] It should be noted that, unless otherwise explicitly specified and limited, the orientation terms "front", "back", "left", "right", "up", "down" in the embodiments correspond to the "front", "back", "left", "right", "up", "down" directions of the child carrier 1 when the child carrier 1 is in the unfolded state, the advancing direction of the child carrier 1 is substantially the same as the "front" direction of the child carrier 1, and the "front", "back", "left", "right", "up", "down" directions are schematically shown by arrows F, B, L, R, U, D respectively in the drawings. These orientation terms are only used to make the description of the embodiments of the present application clearer, and should not be used to improperly limit the protection scope of the present application.

[0093] Different embodiments of the support device 10 and the child carrier 1 will be described below.

[0094] First embodiment

[0095] FIGS. 1 to 9 show a first embodiment of the present application.

[0096] Referring to FIGS. 1 to 4, the child carrier 1 comprises a support device 10 and a carrier frame body 80. The carrier frame body 80 comprises a front leg 810, a rear leg 820 and a push handle 830. The front leg 810, the rear leg 820 and the push handle 830 each have a substantially U-shaped shape. The bottom end of the push handle 830 and the top end of the front leg 810 are pivotally connected. The rear leg 820 is pivotally connected to the push handle 830. When the carrier frame body 80 is in the unfolded state, the front leg 810, the rear leg 820 and the ground form a substantially triangular shape, and the push handle 830 is substantially 180 degrees from the rear leg 820.

[0097] The support device 10 is detachably arranged on the carrier frame body 80. Specifically, referring to FIG. 2, the carrier frame body 80 is provided with a clamping seat 840, and the support device 10 is provided with a mounting seat 330, the mounting seat 330 and the clamping seat 840 are detachably clamped, so that the support device 10 and the carrier frame body 80 are detachably connected. More specifically, two clamping seats 840 are respectively arranged on opposite sides of the push handle 830, and two mounting seats 330 are correspondingly arranged on the support device 10, and the support device 10 is detachably arranged between the opposite sides of the push handle 830. The support device 10 can also be provided with a clamping piece 1042, and the bearing device 90 and the clamping piece 1042 are detachably clamped, so that the bearing device 90 is detachably mounted on the support device 10, and then is detachably mounted on the child carrier 1. It should be understood that in other embodiments, the support device 10 can also be permanently arranged on the child carrier 1, which is not limited in the present application.

[0098] Referring to FIGS. 5 and 6, the support device 10 includes a first frame 100, a second frame 200, and pivot joints 300. The first frame 100 and the second frame 200 are pivotably connected by the pivot joints 300, and the support device 10 can be switched between the unfolded state and the folded state by relative pivoting of the first frame 100 and the second frame 200. Specifically, the first frame 100 and the second frame 200 can each be a substantially U-shaped frame. The first frame 100 can include two first support rods 110 arranged opposite and parallel to each other and a first connecting rod 120 connecting the two first support rods 110. The second frame 200 can include two second support rods 210 arranged opposite and parallel to each other and a second connecting rod 220 connecting the two second support rods 210. The end of each first support rod 110 away from the first connecting rod 120 can be pivotably connected to the end of a corresponding second support rod 210 away from the second connecting rod 220 by a pivot joint 300. In the unfolded state, the first frame 100 and the second frame 200 together form a substantially rectangular support frame for supporting the child carrier 90, at which time the first frame 100 and the second frame 200 can form a first included angle. In the folded state, the first frame 100 and the second frame 200 are folded together to reduce the occupied space of the support device 10, at which time the first frame 100 and the second frame 200 can form a second included angle. The first included angle can be greater than the second included angle. Specifically, the first included angle can be greater than 90 degrees and less than or equal to 180 degrees, for example, 120 degrees, 135 degrees, 150 degrees, 180 degrees, etc. The second included angle can be greater than or equal to 0 degrees and less than 90 degrees, for example, 30 degrees, 15 degrees, 0 degrees, etc.

[0099] Referring to FIGS. 3 and 4, when it is necessary to switch the child carrier 1 from the unfolded state to the folded state, the user first pushes the first frame 100 to pivot the first frame 100 in the first pivoting direction X toward the second frame 200 until the first frame 100 and the second frame 200 are folded together to complete the folding of the support device 10. Then, the user can pivot the push handle frame 830 toward the rear leg frame 820 while bringing the front leg frame 810 and the rear leg frame 820 closer to each other, during which the support device 10 in the folded state as a whole also pivots with the push handle frame 830 toward the rear leg frame 820, thereby completing the overall folding of the child carrier 1. The folding mechanism of the present application is simple and easy to operate, and the folded support device 10 and child carrier 1 have a relatively small overall volume and are easy to store.

[0100] Referring to FIGS. 7-9, the pivot joint 300 includes a first pivot seat 310 and a second pivot seat 320. The first pivot seat 310 is arranged at an end of the first support rod 110 away from the first connecting rod 120. The second pivot seat 320 is arranged at an end of the second support rod 210 away from the second connecting rod 220. The second pivot seat 320 is fixedly connected with or integrally arranged with the mounting seat 330. The first pivot seat 310 is pivotally connected with the second pivot seat 320, so that the first frame 100 and the second frame 200 are pivotally connected. The first pivot seat 310 and the second pivot seat 320 can rotate around the rotation axis Z (see FIG. 2) of the pivot joint 300. In this document, the extension direction of the rotation axis Z of the pivot joint 300 is defined as the axial direction of the pivot joint 300, the direction around the rotation axis Z is defined as the circumferential direction of the pivot joint 300, and the direction orthogonal to the rotation axis Z is defined as the radial direction of the pivot joint 300. When the support device 10 switches from the unfolded state to the folded state, the first pivot seat 310 and the second pivot seat 320 pivot relative to each other towards each other (it should be understood that at this time, only one of the first pivot seat 310 and the second pivot seat 320 can pivot relative to the carrier frame 80, or both can pivot relative to the carrier frame 80), in particular, the first pivot seat 310 pivots relative to the second pivot seat 320 in a first pivot direction X, and the second pivot seat 320 pivots relative to the first pivot seat 310 in a second pivot direction (which is opposite to the first pivot direction), in this document, the relative pivot direction of the first pivot seat 310 and the second pivot seat 320 (or the first frame 100 and the second frame 200) when the support device 10 switches from the unfolded state to the folded state is referred to as the folding direction of the support device 10. Similarly, when the support device 10 switches from the folded state to the unfolded state, the first pivot seat 310 and the second pivot seat 320 pivot relative to each other away from each other, in particular, the first pivot seat 310 pivots relative to the second pivot seat 320 in the second pivot direction, and the second pivot seat 320 pivots relative to the first pivot seat 310 in the first pivot direction X, in this document, the relative pivot direction of the first pivot seat 310 and the second pivot seat 320 (or the first frame 100 and the second frame 200) when the support device 10 switches from the folded state to the unfolded state is referred to as the unfolding direction of the support device 10.

[0101] A limiting mechanism limiting the folding angle (or unfolding angle) of the support device 10 is arranged between the first pivot seat 310 and the second pivot seat 320. It should be understood that the folding angle of the support device 10 herein refers to the relative pivoting angle of the first frame body 100 (or the first pivot seat 310) and the second frame body 200 (or the second pivot seat 320) when the support device 10 switches from the fully unfolded state to the fully folded state. Specifically, the side of the second pivot seat 320 facing the first pivot seat 310 is provided with a first limiting groove 361. The side of the first pivot seat 310 facing the second pivot seat 320 is provided with a first abutting portion 362. The first abutting portion 362 extends into the first limiting groove 361 and is movable along the first limiting groove 361. When the support device 10 switches between the unfolded state and the folded state, the first limiting groove 361 can limit the movement range of the first abutting portion 362, thereby limiting the relative pivoting angle of the first pivot seat 310 and the second pivot seat 320. The first abutting portion 362 and the first limiting groove 361 together constitute the limiting mechanism limiting the folding angle (or unfolding angle) of the support device 10.

[0102] More specifically, the first limiting groove 361 has a first limiting end face 3611 and a second limiting end face 3612 arranged at intervals in the circumferential direction of the pivoting joint 300. When the support device 10 is in the unfolded state, the first limiting end face 3611 abuts against the first abutting portion 362, and prevents the first abutting portion 362 from moving in the second pivoting direction (i.e., the unfolding direction of the first frame body 100) opposite to the first pivoting direction X (i.e., the folding direction of the first frame body 100), thereby limiting the relative pivoting of the first frame body 100 and the second frame body 200 in the unfolding direction of the support device 10. When the support device 10 is in the folded state, the second limiting end face 3612 abuts against the first abutting portion 362, and prevents the first abutting portion 362 from moving in the first pivoting direction X (i.e., the folding direction of the first frame body 100), thereby limiting the relative pivoting of the first frame body 100 and the second frame body 200 in the folding direction of the support device 10.

[0103] Further, the second pivot seat 320 is provided with a second limiting groove 364 on the side facing the first pivot seat 310. The first pivot seat 310 is provided with a second abutting portion 365 on the side facing the second pivot seat 320. The second abutting portion 365 extends into the second limiting groove 364 and is movable along the second limiting groove 364. The cooperation between the second abutting portion 365 and the second limiting groove 364 is similar to that between the first abutting portion 362 and the first limiting groove 361. Specifically, the second limiting groove 364 has a third limiting end face 3641 and a fourth limiting end face 3642 which are arranged at intervals in the circumferential direction of the pivot joint 300. When the support device 10 is in the unfolded state, the third limiting end face 3641 abuts against the second abutting portion 365, and the second abutting portion 365 is prevented from moving in the second pivot direction (i.e., the unfolding direction of the first frame 100) opposite to the first pivot direction X (i.e., the folding direction of the first frame 100), thereby limiting the relative pivoting of the first frame 100 and the second frame 200 in the unfolding direction of the support device 10. When the support device 10 is in the folded state, the fourth limiting end face 3642 abuts against the second abutting portion 365, and the second abutting portion 365 is prevented from moving in the first pivot direction X (i.e., the folding direction of the first frame 100), thereby limiting the relative pivoting of the first frame 100 and the second frame 200 in the folding direction of the support device 10.

[0104] In the embodiment shown in FIGS. 7-9, the first pivot seat 310 is provided with a first ring portion 312 extending along the circumferential direction of the pivot joint 300. The first abutting portion 362 and the second abutting portion 365 are arranged between the inner circumferential wall of the first pivot seat 310 and the outer circumferential wall of the first ring portion 312. The first abutting portion 362 and the second abutting portion 365 are arranged opposite to each other in the radial direction of the pivot joint 300 and extend along the radial direction of the pivot joint 300. The second pivot seat 320 is provided with a second ring portion 322 extending along the circumferential direction of the pivot joint 300. The first limiting portion 363 and the second limiting portion 366 are arranged between the inner circumferential wall of the second pivot seat 320 and the outer circumferential wall of the second ring portion 322. The first limiting portion 363 and the second limiting portion 366 are arranged opposite to each other in the radial direction of the pivot joint 300 and extend along the radial direction of the pivot joint 300. The first limiting portion 363, the second limiting portion 366, the inner circumferential wall of the second pivot seat 320 and the outer circumferential wall of the second ring portion 322 jointly define a first limiting groove 361 and a second limiting groove 364. The first limiting portion 363 forms a first limiting end face 3611 and a fourth limiting end face 3642 on two opposite sides in the circumferential direction of the pivot joint 300, respectively. The second limiting portion 366 forms a second limiting end face 3612 and a third limiting end face 3641 on two opposite sides in the circumferential direction of the pivot joint 300, respectively. In this embodiment, by arranging two sets of abutting portions and limiting grooves, the limiting mechanism limits the support device 10 more stably. It should be understood that in other embodiments, only one set of abutting portions and limiting grooves can be arranged, or more than two sets (for example, three sets, four sets, etc.) of abutting portions and limiting grooves can be arranged, which is not limited in the present application.

[0105] The first pivot seat 310 and the second pivot seat 320 are further provided with a first locking mechanism for locking the support device 10 in the unfolded state or the folded state. Specifically, the side of the second pivot seat 320 facing the first pivot seat 310 is provided with an engaging portion 371. The engaging portion 371 is staggered (i.e., not overlapped) with the limiting portion 363 in the radial direction of the pivot joint 300, so as not to interfere with each other. The side of the first pivot seat 310 facing the second pivot seat 320 is provided with a first pushing portion 372 and a second pushing portion 373. The first pushing portion 372 and the second pushing portion 373 are staggered with the abutting portion 362 in the radial direction of the pivot joint 300, so as not to interfere with each other. The first pushing portion 372 and the second pushing portion 373 can be arranged on the end wall of the first ring portion 312 facing the second pivot seat 320. When the support device 10 is in the unfolded state, the engaging portion 371 is engaged with the first pushing portion 372, and the movement of the first pushing portion 372 in the first pivoting direction X is limited, thereby locking the support device 10 in the unfolded state. When the support device 10 is in the folded state, the engaging portion 371 is engaged with the second pushing portion 373, and the movement of the second pushing portion 373 in the second pivoting direction is limited, thereby locking the support device 10 in the folded state.

[0106] The engaging portion 371, the first pushing portion 372, and the second pushing portion 373 can each be an arc-shaped protrusion extending along the circumference of the pivot joint 300, and each has a first side and a second side located in front of the first side in the first pivot direction X. When the support device 10 is in the unfolded state, the engaging portion 371 is located at the second side of the first pushing portion 372, and the first side of the engaging portion 371 abuts against the second side of the first pushing portion 372, thereby preventing the first pushing portion 372 and the first pivot seat 310 from moving in the first pivot direction X, while the first limiting end face 3611 abuts against the first abutting portion 362 (i.e., the first limiting portion 363 abuts against the first abutting portion 362), and the third limiting end face 3641 abuts against the second abutting portion 365 (i.e., the second limiting portion 366 abuts against the second abutting portion 365), thereby preventing the first abutting portion 362, the second abutting portion 365, and the first pivot seat 310 from moving in the second pivot direction, so that the first pivot seat 310 cannot be pivoted relative to the second pivot seat 320, thereby locking the support device 10 in the unfolded state. When it is necessary to fold the support device 10, the user applies an external force to the first frame 100 so that the first frame 100 is pivoted in the first pivot direction X, under the action of the external force, the first pushing portion 372 and the second pushing portion 373 can in turn pass over the top end of the engaging portion 371 to reach the second side of the engaging portion 371. When the support device 10 is in the folded state, the second side of the engaging portion 371 abuts against the first side of the second pushing portion 373, while the second limiting end face 3612 abuts against the first abutting portion 362 (i.e., the second limiting portion 366 abuts against the first abutting portion 362), and the fourth limiting end face 3642 abuts against the second abutting portion 365 (i.e., the first limiting portion 363 abuts against the second abutting portion 365), under the action of these abutments, the first pivot seat 310 cannot be pivoted relative to the second pivot seat 320, thereby locking the support device 10 in the folded state.

[0107] In the first embodiment, the first pushing portion 372, the second pushing portion 373, and the engaging portion 371 collectively constitute the first locking mechanism of the support device 10. It should be understood that in other embodiments, the positions of the first abutting portion 362 and the first limiting groove 361 on the first pivot seat 310 and the second pivot seat 320 can be interchanged, the positions of the second abutting portion 365 and the second limiting groove 364 on the first pivot seat 310 and the second pivot seat 320 can be interchanged, and / or the positions of the first pushing portion 372 and the second pushing portion 373 and the engaging portion 371 on the first pivot seat 310 and the second pivot seat 320 can be interchanged. For example, in the fourth embodiment described below, the engaging portion 371 is provided on the first pivot seat 310, and the first pushing portion 372 and the second pushing portion 373 are provided on the second pivot seat 320.

[0108] Second embodiment

[0109] Figures 10 to 15 show a second embodiment of the present application. The support device 10 and the child carrier 1 of the second embodiment have substantially the same structure as the first embodiment, with the main difference being the first locking mechanism. It should be understood that the technical features of the second embodiment can be combined with the technical features of the first embodiment in any combination without conflict.

[0110] Referring to Figures 12 to 13, in the second embodiment, the first locking mechanism comprises a first locking member 410 disposed between the first pivot seat 310 and the second pivot seat 320. The first locking member 410 is movable along the axial direction of the pivot joint 300 between a first locked position and a first unlocked position. The first locking member 410 is provided with a first locking portion 411 protruding towards the inner peripheral wall of the first pivot seat 310 and the inner peripheral wall of the second pivot seat 320. The side of the first pivot seat 310 facing the second pivot seat 320 is provided with a first locking groove 311. The side of the second pivot seat 320 facing the first pivot seat 310 is provided with a second locking groove 321. The first locking groove 311 and the second locking groove 321 are oppositely disposed in a direction parallel to the axial direction of the pivot joint 300. When the support device 10 is in the unfolded state, the first locking portion 411 is aligned with the first locking groove 311 and the second locking groove 321 in a direction parallel to the axial direction of the pivot joint 300, and at this time, the first locking member 410 is movable between the first locked position and the first unlocked position. When the first locking member 410 is in the first locked position, the first locking portion 411 is simultaneously engaged in the first locking groove 311 and the second locking groove 321, thereby preventing the first pivot seat 310 and the second pivot seat 320 from pivoting relative to each other. When the first locking member 410 is in the first unlocked position, the first locking portion 411 is disengaged from the first locking groove 311, thereby allowing the first pivot seat 310 and the second pivot seat 320 to pivot relative to each other. In the embodiment shown in Figures 12 and 13, the first locking groove 311 is formed on the surface of the first ring portion 312 facing away from the inner peripheral wall of the first pivot seat 310. The second locking groove 321 is formed on the surface of the second ring portion 322 facing away from the inner peripheral wall of the second pivot seat 320.

[0111] Further, the bottom wall of the first pivot seat 310 facing the second pivot seat 320 is formed with a first protruding column 317 protruding towards the second pivot seat 320. The bottom wall of the second pivot seat 320 facing the first pivot seat 310 is formed with a second protruding column 327 protruding towards the first pivot seat 310. The second protruding column 327 is provided with a connecting hole 3271, and the first protruding column 317 extends into the connecting hole 3271 of the second protruding column 327 and is rotatable relative to the second protruding column 327. A pivot shaft (not shown) can pass through the first protruding column 317 and the second protruding column 327 to pivot the first pivot seat 310 and the second pivot seat 320. The first locking member 410 has a first through hole 412 through which the first locking member 410 can be sleeved outside the second protruding column 327 and can move along the outer peripheral surface of the second protruding column 327 between the first locking position and the first unlocking position. It should be understood that the arrangement of the first locking member 410 is not limited thereto, as long as the first locking member 410 is movable between the first locking position and the first unlocking position.

[0112] The first locking mechanism 40 further comprises a driving member 420 and an operating member 430. The driving member 420 is arranged between the first pivot seat 310 and the first locking member 410 and is drivingly connected with the first locking member 410. The operating member 430 is arranged on the first frame body 100 and is operatively connected with the driving member 420. The operating member 430 can move the driving member 420 when operated, thereby driving the first locking member 410 to move from the first locking position to the first unlocking position.

[0113] Specifically, the driving member 420 is movably arranged between the first pivot seat 310 and the first locking member 410 between a first driving position and a second driving position. When the driving member 420 is in the first driving position, the first locking member 410 is in the first locking position. When the driving member 420 moves from the first driving position to the second driving position, the first locking member 410 is driven to move from the first locking position to the first unlocking position. More specifically, the side of the first pivot seat 310 facing the second pivot seat 320 is provided with a sliding groove 318 extending in the radial direction of the pivot joint 300. The first protruding column 317 protrudes from the bottom wall of the sliding groove 318 facing the second pivot seat 320 towards the second pivot seat 320. The driving member 420 is provided with a second through hole 421 through which the driving member 420 is sleeved outside the first protruding column 317, while the driving member 420 is slidably arranged in the sliding groove 318. The shape of the second through hole 421 can allow the driving member 420 to slide along the extension direction of the sliding groove 318 between the first driving position and the second driving position, for example, the second through hole 421 is an elongated through hole extending in the extension direction of the sliding groove 318.

[0114] The operation member 430 is operatively connected with the driving member 420 by a traction member (e.g. a steel wire, not shown). One end of the traction member is connected with the operation member 430, and the other end is connected with the driving member 420. When the operation member 430 is operated, the driving member 420 is pulled by the traction member to slide along the sliding groove 318 from the first driving position to the second driving position. The operation member 430 can be arranged on the first connecting rod 120, and the traction member can extend along the extension direction of the first connecting rod 120 and the first supporting rod 110 in the cavity of the first connecting rod 120 and the first supporting rod 110. A third through hole 303 can be arranged on the peripheral wall of the first pivot seat 310, and the traction member can pass through the third through hole 303 to be connected with the driving member 420. The driving member 420 can be provided with a fourth through hole 424 near one end thereof, and when the traction member is a steel wire, the steel wire can be wound on the side wall of the fourth through hole 424 to be fixedly connected with the driving member 420. In the embodiment as shown in the figure, the sliding direction of the driving member 420 and the extension direction of the sliding groove 318 are the same as the extension direction of the first supporting rod 110, so that the driving member 420 can be conveniently pulled to slide along the sliding groove 318 by the operation member 430 and the traction member.

[0115] The bottom wall of the sliding groove 318 has a first inclined surface 3181, and the side of the driving member 420 facing the sliding groove 318 has a second inclined surface 422 matching and contacting the first inclined surface 3181. When the operation member 430 is operated to pull the driving member 420 to slide along the sliding groove 318 from the first driving position to the second driving position, the driving member 420 is driven to move along the axial direction of the pivot joint 300 towards the second pivot seat 320 by the inclined surface matching relationship between the driving member 420 and the sliding groove 318, so as to push the first locking member 410 to move along the axial direction of the pivot joint 300 away from the first pivot seat 310 to disengage from the first locking groove 311, thereby allowing the first pivot seat 310 and the second pivot seat 320 to pivot relative to each other. In the embodiment as shown in the figure, the first inclined surface 3181 and the second inclined surface 422 gradually incline towards the direction of the second pivot seat 320 along the extension direction of the sliding groove 318. It should be understood that in other embodiments, the bottom wall of the sliding groove 318 can also be flat, the first inclined surface can be arranged on the side of the driving member 420 facing the first locking member 410, and the second inclined surface can be arranged on the side of the first locking member 410 facing the driving member 420. When the driving member 420 slides along the sliding groove 318 from the first driving position to the second driving position, the driving member 420 is also driven to move towards the second pivot seat 320 by the inclined surface matching relationship between the driving member 420 and the first locking member 410, so as to push the first locking member 410 to disengage from the first locking groove 311.

[0116] The first locking mechanism 40 can further include a first elastic member 440 disposed between the first locking member 410 and the second pivot seat 320 and biasing the first locking member 420 towards the first pivot seat 310. Specifically, the first elastic member 440 is a spring sleeved outside the second protruding column 327, one end of which abuts against the bottom wall of the second pivot seat 320, and the other end of which abuts against the surface of the first locking member 410 facing the second pivot seat 320 and biasing the first locking member 420 towards the first pivot seat 310.

[0117] The first locking member 410 can be provided with a plurality of first locking portions 411, and correspondingly, the first pivot seat 310 can be provided with a plurality of first locking grooves 311 and the second pivot seat 320 can be provided with a plurality of second locking grooves 321. When the support device 10 is in the unfolded state, the plurality of first locking portions 411 are aligned with the corresponding plurality of first locking grooves 311 and the plurality of second locking grooves 321 in a direction parallel to the axial direction of the pivot joint 300, at this time, the first locking member 410 can move between the first locking position and the first unlocking position. When the first locking member 410 is located at the first locking position, the plurality of first locking portions 411 are simultaneously clamped in the plurality of first locking grooves 311 and the plurality of second locking grooves 321. When the first locking member 410 is located at the first unlocking position, the plurality of first locking portions 411 are disengaged from the plurality of first locking grooves 311. The plurality of first locking portions 411, the plurality of first locking grooves 311 and the plurality of second locking grooves 321 can make the locking of the pivot joint 300 more stable and reliable. The plurality of first locking portions 411, the plurality of first locking grooves 311 and the plurality of second locking grooves 321 can be respectively arranged at intervals along the circumferential direction of the pivot joint 300.

[0118] In some embodiments, at least one first locking portion 411' of the plurality of first locking portions 411 has a shape different from the other first locking portions 411, the first locking slot 311' corresponding to the first locking portion 411' has a shape different from the other first locking slots 311, and the second locking slot 321' corresponding to the first locking portion 411' has a shape different from the other second locking slots 321. In these embodiments, the first locking slot 311' and the second locking slot 321' corresponding to the first locking portion 411' refer to the first locking slot 311' and the second locking slot 321' aligned with the first locking portion 411' in a direction parallel to the axial direction of the pivot joint 300 when the support device 10 is in the unfolded state. When the user needs to switch the support device 10 from the unfolded state to the folded state, the user first operates the operating member 430 to move the first locking member 410 from the first locking position to the first unlocking position, at which time the plurality of first locking portions 411 disengage from the plurality of first locking portions 411. The user then pushes the first frame 100 towards the second frame 200 to cause the first locking portion 411' to be misaligned with the corresponding first locking slot 311' in the direction parallel to the axial direction of the pivot joint 300, at which time, since the shape of the first locking portion 411' does not match the other first locking slots 311, even if the first locking portion 411' is aligned with the other first locking slots 311 in the direction parallel to the axial direction of the pivot joint 300, the first locking portion 411' cannot be engaged into the other first locking slots 311, so that the first locking member 410 will not return to the first locking position, and therefore, the user can release the operating member 224 without locking the relative pivoting of the first frame 100 and the second frame 200.

[0119] Further, neither the first locking portion 411' nor any of the other first locking portions 411 is rotationally symmetric about the folding angle of the support device 10, neither the first locking slot 311' nor any of the other first locking slots 311 is rotationally symmetric about the folding angle of the support device 10, and neither the second locking slot 321' nor any of the other second locking slots 321 is rotationally symmetric about the folding angle of the support device 10. In this way, when the support device 10 is switched from the unfolded state to the folded state, even if the first locking portion 411' is aligned with the other first locking slots 311 in the direction parallel to the axial direction of the pivot joint 300, the first locking portion 411' cannot be engaged into the other first locking slots 311, so that the first locking member 410 will not return to the first locking position. At this time, without external force, the support device 10 will remain in the folded state due to the frictional force between the first locking member 410 and the driving member 420.

[0120] Third embodiment

[0121] Figs. 16 and 17 show a third embodiment of the present application. The structure of the support device 10 and the child carrier 1 of the third embodiment is substantially the same as that of the second embodiment, and the main differences will be described below. It should be understood that the technical features of the third embodiment can be combined with those of the first embodiment or the second embodiment arbitrarily without conflict.

[0122] In the third embodiment, the support device 10 has multiple use states, and in different use states, the support length or the support angle of the support device 10 is different to meet the support of the carrying device 90 of different sizes, so as to be used diversely. Figs. 16 and 17 respectively show a first use state and a second use state of the support device 10. In the first use state, the support angle of the support device 10 is a1 and the support length is L1; in the second use state, the support angle of the support device 10 is a2 and the support length is L2.

[0123] Specifically, the first locking member 410 is provided with multiple first locking portions 411, and correspondingly, the first pivot seat 310 is provided with multiple first locking grooves 311 and the second pivot seat 320 can be provided with multiple second locking grooves 321. Different from the second embodiment, any two adjacent first locking portions 411 in the multiple first locking portions 411 are rotationally symmetrical about an angle β, any two adjacent first locking grooves 311 in the multiple first locking grooves 311 are rotationally symmetrical about the angle β, and any two adjacent second locking grooves 321 in the multiple second locking grooves 321 are rotationally symmetrical about the angle β. The angle β is the difference between the support angle a1 of the first use state and the support angle a2 of the second use state.

[0124] When the support device 10 is in the first use state, the plurality of first locking portions 411 are aligned with the plurality of first locking slots 311 and the plurality of second locking slots 321 in a direction parallel to the axial direction of the pivot joint 300, at which time the first locking member 410 is movable between the first locking position and the first unlocking position to lock or unlock the support device 10 in the first use state. When the user needs to switch the support device 10 from the first use state to the second use state, the user first operates the operating member 430 to move the first locking member 410 from the first locking position to the first unlocking position, and then the user slightly pushes the first frame 100 towards the second frame 200 so that the plurality of locking portions 411 and the plurality of first locking slots 311 are all misaligned in the direction parallel to the axial direction of the pivot joint 300, and the operating member 224 is released. Then, the user continues to push the first frame 100 towards the second frame 200, and when the first frame 100 rotates an angle β relative to the second frame 200, the plurality of first locking portions 411 again become aligned with the plurality of first locking slots 311 in the direction parallel to the axial direction of the pivot joint 300, at which time the plurality of first locking portions 411 are engaged into the plurality of first locking slots 311 under the bias of the first elastic member 440 (i.e., the first locking member 410 returns to the first locking position), thereby locking the support device 10 in the second use state. It should be understood that the support device 10 can have more than two use states, and the switching process between different use states is similar to the switching process between the first use state and the second use state, which will not be described here.

[0125] Further, any one of the plurality of first locking portions 411 has another first locking portion 411 that is rotationally symmetric about the maximum folding angle of the support device 10 (i.e., the folding angle of the support device 10 when switching from a use state having a maximum support angle or support length to a folding state, which in the illustrated embodiment is a1), and correspondingly, any one of the plurality of first locking slots 311 has another first locking slot 311 that is rotationally symmetric about the maximum folding angle of the support device 10, and any one of the plurality of first locking slots 311 has another second locking slot 321 that is rotationally symmetric about the maximum folding angle of the support device 10. In this way, when the support device 10 is switched to the folding state, the plurality of first locking portions 411 can again become aligned with the plurality of first locking slots 311 in the direction parallel to the axial direction of the pivot joint 300, at which time the plurality of first locking portions 411 are engaged into the plurality of first locking slots 311 under the bias of the first elastic member 440 (i.e., the first locking member 410 returns to the first locking position), thereby locking the support device 10 in the unfolded state.

[0126] Fourth embodiment

[0127] Figs. 18-29 illustrate a fourth embodiment of the present application. The support device 10 and the child carrier 1 of the fourth embodiment have substantially the same structure as the first embodiment, and only the main different features will be described in detail below. It should be understood that the technical features of the fourth embodiment can be combined with the technical features of the first, second and third embodiments in any combination without conflict.

[0128] Referring to Figs. 24, 26 and 27, in the fourth embodiment, the limiting mechanism and the first locking mechanism are substantially the same as the first embodiment, except that the engaging portion 371 is arranged in the first pivot seat 310, and the first pushing portion 372 and the second pushing portion 373 are arranged in the second pivot seat 320. Specifically, the first pushing portion 372 and the second pushing portion 373 are arranged on the end wall of the second ring portion 322 facing the first pivot seat 310. The engaging portion 371 is arranged on the bottom wall of the first pivot seat 310 facing the second pivot seat 320, and is located between the first protruding column 317 and the first ring portion 312.

[0129] When the support device 10 is in the unfolded state, as shown in Fig. 26, the first limiting end face 3611 (the first limiting portion 363) abuts against the first abutting portion 362, and the third limiting end face 3641 (the third limiting portion 366) abuts against the second abutting portion 365, thereby preventing the relative pivoting of the first pivot seat 310 and the second pivot seat 320 in the unfolding direction of the support device 10. Meanwhile, the engaging portion 371 and the first pushing portion 372 abut against each other, thereby preventing the relative pivoting of the first pivot seat 310 and the second pivot seat 320 in the folding direction of the support device 10. As a result, the first pivot seat 310 and the second pivot seat 320 cannot pivot relative to each other, thereby locking the support device 10 in the unfolded state. When the support device 10 is in the folded state, as shown in Fig. 27, the second limiting end face 3612 (the second limiting portion 366) abuts against the first abutting portion 362, and the fourth limiting end face 3642 (the first limiting portion 363) abuts against the second abutting portion 365, thereby preventing the relative pivoting of the first pivot seat 310 and the second pivot seat 320 in the folding direction of the support device 10. Meanwhile, the engaging portion 371 and the second pushing portion 373 abut against each other, thereby preventing the relative pivoting of the first pivot seat 310 and the second pivot seat 320 in the unfolding direction of the support device 10. As a result, the first pivot seat 310 and the second pivot seat 320 cannot pivot relative to each other, thereby locking the support device 10 in the folded state.

[0130] Referring to FIGS. 22, 23 and 25, in the fourth embodiment, the pivot joint 300 further comprises a mounting seat 330 for mounting the support device 10 to the carrier frame 80. The mounting seat 330 is disposed on the side of the second pivot seat 320 distal to the first pivot seat 310 and is pivotally connected to the second pivot seat 320. The support device 10 further comprises a second locking mechanism for locking and / or unlocking the relative pivoting between the second pivot seat 320 and the mounting seat 330. The second locking mechanism comprises a second locking member 510 disposed between the second pivot seat 320 and the mounting seat 330, the second locking member 510 being movable between a second locked position and a second unlocked position, the relative pivoting between the second pivot seat 320 and the mounting seat 330 being blocked when the second locking member 510 is in the second locked position, and the relative pivoting between the second pivot seat 320 and the mounting seat 330 being allowed when the second locking member 510 is in the second unlocked position.

[0131] Specifically, referring to FIGS. 28 and 29, the second locking member 510 is provided with a second locking portion 511 protruding towards the inner peripheral wall of the second pivot seat 320 and the inner peripheral wall of the mounting seat 330. The side of the second pivot seat 320 facing the mounting seat 330 is provided with a third locking groove 323. The side of the mounting seat 330 facing the second pivot seat 320 is provided with a fourth locking groove 334. When the second locking member 510 is in the second locked position, the second locking portion 511 is engaged in the third locking groove 323 and the fourth locking groove 334 at the same time, thereby blocking the relative pivoting between the second pivot seat 320 and the mounting seat 330. When the second locking member 510 is in the second unlocked position, the second locking portion 511 is disengaged from the third locking groove 323, thereby allowing the relative pivoting between the second pivot seat 320 and the mounting seat 330. The number of the second locking portion 511, the third locking groove 323 and the fourth locking groove 334 can be plural. The arrangement of the second locking portion 511, the third locking groove 323 and the fourth locking groove 334 can refer to the arrangement of the first locking portion 411, the first locking groove 311 and the second locking groove 321 in the second embodiment or the third embodiment, which will not be described herein again.

[0132] Further, the first pivot base 310 is connected with the second locking member 510, when the first pivot base 310 pivots relative to the second pivot base 320 to switch the support device 10 from the unfolded state to the folded state, the first pivot base 310 drives the second locking member 510 to move from the second locking position to the second unlocking position, thereby allowing the second pivot base 320 and the mounting base 330 to pivot relative to each other. Specifically, referring to FIGS. 24 and 25, the connecting hole 3271 of the second protruding post 327 is a through hole, and the first protruding post 317 passes through the connecting hole 3271 to drive the second locking member 510 away from the first pivot base 310. More specifically, the first protruding post 317 is provided with a first helical surface 3171 away from the first pivot base 310, and the second locking member 510 is provided with a driving hole 512, the inner wall of the driving hole 512 forms a second helical surface 5121 matched with the first helical surface 3171, the first protruding post 317 away from the first pivot base 310 extends into the driving hole 512 and makes the first helical surface 3171 contact with the second helical surface 5121, when the first pivot base 310 pivots relative to the second pivot base 320 along the first pivot direction X, the second locking member 510 is driven to move towards the mounting base 330 by the cooperation of the first helical surface 3171 and the second helical surface 5121, thereby making the second locking member 510 disengage from the third locking slot 323.

[0133] Further, the second locking member 510 is drivingly connected with the release key 841 (see FIG. 19) of the carrier frame 80, when the second locking member 510 moves from the second locking position to the second unlocking position, the second locking member 510 drives the release key 841 to move, thereby releasing the relative pivot between the front legs 810, the rear legs 820 and the handle frame 830, to allow the overall folding of the carrier frame 80. Specifically, referring to FIGS. 19 and 25, the side of the second locking member 510 facing the mounting base 330 is provided with a release portion 513 protruding towards the mounting base 330, and the mounting base 330 is provided with a release hole 335, when the second locking member 510 moves from the second locking position to the second unlocking position, the release portion 513 pushes the release key 841 through the release hole 335 to release the relative pivot between the front legs 810, the rear legs 820 and the handle frame 830. For example, the front legs 810, the rear legs 820 and the handle frame 830 can be pivotally connected together by another pivot joint (not shown), and the clamping seat 840 can be provided on the side of the other pivot joint away from the carrier frame 80, when the mounting base 330 is clamped on the clamping seat 840, the release hole 335 can be opposite to the release key 841, so that the release portion 513 can contact and push the release key 841 to move after passing through the release hole 335.

[0134] Further, as shown in FIG. 25, the second locking mechanism further comprises a second elastic member 520 arranged between the second pivot seat 320 and the second locking member 510, the second elastic member 520 biases the second locking member 510 towards the mounting seat 330. Specifically, the second elastic member 520 is a spring, one end of which is in abutment with the surface of the second pivot seat 320 facing the mounting seat 330, and the other end of which is in abutment with the surface of the second locking member 510 facing the second pivot seat 320, and biases the second locking member 510 towards the mounting seat 330.

[0135] Please refer to FIG. 20 and FIG. 21, when it is needed to fold the child carrier 1, the user first pushes the first frame 100 towards the second frame 200 to complete the folding of the support device 10, at this time, as shown in FIG. 27, under the abutment of the second limiting end surface 3612 and the first abutment part 362, the abutment of the fourth limiting end surface 3642 and the second abutment part 365, and the abutment of the clamping part 371 and the second pushing part 373, the support device 10 is locked in the folded state, at the same time, the second locking member 510 is driven by the first protruding column 317 of the first pivot seat 310 to move from the second locking position to the second unlocking position, so that the support device 1 is released from the carrier frame 80 and each frame of the carrier frame 80. Then, the user can pivot the push handle frame 830 towards the rear leg frame 820, and at the same time, the front leg frame 810 and the rear leg frame 820 are moved towards each other, during which, the support device 10 can be folded as a whole towards the front leg frame 810, so as to complete the overall folding of the child carrier 1. The folding mechanism of the present embodiment is simple and easy to operate, and the overall volume of the support device 10 and the child carrier 1 after folding is small, and it is easy to store.

[0136] Fifth embodiment

[0137] FIG. 30 to FIG. 33 show the fifth embodiment of the present application. The support device 10 and the child carrier 1 of the fifth embodiment are basically the same as those of the fourth embodiment, and the difference mainly lies in the first locking mechanism. It should be understood that, in the case of no conflict, the technical features of the fifth embodiment can be combined with the technical features of the first embodiment, the second embodiment, the third embodiment or the fourth embodiment in any way.

[0138] Specifically, as shown in FIG. 30, the first locking mechanism includes a third locking member 610 disposed between the first pivot seat 310 and the second pivot seat 320, the third locking member 610 being movable between a third locking position and a third unlocking position along the radial direction of the pivot joint 300. The first pivot seat 310 is provided with a fifth locking slot 315. The second pivot seat 320 is provided with two sixth locking slots 326 which are rotationally symmetrical with respect to the folding angle of the support device 10. When the third locking member 610 is in the third locking position, the third locking member 610 is engaged in the fifth locking slot 315 and one of the sixth locking slots 326 at the same time, thereby preventing the relative pivoting of the first pivot seat 310 and the second pivot seat 320. When the third locking member 610 is in the third unlocking position, the third locking member 610 is disengaged from the sixth locking slots 326, thereby allowing the relative pivoting of the first pivot seat 310 and the second pivot seat 320.

[0139] In the embodiment shown in FIGS. 30-33, the fifth locking slot 315 extends along the radial direction of the pivot joint 300 between the first ring portion 312 and the peripheral wall of the first pivot seat 310, and communicates with the space enclosed by the second ring portion 312. In the embodiment shown, the fifth locking slot 315 is disposed between the first abutment portion 362 and the second abutment portion 365. The third locking member 610 is slidably disposed in the fifth locking slot 315 along the radial direction of the pivot joint 300. The sixth locking slots 326 are disposed on the second ring portion 322. The sixth locking slots 326 extend along the radial direction of the pivot joint 300, and have a slot opening facing the peripheral wall of the second pivot seat 320. The second ring portion 322 is inserted into the first ring portion 312 (i.e., located in the space enclosed by the first ring portion 312). When the support device 10 is in the unfolded state, the fifth locking slot 315 and one of the sixth locking slots 326 are oppositely disposed and communicate in the radial direction of the pivot joint 300, and the third locking member 610 can lock and unlock the relative pivoting of the first pivot seat 310 and the second pivot seat 320 by extending into and out of the sixth locking slot 326. When the support device 10 is switched from the unfolded state to the folded state, the fifth locking slot 315 and the other sixth locking slot 326 are oppositely disposed and communicate in the radial direction of the pivot joint 300, and the third locking member 610 can lock and unlock the relative pivoting of the first pivot seat 310 and the second pivot seat 320 by extending into and out of the sixth locking slot 326.

[0140] As shown in FIGS. 30 and 31, the side of the third locking member 610 facing the second ring portion 322 can be provided with two third inclined surfaces 611 symmetric about the central axis of the fifth locking slot 315. The sixth locking slot 326 can be provided with two fourth inclined surfaces 3261 matching the two third inclined surfaces 611. When the third locking member 610 is in the third locking position, the third inclined surfaces 611 are in contact with the fourth inclined surfaces 3261. When an external force is applied to pivot the first pivot seat 310 relative to the second pivot seat 320, under the cooperation of the third inclined surfaces 611 and the fourth inclined surfaces 3261, the third locking member 610 moves towards the peripheral wall of the first pivot seat 310, thereby disengaging from the sixth locking slot 326 and reaching the third unlocking position.

[0141] Further, as shown in FIG. 30, the fifth locking slot 315 is provided with a limiting recess 3151 on the side wall in the circumferential direction of the pivot joint 300. The third locking member 610 is provided with a limiting protrusion 612 on the side wall in the circumferential direction of the pivot joint 300. The limiting protrusion 612 extends into the limiting recess 3151 and can move in the direction parallel to the radial direction of the pivot joint 300 within the limiting recess 3151. Through the cooperation of the limiting protrusion 612 and the limiting recess 3151, the movement of the third locking member 610 between the third locking position and the third unlocking position can be limited.

[0142] Further, the first locking mechanism further comprises a third elastic member 620 provided between the third locking member 610 and the bottom wall of the fifth locking slot 315 away from the second ring portion 322, the third elastic member 620 biases the third locking member 610 towards the second ring portion 322, so that the third locking member 610 remains in the third locking position when no external force is applied.

[0143] The first protruding column 317 is located in the space surrounded by the first ring portion 312. The second protruding column 327 is located in the space surrounded by the second ring portion 322. When the second ring portion 322 is inserted into the first ring portion 312, the end of the first protruding column 317 away from the first pivot seat 310 passes through the connecting hole 3271 of the second protruding column 327 and is drivingly connected with the second locking member 510. The driving connection between the first protruding column 317 and the second locking member 510 will be described in the fourth embodiment, which will not be described here.

[0144] Sixth Embodiment

[0145] FIGS. 34-40 illustrate a sixth embodiment of the present application. The support device 10 and the child carrier 1 of the sixth embodiment have substantially the same structure as the fifth embodiment, and only the main differences will be described below. It should be understood that, in the absence of conflicts, the technical features of the sixth embodiment can be combined with the technical features of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, or the fifth embodiment in any combination.

[0146] Referring to FIGS. 36 and 37, in the sixth embodiment, the limiting mechanism for limiting the relative pivoting angle of the first pivot seat 310 and the second pivot seat 320 is substantially the same as that in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment when the support device 10 is switched between the unfolded state and the folded state. Specifically, the first abutting portion 362 and the second abutting portion 365 are arranged in the first pivot seat 310, and the first limiting portion 363 and the second limiting portion 366 are arranged in the second pivot seat 320. The first abutting portion 362 and the second abutting portion 365 cooperate with the first limiting portion 363 and the second limiting portion 366 to limit the first frame 100 and the second frame 200 during unfolding and folding. The specific cooperation relationship is described in the first embodiment and will not be repeated here.

[0147] Referring to FIGS. 36 and 38 to 40, the support device 10 further comprises a clamping member 710. The first pivot seat 310 is provided with a clamping hole 316 extending in the axial direction of the pivoting joint 300. The clamping member 710 is inserted into the clamping hole 316 and can slide in the extension direction of the clamping hole 316 between a clamping position and a release position. The clamping member 710 has an abutting end 711 and a clamping end 712 opposite to each other in the extension direction of the clamping hole 316. The clamping end 712 is closer to the second pivot seat 320 than the abutting end 711. When the support device 10 is in the unfolded state and the clamping member 710 is in the clamping position, the clamping end 712 protrudes from the end of the clamping hole 316 close to the second pivot seat 320 and abuts against the side of the first limiting portion 363 away from the first abutting portion 362. At this time, the first limiting portion 363 is clamped between the clamping member 710 and the first abutting portion 362, so that the first pivot seat 310 and the second pivot seat 320 cannot be pivoted relative to each other. In this way, the support device 10 can be more stably maintained in the unfolded state. Even if the child carrier 1 is used on a slope or subjected to impact, the first pivot seat 310 will not be pivoted relative to the second pivot seat 320, causing the third locking member 610 to disengage from the sixth locking groove 326 and release the pivoting joint 300, thereby increasing the locking stability of the support device 10 in the unfolded state. When the clamping member 710 is in the release position, the clamping end 712 retreats into the clamping hole 316, and the abutting end 711 protrudes from the end of the clamping hole 316 away from the second pivot seat 320. At this time, when the carrying device 90 is installed on the support device 10, the side of the carrying device 90 abuts against the abutting end 711 and pushes the clamping member 710 from the release position to the clamping position, thereby enhancing the locking stability of the support device 10 in the unfolded state.

[0148] Further, as shown in FIG. 36, the engaging member 710 and the first pivot base 310 are provided with a fourth elastic member 720, which biases the engaging member 710 away from the second pivot base 320, so that the engaging member 710 remains in the released position when no external force is applied. When the bearing device 90 is removed from the support device 10, the engaging member 710 is moved to and remains in the released position under the action of the fourth elastic member 720, at which time the third pivot joint 300 can be released by pushing the first frame 100 towards the second frame 200, so that the third locking member 610 disengages from the sixth locking slot 326 (see the description of the fifth embodiment for details)

[0149] Further, the engaging member 710 is further provided with a guide portion 713, which protrudes from the side of the side wall of the engaging member 710 facing the engaging hole 316. The side wall of the engaging hole 316 is further provided with a guide slot 3161 extending parallel to the extension direction of the engaging hole 316. The guide slot 3161 has an opening facing the second pivot base 320 and an end wall opposite to the opening. The guide portion 713 is slidably arranged in the guide slot 3161, and when the engaging member 710 is in the released position, the guide portion 713 abuts against the end wall of the guide slot 3161 to prevent the engaging member 710 from disengaging from the engaging hole 316.

[0150] The side of the first pivot base 310 facing the second pivot base 320 is further provided with a cover 730. The cover 730 covers the opening of the guide slot 3161 but exposes the engaging end 712. When the engaging member 710 is in the engaging position, the guide portion 713 abuts against the cover 730, and the engaging end 712 protrudes from the cover 730 to abut against the first limiting portion 363. The end wall of the guide slot 3161 and the cover 730 jointly define the sliding stroke of the engaging member 710 between the engaging position and the released position.

[0151] Further, as shown in FIG. 36 and FIG. 39, the engaging member 710 includes a recess 714 recessed relative to the engaging end 712 in a direction away from the second pivot base 320, the cover 730 covers the recess 714, and the fourth elastic member 720 is arranged between the cover 730 and the recess 714 and biases the engaging member 710 in a direction away from the second pivot base 320. More specifically, the side of the cover 730 facing the recess 714 is provided with a protrusion 731 protruding toward the recess 714, the side of the recess 714 facing the cover 730 is provided with a receiving hole 7141, and the protrusion 731 extends into the receiving hole 7141. The fourth elastic member 720 is a spring, which is sleeved outside the protrusion 731 and located in the receiving hole 7141. One end of the fourth elastic member 720 abuts against the cover 730, the other end abuts against the bottom wall of the receiving hole 7141 facing the cover 730, and biases the engaging member 710 in a direction away from the second pivot base 320. The cover 730 can extend along the circumference of the pivot joint 300 between the first abutment portion 362 and the side wall of the fifth locking groove 315, and has a notch 732 for exposing the engaging end 712.

[0152] It should be understood that, in other embodiments, when the support device 10 is in the unfolded state and the engaging member 710 is in the engaged position, the end of the engaging end 712 extending out of the engaging hole 316 close to the second pivot base 320 can abut against the side of the second limiting portion 366 away from the second abutment portion 365, so that the second limiting portion 366 is clamped between the engaging member 710 and the second abutment portion 365, so that the first pivot base 310 and the second pivot base 320 cannot be pivoted relative to each other. In still other embodiments, the second pivot base 320 can be provided with a third limiting portion different from the first limiting portion 363 and the second limiting portion 366, for example, the third limiting portion is also arranged between the inner circumferential wall of the second pivot base 320 and the outer circumferential wall of the second ring portion 322, when the support device 10 is in the unfolded state and the engaging member 710 is in the engaged position, the engaging end 712 extending out of the engaging hole 316 abuts against the third limiting portion, thereby preventing the first pivot base 310 from being pivoted in the first pivoting direction X, while the first limiting portion 363 and the second limiting portion 366 abut against the first abutment portion 362 and the second abutment portion 365 respectively and prevent the first pivot base 310 from being pivoted in the second pivoting direction, so that the first pivot base 310 and the second pivot base 320 cannot be pivoted relative to each other.

[0153] Seventh Embodiment

[0154] FIG. 41 shows a seventh embodiment of the present application. The support device 10 and the child carrier 1 of the seventh embodiment have substantially the same structure as the sixth embodiment, and only the main differences will be described below. It should be understood that, in the case of no conflict, the technical features of the seventh embodiment can be combined with the technical features of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, or the sixth embodiment in any combination.

[0155] In the seventh embodiment, the mounting base 330 is fixedly connected or integrally provided with the second pivot base 320. Therefore, the second pivot base 320 cannot pivot relative to the mounting base 330, so that the support device 10 as a whole cannot pivot relative to the child carrier 1 as a whole in the unfolded state, even if the child carrier 1 is used on a slope or is subjected to an impact, further enhancing the safety of use of the support device 10.

[0156] Similarly to the first embodiment, when the child carrier 1 as a whole is folded, the support device 10 as a whole in the folded state is also folded along with the push handle frame 830 to complete the overall folding of the child carrier 1.

[0157] The first limiting mechanism and the first locking mechanism between the first pivot base 310 and the second pivot base 320 and the clamping mechanism (including the clamping member 710) associated with the bearing device 90 in the present embodiment are substantially the same as those in the sixth embodiment, and will not be described again here.

[0158] Eighth Embodiment

[0159] FIGS. 42 and 43 illustrate an eighth embodiment of the present application. The support device 10 and the child carrier 1 of the eighth embodiment have substantially the same structure as those of the first embodiment, and the main differences will be described below. It should be understood that, in the absence of conflicts, various technical features of the eighth embodiment can be combined with various technical features of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, or the seventh embodiment in any manner.

[0160] In the eighth embodiment, as shown in FIGS. 42 and 43, the child carrier 1 can further include a misuse prevention mechanism 102, which can prevent safety hazards caused by incorrect installation direction of the bearing device 90. The misuse prevention mechanism 102 is arranged between the bearing device 90 and the support device 10. When the bearing device 90 is directed toward the first direction D1 relative to the support device 10, the misuse prevention mechanism 102 allows the bearing device 90 to be installed on the support device 10; when the bearing device 90 is directed toward the second direction D2 relative to the support device 10, the misuse prevention mechanism 102 prevents the bearing device 90 from being installed on the support device 10.

[0161] Specifically, the misuse prevention mechanism 102 can have various implementation styles. For example, the misuse prevention mechanism 102 can be a protruding structure 102’ arranged on the support device 10. When the bearing device 90 is directed toward the first direction D1 relative to the support device 10, the protruding structure 102’ and the bearing device 90 avoid each other to allow the bearing device 90 to be installed on the support device 10; when the bearing device 90 is directed toward the second direction D2 relative to the support device 10, the protruding structure 102’ abuts at least part of the bearing device 90 to prevent the bearing device 90 from being installed on the support device 10.

[0162] Of course, in other embodiments, the misuse prevention mechanism 102 can also be a protruding structure 102' provided on the carrier device 90. When the carrier device 90 is moved towards the first direction D1 relative to the support device 10, the protruding structure 102' is clear of the support device 10 to allow the carrier device 90 to be mounted on the support device 10. When the carrier device 90 is moved towards the second direction D2 relative to the support device 10, the protruding structure 102' abuts against at least part of the support device 10 to prevent the carrier device 90 from being mounted on the support device 10.

[0163] In other embodiments not shown, the misuse prevention mechanism 102 can also include a first sensor (not shown) provided on the support device 10 and a second sensor (not shown) provided on the carrier device 90. When the carrier device 90 is moved towards the first direction D1 relative to the support device 10, the first sensor and the second sensor are misaligned and not triggered, and the carrier device 90 is allowed to be mounted on the support device 10. When the carrier device 90 is moved towards the second direction D2 relative to the support device 10, the first sensor and the second sensor are aligned and triggered, and an alarm is issued to prevent the carrier device 90 from being mounted on the support device 10. The first sensor and the second sensor can be, for example, laser sensors or infrared sensors. The alarm can be an audible and visual alarm or a telecommunication alarm sent to a mobile terminal (e.g. a mobile phone, an iPad, etc.) of a user.

[0164] More specifically, as shown in FIGS. 44-46, the protruding structure 102' can include a first protrusion 1021. The carrier device 90 can be provided with a clearance 901 and a first abutment 902 (see FIG. 48). The clearance 901 is located in the first direction D1 of the first abutment 902. When the carrier device 90 is moved towards the first direction D1 relative to the support device 10, as shown in FIGS. 47 and 48, the first protrusion 1021 is inserted into the clearance 901 to allow the carrier device 90 to be mounted on the support device 10. When the carrier device 90 is moved towards the second direction D2 relative to the support device 10, as shown in FIGS. 49 and 50, the first protrusion 1021 abuts against the first abutment 902 to prevent the carrier device 90 from being mounted on the support device 10. Optionally, the clearance 901 can be a clearance groove, and the second abutment 903 can be an abutment protrusion.

[0165] In the embodiment, as shown in FIGS. 44 and 45, the carrying device 90 can be a baby basket, for example. The carrying device 90 can include a carrying body 910 forming a carrying space 911 for carrying a baby. The carrying body 910 can be roughly divided into a backrest portion 912 for supporting the back of the baby and a legrest portion 913 for supporting the legs of the baby. The backrest portion 912 and the legrest portion 913 are arranged at an angle to each other, for example, 80 to 110 degrees, and specifically, 80 degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees or 110 degrees, etc. During use, the backrest portion 912 is higher than the legrest portion 913 in the horizontal direction, so that the baby sitting in the carrying device 90 forms a safe and comfortable sitting mode with the head higher than the legs. As shown in FIGS. 47 and 48, a first clamping mechanism 103 is arranged below the backrest portion 912, and the first clamping mechanism 103 is used to clamp the support device 10 to achieve detachable connection of the carrying device 90 and the support device 10. Specifically, the first clamping mechanism 103 is used to achieve detachable connection of the backrest portion 912 of the carrying device 90 and the support device 10. The first clamping mechanism 103 includes a fixed seat 1031 connected to the bottom of the backrest portion 912 and a first clamping hook 1032 movably arranged on the fixed seat 1031. The fixed seat 1031 can be provided with an exposure port 1031a, and the first clamping hook 1032 can extend out of the fixed seat 1031 through the exposure port 1031a to clamp the support device 10. Specifically, the first clamping hook 1032 can extend out of the fixed seat 1031 through the exposure port 1031a to clamp the first frame body 100, and more specifically, the first clamping hook 1032 can extend out of the fixed seat 1031 through the exposure port 1031a to clamp the first connecting rod 120. In the embodiment, the fixed seat 1031 forms the first abutting portion 902. In this way, the first abutting portion 902 does not need to be additionally arranged on the carrying device 90, reducing the processing procedure and saving the production manufacturing cost. In other embodiments, a protruding portion can be arranged on the bottom of the backrest portion 912 as the first abutting portion 902.

[0166] Specifically, as shown in FIG. 45, a second clamping mechanism 104 is further arranged between the bearing device 90 and the support device 10, and is used to achieve detachable connection between the bearing device 90 and the support device 10. Specifically, the second clamping mechanism 104 is used to achieve detachable connection between the leg rest 913 of the bearing device 90 and the support device 10. The second clamping mechanism 104 comprises a clamping rod 1041 arranged on the leg rest 913 and a clamping piece 1042 arranged on the support device 10. More specifically, a recessed portion 914 is arranged below the leg rest 913, and the two ends of the clamping rod 1041 are respectively connected to the two opposite groove walls of the recessed portion 914. The support device 10 further comprises a supporting seat 101 connected to the first frame body 100 or the second frame body 200. In the present embodiment, the supporting seat 101 is connected to the second frame body 200 and is located on the inner side of the second frame body 200, i.e., the side of the second frame body 200 facing the first frame body 100. The supporting seat 101 is provided with the clamping piece 1042. In the present embodiment, the clamping piece 1042 is two and is arranged on the supporting seat 101 in a spaced manner. The clamping piece 1042 can be in the form of a clamping hook. Specifically, the supporting seat 101 has a hollow inner cavity (not shown in the drawings), and the supporting seat 101 is provided with a communication port 1012 (see FIG. 44) capable of communicating with the hollow inner cavity. The clamping piece 1042 is movably arranged in the hollow inner cavity of the supporting seat 101, and the clamping piece 1042 can selectively extend out of the communication port 1012 to be clamped with the clamping rod 1041 or retract into the hollow inner cavity through the communication port 1012 to be unclamped with the clamping rod 1041. When the bearing device 90 is installed on the support device 10, the supporting seat 101 is used to support at least part of the bottom of the support device 10, so as to improve the installation stability of the bearing device 90. In the present embodiment, the first protrusion 1021 is arranged on the supporting seat 101 and vertically extends upward. The first protrusion 1021 can be specifically located between the two clamping pieces 1042. The recessed portion 914 below the leg rest 913 can form the above-mentioned avoiding recess (i.e., the avoiding portion 901). In this way, the avoiding recess does not need to be additionally arranged on the bearing device 90. In other embodiments, a groove portion can also be arranged on the bottom of the leg rest 913 as the avoiding recess.

[0167] In the present embodiment, the first direction D1 and the second direction D2 are opposite. When the bearing device 90 is facing the first direction D1 relative to the support device 10, i.e. the face of the baby sitting in the bearing device 90 is facing the first direction D1, as shown in FIGS. 47 and 48, the backrest 912 of the bearing device 90 is substantially opposite to the first frame 100 of the support device 10, and the legrest 913 of the bearing device 90 is substantially opposite to the second frame 200 and the cradle 101 of the support device 10. When the bearing device 90 is facing the second direction D2 relative to the support device 10, i.e. the face of the baby sitting in the bearing device 90 is facing the second direction D2, as shown in FIGS. 49 and 50, the backrest 912 of the bearing device 90 is substantially opposite to the second frame 200 and the cradle 101 of the support device 10, and the legrest 913 of the bearing device 90 is substantially opposite to the first frame 100 of the support device 10. The direction in which the carrier frame 80 (i.e. the child carrier 1) travels is the front direction, and the opposite direction of the direction in which the carrier frame 80 (i.e. the child carrier 1) travels is the rear direction. When the support device 10 is installed on the carrier frame 80, the first frame 100 is located in front of the second frame 200, the first direction D1 is substantially the same as the opposite direction of the direction in which the carrier frame 80 (i.e. the child carrier 1) travels, i.e. substantially the same as the rear direction, and the second direction D2 is substantially the same as the direction in which the carrier frame 80 (i.e. the child carrier 1) travels, i.e. substantially the same as the front direction. Thus, when the bearing device 90 is installed on the support device 10 and facing the first direction D1 relative to the support device 10, the backrest 912 of the bearing device 90 is located in front of the legrest 913, i.e. the head of the baby sitting in the bearing device 90 is facing the user standing behind the stroller, which is convenient for the user to safely watch over the baby, thus the safety factor of the baby in the bearing device 90 can be improved, and the safety hidden danger can be reduced.

