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Bearing device for wheel

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

Active Publication Date: 2015-09-02
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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  • Bearing device for wheel
  • Bearing device for wheel
  • Bearing device for wheel

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Experimental program
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Embodiment approach

[0042] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0043] 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 An enlarged view of the main part of (a). In addition, in the following description, the outer side of the wh...

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Abstract

[Object] A wheel bearing apparatus is provided which can prevent an edge road of a contact ellipse of a ball and improve noise level and life of the bearing. [Solution] In the wheel bearing apparatus configured of a double row angular contact ball bearing, a height of a shoulder of a shoulder portion 18 of an outer member 12 with respect to a ball diameter of a double ball 14 row is set to be in a range of 0.35 to 0.50. A corner 19 of the shoulder portion 18 is configured of a relief surface 19a which is formed in a straight line that is a tangent line of an outer raceway surface 12a, and a chamfered portion 19b which is round in a circular arc having a predetermined radius of curvature r. The corner 19 is formed simultaneously by a formed grinding wheel forming the double row outer raceway surface 12a and formed smoothly continuous from each outer raceway surface 12a. A length in the radial direction of the relief surface 19a is set to be greater than or equal to 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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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/64B60B35/14B60B35/18F16C19/18
CPCF16C2240/34F16C2326/02F16C2240/80F16C19/08B60B2380/75B60B2380/12B60B2310/234B60B2380/73F16C19/184F16C33/64B60B35/18B60B2900/321B60B2900/133F16C2240/30F16C33/585F16C23/041
Inventor 小森和雄
Owner NTN CORP
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