CN2521446Y - Combined oil seal - Google Patents
Combined oil seal Download PDFInfo
- Publication number
- CN2521446Y CN2521446Y CN02212590U CN02212590U CN2521446Y CN 2521446 Y CN2521446 Y CN 2521446Y CN 02212590 U CN02212590 U CN 02212590U CN 02212590 U CN02212590 U CN 02212590U CN 2521446 Y CN2521446 Y CN 2521446Y
- Authority
- CN
- China
- Prior art keywords
- lip
- sealing lip
- sealing
- oil seal
- outer skeleton
- 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)
Abstract
The utility model mainly relates to an oil sealing. The utility model comprises an outer framework, a sealing lip and a dust-proof lip which is linked with an outer sealing body into one under the lower portion of the sealing lip. The utility model is characterized in that an inner framework is disposed in the outer framework, a flared sealing lip made of antifriction material is supported by the outer framework and is fixed at the upper end of the outer framework through the inner framework, and the flared inner surface of the sealing lip is contacted with a rotating shaft. The utility model changes the sealing lip from the line contact of the existing technique to multi-line contact, and the polyfluortetraethylene and the like antifriction material are employed in the manufacture, thereby promoting the abrasion-resistance of the oil sealing and the service life. A lateral lip is disposed on the outer side of the dust-proof lip, which largely increases the dust-proof property of the oil sealing, thereby prolonging the service life of the oil sealing with a preferable effect.
Description
Affiliated field the utility model belongs to seal, relates generally to oil sealing.
The running shaft combination oil seal of the motor car engine of background technique prior art because its sealing lip uses rubber material, adopts the line contact, and therefore, its wear resistance is relatively poor, and working life is generally below 100,000 kilometers; Temperature resistant range is narrower, and its Applicable temperature scope is-30～160 ℃, has limited its Applicable scope.
Summary of the invention goal of the invention of the present utility model is that wear resistance is good, the combination oil seal of broad application temperature range.
Combination oil seal of the present utility model, comprise outer skeleton, sealing lip and the dust excluder lips that is positioned at the sealing lip bottom and is connected as a single entity with the external sealed body, it is characterized in that in the outer skeleton inner frame being set, the tubaeform sealing lip that high-abrasive material is made, by outer skeleton support and fixing by inner frame and outer skeleton upper end, its trumpet shaped inner surface contacts with running shaft.
Sealing lip trumpet shaped inner surface of the present utility model is provided with oil drive back thread, forms multi-thread the contact with running shaft.At dust excluder lips arranged outside side lip, side lip and external sealed body are connected as a single entity.The external sealed body can be designed to maze-type structure with the surface that the seat hole contacts, and reduces the requirement to seat hole machining accuracy and assembly precision.As adopting outer skeleton to contact with the seat internal surface of hole, then outer skeleton is the tubular smooth surface with the surface that the seat hole contacts, and adopts interference fit.Sealing lip and inner frame can be fixed by outer skeleton upper edge flange.
The utility model contacts the prior art sealing lip and changes multi-thread contact into the line of running shaft, help lubricating, improved the sealing lip working environment, and adopt high-abrasive material (as teflon etc.) to make, the overall wear resistance and the working life of oil sealing have been improved, make the oil sealing Applicable temperature can reach-100～300 ℃, the life-span can reach more than 150,000 kilometers, has enlarged the Applicable scope of oil sealing.In addition, enter oil sealing, increase the side lip again, improved the oil sealing anti-dust performance greatly, played effect preferably working life improving oil sealing in the dust excluder lips outside in order better to prevent muddy water, dust etc.
The utility model is described in further detail below in conjunction with accompanying drawing for description of drawings:
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the utility model embodiment 2 a structural representation;
Fig. 3 is the utility model embodiment 3 a structural representation;
Fig. 4 is the utility model embodiment 4 a structural representation.
Among embodiment Fig. 1, external sealed body 2 is a maze-type structure with the contact surface in seat hole 1, helps sealing, and has reduced the requirement on machining accuracy to the seat internal surface of hole, is easy to assembling.The surface of skeleton 3 is combined as a whole by the vulcanization of rubber and external sealed body 2 outside; With the tubaeform sealing lip 4 that polytetrafluoroethylmaterial material or other high-abrasive material are made, by the rubber in the outer skeleton 3, fixing by turning over the back under the upper edge of inner frame 5 by outer skeleton 3, its trumpet shaped inner surface remains with running shaft 6 and contacts; Owing to adopt high-abrasive material and increase Line of contact, improved the oil-containing ability of sealing lip, help lubricating, improved the sealing lip working environment, so improved the wear resistance and the heat resistance of oil sealing.Dust excluder lips 7 is structure as a whole with external sealed body 2, keeps and the contacting of running shaft 6 in that sealing lip is peripheral, prevents that dirts such as muddy water, dust from entering in the oil sealing.
