Linked foldable mechanism and children's carrier

Abstract

To provide a linked foldable mechanism and a children's carrier with a simple structure that does not easily cause a pinching phenomenon.SOLUTION: Provided are a linked foldable mechanism and a children's carrier. The linked foldable mechanism includes a first rod, a second rod 20, a driving member 200, and a driven member 300. The driving member is fixed to the first rod and includes a first gear tooth part 210. The driven member is fixed to the second rod and includes a second gear tooth part 310. The first gear tooth part meshes with the second gear tooth part. The linked foldable mechanism and the children's carrier have a simple structure and do not easily cause a pinching phenomenon.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] FIELD OF THE INVENTION This application relates to the technical field of child carriers, and more particularly to link-type folding mechanisms and child carriers. [Background technology]

[0002] Child carriers, such as strollers, have become an essential means of transportation for children and can greatly improve the convenience of children's transportation. Strollers generally include a backrest to support a child's back. To reduce packaging and storage volume, the backrest can generally be folded simultaneously when the stroller frame is folded. However, the linked folding of the backrest is generally achieved by a linkage structure. This makes the linkage structure more complex, making it more likely for pinching to occur, which can cause injuries to children and parents. Summary of the Invention

[0003] Therefore, it is necessary to provide a link type folding mechanism and a child carrier that has a simple structure and does not easily cause pinching.

[0004] In one aspect of the present application, a link-type folding mechanism is provided. The link-type folding mechanism includes a first rod, a second rod, a drive member, and a driven member. The drive member is fixed to the first rod. The drive member includes a first gear tooth portion. The driven member is fixed to the second rod. The driven member includes a second gear tooth portion. The first gear tooth portion is meshed with the second gear tooth portion.

[0005] In one embodiment, the drive member is fixed to the end of a first rod, and the driven member is fixed to the end of a second rod.

[0006] In one embodiment, the link-type folding mechanism further includes a gear housing. The gear housing is rotatably connected to the first rod and covers the outside of the first gear teeth portion. The gear housing includes a meshing opening facing the second gear teeth portion. The second gear teeth portion meshes with the first gear teeth portion through the meshing opening.

[0007] In one embodiment, the gear housing further includes a meshing hole. The drive member is fixed to an end of the first rod. The drive member and a portion of the first rod extend into the gear housing through the meshing hole. A wall of the meshing hole has a first side surface and a second side surface facing each other. When the first rod is rotated to abut against the first side surface, the included angle between the first rod and the second rod is minimum, and when the first rod is rotated to abut against the second side surface, the included angle between the first rod and the second rod is maximum.

[0008] In one embodiment, the gear housing includes a housing body and a housing cover, the housing cover being removably covered on a side of the housing body facing the second gear teeth, and a mating opening being defined in the housing cover.

[0009] In another aspect of the present application, a child carrier is provided, the child carrier comprising: a frame support structure including a back support rod and a seat support rod; a drive member fixed to the seat support rod and including a first gear tooth portion; a driven member fixed to the backrest support rod and including a second gear tooth portion; Including, The first gear teeth are meshed with the second gear teeth.

[0010] In one embodiment, the frame support structure further includes a handle assembly including a first handle support rod, a second handle support rod, an operating member, and a locking mechanism. The first handle support rod is pivotally connected to the second handle support rod by the locking mechanism. The operating member is configured to control the locking mechanism to switch between a locked state and an unlocked state so that the first handle support rod and the second handle support rod are switched between a relatively fixed state and a relatively rotatable state.

[0011] In one embodiment, the frame support structure further includes a first linkage, and the second handle support rod and the seat support rod are pivotally connected to the first linkage at different locations.

[0012] In one embodiment, the child carrier further includes a gear housing. The gear housing is pivotally connected to the seat support rod and covers the outside of the first gear teeth. The gear housing includes a meshing opening facing the second gear teeth. The second gear teeth mesh with the first gear teeth through the meshing opening. The first linkage has an L-shaped structure. An apex of the L-shaped structure is fixed to the gear housing. One end of the L-shaped structure remote from the apex is pivotally connected to the seat support rod, and the other end of the L-shaped structure remote from the apex is pivotally connected to the second handle support rod.

