CN2316437Y - Metallic anti-theft door with alarm - Google Patents

Abstract

The utility model relates to an anti-theft door, particularly a metal anti-theft door with an alarm, which is composed of a metal door, a lock and an alarm circuit. A normally closed switch K1 and a lock core moving block (9) are arranged in the lock core of a side lock (8), an alarm (3) and a power supply (2) are arranged in the interlayer of the metal door, a normally closed switch K2, a normally closed switch K3, a normally closed switch K4 and a normally closed switch K5 are arranged on the wall collision position (6), the wall collision position (1), the wall collision position (11) and the wall collision position (12) of a door frame and the metal door, and the normally closed switches K2, K3, K4 and K5 are mutually connected in parallel, and mutually connected with the switch K1 and the alarm (3). Whenever the thieves prize the metal anti-theft door with an alarm, the metal anti-theft door with an alarm can send out alarm signals and stop the thieves. The utility model has the advantages of simple circuit, the capability of continuous alarm, reliable performance and good anti-theft effect, and is suitable for the residences and the offices.

Description

The metal anti-theft door of band warning device

The utility model relates to security door, particularly a kind of metal anti-theft door with warning device.

Multiple locking point around the metal anti-theft door that uses in the prior art has been changed into up and down, limit lock majority need be with snap close and directly on metal door frame perforate substitute, stealer is difficult for door is directly destroyed, force open the door from the limit lock often, majority is the curved dead bolt of sled, make it directly from tapered end, to withdraw from, pry open on the metal door then, down, a left side, right lock point, can cross the threshold and commit theft, because metal door has certain elasticity and toughness, when limit lock dead bolt sled is curved, displacement can appear in the last bottom of door hardly, facts have proved that the incompatible current situation of notification number CN2032220U patented technology has significant limitation and unreliability.

The purpose of this utility model is: a kind of metal anti-theft door with warning device is provided, and when no matter stealer sends alarm signal when where forcing open the door, prevention is committed theft.

Formation of the present utility model: form by metal door, lock and warning circuit, in lock (8) lock core of limit normally closed switch K1 and lock core movable block (9) are housed, alarm (3) and power supply (2) are housed in metal door (4) interlayer, be rebuffed with doorframe (5) and locate to be equipped with normally closed switch K2, K3, K4, K5, normally closed switch K2, K3, K4, K5 is parallel with one another, and connects mutually with K switch 1 and alarm (3).Normally closed switch K2, K3, K4, K5 are installed in doorframe and are rebuffed four jiaos, and K2 is installed in, and rebuffed (6) are located, and K3 is installed in, and rebuffed (1) is located, and K4 is installed in, and rebuffed (11) are located, and K5 is installed in, and rebuffed (12) are located.There is middle lock (7) centre of metal door.

Compared with the prior art, the utility model circuit is simple, connection and reasonable arrangement, and the energy continuous alarm, dependable performance, good anti-theft effect, easy to use.

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is warning circuit figure.

Embodiment of the present utility model: as accompanying drawing 1, shown in the accompanying drawing 2, be provided with normally closed switch K1 in lock (8) lock core of limit, when closing the door state, limit lock pin movable block (9) is recessed the contact of normally closed switch K1, K1 is in on-state, when with behind the door key operated, limit lock pin movable block roof pressure normally closed switch K1 contact, normally closed switch K1 is in off-state, locates to be provided with normally closed switch K2 at doorframe and contacted (6) (1) (11) (12) of being rebuffed of metal door, K3, K4, K5 is when door is closed, because doorframe squeezing action, normally closed switch K2, K3, K4, K5 is in off-state, when metal door was opened slightly, switch contact was upspring, K switch 2, K3, K4, K5 is in on-state, normally closed switch K2, K3, K4, K5 is parallel with one another, connect with normally closed switch K1 and alarm (3) simultaneously, when door was in and normally closes the door state with key, limit lock pin movable block (9) was recessed K switch 1 contact, and K switch 1 is connected, and K switch 2, K3, K4, K5 disconnects, whole circuit is in off-state, during with the key normal door, limit lock pin movable block (9) roof pressure K switch 1, contact is depressed and is disconnected, at door slightly during breakdown, K switch 2, K3, K4, the K5 contact is upspring and is connected, whole circuit still is in off-state, so, when outdoors with key normal switch door or in door, stir cage knob and open at closing time, alarm does not send warning, when dead bolt (10) was become by the stealer sled, lock core movable block (9) was recessed K switch 1 contact, and K switch 1 still is in on-state, simultaneously, be contained in the K switch 2 that rebuffed (6) (1) (11) (12) of doorframe is located, K3, K4, K5 leaves doorframe (5) because of door, switch contact is upspring, and also is in on-state, and whole circuit is connected, alarm equipment alarm, at this moment, if no key unlocking, alarm still continues to send alarm signal, power supply (2), alarm (3) are installed in metal door (4) interlayer.

Claims (3)

1, a kind of metal anti-theft door with warning device is made up of metal door, lock and warning circuit, it is characterized in that: in lock (8) lock core of limit normally closed switch K1 and lock core movable block (9) are housed, alarm (3) and power supply (2) are housed in metal door (4) interlayer, normally closed switch K2, K3, K4 are equipped with in rebuffed place with doorframe (5), K5, normally closed switch K2, K3, K4, K5 is parallel with one another, and connects mutually with K switch 1 and alarm (3).

2, the metal anti-theft door of band warning device according to claim 1 is characterized in that: normally closed switch K2, K3, K4, K5 are installed in doorframe and are rebuffed four jiaos, and K2 is installed in, and rebuffed (6) are located, K3 is installed in, and rebuffed (1) is located, and K4 is installed in, and rebuffed (11) are located, and K5 is installed in, and rebuffed (12) are located.

3, the metal anti-theft door of band warning device according to claim 1 is characterized in that: there is middle lock (7) centre of metal door.

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