CN105370107A - Electromagnetic anti-theft lock - Google Patents

Abstract

An electromagnetic anti-theft lock comprises a key hole, a guide rail, a sliding block, a first spring, a displacement sensor, a single-chip microcomputer, a gear train, a rack, a motor, a trigger switch, an electromagnet, a spring bolt and a second spring. The guide rail is installed on the key hole, is communicated with the key hole and is located above the concave-convex surface of a key. The sliding block is located in the guide rail, and the first spring is installed between the sliding block and the bottom of the guide rail. The displacement sensor is installed on the sliding block and is connected with the single-chip microcomputer, the motor is connected to the single-chip microcomputer, an output shaft of the motor is connected to the rack through the gear train, and the trigger switch is installed at one end of the rack. The trigger switch, a power source and the electromagnet are connected for forming a loop. The electromagnet is installed at one end of the spring bolt, and the spring bolt is provided with the second spring. According to the electromagnetic anti-theft lock, whether the key is correct is judged by comparing the displacement change signal of the key inserted into the key hole; the number of the sliding block is one, the sliding process is different from that of a mechanical lock, and a different sound is made when the sliding block is located at the special position for unlocking, and therefore technical unlocking by a needle head can be prevented.

Description

A kind of Electromagnetic anti-theft lock

Technical field

The present invention relates to mechanical field, specifically a kind of Electromagnetic anti-theft lock.

Background technology

The kind of lockset is a lot, and its structure is of all kinds, wherein the lockset having theftproof performance high out of the ordinary.But most of lockset due to its structure comparatively single, its antitheft orientation is few, robber can be opened within a lot of time, namely described in field technical unlocking, therefore, burglary happens occasionally, threaten to the property of people and life, and always have some high iqs people, lockset stronger for a theftproof performance is studied, develop some anti-antitheft instrument or apparatuses, in today of internet prosperity, lawless person always can buy some anti-anti-theft tools, so can easily by some security doors, the anti-thefting facilities such as theftproof lock carry out technical unlocking.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, provide a kind of

To achieve these goals, present invention employs following technical scheme:

A kind of Electromagnetic anti-theft lock, comprises keyhole, guide rail, slide block, the first spring, displacement transducer, single-chip microcomputer, gear train, tooth bar, motor, trigger switch, electromagnet, dead bolt and the second spring,

Described guide rails assembling keyhole communicates with keyhole, guide rail is positioned at above the male and fomale(M&F) of key, slide block is arranged in guide rail, between bottom slide block and guide rail, the first spring is installed, slide block is provided with displacement transducer, displacement transducer is connected with single-chip microcomputer, motor is connected with single-chip microcomputer, the output shaft of motor is connected with tooth bar by gear train, trigger switch is arranged on tooth bar one end, trigger switch, power supply and electromagnet connect into loop, and electromagnet is arranged on dead bolt one end, dead bolt are provided with the second spring.

Compared with prior art, the beneficial effect that possesses of the present invention:

The change in displacement signal that the present invention is inserted in keyhole by comparison key differentiates that whether key is correct, slide block only has one, and sliding process can not as mechanical lock, different sound can be sent when slide block is positioned at the specific position that can open, therefore, can prevent from carrying out skilled unlocking by syringe needle.

Accompanying drawing explanation

Fig. 1 is the structural representation of Electromagnetic anti-theft lock of the present invention.

Detailed description of the invention

Below by embodiment, technical scheme of the present invention is further elaborated.

Embodiment 1

A kind of Electromagnetic anti-theft lock, comprises keyhole 6, guide rail 3, slide block 2, first spring 4, displacement transducer 5, single-chip microcomputer 7, gear train 9, tooth bar 10, motor 8, trigger switch 11, electromagnet 14, dead bolt 12 and the second spring 13,

Described guide rail 3 to be installed on keyhole 6 and is communicated with keyhole 6, guide rail 3 is positioned at above the male and fomale(M&F) of key, slide block 2 is arranged in guide rail 3, between bottom slide block 2 and guide rail 3, first spring 4 is installed, slide block 2 is provided with displacement transducer 5, displacement transducer 5 is connected with single-chip microcomputer 7, motor 8 is connected with single-chip microcomputer 7, the output shaft of motor 8 is connected with tooth bar 10 by gear train 9, trigger switch 11 is arranged on tooth bar 10 one end, trigger switch 11, power supply 15 and electromagnet 14 connect into loop, electromagnet 14 is arranged on dead bolt 12 one end, dead bolt 12 is provided with the second spring 13.

Operating principle and process thereof:

First, when storing correct key insertion keyhole in single-chip microcomputer 7, the change in displacement signal of the slide block 2 that displacement transducer 5 is passed back.When unblanking, after inserting key 1, displacement transducer 5 records the change in displacement of key 1 insertion process slide block 2, and signal is reached single-chip microcomputer 7, compare with the signal of correct key, if signal is consistent, illustrate that key 1 is correct, single-chip microcomputer 7 controls motor 8 and rotates, and be with carry-over bar 10 to move by gear train 9, open trigger switch 11, the loop energising that trigger switch 11, power supply 15 and electromagnet 14 connect into, dead bolt 12 attracts by electromagnet 14, and door can be opened.Then, dead bolt resets by the second spring 13.Between bottom first spring 4 tensioning and slide block 2 and guide rail 3, there is good contact with key 1 all the time to keep slide block 2.

Claims (1)

1. an Electromagnetic anti-theft lock, is characterized in that, comprises keyhole, guide rail, slide block, the first spring, displacement transducer, single-chip microcomputer, gear train, tooth bar, motor, trigger switch, electromagnet, dead bolt and the second spring,

Described guide rails assembling keyhole communicates with keyhole, guide rail is positioned at above the male and fomale(M&F) of key, slide block is arranged in guide rail, between bottom slide block and guide rail, the first spring is installed, slide block is provided with displacement transducer, displacement transducer is connected with single-chip microcomputer, motor is connected with single-chip microcomputer, the output shaft of motor is connected with tooth bar by gear train, trigger switch is arranged on tooth bar one end, trigger switch, power supply and electromagnet connect into loop, and electromagnet is arranged on dead bolt one end, dead bolt are provided with the second spring.