SCREWDRIVER - HANGZHOU GREAT STAR TOOLS CO LTD

Title:

SCREWDRIVER

Document Type and Number:

WIPO Patent Application WO/2012/095000

Kind Code:

A1

Abstract:

A screwdriver comprises a tip barrel, a rotary tip rack and a push rod. The rotary tip rack is rotatably disposed at the rear of the tip barrel, the rotary tip rack is provided with axial accommodation holes to accommodate tips, and the accommodation holes may be rotated to axially correspond to an inner hole of the tip barrel. The push rod is disposed at the rear of the rotary tip rack and axially corresponds to the inner hole of the tip barrel. The inner hole of the tip barrel comprises a torque transfer segment at a front portion and a guide segment at a rear portion. The walls of the guide segment serve as a guide surface. The screwdriver may further comprise a hand grip and a push button assembly. When the push button assembly is positioned at a first positioning portion at a front portion of a slideway on the hand grip, the push rod extends into an accommodation hole on the tip rack, and a tip in the accommodation hole is pushed to the tip barrel on the hand grip until the tip protrudes from the tip barrel. When the push button assembly is located at a rear portion of the slideway on the hand grip, the push rod is located at the rear of the tip rack, and pulls the corresponding tip back into the corresponding accommodation hole. The screw driver requires few components, has a simple structure, and allows for easy and convenient tip changes.

More Like This:

JP3198346

Electric socket ratchet wrench

Inventors:

WANG WEIYI (CN)

Application Number:

PCT/CN2012/070220

Publication Date:

July 19, 2012

Filing Date:

January 11, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HANGZHOU GREAT STAR TOOLS CO LTD (CN)
HANGZHOU GREAT STAR IND CO LTD (CN)
WANG WEIYI (CN)

International Classes:

B25B15/04; B25B23/00; B25B23/16

Foreign References:

CN102114623A	2011-07-06
CN201960512U	2011-09-07
CN201960511U	2011-09-07
CN201055983Y	2008-05-07
US6928908B1	2005-08-16
CN2071111U	1991-02-13
US6138537A	2000-10-31
US20070289418A1	2007-12-20
CN101890688A	2010-11-24
US6134995A	2000-10-24
US6138537A	2000-10-31
US7028593B1	2006-04-18

Other References: