Abstract: An inserting and extracting motion of an optical plug can be easily carried out via a knob, even in a narrow space. An optical connector plug is provided with a stopper guide in a rear portion of an upper surface of a knob to which an optical plug is installed, a spring guide, an outer cover which is provided in an outer surface of the knob, and a spring which is arranged in between the stopper guide and the outer cover. In the optical connector plug, the outer cover is pressed by an optical connector adapter so as to move backward while compressing the spring, whereby a shutter is opened and the optical plug is allowed to protrude forward from the outer cover. The optical connector plug is provided with a grip portion which protrudes up and down and right and left from a rear end portion of the knob.

Abstract: An inserting and extracting motion of an optical plug can be easily carried out via a knob, even in a narrow space. An optical connector plug is provided with a stopper guide in a rear portion of an upper surface of a knob to which an optical plug is installed, a spring guide, an outer cover which is provided in an outer surface of the knob, and a spring which is arranged in between the stopper guide and the outer cover. In the optical connector plug, the outer cover is pressed by an optical connector adapter so as to move backward while compressing the spring, whereby a shutter is opened and the optical plug is allowed to protrude forward from the outer cover. The optical connector plug is provided with a grip portion which protrudes up and down and right and left from a rear end portion of the knob.

Abstract: For a less load to a shutter and secure motions of the shutter without damaging a ferrule, a rear stopper guide (22) and an intermediate spring guide (23) covering an upper side of a hold of an optical plug, and an outer cover (24) covering a front outer periphery of the hold are provided; the outer cover (24) is pushed by an optical connector adapter (Q) to move from a front end position of the hold to a rear end position, an inner side of the outer cover (24) is provided with a shutter (21) which can be swung from a lid close position to a lid open position, and the shutter (21) is automatically opened and closed by a shutter automatic opening and closing mechanism (S) in accordance with a rack and pinion system, working with rearward and forward movements of the outer cover (24).

Abstract: For a less load to a shutter and secure motions of the shutter without damaging a ferrule, a rear stopper guide (22) and an intermediate spring guide (23) covering an upper side of a hold of an optical plug, and an outer cover (24) covering a front outer periphery of the hold are provided; the outer cover (24) is pushed by an optical connector adapter (Q) to move from a front end position of the hold to a rear end position, an inner side of the outer cover (24) is provided with a shutter (21) which can be swung from a lid close position to a lid open position, and the shutter (21) is automatically opened and closed by a shutter automatic opening and closing mechanism (S) in accordance with a rack and pinion system, working with rearward and forward movements of the outer cover (24).

Abstract: A solder ball supply device comprising flux supply means 200 which supplies flux at the same time to input and output terminals on substrate 1 prior to supply of solder balls, and solder ball supply means 300 which takes out a number of solder balls from discharger 350 in which solder balls are held matrixwise at the same time in the same pattern as the pattern of said input and output terminals and supplies solder balls to said input and output terminals to which flux has been supplied.