[0168] When the bearing device 90 is mounted on the support device 10 relative to the support device 10 in the first direction D1, as shown in FIGS. 44 and 45, the backrest 912 of the bearing device 90 is substantially opposite the first frame 100 of the support device 10, the legrest 913 of the bearing device 90 is substantially opposite the second frame 200 and the support seat 101 of the support device 10, and then the bearing device 90 is close to the support device 10 downward. The first clamping hook 1032 of the bearing device 90 extends out of the fixing seat 1031 through the exposure opening 1031a to clamp the first connecting rod 120 of the first frame 100, while the two clamping pieces 1042 on the support seat 101 clamp the clamping rod 1041 arranged on the legrest 913, and the support seat 101 is supported below at least part of the legrest 913. As shown in FIGS. 47 and 48, the first protrusion 1021 arranged on the support seat 101 is inserted into the avoiding portion 901 (i.e., the recess portion 914) of the legrest 913, thereby allowing the bearing device 90 to be stably mounted on the support device 10. When the bearing device 90 is mounted on the support device 10 relative to the support device 10 in the second direction D2, as shown in FIGS. 49 and 50, the backrest 912 of the bearing device 90 is substantially opposite the second frame 200 and the support seat 101 of the support device 10, the legrest 913 of the bearing device 90 is substantially opposite the first frame 100 of the support device 10, and then the bearing device 90 is close to the support device 10 downward. The first protrusion 1021 arranged on the support seat 101 will abut against the first abutting portion 902 arranged on the backrest 912, thereby preventing the bearing device 90 from being mounted on the support device 10, and avoiding the safety hazard caused by the incorrect mounting direction of the bearing device 90.

[0169] Ninth Embodiment

[0170] FIGS. 51 and 52 show a ninth embodiment of the present application. The support device 10 and the child carrier 1 of the ninth embodiment have substantially the same structure as those of the eighth embodiment, and only differ in the structure of the misuse prevention mechanism 102. The main differences will be described below. It should be understood that, in the case of no conflict, each technical feature of the ninth embodiment can be combined with each technical feature of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment, or the eighth embodiment.

[0171] In the ninth embodiment, as shown in FIGS. 51 and 52, the anti-misuse mechanism 102 is also disposed between the bearing device 90 and the support device 10, similar to the eighth embodiment. When the bearing device 90 is moved toward the first direction D1 relative to the support device 10, the anti-misuse mechanism 102 allows the bearing device 90 to be mounted on the support device 10; when the bearing device 90 is moved toward the second direction D2 relative to the support device 10, the anti-misuse mechanism 102 prevents the bearing device 90 from being mounted on the support device 10. Specifically, the anti-misuse mechanism 102 can also be a protruding structure 102' disposed on the support device 10. When the bearing device 90 is moved toward the first direction D1 relative to the support device 10, as shown in FIG. 53, the protruding structure 102' and the bearing device 90 are mutually avoided to allow the bearing device 90 to be mounted on the support device 10; when the bearing device 90 is moved toward the second direction D2 relative to the support device 10, as shown in FIG. 54, the protruding structure 102' and at least part of the bearing device 90 are in abutment to prevent the bearing device 90 from being mounted on the support device 10.

[0172] Unlike the eighth embodiment, in this embodiment, as shown in FIGS. 53 and 54, the protruding structure 102' further comprises a second protrusion 1022, and the bearing device 90 is provided with a second abutting portion 903. When the bearing device 90 is moved toward the first direction D1 relative to the support device 10, as shown in FIG. 53, the second protrusion 1022 and the second abutting portion 903 are mutually staggered in the first direction D1 to allow the bearing device 90 to be mounted on the support device 10; when the bearing device 90 is moved toward the second direction D2 relative to the support device 10, as shown in FIG. 54, the second protrusion 1022 and the second abutting portion 903 are in abutment in the first direction D1 to prevent the bearing device 90 from being mounted on the support device 10.

[0173] As shown in FIGS. 51 and 52, the carrying device 90 further comprises a handle 920 and pivot seats 930. The handle 920 is rotatably mounted to the carrying body 910 via the pivot seats 930. The handle 920 can be rotated relative to the carrying body 910 between a vertical position (as shown in FIG. 51) and a horizontal position (not shown in the drawings), for example. When the handle 920 is in the vertical position, the user can pull the carrying device 90 by the handle 920 to move the carrying device 90; when the handle 920 is in the horizontal position, the handle 920 can be stored in a position close to the backrest 912, for example, to facilitate the placement or removal of the baby. Specifically, the handle 920 is generally in the form of a U-shaped rod structure. The pivot seats 930 can be two and are arranged on the left and right sides of the carrying body 910, respectively. Each pivot seat 930 is arranged at the junction of the corresponding side wall of the backrest 912 and the corresponding side wall of the leg rest 913. The two ends of the handle 920 are respectively pivotally connected to the opposite sides of the carrying device 90 via two pivot joints 300. Specifically, the two ends of the handle 920 are respectively pivotally connected to the left and right sides of the carrying device 90 via two pivot joints 300. In this embodiment, the two pivot seats 930 form two second abutting portions 903, respectively. Such an arrangement can eliminate the need to additionally provide the second abutting portions 903 on the carrying device 90, but directly use the structural features of the carrying device 90 itself to interfere with or abut the second protrusions 1022 of the support device 10 to prevent safety hazards caused by incorrect installation direction of the carrying device 90.

[0174] Further, as mentioned above, the pivot joint 300 has two, and the two ends of the first frame 100 are respectively pivotally connected to the two ends of the second frame 200 through the two pivot joints 300. The two pivot joints 300 are respectively provided with the second protrusions 1022, and the two pivot joints 300 form the two second abutting portions 903. Specifically, the two second protrusions 1022 are respectively arranged on the second pivot seats 320 of the two pivot joints 300. The second protrusions 1022 vertically protrude upward from the upper surfaces of the second pivot seats 320. In the embodiment, the second protrusions 1022 and the second pivot seats 320 are integrally formed. In other embodiments, the second protrusions 1022 and the second pivot seats 320 can also be independent components connected by riveting or the like. Of course, the two second protrusions 1022 can also be respectively arranged on the first pivot seats 310 or the mounting seats 330 of the two pivot joints 300, as long as they can be staggered or abutted with the pivot seats 930 of the bearing device 90. When the bearing device 90 is relative to the support device 10 in the first direction D1, as shown in FIG. 53, the two second protrusions 1022 and the two second abutting portions 903 are respectively staggered in the first direction D1 to allow the bearing device 90 to be mounted on the support device 10. When the bearing device 90 is relative to the support device 10 in the second direction D2, as shown in FIG. 54, the two second protrusions 1022 and the two second abutting portions 903 are respectively abutted in the first direction D1 to prevent the bearing device 90 from being mounted on the support device 10.

[0175] Specifically, as shown in FIGS. 53 and 54, in the first direction D1 (or the second direction D2), the maximum distance from the edge of the first frame body 100 to the second protrusion 1022 is a first distance S1; in the first direction D1 (or the second direction D2), the maximum distance from the edge of the second frame body 200 to the second protrusion 1022 is a second distance S2; the first distance S1 is greater than the second distance S2, or the second distance S2 is greater than the first distance S1. Specifically, the first distance S1 is the distance from the first connecting rod 120 of the first frame body 100 to the second protrusion 1022 in the first direction D1 (or the second direction D2); the second distance S2 is the distance from the second connecting rod 220 of the second frame body 200 to the second protrusion 1022 in the first direction D1 (or the second direction D2). That is, the second protrusion 1022 is in the offset position of the support device 10 in the front-back direction. In this way, when the bearing device 90 is installed relative to the support device 10 towards the first direction D1, as shown in FIG. 53, the second protrusions 1022 on the left and right sides of the support device 10 are respectively staggered with the second abutting portions 903 located on the left and right sides of the bearing body 910 to allow the bearing device 90 to be installed on the support device 10. Specifically, the two second protrusions 1022 are respectively located in the first direction D1 of the second abutting portion 903 on the corresponding side. When the bearing device 90 is installed relative to the support device 10 towards the second direction D2, as shown in FIG. 54, the second protrusions 1022 on the left and right sides of the support device 10 are respectively abutted with the second abutting portions 903 located on the left and right sides of the bearing body 910 to prevent the bearing device 90 from being installed on the support device 10. Specifically, the two second protrusions 1022 are respectively located below and abutted with the second abutting portion 903 on the corresponding side.

[0176] When the bearing device 90 is installed on the support device 10 relative to the support device 10 in the first direction D1, as shown in FIG. 53, the backrest 912 of the bearing device 90 is substantially opposite the first frame 100 of the support device 10, the legrest 913 of the bearing device 90 is substantially opposite the second frame 200 and the support seat 101 of the support device 10, and then the bearing device 90 is close to the support device 10 downward. The first clamping hook 1032 of the bearing device 90 extends out of the fixing seat 1031 through the exposure opening 1031a to clamp the first connecting rod 120 of the first frame 100, while the two clamping pieces 1042 on the support seat 101 clamp the clamping rod 1041 arranged on the legrest 913, and the support seat 101 is supported below at least part of the legrest 913. At this time, as shown in FIG. 53, the two second protrusions 1022 arranged on the left and right sides of the support device 10 are staggered with the two pivot seats 930 arranged on the left and right sides of the bearing body 910, thereby allowing the bearing device 90 to be stably installed on the support device 10. When the bearing device 90 is relative to the support device 10 in the second direction D2, as shown in FIG. 54, the backrest 912 of the bearing device 90 is substantially opposite the second frame 200 and the support seat 101 of the support device 10, the legrest 913 of the bearing device 90 is substantially opposite the first frame 100 of the support device 10, and then the bearing device 90 is close to the support device 10 downward. The two second protrusions 1022 arranged on the left and right sides of the support device 10 will abut against the two pivot seats 930 arranged on the left and right sides of the bearing body 910, thereby preventing the bearing device 90 from being installed on the support device 10, avoiding the safety hazard caused by the incorrect installation direction of the bearing device 90.

[0177] The child carrier 1 and the support device 10 provided by the present application have simple folding operation, and the overall size of the folded support device 10 and child carrier 1 is small, which is easy to store.

