CN112303236A - Bidirectional rotary sealing high-rotating-speed oil seal - Google Patents
Bidirectional rotary sealing high-rotating-speed oil seal Download PDFInfo
- Publication number
- CN112303236A CN112303236A CN202011223684.3A CN202011223684A CN112303236A CN 112303236 A CN112303236 A CN 112303236A CN 202011223684 A CN202011223684 A CN 202011223684A CN 112303236 A CN112303236 A CN 112303236A
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- CN
- China
- Prior art keywords
- seal
- metal framework
- sealing
- lip
- rubber
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention provides a bidirectional rotary sealing high-rotating-speed oil seal which comprises a metal framework and a rubber part, wherein the metal framework is of an annular structure with an opening in the middle, and a supporting part extending out of the middle of the opening is arranged on the inner wall of the metal framework; the rubber part vulcanizes around metal framework to be formed with the seal lip along metal framework's supporting part inner wall, the seal lip is parallel with metal framework, and the seal lip medial surface is kept away from rubber part one end and is equipped with annular inboard sealing rib, and the seal lip medial surface is close to rubber part one end and is equipped with annular outside sealing rib. The sealing lip is made of pure rubber, the holding force of the sealing lip to a shaft is small, effective sealing is formed, friction is low, bidirectional high-speed rotation can be simultaneously met, the forward and reverse rotation occasions are not distinguished, and the linear speed can reach 60 m/s.
Description
Technical Field
The invention relates to the technical field of oil seals, in particular to a bidirectional rotary seal high-rotation-speed oil seal.
Background
The current sealing element suitable for bidirectional rotary sealing is limited by low linear velocity and can only be used in the occasions with the linear velocity below 20 m/s. For high speed bi-directional rotation applications, the seal can only meet its primary direction of rotation, thus sacrificing the sealing capability in its secondary direction of rotation.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a bidirectional rotary sealing high-rotation-speed oil seal.
The invention provides a bidirectional rotary sealing high-rotating-speed oil seal which comprises a metal framework and a rubber piece, wherein the metal framework is of an annular structure with an opening in the middle, and a supporting part extending out of the middle of the opening is arranged on the inner wall of the metal framework; the rubber part vulcanizes around metal framework to be formed with the seal lip along metal framework's supporting part inner wall, the seal lip is parallel with metal framework, and the seal lip medial surface is kept away from rubber part one end and is equipped with annular inboard sealing rib, and the seal lip medial surface is close to rubber part one end and is equipped with annular outside sealing rib, and it has two-way oil return line to lie in position evenly distributed between inboard sealing rib and the outside sealing rib on the seal lip medial surface.
Preferably, at least two outer sealing ribs are provided.
Preferably, the bidirectional oil return lines are provided with multiple groups.
Preferably, the bidirectional oil return lines consist of clockwise oil return lines and anticlockwise oil return lines, and the total number of the clockwise oil return lines and the anticlockwise oil return lines is 10-16.
Preferably, the rubber member is further formed with a dust lip along an inner wall of the support portion of the metal skeleton.
Preferably, the sealing lip is made of a rubber material.
The invention provides a bidirectional rotary sealing high-rotating-speed oil seal which comprises a metal framework and a rubber part, wherein a sealing lip in contact with a shaft is entirely made of rubber and is not provided with a clamping spring; when the oil seal works, the sealing lip forms a contact surface with a certain width on the shaft, the part of the sealing lip, which is in contact with the shaft, is designed with an inner sealing rib, an outer sealing rib and a bidirectional oil return line, the inner sealing rib and the outer sealing rib play a sealing role when the shaft is static and operates, the bidirectional oil return line plays a role in pumping oil and sealing when the shaft operates, and even if the shaft rotates at a high rotating speed and in two directions, the sealing on the sealing lip and oil pumping elements play a role to form effective sealing. The oil seal is different from the traditional design of the oil seal with the tightening spring, the sealing lip is made of pure rubber, the holding force of the sealing lip to a shaft is small, effective sealing is formed, the friction is low, bidirectional high-speed rotation can be simultaneously met, the forward and reverse rotation occasions are not distinguished, and the linear speed can reach 60 m/s.
Drawings
Fig. 1 is a schematic structural diagram of a bidirectional rotary seal high-speed oil seal according to the present invention.
Detailed Description
Referring to fig. 1, the invention provides a bidirectional rotary sealing high-rotation-speed oil seal, which comprises a metal framework 1 and a rubber part 2, wherein the metal framework 1 is of an annular structure with an opening in the middle, and a supporting part 11 extending out of the middle of the opening is arranged on the inner wall of the metal framework 1; rubber spare 2 vulcanizes around metal framework 1 to be formed with seal lip 21 along the supporting portion 11 inner wall of metal framework 1, seal lip 21 is parallel with metal framework 1, and the medial surface of seal lip 21 is kept away from 2 one ends of rubber spare and is equipped with annular inboard sealing rib 22, and the medial surface of seal lip 21 is close to 2 one ends of rubber spare and is equipped with annular outside sealing rib 23.
In a specific embodiment, at least two outer sealing ribs 23 are provided, and three or four rings of annular outer sealing ribs 23 can be adopted according to different shaft diameters and required holding force.
In the specific embodiment, two-way oil return lines 24 are uniformly distributed on the inner side surface of the sealing lip 21 at positions between the inner sealing rib 22 and the outer sealing rib 23. The number of sets of two-way return lines 24 varies depending on the size of the shaft diameter. Each group of bidirectional oil return lines 24 consists of clockwise oil return lines and anticlockwise oil return lines, and the total number of the clockwise oil return lines and the anticlockwise oil return lines is 10-16.
In the embodiment, the rubber member 2 is further formed with a dust lip 25 along the inner wall of the support portion 11 of the metal skeleton 1. The dust lip 25 functions to seal dust. In the occasion of little dust, the dust-proof lip can be omitted.
The invention is composed of a metal framework 1 and a rubber part 2, wherein a sealing lip 21 contacted with a shaft is entirely composed of rubber without a tightening spring; when the oil seal works, the sealing lip 21 forms a contact surface with a certain width on a shaft, the part of the sealing lip 21, which is in contact with the shaft, is provided with an inner sealing rib 22, an outer sealing rib 23 and a bidirectional oil return line 24, the inner sealing rib 22 and the outer sealing rib 23 play a sealing role when the shaft is static and operates, the bidirectional oil return line 24 plays a role in pumping oil and sealing when the shaft operates, and even if the shaft rotates at a high rotating speed and bidirectionally, the sealing on the sealing lip 21 and oil pumping elements also play a role to form effective sealing. The oil seal is different from the traditional oil seal with a clamping spring, the sealing lip 21 is made of pure rubber, the holding force of the sealing lip to a shaft is small, and the friction is low while effective sealing is formed.
The invention can be used for bidirectional rotary sealing in the automobile industry, such as a gearbox output shaft. The bidirectional rotating speed reducer is particularly suitable for occasions of high-speed bidirectional rotation, such as input shaft sealing of an electric automobile speed reducer, occasions of high-rotating-speed bidirectional rotation in the general machinery industry of subways, high-speed rails and the like, and occasions of importance that forward and reverse directions of an automatic driving automobile are not distinguished and are equal are used in the future.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A bidirectional rotary sealing high-rotation-speed oil seal is characterized by comprising a metal framework (1) and a rubber part (2), wherein the metal framework (1) is of an annular structure with an opening in the middle, and a supporting part (11) extending out of the middle of the opening is arranged on the inner wall of the metal framework (1); rubber spare (2) vulcanize around metal framework (1), and be formed with seal lip (21) along supporting part (11) inner wall of metal framework (1), seal lip (21) are parallel with metal framework (1), seal lip (21) medial surface is kept away from rubber spare (2) one end and is equipped with annular inboard sealed muscle (22), seal lip (21) medial surface is close to rubber spare (2) one end and is equipped with annular outside sealed muscle (23), it has two-way oil return line (24) to lie in position evenly distributed between inboard sealed muscle (22) and outside sealed muscle (23) on seal lip (21) medial surface.
2. The rotary seal high speed oil seal of claim 1, wherein there are at least two outside sealing ribs (23).
3. The bi-directional rotary seal high speed oil seal according to claim 1, wherein the bi-directional oil return lines (24) are provided with multiple sets.
4. The bidirectional rotary seal high speed oil seal according to any one of claims 1 to 3, wherein the bidirectional oil return line (24) is composed of clockwise oil return lines and counterclockwise oil return lines, and the total number of the clockwise oil return lines and the counterclockwise oil return lines is 10-16.
5. The high-speed oil seal of the bidirectional rotary seal according to any one of claims 1 to 3, wherein the rubber member (2) is further formed with a dust lip (25) along the inner wall of the support portion (11) of the metal framework (1).
6. A bi-directional rotary seal high speed oil seal according to any one of claims 1 to 3 characterised in that the sealing lip (21) is made of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223684.3A CN112303236A (en) | 2020-11-05 | 2020-11-05 | Bidirectional rotary sealing high-rotating-speed oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011223684.3A CN112303236A (en) | 2020-11-05 | 2020-11-05 | Bidirectional rotary sealing high-rotating-speed oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112303236A true CN112303236A (en) | 2021-02-02 |
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ID=74326263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011223684.3A Pending CN112303236A (en) | 2020-11-05 | 2020-11-05 | Bidirectional rotary sealing high-rotating-speed oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112303236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033852A (en) * | 2021-10-12 | 2022-02-11 | 莱阳市昌誉密封科技股份有限公司 | Bidirectional high-speed motor oil seal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388421Y (en) * | 1998-08-14 | 2000-07-19 | 十堰东森汽车密封件有限公司 | Dynamic rotation axis grease seal with two-way oil return line |
| CN101701629A (en) * | 2009-11-28 | 2010-05-05 | 烟台润蚨祥油封有限公司 | Rotary oil seal of multi-head spiral oil return line |
| CN108488387A (en) * | 2018-05-17 | 2018-09-04 | 昆山健博密封件科技有限公司 | A kind of multiple lip seal device |
| CN210830472U (en) * | 2019-06-06 | 2020-06-23 | 烟台润蚨祥油封有限公司 | Framework oil seal structure |
| CN111442088A (en) * | 2020-05-14 | 2020-07-24 | 昆山健博密封件科技有限公司 | Combined polytetrafluoroethylene oil seal |
| CN111623108A (en) * | 2020-05-09 | 2020-09-04 | 昆山茂顺密封件工业有限公司 | High-rotation-speed oil seal of new energy gearbox |
-
2020
- 2020-11-05 CN CN202011223684.3A patent/CN112303236A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388421Y (en) * | 1998-08-14 | 2000-07-19 | 十堰东森汽车密封件有限公司 | Dynamic rotation axis grease seal with two-way oil return line |
| CN101701629A (en) * | 2009-11-28 | 2010-05-05 | 烟台润蚨祥油封有限公司 | Rotary oil seal of multi-head spiral oil return line |
| CN108488387A (en) * | 2018-05-17 | 2018-09-04 | 昆山健博密封件科技有限公司 | A kind of multiple lip seal device |
| CN210830472U (en) * | 2019-06-06 | 2020-06-23 | 烟台润蚨祥油封有限公司 | Framework oil seal structure |
| CN111623108A (en) * | 2020-05-09 | 2020-09-04 | 昆山茂顺密封件工业有限公司 | High-rotation-speed oil seal of new energy gearbox |
| CN111442088A (en) * | 2020-05-14 | 2020-07-24 | 昆山健博密封件科技有限公司 | Combined polytetrafluoroethylene oil seal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033852A (en) * | 2021-10-12 | 2022-02-11 | 莱阳市昌誉密封科技股份有限公司 | Bidirectional high-speed motor oil seal |
| CN114033852B (en) * | 2021-10-12 | 2023-08-29 | 莱阳市昌誉密封科技股份有限公司 | Bidirectional high-speed motor oil seal |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |