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Title:
CONSTANT VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2013/058059
Kind Code:
A1
Abstract:
Provided is a constant velocity universal joint which has a reduced maximum outer diameter and for which a thermoplastic elastomer boot having a mounting section formed in a cylindrical shape can be used to thereby provide the constant velocity universal joint with excellent durability and seal characteristics, the mounting section being adapted for mounting to an outer joint member. The opening of the mouth of an outer joint member (1) is configured so that large-diameter sections (4a) have formed thereon circumferential protrusions (35) and circumferential recesses (36) and so that, in the small-diameter sections (4b), the entire circumferential range of the small-diameter sections (4b) has a rectilinear longitudinal cross-sectional shape. An intermediate member (50) is a short cylindrically shaped body and has an outer peripheral surface having a cylindrical surface shape. The intermediate member (50) has thick-walled sections (60) which fit in the small-diameter sections (4b) and circular arc-shaped connection sections (61) which connect the thick-walled sections (60). Cutouts with which the circumferential protrusions engage are formed in the portions of the intermediate member (50) which correspond to the circumferential protrusions (35).

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Inventors:
TAKABE SHINICHI (JP)
Application Number:
JP2012/074289
Publication Date:
April 25, 2013
Filing Date:
September 21, 2012
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16D3/84; F16D3/205; F16J3/04; F16J15/52
Foreign References:
DE102006000680B32007-08-02
JP2007120580A2007-05-17
JP2004156706A2004-06-03
JP2004211850A2004-07-29
JP2006275169A2006-10-12
JP2009527707A2009-07-30
JPH0710562U1995-02-14
JP2004116532A2004-04-15
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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Claims: