| 摘要 |
A magnetic thrust theft-proof label comprises a shell composed of an upper cover and a pedestal. A coil alarm and a theft-proof nail locking mechanism are provided between the upper cover and the pedestal. A theft-proof nail is inserted into the shell from the upper cover and located by the locking mechanism. The locking mechanism comprises a locking bead cap with a trapezoid section, a locking bead fixing seat fitting with the inner cavity of the locking bead cap, no less than three locking beads and a spring component resisting the locking bead fixing seat. A magnetic force switch device is provided on the locking mechanism. A magnetic block in the magnetic force switch device is pushed by a magnet in an unlocking piece to move towards a direction away from the magnet. The magnetic block pushes the locking mechanism to open. |
