Title:
PULLEY STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2017/188389
Kind Code:
A1
Abstract:
The present invention pertains to a pulley structure (1) equipped with an outer rotating body (2), an inner rotating body (3), and a coil spring (4), said pulley structure 1 characterized in that a cross section of the spring wire of the coil spring (4) along a direction running along the rotational axis and parallel to the rotational axis is a trapezoidal shape, the length Ti [mm] of an inner-diameter-side portion in the rotational axis direction in the cross section is greater than the length To [mm] of an outer-diameter-side portion in the rotational axis direction in the cross section, and when the number of windings of the coil spring (4) is N, expression (1) is satisfied.
N×(Ti-To)/2<1 … (1).
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Inventors:
SHIMAMURA HAYATO (JP)
IMAI KATSUYA (JP)
DAN RYOSUKE (JP)
IMAI KATSUYA (JP)
DAN RYOSUKE (JP)
Application Number:
PCT/JP2017/016771
Publication Date:
November 02, 2017
Filing Date:
April 27, 2017
Export Citation:
Assignee:
MITSUBOSHI BELTING LTD (JP)
International Classes:
F16H55/36
Foreign References:
| JP2014114947A | 2014-06-26 | |||
| JPS57117426U | 1982-07-21 |
Other References:
See also references of EP 3450799A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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