Electric vehicle motor protection device

Abstract

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle motor protection device which comprises a motor protection cover, mounting holes for mounting the motor protection cover are annularly formed in the motor protection cover at equal intervals, screws are arranged at the mounting holes, and a first ring groove and a second ring groove are formed in the motor protection cover. A protection assembly is arranged on the motor protection cover; after the motor protection cover is fixedly mounted, rubber ring pads are embedded in a first ring groove and a second ring groove, and then a protection ring is positioned and mounted, so that a first embedded ring is inserted into the first ring groove, a second embedded ring is inserted into the second ring groove, and the protection ring is matched to cover a screw so as to protect the screw for fixing the motor protection cover; abrasion and corrosion of the screw in the using process are avoided, and electric vehicle motor maintenance is prevented from being affected.

Description

A protective device for electric vehicle motors Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to an electric vehicle motor protection device. Background Technology

[0002] Chinese patent document CN222563602U discloses a protective device for an electric vehicle motor, including a motor end cover, a flywheel, an oil seal, and a motor shaft. The flywheel is coaxially fixed to the outside of the motor end cover. The motor shaft passes through the center of the motor end cover via a bearing. The oil seal is positioned between the flywheel and the motor shaft. A dust cover is also provided on the outside of the flywheel, passing through the motor shaft and covering the oil seal. Two annular retaining rings are provided on the inner side of the dust cover for dust and water protection. The outer side of the dust cover is fixed by a flat fork plate to prevent it from falling off the motor shaft. The dust cover completely encloses the oil seal, preventing it from being directly exposed. The two annular retaining rings, arranged from the outside in, effectively prevent dust and splash water from entering the oil seal, preventing aging and extending its service life.

[0003] However, in the above-mentioned solutions and existing technologies, the motor of the electric bicycle is located inside the rear wheel of the electric bicycle, and the motor protective cover of the electric bicycle is fixed to the rear wheel hub by tightening screws. During the long-term use of the electric bicycle, the screw heads of the motor protective cover exposed by the gravel and mud are easily worn and corroded, making it impossible to disassemble the screws normally, which affects the maintenance of the electric bicycle motor. Improvement and optimization are needed.

[0004] Therefore, this utility model proposes an electric vehicle motor protection device to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a protective device for electric vehicle motors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric vehicle motor protection device, comprising: a motor protection cover, wherein the motor protection cover has mounting holes for installing the motor protection cover equidistantly arranged in a ring, screws are provided at the mounting holes, a first annular groove and a second annular groove are provided on the motor protection cover, and a protection component is provided on the motor protection cover; the protection component includes a protection ring, a rubber ring pad, a protrusion, and an L-shaped lever.

[0007] Preferably, the protective ring is snapped onto the side wall of the motor protective cover, the protective ring covers the screw, the rubber ring gasket is embedded in the first ring groove and the second ring groove, and the first insert ring and the second insert ring are fixedly provided on the side wall of the protective ring.

[0008] Preferably, the first insert ring is inserted into the first ring groove, the second insert ring is inserted into the second ring groove, and the inner ring wall of the protective ring is fixedly provided with equidistant ring-shaped locking blocks, and the inner ring wall of the protective ring is provided with equidistant ring-shaped positioning holes.

[0009] Preferably, the motor protective cover has protrusions fixedly arranged in a ring at equal intervals on its side wall, the two sides of the protrusions engaging with the locking blocks, the protrusions having square grooves inside, and the side walls of the square grooves having sliding grooves.

[0010] Preferably, a limiting block is movably arranged in the square groove, a spring is provided on the side end of the limiting block, and an insert is fixedly arranged on the side wall of the limiting block. The end of the insert is inclined and the end of the insert passes through the protrusion and is inserted into the positioning hole.

[0011] Preferably, a slider is fixedly provided on the side wall of the limiting block, the slider is movably engaged in the groove, the end of the slider is fixedly connected to the L-shaped dial plate, the L-shaped dial plate is engaged with the protrusion, trapezoidal blocks are symmetrically fixedly provided on the side wall of the L-shaped dial plate, trapezoidal grooves are symmetrically opened on the side wall of the protrusion, the trapezoidal blocks are engaged with the trapezoidal grooves, a hook groove is opened on the side wall of the L-shaped dial plate, and an elastic hook is fixedly provided on the side wall of the protrusion, the hook groove is engaged with the elastic hook.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] After the motor protective cover is fixedly installed, rubber ring gaskets are embedded in the first and second ring grooves. Then, the protective ring is positioned and installed so that the first embedded ring is inserted into the first ring groove and the second embedded ring is inserted into the second ring groove. The protective ring covers the screws used to fix the motor protective cover, which protects the screws from wear and corrosion during use and prevents them from affecting the maintenance of the electric vehicle motor. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model;

[0015] Figure 2 is an exploded view of the structural connection of this utility model;

[0016] Figure 3 is a schematic diagram of the connection of the protective ring structure of this utility model;

[0017] Figure 4 is a partial enlarged view of Figure 3 of this utility model;

[0018] Figure 5 is a half-sectional view of the protrusion structure connection of this utility model;

[0019] Figure 6 is a schematic diagram of the protrusion structure connection of this utility model.

[0020] In the diagram: 1. Motor protective cover; 2. Mounting hole; 3. Screw; 4. Protective ring; 5. First ring groove; 6. Second ring groove; 7. Rubber ring pad; 8. First insert ring; 9. Second insert ring; 10. Locking block; 11. Positioning insertion hole; 12. Protrusion; 13. Square groove; 14. Sliding groove; 15. Limiting block; 16. Spring; 17. Insert block; 18. Sliding block; 19. L-shaped lever; 20. Trapezoidal block; 21. Trapezoidal groove; 22. Hook groove; 23. Elastic hook. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please refer to Figures 1-6. This utility model provides the following two preferred embodiments:

[0023] Example 1: An electric vehicle motor protection device includes: a motor protective cover 1, wherein the motor protective cover 1 has mounting holes 2 for installing the motor protective cover 1 at equal intervals in a ring, and screws 3 are provided at the mounting holes 2; the motor protective cover 1 has a first annular groove 5 and a second annular groove 6; and a protective component is provided on the motor protective cover 1; characterized in that: the protective component includes a protective ring 4, a rubber ring pad 7, a protrusion 12, and an L-shaped baffle 19; the protective ring 4 is snapped onto the side wall of the motor protective cover 1, the protective ring 4 covers the screws 3, the rubber ring pad 7 is embedded in the first annular groove 5 and the second annular groove 6, and a first insert ring 8 and a second insert ring 9 are fixedly provided on the side wall of the protective ring 4; the first... A first insert ring 8 is inserted into the first ring groove 5, and a second insert ring 9 is inserted into the second ring groove 6. A locking block 10 is fixedly arranged in a ring at equal intervals on the inner ring wall of the protective ring 4. A positioning insertion hole 11 is also fixedly arranged in a ring at equal intervals on the inner ring wall of the protective ring 4. A protrusion 12 is fixedly arranged in a ring at equal intervals on the side wall of the motor protective cover 1. Both sides of the protrusion 12 are engaged with the locking block 10. A square groove 13 is formed inside the protrusion 12, and a sliding groove 14 is formed on the side wall of the square groove 13. A limiting block 15 is movably arranged inside the square groove 13. A spring 16 is provided on the side end of the limiting block 15. An insertion block 17 is fixedly arranged on the side wall of the limiting block 15. The end of the insertion block 17 is inclined and penetrates the protrusion 12 to be inserted into the positioning insertion hole 11.

[0024] In use, after tightening the screw 3 through the mounting hole 2 to fix the motor protective cover 1 onto the rear wheel hub of the electric vehicle, the appropriate rubber ring pads 7 are respectively embedded in the first ring groove 5 and the second ring groove 6. Then, the two sides of the protrusion 12 are engaged with the locking block 10 to position and install the protective ring 4. During the movement of the protective ring 4 toward the motor protective cover 1, the second insert ring 9 engages with the inclined surface of the insert block 17, and thus pushes the insert block 17 to move as the protective ring 4 moves, causing the limiting block 15 to compress the spring 16. After the protective ring 4 is engaged on the side wall of the motor protective cover 1, the spring 16 returns to its original position and pushes the insert block 17 to move and insert into the positioning hole 11 to fix the position of the protective ring 4. At this time, the first insert ring 8 is inserted into the first ring groove 5 and squeezes the rubber ring pad 7 therein, and the second insert ring 9 is inserted into the second ring groove 6 and squeezes the rubber ring pad 7 therein. Together with the protective ring 4 covering the screw 3, it protects the screw 3 used to fix the motor protective cover 1, preventing the screw 3 from wearing and corroding during use, and preventing it from affecting the maintenance of the electric vehicle motor.

[0025] Example 2: Based on Example 1, a slider 18 is fixedly installed on the side wall of the limiting block 15. The slider 18 is movably engaged in the slide groove 14. The end of the slider 18 is fixedly connected to the L-shaped dial plate 19. The L-shaped dial plate 19 is engaged with the protrusion 12. Trapezoidal blocks 20 are symmetrically fixedly installed on the side wall of the L-shaped dial plate 19. Trapezoidal grooves 21 are symmetrically opened on the side wall of the protrusion 12. The trapezoidal blocks 20 are engaged with the trapezoidal grooves 21. The side wall of the L-shaped dial plate 19 is opened with a hook groove 22. An elastic hook 23 is fixedly installed on the side wall of the protrusion 12. The hook groove 22 is engaged with the elastic hook 23.

[0026] During use, as the spring 16 resets and pushes the insert 17 to move, the slider 18 moves within the slide groove 14, and the trapezoidal block 20 moves within the trapezoidal groove 21, until the insert 17 moves and inserts into the positioning hole 11 to fix the protective ring 4. At this time, the L-shaped lever 19 engages with the protrusion 12, and the hook groove 22 engages with the elastic hook 23, further ensuring that the insert 17 is stably inserted into the positioning hole 11 to achieve stable installation of the protective ring 4. At the same time, the L-shaped lever 19 covers the slide groove 14 to prevent gravel and mud from getting stuck in the square groove 13 and the slide groove 14 during the use of the electric vehicle, which would affect the separation of the insert 17 from the positioning hole 11, and thus avoid affecting the disassembly of the protective ring 4.

[0027] 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 protective device for an electric vehicle motor, comprising: A motor protective cover (1) is provided with mounting holes (2) for installing the motor protective cover (1) at equal intervals in a ring. Screws (3) are provided at the mounting holes (2). A first annular groove (5) and a second annular groove (6) are provided on the motor protective cover (1). A protective component is provided on the motor protective cover (1). The protective component is characterized in that: the protective component includes a protective ring (4), a rubber ring pad (7), a protrusion (12), and an L-shaped lever (19).

2. The electric vehicle motor protection device according to claim 1, characterized in that: The protective ring (4) is snapped onto the side wall of the motor protective cover (1). The protective ring (4) covers the screw (3). The rubber ring gasket (7) is embedded in the first ring groove (5) and the second ring groove (6). The first insert ring (8) and the second insert ring (9) are fixedly provided on the side wall of the protective ring (4).

3. The electric vehicle motor protection device according to claim 2, characterized in that: The first insert ring (8) is inserted into the first ring groove (5), the second insert ring (9) is inserted into the second ring groove (6), and the inner ring wall of the protective ring (4) is fixedly provided with a locking block (10) at equal intervals, and the inner ring wall of the protective ring (4) is provided with a positioning insertion hole (11) at equal intervals.

4. The electric vehicle motor protection device according to claim 2, characterized in that: The motor protective cover (1) has equidistant annular protrusions (12) fixedly arranged on the side wall. The two sides of the protrusions (12) are engaged with the locking blocks (10). A square groove (13) is opened in the protrusions (12), and a sliding groove (14) is opened on the side wall of the square groove (13).

5. The electric vehicle motor protection device according to claim 4, characterized in that: A limiting block (15) is movably arranged in the square groove (13). A spring (16) is provided on the side end of the limiting block (15). An insert (17) is fixedly arranged on the side wall of the limiting block (15). The end of the insert (17) is inclined and the end of the insert (17) passes through the protrusion (12) and is inserted into the positioning hole (11).

6. The electric vehicle motor protection device according to claim 5, characterized in that: A slider (18) is fixedly installed on the side wall of the limiting block (15). The slider (18) is movably engaged in the groove (14). The end of the slider (18) is fixedly connected to the L-shaped lever (19). The L-shaped lever (19) is engaged with the protrusion (12). A trapezoidal block (20) is symmetrically fixedly installed on the side wall of the L-shaped lever (19). A trapezoidal groove (21) is symmetrically opened on the side wall of the protrusion (12). The trapezoidal block (20) is engaged with the trapezoidal groove (21). A hook groove (22) is opened on the side wall of the L-shaped lever (19). An elastic hook (23) is fixedly installed on the side wall of the protrusion (12). The hook groove (22) is engaged with the elastic hook (23).

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