CN201496551U - Polytetrafluoroethylene oil seal - Google Patents
Polytetrafluoroethylene oil seal Download PDFInfo
- Publication number
- CN201496551U CN201496551U CN2009203070797U CN200920307079U CN201496551U CN 201496551 U CN201496551 U CN 201496551U CN 2009203070797 U CN2009203070797 U CN 2009203070797U CN 200920307079 U CN200920307079 U CN 200920307079U CN 201496551 U CN201496551 U CN 201496551U
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- CN
- China
- Prior art keywords
- skeleton
- lip
- positioning boss
- teflon seal
- teflon
- 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 provides a polytetrafluoroethylene oil seal, which can solve the problem of the prior art that eclabium, leakage and the like are caused if a shaft is assembled from the side of the oil surface. The utility model has the technical scheme that the polytetrafluoroethylene oil seal comprises a polytetrafluoroethylene sealing main lip, a dust-proof vice lip, a framework and a rubber seal body and is characterized in that the polytetrafluoroethylene sealing main lip comprises a fixed end and a free end, wherein the bending direction of the free end faces the dust-proof vice lip. With the structure, the utility model can avoid eclabium and leakage caused by the fact the shaft is assembled from the side of the oil surface.
Description
Technical field
The utility model relates to a kind of oil sealing, specifically, is the remodeling to existing teflon seal.
Background technique
Because premium properties such as the high-low temperature resistant of polytetrafluoroethylmaterial material, media-resistant, low coefficient of friction, the application that makes teflon seal more and more widely.Teflon seal reaches sealing effect by the backflow line of teflon plate.Referring to Fig. 1, this is existing teflon seal partial enlarged drawing.Wherein, 1, teflon seal master lip, 2, dustproof secondary lip, 3, skeleton, 4, rubbery sealed body.Teflon seal master lip 1 is provided with the backflow line, it is shaped as the horn mouth shape, the big end of horn mouth is a fixed end, small end is a free end, main lip 1 big end is connected as a single entity with the bottom of dustproof secondary lip 2, main lip 1 small end bending direction is towards the pasta side, and deviates from dustproof secondary lip 2, and promptly the free end face of teflon seal master lip 1 deviates from dustproof secondary lip 2.Because teflon plate hardness is higher, amount of deformation is little, teflon seal master lip 1 is about 1mm with the magnitude of interference of axle, like this under the situation for axle assembling in the pasta side direction master lip 1, resistance because of the interference generation can appear in main lip 1, because the installation direction of axle is main lip 1 little extreme direction, it is main lip 1 pressurized direction in addition, thereby can occur making main lip 1 to turn over the lip phenomenon, thus cause inefficacy, cause leaking, use assembly tooling can avoid turning over lip but the increase installation procedure, influence efficiency of assembling, should need reach certain requirement through the training of specific program for the level that technical ability is installed.
How solving the existing structure oil sealing in the fit on above shortcomings, then is the design problem that the utility model faced.
Summary of the invention
The utility model provides a kind of teflon seal, and the axle that it can solve the prior art existence assembles the problems such as turning over the lip leakage that causes from the pasta side.
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 teflon seal, comprise teflon seal master lip, dustproof secondary lip, skeleton and rubbery sealed body, it is characterized in that: described teflon seal master lip comprises fixed end and free end, and described free-ended bending direction is towards dustproof secondary lip.
The described fixed end of described teflon seal master lip and skeleton are by described rubbery sealed body vulcanizing mold consolidation.
Described teflon seal master lip adopts double-sided belt backflow line structure.
Described skeleton sidewall adopts skeleton sidewall positioning boss, and skeleton bottom positioning boss is adopted in described skeleton bottom.
It is block that described skeleton sidewall positioning boss is, and be interrupted the setting that distributes along the outer end circumference; It is block that described skeleton bottom positioning boss is, and be interrupted the setting that distributes along the bottom circumference.
Described skeleton sidewall positioning boss quantitative range is 6～20; Described skeleton bottom positioning boss quantitative range is 4～16.Described skeleton sidewall positioning boss and skeleton bottom positioning boss quantity are according to its quantity difference of product size: skeleton sidewall positioning boss scope is 6～20; Skeleton bottom positioning boss quantitative range is 4～16.
The utlity model has following advantage and good effect:
1, the free end bending direction of teflon master lip is towards dustproof secondary lip, compared with prior art, it is upside-down horn mouth shape, when axle when the pasta side is assembled, axle is installed inwards from the big end of horn mouth, and be to install along the dimension of main lip, the interference resistance reduces, and the lip of having avoided causing that turns over is revealed.The oil sealing of this structure can be removed use from frock is installed in installation process, help improving efficiency of assembling.
2, teflon plate and skeleton make skeleton combine firmly with teflon plate by the rubber mould consolidation, and sealing medium can not revealed by the junction plane of skeleton and teflon plate, and sealing effect improves.
3, teflon master lip adopts the structure of double-sided belt backflow line, the structure of contrast one-side band backflow line, followability that can reinforced TFE master lip.
3, skeleton adopts external diameter formula positioning boss and bottom positioning boss to position, and positioning boss just can guarantee that skeleton is in suitable position, thereby guarantees the concentricity of oil sealing external diameter and seal casinghousing.
4, the utility model also is provided with dustproof secondary lip, avoids soot particle to enter, and avoids entering the wearing and tearing that cause because of foreign matter.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in detail.
Fig. 1 is the oil sealing partial enlarged drawing of prior art;
1, seals main lip; 2, dustproof secondary lip; 3, skeleton; 4, rubbery sealed body;
Fig. 2 is the plan view of the utility model teflon seal;
Fig. 3 is the worm's eye view of Fig. 2;
Fig. 4 is the A-A sectional view among Fig. 2;
Fig. 5 is the B portion enlarged view among Fig. 4;
1, teflon seal master lip; 1-1, free end; 1-2, fixed end; 1-3, backflow line; 2, dustproof secondary lip; 3, skeleton; 4, rubbery sealed body; 5, skeleton sidewall positioning boss; 6, skeleton bottom positioning boss.
Embodiment
Embodiment
Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, oil sealing of the present utility model comprises skeleton 3, attached to the rubbery sealed body 4 on skeleton outer surface and teflon plate and skeleton mating face and the teflon seal lip 1 of double-sided belt backflow line, dust excluder lips 2 is used for locating the sidewall positioning boss 5 and the skeleton bottom positioning boss 6 of skeleton 3.
Described teflon seal master lip 1 comprises fixed end 1-2 and free end 1-1, and the bending direction of described free end 1-1 is towards dustproof secondary lip 2.The big end of teflon seal master lip 1 horn mouth is in the pasta side like this, and promptly fixed end 1-2 is in the pasta side, and the horn mouth small end is towards dustproof secondary lip 2, and promptly free end 1-1 is towards dustproof secondary lip 2.
Axle is interference with the tolerance fit of teflon seal master lip 1, and interference is about 1mm.Axle is installed in the pasta side direction, owing to insert inwards from big end, the interference resistance reduces, and main lip 1 is outside extension in the insertion process, thereby the lip phenomenon can not occur turning over.
The described fixed end 1-2 of described teflon seal master lip 1 and skeleton 3 are by described rubbery sealed body 4 vulcanizing mold consolidations.
Described teflon seal master lip 1 adopts double-sided belt backflow line 1-3 structure.
Described skeleton sidewall is provided with skeleton sidewall positioning boss 5, and described skeleton bottom is provided with skeleton bottom positioning boss 6.
It is block that described skeleton sidewall positioning boss 5 is, and be interrupted the setting that distributes along the outer end circumference; It is block that described skeleton bottom positioning boss 6 is, and be interrupted the setting that distributes along the bottom circumference.
In the present embodiment, described skeleton sidewall positioning boss quantitative range is 12; Described skeleton bottom positioning boss quantitative range is 8.
In the assembling using process of oil sealing, skeleton 2 mainly plays a supportive role in oil sealing.For guaranteeing that when oil sealing assembling is used oil sealing master lip is satisfying in the proper range of seal request with the concentricity of seal shaft, need the concentricity of oil sealing external diameter and seal casinghousing, and the main lip of oil sealing and oil sealing external diameter concentricity are good.The main lip of oil sealing and oil sealing external diameter concentricity can guarantee by mould, and the concentricity of oil sealing external diameter and seal casinghousing just need guarantee by passive skeleton 3 in oil sealing, and positioning boss just can guarantee that skeleton 3 is in suitable position.The oil sealing orientation type of structure different from the past, this infrastructure product adopts skeleton sidewall positioning boss 5 and skeleton bottom positioning boss 6 to locate skeleton, skeleton sidewall positioning boss 5 is used for locating the radial position of skeleton 3 in oil sealing, and skeleton bottom positioning boss 6 is located the lengthwise position of skeleton 3 in oil sealing.
Hence one can see that, adopts the structural type of skeleton sidewall positioning boss 5 and skeleton bottom positioning boss 6, can guarantee the concentricity of oil sealing external diameter and seal casinghousing effectively.
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 (6)
1. teflon seal, comprise teflon seal master lip, dustproof secondary lip, skeleton and rubbery sealed body, it is characterized in that: described teflon seal master lip comprises fixed end and free end, and described free-ended bending direction is towards dustproof secondary lip.
2. according to the described a kind of teflon seal of claim 1, it is characterized in that: the described fixed end of described teflon seal master lip and skeleton are by described rubbery sealed body vulcanizing mold consolidation.
3. according to the described a kind of teflon seal of claim 2, it is characterized in that: described teflon seal master lip adopts double-sided belt backflow line structure.
4. according to claim 1 or 2 or 3 described a kind of teflon seal, it is characterized in that: described skeleton sidewall is provided with skeleton sidewall positioning boss, and described skeleton bottom is provided with skeleton bottom positioning boss.
5. according to the described a kind of teflon seal of claim 4, it is characterized in that: described skeleton sidewall positioning boss is block, and is interrupted the setting that distributes along the outer end circumference; It is block that described skeleton bottom positioning boss is, and be interrupted the setting that distributes along the bottom circumference.
6. according to the described a kind of teflon seal of claim 5, it is characterized in that: described skeleton sidewall positioning boss quantitative range is 6～20; Described skeleton bottom positioning boss quantitative range is 4～16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203070797U CN201496551U (en) | 2009-07-30 | 2009-07-30 | Polytetrafluoroethylene oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203070797U CN201496551U (en) | 2009-07-30 | 2009-07-30 | Polytetrafluoroethylene oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496551U true CN201496551U (en) | 2010-06-02 |
Family
ID=42439758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203070797U Expired - Fee Related CN201496551U (en) | 2009-07-30 | 2009-07-30 | Polytetrafluoroethylene oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173023A (en) * | 2011-01-08 | 2011-09-07 | 山东莱阳市昌誉密封产品有限公司 | One-time compression molding method of modified polytetrafluoroethylene oil seal and special mold thereof |
| CN103502707A (en) * | 2011-08-03 | 2014-01-08 | 科德宝两合公司 | 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 |
-
2009
- 2009-07-30 CN CN2009203070797U patent/CN201496551U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173023A (en) * | 2011-01-08 | 2011-09-07 | 山东莱阳市昌誉密封产品有限公司 | One-time compression molding method of modified polytetrafluoroethylene oil seal and special mold thereof |
| CN103502707A (en) * | 2011-08-03 | 2014-01-08 | 科德宝两合公司 | 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 | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO HILYWILL ADVANCED MATERIALS TECHNOLOGY CO. Free format text: FORMER NAME: QINGDAO HILYWILL SEALING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 266113 Hetao Industrial Zone, Chengyang District, Shandong, Qingdao Patentee after: Qingdao Hilywill Advanced Materials Technology Co., Ltd. Address before: 266113 Hetao Industrial Zone, Chengyang District, Shandong, Qingdao Patentee before: Qingdao Hilywill Sealing Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20130730 |