CN117167406A - Framework for sealing ring, sealing ring and bearing - Google Patents
Framework for sealing ring, sealing ring and bearing Download PDFInfo
- Publication number
- CN117167406A CN117167406A CN202210582634.7A CN202210582634A CN117167406A CN 117167406 A CN117167406 A CN 117167406A CN 202210582634 A CN202210582634 A CN 202210582634A CN 117167406 A CN117167406 A CN 117167406A
- Authority
- CN
- China
- Prior art keywords
- ring
- bearing
- sealing
- outer ring
- seal
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 102
- 230000013011 mating Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention relates to a framework for a sealing ring, the sealing ring and a bearing. The present invention provides a skeleton for a seal ring for sealing an annular space defined by a bearing inner ring and a bearing outer ring of a bearing, the skeleton being integrally constructed in an annular shape and comprising: an outer ring portion for at least partially mating with the bearing outer ring; and an inner ring portion at least partially for mating with the bearing inner ring, wherein the outer ring portion is provided with an oil drain groove. The framework for the sealing ring, the sealing ring and the bearing provided by the invention can improve the installation clamping force between the sealing ring and the outer ring of the bearing, and avoid the problem of sealing failure caused by the fact that the sealing ring is separated from the installation position.
Description
Technical Field
The invention relates to a framework for a sealing ring, the sealing ring and a bearing.
Background
With the wide application of bearings, the functional requirements of the bearing seal rings are also increasing. Such as the deep groove ball bearings often used in electric vehicles, which have oil drains on their seal rings to allow lubrication to pass through the bearings to lubricate other components of the electric vehicle.
Referring to fig. 1, fig. 1 is a schematic diagram showing a seal ring according to the prior art. As shown in fig. 1, the sealing ring for sealing the deep groove ball bearing comprises an outer ring part 12 'and an inner ring part 13', wherein the outer ring part 12 'and the inner ring part 13' are made of rubber materials, the outer ring part 12 'is used for forming sealing fit with a groove of the outer ring of the bearing, and the inner ring part 13' is used for forming sealing fit with a groove of the inner ring of the bearing. And, be provided with skeleton 11 'between the outer loop portion 12' and the interior loop portion 13 'of sealing washer, skeleton 11' is the rigid material to provide rigid support for the sealing washer.
In the prior art, the outer ring portion 12 'of the seal ring is made of rubber material and is divided into a plurality of blocks by the oil drain groove 14' along the circumferential direction, so that the installation clamping force between the outer ring portion 12 'of the seal ring and the groove of the outer ring of the bearing is weaker, and the lubricating oil forms an impact action on the seal ring when flowing through the seal ring, so that the outer ring portion 12' of the seal ring is easily separated from the installation position.
Secondly, when the seal ring is applied in a high-speed and high-temperature environment, the inner ring portion 13' of the seal ring gradually loses elasticity, thereby causing the sealing function to fail.
Therefore, how to improve the mounting clamping force of the sealing ring provided with the oil drain groove and the bearing outer ring, and avoid the problem of sealing failure caused by the fact that the sealing ring is separated from the mounting position is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a framework for a sealing ring, the sealing ring and a bearing, which can improve the installation clamping force between the sealing ring and the outer ring of the bearing and avoid the problem of sealing failure caused by the fact that the sealing ring is separated from an installation position.
A first aspect of the present invention provides a skeleton for a seal ring for sealing an annular space defined by a bearing inner ring and a bearing outer ring of a bearing, the skeleton being integrally constructed in an annular shape and comprising: an outer ring portion for at least partially mating with the bearing outer ring; and an inner ring portion at least partially for mating with the bearing inner ring, wherein the outer ring portion is provided with an oil drain groove.
According to an embodiment of the invention, the inner ring portion is provided with a tooth structure.
According to an embodiment of the present invention, the skeleton is made of elastic metal.
According to the embodiment of the invention, the oil drain grooves are provided in plural and are distributed at intervals in the circumferential direction of the outer ring portion.
According to an embodiment of the present invention, the tooth structure is provided in plurality and is distributed at intervals along the circumferential direction of the inner ring portion.
A second aspect of the present invention provides a seal ring comprising: a skeleton for a seal ring searched in any of the above embodiments; and a sealing portion partially encasing the skeleton and having an outer ring sealing portion configured to form a seal with the bearing outer ring and an inner ring sealing portion configured to form a seal with the bearing inner ring.
According to the embodiment of the invention, the inner ring part of the framework is provided with a tooth structure, and the inner ring sealing part covers the tooth structure.
According to an embodiment of the invention, the rigidity of the skeleton is greater than the rigidity of the sealing portion.
A third aspect of the invention provides a bearing comprising: a bearing outer ring; a bearing inner ring; and a seal ring according to any one of the embodiments above, disposed between the bearing outer race and the bearing inner race such that an outer race seal portion of the seal ring forms a seal with the bearing outer race and an inner race seal portion of the seal ring forms a seal with the bearing inner race.
According to an embodiment of the present invention, the inner peripheral surface of the bearing outer ring is concavely formed with an annular groove, and the outer ring portion of the skeleton of the seal ring partially protrudes into the groove of the bearing outer ring at least in the radial direction.
The framework for the sealing ring can provide rigid support for the sealing ring, the outer ring part of the framework is provided with the oil drain groove, when the sealing ring provided with the framework is installed on a bearing, the outer ring part of the framework is at least partially matched with the outer ring of the bearing, and when lubricating oil in the bearing flows through and impacts the sealing ring, compared with the rubber material with a softer matching part between the sealing ring and the outer ring of the bearing in the prior art, the framework provided by the invention is made of a certain rigid material, so that the outer ring part of the framework and the outer ring of the bearing have enough installation clamping force, and the problem that the sealing ring falls off from the outer ring of the bearing is avoided.
Drawings
FIG. 1 is a schematic diagram showing a seal ring according to the prior art;
FIG. 2 is a schematic diagram illustrating a skeleton according to an embodiment of the present invention;
fig. 3 is a partial cross-sectional view showing a seal ring according to an embodiment of the present invention.
Detailed Description
Specific embodiments according to the present invention will be described below with reference to the accompanying drawings. The following detailed description and the accompanying drawings are provided to illustrate the principles of the invention and not to limit the invention to the preferred embodiments described, the scope of which is defined by the claims.
It should be noted that the direction or positional relationship referred to in the present specification is the direction or positional relationship based on the drawings, and is merely for convenience and simplicity of description, and does not indicate or imply that the apparatus referred to must have a specific direction, be configured in a specific direction, and thus should not be construed as limiting the invention.
In the related prior art, a seal ring for sealing a deep groove ball bearing is made of rubber materials at the outer ring part and the inner ring part, and a plurality of oil discharge grooves are axially arranged at the edge of the outer ring part. When the sealing ring in the prior art is used for sealing a deep groove ball bearing, the lubricating oil can impact the outer ring part when flowing through the oil drain groove, so that the outer ring part is easy to separate from the groove of the outer ring of the bearing. Secondly, when the sealing ring is applied in a high-speed high-temperature environment, the outer ring part and the inner ring part of the sealing ring gradually lose elasticity, and then the sealing function is lost.
Based on the findings of the above technical problems, the embodiment of the invention provides a sealing ring and a framework for the sealing ring. In the embodiment of the invention, the sealing ring is applied to the bearing. The bearing has an inner bearing ring 17 and an outer bearing ring 16, with an inner annular space defined between the inner bearing ring 17 and the outer bearing ring 16. The seal ring is used for sealing the annular space to prevent lubricating oil inside the bearing from leaking to the outside of the bearing. An annular groove is concavely formed on the inner peripheral surface of the bearing outer ring 16, and an annular groove is concavely formed on the outer peripheral surface of the bearing inner ring 17.
FIG. 2 is a schematic diagram illustrating a skeleton according to an embodiment of the present invention; and fig. 3 is a partial cross-sectional view showing a seal ring according to an embodiment of the present invention. As shown in fig. 2 and 3, the gasket includes a frame 11 and a sealing portion connected to each other. The backbone 11 is integrally formed as a ring structure and serves to provide rigid support for the seal ring. The seal portion is also formed integrally in an annular structure and is used to form a seal with the bearing inner race and the bearing outer race.
In this embodiment, the seal at least partially encloses the skeleton. The sealing part comprises an inner ring sealing part, an outer ring sealing part and a connecting part. The inner ring seal is for forming a seal with the bearing inner ring 17 and the outer ring seal is for forming a seal with the bearing outer ring 16. The connecting portion is used for connecting the inner ring sealing portion and the outer ring sealing portion. In one embodiment, the connection is located on the axial side of the skeleton remote from the inner annular space of the bearing.
