Nissin Kogyo Co., Ltd.

Tomohide Tanaka

Motoyasu Nakamura

Takuro Kodama

Jun Yamashita

Naotoshi Tamai

Atsushi Shimizu

Tadashi Yamashita

A motor pump includes a base body, a pump, and a motor. The motor includes a tubular yoke having a bottom and an opening on a base body side, a bearing, a rotation shaft, a rotor, a commutator, a brush and a brush shaft. The bearing is fitted to an inside of a bearing hole of the base body. The brush holder is fitted to an inside of the yoke and engages with an outer peripheral surface of the bearing. The brush holder and the bearing are disposed so as to be spaced from the base body in an axial direction of the rotation shaft. The motor-side seal member is provided between the yoke and the base body. The base body constitutes a stopper that prevents the brush holder from being extracted from the yoke.

Motor pump

A plunger pump, includes: a plunger pump unit including a pump chamber and a plunger for pressing a hydraulic fluid in the pump chamber to perform a discharging operation of the hydraulic fluid; a motor; and a cam portion driven by the motor to rotate and press the plunger. The cam portion has at least two discharge regions for pressing the plunger and a suction region formed between the discharge region. The plunger performs the discharging operation two times or more by one rotation of the cam portion.

Plunger pump

A rotor is provided so that a rotor-side end part of a rotation shaft is rotatably supported by a bearing accommodated in a bearing accommodating part provided in a bottom part of a yoke in such a way as to project to a rotor side, and a part of an armature winding wound around a core surrounds the bearing accommodating part through an insulator.

Growing community of inventors

Ueda, Japan

Tomohide Tanaka