| 摘要 |
The device has switch contacts separated by a gap at rest, at least one movable and held in its rest position by a contact spring(s). The contacts are closed when a predefined switching force counteracts the spring force and are magnetically coupled by a fixed permanent magnet. The movable contact is left in the rest position if no switching force or a force below a threshold is acting and is closed if the force exceeds the threshold. The device has at least two switch contacts (6,7) separated by a gap (10) at rest, at least one being movable and held in its rest position by at least one contact spring (3). The contacts are closed when a predefined switching force counteracts the contact spring force. The contacts are magnetically coupled by a fixed permanent magnet (8). The gap, the effective magnet force and the spring force are dimensioned to leave the movable contact (6) in the rest position if no switching force or a force below a threshold is acting and to close the contacts if the force exceeds the threshold. |
