CN213511683U

CN213511683U - Raceway differentiation's wheel hub bearing unit

Info

Publication number: CN213511683U
Application number: CN202022289282.5U
Authority: CN
Inventors: 陈贵银; 陶佳乐; 李佳钰
Original assignee: NANJING GUANSHENG AUTOMOBILE PARTS CO Ltd
Current assignee: NANJING GUANSHENG AUTOMOBILE PARTS CO Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-06-22
Anticipated expiration: 2030-10-15

Abstract

A raceway-differentiated hub bearing unit. The problem of the inside uneven atress of present riveted wheel hub bearing unit has mainly been solved. The method is characterized in that: a first rolling way (21) is arranged on the outer wall of the journal, a second rolling way (31) is arranged on the inner ring, a retainer is arranged between the outer flange and the journal, a first rolling piece (41) and a second rolling piece (42) are arranged on the retainer, the first rolling piece is arranged between the inner wall of the outer flange and the first rolling way, and the second rolling piece is arranged between the inner wall of the outer flange and the second rolling way; the included angle a formed by the first rolling path and the horizontal plane is larger than the included angle b formed by the second rolling path and the horizontal plane. The utility model provides a wheel hub bearing unit of raceway differentiation makes first contained angle be greater than the second contained angle, reduces the great problem of inner circle deformation because of the riveting brings.

Description

Raceway differentiation's wheel hub bearing unit

Technical Field

The utility model relates to an automobile parts field, concretely relates to integrated circular cone raceway formula wheel hub bearing unit.

Background

The hub bearing is a part applied to an automobile axle for bearing and providing accurate guide for the rotation of a hub, bears axial load and radial load, and is an important component of automobile load and rotation.

Most of the tapered roller bearing units in the first, second and third generations in the market are designed to have equal raceway sizes, when riveting processing is adopted, because the deformation of an inner ring raceway caused by riveting is large, if the tapered roller bearing units are designed according to the equal raceway sizes, the stress in the bearing is seriously uneven, and finally the service life of the bearing is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a raceway differentiation's wheel hub bearing unit has mainly solved the uneven problem of the inside atress of present riveted wheel hub bearing unit.

The utility model discloses a concrete implementation scheme does: a hub bearing unit with different roller paths comprises an outer flange, an inner flange and an inner ring, wherein the inner flange comprises a flange plate and a shaft neck, the inner ring is arranged between the shaft neck and the outer flange, a first roller path is arranged on the outer wall of the shaft neck, a second roller path is arranged on the inner ring, a retainer is arranged between the outer flange and the shaft neck, a first rolling piece and a second rolling piece are arranged on the retainer, the first rolling piece is arranged between the inner wall of the outer flange and the first roller path, and the second rolling piece is arranged between the inner wall of the outer flange and the second roller path;

the included angle a formed by the first rolling path and the horizontal plane is larger than the included angle b formed by the second rolling path and the horizontal plane.

The angle difference between the included angle a and the included angle b is larger than 0 and smaller than 0.5 degrees.

The included angle a is 14 degrees and 30 degrees, and the included angle b is 14 degrees and 20 degrees.

The first rolling member is a tapered roller.

The second rolling member is a tapered roller.

The shaft neck is provided with a gear ring outside, and the shaft neck further comprises a sensing head detachably connected with the outer flange, and the top of the sensing head extends into the outer flange and is arranged opposite to the gear ring.

The gear ring is integrally arranged on the outer wall of the shaft neck.

The utility model has the advantages that: the utility model provides a wheel hub bearing unit of raceway differentiation makes first contained angle be greater than the second contained angle, reduces the great problem of inner circle deformation because of the riveting brings.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic partial structure diagram of an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings: as shown in the figure, a raceway-differentiated hub bearing unit comprises an outer flange 1, an inner flange 2 and an inner ring, wherein the inner flange comprises a flange plate 20 and a journal 22, the inner ring is arranged between the journal and the outer flange, the outer wall of the journal is provided with a first raceway 21, the inner ring is provided with a second raceway 31, a retainer 4 is arranged between the outer flange and the journal, the retainer is provided with a first rolling element 41 and a second rolling element 42, the first rolling element is arranged between the inner wall of the outer flange and the first raceway, and the second rolling element is arranged between the inner wall of the outer flange and the second raceway; the included angle a formed by the first rolling path and the horizontal plane is larger than the included angle b formed by the second rolling path and the horizontal plane. On one hand, an inner ring is reduced, the cost is reduced, the wall thickness can be increased, the rigidity is increased, on the other hand, the included angle of the first raceway is larger, the deformation amount during riveting can be compensated, and further, the bottoms of the first raceway and the second raceway are on the same horizontal plane.

In the present embodiment, as shown in the figure, the angle difference between the included angle a and the included angle b is greater than 0 and less than 0.5 °. An angular difference within this range is preferred.

In the present embodiment, as shown, the included angle a is 14 ° 30 'and the included angle b is 14 ° 20'. This dimension is preferred.

In this embodiment, as shown, the first rolling elements are tapered rollers.

In this embodiment, as shown, the second rolling elements are tapered rollers.

In this embodiment, as shown in the figure, the shaft journal is externally provided with a gear ring 221, and further comprises a sensing head 5 detachably connected with the outer flange, and the top of the sensing head extends into the outer flange and is arranged opposite to the gear ring.

In this embodiment, the ring gear is integrally disposed on the journal outer wall, as shown.

In this embodiment, as shown in the figure, the outer flange is provided with a connection hole 25, and the sensing head is in snap fit with the connection hole.

In this embodiment, as shown, a sealing ring 252 is disposed between the sensor head and the connecting hole. Preventing leakage.

In the description of the present invention, it is to be understood that the terms "length", "width", "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 merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The embodiments described with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. The utility model provides a wheel hub bearing unit of raceway differentiation, includes outer flange (1), interior flange (2) and inner circle, interior flange includes ring flange (20) and axle journal (22), the inner circle is located the axle journal with between the outer flange, its characterized in that: a first rolling way (21) is arranged on the outer wall of the journal, a second rolling way (31) is arranged on the inner ring, a retainer is arranged between the outer flange and the journal, a first rolling piece (41) and a second rolling piece (42) are arranged on the retainer, the first rolling piece is arranged between the inner wall of the outer flange and the first rolling way, and the second rolling piece is arranged between the inner wall of the outer flange and the second rolling way;

2. A raceway-differentiated hub bearing unit according to claim 1, characterized in that: the angle difference between the included angle a and the included angle b is larger than 0 and smaller than 0.5 degrees.

3. A raceway-differentiated hub bearing unit according to claim 2, characterized in that: the included angle a is 14 degrees and 30 degrees, and the included angle b is 14 degrees and 20 degrees.

4. A raceway-differentiated hub bearing unit according to claim 3, characterized in that: the first rolling member is a tapered roller.

5. A raceway-differentiated hub bearing unit according to claim 4, characterized in that: the second rolling member is a tapered roller.

6. A raceway-differentiated hub bearing unit according to claim 5, characterized in that: the shaft neck is externally provided with a gear ring (221), and the shaft neck further comprises a sensing head (5) detachably connected with the outer flange, wherein the top of the sensing head extends into the outer flange and is arranged opposite to the gear ring.

7. A raceway-differentiated hub bearing unit according to claim 6, characterized in that: the gear ring is integrally arranged on the outer wall of the shaft neck.

8. A raceway-differentiated hub bearing unit according to claim 6, characterized in that: the outer flange is provided with a connecting hole (25), and the sensing head is matched with the connecting hole in a clamping manner.

9. A raceway-differentiated hub bearing unit according to claim 8, characterized in that: and a sealing ring (252) is arranged between the sensing head and the connecting hole.