Patent ID: 8344837
Filing Date: 2013-01-01
Classification: H01F,H01H

Abstract:
1. A solenoid apparatus, comprising: a bobbin which includes a cylindrical winding drum part, and in which flange parts are respectively formed on the both ends in the axial direction of the winding drum part; an exciting coil which is formed by winding a line member around the bobbin; and first and second cylindrical holding parts which extend in the axial direction from one of the flange parts formed on one end side of the winding drum part and are formed in cylindrical shapes, and which respectively holds line end portions of the side of the start of winding and the side of the end of winding of the exciting coil, wherein the first cylindrical holding part has a first opening part which opens in part of the outer periphery of the first cylindrical holding part over the entire length of the first cylindrical holding part in the axial direction thereof to accommodate one of the line end portions which is the side of the start of winding of the exciting coil, and the opening direction faces one side in a direction along a circumference of the flange part, the second cylindrical holding part has a second opening part which opens in part of the outer periphery of the second cylindrical holding part over the entire length of the second cylindrical holding part in the axial direction thereof to accommodate the other of the line end portions which is the side of the end of winding of the exciting coil, and the opening direction faces the other side in the direction along a circumference of the flange part, one of the flange parts is provided with a first notch portion and a second notch portion, the first notch portion communicating with the first cylindrical holding part and opening in the opening direction of the first opening part and to the outer periphery edge of the flange part, and the second notch portion communicating with the second cylindrical holding part and opening in the opening direction of the second opening part and to the outer periphery edge of the flange part, and in the exciting coil, the one of the line end portions is held by the first cylindrical holding part, and is bent immediately after the one of the line end portions is pulled from the first notch portion to the inside of the flange part, the line member is wound around the winding drum part toward the other side in the circumferential direction which is opposed to the opening direction of the first opening part and is wound a predetermined number of turns, and thereafter, the other of the line end portions is bent in the axial direction immediately in front of the second notch portion and is pulled out from the second notch portion to the outside of the flange part, and is then held by the second cylindrical holding part.