Matsushita Electric Industrial Co., Ltd.

Tomiaki Sakano

Fumitoshi Yamashita

Shigeru Kajiwara

Katsuhiro Murano

Hiromichi Yamamoto

Yukinobu Sakaguchi

Masahiro Sashino

Junichi Hirata

Masaaki Matsubara

Tomoko Nishimura

A rotor of a motor has a cylindrical magnet coaxially disposed with a shaft. The shaft and the magnet are bonded with thermosetting resin formed by injection molding. Since the molding shrinkage of the thermosetting resin is so small that a high preciseness is achieved in the motor structure. This precision structure can reduce vibration due to unbalance of a rotor. Also, an annealing process, in which a motor is left at a temperature higher than the limit temperature for operating the motor, can be eliminated. As a result, the efficiency of producing the motor can be improved.

Motor having rotor formed by using thermosetting resin

The present invention discloses the construction and manufacturing method of a turning mirror which has a single face or multiple face reflector mirror for scanning laser light in a laser beam printer and the like. The disclosed construction and manufacturing method achieve a low-cost and high-accuracy turning mirror. Photo-setting resin is coated onto the surface of a base mount having a rotating shaft at its center. The surface of the base serves as a substrate for reflector mirror. A glass plate having a good flatness is placed into contact with the resin coating layer. Resin setting light is operated to irradiate the resin coating layer with the peripheral side fringe of the resin coating layer partially or entirely open in order to set the resin coating layer. The glass plate is then separated from the resin coating layer, allowing the flatness of the glass plate to be transferred to the resin coating layer. The turning mirror is then fabricated by attaching a metallic film onto the resin coating layer.

Turning mirror and method of manufacture

This disclosure is directed to a friction material which includes a porous material and capsules containing a hydrophobic substance in a liquid form. The porous material and capsules are formed into a composite structure by a binding agent so as to use the hydrophobic substance contained in the capsules for a component of a lubricating layer to be formed on the friction material upon breakage of the capsules.

Friction material

An armature of double insulation construction for commutator motors of the wound-rotor type and a method of making the armature. An insulator insulating an iron core from a shaft and windings from the iron core also insulates a commutator from the shaft and unites the shaft, iron core and commutator into an integral rigid body. The armature can be fabricated with high precision by a simplified method.

Method of making armature of double insulation construction

The present invention is a stator terminal construction for use in a rotary electrical machine such as an electric motor. The coil element of the stator coil is inserted in an iron core and a coil end of the coil element extends outwardly from a corresponding end of the core. This coil end has coil winding ends extending out of it and connected to lead wires for an external power source. The terminal structure is constituted by a block of moldable resin positioned directly on the coil end having the connections between the coil winding ends and the lead wires embedded therein. The terminal structure thus serves to insulate and fix the connections between the coil winding ends and the lead wires.

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Hirakata, Japan

Tomiaki Sakano