CN205154917U - A seal structure for bearing - Google Patents
A seal structure for bearing Download PDFInfo
- Publication number
- CN205154917U CN205154917U CN201520803596.9U CN201520803596U CN205154917U CN 205154917 U CN205154917 U CN 205154917U CN 201520803596 U CN201520803596 U CN 201520803596U CN 205154917 U CN205154917 U CN 205154917U
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- CN
- China
- Prior art keywords
- extension part
- sealing
- skeleton
- bearing
- sealing lip
- 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 discloses a seal structure for bearing, include be used for fixed to bearing inner race the skeleton and attached to the elastic sealing element on the skeleton, elastic sealing element has the first seal lip for space between seal skeleton and the bearing inner race, this first seal lip upwards is being the heliciform week, can increase the distance inside impurity, the filth entering bearing like this to make things convenient for impurity, filth to be thrown away under the effect of centrifugal force, therefore can realize better sealed effect.
Description
Technical field
The utility model relates to technical field of bearings, particularly relates to the sealing configuration for bearing.
Background technique
Existing bearing is generally all provided with sealing configuration, the impurity of Bearing outer can be prevented on the one hand like this, dirt enters Bearing inner, the oil leakage of Bearing inner can be prevented on the other hand, finally realize bearing to run in the environment of clean, low friction, extend the working life of bearing as far as possible.Sealing configuration in existing design generally comprises skeleton and the elastic packing lip integrally formed with skeleton, in order to reach better sealing effect, sealing lip arranges multiple tracks usually, the profile roughly structure in concentric circle of multiple sealing lips, and the distance at adjacent seals lip interval in axis or radial direction is less.Like this, after foreign matter, dirt break through first sealing lip, will accumulate in down one sealing lip, there is the risk broken through by each in multiple sealing lips, thus likely causes the early failue of bearing.
Therefore, need to provide a kind of sealing configuration of improvement to solve the problem.
Model utility content
The problem that the utility model solves is to provide a kind of sealing configuration with better sealing effect.
For solving the problem, the utility model adopts following technological scheme: a kind of sealing configuration for bearing, comprise the skeleton being fixed to bearing outer ring and the elastomer seal be attached on skeleton, described elastomer seal has the first sealing lip sealing space between described skeleton and bearing inner race, and this first sealing lip in the circumferential in the shape of a spiral.
Further, described first sealing lip forms some lip portion segments on the longitudinal profile of described sealing configuration, and this some lip portion segments tilts to extend in the same direction.
Further, described elastomer seal also comprises the second sealing lip, and described second sealing lip is positioned at the axially inner side of described first sealing lip.
For solving the problem, the utility model adopts another technological scheme following: a kind of sealing configuration for bearing, comprise being fixed to the first skeleton of bearing outer ring and the second skeleton in order to be fixed to bearing inner race, described first skeleton comprises the first radial extension part, described second skeleton comprises the second radial extension part being positioned at the described first axial outside of radial extension part, seal space is formed between this second radial extension part and described first radial extension part, described first skeleton is attached with elastomer seal, this elastomer seal comprises and is configured on described first radial extension part and extends into the first sealing lip of described seal space, it is characterized in that, described first sealing lip in the circumferential in the shape of a spiral.
Further, described first sealing lip forms some lip portion segments on the longitudinal profile of described sealing configuration, and this some lip portion segments tilts to extend in the same direction.
Further, described elastomer seal also comprises the second sealing lip on the free terminal being configured in described first radial extension part.
Further, described first skeleton also to comprise from described first radial extension part near one end of bearing inner race towards the first axial extension part that Bearing inner extends, and described elastomer seal also comprises the second sealing lip be configured on described first axial extension part.
Further, described second sealing lip in the circumferential in the shape of a spiral.
Further, described first skeleton also to comprise from described first radial extension part near one end of bearing outer ring towards the second axial extension part that Bearing outer extends, and forms the opening that described seal space is communicated with Bearing outer between described second radial extension part with described second axial extension part.
Further, described second skeleton also comprises and is positioned at described first axial extension part radially inner side and the 3rd axial extension part extended with described first axial extension part in the same direction, the space between the described second sealing lip described first axial extension part of sealing and described 3rd axial extension part.
Compared with prior art, the utility model has the following advantages: sealing lip is set to helical, impurity can be increased, distance that dirt enters Bearing inner, and facilitate impurity, dirt is thrown out of under the influence of centrifugal force, thus can realize better sealing effect.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing of the utility model first mode of execution sealing configuration;
Fig. 2 is the three-dimensional side view of the first skeleton and the elastomer seal thereon that is shaped in Fig. 1;
Fig. 3 is the longitudinal sectional drawing of the utility model second mode of execution sealing configuration;
Fig. 4 is the longitudinal sectional drawing of the utility model the 3rd mode of execution sealing configuration.
Embodiment
As depicted in figs. 1 and 2, the utility model first mode of execution sealing configuration comprises the first skeleton 3 being fixed to bearing outer ring 1 and the second skeleton 4 being fixed to bearing inner race 2.The first axial extension part 32 and the second axial extension part 33 that first skeleton 3 comprises the first radial extension part 31, extends in the opposite direction from the two ends of the first radial extension part 31 respectively.The 3rd axial extension part 42 that second skeleton 4 comprises the second radial extension part 41 and extends near one end of bearing inner race 2 from the second radial extension part 41.Particularly, the first skeleton 3 is fixed to bearing outer ring 1 by the second axial extension part 33, and the second skeleton 4 is fixed to bearing inner race 2 by the 3rd axial extension part 42.Second radial extension part 41 is positioned at the axially outside of the first radial extension part 31 and keeps at a certain distance away with the first radial extension part 31, first axial extension part 32 and first axial extension part 32 identical with the bearing of trend of the 3rd axial extension part 42 is positioned at the radial outside of the 3rd axial extension part 42, thus also keep at a certain distance away between the first axial extension part 32 and the 3rd axial extension part 42, between the first skeleton 3 and the second skeleton 4, form the seal space 7 of L shape like this.The opening a that seal space 7 is communicated with Bearing outer is formed between second radial extension part 41 with the second axial extension part 33.
First skeleton 3 is formed with the elastomer seal extending into seal space 7, comprises the first sealing lip 5 be attached on the first radial extension part 31 and the second sealing lip 6 be attached on the first axial extension part 32 particularly.First sealing lip 5 mainly in order to prevent the impurity of Bearing outer, dirt enters Bearing inner, first sealing lip 5 in a circumferential direction in the shape of a spiral, thus on the longitudinal profile of sealing configuration, forming some lip portion segments 51, some lip portion segments 51 tilt extend and formed to contact with the second radial extension part 41 and seal in the same direction.Spiral helicine first sealing lip 5 can form spiral helicine passage b, after foreign matter, dirt enter seal space 7 by opening a, spiral helicine passage b will be led to further, because passage b is long, impurity, dirt be not easy to enter Bearing inner, and the centrifugal force produced in bearing rotary process by making the impurity of most of inlet passage b, dirt is thrown out of, remaining fraction impurity, dirt also can in passage b by sluggish so that be finally trapped in passage b.
Second sealing lip 6 is mainly in order to prevent the oil leakage of Bearing inner, and with the first sealing lip 5 similar, the second sealing lip 6 in a circumferential direction also in the shape of a spiral and form spiral helicine passage c.Second sealing lip 6 is finally formed to contact with the 3rd axial extension part 42 and seals.
Certainly, in the present embodiment, also can omit the second axial extension part 33 and the 3rd axial extension part 42, such opening a will between bearing outer ring 1 and the second radial extension part 41, and the second sealing lip 6 will be formed to contact with bearing inner race 2 and seal.
As shown in Figure 3, the utility model second mode of execution sealing configuration comprises the skeleton 3 ' and the elastomer seal 8 integrally formed with skeleton 3 ' that are fixed to bearing outer ring 1, this elastomer seal 8 has the first sealing lip 5 ' and the second sealing lip 6 ' that are formed with bearing inner race 2 and contact and seal, wherein, first sealing lip 5 ' is positioned at the axially outside of the second sealing lip 6 ', and the first sealing lip 5 ' is configured in the circumferential in the shape of a spiral, thus some lip portion segments 51 ' are formed on the section of sealing configuration, this some lip portion segments 51 ' tilts to extend outside bearing.Second sealing lip 6 ' is existing conventional seals lip, is only provided with in the present embodiment together and this second sealing lip 6 ' tilts to extend towards Bearing inner, thus prevents oil leak.
As shown in Figure 4, the utility model the 3rd mode of execution sealing configuration is compared with the first mode of execution sealing configuration, its difference is, first skeleton 3 only has the first radial extension part 31 and the second axial extension part 33, second sealing lip 6 ' is for existing conventional seals lip and be attached to the free terminal of the first radial extension part 31, only be provided with in the present embodiment together and this second sealing lip 6 ' formed to contact with the 3rd axial extension part 42 and seal, thus prevent oil leak.
The utility model sealing lip is set to helical, can increase impurity, distance that dirt enters Bearing inner, and facilitate impurity, dirt is thrown out of helical duct under the influence of centrifugal force.Therefore better sealing effect can be realized.
Although the utility model is only described with regard to some exemplary embodiment, these descriptions should only exemplarily and not be construed as limiting.In the scope that appended claims is recorded, do not departing from the utility model spirit and scope situation, various change is all possible.
Claims (10)
1. the sealing configuration for bearing, comprise the skeleton being fixed to bearing outer ring and the elastomer seal be attached on skeleton, described elastomer seal has the first sealing lip sealing space between described skeleton and bearing inner race, it is characterized in that, this first sealing lip in the circumferential in the shape of a spiral.
2. the sealing configuration for bearing according to claim 1, is characterized in that, described first sealing lip forms some lip portion segments on the longitudinal profile of described sealing configuration, and this some lip portion segments tilts to extend in the same direction.
3. the sealing configuration for bearing according to claim 1 and 2, is characterized in that, described elastomer seal also comprises the second sealing lip, and described second sealing lip is positioned at the axially inner side of described first sealing lip.
4. the sealing configuration for bearing, comprise being fixed to the first skeleton of bearing outer ring and the second skeleton in order to be fixed to bearing inner race, described first skeleton comprises the first radial extension part, described second skeleton comprises the second radial extension part being positioned at the described first axial outside of radial extension part, seal space is formed between this second radial extension part and described first radial extension part, described first skeleton is attached with elastomer seal, this elastomer seal comprises and is configured on described first radial extension part and extends into the first sealing lip of described seal space, it is characterized in that, described first sealing lip in the circumferential in the shape of a spiral.
5. the sealing configuration for bearing according to claim 4, is characterized in that, described first sealing lip forms some lip portion segments on the longitudinal profile of described sealing configuration, and this some lip portion segments tilts to extend in the same direction.
6. the sealing configuration for bearing according to claim 4 or 5, is characterized in that, described elastomer seal also comprises the second sealing lip on the free terminal being configured in described first radial extension part.
7. the sealing configuration for bearing according to claim 4 or 5, it is characterized in that, described first skeleton also to comprise from described first radial extension part near one end of bearing inner race towards the first axial extension part that Bearing inner extends, and described elastomer seal also comprises the second sealing lip be configured on described first axial extension part.
8. the sealing configuration for bearing according to claim 7, is characterized in that, described second sealing lip in the circumferential in the shape of a spiral.
9. the sealing configuration for bearing according to claim 8, it is characterized in that, described first skeleton also to comprise from described first radial extension part near one end of bearing outer ring towards the second axial extension part that Bearing outer extends, and forms the opening that described seal space is communicated with Bearing outer between described second radial extension part with described second axial extension part.
10. the sealing configuration for bearing according to claim 9, it is characterized in that, described second skeleton also comprises and is positioned at described first axial extension part radially inner side and the 3rd axial extension part extended with described first axial extension part in the same direction, the space between the described second sealing lip described first axial extension part of sealing and described 3rd axial extension part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803596.9U CN205154917U (en) | 2015-10-15 | 2015-10-15 | A seal structure for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803596.9U CN205154917U (en) | 2015-10-15 | 2015-10-15 | A seal structure for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154917U true CN205154917U (en) | 2016-04-13 |
Family
ID=55690617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520803596.9U Expired - Fee Related CN205154917U (en) | 2015-10-15 | 2015-10-15 | A seal structure for bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154917U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214848A1 (en) * | 2017-05-24 | 2018-11-29 | 舍弗勒技术股份两合公司 | Sealing assembly |
| US20190120385A1 (en) * | 2017-10-19 | 2019-04-25 | System Seals, Inc. | Shaft seal with helical sealing lip |
-
2015
- 2015-10-15 CN CN201520803596.9U patent/CN205154917U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214848A1 (en) * | 2017-05-24 | 2018-11-29 | 舍弗勒技术股份两合公司 | Sealing assembly |
| US20190120385A1 (en) * | 2017-10-19 | 2019-04-25 | System Seals, Inc. | Shaft seal with helical sealing lip |
| WO2019079745A1 (en) * | 2017-10-19 | 2019-04-25 | System Seals, Inc. | Shaft seal with helical sealing lip |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20161015 |