CN2208084Y

CN2208084Y - Safeguard electronic lock

Info

Publication number: CN2208084Y
Application number: CN 94217515
Authority: CN
Inventors: 贾大成
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-28
Filing date: 1994-07-28
Publication date: 1995-09-20
Anticipated expiration: 2004-07-28

Abstract

The utility model relates to an anti-theft and safe electronic power-supply lock, which is composed of a key, a lock core, a cable wire, a lock disk and an armature used for protecting a center electric appliance. The inner part of the key is provided with eight contact points and a resistance, the inner part of the lock core is provided with eight contact points and two switches, and the contact points and the switches are corresponding to the key. The inner part of the lock disk is provided with ten resistances, three diodes and two relays. The utility model has the advantages of simple and practical circuit, stable and reliable performance, anti-decoding performance, anti-external power performance, etc., and is suitable for motor vehicles, high-grade safes, computers, back rooms, etc.

Description

Safeguard electronic lock

The utility model relates to a kind of safe antitheft electronic power supply lock of a kind of motor vehicle and the use of other harbors.

Existing automobile-use safety anti-theft lock mainly contains two kinds of cylinder type and combination types.The major defect of these two kinds of locks is with antitheft poor effect, or cost is high and give away secrets easily.And more new-type electronic anti-theft lock circuit complexity, fragile is impracticable to environment temperature voltage request height, is easy to utilize external power supply to make lock make antitheft effect.

The purpose of this utility model is to design a kind of safe, the anti-anti-external power supply of decoding, the safety lock of simple and stable, i.e. safe antitheft electronic power supply lock.

Safe antitheft electronic power supply lock connects the cable of lock core and lock collar by key, lock core, lock collar.The armor, core electrical appliance power input interface and general electrical appliance power input interface are formed, 8 contacts, a resistance, a salient point are wherein arranged in the key, have in the lock core with key in corresponding 8 contacts, 8 contacts and two switches, 10 resistance are arranged in the lock collar, 3 diodes, two relays, wherein a resistance is formed bridge circuit in 7 resistance and the key, 3 resistance are current-limiting resistance in addition, the armor and lock collar are connected as a single entity, and described relay is made up of a copper sheet, 4 blocks of electromagnet and 3 blocks of permanent magnets.

The utility model has the advantages that inherently safe degree (8 different arrangements in contact, resistance factor in addition), can prevent to decode and prevent external power supply (start-up circuit anti-decodes, the armor prevent external power supply), the simple and direct practicality of circuit, stable and reliable for performance, the anti-mechanical oscillation of holding concurrently, use extensive.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is the utility model key part-structure figure;

Fig. 2 is the utility model other part-structure sketches except that the key part;

Fig. 3 is the utility model key sectional drawing;

Fig. 4 is the utility model lock core sectional drawing;

Fig. 5 is the utility model relay construction sketch;

Fig. 6 is the utility model circuit theory diagrams.

In Fig. 3, Fig. 4, figure: 11-lead, 12-encrypt resistance, 13-contact, 14-lead.

Referring to Fig. 5: ob-relay code name, l ₁-input, l ₂-output, o-copper sheet, the disconnected chalaza of P-, E ₁And E ₂, F ₁And F ₂The electromagnet of-common flux, opposite magnetic fields direction, G ₁, G ₂, G ₃The permanent magnet of-common flux and magnetic direction unanimity.

Referring to Fig. 6, among the figure: A-key circuit, B-lock core circuit, C-cable, D-lock collar circuit, HX-core electrical appliance, its power input and near part are subjected to the armor (7) protection, the general electrical appliance of YB-, K ₁-moving the normal open switch that closes, by key (1) front end press touch close, K ₂-moving the normal open switch that closes, by the salient point (3) on the key (1) press movingly close, K ₃, K ₄-be relay ob ₁Ob ₂Switch, K ₅-HX uses switch, K ₆-YB uses switch, D ₁D ₂-work the diode, the D that increase the safety factor effect ₃-prevent to cross the armor carries out external power supply to HX diode, A ₁～A ₈8 contacts in the key, a ₁～a ₈8 contacts of the lock collar circuit of-stube cable line are at A ₁～A ₈With a ₁～a ₈Connection in, have only a kind of mode of communicating to make I _MNTwo contacts of=O, M, N-electric bridge, R ₁～R ₈8 resistance of-bridge circuit, and it satisfies R ₁+ R ₂+ R ₃/ R ₄+ R ₅+ R ₆=R ₈/ R ₇Relation, wherein R ₆Be variable resistor, R ₉, R ₁₀Common restriction start-up circuit electric current, R ₁₀Also has restricted passage relay ob ₁The function of current, and prevent K ₃Closed too early, R ₁₁Lockmaking closed circuit electric current.

