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Hub unit bearing

A wheel hub unit and bearing technology, which is applied in the direction of wheel bearings, bearings, hubs, etc., can solve the problems of low degree of freedom, increased processing cost, and inability to fully ensure the fitting strength, so as to maintain the strength and ensure the fitting strength. Effect

Active Publication Date: 2013-07-17
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, in the case of such a structure, it is necessary to form the bulging portion 32 on the cover 17b, so the material constituting the 17b needs to use a material with high ductility, which reduces the degree of freedom in material selection and increases the processing cost. s reason
In addition, there is a problem that the cover 17b made of a material with high ductility cannot sufficiently secure its fitting strength with respect to the outer ring member 2.
Therefore, it can be seen that it is difficult to implement this structure in reality

Method used

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Examples

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Embodiment Construction

[0077] The first example of embodiment

[0078] Figure 1 to Figure 10 A first example of an embodiment of the hub unit bearing of the present invention is shown. The hub unit bearing 33 of this example is the hub unit bearing that drive wheel is used, as figure 1 As shown, the hub unit bearing 33 includes: an outer wheel member 34; a hub 35 as an inner wheel member; a plurality of balls 36 as rolling elements; sealing devices 37a, 37b; a rotation speed detection device 38;

[0079] The above-mentioned outer wheel member 34 is a stationary wheel, which is embedded in a holding hole 41 of a steering knuckle 40 fixed on the vehicle body (not shown), and a stationary side flange 42 provided on the outer peripheral surface of the outer wheel member 34 is fastened by bolts 43 . It is fixed on the steering knuckle 40 , so that the outer wheel member 34 is combined and fixed on the steering knuckle 40 .

[0080] In addition, the hub 35 is a rotary wheel and is formed by combining...

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Abstract

Provided is a hub unit bearing wherein a cover can be firmly fitted with an outer ring member, and it is difficult for foreign matter to enter inside through a water drainage hole formed in the cover. The cover that covers the inside end section in the axial direction of the hub unit bearing includes a disk section, a small-diameter cylindrical section bent in the axial direction from the outer perimeter edge section of the disk section and a large-diameter cylindrical section. A cut and raised section that is cut and raised toward the inside in the radial direction is formed in the small-diameter cylindrical section, and a water drainage hole that passes through from inside to outside the cover is provided in the portion that is cut and separated from the small-diameter cylindrical section.

Description

technical field [0001] The present invention relates to a hub unit bearing for rotatably supporting a wheel of an automobile with respect to a suspension device. More specifically, the present invention relates to a hub unit bearing provided with a cover that covers the axially inner ends of an outer wheel member and an inner wheel member, prevents foreign matter from entering the inner space, and has a Drain holes for foreign matter in the space. Background technique [0002] In order to rotatably support a wheel of an automobile with respect to a suspension device, a hub unit bearing composed of a rolling bearing assembly is used. In recent years, it has been widely used to install a rotation speed detection device for detecting the rotation speed of the wheel on the hub unit bearing of this kind to control the anti-lock braking system (ABS: Anti-locked Braking System) or the traction control system (TCS: Traction Control System). [0003] As an example of such a hub un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B35/18B60B35/02B60B35/14F16C19/00F16C33/76F16C33/78F16C41/00G01P3/487
CPCB60B2900/211F16C19/186B60B2380/32B60B2900/5114F16C33/78B60B27/0073B60B35/14B60B2380/75F16C41/007B60Y2200/11F16C33/7896F16C33/805G01P3/487F16C19/00F16C2326/02B60B35/18G01P3/443B60B2380/12B60B35/02F16C41/00B60B2900/321B60B27/0005F16C33/723B60B27/0068B60B2380/73B60B2380/90B60B2900/5112F16C19/08F16C33/76F16C35/042
Inventor 中村雄二金子吉男
Owner NSK LTD
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