Automobile hub bearing unit

An automobile wheel hub and bearing technology, applied in bearing components, bearings, roller bearings, etc., can solve the problems of rolling contact surface failure, abnormal rotation temperature rise, rolling element sticking, etc., to achieve large axial bearing capacity, processing and Easy assembly of finished products

Active Publication Date: 2011-07-27
ZHEJIANG ZHAOFENG MECHANICAL & ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the tapered roller bearing is made of high-carbon chromium bearing steel, while the brake disc is made of carbon steel. When the temperature of the tapered bearing changes during operation, the thermal expansion coefficients of the two materials will be different, which will cause the outer ring of the bearing to be different from the bearing steel. The interference fit between the brake discs changes, thereby changing the internal clearance of the bearings that was originally controlled very precisely, resulting in abnormal temperature rise in rotation, stagnation of the rolling elements, and early failure of the rolling contact surface

Method used

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Embodiment Construction

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] figure 1 Shown is the automobile hub bearing unit of the present invention, which includes a brake disc 1 and a drum 2. A protruding shaft 21 is provided in the middle of the drum 2, and two inner rings 3 are sleeved on the protruding shaft 21. The ring 3 is provided with a conical surface outer raceway 31, and the inner side of the center hole of the brake disc 1 is provided with two parallel conical surface inner raceways 11, and the conical surface inner raceway 11 is connected with the conical surface outer raceway. Tapered rollers 4 are arranged between 31, and nuts 7 are arranged at the end of the protruding shaft 21, and the nuts 7 are in contact with the outer surface of the inner ring 3.

[0017] The tapered rollers 4 are guided by a cage and form an inner ring assembly with the inner ring 3 . The brake disc 1 is combined w...

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Abstract

The invention discloses an automobile hub bearing unit which comprises a braking disc and a rotating drum, wherein a convex shaft is arranged at the middle part of the rotating drum; two inner rings are sleeved on the convex shaft; conical-surface outer raceways are arranged on the inner rings; two rows of parallel conical-surface inner raceways are arranged inside the center hole of the braking disc; a conical roller is arranged between each conical-surface inner raceway and each conical-surface outer raceway; nuts are arranged at the end part of the convex shaft; and the nuts are in contactwith the outer side surfaces of the inner rings. In the invention, because the technical scheme is adopted, after the outer ring of a conical hub bearing and the braking disc are integrated into a whole, the machining of the raceways and the assembly of finished products are realized.

Description

technical field [0001] The invention relates to an automobile chassis part, in particular to an automobile wheel hub bearing unit of an automobile brake disc. Background technique [0002] Hyundai automobiles have generally adopted hub bearing units as wheel slewing bearing components, but due to the limitation of structure and installation space, some models adopt the first generation hub bearing embedded on the brake disc, and then connect the drum to realize the slewing bearing. Due to the heavy load of this model and the requirement of a large axial bearing capacity, the equipped bearings must be conical hub bearings with large specifications. [0003] In addition, the tapered roller bearing is made of high-carbon chromium bearing steel, while the brake disc is made of carbon steel. When the temperature of the tapered bearing changes during operation, the thermal expansion coefficients of the two materials will be different, which will cause the outer ring of the bearing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/38F16C33/58F16C33/36F16C33/76B60T1/06
CPCF16C19/386
Inventor 孔爱祥康乃正周守虎
Owner ZHEJIANG ZHAOFENG MECHANICAL & ELECTRONICS CO LTD
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