Device For Setting-up A Power Source Of Electrical Alarm

Abstract

This invention relates to a power source setup device for alarm means in a room or a building comprising a main door and secondary doors or windows, said main door and secondary doors or windows respectively having door switches, said main door including a fixing board attached to poles and walls of said door and a locking mechanism having a lock member fixed to said door and engageable by key to a hole on said fixing board, a lock switch on said fixing board to set ON or OFF a power source for all circuits of the alarm means, wherein said lock member moves into or from the hole of the fixing board and thereby the lock switch is operated, and a breaking conductor is incorporated at a location on the outdoor side of the main door and in front of a lock switch to set up a power source, said breaking conductor being adapted to break by external force so as to prevent the alarm means from being destroyed by intruder and to issue an alarm signal.

Description

This invention relates to a device for actuating the power source of an electrical alarm system and, more particularly includes means for automatically actuating the power source of an electrical alarm circuit comprising sensing switches mounted on all doors or windows in a room or a building. It is designed that when the main door is locked all switches on the main door and other doors or windows may be electrically set ON. The device is usually mounted on locking doors in rooms or a building for safety purposes, preferably in combination with a circuit connected breaking conductor for protecting the locking means. The breaking conductor is adapted to be easily destroyed to set off an alarm when a person should open the door to enter the room.

BACKGROUND OF THE INVENTION

Varieties of electrical alarm devices have been proposed for avoidance of accidents and for safety especially in compartment rooms of a building. In such devices, the man would switch on the power source when he leaves the room and then fasten the lock of a door from outside. When he would set on the power source inside the room and thereafter leave the room, he is previously needed to open terminal switches usually provided on the door, by opening or closing of which the terminal switches are actuated, whereby he must permit the alarm devices to unexpectedly operate and issue an alarm signal. So as to avoid such undesirable operation, the switches for setting ON or OFF the power source of alarm devices are located conventionally through wiring on the outside of a room or building, preferably in a place out of heed or access of other persons, or such switch for power source may be kept in a keyed box. Thus, in a building having a great number of rooms, the power source switches are usually equipped collectively in the keeper's room.

However, the arrangement is useless if the room keeper should fail to set ON the power source of alarm devices even if all doors of the building or room have been locked, then the alarm device will not be set ON to meet the accident.

It has frequently occurred in the conventional alarm devices that when the alarm device has been set ON in the room, the keeper would enter the room without setting OFF the power source switch located on the outside of the room, open the door, and suddenly get an alarm, so that he or other persons will erroneously take it for an emergency alarm. In other times, an intruder may raid the room while the room keeper is absent, cut off the wirings for alarm devices prepared on the outside of the room or destroy the power source switch to make it run out of operation so that the intruder may break into the room.

SUMMARY OF THE INVENTION

The invention provides a device for setting up a power source of alarm devices being equipped in a number of rooms of a building or in buildings.

Therefore, a primary object of the invention is to provide a power source setup device for alarm devices equipped in many rooms or buildings, wherein as a main door of a room or building is locked, simultaneously a power source for all alarm devices is set ON for electrical operation of alarm.

Another object of the invention is to provide a power source setup device for alarm devices equipped in rooms or buildings, wherein a power source for all alarm devices is set ON for electrical operation simultaneously as a main door of a room or building is locked up when a man leaves from the room or building so that he may not fail to set ON the power source of alarm devices.

A still another object of the invention is to provide a power source setup device for alarm devices, wherein as a man arrives from outside to unlock the door with key, the power source of the alarm device is set OFF with certainty so that the alarm device will not operate undesirably.

A further object of the invention is to provide a power source setup device for alarm devices, wherein a breaking conductor is incorporated in assembly on the outdoor side in the power source setup device for alarm devices, said breaking conductor being readily breakable before the power source setup device is wrongfully broken by intruder whereby an alarm is directly issued.

These and other features and objects are achieved by means of all mechanisms of parts, electrical circuit and operation of the present invention, the embodiments of which are illustrated by way of example with reference to the accompanying drawings and specification as described in details below.

Throughout the specification, modifications and variations in the details of the invention are implied to come all in the scope of the claims as later described.

Thus, the power source setup device for alarm devices according to the present invention intends to provide a power source setup device for alarm devices of a construction designed so as to effeciently operate and automatically operate the power source of electrical alarm devices provided at all entrances or exits, or windows of a building or of a room in the building, wherein as a main door is locked all switches on the main door and other doors or windows are ellectrically set ON, and wherein a breaking conductor is properly incorporated in assembly in the circuit on the outdoor side of the power source setup device of the main door. The described breaking conductor is readily breakable by intruder from outside and serves to directly issue an alarm signal for accident.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view of a main door and other doors respectively used for entrance and exit of persons, location of switches, and wirings of the power source setup device for alarm devices according to the present invention;

FIG. 2 is a front view of a conventional door with a door operating and locking mechanism provided in a corresponding position of the abovementioned door;

FIG. 3 is an essential circuit diagram of a power source setup device for alarm devices of the invention;

FIG. 4 is a vertical sectional view of a door operating and locking mechanism of the invention as provided on the side of poles and walls of the main door;

FIG. 5 is a view illustrating the pushing operation of a member of a lock switch during locking operation;

FIG. 6 is a side elevation of a casing of the mechanism shown in FIG. 4, a part of the casing being shown in a cross section;

FIG. 7 is a side elevation of a fixing board in the mechanism shown in FIG. 4;

FIG. 8 is a view of an embodiment, wherein the door switches are provided respectively in the upper part of other doors, the view being taken from inside the room;

FIG. 9 is a view illustrating a mechanism by which an operating member of the door switch is removed when the door of FIG. 8 is opened and the switch is set OFF, the view showing the door as seen from above on the drawing;

FIG. 10 is a perspective view of another embodiment of a door operating and locking mechanism, showing a lead switch and a breaking conductor provided on a fixing board and a locking member with magnet;

FIG. 11 is another embodiment of the mechanism of FIG. 10, wherein a casing is provided on the side of the fixing board which is further attached with the lead switch and breaking conductor;

FIG. 12 is another embodiment of the mechanism of FIG. 10, wherein the fixing board is attached with the lead switch and breaking conductor;

FIG. 13 is an enlarged perspective view of the mechanism of FIG. 12 showing its cross section taken along the line XIII--XIII of FIG. 12.

DESCRIPTION OF THE PREFERRED EMBODIMENT

A compartment room of a building, as shown generally in FIG. 1, comprises a main door 1, a secondary door, and a window 2. The main door 1 has a lock switch SW.sub.1 provided on the poles or walls 3 of the door. The secondary door and window 2 are respectively provided with door switches SW.sub.2 at preferred places on the walls. The door switch SW.sub.2 can be located in any adequate position about the main door 1, for example, at the upper part thereof. FIG. 1 shows all the doors being closed with the door switch SW.sub.2 being set ON and the lock switch SW.sub.1 of the main door 1 set OFF, that is, the door not being locked up.

The main door 1 has a handle 4 to open or close the door and a key means 5 attached to a lock. The described door operating and key means are shown in FIG. 2 indicating that the main door 1, poles or walls 3 are provided in unit same as in the conventional door operating and key means. Furthermore, the main door comprises an engageable member or latch bolt 7 movable by rotation of a shaft 6 of the handle 4 and a lock member or dead bolt 8 advancing into or receding from a hole 11 with a key. The latch bolt 7 engages or disengages the hole 10. The hole 11 is provided at the lower part of the fixing board or mounting plate 9, through which the dead bolt 8 enters or recedes for engagement with the hole 11.

The above construction generally concerns with the conventional mechanism of alarm devices.

In accordance with the present invention, the setting of power source in the electrical alarm devices can be achieved by means of the dead bolt 8 which serves as a lock member for key mechanism to fasten the conventional door as above described.

The essential circuit construction of the invention will now be illustrated with reference to FIG. 3. The circuit employed for the object of the invention consists of a power source E, switch means SW, and an alarm A. The switch means SW comprises a lock switch SW.sub.1 disposed on the main door to be set ON or OFF by dead bolt 8 with a key; a switch SW.sub.2 disposed at a preferred place about the main door 1 or second door or window 2, and a breaking conductor BC adjacent to those switches SW.sub.1 and SW.sub.2. The alarm device A on the other hand comprises a coil C.sub.o, a relay Ry including a movable contact member C.sub.1 and a fixed contact member C.sub.2, and a buzzer Bz, or the like.

The circuit of the above construction will operate as follows.

Switch SW.sub.2 can be set ON or OFF at every opening or closing of the door 1 or window 2 as shown in FIG. 1. However, the lock switch SW.sub.1 is not ON unless the door 1 is locked by dead bolt 8, so that although the door switch SW.sub.2 is closed, the buzzer Bz of the alarm device A will not start operation. As soon as the dead bolt 8 protrudes as the device is locked the lock switch SW.sub.1 is set ON. If second and other doors and windows are closed and their switches SW.sub.2 are ON, a current flows in the coil C.sub.o of the relay Ry. The contact member C.sub.1 is pulled on to the coil side C.sub.o and released of contact from the fixed contact member C.sub.2. In this way, when the main door 1 is locked, the power source of the alarm device A is entered but the buzzer Bz will not operate. If anyone should unexpectedly open the door with a door switch SW.sub.2 provided thereon or forcibly open the main door 1 for wrongful intrusion and thereby cutting off the breaking conductor BC, it would result that the door switch SW.sub.2 is opened or the breaking conductor BC provided on the outdoor side of the main door 1 is broken is broken. In consequence, the circuit is cut off and the coil C.sub.o is deenergized. The movable contact member C.sub.1 and the fixed contact member C.sub.2 will make contact thereby causing the buzzer Bz to operate.

In this circuit, if one of the doors or windows is left opened when locking has been made, the buzzer Bz will operate and give a notice to person that all the doors and windows are not completely closed.

FIG. 4 shows a part of the lock switch SW.sub.1 among components used in the electrical circuit of FIG. 3. Therein, the lock switch SW.sub.1 provided in the main door 1 is attached on the back side of the fixing board 9. In this construction, a generally used microswitch is employed. The lock switch SW.sub.1 is provided with an operating member L.sub.1 made of resilient material. As the dead bolt 8 is entered into the hole 11 at the lower part of the fixing board 9, the operating member L.sub.1 is pushed and this pushes the operating member LW.sub.1 of the lock switch SW.sub.1 then setting the lock switch ON.

FIG. 6, together with FIG. 4, illustrates the breaking conductor BC provided in the casing or cover member 12 attached to a side of the fixing board 9, in which the right side indicates the outside of the room. FIG. 7, together with FIG. 4, illustrates the attachement of the lock switch SW.sub.1 to the fixing board 9. The drawings illustrate that the breaking conductor BC is provided on the outside of the lock switch SW.sub.1, i.e., outside the room.

The breaking conductor BC attached to the casing 12 as described above normally consists of a material such as glass, porcelain or plastic film, which may be coated with an electrically conductive film having electric conductivity produced by surface electroplating or sputtering, or otherwise an electro-conductive material which is readily breakable itself by external force or destroyable to be adapted for cutting off the circuit. The breaking conductor is provided such that when the casing 12 is deformed by external force the circuit is directly cut off.

Embodiments of FIGS. 8 and 9 have each a door switch SW.sub.2 located in a preferred place on the second door 2, in which the operating member L.sub.2 is provided in projection in an appropriate position of the room and, when the door is closed, the member L.sub.2 is compressed to actuate the operating rod L.sub.w2 of the door switch SW.sub.2 so as to set the door switch SW.sub.2 ON. In this embodiment, FIG. 8 is a view as seen from the inside of the room. In FIG. 9, the upper part of the figure denotes the inside of the room. The therein used switch may be a micro-switch, non-contact switch or any other type of switch as the case may require.

In FIG. 10 is shown a reed switch RS as lock switch SW.sub.1 provided inside the room and near the lower hole 11 of the fixing board 9 and the breaking conductor BC on the outside of the room. One dead bolt 8 is attached with a permanent magnet M which dead bolt moves back and forth through the hole 11 at the lower part of the fixing board 9 and thereby the lead switch RS is set ON or OFF.

FIG. 11 is an embodiment in which the lower hole 11 of the fixing board 9 is covered with a case or C and the lead switch RS is provided on the inside of the room while the breaking conductor BC is fixed on the outside of the room, whereby even when the tip end of the dead bolt 8 is skillfully cut off from outside by wrong person, the cut-off portion may be left in the casing C so that the reed switch RS can yet retain the ON-position while the power source may not be cut off.

FIG. 12 illustrates an embodiment, in which the reed switch RS portion is fitted to a lateral slot H on the inside of the room about the hole 11 provided lower on the fixing board 9 and the breaking conductor BC to other lateral slot H' both by the adhesive and these are electrically connected.

FIG. 13 shows a cross section taken along the line XIII--XIII of FIG. 12, which particularly shows the way of attachment of the breaking conductor BC and lead switch RS.

As illustrated in the above drawing, the breaking conductor BC is insulatedly fixed to the fixing board 9 and the casing 12 in the rear part thereof and also the same conductor is provided on the outside of the lock switch SW.sub.1 or on the outside of the room such that before the lock switch SW.sub.1 is broken the breaking conductor BC may surely be broken. As a consequence, when the breaking conductor BC is broken or destroyed by external force, the circuit is cut off and the buzzer is caused to operate.

According to the invention, there is provided a lock switch having the breaking conductor on the outdoor side, on the side of poles and walls of the door in the main doorway among many doorways and windows of the room or building, the lock switch being used for switching ON or OFF the power source of the alarm device having a breaking conductor. As the lock member or dead bolt in the door engages a hole on the fixing board fitted to poles and walls of the door, the lock switch is set ON, whereby locking of the main door of each room will make the power source of the alarm devices to set ON within range of control of the controller. Therefore, the power source is automatically entered by locking in such way as described. The construction will avoid the failure of issuance of alarm upon emergency as it occurs from entering the power source of the alarm device in absence or during rest of the controller. Also, the trouble to set up the power source of the alarm device separately after locking of the door can be avoided.

When the main door is opened, the lock member is moved back to initial position and the power source is cut off.

Then the alarm device does not operate so that the controller can confirm the power source being surely cut off. Thus, he will not fail to cut off the power source before he opens the door as he enters the room although he often forget it when he uses a conventional devices. Nor the door will be opened issuing an alarm erroneously.

Therefore, there is achieved a desired power source setup device for alarm devices which enables to lock a door from inside for the sake of safety when he stays at home. The controller then can prevent the entry of a intruder from outside. It is possible for him to issue an emergency alarm by setting a terminal of the alarm device OFF when he is in the room and feels a danger from outside.

The particular effect of the device is that it can enter the power source of alarm device by locking the door. The conventional door may be modified for use adaptable for the present invention. Its effect may have a great value for the buildings which are becoming much higher and larger recently having a large number of rooms as well as for safekeeping of the rooms of those buildings.

Claims

1. A power source control system for electrical alarm means, including a plurality of circuits, located in a room or building including a main door and at least one secondary access unit such as a secondary door or window, said system comprising a power source for the circuits of said alarm means, first, door switches, connected to said power source and associated with the main door and said at least one secondary access unit for energizing said alarm means when actuated responsive to opening of the associated access unit, mounting means associated with said main door and defining an aperture therein, a locking mechanism including a movable, key-actuated locking bolt which, when actuated, enters into said aperture in said mounting means, a second, lock switch, mounted on said mounting means and actuated responsive to said locking bolt entering said aperture in said mounting means, for controlling energizing and de-energizing of said power source for the circuits of said alarm means, and a breaking conductor, associated with said lock switch at a location outside of said main door and connected to said alarm means so that, when said breaking conductor is broken, said alarm means is energized, for preventing tampering with said lock switch without said alarm means being energized, said mounting means comprising a mounting plate affixed to the main door frame and said lock switch comprising a reed switch located on the indoor side of said mounting plate, said breaking conductor being located on the outdoor side of said mounting plate and said locking bolt including a magnetic portion for magnetically controlling the actuation of said reed

2. A power source control system for electrical alarm means, including a plurality of circuits, located in a room or building including a main door and at least one secondary access unit such as a secondary door or window, said system comprising a power source for the circuits of said alarm means, first, door switches, connected to said power source and associated with the main door and said at least one secondary access unit for energizing said alarm means when actuated responsive to opening of the associated access unit, mounting means associated with said main door and defining an aperture therein, a locking mechanism including a movable, key-actuated locking bolt which, when actuated, enters into said aperture in said mounting means, a second, lock switch, mounted on said mounting means and actuated responsive to said locking bolt entering said aperture in said mounting means, for controlling energizing and de-energizing of said power source for the circuits of said alarm means, and a breaking conductor, associated with said lock switch at a location outside of said main door and connected to said alarm means so that, when said breaking conductor is broken, said alarm means is energized, for preventing tampering with said lock switch without said alarm means being energized, said mounting means comprising a casing member mounted on the main door frame adjacent the aperture into which said locking bolt extends and shaped to receive said locking bolt therein, said lock switch comprising a reed switch mounted on the indoor side wall of said casing member and said breaking conductor being mounted on the outdoor side wall of said casing member, said locking bolt including a magnetic portion for magnetically controlling actuation of said reed switch.