CN212392763U - Supporting structure of high-speed central shaft for motor or speed reducer - Google Patents
Supporting structure of high-speed central shaft for motor or speed reducer Download PDFInfo
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- CN212392763U CN212392763U CN202022147467.2U CN202022147467U CN212392763U CN 212392763 U CN212392763 U CN 212392763U CN 202022147467 U CN202022147467 U CN 202022147467U CN 212392763 U CN212392763 U CN 212392763U
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Abstract
This patent provides a motor or for speed reducer high speed center pin's bearing structure, its central axis can rotate at a high speed, is particularly useful for the support of high-speed major diameter center pin. The device comprises a supporting body and a central shaft, wherein at least three rotating bodies are arranged in the circumferential direction of the central shaft; the rotor sets up on supporting the body around self axis rotation ground, and the rotor is tangent with the periphery of center pin directly or indirectly, or the rotor sets up on the center pin around self axis rotation ground, and the rotor is tangent with the periphery of supporting the body directly or indirectly.
Description
Technical Field
The present invention relates to a center shaft support structure suitable for high-speed rotation, such as a center shaft support structure of a high-speed motor and a center shaft support structure of a speed reducer.
Background
Along with the popularization of the motor in the new energy vehicle, the high speed of the motor becomes a development trend in order to reduce the cost of the motor, and meanwhile, the coaxial bridge structure scheme with the motor shaft coaxial with the wheels has the characteristics of small volume, light weight and low cost, and becomes a development direction of a vehicle electric drive system. However, since the half shaft for connecting the wheel needs to pass through the axis of the motor, the outer diameter of the motor center shaft is large, the diameter of a bearing for correspondingly supporting the motor center shaft is large, but the rotating speed of the large-diameter bearing is low, and the requirement of the motor for high rotating speed cannot be met, which limits the application range of the coaxial bridge and causes difficulty in popularization, so that a supporting structure capable of meeting the requirement of the large-diameter high-rotating-speed motor center shaft is needed, and a foundation is provided for popularization of the coaxial bridge.
Disclosure of Invention
The purpose of this patent is to provide a motor or support structure of high-speed center pin for reduction gear, its central axis can rotate at a high speed, is particularly useful for the support of high-speed major diameter center pin.
In order to achieve the above purpose, the supporting structure of the high-speed central shaft for the motor or the speed reducer comprises a supporting body and a central shaft, wherein at least three rotating bodies are arranged in the circumferential direction of the central shaft; the rotor is rotationally arranged on the supporting body around the axis of the rotor, and the rotor is directly or indirectly tangent to the periphery of the central shaft.
In the supporting structure, the rotor is indirectly tangent to the periphery of the central shaft, namely, the central shaft is arranged on a shaft sleeve, and the rotor is tangent to the periphery of the shaft sleeve.
In the support structure, the rotating body is the outer ring of the bearing, and the bearing is arranged on the support shaft fixed on the support body.
In the support structure, the rotating body is an annular member sleeved on the outer ring of the bearing, and the bearing is arranged on the support shaft fixed on the support body.
In the supporting structure, the rotating body is fixed on the supporting shaft, and the supporting shaft is rotatably arranged on the supporting body through the bearing.
In the supporting structure, the tangent plane of the rotor, which is directly or indirectly tangent to the periphery of the central shaft, is a cylindrical surface, a conical surface, a V-shaped surface or an arc surface.
In the supporting structure, the rotating bodies are uniformly distributed on the same circumference.
The patent simultaneously provides another kind of motor or for the speed reducer bearing structure of high-speed center shaft that belongs to same idea with foretell technical scheme, and its central axis can rotate at a high speed, is particularly useful for the support of high-speed major diameter center shaft.
A supporting structure of a high-speed central shaft for a motor or a speed reducer comprises a supporting body and the central shaft, wherein at least three rotating bodies are arranged in the circumferential direction of the central shaft; the rotor is rotationally arranged on the central shaft around the axis of the rotor, and the rotor is directly or indirectly tangent with the periphery of the support body.
As an improvement, in the supporting structure, the rotor is indirectly tangent to the outer periphery of the supporting body, which means that the rotor is tangent to the outer periphery of the sleeve fixed on the supporting body.
As an improvement, the support structure is characterized in that the rotor is an outer ring of a bearing, and the bearing is arranged on a support shaft fixed on the central shaft. Of course, the support shaft may be directly fixed to the center shaft or indirectly fixed to the center shaft, for example, the support shaft is fixed to a support shaft connector such as a ring plate, and the support shaft connector is fixed to the center shaft.
As an improvement, the support structure is characterized in that the rotor is an annular member sleeved on an outer ring of the bearing, and the bearing is arranged on a support shaft fixed on the central shaft. Of course, the support shaft may be directly fixed to the center shaft or indirectly fixed to the center shaft, for example, the support shaft is fixed to a support shaft connector such as a ring plate, and the support shaft connector is fixed to the center shaft.
As a modification, the support structure is characterized in that the rotor is fixed on a support shaft, and the support shaft is rotatably arranged on the central shaft through a bearing.
As an improvement, the tangent surface of the rotor, which is directly or indirectly tangent to the periphery of the support body, of the support structure is a cylindrical surface, a conical surface, a V-shaped surface or an arc surface.
As an improvement, the supporting structure has the rotating bodies uniformly distributed on the same circumference.
In the two support structures which belong to the same inventive concept and are mentioned in the patent, a central shaft can rotate, and a support body is fixed; or the central shaft can be fixed to support the body to rotate; it is also possible that both the central shaft and the support body rotate, but at different speeds.
This patent provides a high-speed motor that can be suitable for high-speed rotation simultaneously.
The high-speed motor comprises a stator, a rotor, a support body and a central shaft, wherein the rotor is arranged on the central shaft, and the high-speed motor is provided with a support structure of the high-speed central shaft for the motor or the speed reducer.
The beneficial effect of this patent: when the central shaft rotates, the rotating body is always tangent to the central shaft, and the central shaft is radially positioned. Since the rotating body is located in the circumferential direction of the central shaft, the outer diameter of the rotating body is small, so that the rotating body can be rotatably disposed on the support body by means of a small bearing having a small outer diameter. The central shaft can rotate at high speed due to the high rotational speed of the smaller bearings. And the rotational speed of the rotor can be varied by varying the ratio of the outer diameter of the rotor to the diameter of the central axis tangent to the rotor. The supporting structure improves the high-speed rotation stability and the possibility of the large-diameter central shaft with larger outer diameter, so that the application obstacles of the motor with the large-diameter central shaft can be eliminated easily, and therefore, the innovation can promote the wide application of the vehicle coaxial bridge structure and has high application value.
Drawings
FIG. 1 is a schematic view of a high-speed motor of embodiment 1;
fig. 2 is a schematic view showing relative positional relationships of the rotating body, the center shaft, and the like in fig. 1;
FIG. 3 is a schematic view of a high-speed motor of embodiment 2;
FIG. 4 is a schematic view of a high-speed motor of embodiment 3;
FIG. 5 is a schematic view of a high-speed motor of embodiment 4;
FIG. 6 is a schematic view of a high-speed motor of embodiment 5;
FIG. 7 is a schematic view of a high-speed motor of embodiment 6;
FIG. 8 is a schematic view of a high-speed motor of embodiment 7;
FIG. 9 is a schematic view of a high-speed motor of embodiment 8;
fig. 10 is a schematic view of a high-speed motor of embodiment 9.
In the figure, a stator 1, a rotor 2, a central shaft 3, an end cover 4, a rotor 5, a support shaft 6, a support shaft connector 61, a bearing 7, a second bearing 72, a shaft sleeve 8, a transition support member 82, a shell 9 and a support body 10.
Detailed Description
Example 1:
referring to the high speed motor shown in fig. 1, a stator 1 is fixed on a housing 9, a rotor 2 located inside the stator is arranged on a hollow large diameter central shaft 3, two end covers 4 are respectively arranged at two ends of the housing, and the end covers 4 or the end covers 4 and the housing 9 are supporting bodies 10. The end cap 4 supports the central shaft 3 by means of the following support structure: at least three rotating bodies 5 (see figure 2) are uniformly distributed in the circumferential direction of the central shaft, a bearing 7 is arranged on a supporting shaft 6 fixed on an end cover, the rotating bodies 5 are annular cylinders sleeved on the outer rings of the bearing 7, the rotating bodies 5 are directly tangent to the periphery of the central shaft 3, and the tangent plane is a cylindrical surface.
Example 2:
referring to fig. 3, a high-speed motor (refer to fig. 1 and 2) is different from embodiment 1 mainly in that in a supporting structure, a rotating body 5 is an annular double cone sleeved on an outer ring of a bearing 7, the rotating body 5 is directly tangent to an outer periphery of a central shaft 3, and a tangent plane is a V-shaped surface.
Example 3:
referring to fig. 4, a high-speed motor (refer to fig. 1 and 2) is different from embodiment 1 mainly in that in a supporting structure, a rotating body 5 is an annular cone sleeved on an outer ring of a bearing 7, the rotating body 5 is directly tangent to an outer periphery of a central shaft 3, and a tangent plane is a conical surface.
Example 4:
referring to fig. 5, a high-speed motor (refer to fig. 1 and 2) is different from embodiment 1 mainly in that in a supporting structure, a rotating body 5 is an annular cambered surface body sleeved on an outer ring of a bearing 7, the rotating body 5 is directly tangent to an outer periphery of a central shaft 3, and a tangent plane is a cambered surface.
Example 5:
referring to fig. 6, a high-speed motor (refer to fig. 1) is different from embodiment 1 mainly in that in the supporting structure, the rotor 5 is the outer ring of the bearing 7, and the outer ring of the bearing 7 is directly tangent to the outer periphery of the central shaft 3.
Example 6:
referring to fig. 7, a high-speed motor (refer to fig. 1) is different from embodiment 1 mainly in that, in a supporting structure, a rotor 5 is an outer ring of a bearing 7, two ends of a central shaft 3 are respectively connected with a shaft sleeve 8, and the outer ring of the bearing 7 is tangent to the outer periphery of the shaft sleeve 8 (the rotor is indirectly tangent to the outer periphery of the central shaft).
Example 7:
referring to fig. 8, a high-speed motor (refer to fig. 1) is different from embodiment 1 mainly in that its supporting structure is that a rotor 5 is fixed on a supporting shaft 6 (of course, the rotor 5 and the supporting shaft 6 may be integrated), and the supporting shaft 6 is rotatably disposed on an end cover through at least one second bearing 72. The rotor 5 is directly tangent to the outer circumference of the central shaft 3.
Example 8:
referring to fig. 9, a high-speed motor (see fig. 1) is different from embodiment 1 mainly in that a support structure thereof is provided, in which transition support members 82 are connected to both ends of a central shaft 3, respectively, and a rotor 5 is tangent to the outer peripheries of the transition support members 82 (the rotor is indirectly tangent to the outer periphery of the central shaft).
Example 9:
referring to the high-speed motor shown in fig. 10, a stator 1 is fixed on a housing 9, a rotor 2 inside the stator is arranged on a hollow large-diameter central shaft 3, two ends of the housing are respectively provided with an end cover 4, and a support body 10 supports the central shaft 3 through the following support structures: at least three rotors 5 are uniformly distributed in the circumferential direction of the central shaft, the annular support shaft connecting piece 61 is fixed on the central shaft 3, the support shaft 6 is fixed on the support shaft connecting piece 61, the bearing 7 is arranged on the support shaft 6, the rotors 5 are annular cylinders sleeved on the outer ring of the bearing 7, and the rotors 5 are tangent to the support body 10 passing through the end cover 4. The tangent plane is a cylindrical surface.
The support body 10 may be fixed to or integrally connected with the end cap 4 (in this case, the support body is a fixed member such as an end cap or a housing), or may be a member separated from the end cap 4 and rotating relative to the end cap 4. Of course, the central shaft 3 is rotated with respect to the support body 10, irrespective of whether the support body 10 is rotated or not.
In the above embodiments, the supporting structure of the large-diameter motor central shaft takes the motor central shaft as a center, and at least three rotating bodies for directly or indirectly supporting the motor central shaft are arranged along the circumferential direction, and the outer diameters of the rotating bodies are directly or indirectly tangent to the outer diameter of the motor central shaft. The rotor is rotatably disposed on the support body or the central shaft about its own axis.
The rotating body can be a bearing outer ring.
The rotating body can also be a bearing outer ring and a circular component sleeved on the bearing outer ring.
The rotating body can also be a component which is supported on the inner ring of the bearing and has the outer diameter which is directly or indirectly tangent with the central shaft of the motor (as in embodiment 7).
The central shaft of the motor can be directly tangent to the rotor, or indirectly tangent to the rotor through a transition support member, a shaft sleeve and the like sleeved on the central shaft (such as embodiments 6 and 8).
The rotating body is arranged on the bearing, can be arranged on the outer ring of the bearing or can be arranged on the inner ring of the bearing, and the number of the bearings can be one or more.
The tangent plane of the rotating body and the central shaft can be a cylindrical surface, a conical surface, a V-shaped surface, an arc surface and any other surface which can be relatively tangent, and can also be a combination of the surfaces.
The rotor may also support a transition support member attached to the motor shaft, the motor shaft being attached to the transition support member, the motor shaft being indirectly positioned via the transition support member (as in example 8).
The supporting structure of the high-speed central shaft for the motor or the speed reducer is also suitable for supporting the components which need large-diameter support and rotate at high speed in the speed reducer.
What this patent innovation lies in, through tangent structure support center pin, use less bearing to support the rotor, because less bearing has very high rotational speed, can change the rotational speed of rotor moreover through the proportion of the tangent diameter with the rotor on changing rotor external diameter and the center pin, make the application obstacle of the motor of major diameter center pin gently get rid of.
The bearing for supporting the rotating body may be any rolling bearing, sliding bearing, or the like, and may be one or a plurality of.
The rotor has at least one outer circular surface which is directly or indirectly tangent with the central shaft.
The structure of the supporting shaft does not affect the protection scope of the claims of the patent;
the central position of the rotating body can be fixed or adjustable, which does not affect the protection scope of the patent claims;
the specific structure of the motor and the form of the motor do not affect the protection scope of the patent claims.
Claims (10)
1. Motor or reduction gear are with bearing structure of high-speed center axle, including supporting body, center pin, characterized by: at least three rotating bodies are arranged in the circumferential direction of the central shaft; the rotor is rotationally arranged on the supporting body around the axis of the rotor, and the rotor is directly or indirectly tangent to the periphery of the central shaft.
2. The support structure of claim 1, wherein: the indirect tangency of the rotating body and the periphery of the central shaft means that the central shaft is arranged on a shaft sleeve, and the rotating body is tangent to the periphery of the shaft sleeve.
3. A support structure as claimed in claim 1 or 2, wherein: the rotor is the outer lane of bearing, and the bearing setting is on being fixed in the back shaft that supports on the body.
4. A support structure as claimed in claim 1 or 2, wherein: the rotor is the annular member of suit on the bearing outer lane, and the bearing setting is on being fixed in the back shaft on supporting the body.
5. A support structure as claimed in claim 1 or 2, wherein: the rotor is fixed on the back shaft, and the back shaft passes through the bearing and rotates the setting on supporting the body.
6. Motor or reduction gear are with bearing structure of high-speed center axle, including supporting body, center pin, characterized by: at least three rotating bodies are arranged in the circumferential direction of the central shaft; the rotor is rotationally arranged on the central shaft around the axis of the rotor, and the rotor is directly or indirectly tangent with the periphery of the support body.
7. The support structure of claim 6, wherein: the indirect tangency of the rotating body and the periphery of the supporting body means that the rotating body is tangent with the periphery of the shaft sleeve fixed on the supporting body.
8. A support structure as claimed in claim 6 or 7, wherein: the rotor is the outer lane of bearing, and the bearing setting is on being fixed in the back shaft on the center pin.
9. A support structure as claimed in claim 6 or 7, wherein: the rotor is an annular component sleeved on the outer ring of the bearing, and the bearing is arranged on a supporting shaft fixed on the central shaft.
10. A support structure as claimed in claim 6 or 7, wherein: the rotor is fixed on the back shaft, and the back shaft passes through the bearing and rotates the setting on the center pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022147467.2U CN212392763U (en) | 2020-09-26 | 2020-09-26 | Supporting structure of high-speed central shaft for motor or speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022147467.2U CN212392763U (en) | 2020-09-26 | 2020-09-26 | Supporting structure of high-speed central shaft for motor or speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212392763U true CN212392763U (en) | 2021-01-22 |
Family
ID=74254217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022147467.2U Active CN212392763U (en) | 2020-09-26 | 2020-09-26 | Supporting structure of high-speed central shaft for motor or speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212392763U (en) |
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2020
- 2020-09-26 CN CN202022147467.2U patent/CN212392763U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000 No.2 Huxiao Road, Chunhua street, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Fuli Heavy Industry Co.,Ltd. Address before: 210000 No.2 Huxiao Road, Chunhua street, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING HAOLONG ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |