CN2401659Y

CN2401659Y - Theft-proof with key plug-in sensor

Info

Publication number: CN2401659Y
Application number: CN 99236493
Authority: CN
Inventors: 金述强
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-30
Filing date: 1999-06-30
Publication date: 2000-10-18
Anticipated expiration: 2009-06-30

Abstract

The utility model relates to a theftproof lock with a sensor for detecting key insertion. A sensor is arranged at the contacting point of the head part of a key and a rotating component of a lock core body, a signal line of the sensor is connected with a theftproof electronic controller, the time period of the normal unlocking is usually not greater than 10 minutes, and the time period of the lock core breaking is greater than 30 seconds far and away. Hence, when a lock core is inserted by a key, the sensor in the utility model provides a switching value signal for the theftproof electronic controller, and an electronic theftproof system determines to output an alarm signal or not through logic analysis.

Description

Detect the theftproof lock that key inserts sensor a kind of having

The utility model belongs to the family expenses anti-theft device, relates in particular to detect the theftproof lock that key inserts sensor a kind of having, and this lock is adapted at electronic warning system most and uses.

Existing building anti-theft device generally can be divided into two kinds of mechanical security door and electronic warning and anti-theft systems, the former mainly is made up of metal anti-theft door and corresponding mechanical anti-theft lock, this anti-theft device mainly is to rely on its firm metal construction to reach antitheft purpose, but any mechanical antitheft lock all has it to crack way accordingly, thereby its theftproof performance all need be beaten certain discount; The latter then is by its comparatively perfect electronic warning system, to realize its center control or remote perception, reach antitheft purpose, this method has more advantage, but the user must often remember to open or close this electric theft-proof system, otherwise will cause false alarm or fail to report the police, and this system be performed practically no function, and do not reach the anti-theft effect of expection.

We have developed a kind of electronic warning special-purpose theft-proof lock for this reason, and have obtained national patent, the patent No.: 982349769.This patented product combines with the electric theft-proof system of band cryptographic key, makes the performance of system improve a step greatly.But still have weak point: the user must be by the code keypad input password on the door before opening the door, can open the door after errorless, otherwise system alarm.The main purpose that code keypad is set is to prevent that the thief from breaking lock core, if can effectively detect the broken lock core of people, and in time reports to the police, and code keypad has not just needed.So-called broken lock core is meant that the instrument that adopts the similar key of front end inserts stirring repeatedly up and down in the key, the technology that lock core marble was lost efficacy.

The utility model is exactly at above-mentioned broken lock core burglary behavior, and provides detect the theftproof lock that key inserts sensor a kind of having.

Detect the theftproof lock that key inserts sensor a kind of having, and it is characterized in that: at key head and lock core body rotatable parts contact position sensor is installed, the holding wire of sensor is taken over control robber's electronic controller.

Owing to sensor is installed at key head and lock core body rotating part contact position, the time cycle of normally unblanking was not more than for 10 seconds usually, the time cycle of broken lock core then was far longer than for 30 seconds, therefore when key inserts lock core, sensor in the utility model provides a switching value signal for the theft-proof electron controller, electric theft-proof system is through logic analysis, whether determines output alarm signal.

Fig. 1 is an embodiment schematic diagram of the present utility model.

Describe in detail below in conjunction with accompanying drawing.

As shown in Figure 1, the 1st, key, the 2nd, lock core fixed part, the 3rd, lock core rotary part, the 4th, driving lever, the 5th, miniature on-off switch, the 6th, theft-proof electron controller.

Detect the theftproof lock that key inserts sensor a kind of having, and at key head and lock core body rotatable parts contact position sensor is installed, and the holding wire of sensor is taken over control robber's electronic controller.

As shown in Figure 1, at key head and lock core body rotatable parts contact position miniature on-off switch sensor is installed, after key inserts lock core, key head is connected miniature on-off switch, for the theft-proof electron controller provides a switching value signal, when key inserts the lock core time during greater than 30 seconds, electric theft-proof system is through logic analysis, i.e. output alarm signal.

The supply voltage of electronic controller is lower than 24V in actual use, therefore there is not any unsafe factor, electronic controller also can adopt single-chip microcomputer or other logic circuits to realize that this utility model is not destroyed the original function of lock, is the good product that prevents that the broken by force chamber of locking of thief from committing theft.

Claims

1, detect the theftproof lock that key inserts sensor a kind of having, it is characterized in that: at key head and lock core body rotatable parts contact position sensor is installed, the holding wire of sensor is taken over control robber's electronic controller.

2, theftproof lock as claimed in claim 1 is characterized in that: sensor is miniature on-off switch.