CN2162498Y - Protection device of door lock - Google Patents

Abstract

The utility model relates to a door lock protecting device which is installed on a house door. The utility model is characterized in that a key inserting hole is arranged on a base plate corresponding to a lock core of the house door, and an anti-prizing switch and an electronic acoustic alarm device electrically connected with the anti-prizing switch are arranged in a box body. Because the utility model has the functions of prizing prevention for a door lock, drilling prevention for the door lock and blocking prevention of the door lock, the utility model is especially suitable for being installed on the house doors of residential buildings. The utility model has the advantages of small volume and safety.

Description

Protection device of door lock

The utility model relates to a kind of door lock protective device that is installed on the door; mainly have the substrate of beginning to speak by being fixed on the door-plate upper periphery; one side is hinged on the substrate and can be by beginning to speak and substrate box body closely; be arranged on the lock bridge that also can insert on the substrate in the box body; and be installed in the combination padlock that dead bolt can be inserted lock bridge on the box body cover plate and form, belong to antitheft apparatus technology.

At present, the be everlasting way of installing built-in lock on the outdoor door of people increases its anti-theft effect, but since door on the built-in lock core end face be exposed to the door external, thereby the robber very easily occurs and bore bad lock core with drilling tool and open the problem of door burglary, also exist that door is external very easily to be stopped up the weak point that can't open door by foreign matter because of the lock core end face is exposed to simultaneously.

The purpose of this utility model provides a kind of lockset of protecting on the door and is not damaged, and can stop foreign matter to stop up the door lock protective device of lock core.

The purpose of this utility model realizes by following technical measures exactly: with the corresponding substrate of door lock core on offer key hole, pick-proof switch and the electronic audio alarm that is electrically connected with the pick-proof switch are set in box body.

During use with the data on the combination padlock to the position of opening, draw back box body and promptly can expose key hole on the substrate.

Prevent that door lock from being prized, drilled, the function that is blocked owing to the utlity model has, thereby extremely be fit to be installed on the esidential building door to have little, the safe and reliable advantage of volume.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the side-looking structure chart of the utility model when Fig. 1 state.

Fig. 3 is the structural representation of substrate in the utility model.

Fig. 4 is a pick-proof construction of switch schematic diagram in the utility model.

Fig. 5 is the structural representation of box body pick-proof switch in the utility model.

Fig. 6 is the circuit diagram of electronic alarm in the utility model.

Be described in further detail below in conjunction with the technical characterictic of accompanying drawing most preferred embodiment of the present utility model.

A kind of mainly by the box body (1) that is fixed on that substrate (2), a side that door-plate (25) upper periphery has begin to speak (18) are hinged on the substrate and can closely fasten with substrate by beginning to speak, be arranged on the substrate and can insert the lock bridge (9) in the box body and be installed in the door lock protective device that the combination padlock (15) of dead bolt (14) insertion lock bridge can be formed box body cover plate (20) on.

With the corresponding substrate of door lock core on offer key hole (19), pick-proof switch (8) and the electronic audio alarm (4) that is electrically connected with the pick-proof switch are set in box body.

The pick-proof switch is by being arranged on the static contact (24) on the substrate and can pressing the moving contact (23) on the static contact and be arranged in the substrate through-hole and the movable contact crown can be formed from the limited post (22) of static contact in above-mentioned.When substrate was prized from door-plate a little, dynamic and static contact got final product closed and sends alarm signal like this.

For being prized under the situation of substrate at box body, the utility model sends alarm signal, in box body, be provided with one and be connected in series the back with the self-lock switch (12) of dead bolt interlock with self-lock switch and insert box body pick-proof switch (16) in the electronic audio alarm, wherein this box body pick-proof switch by go up at the base plate (21) of box body the stationary contact (28) that is provided with can press the movable contact (27) of stationary contact and be arranged on the substrate and on by base plate through hole the movable contact top is formed from the feeler lever (26) of stationary contact.

Consider, under the darker condition of light,, the illuminating lamp (17) that is subjected to switch (11) control is set in box body for the ease of seeing the number on the combination padlock clearly.

In order to strengthen the pick-proof effect of box body, the column (6) that can insert in the box body is set at the substrate edges place.

In the present embodiment: open combination padlock in order to deal with the robber with digital compound mode, on the disk of combination padlock, offer the less induction port of the degree of depth (7).The electronic audio alarm is made up of news sound piece (3), power supply (5), loudspeaker (13), alarm release switch (10).And touching by point of alarm release switch be arranged in the box body of substrate, touch by point by the tap operation on the box plate.

Claims (4)

1, a kind of mainly by the box body (1) that is fixed on that substrate (2), a side that door-plate (25) upper periphery has begin to speak (18) are hinged on the substrate and can closely fasten with substrate by beginning to speak, be arranged on the substrate and can insert the lock bridge (9) in the box body and be installed in the door lock protective device that the combination padlock (15) of dead bolt (14) insertion lock bridge can be formed box body cover plate (20) on; it is characterized in that with the corresponding substrate of door lock core on offer key hole (19), pick-proof switch (8) and the electronic audio alarm (4) that is electrically connected with the pick-proof switch are set in box body.

2, door lock protective device according to claim 1 is characterized in that the pick-proof switch is by being arranged on the static contact (24) on the substrate and can pressing the moving contact (23) on the static contact and be arranged in the substrate through-hole and the movable contact crown can be formed from the limited post (22) of static contact.

3, door lock protective device according to claim 1; it is characterized in that in box body, being provided with one and be connected in series the back with the self-lock switch (12) of dead bolt interlock with self-lock switch and insert box body pick-proof switch (16) in the electronic audio alarm, wherein this box body pick-proof switch by go up at the base plate (21) of box body the stationary contact (28) that is provided with can press the movable contact (27) of stationary contact and be arranged on the substrate and on by base plate through hole the movable contact top is formed from the feeler lever (26) of stationary contact.

4, door lock protective device according to claim 1 is characterized in that in the edge of substrate the column that can insert in the box body being set.

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