CN210949784U - Motor transmission gear box and motor - Google Patents
Motor transmission gear box and motor Download PDFInfo
- Publication number
- CN210949784U CN210949784U CN201921416418.5U CN201921416418U CN210949784U CN 210949784 U CN210949784 U CN 210949784U CN 201921416418 U CN201921416418 U CN 201921416418U CN 210949784 U CN210949784 U CN 210949784U
- Authority
- CN
- China
- Prior art keywords
- gear box
- motor
- output shaft
- seal
- end cover
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 abstract description 17
- 239000010687 lubricating oil Substances 0.000 abstract description 15
- 239000000314 lubricant Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model provides a motor drive gear box and motor, especially door window motor. The motor transmission gear box comprises a transmission gear box shell, a transmission unit and an end cover, wherein the transmission unit is accommodated in the transmission gear box shell, the end cover is installed on the transmission gear box shell, the end cover comprises an end cover main body and a seal assembled on the end cover main body, the seal is provided with a sealing lip which extends inwards in the radial direction, the transmission unit is provided with an output shaft which extends out of the transmission gear box shell, and the sealing lip is in sealing abutting contact with the output shaft. According to the utility model discloses, the part that output shaft and seal lip seal were supported and are leaned on is equipped with the drive unit oil storage tank. The motor comprises the motor transmission gear box. According to the utility model discloses, because the existence of transmission unit oil storage tank, increased lubricating oil storage space for sufficient lubricating oil has in the sealing area between seal lip and the output shaft. Therefore, frictional noise between the end cap and the output shaft, particularly at extreme temperatures, is reduced.
Description
Technical Field
The utility model relates to a vehicle field. Specifically, on the one hand, the utility model relates to a motor drive gear box. On the other hand, the utility model relates to a motor, especially door window motor including this motor drive gear box.
Background
Figure 1 shows a motor drive gearbox of prior art design. The motor drive gearbox 1 ' comprises a drive gearbox housing (not shown), a drive unit 20 ' accommodated in the drive gearbox housing and an end cap 10 ' mounted to the drive gearbox housing. The transmission unit 20 'has an output shaft 21' extending out of the transmission gearbox housing. The end cap 10 ' is generally annular and includes an end cap body 11 ' and a seal 12 ' mounted to the end cap body, the seal 12 ' having a radially inwardly projecting sealing lip 12a ', the sealing lip 12a ' bearing against the output shaft 21 ' for sealing. The portion of the outer periphery of the sealing lip and against which the output shaft seals is coated with lubricating oil 30' to provide lubrication during operation of the motor drive gearbox. Further, the seal lip 12a ' may be provided at the outer periphery with an oil reservoir 12b ' for storing the lubricating oil 30 ' therein. The seal is typically a rubber material.
With the above design, even if the oil reservoir 12b 'is provided, the amount of lubrication on the seal lip 12 a' is very limited. When the end cap 10 ' is installed (typically pressed) with the seal 12 ', as shown in fig. 1, however, most of the lubricating oil 30 ' on the output shaft 21 ' will be collected under the end cap 10 ', while only a small amount of the lubricating oil 30 ' can remain in the sealing area defined between the sealing lip 12a ' and the output shaft. Moreover, when the motor drive gearbox is operated, an oil film formed by the lubricating oil 30' will gradually run off from the sealing area between the seal lip and the output shaft over time. In practice, the lubricating oil will flow away from the sealing area during several cycles of operation of the motor drive gearbox. As a result, the lubrication performance of the existing designs is poor. Moreover, when the lubricant runs off, sharp frictional noise will also be generated between the sealing lip and the output shaft, especially at extreme temperatures.
Disclosure of Invention
The object of the present invention is therefore to overcome the above-mentioned drawbacks of the prior art.
According to a first aspect, the utility model provides a motor drive gear box, include the drive gear box shell, hold the drive unit in this drive gear box shell and install in the end cover of this drive gear box shell, the end cover includes the end cover main part and assembles the sealed in the end cover main part, sealed have the seal lip that radially inwards stretches out, the drive unit has the output shaft that stretches out the drive gear box shell, wherein the seal lip seal support lean on in the output shaft. According to the utility model discloses, the part that output shaft and seal lip seal were supported and are leaned on is equipped with the drive unit oil storage tank. With this arrangement, the lubricant storage space is increased.
According to an embodiment, the cross-sectional shape of the oil reservoir of the transmission unit is arc-shaped. Of course, other cross-sectional shapes are possible.
According to an embodiment, the sealing lip is at least partially accommodated in the transmission unit oil reservoir. With this arrangement, it is advantageous to prevent the lubricant from running off when the motor transmission gear box is in operation.
According to an embodiment, the seal and the end cap body are integral. With this arrangement, the manufacture of the motor drive gear box is facilitated.
According to the embodiment, the outer periphery of the portion of the sealing lip which is in sealing abutment with the output shaft is provided with the sealing oil storage groove. With this arrangement, the lubricant storage space is further increased.
According to a second aspect, the present invention provides an electric machine comprising a motor transmission gear box as described above.
According to the utility model discloses, because the existence of transmission unit oil storage tank, increased lubricating oil storage space, especially increased the epaxial lubricating oil of output for sufficient lubricating oil has in the sealing area between seal lip and the output shaft. When the motor transmission gear box works, lubricating oil is continuously supplemented along with the rotation of the output shaft, so that the friction noise between the end cover and the output shaft of the transmission unit, particularly the friction noise at extreme temperature, is reduced.
Drawings
In the drawings, embodiments of the invention are shown in simplified form for the sake of clarity. Like reference numerals refer to like parts throughout the drawings.
In the drawings:
FIG. 1 is a schematic cross-sectional view of a prior art motor drive gearbox; and
fig. 2 is a schematic cross-sectional view of a motor drive gearbox according to an embodiment of the present invention.
Detailed Description
An embodiment of the present invention is described below with reference to fig. 2.
Fig. 2 shows a motor drive gearbox 1 according to an embodiment of the present invention, which includes a drive gearbox housing (not shown), a drive unit 20 accommodated in the drive gearbox housing, and an end cover 10 mounted to the drive gearbox housing. The end cap 10 is generally annular in shape and includes a seal 12 integral with the end cap body 11 and the end cap body 10. The seal 12 has a radially inwardly projecting sealing lip 12a, the end of which sealing lip 12a has a rounded configuration. The transmission unit 20 has an output shaft 21 projecting out of the transmission gearbox housing, the sealing lip 12a sealing against the output shaft 21.
Fig. 2 also shows that the portion of the output shaft 21 that sealingly abuts the seal lip 12a is provided with a transmission unit oil reservoir 22, in which lubricating oil 30 is stored. The transmission unit oil reservoir 22 has an arc-shaped cross-sectional shape, and the seal lip 12a is accommodated in the transmission unit oil reservoir 22.
Further, a seal oil reservoir 12b is provided on the outer periphery of a portion where the seal lip 12a is sealed against the output shaft 21.
The embodiments discussed in the detailed description and illustrated in the figures are merely illustrative exemplary embodiments. For example, in the embodiment, the motor end cap is used for a window motor, but may be used for other types of motors. In addition, the transmission unit reservoir may be of a different shape than in the embodiment, and the sealing lip may have another shape. In some cases, the features disclosed in the present invention may be used independently of other features. On the other hand, when necessary, the features disclosed in the present invention may be combined to provide various combinations.
List of reference numerals
1 Motor drive gear box
10 motor end cover
11 end cap body
12 seal
12a sealing lip
12b sealed oil storage tank
20 drive unit
21 output shaft
22 oil storage tank of transmission unit
30 lubricating oil
1' motor transmission gear box
10' motor end cover
11' end cap body
12' seal
12 a' sealing lip
12 b' oil storage tank
20' transmission unit
21' output shaft
30' lubricating oil
Claims (6)
1. The utility model provides a motor drive gear box, includes drive gear box shell, holds the drive unit in this drive gear box shell and installs the end cover in this drive gear box shell, the end cover includes the end cover main part and assembles the sealed in the end cover main part, sealed has the radial inward protruding seal lip, the drive unit has the output shaft that stretches out the drive gear box shell, wherein the seal lip sealed support in the output shaft, its characterized in that, the part that the output shaft supported with the seal lip seal to support is equipped with the drive unit oil storage tank.
2. The motor drive gearbox of claim 1, wherein the cross-sectional shape of the drive unit oil sump is arcuate.
3. The motor drive gearbox of claim 1, wherein the sealing lip is at least partially received in a drive unit sump.
4. A motor drive gearbox according to any of claims 1-3, characterised in that the seal and the end cap body are one piece.
5. A motor drive gearbox according to any one of claims 1-3, characterised in that a sealing oil reservoir is provided on the periphery of the portion of the sealing lip that seals against the output shaft.
6. An electric machine, characterized in that the electric machine comprises a motor transmission gearbox according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921416418.5U CN210949784U (en) | 2019-08-28 | 2019-08-28 | Motor transmission gear box and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921416418.5U CN210949784U (en) | 2019-08-28 | 2019-08-28 | Motor transmission gear box and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949784U true CN210949784U (en) | 2020-07-07 |
Family
ID=71371762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921416418.5U Expired - Fee Related CN210949784U (en) | 2019-08-28 | 2019-08-28 | Motor transmission gear box and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949784U (en) |
-
2019
- 2019-08-28 CN CN201921416418.5U patent/CN210949784U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |