CN2263186Y - Automatic alarm theft-proof door - Google Patents

Abstract

The utility model relates to an automatic alarm theft-proof door which can prevent from prying, drilling, sawing and other destructive measures. On the basis of an ordinary theft-proof door, mutually insulating inner and outer sleeve pipes are partially used in a steel bar or pipe, and the center is provided with a tight nude conducting wire. Two layers of metal plates whose middle part is insulating and which are not connected by electricity are used for making composite plates, and the whole door is formed into a broken electric loop. The principles of controlling opening and closing by a short circuit and automatic time delay are used to make the automatic alarm realized when criminal take any measure to the theft-proof door.

Description

The automatic alarm anti-theft door

The utility model relates to a kind of security door, and is specifically a kind of can force open the door, bore lock, gas cutting and saw copper muscle and other destructive crime means the offender time, realizes the security door of reporting to the police automatically.

At present, that known security door has is semi-enclosed, two kinds of totally enclosed types, and the former is by angle steel, and the theftproof lock that reinforcing bar, metal pipe material or sheet material weldering system are equipped with window screening and insurance combines; The latter is equipped with safety lock by the sheet metal moulding, some burglar alarm facilities had both been made, it also is single artificial and induction alarm, keep away unavoidable frequent at ordinary times manually-operated, more existing induction alarms are error accidentally at ordinary times unavoidably, and false alarm, unscientific in addition power supply and indispensable circuit be the deadly defect of a lot of burglar alarms especially.For the home safety people press for a kind of security door of reporting to the police the offender is trembled with fear on hearing the news automatically can realized when various crime means such as prizing, bore, saw, cut.

The purpose of this utility model provides a kind of rational in infrastructure in order to overcome weak point of the prior art exactly, higher mechanical strength is arranged, even and can take to prize criminal, bore, saw, cut with other destructive external force effect under the offender that realizes exactly reporting to the police automatically stop the automatic alarm anti-theft door of committing a crime, reporting to the police and also can not stop at once.

The purpose of this utility model is achieved in that at the existing angle bar of using, reinforcing bar or pipe, on the agent structure basis of sheet metal weldering system security door, change the reinforcing bar up and down of former door in-core or pipe into inside and outside, double-level-metal cylinder pipe, therebetween insulating layer, outer tube and interior pipe are not electrically connected, one center nude lead is arranged in the inner sleeve, fixedly tighten by the outer tube two ends, lead is electrically connected by outer tube two ends and outer tube; With former door in-core up and down the iron plate of reinforcing bar or pipe center fixed lock change the composite plate of inside and outside double layer of metal plate therebetween insulating layer into, composite plate internal layer and composite plate skin are not electrically connected; Cylinder outer tube, central vertical nude lead, composite plate skin, back shroud are electrically connected the outer induction terminal b that forms sealing, that is to say that exposed parts is a complete outer induction terminal; Cylinder inner sleeve, composite plate internal layer, back barrier layer connect and compose hidden induction terminal a, that is to say that internal layer is to be isolated by insulating layer not to be electrically connected mutually with skin and to form an integrated sensor cable terminal.In the concealed space that composite plate and back shroud constitute, electric capacity is in parallel with the open type relay, a termination battery pack negative pole, and another termination diseases caused by external factors are answered terminal b.Battery anode meets induction terminal a, forms delay control circuit, and the integrated alarm circuit anode connects battery anode, and negative pole is succeeded the normal contact of electrical equipment and become off state with the battery pack negative pole.When criminal prizes the compression leg body, can be because of the cylinder off-centring, and be arranged on the bare lead non-migration at center and realize responding to terminal a, b short circuit, relay has electric current to pass through constant open contact adhesive alarm work, when criminal stops to commit a crime because of warning, electric capacity charges because of a, b short circuit, even at this moment cylinder is because of elastic recovery terminal a, no longer short circuit of b, but and the relay of electric capacity parallel connection can pass through because of capacitor discharge still has electric current, constant open contact continues adhesive, and the alarm time of fire alarming length that works on is decided by the capacitance size.As a same reason when criminal's sawing cylinder, can destroy terminal a because of the insulating layer in the middle of the internal and external casing, the b short circuit realizes reporting to the police, work as the offender, when brill cuts composite plate, can make terminal a because of being clipped in the middle insulating layer destruction of double layer of metal plate, the b short circuit, realize reporting to the police, hardheaded enclosed construction, can cause that unavoidably the offender establishes the thought of warning system in destroying, but the periphery has no way of doing it, even probe into destructive instrument from the back shroud sound hole, also can form terminal a immediately because of having established barrier layer in the protected apron ingeniously, the b short circuit, and realize reporting to the police, because the sound hole distributed points is more, the attempt block sound is raised outward and can't be accomplished.

The utility model has been compared following remarkable advantage with prior art;

The first, owing to adopt such scheme, can both accurately realize automatically reporting to the police in the time of can prizing, saw, bore, cut with other means destruction security door criminal.The second, overall structure is rigorous rationally, and mechanical strength is higher, and is stable and reliable for performance, easy to use.Three, because power supply adopts direct current 12V battery pack, be not subjected to the influence of civil power, therefore practical, safety, battery pack is not having not consumption under the situation of merit, four, no matter door and window all can reach antitheft to adopt this principle, reports to the police to remove numerous residents' trouble and worry automatically, is particularly useful for financial department etc.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is circuit theory diagrams of the present utility model.

Among the figure 1, cylinder center fixation card pad 2, cylinder outer tube

3, cylinder inner sleeve 4, central vertical nude lead

5, composite plate skin 6, composite plate internal layer

7, electric capacity 8, open type relay

9, alarm 10, back barrier layer

11, back shroud 12, battery pack.

In the accompanying drawings, cylinder outer tube (2), central vertical nude lead (4), composite plate skin (5), back shroud (11) are electrically connected the outer induction terminal b that forms sealing; Cylinder inner sleeve (3), composite plate internal layer (6), back barrier layer (10) connect and compose hidden induction terminal a, battery pack (12) adopts direct current 12V, positive pole is connected with induction terminal a, electric capacity (7), open type relay (8) are parallel between the induction terminal b of battery pack negative pole and sealing, alarm (9) negative pole meets open type relay (8), anodal connecting terminal a, meets that criminal prizes, cuts, saws, all can make the outer induction terminal b of sealing and hidden internal induction terminal a be short-circuited and realize reporting to the police during various crime means such as brill.

Claims (2)

1, a kind of automatic alarm anti-theft door that has doorframe, door core to constitute, it is characterized in that: the last lower prop of door in-core is with inside and outside double-level-metal sleeve pipe, the therebetween insulating layer constitutes, outer tube and interior pipe are not electrically connected, one central vertical nude lead is arranged in the inner sleeve, tighten by outer tube two ends center fixation, lead is electrically connected with outer tube by the outer tube two ends; The composite plate of an inside and outside double layer of metal plate therebetween insulating layer is arranged in the middle of the lower prop on the door in-core, and composite plate internal layer and composite plate skin are not electrically connected; The cylinder outer tube, central vertical nude lead, the composite plate skin, back shroud is electrically connected the induction terminal b that forms sealing; Cylinder inner sleeve, composite plate internal layer, back barrier layer connect and compose hidden integrated sensor cable terminal a; The power supply of control delayed alarm circuit, adopt the positive pole of direct current 12V battery pack, battery pack to be connected with terminal a, electric capacity, open type relay are parallel between the induction terminal b of battery pack negative pole and sealing, the constant open contact that the alarm negative pole connects the open type relay makes warning circuit negative pole and power cathode be in off state, and positive pole connects positive source.

2, automatic alarm anti-theft door according to claim 1 is characterized in that middle composite plate one end of a core is the same with other security door, and door lock and doorframe that the First Five-Year Plan insurance also is housed are sealed.