CN218267173U - Engine main and auxiliary shaft lubricating oil channel sealing structure - Google Patents
Engine main and auxiliary shaft lubricating oil channel sealing structure Download PDFInfo
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- CN218267173U CN218267173U CN202222342217.3U CN202222342217U CN218267173U CN 218267173 U CN218267173 U CN 218267173U CN 202222342217 U CN202222342217 U CN 202222342217U CN 218267173 U CN218267173 U CN 218267173U
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Abstract
The utility model discloses a sealing structure of lubricating oil ducts of main shafts and auxiliary shafts of an engine, which comprises a crankcase body, a bearing and a shaft assembly; the crankcase body is provided with a bearing mounting hole and a crankcase body oil duct which are communicated; the bearing is arranged in the bearing mounting hole; the shaft assembly comprises a shaft body and a gear arranged on the shaft body, and a shaft body oil passage is formed in the shaft body; the connecting end of the shaft body is arranged in the bearing, and a shaft body oil duct of the shaft body is communicated with a box body oil duct; an oil passing channel for communicating the oil duct of the box body and the inner cavity of the bearing is formed between the connecting end of the shaft body and the inner wall of the bearing mounting hole, an oil seal is matched inside the bearing, and the oil seal is completely abutted against the inner wall of the shell of the bearing and the outer wall of the connecting end of the shaft body. The utility model discloses can make lubricating oil can get into the bearing inner chamber and lubricate the bearing, simultaneously the utility model discloses can also prevent to get into the lubricating oil of bearing and outwards reveal.
Description
Technical Field
The utility model relates to an engine field especially indicates an engine owner countershaft lubricating oil duct seal structure.
Background
The engine of motorcycle has a gear shifting mechanism driven by mechanical gear and has the advantages of low cost, stable running and high reliability. In the operation process of a main shaft assembly and a secondary shaft assembly of the existing engine, sliding friction exists between a gear and a main shaft or a secondary shaft, and lubricating oil is needed for cooling and lubricating. The existing scheme is that lubricating oil is conveyed from an oil channel of a crankcase body to an oil channel of a main shaft (or an auxiliary shaft), and then the lubricating oil enters a gap between a gear and the main shaft (or the auxiliary shaft) from an oil outlet of the main shaft (or the auxiliary shaft); at present, the sealing treatment is not carried out on the joint of the oil duct of the crankcase body and the oil duct of the main shaft (or the auxiliary shaft), so that lubricating oil leaks out from the joint of the oil duct of the crankcase body and the oil duct of the main shaft (or the auxiliary shaft) due to pressure in the conveying process, the leaked lubricating oil can be used for lubricating a bearing, the leaked oil quantity is not easy to control, and when the leaked oil quantity is too much, the lubrication deficiency of the main shaft (or the auxiliary shaft) is easily caused, and further the main shaft (or the auxiliary shaft) is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an engine owner countershaft lubricating oil duct seal structure to overcome not enough among the prior art.
In order to achieve the above purpose, the solution of the present invention is:
a sealing structure of a lubricating oil passage of a main shaft and an auxiliary shaft of an engine comprises a crankcase body, a bearing and a shaft assembly; the crankcase body is provided with a bearing mounting hole and a crankcase body oil duct communicated with the bearing mounting hole; the bearing is arranged in the bearing mounting hole; the shaft assembly comprises a shaft body and a gear arranged on the shaft body, a shaft body oil duct is formed in the shaft body, an oil inlet communicated with the shaft body oil duct is formed in the end face of the connecting end of the shaft body, and an oil outlet communicated with the shaft body oil duct is formed in the side wall of the shaft body corresponding to the gear; the connecting end of the shaft body is arranged in the bearing, and an oil inlet of the shaft body is communicated with an oil duct of the box body; the oil seal structure is characterized in that an oil passing channel for communicating an oil duct of the box body and an inner cavity of the bearing is formed between the connecting end of the shaft body and the inner wall of the bearing mounting hole, an oil seal is matched inside the bearing and is positioned on one side, away from the bearing mounting hole, of the bearing, and the oil seal abuts against the inner wall of a shell of the bearing and the outer wall of the connecting end of the shaft body in the whole circumference.
The bearing is a needle bearing.
The port of the shell of the bearing forms an inward convex blocking edge which is in limit fit with the oil seal.
The bearing mounting hole comprises an outer hole, an inner hole and a middle hole for connecting the outer hole and the inner hole, the aperture of the outer hole, the aperture of the middle hole and the aperture of the inner hole are sequentially decreased, and the inner hole is communicated with the oil duct of the box body; the bearing is mounted in the outer bore.
The bearing mounting hole comprises an outer hole and an inner hole which are connected, the aperture of the outer hole is larger than that of the inner hole, a circle of chamfer is formed at the joint of the outer hole and the inner hole, and the inner hole is communicated with the oil duct of the box body; the bearing is mounted in the outer bore.
The chamfer is a chamfer angle.
The bearing is in interference fit with the outer hole.
A gasket is clamped between the crankcase body and the shaft assembly, and the shaft body is sleeved with the gasket and seals the bearing mounting hole.
After the scheme is adopted, the oil passing channel for communicating the box body oil duct with the bearing inner cavity is formed between the connecting end of the shaft body and the inner wall of the bearing mounting hole, so that in the process of conveying lubricating oil from the box body oil duct to the shaft body oil duct, the lubricating oil can enter the bearing inner cavity through the oil passing channel to lubricate the bearing due to the conveying pressure; and bearing inside cooperation has the oil blanket, and the oil blanket is in the one side that the bearing mounting hole was kept away from to the bearing, and the oil blanket is whole week to lean on the shell inner wall of bearing and the link outer wall of axis body, and the lubricating oil that can prevent to enter into in the bearing of oil blanket like this is outwards revealed.
Drawings
Fig. 1 is a combined cross-sectional view of a first embodiment of the present invention;
fig. 2 is a partial structural sectional view of a crankcase body according to a first embodiment of the invention;
fig. 3 is a combined cross-sectional view of a second embodiment of the present invention;
fig. 4 is a partial structural sectional view of a crankcase body according to a second embodiment of the invention;
fig. 5 is a schematic view of the fit between the bearing and the oil seal of the present invention;
description of reference numerals:
the crankcase body 1 is provided with a plurality of grooves,
bearing mounting hole 11, outer hole 111, inner hole 112, middle hole 113, chamfer 114,
the tank oil passage 12 is formed in the oil tank,
the bearing 2, the housing 21, the retaining edge 211, the needle roller 22,
the shaft assembly 3, a shaft body 31, a connecting end 3101, a shaft body oil passage 311, an oil inlet 312, an oil outlet 313, a gear 32,
the oil seal (4) is provided with an oil seal,
the number of the spacers 5 is such that,
and an oil passing channel S.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 to 5, the present invention discloses a sealing structure for lubrication oil passages of main and auxiliary shafts of an engine, which comprises a crankcase body 1, a bearing 2 and a shaft assembly 3; the crankcase body 1 is provided with a bearing mounting hole 11 and a case body oil duct 12 communicated with the bearing mounting hole 11; the bearing 2 is arranged in the bearing mounting hole 11; the shaft assembly 3 comprises a shaft body 31 and a gear 32 mounted on the shaft body 31, a shaft body oil passage 311 is formed inside the shaft body 31, an oil inlet 312 communicated with the shaft body oil passage 311 is formed in the end surface of a connecting end 3101 of the shaft body 31, and an oil outlet 313 communicated with the shaft body oil passage 31 is formed in the side wall of the shaft body 31 corresponding to the gear 32; the connection end 3101 of the shaft body 31 is installed in the bearing 2 and the oil inlet 312 of the shaft body 31 is communicated with the tank body oil passage 12. The shaft assembly 3 may be a main shaft assembly or an auxiliary shaft assembly, and the structure in which the gear 32 is mounted on the shaft body 31 is the prior art and will not be described herein again.
The key of the utility model lies in: an oil passage S for communicating the oil duct 12 of the box body and the inner cavity of the bearing 2 is formed between the connecting end 3101 of the shaft body 31 and the inner wall of the bearing mounting hole 11, an oil seal 4 is matched inside the bearing 2, the oil seal 4 is positioned on one side of the bearing 2 far away from the bearing mounting hole 11, and the whole circumference of the oil seal 4 is abutted against the inner wall of the shell 21 of the bearing 2 and the outer wall of the connecting end 3101 of the shaft body 31. In the process that the lubricating oil is conveyed from the box body oil duct 12 to the shaft body oil duct 311, the lubricating oil can enter the inner cavity of the bearing 3 through the oil passage S to lubricate the bearing 3 due to the conveying pressure; and bearing 2 is inside to be cooperated with oil blanket 4, and the oil blanket 4 supports by the shell 21 inner wall of bearing 2 and the link 3101 outer wall of axis body 31 and then prevents to enter into the lubricating oil in bearing 2 and outwards reveals.
As shown in fig. 1 and fig. 2, in the first embodiment of the present invention, the bearing mounting hole 11 of the crankcase body 1 includes an outer hole 111, an inner hole 112, and a middle hole 113 connecting the outer hole 111 and the inner hole 112, the hole diameters of the outer hole 111, the middle hole 113, and the inner hole 112 decrease in sequence, and the inner hole 112 is connected and communicated with the box oil passage 12; the bearing 2 is arranged in the outer hole 111, and the bearing 2 and the outer hole 111 can be in interference fit to prevent the bearing 2 from falling off; the bearing mounting hole 11 is provided with the middle hole 113, which is beneficial to enlarging the flow area of the oil passage S, so that the lubricating oil can enter the inner cavity of the bearing 2 from the oil passage S more easily.
As shown in fig. 3 and 4, in the second embodiment of the present invention, the bearing mounting hole 11 of the crankcase body 1 includes an outer hole 111 and an inner hole 112 connected to each other, the aperture of the outer hole 111 is larger than that of the inner hole 112, a chamfer 114 is formed at the connection between the outer hole 111 and the inner hole 112, and the inner hole 112 is connected to and communicated with the case body oil passage 12; the bearing 2 is arranged in the outer hole 111, and the bearing 2 and the outer hole 111 can be in interference fit to prevent the bearing 2 from falling off; the joint of the outer hole 111 and the inner hole 112 forms a chamfer 114, which is beneficial to enlarging the flow area of the oil passing channel S, so that the lubricating oil can enter the inner cavity of the bearing 2 from the oil passing channel S more easily, and the chamfer 114 can be a chamfer angle, so that the flow area of the oil passing channel S is large.
In the present invention, the bearing 2 may be a needle bearing, and the lubricating oil entering the bearing 2 lubricates the needle roller 22 of the bearing 2. An inward convex blocking edge 211 is formed at the port of the shell 21 of the bearing 2, and the blocking edge 211 is in limit fit with the oil seal 4 to prevent the oil seal 4 from falling off the bearing 2; the oil seal 4 and the bearing 2 form an assembly part for integral assembly of the engine.
The utility model discloses in, can press from both sides between crankcase box 1 and the axle assembly 3 and be equipped with gasket 5, the axis body 31 is put to 5 covers of gasket and seals bearing mounting hole 113, and this gasket 5 also can avoid lubricating oil to leak.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (8)
1. A sealing structure of a lubricating oil passage of a main shaft and an auxiliary shaft of an engine comprises a crankcase body, a bearing and a shaft assembly; the crankcase body is provided with a bearing mounting hole and a case body oil duct communicated with the bearing mounting hole; the bearing is arranged in the bearing mounting hole; the shaft assembly comprises a shaft body and a gear arranged on the shaft body, a shaft body oil duct is formed in the shaft body, an oil inlet communicated with the shaft body oil duct is formed in the end face of the connecting end of the shaft body, and an oil outlet communicated with the shaft body oil duct is formed in the side wall of the shaft body corresponding to the gear; the connecting end of the shaft body is arranged in the bearing, and an oil inlet of the shaft body is communicated with an oil duct of the box body; the method is characterized in that:
the oil seal structure is characterized in that an oil passing channel for communicating an oil duct of the box body and an inner cavity of the bearing is formed between the connecting end of the shaft body and the inner wall of the bearing mounting hole, an oil seal is matched inside the bearing and is positioned on one side, away from the bearing mounting hole, of the bearing, and the oil seal abuts against the inner wall of a shell of the bearing and the outer wall of the connecting end of the shaft body in the whole circumference.
2. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 1, wherein: the bearing is a needle bearing.
3. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 1 or 2, wherein: the port of the shell of the bearing forms an inward convex blocking edge which is in limit fit with the oil seal.
4. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 1, wherein: the bearing mounting hole comprises an outer hole, an inner hole and a middle hole for connecting the outer hole and the inner hole, the aperture of the outer hole, the aperture of the middle hole and the aperture of the inner hole are sequentially decreased, and the inner hole is communicated with the oil duct of the box body;
the bearing is mounted in the outer bore.
5. The sealing structure for the lubricating oil passage of the main shaft and the auxiliary shaft of the engine as claimed in claim 1, wherein: the bearing mounting hole comprises an outer hole and an inner hole which are connected, the aperture of the outer hole is larger than that of the inner hole, a circle of chamfer is formed at the joint of the outer hole and the inner hole, and the inner hole is communicated with the oil duct of the box body;
the bearing is mounted in the outer bore.
6. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 5, wherein: the chamfer is a chamfer angle.
7. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 4 or 5, wherein: the bearing is in interference fit with the outer hole.
8. The sealing structure for the lubricating oil passages of the main shaft and the auxiliary shaft of the engine as claimed in claim 1, wherein: a gasket is clamped between the crankcase body and the shaft assembly, and the shaft body is sleeved with the gasket and seals the bearing mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222342217.3U CN218267173U (en) | 2022-09-02 | 2022-09-02 | Engine main and auxiliary shaft lubricating oil channel sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222342217.3U CN218267173U (en) | 2022-09-02 | 2022-09-02 | Engine main and auxiliary shaft lubricating oil channel sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218267173U true CN218267173U (en) | 2023-01-10 |
Family
ID=84712290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222342217.3U Active CN218267173U (en) | 2022-09-02 | 2022-09-02 | Engine main and auxiliary shaft lubricating oil channel sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218267173U (en) |
-
2022
- 2022-09-02 CN CN202222342217.3U patent/CN218267173U/en active Active
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