CN220874343U - Split motor shaft - Google Patents
Split motor shaft Download PDFInfo
- Publication number
- CN220874343U CN220874343U CN202322669716.8U CN202322669716U CN220874343U CN 220874343 U CN220874343 U CN 220874343U CN 202322669716 U CN202322669716 U CN 202322669716U CN 220874343 U CN220874343 U CN 220874343U
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- CN
- China
- Prior art keywords
- motor shaft
- sleeve
- bearing
- hole
- split
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009434 installation Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 2
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Abstract
The utility model relates to a split motor shaft which comprises a stator, a motor shaft, a bearing, a shaft sleeve and a bearing sleeve, wherein the motor shaft hole is formed in the stator, the end part of the motor shaft penetrates through the motor shaft hole and forms a mounting part, the shaft sleeve is sleeved on the mounting part, and the bearing sleeve is sleeved on the outer wall of the shaft sleeve. The motor shaft is characterized by further comprising a fixing flange, wherein the fixing flange is installed at the end part of the installation part in a threaded manner, and the shaft sleeve and the motor shaft are fixed. Compared with the prior art, the shaft sleeve and the motor shaft are produced as two independent components which can be mutually installed, and the shaft sleeve and the motor shaft are fixed by the fixing flange, so that the installation and the disassembly are convenient; the diameter of the inner hole of the bearing is not limited by the diameter of the motor shaft hole, so that a mechanical barrier that the diameter of the inner hole of the bearing is smaller than the diameter of the motor shaft hole is broken through, the size of the bearing is increased, and the radial and axial loads bearable by the bearing are increased.
Description
Technical Field
The utility model relates to a split motor shaft, and belongs to the technical field of motors.
Background
The hub motor for the electric vehicle comprises a motor shaft, a bearing, an end cover and a stator, wherein a shaft sleeve is usually integrally formed on the existing motor shaft, and the shaft sleeve prevents the motor shaft from being worn and protects the motor shaft. The shaft sleeve is arranged in the inner hole of the stator in a penetrating way, and the diameter of the inner hole of the stator is required to be larger than the outer diameter of the shaft sleeve at the moment so as to realize the installation of the motor shaft. The bearing sleeve is arranged outside the shaft sleeve and is arranged on the end cover. The diameter of the inner bore of the bearing corresponds to the outer diameter of the shaft sleeve, i.e. the diameter of the inner bore of the bearing must be smaller than the diameter of the inner bore of the stator, which simultaneously results in the outer diameter of the bearing being limited in size, the bearing being used for carrying radial and axial loads, and the small size bearing being able to carry small loads, which results in the motor being prone to damage.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art and provides a split motor shaft formed by splitting a shaft sleeve and a motor shaft.
The technical scheme adopted for realizing the purpose is as follows:
The utility model provides a split type motor shaft, includes stator, motor shaft and bearing, the system has the motor shaft hole on the stator, still includes the axle sleeve, the tip of motor shaft passes the motor shaft hole forms the installation department, the axle sleeve cover is established and is installed on the installation department, the bearing housing is established on the outer wall of axle sleeve.
As a further optimization of the above technical solution: the motor shaft is characterized by further comprising a fixing flange, wherein the fixing flange is installed at the end part of the installation part in a threaded manner, and the shaft sleeve and the motor shaft are fixed.
As a further optimization of the above technical solution: the shaft sleeve comprises a sleeve portion and a matching portion, a through hole for the installation portion to pass through is formed in the sleeve portion, an installation groove communicated with the through hole is formed in the matching portion, the fixing flange is located in the installation groove and contacts with the bottom of the installation groove, and the bearing sleeve is arranged on the outer wall of the matching portion.
As a further optimization of the above technical solution: the outer diameter of the matching part is larger than that of the sleeving part.
As a further optimization of the above technical solution: a circle of shaft sleeve steps are formed on the matching part, and the bearing is contacted with the shaft sleeve steps.
As a further optimization of the above technical solution: the motor shaft is provided with a positioning step, and the positioning step and the shaft sleeve are respectively positioned at two sides of the motor shaft hole.
As a further optimization of the above technical solution: the motor is characterized by further comprising a shell, a side cover, a tire and a magnetic conduction ring, wherein the bearing is arranged on the side cover, a mounting ring is arranged on the side face of the shell, the tire is sleeved on the mounting ring, the end part of the motor shaft penetrates through the shell, a plurality of magnetic steels are arranged on the inner wall of the magnetic conduction ring, the magnetic conduction ring is sleeved on the outer side of the stator, the magnetic conduction ring is in contact with the inner wall of the mounting ring, and the side cover is arranged at the end part of the magnetic conduction ring.
Compared with the prior art, the shaft sleeve and the motor shaft are produced as two independent components which can be mutually installed, but are not integrally formed, and the shaft sleeve and the motor shaft are fixed by the fixed flange, so that the installation and the disassembly are convenient; the shaft sleeve is not positioned in the motor shaft hole, the shaft sleeve can still protect the motor shaft, but the outer diameter of the shaft sleeve is not limited by the motor shaft hole, and the diameter of the motor shaft hole is as long as the end part of the motor shaft can pass through; the diameter of the motor shaft hole is reduced, so that the stator strength is higher; meanwhile, the diameter of the inner hole of the bearing is not limited by the diameter of the motor shaft hole, so that a mechanical barrier that the diameter of the inner hole of the bearing is necessarily smaller than the diameter of the motor shaft hole is broken through, the size of the bearing is increased, and the radial and axial loads born by the bearing are increased; the shaft sleeve can be replaced after being worn to a certain extent, and the shaft sleeve can be replaced by unscrewing the fixed flange, so that the cost is much lower than that of replacing a motor shaft.
Drawings
Fig. 1 is a schematic diagram of an explosive structure of the present utility model.
Fig. 2 is a schematic cross-sectional structure of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and the detailed description. As shown in fig. 1-2, a split motor shaft includes a stator 3, a motor shaft 1, a sleeve 2, a bearing 4, and a fixing flange 5. The stator 3 is provided with a motor shaft hole 31, the motor shaft 1 is provided with a positioning step 11, and the end part of the motor shaft 1 passes through the motor shaft hole 31 and forms an installation part 12. The shaft sleeve 2 is sleeved on the mounting part 12, and the fixing flange 5 is installed at the end part of the mounting part 12 in a threaded manner to fix the shaft sleeve 2 and the motor shaft 1. The positioning step 11 and the shaft sleeve 2 are respectively positioned at two sides of the motor shaft hole 31. The bearing 4 is sleeved on the outer wall of the shaft sleeve 2.
The shaft sleeve 2 and the motor shaft 1 are formed in a split mode and can be mutually installed, the shaft sleeve 2 and the motor shaft 1 are fixed by the fixing flange 5, and the installation and the disassembly are convenient. And the shaft sleeve 2 is sleeved at the end part of the motor shaft 1 passing through the motor shaft hole 31, but is not positioned in the motor shaft hole 31, the shaft sleeve 2 still can protect the motor shaft, but the outer diameter of the shaft sleeve 2 is not limited by the motor shaft hole 31, and the diameter of the motor shaft hole 31 can be equal to the diameter of the end part of the motor shaft 1. The reduction in the diameter of the motor shaft hole 31 makes the stator stronger. Meanwhile, the diameter of the inner hole of the bearing 4 is not limited by the diameter of the motor shaft hole 31, a mechanical barrier that the diameter of the inner hole of the bearing 4 is smaller than the diameter of the motor shaft hole 31 is broken through, the size of the bearing 4 is increased, and the radial and axial loads borne by the bearing 4 are increased. And the shaft sleeve 2 can be replaced after being worn to a certain extent, and the shaft sleeve 2 can be replaced by unscrewing the fixed flange 5, so that the cost is much lower than that of replacing the motor shaft 1.
