Sanyo Electric Co., Ltd.

Hiroaki Sagara

Kenji Taguchi

Takashi Uchino

Tetsuji Ueta

Takeshi Nagao

Toshihiro Matsumoto

Yoshihiko Maeda

Toshihiro Suhara

Tatsuaki Tanaka

Yukifumi Yamaguchi

Masaru Tanaka

Keiji Kishimoto

Masakatsu Fujiwara

Kazuhiro Tomoshige

Tatsuki Tanaka

A molded motor includes a ring-shaped stator and a rotor disposed inside the stator. The stator has teeth, insulators surrounding the teeth, coils wound around the insulators, and a molded part molding the teeth, insulators and coils. The insulators are partially exposed from the molded part.

Molded motor and electric vehicle

An electric motor includes: a stator of columnar shape including a stator core of annular shape and mold resin molding the stator core, the stator core accommodating a rotor configured to rotate about a rotary shaft; and a position detecting circuit board including a position detecting element configured to detect a position of the rotor. The stator has a cavity for accommodating the rotor. One end of the cavity is covered by the mold resin. The position detecting circuit board is placed on an opposite side from the rotor across the mold resin covering the one end of the cavity.

Electric motor and electric motor vehicle

An electric motor includes: a stator of columnar shape including a stator core of annular shape and mold resin molding the stator core, the stator core accommodating a rotor configured to rotate about a rotary shaft; and a temperature detecting element buried in the mold resin. The stator core includes a plurality of stator teeth around which a coil wounded around respectively. The temperature detecting element is buried in the mold resin from any one of the pair of end surfaces at a position between two adjacent stator teeth.

An electric motor comprising an annular stator core, a resin molding the stator core, a casing member housing the stator core, wherein the casing member has an opening, and the resin is filled into the opening.

Electric motor having an encapsulated stator for a vehicle braking device

A stator includes multiple motor coils. The motor coils include multiple U-phase coils, multiple V-phase coils and multiple W-phase coils which are arranged in a circumferential direction of a motor. A neutral bus ring connects the motor coils together. The neutral bus ring is divided into multiple bus ring members. Each bus ring member connects together any one of the U-phase coils, any one of the V-phase coils and any one of the W-phase coils.

Motor with neutral bus ring connecting multiple motor coils

A molded motor includes an annular stator formed by molding coils in resin, a rotor disposed in an internal space which is formed radially inside the stator, a cover covering the internal space, and an elastic member sandwiched between the cover and the stator and located at a more inner side in the radial direction of the stator from the coils.

An aspect of the invention provides a motor that comprises: a stator including multiple motor coils; multiple bus rings configured to distribute currents of different phases to the motor coils; and a ring-shaped bus ring holder in which multiple holding grooves configured to hold the respective bus rings are formed, wherein: each of the motor coils includes an insulator around which a wound wire is wound; the insulator includes an outer flange formed at an outer side of the wound wire in a radial direction of the motor and extending in an axial direction of the motor; and the bus ring holder is arranged at an outer side of the outer flange in the radial direction of the motor, and contiguous to the outer flange.

Motor with multiple bus rings

Included are a rotor, and a stator having a yoke section and a teeth section including multiple teeth. The teeth section and the yoke section are made of mutually independent configuration members, and connected to each other. At least one of the teeth section and the yoke section is formed by connecting each neighboring two of its multiple segments arranged one after another in a direction in which the rotor rotates. At least some neighboring teeth out of the multiple teeth are unified.

Motor including a teeth section and a yoke section which are formed of mutually independent configuration members

An electrically assisted vehicle includes a vehicle body having a driving wheel driven by human driving power and electric driving power, a driving power applying section for applying the human driving power to drive the driving wheel, a torque detection section to detect the human driving power applied to the driving power applying section, a motor to auxiliarily drive the driving wheel by the electric driving power, a battery to supply power for the motor, and a control section to control the motor according to a result detected by the torque detection section, wherein the control section has a plurality of switchable assist modes relating to an assist ratio of the electric driving power to the human driving power.

Electrically assisted vehicle

A torque limiting device for motors in electrically driven vehicles includes a control device for controlling an electric driving power supplied to a motor in an electrically driven vehicle; a detecting section for detecting a driven state of the motor and outputting an output signal of the motor; and an upper electric driving power limit setting device in which a plurality of restricting values corresponding to the output signal from the detecting section are previously set, wherein the upper electric driving power limit setting device gives a command to the control device to restrict an upper limit of the driving power on the basis of one of the plurality of restricting values when the output signal is outputted, thereby limiting a torque of the motor.

Torque limiting device for motors in electically driven vehicles and

A magnet motor stator where a magnet of a pole of a stator includes multiple magnets. Each magnet can be flat and made from rare-earth materials. It is thus possible to manufacture these magnet motor stators at a lower cost accompanied by a reduction in size and weight for the magnet motor.

Magnet motor stator

An electrically assisted vehicle includes a vehicle main body having a driving wheel, a human drive system having a driving force applying part to which a human driving force for driving the driving wheel is applied and a torque detecting part for detecting the human driving force applied to the driving force applying part, and an electric drive system having a motor, a control part for controlling the motor and a battery for power supply, wherein the motor has an electric driving force characteristic such that it outputs the electric driving force only at speeds lower than a predetermined speed, and the control part of the electric drive system controls the motor with a predetermined ratio on the basis of detection results from the torque detecting part of the human drive systems thereby executing power assistance control while maintaining the assist ratio to be less than a predetermined value without providing a speed sensor for carrying out control based on the speed.

Growing community of inventors

Kasai, Japan

Hiroaki Sagara