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Wheel support bearing assembly

A bearing device and wheel technology, applied in the directions of bearings, shafts and bearings, rolling contact bearings, etc., can solve problems such as difficulty in improving bearing rigidity and bearing size limitation

Active Publication Date: 2011-08-31
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the inner side, due to the relationship with the periphery, the size of the bearing is often limited, and it is difficult to increase the rigidity of the bearing

Method used

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  • Wheel support bearing assembly
  • Wheel support bearing assembly
  • Wheel support bearing assembly

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Experimental program
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Embodiment Construction

[0065] Combine below Figure 1 ~ Figure 3 , the first embodiment of the present invention will be described. This embodiment is a third-generation inner ring rotation type, which is suitable for a wheel bearing device for supporting a driven wheel. In addition, in this specification, when mounted on a vehicle, the side closer to the outer side in the vehicle width direction of the vehicle is called "outer side", and the side closer to the middle of the vehicle is called "inner side".

[0066] The bearing device for the wheel is composed of an outer member 1 that forms a plurality of rows of raceways 3, 4 on the inner periphery; an inner member 2 that forms raceways 5, 6 opposite to the above-mentioned raceways 3, 4 on the outer periphery; A plurality of rows of rolling elements 7 and 8 are formed between the opposing raceway surfaces 3 and 5 and between the raceway surfaces 4 and 6 of the outer member 1 and the inner member 2 . The bearing device for the wheel is a multi-row...

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PUM

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Abstract

To provide a wheel support bearing assembly, in which the rigidity of an outboard portion thereof can be increased without increasing the weight of the bearing assembly, the wheel support bearing assembly includes outer and inner members ( 1,2 ) and rows Lo and Li of rolling elements ( 7,8 ) interposed between outboard and inboard raceways ( 3 to 6 ) defined in the outer and inner members confronting each other. The inner member ( 2 ) includes a hub axle ( 18 ) having a wheel fitting flange ( 20 ) on an outboard side thereof, and an inner race member ( 19 ) mounted on an inboard end thereof. The hub axle has an outer diameter D 1 measured at a point P intermediate between Lo and Li is greater than the minimum diameter D 2 of the raceway ( 6 ) on the inboard side. A pitch circle diameter PCDo of the outboard row Lo is greater than PCDi of the inboard row Li.

Description

technical field [0001] The present invention relates to a bearing device for a wheel of an automobile or the like. Background technique [0002] A wheel of an automobile is rotatably supported by a suspension device via a wheel bearing device. Examples of performance required for a wheel bearing device include high load capacity and rigidity. In addition, there is a strong demand for weight reduction of automobile parts due to the increase in fuel costs and the like, and weight reduction of wheel bearing devices is also demanded. [0003] Conventional general bearing devices for wheels can satisfy the load capacity, but there are cases where the rigidity when the vehicle turns is not necessarily sufficient. In addition, in order to achieve stable running of the automobile, it is necessary to increase the rigidity of the bearing when the vehicle is turning. [0004] The wheel bearing unit adopts multiple rows of bearings, and is designed so that the weight of the vehicle a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C19/18B60B27/00
Inventor 服部直志小森和雄
Owner NTN CORP