CN201753764U - Reciprocating double-reed dustproof oil seal - Google Patents
Reciprocating double-reed dustproof oil seal Download PDFInfo
- Publication number
- CN201753764U CN201753764U CN2010202808208U CN201020280820U CN201753764U CN 201753764 U CN201753764 U CN 201753764U CN 2010202808208 U CN2010202808208 U CN 2010202808208U CN 201020280820 U CN201020280820 U CN 201020280820U CN 201753764 U CN201753764 U CN 201753764U
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- CN
- China
- Prior art keywords
- lip
- dustproof
- oil seal
- grease proofing
- dust seal
- 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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- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
The utility model provides a reciprocating double-reed dustproof oil seal which can solve the problems of poor sealing effect, low reliability, short service life and the like in the prior art, and adopts the following technical scheme: the reciprocating double-reed dustproof oil seal comprises an upper dustproof lip opening, a lower dustproof lip opening, a skeleton and rubber sealing bodies, wherein springs are respectively arranged on the rubber sealing bodies on the outer surfaces corresponding to the upper dustproof lip opening and the lower dustproof lip opening. The dustproof oil seal adopts novel structure; the holding force of the springs can compensate the lacking of the holding force of rubber to a piston rod in the ageing process, which greatly prolongs the service life of the dustproof oil seal; and experiments show that the sealing life is prolonged once.
Description
Technical field
The utility model relates to a kind of anti-dust seal, specifically, is the architecture advances to existing anti-dust seal.
Background technique
Referring to Fig. 1, existing anti-dust seal is used for motorcycle, automobile shaft drive or vibration damper more, and technical field such as other mechanical axis transmission.The lips anti-dust seal adopts nitrile butadiene rubber to make.When the lips anti-dust seal cooperates with axle, rely on upper and lower lip and axle to fit tightly and realize sealing.Because sealing is to rely on self elasticity of upper and lower lip rubber to realize, and upper and lower lip is taper.After using a period of time, size increases behind the dust seal oil sealing lip ageing of rubber, and it is not tight to fit, the loss of seal effect gradually of oil sealing function, and dust muddy water enters in the oil sealing, causes oil sealing further to wear and tear, the ultimate failure leakage of oil.Thereby reliability is low and working life is short.
Summary of the invention
Problems such as the utility model provides a kind of reciprocal double-spring type anti-dust seal, and it is poor that it can solve the sealing effect of prior art existence, and reliability is low and lack working life.
Goal of the invention of the present utility model prolongs and uses mission in order to improve the dust seal sealability.
In order to reach the purpose that solves the problems of the technologies described above, the technical solution of the utility model is, a kind of reciprocal double-spring type anti-dust seal, comprise the lip that prevents dust, following grease proofing lip, skeleton and rubbery sealed body, it is characterized in that: be equipped with spring on the rubbery sealed body of described dustproof lip and the following pairing outside of grease proofing lip.
In the technical solution of the utility model, also have following technical characteristics: described grease proofing lip down is two, between the upper and lower every setting.
In the technical solution of the utility model, also have following technical characteristics: described lip portion of dustproof lip and following grease proofing lip is convex.
In the technical solution of the utility model, also have following technical characteristics: described anti-dust seal adopts the aging-resistant of anti-ozone nitrile butadiene rubber to make.
The utlity model has following advantage and good effect:
1. dustproof lip has increased spring, and the power of holding tightly of spring can make lip be close on the piston rod, has avoided ageing of rubber and the loss of seal function;
2. grease proofing lip increases to the effect that the two seals lip plays secondary seal down, and sealing effect improves greatly;
3. adopt the aging-resistant of anti-ozone nitrile butadiene rubber, improved reliability and prolonged working life.
Description of drawings
Fig. 1 is the prior art structural drawing;
Fig. 2 is the reciprocal double-spring type anti-dust seal of a utility model structural drawing;
1, upward dustproof lip; 2-1, spring; 2-2, spring; 3-1, first time grease proofing lip; 3-2, second time grease proofing lip; 4, axis body; 5, skeleton; 6, rubbery sealed body.
Embodiment
Referring to Fig. 2, a kind of reciprocal double-spring type anti-dust seal comprises dustproof lip 1, following grease proofing lip, skeleton 5 and rubbery sealed body 6, and described grease proofing lip down is two, i.e. first time grease proofing lip 3-1 and second time grease proofing lip 3-2.Be equipped with spring 2-1,2-2 on the rubbery sealed body 6 of described dustproof lip 1 and the following pairing outside of grease proofing lip.
First time grease proofing lip 3-1 and second time grease proofing lip 3-2 are between the upper and lower every setting, and their interval region is a concave surface.Spring 2-2 is between first time grease proofing lip 3-1 and second time grease proofing lip 3-2, and the position of more close first time grease proofing lip 3-1.The diameter of second time grease proofing lip 3-2 is a bit larger tham the diameter of first time grease proofing lip 3-1.Axis body 4 and anti-dust seal has followability and a good concentricity like this, is beneficial to the axis body running and improves grease proofing sealability.
Described lip portion of dustproof lip 1 and twice grease proofing lip 3-1,3-2 is convex.Lip is the belt protruding structure of a circle like this, and is tight with axis body 4 sealings, good sealing effect.
The whole aging-resistant of the anti-ozone nitrile butadiene rubber that adopts of described anti-dust seal is made.Can obviously improve working life like this.
The utility model anti-dust seal novel structure, the power of holding tightly of spring can compensate rubber disappearance to the power of holding tightly of piston rod in ageing process, have prolonged the working life of dust seal greatly, and experiment shows, prolongs sealing life about one times.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (4)
1. a reciprocal double-spring type anti-dust seal comprises the lip that prevents dust, following grease proofing lip, skeleton and rubbery sealed body, it is characterized in that: be equipped with spring on the rubbery sealed body of described dustproof lip and the following pairing outside of grease proofing lip.
2. a kind of reciprocal double-spring type anti-dust seal according to claim 1 is characterized in that: described grease proofing lip down is two, between the upper and lower every setting.
3. a kind of reciprocal double-spring type anti-dust seal according to claim 2 is characterized in that: described lip portion of dustproof lip and following grease proofing lip is convex.
4. a kind of reciprocal double-spring type anti-dust seal according to claim 3, it is characterized in that: described anti-dust seal adopts the aging-resistant of anti-ozone nitrile butadiene rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808208U CN201753764U (en) | 2010-07-30 | 2010-07-30 | Reciprocating double-reed dustproof oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808208U CN201753764U (en) | 2010-07-30 | 2010-07-30 | Reciprocating double-reed dustproof oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753764U true CN201753764U (en) | 2011-03-02 |
Family
ID=43621496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202808208U Expired - Fee Related CN201753764U (en) | 2010-07-30 | 2010-07-30 | Reciprocating double-reed dustproof oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104111A (en) * | 2014-03-07 | 2016-11-09 | 光洋密封技术株式会社 | Sealing device |
-
2010
- 2010-07-30 CN CN2010202808208U patent/CN201753764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104111A (en) * | 2014-03-07 | 2016-11-09 | 光洋密封技术株式会社 | Sealing device |
| CN106104111B (en) * | 2014-03-07 | 2018-01-30 | 光洋密封技术株式会社 | Sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20160730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |