Title:
PULLEY UNIT AND SHIELDING DEVICE
Document Type and Number:
Japanese Patent JP2016037837
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pulley unit capable of reducing operation force when lifting a shielding material.SOLUTION: The present invention provides a pulley unit comprising a loop-shaped cord, a pulley for hooking the cord and first and second pad parts for pressing the cord to the pulley, in which the first and second pad parts are respectively provided so as to press a part for adding force to the cord, to the pulley in the direction for separating the cord from the pulley when pulling first and second cord parts of the cord pulled out of the pulley, and the first and second pad parts have respectively a constitution of the following (1) or (2). (1) This is a shape of expanding to the outside more than a concentric circular arc with the pulley. (2) This is the same as a radius of curvature of the concentric circular arc with the pulley or is smaller in the radius of curvature than this, and is 30 degrees or less in a contact angle with the cord.SELECTED DRAWING: Figure 6
Inventors:
HATANO YOSHIYUKI
Application Number:
JP2014163894A
Publication Date:
March 22, 2016
Filing Date:
August 11, 2014
Export Citation:
Assignee:
TACHIKAWA BLIND MFG
International Classes:
E06B9/322; A47H11/06
Domestic Patent References:
| JPH0678595U | 1994-11-04 | |||
| JPH06146754A | 1994-05-27 |
Foreign References:
| US20050211394A1 | 2005-09-29 |
Attorney, Agent or Firm:
sk patent corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito