Title:
作業工具
Document Type and Number:
Japanese Patent JP4659737
Kind Code:
B2
Abstract:
[Problem] To provide an effective technique for further improving the vibration reducing performance of a power tool. [Means for Solving the Problem] The invention provides a power tool which includes a tool bit, a first operating mechanism that linearly drives the tool bit and thereby causes the tool bit to perform a predetermined operation, and a dynamic vibration reducer 151 that reduces vibration in the operation of the tool bit. The dynamic vibration reducer includes a weight 153 that can linearly move under the action of biasing forces of a plurality of biasing springs 157 acting upon the weight 153 toward each other. The weight 153 is driven by a second operating mechanism 116 that mechanically excites at least one of the elastic elements, via the elastic element.
Inventors:
Hironori Ikuta
Application Number:
JP2006512790A
Publication Date:
March 30, 2011
Filing Date:
April 26, 2005
Export Citation:
Assignee:
Makita Corporation
International Classes:
B25D17/24; B06B1/12; B23D49/16; F16F7/10; F16F7/108; F16F15/02
Domestic Patent References:
| JPS57211482A | 1982-12-25 | |||
| JP2004042211A | 2004-02-12 | |||
| JPH01274973A | 1989-11-02 | |||
| JP2003039344A | 2003-02-13 |
Attorney, Agent or Firm:
Tetsuyuki Iwata
Toshiyuki Ikeda
Toshiyuki Ikeda