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Wheel bearing device

A bearing device and wheel technology, applied in the directions of wheel bearing, bearing assembly, bearing, etc., can solve the problems of digging of the fitting part, increase the cost, hinder the assembly of the bearing, etc., and achieve the effect of preventing damage and increasing the cost.

Pending Publication Date: 2021-10-26
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the protective cover in Patent Document 1 increases the cost due to its anti-rust function
Additionally, if Figure 9 As shown, if the fitting clearance C between the guide portion P of the outer ring 200 and the steering knuckle 10 is too small, when the guide portion P is fitted into the opening 10a of the steering knuckle 10, scooping will easily occur at the fitting portion 2f. As a result, the insertability of the guide part P is deteriorated, which hinders the assembly of the bearing on the vehicle assembly line.

Method used

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Examples

Experimental program
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Embodiment Construction

[0038] Below, use figure 1 as well as figure 2 The wheel bearing device 1 which is the first embodiment of the wheel bearing device will be described.

[0039] Such as figure 1 As shown, the wheel bearing device 1 rotatably supports a wheel in a suspension device of a vehicle such as an automobile. The wheel bearing device 1 includes an outer ring 2 , a hub ring 3 , an inner ring 4 , rolling elements 5 , an inner side seal member 6 , and an outer side seal member 7 .

[0040] Such as figure 1 As shown, the outer ring 2 , which is the outer member, has a cylindrical shape and supports the hub ring 3 and the inner ring 4 . Double rows of outer raceway surfaces 2 a are provided on the inner peripheral surface of the outer ring 2 . An inner side opening 2 b capable of fitting with the inner side seal member 6 is provided at the inner side end portion of the outer ring 2 . At the outer end portion of the outer ring 2, an outer opening portion 2c capable of fitting with th...

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PUM

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Abstract

Provided is a wheel bearing device that is suitable in being able to prevent impairment in assemblability of the wheel bearing device to a knuckle without cost increase. A wheel bearing device (1) is provided with an inner member and an outer ring (2) which is an outer member having a vehicle-body-mounting flange part (2d), wherein the outer ring (2) has a pilot part (2e) disposed inward of the vehicle-body-mounting flange part (2d), and the pilot part (2e) has a fitting portion (2f) configured to be fitted to a knuckle (10) and a guiding portion (2g) having a diameter which gradually decreases inward from the inner-side end of the fitting portion (2f).

Description

technical field [0001] The present invention relates to a bearing device for a wheel. Background technique [0002] In the outer member of the wheel bearing device, the guide portion (inner side end portion) is fitted into a knuckle constituting the suspension device, and the vehicle body attachment flange portion is fastened to the knuckle. [0003] Here, in order to increase bearing rigidity, a wheel bearing device in which a fitting gap between a guide portion and a knuckle is reduced has been proposed (for example, refer to Patent Document 1). [0004] In the wheel bearing device of Patent Document 1, a boot is interposed between the guide portion and the knuckle. The cylindrical part fitted in the guide part in the protective cover is corrugated and has a plurality of folds. Accordingly, when the vehicle body mounting flange portion is fastened to the knuckle, the cylindrical portion of the boot is compressed to give a preload. [0005] However, the protective case i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/34F16C33/58F16C35/067B60B35/14
CPCB60B27/0073F16C19/186F16C2226/52F16C2326/02F16C33/581F16C33/586B60B27/0005B60B27/0094B60B2310/208B60B2380/12B60B2380/75F16C19/183
Inventor 福岛茂明永井奈都子
Owner NTN CORP