CN209823555U - Power motor seal structure for new energy automobile - Google Patents
Power motor seal structure for new energy automobile Download PDFInfo
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- CN209823555U CN209823555U CN201920829540.9U CN201920829540U CN209823555U CN 209823555 U CN209823555 U CN 209823555U CN 201920829540 U CN201920829540 U CN 201920829540U CN 209823555 U CN209823555 U CN 209823555U
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Abstract
The utility model provides a power motor seal structure for new energy automobile, its sealing performance that makes the hookup location of motor shaft and motor end cover have good lubricating performance, ensure hookup location. The motor shaft penetrates through a center hole of the motor end cover, the motor end cover is provided with an inner side oil seal and an outer side oil seal corresponding to inner rings on two sides of the center hole of the motor shaft respectively, a spacing distance is reserved between the inner side oil seal and the outer side oil seal, the motor shaft penetrates through the inner side oil seal and the outer side oil seal, a pump blade rotor is sleeved on the length between the inner side oil seal and the outer side oil seal of the motor shaft, a pump cavity is arranged in the peripheral area of the motor end cover corresponding to the pump blade rotor, the two sides of the inner side oil seal and the outer side oil seal are sealed, and the pump cavity is externally connected with corresponding ends of an oil outlet pipeline and an oil return pipeline and further comprises an external oil storage tank.
Description
Technical Field
The utility model relates to a technical field that the motor is sealed specifically is a power motor seal structure for new energy automobile.
Background
The sealing requirement of the power motor for the new energy automobile is higher and higher, and besides the high sealing requirement of the product when leaving factory, the motor needs to be kept in a sealing state for a long time so as 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, because the rotating speed of the motor is very high, and meanwhile, the motor oil seal can only be lubricated by grease, the friction heat at the contact position of the oil seal and a motor shaft cannot be effectively taken away by the grease, the shaft surface is easy to be bluish and ablated, the oil seal lip is ablated, the oil seal is ineffective, the motor sealing is ineffective, and further the power motor is ineffective; meanwhile, due to the 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 problem, the utility model provides a power motor seal structure for new energy automobile, its sealing performance that makes the hookup location of motor shaft and motor end cover have good lubricating performance, ensures hookup location.
The utility model provides a power motor seal structure for new energy automobile which characterized in that: the motor comprises a motor shaft and a motor end cover, wherein the motor shaft penetrates through a center hole of the motor end cover, inner side oil seals and outer side oil seals are respectively arranged on the two sides of the motor end cover corresponding to inner rings of the center hole of the motor shaft, a spacing distance is reserved between the inner side oil seals and the outer side oil seals, the motor shaft penetrates through the inner side oil seals and the outer side oil seals, a pump blade rotor is sleeved on the length of the motor shaft between the inner side oil seals and the outer side oil seals, a pump cavity is arranged on the periphery area of the pump blade rotor corresponding to the motor end cover and is sealed by the two sides of the inner side oil seals and the outer side oil seals, the pump cavity is externally connected with corresponding ends of an oil outlet pipeline and an oil return pipeline, the motor also comprises an external oil storage tank, the top of the oil storage tank is connected with an oil outlet end, the lips of the inner side oil seal and the outer side oil seal are arranged oppositely and are arranged towards the pump cavity.
It is further characterized in that: the motor end cover is thickened at a connecting part corresponding to a motor shaft, the thickness of the connecting part comprises the thickness of an inner side oil seal, the thickness of an outer side oil seal and the thickness of a pump cavity, and the pump cavity is arranged in the middle area of the thickness of the connecting part;
the top of the pump cavity is connected with the oil inlet end of the oil outlet pipeline, and the bottom of the pump cavity is connected with the oil outlet end of the oil return pipeline;
under the state that the motor shaft is horizontally and transversely arranged, the diameters of the inner side oil seal and the outer side oil seal are the same, the highest liquid level of lubricating oil in the oil storage tank is higher than the highest points of the inner side oil seal and the outer side oil seal, and the lubricating oil positioned in the pump cavity is ensured to be immersed in the oil seals;
the top of the oil storage tank is provided with a vent plug, the vent plug ensures that the whole internal communication space is balanced with the external atmospheric pressure, and the abnormal oil seal caused by the increase of the air pressure due to high temperature or the decrease of the air pressure of the storage space due to low temperature is prevented;
the oil storage tank is directly integrated on the motor end plate, so that the heat dissipation capacity of the lubricating oil is improved;
the length of the oil return pipeline is set to be formed by combining a plurality of tangent arc pipes, so that the oil return pipeline is lengthened, and the effective heat dissipation of lubricating oil is promoted;
the motor end cover is formed by casting, and the pump cavity in the motor end cover, the oil outlet pipeline and the oil return pipeline confirm the tightness of the whole loop through an air tightness test;
according to different automobile motors and different rotating speeds and working condition requirements, the number and the shape of pump blades of the pump blade rotor are adjusted, so that the flow of lubricating oil in the whole loop is changed, the lubricating requirements of oil seals of different power motors are met, and the sealing reliability of the power motors is improved.
After the utility model is adopted, when the motor rotates at high speed, the pump blade rotor (which can be installed by interference or other various suitable mechanical connection modes) arranged on the motor shaft synchronously rotates along with the motor shaft to drive the lubricating oil to be pumped out through the oil outlet pipeline, and the lubricating oil in the oil storage tank enters the area where the pump blade rotor is positioned through the oil return pipeline; the pumped oil still enters the oil storage tank, so that the circulation of the whole lubricating oil is realized; because the lips of the inner oil seal and the outer oil seal are oppositely arranged and are arranged towards the pump cavity, the lubricating oil in the pump cavity ensures the effective lubrication of the lips; the motor shaft and the motor end cover have good lubricating performance at the connecting position, and the sealing performance of the connecting position is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A of the present invention;
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, a connecting part 21, an inner side oil seal 3, an outer side oil seal 4, a pump blade rotor 5, a pump cavity 6, an oil outlet pipeline 7, an oil return pipeline 8, an oil storage tank 9, lubricating oil 10 and a vent plug 11.
Detailed Description
A power motor sealing structure for a new energy automobile is shown in figures 1 and 2: the motor comprises a motor shaft 1 and a motor end cover 2, wherein the motor shaft 1 penetrates through a center hole of the motor end cover 2, inner side oil seals 3 and outer side oil seals 4 are respectively arranged on inner rings on two sides of the motor end cover 2 corresponding to the center hole of the motor shaft 1, a spacing distance is reserved between the inner side oil seals 3 and the outer side oil seals 4, the motor shaft 1 penetrates through the inner side oil seals 3 and the outer side oil seals 4, a pump vane rotor 5 is sleeved on the length of the motor shaft 1 between the inner side oil seals 3 and the outer side oil seals 4, a pump cavity 6 is arranged on the motor end cover 2 corresponding to the peripheral area of the pump vane rotor 5, the pump cavity 6 is sealed by the inner side oil seals 3 and two sides of the outer side oil seals 4, an oil outlet pipeline 7 and a corresponding end of an oil return pipeline 8 are externally connected to the pump cavity 6, the motor end cover further comprises an external oil storage, the lips of the inner oil seal 3 and the outer oil seal 4 are arranged oppositely and are arranged towards the pump cavity 6.
The connecting part 21 of the motor end cover 2 corresponding to the motor shaft 1 is thickened, the thickness of the connecting part 21 comprises the thickness of the inner side oil seal 3, the thickness of the outer side oil seal 4 and the thickness of the pump cavity 6, and the pump cavity 6 is arranged in the middle area of the thickness of the connecting part 21;
the top of the pump cavity 6 is connected with the oil inlet end of an oil outlet pipeline 7, and the bottom of the pump cavity 6 is connected with the oil outlet end of an oil return pipeline 8;
under the horizontal and transverse arrangement state of the motor shaft 1, the diameters of the inner side oil seal 3 and the outer side oil seal 4 are the same, the highest liquid level of lubricating oil 10 in the oil storage tank 9 is higher than the highest points of the inner side oil seal 3 and the outer side oil seal 4, and the lubricating oil positioned in the pump cavity 6 is ensured to submerge the oil seals;
the top of the oil storage tank 9 is provided with a vent plug 11, the vent plug 11 ensures that the whole internal communication space is balanced with the external atmospheric pressure, and the abnormal oil seal caused by the increase of the air pressure due to high temperature or the decrease of the air pressure of the storage space due to low temperature is prevented;
the oil storage tank 9 is directly integrated on the motor end plate, so that the heat dissipation capacity of the lubricating oil is improved;
the length of the oil return pipeline 8 is set to be formed by combining a plurality of tangent arc pipes, so that the oil return pipeline 8 is lengthened, and the effective heat dissipation of lubricating oil is promoted;
the motor end cover 2 is formed by casting, and the sealing performance of the whole loop is confirmed by an air tightness test of a pump cavity 6, an oil outlet pipeline 7 and an oil return pipeline 8 in the motor end cover 2;
according to different automobile motors and different rotating speeds and working condition requirements, the number and the shape of pump blades of the pump blade rotor 5 are adjusted, so that the flow of lubricating oil in the whole loop is changed, the lubricating requirements of oil seals of different power motors are met, and the sealing reliability of the power motors is improved.
The motor shaft, the motor end cover, the inner side oil seal, the outer side oil seal, the oil outlet and return pipeline and the oil storage tank form a storage space for lubricating oil, the motor shaft is provided with a pump blade rotor, and the pump blade rotor can drive the lubricating oil when rotating along with the motor shaft, so that the lubricating oil can circulate in the whole sealing implementation; the purpose of designing the lubricating oil circulation is to effectively take away huge heat generated by friction between a motor shaft and an oil seal when the motor shaft rotates at a high speed through the circulation of the lubricating oil; meanwhile, the lubricating oil can keep effective lubrication on the contact position of the oil seal and the motor shaft, thereby ensuring the long service life of the oil seal
When the motor rotates at a high speed, a pump blade rotor (which can be installed in an interference or other various suitable mechanical connection modes) arranged on a motor shaft synchronously rotates along with the motor shaft to drive lubricating oil to be pumped out through an oil outlet pipeline, and the lubricating oil in an oil storage tank enters an area where the pump blade rotor is located through an oil return pipeline; the pumped oil still enters the oil storage tank, so that the circulation of the whole lubricating oil is realized; because the lips of the inner oil seal and the outer oil seal are oppositely arranged and are arranged towards the pump cavity, the lubricating oil in the pump cavity ensures the effective lubrication of the lips; the motor shaft and the motor end cover have good lubricating performance at the connecting position, and the sealing performance of the connecting position is ensured.
The innovation point is as follows: the problem of reliability of the lip-shaped oil seal for sealing the power motor is thoroughly solved; the scheme of adding the pump impeller creatively enables the lubricating oil to be circulated; the practicability is strong.
The beneficial effects are as follows: the service life of the new energy power motor is greatly prolonged; the problem which puzzles the service life of the new energy power motor is thoroughly and effectively solved; easy to be implemented in batch.
The detailed description of the embodiments of the present invention has been provided, but the present invention is only the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the present invention shall fall within the scope of the present patent application.
Claims (9)
1. The utility model provides a new energy automobile is with power motor seal structure which characterized in that: the motor comprises a motor shaft and a motor end cover, wherein the motor shaft penetrates through a center hole of the motor end cover, inner side oil seals and outer side oil seals are respectively arranged on the two sides of the motor end cover corresponding to inner rings of the center hole of the motor shaft, a spacing distance is reserved between the inner side oil seals and the outer side oil seals, the motor shaft penetrates through the inner side oil seals and the outer side oil seals, a pump blade rotor is sleeved on the length of the motor shaft between the inner side oil seals and the outer side oil seals, a pump cavity is arranged on the periphery area of the pump blade rotor corresponding to the motor end cover and is sealed by the two sides of the inner side oil seals and the outer side oil seals, the pump cavity is externally connected with corresponding ends of an oil outlet pipeline and an oil return pipeline, the motor also comprises an external oil storage tank, the top of the oil storage tank is connected with an oil outlet end, the lips of the inner side oil seal and the outer side oil seal are arranged oppositely and are arranged towards the pump cavity.
2. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the motor end cover is thickened at a connecting part corresponding to a motor shaft, the thickness of the connecting part comprises the thickness of an inner side oil seal, the thickness of an outer side oil seal and the thickness of a pump cavity, and the thickness of the connecting part is arranged in the pump cavity in the middle of the connecting part.
3. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the top of the pump cavity is connected with the oil inlet end of the oil outlet pipeline, and the bottom of the pump cavity is connected with the oil outlet end of the oil return pipeline.
4. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: under the horizontal and transverse arrangement state of the motor shaft, the diameters of the inner side oil seal and the outer side oil seal are the same, and the highest liquid level of lubricating oil in the oil storage tank is higher than the highest points of the inner side oil seal and the outer side oil seal.
5. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the top of oil storage tank is provided with the breather plug, the breather plug guarantees that whole inside intercommunication space is balanced with outside atmospheric pressure.
6. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the oil storage tank is directly integrated on the motor end plate.
7. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the length of the oil return pipeline is set to be formed by combining a plurality of sections of tangent arc pipes.
8. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: the motor end cover is formed by casting, and the sealing performance of the whole loop is confirmed by an air tightness test of a pump cavity in the motor end cover, an oil outlet pipeline and an oil return pipeline.
9. The power motor sealing structure for the new energy automobile according to claim 1, characterized in that: and adjusting the quantity and the shape of the pump blades of the pump blade rotor according to different automobile motors and different rotating speeds and working condition requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829540.9U CN209823555U (en) | 2019-06-04 | 2019-06-04 | Power motor seal structure for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829540.9U CN209823555U (en) | 2019-06-04 | 2019-06-04 | Power motor seal structure for new energy automobile |
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| CN209823555U true CN209823555U (en) | 2019-12-20 |
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| CN201920829540.9U Active CN209823555U (en) | 2019-06-04 | 2019-06-04 | Power motor seal structure for new energy automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086287A (en) * | 2019-06-04 | 2019-08-02 | 苏州绿控传动科技股份有限公司 | A kind of new-energy automobile power motor sealing structure |
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2019
- 2019-06-04 CN CN201920829540.9U patent/CN209823555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086287A (en) * | 2019-06-04 | 2019-08-02 | 苏州绿控传动科技股份有限公司 | A kind of new-energy automobile power motor sealing structure |
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