CN202719137U - Oil sealing structure for engine - Google Patents
Oil sealing structure for engine Download PDFInfo
- Publication number
- CN202719137U CN202719137U CN 201220292682 CN201220292682U CN202719137U CN 202719137 U CN202719137 U CN 202719137U CN 201220292682 CN201220292682 CN 201220292682 CN 201220292682 U CN201220292682 U CN 201220292682U CN 202719137 U CN202719137 U CN 202719137U
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- engine
- oil
- sealing structure
- oil sealing
- self
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Abstract
The utility model discloses an oil sealing structure for an engine, belonging to the technical field of the engine, which comprises an oil seal body and a self-tightening spiral spring, wherein the self-tightening spiral spring is arranged in the oil seal body. The oil sealing structure for the engine is simple in structure; and the self-tightening spiral spring can be fixedly clamped in the cavity of the oil seal body. The oil sealing structure for the engine is stable in quality and long in service life, can prevent sediment, dust, water and gas from invading into a bearing from the outer part, and can prevent the lubricating oil in the bearing from being leaked. According to the oil sealing structure for the engine, the requirement on oil seal is as follows: the dimension can meet the standard with proper flexibility, so that a shaft can be properly clamped to have a sealing function; and the oil sealing structure for the engine has the advantages of heat resistance, wear resistance, good strength, medium resistance and long service life. According to the oil sealing structure for the engine, a reinforcing skeleton structure is eliminated, the material cost of parts can be reduced, and the production and processing technologies can be simplified. The oil sealing structure for the engine is particularly suitable for occasions which do not need metal skeletons for fixing the oil seal.
Description
Technical field
The utility model relates to technical field of engines, is specifically related to a kind of fluid sealing configuration for motor.
Background technique
Motor be a kind of can being converted into of other form another kind of can machine, normally be converted into mechanical energy to chemical energy.Motor both had been applicable to power generating apparatus, also can refer to comprise the whole machine of power plant.
The oil sealing of motor is the vitals of engine interior.Existing oil seal structure is comprised of three parts: oil seal body, web frame and self-tightening helical spring.Seal is divided into again bottom, waist, cutting edge and sealing lip etc. according to different parts.Usually, the oil sealing under free state, its internal diameter is less than the diameter of axle, namely has certain " magnitude of interference ".Therefore, on oil sealing is packed oil sealing base and axle into after, the helical spring contractile force of the pressure of oil sealing cutting edge and self-tightening produces certain radially tight power to axle, after after a while operation, this pressure can reduce rapidly and even disappear, thereby, add at any time Compensation oil seal self-tightening power of upper spring.
Oil sealing belongs to moving sealing element, and the existence of " critical oil film " is the sufficient and necessary condition of oil sealing sealing, and leak free sealing is unallowed, also is impossible.Because the existence of lubricant film is to guarantee that oil sealing cutting edge realization lubrication friction lock must be obligato, and the existence of lubricant film, so that a certain amount of leakage is inevitable.In use, if occuring within 50-100 hour of initial operating stage, the leakage of trace allows.Along with the lengthening of running time, leakage can stop gradually, and often such oil sealing life-span is long.
The effect of outer piston oil sealing generally is exactly the parts that will need in the transmission part to lubricate and the parts isolation of exerting oneself, and is unlikely to allow oil seepage.Skeleton just as the reinforcing bar of concrete member the inside, plays the effect of reinforcement, and makes oil sealing can keep shape and tension force.Oil sealing plays dustproof effect, prevents extraneous dust, and impurity etc. enter outer piston inside.
Summary of the invention
Primary and foremost purpose of the present utility model just is to overcome the existing deficiency of existing bar linkage structure, thereby a kind of fluid sealing configuration for motor is provided.
Fluid sealing configuration for motor of the present utility model comprises oil seal body and self-tightening helical spring, and described self-tightening helical spring is arranged at oil seal body inside.
Described oil seal body is provided with cavity, and described self-tightening helical spring is arranged at the inside of described cavity.
The cross section of described cavity is square.
The length of the length of side of described cavity is less than the helical spring diameter of described self-tightening.
Described self-tightening helical spring is to adopt high-quality nitrile butadiene rubber and steel plate to be made.
The utility model is simple in structure, and the self-tightening helical spring can be fastened in the cavity inside of oil seal body.This uses novel steady quality, and long service life can prevent silt, dust and aqueous vapor etc. in outer intrusion bearing, and the lubricant oil that can limit in the bearing spills.The utility model is that size should be up to specification to the requirement of oil sealing, and suitable elasticity is arranged, and axle suitably can be blocked, and plays seal action, and have heat-resisting, wear-resisting, intensity is good, media-resistant, the advantage of long service life.The utility model has been cancelled reinforced skeleton structure, can reduce the cost of material of part, has simplified production and processing technology.The utility model not needing to be particularly suitable for the fixedly occasion of oil sealing of metal frame.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.Should be understood that following examples are only for explanation the utility model but not for limiting scope of the present utility model.
As shown in Figure 1, the fluid sealing configuration for motor of the present utility model comprises oil seal body 2 and self-tightening helical spring 1, and described self-tightening helical spring 1 is arranged at oil seal body 2 inside.
Described oil seal body 2 is provided with cavity 21, and described self-tightening helical spring 1 is arranged at the inside of described cavity 21.
The cross section of described cavity 21 is square.
The length of the length of side of described cavity 21 is less than the diameter of described self-tightening helical spring 1.
Described self-tightening helical spring 1 is to adopt nitrile butadiene rubber and steel plate to be made.
The utility model is simple in structure, and self-tightening helical spring 1 can be fastened in cavity 21 inside of oil seal body 2.This uses novel steady quality, and long service life can prevent silt, dust and aqueous vapor etc. in outer intrusion bearing, and the lubricant oil that can limit in the bearing spills.The utility model is that size should be up to specification to the requirement of oil sealing, and suitable elasticity is arranged, and axle suitably can be blocked, and plays seal action, and have heat-resisting, wear-resisting, intensity is good, media-resistant, the advantage of long service life.The utility model has been cancelled reinforced skeleton structure, can reduce the cost of material of part, has simplified production and processing technology.The utility model not needing to be particularly suitable for the fixedly occasion of oil sealing of metal frame.
Claims (4)
1. a fluid sealing configuration that is used for motor is characterized in that comprise oil seal body and self-tightening helical spring, described self-tightening helical spring is arranged at oil seal body inside.
2. the fluid sealing configuration for motor as claimed in claim 1 is characterized in that described oil seal body is provided with cavity, and described self-tightening helical spring is arranged at the inside of described cavity.
3. the fluid sealing configuration for motor as claimed in claim 2 is characterized in that, the cross section of described cavity is square.
4. the fluid sealing configuration for motor as claimed in claim 3 is characterized in that, the length of the length of side of described cavity is less than the helical spring diameter of described self-tightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292682 CN202719137U (en) | 2012-06-20 | 2012-06-20 | Oil sealing structure for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292682 CN202719137U (en) | 2012-06-20 | 2012-06-20 | Oil sealing structure for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719137U true CN202719137U (en) | 2013-02-06 |
Family
ID=47620961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292682 Expired - Lifetime CN202719137U (en) | 2012-06-20 | 2012-06-20 | Oil sealing structure for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561553A (en) * | 2018-06-29 | 2018-09-21 | 四川日机密封件股份有限公司 | A kind of sealing ring |
-
2012
- 2012-06-20 CN CN 201220292682 patent/CN202719137U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561553A (en) * | 2018-06-29 | 2018-09-21 | 四川日机密封件股份有限公司 | A kind of sealing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |