To provide a connection structure for a nut, an internal cylinder, and a stopper in a linear actuator which doesn't require screw processing on an outer surface of an internal cylinder, simultaneous processing of a hole of a spring pin for connecting the nut, internal cylinder and stopper, also a stop nut, and nor welding of the stopper into the internal cylinder.
A hexagon socket head cap screw 32 is threadly engaged with a screw hole 25C of a trapezoidal screw nut 25 so as to connect the trapezoidal screw nut 25, an internal cylinder 27, and a stopper 28 in such a position that an outer surface of the internal cylinder 27 is engaged to a center hole 28A of the stopper 28, a female screw 27A of the internal cylinder 27 is threadly engaged with a male screw 25A of the trapezoidal screw nut 25, a shoulder bolt insertion hole 28B of the stopper 28, a bolt insertion hole 27B of the internal cylinder 27, and the screw hole 25C of the trapezoidal screw nut 25 are matched and an end face of the stopper 28 is abutted to a shoulder part 25A of the trapezoidal screw nut 25.
ITO SHIGERU
MAEJIMA KATSUMI
