CN202937811U - Crank axle sealing structure of engine crankcase - Google Patents
Crank axle sealing structure of engine crankcase Download PDFInfo
- Publication number
- CN202937811U CN202937811U CN 201220595293 CN201220595293U CN202937811U CN 202937811 U CN202937811 U CN 202937811U CN 201220595293 CN201220595293 CN 201220595293 CN 201220595293 U CN201220595293 U CN 201220595293U CN 202937811 U CN202937811 U CN 202937811U
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- CN
- China
- Prior art keywords
- oil
- oil sealing
- inner ring
- transmission section
- sealing
- 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
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Abstract
The utility model discloses a crank axle sealing structure of an engine crankcase. The crank axle sealing structure comprises an axle cover installed on the side surface of a crankcase, and a crank axle installed in the inner hole of an axle cover step, wherein the crank axle comprises a transmission section and a support section, a concave oil slot is arranged on the step end surface of a transition joint of the transmission section and the support section, the transmission section is provided with an oil sealing, the outer ring of the oil sealing is matched with the axle cover inner hole, the inner ring of the oil sealing is matched with the transmission section, the inner ring surface of the oil sealing is provided with an inner spiral slot matched with the surface of the transmission section, the inner ring of the oil sealing is matched and clamped into the concave oil slot, an oil returning chute for collecting engine oil turned back by the inner spiral slot is arranged at the bottom of the inner ring of the oil sealing, and oil returning holes are arranged on the inner ring of the oil sealing at the bottom end of the oil returning chute. Engine oil is effectively prevented from overflowing along the crank axle due to the tight fitness of the inner ring of the oil sealing and the concave oil slot on the crank axle as well as the inner spiral slot matched with the surface of the transmission section and arranged on the inner ring surface of the oil sealing.
Description
Technical field
The utility model relates to engine manufacturing technology field, especially a kind of crankshaft seal structure of engine crankcase.
Background technique
The crankcase of motor is being born the transmission of engine power.Present crankshaft structure ubiquity oil leakage phenomenon, and the machine oil that is thrown away by transmitting assemblies rotation very easily along the outside seepage of the axis body of bent axle, causes low on fuel in crankcase and affects lubrication effect, and seepage machine oil has outside also produced pollution to environment simultaneously.
The model utility content
The technical problems to be solved in the utility model is: overcome the deficiency in prior art, a kind of crankshaft seal structure that can effectively prevent the engine crankcase that the crankcase inner engine oil exosmoses along bent axle is provided.
the technological scheme that its technical problem that solves the utility model adopts is: a kind of crankshaft seal structure of engine crankcase, be used for preventing that the crankcase inner engine oil from exosmosing along bent axle, comprise the shaft-cup that is arranged on the crankcase side, be arranged on the bent axle in the shaft-cup inner bore of step, bent axle has transmission section and supporting section, the step end face of described transmission section and supporting section transition joint offers the indent oil groove, on the transmission section, oil sealing is installed, the oil sealing outer ring coordinates with the shaft-cup endoporus, the oil sealing inner ring coordinates with the transmission section, oil sealing inner ring mask has the inner spiral groove of fitting with the transmission section surface, the oil sealing inner ring is fitted and is snapped in the indent oil groove, the bottom that is positioned at the oil sealing inner ring is provided with collects the oil return skewed slot that inner spiral groove keeps off back machine oil, be positioned on the oil sealing inner ring of oil return skewed slot bottom and offer spill port.
For guaranteeing that machine oil more easily flows back in crankcase, has the gap of refluxing for machine oil between the step side of described oil sealing cycle surface and shaft-cup endoporus.
The beneficial effects of the utility model are: the utility model is by fitting tightly between the indent oil groove on oil sealing inner ring protruding terminus and bent axle, effectively stopped excessive along bent axle of machine oil, the oil sealing inner ring has the inner spiral groove of fitting with the transmission section surface simultaneously, can prevent that machine oil from flowing out with crankshaft rotating, thereby prevented the generation of crankcase inner engine oil along the bent axle exosmose, guaranteed the lubrication effect of transmission part in crankcase, the pollution of machine oil to the environment generation also prevented from exosmosing.
Description of drawings
Below in conjunction with drawings and embodiments, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
1. shaft-cup 2. bent axle 21. transmission section 22. supporting section 23. indent oil groove 3. oil sealing 31. oil return skewed slot 32. spill ports in figure
Embodiment
By reference to the accompanying drawings the utility model is further described now.These accompanying drawings only illustrate basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
The crankshaft seal structure of a kind of engine crankcase as shown in Figure 1 is used for preventing that the crankcase inner engine oil from exosmosing along bent axle.comprise the shaft-cup 1 that is arranged on the crankcase side, be arranged on the bent axle 2 in shaft-cup 1 inner bore of step, bent axle 2 has transmission section 21 and supporting section 22, described transmission section 21 offers indent oil groove 23 with the step end face of the joint of supporting section 22, these indent oil groove 23 finished surfaces are smooth, oil sealing 3 outer rings coordinate with shaft-cup 1 endoporus, oil sealing 3 inner ring masks have the inner spiral groove with the 21 surface applyings of transmission section, inner spiral groove can be with in case stop machine oil rotates with bent axle 2 flows out, the protruding terminus of oil sealing 3 inner rings is fitted and is snapped in indent oil groove 23, excessive along bent axle 2 in order to block machine oil, the bottom that is positioned at oil sealing 3 inner rings is provided with collects the oil return skewed slot 31 that inner spiral groove keeps off back machine oil, be positioned on oil sealing 3 inner rings of oil return skewed slot 31 bottoms and offer spill port 32, the machine oil that inner spiral groove kept off back enters the rear smooth backflow of spill port 32 along 31 tricklings of oil return skewed slot and advances in crankcase.
Maintain the gap of certain distance between the step side of described oil sealing 3 cycle surfaces and shaft-cup 1 endoporus, this gap can guarantee that machine oil more easily flows back in crankcase.
The utility model is by fitting tightly between the indent oil groove 23 on oil sealing 3 inner rings and bent axle 2, effectively stopped excessive along bent axle 2 of machine oil, oil sealing 3 inner rings have and the surperficial inner spiral groove of fitting of transmission section 21 simultaneously, can prevent that machine oil from flowing out with bent axle 2 rotations, thereby effectively prevented the generation of crankcase inner engine oil along bent axle 2 exosmoses, guaranteed the lubrication effect of transmission part in crankcase, the pollution of machine oil to the environment generation also prevented from exosmosing.
Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow person skilled in the art scholar can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (2)
1. the crankshaft seal structure of an engine crankcase, be used for preventing that the crankcase inner engine oil from exosmosing along bent axle, comprise the shaft-cup (1) that is arranged on the crankcase side, be arranged on the bent axle (2) in shaft-cup (1) inner bore of step, bent axle (2) has transmission section (21) and supporting section (22), it is characterized in that: described transmission section (21) offers indent oil groove (23) with the step end face of supporting section (22) transition joint, oil sealing (3) is installed on transmission section (21), oil sealing (3) outer ring coordinates with shaft-cup (1) endoporus, oil sealing (3) inner ring coordinates with transmission section (21), oil sealing (3) inner ring mask has the inner spiral groove with transmission section (21) surface applying, oil sealing (3) inner ring is fitted and is snapped in indent oil groove (23), the bottom that is positioned at oil sealing (3) inner ring is provided with collects the oil return skewed slot (31) that inner spiral groove keeps off back machine oil, be positioned on oil sealing (3) inner ring of oil return skewed slot (31) bottom and offer spill port (32).
2. the crankshaft seal structure of engine crankcase according to claim 1, is characterized in that: have the gap of refluxing for machine oil between the step side of described oil sealing (3) cycle surface and shaft-cup (1) endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595293 CN202937811U (en) | 2012-11-13 | 2012-11-13 | Crank axle sealing structure of engine crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595293 CN202937811U (en) | 2012-11-13 | 2012-11-13 | Crank axle sealing structure of engine crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937811U true CN202937811U (en) | 2013-05-15 |
Family
ID=48322049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595293 Expired - Fee Related CN202937811U (en) | 2012-11-13 | 2012-11-13 | Crank axle sealing structure of engine crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604730A (en) * | 2014-11-06 | 2016-05-25 | 铃木株式会社 | Internal combustion engine and seal box for internal combustion engine |
-
2012
- 2012-11-13 CN CN 201220595293 patent/CN202937811U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604730A (en) * | 2014-11-06 | 2016-05-25 | 铃木株式会社 | Internal combustion engine and seal box for internal combustion engine |
| CN105604730B (en) * | 2014-11-06 | 2018-06-08 | 铃木株式会社 | The seal box of internal combustion engine and internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151218 Address after: 213176 Chang FA Industrial Park, Wujin Road, Wujin District, Jiangsu, Changzhou Patentee after: Jiangsu Changfa Agricultural Equipment Co., Ltd. Address before: 213176 Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: Changfa Power Machinery Co., Ltd., Changzhou City |
|
| 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: 20130515 Termination date: 20161113 |