| 摘要 |
The flexible cable comprises an inner wire and an outer casing, and passes through a tube (5) fitted parallel along the linear motor (4), the tube having two holes (7) positioned opposite to one another. Outside the tube (5) with holes (7) are fitted two micro-switches (8), slightly displaced in relation to one another, which control the movement of the linear motor. Each switch has a projecting arm which at its outer end has a contact component, e.g. a roller, which can be inserted into the tube (5) through the hole (7) where it is activated by the outer casing of the cable (2) when it is moved in the tube. One of the micro-switches (8) is arranged nearest the piston connecting rod (5), and is non-electrically connecting in the inactivated position. The other, i.e. rear, micro-switch is non-electrically connecting in the activated position. |
