| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electric actuator and an electric bed, which are compact and yet improve output power efficiency. <P>SOLUTION: The electric actuator 3 includes an electric motor 18, a first speed-reducing mechanism 19 connected to a rotating shaft 29 of the electric motor 18, and a second speed-reducing mechanism 20 which transmits a torque of the rotating shaft 29 obtained via the first speed-reducing mechanism 19, to a bed body. A planetary carrier 65 disposed on the first speed-reducing mechanism 19 and an output shaft 22 disposed on the second speed-reducing mechanism 20 are set coaxial with the rotating shaft 29 of the electric motor 18. Between the first speed-reducing mechanism 19 and the second speed-reducing mechanism 20, a brake mechanism 21 is disposed to prevent the reverse rotation of the planetary carrier 65, output shaft 22, and rotating shaft 29 by an external force. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
