FIXED TYPE CONSTANT VELOCITY UNIVERSAL JOINT FOR USE IN REAR-WHEEL DRIVE SHAFT

Title:

FIXED TYPE CONSTANT VELOCITY UNIVERSAL JOINT FOR USE IN REAR-WHEEL DRIVE SHAFT

Document Type and Number:

WIPO Patent Application WO/2018/168625

Kind Code:

A8

Abstract:

This fixed type constant velocity universal joint (3) is equipped with an outer joint member (31), an inner joint member (32), eight balls (33), and a cage (34). The center of curvature (O31d) of the track groove (31d) of the outer joint member (31) and the center of curvature (O32e) of the track groove (32e) of the inner joint member (32) are each offset from the joint center (O(f)) by equal distances on opposite sides of the joint center (O(f)) in the axial direction. The ratio (PCDBALL)/(DBALL) of the pitch circle diameter (PCDBALL) of the balls (33) and the diameter (DBALL) of each ball (33) is 3.70–3.87. Furthermore, the ratio (WI·TRUCK/DBALL) of the axial-direction length (WI·TRUCK) of the track groove (32e) of the inner joint member (32) and the diameter (DBALL) of each ball is 1.1–1.3.

Inventors:

KOBAYASHI TOMOSHIGE (JP)
KOBAYASHI MASAZUMI (JP)

Application Number:

PCT/JP2018/008920

Publication Date:

September 26, 2019

Filing Date:

March 08, 2018

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

F16D3/224

Attorney, Agent or Firm:

SHIROMURA Kunihiko et al. (JP)

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