Linkage type automatic folding baby stroller

Abstract

A linkage type automatic folding baby stroller has an unfolding state and a folding state and comprises a stroller frame assembly and a seat assembly which are coaxially and rotationally assembled, and an unlocking operation piece is arranged at the bottom end of a seat joint; a frame unlocking seat is rotationally assembled on the inner side of the frame joint, a frame unlocking knob is arranged on the frame unlocking seat, a locking and screwing cover is fixedly buckled on the frame unlocking knob, the locking and screwing cover is arranged corresponding to the outer side of the seat joint, and the locking and screwing cover is provided with an inserting groove used for being inserted into the unlocking operation piece in a matched mode. And a first locking element is arranged in the frame joint. In the unfolded state, the inner side of the frame unlocking knob abuts against the first locking element through a transmission piece. According to the scheme, the unlocking structure arranged in a linkage mode is arranged, under the assistance of the gravity of the whole bicycle or the force of a spring system of the bicycle folding assisting elastic assembly, automatic bicycle folding of the whole bicycle is rapidly achieved, operation is easy, the bicycle folding size can be reduced, and carrying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of baby carriages, in particular to a linkage type automatically foldable baby carriage. Background Art

[0002] As a "transportation tool" for babies, baby strollers are a type of stroller that requires someone to help push or pull it. Baby strollers have become an essential tool for infants and young children to travel. In addition to the basic requirements of stability and safety of baby strollers, users are increasingly paying attention to the small size and foldability of baby strollers.

[0003] At present, most baby strollers on the market have numerous assembled parts, complex structures, and are inconvenient to operate. In particular, the seat folding operation of the entire stroller is cumbersome. Not only is it difficult to fold it quickly, but the folded body of the stroller still takes up a large space, which is not conducive to guardians carrying it when going out.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0005] The utility model aims to provide a linkage type automatically foldable baby stroller.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a linked automatically foldable baby stroller, which has an unfolded state and a folded state. The baby stroller includes a frame assembly and a seat assembly. The seat assembly is coaxially rotatably assembled with the frame assembly. The frame assembly includes a push rod assembly, a rear bracket assembly, a front bracket assembly and a frame joint; the seat assembly includes a backrest, a seat plate, an armrest and a seat joint.

[0007] An unlocking operating member is provided at the bottom end of the seat joint. A frame unlocking seat is rotatably mounted on the inner side of the frame joint, and a frame unlocking knob is provided on the frame unlocking seat. A locking cover is fixedly buckled on the frame unlocking knob, and the locking cover is arranged corresponding to the outer side of the seat joint, and the locking cover is provided with a plug-in slot for adapting and plugging the unlocking operating member. A first locking element for locking and unlocking the frame assembly 1 is provided inside the frame joint. In the unfolded state, the inner side of the frame unlocking knob abuts against the first locking element through a transmission member.

[0008] A second locking element for locking or unlocking the seat assembly is arranged inside the seat joint, and the backrest and the armrest are locked or unlocked relative to the seat plate through the second locking element.

[0009] In the above scheme, when the seat assembly is in a folded state, rotating the seat assembly drives the frame unlocking seat to rotate relative to the frame assembly, and the frame unlocking knob drives the transmission member to disengage and slide axially toward the outside of the frame joint, so that the first locking element enters the joint of the rear bracket assembly, thereby completing the unlocking of the frame assembly.

[0010] In the above scheme, by means of the rotational arrangement between the unlocking operating member, the frame unlocking seat and the second locking element and the first locking element, and by utilizing the trigger linkage effect between the two locking elements, the frame assembly and the seat assembly can realize automatic folding of the entire vehicle under the action of gravity.

[0011] According to a further technical solution, a spring is also abutted against the bottom end of the frame unlocking knob, and the frame unlocking knob and the spring correspond one-to-one to form a set of unlocking and resetting mechanisms. The two sets of unlocking and resetting mechanisms are arranged inside the frame unlocking seat and are symmetrically distributed left and right based on the vertical center line of the frame unlocking seat.

[0012] According to a further technical solution, the frame assembly further includes a convex adapter, and the corresponding seat assembly further includes a concave adapter. The convex adapter and the concave adapter constitute an adapter connector for disassembling the frame assembly and the seat assembly, one of the convex adapter and the concave adapter is embedded in the inner side of the frame joint, and the other is embedded in the outer side of the seat joint.

[0013] According to a further technical solution, the upper portion of the push rod assembly is provided with a push rod extension portion, through which the push rod extension portion and a U-shaped connecting rod are connected, and the two ends of the connecting rod are respectively plugged and fixed with the push rod extension portions on both sides.

[0014] According to a further technical solution, the rear support assembly extends in an inclined state from top to bottom and backward, and a rear wheel assembly is provided at the bottom of the rear support assembly; the front support assembly extends in an inclined state from top to bottom and forward, and a front wheel assembly is provided at the bottom of the front support assembly.

[0015] According to a further technical solution, a vehicle folding assist elastic component is provided between the rear support component and the front support component.

[0016] According to a further technical solution, a curtain frame for mounting a sunshade is provided on the backrest, and a backrest handle is also provided on the top of the backrest. The backrest handle is connected to the second locking element through a traction wire hidden inside the backrest.

[0017] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0018] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0019] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0020] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0021] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0022] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0023] The working principle and advantages of this utility model are as follows:

[0024] The present invention is provided with a locking element which is linked to quickly unlock the seat assembly and the frame assembly, so that the entire vehicle can be automatically folded and collapsed with the assistance of gravity or the spring system force of the folding assist elastic assembly.

[0025] In addition, this case realizes the rapid conversion of the entire vehicle structure from the unfolded state to the folded state through one-touch folding, which simplifies and facilitates the folding operation, and can reduce the size of the stroller for easy carrying.

[0026] In addition, the frame assembly and seat assembly of this case have good stability and reliability in the unfolded state, and can provide children with stable load-bearing support to ensure their safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 This is a schematic diagram of the structure of the whole vehicle in the state where the frame assembly and the seat assembly are combined according to the embodiment of the utility model;

[0028] Attached Figure 2 This is a structural schematic diagram of a frame assembly in a locked state according to an embodiment of the utility model;

[0029] Attached Figure 3This is a schematic diagram of a half-section structure of a frame joint portion in a locked state of a frame assembly according to an embodiment of the utility model;

[0030] Attached Figure 4 This is a schematic cross-sectional structure diagram of a frame joint portion when the frame assembly of the embodiment of the utility model is in a locked state;

[0031] Attached Figure 5 It is a structural schematic diagram of the frame assembly of the embodiment of the utility model when the frame joints are in a folded state;

[0032] Attached Figure 6 This is a schematic diagram of the overall structure of the seat assembly in a locked state according to an embodiment of the utility model;

[0033] Attached Figure 7 This is a schematic diagram of a half-section structure of a seat joint portion in a locked state of a seat assembly according to an embodiment of the utility model;

[0034] Attached Figure 8 This is a schematic diagram of the structure of the seat assembly of the embodiment of the utility model in a folded state;

[0035] Attached Fig. 9 It is a partial structural schematic diagram of the vehicle frame unlocking seat and the first locking element in the unlocking state according to the embodiment of the utility model;

[0036] Attached Fig.10 This is a schematic diagram of the whole vehicle structure in which the seat assembly is installed forwardly according to an embodiment of the utility model;

[0037] Attached Fig.11 This is a structural schematic diagram of a vehicle in which the seat assembly is installed forwardly in a folded state according to an embodiment of the utility model;

[0038] Attached Fig.12 This is a schematic diagram of the whole vehicle structure in which the seat assembly is reversely installed according to an embodiment of the utility model;

[0039] Attached Fig.13 This is a structural schematic diagram of a vehicle in which the seat assembly is reversely installed in an embodiment of the utility model and is in a folded state;

[0040] Attached Fig.14 For attachment Figure 2 A partial enlarged view of the middle A;

[0041] Attached Fig.15 For attachment Figure 3 A partial enlarged view of point B in the middle;

[0042] Attached Fig.16 For attachment Figure 4 A partial enlarged view of point C in the middle;

[0043] Attached Fig.17 This is a schematic diagram of the structure of the vehicle frame unlocking seat in a locked state according to an embodiment of the utility model;

[0044] Attached Fig.18 This is a schematic diagram of the structure of the vehicle frame unlocking seat in the unlocked state according to the embodiment of the utility model;

[0045] Attached Fig.19 It is a partial exploded view of an embodiment of the utility model.

[0046] In the above drawings: 1. frame assembly; 10. convex adapter; 11. push rod assembly; 12. connecting rod; 13. rear bracket assembly; 14. rear wheel assembly; 15. front bracket assembly; 16. front wheel assembly; 17. connecting plate; 18. frame joint; 2. seat assembly; 20. concave adapter; 21. backrest; 211. backrest connecting piece; 212. backrest handle; 22. seat plate; 221. seat plate connecting piece; 23. armrest; 231. armrest connecting piece; 24. unlocking operating piece; 25. curtain frame; 26. seat joint; 3. second locking element; 4. frame unlocking seat; 41. frame unlocking knob; 411. inclined surface; 42. spring; 43. lock cover; 431. plug-in slot; 5. first locking element; 6. Transmission parts; 7. Retraction assist elastic component; a. Rotation center line; b. Rotation center line. DETAILED DESCRIPTION

[0047] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0048] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0049] See attached Figures 1 to 5 As shown, a linkage type automatically foldable baby stroller of the utility model has a frame assembly 1 and a seat assembly 2 in an unfolded state and a folded state, the frame assembly 1 includes a push rod assembly 11, a rear support assembly 13 and a front support assembly 15, the upper portion of the push rod assembly 11 has a push rod extension portion, through the push rod extension portion and a U-shaped connecting rod 12, the two ends of the connecting rod 12 are respectively plugged and fixed with the push rod extension portions on both sides; the rear support assembly 13 is extended in an inclined state from top to bottom and backward, and a rear wheel assembly 14 is provided at the bottom of the rear support assembly 13; the front support assembly 15 is extended in an inclined state from top to bottom and forward, and a front wheel assembly 16 is provided at the bottom of the front support assembly 15.

[0050] The push rod assembly 11 and the rear support assembly 13 are rotatably assembled relative to a connecting plate 17 to form a frame joint 18. The lower part of the push rod assembly 11 is rotatably connected relative to the rear support assembly 13 around a rotation center line a; the frame joint 18 is rotatably assembled with the front support assembly 15 through the connecting plate 17. Among them, a vehicle folding assist elastic assembly 8 is provided between the rear support assembly 13 and the front support assembly 15. The vehicle folding assist elastic assembly 7 is provided to provide a spring system force for rapid folding of the entire vehicle, so that the front support assembly 15 can be rotated and folded relative to the connecting plate 17, which is convenient for the overall folding of the cart. When the frame assembly 1 and the seat assembly 2 are in the unfolded state, the vehicle folding assist elastic assembly 7 is subjected to force in a stretched state; when the frame assembly 1 and the seat assembly 2 are in the folded state, the vehicle folding assist elastic assembly 7 does not shrink and is in a normal state, and its length and shape are in the initial state.

[0051] See attached Figures 6-8 As shown, the seat assembly 2 includes a backrest 21, a seat plate 22 and an armrest 23, the head of the backrest 21 is connected to a backrest connector 211, the head of the seat plate 22 is connected to a seat plate connector 221, the armrest 23 is U-shaped and both ends thereof are connected to armrest connectors 231, the backrest connector 211, the seat plate connector 221 and the armrest connector 231 are assembled to form a seat joint 26, the seat joint 26 is rotatably connected around the same rotation center line b, and the backrest 21 and the armrest 23 are rotatably folded relative to the seat plate 22.

[0052] A backrest handle 212 is also provided at the top of the backrest 21, and the backrest handle 212 is connected to the second locking element 5 through a traction wire hidden inside the backrest 21. The backrest handle 212 can be used to control the unlocking of the second locking element 5 relative to the seat assembly 2.

[0053] The backrest 21 is also provided with a curtain frame 25, which can be used to install a sunshade, and can also be connected to various types of car covers, mosquito repellent covers, etc.

[0054] In the present invention, the baby stroller comprises a frame assembly 1 having an unfolded state and a folded state, and a seat assembly 2, wherein the seat assembly 2 is coaxially rotatably assembled with the frame assembly 1. The frame assembly 1 comprises a push rod assembly 11, a rear support assembly 13, a front support assembly 15, and a frame joint 18; the seat assembly 2 comprises a backrest 21, a seat plate 22, an armrest 23, and a seat joint 26.

[0055] The bottom end of the seat joint 26 is provided with an unlocking operating member 24 (such as Figure 6 As shown, the unlocking operating member 24 may be specifically a plate-shaped plug-in member), and a frame unlocking seat 4 is rotatably mounted on the inner side of the frame joint 18.

[0056] The frame unlocking seat 4 is provided with a frame unlocking knob 41 and a lock rotary cover 43. The outer side of the frame unlocking knob 41 is fixedly buckled with the lock rotary cover 43. The lock rotary cover 43 is provided with a plug-in slot 431 for the unlocking operating member 24 to be adapted and plugged in. The inner side of the frame unlocking knob 41 is in contact with the first locking element 3 provided inside the frame joint 18 through a transmission member 6, so that the first end of the first locking element 3 acts on the frame unlocking seat 4, and the second end of the first locking element 3 acts on the frame joint 18.

[0057] In addition, see Appendix Fig. 9 and attached Figures 16-18 As shown, the frame unlocking seat 4 is provided with a frame unlocking knob 41, a spring 42 and a lock cover 43. The outer side of the frame unlocking knob 41 is fixedly buckled with the lock cover 43, and the insertion groove 431 provided on the lock cover 43 is adapted to abut against the unlocking operating member 24, and the inner side of the frame unlocking knob 41 abuts against the first locking element 3, and the bottom end of the frame unlocking knob 41 abuts against the spring 42, and the frame unlocking knob 41 and the spring 42 correspond to each other to form a set of unlocking and resetting mechanisms, and the two sets of unlocking and resetting mechanisms are arranged inside the frame unlocking seat 4 and are symmetrically distributed with respect to the vertical center line of the frame unlocking seat 4. The spring 42 acts on the frame unlocking knob 41. When it is restored from the folded state to the unfolded state, the frame assembly 1 is first unfolded, and the spring 42 plays a resetting support role, so that the auxiliary transmission member 6 can be reset to the abutment or holding state between the two frame unlocking knobs 41. The frame unlocking knob 41 is provided with the function of unlocking rotation limit in the frame unlocking seat 4. Its purpose is that when the frame unlocking seat 4 is rotated and unlocked and subjected to force, the frame unlocking knob 41 will abut against the inner wall of the frame unlocking seat 4, and then the frame unlocking knob 41 can drive the transmission member 6 to change its position, so that the transmission member 6 moves along the inclined surface 411 of the frame unlocking knob 41 while being pushed axially outward, changing the abutting positioning state of the transmission member 6 relative to the frame unlocking knob 41, so that the transmission member 6 moves along the inclined surface of the frame unlocking knob 41 in the direction close to the first locking element 3, and the first locking element 3 is driven to be displaced by the transmission member 6, and when the first locking element 3 enters the rear bracket assembly 13, the frame assembly 1 is unlocked. Since the frame unlocking knob 41 can rotate relative to the frame unlocking seat 4, the frame unlocking knob 41 will not drive the first locking element 3; moreover, after the frame assembly 1 is unfolded, the frame assembly 1 can be effectively prevented from being unlocked again when the seat assembly 2 is unfolded. At the same time, the spring 42 can enable the frame unlocking knob 41 to overcome gravity, so that the transmission member 6 moves along the inclined surface 411 back to the initial state, completing the automatic resetting of the transmission member 6, so that the first locking element 3 returns to its position, and the unfolding stability of the frame assembly 1 and the seat assembly 2 is maintained.

[0058] The frame assembly 1 further includes a convex adapter 10, and the corresponding seat assembly 2 further includes a concave adapter 20. The convex adapter 10 and the concave adapter 20 constitute an adapter connector for disassembling the frame assembly 1 and the seat assembly 2, one of the convex adapter 10 and the concave adapter 20 is embedded in the inner side of the frame joint 18, and the other is embedded in the outer side of the seat joint 26.

[0059] See attached Figures 10 to 15 As shown, the working principle is: when the frame assembly 1 and the seat assembly 2 are rotated and assembled, the rotation center line a and the rotation center line b completely overlap, and the seat assembly 2 can be installed in the forward direction and the reverse direction relative to the frame assembly 1. When both are in the unfolded state, the push rod assembly 11 and the rear bracket assembly 13 of the frame assembly 1 are locked relative to the front bracket assembly 15 by the first locking element 3, so that the frame assembly 1 is stably supported; the backrest 21 and the armrest 23 of the seat assembly 2 are locked relative to the seat plate 22 by the second locking element 5, so that the seat assembly 2 is stably supported.

[0060] When the guardian operates the backrest handle 212 to unlock the second locking element 4, the backrest 21 and the armrest 23 can be rotated relative to the seat plate 22, and within the rotation range of the seat assembly 2 relative to the frame assembly 1, the second locking element 4 is driven to move away from the concave adapter 20, so that the joint of the seat assembly 2 is disengaged from the lock, and the seat assembly 2 is unlocked; the backrest 21 of the seat assembly 2 is continued to be rotated, and the unlocking operating member 24 is driven to rotate synchronously through the backrest connecting member 211 connected below the backrest 21, so that the unlocking operating member 24 is released. The unlocking operating member 24 is used to rotate the frame unlocking seat 4. When the frame unlocking seat 4 rotates a certain angle, the frame unlocking knob 41 drives the transmission member 6. The transmission member 6 controls the first locking element 3 to move, unlocks the first locking element 3 and makes it disengage from the locking area formed between the push rod assembly 11 and the rear bracket assembly 13 in the frame joint 18, and enters the rear bracket assembly 13, thereby releasing the locking state of the frame assembly 1. At this point, the whole vehicle is unlocked. At this time, under the auxiliary action of gravity and the vehicle folding assist elastic assembly 7, the automatic folding operation of the whole vehicle is realized.

