1. A one-handed opening and closing mechanism, comprising:

a handle assembly;

the shell is provided with a through hole for the handle assembly to move and is used for being arranged on a main shaft of the trolley main body;

the locking assembly comprises a first locking piece and a second locking piece, the first locking piece is used for being rotatably sleeved on the main shaft and is used for being connected with the rear leg assembly, the second locking piece is used for being arranged on the trolley main body, and when the second locking piece is matched and connected with the first locking piece, the rear leg assembly can be limited to rotate relative to the trolley main body;

the transmission mechanism is in transmission connection with the second locking piece, and when the handle assembly moves to a first position in the through hole, the transmission mechanism can be triggered to act so as to drive the second locking piece to move away from the first locking piece along the axis direction of the main shaft and be disengaged from the first locking piece.

2. The one-hand opening and closing mechanism according to claim 1, wherein the handle assembly comprises a first locking member, a first movable rod and a second movable rod slidably sleeved outside the first movable rod, the second movable rod is slidably inserted into the through hole, the first locking member is disposed on the housing and is in locking engagement with the second movable rod, and when the first movable rod moves to a second position in the second movable rod, the first locking member and the second movable rod can be disengaged and the second movable rod can be driven to move together to the first position.

3. The one-handed opening and closing mechanism according to claim 2, wherein the handle assembly further comprises a second locking member and a handle lever connected to the first movable lever, the first movable lever is locked and engaged with the second movable lever through the second locking member, the handle lever is provided with an unlocking member in transmission engagement with the second locking member, and the unlocking member is capable of controlling the unlocking between the second locking member and the second movable lever when in operation.

4. The one-handed opening and closing mechanism according to claim 2, wherein the second movable rod is provided with a locking hole, the first locking member partially extends into the locking hole to be coupled with the second movable rod, and the first locking member can be ejected out of the locking hole when the first movable rod moves to the second position.

5. The single-hand opening and closing mechanism according to claim 1, wherein the transmission mechanism includes a first transmission member, a second transmission member and a trigger member disposed on the first transmission member, the first transmission member and the second transmission member are in transmission fit and are both used for being sleeved on the main shaft, the second transmission member is in transmission connection with the second locking member, and when the handle assembly moves to the first position, the handle assembly abuts against the trigger member and can drive the first transmission member to move.

6. The single-handed opening and closing mechanism according to claim 5, wherein the first transmission member has a first transmission surface, the first transmission surface is disposed obliquely with respect to the moving direction of the handle assembly in the through hole, the second transmission member has a second transmission surface engaged with the first transmission surface, and the first transmission surface can push the second locking member to move along the axial direction of the spindle when the handle assembly is further moved from the first position.

7. The one-handed opening and closing mechanism according to claim 5, wherein the transmission mechanism comprises a limiting member for being mounted on the cart body, and the first transmission member is slidably mounted on the limiting member.

8. The one-handed opening and closing mechanism according to claim 7, wherein the retaining member has a sliding slot extending along a moving direction of the handle assembly in the through hole, and the first transmission member is slidably fitted into the sliding slot.

9. The one-handed opening and closing mechanism according to any one of claims 1 to 8, wherein said locking assembly further comprises a first elastic member, a second elastic member, and a movable pin, wherein one end of said first elastic member is connected to said second locking member, the other end of said first elastic member is used for connecting to said stroller body, said movable pin is used for connecting to said stroller body through said second elastic member, said movable pin is in interference fit with said first locking member, and a side surface of said first locking member facing said second locking member is provided with a groove; when the first locking piece rotates to a half-folding station, the movable pin is inserted into the groove; when the first locking piece continues to rotate, the movable pin can slide out of the groove.

10. A stroller, comprising a stroller body, a front leg assembly, a rear leg assembly and the one-hand opening and closing mechanism of any one of claims 1 to 9, wherein the front leg assembly is fixed to the stroller body, the stroller body is provided with a main shaft, the first locking member is rotatably sleeved on the main shaft, and the rear leg assembly is fixed to the first locking member.

Background

The baby stroller is a bearing moving tool designed for babies (or young children), and is also a necessity for adults to carry babies to play or shop outside.

