CN219317614U - Sealing member of electric drive assembly, electric drive assembly and vehicle - Google Patents
Sealing member of electric drive assembly, electric drive assembly and vehicle Download PDFInfo
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- CN219317614U CN219317614U CN202320729338.5U CN202320729338U CN219317614U CN 219317614 U CN219317614 U CN 219317614U CN 202320729338 U CN202320729338 U CN 202320729338U CN 219317614 U CN219317614 U CN 219317614U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model relates to the technical field of sealing structures, in particular to a sealing member of an electric drive assembly, the electric drive assembly and a vehicle, and aims to solve the problem that an existing sealing scheme for an input shaft and an output shaft of the electric drive assembly is not ideal. The sealing member comprises a first cylindrical sealing part and a second cylindrical sealing part, wherein the annular connecting part is used for connecting the first cylindrical sealing part and the second cylindrical sealing part, the first cylindrical sealing part is sleeved on the input shaft and is in sealing fit with the surface of the input shaft, and the second cylindrical sealing part is sleeved on the output shaft and is in sealing fit with the surface of the output shaft. Through the arrangement, the electric drive assembly can be prevented from being increased in size, integrated structural design is facilitated, and in addition, the sealing member provided by the utility model seals the input shaft and the output shaft of the electric drive assembly through the first cylindrical sealing part and the second cylindrical sealing part respectively, so that the sealing effect is better.
Description
Technical Field
The utility model relates to the technical field of sealing structures, and particularly provides a sealing member of an electric drive assembly, the electric drive assembly and a vehicle.
Background
To the electric drive assembly, especially the oily water mixing cooling's structural scheme, the sealed difficult problem that is currently ubiquitous between input shaft and the output shaft, high-speed oil blanket structure is to play the effect of avoiding lubricating oil leakage to the motor side of reduction gear side, in case in the fluid leakage to the motor cavity, can lead to electric drive function to become invalid.
The sealing scheme existing in the current market mainly arranges an oil seal on the inner side of an input shaft and seals an output shaft at the same time, however, the sealing scheme can lead to the bulge of a structure for installing the oil seal, so that the size of an electric drive assembly is increased, and the integrated structural design is not facilitated.
Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the technical problems, namely the problem that the existing sealing scheme for the input shaft and the output shaft of the electric drive assembly is not ideal.
In a first aspect, the present utility model provides a sealing member of an electric drive assembly, the electric drive assembly includes an input shaft and an output shaft, the sealing member includes a first cylindrical sealing portion, a second cylindrical sealing portion, and an annular connecting portion disposed between the first cylindrical sealing portion and the second cylindrical sealing portion, the first cylindrical sealing portion can be sleeved on the input shaft and is in sealing fit with a surface of the input shaft, the second cylindrical sealing portion can be sleeved on the output shaft and is in sealing fit with a surface of the output shaft, an inner diameter of the first cylindrical sealing portion is larger than an outer diameter of the second cylindrical sealing portion, an outer ring surface of the annular connecting portion is in sealing connection with the first cylindrical sealing portion, and an inner ring surface of the annular connecting portion is in sealing connection with the second cylindrical sealing portion.
Compared with the prior art that the oil seal is arranged on the inner side of the input shaft, the sealing component is arranged on the outer side of the input shaft, the size of the electric drive assembly can be prevented from being increased, the integrated structural design is facilitated, in addition, the sealing component is provided with the first cylindrical sealing part and the second cylindrical sealing part, the first cylindrical sealing part and the second cylindrical sealing part respectively seal the input shaft and the output shaft of the electric drive assembly, and the sealing effect is better.
In a preferred technical scheme of the sealing member of the electric drive assembly, the sealing member further comprises a supporting framework, and the supporting framework is arranged inside the first cylindrical sealing part and/or inside the annular connecting part.
By such an arrangement, the rigidity of the seal member can be improved.
In the preferred technical scheme of the sealing member of the electric drive assembly, the supporting framework comprises a cylindrical framework and an annular framework, the cylindrical framework is arranged in the first cylindrical sealing part, the annular framework is arranged in the annular connecting part, and the outer annular surface of the annular framework is fixedly connected with the inner wall of the cylindrical framework or integrally arranged.
In a preferred technical solution of the sealing member of the electric drive assembly, the sealing member further includes a plurality of reinforcing ribs disposed between the first cylindrical sealing portion and the second cylindrical sealing portion, the plurality of reinforcing ribs are distributed at intervals along a circumferential direction of the first cylindrical sealing portion, and two ends of each reinforcing rib are respectively connected with the first cylindrical sealing portion and the second cylindrical sealing portion.
By such arrangement, the strength of the sealing member can be improved, and the service life of the sealing member can be prolonged.
In a preferred embodiment of the sealing member of the electric drive assembly, the first cylindrical sealing portion is fixed relative to the input shaft, and the second cylindrical sealing portion is rotatable relative to the output shaft.
In the preferred technical scheme of the sealing member of the electric drive assembly, the first cylindrical sealing portion is provided with a first limiting structure, and the first limiting structure can be matched with a second limiting structure on the input shaft to prevent the first cylindrical sealing portion from rotating relative to the input shaft.
Through the arrangement, the first cylindrical sealing part can be prevented from rotating relative to the input shaft in the operation process of the electric drive assembly, and the sealing effect of the sealing member is ensured.
In a preferred technical scheme of the sealing member of the electric drive assembly, the first limiting structure is a limiting protrusion formed on an end face of the first cylindrical sealing portion.
In a preferred technical scheme of the sealing member of the electric drive assembly, a plurality of first annular sealing bulges protruding along the radial direction are arranged on the inner wall of the first cylindrical sealing part, and the plurality of first annular sealing bulges are distributed at intervals along the axial direction of the first cylindrical sealing part; and/or a plurality of second annular sealing bulges protruding along the radial direction are arranged on the inner wall of the second cylindrical sealing part, and the second annular sealing bulges are distributed at intervals along the axial direction of the second cylindrical sealing part.
By such arrangement, the sealing path can be extended, and the sealing effect can be improved.
In a second aspect, the present utility model provides an electro-drive assembly comprising a sealing member as described above.
In a third aspect, the present utility model provides a vehicle comprising an electric drive assembly as described above.
Drawings
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:
FIG. 1 is an assembly view of an input shaft, an output shaft and a seal member of the electric drive assembly of the present utility model;
FIG. 2 is a schematic illustration of a seal member of the electro-drive assembly of the present utility model;
FIG. 3 is a schematic diagram of a second embodiment of a sealing member of the electro-drive assembly of the present utility model;
FIG. 4 is a schematic cross-sectional view of a sealing member of the electro-drive assembly of the present utility model.
List of reference numerals:
1. an input shaft; 2. an output shaft; 3. a sealing member; 31. a first cylindrical seal portion; 311. a first annular sealing projection; 312. a first limit structure; 32. a second cylindrical seal portion; 321. a second annular sealing projection; 33. an annular connecting part; 34. a cylindrical skeleton; 35. an annular skeleton; 36. reinforcing ribs.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
For example, although the following description is made in connection with an electric vehicle, the technical solution of the present utility model is equally applicable to other types of vehicles, such as an oil-electric hybrid vehicle, etc., and such adjustments and changes to the application object do not deviate from the principle and scope of the present utility model, and should be limited to the protection scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "inner", "outer", "upper", "lower", "left", "right", and the like, which indicate directions or positional relationships are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Specifically, the present utility model provides an electric vehicle including an electric drive assembly, as shown in fig. 1, including an input shaft 1, an output shaft 2, and a sealing member 3 mounted between the input shaft 1 and the output shaft 2, by which sealing member 3 a gap between the input shaft 1 and the output shaft 2 can be sealed to prevent lubricating oil on a speed reducer side from leaking to a motor side.
As shown in fig. 1 to 3, the seal member 3 of the present utility model includes a first cylindrical seal portion 31, a second cylindrical seal portion 32, and an annular connecting portion 33 provided between the first cylindrical seal portion 31 and the second cylindrical seal portion 32.
The first cylindrical sealing portion 31 can be sleeved on the input shaft 1, the inner wall of the first cylindrical sealing portion 31 is in sealing fit with the surface of the input shaft 1, the second cylindrical sealing portion 32 can be sleeved on the output shaft 2, the inner wall of the second cylindrical sealing portion 32 is in sealing fit with the surface of the output shaft 2, the inner diameter of the first cylindrical sealing portion 31 is larger than the outer diameter of the second cylindrical sealing portion 32, the outer ring surface of the annular connecting portion 33 is in sealing connection with the first cylindrical sealing portion 31, and the inner ring surface of the annular connecting portion 33 is in sealing connection with the second cylindrical sealing portion 32.
Compared with the prior art that the oil seal is arranged on the inner side of the input shaft 1, the sealing member 3 is arranged on the outer side of the input shaft 1, so that the increase of the size of the electric drive assembly can be avoided, the integrated structural design is facilitated, and in addition, the sealing member 3 is provided with two cylindrical sealing parts (a first cylindrical sealing part 31 and a second cylindrical sealing part 32) which respectively seal the input shaft 1 and the output shaft 2 of the electric drive assembly, and the sealing effect is better.
Among them, the interference fit is preferably adopted between the first cylindrical seal portion 31 and the input shaft 1 and between the second cylindrical seal portion 32 and the output shaft 2.
Illustratively, the first cylindrical sealing portion 31 and the second cylindrical sealing portion 32 have an overlapping portion in the axial direction, wherein a left end face of the second cylindrical sealing portion 32 protrudes from a left end face of the first cylindrical sealing portion 31, a right end face of the second cylindrical sealing portion 32 is located between the left end face and the right end face of the first cylindrical structure, and an inner annular face of the annular connecting portion 33 is connected with the right end face of the second cylindrical sealing portion 32.
The first cylindrical seal portion 31, the second cylindrical seal portion 32, and the annular connecting portion 33 are preferably integrally provided.
In addition, it should be noted that, in practical applications, the person skilled in the art may fixedly mount the sealing member 3 on the input shaft 1, that is, relatively fix the first cylindrical sealing portion 31 and the input shaft 1, and enable the second cylindrical sealing portion 32 to rotate relative to the output shaft 2, during the operation of the electric drive assembly, the first cylindrical sealing portion 31 rotates synchronously with the input shaft 1, and because of the rotational speed difference between the input shaft 1 and the output shaft 2, the second cylindrical sealing portion 32 can rotate relative to the output shaft 2, or may fixedly mount the sealing member 3 on the output shaft 2, that is, relatively fix the second cylindrical sealing portion 32 and the output shaft 2, and enable the first cylindrical sealing portion 31 to rotate relative to the input shaft 1, and during the operation of the electric drive assembly, the second cylindrical sealing portion 32 rotates synchronously with the output shaft 2, and the first cylindrical sealing portion 31 can rotate relative to the input shaft 1, which is flexibly adjusted and changed without departing from the principle and scope of the present utility model, which should be limited to the scope of protection of the present utility model.
Preferably, the first cylindrical seal 31 is fixed relative to the input shaft 1, and the second cylindrical seal 32 is rotatable relative to the output shaft 2.
That is, the seal member 3 of the present utility model is preferably fixedly mounted on the input shaft 1.
Preferably, as shown in fig. 1 and 3, the first cylindrical sealing portion 31 is provided with a first limiting structure 312, and the first limiting structure 312 can cooperate with a second limiting structure (not shown in the drawings) on the input shaft 1 to prevent the first cylindrical sealing portion 31 from rotating relative to the input shaft 1.
By arranging the first limiting structure 312 and the second limiting structure which are matched with each other on the first cylindrical sealing portion 31 and the input shaft 1 respectively, the first cylindrical sealing portion 31 can be prevented from rotating relative to the input shaft 1 in the operation process of the electric drive assembly, and the sealing effect of the sealing member 3 is ensured.
It should be noted that, in practical applications, those skilled in the art may set the first limiting structure 312 and the second limiting structure to be a structure in which the limiting protrusion is matched with the limiting groove, or may set the first limiting structure 312 and the second limiting structure to be a structure in which the limiting post is matched with the limiting hole, etc., and such adjustment and modification of the specific structural forms of the first limiting structure 312 and the second limiting structure do not deviate from the principle and scope of the present utility model, and should be limited in the scope of protection of the present utility model.
Preferably, as shown in fig. 1 and 3, the first limiting structure 312 is a limiting protrusion formed on an end surface of the first cylindrical sealing portion 31, and the second limiting structure is a limiting groove formed on the input shaft 1, and the limiting protrusion is adapted to the limiting groove.
Preferably, as shown in fig. 3, a plurality of first annular seal projections 311 protruding in the radial direction are provided on the inner wall of the first cylindrical seal portion 31, the plurality of first annular seal projections 311 being distributed at intervals in the axial direction of the first cylindrical seal portion 31.
By providing the inner wall of the first cylindrical seal portion 31 with the plurality of first annular seal projections 311 axially spaced apart, the seal path can be lengthened and the seal effect can be improved.
Preferably, as shown in fig. 2, a plurality of second annular sealing protrusions 321 protruding in the radial direction are provided on the inner wall of the second cylindrical sealing portion 32, and the plurality of second annular sealing protrusions 321 are spaced apart in the axial direction of the second cylindrical sealing portion 32.
By providing the inner wall of the second cylindrical seal portion 32 with a plurality of second annular seal projections 321 which are axially spaced apart, the seal path can be lengthened and the seal effect can be improved.
Preferably, as shown in fig. 4, the sealing member 3 of the present utility model further includes a supporting skeleton provided inside the first cylindrical sealing portion 31 and/or inside the annular connecting portion 33.
By providing a supporting skeleton inside the first cylindrical seal portion 31 and/or inside the annular connecting portion 33, the rigidity of the seal member 3 can be improved.
Preferably, as shown in fig. 4, the supporting frame includes a cylindrical frame 34 and an annular frame 35, the cylindrical frame 34 is disposed inside the first cylindrical sealing portion 31, the annular frame 35 is disposed inside the annular connecting portion 33, and an outer annular surface of the annular frame 35 is fixedly connected or integrally disposed with an inner wall of the cylindrical frame 34.
Wherein, the first cylindrical sealing portion 31, the second cylindrical sealing portion 32 and the annular connecting portion 33 are all made of rubber materials, the cylindrical skeleton 34 and the annular skeleton 35 are made of hard materials such as metal or plastic, the first cylindrical sealing portion 31 completely wraps the cylindrical skeleton 34, and the annular connecting portion 33 completely wraps the annular skeleton 35.
Preferably, as shown in fig. 2, the sealing member 3 of the present utility model further includes a plurality of reinforcing ribs 36 provided between the first cylindrical sealing portion 31 and the second cylindrical sealing portion 32, the plurality of reinforcing ribs 36 being distributed at intervals along the circumferential direction of the first cylindrical sealing portion 31 and both ends of each reinforcing rib 36 being connected to the first cylindrical sealing portion 31 and the second cylindrical sealing portion 32, respectively.
By providing the plurality of reinforcing ribs 36 between the first cylindrical seal portion 31 and the second cylindrical seal portion 32, the strength of the seal member 3 can be improved, and the service life of the seal member 3 can be prolonged.
Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (10)
1. A sealing member of an electric drive assembly, said electric drive assembly comprising an input shaft and an output shaft, characterized in that,
the sealing member includes a first cylindrical sealing portion, a second cylindrical sealing portion, and an annular connecting portion provided between the first cylindrical sealing portion and the second cylindrical sealing portion,
the first cylindrical sealing part can be sleeved on the input shaft and is in sealing fit with the surface of the input shaft, the second cylindrical sealing part can be sleeved on the output shaft and is in sealing fit with the surface of the output shaft, the inner diameter of the first cylindrical sealing part is larger than the outer diameter of the second cylindrical sealing part, the outer ring surface of the annular connecting part is in sealing connection with the first cylindrical sealing part, and the inner ring surface of the annular connecting part is in sealing connection with the second cylindrical sealing part.
2. The seal member of an electric drive assembly of claim 1, further comprising a support skeleton disposed inside the first cylindrical seal portion and/or inside the annular connection portion.
3. The sealing member of an electric drive assembly according to claim 2, wherein the supporting skeleton comprises a cylindrical skeleton and an annular skeleton, the cylindrical skeleton is disposed inside the first cylindrical sealing portion, the annular skeleton is disposed inside the annular connecting portion, and an outer annular surface of the annular skeleton is fixedly connected with or integrally disposed with an inner wall of the cylindrical skeleton.
4. The seal member of an electric drive assembly of claim 1, further comprising a plurality of reinforcing ribs disposed between the first and second cylindrical seal portions, the plurality of reinforcing ribs being spaced apart along a circumferential direction of the first cylindrical seal portion and each of the reinforcing ribs having opposite ends connected to the first and second cylindrical seal portions, respectively.
5. The seal member of an electric drive assembly of claim 1, wherein the first cylindrical seal portion is fixed relative to the input shaft and the second cylindrical seal portion is rotatable relative to the output shaft.
6. The seal member of an electric drive assembly of claim 5, wherein the first cylindrical seal portion is provided with a first limit feature that is capable of cooperating with a second limit feature on the input shaft to prevent rotation of the first cylindrical seal portion relative to the input shaft.
7. The seal member of an electric drive assembly of claim 6, wherein the first limit feature is a limit projection formed on an end face of the first cylindrical seal portion.
8. The seal member of an electric drive assembly according to any one of claims 1 to 7, wherein a plurality of first annular seal projections protruding in a radial direction are provided on an inner wall of the first cylindrical seal portion, the plurality of first annular seal projections being distributed at intervals in an axial direction of the first cylindrical seal portion; and/or
A plurality of second annular sealing bulges protruding along the radial direction are arranged on the inner wall of the second cylindrical sealing part, and the second annular sealing bulges are distributed at intervals along the axial direction of the second cylindrical sealing part.
9. An electro-mechanical assembly comprising a sealing member according to any one of claims 1 to 8.
10. A vehicle comprising the electric drive assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729338.5U CN219317614U (en) | 2023-03-31 | 2023-03-31 | Sealing member of electric drive assembly, electric drive assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729338.5U CN219317614U (en) | 2023-03-31 | 2023-03-31 | Sealing member of electric drive assembly, electric drive assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219317614U true CN219317614U (en) | 2023-07-07 |
Family
ID=87021897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320729338.5U Active CN219317614U (en) | 2023-03-31 | 2023-03-31 | Sealing member of electric drive assembly, electric drive assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219317614U (en) |
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2023
- 2023-03-31 CN CN202320729338.5U patent/CN219317614U/en active Active
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