Rear axle light-weight fixed type universal joint

CN120868148AActive Publication Date: 2025-10-31ZHEJIANG WANXIANG JIALONG MFG CO LTD
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Patent Information

Application Number
CN202511378217.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-25
Publication Date
2025-10-31
Estimated Expiration
2045-09-25

AI Technical Summary

Technical Problem

The existing fixed sliding cross ball joint + end sliding cross universal joint cannot meet the rear-wheel drive steering rigidity standard, and the fixed universal joint + three ball pin moving universal joint structure is heavy and has low transmission efficiency, which cannot meet the requirements of lightweight and high efficiency.

Method used

Design a lightweight fixed universal joint for the rear axle, which adopts an outer ball cage and a star-shaped sleeve structure. By setting inner and outer ball tracks and a cage, the movement trajectory of the steel ball in the ball track is constrained by the first and second type of raceways, increasing the fit clearance to reduce friction. The riveted structure limits the steel ball, achieving a maximum rotation angle of 32° and reducing the axial load on the cage.

Benefits of technology

The cage's structural strength and resistance to deformation have been enhanced, wear has been reduced, transmission efficiency has been improved, rear-wheel drive steering requirements have been met, weight has been reduced, and service life has been extended.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of automobile transmission, and particularly discloses a rear axle light-weight fixed universal joint which comprises an outer ball cage and a star-shaped sleeve, a retainer is arranged in the outer ball cage, a plurality of steel balls are arranged between the outer ball cage and the star-shaped sleeve, a plurality of windows used for restraining the steel balls are arranged on the retainer at equal intervals, and the steel balls are arranged in the windows. According to the ball bearing, the steel balls located between the first outer ball way and the first inner ball way, the steel balls restrained at the space intersection point of the track lines of the first outer ball way and the first inner ball way and located between the second inner ball way and the second outer ball way, the steel balls located between the first inner ball way and the second outer ball way are arranged on the inner wall of the first inner ball way, and the steel balls located between the second inner ball way and the second outer ball way are arranged on the inner wall of the outer ball way. And the steel ball is restrained at the space intersection point of the track lines between the first ball groove and the second ball groove, and the moving track of the steel ball is restrained through the cooperation of the first ball groove and the second ball groove, so that the working angle of the universal joint is adjusted, and the universal joint meets the steering requirement of a rear axle and meanwhile completes light weight.
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Citation Information

Patent Citations

  • Fixed end ball cage type constant velocity universal joint with high efficiency and long service life

    CN113623334A

  • Constant-speed transmission shaft fixing joint special for rear wheel

    CN117212351A

  • Counter track joint for large deflection angles

    CN1997836A

  • Sliding constant velocity universal joint

    JP2007132377A

  • Fixed type constant velocity universal joint

    JP2013133919A