Kabushiki Kaisha Sankyo Seiki Seisakusho

Sankyo Seiki Mfg. Co., Ltd

Eiji Arasaki

Hiroshi Sakashita

A disk drive device includes a device stand on which a spindle motor and a device control board are fixedly mounted. The device stand has a motor mounting section which is embossed so that the spindle motor is mounted on the motor mounting section. Fastening members are inserted into the mounting holes which are formed in a stator core and the motor mounting section in such a manner that they are aligned with one another so that, with the fastening members, the circuit board is held between the motor mounting section and the stator core, and the spindle motor is fixedly mounted on the device stand. The circuit board follows the surface of the motor mounting surface being held in close contact with the latter.

Rotary element driving device

A magnetic disk drive motor includes a hub stand for driving a disk while carrying the disk thereon, a shaft fixed to the middle of the hub stand, a rotor case attached to an end of the shaft and having a drive magnet on an inner side of a circumferential wall thereof, a substantially cylindrical housing rotatably supporting the shaft through a bearing, and a base plate supporting a stator core, wherein an end of the bearing is in slidable contact with the hub stand; and at least a part of the one end surface of the bearing is cut away.

Magnetic disk drive motor

Brushless motor having terminals for connecting winding ends to circuit

An insulated magnet wire, being pushed against the arcuate guide surface of a guide member, is held in semi-circular stripping cuts formed respectively in a pair of clamping parts forming a clamp tool which are opened and closed by being turned about a fulcrum. Under this condition, the clamp tool 10 is moved along the magnet wire, to cause the semi-circular stripping cuts to strip the magnet wire.

Method of stripping an insulated magnet wire and apparatus for

Stator of rotating electric machine

An object of this invention is to provide a disk driving device which is small in the number of components, simple in structure, and low in manufacturing cost, and which can be miniaturized. In a disk driving device, a spindle motor and a head carriage section are provided in a disk cassette loading area, and the guide mechanism of the head carriage section is provided beside the spindle motor. The object of the invention has been achieved by arranging the spindle motor and the head carriage section collectively in the disk cassette loading area. Preferably, the spindle motor and the head carriage section are arranged on one and the same circuit board.

Disk drive device having a spindle motor and a head carriage section

A laminated core for a motor includes a plurality of core members made of magnetic material and which are laminated to form laminated core members; insulating layers formed on the surfaces of the laminated core members, and a wire wound on the insulating layer of the laminated core members, wherein the insulating layers are respectively formed on the core members located on the upper and lower sides of the laminated core in the laminate direction.

Laminated core for a motor

An armature core comprises a core element made of a magnetic material, wherein the core element has an annular portion. A plurality of salient poles are radially formed on the core element. A plurality of rib portions are formed on the salient poles, respectively; coils are wound around the rib portions. An insulating layer is formed on the surface of the core element. The insulating layer being provided with an area where surface of the core element excludes the insulating layer.

Armature core

An armature core wire winding method in which the armature core has salient poles set to be an integral multiple number of three, the salient poles protruded radially from an axial core portion of the armature core, the method comprises the steps of; winding three wires in two stages around three salient poles, respectively, the three salient poles being included in a first block; drawing out three transition wires from the three salient poles of the first block, respectively, in such a manner that each transition wire is drawn out at one surface side of the salient poles; extending the transition wires in such a manner that the transition wires pass over two adjoining the salient poles; winding the transition wires around salient poles of a second block, respectively, each salient pole of the second block corresponding to each salient pole of the first block; and repeating the winding, drawing out, extending and the winding steps until the transition wires completely wind around the salient poles.

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Nagano, Japan

Eiji Arasaki