JPS648398B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a security receiver. Crime prevention receivers that receive signals from intruder sensors and issue alarms are generally installed in guardhouses or other places indoors where people are present, and switches for turning on and off alarm systems are conventional crime prevention devices. It was provided on the surface of the receiver cover, etc. Therefore, it is extremely easy and careless for an intruder to turn off the switch when no one is present in the place where the security receiver is installed. Therefore, in order to eliminate this problem, it is possible to install the aforementioned switch inside the security receiver and lock the cover, which is the door of the security receiver, but in such a case,
Not only is there the risk of forgetting to turn on the alarm system and locking it, leaving the door unattended, but also the on/off status of the switch cannot be seen from the outside, making it easy to forget to turn it on. The problem is that you don't notice it.

The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to be able to perform double locking mechanically and electrically with a single locking operation, and also to provide a double locking mechanism for turning the lock on and off. To provide a crime prevention receiver that can prevent forgetting to turn on the switch, has a simple configuration, does not require much space, and is inexpensive in terms of cost.A crime prevention receiver that also has a reliable mechanical lock. is to provide.
The present invention will be explained below with reference to embodiment figures. FIG. 1 shows an overall perspective view of one embodiment, in which a metal box 1 has a metal cover 2 attached to its upper opening so that it can be opened and closed with a hinge 3, and a middle frame 4 is placed inside the box 1. Fixed. The middle frame 4 is used to attach the alarm display circuit section 6, the power supply circuit section 5, etc., and to store these circuits 5 and 6 in the box 1. The box 1 is placed on the top surface of the periphery and fixed by welding or the like in a state in which it is suspended from the box 1, and the above-mentioned alarm display circuit section 6 and the power supply circuit are mounted on the bottom part located slightly above the bottom wall of the box 1. A printed circuit board 7 on which the section 5 is wired is mounted. Further, a hinge 3 to which the cover 2 is pivotally attached is provided on the upper surface of the side periphery of the middle frame 4, and a horizontally long slit 8 is provided in the upper part of the side wall of the middle frame 4 on the opposite side of the hinge 3. The cover 2 is formed into a shallow dish shape with a concave portion on the lower surface side, and has a rectangular window hole 9 in the center, and a panel plate 10 is welded to cover the window hole 9 from the inside. It is set up. The panel board 10 holds a printed circuit board 12 at a certain distance from the surface of the panel board 10 with a spacer 11, and a display consisting of a light emitting diode 13 for alarm display and a light emitting diode for power display mounted on this printed circuit board 12. Elements, etc. are attached. In addition, the panel plate 1 at the end of the array side of these display elements, etc.
0 is provided with a lock 14 for fixing the state in which the cover 2 is attached to the box 1, and the lock 14 has a cylindrical body 14a arranged on the back side of the panel board 10 and a key for inserting a key. Insertion hole 14c
The disk body 14b provided with is arranged on the surface of the panel board 10, and the cylinder body 14a and the disk body 14b are integrally connected by a shaft portion penetrating the panel board 10 from the front and back, so that the disk body 14b is rotatably connected to the panel board 10. It is pivoted, and by inserting a key into the key insertion hole 14c and rotating it, the cylindrical body 14a can be rotated to unlock and close it from the front side of the panel board 10. . The lever 15 has one end fixed to the cylindrical body 14b, and when the lock 14 is in the closed position, the other end is formed into a horizontally elongated hole 17 that is bored into a vertical plate 16 that is bent and formed integrally with the back side end of the panel board 10. When the lock 14 is in the unlocked position, it is arranged parallel to the vertical plate 16. Vertical board 1
The horizontally elongated holes 17 at 6 are for reinforcing the panel plate 10 so that it will not be deformed by force when an upward force is applied to the lock 14. switch 18
is a switch for controlling the output of the power supply circuit section 5, and is constructed by connecting two small switches 18a and 18b in parallel. The small switches 18a and 18b are arranged in parallel on the side of the tip of an L-shaped plate 19 attached parallel to the L-shaped plate 16, and each actuator 20 is arranged on the panel plate 10 side, and the actuator 20 is connected to the lever. When the lever 15 is rotated by closing the lock 14, it is pushed by the surface of the lever 15, turning on both small switches 18a and 18b, and turning on the switch 18. Of course, the number of small switches 18a and 18b may be one.

When the cover 2 is rotated by the hinge 3 from the open state shown in FIG. 2 to the closed state shown in FIG. and place it on the upper surface of the periphery of the box 1 as shown in FIG. At this time, the lock 14 is in the unlocked state, so the lever 15 is in the position indicated by the chain line in FIG. 3, and the tip of the lever 15 is located below the panel board 10. In addition, the horizontally elongated hole 17 of the vertical plate 16 is connected to the middle frame 4.
This will be parallel to the slit 8. Now, when the key is inserted into the key insertion hole 14c of the lock 14 and rotated counterclockwise in FIG. The lever 15 rotates, and the tip of the lever 15 is inserted into the horizontally long hole 17 of the upright plate 16 and protrudes to the side.
When the lever 15 is rotated to the closed position, the tip of the lever 15 passes through the slit 8 of the middle frame 4 and engages with the middle frame 4 as shown in FIG. Therefore, the cover 2 is fixed to the box 1, and the lock 14 is locked.
It will not be possible to close the door without unlocking it. Further, the lower surface of the lever 15 turns on the actuators 20 of the small switches 18a and 18b by closing the lock. As a result of this ON drive, the output of the power supply circuit section 5 shown in FIG. 5 is supplied to the warning display circuit section 6 and the external intruder sensor 21, resulting in a so-called warning state. 22 in the figure is a lock screw, and this lock screw 22 connects cover 2 to box 1.
This is to ensure that it is firmly adhered to and fixed to the surface. Also 2
3 is a sound hole.

Next, the workings of the security receiver will be explained with reference to FIG. The power supply circuit section 5 includes a rectifier circuit 23, a constant voltage circuit 24, and a battery 26 for securing power during a power outage of the commercial power source E, and has an input end connected to the commercial power source E via a power switch 27. However, the output end is connected to the alarm display circuit section 6 and the external intruder sensor 21 via a switch 18, and when the switch 18 is turned on, it functions as a warning system. . Of course, the power switch 27 is always turned on and is installed inside the box 1. The alarm display circuit section 6 includes an oscillation circuit 29 for lighting up the buzzer 28 and the alarm display light emitting diode 13, and a control circuit 30 for driving and controlling the oscillation circuit 29 based on the detection signal of the intruder sensor 21. For example, the detection switch 21a of the intruder sensor 21 consisting of a photoelectric sensor
When turned on, the control circuit 30 operates to drive the oscillation circuit 29 and use the output of the oscillation circuit 29 to decrement only the alarm display light emitting diode 13, or connect the buzzer 28 to the circuit via the selection switch 31. The display light emitting diode 13 blinks and the buzzer 28 sounds to notify the presence of an intruder.
Relay Ry operates when there is a power output, that is, when switch 18 is turned on, to close contact r and drive an external warning display load. 32, 33, and 34 are external connection terminals for connecting the intruder sensor 21.

7 to 9 are views showing another embodiment of the present invention, in which a lever drive piece 3 is fixed to a cylindrical body 14a of a lock 14 at a position slightly offset to one side from the center.
5, the lever driving piece 35 is located in the same longitudinal direction as the longitudinal direction of the panel board 10 when the lock 14 is in the unlocked position, and is perpendicular to the longitudinal direction of the panel board 10 when the lock 14 is in the closed position. The longitudinal direction is located in the direction of The levers 15 and 1 are placed at substantially the same positions on both sides of the center of rotation of the lever drive piece 35.
One end of the lever 5 is rotatably supported by pins 36, 36, and these levers 15,
The other end of 15 is connected to the vertical piece 1 provided on both sides of the panel board 10 when the lock 14 is in the closed position as shown in FIG.
The horizontally elongated holes 17, 17 of 6, 16 are penetrated from the inside toward the outside, and the tips thereof protrude to the outside of the vertical pieces 16, 16. When the cover 2 is closed to the box 1 and the lock 14 is set to the unlocked position, the horizontal holes 17, 17 of the upright plates 16, 16 can be opened as shown by the chain lines in FIG. The protruding amount of the tips of the levers 15, 15 is small, and the tips of the levers 15, 15 protrude beyond the periphery of the top opening of the box 1 toward the opening, from the inner edge of the inner frame 4 toward the center of the opening. position, lever 15, 15
is not engaged with the middle frame 4 of box 1, and at this time, the cover 2 can freely fit into box 1.
It can be developed for Also L
The actuators 20 of the small switches 18a and 18b constituting the switch 18 provided on the character-shaped plate 19 do not receive any external force, and each small switch 18
a and 18b are in an off state. Next, when the lock 14 is rotated counterclockwise in FIG. 8 using the key and set to the closed position shown by the solid line, the amount of protrusion of the tips of the levers 15, 15 increases,
As shown in FIG. 9, the cover 2 is inserted into the inner lower part of the middle frame 4, and the levers 15, 15 engage with the middle frame 4 to fix the cover 2 to the box 1. At this time, the tip of the lever drive piece 35 presses and drives the actuator 20 of the small switches 18a and 18b, so that the switch 18
is turned on, the output of the power supply circuit section 5 is supplied to the alarm display circuit section 6 and the external intruder sensor 21, and the alarm is activated. When the lock 14 is returned to the unlocked state from this closed state, the lever drive piece 35 returns to the position shown in chain lines in FIG. Then, the switch 18 is turned off and the alarm is turned off.

In the present invention, a lock is attached to the cover to be unlocked and closed using a key, and the tip of the lock disengages and engages with a box in conjunction with the unlocking and closing of the lock, and power is supplied to the circuit when the lock is in the closed state. There is a lever inside the cover that turns on the switch that connects the box, so a single lock operation will engage the box and the lever on the cover side, fixing the cover to the box. In addition, when the lock is closed, you can use the lever to turn on the switch to connect the power to the circuit.Furthermore, the power cannot be turned off unless the cover is removed, and the lever and box are not connected. The lock is mechanically locked and electrically locked. These double locks prevent interference by intruders, and the switch is automatically turned on at the same time as the lock is closed. This has the effect of ensuring that you don't forget to put your guard on.
Furthermore, since the structure is simple, the cost is low.

Furthermore, a lever driving piece that rotates in conjunction with the unlocking and closing of the lock is provided inside the cover, and one end of the lever is rotatably supported on both sides of the rotation center of the lever driving piece, and each By engaging the free end of the lever with both sides of the box in the locked state, the engagement between the box and the cover can be made even stronger and more reliable.
This has the effect of being effective against destruction by intruders.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of one embodiment of the present invention, and FIG.
The figure is a side sectional view of the same as the above, Fig. 3 is an enlarged perspective view of the same with the same partially omitted and cut away, Fig. 4 is a partially omitted side sectional view of the same with the same as the locked state, and Fig. 5 is used for the same as the above switch. FIG. 6 is an enlarged perspective view of the small switch; FIG. 6 is an electric circuit diagram of the same as above; FIG. , FIG. 9 is a cross-sectional view of the same as above in the closed state, where 1 is the box, 2 is the cover, 4 is the middle frame, 5 is the power supply circuit section, 6 is the alarm display circuit section, 4 is the lock, and 15 is the lever. , 18 is a switch.

Claims (1)

[Claims] 1. A security receiver comprising a box incorporating at least a power supply circuit section and an alarm display circuit section, and a cover covering the box, in which a lock is provided on the cover to be unlocked/unlocked with a key. A lever is provided on the inside of the cover, the tip of which disengages and engages the box in conjunction with the unlocking and closing of the lock, and turns on a switch that connects power to the circuit when the lock is in the closed state. Features a security receiver. 2. In a security receiver consisting of a box containing at least a power supply circuit section and an alarm display circuit section, and a cover that covers the box, a lock that can be unlocked and unlocked with a key is attached to the cover, and A lever driving piece that rotates in conjunction with unlocking and closing is provided inside the cover, one end of the lever is rotatably supported on both sides of the rotation center of the lever driving piece, and the free end of each lever is provided. A security receiver characterized in that a lever drive piece is used to turn on a switch that engages on both sides of a box when the lock is in the closed state and connects a power source to the circuit when the lock is in the closed state.