CN216643083U - Axial combined oil seal with radial sealing function - Google Patents
Axial combined oil seal with radial sealing function Download PDFInfo
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- CN216643083U CN216643083U CN202122487546.2U CN202122487546U CN216643083U CN 216643083 U CN216643083 U CN 216643083U CN 202122487546 U CN202122487546 U CN 202122487546U CN 216643083 U CN216643083 U CN 216643083U
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Abstract
The utility model discloses an axial combined oil seal with a radial sealing function, which comprises an outer oil seal framework and an inner oil seal framework, wherein the outer oil seal framework is arranged outside the inner oil seal framework, an elastic sealing body is sleeved between the outer oil seal framework and the inner oil seal framework, a flexible dust ring is connected between the inner oil seal framework and the elastic sealing body, a first sealing lip is sleeved on the inner oil seal framework, a plurality of accommodating grooves are formed in the inner side wall of the inner oil seal framework, the first sealing lip comprises an annular connecting part and a tooth-shaped sealing part, and the annular connecting part and the tooth-shaped sealing part are integrally arranged. The utility model utilizes the arrangement mode that the inner oil seal framework is matched with the first sealing lip, and a plurality of equidistant annular sealing bulges are formed by the tooth-shaped sealing part of the first sealing lip, so that the low-friction design ensures the radial sealing of a product and simultaneously avoids the leakage caused by radial jumping, the radial sealing performance of the shaft body is improved on the basis of axial sealing, and the reliability of the radial sealing is improved.
Description
Technical Field
The utility model relates to the field of axial combined oil seals, in particular to an axial combined oil seal with a radial sealing function.
Background
At present, a lot of practical application schemes exist in the design of the front oil seal and the rear oil seal of the crankshaft, but due to the structure of the front oil seal and the rear oil seal of the crankshaft, which are used in the market, have excellent performance on meeting the sealing performance of lubricating oil, but a combined oil seal which simultaneously meets the radial sealing performance and the axial sealing performance does not exist. Under the condition that the shaft is jumped and the installation eccentricity is large, the radial sealing capability of the prior product technology can not meet the requirement, so that the application of the oil seal with the prior structure on an automobile is limited. Based on this, we developed a special axial combination oil seal with radial sealing function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an axial combined oil seal with a radial sealing function, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: an axial combined oil seal with a radial sealing function comprises an outer oil seal framework and an inner oil seal framework, wherein the outer oil seal framework is arranged outside the inner oil seal framework, an elastic sealing body is sleeved between the outer oil seal framework and the inner oil seal framework, a flexible dust ring is connected between the inner oil seal framework and the elastic sealing body, a first sealing lip is sleeved outside the inner oil seal framework, and a plurality of accommodating grooves are formed in the inner side wall of the inner oil seal framework;
the first sealing lip comprises an annular connecting part and a tooth-shaped sealing part, and the annular connecting part and the tooth-shaped sealing part are integrally arranged.
Preferably, the annular connecting part is connected between the elastic sealing body and the flexible dustproof ring, and the section of the inner side wall of the tooth-shaped sealing part close to the inner oil seal framework is in a shape of inverted tooth.
Preferably, the flexible dustproof ring is made of non-woven fabrics, and the bottom between the inner oil seal framework and the elastic sealing body is sleeved with the flexible dustproof ring.
Preferably, a plurality of the accommodating grooves are equidistantly arranged, and the positions of the accommodating grooves correspond to the position of the first sealing lip.
Preferably, the top of the inner side wall of the inner oil seal framework is fixedly sleeved with a second sealing lip, and the inner side wall of the second sealing lip and the outer side wall of the elastic sealing body are both provided with corrugated bulges.
Preferably, the top of the outer side wall of the elastic sealing body is provided with a mounting groove, and a spring ring is sleeved in the mounting groove.
Preferably, the elastic sealing body and the second sealing lip are both made of elastic materials.
The utility model has the technical effects and advantages that:
(1) according to the utility model, the inner oil seal framework and the first sealing lip are matched, and a plurality of equidistant annular sealing bulges are formed by the tooth-shaped sealing part of the first sealing lip, so that the low-friction design ensures radial sealing of a product and avoids leakage caused by radial jumping, the radial sealing property of the shaft body is increased on the basis of axial sealing, and the reliability of radial sealing is improved;
(2) according to the utility model, by utilizing the arrangement mode that the inner oil seal framework is matched with the second sealing lip, when the inner oil seal framework is matched outside the shaft body, the corrugated bulge on the second sealing lip is in extrusion fit with the outer wall of the shaft body, so that the interference fit with the shaft body is realized, and the reliable sealing between a product and the shaft body is ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
FIG. 2 is an enlarged schematic view of the point A in FIG. 1 according to the present invention.
In the figure: 1. an outer oil seal framework; 2. an inner oil seal framework; 3. an elastic sealing body; 4. a flexible dust ring; 5. a first seal lip; 6. an accommodation groove; 7. a second sealing lip; 8. a spring ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an axial combined oil seal with a radial sealing function as shown in figure 1-2, which comprises an outer oil seal framework 1 and an inner oil seal framework 2, wherein the outer oil seal framework 1 is arranged outside the inner oil seal framework 2, an elastic sealing body 3 is sleeved between the outer oil seal framework 1 and the inner oil seal framework 2, a flexible dust ring 4 is connected between the inner oil seal framework 2 and the elastic sealing body 3, the flexible dust ring 4 is made of non-woven fabric, the flexible dust ring 4 is sleeved at the bottom between the inner oil seal framework 2 and the elastic sealing body 3, the flexible dust ring 4 is connected between the inner oil seal framework 2 and the elastic sealing body 3, so that dust can be conveniently isolated through the flexible dust ring 4, external dust is prevented from entering between the inner oil seal framework 2 and the elastic sealing body 3, the inner side wall of the inner oil seal framework 2 is provided with a plurality of accommodating grooves 6, the plurality of accommodating grooves 6 are arranged at equal intervals, a plurality of positions that hold slot 6 are corresponding with the position of first seal lip 5, and the cross-section that holds slot 6 is triangle-shaped, and the whole that holds slot 6 is the annular, is convenient for save sealing paint, through holding seting up of slot 6, when the sealed paint of spraying on the inner oil blanket skeleton 2, prevents to assemble the fish tail sealed axle, and the holding slot 6 that the equidistance was seted up is favorable to storing sealing paint, forms the quiet sealing strip of multichannel to improve quiet sealing ability.
The outside cover of interior oil blanket skeleton 2 is equipped with first seal lip 5, first seal lip 5 includes annular connecting portion and profile of tooth sealing, through annular connecting portion, be convenient for be connected the relative position between elastic sealing body 3 and the flexible dust ring 4, annular connecting portion are the integration setting with profile of tooth sealing, annular connecting portion connect between elastic sealing body 3 and flexible dust ring 4, the profile of tooth sealing is close to 2 directions inside wall cross-sections of interior oil blanket skeleton and is the pawl form, the arch of pawl form can be with 2 extrusion fit of interior oil blanket skeleton, thereby guarantee the leakproofness between interior oil blanket skeleton 2 and the first seal lip 5, and this kind of low friction design, when guaranteeing product radial seal, also avoid the leakage that the radial runout arouses.
The fixed second seal lip 7 that has cup jointed in top of 2 inside walls of inner oil seal skeleton, the inside wall of second seal lip 7 and the lateral wall of elastic seal body 3 all are provided with the corrugated arch, when the outside with 2 cooperation of inner oil seal skeleton at the axis body, corrugated arch and axis body outer wall extrusion fit on the second seal lip 7, thereby realize the interference fit with the axis body, guarantee reliable sealed between product and the axis body, the material of elastic seal body 3 and second seal lip 7 is the elasticity material, the material of elastic seal body 3 and second seal lip 7 can be polytetrafluoroethylene, also can be rubber, thereby be convenient for produce elastic deformation, so that carry out extrusion fit with axis body or other parts.
The mounting groove has been seted up at the top of 3 lateral walls of elastic seal body, and the inside cover of mounting groove is equipped with spring ring 8, through seting up of mounting groove, is convenient for install spacing to spring ring 8 for spring ring 8 can assemble at elastic seal body 3's top, can compensate off-centre through spring ring 8, has improved pivoted stability well.
The working principle of the utility model is as follows:
in use, a plurality of equidistance annular seals that the profile of tooth sealing part through first seal lip 5 formed are protruding, first seal lip 5 and 2 area of contact of inner oil blanket skeleton have been reduced, thereby make this kind of low friction design, when guaranteeing product radial seal, also avoid the leakage that the runout arouses, increase the radial leakproofness to the axis body on the axial seal basis, improve the radial seal reliability, offer through holding slot 6, when spraying sealing paint on inner oil blanket skeleton 2, prevent to assemble the fish tail sealed axle, and the holding slot 6 that the equidistance was seted up is favorable to storing sealing paint, form multichannel static sealing strip, in order to improve static sealing ability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. An axial combined oil seal with a radial sealing function comprises an outer oil seal framework (1) and an inner oil seal framework (2), wherein the outer oil seal framework (1) is arranged outside the inner oil seal framework (2), and is characterized in that an elastic sealing body (3) is sleeved between the outer oil seal framework (1) and the inner oil seal framework (2), a flexible dust ring (4) is connected between the inner oil seal framework (2) and the elastic sealing body (3), a first sealing lip (5) is sleeved outside the inner oil seal framework (2), and a plurality of accommodating grooves (6) are formed in the inner side wall of the inner oil seal framework (2);
the first sealing lip (5) comprises an annular connecting part and a tooth-shaped sealing part, and the annular connecting part and the tooth-shaped sealing part are integrally arranged.
2. The axial combination oil seal with the radial sealing function as claimed in claim 1, wherein the annular connecting portion is connected between the elastic sealing body (3) and the flexible dust ring (4), and the section of the inner side wall of the tooth-shaped sealing portion close to the inner oil seal framework (2) is inverted tooth-shaped.
3. The axial combined oil seal with the radial sealing function as claimed in claim 1, wherein the flexible dust ring (4) is made of non-woven fabric, and the flexible dust ring (4) is sleeved on the bottom between the inner oil seal framework (2) and the elastic sealing body (3).
4. The axial combination oil seal with radial sealing function of claim 1, characterized in that a plurality of said receiving grooves (6) are arranged at equal intervals, and the positions of a plurality of said receiving grooves (6) correspond to the positions of the first sealing lip (5).
5. The axial combined oil seal with the radial sealing function as claimed in claim 1, wherein a second sealing lip (7) is fixedly sleeved on the top of the inner side wall of the inner oil seal framework (2), and corrugated bulges are arranged on both the inner side wall of the second sealing lip (7) and the outer side wall of the elastic sealing body (3).
6. The axial combined oil seal with the radial sealing function as claimed in claim 1, wherein a mounting groove is formed in the top of the outer side wall of the elastic sealing body (3), and a spring ring (8) is sleeved inside the mounting groove.
7. The axial combination oil seal with radial sealing function as claimed in claim 1, wherein the elastic sealing body (3) and the second sealing lip (7) are made of elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487546.2U CN216643083U (en) | 2021-10-15 | 2021-10-15 | Axial combined oil seal with radial sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487546.2U CN216643083U (en) | 2021-10-15 | 2021-10-15 | Axial combined oil seal with radial sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216643083U true CN216643083U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122487546.2U Active CN216643083U (en) | 2021-10-15 | 2021-10-15 | Axial combined oil seal with radial sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216643083U (en) |
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2021
- 2021-10-15 CN CN202122487546.2U patent/CN216643083U/en active Active
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