WO2008149663A1 - Screw driver - Google Patents

Screw driver Download PDF

Info

Publication number
WO2008149663A1
WO2008149663A1 PCT/JP2008/059218 JP2008059218W WO2008149663A1 WO 2008149663 A1 WO2008149663 A1 WO 2008149663A1 JP 2008059218 W JP2008059218 W JP 2008059218W WO 2008149663 A1 WO2008149663 A1 WO 2008149663A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
air motor
body portion
main body
pressed against
Prior art date
Application number
PCT/JP2008/059218
Other languages
French (fr)
Japanese (ja)
Inventor
Ken Shibahara
Original Assignee
Makita Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Makita Corporation filed Critical Makita Corporation
Publication of WO2008149663A1 publication Critical patent/WO2008149663A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

Abstract

In a screw driver for driving a screw by moving a driver bit downward in the driving direction by rotating the driver bit with an air motor, there has been a problem of incomplete tightening of the screw as the main body portion floats due to reaction when the piston reaches the downward motion end. In the invention, an air motor is actuated again when the main body portion is pressed against the screw drive material and operated again, and the screw is tightened additionally. When the main body portion (2) is pressed against the screw drive material and operated again after the piston (22) reached the downward motion end and the air motor is stopped, an auxiliary air supply passage different from the main air supply passage for rotating the air motor is opened and the air motor is actuated again, thus tightening the screw additionally.
PCT/JP2008/059218 2007-06-08 2008-05-20 Screw driver WO2008149663A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-152762 2007-06-08
JP2007152762A JP4970154B2 (en) 2007-06-08 2007-06-08 Screw driving machine

Publications (1)

Publication Number Publication Date
WO2008149663A1 true WO2008149663A1 (en) 2008-12-11

Family

ID=40093488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059218 WO2008149663A1 (en) 2007-06-08 2008-05-20 Screw driver

Country Status (2)

Country Link
JP (1) JP4970154B2 (en)
WO (1) WO2008149663A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5985383B2 (en) * 2012-12-26 2016-09-06 株式会社マキタ Driving tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08336762A (en) * 1995-06-09 1996-12-24 Hitachi Koki Co Ltd Rotating direction switching lever for rotary pneumatic tool
JPH1190847A (en) * 1997-09-12 1999-04-06 Hitachi Koki Co Ltd Screw fastening machine to work with compressed air
JP2001105337A (en) * 1999-10-04 2001-04-17 Makita Corp Screwdriver
JP2003048173A (en) * 2001-08-08 2003-02-18 Max Co Ltd Air impact driver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154308A (en) * 1977-10-25 1979-05-15 Dresser Industries, Inc. Low torque automatic screwdriver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08336762A (en) * 1995-06-09 1996-12-24 Hitachi Koki Co Ltd Rotating direction switching lever for rotary pneumatic tool
JPH1190847A (en) * 1997-09-12 1999-04-06 Hitachi Koki Co Ltd Screw fastening machine to work with compressed air
JP2001105337A (en) * 1999-10-04 2001-04-17 Makita Corp Screwdriver
JP2003048173A (en) * 2001-08-08 2003-02-18 Max Co Ltd Air impact driver

Also Published As

Publication number Publication date
JP2008302477A (en) 2008-12-18
JP4970154B2 (en) 2012-07-04

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