Thk Co., Ltd.

Taro Miyamoto

Toshiyuki Aso

Shuhei Yamanaka

Wataru Nakayama

Akihiro Unno

Hiroshi Kaneshige

Kazuya Horiike

Yukitaka Ikeya

Tadao Yoneta

Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rodhaving magnets, a plurality of coilsarranged in the axial direction of the rod, a housingcovering the coils, and a coil holderholding the coilsin the housing. The coil holderincludes a holder main bodyelongating in the coil arrangement direction and a plurality of spacer portionsmade of resin and each interposed between each adjacent two of the coilsto insulate the coilsfrom each other, the spacer portionsbeing formed integrally with the holder main body

Linear motor and method of manufacturing the same

Provided is a linear synchronous motor in which, when a three-phase alternating current passes through a coil of a mover, thrust forces generated by the alternating currents of each phase are equalized, thereby making it possible to minimize variation in thrust force, the linear synchronous motor including: a stator magnet () in which N poles and S poles are alternately arranged linearly; and a mover () which is opposed to the stator magnet () at an interval therefrom, and which generates a shifting magnetic field along with passage of a three-phase alternating current, for applying a thrust force to the stator magnet (), in which: the mover () includes a core member () in which teeth (), the number of which is a whole-number multiple of a number of phases of the alternating currents, are arranged, and a coil () which is wound around the teeth () and through which the alternating current of any one of the phases passes; and of the plurality of teeth () provided to the core member (), the teeth () corresponding to a u phase and a w phase of the alternating currents passing through the coil () wound around the teeth () at both ends of the core member () have distal ends protruding toward the stator magnet () further than distal ends of the residual teeth ().

Linear synchronous motor and linear motor actuator

By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the forcer housing depending on a purpose of use, and a linear motor can be manufactured at low cost. The linear motor includes a magnet rod composed of a large number of magnetic poles arranged with predetermined pitches along an axial direction and a forcer having a through-hole into which the magnet rod is loosely inserted and reciprocatable relatively to the magnet rod according to an applied electric signal. The forcer is composed of a forcer housing in which the through-hole is defined and a coil member which is arranged on an inner peripheral surface of the through-hole of the forcer housing and to which the electric signal is applied. The forcer housing is formed by mold forming with an insulating nonmetal inorganic material.

Rod-type linear motor

The present invention provides a drive guide apparatus capable of ensuring an increased lifetime by preventing heat generated from a primary side of a linear motor from being transferred to a rail or a moving member of a guide mechanism to which the primary side of the linear motor is connected, thereby preventing variation of rolling resistance or sliding resistance of the guide mechanism. The drive guide apparatus has a linear motor and a guide mechanism that has a rail and a moving member provided to be movable relative to the rail. A primary side of the linear motor is connected to the rail. Thermal insulators for blocking heat generated from the primary side of the linear motor are provided between the primary side and the rail of the guide mechanism to which the primary side is connected directly or indirectly.

Drive guide apparatus

The present invention provides a drive guide apparatus capable of ensuring an increased lifetime by preventing heat generated from a primary side of a linear motor from being transferred to a rail or a moving member of a guide mechanism to which the primary side of the linear motor is connected, thereby preventing variation of rolling resistance or sliding resistance of the guide mechanism. The drive guide apparatus has a linear motor and a guide mechanism that has a rail and a moving member provided to be movable relative to the rail. A primary side of the linear motor is connected to the rail. Thermal for blocking heat generated from the primary side of the linear motor are provided between the primary side and the rail of the guide mechanism to which the primary side is connected directly or indirectly.

Growing community of inventors

Tokyo, Japan

Taro Miyamoto