Rear axle shaft structure of electric automobile
By designing a semi-axle structure of the rear axle of the electric vehicle that includes spline seats and docking mechanisms, the complex problem of spline replacement in the prior art is solved, and the simplicity of replacement and maintenance are achieved.
Patent Information
- Application Number
- CN202421548442.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-02
AI Technical Summary
When replacing splines of the rear axle half shaft of existing electric vehicles, spline replacement is more troublesome due to the complex assembly of the shaft and multiple parts.
A rear axle half-axle structure of an electric vehicle is designed, including a shaft and a washer. One end of the shaft is equipped with a washer, one side of the washer is installed with a flange, and one end of the shaft is away from the shaft is provided with a spline seat and a butt mechanism. The docking mechanism includes a sleeve, a docking rod, a docking groove and a fastening pad. By rotating the sleeve and fastening bolts, the spline seat is stably installed on the shaft for easy replacement.
It realizes simple replacement of the half-axle spline of the rear axle of the electric vehicle, reduces the disassembly and replacement of the entire shaft, and improves the convenience and safety of maintenance.
Smart Images
Figure CN222832639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rear axle semi-axles, in particular to a rear axle semi-axle structure of an electric vehicle. Background Art
[0002] The rear axle half shaft of an electric vehicle refers to the rear drive shaft for vehicle power transmission, which is composed of two half-bridges and can perform half-bridge differential movement. There are two types of rear axles, one is an integral bridge and the other is a half-bridge. The rear axle half shaft of an electric vehicle is assembled with the spline sleeve of the differential half-shaft gear through the spline. The flange plate at the outer end of the rear axle half shaft of the electric vehicle is fastened to the wheel of the electric vehicle through studs, nuts and other parts;
[0003] After the rear axle half shaft of the electric vehicle currently in use is installed and used with the electric vehicle, the grooves of the splines of the rear axle half shaft and the differential half shaft gear are worn after long-term use, and the shaft rod of the rear axle half shaft of the electric vehicle needs to be replaced. Since the shaft rod is assembled with multiple parts, it is more troublesome to replace the splines of the rear axle half shaft of the electric vehicle. Utility Model Content
[0004] The utility model aims to provide a rear axle half-axle structure of an electric vehicle to solve the problem raised in the above background technology that when the shaft rod of the rear axle half-axle of an electric vehicle currently on the market is replaced, it is troublesome to replace the spline of the rear axle half-axle of the electric vehicle because the shaft rod is assembled with multiple parts.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear axle half-axle structure of an electric vehicle, comprising a shaft rod and a washer, a washer is installed at one end of the shaft rod, and a flange is installed on the side of the washer away from the shaft rod, a spline seat is provided at the end of the shaft rod away from the washer, and a docking mechanism is provided on the side of the spline seat close to the shaft rod, the docking mechanism comprises a sleeve, a docking rod, a docking groove and a fastening pad, the side of the shaft rod close to the spline seat is movably connected to the sleeve through a bearing, and the spline seat is relatively connected to the sleeve.
[0006] Preferably, a docking rod is provided on the inner side of the sleeve, and the docking rod is fixed to the shaft rod.
[0007] Preferably, a docking groove is provided on a side of the spline seat close to the docking rod, and the docking groove is connected to the docking rod.
[0008] Preferably, a fastening pad is connected to one side of the sleeve close to the spline seat, and the fastening pad fits the spline seat.
[0009] Preferably, a limiting mechanism is arranged inside the spline seat, and the limiting mechanism includes a limiting groove, a fastening bolt and a gasket, and a limiting groove is opened inside the spline seat.
[0010] Preferably, the fastening bolt extends through the sleeve and engages with the limiting groove.
[0011] Preferably, a gasket is provided between the fastening bolt and the limiting groove.
[0012] Preferably, the gasket is sleeved with the fastening bolt.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the rear axle half-axle structure of the electric vehicle can rotate the sleeve to complete the installation of the spline seat with the shaft rod, and the reverse operation can disassemble the spline seat, making the spline replacement of the rear axle half-axle of the electric vehicle simple and easy to repair. The sleeve can be rotated to make it difficult to rotate, so that the spline seat is stably restricted to one end of the shaft rod, and the fastening bolt does not protrude from the surface of the shaft rod, so that the rear axle half-axle of the electric vehicle is safer and more stable after the spline seat is replaced, and the installation and use of the shaft rod is not affected.
[0014] 1. The rear axle half-axle structure of the electric vehicle, when the groove of the spline seat is worn and the shaft rod of the rear axle half-axle of the electric vehicle needs to be replaced, the spline seat is docked with the sleeve, when the spline seat is with the sleeve, the docking groove is docked with the docking rod, the sleeve is rotated, and the spline seat is threadedly connected with the sleeve, and the docking rod is in a rectangular structure, so that the spline seat cannot rotate, and can only be telescopically moved along the docking rod, so that the spline seat moves in the direction of the shaft rod, so that the spline seat is restricted to one end of the shaft rod, so that the spline seat is installed with the shaft rod, and the reverse operation can disassemble the spline seat, so that when the spline of the rear axle half-axle of the electric vehicle is replaced, there is no need to disassemble and replace the entire shaft rod, only the spline seat needs to be replaced, so that the spline of the rear axle half-axle of the electric vehicle is simple to replace, and the rear axle half-axle of the electric vehicle is easy to repair;
[0015] 2. The rear axle half-axle structure of the electric vehicle, when the spline seat and the shaft rod are installed, the limit groove is aligned with the through hole of the sleeve installation fastening bolt, the fastening bolt is rotated, and the limit groove is threadedly connected with the fastening bolt, so that the fastening bolt and the limit groove are docked, so that the sleeve is restricted and difficult to rotate, so that the spline seat is stably restricted to one end of the shaft rod, and the fastening bolts are distributed at equal angles, and the fastening bolts do not protrude from the surface of the shaft rod, so that the rear axle half-axle of the electric vehicle is safer and more stable after the spline seat is replaced, and the installation and use of the shaft rod is not affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the docking mechanism of the utility model;
[0018] Figure 3It is a schematic diagram of the left-side cross-sectional structure of the limiting mechanism of the utility model.
[0019] In the figure: 1, shaft; 2, washer; 3, flange; 4, spline seat; 5, docking mechanism; 51, sleeve; 52, docking rod; 53, docking groove; 54, fastening pad; 6, limiting mechanism; 61, limiting groove; 62, fastening bolt; 63, gasket. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model provides a technical solution: a rear axle half-axle structure of an electric vehicle, comprising a shaft rod 1 and a washer 2, one end of the shaft rod 1 is equipped with the washer 2, and the side of the washer 2 away from the shaft rod 1 is equipped with a flange 3, the end of the shaft rod 1 away from the washer 2 is provided with a spline seat 4, and the side of the spline seat 4 close to the shaft rod 1 is provided with a docking mechanism 5, the docking mechanism 5 includes a sleeve 51, a docking rod 52, a docking groove 53 and a fastening pad 54, the side of the shaft rod 1 close to the spline seat 4 is movably connected to the sleeve 51 through a bearing, and the spline seat 4 and the sleeve The tubes 51 are connected to each other, a docking rod 52 is arranged on the inner side of the sleeve 51, and the docking rod 52 is fixed to the shaft rod 1, a docking groove 53 is opened on the side of the spline seat 4 close to the docking rod 52, and the docking groove 53 is connected to the docking rod 52, a fastening pad 54 is connected to the side of the sleeve 51 close to the spline seat 4, and the fastening pad 54 is fitted with the spline seat 4, the spline seat 4 and the sleeve 51 are threadedly connected, the docking rod 52 is a rectangular structure, the cross-sectional size of the docking rod 52 matches the cross-sectional size of the docking groove 53, and the fastening pad 54 is made of rubber.
[0022] When the groove of the spline seat 4 is worn and the shaft rod 1 of the rear axle half shaft of the electric vehicle needs to be replaced, the spline seat 4 is docked with the sleeve 51. When the spline seat 4 is connected with the sleeve 51, the docking groove 53 is docked with the docking rod 52, and the sleeve 51 is rotated. The spline seat 4 and the sleeve 51 are threadedly connected, and the docking rod 52 is a rectangular structure, so that the spline seat 4 cannot rotate and can only be telescopically moved along the docking rod 52, so that the spline seat 4 moves in the direction of the shaft rod 1, so that the spline seat 4 is restricted to one end of the shaft rod 1, and the fastening pad 54 is made of rubber material. The spline seat 4 is more tightly restricted to the shaft rod 1, so that the spline seat 4 is installed with the shaft rod 1, and because the docking rod 52 is a rectangular structure, when the spline seat 4 and the differential half-shaft gear move, the shaft rod 1 can be directly driven, and there is no friction between the spline seat 4 and the sleeve 51. The reverse operation can disassemble the spline seat 4, so that when the spline of the rear axle half shaft of the electric vehicle is replaced, there is no need to disassemble and replace the entire shaft rod 1, and only the spline seat 4 needs to be replaced, which makes it simple to replace the spline of the rear axle half shaft of the electric vehicle, and makes the rear axle half shaft of the electric vehicle easy to repair.
[0023] A limiting mechanism 6 is arranged inside the spline seat 4, and the limiting mechanism 6 includes a limiting groove 61, a fastening bolt 62 and a gasket 63. The limiting groove 61 is arranged inside the spline seat 4, and the fastening bolt 62 extends through the sleeve 51 and is connected to the limiting groove 61. A gasket 63 is arranged between the fastening bolt 62 and the limiting groove 61, and the gasket 63 is sleeved with the fastening bolt 62. The limiting groove 61 is threadedly connected to the fastening bolt 62, and the fastening bolts 62 are distributed at equal angles.
[0024] When the spline seat 4 and the shaft rod 1 are installed, the limiting groove 61 is aligned with the through hole of the sleeve 51 for installing the fastening bolt 62, and the fastening bolt 62 is rotated to be threadedly connected with the limiting groove 61 and the fastening bolt 62, so that the fastening bolt 62 is docked with the limiting groove 61, so that the sleeve 51 is restricted and difficult to rotate, so that the spline seat 4 is stably restricted to one end of the shaft rod 1, and the gasket 63 sleeved by the fastening bolt 62 makes it difficult for the fastening bolt 62 to loosen with the limiting groove 61, so that the spline seat 4 is more stably restricted to the shaft rod 1, and the fastening bolts 62 are distributed at equal angles and do not protrude from the surface of the shaft rod 1, so that the rear axle half shaft of the electric vehicle is safer and more stable after the spline seat 4 is replaced, and the installation and use of the shaft rod 1 is not affected.
[0025] In summary, when the groove of the spline seat 4 is worn and the shaft rod 1 of the rear axle half shaft of the electric vehicle needs to be replaced, the spline seat 4 is docked with the sleeve 51, and the sleeve 51 is rotated to limit the spline seat 4 to one end of the shaft rod 1. Since the docking rod 52 is a rectangular structure, the spline seat 4 can be disassembled by reverse operation, so that when the splines of the rear axle half shaft of the electric vehicle are replaced, only the spline seat 4 needs to be replaced, which makes the spline replacement of the rear axle half shaft of the electric vehicle simple and convenient for maintenance. When the spline seat 4 and the shaft rod 1 are installed, the fastening bolts 62 are rotated to make the sleeve 51 difficult to rotate, so that the spline seat 4 is stably limited to one end of the shaft rod 1, and the fastening bolts 62 are distributed at equal angles, and the fastening bolts 62 do not protrude from the surface of the shaft rod 1, so that the rear axle half shaft of the electric vehicle is safer and more stable after the spline seat 4 is replaced, and does not affect the installation and use of the shaft rod 1. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rear axle half-axle structure of an electric vehicle, comprising a shaft rod (1) and a washer (2), characterized in that: A washer (2) is installed at one end of the shaft rod (1), and a flange (3) is installed on the side of the washer (2) away from the shaft rod (1); a spline seat (4) is provided at the end of the shaft rod (1) away from the washer (2), and a docking mechanism (5) is provided on the side of the spline seat (4) close to the shaft rod (1); the docking mechanism (5) comprises a sleeve (51), a docking rod (52), a docking groove (53) and a fastening pad (54); the side of the shaft rod (1) close to the spline seat (4) is movably connected to the sleeve (51) through a bearing, and the spline seat (4) and the sleeve (51) are in contact with each other.
2. The rear axle half-axle structure of an electric vehicle according to claim 1, characterized in that: A docking rod (52) is provided on the inner side of the sleeve (51), and the docking rod (52) is fixed to the shaft rod (1).
3. The rear axle half-axle structure of an electric vehicle according to claim 2, characterized in that: A docking groove (53) is provided on one side of the spline seat (4) close to the docking rod (52), and the docking groove (53) is connected to the docking rod (52).
4. The rear axle half-axle structure of an electric vehicle according to claim 1, characterized in that: A fastening pad (54) is connected to one side of the sleeve (51) close to the spline seat (4), and the fastening pad (54) is in close contact with the spline seat (4).
5. The rear axle half-axle structure of an electric vehicle according to claim 4, characterized in that: A limiting mechanism (6) is arranged inside the spline seat (4), and the limiting mechanism (6) comprises a limiting groove (61), a fastening bolt (62) and a gasket (63). The limiting groove (61) is arranged inside the spline seat (4).
6. The rear axle half-axle structure of an electric vehicle according to claim 5, characterized in that: The fastening bolt (62) penetrates through the protruding sleeve (51) and is connected to the limiting groove (61).
7. The rear axle half-axle structure of an electric vehicle according to claim 6, characterized in that: A gasket (63) is provided between the fastening bolt (62) and the limiting groove (61).
8. The rear axle half-axle structure of an electric vehicle according to claim 7, characterized in that: The gasket (63) is sleeved with the fastening bolt (62).