Aisin Seiki Kabushiki Kaisha

Denso Corporation

Masao Suzuki

Yoshimichi Hara

Takao Tsunooka

Hiroyuki Takagi

Shinichiro Hazama

Shinichi Shimono

Tokunari Nakamoto

Yoshihito Kondoh

A DC brush motor includes an armature fixed to a shaft for unitary rotation with the shaft. The shaft is rotatably supported with respect to a case by way of a pair of bearings. The armature is made up of a core, a coil winding, and a resin-made supporting member for supporting the core with the core rotating together with the shaft. The supporting member has a concave or recessed portion for receiving a boss of the case. Several commutator segments forming a commutator are arranged along the inner periphery of the recessed portion. A brush is held in a brush holder and is biased outwardly by the biasing force of a coil spring to contact a brush contact portion of the brush.

DC brush motor

An armature core includes a central circular portion and a plurality of equi-spaced extensions extending from the central circular portion outwardly in the radial direction. The extensions and the central circular portions are in the form of an integral configuration and are formed by hot pressing magnetic metal powder particles, each of which is covered by an insulating material.

Armature core and brush-equipped DC motor using the same

The invention is directed to an electromagnetic valve unit, which includes a housing for defining therein a first chamber and a second chamber separated by a wall member having at least a communication hole, and a plurality of electromagnetic valves each having at least a terminal. At least a part of each electromagnetic valve is mounted in the first chamber. A circuit board for mounting thereon an electronic control element for controlling the electromagnetic valves is mounted in the second chamber. The valve unit further includes a conductive member, one end portion of which is connected with each terminal of the electromagnetic valves, and the other end portion of which is connected with the circuit board through the communication hole of the wall member. And, a seal member such as a resilient grommet is provided for holding the conductive member in the communication hole of the wall member to provide a seal therebetween. Each of the electromagnetic valves may be provided with a valve portion and a solenoid coil portion which is separable from the valve portion and which has the terminal connected with the conductive member.

Electromagnetic valve unit

Growing community of inventors

Owariasahi, Japan

Masao Suzuki