Nakanishi Inc.

Akito Nakamura

Hayato Matsushita

Shinichiro Muto

Provided are an electric motor that enables to achieve downsizing while securing performance, and a dental device that includes the electric motor. A brushless slotless electric motorincludes: a statorthat includes a stator coreand a plurality of coilsto, the plurality of coilstobeing disposed at an inside of the stator core; and a rotorthat includes a shaftand a magnet, the rotorbeing rotated around the shaftwith respect to the stator. The plurality of coilstoare adjacent to each other in a rotation direction of the rotorso as not to lap mutually. Lf&#x3c;Lc is satisfied where Lf is a length of the stator corein an axial direction and Lc is a length of the coil in the axial direction.

Electric motor and dental device

An electric motor that enables to promote a further downsizing and performance enhancement, and a dental device that includes the electric motor. A brushless slotless electric motorincludes: a statorthat includes a stator coreand a plurality of coilstodisposed inside of the stator core; a rotorthat includes a shaft, the rotorbeing rotated around the shaftwith respect to the stator; and a medium pathwaythrough which a medium passes, the medium being supplied for actualizing a function of a dental handpieceA to which the electric motoris applied. The plurality of coilstoare adjacent to each other in a rotation direction of the rotorso as not to lap mutually. The medium pathwayis disposed between the adjacent coilsto

A drive motor of a dental handpiece for driving a cutting tool of the handpiece is provided that is connected to the dental handpiece on its front end side and includes a cylindrical casing; a rotor unit, which is rotatably supported inside the casing and outputs a driving force; a stator unit provided around the rotor unit inside the casing; and an air path which causes cooling air supplied from the rear end side of the drive motor to pass through an airtight cooling room circumferentially extending between the stator unit and the casing, and to be discharged from the rear end side.

Growing community of inventors

Tochigi, Japan

Akito Nakamura