U.S. patent number 3,803,575 [Application Number 05/220,012] was granted by the patent office on 1974-04-09 for device for setting-up a power source of electrical alarm.
Invention is credited to Motohiro Gotanda.
United States Patent |
3,803,575 |
Gotanda |
April 9, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
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.
Inventors: |
Gotanda; Motohiro (Tokyo,
JA) |
Family
ID: |
26341696 |
Appl.
No.: |
05/220,012 |
Filed: |
January 24, 1972 |
Foreign Application Priority Data
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Feb 15, 1971 [JA] |
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46-7410 |
Jun 25, 1971 [JA] |
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46-54457 |
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Current U.S.
Class: |
340/522;
340/545.9; 200/61.64; 292/DIG.65; 340/542 |
Current CPC
Class: |
E05B
45/083 (20130101); G08B 13/08 (20130101); Y10S
292/65 (20130101) |
Current International
Class: |
G08B
13/02 (20060101); G08B 13/08 (20060101); E05B
45/00 (20060101); E05B 45/08 (20060101); E05B
45/06 (20060101); G08b 013/08 () |
Field of
Search: |
;340/274,276,256
;70/432,439,418,422,1.5,DIG.49,DIG.50 ;109/41,43,44
;200/61.64,61.67 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Caldwell; John W.
Assistant Examiner: Partridge; Scott F.
Attorney, Agent or Firm: Larson, Taylor & Hinds
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.
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.
* * * * *