CN201810776U - Rotating shaft oil seal with high follow-up characteristic - Google Patents
Rotating shaft oil seal with high follow-up characteristic Download PDFInfo
- Publication number
- CN201810776U CN201810776U CN2010205241533U CN201020524153U CN201810776U CN 201810776 U CN201810776 U CN 201810776U CN 2010205241533 U CN2010205241533 U CN 2010205241533U CN 201020524153 U CN201020524153 U CN 201020524153U CN 201810776 U CN201810776 U CN 201810776U
- Authority
- CN
- China
- Prior art keywords
- lip
- oil seal
- ptfe
- shaft oil
- rotary shaft
- 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
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 44
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 44
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 18
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a high-follow-up characteristic rotating shaft oil seal comprising an outermost outer skeleton, a middle elastic lip and an innermost PTFE (polytetrafluoroethylene) seal lip, wherein the cross sections of the elastic lip and the PTFE seal lip form a Z shape, the PTFE seal lip is tightly arranged on a rotating shaft and has interference. Because the lip follow-up characteristic of the oil seal is greatly increased, the high-follow-up characteristic rotating shaft oil seal with high follow-up characteristic has better seal effect, more reliable seal, longer service life and winder application range.
Description
Technical field
The utility model relates to the dynamic sealing technology field, is specifically related to a kind of rotary shaft oil seal of high servo-actuated.
Background technique
To fill the oil sealing of PTFE material as sealing lip, be called for short the PTFE oil sealing, existing structure clips PTFE sealing lip b by two skeleton a as shown in Figure 1 and Figure 2, reach similar structure like this, owing to its heatproof, the withstand voltage and excellent occasions such as high speed, high temperature that are widely used in of wear-resisting property.But just because of hardness height, the poor flexibility of filling PTFE material itself, making the PTFE sealing lip good inadequately to the servo-actuated of running shaft, when being reflected in practical application, is exactly when the radial beat eccentricity of running shaft is bigger than normal, its sealability is just good inadequately, even seal failure occurs.Servo-actuated is a very important aspect of oil sealing performance quality, and is like this at common rubber elasticity class oil sealing, and reflection is obvious especially on the PTFE oil sealing.If can improve the servo-actuated of oil sealing, just can significantly reduce its requirement, thereby enlarge application area Environmental Conditions.For the PTFE oil sealing, kept its heatproof, withstand voltage and wear-resisting advantage exactly, and overcome the narrow shortcoming of application area.
This shows, improve the servo-actuated of PTFE oil sealing, to improving the sealing effect of PTFE oil sealing, the application area of widening the PTFE oil sealing has important effect and meaning.
The model utility content
The utility model provides a kind of rotary shaft oil seal of high servo-actuated in order to overcome the deficiency that above prior art exists.
The purpose of this utility model realizes by following technological scheme: the rotary shaft oil seal of this high servo-actuated, it is characterized in that: comprise the outer skeleton that is in most peripheral, middle elasticity lip and be in the PTFE sealing lip in interior week, the sectional shape of elasticity lip and PTFE sealing lip constitutes Z-shaped, the PTFE sealing lip is held tightly on running shaft, running shaft is sealed, and the PTFE sealing lip has magnitude of interference.Dermoskeleton is erected and is supported and positioning action.
Because V-shaped part has deformation performance to be opened/closed, the sectional shape of described elasticity lip is a V-arrangement.
Because V-shaped part has deformation performance to be opened/closed, the sectional shape of described PTFE sealing lip is a V-arrangement.
Be connected or other technology connects by bonding between described elasticity lip and the PTFE sealing lip.
Be connected or other technology connects by bonding between described elasticity lip and the outer skeleton.
As preferred material, described outer framework material is metallic material or other rigid non-metallic material.
As preferred material, described elasticity lip material is rubber material or elastomer class material.
As preferred material, described PTFE sealing lip material is a filled polytetrafluoroethylene.
The utility model has following advantage with respect to prior art:
1, the utility model improves existing rotary shaft oil seal, outside PTFE sealing lip and metal between the skeleton, increased the rubber elasticity lip, the sectional shape of elasticity lip and PTFE sealing lip constitutes Z-shaped, when the running shaft circular runout, the PTFE sealing lip that is deformed into that the rubber elasticity lip produces provides radial elastic, has fundamentally improved the servo-actuated of the lip of PTFE sealing lip to running shaft.
2, the utility model is " Z " shape with overall construction design, and this is a kind of radial elastic structure, can improve the servo-actuated of lip to running shaft from structural entity.
3, the utility model has been owing to significantly improved the lip servo-actuated of oil sealing, thereby sealing effect is better, seals more reliably, and the life-span is longer, and application area is wideer.
Description of drawings
Fig. 1 is the sectional view of existing P TFE oil sealing.
Fig. 2 is the sectional view after existing P TFE oil sealing is in place.
Fig. 3 is the sectional view of the rotary shaft oil seal of high servo-actuated of the present utility model.
Fig. 4 is the sectional view after the rotary shaft oil seal of high servo-actuated of the present utility model is in place.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The rotary shaft oil seal of high servo-actuated as shown in Figure 3, comprise the outer skeleton 1 that is in most peripheral, middle elasticity lip 2 and be in the PTFE sealing lip 3 in interior week, the sectional shape of elasticity lip 2 and PTFE sealing lip 3 constitutes Z-shaped, PTFE sealing lip 3 is held tightly on running shaft 4, running shaft 4 is sealed, and PTFE sealing lip 3 has magnitude of interference.1 on outer skeleton supports and positioning action.
Because V-shaped part has deformation performance to be opened/closed, the sectional shape of elasticity lip 2 is a V-arrangement.
Because V-shaped part has deformation performance to be opened/closed, the sectional shape of PTFE sealing lip 3 is a V-arrangement.
Be connected by bonding between elasticity lip 2 and the PTFE sealing lip 3.Be connected by bonding between elasticity lip 2 and the outer skeleton 1.
As shown in Figure 4, after being in place, the lip of PTFE sealing lip 3 can be extruded and deform, and holds tightly on running shaft 4.The lip of PTFE sealing lip 3 utilizes the interference radial force that running shaft 4 is realized sealing.Servo-actuated to running shaft 4 is realized by rubber elasticity lip 2 that mainly the setting-up eccentricity sum of errors run-out error of running shaft 4 is then absorbed by rubber elasticity lip 2.The location of oil sealing and support are then realized by outer skeleton 1.Because can effectively realize the holding tightly and servo-actuated of running shaft, so sealing effect is fine, application area is also very wide.
Above-mentioned embodiment is a preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (8)
1. the rotary shaft oil seal of high servo-actuated, it is characterized in that: comprise the outer skeleton that is in most peripheral, middle elasticity lip and be in the PTFE sealing lip in interior week, the sectional shape of elasticity lip and PTFE sealing lip constitutes Z-shaped, and the PTFE sealing lip is held tightly on running shaft, and the PTFE sealing lip has magnitude of interference.
2. the rotary shaft oil seal of high servo-actuated according to claim 1, it is characterized in that: the sectional shape of described elasticity lip is a V-arrangement.
3. the rotary shaft oil seal of high servo-actuated according to claim 1, it is characterized in that: the sectional shape of described PTFE sealing lip is a V-arrangement.
4. the rotary shaft oil seal of high servo-actuated according to claim 1 is characterized in that: be connected by bonding between described elasticity lip and the PTFE sealing lip.
5. the rotary shaft oil seal of high servo-actuated according to claim 1 is characterized in that: be connected by bonding between described elasticity lip and the outer skeleton.
6. the rotary shaft oil seal of high servo-actuated according to claim 1, it is characterized in that: described outer framework material is a metallic material.
7. the rotary shaft oil seal of high servo-actuated according to claim 1, it is characterized in that: described elasticity lip material is a rubber material.
8. the rotary shaft oil seal of high servo-actuated according to claim 1, it is characterized in that: described PTFE sealing lip material is a filled polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205241533U CN201810776U (en) | 2010-09-08 | 2010-09-08 | Rotating shaft oil seal with high follow-up characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205241533U CN201810776U (en) | 2010-09-08 | 2010-09-08 | Rotating shaft oil seal with high follow-up characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810776U true CN201810776U (en) | 2011-04-27 |
Family
ID=43893717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205241533U Expired - Lifetime CN201810776U (en) | 2010-09-08 | 2010-09-08 | Rotating shaft oil seal with high follow-up characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852240B2 (en) | 2022-02-24 | 2023-12-26 | Caterpillar Inc. | Followability enhancer for a rotational seal |
-
2010
- 2010-09-08 CN CN2010205241533U patent/CN201810776U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852240B2 (en) | 2022-02-24 | 2023-12-26 | Caterpillar Inc. | Followability enhancer for a rotational seal |
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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: GUANGZHOU MECHANICAL ENGINEERING RESEARCH INSTITUT Free format text: FORMER NAME: GUANGZHOU INST. OF MACHINERY SCIENCE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510700 Whampoa, Guangdong Province, Mao Road, District No. 828, No. Patentee after: Guangzhou Mechanical Engineering Research Institute Co., Ltd. Address before: 510700 Whampoa, Guangdong Province, Mao Road, District No. 828, No. Patentee before: Guangzhou Mechanical Engineering Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |