CN201787078U - Combined rotary-axle seal piece - Google Patents
Combined rotary-axle seal piece Download PDFInfo
- Publication number
- CN201787078U CN201787078U CN2010205391761U CN201020539176U CN201787078U CN 201787078 U CN201787078 U CN 201787078U CN 2010205391761 U CN2010205391761 U CN 2010205391761U CN 201020539176 U CN201020539176 U CN 201020539176U CN 201787078 U CN201787078 U CN 201787078U
- Authority
- CN
- China
- Prior art keywords
- teflon
- lip
- oil
- rubber layer
- metal frame
- 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 - Lifetime
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Abstract
The utility model provides a combined rotary-axle seal piece, comprising a metal frame, a rubber body on the metal frame and bonded with a Teflon lip, a rubber layer in 0.2-0.5mm on the surface of the Teflon lip, a left-handed rotation line or right-handed rotation line or bidirectional oil-return line vulcanized on the rubber layer. The combined rotary-axle seal piece improves the problem that the processed oil-return line does not ensures the depth on the Teflon material and it is difficult to answer the low-speed environment and especially double-direction rotation can not be answered, therefore the service life of the oil seal is effectively increased and simultaneously the Teflon lip can be applied on the double-direction rotation environment.
Description
Technical field
The utility model relates to the oil sealing parts at positions such as automobile gearbox output shaft, differential mechanism, semiaxis, specifically is a kind of combined rotation shaft seal.
Background technique
At present, in automobile industry, the sealing common oil seal structure that is used for positions such as automobile gearbox output shaft, differential mechanism, semiaxis has two kinds: a kind of is fluid dynamic type rubber lip ring structure, and another kind is a teflon lip seal coil structures; Rubber oil sea at high temperature, run up, the operating temperature of oil seal lip is more and more higher, causes the oil at lip position to produce cracking, form a kind of by-product of acidity, make the rubber lip surface produce one deck paint film or carbon distribution, and then cause the lip cracking, cause the sealing failure.
The teflon lip-type packing is compared with rubber seal and is had many good qualities, as temperature tolerance good (200～260 ℃), wear-resisting, withstand voltage, corrosion-resistant etc., so a lot of seal maker also is used in the passenger car motor with the former teflon seal that is used for the forward and backward sealing of diesel engine bent axle; But it is because elasticity is relatively poor, must lean on the lip inwall reverse thread groove inclined-plane effect and produce the active force of a sealing medium in motor, just can seal fluid; If thread groove is too shallow, easily by abrasive dust and greasy stifled flat, function runs out of steam; Thread groove is too dark, in static state, fluid can be from groove seepage.Present oil drive back thread with the compacting and car, but using effect is all bad.
Summary of the invention
The utility model purpose is to propose a kind of easy oil return, possesses the good wear-corrosion resistance of teflon simultaneously, improves a kind of combined rotation shaft seal of the sealing of oil sealing.
The technical solution of the utility model is a kind of combined rotation shaft seal for this reason, comprise Back Word type metal frame, metal frame is provided with rubber body, and be bonded as one by rubber body and teflon lip sheet, it is characterized in that: on teflon lip sheet surface, be provided with rubber layer, and sulfuration has oil drive back thread on rubber layer.
Improvement to such scheme is: the thickness of described rubber layer is 0.2～0.5mm.
Improvement to such scheme is: described oil drive back thread is left-handed line or dextrorotation line or two-way oil drive back thread.
Beneficial effect:
The lip of the utility model oil sealing adopts teflon, have temperature tolerance good (200～260 ℃), advantage such as wear-resisting, withstand voltage, corrosion-resistant, the surface sulfuration of lip has oil drive back thread, improve the oil drive back thread of processing on the polytetrafluoroethylmaterial material and be difficult for guaranteeing the degree of depth, especially can't tackle the problem of two-way rotation, thereby effectively raise the working life of oil sealing, teflon lip oil sealing can be applied under the environment of two-way rotation.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a local enlarged diagram of the present utility model.
1 is teflon lip sheet, the 2nd among the figure, rubber body, the 3rd, metal frame, the 4th, oil drive back thread.
Embodiment:
The utility model as shown in Figure 1 and Figure 2.
1, earlier 3 three ones of teflon lip sheets 1, rubber body 2, metal frame are become an integral body with the mould molded vulcanization, adhere to the rubber layer of 0.2～0.5mm on teflon lip sheet 1 surface of this moment, and vulcanize the oil drive back thread that specific direction.
2, typing: at 100 ℃, the teflon lip sheet with the plane under 1 hour the process conditions is shaped as bell mouth shape by the typing frock.
Teflon lip sheet is mainly used in as main lip under the environment of higher rotation speed, and is bad to the performance of the application under the low speed rotation environment.Through increasing the rubber layer of 0.2-0.5mm at lip, and on rubber layer, vulcanize and two-way oil drive back thread, can greatly improve the using effect under the working environment of low speed environments and two-way rotation.
Claims (3)
1. combined rotation shaft seal, comprise metal frame, metal frame is provided with rubber body, and is bonded as one by rubber body and teflon lip sheet, it is characterized in that: on teflon lip sheet surface, be provided with rubber layer, and sulfuration has oil drive back thread on rubber layer.
2. a kind of combined rotation shaft seal according to claim 1 is characterized in that: the thickness of described rubber layer is 0.2～0.5mm.
3. a kind of combined rotation shaft seal according to claim 1 and 2 is characterized in that: described oil drive back thread is left-handed line or dextrorotation line or two-way oil drive back thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205391761U CN201787078U (en) | 2010-09-18 | 2010-09-18 | Combined rotary-axle seal piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205391761U CN201787078U (en) | 2010-09-18 | 2010-09-18 | Combined rotary-axle seal piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787078U true CN201787078U (en) | 2011-04-06 |
Family
ID=43819041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205391761U Expired - Lifetime CN201787078U (en) | 2010-09-18 | 2010-09-18 | Combined rotary-axle seal piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728449A (en) * | 2015-03-26 | 2015-06-24 | 山东东都新材料科技有限公司 | Chinese-doughnut-shaped oil-back line oil seal |
| CN110529599A (en) * | 2019-08-16 | 2019-12-03 | 广东亿达汽车密封件股份有限公司 | Lip-type seal part for rotary shaft |
-
2010
- 2010-09-18 CN CN2010205391761U patent/CN201787078U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728449A (en) * | 2015-03-26 | 2015-06-24 | 山东东都新材料科技有限公司 | Chinese-doughnut-shaped oil-back line oil seal |
| CN110529599A (en) * | 2019-08-16 | 2019-12-03 | 广东亿达汽车密封件股份有限公司 | Lip-type seal part for rotary shaft |
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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 |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |