Inner flange structure of hub bearing

Abstract

The utility model discloses a hub bearing inner flange structure which comprises a flange plate, a first side face and a second side face, the first side face is provided with a small inner ring in a protruding mode, the second side face is provided with a plurality of bolt seats, and the bolt seats are evenly distributed in the circumferential direction of the axis of an inner flange. A first annular groove is annularly formed in the second side face in the direction towards the small inner ring along the axis position of the second side face, a second annular groove is formed between the end face of the first annular groove and the bolt base, the second annular groove and the first annular groove are arranged in a stepped mode from top to bottom, and a notch is annularly formed in the end, close to the first side face, of the small inner ring in the axis direction. According to the inner flange structure, the weight of the inner flange can be reduced, the manufacturing cost is reduced, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of inner flanges, in particular to a structure of an inner flange of a hub bearing. Background Art

[0002] The third generation wheel hub bearing is the latest generation of products developed in automobile wheel hub bearings. The third generation wheel hub bearing is usually assembled from an inner ring and an outer ring with a special-shaped outer disc. Both the inner and outer rings have flanges. One side of the inner ring is provided with a flange for easy connection with the drive shaft, and the other side is provided with a small inner ring. The inner ring is fixed to the drive shaft with bolts through the inner flange, and the outer flange and the small inner ring cooperate to install the entire bearing together. This design improves the convenience and precision of assembly. The third generation wheel hub bearing has become the mainstream choice in the modern automobile manufacturing industry with its high integration, precise preload control, easy installation and maintenance, and compatibility with ABS systems.

[0003] The inner flange of the existing third-generation wheel hub bearing generally has a flange at one end where the flange is connected to the drive shaft, and a raceway for adapting to the rolling of rollers and some bosses for supporting the internal components of the bearing are set on the outer peripheral wall of the small inner ring on the other side. The inner flange of the third-generation wheel hub bearing has a large number of bosses / flanges, which increases its weight and manufacturing cost, and the heavy third-generation wheel hub bearing is not easy to assemble manually. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a structure of an inner flange of a hub bearing. The inner flange structure can reduce the weight of the inner flange, lower the manufacturing cost, and has a simple structure.

[0005] To achieve the above-mentioned purpose, the utility model provides a structure of an inner flange of a wheel hub bearing, comprising a flange plate, a first side surface and a second side surface, wherein a small inner ring is protruded from the first side surface, a plurality of bolt seats are provided on the second side surface, and the plurality of bolt seats are evenly distributed circumferentially along the axis of the inner flange, a first annular groove is provided on the second side surface circumferentially toward the small inner ring along its axial position, a second annular groove is formed between the end face of the first annular groove and the bolt seat, the second annular groove and the first annular groove are arranged in a stepped manner from top to bottom, and a notch is provided on the small inner ring near one end of the first side surface circumferentially toward the axial direction, and a support member is provided in the notch.

[0006] The effect that can be produced by adopting the above technical scheme is: the existing flange generally adopts a flange arranged at the connection position between the second side and the drive shaft to improve the connection strength between the flange plate of the inner flange and the drive shaft, and the flange can be connected with the drive shaft. In this scheme, a first annular groove and a second annular groove are arranged on the second side. The first annular groove and the second annular groove are arranged in a stepped shape. When the inner flange is connected to the drive shaft, the drive shaft is placed corresponding to the position of the first annular groove and the drive shaft can be partially embedded in the first annular groove and contact the inner wall of the first annular groove. At this time, the corresponding position of the drive shaft and the second annular groove can also be accommodated in the second annular groove and abut against the end face of the first annular groove, so as to avoid excessive connection between the drive and the inner flange and damage to the first annular groove of the inner flange. At this time, the technicians in this field place the drive shaft and The inner flange can be fixed to complete the installation of the inner flange and the drive shaft. In this solution, the first annular groove and the second annular groove are set to reduce the weight of the inner flange and to a certain extent reduce the manufacturing cost of the inner flange. A notch is set on the first side surface, and the notch is set near one end of the first side surface and opened toward the axial direction of the small inner ring. Technical personnel in this field can open the notch by demolding to reduce the weight of the inner flange. A support member is set in the notch so that when the bearing is installed, the sealing ring of the bearing can be placed on the support member of the notch to prevent the sealing ring from falling out of the bearing. In this solution, the notch, the first annular groove and the second annular groove are set at different positions of the inner flange to reduce the manufacturing cost of the inner flange, reduce the weight of the inner flange, and make installation more convenient.

[0007] The utility model is further configured that: the inner wall of the first annular groove is configured in an arc surface, and the first annular groove is an arc surface annular groove.

[0008] The effect that can be produced by adopting the above technical scheme is: this scheme adopts setting the inner wall of the first annular groove as an arc surface. When the inner flange is connected to the drive shaft, the arc surface annular groove with an arc surface can be more tightly connected to the drive shaft, thereby improving the connection accuracy, having a simple structure and being easy to install.

[0009] The utility model is further configured that: the support member is a support platform circumferentially arranged in the notch along the axis of the inner flange.

[0010] The effect that can be produced by adopting the above-mentioned technical scheme is: this scheme adopts setting up a support platform, in which the support platform is a plane in the notch, and the support platform can be used to support the seal of the bearing. When technical personnel in this field process and install the bearing, the support platform can place the seal more stably, reducing the difficulty of installation and making the sealing effect of the bearing better.

[0011] The utility model is further configured that: a weight-reducing groove is formed between two adjacent bolt seats, and a limiting wall is arranged between the weight-reducing groove and the two adjacent bolt seats.

[0012] The effect that can be produced by adopting the above-mentioned technical scheme is as follows: the existing third-generation wheel hub bearing inner flange generally has a bolt seat, and the bolt seat can be used to place bolts to facilitate the connection between the inner flange and the drive shaft. This scheme adopts a weight-reducing groove set between two adjacent bolt seats to make the weight of the inner flange lighter and the manufacturing cost lower. The limiting wall set between the weight-reducing groove and the two adjacent bolt seats can prevent the drive shaft from axially rotating easily after being connected to the inner flange, thereby improving the connection stability.

[0013] The utility model is further configured that each of the bolt seats is provided with a bolt hole.

[0014] The effect that can be produced by adopting the above technical solution is that by providing a bolt hole on the bolt seat, it is possible to facilitate the connection between the inner flange and the drive shaft and improve the connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of an embodiment of the utility model;

[0016] Figure 2 It is a structural diagram of the second side of the embodiment of the utility model;

[0017] Figure 3 It is a structural diagram of the first side of an embodiment of the utility model. DETAILED DESCRIPTION

[0018] An embodiment of the structure of an inner flange of a wheel hub bearing of the present invention is shown in the figure. To achieve the above-mentioned purpose, the present invention provides a structure of an inner flange of a wheel hub bearing, including a flange plate 1, a first side surface 2 and a second side surface 3. The first side surface 2 is convexly provided with a small inner ring 6, and the second side surface 3 is provided with a plurality of bolt seats 7. The plurality of bolt seats 7 are evenly distributed along the axis of the inner flange in the circumferential direction. The second side surface 3 is circumferentially provided with a first annular groove 4 along its axial position toward the direction of the small inner ring 6. A second annular groove 5 is formed between the end surface of the first annular groove 4 and the bolt seat 7. The second annular groove 5 and the first annular groove 4 are arranged in a stepped manner from top to bottom. The ring 6 is provided with a notch 8 in an annular direction toward the axial direction near one end of the first side surface 2, and a support member is provided in the notch 8. The existing flange generally adopts a flange arranged at the connection position between the second side surface 3 and the drive shaft to improve the connection strength between the flange plate 1 of the inner flange and the drive shaft, and the flange can be connected with the drive shaft. In this scheme, a first annular groove 4 and a second annular groove 5 are arranged on the second side surface 3. The first annular groove 4 and the second annular groove 5 are arranged in a stepped shape. When the inner flange is connected to the drive shaft, the drive shaft is placed corresponding to the position of the first annular groove 4 and the drive shaft can be partially embedded in the first annular groove 4 and contact the inner wall of the first annular groove 4. At this time, the drive shaft is located at a position corresponding to the second annular groove 5. The first ring groove 5 can also be accommodated in the second ring groove 5 and abut against the end face of the first ring groove 4 to avoid excessive connection between the drive and the inner flange and damage to the first ring groove 4 of the inner flange. At this time, those skilled in the art can complete the installation of the inner flange and the drive shaft by fixing the drive shaft to the inner flange. This solution adopts the arrangement of the first ring groove 4 and the second ring groove 5 to reduce the weight of the inner flange, and adopts the arrangement of a notch 8 on the first side surface 2. The notch 8 is arranged near one end of the first side surface 2 and is opened toward the axial direction of the small inner ring 6. Those skilled in the art can open the notch 8 by means of demolding to reduce the weight of the inner flange, and adopts the arrangement of a support in the notch 8 so that the bearing is tightly sealed when the bearing is installed. The sealing ring can be placed on the support member of the notch 8; the inner wall of the first annular groove 4 is arranged in an arc surface, and the first annular groove 4 is an arc surface annular groove. In this solution, the inner wall of the first annular groove 4 is arranged in an arc surface. When the inner flange is connected to the drive shaft, the arc surface annular groove with an arc surface can be more tightly connected to the drive shaft; the support member is a support platform 9 arranged in the notch 8 along the axis of the inner flange. In this solution, a support platform 9 is arranged. In this solution, the support platform 9 is a plane in the notch 8. The support platform 9 can be used to support the seal of the bearing. When technicians in this field process and install the bearing, the support platform 9 can place the seal more stably;A weight-reducing groove 10 is formed between two adjacent bolt seats 7, and a limiting wall 11 is provided between the weight-reducing groove 10 and the two adjacent bolt seats 7. The existing third-generation wheel hub bearing inner flange generally has a bolt seat 7, which can be used to place bolts to facilitate the connection between the inner flange and the drive shaft. In this solution, a weight-reducing groove 10 is provided between two adjacent bolt seats 7 to make the weight of the inner flange lighter, and the limiting wall 11 provided between the weight-reducing groove 10 and the two adjacent bolt seats 7 can make it difficult for the drive shaft to rotate axially after being connected to the inner flange; each of the bolt seats 7 is provided with a bolt hole 12, and the use of a bolt hole 12 on the bolt seat 7 can facilitate the connection between the inner flange and the drive shaft and improve the connection strength. ;

[0019] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A structure of an inner flange of a hub bearing, comprising a flange plate, a first side surface and a second side surface, wherein the first side surface is convexly provided with a small inner ring, and the second side surface is provided with a plurality of bolt seats, characterized in that: A plurality of bolt seats are evenly distributed in an annular direction along the axis of the inner flange, a first annular groove is formed in an annular direction along the axis of the second side surface toward the small inner ring, a second annular groove is formed between the end face of the first annular groove and the bolt seat, the second annular groove and the first annular groove are arranged in a stepped manner from top to bottom, a notch is formed in an annular direction toward the axis at one end of the small inner ring close to the first side surface, and a support member is arranged in the notch.

2. The structure of the inner flange of a hub bearing according to claim 1, characterized in that: The inner wall of the first annular groove is arranged in an arc surface, and the first annular groove is an arc surface annular groove.

3. The structure of the inner flange of a hub bearing according to claim 1, characterized in that: The support member is a support platform circumferentially arranged in the notch along the axis of the inner flange.

4. The structure of the inner flange of a hub bearing according to claim 1, characterized in that: A weight-reducing groove is formed between two adjacent bolt seats, and a limiting wall is arranged between the weight-reducing groove and the two adjacent bolt seats.

5. The structure of the inner flange of a hub bearing according to claim 1, characterized in that: Each of the bolt seats is provided with a bolt hole.

Images