CN211852796U - Sealing structure of non-oil-cooled power motor for new energy automobile - Google Patents
Sealing structure of non-oil-cooled power motor for new energy automobile Download PDFInfo
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- CN211852796U CN211852796U CN201922433054.8U CN201922433054U CN211852796U CN 211852796 U CN211852796 U CN 211852796U CN 201922433054 U CN201922433054 U CN 201922433054U CN 211852796 U CN211852796 U CN 211852796U
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Abstract
The utility model provides a new energy automobile is with cold power motor's of non-oil seal structure, it is through carrying out reliable oil lubrication to the motor oil blanket, has realized effectively guaranteeing power motor's leakproofness to the promotion of power motor oil blanket reliability. The motor end cover is provided with an outer side thickening protrusion corresponding to the penetrating position of a motor shaft, an installation through hole is formed in the thickness direction of the outer side thickening protrusion, the diameter of the installation through hole is larger than the outer diameter of the penetrating position of the motor shaft, an inner side oil seal and an outer side oil seal are respectively arranged on two sides of the thickness direction of the installation through hole, inner rings of the inner side oil seal and the outer side oil seal are respectively fixedly sleeved on outer ring surfaces of the corresponding positions of the motor shaft, outer rings of the inner side oil seal and the outer side oil seal are respectively tightly attached to ring walls of the corresponding sides of the installation through hole, and an installation interval is reserved between.
Description
Technical Field
The utility model relates to a technical field that the motor is sealed specifically is a new energy automobile is with non-oil cooling motor power's seal structure.
Background
The protection level of the power motor for the new energy automobile is higher and higher, and the motor must be kept in a sealing state for a long time to ensure the safety and reliability of the power motor; at present, a single oil seal or double oil seals are mostly used for sealing on a motor for new energy, but in the actual operation process, grease lubrication is mostly adopted for oil seals of non-oil lubrication motors or the oil seals are provided with lubricating coatings, and because the rotating speed of a power motor is very high, the friction heat at the contact position of the oil seals and a motor shaft cannot be effectively taken away, so that the shaft surface is easy to be bluish and ablated, the lip of the oil seal is ablated, the oil seal is invalid, the motor sealing is invalid, and further the water inlet of the power motor is invalid; meanwhile, due to high heat productivity of friction between the shaft and the oil seal, grease lubrication at the lip part of the oil seal cannot be kept effective for a long time.
Disclosure of Invention
To the above problem, the utility model provides a new energy automobile is with cold power motor's of non-oil seal structure, it is through carrying out lasting reliable oil lubrication to the motor oil blanket, has realized effectively guaranteeing power motor's leakproofness to the promotion of power motor oil blanket reliability.
The utility model provides a new energy automobile is with seal structure of non-oil cooling power motor which characterized in that: the motor comprises a motor shaft and a motor end cover, wherein an outer side thickening bulge is arranged at the position, corresponding to the penetration position of the motor shaft, of the motor end cover, a mounting penetration hole is formed in the thickness direction of the outer side thickening bulge, the diameter of the mounting penetration hole is larger than the outer diameter of the penetration position of the motor shaft, an inner side oil seal and an outer side oil seal are respectively arranged at two sides of the thickness direction of the mounting penetration hole, inner rings of the inner side oil seal and the outer side oil seal are respectively fixedly sleeved on outer ring surfaces of the corresponding positions of the motor shaft, outer rings of the inner side oil seal and the outer side oil seal are respectively clung to ring walls of the corresponding sides of the mounting penetration hole, a mounting interval is reserved between the inner side oil seal and the outer side oil seal, a storage cavity for lubricating oil is formed by the motor shaft, the motor end cover, the inner side, a vent plug is inserted in the vent hole.
It is further characterized in that: the vent plug is positioned in the area of the installation interval, so that the functions of an inner side oil seal and an outer side oil seal are ensured not to be interfered;
the lips of the inner side oil seal and the outer side oil seal are oppositely arranged, so that the effective lubrication of the lips is ensured;
the outer side thickened and raised peripheral ring surface is an arc transition ring surface, so that connected parts are not damaged.
After the technical scheme is adopted, when the motor shaft rotates, the lubricating oil can be stirred to splash to each area of the storage cavity, the lubricating oil can keep effective lubrication on the contact position of the oil seal and the motor shaft, the service life of the oil seal is prolonged, and the sealing performance of the motor is guaranteed; when the motor shaft rotates, the motor shaft can rub with the oil seal to generate heat, and the design of the vent plug can ensure that the oil temperature change can not cause adverse effect on a sealing system at the position; the motor oil seal is continuously and reliably lubricated by oil, so that the reliability of the power motor oil seal is improved, and the tightness of the power motor can be effectively guaranteed.
Drawings
Fig. 1 is a schematic view of the front view of the present invention in a partial sectional structure;
FIG. 2 is a schematic view of section A-A of FIG. 1;
the names corresponding to the sequence numbers in the figure are as follows:
the motor comprises a motor shaft 1, a motor end cover 2, an outer side thickening bulge 3, an arc transition ring surface 31, a mounting through hole 4, an inner side oil seal 5, an outer side oil seal 6, a mounting interval 7, a storage cavity 8, lubricating oil 9, an air vent 10 and an air vent plug 11.
Detailed Description
A sealing structure of a non-oil-cooling power motor for a new energy automobile is shown in figures 1 and 2: the motor end cover comprises a motor shaft 1 and a motor end cover 2, wherein an outer side thickening bulge 3 is arranged at a penetrating position of the motor shaft 1 on the motor end cover 2, a mounting through hole 4 is arranged in the thickness direction of the outer side thickening bulge 3, the diameter of the mounting through hole 4 is larger than the outer diameter of the penetrating position of the motor shaft 1, an inner side oil seal 5 and an outer side oil seal 6 are respectively arranged at two sides of the thickness direction of the mounting through hole 4, inner rings of the inner side oil seal 5 and the outer side oil seal 6 are respectively fixedly sleeved on outer ring surfaces of corresponding positions of the motor shaft 1, outer rings of the inner side oil seal 5 and the outer side oil seal 6 are respectively tightly attached to ring walls of corresponding sides of the mounting through hole 4, a mounting interval 7 is reserved between the inner side oil seal 5 and the outer side oil seal 6, a storage cavity 8 for lubricating oil is formed by the motor shaft 1, the motor end cover 2, the inner, a vent plug 11 is inserted into the vent hole 10.
The vent plug 11 is located in the region of the mounting space 7, ensuring that the function of the inner and outer oil seals 5, 6 is not interfered with;
the lips of the inner side oil seal 5 and the outer side oil seal 6 are arranged oppositely, so that the effective lubrication of the lips is ensured;
the peripheral ring surface of the outer thickening bulge 3 is an arc transition ring surface 31, so that connected parts can not be damaged.
The specific working logic is as follows:
when the motor rotates, the motor shaft stirs lubricating oil so that the lubricating oil splashes to all corners of a storage cavity formed by the motor shaft, the motor end cover, the inner side oil seal and the outer side oil seal; the oil seal lips are installed in opposite directions, and the lubricating oil can ensure the effective lubrication of the lips; the vent plug is arranged on the whole storage cavity of the lubricating oil, so that the balance between the whole storage space and the external atmospheric pressure is ensured, and the condition that the air pressure of the cavity is increased due to high temperature or is reduced due to low temperature to cause abnormal oil seal is prevented; the lubricating oil cavity formed by the motor shaft, the motor end cover and the inner and outer side oil seals can be subjected to air tightness test to ensure the sealing property of the whole cavity;
different automobile power motor can be according to the rotational speed and the operating mode demand of difference, can adjust the size and the oil mass of the reservoir chamber of lubricating oil, and reasonable cavity setting and oil mass setting can satisfy different power motor's the lubricated demand of oil blanket, realize the promotion to power motor sealing reliability.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a new energy automobile is with seal structure of non-oil cooling power motor which characterized in that: the motor comprises a motor shaft and a motor end cover, wherein an outer side thickening bulge is arranged at the position, corresponding to the penetration position of the motor shaft, of the motor end cover, a mounting penetration hole is formed in the thickness direction of the outer side thickening bulge, the diameter of the mounting penetration hole is larger than the outer diameter of the penetration position of the motor shaft, an inner side oil seal and an outer side oil seal are respectively arranged at two sides of the thickness direction of the mounting penetration hole, inner rings of the inner side oil seal and the outer side oil seal are respectively fixedly sleeved on outer ring surfaces of the corresponding positions of the motor shaft, outer rings of the inner side oil seal and the outer side oil seal are respectively clung to ring walls of the corresponding sides of the mounting penetration hole, a mounting interval is reserved between the inner side oil seal and the outer side oil seal, a storage cavity for lubricating oil is formed by the motor shaft, the motor end cover, the inner side, a vent plug is inserted in the vent hole.
2. The sealing structure of the non-oil-cooled power motor for the new energy automobile according to claim 1, characterized in that: the vent plug is located in the region of the mounting gap.
3. The sealing structure of the non-oil-cooled power motor for the new energy automobile according to claim 1, characterized in that: the lips of the inner side oil seal and the outer side oil seal are oppositely arranged.
4. The sealing structure of the non-oil-cooled power motor for the new energy automobile according to claim 1, characterized in that: the peripheral ring surface of the outer side thickening bulge is an arc transition ring surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433054.8U CN211852796U (en) | 2019-12-30 | 2019-12-30 | Sealing structure of non-oil-cooled power motor for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433054.8U CN211852796U (en) | 2019-12-30 | 2019-12-30 | Sealing structure of non-oil-cooled power motor for new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852796U true CN211852796U (en) | 2020-11-03 |
Family
ID=73208362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922433054.8U Active CN211852796U (en) | 2019-12-30 | 2019-12-30 | Sealing structure of non-oil-cooled power motor for new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852796U (en) |
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2019
- 2019-12-30 CN CN201922433054.8U patent/CN211852796U/en active Active
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