The technical scheme is as follows: the sleeve 2 includes a fitting portion 22 and a fitting portion 23, and a through hole through which the mounting portion 12 passes is formed in the fitting portion 22. The fitting portion 23 is provided with a mounting groove 24 communicating with the through hole, and the fixing flange 5 is positioned in the mounting groove 24 and contacts with the bottom of the mounting groove 24. The outer diameter of the fitting portion 23 is larger than the outer diameter of the fitting portion 22. The bearing 4 is sleeved on the outer wall of the matching part 23. The engaging portion 23 is formed with a collar step 21, the bearing 4 is in contact with the collar step 21, and the collar step 21 positions the mounting of the bearing 4.
The technical scheme is as follows: the bearing also comprises a shell 6, a side cover 7, a tire 8 and a magnetic ring 9, and the bearing 4 is arranged on the side cover 7. The side of the casing 6 is provided with a mounting ring 61, and the tyre 8 is sleeved on the mounting ring 61. The end of the motor shaft 1 passes through the housing 6. The inner wall of the magnetic conduction ring 9 is provided with a plurality of magnetic steels 10. The magnetic ring 9 is sleeved outside the stator 3. The magnetic conductive ring 9 contacts with the inner wall of the mounting ring 61, and the side cover 7 is mounted at the end of the magnetic conductive ring 9.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical schemes which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the technical personnel in the field according to the conception of the utility model are within the protection scope of the utility model.
Claims (7)
1. The utility model provides a split type motor shaft, includes stator (3), motor shaft (1) and bearing (4), system has motor shaft hole (31) on stator (3), its characterized in that still includes axle sleeve (2), the tip of motor shaft (1) passes motor shaft hole (31) and form installation department (12), axle sleeve (2) cover is established and is installed on installation department (12), bearing (4) cover is established on the outer wall of axle sleeve (2).
2. A split motor shaft according to claim 1, further comprising a fixing flange (5), said fixing flange (5) being screw-mounted at an end of said mounting portion (12) for fixing said bushing (2) and said motor shaft (1).
3. The split motor shaft according to claim 2, wherein the shaft sleeve (2) comprises a sleeve portion (22) and a matching portion (23), a through hole for the installation portion (12) to pass through is formed in the sleeve portion (22), an installation groove (24) communicated with the through hole is formed in the matching portion (23), the fixing flange (5) is located in the installation groove (24) and is in contact with the groove bottom of the installation groove (24), and the bearing (4) is sleeved on the outer wall of the matching portion (23).
4. A split motor shaft according to claim 3, characterized in that the outer diameter of the mating portion (23) is larger than the outer diameter of the nesting portion (22).
5. A split motor shaft according to claim 3, characterized in that the mating part (23) is formed with a ring of sleeve steps (21), and the bearing (4) is in contact with the sleeve steps (21).
6. The split motor shaft according to claim 1, characterized in that the motor shaft (1) is provided with positioning steps (11), and the positioning steps (11) and the shaft sleeve (2) are respectively positioned at two sides of the motor shaft hole (31).
7. The split motor shaft according to any one of claims 1-6, further comprising a housing (6), a side cover (7), a tire (8) and a magnetic ring (9), wherein the bearing (4) is mounted on the side cover (7), a mounting ring (61) is arranged on the side surface of the housing (6), the tire (8) is sleeved on the mounting ring (61), the end portion of the motor shaft (1) passes through the housing (6), a plurality of magnetic steels (10) are arranged on the inner wall of the magnetic ring (9), the magnetic ring (9) is sleeved on the outer side of the stator (3), the magnetic ring (9) is in contact with the inner wall of the mounting ring (61), and the side cover (7) is mounted on the end portion of the magnetic ring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322669716.8U CN220874343U (en) | 2023-10-06 | 2023-10-06 | Split motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322669716.8U CN220874343U (en) | 2023-10-06 | 2023-10-06 | Split motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220874343U true CN220874343U (en) | 2024-04-30 |
Family
ID=90813489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322669716.8U Active CN220874343U (en) | 2023-10-06 | 2023-10-06 | Split motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220874343U (en) |
-
2023
- 2023-10-06 CN CN202322669716.8U patent/CN220874343U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |