CN215567362U - Automobile wheel hub bearing wedge seal structure - Google Patents
Automobile wheel hub bearing wedge seal structure Download PDFInfo
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- CN215567362U CN215567362U CN202121198337.XU CN202121198337U CN215567362U CN 215567362 U CN215567362 U CN 215567362U CN 202121198337 U CN202121198337 U CN 202121198337U CN 215567362 U CN215567362 U CN 215567362U
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- sealing ring
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Abstract
The utility model discloses a wedge-shaped sealing structure of an automobile hub bearing, which comprises an inner ring, an outer ring and a small inner ring, wherein a sealing assembly is arranged between the outer ring and the small inner ring, the sealing assembly comprises a first sealing framework fixed on the outer ring and a second sealing framework fixed on the small inner ring, the upper end of the second sealing framework is bent to form a bent part, a sealing ring is arranged on the first sealing framework, one surface of the sealing ring, facing the bent part, is an inclined surface, a wedge-shaped channel is formed between the sealing ring and the bent part by the inclined surface, and the section area of the wedge-shaped channel is gradually reduced along the muddy water entering direction. According to the utility model, through the arrangement of the wedge-shaped channel, the rotation of the sealing assembly and the increase of the internal pressure during the work, the kinetic energy of muddy water entering the wedge-shaped channel can be greatly weakened, the muddy water is prevented from directly impacting the working lip of the sealing ring after entering, the sealing performance of the hub bearing is improved, the service life of the hub bearing is prolonged, the integral structure is simple, and the manufacture is convenient.
Description
Technical Field
The utility model relates to the technical field of automobile bearings, in particular to a wedge-shaped sealing structure of an automobile hub bearing.
Background
The sealing structure of the traditional automobile hub bearing unit mainly comprises an outer ring, an inner ring and a sealing assembly, wherein the sealing assembly is assembled by matching a sealing ring with a sealing cover framework and then is pressed on an automobile hub bearing to ensure the sealing performance in the using process.
However, in the conventional sealing assembly, as shown in fig. 1, the sealing ring is fixed on the first framework 41, the second framework 42 is in an L-shaped structure, a muddy water inlet 43 is formed between the sealing ring and the second framework 42, muddy water can easily enter a region between the first framework 41 and the second framework 42 through the muddy water inlet 43 during the driving of an automobile, and the muddy water can directly impact a working lip of the sealing structure after entering the working lip, so that the wear and the aging of the lip rubber are accelerated, and therefore, the improvement of the sealing assembly is urgently needed.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides a wedge-shaped sealing structure of an automobile hub bearing, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides an automobile wheel hub bearing wedge seal structure, includes inner circle, outer lane and little inner circle, establish sealing assembly between outer lane and the little inner circle, sealing assembly include with the first sealed skeleton that the outer lane cooperation is connected and with the sealed skeleton of second that little inner circle cooperation is connected, form the kink after the upper end of the sealed skeleton of second is bent, establish the sealing washer on the first sealed skeleton, this sealing washer orientation the one side of kink is the inclined plane, and this inclined plane makes the sealing washer with form the wedge passageway between the kink, the cross sectional area of this wedge passageway reduces along muddy water entering direction gradually.
Above-mentioned technical scheme, through the setting of wedge passageway, in addition during operation seal assembly is rotatory, internal pressure gathers and increases, can be very big weaken muddy water and get into the kinetic energy of wedge passageway, prevent that muddy water from directly impacting the work lip of sealing washer after getting into, improved the sealing performance of wheel hub bearing.
Preferably, the sealing ring is provided with a protrusion towards one end of the outer ring, the protrusion is in interference fit with the outer ring, and a gap is formed between the protrusion and the first sealing framework and between the protrusion and the outer ring.
According to the scheme, the sealing ring is generally made of an elastic rubber material, and can deform when being radially extruded during installation, the gap between the protrusion and the first sealing framework and the outer ring can accommodate the rubber of the protrusion after deformation during installation, and meanwhile, the deformation of a working lip of the sealing ring after installation is reduced, so that the friction torque of the sealing assembly is reduced, and the friction torque performance of the hub bearing is reduced.
Preferably, establish first lip and second lip on the sealing washer, first lip presses on the supporting part of second sealing skeleton, the second lip presses on the lower portion of bending of second sealing skeleton.
According to the scheme, the first lip is used for resisting a small amount of muddy water invaded through the wedge-shaped channel, the muddy water is prevented from entering the inside of the bearing, and the second lip is used for blocking the loss of lubricating grease of the hub bearing channel.
Preferably, a magnetic sealing ring is arranged on the second sealing framework and is in interference fit with the small inner ring.
Preferably, the upper end of the magnetic sealing ring is bent to form a sealing ring bending part, the sealing ring bending part is attached to the bending part, and the wedge-shaped channel is formed between the sealing ring bending part and the inclined plane on the sealing ring.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through the arrangement of the wedge-shaped channel, the rotation of the sealing assembly and the increase of the internal pressure during the work, the kinetic energy of muddy water entering the wedge-shaped channel can be greatly weakened, the muddy water is prevented from directly impacting the working lip of the sealing ring after entering, the sealing performance of the hub bearing is improved, the service life of the hub bearing is prolonged, the integral structure is simple, and the manufacture is convenient.
Description of the drawings:
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an enlarged view at X in FIG. 2;
fig. 4 is an enlarged view at Y in fig. 3.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The wedge-shaped sealing structure of the automobile hub bearing shown in the attached figures 2-4 comprises an inner ring 1, an outer ring 2 and a small inner ring 3, wherein a sealing assembly is arranged between the outer ring 2 and the small inner ring 3, the sealing assembly comprises a first sealing framework 4 connected with the outer ring 2 in a matched manner and a second sealing framework 5 connected with the small inner ring 3 in a matched manner, the cross section of the first sealing framework 4 is of an inverted L-shaped structure, a sealing ring 6 is arranged on the first sealing framework 4, the second sealing framework 5 comprises a supporting part, a lower bending part is formed after the lower end of the supporting part is bent for 90 degrees and is connected and matched with the small inner ring 3, a bending part 51 is formed after the upper end of the supporting part is bent for 90 degrees, the cross section of the second sealing framework 5 is integrally of a C-shaped structure, one surface of the sealing ring 6 facing the bending part 51 is an inclined surface, an included angle between the inclined surface and an axial lead of the outer ring 2 is 5-10 degrees, and the inclined surface enables a wedge-shaped channel 8 to be formed between the sealing ring 6 and the bending part 51, the cross-sectional area of the wedge-shaped passage 8 gradually decreases in the muddy water entering direction.
Establish first lip 62 and second lip 63 on sealing washer 6, first lip 62 presses on the supporting part of second seal skeleton 5 for resist a small amount of muddy water through the invasion of wedge passageway, second lip 63 presses on the portion of bending down of second seal skeleton 5, is used for blockking the loss of wheel hub bearing channel lubricating grease.
The first sealing framework and the outer ring are in a static sealing state in an interference fit mode for a long time, and after long-time muddy water washing, the sealing function of the part is greatly weakened. In the past, the sealing performance of the bearing is usually enhanced by increasing the interference between the lip and the contact part so as to improve the contact pressure, but the increase of the interference undoubtedly leads to the increase of the friction moment of the bearing.
Therefore, in this embodiment, the end of the sealing ring 6 facing the outer ring 2 is provided with the protrusion 61, the protrusion 61 is in interference fit with the outer ring 2, the static sealing function of the sealing ring 6 and the outer ring 2 is improved, and external muddy water is prevented from directly entering from a gap between the sealing ring 6 and the outer ring 2, in this embodiment, a gap 9 is formed between the protrusion 61 and the first sealing framework 41 and between the protrusion and the outer ring 2, when the sealing ring 6 is installed, the superelasticity material rubber can be radially extruded, the deformation of the periphery of the sealing ring is large, the gap 9 can be used for filling the deformed rubber, and the deformation of the second lip 63 after installation is reduced, so that the friction torque of the sealing structure is reduced, the friction torque performance of the hub bearing is reduced, and the endurance mileage of a new energy automobile is increased.
As an extension, a magnetic sealing ring 7 is arranged on the second sealing framework 5, one end of the magnetic sealing ring 7 is in interference fit with the small inner ring 3, the other end of the magnetic sealing ring 7 is bent for 90 degrees to form a sealing ring bending part, the sealing ring bending part is flush with the end part of the bending part 51, the sealing ring bending part is attached to the outside of the bending part 51, the wedge-shaped channel 8 is formed between the sealing ring bending part and the inclined plane on the sealing ring 6, and the cross-sectional area of the wedge-shaped channel 8 is gradually reduced along the muddy water entering direction.
According to the embodiment, the sealing performance of the hub bearing is improved, the friction torque of the hub bearing is reduced, the energy consumption of the whole vehicle can be reduced, the endurance mileage of the new energy vehicle is increased, and the purposes of energy conservation and emission reduction are achieved.
Reference is made to the prior art which is not specifically described above.
The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides an automobile wheel hub bearing wedge seal structure, includes inner circle (1), outer lane (2) and little inner circle (3), establish seal assembly, its characterized in that between outer lane (2) and little inner circle (3): the sealing assembly comprises a first sealing framework (4) connected with the outer ring (2) in a matched mode and a second sealing framework (5) connected with the small inner ring (3) in a matched mode, a bending portion (51) is formed after the upper end of the second sealing framework (5) is bent, a sealing ring (6) is arranged on the first sealing framework (4), the sealing ring (6) faces towards one side of the bending portion (51) and is an inclined surface, the inclined surface enables the sealing ring (6) and the bending portion (51) to form a wedge-shaped channel (8), and the section area of the wedge-shaped channel (8) is gradually reduced along the muddy water entering direction.
2. The wedge-shaped sealing structure for the automobile hub bearing according to claim 1, characterized in that: sealing washer (6) orientation the one end of outer lane (2) is equipped with arch (61), this arch (61) with outer lane (2) interference fit, just arch (61) with first sealed skeleton (41) with form space (9) between outer lane (2).
3. The wedge-shaped sealing structure for the automobile hub bearing according to claim 2, characterized in that: establish first lip (62) and second lip (63) on sealing washer (6), first lip (62) press on the supporting part of the sealed skeleton of second (5), second lip (63) press on the lower portion of bending of the sealed skeleton of second (5).
4. The wedge-shaped sealing structure for the automobile hub bearing according to any one of claims 1 to 3, characterized in that: and a magnetic sealing ring (7) is arranged on the second sealing framework (5), and the magnetic sealing ring (7) is in interference fit with the small inner ring (3).
5. The wedge-shaped sealing structure for the automobile hub bearing according to claim 4, wherein: the upper end of the magnetic sealing ring (7) is bent to form a sealing ring bending part, the sealing ring bending part is attached to the bending part (51), and the wedge-shaped channel (8) is formed between the sealing ring bending part and the inclined plane on the sealing ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121198337.XU CN215567362U (en) | 2021-05-31 | 2021-05-31 | Automobile wheel hub bearing wedge seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121198337.XU CN215567362U (en) | 2021-05-31 | 2021-05-31 | Automobile wheel hub bearing wedge seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567362U true CN215567362U (en) | 2022-01-18 |
Family
ID=79865157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121198337.XU Active CN215567362U (en) | 2021-05-31 | 2021-05-31 | Automobile wheel hub bearing wedge seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567362U (en) |
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2021
- 2021-05-31 CN CN202121198337.XU patent/CN215567362U/en active Active
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