A magnetic attracting piece 1 is formed by punching out sheets and composed with a studier end 1d; a yoke 1b is formed by bending the end 1d at a right angle with a cylindrical surface 72a on which a sensor 71 is fixed, and a magnet 1a fixed to the yoke 1b. 板状材料を打抜いて直線状に形成された端部1dを有しセンサ71を固定しようとする円筒面72aと垂直になるように該端部1dを折曲げて作製したヨーク1bと、該ヨークに固定した磁石1aとを備えた磁石吸着具1。 - 特許庁