WO2023031312A1

WO2023031312A1 - Linked foldable mechanism and children's carrier

Info

Publication number: WO2023031312A1
Application number: PCT/EP2022/074270
Authority: WO
Inventors: Haitao Wu
Original assignee: Wonderland Switzerland Ag
Priority date: 2021-09-01
Filing date: 2022-09-01
Publication date: 2023-03-09
Also published as: TW202311094A; TWI836578B; CN115723831A

Abstract

The present application discloses a linked foldable mechanism and a children's carrier. The linked foldable mechanism includes a first rod, a second rod, a driving member, and a driven member. The driving member is fixed on the first rod. The driving member includes a first gear teeth portion. The driven member is fixed on the second rod. The driven member includes a second gear teeth portion. The first gear teeth portion is engaged with the second gear teeth portion. The linked foldable mechanism and the children's carrier have a simple structure, and are not easy to cause a sandwiching phenomenon.

Description

LINKED FOLDABLE MECHANISM AND CHILDREN’S CARRIER

TECHNICAL FIELD

[0001] The present application relates to the technical field of children’s carriers, in particular, to a linked foldable mechanism and a children’s carrier.

BACKGROUND

[0002] Children’s carriers, such as strollers, have become an indispensable travel tool for children, which can greatly improve the convenience of children’s travel. The stroller generally includes a backrest to support the child’s back. In order to reduce the packaging volume and the storage volume, generally, when a frame of the stroller is folded, the backrest can be folded synchronously. However, the linked folding of the backrest is generally achieved by a linkage structure. The linkage structure is more complicated, and the sandwiching phenomenon is easy to occur, resulting in injury to children or parents.

SUMMARY

[0003] Accordingly, it is necessary to provide a linked foldable mechanism and a children’s carrier, which have a simple structure and is not easy to cause the sandwiching phenomenon.

[0004] In an aspect of the present application, a linked foldable mechanism is provided. The linked foldable mechanism includes a first rod, a second rod, a driving member, and a driven member. The driving member is fixed on the first rod. The driving member includes a first gear teeth portion. The driven member is fixed on the second rod. The driven member includes a second gear teeth portion. The first gear teeth portion is engaged with the second gear teeth portion.

[0005] In one of the embodiments, the driving member is fixed to an end of the first rod. The driven member is fixed to an end of the second rod.

[0006] In one of the embodiments, the linked foldable mechanism further includes a gear housing. The gear housing is pivotally connected to the first rod and covers an outside of the first gear teeth portion. The gear housing includes an engagement opening facing the second gear teeth portion. The second gear teeth portion is engaged with the first gear teeth portion through the engagement opening.

[0007] In one of the embodiments, the gear housing further includes an engagement hole. The driving member is fixed to an end of the first rod. The driving member and part of the first rod extend into the gear housing through the engagement hole. A hole wall of the engagement hole has a first side and a second side that are opposite to each other. When the first rod is rotated to abut against the first side, an included angle between the first rod and the second rod is the smallest; and when the first rod is rotated to abut against the second side, an included angle between the first rod and the second rod is the largest.

[0008] In one of the embodiments, the gear housing includes a housing body and a housing cover. The housing cover is detachably covered on a side of the housing body facing the second gear teeth portion. The engagement opening is defined on the housing cover.

[0009] In another aspect of the present application, a children’s carrier is provided. The children’s carrier includes:

[0010] a frame supporting structure including a backrest supporting rod and a seat supporting rod;

[0011] a driving member fixed on the seat supporting rod and including a first gear teeth portion; and

[0012] a driven member fixed on the backrest supporting rod and including a second gear teeth portion; wherein the first gear teeth portion is engaged with the second gear teeth portion.

[0013] In one of the embodiments, the frame supporting structure further includes a handle assembly. The handle assembly includes a first handle supporting rod, a second handle supporting rod, an operating member, and a locking mechanism. The first handle supporting rod is pivotally connected to the second handle supporting 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 supporting rod and the second handle supporting rod are switched between a state of being fixed relative to each other and a state of being rotated relative to each other.

[0014] In one of the embodiments, the frame supporting structure further includes a first linkage. The second handle supporting rod and the seat supporting rod are pivotally connected to the first linkage at different locations, respectively.

