CN211117089U - Hollow rotating shaft structure for motor - Google Patents
Hollow rotating shaft structure for motor Download PDFInfo
- Publication number
- CN211117089U CN211117089U CN201921822419.XU CN201921822419U CN211117089U CN 211117089 U CN211117089 U CN 211117089U CN 201921822419 U CN201921822419 U CN 201921822419U CN 211117089 U CN211117089 U CN 211117089U
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- motor
- axle head
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- axle
- rotating shaft
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Abstract
The utility model discloses a hollow rotating shaft structure for motor, this structure includes motor front axle and motor rear axle, and the motor front axle includes the power take off axle head and by the first concatenation section that the power take off axle head extends, and the power take off axle head is solid construction, and first concatenation section is hollow structure, and the motor rear axle is including supporting the axle head and by the second concatenation section that supports the axle head extension, and support axle head and second concatenation section are hollow structure, and first concatenation section is inlayed cover and interference with second concatenation section and is connected. The structure meets the performance requirement of the motor rotating shaft, effectively avoids the resonance risk caused by the high rotating speed of the motor, reduces the weight of the motor, improves the power density of the motor, and meets the requirement of light weight of an automobile.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a hollow rotating shaft structure for motor.
Background
With the development of the automobile industry, the light weight of the electric automobile is a future development trend, and therefore, the high speed and light weight of the driving motor for the electric automobile are also technical problems to be solved; traditional motor shaft is mostly the solid construction who has certain weight, and the actual operating speed of high rotational speed motor may get into resonance influence district, produces the resonance risk, and above-mentioned problem accessible adopts the hollow shaft structure and reduces rotor weight and solves. The hollow shaft structure solves the problems, reduces the weight of the motor, improves the power density of the motor and meets the requirement of light weight of the automobile.
Disclosure of Invention
The utility model aims to solve the technical problem that a hollow rotating shaft structure for motor is provided, this structure satisfies motor shaft's performance requirement, effectively avoids the resonance risk that the high rotational speed of motor arouses, reduces motor weight, improves motor power density, adapts to car lightweight demand.
For solving the technical problem, the utility model discloses a hollow rotating shaft structure for motor includes motor front axle and motor rear axle, the motor front axle include the power take off axle head and by the first concatenation section that the power take off axle head extends, the power take off axle head is solid construction, first concatenation section is hollow structure, the motor rear axle including support the axle head and by the second concatenation section that the support axle head extends, support axle head and second concatenation section are hollow structure, first concatenation section is inlayed cover and interference with second concatenation section and is connected.
Furthermore, the second splicing section is embedded in the inner cavity of the first splicing section, and the end face of the first splicing section is flush with the end face of the outer side of the second splicing section.
Furthermore, the excircle of the second splicing section is a smooth cylinder with the same diameter.
Further, the motor front shaft and the motor rear shaft are made of alloy steel materials through machining, forging or extrusion processes.
Because the utility model discloses a hollow rotating shaft structure for motor has adopted above-mentioned technical scheme, this structure includes motor front axle and motor rear axle promptly, and the motor front axle includes the power take off axle head and by the first concatenation section that the power take off axle head extends, and the power take off axle head is solid construction, and first concatenation section is hollow structure, and the motor rear axle is including supporting the axle head and by the second concatenation section that supports the axle head extension, and support axle head and second concatenation section are hollow structure, and first concatenation section is inlayed cover and interference with the second concatenation section and is connected. The structure meets the performance requirement of the motor rotating shaft, effectively avoids the resonance risk of high rotating speed of the motor, reduces the weight of the motor, improves the power density of the motor, and meets the requirement of light weight of an automobile.
Drawings
The invention will be described in further detail with reference to the following drawings and embodiments:
fig. 1 is a schematic view of the structure of the hollow rotating shaft for the motor of the present invention.
