Hitachi Astemo Ltd.

Ryuichi Suka

Shinji Seto

Milton Muzvidziwa

A solenoid includes a stator 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 a reduced diameter portion in a direction away from the opening of the housing member. The solenoid includes a yoke with a fixation hole having an inner peripheral surface to which a part of a 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 defined on a housing member side of the fixation hole. The solenoid includes a non-magnetic connection member joined by being heated between the housing member and the yoke, and a movable element which is axially movable in the housing member and made from a magnetic body.

Solenoid, damping force adjustment mechanism, and damping force adjustable shock absorber

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.

Growing community of inventors

Hitachinaka, Japan

Ryuichi Suka