Child carrier

Abstract

This invention relates to a linkage folding mechanism and a child carrier. The linkage folding mechanism includes a first rod, a second rod, a driving member, and a driven member. The driving member is fixed to the first rod and has a first gear tooth. The driven member is fixed to the second rod and has a second gear tooth. The first gear tooth meshes with the second gear tooth. This linkage folding mechanism and child carrier have a simple structure and are less prone to trapping.

Description

[Technical Field]

[0001] This invention relates to the technical field of children's vehicles, and in particular to a linkage folding mechanism and a children's vehicle. [Previous Technology]

[0002] Children's vehicles, such as strollers, have become indispensable tools for children's travel, greatly improving their convenience. Strollers generally include a backrest to support the child's back. To reduce packaging and storage volume, the stroller frame usually folds down in tandem with the backrest. However, the linked folding mechanism of the backrest is often a complex linkage structure, which can easily cause it to get stuck, leading to injury to the child or parent. [Summary of the Invention]

[0003] Based on this, it is necessary to provide a linkage folding mechanism and a child carrier, wherein the linkage folding mechanism and the child carrier have a simple structure and are not prone to trapping.

[0004] In one aspect, the present invention provides a child vehicle, comprising: a frame support structure including a seat support rod and a rider assembly; a drive member fixed to the rider assembly, the drive member having a first toothed portion; and a driven member fixed to the seat support rod, the driven member having a second toothed portion, the first toothed portion engaging with the second toothed portion.

[0005] In one embodiment, the rider assembly includes a first rider support bar, a second rider support bar, an operating element, and a locking mechanism. The locking mechanism is configured to lock and unlock such that the first rider support bar and the second rider support bar switch between a relatively fixed state and a relatively rotating state. The operating element is used to control the locking mechanism to switch between the locked and unlocked states.

[0006] In one embodiment, the rider assembly includes a first rider support rod and a second rider support rod, and the frame support structure further includes a first linkage member, wherein the second rider support rod and the seat support rod are pivotally connected to the first linkage member at different positions.

[0007] In one embodiment, the rider assembly includes a first rider support rod and a second rider support rod, and the frame support structure further includes a rear foot support rod and a second linkage, one end of the second linkage being pivotally connected to the seat support rod and the other end being pivotally connected to the rear foot support rod and the second rider support rod.

[0008] In one embodiment, the child vehicle further includes a toothed housing pivotally connected to the seat support rod, the toothed housing having an engagement port through which the second toothed portion passes and engages with the first toothed portion.

[0009] In one embodiment, the gear housing also has a meshing hole, the drive member is fixed to one end of the rider assembly, and the drive member and a portion of the rider assembly extend into the gear housing through the meshing hole.

[0010] In one embodiment, the frame support structure further includes a front foot assembly, which is pivotally connected to the seat support rod.

[0011] In one embodiment, the front foot assembly includes a first front foot support rod, a front foot connector, and a second front foot support rod that are pivotally connected in sequence. The end of the first front foot support rod away from the front foot connector is pivotally connected to the first rider support rod. The front foot connector is fixedly connected to the rear foot support rod at an included angle. The second front foot support rod is pivotally connected to the seat support rod.

[0012] In one embodiment, the front foot assembly is divided into three folding sections. When the operating element is operated, the locking mechanism is unlocked, and the first front foot support rod, the rear foot support rod, and the second front foot support rod fold towards each other.

[0013] In one embodiment, when the operating member is operated, the locking mechanism is unlocked, the first rider support rod rotates counterclockwise relative to the locking mechanism, and the first front foot support rod rotates clockwise relative to the front foot connector under the drive of the first rider support rod; the second rider support rod rotates clockwise relative to the locking mechanism, and drives the second front foot support rod to rotate counterclockwise relative to the front foot connector through the seat support rod.

[0014] In one embodiment, the child vehicle further includes a seat plate fixed to the seat support rod.

[0015] In one embodiment, there are two frame support structures, and the seat support rods of the two frame support structures are respectively fixed to the left and right sides of the seat plate. There are also two driving members and two driven members, which are used to realize the linkage and folding between the seat support rods of the two frame support structures and the rider assembly.

[0016] In one embodiment, the child vehicle further includes an extension plate, and the frame support structure further includes two back support rods. The front side of the extension plate 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 two back support rods. During the folding process of the back support rods, the back support rods can drive the extension plate to fold relative to the seat plate.

[0017] In one aspect, the present invention provides a linkage folding mechanism, which includes a first rod, a second rod, a driving member and a driven member. The driving member is fixed to the first rod and has a first gear tooth. The driven member is fixed to the second rod and has a second gear tooth. The first gear tooth meshes with the second gear tooth.

[0018] In one embodiment, the driving member is fixed to one end of the first rod, and the driven member is fixed to one end of the second rod.

[0019] In one embodiment, the linkage folding mechanism further includes a gear housing, which is pivotally connected to the first rod and covers the first gear portion. The gear housing has a meshing opening facing the second gear portion, through which the second gear portion meshes with the first gear portion.

[0020] In one embodiment, the gear housing further has a meshing hole, the drive member is fixed to one end of the first rod, the drive member and part of the first rod extend into the gear housing through the meshing hole, the hole wall of the meshing hole has a first side and a second side opposite to each other, when the first rod rotates to abut against the first side, the included angle between the first rod and the second rod is the smallest, when the first rod rotates to abut against the second side, the included angle between the first rod and the second rod is the largest.

[0021] In one embodiment, the gear tooth housing includes a housing body and a housing cover, the housing cover being detachably disposed on the side of the housing body facing the second gear tooth, and the meshing opening being formed on the housing cover.

[0022] In another aspect, the present invention provides a child vehicle, comprising: a frame support structure including a back support rod and a seat support rod; a drive member fixed to the seat support rod, the drive member having a first toothed portion; and a driven member fixed to the back support rod, the driven member having a second toothed portion, the first toothed portion engaging with the second toothed portion.

[0023] In one embodiment, the frame support structure further includes a rider assembly, which includes a first rider support rod, a second rider support rod, an operating element, and a locking mechanism. The first rider support rod and the second rider support rod are pivotally connected through the locking mechanism. The operating element is used to control the locking mechanism to switch between locked and unlocked states, so that the first rider support rod and the second rider support rod can switch between relatively fixed and relatively rotating states.

[0024] In one embodiment, the frame support structure further includes a first linkage, and the second rider support rod and the seat support rod are pivotally connected to the first connector at different positions.

[0025] In one embodiment, the child vehicle further includes a toothed housing, which is pivotally connected to the seat support rod and covers the first toothed portion. The toothed housing has a meshing opening facing the second toothed portion, through which the second toothed portion passes and meshes with the first toothed portion. The first linkage is an L-shaped structure, with the apex of the L-shaped structure fixed to the toothed housing. One end of the L-shaped structure away from the apex is pivotally connected to the seat support rod, and the other end of the L-shaped structure away from the apex is pivotally connected to the second rider support rod.

[0026] In one embodiment, the frame support structure further includes a rear foot support rod and a second linkage, one end of the second linkage being pivotally connected to the seat support rod and the other end being pivotally connected to the rear foot support rod and the second rider support rod.

[0027] In one embodiment, the frame support structure further includes a front foot assembly, which is pivotally connected to the seat support rod.

[0028] In one embodiment, the front foot assembly includes a first front foot support rod, a front foot connector, and a second front foot support rod that are pivotally connected in sequence. The end of the first front foot support rod away from the front foot connector is pivotally connected to the first rider support rod. The front foot connector is fixedly connected to the rear foot support rod at an angle. The second front foot support rod is pivotally connected to the seat support rod.

[0029] In one embodiment, the child vehicle further includes a seat plate fixed to the seat support rod.

[0030] In one embodiment, there are two frame support structures, and the seat support rods of the two frame support structures are respectively fixed to the left and right sides of the seat plate. There are also two driving members and two driven members, which are used to realize the linkage and folding between the seat support rods and the back support rods of the two frame support structures.

[0031] In one embodiment, the child vehicle 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.

[0032] In one embodiment, the child vehicle further includes a backrest adjustment structure, which includes an adjustment member, a rotating seat, a drive block, a gear, and an elastic member. The driven member is provided with a first gear groove that meshes with the gear. The driven member, the gear, and the rotating seat are coaxially pivotally connected. The backrest support rod is fixed to the rotating seat. The drive block is drivenly connected to the gear. The elastic member is connected between the driven member and the gear. The adjustment member is used to drive the drive block to drive the gear to disengage from the first gear groove.

[0033] In another aspect, the present invention provides a child vehicle, comprising: a frame support structure, including a seat support rod, a rider assembly, a first linkage, a rear foot support rod, and a second linkage; wherein, the rider assembly includes a first rider support rod and a second rider support rod, the second rider support rod and the seat support rod being pivotally connected to the first linkage at different positions; wherein, one end of the second linkage is pivotally connected to the seat support rod, and the other end is pivotally connected to the rear foot support rod and the second rider support rod.

[0034] In one embodiment, the rider assembly further includes an operating element and a locking mechanism, wherein the first rider support rod and the second rider support rod are pivotally connected via the locking mechanism, and the operating element is used to control the locking mechanism to switch between a locked and unlocked state, so that the first rider support rod and the second rider support rod switch between a relatively fixed state and a relatively rotating state.

[0035] In one embodiment, the child vehicle further includes a toothed housing, which is pivotally connected to the seat support rod and covers the first toothed portion. The toothed housing has a meshing opening facing the second toothed portion, through which the second toothed portion passes and meshes with the first toothed portion. The first linkage is an L-shaped structure, with the apex of the L-shaped structure fixed to the toothed housing. One end of the L-shaped structure away from the apex is pivotally connected to the seat support rod, and the other end of the L-shaped structure away from the apex is pivotally connected to the second rider support rod.

[0036] In one embodiment, the frame support structure further includes a front foot assembly, which is pivotally connected to the seat support rod.

[0037] In one embodiment, the front foot assembly includes a first front foot support rod, a front foot connector, and a second front foot support rod that are pivotally connected in sequence. The end of the first front foot support rod away from the front foot connector is pivotally connected to the first rider support rod. The front foot connector is fixedly connected to the rear foot support rod at an angle. The second front foot support rod is pivotally connected to the seat support rod.

[0038] In one embodiment, the child vehicle further includes a seat plate fixed to the seat support rod.

[0039] In one embodiment, the frame support structure further includes a back support rod. There are two frame support structures. The seat support rods of the two frame support structures are respectively fixed to the left and right sides of the seat plate. There are also two driving members and two driven members, which are used to realize the linkage and folding between the seat support rods and the back support rods of the two frame support structures.

[0040] In one embodiment, the child vehicle 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.

[0041] In one embodiment, the child vehicle further includes a backrest adjustment structure, which includes an adjustment member, a rotating seat, a drive block, a gear, and an elastic member. The driven member is provided with a first gear groove that meshes with the gear. The driven member, the gear, and the rotating seat are coaxially pivotally connected. The frame support structure further includes a backrest support rod, which is fixed to the rotating seat. The drive block is driven to the gear. The elastic member is connected between the driven member and the gear. The adjustment member is used to drive the drive block to drive the gear to disengage from the first gear groove.

[0042] In one embodiment, the frame support structure further includes a back support rod, and the child vehicle further includes: a drive member fixed to the seat support rod, the drive member having a first wheel tooth portion; and a driven member fixed to the back support rod, the driven member having a second wheel tooth portion, the first wheel tooth portion meshing with the second wheel tooth portion.

[0043] In one embodiment, the frame support structure further includes a back support rod, which is pivotally connected to the seat support rod.

[0044] In the above-mentioned linkage folding mechanism and child vehicle, the first and second rods are linked for folding via the first gear teeth on the driving member and the second gear teeth on the driven member. Thus, when the first rod rotates, it drives the second rod to rotate at a corresponding angle, thereby achieving the linkage folding function. When the first rod is, for example, a seat support rod and the second rod is, for example, a back support rod, the rotation and folding of the seat support rod will drive the rotation and folding of the back support rod. The linkage folding mechanism has a simple structure, and by using the cooperation of two gear teeth to replace the traditional linkage structure, it is less prone to trapping and has a higher safety factor.

Implementation Method

[0062] As shown in Figures 1, 7, and 8, an embodiment of the present invention provides a child carrier, such as a stroller, which includes a frame support structure 100, a drive component 200, a driven component 300, a wheel tooth housing 400, and a seat plate 500. The child carrier has a simple structure, is not easily trapped when folded, and has a high safety factor.

[0063] Specifically, as shown in Figures 1 and 2, the frame support structure 100 includes a rider assembly 110, a seat support rod 120, a rear foot support rod 130, a front foot assembly 140, a backrest support rod 150, a first linkage 160, a second linkage 170, a backrest adjustment structure 180, and a handrail 190.

[0064] The rider assembly 110 includes a first rider support rod 111, a second rider support rod 112, an operating member 113, and a locking mechanism 114. The first rider support rod 111 and the second rider support rod 112 are pivotally connected by the locking mechanism 114. The operating member 113 is used to control the locking mechanism 114 to switch between locked and unlocked states, so that the first rider support rod 111 and the second rider support rod 112 can switch between relatively fixed and relatively rotating states. In this embodiment, when the stroller is in the open position (i.e., fully open and usable state), the first rider support rod 111 is located above the second rider support rod 112.

[0065] As shown in Figures 3 and 4, the second driver's support rod 112 and the seat support rod 120 are pivotally connected to the first linkage 160 at different positions. The first linkage 160 can realize the linkage and retraction between the second driver's support rod 112 and the seat support rod 120, that is, when the second driver's support rod 112 rotates, the seat support rod 120 will rotate accordingly.

[0066] In this embodiment, as shown in Figures 4 and 13, the first linkage 160 is an iron sheet with a roughly L-shaped structure. The apex of the L-shaped structure is fixed to the gear housing 400, the end of the L-shaped structure away from the apex is pivotally connected to the seat support rod 120, and the other end of the L-shaped structure away from the apex is pivotally connected to the second rider support rod 112. Of course, in other embodiments, the first linkage 160 may also be of other shapes or materials.

[0067] Further, as shown in Figure 4, the second linkage 170 is a roughly elongated iron sheet. One end of the second linkage 170 is pivotally connected to the seat support rod 120, and the other end is pivotally connected to the rear foot support rod 130 and the second rider support rod 112. The second linkage 170 can realize the linkage and retraction between the seat support rod 120 and the rear foot support rod 130. When the seat support rod 120 rotates, the rear foot support rod 130 will rotate accordingly.

[0068] Specifically, as shown in Figure 1, the front foot assembly 140 is pivotally connected to the seat support rod 120. The front foot assembly 140 includes a first front foot support rod 141, a front foot connector 142, and a second front foot support rod 143, which are pivotally connected in sequence. In this embodiment, when the stroller is in the open position, the first front foot support rod 141, the front foot connector 142, and the second front foot support rod 143 are sequentially inclined from top to bottom. The end of the first front foot support rod 141 away from the front foot connector 142 is pivotally connected to the first rider support rod 111, and the pivot point between the first front foot support rod 141 and the first rider support rod 111 is located on the side of the locking mechanism 114 away from the second rider support rod 112, that is, the pivot point between the first front foot support rod 141 and the first rider support rod 111 is spaced apart from the locking mechanism 114. The front foot connector 142 is fixedly connected to the rear foot support rod 130 at an included angle, and the second front foot support rod 143 is pivotally connected to the seat support rod 120. Thus, as shown in Figures 7 to 12, when the operating component 113 is operated, the locking mechanism 114 between the first hand support rod 111 and the second hand support rod 112 is unlocked. The first hand support rod 111 rotates counterclockwise relative to the locking mechanism 114, for example. Then, the first front foot support rod 141, driven by the first hand support rod 111, will rotate clockwise relative to the front foot connector 142. Simultaneously, the second hand support rod 112 rotates clockwise relative to the locking mechanism 114, and through the first linkage 160, drives the seat support rod 120 to rotate counterclockwise relative to the first linkage 160. At the same time, the seat support rod 120 drives the second front foot support rod 143 to rotate counterclockwise relative to the front foot connector 142. Meanwhile, the seat support rod 120 drives the rear foot support rod 130 to rotate clockwise relative to the second linkage 170 through the second linkage 170. Since the rear foot support rod 130 is fixed to the front foot connector 142, the front foot assembly 140 folds in three sections. The first front foot support rod 141, the rear foot support rod 130 and the second front foot support rod 143 fold towards each other, greatly reducing the overall volume of the stroller after folding.

[0069] Further, as shown in Figures 10, 12, and 14, the driving member 200 is fixed to the seat support rod 120, and the driving member 200 has a first gear tooth portion 210. The driven member 300 is fixed to the back support rod 150, and the driven member 300 has a second gear tooth portion 310, with the first gear tooth portion 210 meshing with the second gear tooth portion 310. In this embodiment, the driving member 200 is approximately in the shape of a quarter gear, and the central angle of the first gear tooth portion 210 is approximately 90 degrees. The driven member 300 includes a disc-shaped fixed seat 320 and a driven body 330 in the shape of a third gear. The fixed seat 320 is fixed to the back support rod 150. Specifically, the fixed seat 320 and the back support rod 150 are engaged and connected by a rotating seat 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 can also be two independent components assembled together. The second gear tooth 310 is provided 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 tooth 210 and the second gear tooth 310 can also be adjusted according to actual needs. In this way, the seat support rod 120 and the back support rod 150 can be linked and folded through the first gear tooth 210 on the driving member 200 and the second gear tooth 310 on the driven member 300. Specifically, during the folding process, when the seat support rod 120 rotates counterclockwise relative to the first linkage 160 under the drive of the first linkage 160, the back support rod 150 rotates clockwise relative to the drive member 200, thereby causing the seat support rod 120 and the back support rod 150 to fold closer together. The use of two toothed sections to replace the traditional linkage structure results in a simpler structure, reduces the risk of entrapment, and increases the safety factor.

[0070] Furthermore, the driving component 200 is fixed to one end of the seat support rod 120, and the driven component 300 is fixed to one end of the back support rod 150. In this way, on the one hand, it is convenient to manufacture and process, and on the other hand, it can increase the torque of the seat support rod 120 during the linkage rotation, so that only a small force needs to be applied to the seat support rod 120 to drive the rotation of the back support rod 150.

[0071] Further, as shown in Figures 8 and 13, the gear housing 400 is pivotally connected to the seat support rod 120 and covers 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 passes through the meshing opening 411 and meshes with the first gear tooth portion 210. The gear housing 400 covers the first gear tooth portion 210 and the second gear tooth portion 310, which can prevent the user from being scratched by the first gear tooth portion 210 and the second gear tooth portion 310, thereby increasing safety.

[0072] Optionally, as shown in Figures 4 and 8, the gear housing 400 also has a meshing hole 412. The drive member 200 is fixed to one end of the seat support rod 120, and the drive member 200 and part of the seat support rod 120 extend into the gear housing 400 through the meshing hole 412. The wall of the meshing hole 412 has a first side and a second side. When the seat support rod 120 rotates to abut against the first side, the angle between the seat support rod 120 and the back support rod 150 is the smallest, and the stroller is in the open position. When the seat support rod 120 rotates to abut against the second side, the angle between the seat support rod 120 and the back support rod 150 is the largest, and the stroller is in the folded position. In this way, the rotation angle of the seat support rod 120 can be limited.

[0073] 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 detachably mounted on one side of the housing body 450, for example, on the side of the housing body 450 facing the second gear tooth 310. A meshing opening 411 is formed on the housing cover 460. This facilitates the disassembly and replacement of the drive component 200. In this embodiment, the driven body 330 is disposed inside the housing body 450, the fixing seat 320 is mounted on a portion of one side of the housing body 450, and the housing cover 460 is mounted on the other portion of that side of the housing body 450.

[0074] Further, as shown in Figures 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, and the seat support rods 120 of the two frame support structures 100 are respectively fixed to the left and right sides of the seat plate 500. There are also two driving members 200 and two driven members 300, which are used to realize the linkage and folding between the seat support rods 120 and the back support rods 150 of the two frame support structures 100.

[0075] Specifically, as shown in Figures 16 and 17, the backrest adjustment structure 180 includes an adjustment member 181, a rotating seat 182, a drive block 183, a gear 184, and an elastic member 185. The driven member 300 has a first gear groove 340 that meshes with the gear 184, and the rotating seat 182 has a second gear groove that meshes with the gear 184. In this embodiment, the fixed seat 320 of the driven member 300 has a first gear groove 340 that meshes with the gear 184. The driven member 300, the gear 184, and the rotating seat 182 are coaxially pivotally connected. The backrest support rod 150 is fixed to the rotating seat 182. The drive block 183 is drivenly connected to the gear 184. 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 drive the gear 184 out of the first gear groove 340. In this embodiment, the adjustment member 181 is an adjustment wire. Therefore, when it is necessary to adjust the angle of the back support rod 150 relative to the seat plate 500, the adjusting member 181 can be pulled, which will cause the drive block 183 to drive the gear 184 to disengage from the first gear groove 340, thereby releasing the engagement lock between the back support rod 150 and the driven member 300, and thus adjusting the angle of the back support rod 150. The elastic member 185 can then restore the gear 184 to its engagement lock within the fixed seat 320.

[0076] Furthermore, the armrest 190 is a U-shaped bar, and the two ends of the armrest 190 are detachably connected to the front foot connectors 142 of the two frame support structures 100 respectively.

[0077] In another embodiment, as shown in Figures 14 and 15, the child vehicle also includes an extension plate 600. The front side of the extension plate 600 is pivotally connected to the rear side of the seat plate 500, and the two ends of the rear side 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 spliced ​​with the seat plate 500 to form a more spacious and comfortable riding space. Moreover, since the extension plate 600 and the seat plate 500 are pivotally connected to each other, and the extension plate 600 is fixed to the backrest support rod 150, during the folding process, the backrest support rod 150 can drive the extension plate 600 to fold relative to the seat plate 500, further reducing the volume of the child vehicle after folding.

[0078] Another embodiment of the present invention provides a linkage folding mechanism suitable for child vehicles, such as strollers. The linkage folding mechanism has a simple structure, is not prone to trapping, and has a high safety factor.

[0079] Specifically, as shown in Figures 8, 10 and 12, the linkage folding mechanism includes a first rod 10, a second rod 20, a driving member 200, a driven member 300 and a gear housing 400.

[0080] The driving member 200 is fixed to the first rod 10, and the driving member 200 has a first gear tooth 210. The driven member 300 is fixed to the second rod 20, and the driven member 300 has a second gear tooth 310, with the first gear tooth 210 meshing with the second gear tooth 310. The first rod 10 can be, for example, a stroller seat support rod 120, and the second rod 20 can be, for example, a stroller back support rod 150. Of course, in other embodiments, the first rod 10 and the second rod 20 can also be other components in the stroller that require a linkage folding function, such as the first rod 10 being the stroller handle assembly 110, and the second rod 20 being the stroller seat support rod 120, etc., without limitation. In this embodiment, the driving member 200 is approximately in the shape of a quarter gear, and the central angle of the first gear tooth 210 is approximately 90 degrees. The driven member 300 includes a disc-shaped fixed base 320 and a driven body 330 in the shape of a 1 / 3 gear. 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 can also be two independent components assembled together. The second gear tooth 310 is disposed on the driven body 330. The central angle of the first gear tooth 210 and the second gear tooth 310 can limit the 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 this, and the central angles of the first gear tooth 210 and the second gear tooth 310 can also be adjusted according to actual needs. Thus, the first link 10 and the second link 20 are linked and folded through the first gear tooth 210 on the driving member 200 and the second gear tooth 310 on the driven member 300. Replacing the traditional linkage structure with the cooperation of these two gear teeth results in a simpler structure, reduces the risk of jamming, and provides a higher safety factor.

[0081] Furthermore, the driving member 200 is fixed to one end of the first rod 10, and the driven member 300 is fixed to one end of the second rod 20. In this way, on the one hand, it is convenient to manufacture and process the linkage folding mechanism, and on the other hand, it can increase the torque of the first rod 10 during linkage rotation, so that only a small force needs to be applied to the first rod 10 to drive the rotation of the second rod 20.

[0082] Further, as shown in Figures 8 and 13, the linkage folding mechanism also includes a gear housing 400, which is pivotally connected to the first rod 10 and covers 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 passes through the meshing opening 411 and meshes with the first gear tooth portion 210. The gear housing 400 covers the first gear tooth portion 210 and the second gear tooth portion 310, which can prevent the user from being scratched by the first gear tooth portion 210 and the second gear tooth portion 310, and increase the safety of the linkage folding mechanism.

[0083] Optionally, as shown in Figures 4 and 8, the gear housing 400 further has a meshing hole 412. The driving member 200 is fixed to one end of the first rod 10. The driving member 200 and part 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 and a second side facing each other. When the first rod 10 rotates to abut against the first side, the included angle between the first rod 10 and the second rod 20 is the smallest, and the linkage folding mechanism is in the open position. When the first rod 10 rotates to abut against the second side, the included angle between the first rod 10 and the second rod 20 is the largest, and the linkage folding mechanism is in the folded position. In this way, the rotation angle of the first rod 10 can be limited.

[0084] 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 detachably mounted on one side of the housing body 450, for example, on the side of the housing body 450 facing the second gear tooth 310. A meshing opening 411 is formed on the housing cover 460. This facilitates the disassembly and replacement of the drive component 200. In this embodiment, the driven body 330 is disposed inside the housing body 450, the fixing seat 320 is mounted on a portion of one side of the housing body 450, and the housing cover 460 is mounted on the other portion of that side of the housing body 450.

[0085] The above-mentioned linkage folding mechanism and child vehicle have at least the following advantages:

[0086] The first link 10 and the second link 20 are linked and folded through the first gear 210 on the driving member 200 and the second gear 310 on the driven member 300. Thus, when the first link 10 rotates, it drives the second link 20 to rotate at a corresponding angle, thereby achieving the linked folding function. When the first link 10 is, for example, a seat support rod 120 and the second link 20 is, for example, a back support rod 150, the rotation and folding of the seat support rod 120 will drive the rotation and folding of the back support rod 150. The linked folding mechanism has a simple structure, and by using the cooperation of two gears instead of a traditional linkage structure, it is less prone to jamming and has a higher safety factor.

[0087] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-described embodiments are merely illustrative of several implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims. [Simplified Explanation of the Diagram]

[0045] Figure 1 shows a schematic diagram of the structure of a child vehicle provided in an embodiment of the present invention.

[0046] Figure 2 is an enlarged view of point A in Figure 1.

[0047] Figure 3 shows a structural schematic diagram of the child vehicle in Figure 1 from another perspective.

[0048] Figure 4 is an enlarged view of section B in Figure 3.

[0049] Figure 5 shows a structural schematic diagram of the child vehicle in Figure 1 with the seat and armrests omitted.

[0050] Figure 6 is an enlarged view of point C in Figure 5.

[0051] Figure 7 shows a side sectional view of the child vehicle in Figure 5, with the child vehicle in the open position.

[0052] Figure 8 is an enlarged view of point D in Figure 7.

[0053] Figure 9 shows a side sectional view of the child vehicle in Figure 5, in the transition state between the open and closed positions.

[0054] Figure 10 is an enlarged view of point E in Figure 9.

[0055] Figure 11 shows a side sectional view of the child vehicle in Figure 5, with the child vehicle in the folded-in position.

[0056] Figure 12 is an enlarged view of point F in Figure 11.

[0057] Figure 13 is a partial enlarged view of Figure 3.

[0058] Figure 14 shows a structural schematic diagram of a child vehicle provided in another embodiment of the present invention, in which the child vehicle is in the opened position.

[0059] Figure 15 shows a structural schematic diagram of the child vehicle in Figure 14 from another perspective, at which point the child vehicle is in the folded-in position.

[0060] Figure 16 shows a partial exploded view of the child vehicle in Figure 14.

[0061] Figure 17 is a schematic diagram of Figure 16.

Claims

1. A child vehicle, comprising: The frame support structure includes the seat support bar and the rider assembly; A drive member, fixed to the rider assembly, the drive member having a first gear tooth; and a driven member, fixed to the seat support rod, the driven member having a second gear tooth, the first gear tooth meshing with the second gear tooth.

2. The child vehicle as described in claim 1, wherein, The rider assembly includes a first rider support bar, a second rider support bar, an operating element, and a locking mechanism. The locking mechanism is configured to lock and unlock, allowing the first and second rider support bars to switch between relatively fixed and relatively rotating states. The operating element controls the switching of the locking mechanism between the locked and unlocked states.

3. The child vehicle as claimed in claim 1, wherein, The rider assembly includes a first rider support rod and a second rider support rod. The frame support structure also includes a first linkage. The second rider support rod and the seat support rod are pivotally connected to the first linkage at different positions.

4. The child vehicle as claimed in claim 1, wherein, The rider assembly includes a first rider support rod and a second rider support rod. The frame support structure also includes a rear foot support rod and a second linkage. One end of the second linkage is pivotally connected to the seat support rod, and the other end is pivotally connected to the rear foot support rod and the second rider support rod.

5. The child vehicle as claimed in claim 1, wherein, The child vehicle also includes a toothed housing, which is pivotally connected to the seat support rod. The toothed housing has a meshing opening, through which the second toothed portion passes and meshes with the first toothed portion.

6. The child vehicle as claimed in claim 5, wherein, The gear housing also has a meshing hole, the drive member is fixed to one end of the rider assembly, and the drive member and a part of the rider assembly extend into the gear housing through the meshing hole.

7. The child vehicle as claimed in claim 2, wherein, The frame support structure also includes a front foot assembly, which is pivotally connected to the seat support rod.

8. The child vehicle as described in claim 7, wherein, The front foot assembly includes a first front foot support rod, a front foot connector, and a second front foot support rod that are pivotally connected in sequence. The end of the first front foot support rod away from the front foot connector is pivotally connected to the first rider support rod. The front foot connector is fixedly connected to the rear foot support rod at an angle. The second front foot support rod is pivotally connected to the seat support rod.

9. The child vehicle as claimed in claim 8, wherein, The front foot assembly is divided into three folding sections. When the operating component is operated, the locking mechanism is unlocked, and the first front foot support rod, the rear foot support rod, and the second front foot support rod fold towards each other.

10. The child vehicle as claimed in claim 8, wherein, When the operating component is operated, the locking mechanism is unlocked, the first rider support rod rotates counterclockwise relative to the locking mechanism, and the first front foot support rod rotates clockwise relative to the front foot connector under the drive of the first rider support rod; the second rider support rod rotates clockwise relative to the locking mechanism, and drives the second front foot support rod to rotate counterclockwise relative to the front foot connector through the seat support rod.

11. The child vehicle as claimed in claim 1, wherein, The child vehicle also includes a seat plate, which is fixed to the seat support rod.

12. The child vehicle as claimed in claim 11, wherein, There are two frame support structures, and the seat support rods of the two frame support structures are respectively fixed to the left and right sides of the seat plate. There are also two driving components and two driven components, which are used to realize the linkage and folding between the seat support rods of the two frame support structures and the rider assembly.

13. The child vehicle as claimed in claim 11, wherein, The child vehicle also includes an extension plate, and the frame support structure also includes two back support rods. The front side of the extension plate 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 two back support rods. During the folding process of the back support rods, the back support rods can drive the extension plate to fold relative to the seat plate.

Images