Title:
SCREWDRIVER BIT WITH A SCREW SUPPORT MEANS, AND SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2010/101364
Kind Code:
A2
Abstract:
The present invention provides a screwdriver bit which can fasten a screw accurately to the desired position, and which has a structure for enabling a user to easily handle a screwdriver with both hands when a large rotating force is required for fastening the screw. The present invention also provides a screwdriver comprising said screwdriver bit. Accordingly, the present invention provides a screwdriver bit, comprising: a screw-holding unit (110) which applies a rotating force to a screw; a joint unit (130) inserted into a driver handle (500) or a bit insertion portion of an electric screwdriver; a rod-shaped main body (100) which interconnects the screw-holding unit (110) and the joint unit (130); an elastic means (310) for applying an elastic force in the lengthwise direction of the main body (100); a screw support cylinder (200) which covers the outer surface of the main body (100), and which receives, from said elastic means (310), an elastic force for returning the screw support cylinder (200) toward the joint unit (130), and which slides forward further than the screw-holding unit (110) in the lengthwise direction of the main body (100); and a fixed cylinder (400), one end of which is fixed at the main body (100) between the screw support cylinder (200) and the joint unit (130), and which accommodates the screw support cylinder (200) therein.
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Inventors:
CHOI SANG HO (KR)
Application Number:
PCT/KR2010/001100
Publication Date:
September 10, 2010
Filing Date:
February 23, 2010
Export Citation:
Assignee:
CHOI SANG HO (KR)
International Classes:
B25B23/08; B25B15/00; B25B15/02; B25B23/04
Foreign References:
| US6128982A1 | ||||
| KR20000014980U | ||||
| JPH0539869U | 1993-05-28 |
Attorney, Agent or Firm:
LEE, DONG KUK (KR)
이동국 (KR)
이동국 (KR)
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