Kabushiki Kaisha Moric

Yamaha Motor Electronics

Kabishiki Kaisha Moric

Hideaki Takahashi

Tadashi Takano

Susumu Ando

Hisanobu Higashi

Takashi Yamada

Susumu Andou

Hiroaki Kondou

Koichi Sano

An improved armature construction in which a coil winding wiring board and cooperating insulator around which the coils are wound at least in part wherein the insulator and wiring board are interconnected by an attachment arrangement that automatically positions and retained components in the desired circumferential, axial and radial positions.

Armature of rotary electrical device

A number of embodiments of rotating electrical machines using permanent magnets wherein the cogging torque is substantially reduced as are vibrations caused by magnetic flux variations. This is accomplished by disposing the coil windings in equal circumferential spacing and disposing the associated permanent magnets in non-symmetrical relationship so that the gaps between some of the magnets are different. In addition, the coil windings are such that no two coils of any phase are immediately adjacent each other in a circumferential direction. A method for calculating the optimum spacing is also disclosed.

Permanent magnet type rotor and permanent magnet type rotary electrical machine

An electrical armature having a wiring board embodying conductive plates with wire end receiving terminals to receive and hold the wire ends of the coils while they are fused to the terminals.

Terminal for armature

Several embodiments of rotating electrical machines where cogging torque is reduced as well as the distortion of the back emf and improve torque characteristic with reduced torque ripples by dividing either the permanent magnets and/or the poles of the coil windings in axially separated portions that are circumferentially shifted relative to each other.

Magnetic field type of rotary electric apparatus

Two embodiments of rotating electrical machines wherein the cogging torque is substantially reduced by increasing the cogging number without increasing the number of pole teeth and permanent magnets. This is done by selecting the appropriate magnet angle to increase the number of coggings per revolution and this can be done using a computer analysis of the cogging torque for the individual magnets rather than by a trial and error method.

Permanent magnet type rotary electric device

An improved armature winding arrangement for a rotating electrical machine such as a specifically illustrated DC motor for driving a vehicle wheel. The assembly is such that the armature core can be formed from two laminated pieces that are rigidly connected to each other and held against axial movement. This eliminates the need for bonding adhesive. In addition, an improved bobbin arrangement is employed for both permitting attachment of a wiring plate directly to the core but also for retaining the ends of the individual windings to prevent them from becoming loose either during assembly or in operation.

Growing community of inventors

Shuuchi-gun, Japan

Hideaki Takahashi