CN212360516U - Combined bearing sealing element - Google Patents
Combined bearing sealing element Download PDFInfo
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- CN212360516U CN212360516U CN202020704874.6U CN202020704874U CN212360516U CN 212360516 U CN212360516 U CN 212360516U CN 202020704874 U CN202020704874 U CN 202020704874U CN 212360516 U CN212360516 U CN 212360516U
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- seal
- sealing
- bearing
- sealing lip
- interference fit
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Abstract
The utility model relates to a combined bearing sealing element, the outer seal of the sealing element is provided with two sealing lips which are in interference fit with the inner surface of a bearing seat hole, the inner surface of the inner seal is in interference fit with the outer surface of a bearing inner ring, the sealing effect is realized, the outer seal and the inner seal rotate relatively during the operation, and the problem that the sealing of the bearing is difficult to realize is solved; the outer sealing surface is provided with two sealing lips and a pressure reducing groove, so that the sealing effect is ensured, and the installation is convenient; a three-stage sealing structure is arranged between the inner seal and the outer seal, so that the sealing performance is reliable; the spring groove structural design can inhibit the negative influence of the abrasion of the sealing lip on the sealing effect, thereby prolonging the service life of the bearing.
Description
Technical Field
The utility model belongs to the technical field of the bearing, a modular bearing seal spare is related to.
Background
The sealing element is used as an important part of a sealed bearing, and is required to have reliable dustproof and waterproof performance, so that impurities such as dust, moisture and the like are prevented from entering the inside of the bearing, and lubricating grease is prevented from leaking. Therefore, the structure of the bearing sealing element plays a decisive role in the sealing performance of the bearing, and the sealing element of the bearing adopts different design schemes aiming at different working conditions.
Current bearing seal spare, as shown in figure 1, mostly are self-sealing structure, and specific the bearing outer lane, sealing member, inner circle or the seal receptacle between mutually support and formed seal structure, this kind of design is not suitable for the bearing that self is difficult to form self-sealedly. Therefore, designing a new sealing element to achieve reliable sealing between the bearing and the mating surface is a technical problem to be solved urgently.
Disclosure of Invention
The utility model aims at providing a modular bearing seal spare both can realize that bearing and mating surface form reliable sealed, can prevent effectively that impurity such as dust, moisture from getting into the bearing, and lubricating grease does not take place to leak again.
The utility model adopts the technical proposal that: a combined bearing seal comprises an inner seal and an outer seal; the method is characterized in that: the outer sealing surface is provided with a first sealing lip, a second sealing lip, an axial positioning surface and a first decompression groove, and the first sealing lip and the second sealing lip are in interference fit with the bearing seat hole; the inner surface of the outer seal is provided with a third sealing lip, and the third sealing lip is in interference fit with the outer surface of the inner seal to form a first-stage seal; the outer sealing waist part is provided with an axial sealing lip IV and a decompression groove II, and the sealing lip IV is in interference fit with the end surface of the inner seal to form a second-stage seal; and a plurality of uniformly distributed sealing lips five are arranged in the circumferential direction of the outer sealing end face, and the sealing lips five are contacted with the end face of the inner seal to form a third-stage seal.
The combined bearing sealing element is characterized in that: the outer seal is provided with a spring groove, and the spring ring is arranged in the spring groove.
The combined bearing sealing element is characterized in that: the first sealing lip on the outer sealing outer surface is wave-shaped and is in interference fit with the bearing seat hole; the second sealing lip protrudes outwards and is provided with a pressure relief groove which is in interference fit with the bearing seat hole.
The combined bearing sealing element is characterized in that: the outer seal is composed of a framework and a rubber ring body, and the framework is embedded into the rubber ring body.
The combined bearing sealing element is characterized in that: the inner seal is a flat retainer ring made of a stamped steel plate.
By adopting the utility model, the outer sealing surface is in interference fit with the inner surface of the bearing seat, the inner sealing surface is in interference fit with the outer surface of the bearing inner ring, and the inner seal and the outer seal rotate relatively during working, thereby solving the problem that the sealing of the bearing is difficult to realize; the outer sealing surface is provided with two sealing lips and a pressure reducing groove, so that the sealing effect is ensured, and the installation is convenient; the formed three-stage sealing ensures reliable sealing performance; the spring groove structural design can inhibit the negative influence of the abrasion of the sealing lip on the sealing effect, thereby prolonging the service life.
