Title:
BELT-TYPE GRINDING TOOL
Document Type and Number:
WIPO Patent Application WO/2017/155107
Kind Code:
A1
Abstract:
Provided is a belt-type grinding tool in which a spring support member is prevented from pivoting in the direction in which compression of a spring is released due to an urging force received from the spring. This invention is provided with a spring support member (38) capable of pivoting between: a tension imparting position, at which a pressing support surface (46) presses an engaging part (44) of a spring seat (30), compresses and supports a spring (32) between the pressing support surface (46) and a pulley support bar (16), and applies tension to an endless grinding belt (20); and a tension release position at which the amount of compression of the spring (32) is reduced so that tension is reduced. The pressing support surface (46) of the spring support member (38) and the engaging part (44) of the spring seat (30) are shaped so that the line of action of a force received by the pressing support surface (46) from the engaging part (44) when the spring support member (38) is at the tension imparting position passes through the side of a pivot axis (R) in which a moment is produced that causes the spring support member (38) to pivot in the direction away from the tension release position.
Inventors:
SUZUKI YASUMASA (JP)
Application Number:
PCT/JP2017/009775
Publication Date:
September 14, 2017
Filing Date:
March 10, 2017
Export Citation:
Assignee:
NITTO KOHKI CO (JP)
International Classes:
B24B23/06; B24B21/00; B24B55/05
Domestic Patent References:
WO2014208589A1 | 2014-12-31 |
Foreign References:
DE102014107348A1 | 2015-11-26 | |||
JP2014166668A | 2014-09-11 | |||
JPH03154765A | 1991-07-02 | |||
JPS4852992U | 1973-07-09 |
Attorney, Agent or Firm:
ITOH, Shigeru et al. (JP)
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