| 摘要 |
The device has a plunger (6) projecting in a preset direction, and a stator (10) disposed opposite to the plunger. A trigger spring (8) pushes a slider (9) in projection direction of the plunger. A yoke (3) has a magnetic circuit to provide magnetic flux from a permanent magnet (5) so that the flux traverses the plunger and the stator. An electromagnet forms an inverse magnetic filed opposite to magnetic field produced by the magnet. A product mould is used as a flexible component (12) that recovers the spring, and extends and contracts based on displacement of the projection of the plunger.
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