Air rifle - has battery-powered electric motor with gearbox, compressor and electronic circuitry held by in-line housing below barrel

摘要

The air rifle has a continuously rotating or reciprocating compressor (20), driven by an electric motor (24), to provide the compressed air for propulsion of the bullet. Between the motor and the compressor is a gearbox (22). The motor is a DC motor and is supplied from a battery (28). The motor (24), compressor (20), gearbox (22), battery (28) and control electronics (26) are all in line and mounted in a housing below the barrel. The battery is held in a quick-change adaptor. There is a pressure sensor (30) which switches off the motor when the required propulsion pressure is reached. The motor is switched on by a trigger (18) contact with a delay circuit. ADVANTAGE - Simple low-loss design.