Mitsuba Electric Manufacturing Co., Ltd.

Takao Umezawa

Takao Ochiai

Masaki Mita

Noboru Miyata

Yoichi Inoue

Takashi Momiyama

Keiichi Bendo

Eita Kobayashi

Yasuyoshi Nakajima

A structure for a terminal section of a motor having a plurality of terminals juxtaposed with each other and extending in the axial direction of the motor shaft. The plurality of terminals are inserted into an end case covering the yoke opening, and have lead connecting portions at the distal ends thereof, which are exposed to the outside of the end case and to which a plurality of leads are individually connected. The lead connecting portions are exposed in a stepped manner, that is, they are subsequently shifted from each other both in the direction around and in the direction along the motor shaft. The leads are connected to the exposed lead connecting portions from directions substantially perpendicular to the motor shaft. The structure is capable of ensuring a sufficient insulating distance and reducing the motor size without lowering operational efficiency during production and without increasing the number of sealing locations.

Structure for terminal section of motor

Disclosed are a motor casing made of a resin and a method of manufacturing such a motor casing. A bearing for rotatably supporting a core shaft of a rotor core is inserted into a bearing seat portion of the motor casing when the temperature of the resin material which forms the bearing seat portion is substantially at the glass transition temperature thereof or above, the resin material being cooled to a room temperature.

Motor casing made of resin

Method of manufacturing a motor casing made of resin

A motor case end plate structure, comprising: a motor case accommodating a motor unit therein and provided with a first radial bearing for a rotor shaft of the motor unit; a radial flange provided at an open end of the motor case; and an end plate, made of molded synthetic resin, having a second radial bearing for the rotor shaft and adapted to be attached to the motor case by way of the flange; the end plate being provided with at least three separate peripheral mounting surfaces disposed around the rotor shaft and projecting from surrounding parts so as to substantially directly abut an outer end surface of the flange of the motor case. Thereby, any error in the planeness of the mounting surfaces or any error in their perpendicularity with respect to the axial line of the motor unit can be readily corrected by shaping the part of the die for molding the end plate corresponding to the mounting surface to be corrected without requiring excessive cost or time. Thus, an exact alignment between the motor case and the end plate can be accomplished in an economical fashion.

Motor case end plate structure

A method of integrally molding a member to be molded onto a portion of a rigid member, which method is applied to manufacture of a connecting rod used in a crank device of a wiper system in a motor vehicle, for example. In this method of molding, a portion to be positioned is formed in the rigid member, a portion of the rigid member is inserted into a cavity for molding the member to be molded in such a manner that the portion to be positioned is exposed in the cavity, positioning members linearly movably provided in this cavity are engaged with this portion to be positioned to effect positioning, the positioning members are retracted to the outside of the portion to be positioned after the positioning, and thereafter, a molding material is poured into the cavity to mold the member to be molded. The rigid member has a mounting hole integrally molded therein with the resinous member to be molded, slits are provided on the inner peripheral surface of the member to be molded, and the mounting hole formed such that the inner diameters of portions of the mounting hole as opposed to said slits are decreased.

Growing community of inventors

Seta, Japan

Takao Umezawa