Bearing device for wheel

A bearing device, wheel bearing technology, applied in the directions of axles, wheels, bearing components, etc., can solve problems such as no existing technology, and achieve the effects of preventing creep, restraining the reduction of fitting interference, and restraining the change of bearing stiffness
CN1886600AInactive Publication Date: 2006-12-27NTN CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NTN CORP
Publication Date
2006-12-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

To provide a bearing device for a wheel installed on a light-weight light alloy knuckle and capable of preventing preload reduction and bearing creep from occurring due to temperature rise. This bearing device for the wheel comprises a hub wheel (1) integrally having a wheel mounting flange (4) at one end and having a small diameter step part (5) axially extending from the wheel mounting flange (4) formed therein, a wheel bearing (3) formed of a double row bearing disposed in the small diameter step part (5), and the knuckle (2) forming a suspension device and formed of a light alloy. The wheel bearing (3) is press-fitted into the knuckle (2) at a specified interference, and the hub wheel (1) is rotatably pivoted on the knuckle (2). A pair of annular grooves (18) are formed in a loading area on the outer periphery of the outer ring (12) of the wheel bearing (3), and resin bands (19) formed of a heat resistant polyamide synthetic resin and having a coefficient of linear expansion of 8 to 16 x 10<-5> / DEG C are filled in the annular grooves (18) by injection molding.
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Description

technical field

[0001] The present invention relates to a bearing device for a wheel, and more particularly relates to the improvement of the installation structure of the wheel bearing. Background technique

[0002] Such as Figure 14 As shown, a bearing device 80 for a wheel in the prior art includes: a hub wheel 81 for fixing a brake disc 87 and a wheel (not shown) thereon; an outer ring 82 and a pair of inner rings 83 a wheel bearing 84 for rotatably supporting the hub wheel 81; a steering knuckle 85 for supporting the wheel bearing 84 on the vehicle body; and a constant velocity universal joint 86 adapted to be connected to the hub wheel 81 for For transmitting power from a drive shaft (not shown) to hub wheel 81.

[0003] Although ferrous metals such as malleable cast iron having substantially the same linear thermal expansion coefficient as the material forming the hub wheel 81 and the like are used as members forming the bearing device 80, especially the steering kn...

Claims

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