Patent ID: 11891225
Assignee: GMT INTELLIGENT ELECTRONIC TECHNOLOGY (KUNSHAN) CO., LTD.
Field: Control (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A box wrap security device comprising:
a key (1),
a connecting piece (2); and
a lock (3);
wherein the key (1) is connected with the connecting piece (2) through a steel wire and the connecting piece (2)) is connected with the lock (3) through the steel wire; the lock (3) comprises an upper shell (31) and a lower shell (35); the upper shell (31) and the lower shell (35) are locked with each other; a knob (32) is embedded in the upper shell (31); a wire spool (33) is fixedly connected to a bottom of the knob (32), and an alarm (34) is connected between the knob (32) and the wire spool (33);
wherein a limiting pin (36) is inserted into a top socket of the lower shell (35); a first spring (37) is sleeved on an upper end of the limiting pin (36); an upper end of the first spring (37) is supported on a bottom of the upper shell (31); a gear (312) is arranged on a bottom of the wire spool (33) along a circumferential direction of the wire spool (33); a through groove is arranged on a left side wall of the lower shell (35); a clamping plate (38) is inserted in the through groove laterally; a bottom of the limiting pin (36) extends to an inner cavity of the through groove; meshing teeth engaged with gear (312) are arranged on a right side wall of the clamping plate (38); support columns (39) are connected to a right side wall of the inner cavity of the clamping plate (38), and second springs (311) are sleeved on an outer wall of the support columns (39); third springs (310) are connected to a front side and a rear side of the clamping plate (38), and a right end of the third springs (310) is propped on an arc-shaped plate in the lower shell (35); when the key (1) is inserted into the clamping plate (38), the key (1) abuts against a bottom surface of the limiting pin (36) and drives the limiting pin (36) to move upward; when the key (1) is inserted to a predetermined position, the limiting pin (36) moves downward to limit a position of the key (1); the key (1) is unable to be pulled out from the clamping plate (38); and the key (1) compresses the second springs (311) to push the clamping plate (38) and make the meshing teeth on the clamping plate (38) to be engaged with the gear (312), such that the gear (312) only able to rotate in one direction; and when the gear (312) rotates, the gear (312) drives the wire spool (33) to rotate to drive the steel wire to wind;
wherein the limiting pin (36) is made of ferromagnetic material; the box wrap security device further comprises a magnetic unlocker (4); a recess (313) is disposed on the upper shell (31), when unlock the box wrap security device, the magnetic unlocker (4) is placed on the recess (313).