JP2001024970A - Placing stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent smoking or firing caused by falling or dropping of connected electrical equipment. SOLUTION: In the state of falling or dropping caused by applying external force to a television receiver placed on a television stand, when a detecting circuit 5 detects the abnormal state, while receiving the output from the detecting circuit 5, a relay driving current (i) is supplied to a relay 2b of a power source switch 2 with relay. Then, an electrified and excited coil 286 of the relay 2b drives an iron core 287 with electromagnetic force and opens a fixed contact 271 and an armature 272 in a main body 2a of switch through an unlock member 2c and the power source switch 2 with relay is switched into power supply cutoff state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting table, and more particularly to a mounting table for preventing smoke and ignition caused by falling or falling of connected electric equipment.

[0002]

2. Description of the Related Art As an example of a conventional mounting table, a television stand with a power outlet (television stand) is provided with a power plug, a power outlet receiving power supplied from a power source to which the power plug is connected, and a power outlet. And a housing provided on the upper surface.

In such a conventional TV stand, a power plug is connected to a power source, a television receiver is mounted on the top of the housing, and a power outlet is supplied with power from the power plug connected to the power source. The television receiver is connected and used. That is, the conventional television stand is provided with a power outlet in the housing, so that the wiring of the television receiver and other electric devices connected to the power outlet is omitted, and the television receiver is provided on the upper surface of the housing. By mounting the TV, it has been possible to view the television receiver at an optimal position for the user.

[0004]

However, the conventional TV stand has the following problems. That is, the conventional TV stand, even if the television receiver mounted on the top of the housing has fallen over due to a disaster or the like,
As long as the power plug is connected to the indoor power wiring, the power supply to the power outlet is maintained, so the television receiver connected to the power outlet is destroyed while the power is on, and the high-voltage circuit and large current There was a possibility that a secondary disaster such as smoking or ignition would occur from the occurrence of sparks in the circuit.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a mounting table for preventing smoke and ignition caused by falling or falling of a connected electric device.

[0006]

In order to solve the above-mentioned problems, a mounting table according to the present invention is provided with a power supply plug and a power supply connected to the power supply plug. A power outlet for supplying power, a housing provided with the power outlet on a wall, and a power plug inserted between the power plug and the power outlet, and cut from a disconnected state to a connected state only when a mechanical input is received. A relay that supplies power to the power outlet and switches from a connected state to a disconnected state to cut off power supply to the power outlet when the mechanical input is released or an electrical input is received. A power switch with a relay connected between the power switch with the relay and the power outlet, receiving power supplied from a power source to which the power plug is connected, and operating, Giving said electrical input to the relay with the power switch when it detects an abnormality of electric appliances connected to a source outlet, characterized in that it comprises a detection circuit for switching the power switch with the relay disconnected. Further, the detection circuit includes a plurality of detection circuits for detecting an abnormality of an electric device connected to the power outlet. Further, the power switch with a relay, when receiving an electrical input from the plurality of detection circuits, switches from a connected state to a disconnected state to cut off the supply of power to the power outlet. I do. Further, the power switch with a relay is a switch body having a fixed contact and a contact piece, a coil energized and energized in response to an electrical input as a detection output of the detection circuit, and an actuator driven by an electromagnetic force of the coil. And a lock releasing member that links the contact piece of the switch body and the actuator of the relay. Further, the switch body of the power switch with a relay includes a switch housing having a fixed contact, an operation button having a contact piece that closes the fixed contact and the lock position, and an annular groove connected to and linked to the operation button. A fitting insertion portion having one end held by the switch housing, and the other end inserted into the groove of the fitting insertion portion as a free end so that the operation button receives a mechanical input; A hook that is displaced while being inserted into the fixed contact, engages with the unlocking member at the locked position where the fixed contact and the contact piece are closed, and receives the displacement of the unlocking member due to an electrical input to the hook. A hook for moving the operation button from a locked position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, as an example of a mounting table according to a first embodiment of the present invention, a TV stand with a power outlet (TV stand) will be described in detail with reference to the drawings. FIG. 1 is a block diagram for explaining a configuration of a television stand according to the first embodiment of the present invention. FIG. 2 (a)
Is a partial cross-sectional view for explaining a power OFF state of the power switch with relay, (b) is a side view for explaining a hook of the power switch with relay, and (c) is a power ON of the power switch with relay. It is a partial sectional view for explaining a state. FIG. 3 is an external view for explaining a groove of a fitting portion of a power switch with a relay. FIG. 4 is an explanatory view showing the operation of the unlocking member of the power switch with relay. FIG. 5A is an external view of a television stand for explaining an example of installation of movable parts for detecting an abnormal state in the television stand according to the first embodiment of the present invention, and FIG. FIG. FIGS. 6A to 6C are a front view, a plan view, and a plan view of a television stand according to the first embodiment of the present invention.
And (d) and (e) are a front view and a side view in a state where the television receiver is mounted on the television stand according to the first embodiment of the present invention. FIG. 7 is a flowchart for explaining the operation of the TV stand according to the first embodiment of the present invention.

As shown in FIG. 1, the television stand according to the first embodiment of the present invention comprises a power plug 1, a power outlet 3 for receiving power from a power source to which the power plug 1 is connected, Power plug 1 and power outlet 3
And a power supply disconnection circuit A having a power switch 2 with a relay, a power supply circuit 4, a detection circuit 5, a relay control circuit 6, a relay drive circuit 7, and a pilot lamp 8; It mainly includes a housing (not shown) having a power supply circuit A on a wall surface. Further, the power switch with relay 2 has a fixed contact 271.
And a switch body 2a having a contact piece 272 and a coil 2 energized and excited by an output from the relay drive circuit 7.
86 having an iron core 287 as an example of an actuator driven by the electromagnetic force of the coil 286
b and a lock release member 2c for linking the switch body 2a and the iron core 287.

The switch body 2a of the power switch with relay 2 opens the fixed contact 271 and the contact piece 272 shown in FIG. The power is turned off as a lock position for disconnecting the power plug 3 and the power outlet 3, or the power is turned on as a lock position for connecting the power plug 1 and the power outlet 3 by closing the fixed contact 271 and the contact piece 272. State. Further, the switch body 2a will be described in more detail with reference to FIGS. 2 (a) to 2 (c). The fixed contact 271 shown in FIG.
1, a push button 281 as an example of an operation button having the contact piece 272 shown in FIG. 1, and a fitting portion 285 having an annular groove 285 a in connection with and linked to the push button 281. , One end (b end)
Is held by the power switch housing 284, and the other end (a
End) is a free end and the groove 285a of the fitting portion 285
Hook 282 fitted in the power switch housing 2
2 further includes a spring 283 that elastically urges the push button 84 and the push button 281 away from each other.
The state shown in FIG. 2A is called a power-off state, and the position shown in FIG. 2C is called a power-on state.
Switching is performed according to the cycle of the power-off state and the power-on state.

[0010] That is, the hook 282 has a “b” end shown in FIG.
The end a is inserted into the groove 285 a of the insertion portion 285 which is connected to and interlocks with the push button 281 urged by the elastic force of the spring 283.
With the elastic force of the above, the points E and G of the groove 285a are set to the lock position, and the power supply OFF state and the power supply ON state are maintained. The groove 285a of the fitting portion 285 is
As shown in FIG. 3, steps d are engraved at points E, F, G, and J, and the a-end of the hook 282 to be inserted into the groove 285a is from point E to point F, point F. Move from point G to point G, point J to point J, and point J to point E only in one direction.

Relay 2b of power switch 2 with relay
4 will be described in more detail with reference to FIG. 4. A coil 286 which receives a relay drive current i as an electrical input supplied from the relay drive circuit 7 shown in FIG.
And an iron core 287 connected to and linked to an arm 288 as an example of the unlocking member 2c and driven in the direction of the arrow β by the electromagnetic force of the coil 286. The arm 288 has one end engaged with the a end of the hook 282 and the other end connected to the fixed position X point with the power switch housing 284 shown in FIGS. 2A and 2C as a fulcrum. By operating in conjunction with the iron core 287, the fixed contact 271 and the contact piece 272 of the switch body 2a shown in FIG. 1 are opened and switched to the disconnected state.

The power plug 1 connects an electric circuit for supplying electric power from the indoor power wiring (not shown) to the power outlet 3 by a user.

The power outlet 3 is supplied with power from an unillustrated indoor power supply wire to which the power plug 1 is connected, and supplies power to a not-shown television receiver connected to the power outlet 3.

The power supply circuit 4 is connected between the power switch 2 with relay and the power outlet 3 and operates by receiving power supply, and operates as a detection circuit 5, a relay control circuit 6,
Power is supplied to the relay drive circuit 7 and the pilot lamp 8.

As shown in FIGS. 5A and 5B, the detection circuit 5 is provided on the upper
And a fixed component 225 having two terminals having different potentials. As an abnormal state, for example, when it is detected that the television receiver placed on the housing upper surface 222 has fallen,
By changing the state of “a” and switching the electrical contact between the movable part 223 a and the fixed part 225, the signal output to the relay control circuit 6 changes.

That is, at the installation position where the bottom surface of the television receiver is in contact with the upper surface 222 of the housing, the bottom surface of the television receiver is pushed into the upper surface 222 of the housing.
The movable part 223a is provided so as to protrude from the upper surface 222 of the housing at an abnormality detection position apart from the main body, and the electric contact 224 of the movable part 223a and the terminal of the fixed part 225 are opened at the abnormality detection position to thereby generate electricity. And outputs it to the relay control circuit 6. Further, as shown in FIGS. 6 (a) to 6 (e), the upper surface 222 of the housing of the television stand is adapted to fit the shape and size of the bottom surface of the television receiver mounted on the upper surface 222 of the housing. The movable part 22 extends diagonally from the right front end to the left rear end of the body upper surface 222.
There is a moving rail 229a for moving the tip of 3a to a contact position with the bottom surface of the television receiver, and the movable part 223a has a shape and size of the bottom surface of the television receiver mounted on the housing upper surface 222. According to the situation, it is locked at any position.

The relay control circuit 6 receives the signal output from the detection circuit 5 and outputs a signal for activating the relay drive circuit 7 when a predetermined signal is input.

The relay drive circuit 7 receives the signal output from the relay control circuit 6 and supplies a relay drive current i as an electrical input to the coil 286 of the relay 2b of the power switch 2 with relay. The power switch with relay 2 inserted between the plug 1 and the power outlet 3 is switched from a connected state to a disconnected state.

The pilot lamp 8 lights up whether or not power is supplied to the power supply circuit 4, that is, whether or not power is being supplied to the power outlet 3.

Next, regarding the operation of the power switch 2 with relay used in the TV stand according to the first embodiment of the present invention, switching between power ON and power OFF by a mechanical input 21 is described with reference to FIGS. I will explain. The power switch with relay 2 is switched to a power-connected state or a power-off state when the fixed contact 271 and the contact piece 272 are closed or opened in the locked position by applying the mechanical input 21 to the switch body 2a.

That is, the power switch 2 with the relay
When switching the power from power OFF to power ON,
From the state shown in FIG.
Hook 282 that is inserted into the groove 285 a of the insertion portion 285 that is coupled to the push button 281 by applying a force in the
Is moved from point E to point F. Next, the force applied to the push button 281 is released. However, since the push button 281 is elastically urged by the spring 283, the push button 281 is returned in the direction opposite to the arrow α, and as shown in FIG. The end a of the hook 282 moves from the point F to the point G. At point G, the fixed contact 271 and the contact piece 272 of the power switch housing 284 shown in FIG. 1 are closed, and the power switch is switched to the power connection state. Also, the push button 281
The elastic force of the spring 283 is urged to the end of the hook 282 that is inserted into the groove 285a of the insertion portion 285 that is connected and linked to the push button 281 by the elastic force.
The power-on state is kept at the point G as the lock position.

When the power switch 2 with the relay is switched from the power ON state to the power OFF state, a force in the direction of arrow α is applied to the push button 281 from the state shown in FIG. The end a of the hook 282 fitted in the groove 285a of the fitting portion 285 linked to and linked to the component 281 is moved from the point G to the point J2. Next, the force applied to the push button 281 is released.
Since the push button 281 is elastically biased by the spring 283, it is returned in the direction opposite to the arrow α, and FIG.
As shown in the figure, the end a of the hook 282 is E
Move to a point. At point E, the power switch housing 284
The fixed contact 271 and the contact piece 272 shown in FIG. 1 are opened and switched to the power-off state. The push button 281 is biased by the elastic force of a spring 283,
The hook 282 inserted into the groove 285a of the insertion portion 285 which is connected to the push button 281 by the elastic force.
The end a of FIG. 3 keeps the power OFF state with the point E as a lock position.

Next, regarding the operation of the power switch 2 with relay used in the TV stand according to the first embodiment of the present invention, switching from power ON to power OFF by electric input will be described with reference to FIGS. Will be explained. In the power switch 2 with the relay, when the power is turned on as shown in FIG. 2C, the end a of the hook 282 fitted in the groove 285a is located at the point G.
The arm 288 shown in FIG. 4 to which the point is fixed has one end fixed to the iron core 287 and the other end engaged with the a end of the hook 282.

When an abnormal state is detected, the relay drive circuit 7 supplies a relay drive current i to the coil 286 of the relay 2b, and when the relay drive current i flows through the coil 286, the relay drive circuit i Generates an electromagnetic force to drive in the direction. Accordingly, the iron core 287 is displaced in the direction of the arrow β, and the hook 282 inserted and inserted into the groove 285a via the arm 288 fixed at the point X in conjunction with the iron core 287, ) And the dotted line in FIG. 4, the end a of the hook 282 moves to the point J.

The hook 28 to be inserted into the groove 285a
When the end a of No. 2 moves to the point J, the push button 281
Is moved in the direction opposite to the arrow α by the elastic force of the spring 283, and is connected to the push button 281 to be interlocked.
The end a of the hook 282 inserted into the groove 285a of the second 85 moves from the point J to the point E, and the power switch 2 with the relay
Is turned off. That is, at the point E, the fixed contact 271 of the power switch housing 284 shown in FIG.
And the contact piece 272 are opened and switched to the power-off state.
An elastic force of a spring 283 is urged on the push button 281, and the a end of the hook 282 inserted into the groove 285 a of the insertion portion 285 connected to and linked to the push button 281 by the elastic force is: The power supply OFF state is kept at the point E as the lock position.

Table 1 shows that, with respect to the television stand according to the first embodiment of the present invention, the television receiver mounted on the housing upper surface 222 is not in an abnormal state, and the detection circuit 5 does not detect the abnormal state. Or when the television receiver is in an abnormal state and the detection circuit 5 detects the abnormal state, the relay control circuit 6, the relay drive circuit 7,
5 is a definition table of outputs and operation states of a power switch with a relay 2, a power outlet 3, and a power supply path disconnection circuit A.

[0027]

[Table 1]

Next, the operation of the TV stand according to the first embodiment of the present invention will be described with reference to the flowchart of FIG.

In the television stand according to the first embodiment of the present invention, the user inserts the power plug 1 into the indoor power wiring (step S1), and the movable parts of the detection circuit 5 disposed on the upper surface 222 of the housing. The television receiver is placed so that the 223a is at the installation position where it is pushed into the inside of the housing (step S2). Next, the power switch 2 with the relay receives the mechanical input 21 of the user, the fixed contact 271 and the contact piece 272 of the switch main body 2a are closed, and the power is switched on (step S3), so that the power circuit 4 is turned on. Then, power is supplied to the power outlet 3 (step S4). When power is supplied to the power supply circuit 4, the power supply circuit 4 receives the supply of power, and the detection circuit 5, the relay control circuit 6, and the relay drive circuit 7 start detecting an abnormal state. 8 lights up. Further, the television receiver which receives the supply of power to the power outlet 3 and receives the supply of power from the power outlet 3 starts receiving a signal input from the outside.

In such a television stand to which power is supplied to the power supply circuit 4 and the power supply outlet 3, the television receiver mounted on the housing upper surface 222 does not fall or fall, and the detection circuit does not fall. If no abnormal condition is detected, the detection circuit 5 outputs L (step S5), and upon receiving the output from the detection circuit 5, the relay control circuit 6 outputs L.
Is output (step S6). Further, the relay drive circuit 7 receiving the output from the relay control circuit 6 maintains the power supply connection state of the power switch with relay 2 and does not flow the relay drive current i (step S7). Therefore, the power supply connection state of the power switch with relay 2 is maintained, and the reception operation of the television receiver receiving the supply of power from the power outlet 3 continues.

When the supply of power to the television stand and the television receiver is stopped, the mechanical input 21 is applied to the power switch 2 with relay by the user's hand, and the switch body 2a is turned off.
The fixed contact 271 and the contact piece 272 are opened to turn off the power.
(Step S14), and the power plug 1
From the indoor power wiring (not shown) (step S1).
5).

Further, in the television stand in which power is supplied to the power supply circuit 4 and the power supply outlet 3, the housing upper surface 22
When the television receiver mounted on the TV receiver 2 is in a state such as falling or falling due to an external force applied thereto and the detection circuit 5 detects an abnormal state, the detection circuit 5 outputs H (step S).
5) Upon receiving the output from the detection circuit 5, the relay control circuit 6 outputs H (step S8). Further, a relay drive circuit 7 receiving an output from the relay control circuit 6
Supplies the relay drive current i to the relay 2b of the power switch 2 with a relay, the energized and excited coil 286 of the relay 2b drives the iron core 287 by electromagnetic force, and the switch main body 2a via the unlocking member 2c. Fixed contact 271
And the contact piece 272 are opened, and the power switch with relay 2 is switched to a power-off state (step S9).

When the power switch 2 with the relay is switched to the power-off state, the power supply path disconnecting circuit A stops its operation, and the supply of power to the power outlet 3 is also cut off (step S10). Therefore, the power outlet 3
The receiving operation of the television receiver, which is supplied with electric power from the television receiver, is also stopped by the interruption of the supply of electric power to the power outlet 3, but does not lead to destruction while the power is being supplied, and the occurrence of disasters such as smoking and ignition occurs. Can be prevented.

Further, the TV stand, which has detected that the television receiver placed on the housing upper surface 222 has fallen or dropped, switches the power switch with relay 2 to the power-off state. After confirming that there is no abnormality in the receiver (step S11),
The television receiver is placed so that the movable part 223a of the detection circuit 5 disposed in the second position is pushed into the inside of the housing (step S12). The power supply circuit 4 is turned on by the mechanical input 21 (step S13).
Then, power is supplied to the power outlet 3 and the power outlet 3 can be used again.

When the power switch 2 with the relay is
In the case of the FF, the power supply circuit 4 and the detection circuit 5 which operates by receiving the supply of power from the power supply circuit 4 do not operate, but the power outlet 3 and the television receiver connected to the power outlet 3 also supply power. There is no supply, and there is no danger of smoke or fire accidents, even if an external force is applied that could cause the television receiver to break.

As described above, according to the television stand according to the first embodiment of the present invention, an external force is applied to the television receiver mounted on the housing upper surface 222 and supplied with power from the power outlet 3. When the detection circuit 5 detects a fall, a fall, or the like, the power switch 2 with the relay is switched to a power-off state in response to the output from the detection circuit 5, and the power switch 3 is switched to the power outlet 3 and the power supply path disconnection circuit A The power supply is immediately shut off, and the television receiver receiving the power supply from the power outlet 3 also stops operating. Therefore, even when an external force is applied to the television receiver and the television receiver is destroyed by a large impact such as falling or falling, power is supplied to the television stand and the television receiver connected to the power outlet 3 of the television stand. There is no circuit to receive this, and it is possible to prevent the occurrence of secondary disasters caused by smoke and fire from the TV stand and the television receiver.

Further, according to the television stand according to the present embodiment, the power supply is provided only when power switch 2 with relay inserted between power plug and 1 and power outlet 3 receives mechanical input 21. Switch body 2 of switch 2
When the fixed contact 271 and the piece 272 are closed and switched to the power connection state to supply power to the power outlet 3 and receive the mechanical input 21 or the electrical input from the detection circuit 5 again. Then, the fixed contact 271 and the piece 272 of the switch body 2a of the power switch 2 are opened to switch to the power-off state, and the supply of power to the power outlet 3 is cut off. Therefore, all the power supply to the power outlet 3 is performed by the mechanical input 21.
In the state before the power is turned on, there is no need for any operating power supply or the like for waiting for an electrical input, and after the supply of power to the power outlet 3 is cut off, the mechanical power to the power switch 2 with the relay is turned off. Since only the input 21 is the only means for switching to the power supply connection state, the fixed contact 271 of the switch main body 2a of the power switch 2 is electrically input.
And a switch for closing the section 272 and switching to the power supply connection state, and a reset switch for supplying the power again to the power outlet 3 where the detection circuit 5 operates and the power supply is cut off are unnecessary. Thus, the circuit configuration and the number of assembly steps can be simplified.

Further, the TV stand in which the power switch 2 with the relay is switched to the power-off state by detecting a fall or a drop of the television receiver mounted on the upper surface 222 of the housing is set by the user. After confirming that there is no abnormality in the television receiver, the television receiver is placed so that the movable part 223a of the detection circuit 5 disposed on the upper surface 222 of the housing is at an installation position where the movable component 223a is pushed into the housing. Further, by turning on the power switch 2 with the relay by the mechanical input 21 by the user, the power is supplied to the power circuit 4 and the power outlet 3 and becomes usable again. Does not require special operations.

Further, the movable part 223a of the detection circuit 5
Can be locked at an arbitrary position on the moving rail 229a disposed on the housing upper surface 222, so that the user can operate the television receiver regardless of the shape and size of the bottom surface of the television receiver, The television receiver can be mounted on the upper surface 222 of the television stand without worrying about whether or not the television receiver is provided with a safety device for detecting a fall, a fall, or the like when a disaster or the like occurs and stopping the operation. By simply mounting the receiver and receiving power from the power outlet 3, it is possible to ensure high security of switching the television receiver to a power-off state in the event of a disaster or the like.

