JPH0323643Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention aims to automatically cut off power supply circuits in the house that are not regularly used when going out, thereby saving power and preventing electrical leakage. The present invention relates to a power cutoff device.

[Conventional technology]

Conventional electrical wiring in homes and offices has a structure in which electricity is supplied to each electrical device from a power outlet, through an earth leakage breaker, etc., and through a plug outlet installed on the ceiling or wall. .

When you go out, turn off the switches attached to each electrical device that you are not using, or
Alternatively, electricity is cut off by unplugging the plug attached to the tip of each electrical device from the outlet, thereby saving power and preventing electrical leakage.

[Problem that the invention attempts to solve]

However, since the power supply part of each household outlet is usually connected to a power supply part with the same wiring, it is necessary to make sure that electricity is not being supplied to electrical devices that are not needed when you go out. However, there was a problem in that it required a lot of effort when there were a large number of electrical devices.

At this point, it may be possible to operate the circuit breaker installed at the power supply source in each household to shut off all power sources before going out, but depending on the electrical equipment, refrigerators, clocks, etc. There are some devices that require a constant supply of electricity, such as, and therefore it is not possible to operate the circuit breaker that shuts off the power to all devices.

Therefore, if you forget to turn off the power to electrical equipment when you go out, there is a problem in that not only is electricity wasted, but it may also cause a fire.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power cutoff device for when going out, which can cut off unused power when going out.

[Means to solve problems]

The power cutoff device when going out according to the present invention in accordance with the above purpose divides the power supply circuit into a circuit that is always used and a circuit that is not always used, a switch is attached to the circuit that is not always used, and a switch is installed on the door of the entrance. In addition to installing a switch that detects whether the door is locked only from the outside, a selection switch is also provided to select whether or not to use the power cutoff device when going out, and when the selection switch is turned on, the locked state of the door is detected. When the switch is operated, the switch is operated, and circuits that are not normally used are cut off.

Here, the switch that shuts off the circuit that is not always used may be one that turns on and off all the connection cords that supply power, or one that turns on and off only one side of the connection cord.

It is also possible to provide a lamp to the power supply circuit connected to the selection switch to confirm its operation.

[Effect]

The power cutoff device when going out according to the present invention divides the power supply circuit into a circuit that is always used and a circuit that is not always used, and a switch is attached to the circuit that is not always used, and a selection switch is installed to ensure that the circuit is turned on. As a condition, the switch that operates when the door is turned from the outside is activated, and the above-mentioned switch is activated. Therefore, by locking the door from the outside, switches connected to circuits that are not always used can be shut off, and electricity for kotatsu and lighting that are connected to circuits that are not always used can be shut off. It becomes possible to turn off the power of

〔Example〕

Next, an embodiment embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

Here, Fig. 1 is a circuit configuration diagram of a power cutoff device when going out according to an embodiment of the present invention, and Fig. 2 is a side view of a locking mechanism of a door on which the power cutoff device when going out according to the above embodiment is installed. 3 to 7 are side views showing the state of use of the locking mechanism in the door installed with the power cutoff device when going out according to the above embodiment,
FIG. 8 is a circuit wiring diagram of a power supply device when going out according to another embodiment of the present invention, and FIG. 9 is a side view of a locking mechanism of a door equipped with a power cutoff device when going out according to the other embodiment described above. , FIG. 10 is a side view of a striker portion of a door equipped with a power cutoff device when going out according to the other embodiment described above.

As shown in FIG. 1, the circuit configuration of a power cutoff device 10 when going out according to an embodiment of the present invention is such that the power supply on the input side connected via a circuit breaker 11 such as an earth leakage breaker is connected to a clock, for example. The circuit wiring 12 is divided into the circuit wiring 12 that is connected to a refrigerator, etc., and the circuit wiring 13 that is not always used, and the circuit wiring 13 is connected to an electric kettle, an iron, a hair dryer, etc. A contact 14 of an electromagnetic switch is attached so that it can be cut off.

On the other hand, a step-down transformer 15 is connected to the input power source, and a selection switch 16, a switch 17 for detecting the locked state of the door, and an excitation coil 18 for operating the contacts of the electromagnetic switch are connected in series to the secondary side of the step-down transformer 15. has been done.

A lamp 19 is connected to the selection switch 16, and when the selection switch 16 is turned on, the lamp 19
The selection switch 16 is preferably installed inside the door that is closed when going out, and the lamp 19 is preferably placed near the selection switch 16. However, if necessary, a timer can be set. It may be replaced by a contact point.

In addition, switch 1 detects the locked state of the door.
7 is disposed inside the case 20 as shown in FIG. 2, and when it is in the on state, the excitation coil 18 of the electromagnetic switch operates and opens the contact 14 of the electromagnetic switch, so it is always on. Unused circuits 13 are cut off. In addition, in the off state, the excitation coil 18 of the electromagnetic switch does not operate, so the contact 14 of the electromagnetic switch remains connected, and the circuit 1 which is not normally used
3 is not blocked.

Also, as shown in Figure 2, from the outside, key 2
1, the door may be locked and unlocked from the inside using a thumb turn 22 that opens and closes the door.

Here, FIGS. 3 to 7, which are cross-sectional views showing the state in which the key mechanism is used, will be explained. The key 21 shown in FIG.
The protrusions 25 and 26 fixed to the metal fitting 24 rotate in the same manner as the key 21 moves. Further, the thumb turn 22 shown in FIG. 2 is located on the surface of the figure, and
It is connected to a metal fitting 28 via a rod 27 shown in FIG. Further, the protrusion 29 is fixed to the metal fitting 28. The metal fitting 28 is cylindrical and has an arcuate groove 30 in its cross section.
The central angle of the arcuate groove 30 is 240 degrees.
The metal fitting 24 is fixed to a metal fitting 31 having an arc-shaped cross section, and the central angle of the arc-shaped metal fitting 31 is 120 degrees.
The arc-shaped metal fitting 31 is fitted into the arc-shaped groove 30. The metal fitting 28 or the arc-shaped metal fitting 31 is
When rotating, it has a center angle of 120 degrees of play.
When the right end 32 of the arc-shaped metal fitting 31 is in contact with the metal fitting 28, when the arc-shaped metal fitting 31 is rotated clockwise, the metal fitting 28 simultaneously rotates clockwise, and the left end of the arc-shaped metal fitting 31 is rotated clockwise. When the arc-shaped metal fitting 31 is rotated to the left while the metal fitting 33 is in contact with the metal fitting 28, the metal fitting 28 is simultaneously rotated to the right. Further, when the left end portion 33 of the arc-shaped metal fitting 31 is in contact with the metal fitting 28, when the arc-shaped metal fitting 31 is rotated to the left, the metal fitting 28
8 rotates to the left at the same time. Also, switch 17
is located in a state where it can come into contact with the protrusions 25, 26, and 29, but is not always in contact with the inner cylinder 23. Furthermore, the fan shape located in the center of Figures 3 to 7 indicates the locked or unlocked state; if the lower left part is missing, it is in the locked state, and if the lower right part is missing, it is in the unlocked state. It indicates the condition.
Further, it is assumed that the key 21 is inserted and removed at the same place, and the arrow indicates the upper part of the key.

Furthermore, in the usage state of the locking mechanism, first, locking from the outside will be explained. FIG. 3 shows the locking mechanism in an unlocked state. In the state shown in Figure 3, key 21
Insert it from the back of the diagram, and rotate it 120 degrees to the right (from A to B) toward the diagram. In this case, the protrusions 25 and 26 are rotated 120 degrees to the right as explained above. Also,
Since the right end 32 of the arc-shaped metal fitting 31 is in contact with the metal fitting 28, the metal fitting 28 also rotates 120 degrees to the right, and the protrusion 29 fixed to the metal fitting 28 also rotates 120 degrees to the right, so as shown in FIG. state. This causes the protrusion 26 to activate the switch 17 that detects the locking of the door.
turns on, and the excitation coil 18 of the electromagnetic switch
is activated to open the contact 14 of the electromagnetic switch, and the circuit 13 that is not normally used is cut off. In addition, in FIG. 4, the arrow indicating the top of the key 21 is B.
Since the key 21 cannot be removed in this position, rotate the key 21 120 degrees to the left and remove the key 21. As a result, the protrusions 25 and 26 are also rotated 120 degrees to the left. The left end portion 33 of the arc-shaped metal fitting 31 is not in contact with the metal fitting 28;
Since it has a play of 120 degrees, the metal fitting 28 remains as it is, and the protrusion 2 fixed to the metal fitting 28
9 remains as it is, resulting in a state as shown in FIG. In this case, since the protrusion 29 does not touch the switch 17 that detects whether the door is locked, the circuit 13 that is not normally used remains cut off.

Next, when unlocking the lock from the outside, insert the key 21 from the back side of Fig. 5, which is locked from the outside, and turn to the left to unlock.
Rotate 120 degrees (from A to C). In this case, the protrusions 25, 26 are rotated 120 degrees to the left. Further, since the left end 33 of the arc-shaped metal fitting 31 is in contact with the metal fitting 28, the metal fitting 28 also rotates 120 degrees to the left, and furthermore, the protrusion 29 fixed to the metal fitting 28 also rotates 120 degrees to the left.
The state shown in FIG. 6 will be reached. As a result, the switch 17 by which the protrusion 29 detects the locking of the door is turned off, the excitation coil 18 of the electromagnetic switch is no longer activated, and the contact 14 of the electromagnetic switch is closed, so that it is not used at all times. Circuits 13 that do not do so are not cut off. Further, in FIG. 6, the arrow indicating the top of the key 21 is at position C, and the key 21 cannot be removed in this state. Therefore, the key 21 is rotated 120 degrees to the right and the key 21 is removed. As a result, the protrusions 25 and 26 are also rotated 120 degrees to the right. The right end 32 of the arc-shaped metal fitting 31 is not in contact with the metal fitting 28 and has a play of 120 degrees, so the metal fitting 28 remains as it is, and the protrusion 29 fixed to the metal fitting 28 also remains as it is. , so the third
It will look like the figure.

Thirdly, when unlocking the lock from the outside from the inside, the thumb turn 22 is used to unlock the door from the surface shown in FIG. 5, which is locked from the outside. The thumbturn 22 is connected to the metal fitting 28 via the rod 27, so when the thumbturn 22 is rotated 120 degrees to the left, the metal fitting 28 and the protrusion 29 fixed to the metal fitting 28 are simultaneously rotated 120 degrees to the left. . In addition, since the metal fitting 28 does not touch the right end 32 of the arc-shaped metal fitting 31 and has a play of 120 degrees, the arc-shaped metal fitting 31 remains as it is, and the metal fitting 24 and the protrusion 28
5 and 26 also remain in the same state, resulting in the state shown in FIG. The protrusion 29 turns off the switch 17 that detects the locking of the door, and the circuit 13 that is not always used is no longer cut off, as described above. In addition, when locking and unlocking from the inside, thumb turn 2
Since I am using 2, inserting and removing the key is not a problem.

Fourth, the case of locking from the inside will be explained. It is locked by the thumb turn 22 from the front surface of FIG. Rotate thumb turn 22 120 degrees to the right.
From the above explanation, the metal fitting 28 and the protrusion 29 fixed to the metal fitting 28 simultaneously rotate 120 degrees to the right. Further, the metal fitting 28 is connected to the left end portion 33 of the arc-shaped metal fitting 31.
Since it is not in contact and has a play of 120 degrees,
The arc-shaped metal fitting 31 remains as it is, and thus becomes as shown in FIG. The switch 17 remains in the off state, and the circuit 13, which is not normally used, remains unblocked.

Fifth, when unlocking from the inside, the thumb turn 22 is used to unlock the door from the surface shown in FIG. 7, which is in a locked state from the inside. Rotate thumb turn 22 120 degrees to the left. From the above explanation,
The metal fitting 28 and the protrusion 29 are simultaneously rotated 120 degrees to the left. The metal fitting 28 is located at the right end 3 of the arc-shaped metal fitting 31.
Since it is not in contact with 2 and has a play of 120 degrees,
The arc-shaped metal fitting 31 remains as it is, and thus becomes as shown in FIG. 3. The switch 17 remains in the off state, and the normally inactive circuit 13 remains unblocked.

Sixthly, when unlocking the lock from the inside from the outside, insert the key 21 from the back side of FIG. 7, which is in a state where it is locked from the inside, and turn it 120 degrees to the left.
In this case, the protrusions 25 and 26 are also rotated 120 degrees to the left.
Further, the left end portion 33 of the arc-shaped metal fitting 31 is connected to the metal fitting 28.
Since it is in contact with the metal fitting 28, it also rotates 120 degrees to the left.
Furthermore, since the protrusion 29 also rotates 120 degrees to the left, the sixth
It will be in the state shown in the figure. The switch 17 remains in the off state, and the circuit 13, which is not normally used, remains unblocked. Also, in order to extract the key 21, 120
When rotated by a degree, it becomes as shown in FIG. 3 as explained above.

In this way, it turns on when you lock it from the outside, turns it off when you unlock it from the outside, turns it off when you unlock it from the inside, and does not turn on even when you lock it from the inside.

In the above embodiments, a locking mechanism that mechanically performs locking and unlocking has been described, so the locking mechanism can also be used in a vehicle having a mechanical locking mechanism.

Furthermore, as shown in FIG. 8, another embodiment will be described. Here, the same components as in the above embodiment are given the same reference numerals, and the explanation thereof will be omitted. The circuit configuration of the power cutoff device when going out according to another embodiment is the circuit configuration of the above embodiment, and a touch sensor that detects the touch of a part of the body, or a non-contact light, ultrasonic wave, etc. to detect a person. It is also possible to provide separate optical and ultrasonic sensors. Further, a relay 35 is connected in parallel to the touch, light, and ultrasonic sensor 34.

On the other hand, on the secondary side, there are a switch 36 that detects the rotational state of the key, a switch 37 that detects the entry and exit of the striker, and the touch, light, and ultrasonic sensors 3.
A closing contact 38 actuated by a relay 35 connected to 4 and the excitation coil 18 of the electromagnetic switch shown in the above embodiment are connected in series. In another embodiment, a switch 1 for detecting locking of the door;
Reference numeral 7 includes a switch 36 for detecting the rotational state of the key and a switch 37 for detecting the entry and exit of the striker. Further, an opening contact 39 is connected in parallel to the switch 36 that detects the rotational state of the key, and the opening contact 39 is activated by the excitation coil 18 of the electromagnetic switch to detect the rotational state of the key. This constitutes a self-holding circuit for the switch 36.

In addition, a switch 36 detects the rotation state of the key.
As shown in FIG. 9, the A is installed on the door of the entrance and exit, and is energized only when the protrusion 40 is in contact with the A.
Consists of a contact switch. The switch 37 that detects the entry and exit of the striker is a B contact switch that is installed at the entrance door as shown in Fig. 10, and is energized when the striker is out, but not when the striker is in. It is configured.

Further, it is assumed that the protrusion 40 rotates in the same direction as the rotation of a key (not shown) inserted from the back side of the figure, and does not rotate due to the rotation of a thumb turn (not shown) located on the front side of the figure. Furthermore, the protrusion 40
The button 41 of the switch 36, which detects the rotation state of the key, is contacted only when the key is rotated clockwise, and the button 41 is not contacted when the key is rotated counterclockwise. When the key or thumb turn is turned clockwise, the striker comes out and the lock is locked.
When the lock is turned to the left, the striker engages and the lock becomes unlocked. Furthermore, when removing the key, it is necessary to return it to the state shown in FIG. 9, and in this case, the striker is assumed not to move.

In the circuits according to the other embodiments described above, in order to shut off the circuits that are not normally used, the secondary circuit must be energized and the excitation coil 18 of the electromagnetic switch must be activated. Therefore, only when the lock is locked from the outside, the switch 36 detects the rotation state of the key and the switch 3 detects the entry and exit of the striker.
The contact point with 7 is closed and becomes energized, and the circuit 13 that is not normally used can be cut off.

In the other embodiments described above, when unlocking a lock from the inside from the outside, if the key is rotated even temporarily in the locking direction by mistake and the button 41 is pressed, the circuit that is not normally used is temporarily cut off. However, this case will be explained.

In the above case, two buttons 41 of the switch 36 for detecting the rotational state of the key are provided, and a switch mechanism (not shown) is provided that closes the contact of the switch 36 for detecting the rotational state of the key only when both buttons are pressed. solved by.

[Effect of idea]

As is clear from the above explanation, the power cutoff device according to the present invention locks the door when going out, provided that the selection switch is turned on, to ensure that only the power supply that is not normally used is turned on. It becomes possible to block the

This greatly reduces fires and wasted power consumption due to forgetting to turn off lights.

Furthermore, this operation only works when the door is locked from the outside, and does not work when the door is locked from the inside, making it possible to shut off unused power very naturally.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of a power cutoff device when going out according to an embodiment of the present invention, and FIG. 2 is a side view of a locking mechanism of a door on which the power cutoff device when going out according to the above embodiment is installed. , Figure 3, Figure 4, Figure 5,
6 and 7 are side views showing the operating state of the locking mechanism of the door equipped with the power cutoff device when going out according to the above embodiment, and FIG. 8 is a side view showing the operating state of the locking mechanism when going out according to another embodiment of the present invention. The circuit wiring diagram of the power supply device, FIG. 9 is a side view of the locking mechanism of the door installed with the power cutoff device when going out according to the above other embodiment, and FIG. 10 is the power supply when going out according to the above other embodiment. It is a side view of the striker part in the door in which the interruption device was installed. Explanation of symbols, 10...Power cutoff device when going out,
11... Circuit breaker, 12... Circuit that is constantly used, 1
3...Circuit that is not always used, 14...Contact of electromagnetic switch (switch), 15...Step-down transformer, 16
... Selection switch, 17 ... Switch that detects door locking, 18 ... Excitation coil (switch) of electromagnetic switch, 19 ... Lamp, 20 ... Case, 21
...Key, 22...Thumb turn, 23...Inner cylinder,
24, 28...metal fittings, 25, 26, 29, 40...
...Protrusion, 27...Rod, 30...Circular groove, 3
DESCRIPTION OF SYMBOLS 1...Arc-shaped metal fitting, 32...Right end of an arc-shaped metal fitting, 33...Left end of an arc-shaped metal fitting, 34...Touch, light, ultrasonic sensor, 35...Relay, 36...
...Switch that detects the rotation state of the key, 37...
A switch for detecting entry and exit of the striker, 38...
Closed contact, 39... Open contact, 41... Button.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The power supply circuit is divided into circuits that are always used and circuits that are not always used, a switch is installed on the circuits that are not always used, and the entrance/exit door is locked only from the outside. In addition to installing a switch to detect this, a selection switch is also provided to select whether or not to use the power cutoff device when going out, and when the selection switch is turned on, the switch to detect the locked state of the door is activated. A power cutoff device when going out, characterized in that the switch is activated to cut off circuits that are not normally used. (2) The selection switch is provided with a lamp to confirm its operation.Claim 1 of the utility model registration claim
Power cutoff device when going out as described in section.