Unlocking device

The invention relates to for control piece (10) unlocking device; the unlocking device with an operation electromagnet (12); the operation electromagnet with an operation (16); the operation of the opened with an electromagnet disks (14) and/or on the end part of the guide, and can along the axis (20) moving portion and a control device (24) swinging chute in an operation position (22); the control device (26) capable of swinging the back of the second axis; the control device (24) and locker (30); the locking a supporting the operation (16) via of the control device (24) unlocking device is a control piece of secondary use (10)The path (32), the is characterised by, a control device (24) is provided with a swinging rod (34); the swinging rod (26) capable of swinging of the second axis of the shell part (28), the second axis (26) is parallel to the first axis (20) extending, swinging rod (34) on the free end; the operation electromagnet (12) is a pneumatic the lower of (16) and operation is pasted and a locking on the swinging rod (34) are (30), a control piece (10) through the locking maintaining of the locking position.