It will be appreciated that the skeleton acts to support the sealing ring and therefore the rigidity of the skeleton is higher than the rigidity of the sealing portion. In one embodiment, the skeleton 11 is made of a metal material with a certain elasticity, for example, a metal material such as spring steel, copper (e.g. 65Mn steel) or copper alloy. The metal material has certain elasticity and better rigidity. In one embodiment, the sealing portion is made of rubber material. The rubber material has good elasticity, so that good sealing fit can be formed with the bearing outer ring 16 and the bearing inner ring 17. In one embodiment, the seal is attached to the backbone by vulcanization or extrusion. Since the skeleton 11 provided in this embodiment is made of an elastic metal material, when the elasticity of the rubber material of the outer ring portion 12 of the skeleton 11 is weakened, the elasticity of the skeleton 11 can also enable the outer ring portion 12 of the skeleton 11 to form a sealing fit with the bearing outer ring 16, so that the problem of sealing failure is avoided.
In the present embodiment, the seal portion is configured of a conductive material to form a conductive path between the bearing inner ring 17 and the bearing outer ring 16. By the arrangement, a current path is formed between the bearing inner ring 17 and the bearing outer ring 16, so that the problem that a high pressure drop exists between the bearing inner ring and the bearing outer ring to cause damage to a bearing raceway or rolling bodies is avoided.
The outer ring portion 12 of the skeleton 11 is at least partially engaged with the bearing outer ring 16, and the inner ring portion 13 of the skeleton 11 is at least partially engaged with the bearing inner ring 17. In one embodiment, when the seal ring having the skeleton 11 in this embodiment is mounted to the bearing, the outer ring portion 12 of the skeleton 11 extends at least partially into the groove of the bearing outer ring 16 in the radial direction, and furthermore, the inner ring portion 13 of the skeleton 11 extends at least partially into the groove of the bearing inner ring 17 in the radial direction.
In this embodiment, the oil drain groove 14 is provided in the outer ring portion 12 of the skeleton 11. In some embodiments, the oil drain grooves 14 are provided in plurality and are spaced apart along the circumferential direction of the outer ring portion 12, particularly uniformly spaced apart.
In the seal ring provided with the frame 11, the oil drain groove 14 of the frame 11 constitutes the oil drain groove of the seal ring. The seal ring provided with the skeleton 11 of the present embodiment is applied to a bearing, and when lubricating oil flows through the oil drain groove 14 of the skeleton 11, the lubricating oil impacts the skeleton 11. Because the skeleton 11 has good rigidity, the sealing ring and the groove of the bearing outer ring 16 can always keep good clamping force, and the problem that the sealing ring is separated from the groove of the bearing outer ring 16 is avoided.
In a further embodiment, the inner ring portion 13 of the skeleton 11 is provided with a tooth arrangement 15. In some embodiments, the tooth structure 15 may be plural and spaced apart along the circumference of the inner ring portion 13, particularly uniformly spaced apart. Specifically, a plurality of tooth grooves may be machined along the edge of the inner ring portion 13 of the skeleton 11, and the plurality of tooth grooves are circumferentially spaced apart, and the tooth structure 15 may be formed by a structure between two adjacent tooth grooves.
In the skeleton 11 of the present embodiment, since the inner ring portion 13 is provided with the tooth structure 15, the skeleton 11 has better supporting property on one hand, and on the other hand, the tooth structure 15 is easy to generate elastic deformation, and the elasticity is durable and is not easy to fail.
In one embodiment, the inner ring seal wraps around the tooth structure 15. After the sealing ring is assembled on the bearing, the tooth structure 15 and the sealing part constructed as rubber material are elastically deformed and form a sealing fit with the bearing inner ring 17 by elastic force. When the sealing ring is applied in a high-speed high-temperature environment, even if the rubber material gradually loses elasticity, the tooth structure 15 still keeps better elasticity, and the rubber material and the bearing inner ring 17 can be kept in sealing fit, so that the problem of sealing failure is avoided.
The inner ring sealing portion may include a first sealing lip 18 for abutting sealing with the bearing inner ring 17 and a second sealing lip 19 for forming a non-contact seal with the bearing inner ring 17. By this arrangement, the inner ring seal portion can form a good seal with the bearing inner ring 17, and the first seal lip 18 can be brought into contact with the bearing inner ring 17 by electrical conduction. The lip of the second sealing lip 19 is made of polytetrafluoroethylene.
Further, the outer race seal may include a third sealing lip 20, the third sealing lip 20 for abutting sealing with the bearing outer race 16. By the arrangement, the outer ring sealing part can form a good sealing effect with the bearing outer ring 16, and the sealing ring is in conductive contact with the bearing outer ring 16.
There is also provided in an embodiment of the invention a bearing comprising a bearing outer race 16, a bearing inner race 17 and a seal ring as described in any of the embodiments above. The seal ring is configured to be located between the bearing outer race 16 and the bearing inner race 17 such that an outer race seal portion of the seal ring forms a seal with the bearing outer race 16 and an inner race seal portion of the seal ring forms a seal with the bearing inner race 17.
In one embodiment, the inner ring portion 13 of the armature 11 extends at least partially into the groove of the bearing inner ring 17 in the radial direction. In this way, when the lubricating oil impinges on the outer ring portion 12, a good clamping force can be maintained between the seal ring and the groove of the bearing outer ring 16 at all times, thereby further avoiding the problem of the seal ring coming out of the bearing outer ring 16. In one embodiment, the outer ring portion 12 of the cage 11 extends at least partially radially into the groove of the bearing outer ring 16. Similarly, the problem of the seal ring backing out of the bearing inner race 16 can be further avoided.
So set up, the bearing that this embodiment provided can improve the installation clamping force between sealing washer and the bearing, avoids the sealing washer to break away from the problem that the mounted position leads to sealing failure. The deduction process of the beneficial effects is substantially similar to the deduction process of the beneficial effects brought by the framework for the sealing ring, and is not repeated here.
As described above, although the exemplary embodiments of the present invention have been described in the specification with reference to the accompanying drawings, the present invention is not limited to the above-described specific embodiments, and the scope of the present invention should be defined by the claims and their equivalents.
List of reference numerals
11. 11' skeleton
12' outer ring portion
13' inner ring portion
14. 14' oil drain groove
12. Outer ring part
13. Inner ring part
15. Tooth structure
16. Bearing outer ring
17. Bearing inner ring
18. First sealing lip
19. Second sealing lip
20. Third sealing lip
Claims (10)
1. A skeleton (11) for a sealing ring for sealing an annular space defined by a bearing inner ring and a bearing outer ring of a bearing, the skeleton (11) being integrally constructed in an annular shape and comprising:
an outer ring portion (12) for at least partially mating with the bearing outer ring (16); and
an inner ring portion (13) for at least partial cooperation with the bearing inner ring (17), wherein,
the outer ring portion is provided with an oil drain groove.
2. The skeleton (11) for a sealing ring according to claim 1, wherein,
the inner ring portion (13) is provided with a tooth structure (15).
3. The skeleton (11) for a sealing ring according to claim 1, wherein,
the framework (11) is made of elastic metal.
4. The skeleton (11) for a sealing ring according to claim 1, wherein,
the oil drain grooves (14) are provided in plural and are distributed at intervals in the circumferential direction of the outer ring portion (12).
5. The skeleton (11) for a sealing ring according to claim 2, wherein,
the tooth structures (15) are provided in plurality and are distributed at intervals along the circumferential direction of the inner ring portion (13).
6. A seal ring, comprising:
-a skeleton (11) for sealing rings according to any one of claims 1 to 5;
and a sealing part which partially covers the skeleton (11) and has an outer ring sealing part configured to form a seal with the bearing outer ring (16) and an inner ring sealing part configured to form a seal with the bearing inner ring (17).
7. The gasket of claim 6, wherein,
the inner ring part of the framework (11) is provided with a tooth structure (15), and the inner ring sealing part is coated on the tooth structure (15).
8. The gasket of claim 6, wherein,
the rigidity of the skeleton (11) is greater than the rigidity of the sealing portion.
9. A bearing, comprising:
a bearing outer ring (16);
a bearing inner ring (17); and
a seal ring according to any one of claims 6-8, arranged between the bearing outer ring (16) and the bearing inner ring (17) such that an outer ring seal portion of the seal ring forms a seal with the bearing outer ring (16) and an inner ring seal portion of the seal ring forms a seal with the bearing inner ring (17).
10. The bearing of claim 9, wherein,
an annular groove is concavely formed on the inner peripheral surface of the bearing outer ring (16), and the outer ring part (12) of the framework (11) of the sealing ring at least partially stretches into the groove of the bearing outer ring (16) in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210582634.7A CN117167406A (en) | 2022-05-26 | 2022-05-26 | Framework for sealing ring, sealing ring and bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210582634.7A CN117167406A (en) | 2022-05-26 | 2022-05-26 | Framework for sealing ring, sealing ring and bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117167406A true CN117167406A (en) | 2023-12-05 |
Family
ID=88928581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210582634.7A Pending CN117167406A (en) | 2022-05-26 | 2022-05-26 | Framework for sealing ring, sealing ring and bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117167406A (en) |
-
2022
- 2022-05-26 CN CN202210582634.7A patent/CN117167406A/en active Pending
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication |