Abrégé

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 .

Classes IPC  ?

• B25B 23/12 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens magnétiques

Abrégé

Provided are: a magnetic attachment aid for a fixture in which a driver bit is inserted and magnetized, whereby not only an iron fixture but also a stainless steel fixture can be magnetically attached to the tip of the bit; and an electric screwdriver in which said aid is used. This invention has a basic structure in which like-polarity ends of adjacent permanent magnets (21) among a plurality of permanent magnets (21) are gaplessly joined in a bundle so that a hollow through hole (13) is formed at the center, forming a petaloid cylindrical body. In a preferred embodiment, a cushioning material (22) is interposed at the end of each of the permanent magnets (21) on the side opposite from the hollow through hole (13).

Classes IPC  ?

• B25B 23/12 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens magnétiques