Title:
FIXING IMPLEMENT MAGNETIC ATTACHMENT ASSISTANCE TOOL AND ELECTRIC SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2017/109938
Kind Code:
A1
Abstract:
Provided are: a fixing implement magnetic attachment assistance tool with which not only iron but also stainless steel fixing implements can be magnetically attached to the tip of a screwdriver bit by inserting the bit and magnetizing same; and an electric screwdriver using said tool. The fixing implement magnetic attachment assistance tool is provided with: a magnetic attachment assistance tool body A in which multiple permanent magnets 21 are formed in a petaloid cylinder by joining the permanent magnets 21 with the ends of the same polarity adjacent to each other in a bundle without gaps so that a hollow through hole 13 is formed in the center; and a magnetic force - reinforcing member 50 made of a cylindrical ferromagnetic body with a smaller diameter than the magnetic attachment assistance tool body A. For the multiple permanent magnets 21: the direction of magnetization is regulated so that the lines of magnetic force point toward the tip 41 at an inclined angle with respect to the axis line of a screwdriver bit 40 that is inserted in the hollow through hole 13; and the magnetic force lines are made to pass through the magnetic force-reinforcing member 50, through which the screwdriver bit 40 is inserted so that the reinforcing member is adjacent to the magnetic attachment assistance tool body A on the tip-side thereof .
Inventors:
NAKASHOUYA HIDEO (JP)
Application Number:
PCT/JP2015/086227
Publication Date:
June 29, 2017
Filing Date:
December 25, 2015
Export Citation:
Assignee:
KOWA KANZAI CORP (JP)
International Classes:
B25B23/12
Foreign References:
| JP3201631U | 2015-12-17 | |||
| JPS59136999A | 1984-08-06 | |||
| US20070234857A1 | 2007-10-11 | |||
| JP2004160616A | 2004-06-10 | |||
| JPS5847476U | 1983-03-30 |
Attorney, Agent or Firm:
NAKAI, Hiroyuki et al. (JP)
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