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Patent Searching and Data


Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2012/114860
Kind Code:
A1
Abstract:
This electric tool is provided with a reduction mechanism comprising a switching member capable of sliding in the axial direction, and a gear member engageable with the switching member. A reduction-ratio-switching means has a shifting actuator for causing the switching member to slide, a drive state detector for detecting the drive state of a motor, a slide position detector for detecting the slide position of the switching member, and a controller for starting the shifting actuator and temporarily changing the rotation power of the motor. The controller changes the relative rotation speed of the switching member and the gear member at incomplete shifting, that is, when the switching member has not yet moved to the target position by sliding.

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Inventors:
INAGAKI KENICHIRO
KAIZO HIROYUKI
ATSUMI MASATOSHI
ARIMURA TADASHI
YAMADA YUTAKA
Application Number:
PCT/JP2012/052671
Publication Date:
August 30, 2012
Filing Date:
February 07, 2012
Export Citation:
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Assignee:
PANASONIC ECO SOLUTIONS POWER TOOLS CO LTD (JP)
INAGAKI KENICHIRO
KAIZO HIROYUKI
ATSUMI MASATOSHI
ARIMURA TADASHI
YAMADA YUTAKA
International Classes:
B25F5/00; F16D48/06; F16H61/02
Foreign References:
JP2009056590A2009-03-19
JP3516084B22004-04-05
JPH08270780A1996-10-15
JP2003206960A2003-07-25
JP2008180390A2008-08-07
JP2009056590A2009-03-19
JP2009078349A2009-04-16
Other References:
See also references of EP 2679346A4
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
Download PDF:
Claims: