CN217081112U

CN217081112U - Automobile hub unit

Info

Publication number: CN217081112U
Application number: CN202221154695.5U
Authority: CN
Inventors: 周均
Original assignee: Taizhou Chuanghao Wheel Hub And Bearing Co ltd
Current assignee: Taizhou Chuanghao Wheel Hub And Bearing Co ltd
Priority date: 2022-05-15
Filing date: 2022-05-15
Publication date: 2022-07-29
Anticipated expiration: 2032-05-15

Abstract

The utility model provides an automobile wheel hub unit belongs to auto-parts technical field. It has solved current automobile wheel hub unit weight is heavy, short-lived scheduling problem. The automobile hub unit comprises an outer ring, an inner ring and a flange, the inner ring is sleeved on the outer wall of the flange in an interference fit manner, the flange is provided with a retaining shoulder for abutting against the inner end of the inner ring, the outer ring is sleeved on the outer side of the inner ring, a circle of steel balls located in a retainer is arranged between the outer ring and the flange, another circle of steel balls located in the retainer is arranged between the outer ring and the flange, the outer ring is connected with an installation cover in an interference fit manner, the flange is provided with a riveting part which is outwards turned over and riveted on the outer end of the inner ring, the flange is provided with a through hole which is coaxially arranged with the flange and axially communicated with the flange, a dustproof cover for plugging the through hole is fixedly connected in the through hole, and the installation cover is provided with a blind hole for installing a sensor. The utility model has the advantages of light weight, long service life and the like.

Description

Automobile hub unit

Technical Field

The utility model belongs to the technical field of auto-parts, in particular to automobile wheel hub unit.

Background

The automobile hub unit mainly has the functions of bearing and providing accurate guide for the transmission of the hub, bears axial load and radial load, and is an important part in automobile accessories.

For example, chinese patent literature discloses a corrosion-resistant hub bearing unit [ application No.: 201720069601.7, respectively; authorization notice number: CN206571824U ], which comprises a bearing inner ring, a bearing outer ring and a plurality of steel balls, wherein the bearing outer ring is sleeved on the bearing inner ring, the steel balls are positioned between the bearing outer ring and the bearing inner ring, two retainers are arranged between the bearing outer ring and the bearing inner ring, the retainers are respectively provided with a limiting cambered surface, the plurality of steel balls are divided into two groups, one end of the bearing inner ring is provided with a first annular inner limiting cambered surface, the inner side of the bearing outer ring is provided with a first outer limiting cambered surface which is arranged opposite to the first inner limiting cambered surface, wherein the limit cambered surface of one retainer, the inner limit cambered surface I and the outer limit cambered surface I are positioned on the same circumference, the circumferential surface of one group of steel balls is in rolling contact with the inner limiting cambered surface I, the outer limiting cambered surface I and the limiting cambered surfaces of the corresponding retainers, a limiting ring is fixed at the other end of the bearing inner ring, the bearing inner ring and the bearing outer ring are sealed, and a sealing assembly I is arranged between the limiting ring and the bearing outer ring.

The corrosion-resistant hub bearing unit can improve the corrosion-resistant effect through the arrangement of the limiting ring and the sealing assembly I, the bearing inner ring on the corrosion-resistant hub bearing unit is called as a flange in the industry, the bearing inner ring (flange) is of a solid structure, so that the weight is heavier, the lightweight design requirement is not met, and the weight is increased due to the arrangement of the fixing ring; in addition, in order to collect ABS signals, a magnetic encoder is generally installed on a hub unit at present, the head of an installation cover in the existing magnetic encoder is of a through hole type, so that slurry or dust can enter the head of the installation cover after a long time, large-particle metal powder can be adsorbed on a magnetic ring of the magnetic encoder to cause ABS signal alarming, and the service life of a product is shortened due to the entering of the slurry and the powder.

Disclosure of Invention

The utility model aims at providing a light in weight, long service life's automobile wheel hub unit to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an automobile wheel hub unit, includes outer lane, inner circle and flange, inner circle interference fit ground cover in the flange outer wall, the flange has the fender shoulder that supplies inner end of inner circle to lean on, the outer lane overlap in the inner circle outside and be equipped with the steel ball that the round is located the holder between the two, be equipped with another circle steel ball that is located the holder between outer lane and the flange, outer lane interference fit ground be connected with the installation cover, a serial communication port, the flange have and outwards turn over the book and the riveting in the riveting portion of inner circle outer end, the flange have rather than coaxial setting and the axial through-hole that link up, the through-hole in link firmly the shield with its shutoff, the installation cover blind hole that supplies the sensor installation.

In the automobile hub unit, the thickness of the bottom wall of the blind hole is 0.4 mm.

In the automobile hub unit, the middle part of the dustproof cover is provided with a convex bulge part on the side of the mounting cover, and the edge of the dustproof cover is provided with a turned edge which is turned over towards the side of the mounting cover and is in interference fit with the inner wall of the through hole.

In the automobile hub unit, the inner wall of the through hole is embedded with a sealing ring sealed on the flanging.

In the automobile hub unit, the clamp spring is embedded in the inner wall of the through hole, and the end part of the flanging, facing the mounting cover side, abuts against the clamp spring.

As another aspect, in the above automobile hub unit, the inner wall of the through hole has a step against which the dust cover abuts, and the periphery of the dust cover is welded to the inner wall of the through hole. The dust cover is connected with the through hole firmly, and the plugging effect of the dust cover is good.

In the automobile hub unit, the inner wall of the outer ring is connected with a circle of fixing frame in an interference fit manner, the inner end of the fixing frame is provided with a radially inward convex connecting part, the connecting part is vulcanized and fixedly connected with a sealing element, and the sealing element is provided with at least two circles of sealing lips sealed on the outer wall of the flange.

In the automobile hub unit, a plurality of bolts penetrate through the flange, and a circle of axially extending anti-skidding teeth are arranged at the contact part of the bolts and the flange.

Compared with the prior art, the automobile hub unit is light in weight, meets the design requirement of light weight, is good in sealing performance, can stop the possibility that impurities such as slurry enter the interior, and is good in working stability and long in service life.

Drawings

Fig. 1 is a structural sectional view of the automobile hub unit of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

In the figure, 1, outer ring; 2. an inner ring; 3. a flange; 4. a shoulder block; 5. steel balls; 6. mounting a cover; 7. riveting and pressing part; 8. a through hole; 9. a dust cover; 10. blind holes; 11. a boss portion; 12. flanging; 13. a seal ring; 14. a clamp spring; 15. a fixed mount; 16. a connecting portion; 17. a seal member; 18. a sealing lip; 19. a bolt; 20. anti-slip teeth; 21. a framework; 22. a bending part.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the automobile hub unit of the present invention includes an outer ring 1, an inner ring 2 and a flange 3, the inner ring 2 is sleeved on an outer wall of the flange 3 in an interference fit manner, the flange 3 has a shoulder 4 for abutting against an inner end of the inner ring 2, the outer ring 1 is sleeved on an outer side of the inner ring 2 and a circle of steel balls 5 located in a holder is arranged between the inner ring and the flange, another circle of steel balls 5 located in the holder is arranged between the outer ring 1 and the flange 3, the outer ring 1 is connected with an installation cover 6 in an interference fit manner, an outer wall of an end portion of the installation cover 6 is wrapped with a framework 21 in this embodiment, the framework 21 has a bending portion 22 which is outwardly folded and embedded in an end portion of the installation cover 6, the bending portion 22 is wrapped in the installation cover 6 during injection molding, the framework 21 is inserted into an inner wall of the outer ring 1 in an interference fit manner, an end portion of the installation cover 6 abuts against an outer end surface of the outer ring 1, and thus the installation cover 6 is connected with the outer ring 1 in a good firmness. The flange 3 is provided with a riveting part 7 which is turned outwards and is riveted at the outer end of the inner ring 2, the flange 3 is provided with a through hole 8 which is coaxially arranged with the flange and is axially communicated with the flange, a dustproof cover 9 for plugging the through hole 8 is fixedly connected in the through hole 8, and the mounting cover 6 is provided with a blind hole 10 for mounting the sensor.

According to the automobile hub unit, the riveting part 7 is used for replacing the conventional fixing ring, the axial arrangement size is reduced, the weight is also reduced, and the riveting part 7 enables the inner ring 2 to be stably positioned; the through hole 8 reduces the weight of the flange 3, the dust cover seals the through hole 8, slurry and dust are prevented from entering the side of the mounting cover 6 to cause damage, and the service life is ensured; the installation cover 6 is used for installing the sensor through the blind hole 10, the blind hole 10 prevents impurities such as slurry from entering the magnetic ring and the inner ring 2, the working stability of the magnetic encoder is good, and the service life of the magnetic encoder is long.

In further detail, the thickness of the bottom wall of the blind hole 10 is 0.4mm, so that ABS signal acquisition can be guaranteed not to be influenced, the structural strength of the bottom wall of the blind hole 10 is guaranteed, the sealing effect is good, and the service life is long; the middle part of the dustproof cover 9 is provided with a convex bulge part 11 at the side of the installation cover 6, the edge of the dustproof cover 9 is provided with a flange 12 which is turned over towards the side of the installation cover 6 and is in interference fit with the inner wall of the through hole 8, the dustproof cover 9 is formed by stamping, the lower die is provided with a groove matched with the bulge part 11, the bulge part 11 formed by the dustproof cover 9 during stamping enables the dustproof cover 9 to be limited, the flange 12 is stamped smoothly, the stamping precision of the dustproof cover 9 is high, the effective contact area of the flange 12 and the through hole 8 is large, and the plugging effect is good; a sealing ring 13 sealed on the flanging 12 is embedded in the inner wall of the through hole 8, the sealing ring 13 further increases the sealing property between the inner wall of the through hole 8 and the flanging 12, so that the water leakage is avoided, and the service life is prolonged; through-hole 8's inner wall inlays and is equipped with jump ring 14, and turn-ups 12 contradicts in jump ring 14 towards the tip of installation cover 6 sides, and jump ring 14 supplies turn-ups 12 to support and lean on, plays and stops the effect, even the dust cover receives impurity such as outside mud to strike for a long time, and the dust cover also can not be to installation cover 6 side displacements, does not have the possibility that drops, and job stabilization nature is good, long service life.

The inner wall of the inner end of the outer ring 1 is connected with a circle of fixed frame 15 in an interference fit manner, the inner end of the fixed frame 15 is provided with a connecting part 16 which is protruded inwards in the radial direction, the connecting part 16 is fixedly connected with a sealing part 17 in a vulcanization manner, the sealing part 17 is provided with at least two circles of sealing lips 18 which are sealed on the outer wall of the flange 3, so that the sealing performance between the inner end of the outer ring 1 and the flange 3 is good, and the number of the sealing lips 18 in the embodiment is three, so that a multiple sealing effect is achieved; a plurality of bolts 19 penetrate through the flange 3, a circle of axially extending anti-skidding teeth 20 are arranged at the contact part of the bolts 19 and the flange 3, the bolts 19 are prevented from being turned over by the anti-skidding teeth 20, the bolts 19 are stably connected with the flange 3, and the working stability is good.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An automobile hub unit comprises an outer ring (1), an inner ring (2) and a flange (3), wherein the inner ring (2) is sleeved on the outer wall of the flange (3) in an interference fit manner, the flange (3) is provided with a retaining shoulder (4) for abutting against the inner end of the inner ring (2), the outer ring (1) is sleeved on the outer side of the inner ring (2) and a circle of steel balls (5) in a retainer is arranged between the outer ring (2) and the flange (3), another circle of steel balls (5) in the retainer is arranged between the outer ring (1) and the flange (3), the outer ring (1) is connected with an installation cover (6) in an interference fit manner, the automobile hub unit is characterized in that the flange (3) is provided with a riveting part (7) which is turned outwards and riveted on the outer end of the inner ring (2), the flange (3) is provided with a through hole (8) which is coaxially arranged with the flange and axially communicated with the flange, and a dustproof cover (9) for plugging the through hole (8) is fixedly connected in the through hole (8), the mounting cover (6) is provided with a blind hole (10) for mounting the sensor.

2. A vehicle hub unit according to claim 1, wherein the thickness of the bottom wall of the blind hole (10) is 0.4 mm.

3. The automobile hub unit according to claim 2, wherein the middle of the dust cap (9) is provided with a convex part (11) protruding from the side of the mounting cover (6), and the edge of the dust cap (9) is provided with a flange which is folded towards the side of the mounting cover (6) and is in interference fit with the inner wall of the through hole (8).

4. The automobile hub unit according to claim 3, wherein a sealing ring (13) sealed with a flange is embedded in the inner wall of the through hole (8).

5. The automobile hub unit according to claim 4, wherein a snap spring (14) is embedded in the inner wall of the through hole (8), and the end of the flange facing the mounting cover (6) abuts against the snap spring (14).

6. A vehicle hub unit according to claim 1, wherein the inner wall of the through hole (8) has a step for abutting a dust cover, and the periphery of the dust cover (9) is welded to the inner wall of the through hole (8).

7. A vehicle hub unit according to any one of claims 1 to 6, wherein a ring of fixing frame (15) is connected to the inner end of the outer ring (1) in an interference fit manner, the inner end of the fixing frame (15) is provided with a radially inward protruding connecting portion (16), the connecting portion (16) is vulcanized and fixedly connected with a sealing member (17), and the sealing member (17) is provided with at least two rings of sealing lips (18) sealed on the outer wall of the flange (3).

8. A vehicle hub unit according to claim 7, wherein a plurality of bolts (19) are arranged in the flange (3) in a penetrating manner, and a circle of axially extending anti-slip teeth (20) are arranged at the contact part of the bolts (19) and the flange (3).