Abstract: A solenoid comprises a mold coil, a housing, a yoke, an anchor, a cylinder, and an armature. The housing and the yoke are connected together with the cylinder intervening therebetween. The housing includes an accommodating tube portion including a first end portion, a second end portion, and a third end portion. The first end portion faces the anchor. The second end portion is axially recessed back from the first end portion and includes an abutting portion that abuts against the other axial end of the cylinder. The third end portion is axially recessed further back from the first end portion than the second end portion and accommodates solder (copper ring) for sealing space between the third end portion and the cylinder.

Abstract: A housing (36) of a solenoid (33) is configured by including an accommodating tube portion (36A) extending in a winding axis direction of a coil (34A) and being open at one end. An anchor (41) is provided at such a position as to face the opening of the accommodating tube portion of the housing and includes a protruding portion (41) and a lateral face portion (41D) which are formed in an integral manner. A yoke (39) includes a fixing hole (39A). The fixing hole includes an inner peripheral face facing a part of the lateral face portion of the anchor. A cylinder (44) is joined to an inner periphery of the yoke at an outer periphery on one side in the winding axis direction of the coil and joined to an outer periphery of the housing at an inner periphery on the other side.

Abstract: The present invention aims to provide a valve driving device that suppresses an increase in size and improves thrust. The present invention includes a bobbin including a body portion, a solenoid coil wound around the body portion of the bobbin, an armature arranged on a radially inner side of the bobbin and fixed to a rod, an anchor that covers one side in an axial direction of the armature at a position on the radially inner side of the bobbin, a yoke partially arranged between the bobbin and the anchor, and a cylindrical member arranged between the bobbin and the armature. The bobbin includes a recessed portion on the radially inner side, and a part of the cylindrical member is inserted into the recessed portion. A part of the cylindrical member and the recessed portion are arranged so as to be laminated in the radial direction.

Abstract: A stator provided at a position facing an opening of a housing member. The stator includes a conical protrusion portion and a side surface made from a magnetic body. The side surface extends from an outer periphery of the reduced diameter portion in a direction away from the opening of the housing member. Also included is a yoke with a fixation hole having an inner peripheral surface to which a part of the side surface portion of the stator is fixed. A non-contact portion, where the yoke and the side surface portion are out of contact with each other, is formed on the housing member side of the fixation hole. Also included is a non-magnetic connection member joined by being heated between the housing member and the yoke, and a movable element provided axially movably in the housing member and made from a magnetic body.