Baby carriage capable of being folded automatically

Abstract

The utility model discloses a baby carriage capable of being folded automatically, which adopts the technical scheme that a carriage frame, a seat and an unlocking mechanism used for driving the carriage frame and the seat to be unlocked synchronously are arranged to achieve the purpose of folding the baby carriage conveniently, and when a handle upper tube moves along a handle lower tube and falls down to a collision component to collide, the baby carriage can be folded automatically. When the handle pipe moves downwards in the folding process, the collision assembly collides with the corresponding folding mechanism to achieve synchronous unlocking and folding of the frame and the seat, linkage unlocking through a steel rope is not needed, the stability is better, the service life is longer, the structure is simple, the operation is convenient, and the practicability is high. And the folding operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of infant and toddler products technology, and in particular to a stroller with automatic folding mechanism. Background Technology

[0002] Strollers, designed to facilitate children's outdoor activities, greatly reduce the burden of carrying children when going out. To facilitate daily use, carrying, assembly, and shipping, existing strollers generally have a folding function, which reduces the burden of carrying and also reduces the space occupied. In addition, among folding strollers, there are even strollers with automatic folding mechanisms to further reduce the burden and space occupied. However, for traditional automatic folding strollers, the unlocking and locking mechanisms usually use steel rope linkage for unlocking. The stability of steel rope linkage is slightly poor, which affects the lifespan of the stroller with long-term use. Utility Model Content

[0003] The main purpose of this utility model is to propose an automatically folding stroller, which aims to solve the technical problem that the operation of existing automatically folding strollers is cumbersome and insufficient to meet the convenience requirements of automatically folding strollers.

[0004] To achieve the above objectives, this utility model proposes an automatically folding stroller. The automatically folding stroller includes a foldable frame and a seat that engages with the frame. The frame includes an upper handlebar tube and a lower handlebar tube. The upper handlebar tube is slidably disposed on the lower handlebar tube, and an unlocking mechanism is provided at the bottom of the lower handlebar tube for driving the frame and seat to release synchronously. The upper handlebar tube acts on the unlocking mechanism by sliding down from the lower handlebar tube.

[0005] Furthermore, the unlocking mechanism includes an impact component and a retraction mechanism. The impact component includes an impact member and an impacted member. The impact member is connected to the lower end of the upper handle tube, while the impacted member is connected to the retraction mechanism. When the upper handle tube slides down along the lower handle tube, the impact member that is connected to it impacts the impacted member, causing the impacted member to move and act on the retraction mechanism.

[0006] Furthermore, the retraction mechanism includes a pusher connected to the impacted component and a first retraction mechanism for retracting at least part of the frame and seat. The first retraction mechanism includes a rotating component and a first limiting component. The frame also includes a handlebar joint seat and a footrest joint seat. In the initial state, the first limiting component abuts against the handlebar joint seat and the footrest joint seat. When the impacted component collides with the impacted component, the first retraction mechanism is impacted by the impacted component. The pusher is impacted and drives the rotating component to rotate eccentrically. In turn, the rotating component drives the first limiting component to move and extend into the handlebar joint seat.

[0007] Furthermore, the pushing member includes a first working surface for driving the rotating member to rotate eccentrically and a second working surface for restricting the movement of the rotating member. The rotating member has at least one first working part on the side that is connected to the first limiting member. The first limiting member has at least one second working part corresponding to the first working part. The first working part is a protrusion that gradually narrows from the bottom of the rotating member to the tip and the tip gradually deviates from the center. The second working part is a through channel whose shape matches the first working part.

[0008] Furthermore, the folding mechanism also includes a second folding mechanism for further folding the frame and seat. The second folding mechanism includes a slider, a movable member, and a second limiting member. The pushing member also includes a third action surface facing the side of the footrest joint seat. The third action surface is connected to the slider and causes the slider to collide with the movable member. The frame also includes a seat joint seat and a backrest joint seat. In the initial state, the second limiting member abuts against the seat joint seat and the backrest joint seat. After the movable member is impacted by the slider, it causes the second limiting member to move and extend into the backrest joint seat.

[0009] Furthermore, the third working surface includes inclined surfaces respectively disposed on both sides and having a height difference. The inclined surfaces are curved surfaces with an arc. The sliding member includes a circumferential portion that abuts against the third working surface and an abutting portion disposed on the other side. The abutting portion abuts against the movable member.

[0010] Furthermore, the folding mechanism also includes a third folding mechanism for further folding the frame and seat. The frame also includes an armrest joint seat. The third folding mechanism includes a lateral shift assembly and a third limiting member. The movable member includes a first movable part for engaging the sliding member and a second movable part for engaging the lateral shift assembly. In the initial state, the third limiting member abuts between the seat joint seat and the armrest joint seat. The second movable part causes the lateral shift assembly to shift, and then the lateral shift assembly causes the third limiting member to move and extend into the armrest joint seat.

[0011] Furthermore, the lateral shift assembly includes a first lateral shift member abutting against the second movable part and a second lateral shift member driven by the first lateral shift member, thereby controlling the third limiting member to extend into the armrest joint seat. The second movable part and the first lateral shift member are in contact through abutting inclined surfaces. The third limiting member is provided with a circular surface, and the circular surface abuts against the inclined surface provided by the second lateral shift member.

[0012] Furthermore, the frame also includes a linkage joint seat connected to the handlebar joint seat. The linkage joint seat is equipped with a linkage. The linkage joint seat is connected to the handlebar joint seat through a rotating shaft and a linkage and rotates synchronously with the handlebar joint seat. The footrest joint seat is connected to a hinged front foot assembly and a rear foot assembly, and the front foot assembly and the rear foot assembly are connected by a linkage.

[0013] Furthermore, a movable joint seat is provided between the linkage joint seat and the seat joint seat. The retraction mechanism also includes a fourth retraction mechanism for further retracting the frame and the seat. The fourth retraction mechanism includes a fourth limiting member, a first limiting portion disposed on the seat joint seat, and a second limiting portion disposed on the movable joint seat. The first limiting portion is defined as at least a partial circumferential structure, and the second limiting portion is defined as a cavity capable of at least partially accommodating the fourth limiting member. The fourth limiting member is movably disposed on the first limiting portion and the second limiting portion.

[0014] This utility model achieves convenient folding by setting up a frame, a seat, and an unlocking mechanism for synchronously releasing and locking the frame and seat. When the upper handlebar tube moves along the lower handlebar tube and falls to the impact component, it collides with the frame's joints. The impact component acts on the folding mechanism, causing the various joints of the frame to fold. The folding mechanism includes a first folding mechanism, a second folding mechanism, a third folding mechanism, and a fourth folding mechanism. These mechanisms are used to unlock the handlebar joints, backrest joints, armrest joints, and seat joints, respectively. In addition, a linkage joint is set up for further frame folding. Specifically, the linkage pulls the hinged front and rear leg groups to achieve further frame folding. In this utility model, when the handlebar tube moves downward during folding, the impact component strikes the corresponding folding mechanism to achieve synchronous release and folding of the frame and seat. This eliminates the need for unlocking via a steel cable, resulting in better stability, longer service life, and convenient folding operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 A three-dimensional structural diagram of the impact component and the actuating component;

[0017] Figure 3 An exploded view of the impacted component and the retraction mechanism;

[0018] Figure 4 For the partial decomposition of the closing mechanism Figure 1 ;

[0019] Figure 5 For the partial decomposition of the closing mechanism Figure 2 ;

[0020] Figure 6 For the partial decomposition of the closing mechanism Figure 3 ;

[0021] Figure 7 This is a three-dimensional structural diagram of the movable joint seat.

[0022] The above figures include the following reference numerals:

[0023] 10. Frame; 101. Top tube of handlebars; 1011. Locking structure; 102. Bottom tube of handlebars; 103. Handlebar joint seat; 104. Baseplate joint seat; 1041. Front foot assembly; 1042. Rear foot assembly; 105. Seat joint seat; 1051. Seat; 1052. First limiting part; 106. Backrest joint seat; 1061. Backrest; 107. Armrest joint seat; 1071. Armrest; 108. Link joint seat; 1081. Link; 109. Movable joint seat; 1091. Second limiting part; 1. Unlocking mechanism; 2. Impact assembly; 21. Impact member; 22. Impacted member; 3. Pushing member; 31. First action surface; 32. Second action surface 33. Third working surface; 4. Closing mechanism; 41. First closing mechanism; 411. Rotating component; 4111. First working part; 412. First limiting component; 4121. Second working part; 42. Second closing mechanism; 421. Sliding component; 4211. Circumferential part; 4212. Abutting part; 422. Movable component; 4221. First movable part; 4222. Second movable part; 423. Second limiting component; 43. Third closing mechanism; 431. Lateral shift assembly; 4311. First lateral shift component; 4312. Second lateral shift component; 432. Third limiting component; 4321. Circular surface; 44. Fourth closing mechanism; 441. Fourth limiting component; 5. Linking component. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] This utility model proposes a children's stroller with automatic folding mechanism.

[0028] In this embodiment of the utility model, such as Figures 1 to 7 As shown, there is a collapsible frame 10 and a seat 1051 that engages with the frame. The frame 10 includes an upper handlebar tube 101 and a lower handlebar tube 102. The upper handlebar tube 101 is slidably disposed on the lower handlebar tube 102, and an unlocking mechanism 1 for driving the frame 10 and the seat 1051 to release synchronously is provided at the bottom of the lower handlebar tube 102. The upper handlebar tube 101 acts on the unlocking mechanism 1 by sliding down from the lower handlebar tube 102.

[0029] Specifically, the unlocking mechanism 1 includes an impact component 2 and a retraction mechanism 4. The impact component 2 includes an impact member 21 and an impacted member 22. The impact member 21 is connected to the lower end of the handlebar upper tube 101, while the impacted member 22 is connected to the retraction mechanism 4. When the handlebar upper tube 101 slides down along the handlebar lower tube 102, the impact member 21 impacts the impacted member 22, causing the impacted member 22 to move and act on the retraction mechanism 4. At this point, the retraction mechanism 4 initiates the subsequent retraction steps of the frame 10 and the seat 1051.

[0030] Specifically, to prevent accidental activation during use, the upper handle tube 101 is equipped with a locking structure 1011. The locking structure 1011 is a double-lock structure. The locking structure 1011 can adopt a general internal rope design. Specifically, a pin can be set in the upper handle tube 101, and a slot can be set in the lower handle tube 102. The pin is pulled by the rope to disengage from the slot, thereby releasing the upper handle tube 101 and allowing it to fall. This is the prior art and will not be described in detail.

[0031] In an embodiment of this utility model, the closing mechanism 4 includes a pusher 3 connected to the impact member 22 and a first closing mechanism 41 for closing at least part of the frame 10 and the seat 1051. The first closing mechanism 41 includes a rotating member 411 and a first limiting member 412. The frame 10 also includes a handlebar joint seat 103 and a footrest joint seat 104. In the initial state, the first limiting member 412 abuts against the handlebar joint seat 103 and the footrest joint seat 104. When the impact member 21 collides with the impact member 22, the first closing mechanism 41 is impacted by the impact member 22. The pusher 3 is impacted and drives the rotating member 411 to rotate eccentrically. Then the rotating member 411 drives the first limiting member 412 to move and extend into the handlebar joint seat 103.

[0032] Furthermore, in order to enable the present invention to reset after operation, a reset component is provided between the first limiting member 412 and the handle joint seat 103. The reset component is preferably a spring. In some other embodiments, the reset component can also be replaced by common elastic materials such as rubber, sponge, and elastic fiber. The selection of elastic materials is prior art and will not be described in detail here. It is understood that the corresponding limiting member and joint seat are also provided with a reset component in the following description, which will not be described in detail here. In the preferred embodiment of the present invention, a reset component is provided between the limiting member and the joint seat.

[0033] Specifically, the pushing member 3 includes a first action surface 31 for driving the rotating member 411 to rotate eccentrically and a second action surface 32 for restricting the movement of the rotating member 411. The rotating member 411 has at least one first action part 4111 on the side that is connected to the first limiting member 412. The first limiting member 412 has at least one second action part 4121 corresponding to the first action part 4111. When the pushing member 3 is pressed down by the impact of the impact member 22, the first action surface 31 presses down on the rotating member 411. Then the first action part 4111 and the second action part 4121 cooperate to make the first limiting member 412 extend into the handle joint seat 103.

[0034] Understandably, in order to make the handlebar upper tube 101 spring back, a reset component can be provided at the bottom of the pusher 3. For an alternative embodiment of the reset component, refer to the description of the reset component between the limiting member and the joint seat.

[0035] More specifically, the first actuating part 4111 is a protrusion that gradually tapers upward from the bottom of the rotating part 411 to its tip, and the tip gradually deviates from the center. The second actuating part 4121 is a through channel whose shape matches the first actuating part 4111. In some other embodiments, the protrusion and the through channel can be reversed, that is, the first actuating part 4111 is the through channel, and the second actuating part 4121 is the protrusion. In addition, this structure can better realize the rotation and movement functions.

[0036] Furthermore, the folding mechanism 4 also includes a second folding mechanism 42 for further folding the frame 10 and the seat 1051. The second folding mechanism 42 includes a slider 421, a movable member 422, and a second limiting member 423. The pusher 3 also includes a third action surface 33 facing the side of the footrest joint seat 104. The third action surface 33 is connected to the slider 421 and causes the slider 421 to collide with the movable member 422. The frame 10 also includes a seat joint seat 105 and a backrest joint seat 106. In the initial state, the second limiting member 423 abuts against the seat joint seat 105 and the backrest joint seat 106. After the movable member 422 is impacted by the slider 421, it causes the second limiting member 423 to move and extend into the backrest joint seat 106.

[0037] Specifically, the third working surface 33 includes inclined surfaces respectively disposed on both sides and having a height difference. The inclined surfaces are curved surfaces with an arc. The sliding member 421 includes a circumferential portion 4211 disposed on the third working surface 33 and an abutting portion 4212 disposed on the other side. The abutting portion 4212 is disposed on the movable member 422. When the sliding member 421 moves, the circumferential portion 4211 abuts against the third working surface 33, thereby generating an offset and causing the abutting portion 4212 to act on the subsequent component.

[0038] Furthermore, the folding mechanism 4 also includes a third folding mechanism 43 for further folding the frame 10 and the seat 1051. The frame 10 also includes an armrest joint seat 107. The third folding mechanism 43 includes a lateral shifting component 431 and a third limiting member 432. The movable member 422 includes a first movable part 4221 for engaging the sliding member 421 and a second movable part 4222 for engaging the lateral shifting component 431. In the initial state, the third limiting member 432 abuts between the seat joint seat 105 and the armrest joint seat 107. The second movable part 4222 drives the lateral shifting component 431 to shift, and then the lateral shifting component 431 drives the third limiting member 432 to move and extend into the armrest joint seat 107.

[0039] Specifically, the lateral shift assembly 431 includes a first lateral shift member 4311 abutting against the second movable part 4222 and a second lateral shift member 4312 driven by the first lateral shift member 4311, thereby controlling the third limiting member 432 to extend into the armrest joint seat 107. The second movable part 4222 and the first lateral shift member 4311 are in contact through abutting inclined surfaces. The third limiting member 432 is provided with a circular surface 4321, and the circular surface 4321 abuts against the inclined surface of the second lateral shift member 4312. The abutting of the inclined surfaces of the second movable part 4222 and the first lateral shift member 4311 is conducive to the stability of the movement of the cooperating components. At the same time, the circular surface 4321 of the third limiting member 432 can better cooperate with the second lateral shift member 4312, so that the third limiting member 432 can smoothly extend into the armrest joint seat 107.

[0040] Furthermore, the frame 10 also includes a linkage joint seat 108 connected to the handlebar joint seat 103. The linkage joint seat 108 is equipped with a connecting rod 1081. The linkage joint seat 108 is connected to the handlebar joint seat 103 via a rotating shaft and a linkage 5 and rotates synchronously with the handlebar joint seat 103. The footrest joint seat 104 is connected to a hinged front foot assembly 1041 and a rear foot assembly 1042. The front foot assembly 1041 and the rear foot assembly 1042 are connected via the connecting rod 1081. When the handlebar joint seat 103 rotates, the linkage joint seat 108 rotates with the handlebar joint seat 103. At the same time, the connecting rod 1081 rotates and pulls the front foot assembly 1041, causing the hinged front foot assembly 1041 to retract into the rear foot assembly 1042.

[0041] Specifically, a movable joint seat 109 is provided between the connecting rod joint seat 108 and the seat joint seat 105. The retraction mechanism 4 also includes a fourth retraction mechanism 44 for further retracting the frame 10 and the seat 1051. The fourth retraction mechanism 44 includes a fourth limiting member 441, a first limiting portion 1052 disposed on the seat joint seat 105, and a second limiting portion 1091 disposed on the movable joint seat 109. The first limiting portion 1052 is defined as at least partially circumferential, and the second limiting portion 1091 is defined as a cavity capable of at least partially accommodating the fourth limiting member 441. The fourth limiting member 441 is movably disposed on the first limiting portion 1052 and the second limiting portion 1091. It is worth noting that the reset member that is matched with the fourth limiting member 441 is located at the end of the fourth limiting member 441 facing the movable joint seat 109.

[0042] Furthermore, a corresponding action part is provided between the movable joint seat 109 and the connecting rod joint seat 108 to engage and lock together. Thus, the movable joint seat 109 will rotate along with the connecting rod joint seat 108 when it rotates. Therefore, the working principle of this utility model is summarized as follows: When the unlocking mechanism 1 is triggered, the handlebar joint seat 103, the backrest joint seat 106, and the armrest joint seat 107 are unlocked. The corresponding upper handlebar tube 101, lower handlebar tube 102, backrest 1061, and armrest 1071 rotate downward clockwise together. Meanwhile, the fourth limiting member 441 drives the seat 1051 to rotate upward clockwise. When the frame 10 reaches its highest point, it falls down by gravity and continues to rotate clockwise. At this point, the frame 10 is completely closed.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A child stroller with automatic folding mechanism, characterized in that, The bicycle includes a collapsible frame and a seat that engages with the frame. The frame includes a top handlebar tube and a bottom handlebar tube. The top handlebar tube is slidably disposed on the bottom handlebar tube, and an unlocking mechanism is provided at the bottom of the bottom handlebar tube for driving the frame and seat to release synchronously. The top handlebar tube acts on the unlocking mechanism by sliding down from the bottom handlebar tube.

2. The stroller as described in claim 1, characterized in that: The unlocking mechanism includes an impact component and a retraction mechanism. The impact component includes an impact member and an impacted member. The impact member is connected to the lower end of the upper handle tube, while the impacted member is connected to the retraction mechanism. When the upper handle tube slides down along the lower handle tube, the impact member that is connected to it impacts the impacted member, causing the impacted member to move and act on the retraction mechanism.

