Middle motor mounting rack of electric bicycle
Through the combined structure of fixing plate, clamp and connecting bolts, the problems of loosening and position deviation of the mid-mounted motor during the vehicle driving are solved, and the motor is stable installation and convenient maintenance are achieved.
Patent Information
- Application Number
- CN202422968234.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-12-03
AI Technical Summary
The existing mid-motor connection frame is prone to loosening and positional deviation during the vehicle driving, resulting in unstable installation.
The combined structure of fixing plate, clamp and connecting bolts is adopted to fix the motor frame with the frame through fitting and threaded connection, forming a stable motor housing to ensure that the motor does not loosen and positional deviation.
The stable installation of the mid-mounted motor is achieved, which avoids loosening and position deviation, simplifies the disassembly and installation steps of the motor, and improves maintenance convenience.
Smart Images
Figure CN223086213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor brackets, in particular to a mounting bracket for a mid-mounted motor of an electric bicycle. Background Art
[0002] At present, those skilled in the art usually install a mid-mounted motor on an ordinary bicycle with the help of a connecting bracket to make it an electric bicycle.
[0003] However, some existing mid-mounted motor connecting brackets are usually connected to a pedal bearing by connectors provided at both ends of the motor bracket. This structure causes the vibration generated during long-term vehicle driving, resulting in problems such as easy loosening and position deviation of the installed mid-mounted motor. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides a mounting bracket for a mid-mounted motor of an electric bicycle, aiming to improve the problems of easy loosening and position deviation of the mid-mounted motor.
[0005] To achieve the above object, the utility model provides the following technical solution: A mounting bracket for a mid-mounted motor of an electric bicycle, including a motor bracket. On the left side of the motor bracket, there is a third fixing plate. On the upper side of the third fixing plate, there is a first clamp. Inside the first clamp, there is a first frame. On the right side of the motor bracket, there is a first fixing plate. On the right side of the first fixing plate, there is a first side of a connecting plate. On the other side of the connecting plate, there is a second clamp. Inside the second clamp, there is a second frame. On both sides of the motor bracket, there are fixed heat dissipation frames. On the right side of the front heat dissipation frame, there is a second fixing plate. On the right side of the second fixing plate, there is a fixed bearing.
[0006] Preferably, three sixth connecting bolts are respectively arranged on the upper and lower sides of the first clamp. The connecting part between the first clamp and the third fixing plate is of an embedded structure. A fifth connecting bolt is arranged at the embedded part of the first clamp and the third fixing plate. The first clamp and the second clamp have the same structure.
[0007] Preferably, on the lower side of the third fixing plate, there is a second outer convex platform. On the right side of the second outer convex platform, it is fixedly connected to the left side of the motor bracket. A fourth connecting bolt is arranged at the connecting part between the third fixing plate and the second outer convex platform.
[0008] Preferably, on the right side of the motor bracket, there is a first outer convex platform. On the right side of the first outer convex platform, it is connected to the left side of the first fixing plate. The connecting part between the first fixing plate and the first outer convex platform is of an embedded structure. A second connecting bolt is arranged at the embedded part of the first fixing plate and the first outer convex platform. A first connecting bolt is arranged at the connecting part between the first fixing plate and the connecting plate. An eighth connecting bolt is arranged at the connecting part between the connecting plate and the second clamp.
[0009] Preferably, outer bosses three are fixedly connected to the upper and lower ends on the right side of the front heat dissipation frame respectively. The right side of the outer boss three is connected to the left side of the fixing plate two. A connecting bolt three is arranged at the connecting part of the outer boss three and the fixing plate two. One end of a bearing is fixedly connected to the right side of the fixing plate two.
[0010] Preferably, the lower end of the frame one is fixedly connected to the left end of the frame two. The bearing passes through the lower end of the frame one and is rotationally connected to the frame one.
[0011] Preferably, motor covers are arranged on the other sides of the heat dissipation frame. The other end of the bearing is provided with a gear box. The left side of the gear box is fixedly connected to the rear motor cover. A gear set composed of three gears is arranged inside the gear box and is arranged in sequence from left to right.
[0012] Preferably, inner bosses are arranged on the inner walls of the sides of the heat dissipation frame close to the motor frame. There are six inner bosses on the inner wall of the heat dissipation frame, and the inner bosses are evenly distributed on the same plane. Threaded holes are arranged inside the inner bosses. Connecting bolts seven are arranged inside the motor cover. There are three connecting bolts seven, and they are evenly distributed on the motor cover. The connecting bolts seven pass through the motor cover and are threadedly connected to the threaded holes inside the inner bosses.
[0013] The utility model has the following beneficial effects:
[0014] 1. In the utility model, through the connection of the fixing plate one with the clamp two and the motor frame, the fixing plate two with the bearing and the heat dissipation frame, the fixing plate three with the clamp one and the motor frame, and the connection of the gear box with the bearing and the motor cover, the effect that the mid-mounted motor will not become loose or shift in position is achieved.
[0015] 2. In the utility model, through the connecting bolt seven and the inner bosses arranged inside the heat dissipation frame, the disassembly and installation of the motor cover are made easier, reducing the steps of installing and disassembling the motor, and achieving the effect of more convenient maintenance of the motor in the later stage. Description of the Drawings
[0016] Figure 1 It is the front three-dimensional structure diagram of the mid-mounted motor mounting frame of the electric bicycle proposed by the utility model;
[0017] Figure 2 It is the back three-dimensional structure diagram of the mid-mounted motor mounting frame of the electric bicycle proposed by the utility model;
[0018] Figure 3 It is the internal structure diagram of the motor frame of the mid-mounted motor mounting frame of the electric bicycle proposed by the utility model.
[0019] Legend Explanation:
[0020] 1. Frame 1; 2. Clamp 1; 3. Gear box; 4. Clamp 2; 5. Frame 2; 6. Connecting plate; 7. Connecting bolt 1; 8. Fixed plate 1; 9. Fixed plate 2; 10. Bearing; 11. Connecting bolt 2; 12. Connecting bolt 3; 13. Outer boss 1; 14. Motor cover; 15. Heat dissipation frame; 16. Motor frame; 17. Outer boss 2; 18. Connecting bolt 4; 19. Fixed plate 3; 20. Connecting bolt 5; 21. Connecting bolt 6; 22. Outer boss 3; 23. Inner boss; 24. Connecting bolt 7; 25. Connecting bolt 8. Detailed implementation mode
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the specification drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0022] Refer to Figures 1-3 , an embodiment provided by the present invention: a mid-mounted motor mounting bracket for an electric bicycle, including a motor frame 16. A fixed plate 3 19 is arranged on the left side of the motor frame 16. A clamp 1 2 is connected to the upper side of the fixed plate 3 19. A frame 1 1 is arranged inside the clamp 1 2. A fixed plate 1 8 is arranged on the right side of the motor frame 16. One side of the fixed plate 1 8 is connected to one side of a connecting plate 6. The other side of the connecting plate 6 is connected to a clamp 2 4. A frame 2 5 is arranged inside the clamp 2 4. Heat dissipation frames 15 are fixedly connected to both sides of the motor frame 16. A fixed plate 2 9 is arranged on the right side of the front heat dissipation frame 15. A bearing 10 is fixedly connected to the right side of the fixed plate 2 9.
[0023] In this embodiment, taking Figure 1 as the front, rear, left and right directions, the clamp 1 2 is fixed on the frame 1 1, the clamp 2 4 is fixed on the frame 2 5, the fixed plate 3 19 is connected to the clamp 1 2, one side of the connecting plate 6 is connected to the clamp 2 4, and then the other side of the connecting plate 6 is connected to the right side of the fixed plate 1 8. One side of the fixed plate 2 9 is fixed on the bearing 10, and the other side is fixed on the heat dissipation frame 15. The heat dissipation frame 15 and the motor frame 16 together form the outer shell for storing the motor. By connecting and fixing the motor shell through the fixed plate 1 8, the fixed plate 2 9 and the fixed plate 3 19, a stable effect is achieved.
[0024] Refer to Figure 1, three connecting bolts six 21 are respectively arranged on the upper and lower sides of the first clamp 2. The connecting part of the first clamp 2 and the third fixing plate 19 is of an embedded structure. A connecting bolt five 20 is arranged at the embedded part of the first clamp 2 and the third fixing plate 19. The first clamp 2 and the second clamp 4 have the same structure. By disassembling and installing the connecting bolts six 21, the first clamp 2 and the second clamp 4 can be installed on the first vehicle frame 1 and the second vehicle frame 5. The protruding part on the upper side of the third fixing plate 19 and the inwardly extended embedded part on the lower side of the first clamp 2 are fitted together. A through hole is provided in the protruding part on the upper side of the third fixing plate 19, and a threaded hole is provided in the inwardly extended embedded part on the lower side of the first clamp 2, which can be threadedly connected with the connecting bolt five 20, so that the first clamp 2 and the third fixing plate 19 are firmly connected.
[0025] Refer to Figure 1 , the lower side of the third fixing plate 19 is connected with an outer boss two 17. The right side of the outer boss two 17 is fixedly connected to the left side of the motor frame 16. A connecting bolt four 18 is arranged at the connecting part of the third fixing plate 19 and the outer boss two 17. A through hole is provided inside the left side of the outer boss two 17, and a threaded hole is provided on the lower side of the third fixing plate 19, so that the connecting bolt four 18 can be threadedly connected to the connecting part of the third fixing plate 19 and the outer boss two 17, increasing the firmness of the structure.
[0026] Refer to Figures 1-2 , the right side of the motor frame 16 is fixedly connected with an outer boss one 13. The right side of the outer boss one 13 is connected to the left side of the first fixing plate 8. The connecting part of the first fixing plate 8 and the outer boss one 13 is of an embedded structure. A connecting bolt two 11 is arranged at the embedded part of the first fixing plate 8 and the outer boss one 13. A connecting bolt one 7 is arranged at the connecting part of the first fixing plate 8 and the connecting plate 6. A connecting bolt eight 25 is arranged at the connecting part of the connecting plate 6 and the second clamp 4.
[0027] Specifically, through holes are provided in the fitting part of the rear side of the connecting plate 6 and the second clamp 4, so that the connecting bolt eight 25 can be threadedly connected to the fitting part. Threaded holes are provided on the front side of the connecting plate 6. Through holes are provided in the first fixing plate 8 at its connecting part with the connecting plate 6. The connecting bolt one 7 can pass through the through hole in the first fixing plate 8 and be threadedly connected to the connecting plate 6. Through holes are provided on the right side of the outer boss one 13. Threaded holes are provided in the first fixing plate 8 at its fitting part with the outer boss one 13, so that the connecting bolt two 11 can be threadedly connected to the fitting part.
[0028] Refer to Figures 1-3, on the upper and lower ends of the right side of the front heat dissipation frame 15, there are respectively fixedly connected with the outer convex platforms three 22. The right side of the outer convex platform three 22 is connected to the left side of the fixed plate two 9. A connecting bolt three 12 is arranged at the connecting part of the outer convex platform three 22 and the fixed plate two 9. One end of the bearing 10 is fixedly connected to the right side of the fixed plate two 9; there is a threaded hole on the right side of the outer convex platform three 22, and the fixed plate two 9 is provided with a through hole at its connecting part with the outer convex platform three 22, so that the connecting bolt three 12 can be threadedly connected to the connecting part, and the right side of the fixed plate two 9 is provided with a through hole, which can allow the bearing 10 to pass through.
[0029] Refer to Figure 1 , the lower end of the vehicle frame one 1 is fixedly connected to the left end of the vehicle frame two 5. The bearing 10 passes through the lower end of the vehicle frame one 1 and is rotationally connected to the vehicle frame one 1.
[0030] Refer to Figures 1-2 , motor covers 14 are provided on the other sides of the heat dissipation frame 15. The other end of the bearing 10 is provided with a gear box 3. The left side of the gear box 3 is fixedly connected to the rear motor cover 14. Inside the gear box 3, there is a gear group composed of three gears, arranged in sequence from left to right; the output end of the motor is fixedly connected to the left gear in the gear box 3, and the right gear of the gear box 3 is fixedly connected to the bearing 10. The rotation of the output end of the motor drives the rotation of the left, middle and right gears inside the gear box 3 in sequence, thereby driving the rotation of the bearing 10.
[0031] Refer to Figure 3 , inner convex platforms 23 are provided on the inner walls of the heat dissipation frame 15 on the side close to the motor frame 16. There are six inner convex platforms 23 on the inner wall of the heat dissipation frame 15, and the inner convex platforms 23 are evenly distributed on the same plane. Threaded holes are provided inside the inner convex platforms 23. Inside the motor cover 14, there are three connecting bolts seven 24, and they are evenly distributed on the motor cover 14. The connecting bolts seven 24 pass through the motor cover 14 and are threadedly connected to the threaded holes inside the inner convex platforms 23.
[0032] Specifically, by removing the connecting bolts seven 24, the motor cover 14 is removed. The motor is fixed on the inner convex platforms 23 of the heat dissipation frame 15 through the lifting lugs on the outer wall of the motor. Through the threaded connection between the connecting bolts seven 24 and the inner convex platforms 23, the motor cover 14 is threadedly connected to the inner convex platforms 23.
[0033] Working principle: When using this device, the motor cover 14 can be removed by disassembling the connecting bolt VII 24. The motor can be fixed on the inner convex platform 23 of the heat dissipation frame 15 through the lifting lugs on the outer wall of the motor. The motor cover 14 is threadedly connected to the inner convex platform 23 through the connecting bolt VII 24 and the inner convex platform 23 to complete the placement of the motor. The power at the output end of the motor can be transmitted to the bearing 10 through the gears inside the gear box 3. The clamp I 2 and the clamp II 4 are installed on the frame I 1 and the frame II 5 by disassembling and installing the connecting bolt VI 21. The upper side of the fixing plate III 19 and the embedded part extending downward of the clamp I 2 are fixedly connected through the connecting bolt V 20. The connecting part between the left side of the outer convex platform II 17 and the lower side of the fixing plate III 19 is fixedly connected through threaded connection with the connecting bolt IV 18. The rear side of the connecting plate 6 and the fitting part of the clamp II 4 are fixedly connected through the connecting bolt 25. The connecting part between the connecting plate 6 and the fixing plate I 8 is fixedly connected through the connecting bolt I 7. The fitting part between the outer convex platform I 13 and the fixing plate I 8 is fixedly connected through the connecting bolt II 11. The connecting part between the outer convex platform III 22 and the fixing plate II 9 is fixedly connected through the connecting bolt III 12. A through hole is provided on the right side of the fixing plate II 9 to allow the bearing 10 to pass through. The heat dissipation frame 15 and the motor frame 16 together form the outer shell for storing the motor. Through the above connection and fixation of the motor shell by the fixing plate I 8, the fixing plate II 9, the fixing plate III 19 and the gear box 3, the in-wheel motor is firmly installed, thus achieving the effect that the in-wheel motor will not loosen or shift in position.
[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. Mid-mounted motor mounting bracket for electric bicycle, including motor bracket (16), characterized in that: On the left side of the motor bracket (16), there is a third fixing plate (19). On the upper side of the third fixing plate (19), there is a first clamp (2). Inside the first clamp (2), there is a first vehicle frame (1). On the right side of the motor bracket (16), there is a first fixing plate (8). On the right side of the first fixing plate (8), one side of a connecting plate (6) is connected. On the other side of the connecting plate (6), there is a second clamp (4). Inside the second clamp (4), there is a second vehicle frame (5). On both sides of the motor bracket (16), there are fixed heat dissipation brackets (15). On the right side of the front heat dissipation bracket (15), there is a second fixing plate (9). On the right side of the second fixing plate (9), there is a fixed bearing (10).
2. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: On the upper and lower sides of the first clamp (2), there are respectively three sixth connecting bolts (21). The connecting part between the first clamp (2) and the third fixing plate (19) is of an embedded structure. In the embedded part between the first clamp (2) and the third fixing plate (19), there is a fifth connecting bolt (20). The first clamp (2) and the second clamp (4) have the same structure.
3. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: On the lower side of the third fixing plate (19), there is a second outer convex platform (17). On the right side of the second outer convex platform (17), it is fixedly connected to the left side of the motor bracket (16). In the connecting part between the third fixing plate (19) and the second outer convex platform (17), there is a fourth connecting bolt (18).
4. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: On the right side of the motor bracket (16), there is a first outer convex platform (13). On the right side of the first outer convex platform (13), it is connected to the left side of the first fixing plate (8). The connecting part between the first fixing plate (8) and the first outer convex platform (13) is of an embedded structure. In the embedded part between the first fixing plate (8) and the first outer convex platform (13), there is a second connecting bolt (11). In the connecting part between the first fixing plate (8) and the connecting plate (6), there is a first connecting bolt (7). In the connecting part between the connecting plate (6) and the second clamp (4), there is an eighth connecting bolt (25).
5. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: On the upper and lower ends on the right side of the front heat dissipation bracket (15), there are respectively fixed second outer convex platforms (22). On the right side of the second outer convex platforms (22), they are connected to the left side of the second fixing plate (9). In the connecting part between the second outer convex platforms (22) and the second fixing plate (9), there is a third connecting bolt (12). On the right side of the second fixing plate (9), one end of the bearing (10) is fixedly connected.
6. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: The lower end of the first vehicle frame (1) is fixedly connected to the left end of the second vehicle frame (5). The bearing (10) passes through the lower end of the first vehicle frame (1) and is rotatably connected to the first vehicle frame (1).
7. The mid-motor mounting bracket for an electric bicycle according to claim 1, characterized in that: On the other side of the heat dissipation bracket (15), there are motor covers (14). On the other end of the bearing (10), there is a gear box (3). On the left side of the gear box (3), it is fixedly connected to the rear motor cover (14). Inside the gear box (3), there is a gear set composed of three gears arranged in sequence from left to right.
8. The mid-motor mounting bracket for an electric bicycle according to claim 7, characterized in that: On the inner walls of the side of the heat dissipation rack (15) close to the motor rack (16), inner bosses (23) are provided. There are six inner bosses (23) on the inner wall of the heat dissipation rack (15), and the inner bosses (23) are evenly distributed on the same plane. Threaded holes are provided inside the inner bosses (23). Inside the motor cover (14), seven connecting bolts (24) are provided. There are three connecting bolts (24), and they are evenly distributed on the motor cover (14). The seven connecting bolts (24) pass through the motor cover (14) and are threadedly connected to the threaded holes inside the inner bosses (23).