A three-fold automatic folding baby stroller

Abstract

The utility model relates to the field of baby stroller, specifically disclose a three -fold automatic folding baby stroller, including frame, big joint subassembly and small joint subassembly, frame includes front leg pipe, rear leg pipe, handle pipe and push handle pipe, big joint subassembly includes leg joint, handle joint, first compression spring, first gear and first top tooth, small joint subassembly includes lower joint, upper joint, second compression spring, second gear, second top tooth and steel wire seat, steel wire seat and second top tooth inlay the connection, first top tooth and steel wire seat between the connection has first steel wire, and push handle pipe is equipped with the car button, and the car button is connected with second top tooth between second steel wire, the utility model discloses through first steel wire and second steel wire will big joint subassembly, small joint subassembly and the car button linkage, realize one -key unlocking, and can rely on the automatic folding of car body self -gravity after unlocking, convenient operation, safe and reliable, solve the drawback that the car is realized in the prior art by the force of user, multi -step cooperation.

Description

Technical Field

[0001] This utility model relates to the field of baby strollers, specifically a three-fold automatic folding baby stroller. Background Technology

[0002] Existing baby strollers are characterized by their folding and easy storage. Currently, most three-fold baby strollers on the market rely on the user to apply one or more forces to fold the stroller, which is not only cumbersome and inconvenient, but also results in a poor user experience. Utility Model Content

[0003] To address the existing problems, this utility model provides a three-fold automatic folding baby stroller, which can effectively solve the problems mentioned in the background art.

[0004] To solve the above problems, the present invention adopts the following technical solution: A three-fold automatic folding baby stroller is disclosed, which has two states: unfolded and folded. The stroller includes a frame, a large joint assembly, and a small joint assembly. The frame includes a front leg tube, a rear leg tube, a handle tube, and a push handle tube. The large joint assembly includes a leg joint, a handle joint, a first compression spring, a first gear, and a first apex tooth. The small joint assembly includes a lower joint, an upper joint, a second compression spring, a second gear, a second apex tooth, and a wire seat. The wire seat engages with the second apex tooth. A first wire connects the first apex tooth and the wire seat. The push handle tube has a folding button, which is connected to the second apex tooth by a second wire. When folding, pressing the folding button causes the second wire to rotate the second apex tooth. Simultaneously, the wire seat and the second apex tooth rotate synchronously, and the first wire to rotate the first apex tooth. Under the action of gravity, the front leg tube, rear leg tube, handle tube, and push handle tube fold together.

[0005] As a further embodiment of this utility model: the leg joint is provided with a first extension and a second extension, the first extension is rotatably connected to the front leg tube, the second extension is inserted and fixed to the rear leg tube, and the front leg tube, the rear leg tube and the handle joint are connected by a retraction linkage assembly.

[0006] As a further embodiment of this utility model: the retraction linkage assembly includes a front leg connecting piece, a rear leg connecting piece, and a handlebar connecting piece. One end of the front leg connecting piece is rotatably connected to the front leg tube, the other end of the front leg connecting piece is rotatably connected to one end of the rear leg connecting piece, the other end of the rear leg connecting piece is rotatably connected to the rear leg tube, one end of the handlebar connecting piece is rotatably connected to the handlebar joint, and the other end of the handlebar joint is rotatably connected to the middle of the rear leg connecting piece.

[0007] As a further embodiment of this utility model: the frame also includes a seat tube and an armrest tube, the seat tube is located between the front leg tubes and both ends of the seat tube are rotatably connected to the front leg tubes through connecting seats, and the armrest tube is located between the leg joints and both ends of the armrest tube are rotatably connected to the leg joints through armrest seats.

[0008] As a further embodiment of this utility model: the retraction linkage assembly also includes a supporting iron plate, the front leg connecting plate and the connecting seat are rotatably connected to the front leg tube via the same axis, one end of the supporting iron plate is rotatably connected to the connecting seat, and the other end of the supporting iron plate is rotatably connected to the handrail seat.

[0009] As a further improvement of this utility model: the front end of the seat tube after it is unfolded is provided with a leg rest plate, and the bottom of the leg rest plate is movably connected to a support frame, the two ends of the support frame being rotatably connected to the front leg tube.

[0010] As a further improvement of this utility model: a canopy holder is fixed on the handle tube, and a PE strip for the canopy head is fixed on the canopy holder.

[0011] As a further improvement of this utility model: the front leg tubes are connected by a front leg connecting tube, a foot pedal is fixed on the front leg connecting tube, and a front wheel structure is installed at the lower end of the front leg tube.

[0012] As a further improvement of this utility model: the rear leg tubes are connected by a rear leg connecting tube, and a rear wheel structure is installed at the lower end of the rear leg tubes, and a brake pedal is provided on the rear wheel structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model links the large joint assembly, the small joint assembly and the retraction button through the first steel wire and the second steel wire to achieve one-click unlocking, and after unlocking, it can automatically retract by the weight of the vehicle itself. It is convenient to operate, safe and reliable, and solves the drawback of the prior art that relies on the user to exert force and cooperate in multiple steps to retract the vehicle. Attached Figure Description

[0014] Figure 1 A three-dimensional schematic diagram of the overall structure of a three-fold automatic folding baby stroller; Figure 2 This is an exploded view of the overall structure of a three-fold automatic folding baby stroller. Figure 3 An exploded view of the major joint components in a three-fold automatic folding baby stroller; Figure 4 A schematic diagram of the folding linkage component in a three-fold automatic folding baby stroller; Figure 5 This is a schematic diagram of the first state of a three-fold automatic folding baby stroller when it is folded up. Figure 6 This is a schematic diagram of the second state of a three-fold automatic folding baby stroller when it is folded up. Figure 7 This is a schematic diagram of the final state of a three-fold automatic folding baby stroller when it is folded up.

[0015] In the diagram: 1. Front leg tube; 2. Rear leg tube; 3. Handlebar tube; 4. Push handle tube; 5. Large joint assembly; 51. Leg joint; 511. First extension; 512. Second extension; 52. Handlebar joint; 53. First compression spring; 54. First gear; 55. First top tooth; 6. Small joint assembly; 61. Lower joint; 62. Upper joint; 63. Second compression spring; 64. Second gear; 65. Second top tooth; 66. Cable holder; 7. Retract button; 8. Retract linkage. Components; 81. Front leg connecting plate; 82. Rear leg connecting plate; 83. Handlebar connecting plate; 84. Support plate; 9. Seat tube; 10. Handrail tube; 11. Connecting seat; 12. Handrail seat; 13. Leg rest plate; 14. Support frame; 15. Canopy holder; 16. Canopy PE strip; 17. Front leg connecting tube; 18. Foot pedal; 19. Front wheel structure; 20. Rear leg connecting tube; 21. Rear wheel structure; 22. Brake pedal; 23. First steel wire; 24. Second steel wire. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Combination Figures 1 to 7This embodiment describes a three-fold automatic folding baby stroller. The stroller has both unfolded and folded states. It includes a frame, large joint assembly 5, and small joint assembly 6. The frame includes front leg tubes 1, rear leg tubes 2, handle tubes 3, and push handle tubes 4. The front leg tubes 1, rear leg tubes 2, and handle tubes 3 are parallel pairs. The large joint assembly 5 includes leg joints 51, handle joints 52, a first compression spring 53, a first gear 54, and a first push tooth 55. The small joint assembly 6 includes a lower joint 61, an upper joint 62, a second compression spring 63, a second gear 64, a second push tooth 65, and a wire seat 66. The principle of both the large and small joint assemblies is that when the first push tooth 55 or the second push tooth 65 rotates, it pushes the first gear 54 or the second gear 64, causing the first tooth... Wheel 54 or second gear 64 overcomes the elastic force of first compression spring 53 or second compression spring 63 and moves toward leg joint 51 or upper joint 62, so that leg joint 51 separates from handlebar joint 52 or lower joint 61 separates from upper joint 62, thereby realizing rotational unlocking. In this embodiment, wire seat 66 is engaged with second top tooth 65, and first wire 23 is connected between first top tooth 55 and wire seat 66. Push handle tube 4 is provided with retraction button 7, and second wire 24 is connected between retraction button 7 and second top tooth 65. When retracting, press retraction button 7, second wire 24 drives second top tooth 65 to rotate, and wire seat 66 and second top tooth 65 rotate synchronously. First wire 23 drives first top tooth 55 to rotate. Under the action of gravity, front leg tube 1, rear leg tube 2, handlebar tube 3 and push handle tube 4 are retracted together.

[0018] Furthermore, such as Figure 2 , Figure 3 As shown, the leg joint 51 is provided with a first extension 511 and a second extension 512. The first extension 511 is rotatably connected to the front leg tube 1, and the second extension 512 is inserted and fixed to the rear leg tube 2, so that the front leg tube 1 can rotate relative to the rear leg tube 2. The front leg tube 1, the rear leg tube 2 and the handle joint 52 are connected by the retraction linkage assembly 8. Specifically, the retraction linkage assembly 8 includes a front leg connecting piece 81, a rear leg connecting piece 82, and a handlebar connecting piece 83. One end of the front leg connecting piece 81 is rotatably connected to the front leg tube 1, and the other end of the front leg connecting piece 81 is rotatably connected to one end of the rear leg connecting piece 82. The other end of the rear leg connecting piece 82 is rotatably connected to the rear leg tube 2. One end of the handlebar connecting piece 83 is rotatably connected to the handlebar joint 52, and the other end of the handlebar joint 52 is rotatably connected to the middle of the rear leg connecting piece 82. In the locked state, the handlebar connecting piece 83 is low to the rear leg connecting piece 82, thereby making the rear leg connecting piece 82 and the front leg connecting piece 81 stable and preventing the rear leg tube 2 and the front leg tube 1 from folding together.

[0019] Furthermore, such as Figure 1 , Figure 4As shown, the frame also includes a seat tube 9 and an armrest tube 10. The seat tube 9 is located between the front leg tubes 1, and both ends of the seat tube 9 are rotatably connected to the front leg tubes 1 via connecting seats 11. The armrest tube 10 is located between the leg joints 51, and both ends of the armrest tube 10 are rotatably connected to the leg joints 51 via armrest seats 12. The retraction linkage assembly 8 also includes a support plate 84. The front leg connecting plate 81 and the connecting seat 11 are rotatably connected to the front leg tubes 1 via the same axis. One end of the support plate 84 is rotatably connected to the connecting seat 11, and the other end of the support plate 84 is rotatably connected to the armrest seat 12. When locked, the support plate pulls and fixes the armrest tube 10 to prevent the armrest tube 10 from rotating on its own. At the same time, the connecting seat 11 can prevent the seat tube 9 from rotating on its own.

[0020] It is worth noting that all components of the vehicle retraction linkage assembly 8, as well as the rotating connection parts of the handrail seat 12 and the connecting seat 11, are connected by shafts to achieve shaft rotation.

[0021] Furthermore, such as Figure 1 As shown, the front end of the seat tube 9 after it is unfolded is provided with a leg rest plate 13, and the bottom of the leg rest plate 13 is movably connected to a support frame 14. The two ends of the support frame 14 are rotatably connected to the front leg tube 1.

[0022] Furthermore, such as Figure 1 As shown, a canopy bracket 15 is fixed on the handle tube 3, and a canopy head PE strip 16 is fixed on the canopy bracket 15.

[0023] Furthermore, such as Figure 1 As shown, the front leg tubes 1 are connected by a front leg connecting tube 17, a foot pedal 18 is fixed on the front leg connecting tube 17, and a front wheel structure 19 is installed at the lower end of the front leg tubes 1. The rear leg tubes 2 are connected by a rear leg connecting tube 20, and a rear wheel structure 21 is installed at the lower end of the rear leg tubes 2. A brake pedal 22 is provided on the rear wheel structure 21.

[0024] The working principle of this utility model is as follows: When retracting the scooter, press and hold the retract button 7. At this time, the retract button 7 drives the second steel wire 24 to move upward. The other end of the second steel wire 24 drives the second top tooth 65 to rotate. While rotating, the second top tooth 65 moves in the vertical radial direction, thereby pushing away the second gear 64, so that the upper joint 62 and the lower joint 61 are completely disengaged. At the same time, the steel wire seat 66 rotates synchronously and coaxially with the second top tooth 65. The steel wire seat 66 drives the first steel wire 23 to move at the same time, causing the first top tooth 55 to rotate. The first top tooth 55 pushes away the first gear 54. At this time, under the influence of gravity, the handle tube 3 automatically rotates clockwise downward, while the push handle tube 4 automatically rotates counterclockwise upward. The push handle tube 4 and the handle tube 3 rotate downward as a whole under the action of weight.

[0025] When the handlebar tube 3 rotates downwards, the retraction linkage assembly 8 starts working. The handlebar tube 3 rotates downwards under its own weight, and during this downward rotation, it drives the handlebar connecting plate 83 to rotate counterclockwise on the rear leg tube 2. At the same time, as the handlebar connecting plate 83 rotates counterclockwise on the rear leg tube 2, the rear leg connecting plate 82 pulls the front leg connecting plate 81 to rotate clockwise. The front leg connecting plate 81 rotates clockwise on the front leg tube 1. At this time, the front leg tube 1 retracts inwards under the rotation of the front leg connecting plate 81. Simultaneously, the front leg connecting plate 81 is axially connected to the connecting seat 11, and the connecting seat 11 is axially connected to the support plate 84. When the front leg tube 1 retracts inwards, the connecting seat 11 and the support plate 84 together pull the handlebar tube 10 to rotate counterclockwise, thereby causing the handlebar tube 10 to retract inwards, completing the frame retraction.

[0026] After the locking structure is released, the front wheel slides towards the rear wheel through the weight of the handlebar tube 3 and push handle tube 4, and the handlebar tube 10 retracts along the front leg direction, thereby realizing the folding and locking of the entire frame structure. The operation is convenient, safe and reliable, and solves the drawback of the existing technology that relies on the user to exert force and cooperate in multiple steps to fold the bike.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-fold automatic folding baby stroller, the baby stroller having both unfolded and folded states, the baby stroller comprising a frame, large joint components, and small joint components, characterized in that, The frame includes a front leg tube, a rear leg tube, a handlebar tube, and a push handle tube. The large joint assembly includes a leg joint, a handlebar joint, a first compression spring, a first gear, and a first top tooth. The small joint assembly includes a lower joint, an upper joint, a second compression spring, a second gear, a second top tooth, and a wire seat. The wire seat engages with the second top tooth. A first wire connects the first top tooth and the wire seat. The push handle tube has a retraction button. A second wire connects the retraction button to the second top tooth. When retracting the bike, pressing the retraction button causes the second wire to rotate the second top tooth. Simultaneously, the wire seat and the second top tooth rotate synchronously, and the first wire rotates the first top tooth. Under the action of gravity, the front leg tube, rear leg tube, handlebar tube, and push handle tube retract together.

2. The three-fold automatic folding baby stroller according to claim 1, characterized in that, The leg joint is provided with a first extension and a second extension. The first extension is rotatably connected to the front leg tube, and the second extension is inserted and fixed to the rear leg tube. The front leg tube, the rear leg tube and the handle joint are connected by a retraction linkage assembly.

3. A three-fold automatic folding baby stroller according to claim 2, characterized in that, The retraction linkage assembly includes a front leg connecting plate, a rear leg connecting plate, and a handlebar connecting plate. One end of the front leg connecting plate is rotatably connected to the front leg tube, and the other end of the front leg connecting plate is rotatably connected to one end of the rear leg connecting plate. The other end of the rear leg connecting plate is rotatably connected to the rear leg tube. One end of the handlebar connecting plate is rotatably connected to the handlebar joint, and the other end of the handlebar joint is rotatably connected to the middle of the rear leg connecting plate.

4. A three-fold automatic folding baby stroller according to claim 3, characterized in that, The frame also includes a seat tube and an armrest tube. The seat tube is located between the front leg tubes and its two ends are rotatably connected to the front leg tubes via connecting seats. The armrest tube is located between the leg joints and its two ends are rotatably connected to the leg joints via armrest seats.

5. A three-fold automatic folding baby stroller according to claim 4, characterized in that, The retraction linkage assembly also includes a support iron plate. The front leg connecting plate and the connecting seat are rotatably connected to the front leg tube via the same shaft. One end of the support iron plate is rotatably connected to the connecting seat, and the other end of the support iron plate is rotatably connected to the handrail seat.

6. A three-fold automatic folding baby stroller according to claim 5, characterized in that, The front end of the seat tube after it is unfolded is provided with a leg rest plate, and the bottom of the leg rest plate is movably connected to a support frame. The two ends of the support frame are rotatably connected to the front leg tube.

7. A three-fold automatic folding baby stroller according to claim 1, characterized in that, A canopy holder is fixed to the handle tube, and a PE strip for the canopy head is fixed to the canopy holder.

8. A three-fold automatic folding baby stroller according to claim 1, characterized in that, The front leg tubes are connected by a front leg connecting tube, a foot pedal is fixed on the front leg connecting tube, and a front wheel structure is installed at the lower end of the front leg tube.

9. A three-fold automatic folding baby stroller according to claim 1, characterized in that, The rear leg tubes are connected by a rear leg connecting tube, and a rear wheel structure is installed at the lower end of the rear leg tube. The rear wheel structure is equipped with a brake pedal.

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