Sensor rotating apparatus

A sensor rotating apparatus comprising:

• drive means for generating a rotational output power;
• first and second reduction gear assemblies for reducing the rotational output power of said drive means, said first and second gear assemblies cooperating with said drive means and having a predetermined gear ratio;
• a sensor turntable for causing, using the reduced rotational output power of said drive means, a sensor to rotate, said sensor turntable carrying said sensor at a predetermined position thereon and rotating at a predetermined rotating velocity which is determined in accordance with said gear ratio of the first and second reduction gear assemblies;
• a casing having a hub for rotatably supporting said sensor turntable;
• a housing holder extending downwardly from said casing in order to be oppositely arranged to said hub;
• a rotating shaft for rotating at a same time of rotation of said sensor turntable and transmitting a sensing signal of said sensor to a control circuit unit, said rotating shaft being inserted in both said hub and said housing holder and having a pair of longitudinal grooves for receiving a pair of input terminals for transmitting said sensing signal of the sensor and being fixed to said sensor turntable using a first fixing member in order to rotate at the same time of rotation of said sensor turntable;
• a bearing assembly for supporting said rotating shaft, said bearing assembly being electrically connected to said pair of input terminals of the rotating shaft and being arranged so as to surround said rotating shaft;
• and
• support means for preventing said bearing assembly from undesirable separation from said rotating shaft due to the rotational force of said rotating shaft, said support means being mounted on a lower end of said rotating shaft using a second fixing member.