CN219505780U

CN219505780U - Automobile hub unit with dust cover

Info

Publication number: CN219505780U
Application number: CN202320505393.6U
Authority: CN
Inventors: 赵利明; 王奇刚
Original assignee: Hangzhou Li Yi Bearing Co ltd
Current assignee: Hangzhou Li Yi Bearing Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-11
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses an automobile hub unit with a dust cover, which comprises a flange, wherein an outer ring is sleeved on the outer diameter surface of the flange, an inner ring is arranged between the flange and the outer ring, a first sealing ring is arranged between the flange and the edge of the outer ring, a sealing groove is arranged at the inner end of the outer ring, an end cover is transversely arranged at the middle part of the flange, the inner side of the end cover is provided with the dust cover, one side of the first sealing ring is fixed on the flange, a second sealing ring and a third sealing ring are respectively arranged between the flange and the outer ring, one side of the dust cover is provided with an inflatable sealing ring, the diameter of the inflatable sealing ring is enlarged by inflating the inflatable sealing ring, and the inflatable sealing ring is tightly attached to the sealing groove so as to ensure the close attachment of the end cover and the hub of the device, thereby ensuring the tightness between the end cover and the hub, and preventing pollutants such as dust and dust from entering into the bearing from gaps, so that the pollutants seriously affect the service life of all parts in the bearing.

Description

Automobile hub unit with dust cover

Technical Field

The utility model relates to the technical field of automobile hubs, in particular to an automobile hub unit with a dust cover.

Background

The hub is a cylindrical metal part, the center of which is mounted on a shaft, the inner profile of which supports the tire, known as the "rim" or "rim". The hub bearings of passenger cars have in the past most used single row tapered rollers or ball bearings in pairs. With the development of technology, passenger cars have widely used a passenger car hub unit. The range and the amount of use of hub-bearing units are increasing, and have evolved to the third generation: so that the maintenance of the automobile becomes easy. The third-generation hub bearing unit is matched with the anti-blocking brake system by adopting the bearing unit. The hub unit is designed with an inner flange which is bolted to the drive shaft and an outer flange which mounts the entire bearing together.

The application number is as follows: CN202122182439.9 provides a hub bearing unit with a dust cover, which comprises a flange plate, an outer ring, an inner ring, rollers and a roller path, wherein the outer ring is sleeved on the flange plate, the inner ring is sleeved between the outer ring and the flange plate, the roller path is arranged between the flange plate and the outer ring and between the outer ring and the outer end of the inner ring, two rollers which are symmetrical to each other are arranged in the roller path, a first sealing ring is arranged between the end parts of the flange plate and the outer ring, one end of the first sealing ring is fixed on the flange plate, the other end of the first sealing ring is fixed in a sealing groove of the outer ring, the hub bearing unit further comprises an end cover, two dust covers which are symmetrical to each other are arranged on the inner side of the end cover, and the dust cover is positioned between the outer ring and the inner ring. The hub bearing unit with the dust cover has the advantages of good dust tightness and safe and stable operation.

Similar to the hub bearing unit with dust cover described above, the following disadvantages still exist: the hub bearing unit comprises an end cover, wherein two mutually symmetrical dust covers are arranged on the inner side of the end cover, are rectangular and are positioned between the outer ring and the inner ring; the inner side of the dust cover is provided with two L-shaped elastic sealing rings which are obliquely symmetrical, a labyrinth sealing channel is formed between the two elastic sealing rings, and the labyrinth sealing channel is matched with the end cover and the dust cover to realize the sealing and dust-proof effects; the spring that elastic seal circle afterbody set up forms pressure seal when the operation, but the spring that elastic seal circle afterbody set up can lead to the spring when the car stops through long-time use, plays the effect of supporting to the sealing washer to produce the gap, make inside bearing expose outside, thereby make between wheel hub outer lane and the ring flange, the leakproofness between outer lane and the inner circle be insufficient, pollutant such as dust can enter into the bearing from the gap, seriously influence the life of each inside part of bearing.

Accordingly, in view of the above, an automobile hub unit with a dust cover is proposed to achieve a practical value by improving the conventional structure and the conventional disadvantages.

Disclosure of Invention

The utility model aims to provide an automobile hub unit with a dust cover, which solves the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a take auto wheel hub unit of shield, includes ring flange, outer lane and inner circle, its characterized in that, the external diameter surface cover of ring flange is provided with the outer lane, be provided with the inner circle between ring flange and the outer lane, be provided with the raceway between ring flange and the outer lane, between the contact surface of outer lane and inner lane, and the inboard of raceway is provided with two sets of mutual symmetrical rollers, be provided with first sealing washer between the edge of ring flange and outer lane, the inner of outer lane is provided with the seal groove, the middle part of ring flange transversely is provided with the end cover, the end cover inboard is provided with two sets of mutual symmetrical shield.

Preferably, the method further comprises:

one side of the first sealing ring is fixed on the flange plate, a second sealing ring and a third sealing ring are further arranged between the flange plate and the outer ring respectively, the second sealing ring is fixed on the inner side of the outer ring, one end of the third sealing ring is connected with the outer ring, and the other end of the third sealing ring is fixedly connected with the flange plate.

Preferably, the method further comprises the following steps:

the dustproof cover is located between the outer ring and the inner ring, one side of the dustproof cover is provided with an inflatable sealing ring, and the inflatable sealing ring is identical to the sealing groove in shape.

Preferably, the method further comprises the following steps:

the second sealing ring is a hook type, and a labyrinth sealing channel is formed between the second sealing ring and the third sealing ring.

Preferably, the method further comprises the following steps:

the dustproof cover and the end cover are integrally arranged, and two groups of mutually symmetrical inflatable sealing rings are arranged between the outer ring and the inner ring.

Preferably, the method further comprises the following steps:

the inside of shield is provided with the gas pocket, and the gas pocket passes through the trachea passageway and constitutes communication structure with inflatable sealing ring.

Compared with the prior art, the utility model has the beneficial effects that: the device has the advantages that the inflatable sealing ring in the automobile hub unit is combined with the sealing groove, so that the function of fixing the dust cover is achieved, the tightness between the hub outer ring and the flange plate and between the outer ring and the inner ring is improved, pollutants such as dust and dust can not enter the bearing from gaps, and the service life of all parts in the bearing is prevented from being seriously influenced by the pollutants; and the first sealing ring, the second sealing ring and the third sealing ring are arranged at two ends of the rollaway nest formed between the flange plate and the outer ring, so that the pollution of pollutants to the roller or the inside of the hub is prevented, and the service life of the bearing is influenced.

Drawings

FIG. 1 is a schematic side sectional view of an automobile hub unit with a dust cover according to the present utility model;

FIG. 2 is a schematic front view of an automobile hub unit with a dust cover according to the present utility model;

FIG. 3 is a schematic front view of an end cover of an automobile hub unit with a dust cover according to the present utility model;

fig. 4 is a schematic side sectional view of an end cap of an automobile hub unit with a dust cap according to the present utility model.

In the figure: 1. a flange plate; 2. an outer ring; 3. an inner ring; 4. a raceway; 5. a roller; 6. a first seal ring; 7. sealing grooves; 8. an end cap; 9. a dust cover; 901. air holes; 10. a second seal ring; 11. a third seal ring; 12. an inflatable sealing ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the automobile hub unit with the dust cover comprises a flange plate 1, an outer ring 2 and an inner ring 3, wherein the outer diameter surface of the flange plate 1 is sleeved with the outer ring 2, the inner ring 3 is arranged between the flange plate 1 and the outer ring 2, a roller path 4 is arranged between contact surfaces of the flange plate 1 and the outer ring 2 and between the outer ring 2 and the inner ring 3, so that the hub can finish rotation work, two groups of rollers 5 which are symmetrical with each other are arranged on the inner side of the roller path 4, a first sealing ring 6 is arranged between the edges of the flange plate 1 and the outer ring 2, a sealing groove 7 is arranged at the inner end of the outer ring 2, an end cover 8 is transversely arranged in the middle of the flange plate 1, a groove is dug at one side of the end cover 8, the opening of the groove can be closed, and two groups of dust covers 9 which are symmetrical with each other are arranged on the inner side of the end cover 8; one side of the first sealing ring 6 is fixed on the flange plate 1, a second sealing ring 10 and a third sealing ring 11 are respectively arranged between the flange plate 1 and the outer ring 2, the second sealing ring 10 is fixed on the inner side of the outer ring 2, one end of the third sealing ring 11 is connected with the outer ring 2, the other end of the third sealing ring 11 is fixedly connected with the flange plate 1, two ends of a rollaway nest 4 formed between the flange plate 1 and the outer ring 2 are sealed through the first sealing ring 6, the second sealing ring 10 and the third sealing ring 11, the second sealing ring 10 is a hook type, and a labyrinth sealing channel is formed between the second sealing ring 10 and the third sealing ring 11, so that dust is prevented from entering an inner cavity containing the roller 5;

the dustproof cover 9 is positioned between the outer ring 2 and the inner ring 3, one side of the dustproof cover 9 is provided with an inflatable sealing ring 12, the inflatable sealing ring 12 has the same shape as the sealing groove 7, an air hole 901 is formed in the dustproof cover 9, and the air hole 901 and the inflatable sealing ring 12 form a communication structure through an air pipe channel; the dust cover 9 is integrally arranged with the end cover 8, two groups of mutually symmetrical inflatable sealing rings 12 are further arranged between the outer ring 2 and the inner ring 3, and the air holes 901 are inflated, so that the diameter of the inflatable sealing rings 12 is enlarged, the inflatable sealing rings 12 are tightly attached to the sealing groove 7, the end cover 8 of the device is tightly attached to the hub, the tightness between the end cover 8 and the hub is guaranteed, pollutants such as dust and dust are prevented from entering the bearing from gaps, and the service life of each part inside the bearing is seriously affected by the pollutants.

Working principle: when the automobile hub unit with the dust cover is used, firstly, the flange plate 1 on the hub is installed on an automobile in a bolt connection mode, meanwhile, the tire of the hub is installed and inflated, after the installation is completed, the end cover 8 is buckled with the outer side of the flange plate 1, and meanwhile, the air hole 901 in the dust cover 9 is inflated, so that the diameter of the inflatable sealing ring 12 on one side of the dust cover 9 is enlarged, the inflatable sealing ring 12 is tightly attached to the sealing groove 7, the end cover 8 and the hub of the automobile hub are tightly attached to each other, the tightness between the end cover 8 and the hub is guaranteed, and pollutants such as dust and dust are prevented from entering the bearing from gaps, so that the pollutants seriously affect the service life of all parts inside the bearing.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take car hub unit of shield, includes ring flange (1), outer lane (2) and inner circle (3), its characterized in that, the external diameter surface cover of ring flange (1) is provided with outer lane (2), be provided with inner circle (3) between ring flange (1) and outer lane (2), be provided with raceway (4) between the contact surface of outer lane (2) and inner circle (3), and the inboard of raceway (4) is provided with two sets of roller (5) of mutual symmetry, be provided with first sealing washer (6) between the edge of ring flange (1) and outer lane (2), the inner of outer lane (2) is provided with seal groove (7), the middle part of ring flange (1) transversely is provided with end cover (8), the end cover (8) inboard is provided with two sets of dust cover (9) of mutual symmetry.

2. The automobile hub unit with the dust cover according to claim 1, wherein one side of the first sealing ring (6) is fixed on the flange plate (1), a second sealing ring (10) and a third sealing ring (11) are further arranged between the flange plate (1) and the outer ring (2) respectively, the second sealing ring (10) is fixed on the inner side of the outer ring (2), one end of the third sealing ring (11) is connected with the outer ring (2), and the other end of the third sealing ring (11) is fixedly connected with the flange plate (1).

3. An automobile hub unit with a dust cover according to claim 2, characterized in that the dust cover (9) is located between the outer ring (2) and the inner ring (3), one side of the dust cover (9) is provided with an inflatable sealing ring (12), and the inflatable sealing ring (12) has the same shape as the sealing groove (7).

4. A car hub unit with a dust cover according to claim 3, characterized in that the second sealing ring (10) is a hook-type, and a labyrinth sealing channel is formed between the second sealing ring (10) and the third sealing ring (11).

5. The automobile hub unit with the dust cover according to claim 4, wherein the dust cover (9) is integrally arranged with the end cover (8), and two groups of mutually symmetrical inflatable sealing rings (12) are further arranged between the outer ring (2) and the inner ring (3).

6. The automobile hub unit with the dust cover according to claim 5, wherein an air hole (901) is formed in the dust cover (9), and the air hole (901) and the inflatable sealing ring (12) form a communication structure through an air pipe channel.