CN210859575U - Combined sealing structure of hub bearing unit - Google Patents
Combined sealing structure of hub bearing unit Download PDFInfo
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- CN210859575U CN210859575U CN201921177496.4U CN201921177496U CN210859575U CN 210859575 U CN210859575 U CN 210859575U CN 201921177496 U CN201921177496 U CN 201921177496U CN 210859575 U CN210859575 U CN 210859575U
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- hub bearing
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Abstract
The utility model aims to solve the technical problem that a wheel hub bearing unit combination formula seal structure is provided to optimize the sealing performance of wheel hub bearing. A wheel hub bearing unit combination formula seal structure, form the water storage space between first seal portion and the second seal portion, this water storage space is used for holding water or impurity that gets into in the water storage space, in this scheme can avoid water or impurity to get into the wheel hub bearing effectively to combination formula seal structure's sealing performance has been optimized. The water storage space is communicated with the outside through the labyrinth seal channel, and in the rotating process of the hub bearing, water or impurities in the water storage space are discharged through the labyrinth seal channel under the action of centrifugal force, so that the water or the impurities can be effectively prevented from entering the hub bearing, and the sealing performance of the combined seal structure is optimized. The water storage space is communicated with the outside through the labyrinth seal structure, and external impurities or water are not easy to enter the water storage space.
Description
Technical Field
The utility model relates to an auto-parts especially relates to a wheel hub bearing unit combination formula seal structure, belongs to sealed field.
Background
The hub bearing unit is a main part of an automobile, and the service life and the service performance of the hub bearing are determined by the sealing performance of the hub bearing. The sealing of the hub bearing is mainly used to prevent water or impurities from entering the inside of the hub bearing to accelerate the wear of the hub bearing, and for this reason, the hub bearing should be well sealed. Because the hub bearing needs to rotate in the working process, the friction torque of the sealing structure is controlled on the premise of ensuring the sealing performance of the hub bearing.
The sealing element applied to the hub bearing in the prior art is simple in structure and poor in sealing performance in the actual use process, for example, water or impurities are easy to accumulate at a position close to the hub bearing, and the impurities easily enter the hub bearing in the long-term use process to influence the use performance of the hub bearing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wheel hub bearing unit combination formula seal structure is provided to optimize the sealing performance of wheel hub bearing.
The utility model provides a technical scheme that above-mentioned technical problem adopted is:
the utility model provides a wheel hub bearing unit combination formula seal structure for wheel hub bearing unit is inboard, including first seal part and with first seal part complex second seal part, first seal part includes skeleton one and skeleton two skeleton one with be provided with magnetic rubber spare between the skeleton two, second seal part includes skeleton three the parcel has the sealing member on the skeleton three, first seal part with form the water storage space between the second seal part, the water storage space communicates with each other with the external world through labyrinth seal passageway.
A wheel hub bearing unit combination formula seal structure, form the water storage space between first seal portion and the second seal portion, this water storage space is used for holding water or impurity that gets into in the water storage space, in this scheme can avoid water or impurity to get into the wheel hub bearing effectively to combination formula seal structure's sealing performance has been optimized. The water storage space is communicated with the outside through the labyrinth seal channel, and in the rotating process of the hub bearing, water or impurities in the water storage space are discharged through the labyrinth seal channel under the action of centrifugal force, so that the water or the impurities can be effectively prevented from entering the hub bearing, and the sealing performance of the combined seal structure is optimized. The water storage space is communicated with the outside through the labyrinth seal structure, and external impurities or water are not easy to enter the water storage space, so that the performance of the combined seal structure is optimized.
Preferably, the distance between the water storage space and the axis of the hub bearing unit is not less than 2 cm.
The farther the distance between the water storage space and the axis of the hub bearing unit is, the larger the centrifugal force is, and water or impurities in the water storage space are easier to discharge.
Preferably, the magnetic rubber part is provided with at least one first rib protruding towards the three directions of the framework, the sealing part is provided with at least two second ribs protruding towards the direction of the magnetic rubber part, and the first ribs and the second ribs are matched to form a labyrinth sealing channel.
The first rib and the second rib are matched to form a labyrinth type sealing channel, so that the structure of the combined sealing structure is simplified, and the manufacturing cost of the combined sealing structure is reduced.
Preferably, the sealing element is provided with a convex ring which protrudes out of the sealing element along the diameter direction of the hub bearing, and the convex ring protrudes out of the sealing element towards the direction far away from the water storage space.
The arrangement of the convex ring enables outside water or impurities not to easily enter the water storage space, and the sealing performance of the combined sealing structure is optimized.
Preferably, the sealing element is provided with a convex part which protrudes out of the sealing element along the axial direction of the hub bearing, and the convex part protrudes out of the sealing element towards the direction far away from the first framework.
The arrangement of the convex part enables the superposed structure to be convenient for assembly or disassembly, and is beneficial to the maintenance of the combined sealing structure.
Preferably, skeleton one and skeleton two all include the assembly portion parallel with wheel hub bearing axis direction, are located assembly portion on the skeleton one with be located assembly portion interference fit on the skeleton two.
The first framework and the second framework are convenient to assemble and are fixed firmly.
Preferably, one end of the framework I, which is far away from the assembly part, is provided with a first bending part bent towards the framework in three directions, one end of the framework III, which is far away from the assembly part, is provided with a second bending part bent towards the framework in one direction, a channel is formed between the first bending part and the second bending part, and the channel is a part of a labyrinth sealing channel.
The length of the labyrinth seal channel is increased by the arrangement of the first bending part and the second bending part, and the performance of the combined seal structure is optimized.
Preferably, the end, far away from the assembly part, of the framework II is provided with a bent part for supporting the rib I, and the bent part and the framework II are of an integrated structure.
The stability of the first rib in the long-term use process is improved, and the service life of the combined sealing structure is prolonged.
Preferably, the sealing element is provided with a notch which is beneficial to the assembly of the sealing element and the framework III.
The sealing element and the framework are convenient to assemble.
Preferably, the convex ring and the convex part are of an integral structure with the sealing element.
The seal is easy to manufacture.
Compared with the prior art, the utility model have following advantage and effect:
1. the labyrinth seal channel is provided with external water or impurities which are not easy to enter the water storage space, so that the performance of the combined seal structure is optimized.
2. The water storage space can be used for storing water or impurities, and the water or the impurities are not easy to enter the hub bearing, so that the performance of the combined sealing structure is optimized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1. the sealing device comprises a first sealing part, a second sealing part, a first framework, a second framework, a magnetic rubber part, a first framework, a second framework, a sealing part, a third framework, a fourth framework.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.
In this document, the expression of the feature numbering is only used for distinguishing the related features and is not limited to the number of the features, for example, the skeletons one 3 and two 4 are used for expressing two skeletons, and is not limited to the number of the skeletons or the structure of the skeletons.
Example 1
A combined sealing structure of a hub bearing unit is used for the inner side of the hub bearing unit, wherein the inner side of the hub bearing unit refers to one side of a hub bearing close to a vehicle body.
As shown in fig. 1, the hub bearing unit combined seal structure includes a first seal portion 1 and a second seal portion 2 fitted to the first seal portion 1. The manner of assembly of the first sealing portion 1 and the second sealing portion 2 will not be described in detail, and the first sealing portion 1 and the second sealing portion 2 are assembled with reference to prior art assembly.
Referring to fig. 1, the first frame 3 and the second frame 4 may be made of stainless steel, and the third frame 6 may be made of metal.
The principle of the scheme is that a water storage space 8 is arranged between the first sealing part 1 and the second sealing part 2, and the water storage space 8 is communicated with the outside through a labyrinth sealing channel 9.
As shown in fig. 1, the labyrinth seal channel 9 makes the outside water or impurities not easy to enter the water storage space 8, when the hub bearing rotates, the labyrinth seal channel 9 makes the water or impurities in the water storage space 8 rapidly discharged from the labyrinth seal channel 9 under the action of centrifugal force, and prevents the water or impurities from entering the hub bearing.
The water storage space 8 is mainly used for storing water or impurities entering from the labyrinth seal channel 9, plays a certain role in buffering, and the water or the impurities are not easy to enter the hub bearing, so that the performance of the combined seal structure is optimized.
Example 2
The present embodiment describes the water storage space 8 with reference to embodiment 1.
As shown in fig. 1, the distance between the water storage space 8 and the axis of the hub bearing unit is not less than 2 cm.
The distance between the water storage space 8 and the axis of the hub bearing unit is not particularly limited, and can be reasonably selected by a person skilled in the art according to the diameter of the hub bearing.
The larger the distance between the water storage space 8 and the axis of the hub bearing unit is, the larger the centrifugal force borne by water or impurities in the water storage space 8 in the rotation process of the hub bearing is, the easier the water or impurities in the water storage space 8 are discharged, and the performance of the combined sealing structure is optimized.
Example 3
This embodiment describes the manner of forming the labyrinth seal passage 9 in conjunction with embodiment 1 or embodiment 2.
As shown in fig. 1, at least one first rib 10 protruding towards the third skeleton 6 is arranged on the magnetic rubber part 5, at least two second ribs 11 protruding towards the magnetic rubber part 5 are arranged on the sealing member 7, and the first rib 10 and the second ribs 11 are matched to form a labyrinth seal passage 9.
The first rib 10 and the magnetic rubber part 5 are of an integral structure, and the second rib 11 and the sealing part 7 are of an integral structure.
As shown in fig. 1, the first rib 10 and the second rib 11 form a lip structure, the first rib 10 on the magnetic rubber member 5 is engaged with the second rib 11 on the sealing member 7, and the first rib 10 is not in contact with the second rib 11 to form the labyrinth seal passage 9. The labyrinth seal passage 9 mainly functions to discharge water or foreign substances. By adopting the structure, the sealing performance of the combined sealing structure can be effectively optimized, and the friction torque of the combined sealing structure cannot be increased.
The number of the first ribs 10 and the second ribs 11 is not particularly limited, the larger the number of the first ribs 10 and the second ribs 11 is, the longer the labyrinth seal passage 9 is, and the longer the labyrinth seal passage 9 is, the better the sealing performance of the combined sealing structure is.
Example 4
The present embodiment is an optimized solution for the above embodiments in combination with any of the above embodiments.
As shown in fig. 1, a convex ring 12 protruding from the sealing member 7 in the hub bearing diameter direction is provided on the sealing member 7, and the convex ring 12 protrudes from the sealing member 7 in a direction away from the water storage space 8.
The number of the convex rings 12 can be one or more, and the sealing performance of the combined sealing structure is better when the number of the convex rings 12 is larger.
And a convex part 13 which protrudes out of the sealing element 7 along the axial direction of the hub bearing is arranged on the sealing element 7, and the convex part 13 protrudes out of the sealing element 7 towards the direction far away from the first framework 3.
The convex portion 13 is mainly used for isolation or support, that is, two adjacent structures are separated to facilitate assembly or disassembly of the related structures, so that the convex portion 13 may be cylindrical, or a groove portion may be provided on the convex portion 13 to reduce the manufacturing cost of the convex portion 13.
Example 5
This embodiment can be configured as any of the above embodiments, and describes the assembly manner of the first frame 3 and the second frame 4.
As shown in fig. 1, each of the first frame 3 and the second frame 4 includes an assembling portion 14 parallel to the axial direction of the hub bearing, and the assembling portion 14 on the first frame 3 is in interference fit with the assembling portion 14 on the second frame 4.
The assembly part 14 on the first framework 3 and the assembly part 14 on the second framework 4 can also be fixed together in an adhesion mode, or the assembly part 14 on the first framework 3 and the assembly part 14 on the second framework 4 can also be of an integrated structure.
The assembling mode of the first framework 3 and the second framework 4 is not particularly limited, and can be reasonably selected by a person skilled in the art according to needs.
Example 6
In this embodiment, the specific structures of the first frame 3 and the third frame 6 are described in conjunction with embodiment 5.
As shown in fig. 1, a first bending portion 15 bent toward a third frame 6 is provided at one end of the first frame 3 away from the assembly portion 14, a second bending portion 16 bent toward the first frame 3 is provided at one end of the third frame 6 away from the assembly portion 14, a channel is formed between the first bending portion 15 and the second bending portion 16, and the channel is a part of the labyrinth seal channel 9.
The arrangement of the first bending part 15 and the second bending part 16 lengthens the length of the labyrinth seal channel 9, and the performance of the combined seal structure is optimized.
Example 7
The present embodiment is combined with any one of the above embodiments, and mainly further defines the technical solution.
As shown in fig. 1, a bent portion for supporting the first rib 10 is disposed at an end of the second rib 4 away from the assembling portion 14, and the bent portion and the second rib 4 are of an integral structure.
The bent part plays a role of supporting the first rib 10, and the bent part can also be of a structure welded on the second framework 4.
A notch facilitating assembly of the sealing element 7 and the framework three 6 is arranged on the sealing element 7.
The convex ring 12 and the convex part 13 are of an integral structure with the sealing element 7.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a wheel hub bearing unit combination formula seal structure for wheel hub bearing unit is inboard, characterized by: including first seal portion (1) and with first seal portion (1) complex second seal portion (2), first seal portion (1) includes skeleton one (3) and skeleton two (4) skeleton one (3) with be provided with magnetic rubber spare (5) between skeleton two (4), second seal portion (2) include skeleton three (6) the parcel has sealing member (7) on skeleton three (6), first seal portion (1) with form water storage space (8) between second seal portion (2), water storage space (8) communicate with each other with the external world through labyrinth seal passageway (9).
2. The combined seal structure of a hub bearing unit according to claim 1, wherein: the distance between the water storage space (8) and the axis of the hub bearing unit is not less than 2 cm.
3. The combined seal structure of a hub bearing unit according to claim 1, wherein: be provided with on magnetic rubber spare (5) at least one to the bellied bead one (10) of three (6) directions of skeleton set up two at least convex beads two (11) to magnetic rubber spare (5) directions on sealing member (7), bead one (10) with bead two (11) cooperation forms labyrinth seal passageway (9).
4. The combined seal structure of a hub bearing unit according to claim 1, wherein: a convex ring (12) protruding out of the sealing element (7) along the diameter direction of the hub bearing is arranged on the sealing element (7), and the convex ring (12) protrudes out of the sealing element (7) in the direction far away from the water storage space (8).
5. The combined seal structure of a hub bearing unit according to claim 4, wherein: the sealing element (7) is provided with a convex part (13) which protrudes out of the sealing element (7) along the axial direction of the hub bearing, and the convex part (13) protrudes out of the sealing element (7) in the direction away from the first framework (3).
6. A combined seal structure for a hub bearing unit according to claim 3, wherein: skeleton one (3) and skeleton two (4) all include assembly portion (14) parallel with wheel hub bearing axis direction, are located assembly portion (14) on skeleton one (3) with be located assembly portion (14) interference fit on skeleton two (4).
7. The combined seal structure of a hub bearing unit according to claim 6, wherein: keep away from on skeleton (3) the one end of assembly portion (14) is provided with the portion of bending (15) of bending to three (6) directions of skeleton keep away from on skeleton three (6) the one end of assembly portion (14) is provided with the portion of bending two (16) of bending to skeleton one (3) direction, form the passageway between portion of bending (15) and the portion of bending two (16), the passageway is the partly of labyrinth seal passageway (9).
8. A combined seal structure of a hub bearing unit according to claim 6 or 7, wherein: one end, far away from the assembly part (14), of the second framework (4) is provided with a bent part for supporting the first rib (10), and the bent part and the second framework (4) are of an integrated structure.
9. The combined seal structure of a hub bearing unit according to claim 1, wherein: and a notch which is beneficial to the assembly of the sealing element (7) and the framework III (6) is arranged on the sealing element (7).
10. The combined seal structure of a hub bearing unit according to claim 5, wherein: the convex ring (12) and the convex part (13) are of an integrated structure with the sealing element (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177496.4U CN210859575U (en) | 2019-07-25 | 2019-07-25 | Combined sealing structure of hub bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177496.4U CN210859575U (en) | 2019-07-25 | 2019-07-25 | Combined sealing structure of hub bearing unit |
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| CN210859575U true CN210859575U (en) | 2020-06-26 |
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| CN201921177496.4U Active CN210859575U (en) | 2019-07-25 | 2019-07-25 | Combined sealing structure of hub bearing unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500361A (en) * | 2019-07-25 | 2019-11-26 | 浙江万向精工有限公司 | Hub-bearing unit combined seal structure |
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- 2019-07-25 CN CN201921177496.4U patent/CN210859575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500361A (en) * | 2019-07-25 | 2019-11-26 | 浙江万向精工有限公司 | Hub-bearing unit combined seal structure |
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