Patent ID: 7129606

Claim:
A vacuuming motor, for being attached to a peripheral edge of a motor attaching hole of a vacuum chamber and operable to be used as a drive apparatus of a board transporting robot in the vacuum chamber, comprising: a reduction gear main body attached to an end portion on a load side of a motor main body, including an attaching flange fixed to the motor attaching hole to interpose an O-ring there between; and vacuum seals fixed to the attaching flange, made of resin, contacting slidably with an output shaft of a reduction gear, for partitioning an inner space of the reduction gear main body and the motor main body and an inner space of the vacuum chamber, wherein the motor main body and the reduction gear main body are arranged in an atmosphere outside of the vacuum chamber wherein the vacuum seals further comprise a first vacuum seal and a second vacuum, seal, the first and the second vacuum seals define an inner space for being vacuumed, the first vacuum seal partitions the inner space of the reduction gear main body and the inner space between the first and the second vacuum seals for being vacuumed, and the second vacuum seal partitions the inner space between the first and the second vacuum seals for being vacuumed and the inner space of the vacuum chamber.