Title:
PULLEY STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2012/029815
Kind Code:
A1
Abstract:
Provided is a pulley structure in which the action of excessive force on a coil spring can be suppressed to prevent damage to the coil spring, variation in friction torque can be suppressed, and the degree of freedom in the design can be increased by freely varying the friction torque. A drive pulley structure (1) has: a cylindrical pulley member (2) around which a transmission belt (106) is wound; a hub structure (3) provided to the inner side of the pulley member (2) so as to be capable of rotating relative to the pulley member (2); a coil spring (4) fixed at one end (4a) to the hub structure (3); a tapered section (5) to which the other end (4b) of the coil spring (4) is fixed, the tapered section (5) having a conical surface for which the rotational axis (J) of the hub structure (3) serves as the cone axis; and a friction member (6) interposed between the conical surface of the tapered section (5) and the pulley member (2); the coil spring (4) being interposed while compressed in the direction of the rotational axis (J) of the hub structure (3); and the tapered section (5), the friction member (6), and the pulley member (2) being pressed together by the return force (P) of the coil spring (4).
Inventors:
ISHIDA TOMOKAZU
Application Number:
PCT/JP2011/069669
Publication Date:
March 08, 2012
Filing Date:
August 30, 2011
Export Citation:
Assignee:
MITSUBOSHI BELTING LTD (JP)
ISHIDA TOMOKAZU
ISHIDA TOMOKAZU
International Classes:
F16H55/36; F16D43/21
Foreign References:
| DE10012233A1 | 2001-09-20 | |||
| JP2007113634A | 2007-05-10 | |||
| JP2006038183A | 2006-02-09 | |||
| JP2008180261A | 2008-08-07 | |||
| JP3268007B2 | 2002-03-25 | |||
| JP2003322174A | 2003-11-14 |
Other References:
See also references of EP 2626595A4
Attorney, Agent or Firm:
OGURI Shohei et al. (JP)
Shohei Oguri (JP)
Shohei Oguri (JP)
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Claims: