Electric bicycle frame with goods shelf

Abstract

An electric bicycle frame with a goods shelf comprises a front frame body and a rear frame body, the front frame body comprises a head tube and two front frames symmetrically distributed on the head tube, and a first cavity is formed between the two front frames and the head tube; the rear frame comprises a mounting frame, supporting frames symmetrically distributed on the two sides of the bottom of the mounting frame and a lower fork arranged below the supporting frames, the mounting frame is in a U shape, and a second cavity is formed between the two supporting frames and the mounting frame. Due to the arrangement of the first cavity and the second cavity, a user can load goods conveniently, the user can fix the goods on the mounting frame, the length of the mounting frame is enough, and the driving comfort of the user cannot be influenced by the placement of the goods; the automobile seat is stable in structure and can provide high driving comfort for users.

Description

Technical Field

[0001] The utility model relates to the field of bicycle frames, in particular to an electric bicycle frame with a cargo rack. Background Art

[0002] The existing bicycle frames generally mainly play a role of main support and have no other additional functions. Some existing improvement technologies generally focus on the strength of the frame, making the functions of the frame single. However, with the acceleration of the pace of life, there are more and more fields such as deliverymen using electric vehicles to transport goods. People's demand for electric vehicles with a structure capable of loading goods is increasing. Most electric vehicles either do not have a structure for loading goods or have an unstable and impractical structure. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide an electric bicycle frame with a cargo rack, and the overall structure is stable.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: an electric bicycle frame with a cargo rack, which includes a front frame and a rear frame. The front frame includes a head tube and two front frames symmetrically distributed on the head tube. The front frame sequentially includes a first middle tube, a second middle tube fixedly connected to the first middle tube, a lower tube fixedly connected to the second middle tube, a second front tube fixedly connected to the lower tube, and a first front tube fixedly connected to the second front tube. The front frame is fixedly connected to the head tube from beginning to end. A first cavity is formed between the two front frames and the head tube. A bottom bracket fixedly connected thereto is provided between the two front frames. The bottom bracket is respectively fixedly connected to the second front tube and the lower tube. The rear frame includes a mounting rack, support frames symmetrically distributed on both sides of the bottom of the mounting rack, and a lower fork provided below the support frames. The mounting rack is U-shaped. The two ends of the mounting rack are respectively fixedly connected to two second middle tubes. A first mounting plate fixedly connected thereto is provided on the mounting rack. A first mounting hole for fixing a controller box is provided on the first mounting plate. One end of the support frame is fixedly connected to the second middle tube, and the other end of the support frame is fixedly connected to the mounting rack. A second cavity is formed between the two support frames and the mounting rack. The controller box is fixed in the second cavity. The lower fork includes two symmetrically distributed lower fork tubes. One end of the lower fork tube is hinged to a first hinge seat provided between the two second middle tubes, and the other end of the lower fork tube is fixedly connected to a tail fork. A reinforcing frame fixedly connected thereto is provided on the lower fork tube. A shock absorber is provided between the reinforcing frame and the support frame. One end of the shock absorber is hinged to the support frame, and the other end of the shock absorber is hinged to the reinforcing frame. The structural principle of the utility model: Both the first cavity and the second cavity can be used to store goods, which is convenient for users to transport goods and does not affect the riding comfort of users.

[0005] As an improvement, a second mounting plate is provided on the mounting bracket. The second mounting plate is rectangular. The two ends of the second mounting plate are welded to the frame tube. A second mounting hole capable of being fixedly connected to the seat cushion is provided on the second mounting plate. The second mounting plate and the seat cushion are fixedly connected by a screw.

[0006] As an improvement, the first hinge seat includes a fixing part and hinge parts provided at both ends of the fixing part. The hinge parts are hinged to the fixing part by a rotating shaft. The fixing part is welded to the second middle tube. The two lower fork tubes are respectively welded and fixed to the hinge parts.

