JP2005299906A5 - - Google Patents

Claims (4)

In a valve actuator comprising a base body, an electric motor disposed on the base body, and a speed reduction mechanism that decelerates and transmits the rotational force from the electric motor to the output shaft, electric wires of electric parts such as the electric motor, A terminal block for electrically connecting an electric wire such as an external power source is mounted on the module board, and the module board is provided in a terminal box disposed on the lower surface of the base body so as to be freely inserted in a horizontal direction, and A valve actuator characterized by being positioned simultaneously with insertion . The terminal box body covered with the lid body has two openings that engage the guide holes formed on both edges of the module board so that the module board can be slidably guided and fixed to the module board. The valve actuator according to claim 1 , further comprising a substrate fixing screw . The insertion side end of the guide hole formed in the module substrate has a screw hole having a diameter larger than the head diameter of the substrate fixing screw, and when the substrate fixing screw is positioned in this screw hole, The module board can be attached and detached, and the module board inserted in the horizontal direction is positioned and fixed by the protrusion formed on the inner surface of the terminal box body and the two board fixing screws. The valve actuator according to claim 1 or 2 . The valve actuator according to any one of claims 1 to 3 , wherein an insulating plate for preventing a short circuit between the terminal box body and the terminal block is detachably provided at an appropriate location of the terminal box body .