CN222296924U - Speed reducer and vehicle - Google Patents
Speed reducer and vehicle Download PDFInfo
- Publication number
- CN222296924U CN222296924U CN202421332117.5U CN202421332117U CN222296924U CN 222296924 U CN222296924 U CN 222296924U CN 202421332117 U CN202421332117 U CN 202421332117U CN 222296924 U CN222296924 U CN 222296924U
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- China
- Prior art keywords
- sealing lip
- dust cover
- oil seal
- speed reducer
- hole
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 239000000428 dust Substances 0.000 claims abstract description 62
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000011499 joint compound Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 35
- 238000005452 bending Methods 0.000 description 21
- 230000009467 reduction Effects 0.000 description 10
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
本申请公开了一种减速器和车辆，涉及减速器技术领域，其中，减速器包括间隔设置的防尘罩和油封；所述防尘罩包括第一通孔，所述防尘罩通过所述第一通孔套设于所述减速器的半轴；所述油封包括第二通孔、第一密封唇和第二密封唇，所述油封通过所述第二通孔套设于所述半轴，所述第一密封唇设置于所述油封的朝向所述防尘罩的端面，且所述第一密封唇向所述防尘罩的方向延伸并与所述防尘罩过盈配合，所述第二密封唇相对所述第二通孔的内壁凸起，并与所述减速器的半轴过盈配合。本申请通过设置第一密封唇与防尘罩过盈配合，可有效降低外部环境中的杂质和泥沙等通过防尘罩与油封之间的间隙进入到第二密封唇的风险，能够提高减速器的密封效果。
The present application discloses a reducer and a vehicle, and relates to the technical field of reducers, wherein the reducer includes a dust cover and an oil seal arranged at intervals; the dust cover includes a first through hole, and the dust cover is sleeved on the half shaft of the reducer through the first through hole; the oil seal includes a second through hole, a first sealing lip and a second sealing lip, and the oil seal is sleeved on the half shaft through the second through hole, the first sealing lip is arranged on the end face of the oil seal facing the dust cover, and the first sealing lip extends in the direction of the dust cover and has an interference fit with the dust cover, and the second sealing lip is raised relative to the inner wall of the second through hole and has an interference fit with the half shaft of the reducer. The present application can effectively reduce the risk of impurities and mud and sand in the external environment entering the second sealing lip through the gap between the dust cover and the oil seal by setting the first sealing lip to have an interference fit with the dust cover, and can improve the sealing effect of the reducer.
Description
Technical Field
The application relates to the technical field of speed reducers, in particular to a speed reducer and a vehicle.
Background
The main speed reducer of the automobile is an assembly part capable of realizing speed reduction, torque increase, differential speed between wheels and changing the power transmission direction. The axle shaft oil seal is an important part in the main speed reducer, and its main functions include preventing the lubricating oil inside the main speed reducer from leaking from the axle shaft area, and preventing dirt, moisture, impurities, dust, etc. outside the main speed reducer from entering inside the main speed reducer. In the related art, the axle shaft oil seal generally includes a primary sealing lip and a secondary sealing lip, and the sealing is achieved by the cooperation of the sealing lips and the axle shaft. Only through sealing lip and semi-axis cooperation sealing, lead to sealing effect relatively poor.
Disclosure of utility model
The embodiment of the application provides a base station data detection system, which aims to solve the problem of low base station data detection efficiency in the prior art.
In order to solve the technical problems, the application is realized in such a way;
In a first aspect, an embodiment of the present application provides a speed reducer, including a dust cover and an oil seal that are disposed at intervals;
The dustproof cover comprises a first through hole, and the dustproof cover is sleeved on the half shaft of the speed reducer through the first through hole;
The oil seal comprises a second through hole, a first sealing lip and a second sealing lip, the oil seal is sleeved on the half shaft through the second through hole, the first sealing lip is arranged on the end face of the oil seal towards the dust cover, the first sealing lip extends towards the direction of the dust cover and is in interference fit with the dust cover, and the second sealing lip is opposite to the inner wall of the second through hole and is in interference fit with the half shaft of the speed reducer.
In a second aspect, an embodiment of the present application provides a vehicle including a speed reducer according to the first aspect.
In the embodiment of the application, the first sealing lip of the oil seal is arranged on the end face of the oil seal facing the dust cover, extends towards the dust cover and is in interference fit with the dust cover, and the second sealing lip of the oil seal is in interference fit with the half shaft. Through setting up first seal lip and dust cover interference fit, impurity and silt etc. in the external environment can effectively reduce and enter into the risk of second seal lip through the clearance between dust cover and the oil blanket, be favorable to improving the sealed effect of reduction gear, reduce the risk that the second seal lip suffered external damage, reach reliable protection effect to the second seal lip.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a speed reducer according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 provided in an embodiment of the present application;
FIG. 3 is a schematic structural view of a dust cover according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an oil seal according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1 to 4, an embodiment of the present application provides a speed reducer, which includes a dust cover 1 and an oil seal 2 arranged at intervals;
The dust cover comprises a first through hole, and the dust cover is sleeved on the half shaft 3 of the speed reducer through the first through hole;
The oil seal 2 comprises a second through hole, a first sealing lip 21 and a second sealing lip 22, the oil seal 2 is sleeved on the half shaft 3 through the second through hole, the first sealing lip 21 is arranged on the end face of the oil seal 2 facing the dust cover 1, the first sealing lip 21 extends towards the direction of the dust cover 1 and is in interference fit with the dust cover 1, and the second sealing lip 22 is opposite to the inner wall of the second through hole and is in interference fit with the half shaft 3 of the speed reducer.
The speed reducer is an important component of the vehicle, and in the embodiment of the application, the speed reducer can be an independent main speed reducer.
The dust cover 1 and the oil seal 2 are arranged at intervals, and are sleeved on the half shaft 3 of the main speed reducer through corresponding through holes respectively. The dust cover 1 is used to prevent dirt, moisture, impurities, dust, etc. in the environment outside the reduction gear from entering the interior of the reduction gear. In the embodiment of the application, the inner ring of the dust cover 1 (the inner ring forms the first through hole) is pressed on the half shaft 3 through interference fit and is assembled with the half shaft 3 into a whole, so that the sealing performance between the dust cover 1 and the half shaft 3 is improved, and the dust cover 1 rotates along with the half shaft 3 in the running process of a vehicle.
The oil seal 2 serves to prevent the lubricating oil inside the reduction gear from leaking from the area of the half shaft 3, and to prevent dirt, moisture, impurities, dust, etc. in the environment outside the reduction gear from entering the inside of the reduction gear. The outer lane of oil blanket 2 accessible interference fit pressure equipment is in the oil blanket mounting hole of reduction gear casing 4, and in the vehicle driving, oil blanket 2 does not rotate along with the casing 4 of reduction gear, and the relative friction operation of the seal lip that the inner wall of semi-axis 3 and the second through-hole of oil blanket 2 set up. The inner wall of the inner ring of the oil seal 2 (or the inner wall of the second through hole) is convexly provided with a second sealing lip 22, and the second sealing lip 22 is in interference fit with the half shaft 3 and is used for preventing lubricating oil in the speed reducer from leaking from the area of the half shaft 3, and the second sealing lip 22 can also be called as a main sealing lip of the oil seal 2. The oil blanket 2 is provided with first seal lip 21 towards the terminal surface of dust cover 1, first seal lip 21 and dust cover 1 interference fit to can effectively reduce the risk that outside impurity etc. invaded second seal lip 22 fish tail to second seal lip 22 department from the clearance between dust cover 1 and the oil blanket 2, reach reliable protection effect to second seal lip 22, thereby reduce the risk of reduction gear lubricating oil seepage.
According to the embodiment of the application, the first sealing lip 21 is in interference fit with the dust cover 1, so that the risk that impurities, silt and the like in the external environment enter the second sealing lip 22 through the gap between the dust cover 1 and the oil seal 2 can be effectively reduced, the sealing effect of the speed reducer is improved, the risk that the second sealing lip 22 is damaged outside is reduced, and the reliable protection effect on the second sealing lip 22 is achieved.
Optionally, the dust cover 1 includes an outer ring and an inner ring forming the first through hole, and the dust cover 1 further includes a bending portion disposed between the outer ring and the inner ring, the bending portion includes a first bending ring 11, a second bending ring 12, and a straight ring 13 between the first bending ring 11 and the second bending ring 12, an axis of the straight ring 13 is parallel to an axis of the half shaft 3, and the first sealing lip 21 is in interference fit with an inner wall of the straight ring 13.
In this embodiment, the bent portions provided on the inner ring and the outer ring are configured to be in contact with the first seal lip 21, thereby realizing seal protection. Specifically, the bending portion includes a first bending ring 11, a second bending ring 12, and a straight ring 13 between the first bending ring 11 and the second bending ring 12, where the axis of the straight ring 13 is parallel to the axis of the half shaft 3. The first bending ring 11 and the second bending ring 12 refer to rings with bending on the inner wall, and as shown in fig. 1 to 2, the opening directions of the first bending ring 11 and the second bending ring 12 can be opposite. The first sealing lip 21 is in interference fit with the inner wall of the straight ring 13, the straight ring 13 refers to a ring with no bending on the inner wall, and the length of the inner wall of the straight ring 13 can be longer. The related parts of the main reducer have dimensional tolerance and assembly tolerance in the axial direction of the half shaft 3, and the length of the inner wall of the straight ring 13 is longer, so that the first sealing lip 21 can still be in interference fit with the inner wall of the straight ring 13 under the limit tolerance, but not with the inner wall of the first bending ring 11 or the second bending ring 12.
According to the embodiment of the application, the first sealing lip 21 is matched with the straight ring 13 of the bending part instead of the bending ring, so that the contact fit interference of the dust cover 1 and the first sealing lip 21 is beneficial to meeting the design requirement, and the consistency and stability of the fit state are further ensured.
Optionally, the straight ring 13 is a straight ring 13 with equal inner diameter.
The straight coils 13 are straight coils 13 with equal inner diameters, that is, the inner diameter dimensions of the straight coils 13 are the same in the axial direction. Through this setting, at dust cover 1 and the relative friction in-process of operation of oil blanket 2, can remain interference fit throughout, maintain sealing performance.
Alternatively, the outer ring of the dust cover 1 is circumferentially provided with an insertion portion 14 protruding toward the oil seal 2, the housing 4 of the speed reducer is circumferentially provided with a groove 41 fitted with the insertion portion 14, and the insertion portion 14 is inserted into the groove 41.
In this embodiment, after the half shaft 3 is assembled, the insertion portion 14 of the outer ring of the dust cover 1 is inserted into the groove 41 of the housing 4 of the speed reducer, and is shielded in cooperation with the groove 41, so as to form a labyrinth-like channel. By the above arrangement, the dust-proof performance of the dust cover 1 is advantageously improved.
In some embodiments, the dust cap 1 may be a metal piece to increase the useful life of the dust cap 1. During the running process of the vehicle, the outer ring of the dust cover 1 rotates in the groove 41, and as the dust cover 1 and the shell 4 of the speed reducer are metal pieces, a certain gap can be reserved between the dust cover 1 and the groove 41 in a matching way, so that friction is reduced. When the dustproof cover is configured, the gap between the edge of the outer ring of the dustproof cover 1 and the edge of the groove 41 of the shell 4 of the speed reducer is required to be as small as possible so as to achieve better protection effect.
Optionally, an inner ring of the dust cover 1 is provided with a fitting portion 15 extending towards the direction of the oil seal 2 in a surrounding manner, and the fitting portion 15 is fitted with the half shaft 3.
In this embodiment, the contact area between the dust cover 1 and the half shaft 3 can be increased by providing the above-mentioned attaching portion 15, which is advantageous for improving the stability of the dust cover 1 mounted on the half shaft 3 and for improving the sealing performance.
Optionally, the oil seal 2 further includes a third sealing lip 23, the third sealing lip 23 protrudes with respect to the inner wall of the second through hole, and the third sealing lip 23 is close to the dust cover 1 with respect to the second sealing lip 22.
In this embodiment, the oil seal 2 further includes a third sealing lip 23 for protecting impurities, silt, etc. in the external environment of the speed reducer, and preventing the impurities, silt, etc. in the external environment from scratching the first sealing lip 21 to cause leakage of lubricating oil. It can be seen that the protective effect can be improved by providing the third seal lip 23.
Optionally, the inner diameter of the third sealing lip 23 is smaller than the inner diameter of the second sealing lip 22.
The second sealing lip 22 is a main sealing lip for preventing leakage of lubricating oil from the area of the half shaft 3. The third seal lip 23 is a secondary seal lip for improving the protective effect. The inner diameter of the third sealing lip 23 is smaller than that of the second sealing lip 22, the second sealing lip 22 is in interference fit with the half shaft 3, and the third sealing lip 23 can be in small interference fit with the half shaft 3.
The outer ring of the oil seal 2 is pressed in the oil seal mounting hole of the shell 4 of the speed reducer through interference fit, and when the vehicle runs, the second sealing lip 22 and the third sealing lip 23 of the oil seal 2 are in relative friction operation with the half shaft 3. By providing the inner diameter of the third sealing lip 23 smaller than the inner diameter of the second sealing lip 22, it is advantageous to reduce the frictional resistance experienced when the half shaft 3 rotates.
Optionally, the oil seal 2 further includes a fourth sealing lip 24, the fourth sealing lip 24 is disposed between the third sealing lip 23 and the second sealing lip 22, and an inner diameter of the fourth sealing lip 24 is smaller than an inner diameter of the third sealing lip 23.
In this embodiment, by setting up as above, the frictional resistance that receives when the half shaft 3 rotates is avoided too big while the protective effect can be further improved.
Optionally, the third sealing lip 23 is in interference fit with the half shaft 3, and the fourth sealing lip 24 is in transition fit with the half shaft 3.
In this embodiment, the third sealing lip 23 may be a small interference fit with the half shaft 3. Through setting up third seal lip 23 with semi-axis 3 interference fit, fourth seal lip 24 and semi-axis 3 transitional fit, when can further improve the protection effect, the frictional resistance that receives when avoiding semi-axis 3 to rotate is too big.
The embodiment of the application also provides a vehicle, which comprises the speed reducer of any embodiment. The vehicle may be any vehicle that requires a retarder to be installed, such as off-road vehicles and passenger cars.
It should be noted that any of the above embodiments of the speed reducer may be applied to the vehicle in this embodiment, and the same technical effects may be achieved, so that repetition is avoided and redundant description is omitted.
The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. The speed reducer is characterized by comprising a dust cover and an oil seal which are arranged at intervals;
The dustproof cover comprises a first through hole, and the dustproof cover is sleeved on the half shaft of the speed reducer through the first through hole;
The oil seal comprises a second through hole, a first sealing lip and a second sealing lip, the oil seal is sleeved on the half shaft through the second through hole, the first sealing lip is arranged on the end face of the oil seal towards the dust cover, the first sealing lip extends towards the direction of the dust cover and is in interference fit with the dust cover, and the second sealing lip is opposite to the inner wall of the second through hole and is in interference fit with the half shaft of the speed reducer.
2. The speed reducer of claim 1, wherein the dust cover comprises an outer race and an inner race forming the first through hole, and the dust cover further comprises a bend disposed between the outer race and the inner race, the bend comprising a first bend, a second bend, and a straight loop between the first bend and the second bend, an axis of the straight loop being parallel to an axis of the half shaft, the first sealing lip being in interference fit with an inner wall of the straight loop.
3. A decelerator according to claim 2 wherein the coils are equal inner diameter coils.
4. A decelerator according to any one of claims 1 to 3 wherein the outer race of the dust cap is circumferentially provided with an insertion portion protruding in the direction of the oil seal, and the housing of the decelerator is circumferentially provided with a groove fitted with the insertion portion, the insertion portion being inserted into the groove.
5. A reducer according to any one of claims 1 to 3, wherein an inner ring of the dust cover is circumferentially provided with a fitting portion extending in a direction of the oil seal, the fitting portion fitting with the half shaft.
6. The speed reducer of claim 1, wherein the oil seal further comprises a third sealing lip, the third sealing lip protruding relative to an inner wall of the second through hole, and the third sealing lip being proximate to the dust cover relative to the second sealing lip.
7. The speed reducer of claim 6, wherein an inner diameter of the third sealing lip is smaller than an inner diameter of the second sealing lip.
8. The speed reducer of claim 6 or 7, wherein the oil seal further comprises a fourth sealing lip disposed between the third sealing lip and the second sealing lip, the fourth sealing lip having an inner diameter smaller than an inner diameter of the third sealing lip.
9. The speed reducer of claim 8, wherein the third sealing lip is an interference fit with the axle shaft and the fourth sealing lip is a transition fit with the axle shaft.
10. A vehicle comprising a decelerator according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421332117.5U CN222296924U (en) | 2024-06-12 | 2024-06-12 | Speed reducer and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421332117.5U CN222296924U (en) | 2024-06-12 | 2024-06-12 | Speed reducer and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222296924U true CN222296924U (en) | 2025-01-03 |
Family
ID=93974432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421332117.5U Active CN222296924U (en) | 2024-06-12 | 2024-06-12 | Speed reducer and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222296924U (en) |
-
2024
- 2024-06-12 CN CN202421332117.5U patent/CN222296924U/en active Active
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| GR01 | Patent grant |