[0015] In one of the embodiments, the children’s carrier further includes a gear housing. The gear housing is pivotally connected to the seat supporting rod and covers an outside of the first gear teeth portion. The gear housing includes an engagement opening facing the second gear teeth portion. The second gear teeth portion is engaged with the first gear teeth portion through the engagement opening. The first linkage has an L-shaped structure. An apex of the L-shaped structure is fixed on the gear housing. An end of the L-shaped structure away from the apex is pivotally connected to the seat supporting rod, and the other end of the L-shaped structure away from the apex is pivotally connected to the second handle supporting rod.

[0016] In one of the embodiments, the frame supporting structure further includes a rear feet supporting rod and a second linkage. An end of the second linkage is pivotally connected to the seat supporting rod, and the other end of the second linkage is pivotally connected to the rear feet supporting rod and the second handle supporting rod.

[0017] In one of the embodiments, the frame supporting structure further includes a front feet assembly. The front feet assembly is pivotally connected to the seat supporting rod.

[0018] In one of the embodiments, the front feet assembly includes a first front feet supporting rod, a front feet connecting member, and a second front feet supporting rod that are pivotally connected in sequence. An end of the first front feet supporting rod away from the front feet connecting member is pivotally connected to the first handle supporting rod. The front feet connecting member is fixedly connected to the rear feet supporting rod at an included angle. The second front feet supporting rod is pivotally connected to the seat supporting rod.

[0019] In one of the embodiments, the children’s carrier further includes a seat plate. The seat plate is fixed on the seat supporting rod.

[0020] In one of the embodiments, there are two frame supporting structures. The seat supporting rods of the two frame supporting structures are respectively fixed on left and right sides of the seat plate. There are two driving members and two driven members. The two driving members and two driven members are configured to realize a linked folding between the seat supporting rods and the backrest supporting rods of the two frame supporting structures, respectively.

[0021] In one of the embodiments, the children’s carrier further includes an extension plate. A front side of the extension plate is pivotally connected to a rear side of the seat plate. Two ends of a rear side of the extension plate are fixed to the backrest supporting rods of the two frame supporting structures, respectively.

[0022] In one of the embodiments, the children’s carrier further includes a backrest adjusting structure. The backrest adjusting structure includes an adjusting member, a rotating base, a driving block, a gear, and an elastic member. The driven member is provided with a first gear groove that is engaged with the gear. The driven member, the gear, and the rotating base are pivotally connected coaxially. The backrest supporting rod is fixed on the rotating base. The driving block is drivingly connected to the gear. The elastic member is connected between the driven member and the gear. The adjusting member is configured to drive the driving block to drive the gear out of the first gear groove. [0023] In the above linked foldable mechanism and the children’s carrier, the first rod and the second rod are folded in a linked manner through the first gear teeth portion on the driving member and the second gear teeth portion on 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 function of linked folding. When the first rod is, for example, the seat supporting rod, and the second rod is, for example, the backrest supporting rod, the backrest supporting rod can be driven to be rotated and folded when the seat supporting rod is rotated and folded. The linked foldable mechanism has a simple structure, and can replace the conventional linkage structure through the cooperation of two gear teeth portions. In addition, the linked foldable mechanism is not easy to cause the sandwiching phenomenon, and has higher safety factor.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a schematic view of a children’s carrier according to an embodiment of the present application.

[0025] FIG. 2 is an enlarged view of a portion A of FIG. 1.

[0026] FIG. 3 is a schematic view of the children’s carrier shown in FIG. 1, from another perspective.

[0027] FIG. 4 is an enlarged view of a portion B of FIG. 3.

[0028] FIG. 5 is a schematic view of the children’s carrier shown in FIG. 1, wherein a seat plate and an armrest are omitted.

[0029] FIG. 6 is an enlarged view of a portion C of FIG. 5.

[0030] FIG. 7 is a side cross-sectional view of the children’s carrier shown in FIG. 5, wherein the children’s carrier is in an unfolded position.

[0031] FIG. 8 is an enlarged view of a portion D of FIG. 7.

[0032] FIG. 9 is a side cross-sectional view of the children’s carrier shown in FIG. 5, wherein the children’s carrier is in a transition position between the unfolded position and a folded position.

[0033] FIG. 10 is an enlarged view of a portion E of FIG. 9.

[0034] FIG. 11 is a side cross-sectional view of the children’s carrier shown in FIG. 5, wherein the children’s carrier is in the folded position.

[0035] FIG. 12 is an enlarged view of a portion F of FIG. 11.

[0036] FIG. 13 is a partial enlarged view of FIG. 3.

[0037] FIG. 14 is a schematic view of a children’s carrier according to another embodiment of the present application, wherein the children’s carrier is in the unfolded position.

[0038] FIG. 15 is a schematic view of the children’s carrier shown in FIG. 14 from another perspective, wherein the children’s carrier is in the folded position. [0039] FIG. 16 is a partial exploded view of the children’s carrier shown in FIG. 14.

[0040] FIG. 17 is a schematic view of FIG. 16.

[0041] Illustration for reference signs:

[0042] 100, frame supporting structure; 110, handle assembly; 111, first handle supporting rod; 112, second handle supporting rod; 113, operating member; 114, locking mechanism; 120, seat supporting rod; 130, rear feet supporting rod; 140, front feet assembly; 141, first front feet supporting rod; 142, front feet connecting member; 143, second front feet supporting rod; 150, backrest supporting rod; 160, first linkage; 170, second linkage; 180, backrest adjusting structure; 181, adjusting member; 182, rotating base; 183, driving block; 184, gear; 185, elastic member; 190, armrest; 200, driving member; 210, first gear teeth portion; 300, driven member; 310, second gear teeth portion; 320, fixed base; 330, driven body; 340, first gear groove; 400, gear housing; 411, engagement opening; 412, engagement hole; 450, housing body; 460, housing cover; 500, seat plate; 600, extension plate; 10, first rod; 20, second rod.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] As shown in FIGS. 1, 7, and 8, an embodiment of the present application provides a children’s carrier, such as a stroller. The children’s carrier includes a frame supporting structure 100, a driving member 200, a driven member 300, a gear housing 400, and a seat plate 500. The children’s carrier has a simple structure, is not easy to cause a sandwiching phenomenon when folded, and has a high safety factor.

[0044] Specifically, as shown in FIGS. 1 and 2, the frame supporting structure 100 includes a handle assembly 110, a seat supporting rod 120, a rear feet supporting rod 130, a front feet assembly 140, a backrest supporting rod 150, a first linkage 160, a second linkage 170, a backrest adjusting structure 180, and an armrest 190.

[0045] The handle assembly 110 includes a first handle supporting rod 111, a second handle supporting rod 112, an operating member 113, and a locking mechanism 114. The first handle supporting rod Ill is pivotally connected to the second handle supporting rod 112 by the locking mechanism 114. The operating member 113 is used to control the locking mechanism 114 to switch between a locked state and an unlocked state, so that the first handle supporting rod 111 and the second handle supporting rod 112 are switched between a state of being fixed relative to each other and a state of being rotated relative to each other. In this embodiment, when the stroller is in an unfolded position (i.e., in a position of being fully unfolded and ready for use), the first handle supporting rod 111 is arranged above the second handle supporting rod 112.

[0046] As shown in FIGS. 3 and 4, the second handle supporting rod 112 and the seat supporting rod 120 are pivotally connected to the first linkage 160 at different locations, respectively. The first linkage 160 can be used to realize the linkage and folding between the second handle supporting rod 112 and the seat supporting rod 120. That is, when the second handle supporting rod 112 is rotated, the seat supporting rod 120 will be rotated accordingly.

[0047] In this embodiment, as shown in FIGS. 4 and 13, the first linkage 160 is an iron sheet having a substantially L-shaped structure. An apex of the L-shaped structure is fixed on the gear housing 400. An end of the L-shaped structure away from the apex is pivotally connected to the seat supporting rod 120, and the other end of the L-shaped structure away from the apex is pivotally connected to the second handle supporting rod 112. Of course, in other embodiments, the first linkage 160 may also be of other shapes or made of other materials.

[0048] Further, as shown in FIG. 4, the second linkage 170 is an iron sheet having a substantially strip-shaped structure. An end of the second linkage 170 is pivotally connected to the seat supporting rod 120, and the other end of the second linkage 170 is pivotally connected to the rear feet supporting rod 130 and the second handle supporting rod 112. The second linkage 170 can be used to realize the linkage and folding between the seat supporting rod 120 and the rear feet supporting rod 130. When the seat supporting rod 120 is rotated, the rear feet supporting rod 130 will be rotated accordingly.

[0049] Specifically, as shown in FIG. 1, the front feet assembly 140 is pivotally connected to the seat supporting rod 120. The front feet assembly 140 includes a first front feet supporting rod 141, a front feet connecting member 142, and a second front feet supporting rod 143 that are pivotally connected in sequence. In this embodiment, when the stroller is in the unfolded position, the first front feet supporting rod 141, the front feet connecting member 142, and the second front feet supporting rod 143 are sequentially inclined in a direction from top to bottom. An end of the first front feet supporting rod 141 away from the front feet connecting member 142 is pivotally connected to the first handle supporting rod 111. A pivoting point between the first front feet supporting rod 141 and the first handle supporting rod 111 is arranged at a side of the locking mechanism 114 away from the second handle supporting rod 112. That is, the pivoting point between the first front feet supporting rod 141 and the first handle supporting rod 111 is spaced apart from the locking mechanism 114. The front feet connecting member 142 is fixedly connected to the rear feet supporting rod 130 at an included angle. The second front feet supporting rod 143 is pivotally connected to the seat supporting rod 120. In this way, as shown in FIGS. 7 to 12, when the operating member 113 is operated, the locking mechanism 114 between the first handle supporting rod 111 and the second handle supporting rod 112 is unlocked, and the first handle supporting rod 111 is rotated, for example in a counterclockwise direction, relative to the locking mechanism 114, then the first front feet supporting rod

141 will be rotated in a clockwise direction relative to the front feet connecting member

142 under the driving of the first handle supporting rod 111. At the same time, the second handle supporting rod 112 is rotated in the clockwise direction relative to the locking mechanism 114, and drives the seat supporting rod 120 to rotate counterclockwise relative to the first linkage 160 through the first linkage 160. At the same time, the seat supporting rod 120 drives the second front feet supporting rod 143 to rotate counterclockwise relative to the front feet connecting member 142. At the same time, the seat supporting rod 120 drives the rear feet supporting rod 130 to rotate clockwise relative to the second linkage 170 through the second linkage 170. Since the rear feet supporting rod 130 is fixed on the front feet connecting member 142, the front feet assembly 140 can be folded in three sections; the first front feet supporting rod 141, the rear feet supporting rod 130, and the second front feet supporting rod 143 are folded by approaching each other, which greatly reduces the overall volume of the stroller after being folded.

[0050] Further, as shown in FIGS. 10, 12, and 14, the driving member 200 is fixed on the seat supporting rod 120. The driving member 200 includes a first gear teeth portion 210. The driven member 300 is fixed on the backrest supporting rod 150. The driven member 300 includes a second gear teeth portion 310. The first gear teeth portion 210 is engaged with the second gear teeth portion 310. In this embodiment, the driving member 200 is substantially in a shape of a quarter gear, and a central angle of the first gear teeth portion 210 is approximately 90 degrees. The driven member 300 includes a disc-shaped fixed base 320 and a driven body 330 in a shape of a 1/3 gear. The fixed base 320 is fixed on the backrest supporting rod 150. Specifically, the fixed base 320 is snap-connected to the backrest supporting rod 150 through a rotating base 182. The driven body 330 is fixed on 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 separate components, which can be assembled together. The second gear teeth portion 310 is disposed on the driven body 330. Of course, shapes of the driving member 200 and the driven member 300 are not limited thereto, and the central angles of the first gear teeth portion 210 and the second gear teeth portion 310 can also be adjusted according to actual needs. In this way, the seat supporting rod 120 and the backrest supporting rod 150 can be folded in a linked manner through the first gear teeth portion 210 on the driving member 200 and the second gear teeth portion 310 on the driven member 300. Specifically, during the folding process, when the seat supporting rod 120 is driven by the first linkage 160 to rotate counterclockwise relative to the first linkage 160, the backrest supporting rod 150 is rotated clockwise relative to the driving member 200, so that the seat supporting rod 120 and the backrest supporting rod 150 are folded by approaching each other. The cooperation of the two gear teeth portions can replace the conventional linkage structure, and such structure is simple, is not easy to cause the sandwiching phenomenon, and has higher safety factor.

