Child carrier

Abstract

The invention relates to a child carrier. The child carrier comprises a frame, a seat assembly, a backrest assembly, a handlebar and a linkage mechanism. The seat assembly is mounted to the frame and is configured to be movable relative to the frame in a longitudinal direction of the frame. The backrest assembly is pivoted with the seat assembly. The handlebar is pivoted to the frame. The linkage mechanism is arranged on one side of the seat assembly and connected with the backrest assembly and the seat assembly. When the handlebar pivots relative to the frame, the handlebar drives the seat assembly to move relative to the frame in the longitudinal direction of the frame, and the seat assembly drives the backrest assembly to synchronously move along with the seat assembly in the longitudinal direction of the frame through the linkage mechanism, so that the angle of the backrest assembly relative to the seat assembly is kept unchanged.

Description

Technical Field

[0001] The present invention relates to a children's carrier. Background Art

[0002] In order to meet different usage requirements, there are child carriers such as child strollers with a reversing function. Such child carriers can be switched between a forward mode and a rearward mode. In the forward mode, the child placed in the child carrier faces the front of the child carrier, while in the rearward mode, the child placed in the child carrier faces the rear of the child carrier. The reversing function of the child carrier can be achieved by directly adjusting the direction of the rider's handle (also called a push handle) so as not to affect the child placed in the child carrier.

[0003] For child carriers that realize the reversing function by the rotation of the rider, there are child carriers whose seats move relative to the frame as the rider rotates. Such child carriers may have a backrest with an adjustable tilt angle, for example, the tilt angle of the backrest is adjusted by adjusting the length of the backrest strap. A common structure for adjusting the tilt angle of the backrest is that the bottom of the backrest is rotatably connected to the seat, and the middle and upper parts of the backrest are movably connected to the frame through backrest straps fixed to the frame at both ends. However, since the seat will move relative to the frame during the rider's forward and backward reversal process, the bottom of the backrest will move with the movement of the frame, and the tilt angle of the backrest will be forced to change. This change in the tilt angle of the backrest is not desired and will affect the user experience. Summary of the invention

[0004] A first aspect of the present invention provides a child carrier. The child carrier includes a frame, a seat assembly, a backrest assembly, a rider and a linkage mechanism. The seat assembly is mounted on the frame and is configured to be movable relative to the frame in the longitudinal direction of the frame. The backrest assembly includes a pivot connection with the seat assembly. The rider is pivotally connected to the frame. The linkage mechanism is disposed on one side of the seat assembly and is respectively connected to the backrest assembly and the seat assembly. When the rider pivots relative to the frame, the rider drives the seat assembly to move relative to the frame in the longitudinal direction of the frame, and the seat assembly drives the backrest assembly to move synchronously with the seat assembly in the longitudinal direction of the frame through the linkage mechanism, so that the angle of the backrest assembly relative to the seat assembly remains unchanged.

[0005] In the first aspect, the backrest assembly includes a backrest tube and a backrest belt, the backrest tube is supported on the backrest belt, and the linkage mechanism includes a linkage rod, a first end of the linkage rod is connected to the seat assembly, and a second end of the linkage rod is connected to the armrest of the frame and connected to the end of the backrest belt.

[0006] In the first aspect, the linkage mechanism further comprises a fixing plate, which is connected to the second end of the linkage rod via a sliding pin so that the fixing plate moves together with the second end of the linkage rod. The end of the back strap is connected to the fixing plate.

[0007] The second aspect of the present invention provides a child carrier. The child carrier includes a frame, a seat assembly and a locking mechanism. The frame includes a front leg, a rear leg, an armrest and a support member. The armrest is pivotally connected to the front leg and the rear leg at the same pivot point. The support member includes a first support frame and a second support frame pivotally connected to each other, an end of the first support frame away from the second support frame is pivotally connected to the armrest, and an end of the second support frame away from the first support frame is pivotally connected to the rear leg. The locking mechanism includes a locking member. The locking member is slidably arranged on the first support frame and can be switched between a locking position and a release position. The locking member has a locking end, and a locking hole is arranged on the rear leg. When the locking member is in the locking position, the locking end is suitable for being inserted and matched with the locking hole; when the locking member is in the release position, the locking end is disengaged from the locking hole.

[0008] In the above second aspect, the locking mechanism further comprises a fixing seat, which is arranged on the rear foot, wherein the locking hole is arranged on the fixing seat.

[0009] In the above second aspect, the locking member further comprises a locking end, and the second support frame is provided with an unfolding locking groove. When the frame is in the unfolded state and the locking member is in the locking position, the locking end is adapted to be inserted and matched with the unfolding locking groove to restrict the folding of the frame; when the locking member is in the unlocking position, the frame is allowed to switch between the unfolded state and the folded state.

[0010] In the above second aspect, the locking member further comprises a locking end, the second support frame is provided with a folding locking groove, and the folding locking groove and the unfolding locking groove are respectively provided on both sides of the pivot axis of the first support frame and the second support frame. When the frame is in the folded state and the locking member is in the locked position, the locking end is adapted to be inserted and matched with the folding locking groove to limit the unfolding of the frame.

[0011] In the above second aspect, the locking member is provided with a pushing portion, and the pushing portion is adapted to be pushed by the unlocking mechanism to drive the locking member to move toward the unlocking position.

[0012] In the second aspect, the child carrier further comprises a rider, the rider being pivotally connected to the support member. The release mechanism comprises a driving member and an operating member. The driving member is movably disposed on the rider and is adapted to push the pushing portion to drive the locking member to move toward the release position. The operating member is disposed on the rider and connected to the driving member, and the operating member can be operated to drive the driving member to move.

[0013] In the above second aspect, the child carrier further includes a rider, a backrest assembly and a linkage mechanism. The rider is pivotally connected to the frame. The backrest assembly includes a backrest tube and a backrest belt, the backrest tube is supported on the backrest belt and is pivotally connected to the seat assembly. The linkage mechanism is arranged on one side of the seat assembly and is connected to the end of the backrest belt and the seat assembly respectively. When the rider pivots relative to the frame, the rider drives the seat assembly to move relative to the frame in the longitudinal direction of the frame, and the seat assembly drives the end of the backrest belt to move synchronously with the seat assembly in the longitudinal direction of the frame through the linkage mechanism.

[0014] A third aspect of the present invention provides a child carrier, comprising: a frame; a seat assembly mounted on the frame; a backrest assembly pivotally connected to the seat assembly; a headrest pivotally connected to the backrest assembly; and a driving member connected to the frame and configured to drive the headrest so that the angle of the headrest relative to the backrest assembly changes when the angle of the backrest assembly relative to the seat assembly changes.

[0015] In the third aspect above, the child carrier further includes: a linkage mechanism, which is arranged on one side of the seat assembly and is connected to the backrest assembly and the seat assembly respectively. The seat assembly is constructed to be able to move relative to the frame along the longitudinal direction of the frame. When the rider pivots relative to the frame, the rider drives the seat assembly to move relative to the frame along the longitudinal direction of the frame, and the seat assembly drives the backrest assembly to move synchronously with the seat assembly along the longitudinal direction of the frame through the linkage mechanism, so that the angle of the backrest assembly relative to the seat assembly remains unchanged. The connecting section of the driving member connected to the frame moves synchronously with the seat assembly along the longitudinal direction of the frame.

[0016] In the third aspect, the backrest assembly is configured to be pivotable relative to the seat assembly so that the child carrier can switch between a sitting state and a lying state. When the child carrier is in the sitting state, the backrest assembly is in an upright position, and the headrest board is parallel to the backrest assembly. When the child carrier is in the lying state, the backrest assembly is in a horizontal position, and the headrest board is perpendicular to the backrest assembly.

[0017] In the above third aspect, the backrest assembly includes a backrest tube, and the bottom portion of the headrest panel is pivotally connected to a top section of the backrest tube.

[0018] In the third aspect, the headrest plate is pivotable relative to the backrest assembly within a range of an angle of about 90° to about 180° with respect to the backrest assembly.

[0019] In the third aspect, a headrest elastic member is disposed between the headrest and the backrest assembly, and the headrest elastic member is adapted to bias the headrest so that the headrest remains parallel to the seat assembly.

[0020] In the third aspect, the headrest elastic member is in the form of a double torsion spring, having two spring parts and a U-shaped abutment part, and the two spring parts are respectively located at both ends of the U-shaped abutment part. The two spring parts are wound around the top section of the backrest tube, and the U-shaped abutment part abuts against the headrest and is suitable for applying an elastic restoring force to the headrest to keep the headrest parallel to the seat assembly.

[0021] In the third aspect, the driving member comprises a headrest belt, the top of the headrest board is connected to the vehicle frame via the headrest belt, and the headrest belt has a constant length in a section between the headrest board and the vehicle frame. The headrest belt is adapted to pull the headrest board to pivot relative to the backrest assembly during the process in which the backrest assembly pivots relative to the seat assembly to switch the child carrier from the sitting state to the lying state.

[0022] In the third aspect above, the driving member includes a backrest belt, and the backrest belt is suitable for supporting the backrest tube thereon.

[0023] In the third aspect, the linkage mechanism comprises a linkage rod, a first end of which is connected to the seat assembly, and a second end of which is connected to the armrest of the frame and to the connecting section of the driving member.

[0024] In the third aspect above, the linkage mechanism further includes a fixing plate, which is connected to the second end of the linkage rod via a sliding pin so that the fixing plate moves together with the second end of the linkage rod, and the connecting section of the driving member is connected to the fixing plate.

[0025] In the third aspect, the child carrier further comprises a belt adjusting device, the backrest belt passes through the belt adjusting device and extends to the connecting section, and the belt adjusting device is configured to adjust the length of the backrest belt between the fixing plate and the belt adjusting device.

[0026] The fourth aspect of the present invention provides a child carrier, which includes: a frame; a seat assembly, which is mounted on the frame; a backrest assembly, which is pivotally connected to the seat assembly, and the backrest assembly can be pivoted relative to the seat assembly between an upright position and a horizontal position; a backrest belt, which is suitable for supporting the backrest assembly thereon and is configured to adjust the inclination angle of the backrest assembly, the backrest belt having an effective backrest support length, and the longer the effective backrest support length is, the greater the inclination angle of the backrest assembly is; a belt adjustment device, which is configured to adjust the effective backrest support length of the backrest belt. When the backrest assembly is in the upright position, the effective backrest support length is the shortest, and when the backrest assembly is in the horizontal position, the effective backrest support length is the longest. The belt adjustment device is configured so that when the backrest assembly is in the horizontal position, or in any position deviating from the upright position toward the horizontal position, the belt adjustment device can automatically shorten the effective backrest support length so that the backrest assembly returns to the upright position. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The features and advantages of the present invention will be better understood through the following detailed description of exemplary embodiments utilizing the principles of the present invention with reference to the following drawings:

[0028] Figure 1 A child carrier according to a first embodiment of the present invention is shown, wherein the child carrier is in a forward-facing mode;

[0029] Figure 2 A child carrier according to a first embodiment of the present invention is shown, wherein the child carrier is in a rear-facing mode;

[0030] Figure 3 for Figure 1 A schematic diagram of the structure of the child carrier after removing the front legs and the rear legs;

[0031] Figure 4 is a partial exploded schematic diagram of the child carrier according to the first embodiment of the present invention after the front legs and the rear legs are removed;

[0032] Figure 5 for Figure 4 A partial enlarged view of

[0033] Figure 6 is a partial exploded schematic diagram of the child carrier according to the first embodiment of the present invention from another perspective after the front legs and the rear legs are removed;

[0034] Figure 7 for Figure 6 A partial enlarged view of

[0035] Figure 8A child carrier according to a second embodiment of the present invention is shown, wherein the child carrier is in a forward-facing mode;

[0036] Fig. 9 for Figure 8 A partial side cutaway view of a child carrier in FIG.

[0037] Fig.10 for Fig. 9 A partial enlarged view of

[0038] Fig.11 for Fig.10 A schematic diagram of the cable structure is shown after removing some internal details;

[0039] Fig.12 is a side view of a mounting seat of a child carrier according to a second embodiment of the present invention when it is installed in an armrest;

[0040] Fig.13 It is a structural schematic diagram of a mounting seat of a child carrier and components mounted therein according to a second embodiment of the present invention.

[0041] Fig.14 is an exploded schematic diagram of a mounting seat of a child carrier and components mounted therein according to a second embodiment of the present invention;

[0042] Fig.15 is an exploded schematic diagram of a mounting seat of a child carrier and components mounted therein according to a second embodiment of the present invention from another perspective;

[0043] Fig.16 A child carrier according to a third embodiment of the present invention is shown, wherein the child carrier is in a forward-facing mode;

[0044] Fig.17 for Fig.16 A partial enlarged view of

[0045] Fig.18 A child carrier according to a fourth embodiment of the present invention is shown, wherein the child carrier is in a rear-facing mode;

[0046] Fig.19 for Fig.18 A side view of the child carrier in a folded state;

[0047] Fig. 20 for Fig.18 A side view of a child carrier in FIG.

[0048] Fig.21 for Fig.18 A cross-sectional view of a child carrier in FIG.

[0049] Fig. 22 Show Fig.18Side frames of child carriers and parts mounted thereon;

[0050] Fig.23 for Fig. 22 An exploded schematic diagram of the side frame and the components mounted thereon;

[0051] Fig.24 for Fig.18 A partial view of a cross-sectional view of the child carrier along line U1-U1;

[0052] Fig.25 Show Fig.18 The local structure of the child carrier in the folded state;

[0053] Fig.26 A child carrier according to a fifth embodiment of the present invention is shown, wherein the child carrier is in a sitting state;

[0054] Fig. 27 for Fig.26 A schematic structural diagram of the child carrier from another perspective shown;

[0055] Fig.28 A child carrier according to a fifth embodiment of the present invention is shown, wherein the child carrier is in a lying-flat state;

[0056] Fig.29 for Fig.28 a side view of the child carrier shown;

[0057] Fig.30 for Fig.28 A schematic structural diagram of the child carrier from another perspective shown;

[0058] Fig.31 A strap adjustment device according to a sixth embodiment of the present invention is shown;

[0059] Fig.32 for Fig.31 The illustrated schematic diagram of the belt adjustment device is an exploded view of the components at two different viewing angles;

[0060] Fig.33 for Fig.32 Schematic diagram of the reel shown at two different viewing angles;

[0061] Fig.34 for Fig.32 Schematic diagram of the auxiliary disk shown at two different viewing angles;

[0062] Fig.35 for Fig.31 The schematic diagram of the internal structure of the strap adjustment device shown is at a certain viewing angle;

[0063] Fig.36 for Fig.31 A schematic diagram of the internal structure of the strap adjustment device shown in another perspective;

[0064] Fig.37 yes Fig.31 A schematic diagram showing a locking member of a strap adjustment device in a locked position;

[0065] Fig.38 yes Fig.31 A schematic diagram showing a locking member of a strap adjusting device in a released position. DETAILED DESCRIPTION

[0066] In the following description, various aspects of the present invention will be described. For the purpose of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. It will be clear to those skilled in the art that other embodiments of the present invention may differ in detail without affecting the essence thereof. Therefore, the present invention is not limited to the contents shown in the drawings and described in the specification, but only as indicated in the appended claims, the proper scope of the present invention is determined only by the broadest interpretation of the claims.

[0067] When a feature or element is referred to herein as "on another feature or element," it may be directly on another feature or element, or there may be intermediate features and / or elements. Conversely, when a feature or element is referred to as being "directly" on another feature or element, there are no intermediate features or elements. It should also be understood that when a feature or element is referred to as being "connected," "attached," or "engaged" to another feature or element, it may be directly connected, attached, or engaged to another feature or element, or there may be intermediate features or elements. Conversely, when a feature or element is referred to as being "directly connected," "directly attached," or "directly engaged" to another feature or element, there are no intermediate features or elements.

[0068] Spatially related terms, such as "under", "below", "above", "above", etc., are used in this article for ease of description, particularly for describing the positional relationship between one feature or element and another feature or element as shown in the figure. It should be understood that spatially related terms are intended to include different orientations of the device in use or at work in addition to the orientation shown in the figure. For example, if the device in the figure is inverted, the features or elements described in this article as being "under" other features or elements will be oriented as "above" other features or elements. Therefore, the exemplary term "below" can include both above and below orientations. The device may also be oriented otherwise (rotated 90 degrees or in other directions), and the spatially related descriptions used in this article are interpreted accordingly. Similarly, unless otherwise specifically indicated, the terms "upward", "downward", "vertical", "horizontal", etc. used herein are for illustration only.

[0069] Although the terms "first" and "second" may be used to describe various features or elements in this article, these features or elements should not be limited by these terms unless otherwise specifically stated. These terms can be used to distinguish one feature or element from another feature or element. Therefore, the first feature or element discussed below can be referred to as the second feature or element, and similarly, the second feature or element discussed below can be referred to as the first feature or element. In this article, "plurality" refers to at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In this document, the “longitudinal direction” means the longitudinal direction of the child carrier from the perspective of the child placed in the child carrier, which corresponds to the front-to-back direction of the child carrier. The “lateral direction” means the lateral direction of the child carrier from the perspective of the child placed in the child carrier, which corresponds to the left-right direction of the child carrier. The “forward direction of travel” means the direction in which the child carrier moves when the child carrier is pushed forward in the longitudinal direction. The “reverse direction of travel” means the direction in which the child carrier moves when the child carrier is pulled backward in the longitudinal direction. The “front” of the child carrier means the position of the child carrier facing the forward direction of travel in the forward mode, the “rear” of the child carrier means the position of the child carrier facing away from the forward direction of travel in the forward mode, the “left” of the child carrier means the “left” when looking forward from the rear of the child carrier, and the “right” of the child carrier means the “right” when looking forward from the rear of the child carrier. Other “front”, “rear”, “left” and “right” mentioned in the text also have similar meanings.

[0071] An exemplary embodiment of the child carrier provided by the present invention is described below by taking a child stroller as an example.

[0072] First embodiment

[0073] Figure 1 and Figure 2A child carrier in a forward mode and a rearward mode according to a first embodiment of the present invention is shown. The child carrier 10 includes a frame 100, a seat assembly 200, a backrest assembly 300, a rider 400, and a linkage mechanism 500. The seat assembly 200 is mounted on the frame 100 and is configured to be movable relative to the frame 100 along the longitudinal direction X (i.e., the front-rear direction) of the frame 100 between a first position and a second position. The backrest assembly 300 is mounted on the seat assembly 200 and is configured to be adjustable in angle relative to the seat assembly 200, i.e., its tilt angle is adjustable. The rider 400 is generally U-shaped. The rider 400 includes a transverse grip 401 and two push rods 402 connected to opposite ends of the grip 401, respectively. The rider 400 is pivoted to the frame 100 and is configured to drive the seat assembly 200 to move relative to the frame 100 along the longitudinal direction X of the frame 100 when pivoting relative to the frame 100. Two push rods 402 of the rider 400 are pivotally connected to the frame 100 at the left and right sides of the frame 100. The linkage mechanism 500 is disposed on one side of the seat assembly 200 and is connected to the backrest assembly 300. The linkage mechanism 500 is configured so that the angle adjustment range of the backrest assembly 300 relative to the seat assembly 200 is the same when the seat assembly 200 moves between the first position and the second position.

[0074] It should be understood that the same angle adjustment range of the backrest assembly 300 relative to the seat assembly 200 described herein refers to the same angle adjustment range of the backrest assembly 300 without the use of the belt adjustment device 800 (see Figure 6 ) When adjusting the angle of the backrest assembly 300 relative to the seat assembly 200, when the seat assembly 200 moves from a first position to a second position or from a second position to the first position, the angle of the backrest assembly 300 relative to the seat assembly 200 remains substantially the same or unchanged within a certain range.

[0075] The frame 100 includes two lateral frames 110 disposed opposite to each other, and two seat tubes 120 respectively connected to the two lateral frames 110. The seat assembly 200 is disposed on the seat tubes 120. For ease of description, the following description is made by taking the lateral frame 110 and the seat tube 120 located on one side of the frame 100 as an example.

[0076] The lateral frame 110 includes a front foot 111 and a rear foot 112. The front foot 111 and the rear foot 112 are connected to each other and form a roughly triangular structure with the ground. The lateral frame 110 also includes an armrest 113 connected to the front foot 111 and the rear foot 112, and the armrest 113 is arranged roughly parallel to the ground or slightly inclined relative to the ground. The front foot 111, the rear foot 112 and the armrest 113 are pivoted at the same pivot point (or called a pivot axis). The lateral frame 110 also includes a support member 114. In this embodiment, the support member 114 is pivoted to the armrest 113 and the seat tube 120 respectively. In some other embodiments, the support member 114 can also be connected to the rear foot 112 and the armrest 113 respectively, and form a roughly triangular structure with the armrest 113 and the rear foot 112.

[0077] The seat assembly 200 may be movably (e.g., slidably) disposed on the seat tube 120 along the longitudinal direction X of the frame 100. The seat assembly 200 includes a movable bracket 210 and a seat plate (not shown) disposed on the movable bracket 210. The movable bracket 210 is movably (e.g., slidably) disposed on the seat tube 120 along the longitudinal direction X of the frame 100. Figure 4 and Figure 5 The movable bracket 210 includes a tubular portion 211, which is slidably mounted on the seat tube 120 along the longitudinal direction of the frame 100. It is understood that the movable bracket 210 can also be movably arranged on the seat tube 120 along the longitudinal direction of the frame 100 in other ways, such as by providing a slide groove.

[0078] See also Figure 4 The backrest assembly 300 includes two backrest tubes 310 parallel to each other for supporting a backrest board (not shown). The backrest assembly 300 is mounted on the seat assembly 200 through the backrest tubes 310. The bottom of the backrest tube 310 is pivotally connected to the movable bracket 210, so that the angle can be adjusted relative to the movable bracket 210 and the seat tube 120. It can be understood that in this article, the angle of the backrest assembly 300 relative to the seat assembly 200 is equivalent to the angle of the plane where the two backrest tubes 310 are located relative to the plane where the two seat tubes 120 are located. When the backrest boards are mounted on the two backrest tubes 310 and the seat boards are mounted on the two movable brackets 210, the angle of the backrest assembly 300 relative to the seat assembly 200 is equivalent to the angle of the backrest board relative to the seat board. The angle between the backrest assembly 300 and the seat assembly 200 is equivalent to the angle between the backrest board and the seat board in the seating space defined by the backrest board and the seat board.

[0079] See also Figure 3 , the backrest assembly 300 includes a backrest strap 323 (for clarity, the backrest strap in some other figures has been omitted, for example, Figure 1 and Figure 2 The back strap is not shown, but Figure 1and Figure 2 The child carrier in can be similar to Figure 8 The backrest belt 323 is provided, and the two ends of the backrest belt 323 are respectively connected to the two lateral frames 110, and the middle and upper part of the backrest tube 310 is supported on the backrest belt 323. The rider 400 can pivot relative to the frame 100, so that the child carrier 10 is in the forward mode (see Figure 1 ) and backward mode (see Figure 2 ) between the two positions. The rider 400 is disposed on the outside of the lateral frame 110 and is pivotally connected to the support member 114 of the lateral frame 110. The rider 400 is pivotally connected to the support member 114 of the lateral frame 110 by a pin 410 (see Figure 4 ) is pivotally connected to the lateral frame 110 (eg, the support member 114). The pin 410 may be inserted into the lateral frame 110 (eg, the support member 114).

[0080] like Figure 3 As shown, the rider 400 may be connected to the seat assembly 200, for example, to the movable bracket 210 of the seat assembly 200, via a transmission mechanism 600. The transmission mechanism 600 may be configured to convert the pivoting of the rider 400 relative to the frame 100 into the movement of the seat assembly 200 along the longitudinal direction of the frame 100, for example, convert the pivoting of the rider 400 relative to the frame 100 into the movement (e.g., sliding) of the movable bracket 210 relative to the seat tube 120 along the longitudinal direction of the frame 100.

[0081] The transmission mechanism 600 is disposed on the inner side of the lateral frame 110 . The rider 400 is connected to the transmission mechanism 600 via a pin shaft 410 passing through the lateral frame 110 .

[0082] In this embodiment, the transmission mechanism 600 is a connecting rod mechanism. Figures 3 to 7As shown, the transmission mechanism 600 includes a first link 610 and a second link 620 disposed on a side of the movable bracket 210 away from the lateral frame 110. The first end of the first link 610 is pivotally connected to the rider 400 through the pin 410. Specifically, one end of the pin 410 is fixedly connected to the rider 400, and the other end of the pin 410 passes through the lateral frame 110 (for example, through the support member 114) and the seat tube 120 and is fixedly connected to the first end of the first link 610. For example, the rider 400 and the first end of the first link 610 may be provided with a square hole, and the two ends of the pin 410 may be square structures and may be clamped in the square hole, so as to achieve a fixed connection between the pin 410 and the rider 400 and the first end of the first link 610. The second end of the first link 610 is pivotally connected to the first end of the second link 620. For example, another pin (not shown) may pass through the second end of the first link 610 and the first end of the second link 620 and be fixed to the movable bracket 210, so that the second end of the first link 610 is pivotally connected to the first end of the second link 620 and can pivot relative to the movable bracket 210. The other pin may also pass through the backrest tube 310 to realize the pivotal connection between the backrest tube 310 and the movable bracket 210, and when the movable bracket 210 moves along the longitudinal direction X of the frame 100, the backrest tube 310 can move synchronously with the movable bracket 210. The second end of the second link 620 is pivotally connected to the seat assembly 200, for example, pivotally connected to the movable bracket 210. When the rider 400 pivots relative to the frame 100, the rider 400 can drive the first link 610 to rotate, and drive the seat assembly 200 to move along the longitudinal direction of the frame 100 through the first link 610 and the second link 620, for example, driving the movable bracket 210 to move (for example, slide) relative to the seat tube 120 along the longitudinal direction of the frame 100. It can be understood that the above description is only an example of the transmission mechanism 600, and the transmission mechanism 600 can also adopt other configurations, for example, the first link 610 and the second link 620 can be arranged between the lateral frame 110 and the seat tube 120, for example, the number of links can be changed, and for example, other transmission mechanisms other than link mechanisms can also be adopted.

[0083] According to the child carrier of the present embodiment, when the user turns the rider 400, the rider 400 drives the movable bracket 210 to move relative to the seat tube 120 along the longitudinal direction of the frame 100 through the transmission mechanism 600. At this time, the bottom of the backrest tube 310 will move synchronously with the movable bracket 210, and without adjusting the length of the backrest strap 323, the middle and upper part of the backrest tube 310 is supported on the backrest strap 323 and will not move with the movable bracket, thereby causing the angle of the backrest tube 310 relative to the seat assembly 200 to change.

[0084] The linkage mechanism 500 may be connected to the seat assembly 200 or the rider 400, and connected to the backrest assembly 300. The linkage mechanism 500 is configured such that when the rider 400 pivots relative to the frame 100, the backrest assembly 300 moves relative to the frame 100 along the longitudinal direction of the frame 100 without changing its angle relative to the seat assembly 200. In other words, when the rider 400 pivots relative to the frame 100, the rider 400 drives the seat assembly 200 to move relative to the frame 100 along the longitudinal direction X of the frame 100, and the seat assembly 200 drives the backrest assembly 300 to move synchronously with the seat assembly 200 along the longitudinal direction X of the frame 100 through the linkage mechanism 500, so that the angle of the backrest assembly 300 relative to the seat assembly 200 remains unchanged. Specifically, the linkage mechanism 500 can be connected to the rider 400 or the seat assembly 200 on one hand, and can be connected to the backrest strap 323 of the backrest assembly 300 on the other hand, so that when the rider 400 pivots relative to the frame 100, the middle and upper part of the backrest tube 210 and the bottom of the backrest tube 210 are driven to move synchronously through the backrest strap 323, that is, the backrest tube 310 and the movable bracket 210 move synchronously along the longitudinal direction of the frame without pivoting relative to the movable bracket 210. It should be understood that the middle and upper part of the backrest tube 310 described herein is relative to the bottom of the backrest tube 310, and refers to a position at a certain distance from the bottom of the backrest tube 310.

[0085] It should be understood that the angle of the backrest assembly 300 relative to the seat assembly 200 remains unchanged, which means that: without the use of the belt adjustment device 800 (see Figure 6 ) when the angle of the backrest assembly 300 relative to the seat assembly 200 is adjusted (for example, without adjusting the length of the backrest strap 323), when the rider 400 pivots relative to the frame 100, the angle of the backrest assembly 300 relative to the seat assembly 200 remains substantially the same or unchanged within a certain range.

[0086] In this embodiment, the linkage mechanism 500 is respectively connected to the seat assembly 200 (for example, the movable bracket 210) and the end of the backrest belt 323, and is constructed to drive the end of the backrest belt 323 to move synchronously with the seat assembly 200 when the seat assembly 200 moves along the longitudinal direction of the frame 100. Since the middle and upper parts of the backrest tube 310 are supported on the backrest belt 323, the middle and upper parts and the bottom of the backrest tube 310 are moved synchronously with the seat assembly 200 without changing the angle between the backrest tube 310 and the seat assembly 200.

[0087] See also Figure 4 , Figure 6 and Figure 7The linkage mechanism 500 includes a linkage rod 510 having a first end and a second end opposite to each other. The first end of the linkage rod 510 is connected to the movable bracket 210, and the second end of the linkage rod 510 is movably mounted to the lateral frame 110 relative to the frame 100 in the longitudinal direction, and is fixedly connected to the end of the backrest belt 323, so that when the seat assembly 200 moves relative to the frame 100 in the longitudinal direction of the frame 100, the first end of the linkage rod 510 drives the second end of the linkage rod 510 and thus drives the end of the backrest belt 323 to move in the longitudinal direction X, thereby driving the middle and upper part of the backrest tube 210 to move in the longitudinal direction X. In this way, when the seat assembly 200 moves relative to the frame 100 in the longitudinal direction of the frame 100, the middle and upper part of the backrest tube 210 and the bottom of the backrest tube 210 can move synchronously, so as not to pivot relative to the seat assembly 200 and change its angle relative to the seat assembly 200.

[0088] The linkage rod 510 is disposed between the lateral frame 110 and the movable bracket 210. The lateral frame 110 is provided with a first slide groove 101 extending along the longitudinal direction X of the frame 110, and the second end of the linkage rod 510 is slidably mounted to the first slide groove 101. In this embodiment, the first slide groove 101 is disposed on the armrest 113, and the length of the first slide groove 101 is the same as the distance between the first position and the second position of the seat assembly 200. In some other embodiments, the length of the first slide groove 101 may be different from the distance between the first position and the second position of the seat assembly 200, for example, the length of the first slide groove 101 is greater than the distance. See Figure 4 In this embodiment, the second end of the linkage rod 510 is installed on the inner side of the armrest 113 (i.e., the side of the armrest 113 facing the seat assembly 200). The second end of the linkage rod 510 can be slidably mounted to the first slide groove 101 and connected to the end of the backrest strap 323. In some other embodiments, the second end of the linkage rod 510 can also be installed inside the armrest 113.

[0089] like Figures 4 to 7 As shown, the first end of the linkage rod 510 is connected to the movable bracket 210. A first protrusion 512 is provided on the side of the first end of the linkage rod 510 facing the movable bracket 210. The movable bracket 210 is provided with a through hole 214 for receiving the first protrusion 512 (see Figure 5 and Figure 7 ), the first protrusion 512 cooperates with the through hole 214 to connect the linkage rod 510 with the movable bracket 210. The second protrusion 212 extends from the through hole 214 in a direction away from the linkage rod 510 (see Figure 7 ), the first protrusion 512 is inserted into the second protrusion 212. A recess 213 is provided on the side of the movable bracket 210 facing the linkage rod 510 (see Figure 5), the position of the recess 213 corresponds to the position of the through hole 214, the first end of the linkage rod 510 can be received in the recess 213, and the recess 213 can limit the first end of the linkage rod 510 from rotating counterclockwise relative to the movable bracket 210. The linkage mechanism 500 also includes an elastic member 520 (for example, a torsion spring), the elastic member 520 is arranged around the outer periphery of the second protrusion 212, one end of the elastic member 520 abuts between the convex rib 215 of the movable bracket 210 and the second protrusion 212, and the other end of the elastic member 520 is hooked on the side of the linkage rod 510 away from the movable bracket 210, thereby limiting the first end of the linkage rod 510 from rotating clockwise relative to the movable bracket 210. Specifically, when the driver 400 changes from the forward mode (see Figure 1 ) Backward mode (see Figure 2 ) pivots, the recess 213 can limit the counterclockwise rotation of the first end of the linkage rod 510, thereby driving the second end of the linkage rod 510 to slide along the first direction X1 (i.e., the positive direction of travel in the forward mode) (see Figure 7 ), that is, the second end of the linkage rod 510 is driven to slide forward. Figure 2 )Forward mode (see Figure 1 ) pivots, the elastic member 520 can limit the clockwise rotation of the first end of the linkage rod 510, thereby driving the second end of the linkage rod 510 to slide along the second direction X2 (i.e., the forward direction of travel in the reverse mode) (see Figure 7 ), that is, driving the second end of the linkage rod 510 to slide backward.

[0090] In this embodiment, when the user rotates the handlebar 400 to move in the forward mode (see Figure 2 ) and backward mode (see Figure 2 ), the rider 400 drives the movable bracket 210 of the seat assembly 200 to move (e.g., slide) on the seat tube 210 along the longitudinal direction of the frame 100 through the transmission mechanism 600, and the bottom of the backrest tube 310 of the backrest assembly 300 moves along the longitudinal direction of the frame 100 with the movable bracket 210, and at the same time, the movable bracket 210 drives the linkage rod 510 to move along the longitudinal direction of the frame 100, thereby driving the end of the backrest strap 323 and thus driving the middle and upper part of the backrest tube 310 to move along the longitudinal direction of the frame 100 with the seat assembly 200. In this way, the middle and upper part of the backrest tube 310 and the bottom of the backrest tube 310 both move synchronously with the seat assembly 200, so that the angle of the backrest assembly 300 relative to the seat assembly 200 will not be changed.

[0091] Second embodiment

[0092] Figures 8 to 15A child carrier according to a second embodiment of the present invention is shown. The main difference between the second embodiment and the first embodiment is the arrangement of the linkage mechanism, and the same or similar parts as the first embodiment are not repeated here.

[0093] In this embodiment, the linkage mechanism 500 is connected to the rider 400 and the end of the backrest strap 323 , respectively, and is configured to move the end of the backrest strap 323 and the seat assembly 200 synchronously when the rider 400 pivots relative to the frame 100 .

[0094] See also Fig.10 and Fig.11 The linkage mechanism 500 includes a transmission assembly 530 and a sliding member 540. The sliding member 540 is slidably disposed on the lateral frame 110 along the longitudinal direction X of the frame 100, and is connected to the end of the backrest strap 323. The transmission assembly 530 is respectively connected to the pin 410 penetrating the lateral frame 110 (for example, the support member 114) and the sliding member 540. The transmission assembly 530 is configured to convert the pivoting of the rider 400 relative to the frame 100 (i.e., the rotation of the pin 410) into the sliding of the sliding member 540 along the longitudinal direction X of the frame 100, so as to drive the end of the backrest strap 323 and thus drive the middle and upper part of the backrest tube 310 and the bottom of the backrest tube 310 to move synchronously.

[0095] Specifically, the transmission assembly 530 may include a linkage gear 531, one or more driven gears 532, and an output gear 533. The linkage gear 531 may be connected to the pin 410 via a traction member 550 and a driving wheel 560. The driving wheel 560 is fixedly connected to the pin 410 and can rotate with the pin 410. For example, the driving wheel 560 may be sleeved on the pin 410. Fig.11 , the traction member 550 is connected to the driving wheel 560 and the linkage gear 531 respectively, and when the driving wheel 560 rotates, the linkage gear 531 can be driven to rotate through the traction member 550. For example, the traction member 550 can be a cable, one end of the cable is fixed to a first position of the linkage gear 531, the other end of the cable extends to the driving wheel 560 and passes around the driving wheel 560, then extends back to the linkage gear 531 and is fixed to a second position opposite to the first position, and the portion of the cable wound around the driving wheel 560 is also fixed to a certain position of the driving wheel 560 (for example: Fig.11When the driving wheel 560 rotates, the length of the cable portion on both sides of the driving wheel 560 and the linkage gear 531 changes, so that the linkage gear 531 also rotates. The linkage gear 531 meshes with one or more driven gears 532, and one or more driven gears 532 mesh with the output gear 533, and the output gear 533 meshes with the sliding member 540, so that the rotation of the linkage gear 533 can drive the sliding member 540 to move along the longitudinal direction of the frame 100. The sliding member 540 is provided with a rack, which can have a plurality of teeth 541 (see Fig.12 ) so as to mesh with the output gear 533, thereby driving the sliding member 540 to slide. Since the rotation angle of the pin shaft 410 is small, by providing one or more driven gears 532, and making the number of teeth (i.e., the number of teeth) of the driven gear 532 smaller than the number of teeth of the linkage gear 531, the rotation of the linkage gear 531 at a small angle can be magnified into the rotation of the output gear 533 at a large angle, so that the sliding member 540 can move a large distance. It should be understood that the above detailed description is only an example, and those skilled in the art can make several adjustments, changes and improvements to it, for example, the driving wheel 560 can be omitted, the traction member 550 can be connected to the pin shaft 410 and the linkage gear 531 respectively, and when the pin shaft 410 rotates, the linkage gear 531 can be driven to rotate through the traction member 550. For example, in appropriate cases, one or more driven gears 532 or the output gear 533 can be omitted, and the linkage gear 531 can be directly meshed with the sliding member 540. For another example, the number of driven gears 532 can be adjusted according to actual conditions.

[0096] See also Figures 12 to 15, the transmission assembly 530 is provided with a plurality of driven gears 532. The driven gears 532 include a first driven gear 5321, a second driven gear 5322 and a third driven gear 5323. The first driven gear 5321 is meshed between the linkage gear 531 and the second driven gear 5322, and the third driven gear 5323 is meshed between the output gear 533 and the second driven gear 5322. The first driven gear 5321 includes a first gear portion 5321a and a second gear portion 5321b which are coaxially arranged and connected to each other, so that the second gear portion 5321b rotates synchronously with the first gear portion 53221a. Optionally, the first gear portion 5321a is integrally formed on or fixedly connected to the second gear portion 5321 by gluing, welding or the like. The first gear portion 5321a is located on the side of the second gear portion 5321b facing the linkage gear 531. The first gear portion 5321a meshes with the linkage gear 531, and the second gear portion 5321b meshes with the second driven wheel 5322. The number of teeth of the first gear portion 5321a is smaller than the number of teeth of the second gear portion 5321b, and smaller than the number of teeth of the linkage gear 531. When the linkage gear 531 rotates, the first gear portion 5321a is driven to rotate, and the second gear portion 5321b rotates together with the first gear portion 5321a, thereby driving the second driven gear 5322 to rotate. In this way, the smaller angle of rotation of the linkage gear 531 is magnified into a larger rotation angle of the first gear portion 5321a, and the smaller transmission distance of the first gear portion 5321a is magnified into a larger transmission distance of the second gear portion 5321b by the synchronously rotating second gear portion 5321b, and transmitted to the second driven gear 5322. As a result, the transmission distance of the linkage gear 531 (that is, the transmission distance of the driving wheel 560, see Fig.11 ) is enlarged once. It can be understood that the transmission distance of the gear is the circumference of the gear corresponding to the rotation angle of the gear. The gear includes any one of the linkage gear 531, the driven gear 532 and the output gear 533.