[0061] When the seat assembly 2 is installed forwardly relative to the frame assembly 1, it has a wide field of vision and is convenient for parent-child interaction; when the seat assembly 2 is installed reversely relative to the frame assembly 1, it can effectively protect the spine and brain of infants and young children. Regardless of which installation method is adopted, the above operation can make the whole vehicle automatically folded with one button and effectively reduce the size of the baby carriage.

[0062] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A linked automatically foldable baby stroller having an unfolded state and a folded state, the baby stroller comprising a frame assembly (1) and a seat assembly (2), the seat assembly (2) being coaxially rotatably assembled with the frame assembly (1), characterized in that: The frame assembly (1) comprises a push rod assembly (11), a rear bracket assembly (13), a front bracket assembly (15), and a frame joint (18); the seat assembly (2) comprises a backrest (21), a seat plate (22), an armrest (23), and a seat joint (26); A unlocking operating member (24) is provided at the bottom end of the seat joint (26); A frame unlocking seat (4) is rotatably mounted on the inner side of the frame joint (18); The frame unlocking seat (4) is provided with a frame unlocking knob (41), and a lock cover (43) is fixedly buckled on the frame unlocking knob (41), the lock cover (43) is arranged corresponding to the outer side of the seat joint (26), and the lock cover (43) is provided with a plug-in slot (431) for adapting and plugging the unlocking operating member (24); A first locking element (3) for locking and unlocking the frame assembly (1) is provided inside the frame joint (18); In the unfolded state, the inner side of the frame unlocking knob (41) abuts against the first locking element (3) via a transmission member (6).

2. A linkage type automatically foldable baby stroller according to claim 1, characterized in that: When the seat assembly (2) is in a folded state, the seat assembly (2) is rotated to drive the frame unlocking seat (4) to rotate relative to the frame assembly (1), and the frame unlocking knob (41) pushes the transmission member (6) to disengage and slide axially toward the outside of the frame joint (18), so that the first locking element (3) enters the joint of the rear bracket assembly (13), thereby unlocking the frame assembly (1).

3. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: A second locking element (5) for locking and unlocking the seat assembly (2) is provided inside the seat joint (26); the backrest (21) and the armrest (23) are locked or unlocked relative to the seat plate (22) via the second locking element (5).

4. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: The bottom end of the frame unlocking knob (41) is also in contact with a spring (42), and the frame unlocking knob (41) and the spring (42) correspond one to one to form a set of unlocking and resetting mechanisms, and the two sets of unlocking and resetting mechanisms are arranged inside the frame unlocking seat (4) and are symmetrically distributed with respect to the vertical center line of the frame unlocking seat (4).

5. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: The frame assembly (1) further comprises a convex adapter (10), and the corresponding seat assembly (2) further comprises a concave adapter (20).

6. The linkage type automatically foldable baby stroller according to claim 5, characterized in that: The convex adapter (10) and the concave adapter (20) constitute an adapter connector for disassembling a frame assembly (1) and a seat assembly (2); one of the convex adapter (10) and the concave adapter (20) is embedded in the inner side of the frame joint (18), and the other is embedded in the outer side of the seat joint (26).

7. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: The upper portion of the push rod assembly (11) is provided with a push rod extension portion, through which the push rod extension portion and a U-shaped connecting rod (12) are connected, and the two ends of the connecting rod (12) are respectively plugged and fixed to the push rod extension portions on both sides.

8. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: The rear support assembly (13) extends from top to bottom in an inclined state backwards, and a rear wheel assembly (14) is provided at the bottom of the rear support assembly (13); the front support assembly (15) extends from top to bottom in an inclined state forwards, and a front wheel assembly (16) is provided at the bottom of the front support assembly (15).

9. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: A vehicle folding assist elastic component (8) is provided between the rear support component (13) and the front support component (15).

10. The linkage type automatically foldable baby stroller according to claim 1, characterized in that: A curtain frame (25) for mounting a sunshade curtain is provided on the backrest (21), and a backrest handle (212) is also provided at the top of the backrest (21). The backrest handle (212) is connected to the second locking element (5) via a traction wire hidden inside the backrest (21).

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