Drawings
Fig. 1 is a schematic diagram of a prior art structure.
Fig. 2 is a schematic view of the installation structure of the sealing member of the present invention.
Fig. 3 is a partially enlarged schematic view of fig. 2 according to the present invention.
Fig. 4 is a schematic view of the structure of the sealing member of the present invention.
The numbers in the figure indicate: the sealing structure comprises an inner seal 1, an outer seal 2, a spring ring 3, an outer surface 12, a first end face 13, a second end face 14, a first sealing lip 21, an axial positioning face 22, a second sealing lip 23, a fourth sealing lip 24, a third sealing lip 25, a fifth sealing lip 26, a first pressure relief groove 27, a second pressure relief groove 28 and a spring groove 29.
Detailed Description
The structure of the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2 and 3, the combined bearing seal comprises an inner seal 1, an outer seal 2 and a spring ring 3, wherein the inner seal 1 is a circlip made of a stamped steel plate; the outer seal 2 is composed of a framework and a rubber ring, and the framework is embedded into the rubber ring; the outer surface of the outer seal 2 is provided with a first wavy seal lip 21, a second wavy seal lip 23 and an axial positioning surface 22, the second wavy seal lip 23 protrudes outwards and is provided with a first relief groove 27, the outer seal 2 is installed in a bearing seat hole, and the first wavy seal lip 21, the second wavy seal lip 23 and the bearing seat hole are in interference fit; the inner surface of the outer seal 2 is provided with a third sealing lip 25 which is in interference fit with the outer surface 12 of the inner seal 2 to form a first-stage seal; the waist of the outer seal 2 is provided with a sealing lip IV 24 and a pressure reducing groove II 28, and the sealing lip IV 24 is in interference fit with the end face 13 of the inner seal 1 to form a second-stage seal; a plurality of uniformly distributed sealing lips five 26 are arranged in the circumferential direction of the end face of the outer seal 2 and are in contact with the end face 14 of the inner seal 1 to form a third-stage seal, so that impurities such as dust, moisture and the like are prevented from entering the inside of the bearing, leakage of grease in the bearing is avoided, and the sealing performance is reliable; the outer seal 2 is provided with a spring groove 29, and the spring ring 3 is arranged in the spring groove 29, so that the influence of abrasion of the third sealing lip 25 on the sealing performance can be reduced, and the service life of the bearing can be prolonged.
Claims (5)
1. A combined bearing seal comprises an inner seal and an outer seal; the method is characterized in that: the outer sealing surface is provided with a first sealing lip, a second sealing lip, an axial positioning surface and a first decompression groove, and the first sealing lip and the second sealing lip are in interference fit with the bearing seat hole; the inner surface of the outer seal is provided with a third sealing lip, and the third sealing lip is in interference fit with the outer surface of the inner seal to form a first-stage seal; the outer sealing waist part is provided with an axial sealing lip IV and a decompression groove II, and the sealing lip IV is in interference fit with the end surface of the inner seal to form a second-stage seal; and a plurality of uniformly distributed sealing lips five are arranged in the circumferential direction of the outer sealing end face, and the sealing lips five are contacted with the end face of the inner seal to form a third-stage seal.
2. The composite bearing seal of claim 1, wherein: the outer seal is provided with a spring groove, and the spring ring is arranged in the spring groove.
3. The composite bearing seal of claim 1, wherein: the first sealing lip on the outer sealing outer surface is wave-shaped and is in interference fit with the bearing seat hole; the second sealing lip protrudes outwards and is provided with a pressure relief groove which is in interference fit with the bearing seat hole.
4. The composite bearing seal of claim 1, wherein: the outer seal is composed of a framework and a rubber ring body, and the framework is embedded into the rubber ring body.
5. The composite bearing seal of claim 1, wherein: the inner seal is a flat retainer ring made of a stamped steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704874.6U CN212360516U (en) | 2020-04-30 | 2020-04-30 | Combined bearing sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704874.6U CN212360516U (en) | 2020-04-30 | 2020-04-30 | Combined bearing sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212360516U true CN212360516U (en) | 2021-01-15 |
Family
ID=74135021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020704874.6U Active CN212360516U (en) | 2020-04-30 | 2020-04-30 | Combined bearing sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212360516U (en) |
-
2020
- 2020-04-30 CN CN202020704874.6U patent/CN212360516U/en active Active
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