[0097] Correspondingly, the third driven gear 5323 includes a first gear portion 5323a and a second gear portion 5323b which are coaxially arranged and connected to each other, so that the second gear portion 5323b rotates synchronously with the first gear portion 53223a. Optionally, the first gear portion 5323a is integrally formed on or fixedly connected to the second gear portion 5321 by gluing, welding, etc. The first gear portion 5323a is located on the side of the second gear portion 5323b facing the second driven gear 5322. The first gear portion 5323a meshes with the second driven gear 5322, and the second gear portion 5323b meshes with the third driven gear 5323. The number of teeth of the first gear portion 5323a is less than the number of teeth of the second gear portion 5323b, and less than the number of teeth of the second driven gear 5322. In this way, the rotation of the second driven gear 5322 at a smaller angle is amplified into a larger rotation angle of the first gear portion 5323a, and the second gear portion 5323b that rotates synchronously is used to amplify the smaller transmission distance of the first gear portion 5323a into a larger transmission distance of the second gear portion 5323b. Thus, the third driven gear 5323 performs a second amplification on the transmission distance of the linkage gear 531, and the amplified transmission distance is transmitted to the output gear 533, and is converted into the movement of the sliding member 540 in the longitudinal direction X through the meshing between the output gear 533 and the sliding member 540. Specifically, by adjusting the number of teeth or the ratio of the number of teeth of the first gear portion 5321a and the second gear portion 5321b of the first driven gear 5321, and / or, by adjusting the number of teeth or the ratio of the number of teeth of the first gear portion 5323a and the second gear portion 5323b of the third driven gear 5323, the movement distance of the sliding member 540 in the longitudinal direction X can be adjusted.

[0098] In this embodiment, when the driving wheel 560 fixed on the pin 410 rotates a small distance, the transmission distance of the driving wheel 560 is converted into the rotation of the linkage gear 531 through the traction rope 550. Then, the transmission distance of the linkage gear 531 is transmitted to the output gear 533 multiple times through the multiple driven gears 532, and then amplified and converted into the movement of the sliding member 540 in the longitudinal direction X. In this way, when the rider 400 drives the pin 410 to rotate, the sliding member 540 can be driven by the transmission mechanism 500 to move a suitable distance in the longitudinal direction X, so that the angle between the backrest assembly 300 and the seat assembly 200 remains unchanged.

[0099] In some other embodiments, the second driven gear 5322 may not be provided between the first driven gear 5321 and the third driven gear 5323, and the first gear portion 5323a of the third driven gear 5323 is directly meshed with the second gear portion 5321b of the first driven gear 5321. In some other embodiments, only the first driven gear 5321 may be provided to amplify the transmission distance of the linkage gear 531 once; or multiple gears having structures more similar to the first driven gear 5321 and / or the third driven gear 5323 may be provided to amplify the transmission distance of the linkage gear 531 more than twice.

[0100] In this embodiment, the linkage mechanism 500 is disposed inside the lateral frame 110, so that it is not visible outside the lateral frame 110. The lateral frame 110 has one or more cavities inside, and the transmission assembly 530, the sliding member 540, the traction member 550 and the driving wheel 560 are all disposed in the one or more cavities of the lateral frame 110.

[0101] In this embodiment, the transmission assembly 530 (including the linkage gear 531, one or more driven gears 532 and the output gear 533) and the sliding member 540 are all disposed in the cavity in the armrest 113. The driving wheel 560 is disposed in the cavity of the support member 114 and is connected to the linkage gear 531 through the traction member 550.

[0102] See also Figures 13 to 15 The sliding member 540 may include a sliding portion 543 and a connecting portion 542, a rack is formed on the connecting portion 542, and teeth 541 may be provided on the connecting portion 542. The connecting portion 542 is used to mesh with the output gear 533. When the linkage gear 531 rotates, the connecting portion 542 and thus the sliding portion 543 may be driven to slide along the longitudinal direction of the frame 100 through the driven gear 532 and the output gear 533.

[0103] See also Figures 12 to 15 The child carrier 10 further includes a mounting seat 700 disposed in a cavity within the armrest 113. The mounting seat 700 includes a housing 710, and a baffle 711 is disposed on the inner wall of the housing 710. The baffle 711 divides the housing 710 into a first accommodation space 701 and a second accommodation space 702. The sliding portion 543 of the sliding member 540 may be disposed in the first accommodation space 701 and slidably disposed on the baffle 711. Fig.13, the baffle 711 may be provided with a first limiting portion 712 and a second limiting portion 713 on both sides thereof, for limiting the sliding limit position of the sliding portion 543. The distance between the first limiting portion 712 and the second limiting portion 713 along the longitudinal direction of the vehicle frame 100 may be the same as the distance that the seat assembly 200 moves along the longitudinal direction of the vehicle frame 100 between its first position and the second position. The linkage gear 531, one or more driven gears 532 and the output gear 533 may be provided in the second accommodation space 702, at least one of which is engaged with the connecting portion 542 of the sliding member 540. The inner wall of the baffle 711 may be provided with one or more protrusions in the second accommodation space 702, for mounting the linkage gear 531, one or more driven gears 532 and the output gear 533.

[0104] See also Figures 13 to 15 The mounting seat 700 may further include a cover 720, which may be mounted to the housing 710 and define a second accommodation space 702 together with the housing 710. A linkage gear 531, one or more driven gears 532, and an output gear 533 may be disposed between the cover 720 and the housing 710. A tooth 541 is disposed at one end of the connecting portion 542 of the sliding member 540, and may cross the upper end of the cover 720 and extend outside the cover 720. An opening 722 may be disposed on the outside of the cover 720 (see Fig.14 ), the opening 722 is connected to the second accommodating space 702. The linkage gear 531, one or more driven gears 532 or the output gear 533 can be meshed with the connecting portion 542 of the sliding member 540 through the opening 722. Specifically, the output gear 533 is rotatably disposed in the second accommodating space 702, and at least a portion of the gear teeth of the output gear 533 is exposed from the opening 722 to mesh with the teeth 541 of the sliding member 540. More specifically, the axial dimension of the output gear 533 (that is, the thickness of the output gear 533) is greater than the axial dimension of the one or more driven gears 532 directly meshing therewith (that is, the thickness of the driven gear 532).

[0105] Specifically, Fig.14 As shown, the outer side of the cover body 720 may be provided with a step 721, and one end of the connecting portion 542 of the sliding member 540 is provided with teeth 541 and may extend to the step 721. The opening 722 is provided through the step 721, and the teeth of the linkage gear 531, one or more driven gears 532 or the output gear 533 may extend from the opening 722 to mesh with the teeth 541 of the sliding member 540.

[0106] See also Figure 8, a second slide groove 102 extending along the longitudinal direction X of the frame 100 is provided on the lateral frame 110 (for example, the armrest 113), and the end of the backrest strap 323 can pass through the second slide groove 102 and be fixedly connected to the sliding member 540 provided in the cavity of the lateral frame 110, and the end of the backrest strap 323 can slide in the second slide groove 102. When the sliding member 540 slides along the longitudinal direction of the frame 100, the end of the backrest strap 323 can be driven to move in the second slide groove 102 along the longitudinal direction of the frame 100. The length of the second slide groove 102 along the longitudinal direction of the frame 100 can be the same as the distance between the first position and the second position of the seat assembly 200. In some other embodiments, the length of the second slide groove 102 along the longitudinal direction of the frame 100 can also be different from the distance between the first position and the second position of the seat assembly 200.

[0107] See also Fig.14 The sliding member 540 may be provided with a groove or a through hole 544 so as to be connected with the end of the backrest strap 323.

[0108] In this embodiment, when the user rotates the rider 400 to switch between the forward mode and the backward mode, the pin 410 rotates with the rider 400, thereby driving the driving wheel 560 to rotate. The rotation of the driving wheel 560 drives the linkage gear 531 to rotate through the traction member 550, thereby driving the sliding member 540 to slide through one or more driven gears 532 and the output gear 533, and thus drives the end of the backrest belt 323 to move along the longitudinal direction of the frame 100, and makes the upper and middle parts of the backrest tube 310 move synchronously with the bottom of the backrest tube 310, so as to prevent the angle between the backrest assembly 300 and the seat assembly 200 from changing.

[0109] Third embodiment

[0110] Fig.16 and Fig.17 The third embodiment of the child carrier according to the present invention is shown. The third embodiment is mainly different from the first embodiment or the second embodiment in the arrangement of the linkage mechanism, and the same or similar aspects as the first embodiment or the second embodiment are not repeated here.

[0111] See also Fig.16 and Fig.17In this embodiment, the linkage mechanism 500 includes a guide member 580 and a connector 590. The guide member 580 is attached to the armrest 113 of the lateral frame 110. The backrest belt 323 is connected to the connector 590, and one of the backrest belt 323 and the connector 590 passes through the guide member 580. The connector 590 is also connected to the seat assembly 200 and can move along the longitudinal direction X of the frame 100 with the seat assembly 200, so that the backrest tube 310 is driven to move synchronously with the seat assembly 200 through the backrest belt 323. The guide member 580 is, for example, a pulley or a boss, but is not limited thereto. One of the backrest belt 323 and the connector 590 is at least partially wound around the guide member 580 and can slide relative to the guide member 580. Optionally, the end of the backrest belt 323 passes through the guide member 580 and is connected to the connector 590. The connecting member 590 is, for example, a hook, and the connecting member 590 is hooked on the seat assembly 200, and the backrest belt 323 is at least partially wound around the guide member 580. Alternatively, one end of the connecting member 590 is connected to the seat assembly 200, and the other end of the connecting member 590 is connected to the backrest belt 323 after passing through the guide member 580. The connecting member 590 is, for example, a rope, and the connecting member 590 is at least partially wound around the positioning member 580.

[0112] The guide member 580 can play a role of supporting the end of the backrest belt 323, so that the backrest tube 310 can be supported on the middle portion of the backrest belt 323. When the seat assembly 200 moves along the longitudinal direction X of the frame 100, the end of the backrest belt 323 moves through the connecting member 590, thereby causing the length of the portion of the backrest belt 323 between the guide member 580 and the backrest tube 310 to change, thereby causing the middle and upper portion of the backrest tube 310 to move along the longitudinal direction X of the frame 100. Specifically, when the seat assembly 200 moves forward along the longitudinal direction X, the length of the portion of the backrest belt 323 between the guide member 580 and the backrest tube 310 becomes shorter, so that the middle and upper portion of the backrest tube 310 moves forward. When the seat assembly 200 moves rearward in the longitudinal direction X, the length of the portion of the backrest belt 323 between the guide 580 and the backrest tube 310 becomes longer, so that the upper and middle portion of the backrest tube 310 moves rearward.

[0113] The guide member 580 is positioned so that after the end of the backrest belt 323 passes through it, the middle and upper part of the backrest tube 310 can be supported on the backrest belt 323. For example, the guide member 580 is usually located higher than the bottom of the backrest tube 310, for example, attached to the lateral frame 110, for example, attached to the handrail 113 of the lateral frame 110. The guide member 580 can be, for example, a smooth cylindrical rod, so that the portion of the backrest belt 323 passing through the guide member 580 can slide on the guide member 580. The guide member 580 can also be, for example, a roller, so as to facilitate the portion of the backrest belt 323 passing through the guide member 580 to slide thereon. It can be understood that the guide member 580 is not limited thereto, and other configurations can be adopted, as long as it can support the portion of the backrest belt 323 passing through it and allow the portion of the backrest belt 323 passing through it to slide thereon. The number of guide members 580 may be one or more, and may be set according to actual needs. In some embodiments, the connector 590 may be a separate connector, such as a cable, which is respectively connected to the seat assembly 200 (such as the movable support 210 or the seat) and the end of the backrest belt 323. In some embodiments, the connector 590 is a part of the backrest belt 323, or the connector 590 may be integrally formed with the backrest belt 323. In other words, the end of the backrest belt 323 may be directly connected to the seat assembly 200 after passing through the guide member 580. It is understood that the connector 590 is not limited thereto, and other configurations may be used as long as the above functions can be achieved.

[0114] In this embodiment, when the seat assembly 200 moves along the longitudinal direction X of the vehicle frame 100, the seat assembly 200 moves the end of the backrest belt 323 through the connecting member 590, thereby causing the length of the portion of the backrest belt 323 between the guide member 580 and the backrest tube 310 to change, thereby causing the middle and upper portion of the backrest tube 310 to move along the longitudinal direction X of the vehicle frame 100. Since the middle and upper portion of the backrest tube 310 can move synchronously with the bottom of the backrest tube 310, the angle between the backrest assembly 300 and the seat assembly 200 is prevented from changing.

[0115] Fourth embodiment

[0116] Figures 18 to 24 A child carrier according to a fourth embodiment of the present invention is shown. The following mainly describes the differences between the fourth embodiment and the first embodiment, and the same or similar aspects as the first embodiment will not be repeated.

[0117] See also Fig.18 and Fig.24, the second end of the linkage rod 510 is installed in the armrest 113. Specifically, the armrest 113 is provided with a receiving groove 1131, which is generally a U-shaped groove with an opening facing downward, and the first slide groove 101 passes through one side wall of the receiving groove 1131. The second end of the linkage rod 510 extends into the receiving groove 1131 from below and is slidably installed in the first slide groove 101 through the sliding pin 519. In this way, the connection between the linkage rod 510 and the armrest 113 can be more concise and beautiful.

[0118] The linkage mechanism 500 further includes a fixing plate 570. The second end of the linkage rod 510 and the fixing plate 570 are both slidably mounted on the first slide groove 101 via a sliding pin 519. Fig.18 and Fig.24 , the fixing piece 570 is arranged on the side of the armrest 113 facing the seat assembly 200. In some other embodiments, the fixing piece 570 can also be arranged in the armrest 113, that is, in the receiving groove 1131. In this embodiment, the end of the backrest strap 323 is connected to the fixing piece 570. Specifically, the fixing piece 570 is provided with a connecting hole 572, and the end of the backrest strap 323 is inserted into the connecting hole 572. In other words, the end of the backrest strap 323 is connected to the second end of the linkage rod 510 through the fixing piece 570 and the sliding pin 519. In this way, the fixing piece 570 and the second end of the linkage rod 510 can slide synchronously with the sliding pin 519 along the first sliding groove 101, and then the end of the backrest strap 323 and the second end of the linkage rod 510 can move synchronously. Specifically, the sliding pin 519 passes through the fixing piece 570, the first sliding groove 101 and the second end of the linkage rod 510 in sequence, and is limited in the fixing piece 570 and the linkage rod 510. More specifically, see Fig.24The fixing plate 570 has a first through hole 571, the second end of the linkage rod 510 has a second through hole 518, and the first end of the sliding pin 519 passes through the first through hole 571, the first slide groove 101 and the second through hole 518 and is accommodated in the accommodation groove 1131. The diameter of the first end of the sliding pin 519 is slightly larger than the diameter of the second through hole 518, so that the first end of the sliding pin 519 can pass through the second through hole 518 and be stopped at the side of the second through hole 518 away from the fixing plate 570. The second end of the sliding pin 519 forms a flange 5192 that extends laterally out of the sliding pin 519, so that the flange 5192 of the sliding pin 519 is stopped at the side of the first through hole 571 of the fixing plate 570 away from the linkage rod 510. In this way, the sliding pin 519 can be prevented from being separated from the linkage rod 510 and / or the fixing plate 570 during use. In some other embodiments, the sliding pin 519 can also be limited in the linkage rod 510 and the fixing plate 570 by other suitable methods. For example, the first end of the sliding pin 519 can be interference fit with the second through hole 518, or a nut can be connected to the second end of the sliding pin 519; for another example, the first sliding groove 101 passes through the side walls of the receiving groove 1131, the sliding pin 519 is inserted into the first sliding groove on the side walls of the receiving groove 1131, and the first end of the sliding pin 519 forms a flange or a connecting nut.

[0119] See also Figure 20 to Figure 23 The frame 100 is also provided with a locking mechanism 190. The locking mechanism 190 can lock the frame 100 in a position such as Fig.18 and Fig. 20The support member 114 of the lateral frame 110 includes a first support frame 114a and a second support frame 114b. The first end of the first support frame 114a is pivotally connected to the second end of the second support frame 114b. The second end of the first support frame 114a is pivotally connected to the handrail 113. The first end of the second support frame 114b is pivotally connected to the rear foot 112. Specifically, the push rod 402 of the rider 400 is pivotally connected to the first support frame 114a and the second support frame 114b respectively through the pin 410. In other words, the pin 410 is inserted into the first support frame 114a, the second support frame 114b and the push rod 402 of the rider 400, and defines the pivot axis Z of the three. The locking mechanism 190 can lock the first support frame 114a relative to the second support frame 114b to limit the pivoting between the first support frame 114a and the second support frame 114b, thereby limiting the folding of the frame 100. Specifically, when the locking mechanism 190 is in the locked state, the first support frame 114a is fixed relative to the second support frame 114b, and the first support frame 114a is restricted from pivoting relative to the second support frame 114b, thereby restricting the folding or unfolding of the lateral frame 110, that is, restricting the folding or unfolding of the frame 100. When the locking mechanism 190 is in the unlocked state, the first support frame 114a is allowed to pivot relative to the second support frame 114b, thereby allowing the frame 100 to fold or unfold. Fig.19 Folded state as shown, or by Fig.19 The folded state shown is Fig.18 The locking mechanism 190 can be released by any suitable unlocking mechanism 180 (ie, the locking mechanism 190 is driven to switch from the locked state to the unlocked state).

[0120] The locking mechanism 190 includes a locking member 191. The second support frame 114b is provided with a locking groove 1142. Fig.18 , Figure 21 to Figure 23 The locking groove 1142 includes an unfolding locking groove 1142a disposed at the second end of the second support frame 114b. A sliding groove 1141 is disposed on the side of the first support frame 114a facing the push rod 402 of the rider 400, and the locking member 191 is slidably disposed in the sliding groove 1141. The locking member 191 has a locking end 1912 and is switchable between a locking position and a release position. When the frame 100 is in the unfolded state and the locking member 191 is located at the locking position, when the locking mechanism 190 is in the locked state, the locking end 1912 of the locking member 191 is suitable for being inserted into the unfolding locking groove 1142a to limit the folding of the frame 100 (i.e., locking the frame 100 in the unfolded state).

[0121] The locking member 191 includes a locking portion 1911 and a resisting portion 1913 connected to each other. The locking portion 1911 is slidably disposed in the sliding groove 1141 and is suitable for being inserted into the locking groove 1142. The lower end of the locking portion 1911 is formed as a locking end 1912. One end of the resisting portion 1913 is connected to the locking portion 1911, and the other end protrudes toward the push rod 402 of the rider 400. The resisting portion 1913 is suitable for being resisted by the unlocking mechanism 180.

[0122] See also Fig.19 and Fig.25 The locking groove 1142 also includes a retractable locking groove 1142b. Fig. 22 As shown, the folding locking groove 1142b is arranged on the second support frame 114b and is arranged opposite to the unfolding locking groove 1142a, that is, the folding locking groove 1142b and the unfolding locking groove 1142a are respectively arranged on the pivot axis Z (that is, the pin 410, see Fig.23 ) on both sides. Specifically, the folding locking groove 1142b and the unfolding locking groove 1142a are respectively distributed on the circumferential surface with the pivot axis Z as the axis center. In this way, when the frame 100 is in the unfolded state, the unfolding locking groove 1142a is opposite to the locking end 1912, and when the frame 100 switches to the folded state, the second support frame 114b rotates around the pivot axis Z relative to the first support frame 114a, and the folding locking groove 1142b is opposite to the locking end 1912. In this embodiment, when the frame 100 is in the folded state and the locking member 191 is located in the locked position, the locking mechanism 190 is in the locked state, and the locking end 1912 is suitable for being inserted into the folding locking groove 1142b to limit the unfolding of the frame 100. At this time, the locking member 191 is not locked with the rear foot 112. When the locking member 191 is at the unlocking position, the locking mechanism 190 is in the unlocking state, and the locking end 1912 is disengaged from the locking slot 1142, so that the frame 100 can be folded or unfolded, that is, the frame 100 can be freely switched between the unfolded state and the folded state.

[0123] See also Fig.23 The locking mechanism 190 further includes a locking reset member 192, which is disposed between the locking member 191 and the second support frame 114b. Specifically, the first support frame 114a is provided with a receiving groove 1145, which is in communication with the sliding groove 1141 and is recessed relative to the bottom wall of the sliding groove 1141. At least a portion of the locking member 191 extends into the receiving groove 1145. The locking reset member 192 is located in the receiving groove 1145 and is adapted to provide a force for the locking member 191 so that the locking member 191 moves toward the locked position. In this way, after the locking mechanism 190 is unlocked, under the action of the locking reset member 192, the locking mechanism 190 is constantly switched to the locked state.

[0124] See also Figures 19 to 23 The locking mechanism 190 also includes a fixing seat 193, which is disposed on the rear foot 112 and is provided with a locking hole 1931. The locking member 191 is also provided with a locking portion 1914, which is connected to the locking portion 1911, that is, the locking portion 1914 is connected to the pushing portion 1913 through the locking portion 1911, so that the locking portion 1914 moves together with the pushing portion 1913. The locking portion 1914 has a locking end 1915 extending toward the rear foot 112. When the locking member 191 is in the locking position, the locking end 1915 is adapted to be inserted and matched with the locking hole 1931 to limit the relative movement between the support member 114 and the rear foot 112, thereby limiting the relative movement between the front foot 111 and the rear foot 112, and further enhancing the overall rigidity of the lateral frame 110. See FIG. Fig.21 and Fig. 22 The first support frame 114a, the second support frame 114b, the seat tube 120 and the push rod 402 of the rider 400 are pivotally connected to each other through the pin 410. When the frame 100 is in the unfolded state and the locking member 191 is in the locked position, on the one hand, the locking end 1912 of the locking member 191 is inserted and matched with the unfolded locking groove 1142a to relatively lock the first support frame 114a and the second support frame 114b, and on the other hand, the locking end 1915 of the locking member 191 is inserted and matched with the locking hole 1931 to relatively lock the first support frame 114a and the rear foot 112, so that the front foot 111, the rear foot 112 and the seat tube 120 form a stable triangular structure, and the handrail 113, the first support frame 114a and the rear foot 112 form a stable triangular structure, so that the angle between the front foot 111 and the rear foot 112 does not change, and the structure of the frame 100 is more stable. For example, when the child carrier 10 is pushed in the reverse direction, when the rear foot 112 encounters an obstacle (e.g., a step obstacle), the angle between the front foot 111 and the rear foot 112 will not change and shake, and the overall rigidity of the lateral frame 110 (i.e., the frame 100) is improved, so that the child carrier 10 can easily cross the obstacle. At the same time, the locking end 1915 is inserted and matched with the locking hole 1931 of the fixing seat 193, which can further limit the folding of the frame 100. When the frame 100 is in the folded state and the locking member 191 is in the locked position, the locking end 1915 is disengaged from the locking hole 1931, and the locking end 1912 is inserted and matched with the folding locking groove 1142b, thereby limiting the unfolding of the frame 100. When the locking member 191 is at the unlocking position, the locking end 1915 is disengaged from the locking hole 1931 , and the locking end 1912 is disengaged from the locking slot 1142 , that is, the locking end 1912 is separated from both the unfolding locking slot 1142 a and the folding locking slot 1142 b , thereby allowing the frame 100 to be folded or unfolded.

[0125] The second support frame 114b is provided with a guide groove 1143, and the locking portion 1914 is slidably disposed in the guide groove 1143 to restrict the locking portion 1914 (i.e., the locking member 191) from moving in a predetermined direction to prevent the locking member 191 from deviating during the movement. One end of the guide groove 1143 is an open end or is provided with a through hole 1144 to allow the locking end 1915 of the locking portion 1914 to extend out of the guide groove 1143 and be inserted and matched with the locking hole 1931.

[0126] See also Fig.23 , the locking member 191 is integrally formed. Optionally, the locking portion 1914 can be fixedly connected to the locking portion 1911 by, for example, gluing, welding, etc.; or, the locking portion 1914 can be detachably connected to the locking portion 1911 by, for example, threading, snapping, etc.

[0127] See also Fig. 22 and Fig.23 The fixing seat 193 is disposed at a position where the rear foot 112 is adjacent to the first support frame 114a and the second support frame 114b and is pivotally connected. The fixing seat 193 is detachably connected to the rear foot 112. Optionally, the fixing seat 193 may be fixed to the rear foot 112 by, for example, gluing, welding, etc., or may be integrally formed on the rear foot 112. In some other embodiments, the fixing seat 193 may not be disposed, but the locking hole 1931 may be directly disposed on the rear foot 112.

[0128] In this embodiment, the locking mechanism 190 can be released by a release mechanism 180 provided on the rider 400. The release mechanism 180 includes an operating member 181 provided on the handle 401 and a driving member 182 provided on two push rods 402. The operating member 181 can be operated and can drive the two driving members 182 to move through, for example, two traction members (not shown). The driving member 182 is provided with a driving portion 1821 protruding toward the lateral frame 110. When the child carrier 10 is in the forward mode (i.e., the forward mode, see Figure 1 ), the extension direction of the guide groove 1143 of the frame 100 is parallel to the extension direction of the push rod 402 of the rider 400. The driving member 182 pushes the locking member 191 of the locking mechanism 190. Specifically, the driving portion 1821 abuts against the lower side of the abutting portion 1913. At this time, operating (for example, pressing) the operating member 181 can drive the driving member 182 to move upward along the push rod 402. At the same time, the driving member 182 drives the locking member 191 to move upward to the unlocking position through the abutment between the driving portion 1821 and the abutting portion 1913, so that the locking end 1912 of the locking member 191 disengages from the locking groove 1142, and the locking end 1915 disengages from the locking hole 1931, thereby realizing the unlocking of the locking mechanism 190 and allowing the frame 100 to be folded. When the child carrier 10 is in the rearward mode (i.e., the reverse use state, see Fig.18 and Fig. 22 ), since the driving member 182 is separated from the locking member 191, if the operating member 181 is operated at this time, the release mechanism 180 cannot drive the locking mechanism 190 to switch from the locked state to the released state, that is, the locking mechanism 190 does not respond to the release mechanism 180, and the locking mechanism 190 remains in the locked state and restricts the folding of the frame 100. Of course, the locking mechanism 190 can also be released by other suitable release mechanisms 180, as long as the locking mechanism 190 can be released.

[0129] The operating principle of unfolding, locking and folding the child carrier according to this embodiment will be described below.

[0130] See also Fig.18 and Fig. 22 When the frame 100 of the child carrier is in the unfolded state, the locking mechanism 190 is in the locked state, the locking end 1912 of the locking member 191 is inserted and matched with the unfolded locking groove 1142a, and the locking end 1915 of the locking member 191 is inserted and matched with the locking hole 1931 on the fixing seat 193. In this way, the frame 100 is locked in the unfolded state, and the change of the angle between the front leg 111 and the rear leg 112 can be limited, making the frame 100 more stable.

[0131] When the frame 100 needs to be folded, the child carrier is first switched to the forward mode. Then, the operating member 181 of the release mechanism 180 is pressed, and the operating member 181 drives the two driving members 182 to move along the two push rods 402 respectively. Each driving member 182 pushes the corresponding pushing portion 1913 of the locking member 191 to move along the guide groove 1143, so that the locking member 191 moves from the locking position to the unlocking position. At this time, the locking end 1915 is disengaged from the locking hole 1931, and the locking end 1912 is disengaged from the unfolding locking groove 1142a, so that the frame 100 can be folded. See FIG. Fig.19 and Fig.25 When the frame 100 is completely folded, the operating member 181 is released, the operating member 181 and each driving member 182 are reset respectively, and the locking member 191 moves from the unlocking position to the locking position under the action of the locking reset member 192, so that the locking end 1912 of the locking member 191 is inserted and matched with the folding locking groove 1142b, thereby locking the frame 100 in the folded position. When the frame is in the folded state, the extension direction of the push rod 402 of the rider 400 is parallel to the extension direction of the guide groove 1143.

[0132] When the frame needs to be unfolded, the operating member 181 is pressed, and the operating member 181 drives the two driving members 182 to move along the two push rods 402 respectively, and each driving member 182 pushes the corresponding pushing portion 1913 of the locking member 191 to move along the guide groove 1143, so that the locking member 191 moves from the locking position to the unlocking position. At this time, the locking end 1912 is separated from the folded locking groove 1142b, and the frame 100 can be unfolded. Fig.18 When the vehicle frame 100 is fully unfolded, the operating member 181 is released, the operating member 181 and each driving member 182 are reset respectively, and the locking member 191 moves from the unlocking position to the locking position under the action of the locking reset member 192, so that the locking end 1912 of the locking member 191 is inserted and matched with the unfolded locking groove 1142a, and the locking end 1915 is inserted and matched with the locking hole 1931.

[0133] In this embodiment, the overall rigidity of the lateral frame 110 can be enhanced by the insertion cooperation between the locking portion 1914 of the locking member 191 and the locking hole 1931, so that when the child carrier 10 encounters an obstacle, the angle between the front leg 111 and the rear leg 112 remains basically unchanged, so that the child carrier 10 can easily overcome the obstacle during the pushing process.

[0134] It can be understood that the locking mechanism 190 and the unlocking mechanism 180 provided in this embodiment are also applicable to the child carriers in the first to third embodiments or other similar embodiments.

[0135] Fifth embodiment

[0136] Figures 26 to 30 A child carrier according to a fifth embodiment of the present invention is shown. The following mainly describes the differences between the fifth embodiment and the fourth embodiment, and the same or similar aspects as the fourth embodiment will not be repeated.

[0137] In this embodiment, the child carrier 10 further includes a headrest plate 900, which is pivotally connected to the backrest assembly 300. The backrest tube 310 of the backrest assembly 300 is generally U-shaped, including a transverse top section 311 and two side sections 312 respectively connected to opposite ends of the top section 311. The two side sections 312 are parallel to each other, and one end of each side section 312 away from the top section 311 is pivotally connected to the movable bracket 210, so that the backrest tube 310 can be pivoted relative to the movable bracket 210, so that the angle between the backrest assembly 300 and the seat assembly 200, that is, the supplementary angle of the inclination angle of the backrest assembly 300, can be adjusted. The headrest plate 900 is pivotally connected to the top section 311 of the backrest tube 310. When the rider 400 pivots relative to the frame 100 and the seat assembly 200 drives the backrest assembly 300 to move synchronously along the longitudinal direction X of the frame 100, the angle of the backrest assembly 300 relative to the seat assembly 200 remains unchanged, and the angle of the headrest plate 900 relative to the backrest assembly 300 remains unchanged.

[0138] The angle between the backrest assembly 300 and the seat assembly 200 is adjustable within a predetermined angle range defined by a minimum angle and a maximum angle. The minimum angle is, for example, about 95°, and the maximum angle is, for example, about 180°. According to the angle between the backrest assembly 300 and the seat assembly 200, the use state of the child carrier 10 includes a sitting state and a lying state. In the sitting state, the angle between the backrest assembly 300 and the seat assembly 200 is the minimum angle, and in the lying state, the angle between the backrest assembly 300 and the seat assembly 200 is the maximum angle. By adjusting the angle between the backrest assembly 300 and the seat assembly 200, the child carrier 10 can be switched between the sitting state and the lying state.

[0139] In the present embodiment, the headrest plate 900 is configured such that as the angle of the backrest assembly 300 relative to the seat assembly 200 changes, the angle of the headrest plate 900 relative to the backrest assembly 300 also changes. When the child carrier 10 is in a sitting state, the backrest assembly 300 is located in a relatively upright position relative to the seat assembly 200 (i.e., the backrest assembly 300 is in an upright position), and the headrest plate 900 is generally parallel to the backrest assembly 300. When the child carrier 10 is in a lying state, the backrest assembly 300 is generally parallel to the seat assembly 200 (i.e., the backrest assembly 300 is in a horizontal position), and the headrest plate 900 is generally perpendicular to the backrest assembly 300. In the lying state, the headrest plate 900, which is generally perpendicular to the backrest assembly 300, can act as a head stopper to prevent the head of a child lying flat in the child carrier 10 from sliding out or protruding from the child carrier 10.

[0140] The bottom of the headrest plate 900 is pivotally connected to the top section 311 of the backrest tube 310. The headrest plate 900 is pivotable relative to the backrest assembly 300 within a range of an angle of about 90° to about 180° with the backrest assembly 300. A headrest plate elastic member 910 is provided between the headrest plate 900 and the backrest assembly 300. The headrest plate elastic member 910 is adapted to bias the headrest plate 900 so that the headrest plate 900 remains substantially parallel to the seat assembly 200. In the following, the state in which the headrest plate 900 is substantially parallel to the seat assembly 200 is regarded as the initial state of the headrest plate 900. In the present embodiment, the headrest plate elastic member 910 is in the form of a double torsion spring as a whole, and has two spring portions 912 and a U-shaped abutment portion 911, and the two spring portions 912 are respectively located at both ends of the U-shaped abutment portion 911. The two spring parts 912 of the headrest elastic member 910 are arranged around the top section 311 of the backrest tube 310, and the U-shaped abutment part 911 of the headrest elastic member 910 abuts against the head support surface of the headrest 900 suitable for supporting the head of the child in the child carrier 10. The head support surface of the headrest 900 can be pivoted toward the back support surface defined by the backrest assembly 300 to pivot from a position parallel to the back support surface to a position perpendicular to the back support surface. The headrest elastic member 910 is suitable for applying an elastic restoring force to the headrest 900 through the U-shaped abutment part 911 to keep the headrest 900 substantially parallel to the seat assembly 200, that is, to keep the head support surface substantially parallel to the back support surface. In some other embodiments, the headrest elastic member 910 can be a single torsion spring, a leaf spring, a special-shaped spring or other forms of elastic members.

[0141] The top of the headrest board 900 is connected to the vehicle frame 100 via a driving member 320. In the present embodiment, the driving member 320 is in the form of a strap, and the top of the headrest board 900 is connected to the fixing plate 570 via the driving member 320. The driving member 320 is adapted to pull the headrest board 900 to pivot relative to the backrest assembly 300 during the process of the backrest assembly 300 pivoting relative to the seat assembly 200 to switch the child carrier 10 from the sitting state to the lying state. Specifically, the driving member 320 between the fixing plate 570 and the headrest plate 900 generally maintains a constant length. When the tilt angle of the backrest assembly 300 is increased, the distance between the top section 311 of the backrest assembly 300 and the fixing plate 570 increases, and the distance between the headrest plate 900 connected to the top section 311 and the fixing plate 570 also increases accordingly. The driving member 320 will tighten the top of the headrest plate 900. The driving member 320 applies a pulling force to the headrest plate 900, causing the headrest plate elastic member 910 to twist and deform, thereby driving the headrest plate 900 to pivot relative to the backrest assembly 300 in the direction from the head support surface to the back support surface. Figures 28 to 30 As shown, when the child carrier 10 is in a flat state, under the pulling force of the driving member 320, the headrest plate 900 will be substantially perpendicular to the backrest assembly 300. At this time, the headrest plate 900 will act as a head baffle.

[0142] When the child carrier 10 is switched from a lying position to a sitting position, that is, when the tilt angle of the backrest assembly 300 is reduced, the distance between the top section 311 of the backrest assembly 300 and the fixing plate 570 is reduced, and the distance between the headrest board 900 connected to the top section 311 and the fixing plate 570 is also reduced accordingly. The pulling force of the driving member 320 on the headrest board 900 is weakened, and the elastic potential energy stored in the headrest board elastic member 910 due to torsional deformation is released. The elastic restoring force of the headrest board elastic member 910 will drive the headrest board 900 to pivot relative to the backrest assembly 300 in the direction in which the head support surface is away from the back support surface. Fig.26 and 27 As shown, when the child carrier 10 is in a sitting state, the driving member 320 is basically in a relaxed state, and there is no pulling force on the headrest 900. Under the elastic restoring force of the headrest elastic member 910, the headrest 900 returns to its initial state, that is, the headrest 900 is substantially parallel to the seat assembly 200.

[0143] See also Fig.26 and 27 , two mounting holes 920 are provided at the top of the headrest board 900 in the transverse direction, and the two mounting holes 920 are respectively close to two opposite side parts of the headrest board 900 in the transverse direction. In this embodiment, the driving member 320 is in the form of a single strap, and the two ends of the driving member 320 are respectively fixed to the two mounting holes 920. The fixing method of each end of the driving member 320 and the corresponding mounting hole 920 can be achieved by any suitable method known in the art, for example, the end of the driving member 320 is connected to a positioning member whose size is larger than the aperture of the mounting hole 920 after passing through the mounting hole 920, or the end of the driving member 320 is connected to a positioning column fixed to the headrest board 900 after passing through the mounting hole 920, which will not be repeated here. In some other embodiments, the headrest board 900 may not be provided with the mounting hole 920. Alternatively, the headrest board 900 may be provided with any other fixing member such as a buckle, a belt clip, a belt hook, a belt seat, etc., as long as the end of the driving member 320 can be fixed.

[0144] The driving member 320 includes a first headrest strap 321, a second headrest strap 322 and a backrest strap 323. In this embodiment, the driving member 320 is in the form of a single strap, and the first headrest strap 321, the second headrest strap 322 and the backrest strap 323 correspond to three sections of the driving member 320, respectively, wherein the first headrest strap 321 and the second headrest strap 322 are the head and tail sections of the single strap, respectively, and the backrest strap 323 is the middle section of the single strap between the first headrest strap 321 and the second headrest strap 322. The length of the first headrest strap 321 is equal to the length of the second headrest strap 322. The first ends of the first headrest strap 321 and the second headrest strap 322 are respectively fixed to the headrest plate 900. The second ends of the first headrest belt 321 and the second headrest belt 322 are respectively connected to the fixing piece 570 of the armrest 113 of the corresponding one of the two lateral frames 110. The backrest belt 323 is used to support the middle and upper part of the backrest tube 310. The two ends of the backrest belt 323 are respectively connected to the fixing piece 570 of the armrest 113 of the corresponding one of the two lateral frames 110. The central part of the backrest belt 323 is set in the belt adjustment device 800. The belt adjustment device 800 is arranged at the rear side of the backrest of the child carrier 10. The length of the part of the backrest belt 323 from the belt adjustment device 800 to each fixing piece 570, that is, the length of the backrest belt 323 between the fixing piece 570 and the belt adjustment device 800 can be adjusted by the belt adjustment device 800, and this length is hereinafter referred to as the backrest support effective length. The belt adjustment device 800 is configured to adjust the length of the backrest belt 323 (i.e., the central portion of the backrest belt 323) accommodated therein, thereby adjusting the effective length of the backrest support. When the effective length of the backrest support is extended, the backrest assembly 300 is allowed to pivot backward relative to the seat assembly 200 to increase the tilt angle of the backrest assembly 300, and when the effective length of the backrest support is shortened, the backrest assembly 300 is forced to pivot forward relative to the seat assembly 200 to reduce the tilt angle of the backrest assembly 300.

[0145] See also Fig.28 and Fig.30, the fixing plate 570 is provided with a connecting hole 572, and the driving member 320 passes through the connecting hole 572. Specifically, for the driving member 320 in the form of a single strap, the driving member 320 further includes a connecting section extending from the second end of each of the first headrest strap 321 and the second headrest strap 322 and extending to the end of the backrest strap 323, and one end of the connecting section passes through the connecting hole 572 and is connected to the other end of the connecting section by, for example, sewing, to form a closed annular section bypassing the connecting hole 572. Thus, the second end of each of the first headrest strap 321 and the second headrest strap 322 is connected to the fixing plate 570 via the connecting section, and the end of the backrest strap 323 is also connected to the fixing plate 570 via the connecting section. From the connection section of the driving member 320 bypassing the connection hole 572 as the starting section, the driving member 320 branches out the first headrest strap 321 and the backrest strap 323 of the driving member 320, or the second headrest strap 322 and the backrest strap 323 at the sewing connection of the connection section. In this embodiment, the driving member 320 can first pass through the connection hole 572 of the fixing plate 570, and then the two ends of the connection section are sewn together, and then the fixing plate 570 is installed to the armrest 113. In this embodiment, there are two fixing plates 570, and the driving member 320 forms a sewing connection after bypassing each fixing plate 570. The portion of the driving member 320 between each sewing connection and the headrest plate 900 is the first headrest strap 321 or the second headrest strap 322, and the portion of the driving member 320 between the two sewing connections is the backrest strap 323. In some other embodiments, any suitable method may be used instead of sewing connection, for example, the two ends of the connecting section may be knotted together, as long as the first headrest strap 321 and the backrest strap 323, or the second headrest strap 322 and the backrest strap 323 are fixed relative to the fixing plate 570.

[0146] As described above, in the present embodiment, the driving member 320 is in the form of a strap. Using a strap to simultaneously realize the first headrest strap 321, the second headrest strap 322 and the backrest strap 323 can facilitate the fixation of the various parts of the driving member 320, save the process, and also simplify the structure of the fixing parts used to fix the various parts of the driving member 320. In some other embodiments, the driving member 320 may include multiple straps. For example, three straps may be included, one of which is used as the backrest strap 323, and the other two are used as the first headrest strap 321 and the second headrest strap 322 respectively. In other words, the first headrest strap 321, the second headrest strap 322 and the backrest strap 323 are respectively realized by at least one strap. The connecting section of the driving member 320 can be realized by the end of the backrest strap 323, or the second end of the first headrest strap 321 and the second headrest strap 322. Thus, the first headrest strap 321, the second headrest strap 322 and the backrest strap 323 can be fixed to the fixing plate 570. In this case, the connecting section may not be a closed annular section as in the present embodiment, but may be any form that can be connected to the fixing plate.

[0147] In this embodiment, side panels 330 are respectively installed on the two lateral sections 312 of the backrest assembly 300. Each of the first headrest strap 321 and the second headrest strap 322 of the driving member 320 is suitable for passing through the corresponding side panel 330 to be connected to the headrest plate 900. The side panel 330 is provided with a guide groove 331 and two guide portions 332. The two guide portions 332 are located at both ends of the guide groove 331, and each guide portion 332 is provided with a through hole connected to the guide groove 331. Each of the first headrest strap 321 and the second headrest strap 322 is suitable for passing through the guide groove 331 and the two guide portions 332 of the corresponding side panel 330. Specifically, if the sewn connection is used as the starting point of the first headrest strap 321 or the second headrest strap 322, the first headrest strap 321 or the second headrest strap 322 sequentially passes through the guide portion 332 located at the lower end or front end of the guide groove 331, the guide groove 331, and the guide portion 332 located at the upper end or rear end of the guide groove 331, and then is connected to the headrest plate 900. The side plate 330 is also provided with a strip hole 332 suitable for the backrest strap 323 to pass through. If the sewn connection on one side of the frame 100 is used as the starting point of the backrest strap 323, the backrest strap 323 sequentially passes through the strip hole 332 of the side plate 330 on the same side as the sewn connection, the strap adjustment device 800, and the strip hole 332 of the side plate 330 on the different side from the sewn connection, and then reaches the sewn connection on the other side. In some other embodiments, any suitable structure or element may be used to guide the first headrest strap 321, the second headrest strap 322 and the backrest strap 323, as long as the parts of the driving member 320 and the driving member 320 and other parts of the child carrier 10 do not interfere with each other during operation.

[0148] In this embodiment, both ends of the backrest belt 323 for supporting the middle and upper part of the backrest tube 310 are respectively connected to the fixing piece 570 of the armrest 113 of the corresponding one of the two lateral frames 110, and both ends of each of the first headrest belt 321 and the second headrest belt 322 are respectively connected to the headrest board 900 and the corresponding fixing piece 570. When the rider 400 pivots relative to the frame 100 and the seat assembly 200 drives the backrest assembly 300 to move along the longitudinal direction X of the frame 100, since the fixing piece 570 also moves synchronously along the longitudinal direction X of the frame 100, the distance between the fixing piece 570 and the belt adjusting device 800 provided on the backrest assembly 300 and the distance between the fixing piece 570 and the top section 311 of the backrest assembly 300 remain unchanged, and accordingly, the angle of the backrest assembly 300 relative to the seat assembly 200 remains unchanged, and the angle of the headrest board 900 relative to the backrest assembly 300 also remains unchanged. When the inclination angle of the backrest assembly 300 is adjusted to, for example, switch the child carrier 10 from a sitting position to a lying position, the belt adjustment device 800 releases at least a portion of the backrest belt 323 contained therein, so that the effective length of the backrest support of the driving member is extended, thereby allowing the backrest assembly 300 to pivot rearward relative to the seat assembly 200 to increase the inclination angle of the backrest assembly 300 until the backrest assembly 300 is substantially parallel to the seat assembly 200. At the same time, during the process of the backrest assembly 300 pivoting backward relative to the seat assembly 200, the distance between the fixing piece 570 and the top section 311 of the backrest assembly 300 increases. Since the lengths of the first headrest strap 321 and the second headrest strap 322 remain unchanged, the first headrest strap 321 and the second headrest strap 322 will pull the top of the headrest plate 900, so that the headrest plate 900 pivots relative to the backrest assembly 300 in the direction from the head support surface toward the back support surface until the headrest plate 900 is substantially perpendicular to the backrest assembly 300. In this way, in the lying state, the headrest plate 900 can act as a head stopper to prevent the head of a child lying flat in the child carrier 10 from sliding out or extending out of the child carrier 10.

[0149] It can be understood that the configuration related to the headrest and the straps provided in this embodiment is also applicable to the child carriers in the first to fourth embodiments or other similar embodiments described above.

[0150] See also Fig.28In this embodiment, a reinforcing rod 115 extending substantially in the transverse direction is provided between the two lateral frames 110 of the frame 100. Both ends of the reinforcing rod 115 are fixedly connected to the two lateral frames 110. Specifically, one end of the reinforcing rod 115 can be fixedly connected to the lower part of the handrail 113 of one of the lateral frames 110, and the other end of the reinforcing rod 115 can be fixedly connected to the lower part of the handrail 113 of the other lateral frame 110. The end of the reinforcing rod 115 can be fixedly connected to the lower part of the handrail 113 by, for example, welding, or can be fixedly connected to the lower part of the handrail 113 by bonding, key connection, pin connection, riveting, etc. The reinforcing rod 115 can enhance the overall strength of the frame 100 and prevent the frame 100 from shaking left and right. In particular, when a child is shaking in the child carrier, the frame 100 can be prevented from shaking violently.

[0151] It can be understood that the reinforcing rod 115 provided in this embodiment is also applicable to the child carrier in the first to fourth embodiments or other similar embodiments.

[0152] Sixth embodiment

[0153] The sixth embodiment of the present invention provides a belt adjustment device. As described in the above embodiments, the belt adjustment device can be arranged at the rear side of the backrest of the child carrier. Of course, the belt adjustment device can also be arranged at other suitable positions of the child carrier as long as it is convenient for the user to operate.

[0154] See also Fig.31 and Fig.32 The strap adjustment device 900 includes a first outer cover 910, a second outer cover 920, and an inner cover 930 located between the first outer cover 910 and the second outer cover 920. Two holes 934 are provided on opposite sides of the inner cover 930 for the backrest strap 323 to pass through. The strap adjustment device 900 also includes a reel 940, which is configured to be rotatable between the inner cover 930 and the second outer cover 920 for the backrest strap 323 (see Fig.33 ) is wound thereon. The two ends of the back strap 323 extend out of the reel 940 and extend out of the strap adjustment device 900 through the hole 934. It should be noted that Fig.33 In the figure, the backrest strap 323 is only illustrated by lines.

[0155] like Fig.33As shown, the reel 940 includes a first reel 940A and a second reel 940B in an annular shape. The first reel 940A and the second reel 940B are connected by an intermediate connecting portion 940C, so that a winding groove 941 extending in the circumferential direction is formed between the first reel 940A and the second reel 940B. The first reel 940A and the intermediate connecting portion 940C together form a placement hole 942 located in the reel 940. Two guide grooves 945 and 945' are also provided on the first reel 940A. The guide grooves 945 and 945' can be symmetrically arranged or asymmetrically arranged on the first reel 940A, and their specific positions can be adjusted according to actual needs.

[0156] The strap adjustment device 900 also includes a spring 950 located inside the reel 940. The spring 950 is disposed in a placement hole 942 in the reel 940. The strap adjustment device 900 also includes a connector 960, which is used to fix the strap adjustment device 900 to the backrest. For example, the connector 960 can be disposed on the front side of the backrest plate of the backrest, and the second outer cover 920 can be disposed on the rear side of the backrest plate of the backrest, and then, fasteners such as screws can be used to sequentially penetrate the connector 960, the backrest plate, the second outer cover 920 and the first outer cover 910, thereby fixing the strap adjustment device 900 to the backrest. Of course, the connector 960 can also be omitted, and the housing of the strap adjustment device 900 can be directly fixed to the backrest by fixing members, such as screws.

[0157] As described in the above embodiment, the backrest belt 323 can support the middle and upper part of the backrest of the child carrier 10. When the backrest assembly 300 pivots relative to the seat assembly 200, the effective backrest supporting length of the backrest belt 323 required to support the backrest will change. In order to keep the backrest belt 323 in a tensioned state to support the backrest, the reel 940 winds the backrest belt 323 (for example, the central part of the backrest belt 323) thereon, and winds or unwinds this part of the backrest belt 323 as needed by rotating itself. The circumferential side of the reel 940 is provided with a winding groove 941, and the backrest belt 323 is wound in the winding groove 941.

[0158] See also Fig. 9The spring spring 950 is configured to drive the reel 940 to rotate along the winding direction D1, whereby the reel 940 can be driven to rotate along the winding direction D1 by means of the elastic restoring force of the spring spring 950, and at this time the backing band 323 is wound on the reel 940. On the other hand, when the reel 940 rotates along the unwinding direction D2 opposite to the winding direction D1, the spring spring 950 is wound up, and at this time the backing band 323 is unwound from the reel 940. Specifically, the spring spring 950 is wound and arranged in the arrangement hole 942 in the reel 940, the first end 951 of the spring spring 950 is inserted into the fixing column 931 of the inner cover 930, and the second end 952 of the spring spring 950 is inserted into the slot 943 on the side wall of the arrangement hole 942 of the reel 940.

[0159] In order to prevent the spring 950 from being separated from the placement hole 942 of the winding disk 940, an auxiliary disk 970 is arranged outside the placement hole 942, and the auxiliary disk 970 is arranged to block the spring 950. In addition, the auxiliary disk 970 also plays a role in assisting the winding backing belt 323. Fig.34 The auxiliary disk 970 includes a body 971 and a first limiting piece 972 and a second limiting piece 973 extending outward from the outer periphery of the body 971. The first limiting piece 972 and the second limiting piece 973 are spaced apart in the axial direction to form a limiting passage 974 for the backrest strap 323 to pass through. The limiting passage 974 can prevent the backrest strap 323 from slipping off the auxiliary disk 970.

[0160] In this embodiment, the backrest strap 323 only goes around the outer periphery of half of the auxiliary plate 970, and the first limiting piece 972 and the second limiting piece 973 are only arranged at the outer periphery of half of the auxiliary plate 970. In some other embodiments, the first limiting piece 972 and the second limiting piece 973 may also be arranged on the entire outer periphery of the auxiliary plate 970.

[0161] The following will describe in detail the manner in which the backrest strap 323 is wound around the reel 940. The backrest strap 323 enters the housing of the strap adjustment device 900 through a hole 934 on the circumferential side of the inner cover 930, and then enters the placement hole 942 through one of the guide grooves 945 on the reel 940, and then passes through the limiting passage 974 of the auxiliary disk 970, bypassing the portion of the reel 940 provided with the first limiting piece 972 and the second limiting piece 973, so that the backrest strap 323 bypasses the placement hole 942, and then the backrest strap 323 leaves the placement hole 942 through another guide groove 945' on the reel 940, and then winds several turns in the winding groove 941 of the reel 940, and finally extends out of the housing of the strap adjustment device 900 through another opening on the opposite circumferential side of the inner cover 930. By allowing the backrest belt 323 to pass through the limiting channel 974 of the auxiliary disk 970 , the tension of the backrest belt 323 can be increased, thereby improving the stability of the backrest belt 323 being unwound from the reel 940 .

[0162] When the angle of the backrest assembly 300 relative to the seat assembly 200 is adjusted to switch the child carrier 10 from the lying state to the sitting state, it is necessary to shorten the effective length of the backrest support of the backrest belt 323. The reel 940 can wind up the slack backrest belt 323, thereby allowing the spring spring 950 to drive the reel 940 to rotate along the winding direction D1. When the backrest assembly 300 is pivoted to be substantially perpendicular to the seat assembly 200 (i.e., the backrest assembly 300 is in the upright position), most of the backrest belt 323 (e.g., the backrest belt 323) is wound on the reel 940, and only a small portion is left extending out of the reel 940 and fixed to the fixing plate 570. At this time, the reel 940 can no longer rotate along the winding direction D1.

[0163] When the angle of the backrest assembly 300 relative to the seat assembly 200 is adjusted to switch the child carrier 10 from the sitting state to the lying state, it is necessary to extend the effective length of the backrest support of the backrest belt 323. When the backrest assembly 300 is pivoted to be substantially parallel to the seat assembly 200 (i.e., the backrest assembly 300 is in a horizontal position), most of the backrest belt 323 (e.g., the backrest belt 323) is unwound from the reel 940, and only a small portion located on the reel 940 remains. At this time, the reel 940 can no longer rotate in the unwinding direction D2. In addition, during the process of unwinding the backrest belt 323 from the reel 940, the reel 940 is driven to rotate in the unwinding direction D2, so that the spring spring 950 located in the reel 940 is wound up.

[0164] See also Fig.32 , Fig.33 , Fig.37 and Fig.38The reel 940 is provided with a coaxially rotating ratchet 944, and a ratchet pawl 990 cooperating with the ratchet 944 is also provided in the strap adjusting device 900. The ratchet 944 is attached to the second disk 940B of the reel 940, and can achieve unidirectional positioning.

[0165] like Fig.37 As shown, the rotation of the ratchet 944 in the unwinding direction D2 is selectively blocked by the pawl 990, so that the reel 940 cannot rotate in the unwinding direction D2. However, the rotation of the ratchet 944 in the winding direction D1 is not blocked by the pawl 990. When the rotation of the ratchet 944 on the reel 940 in the unwinding direction D2 is blocked by the pawl 990, the reel 940 cannot rotate in the unwinding direction D2 either, and the strap adjustment device 900 is in a locked state, and the ratchet 944 can only rotate in the winding direction D1, so that the backrest assembly 300 can only freely pivot to the desired position from the upright position and stay at the desired position, but cannot pivot to the horizontal position.

[0166] like Fig.38 As shown in FIG. 1 , when the pawl 990 moves to the unlocking position so that the rotation of the ratchet 944 on the reel 940 in the unwinding direction D2 is no longer blocked by the pawl 990, the belt adjusting device 900 is in the unlocking state, and the ratchet 944 can rotate in both the winding direction D1 and the unwinding direction D2, so that the backrest assembly 300 can be pivoted to a desired position not only toward the upright position but also toward the horizontal position. After the backrest assembly 300 is pivoted to a desired position toward the upright position or toward the horizontal position, as long as the pawl 990 is returned to the position as shown in FIG. Fig.37 In the locked position shown, the rotation of the ratchet 944 on the reel 940 in the unwinding direction D2 is blocked again by the pawl 990, and the backrest assembly 300 will stay in the desired position. Through the cooperation of the ratchet 944 and the pawl 990, the belt adjustment device 900 can achieve one-way locking and one-way unlocking of the backrest assembly 300 pivoting toward the horizontal position.

[0167] It can be understood that the above description is an embodiment in which the rotation of the ratchet wheel 944 along the unwinding direction D2 is selectively blocked by the pawl 990 , but the present invention is not limited thereto.

[0168] In the present embodiment, the pawl 990 is arranged to be able to move between a locking position and a release position. In the locking position, the pawl 990 blocks the backrest assembly 300 from pivoting relative to the seat assembly 200, and in the release position, the pawl 990 allows the backrest assembly 300 to pivot relative to the seat assembly 200.

[0169] See also Fig.37 and Fig.38The connecting side 991 of the pawl 990 is pivotally connected to the connecting portion 932 on the inner cover 930, so that the free side 992 of the pawl 990 can pivot relative to the connecting portion 932. Fig.37 As shown, when the free side 992 of the pawl 990 is pivoted to the locked position, the engaging portion 993 of the free side 992 of the pawl 990 engages with the ratchet teeth on the ratchet wheel 944, thereby blocking the ratchet wheel 944 from rotating in the unwinding direction D2. Fig.38 As shown, when the free side 992 of the pawl 990 is pivoted to the unlocking position, the engaging portion 993 of the pawl 990 is disengaged from the ratchet teeth on the ratchet 944, thereby allowing the ratchet 944 to rotate along the unwinding direction D2. In some other embodiments, the pawl 990 may be configured to slide up and down along a slide rail (not shown) on the inner cover 930 so that the engaging portion 993 of the pawl 990 can engage or disengage with the ratchet teeth on the ratchet 944, and the movement of the pawl 990 is a sliding movement.

[0170] The strap adjustment device 900 further includes an elastic member 980, which is configured to bias the pawl 990 toward the locking position, so that the pawl 990 tends to block the ratchet 944 from rotating along the unwinding direction D2. In this embodiment, the elastic member 980 is a torsion spring arranged around the connecting side 991 of the pawl 990, one end 981 of the torsion spring abuts against the inner upper wall of the inner shell 930, and the other end 982 is connected to the protrusion 994 in the middle of the pawl 990. In some other embodiments, the elastic member 980 can be in other forms such as a tension spring, a compression spring, an elastic rope or an elastic body, as long as it can bias the pawl 990 toward the locking position.

[0171] When the user adjusts the backrest assembly 300 of the child carrier 10 to pivot toward the horizontal position, the reel 940 will rotate in the unwinding direction D2. However, the pawl 990 tends to block the ratchet 944 and the reel 940 from rotating in the unwinding direction D2 under the action of the elastic member 980. Therefore, the user needs to first drive the pawl 990 to move it to the unlocking position and keep the pawl 990 in the unlocking position (i.e., so that the strap adjustment device 900 changes from the locked state to the unlocked state and remains in the unlocked state) before pulling the backrest assembly 300 of the child carrier 10 to pivot toward the horizontal position.

[0172] See also Fig.32In this embodiment, the operating mechanism for driving the pawl 990 to place the strap adjusting device 900 in the unlocked state includes a handle 901 and a driving member 902, wherein the first end of the driving member 902 is connected to the free side 992 of the pawl 990, and the second end of the driving member 902 is connected to the handle 901. The first outer cover 910 and the inner cover 930 are respectively provided with a guide hole 911 and a through hole 933 for the driving member 902 to pass through. The position of the guide hole 911 on the first outer cover 910 and the position of the through hole 933 on the inner cover 930 are formed at a position corresponding to the pawl 990, so that the driving member 902 passes through the through hole 933 and / or the guide hole 911 and is connected to the pawl 990. When the handle 901 is pulled by the user, the pulling force is transmitted to the pawl 990 through the driving member 902, so that the pawl 990 moves toward the unlocked position.

[0173] In this embodiment, the backrest assembly 300 can be maintained at any desired position between the upright position and the horizontal position by the cooperation between the pawl 990 and the ratchet 944, and unless the user pulls the handle 901 to place the strap adjustment device 900 in the unlocked state, the backrest assembly 300 cannot be further pivoted toward the horizontal position because the rotation of the ratchet 944 along the unwinding direction D2 is blocked by the pawl 990 (see Fig.37 ), the effective length of the back support of the back support strap 323 cannot be further extended.

[0174] However, when the strap adjusting device 900 is in the locked state, the pawl 990 does not prevent the ratchet 944 from rotating in the winding direction D1. When the ratchet 944 rotates in the winding direction D1, the pawl 990 slides over the back of the teeth of the ratchet 944. Due to the bias of the elastic member 980 on the pawl 990, the rotation of the ratchet 944 in the winding direction D1 will encounter a certain resistance.

[0175] When the child's back is leaning or lying on the backrest of the child carrier 10, and the backrest assembly 300 is in a non-upright position (i.e., a horizontal position, or any position that deviates from the upright position toward the horizontal position), the backrest strap 323 initially wound on the reel 940 is at least partially stretched out of the strap adjustment device 900, and the spring spring 950 positioned in the reel 940 is wound up and elastically deformed. In this embodiment, the spring spring 950 is configured to have an elastic restoring force (also referred to as a rewinding force) greater than the resistance applied by the pawl 990 to the rotation of the ratchet wheel 944 in the winding direction D1. When the child stands up and leaves the child carrier 10, the elastic restoring force of the spring spring 950 drives the reel 940 to rotate along the winding direction D1, so that the backrest strap 323 is rewound on the reel 940, thereby shortening the backrest support effective length of the backrest strap 323. In this way, the backrest assembly 300 can automatically return to the upright position without being pushed by the user, so that the child carrier 10 can be folded more conveniently and with less effort.

[0176] In addition, there may be a situation where the gravity of other components of the child carrier 10 applied to the belt adjustment device 900 is greater than the elastic restoring force of the spring 950. However, even in this case, the user only needs to slightly push the backrest assembly 300 upward to eliminate the influence of the gravity of other components of the child carrier 10 on the belt adjustment device 900, and the elastic restoring force of the spring 950 can drive the reel 940 to rotate along the winding direction D1, so that the backrest assembly 300 automatically returns to the upright position. Therefore, in this case, when the child carrier 10 needs to be folded, even if the child carrier 10 is in a lying state, the user only needs to slightly push the backrest of the child carrier 10 upward once, and the backrest assembly 300 can automatically return to the upright position, which is more labor-saving and convenient to fold.

[0177] It can be understood that the strap adjustment device provided in this embodiment can be applicable to the child carrier in the above-mentioned first to fourth embodiments or other similar embodiments.

[0178] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0179] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A child carrier, characterized in that: include: Frame; a seat assembly mounted to the frame and configured to be movable relative to the frame in a longitudinal direction of the frame; a backrest assembly pivotally connected to the seat assembly; a rider pivotally connected to the frame; as well as A linkage mechanism, which is arranged on one side of the seat assembly and is connected to the backrest assembly and the seat assembly respectively; When the rider pivots relative to the frame, the rider drives the seat assembly to move relative to the frame along the longitudinal direction of the frame, and the seat assembly drives the backrest assembly to move synchronously with the seat assembly along the longitudinal direction of the frame through the linkage mechanism, so that the angle of the backrest assembly relative to the seat assembly remains unchanged.

2. The child carrier according to claim 1, characterized in that: The backrest assembly comprises a backrest tube and a backrest belt, wherein the backrest tube is supported on the backrest belt. The linkage mechanism comprises a linkage rod, a first end of which is connected to the seat assembly, and a second end of which is connected to the armrest of the frame and connected to the end of the backrest strap.

3. The child carrier according to claim 2, characterized in that: The linkage mechanism also includes a fixing plate, which is connected to the second end of the linkage rod through a sliding pin so that the fixing plate moves together with the second end of the linkage rod, and the end of the back strap is connected to the fixing plate.

4. A child carrier, characterized in that: include: Frame, seat assembly and locking mechanism, The frame comprises: forefoot; hind foot; an armrest, which is pivotally connected with the front leg and the rear leg at the same pivot point; and The support member comprises a first support frame and a second support frame pivotally connected to each other, wherein one end of the first support frame away from the second support frame is pivotally connected to the armrest, and one end of the second support frame away from the first support frame is pivotally connected to the rear foot; The locking mechanism comprises: A locking member, which is slidably disposed on the first support frame and is switchable between a locking position and a releasing position; Wherein, the locking element has a locking end, and a locking hole is arranged on the rear foot. When the locking element is located at the locking position, the locking end is suitable for being inserted and matched with the locking hole; when the locking element is located at the releasing position, the locking end is disengaged from the locking hole.

5. The child carrier according to claim 4, characterized in that: The locking mechanism also includes: A fixed seat, which is arranged on the rear foot; Wherein, the locking hole is arranged on the fixing seat.

6. The child carrier according to claim 4, characterized in that: The locking member further comprises a locking end, and the second support frame is provided with an unfolding locking groove. When the frame is in the unfolded state and the locking member is located at the locking position, the locking end is adapted to be inserted into and matched with the unfolded locking groove to limit the folding of the frame; when the locking member is located at the unlocking position, the frame is allowed to switch between the unfolded state and the folded state.

7. The child carrier according to claim 6, characterized in that: The locking member further comprises a locking end, the second support frame is provided with a folding locking groove, the folding locking groove and the unfolding locking groove are respectively arranged on both sides of the pivot axis of the first support frame and the second support frame, When the frame is in the folded state and the locking member is located at the locking position, the locking end is adapted to be inserted and matched with the folded locking slot to limit the unfolding of the frame.

8. The child carrier according to claim 4, characterized in that: The locking member is provided with a pushing portion, and the pushing portion is suitable for being pushed by the unlocking mechanism to drive the locking member to move to the unlocking position.

9. A child carrier, characterized in that: include: Frame; a seat assembly mounted on the frame; a backrest assembly pivotally connected to the seat assembly; A headrest plate pivotally connected to the backrest assembly; as well as A driving member is connected to the vehicle frame and is configured to drive the headrest board to change the angle of the headrest board relative to the backrest assembly when the angle of the backrest assembly relative to the seat assembly changes.

10. The child carrier according to claim 9, characterized in that: The child carrier further comprises: A linkage mechanism, which is arranged on one side of the seat assembly and is connected to the backrest assembly and the seat assembly respectively; wherein the seat assembly is configured to be movable relative to the vehicle frame along a longitudinal direction of the vehicle frame; Wherein, when the rider pivots relative to the frame, the rider drives the seat assembly to move relative to the frame along the longitudinal direction of the frame, and the seat assembly drives the backrest assembly to move synchronously with the seat assembly along the longitudinal direction of the frame through the linkage mechanism, so that the angle of the backrest assembly relative to the seat assembly remains unchanged; Wherein, the connecting section of the driving member connected to the frame moves synchronously with the seat assembly along the longitudinal direction of the frame.

Images