Toyota Jidosha Kogyo Kabushiki Kaisha

Satoshi Ohtawa

Teru Morishita

Toshikazu Suzuki

Yoshimichi Ishioka

A rotary type electrostatic spray painting device comprising a rotary shaft and a spray cup-shaped head fixed onto the front end of the rotary shaft. Paint is fed onto a cup-shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air bearing, a pair of radial air bearings, and a non-contact type rotary shaft supporting device having a permanent magnet. The permanent magnet is arranged near a circumferential outer wall of a hollow portion of the rotary shaft for supporting the rotary shaft by the attracting force of the permanent magnet. An electrode, continuously contacting the rear end of the rotary shaft, is provided. A negative high voltage is applied to the housing of the paint device. In addition, the negative high voltage is also applied to the spray head via the electrode and the rotary shaft.

Growing community of inventors

Mishima, Japan

Satoshi Ohtawa