[0178] Any combination of the technical features of each of the embodiments can be made. In order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0179] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A support device comprising: a first frame; a second frame; a pivot joint comprising a first pivot seat provided on the first frame and a second pivot seat provided on the second frame, the first pivot seat and the second pivot seat being pivoted such that the first frame and the second frame are pivotably connected to allow the support device to be switchable between an unfolded state and a folded state; and a first locking mechanism provided between the first pivot seat and the second pivot seat and capable of locking or unlocking the relative pivoting between the first frame and the second frame. 2.The support device according to claim 1, wherein one of the first pivot seat and the second pivot seat is provided with a limiting portion, the other of the first pivot seat and the second pivot seat is provided with an abutting portion, and the abutting portion cooperates with the limiting portion such that the support device is kept in the unfolded state or the folded state. 3.The support device according to claim 2, wherein the first locking mechanism comprises: an engaging portion provided on one of the first pivot seat and the second pivot seat, and a first pushing portion and a second pushing portion provided on the other of the first pivot seat and the second pivot seat and distributed along the circumference of the pivot joint; when the support device is in the unfolded state, the engaging portion is engaged with the first pushing portion, thereby limiting the relative pivoting of the first pivot seat and the second pivot seat in the folding direction of the support device; when the support device is in the folded state, the engaging portion is engaged with the second pushing portion, thereby limiting the relative pivoting of the first pivot seat and the second pivot seat in the unfolding direction of the support device. 4.The support device according to claim 3, wherein the engaging portion, the first pushing portion and the second pushing portion are staggered with the limiting portion and the abutting portion in the radial direction of the pivot joint. 5.The support device according to claim 3, wherein the engaging portion, the first pushing portion and the second pushing portion are each an arc-shaped protrusion extending along the circumference of the pivot joint. 6.The support device according to claim 1, wherein the first locking mechanism comprises: a first locking member provided between the first pivot seat and the second pivot seat and capable of moving along the axial direction of the pivot joint between a first locking position and a first unlocking position, a first locking groove provided on the side of the first pivot seat facing the second pivot seat, and a second locking groove provided on the side of the second pivot seat facing the first pivot seat; the first locking member has a first locking portion protruding towards the peripheral wall of the first pivot seat and the second pivot seat; when the first locking member is located at the first locking position, the first locking portion is engaged in the first locking groove and the second locking groove at the same time; when the first locking member is located at the first unlocking position, the first locking portion is disengaged from one of the first locking groove and the second locking groove. 7.The support device according to claim 6, wherein ​ The first locking mechanism further comprises: a driving member arranged between the first locking member and the first pivot base and in driving connection with the first locking member, and an operating member arranged on the first frame body and in operating connection with the driving member; The operating member drives the first locking member to move towards the second pivot base when operated by the driving member, so that the first locking member is disengaged from the first locking groove.

8. The support device according to claim 7, wherein a sliding groove extending along the radial direction of the pivot joint is arranged on the side of the first pivot base facing the second pivot base, the driving member is slidably arranged in the sliding groove, the side of the sliding groove facing the driving member is provided with a first inclined surface, the side of the driving member facing the sliding groove is provided with a second inclined surface matching and in contact with the first inclined surface, and the operating member drives the first locking member to move towards the second pivot base while pulling the driving member to slide along the sliding groove when operated.

9. The support device according to claim 6, wherein a first elastic member is arranged between the first locking member and the second pivot base, and the first elastic member biases the first locking member towards the first pivot base.

10. The support device according to claim 1, wherein the pivot joint further comprises a mounting base arranged on the side of the second pivot base away from the first pivot base and pivotally connected with the second pivot base; the support device further comprises a second locking mechanism, the second locking mechanism comprises a second locking member arranged between the second pivot base and the mounting base, the second locking member is movable between a second locking position and a second unlocking position, when the second locking member is in the second locking position, the second locking member prevents the relative pivoting between the second pivot base and the mounting base, and when the second locking member is in the second unlocking position, the second locking member allows the relative pivoting between the second pivot base and the mounting base; the first pivot base is in driving connection with the second locking member, and when the support device is switched from the unfolded state to the folded state, the first pivot base drives the second locking member to move from the second locking position to the second unlocking position.

11. The support device according to claim 10, wherein a first protruding column is arranged on the side of the first pivot base facing the second pivot base, the first protruding column is provided with a first helical surface on the end thereof away from the first pivot base, the second pivot base is provided with a connecting hole, the second locking member is provided with a driving hole, the inner wall of the driving hole is provided with a second helical surface matching the first helical surface, the end of the first protruding column away from the first pivot base is inserted into the driving hole through the connecting hole, and the first helical surface is in contact with the second helical surface to drive the first pivot base and the second locking member.

12. The support device according to claim 10, wherein The mounting base is provided with a release hole, and the second locking member is provided with a release portion protruding towards the mounting base on the side facing the mounting base, The mounting base is used for clamping on a clamping seat of a child carrier, and when the mounting base is clamped on the clamping seat, the mounting base is arranged opposite a folding release locking member of a carrier frame body of the child carrier; When the second locking member moves from the second locking position to the second unlocking position, the release portion pushes the folding release locking member through the release hole to allow the carrier frame body to be folded.

13. The support device according to claim 1, wherein The first locking mechanism comprises a third locking member arranged between the first pivot seat and the second pivot seat, and the third locking member is movable along the radial direction of the pivot joint between a third locking position and a third unlocking position; The first pivot seat is provided with a fifth locking groove, and the second pivot seat is provided with two sixth locking grooves which are rotationally symmetrical about the folding angle of the support device; When the third locking member is in the third locking position, the third locking member is clamped in the fifth locking groove and one of the two sixth locking grooves at the same time, thereby preventing the relative pivoting of the first pivot seat and the second pivot seat; when the third locking member is in the third unlocking position, the third locking member is disengaged from the sixth locking groove, thereby allowing the relative pivoting of the first pivot seat and the second pivot seat.

14. The support device according to claim 1, wherein The second pivot seat is provided with a limiting portion; The first pivot seat is provided with a clamping member which is movable between a clamping position and a release position relative to the first pivot seat, and has a pushing end and a clamping end which are oppositely arranged in the moving direction thereof; When the clamping member is in the clamping position, the clamping end abuts against the limiting portion to limit the relative pivoting of the first pivot seat and the second pivot seat; When the clamping member is in the release position, the clamping end is disengaged from the limiting portion, and the pushing end is exposed outside the first pivot seat.

15. The support device according to claim 1, wherein The second pivot seat is provided with a limiting portion, and the first pivot seat is provided with a clamping hole extending in the axial direction of the pivot joint, and the support device further comprises a clamping member inserted in the clamping hole and capable of sliding in the clamping hole between a clamping position and a release position in the extending direction of the clamping hole, and the clamping member has a pushing end and a clamping end which are oppositely arranged in the extending direction of the clamping hole, and the clamping end is closer to the second pivot seat than the pushing end, and when the support device is in the unfolded state and the clamping member is in the clamping position, the clamping end protrudes from the end of the clamping hole close to the second pivot seat and abuts against the limiting portion, so that the support device is kept in the unfolded state, and when the clamping member is in the release position, the clamping end is withdrawn into the clamping hole, and the pushing end protrudes from the end of the clamping hole away from the second pivot seat.

16. A child carrier, comprising: A carrier frame; A carrier device for carrying a child; A support device for mounting and supporting the carrier device on the carrier frame; and A misuse prevention mechanism disposed between the carrier device and the support device, the misuse prevention mechanism allowing the carrier device to be mounted on the support device when the carrier device is oriented in a first direction relative to the support device, and the misuse prevention mechanism preventing the carrier device from being mounted on the support device when the carrier device is oriented in a second direction relative to the support device.

17. The child carrier of claim 16, wherein the misuse prevention mechanism is a protruding structure disposed on the support device, the protruding structure and the carrier device being mutually clear to allow the carrier device to be mounted on the support device when the carrier device is oriented in the first direction relative to the support device, and the protruding structure and at least part of the carrier device being in abutment to prevent the carrier device from being mounted on the support device when the carrier device is oriented in the second direction relative to the support device.

18. The child carrier of claim 17, wherein the protruding structure comprises a first protrusion, the carrier device having a clear portion and a first abutment portion, the clear portion being located in front of the first abutment portion in the first direction, the first protrusion being inserted into the clear portion to allow the carrier device to be mounted on the support device when the carrier device is oriented in the first direction relative to the support device, and the first protrusion being in abutment with the first abutment portion to prevent the carrier device from being mounted on the support device when the carrier device is oriented in the second direction relative to the support device.

19. The child carrier of claim 18, wherein the clear portion is a clear groove, and the first abutment portion is an abutment protrusion.

20. The child carrier of claim 17, wherein the protruding structure further comprises a second protrusion, the carrier device having a second abutment portion, the second protrusion and the second abutment portion being mutually offset in the first direction to allow the carrier device to be mounted on the support device when the carrier device is oriented in the first direction relative to the support device, and the second protrusion and the second abutment portion being in abutment in the first direction to prevent the carrier device from being mounted on the support device when the carrier device is oriented in the second direction relative to the support device.

21. The child carrier of claim 20, wherein the support device comprises a first frame, a second frame, and a pivot joint, the first frame and the second frame being pivotably connected by the pivot joint, the second protrusion being disposed on the pivot joint, and the carrier device comprises a carrier body, a handle, and a pivot seat, the handle being rotatably mounted on the carrier body by the pivot seat, the pivot seat forming the second abutment portion.

22. The child carrier of claim 21, wherein ​ ​ In the first direction, the maximum distance from the edge of the first frame to the second protrusion is a first distance; in the first direction, the maximum distance from the edge of the second frame to the second protrusion is a second distance; the first distance is greater than the second distance, or the second distance is greater than the first distance.

23. The child carrier of claim 21, wherein, The pivot seats are two, the two ends of the handle are respectively pivoted to the opposite sides of the bearing device through the two pivot seats, the pivot joints are two, the two ends of the first frame are respectively pivoted to the two ends of the second frame through the two pivot joints, the two pivot joints are respectively provided with the second protrusions, the two pivot joints respectively form the two second abutting portions, when the bearing device faces the first direction relative to the support device, the two second protrusions and the two second abutting portions are respectively staggered in the first direction to allow the bearing device to be installed on the support device, when the bearing device faces the second direction relative to the support device, the two second protrusions and the two second abutting portions are respectively abutted in the first direction to prevent the bearing device from being installed on the support device.

24. A child carrier comprising the support device according to any one of claims 1 to 15.

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