[0013] In one embodiment, the frame support structure further includes a rear leg support rod and a second linkage, one end of the second linkage pivotally connected to the seat support rod and the other end of the second linkage pivotally connected to the rear leg support rod and the second handle support rod.

[0014] In one embodiment, the frame support structure further includes a front leg assembly, the front leg assembly being pivotally connected to the seat support rod.

[0015] In one embodiment, the front leg assembly includes a first front leg support rod, a front leg connecting member, and a second front leg support rod, which are pivotally connected in sequence. The end of the first front leg support rod remote from the front leg connecting member is pivotally connected to the first handle support rod. The front leg connecting member is fixedly connected to the rear leg support rod at an included angle. The second front leg support rod is pivotally connected to the seat support rod.

[0016] In one embodiment, the child carrier further includes a seat plate, which is secured to the seat support rod.

[0017] In one embodiment, there are two frame support structures. The seat support rods of the two frame support structures are fixed to both the left and right sides of the seat plate, respectively. There are two driving members and two driven members. The two driving members and the two driven members are configured to achieve linked folding between the seat support rods and the back support rods of the two frame support structures, respectively.

[0018] In one embodiment, the child carrier further includes an extension plate, the front side of which is pivotally connected to the rear side of the seat plate, and the two ends of the rear side of the extension plate are respectively fixed to the back support rods of the two frame support structures.

[0019] In one embodiment, the child carrier further includes a backrest adjustment structure. The backrest adjustment structure includes an adjustment member, a rotating base, a drive block, a gear, and a resilient member. The driven member is provided with a first gear groove that meshes with the gear. The driven member, gear, and rotating base are coaxially rotatably connected. The backrest support rod is fixed to the rotating base. The drive block is drivingly connected to the gear. The resilient member is connected between the driven member and the gear. The adjustment member is configured to drive the drive block to push the gear out of the first gear groove.

[0020] In the above-described link-type folding mechanism and child carrier, the first rod and the second rod are folded in a linked manner via the first gear teeth of the driving member and the second gear teeth of the driven member. In this way, when the first rod is rotated, the second rod can be driven to rotate by a corresponding angle, thereby realizing the link-type folding function. For example, if the first rod is a seat support rod and the second rod is a backrest support rod, the backrest support rod can be rotated and folded when the backrest support rod is rotated and folded. The link-type folding mechanism has a simple structure and can replace a conventional linkage structure through the cooperation of the two gear teeth. Furthermore, the link-type folding mechanism is less likely to cause pinching and has a high safety factor. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of a child carrier according to one embodiment of the present application; [Figure 2] FIG. 2 is an enlarged view of part A in FIG. [Figure 3] 2 is a schematic view of the child carrier shown in FIG. 1 from another perspective. [Figure 4] FIG. 4 is an enlarged view of part B in FIG. [Figure 5] 2 is a schematic diagram of the child carrier shown in FIG. 1, with the seat plate and armrests omitted. [Figure 6] FIG. 6 is an enlarged view of part C in FIG. 5. [Figure 7] 6 is a side cross-sectional view of the child carrier shown in FIG. 5, with the child carrier in a deployed position. [Figure 8] FIG. 8 is an enlarged view of part D in FIG. 7. [Figure 9] 6 is a side cross-sectional view of the child carrier shown in FIG. 5, with the child carrier in a transition position between the unfolded and folded positions. [Figure 10] FIG. 10 is an enlarged view of part E in FIG. 9. [Figure 11]6 is a side cross-sectional view of the child carrier shown in FIG. 5, with the child carrier in a folded position. [Figure 12] FIG. 12 is an enlarged view of part F in FIG. [Figure 13] FIG. 4 is a partially enlarged view of FIG. [Figure 14] 1 is a schematic view of a child carrier according to another embodiment of the present application, the child carrier being in a deployed position. [Figure 15] 15 is a schematic view of the child carrier shown in FIG. 14 from another perspective, with the child carrier in a folded position. [Figure 16] FIG. 15 is a partially exploded view of the child carrier shown in FIG. 14. [Figure 17] FIG. 17 is a schematic diagram of FIG. 16. DETAILED DESCRIPTION OF THE INVENTION

[0022] As shown in Figures 1, 7, and 8, one embodiment of the present application provides a child carrier such as a stroller. The child carrier includes a frame support structure 100, a driving member 200, a driven member 300, a gear housing 400, and a seat plate 500. The child carrier has a simple structure, is not easily pinched when folded, and has a high safety factor.

[0023] Specifically, as shown in Figures 1 and 2, the frame support structure 100 includes a handle assembly 110, a seat support rod 120, a rear leg support rod 130, a front leg assembly 140, a backrest support rod 150, a first linkage 160, a second linkage 170, a backrest adjustment structure 180, and armrests 190.

[0024] The handle assembly 110 includes a first handle support rod 111, a second handle support rod 112, an operating member 113, and a locking mechanism 114. The first handle support rod 111 is pivotally connected to the second handle support rod 112 by the locking mechanism 114. The operating member 113 controls the locking mechanism 114 to switch between a locked state and an unlocked state so that the first handle support rod 111 and the second handle support rod 112 can be switched between a relatively fixed state and a relatively rotatable state. In this embodiment, when the stroller is in the unfolded position (i.e., fully unfolded and ready for use), the first handle support rod 111 is positioned above the second handle support rod 112.

[0025] 3 and 4, the second handle support rod 112 and the seat support rod 120 are each pivotally connected to a first linkage 160 at different positions. The first linkage 160 can be used to achieve linkage and folding between the second handle support rod 112 and the seat support rod 120. That is, when the second handle support rod 112 is rotated, the seat support rod 120 is rotated accordingly.

[0026] 4 and 13, the first linkage 160 is a steel sheet having a generally L-shaped structure. The apex of the L-shaped structure is fixed to the gear housing 400. One end of the L-shaped structure remote from the apex is pivotally connected to the seat support rod 120, and the other end of the L-shaped structure remote from the apex is pivotally connected to the second handle support rod 112. Of course, in other embodiments, the first linkage 160 may be other shapes or made of other materials.

[0027] 4, the second linkage 170 is an iron sheet having a generally band-like structure. One end of the second linkage 170 is rotatably connected to the seat support rod 120, and the other end of the second linkage 170 is rotatably connected to the rear leg support rod 130 and the second handle support rod 112. The second linkage 170 can be used to realize the linkage and folding between the seat support rod 120 and the rear leg support rod 130. When the seat support rod 120 is rotated, the rear leg support rod 130 is rotated accordingly.

[0028] Specifically, as shown in FIG. 1 , the front leg assembly 140 is rotatably connected to the seat support rod 120. The front leg assembly 140 includes a first front leg support rod 141, a front leg connecting member 142, and a second front leg support rod 143, which are rotatably connected in sequence. In this embodiment, when the stroller is in the unfolded position, the first front leg support rod 141, the front leg connecting member 142, and the second front leg support rod 143 are tilted sequentially from top to bottom. One end of the first front leg support rod 141 remote from the front leg connecting member 142 is rotatably connected to the first handle support rod 111. The pivot point between the first front leg support rod 141 and the first handle support rod 111 is located on the side of the locking mechanism 114 remote from the second handle support rod 112. In other words, the pivot point between the first front leg support rod 141 and the first handle support rod 111 is spaced apart from the locking mechanism 114. The front leg connecting member 142 is connected and fixed to the rear leg support rod 130 at a narrow angle. The second front leg support rod 143 is rotatably connected to the seat support rod 120. In this manner, as shown in FIGS. 7 to 12 , when the operating member 113 is operated, the locking mechanism 114 between the first handle support rod 111 and the second handle support rod 112 is released and the first handle support rod 111 is rotated, for example, counterclockwise relative to the locking mechanism 114. In this case, the first front leg support rod 141 is rotated clockwise relative to the front leg connecting member 142 under the drive of the first handle support rod 111. At the same time, the second handle support rod 112 is rotated clockwise relative to the locking mechanism 114 and drives the seat support rod 120 to rotate counterclockwise relative to the first linkage 160 via the first linkage 160. At the same time, the seat support rod 120 drives the second front leg support rod 143 to rotate counterclockwise relative to the front leg connecting member 142. At the same time, the seat support rod 120 drives the rear leg support rod 130, via the second linkage 170, to rotate clockwise relative to the second linkage 170.Because the rear leg support rod 130 is fixed to the front leg connecting member 142, the front leg assembly 140 can be folded into three parts, with the first front leg support rod 141, the rear leg support rod 130, and the second front leg support rod 143 folding towards each other, thereby significantly reducing the overall volume of the stroller after folding.

[0029] 10, 12, and 14, the driving member 200 is fixed to the seat support rod 120. The driving member 200 includes a first gear tooth portion 210. The driven member 300 is fixed to the backrest support rod 150. The driven member 300 includes a second gear tooth portion 310. The first gear tooth portion 210 meshes with the second gear tooth portion 310. In this embodiment, the driving member 200 has a substantially quarter-gear shape, and the central angle of the first gear tooth portion 210 is approximately 90 degrees. The driven member 300 includes a disk-shaped fixed base 320 and a 1 / 3 gear-shaped driven body 330. The fixed base 320 is fixed to the backrest support rod 150. Specifically, the fixed base 320 is snap-connected to the backrest support rod 150 via the rotating base 182. The driven body 330 is fixed to the fixed base 320. In this embodiment, the driven body 330 and the fixed base 320 are integrally formed. Of course, in other embodiments, the driven body 330 and the fixed base 320 may be two separate components that can be assembled together. The second gear teeth portion 310 is disposed on the driven body 330. Of course, the shapes of the driving member 200 and the driven member 300 are not limited to this, and the central angles of the first gear teeth portion 210 and the second gear teeth portion 310 can be adjusted according to actual needs. This allows the seat support rod 120 and the backrest support rod 150 to be folded in a linked manner via the first gear teeth portion 210 on the driving member 200 side and the second gear teeth portion 310 on the driven member 300 side. Specifically, in the folding process, when the seat support rod 120 is driven by the first linkage 160 to rotate counterclockwise relative to the first linkage 160, the backrest support rod 150 is rotated clockwise relative to the drive member 200, causing the seat support rod 120 and the backrest support rod 150 to move closer to each other and thereby fold. The cooperation of the two gear teeth can replace the conventional linkage structure, and such a structure is simple, does not easily cause pinching, and has a higher safety factor.

[0030] Furthermore, a driving member 200 is fixed to the end of the seat support rod 120, and a driven member 300 is fixed to the end of the back support rod 150. In this way, on the one hand, manufacturing and processing can be facilitated, and on the other hand, the torque of the seat support rod 120 during the link-type rotation process can be increased, so that only a slight force applied to the seat support rod 120 will drive the back support rod 150 to rotate.

[0031] 8 and 13, the gear housing 400 is rotatably connected to the seat support rod 120 and covers the outside of the first gear tooth portion 210. The gear housing 400 includes a meshing opening 411. The meshing opening 411 faces the second gear tooth portion 310. The second gear tooth portion 310 meshes with the first gear tooth portion 210 through the meshing opening 411. The gear housing 400 covers the first gear tooth portion 210 and the second gear tooth portion 310, thereby preventing a user from being scratched by the first gear tooth portion 210 and the second gear tooth portion 310 and improving safety.

[0032] Optionally, as shown in FIGS. 4 and 8 , the gear housing 400 further includes a meshing hole 412. The drive member 200 is fixed to an end of the seat support rod 120, and the drive member 200 and a portion of the seat support rod 120 extend into the gear housing 400 through the meshing hole 412. The hole wall of the meshing hole 412 has a first side and a second side facing each other. When the seat support rod 120 is rotated to abut against the first side, the angle between the seat support rod 120 and the backrest support rod 150 is smallest, and the stroller is in the unfolded position. When the seat support rod 120 is rotated to abut against the second side, the angle between the seat support rod 120 and the backrest support rod 150 is largest, and the stroller is in the folded position. This allows the rotation angle of the seat support rod 120 to be limited.

[0033] Optionally, as shown in Figures 6 and 13, the gear housing 400 includes a housing body 450 and a housing cover 460. The housing cover 460 is removably covered on a side surface of the housing body 450, for example, on a side of the housing body 450 facing the second gear tooth portion 310. The meshing opening 411 is defined in the housing cover 460, which allows for easy removal and replacement of the driving member 200. In this embodiment, the driven body 330 is disposed in the housing body 450, the fixed base 320 covers a portion of the side surface of the housing body 450, and the housing cover 460 covers another portion of the side surface of the housing body 450.

[0034] 1 to 4, the seat plate 500 is fixed to the seat support rod 120. In this embodiment, there are two frame support structures 100. The seat support rods 120 of the two frame support structures 100 are fixed to both the left and right sides of the seat plate 500, respectively. There are two driving members 200 and two driven members 300. The two driving members 200 and the two driven members 300 are used to realize linked folding between the seat support rods 120 and the backrest support rods 150 of the two frame support structures 100, respectively.

[0035] Specifically, as shown in Figures 16 and 17, the backrest adjustment structure 180 includes an adjustment member 181, a rotating base 182, a driving block 183, a gear 184, and an elastic member 185. The driven member 300 is provided with a first gear groove 340 that meshes with the gear 184, and the rotating base 182 is provided with a second gear groove that meshes with the gear 184. In this embodiment, the first gear groove 340 that meshes with the gear 184 is provided in a fixed base 320 of the driven member 300. The driven member 300, the gear 184, and the rotating base 182 are connected to be rotatable coaxially. The backrest support rod 150 is fixed to the rotating base 182. The driving block 183 is connected to the gear 184 to be drivably driven. The elastic member 185 is connected between the driven member 300 and the gear 184. The adjustment member 181 is used to drive the drive block 183 to push the gear 184 out of the first gear groove 340. In this embodiment, the adjustment member 181 is an adjustment iron wire. In this manner, when it is necessary to adjust the angle of the backrest support rod 150 relative to the seat plate 500, the adjustment member 181 is pulled to drive the drive block 183 and push the gear 184 out of the first gear groove 340, thereby releasing the engagement lock between the backrest support rod 150 and the driven member 300 and allowing the angle of the backrest support rod 150 to be adjusted. The elastic member 185 can reset the engagement lock of the gear 184 in the fixed base 320.

[0036] The armrest 190 is a U-shaped rod. The two ends of the armrest 190 are detachably connected to the front leg connecting members 142 of the two frame support structures 100, respectively.

[0037] 14 and 15, the child carrier further includes an extension plate 600. The front side of the extension plate 600 is rotatably connected to the rear side of the seat plate 500. The two rear ends of the extension plate 600 are respectively fixed to the backrest support rods 150 of the two frame support structures 100. The extension plate 600 can be joined with the seat plate 500 to form a wider and more comfortable seating space. Moreover, the extension plate 600 and the seat plate 500 are rotatably connected to each other, and the extension plate 600 is fixed to the backrest support rods 150. Therefore, during the folding process, the backrest support rods 150 can drive the extension plate 600 to fold relative to the seat plate 500, thereby further reducing the volume of the child carrier after folding.

[0038] Another embodiment of the present application provides a link-type folding mechanism applicable to child carriers such as strollers, etc. The link-type folding mechanism has a simple structure, is not easily susceptible to pinching, and has a high safety factor.

[0039] Specifically, as shown in Figures 8, 10, and 12, the link-type folding mechanism includes a first rod 10, a second rod 20, a driving member 200, a driven member 300, and a gear housing 400.

[0040] The driving member 200 is fixed to the first rod 10. The driving member 200 includes a first gear tooth portion 210. The driven member 300 is fixed to the second rod 20. The driven member 300 includes a second gear tooth portion 310. The first gear tooth portion 210 is meshed with the second gear tooth portion 310. The first rod 10 may be, for example, the seat support rod 120 of the stroller. The second rod 20 may be, for example, the back support rod 150 of the stroller. Of course, in other embodiments, the first rod 10 and the second rod 20 may be other components within the stroller that need to have a linked folding function. For example, the first rod 10 may be the handle assembly 110 of the stroller, and the second rod 20 may be, but is not limited to, the seat support rod 120 of the stroller. In this embodiment, the driving member 200 has a generally quarter-gear shape, and the central angle of the first gear tooth portion 210 is approximately 90 degrees. The driven member 300 includes a disk-shaped fixed base 320 and a 1 / 3 gear-shaped driven body 330. The fixed base 320 is fixed to the second rod 20, and the driven body 330 is fixed to the fixed base 320. In this embodiment, the driven body 330 and the fixed base 320 are integrally formed. Of course, in other embodiments, the driven body 330 and the fixed base 320 may be two separate components that can be assembled together. The second gear tooth portion 310 is disposed on the driven body 330. The central angles of the first gear tooth portion 210 and the second gear tooth portion 310 can be set to limit the included angle between the first rod 10 and the second rod 20 within a certain range. Of course, the shapes of the driving member 200 and the driven member 300 are not limited to these, and the central angles of the first gear tooth portion 210 and the second gear tooth portion 310 can be adjusted according to actual needs. In this way, the first rod 10 and the second rod 20 can be folded in a linked manner via the first gear tooth portion 210 on the driving member 200 side and the second gear tooth portion 310 on the driven member 300 side. The cooperation of the two gear tooth portions can replace the conventional linkage structure, and such a structure is simple, does not easily cause pinching, and has a higher safety factor.

[0041] Also, the driving member 200 is fixed to the end of the first rod 10, and the driven member 300 is fixed to the end of the second rod 20. In this way, on the one hand, it is possible to facilitate the manufacture and processing of the link type folding mechanism, and on the other hand, it is possible to increase the torque of the first rod 10 during the link type rotation process, so that the second rod 20 can be rotationally driven by only applying a small force to the first rod 10.

[0042] 8 and 13, the link-type folding mechanism further includes a gear housing 400. The gear housing 400 is rotatably connected to the first rod 10 and covers the outside of the first gear tooth portion 210. The gear housing 400 includes a meshing opening 411. The meshing opening 411 faces the second gear tooth portion 310. The second gear tooth portion 310 meshes with the first gear tooth portion 210 through the meshing opening 411. Covering the first gear tooth portion 210 and the second gear tooth portion 310 with the gear housing 400 can prevent a user from being scratched by the first gear tooth portion 210 and the second gear tooth portion 310, thereby improving the safety of the link-type folding mechanism.

[0043] Optionally, as shown in FIGS. 4 and 8 , the gear housing 400 further includes a meshing hole 412. The drive member 200 is fixed to the end of the first rod 10. The drive member 200 and a portion of the first rod 10 extend into the gear housing 400 through the meshing hole 412. The hole wall of the meshing hole 412 has a first side surface and a second side surface facing each other. When the first rod 10 is rotated and abuts against the first side surface, the angle between the first rod 10 and the second rod 20 is smallest, and the link-type folding mechanism is in the unfolded position. When the first rod 10 is rotated and abuts against the second side surface, the angle between the first rod 10 and the second rod 20 is largest, and the link-type folding mechanism is in the folded position. In this way, the rotation angle of the first rod 10 can be limited.

[0044] Optionally, as shown in Figures 6 and 13, the gear housing 400 includes a housing body 450 and a housing cover 460. The housing cover 460 is removably covered on a side surface of the housing body 450, for example, on a side of the housing body 450 facing the second gear tooth portion 310. The meshing opening 411 is defined in the housing cover 460, which allows for easy removal and replacement of the driving member 200. In this embodiment, the driven body 330 is disposed in the housing body 450, the fixed base 320 covers a portion of the side surface of the housing body 450, and the housing cover 460 covers another portion of the side surface of the housing body 450.

[0045] The above-described link type folding mechanism and child carrier have at least the following advantages.

[0046] The first rod 10 and the second rod 20 are folded in a linked manner via the first gear teeth 210 on the driving member 200 and the second gear teeth 310 on the driven member 300. In this way, when the first rod 10 is rotated, the second rod 20 can be rotated by a corresponding angle, thereby realizing a linked folding function. For example, if the first rod 10 is the seat support rod 120 and the second rod 20 is the backrest support rod 150, when the seat support rod 120 is rotated and folded, the backrest support rod 150 can be rotated and folded. The linked folding mechanism has a simple structure and can replace a conventional linkage structure through the cooperation of the two gear teeth. Furthermore, the linked folding mechanism is less likely to cause pinching and has a high safety factor.

[0047] The technical features of the above-described embodiments can be combined in any manner. For simplicity, not all possible combinations of the technical features in the above-described embodiments are described. However, all combinations of these technical features are within the scope of the present application, provided they are not mutually inconsistent.

[0048] The above embodiments merely illustrate some embodiments of the present application, and the descriptions are relatively specific and detailed. However, they should not be understood as limitations on the patent scope of the present application. It should be noted that those skilled in the art can still make some modifications and improvements without departing from the concept of the present application, and the modifications and improvements will fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the appended claims. [Explanation of symbols]

[0049] 100 Frame support structure 110 Handle assembly 111 first handle support rod 112 second handle support rod 113 Operating member 114 Locking mechanism 120 Seat support rod 130 Rear leg support rod 140 Nose landing gear assembly 141 No. 1 nose landing gear support rod 142 nose landing gear connecting member 143 Second nose landing gear support rod 150 Backrest support rod 160 First Linkage 170 Second Linkage 180 Backrest adjustment structure 181 Adjustment member 182 Rotating Base 183 Driving Block 184 gears 185 Elastic Members 190 armrest 200 Driving member 210 first gear tooth portion 300 Driven member 310 Second gear tooth portion 320 Fixed Base 330 Driven body 340 First gear groove 400 gear housing 411 Occlusion opening 412 Engagement hole 450 housing body 460 Housing Cover 500 seat plate 600 Extension Plate 10 First Rod 20 Second Rod

Claims

1. The device comprises a first rod (10), a second rod (20), a driving member (200), and a driven member (300), A link-type folding mechanism, wherein the driving member (200) is fixed to the first rod (10), the driving member (200) has a first gear tooth portion (210), the driven member (300) is fixed to the second rod (20), the driven member (300) has a second gear tooth portion (310), and the first gear tooth portion (210) is meshed with the second gear tooth portion (310).

2. 2. The link-type folding mechanism according to claim 1, wherein the driving member (200) is fixed to an end of the first rod (10), and the driven member (300) is fixed to an end of the second rod (20).

3. Further comprising a gear housing (400); The link-type folding mechanism of claim 1 or 2, wherein the gear housing (400) is rotatably connected to the first rod (10) and covers the outside of the first gear tooth portion (210), the gear housing (400) has a meshing opening (411) facing the second gear tooth portion (310), and the second gear tooth portion (310) meshes with the first gear tooth portion (210) through the meshing opening (411).

4. 4. The link-type folding mechanism of claim 3, wherein the gear housing (400) further comprises an interlocking hole (412), the drive member (200) is fixed to an end of the first rod (10), portions of the drive member (200) and the first rod (10) extend into the gear housing (400) through the interlocking hole (412), the hole wall of the interlocking hole (412) has a first side surface and a second side surface facing each other, and when the first rod (10) is rotated and abuts against the first side surface, the included angle between the first rod (10) and the second rod (20) is smallest, and when the first rod (10) is rotated and abuts against the second side surface, the included angle between the first rod (10) and the second rod (20) is largest.

5. 5. The link-type folding mechanism of claim 3 or 4, wherein the gear housing (400) comprises a housing body (450) and a housing cover (460), the housing cover (460) being removably covered on a side of the housing body (450) facing the second gear tooth portion (310), and the meshing opening (411) being defined in the housing cover (460).

6. a frame support structure (100) comprising back support rods (150) and seat support rods (120); a drive member (200) fixed to the seat support rod (120) and having a first gear tooth portion (210); a driven member (300) fixed to the backrest support rod (150) and having a second gear tooth portion (310); Equipped with A child carrier, wherein the first gear teeth (210) are meshed with the second gear teeth (310).

7. 7. The child carrier of claim 6, wherein the frame support structure (100) further comprises a handle assembly (110), the handle assembly (110) comprising a first handle support rod (111), a second handle support rod (112), an operating member (113), and a locking mechanism (114), the first handle support rod (111) being rotatably connected to the second handle support rod (112) by the locking mechanism (114), and the operating member (113) is configured to control the locking mechanism (114) to switch between a locked state and an unlocked state so that the first handle support rod (111) and the second handle support rod (112) are switched between a relatively fixed state and a relatively rotatable state.

8. 8. The child carrier of claim 7, wherein the frame support structure (100) further comprises a first linkage (160), and the second handle support rod (112) and the seat support rod (120) are pivotally connected to the first linkage (160) at different positions.

9. Further comprising a gear housing (400); The gear housing (400) is rotatably connected to the seat support rod (120) and covers the outside of the first gear tooth portion (210). The gear housing (400) has a meshing opening (411) facing the second gear tooth portion (310). The second gear tooth portion (310) meshes with the first gear tooth portion (210) through the meshing opening (411).

9. The child carrier of claim 8, wherein the first linkage (160) has an L-shaped structure, an apex of the L-shaped structure fixed to the gear housing (400), one end of the L-shaped structure remote from the apex pivotally connected to the seat support rod (120), and the other end of the L-shaped structure remote from the apex pivotally connected to the second handle support rod (112).

10. 10. A child carrier as described in any one of claims 7 to 9, wherein the frame support structure (100) further comprises a rear leg support rod (130) and a second linkage (170), one end of the second linkage (170) being pivotally connected to the seat support rod (120), and the other end of the second linkage (170) being pivotally connected to the rear leg support rod (130) and the second handle support rod (112).

11. 11. The child carrier of any one of claims 6 to 10, wherein the frame support structure (100) further comprises a front leg assembly (140), the front leg assembly (140) pivotally connected to the seat support rod (120).

12. 12. A child carrier as described in claim 11 in combination with claim 10, wherein the front leg assembly (140) comprises a first front leg support rod (141), a front leg connecting member (142), and a second front leg support rod (143), which are rotatably connected in sequence, wherein an end of the first front leg support rod (141) remote from the front leg connecting member (142) is rotatably connected to the first handle support rod (111), the front leg connecting member (142) is fixedly connected to the rear leg support rod (130) at an included angle, and the second front leg support rod (143) is rotatably connected to the seat support rod (120).

13. 13. The child carrier of any one of claims 6 to 12, further comprising a seat plate (500), said seat plate (500) being fixed to said seat support rod (120).

14. 14. The child carrier of claim 13, wherein the child carrier comprises two frame support structures (100), the seat support rods (120) of the two frame support structures (100) being fixed to the left and right sides of the seat plate (500), respectively, and two driving members (200) and two driven members (300), each configured to achieve linked folding between the seat support rods (120) and the backrest support rods (150) of the two frame support structures (100).

15. 15. The child carrier of claim 14, further comprising an extension plate (600), the front side of which is pivotally connected to the rear side of the seat plate (500), and the two rear ends of which are fixed to the backrest support rods (150) of the two frame support structures (100), respectively.

16. Further comprising a backrest adjustment structure (180); The backrest adjustment structure (180) comprises an adjustment member (181), a rotation base (182), a drive block (183), a gear (184), and an elastic member (185). The driven member (300) is provided with a first gear groove (340) that meshes with the gear (184). The driven member (300), the gear (184), and the rotation base (182) are coaxially connected to each other so as to be rotatable. The backrest support rod (15) is connected to the drive block (300).

16. The child carrier of claim 6, wherein a driving block (183) is fixed to the pivot base (182), the driving block (183) is drivingly connected to the gear (184), the elastic member (185) is connected between the driven member (300) and the gear (184), and an adjustment member (181) is configured to drive the driving block (183) to push the gear (184) out of the first gear groove (340).

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