| 摘要 |
The switch, in the passive position stops, and in the active state causes the robot to function, against the effect of a return spring. The switch comprises pref. a primary pair of switch units (29,30) activated by a shaft (15) which moves axially, and motivated by an operating button (27) against the force of a spring (22). The shaft has at least one part (19), located centrally to the pair of switch units, which can close or open them. A second pair of switch units (31,32) is activated by continued operation of the button past the active intermediary position of the primary pair, and against the effect of a further spring (23) to a stopping position for the machine. The primary switch pair is incorporated in a readjustment circuit which is only closed when the retainer is inactivated. |