Among Fig. 2, increase the side lip 8 that is connected as a single entity with external sealed body 2 in the outside of dust excluder lips 7, its end face keeps contacting with baffle plate 9, can prevent better that dirts such as muddy water, dust from entering in the oil sealing.All the other are with embodiment 1.
Among Fig. 3, according to the requirement on machining accuracy and the assembly precision requirement in seat hole 1, externally the outer surface of skeleton 3 carries out grinding, makes itself and seat hole 1 form interference fit, and this structure oil sealing is applicable to the occasion that assembly precision is had relatively high expectations.All the other are with embodiment 1.
Among Fig. 4, on embodiment 3 basis, increase the side lip 8 that is connected as a single entity with external sealed body 2 in the outside of dust excluder lips 7, and its end face is kept and the contacting of baffle plate 9, prevent that better dirts such as muddy water, dust from entering in the oil sealing, the working environment of maintenance sealing lip.All the other are with embodiment 3.
Claims (6)
1, a kind of combination oil seal, comprise outer skeleton, sealing lip and the dust excluder lips that is positioned at the sealing lip bottom and is connected as a single entity with the external sealed body, it is characterized in that in the outer skeleton inner frame being set, the tubaeform sealing lip that high-abrasive material is made, by outer skeleton support and fixing by inner frame and outer skeleton upper end, its trumpet shaped inner surface contacts with running shaft.
2, combination oil seal according to claim 1 is characterized in that the trumpet shaped inner surface of sealing lip is provided with oil drive back thread, and it forms multi-thread the contact with running shaft.
3, combination oil seal according to claim 1 is characterized in that dust excluder lips arranged outside side lip, and side lip and external sealed body are connected as a single entity.
4, combination oil seal according to claim 1 is characterized in that the external sealed body is a maze-type structure with the surface that the seat hole contacts.
5, combination oil seal according to claim 1 is characterized in that outer skeleton is the tubular smooth surface with the surface that the seat hole contacts, and adopts interference fit.
6, combination oil seal according to claim 1 is characterized in that outer skeleton upper edge flange fixedly inner frame and sealing lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02212590U CN2521446Y (en) | 2002-01-30 | 2002-01-30 | Combined oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02212590U CN2521446Y (en) | 2002-01-30 | 2002-01-30 | Combined oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2521446Y true CN2521446Y (en) | 2002-11-20 |
Family
ID=33692240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02212590U Expired - Fee Related CN2521446Y (en) | 2002-01-30 | 2002-01-30 | Combined oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2521446Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998836A (en) * | 2011-12-21 | 2014-08-20 | Nok株式会社 | Engine rear seal |
| CN107339436A (en) * | 2017-08-11 | 2017-11-10 | 徐州华通浮动油封科技有限公司 | A kind of combination oil seal |
| CN113137476A (en) * | 2021-02-07 | 2021-07-20 | 青岛众力诚达智能科技有限公司 | Sealing structure loaded by reverse lip sealing tape pressing sealing medium |
| EP3842671B1 (en) * | 2019-12-23 | 2024-05-15 | KACO GmbH + Co. KG | Shaft seal, in particular radial shaft seal, with at least one sealing element |
-
2002
- 2002-01-30 CN CN02212590U patent/CN2521446Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998836A (en) * | 2011-12-21 | 2014-08-20 | Nok株式会社 | Engine rear seal |
| CN103998836B (en) * | 2011-12-21 | 2016-03-30 | Nok株式会社 | Sealing after motor |
| US9638329B2 (en) | 2011-12-21 | 2017-05-02 | Nok Corporation | Engine rear seal |
| CN107339436A (en) * | 2017-08-11 | 2017-11-10 | 徐州华通浮动油封科技有限公司 | A kind of combination oil seal |
| EP3842671B1 (en) * | 2019-12-23 | 2024-05-15 | KACO GmbH + Co. KG | Shaft seal, in particular radial shaft seal, with at least one sealing element |
| CN113137476A (en) * | 2021-02-07 | 2021-07-20 | 青岛众力诚达智能科技有限公司 | Sealing structure loaded by reverse lip sealing tape pressing sealing medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |