Title:
作業工具
Document Type and Number:
Japanese Patent JP5783847
Kind Code:
B2
Abstract:
Grinder (1) as a power tool has a torque limiter (210). The torque limiter comprised a second bevel gear (211); a spindle (213); a flange (212) to which the rotation of the second bevel gear is transmitted, and a plurality of balls (214) which are disposed between the second bevel gear and the flange. The ball is positioned at a first region and the second bevel gear, the ball and the flange rotate integrally thereby the rotation is transmitted to the flange. On the other hand, in a state that a torque exerted on the spindle exceeding the predetermined threshold, a relative rotation between the second bevel gear and the flange is occurred and the ball moves from the first region to the second region while rolling by means of the relative rotation. Therefore, the transmission of the rotation from the second bevel gear to the flange is regulated, and the torque exerted on the spindle is regulated.
Inventors:
Hironori Ikuta
Sandside light
Sandside light
Application Number:
JP2011184189A
Publication Date:
September 24, 2015
Filing Date:
August 25, 2011
Export Citation:
Assignee:
Makita Corporation
International Classes:
B25F5/00; B24B23/02; F16H25/12; F16H35/10
Domestic Patent References:
| JP2007326168A | ||||
| JP2002264033A | ||||
| JP39000416Y1 | ||||
| JP3117730A | ||||
| JP2011104765A |
Foreign References:
| US3292754 | ||||
| US5092441 | ||||
| US3429407 |
Attorney, Agent or Firm:
Tetsuyuki Iwata
Toshiyuki Ikeda
Toshiyuki Ikeda