CN2637829Y - Integrated oil seal - Google Patents
Integrated oil seal Download PDFInfo
- Publication number
- CN2637829Y CN2637829Y CN 03256274 CN03256274U CN2637829Y CN 2637829 Y CN2637829 Y CN 2637829Y CN 03256274 CN03256274 CN 03256274 CN 03256274 U CN03256274 U CN 03256274U CN 2637829 Y CN2637829 Y CN 2637829Y
- Authority
- CN
- China
- Prior art keywords
- main lip
- oil
- lip
- circle
- integrated type
- 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 relates to an integral oil seal in a seal device, containing a rubber body, a frame, a main lip and an assistant lip. The rubber body, the frame and the main lip are an injected integral structure; the main lip is provided with a helical spill groove that has an oil stop point; a liner is arranged in the main lip to protect the helical spill groove and be convenient to assemble a rotation axis. The main lip is pressed and provided with an inner liner. The design overcomes the effect of part processing error on assembly quality, enhances the airproof performance. As the main lip and the rotation axis adopt connecting and contacting a plurality of lips and are provided with oil points, which enhances following performance and holding force between the main lip and the rotation axis, improves the airproof effect, thus not only resolving dynamic seal but also the static seal under static condition and completely avoiding oil leakage.
Description
Technical field
The utility model relates to seal arrangement, especially the oil sealing article construction.
Background technique
In mechanical engineering or other industry, every occasion that exists relative movement need add oiling agent, in order to solve the seal leak problem of running shaft when dynamic or static, the way of employing is between running shaft and housing oil sealing to be set to seal.The oil sealing on the automobile engine crankshaft for example, it is the composite structure oil sealing of having relatively high expectations, the quality of its quality will directly influence sealing effect, its structure is by rubber body, skeleton, main lip and secondary lip are formed, the rubber body of former technology, skeleton, main lip is the pressing type structure, owing to occur foozle unavoidably in the part processing, make the impacting force inequality when press-fiting, some position is pressed very tightly, and some position does not press tightly at all, forms the gap, causes all the seepage phenomenon can occurring when dynamic or static, therefore, it is vital how solving the leakage problems of mechanism when dynamic and static.The Chinese patent notice of authorization number is formed by inside and outside skeleton with attached to the inside and outside Sealing on the skeleton for the disclosed technological scheme of CN2541680Y " combined bidirectional backflow oil sealing ", and at the inner seal liner lip screw type oil-return groove is set.This technology is because seal adopts many lips line to contact with running shaft, so solved the leakage problems of mechanism dynamically the time, but no matter the leakage problems in the time of can't solving static state, fabricated oil seal structure also can't solve oil sealing due to the part error is leakage problems under dynamic or static situation.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective of prior art and proposes integrated type oil sealing a kind of architecture advances, be provided with to end oil drop in the spiral oil-return groove, to solve the leakage problems of mechanism under dynamic and static situation.
Technical problem of the present utility model realizes by following technical proposal:
The integrated type oil sealing, it comprises rubber body, skeleton, main lip and secondary lip, and described main lip is provided with the spiral oil-return groove, it is characterized in that described picture colloid, skeleton, main lip for injection unitary whole formula structure, are provided with only oil drop in the spiral oil-return groove of main lip.
Described main lip spiral oil-return groove only is located at the inboard.
Described main lip spiral oil-return groove is located at inboard and dorsal part.
The described oil drop that ends is provided with the 1-2 point.
Describedly end the 2nd circle or the 3rd circle or the 2nd circle and the 3rd each 1 point of circle that oil drop is located at the spiral oil-return groove, 2 radially symmetrical distributions.
Be provided with liner in the described main lip.
Described rubber body outer round surface is provided with seal groove.
Compared with prior art, the utility model is to rubber body, the linkage structure of skeleton and main lip has been taked injection unitary whole formula structure, overcome the influence of part's machining errors to assembly quality, because adopting many lips line to contact and be provided with running shaft, the main lip of sealing ends oil drop, improved the followability of main lip and running shaft, make main lip the running shaft machining error cause beat the time still have the power of holding tightly, improved sealing effect, not only solved the motive sealing problem under the dynamic situation, satisfy the static seal problem under the static situation simultaneously, thoroughly avoided fluid seepage phenomenon.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the B place enlarged view of Fig. 2.
Fig. 4 is the structural representation behind the installation liner.
Embodiment
Below with reference to above-mentioned accompanying drawing embodiment the utility model is described in detail again.
As Fig. 1-shown in Figure 4, the integrated type oil sealing is applied on the automobile engine crankshaft, and especially the bent axle Rear oil seal is made up of rubber body 1, skeleton 2, main lip 3, secondary lip 6 and liner 10.By prefabricated skeleton of designing requirement and main lip, then in specialized mould, under certain temperature condition, carry out rubber body injection, obtain injection unitary whole formula structure, promptly form the seal groove 7 of circular groove type at the outer round surface of rubber body with mechanism housing contact surface; The main lip inboard 5 of the polytetrafluoroethylmaterial material system of corrosion-resistant, ageing-resistant, high-low temperature resistant, heat resistant oils, promptly form spiral oil-return groove 8 with the running shaft combination surface, when the diameter of axle during greater than 50mm, in order to increase the followability of main lip 3 and running shaft, guarantee to hold power tightly because of the running shaft foozle causes the applying when beating, the back side 4 of main lip also requires to have spiral oil-return groove 8, the spiral oil-return groove contacts with many lips of running shaft line, improves sealing effect.And,, prolonged the working life of oil sealing so even the enough power of holding tightly is arranged, it is minimum that the axle and the abrasion of lip sheet are reduced to because teflon has very low friction factor (≤0.03).
In order to solve the sealing problem that mechanism prevents the fluid seepage when the static state, in spiral oil-return groove 8, be provided with and end oil drop 9, and to end oil drop with 1 be optimum scheme to be located at the 2nd circle oil-return groove.
Be used for preventing dust, leakproof be that the secondary lip 6 of material system is adhesive in omoplate in rubber body one side with the felt, both end faces remain basically stable.
This oil sealing is damaged for fear of main lip spiral oil-return groove in transportation process, also for the ease of the assembling of running shaft, is pressed with liner 10 in main lip, and liner dispatches from the factory with oil sealing as annex, and behind the upward running shaft to be installed, liner promptly is ejected discarded.
Claims (9)
1, a kind of integrated type oil sealing, it comprises rubber body (1), skeleton (2), main lip (3) and secondary lip (6), described main lip is provided with spiral oil-return groove (8), it is characterized in that described picture colloid, skeleton, main lip for injection unitary whole formula structure, are provided with only oil drop (9) in the spiral oil-return groove (8) of main lip.
2, integrated type oil sealing according to claim 1 is characterized in that described main lip spiral oil-return groove (8) only is located at inboard (5).
3, integrated type oil sealing according to claim 1 is characterized in that described main lip spiral oil-return groove (8) is located at inboard (5) and dorsal part (4).
4, integrated type oil sealing according to claim 1 and 2 is characterized in that the described oil drop (9) that ends is provided with the 1-2 point.
5,, it is characterized in that the described oil drop (9) that ends is provided with the 1-2 point according to claim 1 or 3 described integrated type oil sealings.
6, integrated type oil sealing according to claim 4 is characterized in that described the 2nd circle or the 3rd circle or the 2nd circle and the 3rd each 1 point of circle that oil drop (9) is located at spiral oil-return groove (8) that end, and 2 radially are symmetrically distributed.
7, integrated type oil sealing according to claim 5 is characterized in that described the 2nd circle or the 3rd circle or the 2nd circle and the 3rd each 1 point of circle that oil drop (9) is located at spiral oil-return groove (8) that end, and 2 radially are symmetrically distributed.
8, integrated type oil sealing according to claim 1 is characterized in that being provided with in the described main lip (3) liner (10).
9, integrated type oil sealing according to claim 1 is characterized in that described rubber body (1) outer round surface is provided with seal groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256274 CN2637829Y (en) | 2003-08-05 | 2003-08-05 | Integrated oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256274 CN2637829Y (en) | 2003-08-05 | 2003-08-05 | Integrated oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2637829Y true CN2637829Y (en) | 2004-09-01 |
Family
ID=34295377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03256274 Expired - Lifetime CN2637829Y (en) | 2003-08-05 | 2003-08-05 | Integrated oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2637829Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305294A (en) * | 2011-08-20 | 2012-01-04 | 常州朗博汽车零部件有限公司 | Polytetrafluoroethylene lip oil seal formed through compression molding at one time |
-
2003
- 2003-08-05 CN CN 03256274 patent/CN2637829Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305294A (en) * | 2011-08-20 | 2012-01-04 | 常州朗博汽车零部件有限公司 | Polytetrafluoroethylene lip oil seal formed through compression molding at one time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130805 Granted publication date: 20040901 |