CN215634978U - Combined oil seal - Google Patents
Combined oil seal Download PDFInfo
- Publication number
- CN215634978U CN215634978U CN202122019931.4U CN202122019931U CN215634978U CN 215634978 U CN215634978 U CN 215634978U CN 202122019931 U CN202122019931 U CN 202122019931U CN 215634978 U CN215634978 U CN 215634978U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- framework
- lip
- inner oil
- bowl
- 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
Links
- 239000000428 dust Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 206
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a combined oil seal, which comprises an outer oil seal framework and an inner oil seal framework; the outer oil seal framework and the inner oil seal framework are both in a bowl shape, the bowl-shaped opening ends of the outer oil seal framework and the inner oil seal framework face to opposite directions, and the outer oil seal framework is sleeved on the outer side of the inner oil seal framework; an outer oil seal through hole is formed in the bowl-shaped bowl bottom of the outer oil seal framework, and an outer oil seal lip is arranged at the outer oil seal through hole; an inner oil seal through hole is formed in the bowl-shaped bowl bottom of the inner oil seal framework, and an inner oil seal lip is arranged at the inner oil seal through hole. The double-layer oil seal structure has the advantages that the double-layer oil seal is arranged in a shorter axial space by arranging the sleeve joint of the inner oil seal framework and the outer oil seal framework, the inner oil seal lip firstly seals and blocks lubricating oil, and when the inner oil seal lip is damaged due to abrasion and corrosion of the lubricating oil, the lubricating oil is continuously blocked by the outer oil seal lip, so that the service life of the oil seal is prolonged, the replacement frequency of the oil seal is reduced, and the influence on production is reduced.
Description
Technical Field
The utility model relates to the technical field of oil seals, in particular to a combined oil seal.
Background
Oil seals are a common term for seals, simply the seal of lubricating oil. It is a mechanical element used to contain grease (oil is the most common liquid substance in transmission systems, also generally referred to as a liquid substance).
In the related art, the transmission shaft is usually oil-sealed by using a single oil seal, and a lip of the oil seal is sleeved around the transmission shaft to isolate components needing lubrication from output components at two ends of the transmission shaft.
With respect to the above-described related art, the inventors consider that: a lip and the transmission shaft laminating of oil blanket are not hard up owing to the continuous motion of transmission shaft at the in-process of actual work to single oil seal piece, and then lead to there being the rheumatism little, simultaneously because the corruption of lubricated liquid to oil seal piece lip leads to oil seal piece structural damage, makes the oil blanket inefficacy.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a combined oil seal, in which a double-layer oil seal is disposed in a shorter axial space by disposing a sleeve connection of an inner oil seal framework and an outer oil seal framework, an inner oil seal lip seals and blocks lubricating oil first, and when the inner oil seal lip is damaged due to wear and corrosion of the lubricating oil, the outer oil seal lip continues to block the lubricating oil, thereby improving the service life of the oil seal, reducing the replacement frequency of the oil seal, and reducing the influence on production.
In order to achieve the above objects and other related objects, the present invention provides a combined oil seal, which includes an outer oil seal frame and an inner oil seal frame; the outer oil seal framework and the inner oil seal framework are both in a bowl shape, the bowl-shaped opening ends of the outer oil seal framework and the inner oil seal framework face opposite directions, and the outer oil seal framework is sleeved on the outer side of the inner oil seal framework; an outer oil seal through hole is formed in the bowl-shaped bowl bottom of the outer oil seal framework, and an outer oil seal lip is arranged at the outer oil seal through hole; an inner oil seal through hole is formed in the bowl-shaped bowl bottom of the inner oil seal framework, and an inner oil seal lip is arranged at the inner oil seal through hole.
Further, the inner oil seal framework is in interference fit with the outer oil seal framework.
Furthermore, an inner oil seal rubber layer is fixedly arranged on the outer side wall of the inner oil seal framework.
Furthermore, a plurality of annular grooves are formed in the circumferential side wall of the inner oil seal rubber layer.
Furthermore, be equipped with on the outer oil blanket lip and hinder oil lip and dust lip, hinder oil lip and be located one side that the dust lip is close to the inner oil blanket lip.
Furthermore, an annular mounting groove is formed in the side wall, away from the axis of the outer oil seal through hole, of the outer oil seal lip, and an oil seal spring is sleeved in the annular mounting groove.
As described above, the present invention has at least the following advantageous effects:
1. through the installation of cup jointing that sets up interior oil blanket skeleton and outer oil blanket skeleton, oil blanket lip and outer oil blanket lip in setting up in shorter axial space, form two-layer seal structure, when the seal structure of interior oil blanket lip damages because reasons such as wearing and tearing and corruption, seal structure through outer oil blanket lip continues to play the sealed effect, thereby very big extension the life-span of oil blanket, and because the oil blanket wholly has interior oil blanket skeleton and outer oil blanket skeleton assembly to make, two parts can make alone, and two parts of independent manufacturing are simple in structure all, make whole manufacturing cost lower. Meanwhile, the structure of separating the inner oil seal from the outer oil seal facilitates the arrangement of a corresponding functional structure in the oil seal;
2. the inner oil seal framework and the outer oil seal framework are in interference fit, so that the mounting steps are simplified, and the mounting firmness of the inner oil seal framework and the outer oil seal framework is improved;
3. the friction force between the inner oil seal framework and the outer oil seal framework is improved by arranging the inner oil seal rubber layer, and the inner oil seal framework and the outer oil seal framework are easier to install due to certain elasticity of rubber;
4. the annular groove is arranged, so that the connection strength of the inner oil seal framework and the outer oil seal framework is further improved, and the possibility of mechanical failure caused by the separation of the inner oil seal framework and the outer oil seal framework in the use process is reduced;
5. the dust lip is arranged to reduce the condition that dust and foreign matters invade from the outer side of the oil seal to scratch and pollute the lip of the oil seal or the surface of the shaft;
6. through setting up the oil blanket spring, the elasticity of oil blanket spring acts on and hinders the oil lip, makes and hinders the oil lip and tighten up to the direction at transmission shaft place to promoted the lip and embraced tight power, promoted sealed effect.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating the structure of each part of a combination oil seal according to a first embodiment of the present invention.
Description of reference numerals:
1. an outer oil seal framework; 11. an outer oil seal through hole; 12. an outer oil seal lip; 121. an oil blocking lip; 122. a dust lip; 13. an outer oil seal rubber layer; 14. an annular mounting groove; 141. an oil seal spring; 2. an inner oil seal framework; 21. an inner oil seal through hole; 22. an inner oil seal lip; 23. an inner oil seal rubber layer; 231. an annular groove; 10 drive shaft.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Referring to fig. 1, the present invention provides a combined oil seal, which includes an inner oil seal framework 2 and an outer oil seal framework 1 assembled together, wherein an inner oil seal lip 22 is disposed on the inner oil seal framework 2, an outer oil seal lip 12 is disposed on the outer oil seal framework 1, the outer oil seal lip 12 and the inner oil seal lip 22 are coaxially disposed, and the inner oil seal lip 22 faces a lubricating side and firstly blocks a lubricating fluid. Interior oil blanket skeleton 2 and outer oil blanket skeleton 1 all are the bowl form, and outer oil blanket skeleton 1 diameter is greater than interior oil blanket skeleton 2, and outer oil blanket skeleton 1 and the 2 bowl mouths of interior oil blanket skeleton are in the same place in the opposite lock, and 1 covers of outer oil blanket skeleton are established in the outside of interior oil blanket skeleton 2 to when having increased outer oil blanket skeleton 1 and 2 area of contact of interior oil blanket skeleton promote the firm degree of installation, reduced the size that occupies axial space.
The outer side of the inner oil seal framework 2 is wrapped with an inner oil seal rubber layer 23, the outer side of the outer oil seal framework 1 is wrapped with an outer oil seal rubber layer 13, a plurality of annular grooves 231 are arranged on the circumferential side wall of the inner oil seal rubber layer 23, and the annular grooves 231 are evenly distributed along the axial direction of the inner oil seal framework 2. The interference fit of the inner oil seal framework 2 and the outer oil seal framework 1 realizes stable assembly, the inner oil seal rubber layer 23 is compressed and generates elastic deformation, and then larger positive pressure is generated, and larger static friction force is brought to realize firm connection.
The inner oil seal framework 2 is positioned at the bottom of the bowl and is provided with an inner oil seal through hole 21, and an inner oil seal lip 22 is fixedly arranged on the hole wall of the inner oil seal through hole 21. The outer oil seal framework 1 is positioned at the bottom of the bowl and is provided with an outer oil seal through hole 11, an outer oil seal lip 12 is fixedly arranged on the hole wall of the outer oil seal through hole 11, and the outer oil seal lip 12 extends towards the inner side of the bowl of the outer oil seal framework 1. The end of the outer oil seal lip 12 close to the outer oil seal through hole 11 is fixedly provided with a dust lip 122, and the end far away from the outer oil seal through hole 11 is provided with an oil blocking lip 121. When the combined oil seal is mounted on the transmission shaft, the oil blocking lip 121, the dust preventing lip 122 and the inner oil seal lip 22 are all abutted against the transmission shaft.
The inner oil seal lip 22 and the outer oil seal lip 12 are both made of teflon materials, so that the wear resistance and corrosion resistance are improved, and the service life of the combined oil seal is further prolonged.
Set up on the circumference lateral wall that hinders oil lip 121 and encircle the annular mounting groove 14 that hinders oil lip 121, the oil blanket spring 141 is equipped with to annular mounting groove 14 endotheca, and oil blanket spring 141 supports tightly and hinders oil lip 121 to the messenger hinders oil lip 121 and tightens up to the axis direction of transmission shaft, holds tightly and laminates the transmission shaft lateral wall, realizes more reliable sealed effect.
The implementation principle of the embodiment is as follows:
through the installation of cup jointing that sets up interior oil blanket skeleton 2 and outer oil blanket skeleton 1, oil blanket lip 22 and outer oil blanket lip 12 in setting up in shorter axial space, form two-layer seal structure, when the seal structure of interior oil blanket lip 22 damaged because reasons such as wearing and tearing and corruption, seal structure through outer oil blanket lip 12 continues to play sealed effect, thereby very big extension the life-span of oil blanket, and because the oil blanket wholly has interior oil blanket skeleton 2 and 1 assembly of outer oil blanket skeleton to make, two parts can make alone, and two parts of independent manufacturing are simple in structure all, make whole manufacturing cost lower. Meanwhile, the structure of separating the inner oil seal from the outer oil seal facilitates the arrangement of a corresponding functional structure in the oil seal;
the inner oil seal framework 2 and the outer oil seal framework 1 are in interference fit, so that the mounting steps are simplified, and the mounting firmness of the inner oil seal framework 2 and the outer oil seal framework 1 is improved;
the friction force between the inner oil seal framework 2 and the outer oil seal framework 1 is improved by arranging the inner oil seal rubber layer 23, and the inner oil seal framework 2 and the outer oil seal framework 1 are easier to install due to certain elasticity of rubber;
the annular groove 231 is arranged, so that the connection strength of the inner oil seal framework 2 and the outer oil seal framework 1 is further improved, and the possibility of mechanical failure caused by the separation of the inner oil seal framework and the outer oil seal framework in the use process is reduced;
the dust lip 122 is arranged to reduce the condition that dust and foreign matters invade from the outer side of the oil seal to scratch and pollute the lip mouth of the oil seal or the surface of a shaft;
through setting up oil blanket spring 141, oil blanket spring 141's elasticity acts on and hinders oil lip 121, makes and hinders oil lip 121 and tighten up to the transmission shaft place direction to promoted the lip and embraced the power of tightly, promoted sealed effect.
Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A combination oil blanket which characterized in that: comprises an outer oil seal framework (1) and an inner oil seal framework (2);
the outer oil seal framework (1) and the inner oil seal framework (2) are both in a bowl shape, the open ends of the bowl shapes of the outer oil seal framework (1) and the inner oil seal framework (2) face opposite directions, and the outer oil seal framework (1) is sleeved on the outer side of the inner oil seal framework (2);
an outer oil seal through hole (11) is formed in the bowl-shaped bowl bottom of the outer oil seal framework (1), and an outer oil seal lip (12) is formed in the outer oil seal through hole (11);
an inner oil seal through hole (21) is formed in the bowl bottom of the bowl-shaped inner oil seal framework (2), and an inner oil seal lip (22) is formed in the inner oil seal through hole (21).
2. The combination oil seal of claim 1, wherein: the inner oil seal framework (2) is in interference fit with the outer oil seal framework (1).
3. A combination oil seal according to claim 2, wherein: and an inner oil seal rubber layer (23) is fixedly arranged on the outer side wall of the inner oil seal framework (2).
4. A combination oil seal according to claim 3, wherein: and a plurality of annular grooves (231) are arranged on the circumferential side wall of the inner oil seal rubber layer (23).
5. The combination oil seal of claim 1, wherein: the outer oil seal lip (12) is provided with an oil blocking lip (121) and a dust preventing lip (122), and the oil blocking lip (121) is located on one side, close to the inner oil seal lip (22), of the dust preventing lip (122).
6. The combination oil seal of claim 5, wherein: the side wall of the outer oil seal lip (12) departing from the axis of the outer oil seal through hole (11) is provided with an annular mounting groove (14), and an oil seal spring (141) is sleeved in the annular mounting groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019931.4U CN215634978U (en) | 2021-08-25 | 2021-08-25 | Combined oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019931.4U CN215634978U (en) | 2021-08-25 | 2021-08-25 | Combined oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215634978U true CN215634978U (en) | 2022-01-25 |
Family
ID=79902239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122019931.4U Expired - Fee Related CN215634978U (en) | 2021-08-25 | 2021-08-25 | Combined oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215634978U (en) |
-
2021
- 2021-08-25 CN CN202122019931.4U patent/CN215634978U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220125 |