CN2196156Y

CN2196156Y - Magnetic safety door lock

Info

Publication number: CN2196156Y
Application number: CN 93225436
Authority: CN
Inventors: 张宗志
Original assignee: Individual
Current assignee: Zhang Zongzhi
Priority date: 1993-03-31
Filing date: 1993-03-31
Publication date: 1995-05-03
Anticipated expiration: 2003-03-31

Abstract

The utility model relates to a magnetic safety door lock, which belongs to a safety equipment. The magnetic safety door lock is a favorable theft-protection door lock which can be used for important occasions such as a hotel, an airport, a government organ, a museum, a bank, etc. On the basis of the existing magnetic door lock, the structure of the utility model is realized by detecting electrodes 2 and a remembering wafer 6. One side or both sides of a fitting surface between a magnetic lock head 1 and a relaying iron plate 3 are respectivley provided with two detecting electrodes 2; the circuitboard of the remembering wafer 4 is arranged at the position corresponding to the relaying iron plate; the order number of circuitboard of the remembering wafer can be read by the detecting electrode 2; a central processing unit CPU distinguishes a cut-off state or a switching-on state according as that if the order number of the remembering wafer 6 is read.

Description

Magnetic safety door lock

The utility model relates to the safe magnetic door lock, belongs to a kind of security device.

The disclosed safe magnetic door lock of the utility model is a kind of excellence, the place that can be used for hotel, airport, the office that maintains secrecy, museum, bank, defence land equal altitudes need save from damage, this magnetic door lock not only meets antitheft requirement but also meets the standard of security against fire.

Known magnetic door lock is formed (referring to Fig. 2) by the Electromagnetic lock 1 that is installed in the doorframe top and the iron plate 3 of continuing of disposing on the correspondence position of door leaf.When the user connected power supply by electronic switch 7 or other police guard at as entrance's control system (as magnetic card, password etc.), Magnetic lock head 1 promptly formed flux loop with the iron plate 3 of continuing, and produces powerful suction door leaf is pinned, and can prevent the invasion of external force effectively.When the user passed through electronic switch 7 powered-downs, Electromagnetic lock 1 can be released out with the iron plate 3 of continuing moment.The unlatching of door leaf or closing state can assert by the signal of magnetic force line cutting magnetic reed switch or Hall element generation, and the security control chamber is the signal state that monitors the keying of door leaf or do not have external force to invade thus.

Yet magnetic door lock has a fatal weakness.When door leaf is in opening, if there is people's (containing stranger or inner defalcator) on the correspondence position of Electromagnetic lock 1, to put the iron plate 3 of continuing, while unlocking electronic switch 7, this moment, Electromagnetic lock 1 produced flux loop with this iron plate 3 of continuing, magnetic reed switch or Hall element produce the door leaf shutdown signal because of the cutting of the magnetic line of force, and notice security control chamber.And in fact this door leaf has been opened wide and has no safety and can say.

The task of the utility model just provides and a kind ofly can overcome above-mentioned shortcoming and safe and reliable magnetic door lock.

The task of the utility model is achieved through the following technical solutions: in Electromagnetic lock 1 and fitting face one side or the difference both sides of the iron plate 3 of continuing two exploring electrodes 2 are installed.Central processor CPU for anodal and security control chamber joins another root ground connection.Install one with the relevant position of the exploring electrode 2 of Electromagnetic lock 1 and can be detected the memory wafer circuit board 4 that electrode 2 reads continuous number on the iron plate 3 of continuing, this circuit board has two sensing points 5 that match with exploring electrode 2.After door leaf was closed and connects power supply, Electromagnetic lock 1 and continue and constitute flux loop between the iron plate 3 firmly attracted mutually.The sensing point 5 of exploring electrode 2 and memory wafer circuit board 4 is communicated with simultaneously, and the central processor CPU of security control chamber reads the sequence number of memory wafer 6 just can understand closing or opening of room exactly.If any the people iron plate of continuing is placed on the fitting face of Magnetic lock head 1, central processor CPU is because of reading also to distinguish the true and false of closed condition less than the sequence number of memory wafer 6, and gives the alarm.

The advantage of the utility model is safe and reliable, can prevent the external force intrusion effectively.

Now in conjunction with the accompanying drawings embodiment of the present utility model is described as follows:

Fig. 1: be the schematic diagram of magnetic door lock.

Fig. 2: be the scheme of installation of magnetic door lock.

As shown in Figure 1, the principle of the utility model is realized by exploring electrode 2 and memory wafer 6.In either side or the difference both sides of Electromagnetic lock 1 with iron plate 3 fitting faces that continue, two exploring electrodes 2 are installed, wherein the CPU for anodal and security control chamber joins another root ground connection.Be provided with a memory wafer circuit board 4 in the relevant position of the iron plate 3 of continuing, there are two sensing points 5 in the front of this memory wafer circuit board 4, and it is connected two sensing points 5 by a memory wafer 6 behind.When door was in closed condition, exploring electrode 2 contacted with sensing point 5, and the sequence number that the central processor CPU of security control chamber just can be read on the memory wafer 6 is differentiated the also state of show gate.

Claims

1, safe magnetic door lock is made of Electromagnetic lock 1, the iron plate 3 of continuing, memory wafer 6, it is characterized in that: on the fitting face of the Magnetic lock head 1 and the iron plate 3 of continuing two exploring electrodes 2 are set; A memory wafer circuit board 4 is set on the relevant position of iron plate 3 of continuing, two sensing points 5 are arranged on this circuit board.

2, safe magnetic door lock according to claim 1 is characterized in that: two exploring electrodes 2 on the fitting face of Electromagnetic lock 1 a side or respectively in the both sides of fitting face.