[0051] Further, the driving member 200 is fixed to an end of the seat supporting rod 120, and the driven member 300 is fixed to an end of the backrest supporting rod 150. In this way, on the one hand, the manufacturing and processing can be facilitated; on the other hand, the torque of the seat supporting rod 120 during the linked rotation process can be increased, so that only a small force needs to be applied to the seat supporting rod 120 to drive the backrest supporting rod 150 to rotate. [0052] Further, as shown in FIGS. 8 and 13, the gear housing 400 is pivotally connected to the seat supporting rod 120 and covers an outside of the first gear teeth portion 210. The gear housing 400 includes an engagement opening 411. The engagement opening 411 faces the second gear teeth portion 310. The second gear teeth portion 310 is engaged with the first gear teeth portion 210 through the engagement opening 411. The gear housing 400 covers the first gear teeth portion 210 and the second gear teeth portion 310, which can prevent the user from being scratched by the first gear teeth portion 210 and the second gear teeth portion 310, thereby increasing safety.

[0053] Optionally, as shown in FIGS. 4 and 8, the gear housing 400 further includes an engagement hole 412. The driving member 200 is fixed to an end of the seat supporting rod 120, and the driving member 200 and part of the seat supporting rod 120 extend into the gear housing 400 through the engagement hole 412. A hole wall of the engagement hole 412 has a first side and a second side that are opposite to each other. When the seat supporting rod 120 is rotated to abut against the first side, an included angle between the seat supporting rod 120 and the backrest supporting rod 150 is the smallest, and the stroller is in the unfolded position. When the seat supporting rod 120 is rotated to abut against the second side, an included angle between the seat supporting rod 120 and the backrest supporting rod 150 is the largest, and the stroller is in the folded position. In this way, the rotation angle of the seat supporting rod 120 can be limited.

[0054] Optionally, as shown in FIGS. 6 and 13, the gear housing 400 includes a housing body 450 and a housing cover 460. The housing cover 460 is detachably covered on a side surface of the housing body 450, for example, detachably covered on a side of the housing body 450 facing the second gear teeth portion 310. The engagement opening 411 is defined on the housing cover 460. In this way, the detachment and replacement of the driving member 200 can be facilitated. In this embodiment, the driven body 330 is disposed in the housing body 450, the fixed base 320 covers a part of a side surface of the housing body 450, and the housing cover 460 covers the other part of the side surface of the housing body 450.

[0055] Further, as shown in FIGS. 1 to 4, the seat plate 500 is fixed on the seat supporting rod 120. In this embodiment, there are two frame supporting structures 100. The seat supporting rods 120 of the two frame supporting structures 100 are respectively fixed on the left and right sides of the seat plate 500. There are two driving members 200 and two driven members 300. The two driving members 200 and two driven members 300 are used to realize the linked folding between the seat supporting rods 120 and the backrest supporting rods 150 of the two frame supporting structures 100, respectively.

[0056] Specifically, as shown in FIGS. 16 and 17, the backrest adjusting structure 180 includes an adjusting 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 is engaged with the gear 184, and the rotating base 182 is provided with a second gear groove that is engaged with the gear 184. In this embodiment, first gear groove 340 that is engaged with the gear 184 is disposed on the fixed base 320 of the driven member 300. The driven member 300, the gear 184, and the rotating base 182 are pivotally connected coaxially. The backrest supporting rod 150 is fixed on the rotating 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. The adjusting member 181 is used to drive the driving block 183 to drive the gear 184 out of the first gear groove 340. In this embodiment, the adjusting member 181 is an adjusting iron wire. In this way, when an angle of the backrest supporting rod 150 relative to the seat plate 500 needs to be adjusted, the adjusting member 181 can be pulled to drive the driving block 183 to drive the gear 184 out of the first gear groove 340, so that the engagement locking between the backrest supporting rod 150 and the driven member 300 is released, then the angle of the backrest supporting rod 150 can be adjusted. The elastic member 185 can restore the engagement locking of the gear 184 in the fixed base 320.

[0057] Further, the armrest 190 is a U-shaped rod. Two ends of the armrest 190 are detachably connected to the front feet connecting members 142 of the two frame supporting structures 100, respectively.

[0058] In another embodiment, as shown in FIGS. 14 and 15, the children’ carrier further includes an extension plate 600. A front side of the extension plate 600 is pivotally connected to a rear side of the seat plate 500. Two ends of a rear side of the extension plate 600 are fixed to the backrest supporting rods 150 of the two frame supporting structures 100, respectively. The extension plate 600 can be spliced with the seat plate 500 to form a more spacious and comfortable seating space. Moreover, 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 supporting rod 150. Therefore, during the folding process, the backrest supporting rod 150 can drive the extension plate 600 to be folded relative to the seat plate 500, thereby further reducing the volume of the children’s carrier after being folded.

[0059] Another embodiment of the present application provides a linked foldable mechanism, which is applicable in children’s carriers, such as strollers. The linked foldable mechanism has a simple structure, is not easy to cause a sandwiching phenomenon, and has a high safety factor.

[0060] Specifically, as shown in FIGS. 8, 10, and 12, the linked foldable mechanism includes a first rod 10, a second rod 20, a driving member 200, a driven member 300, and a gear housing 400.

[0061] The driving member 200 is fixed on the first rod 10. The driving member 200 includes a first gear teeth portion 210. The driven member 300 is fixed on the second rod 20. The driven member 300 includes a second gear teeth portion 310. The first gear teeth portion 210 is engaged with the second gear teeth portion 310. The first rod 10 may be, for example, the seat supporting rod 120 of the stroller. The second rod 20 may be, for example, the backrest supporting rod 150 of the stroller. Of course, in other embodiments, the first rod 10 and the second rod 20 can also be other components in the stroller that need to have a linked foldable function. For example, the first rod 10 can be the handle assembly 110 of the above stroller, and the second rod 20 may be the seat supporting rod 120 of the above stroller, etc., which are not limited thereto. In this embodiment, the driving member 200 is substantially in a shape of a quarter gear, and a central angle of the first gear teeth portion 210 is approximately 90 degrees. The driven member 300 includes a disc-shaped fixed base 320 and a driven body 330 in a shape of a 1/3 gear. The fixed base 320 is fixed on the second rod 20, and the driven body 330 is fixed on 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 also be two separate components, which can be assembled together. The second gear teeth portion 310 is disposed on the driven body 330. The central angles of the first gear teeth portion 210 and the second gear teeth portion 310 can be set to limit an included angle between the first rod 10 and the second rod 20 within a certain range. Of course, shapes of the driving member 200 and the driven member 300 are not limited thereto, and the central angles of the first gear teeth portion 210 and the second gear teeth portion 310 can also 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 through the first gear teeth portion 210 on the driving member 200 and the second gear teeth portion 310 on the driven member 300. The cooperation of the two gear teeth portions can replace the conventional linkage structure, and such structure is simple, is not easy to cause the sandwiching phenomenon, and has higher safety factor.

[0062] Further, 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. In this way, on the one hand, the manufacturing and processing of the linked foldable mechanism can be facilitated, and on the other hand, the torque of the first rod 10 during the linked rotation process can be increased, so that only a small force can be applied to the first rod 10 to drive the second rod 20 to rotate.

[0063] Further, as shown in FIGS. 8 and 13, the linked foldable mechanism further includes a gear housing 400. The gear housing 400 is pivotally connected to the first rod 10 and covers an outside of the first gear teeth portion 210. The gear housing 400 includes an engagement opening 411. The engagement opening 411 faces the second gear teeth portion 310. The second gear teeth portion 310 is engaged with the first gear teeth portion 210 through the engagement opening 411. The gear housing 400 covers the first gear teeth portion 210 and the second gear teeth portion 310, which can prevent the user from being scratched by the first gear teeth portion 210 and the second gear teeth portion 310, and increases the safety of the linked foldable mechanism.

[0064] Optionally, as shown in FIGS. 4 and 8, the gear housing 400 further includes an engagement hole 412. The driving member 200 is fixed to an 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 engagement hole 412. A hole wall of the engagement hole 412 has a first side and a second side that are opposite to each other. When the first rod 10 is rotated to abut against the first side, an included angle between the first rod 10 and the second rod 20 is the smallest, and the linked foldable mechanism is in the unfolded position. When the first rod 10 is rotated to abut against the second side, an included angle between the first rod 10 and the second rod 20 is the largest, and the linked foldable mechanism is in the folded position. In this way, the rotation angle of the first rod 10 can be limited.

[0065] Optionally, as shown in FIGS. 6 and 13, the gear housing 400 includes a housing body 450 and a housing cover 460. The housing cover 460 is detachably covered on a side surface of the housing body 450, for example, detachably covered on a side of the housing body 450 facing the second gear teeth portion 310. The engagement opening 411 is defined on the housing cover 460. In this way, the detachment and replacement of the driving member 200 can be facilitated. In this embodiment, the driven body 330 is disposed in the housing body 450, the fixed base 320 covers a part of a side surface of the housing body 450, and the housing cover 460 covers the other part of the side surface of the housing body 450.

[0066] The above-mentioned linked foldable mechanism and the children’s carrier have at least the following advantages.

[0067] The first rod 10 and the second rod 20 are folded in a linked manner through the first gear teeth portion 210 on the driving member 200 and the second gear teeth portion 310 on the driven member 300. In this way, when the first rod 10 is rotated, the second rod 20 can be driven to rotate by a corresponding angle, thereby realizing the function of linked folding. When the first rod 10 is, for example, the seat supporting rod 120, and the second rod 20 is, for example, the backrest supporting rod 150, the backrest supporting rod 150 can be driven to be rotated and folded when the seat supporting rod 120 is rotated and folded. The linked foldable mechanism has a simple structure, and can replace the conventional linkage structure through the cooperation of two gear teeth portions. In addition, the linked foldable mechanism is not easy to cause the sandwiching phenomenon, and has higher safety factor.

[0068] The technical features of the above-described embodiments can be combined arbitrarily. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, all of the combinations of these technical features should be considered as being fallen within the scope of the present application, as long as such combinations do not contradict with each other.

[0069] The foregoing embodiments merely illustrate some embodiments of the present application, and descriptions thereof are relatively specific and detailed. However, it should not be understood as a limitation to the patent scope of the present application. It should be noted that, a person of ordinary skill in the art may further make some variations and improvements without departing from the concept of the present application, and the variations and improvements falls in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A linked foldable mechanism, comprising a first rod (10), a second rod (20), a driving member (200), and a driven member (300); wherein the driving member (200) is fixed on the first rod (10); the driving member (200) comprises a first gear teeth portion (210); the driven member (300) is fixed on the second rod (20); the driven member (300) comprises a second gear teeth portion (310); and the first gear teeth portion (210) is engaged with the second gear teeth portion (310).

2. The linked foldable 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. The linked foldable mechanism according to claim 1 or 2, further comprising a gear housing (400); wherein the gear housing (400) is pivotally connected to the first rod (10) and covers an outside of the first gear teeth portion (210); the gear housing (400) comprises an engagement opening (411) facing the second gear teeth portion (310); and the second gear teeth portion (310) is engaged with the first gear teeth portion (210) through the engagement opening (411).

4. The linked foldable mechanism according to claim 3, wherein the gear housing (400) further comprises an engagement hole (412); the driving member (200) is fixed to an 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 engagement hole (412); a hole wall of the engagement hole (412) has a first side and a second side that are opposite to each other; wherein, when the first rod (10) is rotated to abut against the first side, an included angle between the first rod (10) and the second rod (20) is the smallest; and when the first rod (10) is rotated to abut against the second side, an included angle between the first rod (10) and the second rod (20) is the largest.

5. The linked foldable mechanism according to claim 3 or 4, wherein the gear housing (400) comprises a housing body (450) and a housing cover (460); the housing cover (460) is detachably covered on a side of the housing body (450) facing the second gear teeth portion (310); and the engagement opening (411) is defined on the housing cover (460).

6. A children’s carrier, comprising: a frame supporting structure (100) comprising a backrest supporting rod (150) and a seat supporting rod (120); a driving member (200) fixed on the seat supporting rod (120) and comprising a first gear teeth portion (210); and a driven member (300) fixed on the backrest supporting rod (150) and comprising a second gear teeth portion (310); wherein the first gear teeth portion (210) is engaged with the second gear teeth portion (310).

7. The children’s carrier according to claim 6, wherein the frame supporting structure (100) further comprises a handle assembly (110); wherein the handle assembly (110) comprises a first handle supporting rod (111), a second handle supporting rod (112), an operating member (113), and a locking mechanism (114); wherein the first handle supporting rod (111) is pivotally connected to the second handle supporting rod (112) by the locking mechanism (114); 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 supporting rod (111) and the second handle supporting rod (112) are switched between a state of being fixed relative to each other and a state of being rotated relative to each other.

8. The children’s carrier according to claim 7, wherein the frame supporting structure (100) further comprises a first linkage (160); wherein the second handle supporting rod (112) and the seat supporting rod (120) are pivotally connected to the first linkage (160) at different locations, respectively.

9. The children’s carrier according to claim 8, further comprising a gear housing (400); wherein the gear housing (400) is pivotally connected to the seat supporting rod (120) and covers an outside of the first gear teeth portion (210); wherein the gear housing (400) comprises an engagement opening (411) facing the second gear teeth portion (310); wherein the second gear teeth portion (310) is engaged with the first gear teeth portion (210) through the engagement opening (411); wherein the first linkage (160) has an L-shaped structure; an apex of the L-shaped structure is fixed on the gear housing (400); an end of the L-shaped structure away from the apex is pivotally connected to the seat supporting rod (120), and the other end of the L-shaped structure away from the apex is pivotally connected to the second handle supporting rod (H2).

10. The children’s carrier according to any of the claims 7 to 9, wherein the frame supporting structure (100) further comprises a rear feet supporting rod (130) and a second linkage (170); wherein an end of the second linkage (170) is pivotally connected to the seat supporting rod (120), and the other end of the second linkage (170) is pivotally connected to the rear feet supporting rod (130) and the second handle supporting rod (112).

18

11. The children’s carrier according to any of the claims 6 to 10, wherein the frame supporting structure (100) further comprises a front feet assembly (140); and the front feet assembly (140) is pivotally connected to the seat supporting rod (120).

12. The children’s carrier according to claim 11 in combination with claim 10, wherein the front feet assembly (140) comprises a first front feet supporting rod (141), a front feet connecting member (142), and a second front feet supporting rod (143) that are pivotally connected in sequence; wherein an end of the first front feet supporting rod (141) away from the front feet connecting member (142) is pivotally connected to the first handle supporting rod (111); the front feet connecting member (142) is fixedly connected to the rear feet supporting rod (130) at an included angle; and the second front feet supporting rod (143) is pivotally connected to the seat supporting rod (120).

13. The children’s carrier according to any of the claims 6 to 12, further comprising a seat plate (500); wherein the seat plate (500) is fixed on the seat supporting rod (120).

14. The children’s carrier according to claim 13, wherein there are two frame supporting structures (100); the seat supporting rods (120) of the two frame supporting structures (100) are respectively fixed on left and right sides of the seat plate (500); there are two driving members (200) and two driven members (300); wherein the two driving members (200) and two driven members (300) are configured to realize a linked folding between the seat supporting rods (120) and the backrest supporting rods (150) of the two frame supporting structures (100), respectively.

15. The children’s carrier according to claim 14, further comprising an extension plate (600); wherein a front side of the extension plate (600) is pivotally connected to a rear side of the seat plate (500); two ends of a rear side of the extension plate (600) are fixed to the

19 backrest supporting rods (150) of the two frame supporting structures (100), respectively.

16. The children’s carrier according to any one of claims 6 to 15, further comprising a backrest adjusting structure (180); wherein the backrest adjusting structure (180) comprises an adjusting member (181), a rotating base (182), a driving block (183), a gear (184), and an elastic member (185); wherein the driven member (300) is provided with a first gear groove (340) that is engaged with the gear (184); wherein the driven member (300), the gear (184), and the rotating base (182) are pivotally connected coaxially; the backrest supporting rod (150) is fixed on the rotating 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 the adjusting member (181) is configured to drive the driving block (183) to drive the gear (184) out of the first gear groove (340).

20