Gear for speed reducer of electric vehicle
By designing the clamping and bolting connection between the detachable unit and the wheel frame, the problem of partial wear and overall replacement of electric vehicle reducer gear is solved, and the cost and efficiency improvement of local replacement are reduced.
Patent Information
- Application Number
- CN202422564877.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The gears of existing electric vehicle reducer need to be replaced as a whole due to local wear of teeth, resulting in waste of resources and increased costs.
A gear structure including a detachable unit and a cover ring is designed. The tight connection between the detachable unit and the wheel frame is achieved through snap-on and bolted connection. When the partial gear teeth are damaged, only the detachable unit needs to be replaced to avoid overall replacement.
It reduces the cost of use, improves work efficiency, extends the service life of gears, and reduces resource waste.
Smart Images
Figure CN223076159U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of reducer gears, and particularly to a gear for an electric vehicle reducer. Background Art
[0002] A speed reducer is actually a power transmission mechanism that does not generate power itself. Its function is to use different gear sizes and speed converters to reduce the rotation speed of the motor (motor) to the rotation speed required by itself and obtain a mechanism with a larger torque. Since the motor is directly connected to the equipment, when the equipment is running, the load on the motor is very large. If the rotation speed of the motor is directly adjusted, it will cause great damage to the motor. However, with a speed reducer, it is different. For example, for a speed reducer with a reduction ratio of one hundred, the load on the motor during machine operation is only one percent.
[0003] Since the speed reducer achieves its working effect through the meshing transmission between gears, the gear teeth inside it will be subjected to extrusion and friction for a long time, which is extremely likely to cause wear of the gear teeth. Most of the existing gears are of an integrally formed structure. When a local tooth is damaged, the entire gear needs to be replaced to ensure the normal operation of the speed reducer, which will cause waste of resources. Therefore, in view of the above problems, a gear for an electric vehicle reducer is proposed herein. Utility Model Content
[0004] Aiming at the deficiencies of the prior art, this application provides a gear for an electric vehicle reducer, which overcomes the deficiencies of the prior art and aims to solve the problem that most of the existing gears are integrally formed, and when a local tooth is damaged, the entire gear needs to be replaced, resulting in waste of resources.
[0005] To achieve the above object, this application provides the following technical solutions:
[0006] A gear for an electric vehicle reducer includes a wheel frame, six detachable units, and a cover ring. Six groups of clamping shafts are fixedly arranged on the wheel frame. Each detachable unit includes a curved plate. Gear teeth are fixedly arranged on the outer curved surface of the curved plate, and a clamping block is fixedly arranged on the inner curved surface of the curved plate. Bayonet openings are formed on both sides of the clamping block. The detachable unit is fixedly connected to the wheel frame by being clamped on the clamping shaft through the bayonet openings. The cover ring covers the outside of the detachable unit and fits tightly with it.
[0007] By adopting the above technical solution, a tight and firm detachable connection between the detachable unit and the wheel carrier can be achieved. When some of the teeth are worn out and cannot be used normally, only the corresponding detachable unit needs to be replaced to maintain the normal operation of the whole gear, avoiding the situation where the whole gear must be replaced due to the damage of some teeth, reducing the use cost. In particular, the connection between the detachable unit and the wheel carrier mainly uses snap connection supplemented by bolts, which is convenient for disassembling and installing the detachable unit, thereby improving work efficiency.
[0008] As a preferred technical solution of the present application, two sets of threaded slot holes at different positions are provided on the wheel carrier, and each set of threaded slot holes includes six threaded slot holes evenly distributed in a circumferential array.
[0009] By adopting the above technical solution, a necessary structural basis is provided for the bolt connection between the detachable unit, the cover ring and the wheel carrier.
[0010] As a preferred technical solution of the present application, a first connection through hole is provided in the middle of the clamping block, and the clamping block is fixedly connected to the wheel carrier through a connection bolt.
[0011] By adopting the above technical solution, the connection bolt can apply a squeezing force to the clamping block, ensuring that the clamping block is in close contact with the wheel carrier and avoiding the shaking of the detachable unit during the transmission process, which affects the normal progress of the transmission.
[0012] As a preferred technical solution of the present application, the cover ring includes a ring body, six connecting convex blocks evenly arranged in a circumferential array are fixedly provided on the inner side surface of the ring body, side grooves are provided on both sides of the connecting convex blocks, a second connection through hole is provided on the connecting convex blocks, and the connecting convex blocks are fixedly connected to the wheel carrier through connection bolts.
[0013] By adopting the above technical solution, the clamping between the connecting convex block and the clamping shaft can play an auxiliary connection role, and at the same time, the connecting convex block can effectively prevent the clamping shaft from being deformed by force, thereby improving the overall service life. After the connecting convex block is fixedly connected to the wheel carrier, the ring body can closely fit on the surface of the clamping block, further preventing the clamping block from shaking.
