Title:
電動工具
Document Type and Number:
Japanese Patent JP5030601
Kind Code:
B2
Abstract:
It is an object of the invention to provide a technique that contributes to increased operability in changing the rotational speed of a spindle in a power tool in which the rotational speed of the spindle can be changed in three levels by utilizing a planetary gear mechanism (8). A representative power tool (1) is characterized in that the third gear position in which the spindle (7) is rotated at the third speed is located in an intermediate position in the sliding direction of the speed changing part (26,30,37). The first speed change position in which the spindle (7) is rotated at the first speed is located on one side of the third speed change position, and the second speed change position in which the spindle is rotated at the second speed is located on the other side of the third speed change position. Therefore, during processing operation by using the power tool (1), shifting operation between the first and third speeds which is frequently performed can be done without the need to go through the second speed area each time. Further, shifting operation between the second and third speeds which is also frequently performed can be done without the need to go through the first speed area. Therefore, shifting operation for speed change can be facilitated, so that ease of use can be improved.
Inventors:
Takayuki Kuroyanagi
Hideki Abe
Hideki Abe
Application Number:
JP2007010992A
Publication Date:
September 19, 2012
Filing Date:
January 22, 2007
Export Citation:
Assignee:
Makita Corporation
International Classes:
B25F5/00; B23B45/00; B25B21/00
Domestic Patent References:
| JP3095407U | ||||
| JP2004237422A |
Foreign References:
| GB2396390A |
Attorney, Agent or Firm:
Tetsuyuki Iwata
Toshiyuki Ikeda
Toshiyuki Ikeda