Kabushiki Kaisha Yaskawa Denki

Other

Haruki Yahara

Toru Shikayama

Shogo Makino

Motomichi Ohto

Masayuki Hirayama

Masanobu Kakihara

Mitsuhiro Matsuzaki

Shinichi Nishi

Makoto Matsumoto

Mitsunori Kamo

Mitsuhiro Koga

Sohji Murakami

Souji Murakami

Tsuyoshi Nonaka

This disclosure discloses a linear motor including a stator, a mover, and a plurality of teeth. The stator includes a stator curved part having an arc shape in a longitudinal direction. The mover is arranged facing the stator and is moved in the longitudinal direction of the stator. The plurality of teeth are arranged in parallel along the longitudinal direction so that a pitch of the teeth at an outer-peripheral side is larger than the pitch of the teeth at an inner-peripheral side on the stator curved part.

Linear motor and linear motor manufacturing method

A coil includes a wound body and a resin covering. The wound body is configured by winding a conductor. The wound body is pressure-molded. The resin covering covers a surface of the wound body.

Coil, rotating electrical machine, and method of manufacturing coil

A rotating electrical machine includes a rotor core, a stator core, and at least one permanent magnet. The rotor core has an inner circumference portion and an outer circumference portion. The stator core is opposed to the outer circumference portion of the rotor core. The at least one permanent magnet radially extends inside the rotor core. The at least one permanent magnet has an incremental circumferential width in a direction from the inner circumference portion to the outer circumference portion of the rotor core.

Rotating electrical machine

An actuator according to an embodiment includes support mechanisms that are disposed in plural places of an output shaft in a longitudinal direction and support the output shaft in a linear direction and a rotation direction, a motor portion that is disposed in a longitudinal direction of the output shaft and drives the output shaft in the linear direction and the rotation direction, a first detecting portion that detects an angle of a rotation direction of the output shaft, and a second detecting portion that detects displacement of the direct direction of the output shaft.

Actuator

This invention provides a rotating electrical machine including a rotor that has an even number of first permanent magnets aligned in a circumferential direction of the rotor, second permanent magnets of a number equal to that of the first permanent magnets, provided respectively between the stator and circumferential ends of the first permanent magnets adjacent to each other in the circumferential direction, and core pieces of a number equal to that of the first permanent magnets, provided respectively between the second permanent magnets adjacent to each other in the circumferential direction.

A voice coil type linear motor with a cooling function. A closed magnetic circuit formed into the &#x3b8;-shape, by an inner yoke provided between a pair of outer yokes made up of magnetic materials arranged in parallel with a longitudinal center axis in such a manner as to be in parallel with the pair of outer yokes. The outer yokes and side yokes are provided at both end portions of the inner yoke. Permanent magnets are provided on inner sides of the outer yokes and on outer sides of the inner yoke with polarities thereof which face opposite surfaces of the outer yoke. The inner yoke is made opposite to each other or with polarities thereof which face only the outer yokes being made opposite each other to thereby a field. An armature made up of a bobbin of non-magnetic and insulating materials is provided. A coil is provided around the bobbin between the permanent magnets via air gaps in such a manner as to move in an axial direction or in such a manner that. The coil is wound around the bobbin. A case is constructed on an exterior of the bobbin. A coil portion is made watertight. A fluid supply port and a fluid discharge port are provided on the bobbin or the case. A cooling fluid is caused to flow between the coil and the case so that the coil is cooled directly.

Growing community of inventors

Kitakyushu, Japan

Haruki Yahara