COMPOUND CONSTANT VELOCITY UNIVERSAL JOINT

Title:

COMPOUND CONSTANT VELOCITY UNIVERSAL JOINT

Document Type and Number:

WIPO Patent Application WO/2007/049512

Kind Code:

A1

Abstract:

Problems of a double cardan joint such as workability in greasing and lubrication characteristics are solved by a constant velocity universal joint of a compound form. The compound constant velocity universal joint has two constant velocity universal joints each having a circular tube-like outer ring (1) having axially extending guide grooves (1b) formed in its spherical inner peripheral surface; an inner ring (2) having axially extending guide grooves (2b) in its outer peripheral surface; torque transmission balls (4) singly placed in ball tracks formed by cooperation of the guide grooves (1b) of the outer ring (1) and the guide grooves (2b) of the inner ring (2); and a retainer (5) for retaining the balls (4). The outer rings (1) are coaxially integrally joined back-to-back, and the gap between the outer peripheral surface on the opening side of each outer ring (1) and the shaft (3, 10) connected to each inner ring (2) is covered with a boot (8) with a metal ring.

Inventors:

SAKAGUCHI AKIO (JP)
KURIKI KOUSEI (JP)

Application Number:

PCT/JP2006/320932

Publication Date:

May 03, 2007

Filing Date:

October 20, 2006

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
SAKAGUCHI AKIO (JP)
KURIKI KOUSEI (JP)

International Classes:

F16D3/84; F16D3/20; F16D3/2245; F16J3/04; F16J15/52

Foreign References:

JPH07269585A	1995-10-17
JPH11159538A	1999-06-15
JP2004162882A	2004-06-10
US3017775A	1962-01-23
DE2949714A1	1981-06-25

Other References: