PULLEY STRUCTURE - MITSUBOSHI BELTING LTD

Title:

PULLEY STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2013/191240

Kind Code:

A1

Abstract:

The present invention is related to a pulley structure that is provided with a tubular first rotating body around which a belt is wound, a second rotating body provided inside the first rotating body so as to be rotatable relative to said first rotating body, and a torsion coil spring which is housed in the space between the first rotating body and second rotating body. The torsion coil spring has: at one end, an end region in which the outer peripheral surface makes contact with either the first rotating body or second rotating body through a self-elastic restoring force in the large-diameter direction of the torsion coil spring in a state in which the pulley structure is stopped; at the other end, another end region in which the inner circumferential surface makes contact with the other rotating body in a state in which the pulley structure is stopped; and a center region. In cases where the torsion coil spring twists in the large-diameter direction due to the relative rotations of the two rotating bodies, the inner circumferential surface of at least a portion of the other end region of the torsion coil spring in the circumferential direction is separated from the other rotating body.

More Like This:

JP2001082583

PULLEY UNIT

Inventors:

SHIMAMURA HAYATO (JP)
DAN RYOSUKE (JP)
HARAGUCHI MAKOTO (JP)
IMAI KATSUYA (JP)

Application Number:

PCT/JP2013/066939

Publication Date:

December 27, 2013

Filing Date:

June 20, 2013

Export Citation:

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Assignee:

MITSUBOSHI BELTING LTD (JP)

International Classes:

F16H55/36; F16D3/74; F16D13/08; F16D41/20; F16F15/123; F16F15/129

Foreign References:

JP2008019959A	2008-01-31
JP2008175347A	2008-07-31
JP2012112480A	2012-06-14
JP2011511228A	2011-04-07
JPS3619622Y1
JPH03229019A	1991-10-11
JPH07293575A	1995-11-07
JP2008057763A	2008-03-13

Other References: