Hitachi, Ltd.

Nobuhiko Ogasawara

Hisanobu Kanamaru

Tosio Tomite

Kaniti Isii

Shotaro Naito

Yasuaki Watanabe

Hideo Tatsumi

Akira Tohkairin

Hidemitsu Kobayashi

Kazuhiro Tsuruoka

Tatsuhiro Tani

Masayuki Shizuka

Teruhisa Honshima

Akira Takahachi

Tadayochi Samata

An armature for an electric rotary machine, comprising a laminated iron core including a plurality of slots, and teeth, alternately disposed in the cylindrical surface of the iron core, windings placed in said slots, and anchors for preventing the windings placed in the slots from being displaced, wherein the anchors are formed by deforming the end portions of the teeth, while forming before mounting the windings into the slots, a through hole extending through the end portion of each tooth.

Armature for an electric rotary machine and method of manufacturing the

A plurality of permanent magnets (4) are disposed with gaps between adjacent magnets along the inner peripheral surface of a yoke (2) of a stator for a magneto D.C. motor. In gaps between magnets, there are provided retainers (3), ech of which is made of an elastic member and consists of one surface (11) fixed on the yoke, two surfaces (12, 13) extending in the central axial direction of the D.C. motor along the side facing surfaces (71, 72) of the magnets opposite to each other on the inner peripheral surface of the yoke and two end portions (32) connecting these two surfaces (12, 13). Those two surfaces (12, 13) and end portions (32) are kept in contact with the permanent magnet from three directions, namely from both facing surfaces (71, 72) of the permanent magnet and from each of the outer surfaces (81, 82) of the magnets adjacent to each facing surface (71, 72) extending in the central axial direction, whereby the permanent magnets are pressed and clamped so as to be secured to the yoke.

Magneto D.C. motor having elastic magnet mounting retainers

A magneto device for generating signals comprises a rotor including a permanent magnet and a pole piece which are secured to a rotary body, and a stator including a stationary pole piece and a signal output coil. Formed in the outer periphery of the rotary body is a recess in which the permanent magnet and the pole piece are inserted in this order. A cylindrical key member made of a non-magnetic metal is inserted in an annular space between the wall of the recess and the permanent magnet and pole piece. The key member is plastically deformed by pressing to secure the permanent magnet and pole piece to the rotary body.

Magneto device for generating signals

In a fixed field inductor-type generator having an annular stator core on which an armature coil is wound and a field coil which is disposed stationary in said stator core, the field coil is located in space defined by a pair of rotatable pawl-like magnetic poles that are opposed to each other and are supported by a rotary shaft. The field coil is held by a holding member made of a nonmagnetic metal, and is secured to the stator core. The field coil-holding member has fixed collars, which fastened to the inner peripheral surface of the stator core via a plastically deformable metallic coupling member. The field coil is wound on a curved spring steel plate and receives the expanding force at all times from the inner peripheral side thereof. The field coil is contained in the field coil-holding member and is firmly supported by an adhesive that is charged thereinto.

Fixed field inductor-type generator

Method for producing a magneto device for generating signals

A joining construction between a flywheel of a flywheel magneto and a boss for mounting thereon a shaft comprises a joining portion formed on the periphery of the boss, and a joining portion of the flywheel surrounding the periphery of the boss. The joining portion of boss has an annular groove defined by a rugged bottom and both sides one of which is inclined along metal flow. The joining portion of the flywheel has the same shaped groove as one of the boss. Two the joining portions define an annular gap in which a joining member is disposed deformed by pressworking. The joining member inserted into the annular gap has the same shearing strength as the flywheel when an axial force is applied to the flywheel magneto.

Flywheel magneto rotor and manufacture method thereof

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Mito, Japan

Nobuhiko Ogasawara