Title:
SCREW TIGHTENING DEVICE AND SCREW FEEDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/091487
Kind Code:
A1
Abstract:
A screw tightening device having an impact mechanism for applying rotational
impact force in the screw tightening direction to a screw tightening driver bit
and also having a screw feeding device for feeding a large number of screws on a
piece by piece basis to screw tightening positions, wherein the stroke of a screw
tightening device body is detected to shutoff a drive system, where the stroke
corresponds to the amount of screw tightening and is measured in the screw tightening
direction. The screw tightening device has body detection means (40) for detecting
the upper end of the stroke of a feeder casing (32) in the screw feeding device (30),
and the body detection means (40) shuts off an electric motor (11)(drive system),
where the stroke of the feeder casing (32) is the distance in the direction of the
screw tightening axis of the screw tightening device body (10) and is defined
relative to a base casing (31).
Inventors:
UKAI TOMOHIRO (JP)
SHIBATA YOSHINORI (JP)
SHIBATA YOSHINORI (JP)
Application Number:
PCT/JP2007/051773
Publication Date:
August 16, 2007
Filing Date:
February 02, 2007
Export Citation:
Assignee:
MAKITA CORP (JP)
UKAI TOMOHIRO (JP)
SHIBATA YOSHINORI (JP)
UKAI TOMOHIRO (JP)
SHIBATA YOSHINORI (JP)
International Classes:
B25B23/02; B25B21/02
Foreign References:
JPH10337674A | 1998-12-22 | |||
JP3268026B2 | 2002-03-25 | |||
JPH0486173U | 1992-07-27 | |||
JPH07266246A | 1995-10-17 | |||
JPH08174441A | 1996-07-09 | |||
JPS4916748B1 | 1974-04-24 |
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P.C. (Sakae 2-chome Naka-ku Nagoya-shi Aichi, 08, JP)
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