CN210087965U - Oil seal structure of output shaft of transmission - Google Patents
Oil seal structure of output shaft of transmission Download PDFInfo
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- CN210087965U CN210087965U CN201920716125.2U CN201920716125U CN210087965U CN 210087965 U CN210087965 U CN 210087965U CN 201920716125 U CN201920716125 U CN 201920716125U CN 210087965 U CN210087965 U CN 210087965U
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- oil seal
- output shaft
- output
- output flange
- flange
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Abstract
An oil seal sealing structure of an output shaft of a transmission comprises the output shaft, a rear bearing cover of the output shaft, an annular oil seal, an output flange, an oil seal supporting ring and an O-shaped sealing ring. The utility model has stable sealing structure through the arrangement of the oil seal supporting ring and the O-shaped sealing ring, and can effectively solve the problems of eccentric wear and oil leakage of the oil seal caused by the swing of the output flange; because the oil seal lip contact area of the output flange is replaced by the oil seal support ring, the oil seal support ring can be made of high-wear-resistant materials, and has small parts, easy processing, good manufacturability and easy guarantee of precision; the oil seal support ring can be independently replaced in market maintenance, so that the service and maintenance cost is reduced; the output flange is not in direct contact with the annular oil seal any more, the requirement on the processing technology is low, and the processing cost is reduced; the influence of the swing of the output flange on the sealing of the annular oil seal is greatly reduced in the running process of the vehicle, the sealing reliability of the annular oil seal is greatly improved, and the working requirements under different working conditions can be met.
Description
Technical Field
The utility model belongs to the technical field of derailleur output shaft oil blanket is sealed, seal structure, what especially relate to is a derailleur output shaft oil blanket seal structure.
Background
At present, a flange for power transmission is installed at the output end of an output shaft of a transmission on an automobile, an oil seal is installed on a rear bearing cover of the output shaft, a lip of the oil seal is attached to the outer circular surface of the flange, the oil seal is static, and the flange rotates along with the output shaft to form a dynamic sealing structure. The seal arrangement is assembled as shown in figures 1 and 2 of the drawings.
The sealing effect of the oil seal of the sealing structure is greatly influenced by the flange which is connected with the transmission shaft, the vibration of the transmission shaft can cause the swing of the flange during the running of a vehicle, so that the sealing of the oil seal is influenced, and after the sealing structure runs for a long time, the oil seal is easy to wear and lose efficacy, so that the oil leakage of the transmission is caused; in addition, the structure has complex flange process, the lip contact area of the oil seal on the outer circular surface of the flange has high requirements on hardness and roughness, and the flange processing cost is increased; the flange needs to be replaced after the oil leakage of the transmission, and the maintenance cost is high.
Disclosure of Invention
To the problem, the utility model provides a low to flange technological requirement, it is little influenced by the flange, stable in structure, difficult eccentric wear, long service life's derailleur output shaft oil blanket seal structure. In order to realize the purpose, the utility model discloses a specific technical scheme as follows:
the utility model provides a derailleur output shaft oil blanket seal structure, it includes output shaft, output shaft rear bearing cap, annular oil blanket, output flange, output shaft externally mounted has output shaft rear bearing cap, installs annular oil blanket on the output shaft rear bearing cap, characterized in that: the oil seal support ring is arranged on the output shaft and is positioned at the front end of the output flange, namely the length of the output flange is shortened on the basis of the original structure, an oil seal lip contact area of the output flange is eliminated, in order to ensure the effective length of a connecting spline of the output flange, an L-shaped groove is arranged on one side of the output flange of the oil seal support ring, the bottom of the L-shaped groove is combined with the front end face of the output flange, the inner circular surface is in clearance fit with the output flange, the outer circular surface is in fit sealing with the lip of the annular oil seal, so that the direct association between the annular oil seal and the output flange is broken, and the annular oil seal and the; the O-shaped sealing ring is tightly pressed on the output shaft and is arranged at the position of the joint surface at the front end of the oil seal supporting ring, so that the leakage of lubricating oil between the inner diameter of the oil seal supporting ring and the output shaft is prevented, and the sealing reliability is ensured.
The utility model has the advantages that: the utility model has stable sealing structure through the arrangement of the oil seal supporting ring and the O-shaped sealing ring, and can effectively solve the problems of eccentric wear and oil leakage of the oil seal caused by the swing of the output flange; because the oil seal lip contact area of the output flange is replaced by the oil seal support ring, the oil seal support ring can be made of high-wear-resistant materials, and has small parts, easy processing, good manufacturability and easy guarantee of precision; the oil seal support ring can be independently replaced in market maintenance, so that the service and maintenance cost is reduced; the output flange is not in direct contact with the annular oil seal any more, the requirement on the processing technology is low, and the processing cost is reduced; the influence of the swing of the output flange on the sealing of the annular oil seal is greatly reduced in the running process of the vehicle, the sealing reliability of the annular oil seal is greatly improved, and the working requirements under different working conditions can be met.
Drawings
Fig. 1 is a schematic diagram of a conventional oil seal structure of a transmission output shaft.
Fig. 2 is an enlarged view of the lip portion of the annular oil seal of fig. 1.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is an enlarged view of the lip portion of the annular oil seal of fig. 3.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 3 and 4, an oil seal structure of an output shaft of a transmission comprises an output shaft 1, an output shaft rear bearing cover 2, an annular oil seal 3 and an output flange 4, wherein the output shaft rear bearing cover 2 is installed outside the output shaft 1, and the annular oil seal 3 is installed on the output shaft rear bearing cover 2, and is characterized in that: the oil seal support ring 5 is arranged on the output shaft 1 and is positioned at the front end of the output flange 4, in order to ensure the effective length of the connection spline of the output flange 4, an L-shaped groove is arranged on one side of the output flange 4 of the oil seal support ring 5, the bottom of the L-shaped groove is combined with the front end surface of the output flange 4, the inner circular surface is in clearance fit with the output flange 4, the outer circular surface is in fit sealing with the lip of the annular oil seal 3, so that the direct connection between the annular oil seal 3 and the output flange 4 is disconnected, and the annular oil seal 3 and the output flange 4 are mutually independent; the O-shaped sealing ring 6 is tightly pressed and arranged on the output shaft 1 at the position of the front end combining surface of the oil seal supporting ring 5.
Further, as shown in fig. 4B, in order to ensure the effective length of the connection spline of the output flange 4, the oil seal support ring 5 is provided with an L-shaped groove on one side of the output flange, the bottom of the L-shaped groove is combined with the front end face of the output flange 4, and the inner circular face is in large clearance fit with the outer circular face of the output flange 4.
Further, as shown in fig. 4A, the O-ring 6 is tightly pressed on the output shaft 1 and installed at a position of a chamfer of the inner diameter of the joint surface at the front end of the oil seal support ring 5, so as to prevent the leakage of the lubricating oil from between the inner diameter of the oil seal support ring 5 and the output shaft 1 and ensure the reliability of the sealing.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made by the ordinary skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a derailleur output shaft oil blanket seal structure, it includes output shaft (1), output shaft rear bearing cap (2), annular oil blanket (3), output flange (4), output shaft (1) externally mounted has output shaft rear bearing cap (2), installs annular oil blanket (3) on output shaft rear bearing cap (2), characterized in that: the oil seal support ring is characterized by further comprising an oil seal support ring (5) and an O-shaped sealing ring (6), wherein the oil seal support ring (5) is installed on the output shaft (1) and located at the front end of the output flange (4), an L-shaped groove is formed in one side of the output flange (4) of the oil seal support ring (5), the bottom of the L-shaped groove is combined with the front end face of the output flange (4), the inner circular surface is in clearance fit with the output flange (4), the outer circular surface is attached to and sealed with the lip of the annular oil seal (3), the annular oil seal (3) is independent of the output flange (4), and the O-shaped sealing ring (6) is tightly pressed on the output shaft (1) and installed at the position of the.
2. A transmission output shaft oil seal structure according to claim 1, characterized in that: the inner circle surface of the L-shaped groove area of the oil seal support ring (5) is in large clearance fit with the outer circle surface of the output flange (4).
3. A transmission output shaft oil seal structure according to claim 1, characterized in that: the O-shaped sealing ring (6) is tightly pressed and arranged on the output shaft (1) at the position of the inner diameter chamfer of the front end combining surface of the oil seal supporting ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716125.2U CN210087965U (en) | 2019-05-19 | 2019-05-19 | Oil seal structure of output shaft of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716125.2U CN210087965U (en) | 2019-05-19 | 2019-05-19 | Oil seal structure of output shaft of transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087965U true CN210087965U (en) | 2020-02-18 |
Family
ID=69478928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716125.2U Active CN210087965U (en) | 2019-05-19 | 2019-05-19 | Oil seal structure of output shaft of transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087965U (en) |
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2019
- 2019-05-19 CN CN201920716125.2U patent/CN210087965U/en active Active
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