3. The stroller as described in claim 2, characterized in that: The retraction mechanism includes a pusher connected to the impacted component and a first retraction mechanism for retracting at least part of the frame and seat. The first retraction mechanism includes a rotating component and a first limiting component. The frame also includes a handlebar joint seat and a footrest joint seat. In the initial state, the first limiting component abuts against the handlebar joint seat and the footrest joint seat. When the impacted component collides with the impacted component, the first retraction mechanism is impacted by the impacted component. The pusher is impacted and drives the rotating component to rotate eccentrically. In turn, the rotating component drives the first limiting component to move and extend into the handlebar joint seat.

4. The stroller as described in claim 3, characterized in that: The pusher includes a first action surface for driving the rotating part to rotate eccentrically and a second action surface for restricting the movement of the rotating part. The rotating part is provided with at least one first action part on the side that is connected to the first limiting member. The first limiting member is provided with at least one second action part corresponding to the first action part. The first action part is a protrusion that gradually narrows from the bottom of the rotating part to the tip and the tip gradually deviates from the center. The second action part is a through channel whose shape matches the first action part.

5. The stroller as described in claim 3, characterized in that: The folding mechanism also includes a second folding mechanism for further folding the frame and seat. The second folding mechanism includes a slider, a movable member, and a second limiting member. The pushing member also includes a third action surface facing the side of the footrest joint seat. The third action surface is connected to the slider and causes the slider to collide with the movable member. The frame also includes a seat joint seat and a backrest joint seat. In the initial state, the second limiting member abuts against the seat joint seat and the backrest joint seat. After the movable member is impacted by the slider, it causes the second limiting member to move and extend into the backrest joint seat.

6. The stroller as described in claim 5, characterized in that: The third working surface includes inclined surfaces respectively disposed on both sides with a height difference. The inclined surfaces are curved surfaces with an arc. The sliding member includes a circumferential part that abuts against the third working surface and an abutting part disposed on the other side. The abutting part abuts against the movable part.

7. The stroller as described in claim 5, characterized in that: The folding mechanism also includes a third folding mechanism for further folding the frame and seat. The frame also includes an armrest joint seat. The third folding mechanism includes a lateral shift assembly and a third limiting member. The movable member includes a first movable part for engaging the sliding member and a second movable part for engaging the lateral shift assembly. In the initial state, the third limiting member abuts between the seat joint seat and the armrest joint seat. The second movable part causes the lateral shift assembly to shift, and then the lateral shift assembly causes the third limiting member to move and extend into the armrest joint seat.

8. The stroller as described in claim 7, characterized in that: The lateral shift assembly includes a first lateral shift member abutting against the second movable part and a second lateral shift member driven by the first lateral shift member, thereby controlling the third limiting member to extend into the armrest joint seat. The second movable part and the first lateral shift member are in contact through abutting inclined surfaces. The third limiting member is provided with a circular surface, and the circular surface abuts against the inclined surface provided by the second lateral shift member.

9. The stroller as described in claim 5, characterized in that: The frame also includes a linkage joint seat connected to the handlebar joint seat. The linkage joint seat is equipped with a linkage. The linkage joint seat is connected to the handlebar joint seat through a rotating shaft and a linkage and rotates synchronously with the handlebar joint seat. The foot joint seat is connected to a hinged front foot assembly and a rear foot assembly, and the front foot assembly and the rear foot assembly are connected by a linkage.

10. The stroller as described in claim 9, characterized in that: A movable joint seat is provided between the linkage joint seat and the seat joint seat. The retraction mechanism also includes a fourth retraction mechanism for further retracting the frame and the seat. The fourth retraction mechanism includes a fourth limiting member, a first limiting portion disposed on the seat joint seat, and a second limiting portion disposed on the movable joint seat. The first limiting portion is defined as at least a partial circumferential structure, and the second limiting portion is defined as a cavity capable of at least partially accommodating the fourth limiting member. The fourth limiting member is movably disposed on the first limiting portion and the second limiting portion.

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