Entire circuit is made up of three parts, start-up circuit part-set out through R by positive source ₉, R ₁₀Pass through R at last ₃R ₄Get back to power cathode, locking circuit part-set out through K by positive source ₃Pass through K at last ₅, K ₆Get back to power cathode, whole lock utilization start-up circuit passes through K ₃, K ₄Dual control electrical appliance circuit utilizes locking circuit locking electrical appliance circuit again.

Embodiment: referring to Fig. 1 and Fig. 2, safe antitheft electronic power supply lock is by key (1), lock core (4), cable (5), lock collar (6), the armor (7), core electrical appliance power input interface (8), general electrical appliance power input interface (9), and external power source (10) is formed.

The operating principle explanation is referring to Fig. 6.

Key (1) begins to advance the at first moving K that closes in the lock core (4) of lock core (4), salient point (3) ₂Switch, this moment, locking circuit was partly started working, i.e. relay ob ₁Work, K switch ₃Disconnect relay ob ₂Also work K switch simultaneously ₄Closure, electrical appliance circuit state are K switch ₃Open, K switch ₄Close and do not power, key (1) continues to advance.Salient point (3) is crossed K switch ₂After, K switch ₂Disconnect, locking circuit quits work.Key (1) is advanced to the bottom and oppresses the K of lock core (4) bottom ₁Switch closure, contact A at this moment ₁～A ₈With a ₁～a ₈Difference cooperate, it three kinds of situations can occur.

The first, start-up circuit is not connected, and the electrical appliance circuit is kept former not power supply state.

The second, start-up circuit is connected, but I _MN≠ 0, this moment relay ob ₁And ob ₂Work K switch simultaneously ₃Closure, K switch ₄Disconnect electrical appliance circuit state: K switch ₃Close K switch ₄Open and do not power.

The 3rd, start-up circuit is connected, and I _MN=0, this moment relay ob ₁Work, K switch ₃Closure, relay ob ₂Do not work K switch ₄Keep former closure state.The electrical appliance circuit state, K switch ₃Close K switch ₄Close, electrical appliance is powered.

Cancel key (1) to K switch ₁Pressure, K switch ₁Automatic disconnection, start-up circuit quits work, and the electrical appliance circuit maintains the original state.

Draw back key (1), moving the running jointly of salient point (3) closed K ₂, locking circuit work is relay ob ₁And ob ₂Work K switch simultaneously ₃Disconnect K switch ₄Closure, electrical appliance circuit state, K switch ₃Open K switch ₄Close, do not power.

Draw back key (1) fully, salient point (3) is crossed K switch ₂After, K switch ₂Automatic disconnection, locking circuit quits work, and the electrical appliance state is kept former K switch ₃Open K switch ₄Close, not power supply state.

Claims

1, a kind of safe antitheft electronic power supply lock, comprise key (1), lock core (4), pass through the lock collar (6) that cable (5) connects with lock core (4), it is characterized in that: 8 contacts (2) and resistance, a salient point (3) are arranged in the key (1), 8 contacts (13) corresponding with interior 8 contacts of key (1) (2) and 2 K switch are arranged in the lock core (4) ₁, K ₂10 resistance are arranged in the lock collar (6); 3 diodes; two relays; wherein interior 1 resistance of 7 resistance and key (1) is formed bridge circuit, and three resistance are current-limiting resistance in addition, and other has the armor (7) of a protection core appliances power source input to be connected as a single entity with lock collar (6); and core electrical appliance power input interface (8), general electrical appliance power input interface (9) and external power source (10).

2, a kind of safe antitheft electronic power supply lock according to claim 1, it is characterized in that: the relay in the lock collar (6) is by a copper sheet (15), 4 electromagnet E ₁, E ₂, F ₁, F ₂With three permanent magnet G ₁, G ₂, G ₃Form.