[0007] As an improvement, the support frame includes a first support tube and a second support tube. One end of the first support tube is welded and fixed to the second middle tube. The other end of the first support tube is welded and fixed to the second support tube. The second support tube is welded and fixed to the mounting bracket.

[0008] As an improvement, the reinforcing frame includes a first reinforcing tube and a second reinforcing tube welded and fixed to the first reinforcing tube. The first reinforcing tube and the second reinforcing tube are welded and fixed to the lower fork tube; a triangle is formed between the reinforcing frame and the lower fork tube.

[0009] As an improvement, a second hinge seat welded and fixed to the first support tube is provided on the first support tube. A third hinge seat welded and fixed to the first reinforcing tube is provided on the first reinforcing tube. The two ends of the shock absorber are respectively hinged to the second hinge seat and the third hinge seat.

[0010] As an improvement, a reinforcing block is provided at the connection of the first front tube and the second front tube. The reinforcing block is respectively welded and fixed to the first front tube and the second front tube.

[0011] As an improvement, a first baffle welded and fixed to the front frame is provided inside the front frame.

[0012] As an improvement, a second baffle is provided between the mounting bracket and the support frame. The second baffle is respectively welded and fixed to the mounting bracket, the first support tube, the second support tube and the second middle tube.

[0013] The beneficial effects of the present utility model are as follows: The present utility model is provided with a first cavity and a second cavity, which is convenient for users to load goods. Users can also fix the goods on the mounting bracket. The length of the mounting bracket is sufficient and will not affect the driving comfort of users due to the placement of goods; the structure of the present utility model is stable and can give users a high driving comfort. Description of the Drawings

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a top view of the mounting bracket.

[0016] Figure 3Schematic diagram of the structure of the five-way joint and the second middle tube.

[0017] Figure 4 Schematic diagram of the structure of the five-way joint and the lower tube.

[0018] Figure 5 Schematic diagram of the structure of the first hinge seat and the lower fork.

[0019] Figure 6 Schematic diagram of the structure of the head tube and the first middle tube.

[0020] Explanation of the reference numerals in the figure: 1. Head tube; 2. Front frame; 21. First middle tube; 22. Second middle tube; 221. First hinge seat; 222. Fixed part; 223. Hinge part; 23. Lower tube; 24. Second front tube; 25. First front tube; 251. Reinforcing block; 26. First baffle; 3. Five-way joint; 4. Mounting bracket; 41. First mounting plate; 42. Second mounting plate; 43. Seat cushion; 44. Second baffle; 5. Support frame; 51. First support tube; 52. Second support tube; 53. Shock absorber; 6. Lower fork tube; 61. Rear fork; 62. First reinforcing tube; 63. Second reinforcing tube. Embodiment

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings of the specification;

[0022] As Figure 1 、 3 、4, and 6 show, an electric bicycle frame with a shelf, including a front frame and a rear frame. The front frame includes a head tube 1 and two front frames 2 symmetrically distributed on the head tube 1. The front frame 2 is fixedly welded to the head tube 1. The front frame 2 sequentially includes a first middle tube 21, a second middle tube 22 welded to the first middle tube 21, a lower tube 23 welded to the second middle tube 22, a second front tube 24 welded to the lower tube 23, and a first front tube 25 welded to the second front tube 24. The front frame 2 is fixedly connected to the head tube 1 from beginning to end. A first cavity is formed between the two front frames 2 and the head tube 1. Users can place goods in the first cavity for transportation without occupying the user's seat space. A first baffle 26 is further provided on the front frame 2. The first baffle 26 can prevent the goods from falling from both sides of the first cavity. A five-way joint 3 is provided between the two front frames 2. The five-way joint 3 is respectively fixedly welded to the second front tube 24 and the lower tube 23. A reinforcing block 251 is provided at the connection between the first front tube 25 and the second front tube 24. The reinforcing block 251 is respectively welded to the first front tube 25 and the second front tube 24, strengthening the overall strength of the front frame.

[0023] As Figure 1 、 2As shown in FIGS. 5, the rear frame includes a mounting frame 4, support frames 5 symmetrically distributed on both sides of the bottom of the mounting frame 4, and a lower fork provided below the support frames 5. The mounting frame 4 is U-shaped. The two ends of the mounting frame 4 are respectively welded to two second middle tubes 22. A seat cushion 43 is provided on the mounting frame 4 and fixedly connected through a second mounting plate 42. There are three second mounting plates 42 on the mounting frame 4. The second mounting plate 42 is rectangular. The two ends of the second mounting plate 42 are welded to the mounting frame 4. The second mounting plate 42 is provided with second mounting holes capable of connecting with the seat cushion 43. The second mounting plate 42 is connected to the seat cushion 43 through a screw; this makes the seat cushion 43 more firmly installed on the mounting frame 4 and avoids the possibility of the seat cushion 43 falling off. The support frame 5 includes a first support tube 51 and a second support tube 52 welded to the first support tube 51. One end of the first support tube 51 is welded to the second middle tube 22. One end of the second support tube 52 is welded to the mounting frame 4. A second cavity is formed between the mounting frame 4 and the two support frames 5. A controller box is provided in the second cavity. There are also two first mounting plates 41 for fixing the controller box on the mounting frame 4. The two ends of the first mounting plate 41 are welded to the bottom of the mounting frame 4. The first mounting plate 41 is provided with first mounting holes for fixing the controller box. The first mounting plate 41 is connected to the controller box through a screw, making the controller box more firmly fixed; a second baffle 44 is provided between the mounting frame 4 and the support frame 5. The second baffle 44 is respectively welded to the mounting frame 4, the first support tube 51, the second support tube 52, and the second middle tube 22; users can place goods in the second cavity or on the mounting frame 4. The second baffle 44 can prevent the items placed in the second cavity from falling out from both sides of the second cavity, improving the safety guarantee for the goods.The lower fork includes two symmetrically distributed lower fork tubes 6. One end of each lower fork tube 6 is hinged to a first hinge seat 221 provided between two second middle tubes 22. The first hinge seat 221 includes a fixing part 222 and hinge parts 223 provided at both ends of the fixing part 222. The hinge parts 223 are hinged to the fixing part 222 through hinge shafts. The fixing part 222 is welded between the two second middle tubes 22. The two lower fork tubes 6 correspond to the two hinge parts 223 one by one and are welded and fixed. The other end of each lower fork tube 6 is provided with a tail fork 61 fixedly connected thereto. A reinforcing frame is welded to the lower fork tube 6. A triangle is formed between the reinforcing frame and the lower fork tube 6, which can improve the load-bearing strength of the lower fork tube 6 and thus improve the overall stability of the vehicle frame. The reinforcing frame includes a first reinforcing tube 62 and a second reinforcing tube 63 welded to the first reinforcing tube 62. A shock absorber 53 is provided between the first reinforcing tube 62 and the first support tube 51. A second hinge seat is welded to the first support tube 51. A third hinge seat is welded to the first reinforcing tube 62. One end of the shock absorber 53 is hinged to the second hinge seat, and the other end of the shock absorber 53 is hinged to the third hinge seat. The shock absorber 53 is located below the mounting frame 4, which can relieve the pressure brought by the goods or the user on the mounting frame 4. At the same time, it can relieve the shock feeling caused by bumps during the driving process of the user, improve the driving experience of the user and enhance the load-bearing strength of the entire vehicle frame.

[0024] Principle of the present utility model: The controller box is fixed in the second cavity, with good safety. The user can place goods on the first cavity, the second cavity and the mounting frame 4, with strong practicability. At the same time, the overall body structure has good stability and can also improve the driving experience of the user.

Claims

1. An electric bicycle frame with a shelf, comprising a front frame and a rear frame, characterized in that: The front frame includes a head tube and two front frames symmetrically distributed on the head tube. The front frame sequentially includes a first middle tube, a second middle tube fixedly connected to the first middle tube, a lower tube fixedly connected to the second middle tube, a second front tube fixedly connected to the lower tube, and a first front tube fixedly connected to the second front tube. The front frame is fixedly connected to the head tube at the head and tail. A first cavity is formed between the two front frames and the head tube. A bottom bracket fixedly connected to them is provided between the two front frames. The bottom bracket is fixedly connected to the second front tube and the lower tube respectively; the rear frame includes a mounting bracket, support frames symmetrically distributed on both sides of the bottom of the mounting bracket, and a lower fork provided below the support frames. The mounting bracket is U-shaped. The two ends of the mounting bracket are respectively fixedly connected to two second middle tubes. A first mounting plate fixedly connected to the mounting bracket is provided on the mounting bracket. A first mounting hole for fixing the controller box is provided on the first mounting plate. One end of the support frame is fixedly connected to the second middle tube, and the other end of the support frame is fixedly connected to the mounting bracket. A second cavity is formed between the two support frames and the mounting bracket. The controller box is fixed in the second cavity. The lower fork includes two symmetrically distributed lower fork tubes. One end of the lower fork tube is hinged to a first hinge seat provided between the two second middle tubes, and the other end of the lower fork tube is fixedly connected to the tail fork. A reinforcing frame fixedly connected to the lower fork tube is provided on the lower fork tube. A shock absorber is provided between the reinforcing frame and the support frame. One end of the shock absorber is hinged to the support frame, and the other end of the shock absorber is hinged to the reinforcing frame.

2. The electric bicycle frame with a shelf according to claim 1, wherein: A second mounting plate is provided on the mounting bracket. The second mounting plate is rectangular. The two ends of the second mounting plate are welded to the frame tube. Second mounting holes capable of being fixedly connected to the seat cushion are provided on the second mounting plate. The second mounting plate and the seat cushion are fixedly connected by screws.

3. The electric bicycle frame with a shelf according to claim 1, characterized in that: The first hinge seat includes a fixing part and hinge parts provided at both ends of the fixing part. The hinge parts are hinged to the fixing part through a rotating shaft. The fixing part is welded to the second middle tube. The two lower fork tubes are respectively welded and fixed to the hinge parts.

4. The electric bicycle frame with a shelf according to claim 1, characterized in that: The support frame includes a first support tube and a second support tube. One end of the first support tube is welded and fixed to the second middle tube, the other end of the first support tube is welded and fixed to the second support tube, and the second support tube is welded and fixed to the mounting bracket.

5. The electric bicycle frame with a shelf according to claim 4, characterized in that: The reinforcing frame includes a first reinforcing tube and a second reinforcing tube welded and fixed to the first reinforcing tube. The first reinforcing tube and the second reinforcing tube are welded and fixed to the lower fork tube; a triangle is formed between the reinforcing frame and the lower fork tube.

6. The electric bicycle frame with a shelf according to claim 5, characterized in that: A second hinge seat welded and fixed to the first support tube is provided on the first support tube. A third hinge seat welded and fixed to the first reinforcing tube is provided on the first reinforcing tube. The two ends of the shock absorber are respectively hinged to the second hinge seat and the third hinge seat.

7. The electric bicycle frame with a shelf according to claim 1, characterized in that: A reinforcing block is provided at the connection of the first front tube and the second front tube. The reinforcing block is welded and fixed to the first front tube and the second front tube respectively.

8. The electric bicycle frame with a shelf according to claim 1, characterized in that: A first baffle welded and fixed to the front frame is provided inside the front frame.

9. The electric bicycle frame with a shelf according to claim 1, characterized in that: A second baffle is provided between the mounting bracket and the support frame. The second baffle is welded and fixed to the mounting bracket, the first support tube, the second support tube, and the second middle tube respectively.

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