Provided is a connecting structure for a vacuum pump, which can block propagation
of electrical noise, generated by a main body of the vacuum pump. Between both
ends of a connection piping for connecting the vacuum pump to a vacuum chamber
of an apparatus to be connected with and evacuated by the vacuum pump, there is
interposedly provided an electrical insulating portion formed of an insulating
material so as to provide electrical insulation therebetween. The electrical insulation
portion may be provided to a connection piping member such as a damper (or a valve
depending on the connection arrangement) for absorbing mechanical vibrations.
