Rear bracket of electric bicycle

Abstract

The utility model discloses a rear bracket of an electric bicycle, which belongs to the technical field of electric bicycles and comprises a rear supporting rectangular frame, a transverse supporting rod is arranged in the rear supporting rectangular frame, and a plurality of transverse connecting columns are slidably connected in the transverse supporting rod. One end of the transverse connecting column is rotationally connected with an L-shaped rotating piece through a pin shaft, a longitudinal connecting rod is fixed to the end, away from the transverse connecting column, of the L-shaped rotating piece, a moving mechanism used for moving the transverse connecting column is arranged at the bottom of the rear supporting rectangular frame, and a transverse sliding block is fixed to the end, away from the L-shaped rotating piece, of the transverse connecting column. Through movement of the L-shaped rotating part in the transverse supporting rod, the carrying range can be effectively expanded, meanwhile, convenience and safety of a user during operation are guaranteed, and through rotation of the L-shaped rotating part, the adaptability of the device to cargoes in different shapes can be further improved.

Description

Technical Field

[0001] This utility model belongs to the field of electric bicycle technology, specifically relating to a rear bracket for electric bicycles. Background Technology

[0002] Electric bicycles, due to their lightweight and environmentally friendly advantages, have become a common mode of transportation in modern cities, especially suitable for short-distance travel. However, with the increasing demand for electric bicycles, their transport capacity has become an increasingly important issue. In traditional electric bicycle designs, the rear rack is typically used for carrying goods;

[0003] Existing electric bicycle rear rack designs are typically fixed structures, whose size and shape are not easily adaptable to goods of different sizes and shapes. The support structure is generally a single horizontal support method, which does not have sufficient flexibility to support the goods. This not only affects the safety of the goods, but also limits the application scenarios of electric bicycles. To address this, we have designed an electric bicycle rear rack to provide an alternative technical solution to the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a rear support for electric bicycles to solve the problems mentioned in the background section regarding the use of existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rear support frame for an electric bicycle, comprising a rectangular rear support frame, wherein a transverse support rod is provided inside the rectangular rear support frame, and a plurality of transverse connecting columns are slidably connected inside the transverse support rod, wherein one end of the transverse connecting column is rotatably connected to an L-shaped rotating component via a pin, and a longitudinal connecting rod is fixed to the end of the L-shaped rotating component away from the transverse connecting column, and a moving mechanism for moving the transverse connecting columns is provided at the bottom of the rectangular rear support frame.

[0006] Preferably, a horizontal sliding block is fixed at the end of the horizontal connecting column away from the L-shaped rotating member, and a rectangular sliding groove adapted to the horizontal sliding block is opened inside the horizontal support rod. The horizontal sliding block and the horizontal support rod are slidably connected through the rectangular sliding groove.

[0007] Preferably, the moving mechanism includes a longitudinal rotating column, which is rotatably connected to the interior of the rear support rectangular frame via bearings. A first bevel gear is fixed to one end of the longitudinal rotating column, and a circular rotating component is fixed to the other end. A second bevel gear is meshed with one end of the first bevel gear, and a transverse rotating column is fixed inside the second bevel gear. A first transverse threaded rod is fixed to one side of the transverse rotating column, and a second transverse threaded rod is fixed to the other side of the transverse rotating column. The threads of the first and second transverse threaded rods have opposite directions.

[0008] Preferably, the outer side of the transverse rotating column is also rotatably connected to a longitudinal support plate via a bearing, and the longitudinal support plate is close to one end of the rear support rectangular frame and is fixedly connected to the rear support rectangular frame.

[0009] Preferably, the moving mechanism further includes a transverse sliding plate, and the outer sides of the first transverse threaded rod and the second transverse threaded rod are both threadedly connected to the transverse sliding plate. One side of the transverse sliding plate is rotatably connected to an inclined rotating plate via a pin, and one side of the inclined rotating plate is rotatably connected to a longitudinal rotating rod. The longitudinal rotating rod passes through the interior of the L-shaped rotating member and is fixedly connected to the L-shaped rotating member.

[0010] Preferably, the longitudinal support plate is further fixed with two transverse light rods inside, and the transverse sliding plate is provided with a circular through hole adapted to the transverse light rods. The transverse light rods are located inside the circular through hole and are slidably connected to the transverse sliding plate through the circular through hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention effectively expands the carrying capacity by moving the L-shaped rotating component inside the horizontal support rod, while ensuring user convenience and safety during operation. The rotation of the L-shaped rotating component further enhances the adaptability of the device to goods of different shapes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the longitudinal rotating column and the circular rotating component of this utility model;

[0015] Figure 3 This is a schematic diagram of the longitudinal connecting rod and the L-shaped rotating component of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the transverse support rod of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first transverse threaded rod and the second transverse threaded rod of this utility model;

[0018] Figure 6 This is a schematic diagram of the transverse rotating column and the second bevel gear of this utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the first transverse threaded rod and the transverse sliding plate of this utility model.

[0020] In the diagram: 1. Rear support rectangular frame; 2. Transverse support rod; 3. Longitudinal connecting rod; 4. Circular rotating component; 5. L-shaped rotating component; 6. Transverse connecting column; 7. Transverse sliding block; 8. Longitudinal rotating rod; 9. Longitudinal rotating column; 10. First bevel gear; 11. Second bevel gear; 12. Transverse rotating column; 13. First transverse threaded rod; 14. Second transverse threaded rod; 15. Transverse smooth rod; 16. Longitudinal support plate; 17. Transverse sliding plate; 18. Angled rotating plate. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-7 An electric bicycle rear support bracket includes a rectangular rear support frame 1. A transverse support rod 2 is provided inside the rectangular rear support frame 1. Multiple transverse connecting columns 6 are slidably connected inside the transverse support rod 2. One end of the transverse connecting column 6 is rotatably connected to an L-shaped rotating part 5 via a pin. A longitudinal connecting rod 3 is fixed to the end of the L-shaped rotating part 5 away from the transverse connecting column 6. A moving mechanism for moving the transverse connecting column 6 is provided at the bottom of the rectangular rear support frame 1.

[0023] A transverse sliding block 7 is fixed at the end of the transverse connecting column 6 away from the L-shaped rotating part 5. A rectangular groove adapted to the transverse sliding block 7 is opened inside the transverse support rod 2. The transverse sliding block 7 and the transverse support rod 2 are slidably connected through the rectangular groove. The rectangular groove allows the transverse sliding block 7 to slide inside the transverse support rod 2. When the transverse connecting column 6 moves, the transverse sliding block 7 can slide inside the transverse support rod 2.

[0024] The moving mechanism includes a longitudinal rotating column 9. The longitudinal rotating column 9 is rotatably connected to the interior of the rear support rectangular frame 1 via bearings. A first bevel gear 10 is fixed to one end of the longitudinal rotating column 9, and a circular rotating component 4 is fixed to the other end of the longitudinal rotating column 9. A second bevel gear 11 is meshed with one end of the first bevel gear 10. A transverse rotating column 12 is fixed inside the second bevel gear 11. A first transverse threaded rod 13 is fixed to one side of the transverse rotating column 12, and a second transverse threaded rod 14 is fixed to the other side of the transverse rotating column 12. The threads of the first transverse threaded rod 13 and the second transverse threaded rod 14 have opposite directions.

[0025] The outer side of the transverse rotating column 12 is also rotatably connected to the longitudinal support plate 16 via a bearing. The longitudinal support plate 16 is close to one end of the rear support rectangular frame 1 and is fixedly connected to the rear support rectangular frame 1. The longitudinal support plate 16 provides support for the transverse rotating column 12, allowing the transverse rotating column 12 to rotate better inside the longitudinal support plate 16.

[0026] Here, the circular rotating component 4 is rotated, and the rotation of the circular rotating component 4 causes the longitudinal rotating column 9 to drive the first bevel gear 10 to rotate. The rotation of the first bevel gear 10 causes the second bevel gear 11 to rotate, and the rotation of the second bevel gear 11 causes the transverse rotating column 12 to drive the first transverse threaded rod 13 and the second transverse threaded rod 14 to rotate.

[0027] The moving mechanism also includes a transverse sliding plate 17. The outer sides of the first transverse threaded rod 13 and the second transverse threaded rod 14 are threaded with the transverse sliding plate 17. One side of the transverse sliding plate 17 is rotatably connected to an inclined rotating plate 18 via a pin. One side of the inclined rotating plate 18 is rotatably connected to a longitudinal rotating rod 8. The longitudinal rotating rod 8 passes through the interior of the L-shaped rotating member 5 and is fixedly connected to the L-shaped rotating member 5. Thus, the movement of the transverse sliding plate 17 enables the inclined rotating plate 18 to move. The movement of the inclined rotating plate 18 enables the L-shaped rotating member 5 to rotate around the connection point between the L-shaped rotating member 5 and the transverse connecting column 6 as the center through the longitudinal rotating rod 8.

[0028] The longitudinal support plate 16 is also fixed with two transverse light rods 15. The transverse sliding plate 17 is provided with a circular through hole that matches the transverse light rod 15. The transverse light rod 15 is located inside the circular through hole and is slidably connected to the transverse sliding plate 17 through the circular through hole. The circular through hole allows the transverse sliding plate 17 to slide on the outside of the second transverse threaded rod 14, thereby allowing the second transverse threaded rod 14 to guide the movement trajectory of the transverse sliding plate 17.

[0029] Here, the rotation of the first transverse threaded rod 13 and the second transverse threaded rod 14 allows the transverse sliding plate 17 to slide outside the second transverse threaded rod 14. The movement of the transverse sliding plate 17 allows the inclined rotating plate 18 to move, thereby allowing the transverse sliding block 7 to move inside the transverse support rod 2, and allowing the L-shaped rotating member 5 to move out of the transverse support rod 2, thereby increasing the load-bearing range of the device. When the transverse sliding block 7 cannot move inside the transverse support rod 2, the continuous movement of the transverse sliding plate 17, through the inclined rotating plate 18, allows the longitudinal rotating rod 8 to drive the L-shaped rotating member 5 to rotate around the connection between the L-shaped rotating member 5 and the transverse connecting column 6, thereby allowing the L-shaped rotating member 5 to rotate towards the top of the transverse support rod 2 to adapt to different load requirements.

[0030] By moving the L-shaped rotating part 5 inside the transverse support rod 2, the carrying range can be effectively expanded, while ensuring the convenience and safety of the user during operation. Through the rotation of the L-shaped rotating part 5, the device can further improve its adaptability to goods of different shapes.

[0031] Working principle: The rotating circular component 4 rotates, which causes the longitudinal rotating column 9 to drive the first bevel gear 10 to rotate. The rotation of the first bevel gear 10 causes the second bevel gear 11 to rotate. The rotation of the second bevel gear 11 causes the transverse rotating column 12 to drive the first transverse threaded rod 13 and the second transverse threaded rod 14 to rotate.

[0032] The rotation of the first transverse threaded rod 13 and the second transverse threaded rod 14 allows the transverse sliding plate 17 to slide outside the second transverse threaded rod 14. The movement of the transverse sliding plate 17 allows the inclined rotating plate 18 to move, thereby allowing the transverse sliding block 7 to move inside the transverse support rod 2, and allowing the L-shaped rotating member 5 to move out of the transverse support rod 2, thereby increasing the load-bearing range of the device. When the transverse sliding block 7 cannot move inside the transverse support rod 2, the continuous movement of the transverse sliding plate 17, through the inclined rotating plate 18, allows the longitudinal rotating rod 8 to drive the L-shaped rotating member 5 to rotate around the connection between the L-shaped rotating member 5 and the transverse connecting column 6, thereby allowing the L-shaped rotating member 5 to rotate towards the top of the transverse support rod 2 to adapt to different load requirements.

[0033] 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 rear support bracket for an electric bicycle, characterized in that: The rear support rectangular frame (1) includes a transverse support rod (2) inside the rear support rectangular frame (1). Multiple transverse connecting columns (6) are slidably connected inside the transverse support rod (2). One end of the transverse connecting column (6) is rotatably connected to an L-shaped rotating part (5) via a pin. The end of the L-shaped rotating part (5) away from the transverse connecting column (6) is fixed with a longitudinal connecting rod (3). The bottom of the rear support rectangular frame (1) is provided with a moving mechanism for moving the transverse connecting column (6).

2. The electric bicycle rear support bracket according to claim 1, characterized in that: The transverse connecting column (6) is fixed with a transverse sliding block (7) at one end away from the L-shaped rotating part (5). The transverse support rod (2) has a rectangular sliding groove inside that is adapted to the transverse sliding block (7). The transverse sliding block (7) and the transverse support rod (2) are slidably connected by the rectangular sliding groove.

3. The electric bicycle rear support according to claim 1, characterized in that: The moving mechanism includes a longitudinal rotating column (9), which is rotatably connected to the interior of the rear support rectangular frame (1) via bearings. A first bevel gear (10) is fixed at one end of the longitudinal rotating column (9), and a circular rotating component (4) is fixed at the other end of the longitudinal rotating column (9). A second bevel gear (11) is meshed with one end of the first bevel gear (10). A transverse rotating column (12) is fixed inside the second bevel gear (11). A first transverse threaded rod (13) is fixed on one side of the transverse rotating column (12), and a second transverse threaded rod (14) is fixed on the other side of the transverse rotating column (12). The threads of the first transverse threaded rod (13) and the second transverse threaded rod (14) have opposite directions.

4. The electric bicycle rear support according to claim 3, characterized in that: The outer side of the transverse rotating column (12) is also rotatably connected to a longitudinal support plate (16) via a bearing. The longitudinal support plate (16) is close to one end of the rear support rectangular frame (1) and is fixedly connected to the rear support rectangular frame (1).

5. The electric bicycle rear support according to claim 4, characterized in that: The moving mechanism also includes a transverse sliding plate (17). The outer sides of the first transverse threaded rod (13) and the second transverse threaded rod (14) are threaded with the transverse sliding plate (17). One side of the transverse sliding plate (17) is rotatably connected to an oblique rotating plate (18) via a pin. One side of the oblique rotating plate (18) is rotatably connected to a longitudinal rotating rod (8). The longitudinal rotating rod (8) passes through the interior of the L-shaped rotating member (5) and is fixedly connected to the L-shaped rotating member (5).

6. The rear support bracket for an electric bicycle according to claim 5, characterized in that: The longitudinal support plate (16) is also fixed with two transverse light rods (15). The transverse sliding plate (17) has a circular through hole adapted to the transverse light rods (15). The transverse light rods (15) are located inside the circular through hole and are slidably connected to the transverse sliding plate (17) through the circular through hole.

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