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Hub bearing

A wheel hub bearing and side track technology, applied in the field of wheel hub bearings, can solve problems such as response delay, achieve the effects of reducing response delay, improving handling stability, and suppressing processing costs

Pending Publication Date: 2022-06-21
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because, no matter how high-performance the computer is, if the reaction of the vehicle to the steering signal is too slow, in the turning motion of the vehicle after the steering, there will be a delay in the response of the vehicle to the steering, and it will be difficult to drive along the target trajectory.

Method used

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Embodiment Construction

[0038] based on figure 1 The hub bearing of the present invention will be described. figure 1 It is a cross-sectional view of a hub bearing of an automobile, which is an embodiment of the hub bearing of the present invention, having an outer ring as a stationary side raceway and a hub ring and an inner race as a rotating side raceway.

[0039] like figure 1 As shown, the hub bearing 1 rotatably supports the hub ring 3 and the inner ring 5 as the rotating side race ring via a plurality of balls 4 as rolling elements on the inner diameter side of the outer ring 2 as the stationary side race ring. The inner ring 5 is fixed to the hub ring 3 . According to this configuration, the inner peripheral surface of the outer ring 2 is provided with a plurality of rows of outer ring raceway surfaces 2a and 2b that are respectively on the stationary side, and the outer peripheral surfaces of the hub wheel 3 and the inner ring 5 are provided with the first and second rotating sides, respec...

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PUM

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Abstract

Provided is a hub bearing capable of reducing the response delay of the hub bearing itself and improving the steering stability of a vehicle. A hub bearing (1) is provided with: an outer ring (2) that is a stationary-side raceway ring; a hub ring (3) and an inner ring (5) as rotation-side orbital rings; and a plurality of balls (4) as rolling elements provided between the raceway surface of the stationary-side raceway ring and the raceway surface of the rotating-side raceway ring, in which the rolling contact portions between the raceway surfaces and the rolling elements are lubricated by grease. The surface roughness of at least one orbital plane selected from the orbital plane of the stationary-side orbital ring and the orbital plane of the rotating-side orbital ring is 0.03 [mu] mRa or less. The grease is such that the traction coefficient of the rolling contact portion is 0.04 or less at 40 DEG C and the vehicle speed is 20 km / h or more.

Description

technical field [0001] The present invention relates to a hub bearing for rotatably supporting a wheel of an automobile. Background technique [0002] Even with the development of autonomous driving technology of automobiles, from computer control to steering, vehicle handling stability (also simply referred to as vehicle handling stability) is still an important characteristic. This is because, no matter how high-performance the computer is, if the response of the vehicle to the turn signal is too slow, the turning motion of the steered vehicle will cause a delay in the response of the steered vehicle, making it difficult to travel along the target trajectory. As a factor affecting the steering stability of the vehicle, the bending rigidity of the hub bearing supporting the wheel can be cited (Non-Patent Document 1). Wheel hub bearings are wheel bearings that rotatably support the wheels of automobiles. By uniting the wheel hub and housing as peripheral components of the b...

Claims

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Application Information

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IPC IPC(8): F16C33/58F16C33/66C10M171/02B60B35/02
CPCF16C33/58F16C33/66C10M171/02B60B35/02B60B27/0005C10M171/00C10N2040/02C10N2030/06C10N2020/02F16C2326/02F16C19/184F16C33/6633F16C33/585F16C2240/54F16C2210/04F16C19/18
Inventor 坂口智也涩谷直人关诚
Owner NTN CORP
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