[0014] As a preferred technical solution of the present application, the cross-sectional shape of the bayonet is a semicircle and its curvature is the same as the cross-sectional curvature of the clamping shaft, and the cross-sectional shape of the side groove is a semicircle and its curvature is the same as the cross-sectional curvature of the clamping shaft.
[0015] By adopting the above technical solution, the clamping block and the connecting convex block can both be closely attached to the clamping shaft, making it difficult for local structures of the whole gear structure to shake during the working process.
[0016] As a preferred technical solution of the present application, a first convex ring is fixedly arranged on the wheel carrier, a second convex ring is fixedly arranged on the ring body, and the outer curved surfaces of both the first convex ring and the second convex ring are in close fit with the inner curved surface of the clamping block.
[0017] By adopting the above technical solution, the first convex ring and the second convex ring can support the end of the clamping block, avoiding the situation that the clamping block shakes due to repeated external bending moment.
[0018] The beneficial effects of the present application: It can achieve a tight and firm detachable connection between the detachable unit and the wheel carrier. When a local tooth is worn out and cannot be used normally, only the corresponding detachable unit needs to be replaced to maintain the normal operation of the entire gear, avoiding the situation that the entire gear must be replaced due to the damage of a local tooth, reducing the use cost. In particular, the connection method between the detachable unit and the wheel carrier is mainly by clamping and supplemented by bolts, which can facilitate the disassembly and installation of the detachable unit, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic diagram of the overall structure of the present application;
[0020] Figure 2 is a schematic diagram of the detachable connection structure of the present application;
[0021] Figure 3 is a schematic diagram of the detachable unit structure of the present application;
[0022] Figure 4 is a schematic diagram of the cover ring structure of the present application.
[0023] In the figure: 1, wheel carrier; 11, clamping shaft; 12, first convex ring; 13, threaded slot hole; 2, detachable unit; 21, curved plate; 22, teeth; 23, clamping block; 231, bayonet; 232, first connection through hole; 3, cover ring; 31, ring body; 32, connection convex block; 321, side groove; 33, second convex ring; 34, second connection through hole; 4, connection bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0025] Refer to Figures 1-3, A gear for an electric vehicle reducer, comprising a wheel carrier 1, six detachable units 2 and a cover ring 3. Six groups of clamping shafts 11 are fixedly arranged on the wheel carrier 1. The detachable unit 2 includes a curved plate 21. Tooth wheels 22 are fixedly arranged on the outer curved surface of the curved plate 21, and clamping blocks 23 are fixedly arranged on the inner curved surface of the curved plate 21. Bayonet openings 231 are formed on both sides of the clamping block 23. The detachable unit 2 is fixedly connected to the wheel carrier 1 by being clamped on the clamping shaft 11 through the bayonet openings 231. The cover ring 3 covers the outside of the detachable unit 2 and fits tightly with it. By adopting the above technical solution, a tightly and firmly detachable connection between the detachable unit 2 and the wheel carrier 1 can be achieved. When a local tooth wheel 22 is worn out and cannot be used normally, only the corresponding detachable unit 2 needs to be replaced to maintain the normal operation of the entire gear, avoiding the situation where the entire gear must be replaced due to the damage of a local tooth wheel 22, reducing the use cost. In particular, the connection between the detachable unit 2 and the wheel carrier 1 adopts a connection method mainly based on clamping and supplemented by bolts, which can facilitate the disassembly and installation of the detachable unit 2, thereby improving work efficiency.
[0026] Refer to Figures 2-3 , Two groups of threaded groove holes 13 with different positions are formed on the wheel carrier 1. Each group of threaded groove holes 13 includes six threaded groove holes 13 arranged equidistantly in a circumferential array. This structural form provides a necessary structural basis for the bolt connection between the detachable unit 2, the cover ring 3 and the wheel carrier 1. A first connection through hole 232 is formed in the middle of the clamping block 23. The clamping block 23 is fixedly connected to the wheel carrier 1 through a connection bolt 4. By adopting the above technical solution, the connection bolt 4 can apply an extrusion force to the clamping block 23, ensuring that the clamping block 23 is in close contact with the wheel carrier 1 and avoiding the shaking of the detachable unit 2 during the transmission process, which may affect the normal progress of the transmission.
[0027] Refer to Figure 4 , The cover ring 3 includes a ring body 31. Six connection convex blocks 32 arranged equidistantly in a circumferential array are fixedly arranged on the inner side surface of the ring body 31. Side grooves 321 are formed on both sides of the connection convex blocks 32. A second connection through hole 34 is formed on the connection convex blocks 32. The connection convex blocks 32 are fixedly connected to the wheel carrier 1 through a connection bolt 4. By adopting the above technical solution, the clamping of the connection convex blocks 32 and the clamping shafts 11 can play an auxiliary connection role. At the same time, the connection convex blocks 32 can effectively prevent the clamping shafts 11 from being deformed by force, thereby improving the overall service life. After the connection convex blocks 32 are fixedly connected to the wheel carrier 1, the ring body 31 can closely fit on the surface of the clamping block 23, further preventing the clamping block 23 from shaking.
[0028] Refer to Figures 3-4, the cross-sectional shape of the bayonet 231 is semi-circular and its curvature is consistent with the cross-sectional curvature of the clamping shaft 11. The cross-sectional shape of the side groove 321 is semi-circular and its curvature is consistent with the cross-sectional curvature of the clamping shaft 11. By adopting the above technical solution, the clamping block 23 and the connecting lug 32 can be closely attached to the clamping shaft 11, so that local structural shaking is not likely to occur during the operation of the entire gear structure.
[0029] Refer to Figure 2 , Figure 4 , a first convex ring 12 is fixedly arranged on the wheel carrier 1, and a second convex ring 33 is fixedly arranged on the ring body 31. The outer curved surfaces of both the first convex ring 12 and the second convex ring 33 are closely attached to the inner curved surface of the clamping block 23. By adopting the above technical solution, the first convex ring 12 and the second convex ring 33 can support the end of the clamping block 23, avoiding the situation that the clamping block 23 shakes due to repeated external bending moment.
[0030] Working principle: Since the detachable unit 2 is fixedly connected to the wheel carrier 1 by being clamped on the clamping shaft 11 through the bayonet 231, a tightly and firmly detachable connection between the detachable unit 2 and the wheel carrier 1 can be achieved. When a local tooth 22 is worn out and cannot be used normally, only the corresponding detachable unit 2 needs to be replaced to maintain the normal operation of the entire gear, avoiding the situation that the entire gear must be replaced due to the damage of a local tooth 22, reducing the use cost. In particular, the connection between the detachable unit 2 and the wheel carrier 1 mainly uses clamping supplemented by bolts, which can facilitate the disassembly and installation of the detachable unit 2, thereby improving work efficiency.
[0031] In addition, since the left and right sides of the clamping block 23 are closely attached to the clamping shaft 11 and the connecting lug 32, the upper and lower sides of the clamping block 23 are respectively closely attached to the wheel carrier 1 and the cover ring 3, and the rear end of the clamping block 23 is closely attached to the first convex ring 12 and the second convex ring 33. This fully enclosed structural form can ensure that the clamping block 23 can be supported in all directions, avoiding the situation that the detachable unit 2 shakes as a whole due to the shaking of the clamping block 23 caused by repeated external bending moment, which affects the transmission.
[0032] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A gear for an electric vehicle reducer, comprising a wheel carrier (1), six detachable units (2) and a retaining ring (3), characterized in that, Six groups of clamping shafts (11) are fixedly arranged on the wheel frame (1). The detachable unit (2) includes a curved plate (21). Gear teeth (22) are fixedly arranged on the outer curved surface of the curved plate (21). A clamping block (23) is fixedly arranged on the inner curved surface of the curved plate (21). Bayonet openings (231) are formed on both sides of the clamping block (23). The detachable unit (2) is fixedly connected to the wheel frame (1) by being clamped on the clamping shaft (11) through the bayonet openings (231). The cover ring (3) covers the outside of the detachable unit (2) and fits tightly with it.
2. The gear for an electric vehicle reducer according to claim 1, characterized in that, Two sets of threaded slot holes (13) at different positions are formed on the wheel frame (1). Each set of threaded slot holes (13) includes six threaded slot holes (13) evenly distributed in a circumferential array.
3. A gear for an electric vehicle reducer according to claim 1, characterized in that, A first connection through hole (232) is formed in the middle of the clamping block (23). The clamping block (23) is fixedly connected to the wheel frame (1) by a connection bolt (4).
4. A gear for an electric vehicle reducer according to claim 1, characterized in that, The cover ring (3) includes a ring body (31). Six connection convex blocks (32) evenly arranged in a circumferential array are fixedly arranged on the inner side surface of the ring body (31). Side grooves (321) are formed on both sides of the connection convex blocks (32). A second connection through hole (34) is formed in the connection convex blocks (32). The connection convex blocks (32) are fixedly connected to the wheel frame (1) by a connection bolt (4).
5. A gear for an electric vehicle reducer according to claim 4, characterized in that, The cross-sectional shape of the bayonet opening (231) is semi-circular and its curvature is the same as the cross-sectional curvature of the clamping shaft (11). The cross-sectional shape of the side groove (321) is semi-circular and its curvature is the same as the cross-sectional curvature of the clamping shaft (11).
6. A gear for an electric vehicle reducer according to claim 4, characterized in that, A first convex ring (12) is fixedly arranged on the wheel frame (1). A second convex ring (33) is fixedly arranged on the ring body (31). The outer curved surfaces of both the first convex ring (12) and the second convex ring (33) are in close contact with the inner curved surface of the clamping block (23).