< Topic >It penetrates iron core one end of the coil bobbin into the pole hole of the case internal aspect, the flange of the coil bobbin this touches to the case internal aspect, standards combined use of the case body with magnetic generation means and improvement of magnetic efficiency it is compatible. SolutionsTo possess the magnetic generation means 3 which, are internalized in the case body 2 where it can provide the magnetic operation aspect 2a and case body 2 magnetic generation means 3, on the both ends flange the coil bobbin when one destal 7a has extended from the flange 4 of one side of 6 where the electric wire is wound in the peripheral surface of the Simultaneous Peripheral Operation On-Line section 5 which provides 4 and 4 and coil bobbin 6 to have the iron core 7 which Inlaying entrance is done inside Simultaneous Peripheral Operation On-Line section 5, one destal 7a which iron core 7 extends to make the pole hole penetrate 8 which was formed to the inside of magnetic operation surface 2a side of case body 2, at the same time, on the one hand flange 4This making the inside of magnetic operation surface 2a side of case body touch 2, it regulates the dent to internal side of the magnetic operation aspect 2a, with magnetic generation means, 3 it peters out and forms one destal 7a which iron core 7 extends in condition, forms the internal pole hole 8 of magnetic operation surface 2a side in aperture end extent condition. < Choice figure >Drawing 1【課題】コイルボビンの鉄心一端をケース体内面の磁極孔に進入させ、コイルボビンの鍔部をケース体内面に当接させて、「磁気発生手段によるケース体の支柱兼用」と「磁気効率の向上」を両立する。【解決手段】磁気作用面2aが設けられたケース体2と、ケース体2に内蔵された磁気発生手段3を有し、磁気発生手段3は、両端に鍔部4、4を設けたスプール部5の周面に電線が巻かれたコイルボビン6と、コイルボビン6の一方の鍔部4から一端部7aが突出した状態でスプール部5内に嵌入される鉄心7を備え、鉄心7の突出した一端部7aをケース体2の磁気作用面2a側の内面に形成された磁極孔8に進入させ、且つ、一方の鍔部4をケース体2の磁気作用面2a側の内面に当接させて、磁気作用面2aの内面側への凹みを、磁気発生手段3で規制し、鉄心7の突出した一端部7aを先細り状に形成し、磁気作用面2a側の内面の磁極孔8を開口末広がり状に形成している。【選択図】図1
