Simple folding bicycle

Abstract

The utility model relates to the technical field of folding bicycles, in particular to a simple folding bicycle which is simple in structure, elegant and attractive in appearance, reasonable in structure, high in stability, easy to operate, small in folding size, flexible in rotation, multifunctional, high in applicability, easy and convenient to operate, capable of being folded through one key, easy to fold, low in cost and easy to carry. Comprising a push handle assembly, a front foot assembly, a seat frame assembly and a moving part, the push handle assembly is movably connected with the front foot assembly, the front foot assembly is installed on the seat frame assembly, and the moving part is installed at the bottom of the seat frame assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of folding vehicles, and in particular to a simple folding vehicle. Background Technology

[0002] Strollers offer great convenience for adults to carry small children during outdoor activities. For example, the children's stroller disclosed in prior art announcement number CN205952040U includes a stroller frame, a front wheel assembly located at the front bottom of the stroller frame, a rear wheel assembly located at the rear bottom of the stroller frame, and a seat assembly detachably attached to the stroller frame. When the seat assembly is attached to the stroller frame, the children's stroller has first and second usage states. In the first usage state, the seat assembly is fixedly mounted on the stroller frame, and the children's stroller is used as a regular stroller. In the second usage state, the seat assembly can swing back and forth on the stroller frame, and the children's stroller is used as a children's swing. However, similar seat cushions on the market have complex structures, poor operational flexibility, poor stability, unreasonable appearance, and are difficult to open and fold. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a simple folding vehicle with a simple structure, beautiful and elegant appearance, reasonable structure, strong stability, simple operation, small folding volume, flexible rotation, strong multi-functional applicability, simple and convenient operation, one-button folding, simple folding, low cost, and easy to carry.

[0004] This utility model discloses a simple folding cart, including a push handle assembly, a front leg assembly, a seat frame assembly, and a moving part. The push handle assembly is movably connected to the front leg assembly, the front leg assembly is mounted on the seat frame assembly, and the moving part is installed at the bottom of the seat frame assembly. The moving part enables the cart to move, while the front leg assembly and push handle assembly support and fix the seat, and can also raise the canopy for sun protection. The seat frame assembly ensures bottom stability, and pressing the push handle assembly allows for one-button folding. The cart is easy to fold, has a simple structure, a stylish and attractive appearance, a reasonable structure, strong stability, simple operation, a small folding size, and flexible rotation.

[0005] Preferably, the push handle assembly includes a double-lock button, a handlebar button, a tension wheel, an upper handlebar folding mechanism, a folding positioning component, and a handle. A double-lock button is mounted on the upper part of the handle, and a handlebar button is mounted on top of the double-lock button. A pull rope is installed inside the handle. An upper handlebar folding mechanism is mounted on the lower part of the handle via screws. A tension wheel is installed inside the upper handlebar folding mechanism. One end of the pull rope is connected to the double-lock button, and the other end is connected to the tension wheel. A folding positioning component is mounted on the outer ring of the tension wheel. Pressing the double-lock button and then pressing the handlebar button with a finger causes the handlebar button to move, which in turn moves the tension wheel back and forth on the upper handlebar folding mechanism via the pull rope, thus completing the folding operation.

[0006] Preferably, the front leg assembly includes a folding wheel, a lower handlebar folding mechanism, a sliding sleeve, and a front leg tube. The lower handlebar folding mechanism is screwed to the left end of the front leg tube. The folding wheel is installed inside the lower handlebar folding mechanism. The lower handlebar folding mechanism is rotatably connected to the upper handlebar folding mechanism, so that the step of the folding positioning component enters the corresponding groove of the folding wheel and rotates to connect them. Since the folding positioning component does not move in the upper groove of the upper handlebar folding mechanism, when the handlebar and the front leg tube rotate, the folding positioning component drives the folding wheel to rotate, so that the handlebar and the front leg tube can be folded.

[0007] Preferably, the seat frame assembly includes a large joint, a rear leg tube, a seat frame tube, a seat frame support tube, a sliding support, a positioning slider, a positioning element, a positioning spring, a rear positioning element, and a bottom support sliding tube. The large joint is mounted on the front leg tube and is rotatably connected to the rear leg tube by rivets. The upper end of the large joint is rotatably connected to the seat frame support tube by rivets. The top of the seat frame support tube is rotatably connected to the right end of the seat frame tube by rivets, and the left end of the seat frame tube is rotatably connected to the top of the rear leg tube by rivets. A sliding sleeve is installed in the middle of the lower end of the front leg tube, and sliding supports are installed at both ends of the sliding sleeve. The sliding sleeve is rotatably mounted on the positioning slider. A groove is opened at the top of the bottom support sliding tube, and the positioning slider is slidably mounted on the bottom support. Inside the groove of the sliding tube, the positioning element is located at the right end of the groove, and a positioning element compression spring is installed on the top of the positioning element. The rear positioning element is installed on the right side of the groove. The rear leg tube rotates downward on the large joint component, adjusting the angle between the rear leg tube and the front leg tube, so that the rear leg tube pulls the seat frame tube and the seat frame support tube to rotate, thus folding the front leg tube, the rear leg tube, and the seat frame tube. When folding, the front leg tube moves to the left, pushing the positioning sliding element to slide in the groove. The positioning sliding element, the positioning element, and the positioning element compression spring constitute the front and rear sliding assembly. When the positioning element is inserted into the bottom groove of the bottom support sliding tube, it limits the positioning sliding element. When the positioning element is disengaged from the groove of the bottom support sliding tube, the positioning sliding element can move. The structure is simple, the stability is strong, and the operation is simple.

[0008] Preferably, the moving parts include a foot pedal, a brake lever, a brake pipe, a rear wheel assembly, and a front wheel assembly. The brake lever is rotatably mounted on the right end of the base support sliding tube, the brake pipe is rotatably mounted on the middle of the brake lever, the lower end of the rear foot pedal is rotatably mounted on the brake pipe, and the rear wheel assembly is mounted on both the front and rear ends of the brake pipe. The foot pedal is mounted on the left end of the base support sliding tube, and the front wheel assembly is rotatably mounted on both the front and rear ends of the bottom of the foot pedal. When the rear foot pedal moves, its right end rotates on the brake pipe, and the rear wheel assembly and the front wheel assembly can drive the equipment to move. Pressing the brake lever can limit the brake pipe and lock the vehicle body to ensure safety.

[0009] Preferably, it also includes a front canopy rib and a rear canopy rib. The front canopy rib is movably installed on the upper handle folding mechanism, and the rear canopy rib is installed on the upper part of the handle. The front and rear canopy ribs can support the tarpaulin, and rotating the front canopy rib can open and close the canopy.

[0010] Compared with the prior art, the advantages of this utility model are as follows: the moving parts enable the cart to move, the front leg assembly and push handle assembly support and fix the seat, and the canopy can be raised for sunshade. The seat frame assembly ensures bottom stability, and the push handle assembly can be pressed to fold the cart with one button. The cart is easy to fold, has a simple structure, a beautiful and elegant appearance, a reasonable structure, strong stability, simple operation, small folding size, and flexible rotation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the folded structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the upper part of the structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the lower half of the structure of this utility model;

[0015] Figure 5 This is a schematic diagram of the frame assembly structure of this utility model;

[0016] Figure 6 This is a structural schematic diagram of the push handle assembly and the front foot assembly of this utility model;

[0017] The following are labels in the attached diagram: 1. Double lock button; 2. Handlebar button; 3. Extension wheel; 4. Upper handlebar folding; 5. Collapse positioning component; 6. Folding wheel; 7. Lower handlebar folding; 8. Front canopy rib; 9. Handlebar; 10. Large joint component; 11. Sliding sleeve; 12. Front leg tube; 13. Rear leg tube; 14. Seat frame tube; 15. Rear canopy rib; 16. Seat frame support tube; 17. Sliding support component; 18. Foot pedal; 19. Positioning sliding component; 20. Positioning component; 21. Positioning component compression spring; 22. Rear positioning component; 23. Base support sliding tube; 24. Brake lever; 25. Brake tube; 26. Rear wheel assembly; 27. Front wheel assembly. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] like Figures 1 to 6As shown, a double-lock button 1 is installed on the upper part of the handlebar 9, and a handlebar button 2 is installed on the double-lock button 1. A pull rope is installed inside the handlebar 9. An upper handlebar folding 4 is installed at the lower part of the handlebar 9 by screws. A tension pulley 3 is installed inside the upper handlebar folding 4. One end of the pull rope is connected to the double-lock button 1, and the other end of the pull rope is connected to the tension pulley 3. A retraction positioning piece 5 is installed on the outer ring of the tension pulley 3. A lower handlebar folding 7 is installed at the left end of the front foot tube 12 by screws. Folding wheel 6 is installed inside the folding handlebar 7. The lower folding handlebar 7 is rotatably connected to the upper folding handlebar 4, so that the step of the folding positioning piece 5 enters the corresponding groove of the folding wheel 6 and rotates to connect it. The large joint piece 10 is installed on the front leg tube 12. The large joint piece 10 is rotatably connected to the rear leg tube 13 by a rivet. The upper end of the large joint piece 10 is rotatably connected to the seat frame support tube 16 by a rivet. The top of the seat frame support tube 16 is rotatably connected to the right end of the seat frame tube 14 by a rivet. The left end of the seat frame tube 14 is open. The front foot tube 12 is rotatably connected to the top of the rear foot tube 13 by a rivet. A sliding sleeve 11 is installed in the middle of the lower end of the front foot tube 12. Sliding support members 17 are installed at the front and rear ends of the sliding sleeve 11. The sliding sleeve 11 is rotatably installed on the positioning sliding member 19. A tube groove is opened at the top of the bottom support sliding tube 23. The positioning sliding member 19 is slidably installed in the tube groove of the bottom support sliding tube 23. The positioning member 20 is located at the right end of the tube groove. A positioning member compression spring 21 is installed at the top of the positioning member 20. The rear positioning member 22 is installed on the right side of the tube groove. The brake lever 24 is rotatably installed at the right end of the bottom support sliding tube 23. The brake tube 25 is rotatably installed in the middle of the brake lever 24. The lower end of the rear foot tube 13 is rotatably installed on the brake tube 25. The rear wheel assembly 26 is installed at the front and rear ends of the brake tube 25. The foot pedal 18 is installed at the left end of the bottom support sliding tube 23. The front wheel assembly 27 is rotatably installed at the front and rear ends of the bottom of the foot pedal 18. The front canopy 8 is movably installed on the upper handlebar folding 4. The rear canopy 15 is installed on the upper part of the handlebar 9.

[0020] Press the double-lock button 1, then press the handlebar button 2 with your finger. The handlebar button 2 moves, pulling the rope to drive the tension wheel 3, causing it to move back and forth on the upper handlebar folding section 4, completing the folding operation. Since the folding positioning component 5 is stationary in the upper groove of the upper handlebar folding 4, when the handlebar 9 and the front leg tube 12 rotate, the folding positioning component 5 drives the folding wheel 6 to rotate, completing the folding of the handlebar 9 and the front leg tube 12. The rear leg tube 13 rotates downward on the large joint component 10, adjusting the angle between the rear leg tube 13 and the front leg tube 12, causing the rear leg tube 13 to pull the seat frame tube 14 and the seat frame support tube 16 to rotate, completing the folding of the front leg tube 12, the rear leg tube 13, and the seat frame tube 14. During folding, the front leg tube 12 moves to the left, pushing the positioning slide. The moving part 19 slides in the tube groove. The positioning sliding part 19, the positioning part 20 and the positioning part compression spring 21 constitute the front and rear sliding assembly. When the positioning part 20 is inserted into the bottom tube groove of the bottom support sliding tube 23, it limits the positioning sliding part 19. When the positioning part 20 is disengaged from the tube groove of the bottom support sliding tube 23, the positioning sliding part 19 can move. The structure is simple, the stability is strong and the operation is simple. When the rear foot tube 13 moves, the right end rotates on the brake tube 25. The rear wheel set 26 and the front wheel set 27 can drive the equipment to move. Pressing the brake lever 24 can limit the brake tube 25 and lock the vehicle body to ensure safety. The tarpaulin can be supported by the front awning rib 8 and the rear awning rib 15. Rotating the front awning rib 8 can open and close the awning.

[0021] like Figures 1 to 6 As shown, in operation, the simple folding bicycle of this utility model involves pressing the double-lock button 1 and then pressing the handle button 2 with a finger. The handle button 2 moves, which in turn drives the tension wheel 3 via the pull rope, causing it to move back and forth on the inclined platform of the upper handle folding 4. Since the folding positioning component 5 is stationary in the upper groove of the upper handle folding 4, when the handle 9 and the front leg tube 12 rotate, the folding positioning component 5 drives the folding wheel 6 to rotate, thus completing the folding of the handle 9 and the front leg tube 12. The rear leg tube 13 rotates downward on the large joint component 10, adjusting the angle between the rear leg tube 13 and the front leg tube 12, causing the rear leg tube 13 to pull the seat frame tube 14 and the seat frame support tube 16 to rotate, thus folding the front leg tube 12. 2. The rear leg tube 13 and the seat tube 14 are folded. When folding, the front leg tube 12 moves to the left, pushing the positioning slider 19 to slide in the tube groove. The positioning slider 19, the positioning element 20 and the positioning element compression spring 21 constitute the front and rear sliding assembly. When the positioning element 20 is inserted into the bottom tube groove of the bottom support sliding tube 23, it limits the positioning slider 19. When the positioning element 20 is disengaged from the tube groove of the bottom support sliding tube 23, the positioning slider 19 can move. When the rear leg tube 13 moves, the right end rotates on the brake tube 25. The rear wheel assembly 26 and the front wheel assembly 27 can drive the equipment to move. Pressing the brake lever 24 can limit the brake tube 25 and lock the vehicle body.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A simple folding cart, characterized in that, It includes a push handle assembly, a front foot assembly, a seat frame assembly, and a moving part. The push handle assembly is movably connected to the front foot assembly. The front foot assembly is mounted on the seat frame assembly. The moving part is mounted on the bottom of the seat frame assembly. The push handle assembly includes a double-lock button (1), a handle button (2), a tension wheel (3), an upper handle folding mechanism (4), a folding positioning component (5), and a handle (9). The upper handle (9) is equipped with a double-lock button (1), and the handle button (2) is installed on the double-lock button (1). A pull rope is provided inside the handle (9). The lower part of the handle (9) is equipped with an upper handle folding mechanism (4) by screws. The tension wheel (3) is installed inside the upper handle folding mechanism (4). One end of the pull rope is connected to the double-lock button (1), and the other end of the pull rope is connected to the tension wheel (3). The folding positioning component (5) is installed on the outer ring of the tension wheel (3). The front foot assembly includes a folding wheel (6), a lower handlebar fold (7), a sliding sleeve (11), and a front foot tube (12). The lower handlebar fold (7) is installed on the left end of the front foot tube (12) by screws. The folding wheel (6) is installed inside the lower handlebar fold (7). The lower handlebar fold (7) is rotatably connected to the upper handlebar fold (4), so that the step of the vehicle positioning component (5) enters the corresponding groove of the folding wheel (6) and rotates and connects them.

2. The simple folding vehicle as described in claim 1, characterized in that, The seat frame assembly includes a large joint (10), a rear leg tube (13), a seat frame tube (14), a seat frame support tube (16), a sliding support (17), a positioning slide (19), a positioning element (20), a positioning element compression spring (21), a rear positioning element (22), and a bottom support slide tube (23). The large joint (10) is mounted on the front leg tube (12). The large joint (10) is rotatably connected to the rear leg tube (13) by rivets. The upper end of the large joint (10) is rotatably connected to the seat frame support tube (16) by rivets. The top of the seat frame support tube (16) is rotatably connected to the right end of the seat frame tube (14) by rivets. The left end of the seat tube (14) is rotatably connected to the top of the rear leg tube (13) by a rivet. A sliding sleeve (11) is installed in the middle of the lower end of the front leg tube (12). Sliding support (17) is installed at both ends of the sliding sleeve (11). The sliding sleeve (11) is rotatably installed on the positioning sliding part (19). A tube groove is opened at the top of the bottom support sliding tube (23). The positioning sliding part (19) is slidably installed in the tube groove of the bottom support sliding tube (23). The positioning part (20) is located at the right end of the tube groove. A positioning spring (21) is installed on the top of the positioning part (20). The rear positioning part (22) is installed on the right side of the tube groove.

3. The simple folding vehicle as described in claim 2, characterized in that, The moving parts include a foot pedal (18), a brake lever (24), a brake pipe (25), a rear wheel assembly (26), and a front wheel assembly (27). The brake lever (24) is rotatably mounted on the right end of the bottom support sliding tube (23). The brake pipe (25) is rotatably mounted on the middle part of the brake lever (24). The lower end of the rear foot tube (13) is rotatably mounted on the brake pipe (25). The rear wheel assembly (26) is mounted on both the front and rear ends of the brake pipe (25). The foot pedal (18) is mounted on the left end of the bottom support sliding tube (23). The front wheel assembly (27) is rotatably mounted on both the front and rear ends of the bottom of the foot pedal (18).

4. The simple folding vehicle as described in claim 1, characterized in that, It also includes a front canopy rib (8) and a rear canopy rib (15). The front canopy rib (8) is movably installed on the upper handle folding (4), and the rear canopy rib (15) is installed on the upper part of the handle (9).

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