Next, a TV stand with a power outlet (TV stand) will be described in detail with reference to the drawings as an example of a mounting table according to the second embodiment of the present invention. FIG.
FIG. 9 is a partial block diagram for explaining configurations of a detection circuit, a relay control circuit, and a relay drive circuit in a television stand according to the second embodiment of the present invention. FIG.
(A) to (c) are front, plan, and side views of a TV stand according to a second embodiment of the present invention, and (d) and (e) are second embodiments of the present invention. FIG. 1 is a front view and a side view in a state where a television receiver is mounted on a television stand according to the first embodiment.

The TV stand according to the second embodiment of the present invention has a configuration in which two detection circuits 5 are provided as compared with the TV stand according to the first embodiment, and as shown in FIG. The detection circuit 5a and the detection circuit 5b are connected in parallel to the relay control circuit 6 via the terminals a and b, respectively.

The detection circuit 5a and the detection circuit 5b operate independently, are both disposed on the upper surface of the housing, and have a movable part 223a and a fixed part having two terminals having different potentials from the movable part 223b having electric contacts. Mainly composed of As an abnormal state, for example, when the fall of the television receiver disposed on the upper surface of the housing is detected, the states of the movable parts 223a and 223b change,
By switching the electrical contacts between the movable parts 223a and 223b and the fixed parts, the relay control circuit 6
It operates so that the signal output to is changed.

The movable part 223a of the detection circuit 5a is pushed into the housing at the installation position where the bottom surface of the television receiver is in contact with the top surface of the housing, and the bottom surface of the television receiver is separated from the top surface of the housing. The movable part 223a is disposed so as to protrude from the upper surface of the housing at the abnormality detection position. Further, the movable part 223b of the detection circuit 5b is pushed in at the initial installation position of the television receiver in the housing, and protrudes forward at the abnormality detection position where the television receiver has moved.
b is provided. By opening the electrical contacts of the movable part 223a and the movable part 223b and the terminal of the fixed part at such an abnormality detection position, the signal is converted into an electric signal and output to the relay control circuit 6. Specifically, as shown in FIGS. 9A to 9E, the shape and size of the bottom surface of the television receiver mounted on the housing top surface 222 are set on the top surface of the housing of the TV stand. There is a moving rail 229a for moving the front end of the movable component 223a to a contact position with the bottom surface of the television receiver in a diagonal direction from the right front end to the left rear end of the housing upper surface 222. 223
a is locked at an arbitrary position according to the shape and size of the bottom surface of the television receiver mounted on the housing upper surface 222. Further, in order to move the tip of the movable part 223b to a contact position with the back of the television receiver, a moving rail 229b1 is moved from the right rear end to the right front end of the housing upper surface 222 from the right rear end. There is a moving rail 229b2 toward the left rear end, and the movable part 223b
It is locked at an arbitrary position according to the shape and size of the rear surface of the television receiver mounted on the housing upper surface 222.

Next, the operation of the TV stand according to the second embodiment of the present invention will be described with reference to the drawings. The television stand according to the second embodiment of the present invention is a television stand in an installation position where the movable parts 223a and 223b of the detection circuits 5a and 5b disposed on the upper surface 222 of the housing by the user are pushed into the inside. The television receiver is placed on the television receiver and becomes usable. The television receiver receives power supplied from the power outlet 3 and starts receiving a signal input from the outside.

An external force is applied to such a television receiver mounted on the upper surface 222 of the housing, and the television receiver is in a state of falling or falling, and the movable receiver 223a or 223b
The detection circuit 5a or the detection circuit 5b in which the state of
The relay control circuit 6 outputs a signal indicating an abnormal state to the relay control circuit 6, and the relay control circuit 6 sends the signal to the detection circuit 5a or the detection circuit 5b.
Upon receiving a signal indicating an abnormal state from one of them,
The power switch with relay 2 operates to switch to the power-off state. Alternatively, the television receiver mounted on the housing upper surface 222 is in a state such as falling or falling due to an external force applied thereto, and the detection circuits 5a and 5b in which the states of the movable parts 223a and 223b have changed are The relay control circuit 6 outputs a signal indicating an abnormal state to the relay control circuit 6, and the relay control circuit 6 receives the signal indicating the abnormal state from both of the detection circuits 5a and 5b and turns on the power switch 2 with the relay. It operates to switch to the disconnected state.

