Power-supply unit having connector of variable orientations

Claim 1

A power-supply unit for a solenoid valve assembly comprising: a base to be mounted on a first end of said solenoid valve assembly including a plurality of solenoid valves arranged in a row; a connector frame to be fitted on said base; and a multielectrode connector mounted on said connector frame and electrically connected to each solenoid valve of said plurality of solenoid valves of said solenoid valve assembly for supplying power, wherein said connector frame is rotatably supported on said base so that a position of said multielectrode connector is switchable between an upright position and a horizontal position; and an engaging locking means for releasably locking said connector frame in either one of said upright position and said horizontal position, said engaging locking means being provided between said connector frame and said base, wherein said engaging locking means includes: a pivot of circular cross section for rotatably supporting said connector frame on said base, a square pivot member attached to said pivot of circular cross section, wherein a part of said square pivot member is formed in a square shape, and a locking member mounted on said base and moving between a locked position where said locking member abuts against a flat face portion of said square pivot member and a released position where said locking member is released from said locked position.