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Vehicle wheel bearing device

A bearing device and wheel technology, applied in the direction of wheel bearings, bearings, axles, etc., can solve the problems of indentation, increasing the shoulder height of the surface of the raceway, etc.

Active Publication Date: 2013-02-20
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of indentation in the shoulder of the raceway surface, it is necessary to increase the shoulder height of the raceway surface

Method used

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  • Vehicle wheel bearing device
  • Vehicle wheel bearing device
  • Vehicle wheel bearing device

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Embodiment approach

[0043] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0044] figure 1 It is a longitudinal sectional view showing an embodiment of the wheel bearing device of the present invention, figure 2 is showing figure 1 A longitudinal sectional view of a wheel bearing, image 3 (a) is shown figure 2 Longitudinal sectional view of the outer member of the image 3 (b) is shown image 3 An enlarged view of the main part of (a), Figure 4 (a) is shown figure 2 A longitudinal sectional view of a modified example of the outer member, Figure 4 (b) is shown Figure 4 An enlarged view of the main part of (a), Figure 5 (a) to Figure 10 (a) is shown figure 2 Longitudinal sectional views of other modifications of the outer member, Figure 5 (b) to Figure 10 (b) is shown Figure 5 (a) to Figure 10 Enlarged view of the main part of (a). In addition, in the following description, the outer side of the wheel...

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Abstract

Disclosed is a vehicle wheel bearing device that prevents edge loading of the osculating ellipse of a ball, and that increases service life and acoustic characteristics. In the vehicle wheel bearing device, which is configured from a double-row angular ball bearing, the shoulder height of shoulders (18) of an outer member (12) is set in the range of 0.35-0.50 times the ball diameter in the double-row of balls (14); the corners (19) of the shoulders (18) are each configured from a flank (19a) that is a straight line that is tangential to an outer rolling surface (12a), and a chamfered section (19b) that is rounded in an arc having a predetermined curvature radius (r); by means of a formed grindstone that shapes the double-row of outer rolling surfaces (12a), the corners (19) are formed at that same time, and are formed smoothly and continuously from each outer rolling surface (12a); and the length (h) in the radial direction of the flank (19a) is set to be at least 0.2 mm.

Description

technical field [0001] The present invention relates to a bearing device for a wheel for rotatably supporting a wheel of a vehicle such as an automobile, and more particularly, the present invention relates to a bearing device for a wheel capable of The contact ellipse of the balls is prevented from shoulder overtaking and side loads are generated, thereby improving the noise characteristics of the wheel bearing and the life of the vehicle bearing. Background technique [0002] As a wheel bearing device for supporting a wheel that rotatably supports a hub to which a wheel is mounted via a rolling bearing, there are wheel bearing devices for a driving wheel and a driven wheel. For structural reasons, the driving wheel inner-rotation type is used for the driving wheel, and both the inner-ring rotation type and the outer-ring rotation type are used for the driven wheel. From the standpoint of having desired bearing rigidity and exhibiting high durability against misalignment a...

Claims

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Application Information

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IPC IPC(8): F16C33/64B60B35/14B60B35/18F16C19/18
CPCB60B2900/321F16C19/08F16C2326/02B60B2900/133B60B2380/75B60B2380/12B60B2310/234B60B2380/73F16C2240/30F16C19/184B60B35/18F16C2240/34F16C2240/80F16C33/585F16C33/64F16C23/041
Inventor 小森和雄
Owner NTN CORP
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