Therefore, the power switch 2 with the relay is switched to the power-off state, and the receiving operation of the television receiver receiving the power supply from the power outlet 3 is also stopped. ,fuming,
The occurrence of disasters such as fire can be prevented.

As described above, according to the television stand according to the second embodiment of the present invention, an abnormal state such as a fall or a fall of the television receiver supplied with power from the power outlet 3 can be detected by the detection circuit 5a or the detection circuit 5a. 2 different detection circuits 5b
Direction, the power switch with relay 2 is switched to the power-off state when one of them is detected to fall, fall, etc., so that the external force applied to the TV stand in a vertical direction or a horizontal direction is detected. An abnormal state can be detected irrespective of the direction and the position, and the capability of detecting the abnormal state of the connected television receiver increases compared to the television stand according to the first embodiment, thereby improving safety.

Alternatively, an abnormal state such as a fall or a fall of the television receiver which is supplied with power from the power outlet 3 is detected in two different directions of the detection circuit 5a and the detection circuit 5b.
The power switch 2 with the relay is switched to the power-off state only when two points are detected, and when both of them detect a fall, a fall, and the like, the number of the connected television receivers is smaller than that of the TV stand according to the first embodiment. The accuracy of detecting an abnormal state is improved, malfunctions due to daily impacts or the like are prevented, and reliability is improved.

Although the embodiments of the present invention have been described above, the present invention can be variously modified. For example, the detection circuit 5 for detecting an abnormal state may detect the fall of the housing 2 instead of detecting the fall or the fall of the connected television receiver. Alternatively, it may be detected that both the housing and the housing have fallen.

[0050]

As described above, according to the mounting table of the present invention, the power switch with the relay inserted between the power plug and the power outlet can be used as an abnormal state of the connected electric equipment, for example, as the electric equipment. When the vehicle falls over or is exposed to the danger, the detection circuit that detects the abnormality opens the power switch with the relay via the relay, thereby immediately shutting off the supply of power to the power outlet. Therefore, even if the electric device connected to the power outlet of the mounting table does not have a safety device that detects an abnormal state and stops the operation, or the electric device without the safety device and the electric device without the safety device, Even if both are connected to the power outlet, the mounting table that supplies power to the electric device can detect an abnormal state and stop the operation of the electric device, so that the connected electric device due to a disaster or the like Of the high voltage circuit or the large current circuit, thereby preventing the occurrence of secondary disasters such as smoke and ignition caused by sparks and the like. Also, the power switch with relay inserted between the power plug and the power outlet,
Only when a mechanical input is received, it switches from the disconnected state to the connected state to supply power to the power outlet, and when the mechanical input is released or an electrical input is received, the connected state is switched to the disconnected state. And the power supply to the power outlet is cut off, so that all power supply to the power outlet is performed by mechanical input, and once power is cut off, the Since only a specific input is the only means to connect to the power supply, there is no need for a reset switch, etc., as a prerequisite for switching to the power supply connection state with an electrical input or turning on the power again after avoiding abnormalities. Man-hours,
Also, there is an effect that the operation method can be simplified. In addition, the power switch with a relay is not connected to a power outlet even when it is necessary to go out of the room, even when it is necessary to go out of the room, but not at the time of going to bed or switching the power switch with the relay to the power-off state by an electrical input. Since the supply of power to the power supply can be cut off collectively by a mechanical input, an effect such as excellent operability and safety can be obtained even during normal use.

Further, the detection circuit is constituted by a plurality of detection circuits for detecting external forces from various directions and positions with respect to the electric device connected to the power outlet, and any one of the plurality of detection circuits detects an abnormality. If detected, the power switch with the relay is switched from the power supply connection state to the power supply disconnection state to immediately cut off the supply of power to the power outlet, so that the abnormal state detection capability for the mounted electric equipment is high, and the safety is high. The effect is that the performance can be improved. In addition, the power switch with the relay switches from the connected state to the disconnected state when receiving an electric input from at least two detection circuits, and cuts off the supply of power to the power outlet. By such means, it is possible to prevent an erroneous operation in which the power switch with relay is switched from a power supply connection state to a power supply disconnection state, thereby improving the reliability.

Further, in the power switch with the relay, the unlocking member for linking the contact piece of the switch main body and the actuator of the relay receives an electric signal input to the relay when an abnormality occurs, and contacts the fixed contact of the switch main body. Since the structure is such that the section is reliably switched to the cut state, an effect is obtained that electrical input can be converted into mechanical operation with a simple configuration. The switch body of the power switch with relay has one end held by the switch housing and the other end as a free end, which is inserted into the groove of the insertion portion by a user's hand. By applying a unidirectional mechanical input, the fixed contact and the contact piece can be easily switched according to the opening, closing, opening cycle, and the coil that is energized and excited by the detection output of the detection circuit and the electromagnetic force of the coil A relay equipped with a driven actuator displaces a hook via an unlocking member, and electromagnetically unlocks a contact piece in the switch body. In addition, the release of the mechanical input and the electrical input do not interfere with each other, so that it can be reliably opened both in normal and abnormal situations. Achieve the results.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a television stand according to a first embodiment of the present invention.

FIG. 2A shows a power supply OF of a power switch with a relay.
FIG. 4B is a partial cross-sectional view for explaining an F state, FIG. 6B is a side view for explaining a hook of a power switch with a relay,
(C) is a partial sectional view for explaining a power-on state of the power switch with relay.

FIG. 3 is an external view for explaining a groove of a fitting portion of a power switch with a relay.

FIG. 4 is an explanatory view showing the operation of a lock release member of the power switch with relay.

FIG. 5A is an external view of a television stand for explaining an example of installation of movable parts for detecting an abnormal state in the television stand according to the first embodiment of the present invention, and FIG. It is a partial enlarged view.

FIG. 6 (a) is a front view, a plan view, and a side view of a TV stand according to the first embodiment of the present invention, and FIG. 6 (b) shows a TV stand according to the first embodiment of the present invention. It is the front view and side view in the state where the television receiver was mounted.

FIG. 7 is a flowchart for explaining an operation of the TV stand according to the first embodiment of the present invention.

FIG. 8 is a partial block diagram illustrating a configuration of a detection circuit, a relay control circuit, and a relay drive circuit in a television stand according to the second embodiment of the present invention.

FIGS. 9A to 9C are a front view, a plan view, and a side view of a TV stand according to a second embodiment of the present invention;
(D) and (e) are the front view and the side view in the state where the television receiver was mounted on the television stand according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power plug 2 Power switch with relay 2a Switch body 2b Relay 2c Unlocking member 3 Power outlet 4 Power circuit 5 Detection circuit 6 Relay control circuit 7 Relay drive circuit 8 Pilot lamp 222 Top surface of housing 223a Moving parts 224 Electrical contact point 225 Fixed component 271 Fixed contact 272 Contact piece 281 Push button 282 Hook 283 Spring 284 Power switch housing 285 Insertion section 285a Groove 286 Coil 287 Iron core 288 Arm A Power supply path disconnection circuit

Claims (5)

[Claims] 1. A power supply plug, a power supply outlet receiving power supply from a power supply connected to the power supply plug, and supplying power to a connected electric device, and a housing having the power supply outlet on a wall surface, It is inserted between the power plug and the power outlet, and is switched from a disconnected state to a connected state to supply power to the power outlet only when a mechanical input is received, and the mechanical input is released or A power switch with a relay that switches from a connected state to a disconnected state to cut off supply of power to the power outlet when an electrical input is received, and a power switch connected between the power switch with the relay and the power outlet; The power plug operates upon receiving power supply from a connected power supply, and detects an abnormality in an electric device connected to the power outlet, and A mounting circuit for providing the electrical input to the power switch with the relay and switching the power switch with the relay to a disconnected state. 2. The mounting table according to claim 1, wherein the detection circuit includes a plurality of detection circuits for detecting an abnormality of an electric device connected to the power outlet. 3. The power switch with a relay switches from a connected state to a disconnected state and cuts off supply of power to the power outlet when receiving an electrical input from the plurality of detection circuits. The mounting table according to claim 2, characterized in that: 4. The power switch with a relay is driven by a switch body having a fixed contact and a contact piece, a coil energized and energized upon receiving an electrical input as a detection output of the detection circuit, and an electromagnetic force of the coil. The mounting table according to claim 1, further comprising: a relay having an actuator to be operated; and a lock release member that links the contact piece of the switch body and the actuator of the relay. 5. The switch body of the power switch with relay, the switch body having a fixed contact, an operation button having a contact piece closed with the fixed contact in a lock position, and a ring connected to and linked to the operation button. When the operation button receives a mechanical input, the fitting insertion portion having a groove, one end is held by the switch housing, and the other end is fitted into the groove of the fitting insertion portion as a free end. A hook that is displaced while being inserted into the groove, engages with the unlocking member at the lock position where the fixed contact and the contact piece are closed, and controls displacement of the unlocking member due to electrical input. The mounting table according to claim 4, further comprising a hook for receiving and moving the operation button from the lock position.