At present, many children's carts are available at home and abroad, the types of products are different, and along with the increasing demand of families at home and abroad on the use of the children's carts, adults pay attention to whether the structural quality of the carts reaches the standard or not and whether the appearances of the carts meet the aesthetic value or not, and have higher requirements on the problems of carrying, folding, opening and the like of the carts.

However, in the current folding mode, the folding and unfolding actions of the stroller can be completed by operating both hands of the user at the same time, and the subsequent folding steps are complicated and inconvenient to carry after folding.

Disclosure of Invention

Therefore, there is a need for a single-hand opening and closing mechanism and a stroller, which can be conveniently and quickly folded by only one hand, reduce the space occupied by the folded stroller, and is convenient to carry.

A one-handed opening and closing mechanism comprising:

a handle assembly;

the shell is provided with a through hole for the handle assembly to move and is used for being arranged on a main shaft of the trolley main body;

the locking assembly comprises a first locking piece and a second locking piece, the first locking piece is used for being rotatably sleeved on the main shaft and is used for being connected with the rear leg assembly, the second locking piece is used for being arranged on the trolley main body, and when the second locking piece is matched and connected with the first locking piece, the rear leg assembly can be limited to rotate relative to the trolley main body;

the transmission mechanism is in transmission connection with the second locking piece, and when the handle assembly moves to a first position in the through hole, the transmission mechanism can be triggered to act so as to drive the second locking piece to move away from the first locking piece along the axis direction of the main shaft and be disengaged from the first locking piece.

Compared with the background art, the single-hand opening and closing mechanism has the beneficial effects that: when the baby stroller is folded, the handle assembly is pushed to move to the first position in the through hole of the shell, the transmission mechanism in transmission connection with the second locking piece can be triggered to act, so that the second locking piece is driven to move away from the first locking piece along the axial direction of the main shaft and is separated from and matched with the first locking piece. Therefore, an operator can control the matching or the disconnection of the first locking piece and the second locking piece only by controlling the position of the handle assembly in the through hole so as to control the opening and closing state of the single-hand opening and closing mechanism, and the cart can be folded conveniently and quickly by only one hand. In addition, when the handle assembly moves to the first position to unlock the locking assembly, the rear leg assembly connected to the first locking member can rotate relative to the stroller main body, so that the rear leg assembly can be folded relative to the stroller main body, and the space occupied by the whole stroller is reduced. So, the position of control handle subassembly in the perforation, can the singlehanded unblock of synchronous realization foretell with folding, convenient operation and high efficiency, further reduce to know and remove the shared space of joining in marriage the whole singlehanded mechanism that opens and shuts of joining in marriage back, portable.

In one embodiment, the handle assembly includes a first locking member, a first movable rod, and a second movable rod slidably sleeved outside the first movable rod, the second movable rod is slidably disposed in the through hole, the first locking member is disposed on the housing and is in locking engagement with the second movable rod, and when the first movable rod moves to a second position within the second movable rod, the first locking member can be disengaged from the second movable rod, and the second movable rod can be driven to move together to the first position.

In one embodiment, the handle assembly further comprises a second locking member and a handle rod connected with the first movable rod, the first movable rod is in locking fit with the second movable rod through the second locking member, an unlocking member in transmission fit with the second locking member is arranged on the handle rod, and when the unlocking member is operated, the unlocking member can control the second locking member and the second movable rod to release locking.

In one embodiment, the second movable rod is provided with a locking hole, the first locking piece partially extends into the locking hole to realize the matching connection of the first locking piece and the second movable rod, and the first locking piece can be ejected out of the locking hole when the first movable rod moves to the second position.

In one embodiment, the transmission mechanism includes a first transmission member, a second transmission member, and a trigger member disposed on the first transmission member, the first transmission member is in transmission fit with the second transmission member and both used for being sleeved on the spindle, the second transmission member is in transmission connection with the second locking member, and when the handle assembly moves to the first position, the handle assembly abuts against the trigger member and can drive the first transmission member to move.

In one embodiment, the first transmission member is provided with a first transmission surface, the first transmission surface is obliquely arranged relative to the moving direction of the handle assembly in the through hole, the second transmission member is provided with a second transmission surface matched with the first transmission surface, and the first transmission surface can push the second locking member to move along the axial direction of the spindle when the handle assembly is continuously moved from the first position.

In one embodiment, the transmission mechanism includes a limiting member, the limiting member is configured to be mounted on the cart body, and the first transmission member is slidably mounted on the limiting member.

In one embodiment, the one-handed opening and closing mechanism comprises any one of the above-mentioned opening and closing mechanisms, and the locking assembly further comprises a first elastic member, one end of the first elastic member is connected to the second locking member, and the other end of the first elastic member is used for being connected to the cart main body.

In one embodiment, the one-handed opening and closing mechanism comprises any one of the above-mentioned one-handed opening and closing mechanisms, the locking assembly further comprises a second elastic member and a movable pin, the movable pin is used for being connected to the cart body through the second elastic member, the movable pin is in interference fit with the first locking member, and a side surface of the first locking member facing the second locking member is provided with a groove; when the first locking piece rotates to a half-folding station, the movable pin is inserted into the groove; when the first locking piece continues to rotate, the movable pin can slide out of the groove.

The utility model provides a baby stroller, includes shallow main part, foreleg subassembly, hind leg subassembly and foretell one-hand mechanism that opens and shuts, the foreleg subassembly is fixed on the shallow main part, be equipped with the main shaft in the shallow main part, first locking piece rotates the cover and locates on the main shaft, the hind leg subassembly is fixed on the first locking piece.

Compared with the background art, the baby stroller has the beneficial effects that: when the baby stroller is folded, the handle assembly is pushed to move to the first position in the through hole of the shell, the transmission mechanism in transmission connection with the second locking piece can be triggered to act, so that the second locking piece is driven to move away from the first locking piece along the axial direction of the main shaft and is separated from and matched with the first locking piece. Therefore, an operator can control the matching or the disconnection of the first locking piece and the second locking piece only by controlling the position of the handle assembly in the through hole so as to control the opening and closing state of the single-hand opening and closing mechanism, and the cart can be folded conveniently and quickly by only one hand. In addition, when the handle assembly moves to the first position to unlock the locking assembly, the rear leg assembly connected to the first locking member can rotate relative to the stroller main body, so that the rear leg assembly can be folded relative to the stroller main body, and the space occupied by the whole stroller is reduced. So, the position of control handle subassembly in the perforation, can the singlehanded unblock of synchronous realization foretell with folding, convenient operation and high efficiency, further reduce to know and remove the shared space of joining in marriage the whole singlehanded mechanism that opens and shuts of joining in marriage back, portable.

Drawings

FIG. 1 is a schematic illustration of a stroller in a locked position according to one embodiment;

FIG. 2 is an exploded view of the stroller in a locked position in accordance with one embodiment;

FIG. 3 is an enlarged view of the structure at circle A in FIG. 2;

FIG. 4 is a schematic view of an exemplary embodiment of an assembly of the handle assembly and the housing;

FIG. 5 is an exploded view of the handle assembly and a portion of the transmission mechanism in one embodiment;

FIG. 6 is a schematic view of an assembly structure of the transmission assembly and the second locking member according to an embodiment;

FIG. 7 is an exploded view of the transmission assembly and the second locking member according to one embodiment;

FIG. 8 is a schematic view of the first locking member in one embodiment;

FIG. 9 is a schematic view of the first movable bar of the stroller shown in one embodiment shown in a second position;

FIG. 10 is a schematic view of the handle assembly of the stroller shown in one embodiment shown in a first position;

FIG. 11 is a schematic view of the stroller shown in a semi-collapsed configuration in accordance with one embodiment;

fig. 12 is a schematic view of the stroller in one embodiment in a fully collapsed position.

Description of reference numerals:

1. a baby stroller; 10. a single-handed opening and closing mechanism; 100. a handle assembly; 110. a first movable bar; 111. a collision member; 120. a second movable bar; 121. a locking hole; 130. a first locking member; 131. a third elastic member; 140. a second lock; 150. a handle bar; 151. opening the locking piece; 200. a housing; 210. perforating; 300. a locking assembly; 310. a first locking member; 311. a first alignment portion; 312. a groove; 320. a second locking member; 321. a second aligning part; 330. a first elastic member; 340. a second elastic member; 341. a movable pin; 400. a transmission mechanism; 410. a first transmission member; 411. a first drive face; 412. a movable groove; 420. a second transmission member; 421. a second transmission surface; 430. a trigger; 440. a limiting member; 441. a chute; 500. a cart body; 510. a main shaft; 600. a rear leg assembly; 700. a front leg assembly.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In one embodiment, referring to fig. 1 and 10, a one-handed opening and closing mechanism 10 includes a handle assembly 100, a housing 200, a locking assembly 300, and a transmission mechanism 400. The housing 200 is provided with a through hole 210 for moving the handle assembly 100 and is installed on the main shaft 510 of the cart body 500. The locking assembly 300 includes a first locking member 310 and a second locking member 320. The first locking member 310 is rotatably sleeved on the main shaft 510 and is used for connecting the rear leg assembly 600. The second locking member 320 is provided to the cart body 500. The second locking member 320, when mated with the first locking member 310, limits the rotation of the rear leg assembly 600 relative to the stroller body 500. The transmission mechanism 400 is in transmission connection with the second locking member 320. The handle assembly 100 can trigger the actuator 400 to actuate when moved to the first position within the aperture 210. To drive the second locking member 320 to move away from the first locking member 310 along the axial direction of the main shaft 510 and disengage from the first locking member 310.

The above-mentioned one-handed opening and closing mechanism 10, when the stroller 1 is folded, pushes the handle assembly 100 to move to the first position in the through hole 210 of the housing 200, and triggers the transmission mechanism 400 in transmission connection with the second locking member 320 to move the second locking member 320 away from the first locking member 310 along the axial direction of the main shaft 510, and disengage from the first locking member 310. Therefore, an operator can control the coupling or decoupling of the first locking member 310 and the second locking member 320 by controlling the position of the handle assembly 100 in the through hole 210, so as to control the opening and closing state of the one-handed opening and closing mechanism 10, thereby conveniently and quickly folding the stroller with only one hand. In addition, when the handle assembly 100 moves to the first position to unlock the locking assembly 300, the rear leg assembly 600 connected to the first locking member 310 can rotate relative to the stroller main body 500, so that the rear leg assembly 600 can be folded relative to the stroller main body 500, and the space occupied by the entire stroller 1 can be reduced. Thus, the handle assembly 100 is controlled to be positioned in the through hole 210, so that the unlocking and folding can be synchronously realized by one hand, the operation is convenient and efficient, the occupied space of the whole one-hand opening and closing mechanism 10 after the removal of the matched connection is further reduced, and the carrying is convenient.

The number of the one-hand opening and closing mechanisms 10 may be one or two. When the number of the one-hand opening and closing mechanisms 10 is one, the stroller 1 has a rear leg assembly 600; when the number of the one-hand opening and closing mechanisms 10 is two, two one-hand opening and closing mechanisms 10 are respectively located at two opposite sides of the stroller main body 500, and the stroller 1 has two rear leg assemblies 600.

It should be noted that the angle between the hole depth direction of the through hole 210 (i.e. the moving direction of the handle assembly 100 in the through hole 210) and the axial direction of the main shaft 510 may be determined according to actual needs, such as: the included angle between the depth direction of the through hole 210 and the axial direction of the main shaft 510 may be any angle within 0 to 180 degrees. To facilitate understanding of the first direction of the spindle 510, taking fig. 1 as an example, the axial direction of the spindle 500 is the direction indicated by any arrow S in fig. 1.

Specifically, in the present embodiment, the angle between the hole depth direction of the through hole 210 and the axial direction of the main shaft 510 is 90 °.

Further, referring to fig. 3 and 8, the first locking member 310 has a first positioning portion 311. The second locking member 320 has a second positioning portion 321. When the second locking element 320 is coupled to the first locking element 310, the second positioning portion 321 is engaged with the first positioning portion 311, such that the second locking element 320 and the first locking element 310 cannot rotate relatively. When the second locking element 320 is disengaged from the first locking element 310, the second locking element 320 is separated from the first locking element 310, and the first positioning portion 311 is disengaged from the second positioning portion 321, such that the second locking element 320 and the first locking element 310 can rotate relatively.

Optionally, the first positioning portion 311 has a convex structure, and the second positioning portion 321 has a groove or hole structure; or the first positioning portion 311 is a groove or hole structure, and the second positioning portion 321 is a convex structure. Specifically, in the present embodiment, the first positioning portion 311 has a groove-shaped structure, and the second positioning portion 321 has a convex structure.

It should be noted that the installation of the second lock 320 on the cart main body 500 is understood as follows: the second lock 320 is movable relative to the cart main body 500 in the axial direction of the main shaft 510, but is not rotatable relative to the cart main body 500. For example: the cart body 500 is provided with a mounting groove (not shown) for moving the second locking member 320 along the axial direction of the main shaft 510. The groove wall of the mounting groove cooperates with the second locking member 320 to limit the second locking member 320 from rotating relative to the cart body 500, wherein the mounting groove may have a polygonal shape or a special-shaped groove (e.g., a plum blossom-shaped groove or a gear-shaped groove).

Optionally, the second locking member 320 may be sleeved on the main shaft 510, or may move in a direction parallel to the axial direction of the main shaft 510, but is not sleeved on the main shaft 510. Specifically, in the present embodiment, the second locking member 320 is sleeved on the main shaft 510.

In one embodiment, referring to fig. 1 and 5, the handle assembly 100 includes a first locking member 130, a first movable rod 110, and a second movable rod 120 slidably sleeved outside the first movable rod 110. The second movable rod 120 is slidably sleeved in the through hole 210. The first locking member 130 is disposed on the housing 200 and is locked and engaged with the second movable bar 120. When the first movable rod 110 moves to the second position in the second movable rod 120, the first locking member 130 can be disengaged from the second movable rod 120, and the second movable rod 120 can be driven to move to the first position. Therefore, when the one-handed opening and closing mechanism 10 is applied to the stroller 1, please refer to fig. 9, the first movable rod 110 is pushed to move to the second position in the second movable rod 120, and the release of the coupling between the first locking member 130 and the second movable rod 120 is triggered. At this time, when the second movable rod 120 is in the movable state in the through hole 210, i.e. the first movable rod 110 is continuously pushed, referring to fig. 10, the second movable rod 120 is driven to move together, so that the second movable rod 120 moves to the first position in the through hole 210, to further trigger the release of the coupling between the first locking member 310 and the second locking member 320, and further enable the rear leg assembly 600 to rotate and fold on the stroller body 500. Therefore, in the folding process of the single-hand opening and closing mechanism 10, the folding of the handle assembly 100 and the rotating folding of the rear leg assembly 600 can be completed only by pushing the first movable rod 110, which greatly facilitates the folding operation of the stroller 1 and effectively improves the usability of the product.

It is understood that when the first movable bar 110 moves to the second position within the second movable bar 120, the first movable bar 110 may partially extend into the second movable bar 120 or may fully extend into the second movable bar 120. Meanwhile, the relationship between the second position and the first position is understood as: in the folding process, the first movable bar 110 is pushed, the position that the first movable bar 110 reaches first is the second position, and the position that the second movable bar reaches later is the first position, that is, the second position is at the front end of the first position in the pushing direction of the first movable bar 110.

Specifically, in the present embodiment, when the first movable bar 110 moves to the second position in the second movable bar 120, the first movable bar 110 extends into the second movable bar 120. Therefore, the space occupied by the whole one-hand opening and closing mechanism 10 after the mating is released can be reduced to the maximum extent, and the portable folding device is convenient to carry.

Further, referring to fig. 5, the handle assembly 100 further includes a second locking member 140 and a handle bar 150 connected to the first movable bar 110. The first movable lever 110 is lockingly engaged with the second movable lever 120 by the second locking member 140. The handle lever 150 is provided with an unlocking member 151 drivingly engaged with the second locking member 140. When the unlocking member 151 is actuated, the locking between the first movable bar 110 and the second movable bar 120 can be controlled to be released.

Therefore, by operating the unlocking member 151 of the handle lever 150, the locking between the second locking member 140 and the second movable lever 120 can be released, so that the first movable lever 110 and the second movable lever 120 are unlocked, and the first movable lever 110 can move in the second movable lever 120. After unlocking, the handle lever 150 is pushed to move the first movable lever 110 to the second position in the second movable lever 120, and the first lock 130 and the second movable lever 120 are unlocked, thereby unlocking the second movable lever 120 and the housing 200. Continuing to push the handle bar 150, the first movable bar 110 and the second movable bar 120 can be moved together to the first position, so as to disengage the second locking member 320 from the first locking member 310 in the locking assembly 300, and finally, the entire one-handed opening and closing mechanism 10 is folded.

Specifically, a wire (not shown) is provided between the unlocking member 151 and the second locking member 140. When the locking member 151 is pressed, the cable drives the second locking member 140 to disengage from the second movable rod 120. At the moment, the first movable rod and the second movable rod are unlocked.

It will be appreciated that the first movable bar 110 may partially enter the cavity of the second movable bar 120 or may fully enter the cavity of the second movable bar 120 when the handle assembly 100 is moved to the first position.

Specifically, in the present embodiment, when the handle assembly 100 is moved to the first position, the first movable bar 110 is fully inserted into the cavity of the second movable bar 120, and the handle bar 150 is in contact with the second movable bar 120.

Alternatively, the unlocking member 151 may control the second locking member 140 by a connection rope, a connection buckle, or the like, to control locking and unlocking between the first and second movable levers 110 and 120. The second locking member 140 has a convex structure.

Further, referring to fig. 5, the second movable rod 120 is provided with a locking hole 121. The first locking member 130 partially protrudes into the locking hole 121 to be coupled with the second movable bar 120. When the first movable lever 110 is moved to the second position, the first locking member 130 can be ejected out of the locking hole 121. As such, unlocking of the second movable bar 120 on the housing 200 is facilitated.

In one embodiment, referring to fig. 4 and 5, an end of the first movable bar 110 closer to the housing 200 is provided with a collision member 111. A third elastic member 131 is disposed between the first locking member 130 and the housing 200. The third elastic member 131 serves to provide an elastic force for the first locking member 130 to be inserted into the locking hole 121. The collision member 111 serves to lock the hole 121 at the top of the first locking member 130.

It can be understood that when the first movable bar 110 is not moved to the second position in the cavity of the second movable bar 120, the first locking member 310 is supported by the elastic force of the third elastic member 131, and partially extends into the locking hole 121 formed in the second movable bar 120. At this time, the first locking member 130 is coupled to the second movable bar 120, that is, the second movable bar 120 is in a locked state with the housing 200. When the first movable bar 110 moves to the second position within the cavity of the second movable bar 120, the striker 111 on the first movable bar 110 ejects the first latch 130 out of the latch aperture 121. At this time, the first locking member 130 is disengaged from the second movable rod 120, that is, the second movable rod 120 is in an unlocked state in the cavity of the housing 200.

Alternatively, the third elastic element 131 and the first locking element 310 may be fixedly connected by gluing, welding, clamping, etc. Specifically, in the present embodiment, the third elastic member 131 is fixed to the movable member by gluing

Alternatively, an end of the first locking member 310 contacting the first movable bar 110 may be a slope or a curved surface.

Specifically, in the present embodiment, one end of the movable member contacting the first movable rod 110 is an inclined surface.

Of course, in other embodiments, a magnet structure with the same magnetism may be disposed between the first locking member 130 and the housing 200, and the first locking member 130 will be automatically inserted into the locking hole 121 by using the principle that the same magnetic poles repel each other.

In one embodiment, referring to fig. 3, the transmission mechanism 400 includes a trigger 430, a first transmission member 410, and a second transmission member 420. The first transmission member 410 and the second transmission member 420 are both used for being sleeved on the main shaft 510. The second transmission member 420 is in transmission connection with the second locking member 140 and can move along the axial direction of the main shaft 510. The trigger 430 is disposed on the first transmission member 410. When the handle assembly 100 moves to the first position, it abuts against the triggering member 430 and drives the first transmission member 410 to move.

It can be appreciated that when the first movable bar 110 moves the second movable bar 120 to the first position, the handle assembly 100 begins to interfere with the trigger 430 and moves the trigger 430 continuously. During the continuous movement of the trigger 430, the trigger 430 drives the first transmission member 410 to move, and the first transmission member 410 drives the second transmission member 420 to move in the axial direction of the spindle 510.

It should be noted that the transmission cooperation between the first transmission member 410 and the second transmission member 420 can be realized by a gear and rack combination structure, a pushing structure, or the like. When a gear and rack combination structure is disposed between the first transmission member 410 and the second transmission member 420, the first transmission member 410 can drive the intermediate gear to rotate when moving along with the second movable rod 120. After the gear rotates, the rack can be driven to move along the axis direction of the main shaft 510, and then the second transmission member 420 is driven to move.

In addition, the transmission connection between the second transmission member 420 and the second locking member 320 may be a fixed connection or a separable connection (for example, the second transmission member 420 abuts against the second locking member 320).

In one embodiment, referring to fig. 3 and 7, the first transmission member 410 is provided with a first transmission surface 411. The first driving surface 411 is disposed obliquely with respect to the moving direction of the handle assembly 100 in the through hole 210. The second transmission member 420 is provided with a second transmission surface 421 matching with the first transmission surface 411. When the handle assembly 100 is moved from the first position, the first transmission surface 411 can push the second locking member 320 to move along the axial direction of the main shaft 510. In this way, when the first locking member 310 and the second locking member 320 are locked, the first transmission surface 411 is tilted to skillfully convert the thrust along the hole depth direction of the through hole 210 into the thrust along the axial direction of the main shaft 510, so that the second locking member 320 can be stably moved on the main shaft 510 by the movement of the second movable rod 120, and a stable and effective unlocking action is realized.

Further, referring to fig. 6 and 7, the second driving surface 421 is disposed on the first driving surface 420 in an inclined manner, and an inclined gradient of the second driving surface 421 is consistent with an inclined gradient of the first driving surface 411, that is, the second driving surface 421 can be attached to the first driving surface 411.

In one embodiment, referring to fig. 6, the first transmission member 410 is provided with a movable slot 412 for receiving the main shaft 510. The movable slot 412 is used to allow the first transmission member 410 to move together with the handle member on the main shaft 510, i.e. the movable slot 412 is provided on the first transmission member 410 to extend along the moving direction of the handle assembly 100 in the through hole 210.

Specifically, the movable slot 412 is a kidney-shaped slot design on the first transmission piece 410.

It can be understood that when the first transmission member 410 is driven by the handle assembly 100 to move along the hole depth direction of the through hole 210, the first transmission member 410 drives the second transmission member 420 to move along the axial direction of the main shaft 510 through the transmission engagement between the first transmission surface 411 and the second transmission surface 421. Therefore, the first transmission surface 411 is disposed obliquely so that the first transmission member 410 can push the second transmission member 420 in the axial direction of the main shaft 510 to unlock the first locking member 310 and the second locking member 320 in the axial direction of the shaft of the main shaft 510.

In one embodiment, referring to fig. 2, the transmission mechanism 400 includes a limiting member 440. The limiting member 440 is used to be mounted on the cart body 500. The first transmission member 410 is slidably mounted on the limiting member 440. Thus, the limiting member 440 is mounted on the main shaft 510 and is fixedly connected to the housing 200, so as to limit the first transmission member 410 in the housing 200.

Further, referring to fig. 3, a sliding groove 441 is disposed on the limiting member 440. The slide groove 441 is disposed to extend along a moving direction of the handle assembly 100 in the through hole 210. The first transmission member 410 is slidably fitted into the sliding groove 441. Thus, the first transmission member 410 is driven by the handle assembly 100 to move more stably by the constraint of the sliding groove 441, so that the transmission of the force between the first transmission member 410 and the second transmission member 420 is smoother.

It will be appreciated that the maximum travel of the first transmission member 410 in the direction of movement of the handle assembly 100 in the aperture 210 is the maximum distance that the slide groove 441 extends in the direction of movement of the handle assembly 100 in the aperture 210.

In one embodiment, referring to fig. 2 and 3, the locking assembly 300 further includes a first elastic member 330. One end of the first elastic member 330 is connected to the second locking member 320. The other end of the first elastic member 330 is adapted to be connected to the cart body 500.

It can be understood that when the second locking member 320 is coupled to the first locking member 310, the first elastic member 330 applies a pushing force to the second locking member 320 in a direction approaching to the first locking member 310, so that the second locking member 320 is coupled to the first locking member 310 without interference from external force. When the handle assembly 100 is moved to the first position and the handle assembly 100 is further pushed to move along the hole depth of the through hole 210, the second transmission member 420 will give a pushing force to the second locking member 320 in a direction away from the first locking member 310. If the pushing force of the second transmission member 420 to the second locking member 320 in the direction away from the first locking member 310 is greater than the pushing force of the first elastic member 330 to the second locking member 320 in the direction close to the first locking member 310, the second locking member 320 will move away from the first locking member 310 under the driving of the second transmission member 420 until the second locking member is disengaged from the first locking member 310.

Further, referring to fig. 2 and 3, the locking assembly 300 further includes a second elastic member 340 and a movable pin 341. The movable pin 341 is in interference fit with the first locking member 310 through the second elastic member 340, and a groove 312 is formed on a side surface of the first locking member 310 facing the second locking member 320. As can be appreciated, when the first locking member 310 is rotated to the semi-collapsed position, the movable pin 341 is inserted into the groove 312; as the first locking member 310 continues to rotate, the moveable pin 341 can slide out of the groove 312. Namely: when the first locking member 310 and the second locking member 320 are just disengaged, the first locking member 310 can rotate around the main shaft 510 axis relative to the cart body 500: when the first locking member 310 rotates for one station, the movable pin 341 is inserted into the groove 312 under the action of the second elastic member 340, and at this time, the first locking member 310 and the second locking member 320 are in a semi-folded state, please refer to fig. 11; when the first locking member 310 continues to rotate around the axis of the main shaft 510 relative to the cart body 500, the first locking member 310 drives the groove 312 formed thereon to rotate relative to the movable pin 341 until the movable pin 341 slides out of the groove 312, and at this time, the first locking member 310 and the second locking member 320 are in a fully unlocked state, please refer to fig. 12.

Further, the bottom of the groove 312 is a bevel or a semicircle. The end of the movable pin 341 that interfaces with the groove 312 has the same shape as the bottom of the groove 312. Therefore, the movable pin 341 can easily slide out from the inside of the groove 312 when the first locking member 310 rotates about the main shaft 510 axis with respect to the cart main body 500. The one-handed opening and closing mechanism 10 can be further folded conveniently.

Alternatively, the first elastic member 330, the second elastic member 340, and the third elastic member 131 may be springs, elastic rubber, elastic metal sheets, or the like. Specifically, in the present embodiment, the first elastic member 330, the second elastic member 340, and the third elastic member 131 are all springs.

In one embodiment, referring to fig. 1, 9-12, a stroller 1 includes a stroller body 500, a front leg assembly 700, a rear leg assembly 600, and a one-handed opening and closing mechanism 10. The front leg assembly 700 is fixed to the cart body 500. The cart body 500 is provided with a main shaft 510. The first locking member 310 is rotatably sleeved on the main shaft 510. The rear leg assembly 600 is secured to the first locking member 310.

In the stroller 1, when the handle assembly 100 is pushed to move to the first position in the through hole 210 of the housing 200 during the collapsing process of the stroller 1, the transmission mechanism 400 in transmission connection with the second locking member 320 is triggered to move, so as to drive the second locking member 320 to move away from the first locking member 310 along the axial direction of the main shaft 510 and disengage from the first locking member 310. Therefore, an operator can control the coupling or decoupling of the first locking member 310 and the second locking member 320 by controlling the position of the handle assembly 100 in the through hole 210, so as to control the opening and closing state of the one-handed opening and closing mechanism 10, thereby conveniently and quickly folding the stroller with only one hand. In addition, when the handle assembly 100 moves to the first position to unlock the locking assembly 300, the rear leg assembly 600 connected to the first locking member 310 can rotate relative to the stroller main body 500, so that the rear leg assembly 600 can be folded relative to the stroller main body 500, and the space occupied by the entire stroller 1 can be reduced. Thus, the handle assembly 100 is controlled to be positioned in the through hole 210, so that the unlocking and folding can be synchronously realized by one hand, the operation is convenient and efficient, the occupied space of the whole one-hand opening and closing mechanism 10 after the removal of the matched connection is further reduced, and the carrying is convenient.

Further, wheels are mounted on both rear leg assembly 600 and front leg assembly 700.

In addition, when the first locking member 310 and the second locking member 320 are in the half-folded state, the movable pin 341 rotates to the groove 312 and is clamped with the groove, and at this time, the front leg assembly 700 and the rear leg assembly 600 are in the half-folded state. The wheels on rear leg assembly 600 and front leg assembly 700 may both be in contact with the ground. The operator can push the handle lever 150 to push the stroller 1 in the semi-collapsed state to move on the ground. When the first locking member 310 and the second locking member 320 are in the fully unlocked state, the stroller 1 of the present embodiment is in the fully folded state, occupies a minimum space, and is suitable for stationary storage.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," "mated" and the like are to be construed broadly and can, for example, be fixedly connected, releasably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.