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Wheel bearing device

A bearing device and wheel technology, applied in the direction of bearing assembly, bearing, axle, etc., can solve the problems of reduced assembly of bearing devices, stress concentration torque transmission performance, poor durability, etc., to achieve assembly, long-term stable operation. Effect of torque transfer performance

Inactive Publication Date: 2016-01-20
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, the wheel bearing device described in Patent Document 2 still has room for improvement.
To give an example, if the bolt member used for fastening and rejoining the hub ring and the outer joint member is inappropriate in size of each part constituting it, the assemblability of the bearing device will be reduced, and the bearing device will be damaged. Unsuitable stress concentration will adversely affect the torque transmission performance and durability life, etc.

Method used

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Embodiment Construction

[0060] Below, based on Figure 1 to Figure 14 Embodiments of the present invention will be described.

[0061] figure 1 It is a sectional view showing the wheel bearing device according to the first embodiment of the present invention. The wheel bearing device shown in this figure is composed mainly of two rows of wheel bearings 2 including a hub 1 and a constant velocity universal joint 3 integrally. In addition, in the following description, the inner side and the outer side refer to the inner side and the outer side of the vehicle width direction of the vehicle when the wheel bearing device is mounted on the vehicle, respectively. exist figure 1 In the middle, the right side is the built-in side, and the left side is the external side.

[0062] The constant velocity universal joint 3 is composed of the following main components: a joint outer ring 5 as an outer joint member; a joint inner ring 6 as an inner joint member disposed on the inner diameter side of the joint...

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Abstract

Assemblability of the bearing device for a wheel is improved, and predetermined torque transmission performance can be stably maintained over a long period of time. Press the shaft part (12) of the joint outer ring (5) provided with the convex part (35) extending in the axial direction into the hole part (22) of the hub ring (1), The inner diameter surface (37) of the part fitting hole (22a) forms a concave part (36) by the convex part (35), thereby constituting a concave-convex fit in which the entire area of ​​the fitting part of the convex part (35) and the concave part (36) is in close contact. Structure (M). Moreover, after the concave-convex fitting structure (M) is formed, the bolt member (50) is fastened to the bolt hole (13) provided in the shaft portion (12) of the joint outer ring (5), thereby restricting the hub ring (1 ) from the joint outer ring (5). As the bolt member (50), when the outer diameter of the supporting surface (50a1) is d1 and the shaft diameter is d2, a bolt member satisfying the relational expression of 2.3≤(d1 / d2)2≤4.9 is used.

Description

technical field [0001] The present invention relates to a wheel bearing device for rotatably supporting a wheel with respect to a vehicle body in a vehicle such as an automobile. Background technique [0002] In the wheel bearing device, the first-generation structure in which two rows of rolling bearings are used in combination has evolved to the second-generation structure in which the body mounting flange is integrally provided on the outer member, and a further development of the two-row rolling bearing One of the two inner raceway surfaces of the third generation is formed on the outer circumference of the hub ring with the wheel mounting flange, and further, the development of one of the two inner raceway surfaces of the two-row rolling bearing is formed on the hub ring The outer periphery and the other are formed on the outer periphery of the outer joint member of the constant velocity universal joint. [0003] For example, Patent Document 1 describes an example of w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B35/14B60B35/18F16C19/18F16C33/64F16C33/76F16D1/06F16D3/20
CPCF16D3/223F16D2003/22326F16C35/0635F16C2326/02B60B27/0026B60B27/0042B60B2900/115B60Y2200/11F16C19/527F16D2001/103Y10T403/7026F16D1/072F16D2300/08F16D1/108F16C33/768F16C2226/60F16C19/184F16D1/0858F16C19/186F16D3/24
Inventor 梅木田光小泽仁博浅野祐一
Owner NTN CORP