Detailed Description
Embodiment is shown in fig. 1, the utility model discloses a hollow rotating shaft structure for motor includes motor front axle 1 and motor rear axle 2, motor front axle 1 include power take off axle head 11 and by the first concatenation section 12 that power take off axle head 11 extends, power take off axle head 11 is solid construction, first concatenation section 12 is hollow structure, motor rear axle 2 including support axle head 21 and by the second concatenation section 22 that support axle head 21 extends, support axle head 21 with second concatenation section 22 is hollow structure, first concatenation section 12 is inlayed cover and interference with second concatenation section 22 and is connected.
Preferably, the second segment 22 is inserted into the inner cavity of the first segment 12, and the end surface of the first segment 12 is flush with the outer end surface 23 of the second segment 22. Therefore, the first splicing section forms a complete middle shaft section of the motor rotating shaft, and the assembly of other parts such as a rotor and the like is facilitated.
Preferably, the outer circle of the second splicing section 22 is a smooth cylinder with the same diameter. The equal-diameter smooth cylinder is convenient for machining, and the machining cost is reduced.
Preferably, the motor front shaft 1 and the motor rear shaft 2 are made of alloy steel materials through machining, forging or extrusion processes. The hollow rotating shaft structure can be manufactured by adopting various processing modes, the material and manufacturing cost is reduced, and the processing is convenient.
The existing interference spliced motor hollow shaft is mostly spliced by three or more sections, one splicing position is positioned between a power output part and a power input part of a rotating shaft, the interference connection at the position can bear the torque action of the power output part and the power input part, and the reliability of the interference connection can be seriously influenced. The structure adopts interference splicing of the front shaft and the rear shaft, the power output part and the power input part of the front shaft are integrally formed, the splicing part is not arranged between the power output part and the power input part, the splicing part is not affected by torque, and the reliability is superior to that of the traditional three-section or more interference splicing hollow shaft.
In the hollow rotating shaft structure, the motor front shaft and the motor rear shaft are spliced into a whole through the first splicing section and the second splicing section, an integrated motor rotating shaft is formed after splicing, the power output end of the integrated motor rotating shaft is of a solid structure, the middle part of the integrated motor rotating shaft is of a hollow structure, and compared with an integrally hollow motor rotating shaft, the IPX7 sealing performance of a motor cavity can be realized without additionally arranging a sealing part at the hollow part; and compare whole solid motor shaft, its weight obtains reducing by a wide margin to effectively solve the resonance risk problem that the high rotational speed of motor arouses, reduce the whole weight of motor, improve motor power density, adapt to the light-weighted demand of electric automobile.
Claims (4)
1. The utility model provides a hollow rotating shaft structure for motor which characterized in that: this structure includes motor front axle and motor rear axle, the motor front axle include the power take off axle head and by the first concatenation section that the power take off axle head extends, the power take off axle head is solid construction, first concatenation section is hollow structure, the motor rear axle including support the axle head and by support the second concatenation section that the axle head extends, support axle head and second concatenation section and be hollow structure, first concatenation section is inlayed cover and interference with the second concatenation section and is connected.
2. The hollow rotating shaft structure for an electric motor according to claim 1, wherein: the second splicing section is embedded in the inner cavity of the first splicing section, and the end face of the first splicing section is flush with the end face of the outer side of the second splicing section.
3. The hollow rotating shaft structure for an electric motor according to claim 1 or 2, wherein: the excircle of the second splicing section is a smooth cylinder with the same diameter.
4. The hollow rotating shaft structure for an electric motor according to claim 3, wherein: the motor front shaft and the motor rear shaft are made of alloy steel materials through machining, forging or extrusion processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822419.XU CN211117089U (en) | 2019-10-28 | 2019-10-28 | Hollow rotating shaft structure for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822419.XU CN211117089U (en) | 2019-10-28 | 2019-10-28 | Hollow rotating shaft structure for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117089U true CN211117089U (en) | 2020-07-28 |
Family
ID=71690586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921822419.XU Active CN211117089U (en) | 2019-10-28 | 2019-10-28 | Hollow rotating shaft structure for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211117089U (en) |
-
2019
- 2019-10-28 CN CN201921822419.XU patent/CN211117089U/en active Active
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