JP2003142217A - Ac adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an AC adapter in which the problem that other electric apparatus can not be used due to the plug-in receptacles being blocked is avoided and wasteful consumption of power can be prevented. SOLUTION: The AC adapter comprises an AC/DC conversion part 5 for converting the AC power into DC power, a casing 6 for housing the AC/DC conversion part 5, a tooth form for supplying AC power to the AC/DC conversion part 5 by inserting in the plug-in receptacle of the service power, a connecting part 2 for supplying the DC power converted by the AC/DC conversion part 5 to one of electric apparatuses, and a hole part 4 that is provided in the casing 6 and is capable of supplying AC power to the other electric apparatus by being inserted with an AC plug of the other electric apparatus. The AC adapter is equipped with one or both of a first switching part 11 that switches on and off the connection of the tooth form 3 and the AC/DC conversion part 5 and a second switching part 12 for switching on and off the connection of the tooth form 3 and the hole part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC adapter that converts an AC commercial power source into a DC power source and supplies the DC power source to an electric device.

[0002]

2. Description of the Related Art A conventional AC adapter has an AC / DC converter for converting an AC power supply into a DC power supply.
On the input side of the converter, a tooth type is provided to be plugged into a commercial power outlet. On the output side of the AC / DC conversion unit, a connection unit connected to an electric device is provided.

The AC / DC converter is generally arranged in a resin case, and the tooth profile is projected on one plane of the case. Further, the connecting portion is composed of a connector provided at the tip of the cord extended from the housing. When the tooth mold is inserted into an outlet and the connecting portion is connected to an electric device, the DC power converted from the commercial power source is supplied to the electric device.

[0004]

However, according to the conventional AC adapter described above, a plurality of plug-in outlets provided on the wall surface of a general household are usually arranged side by side. For this reason, when the tooth type is inserted into one plug-in outlet, there is a problem that the other plug-in outlets are closed by the housing and other electric devices cannot be used.

If a tooth mold is provided at the end of the housing and the AC adapter is inserted into the lower outlet, it is possible to prevent other outlets from being blocked. However, if multiple AC adapters are used, they must be plugged into the bottom and top outlets. For this reason, the AC adapter inserted into the upper outlet has a problem that the weight above the tooth mold becomes large and the cord extended from the housing falls off from the outlet when the force is applied.

Further, the AC adapter is still supplied with power even when the power of the electric equipment connected to the AC adapter is cut off. Therefore, there is also a problem of wasting electric power.

The present invention avoids the problem that other electrical equipment cannot be used, and also enables the use of a plurality of AC adapters without being dropped from the plug socket.
The purpose is to provide an adapter. Another object of the present invention is to provide an AC adapter capable of preventing wasteful power consumption.

[0008]

In order to achieve the above object, the present invention provides an AC / DC system for converting an AC power supply into a DC power supply.
A converter, a housing for accommodating the AC / DC converter, a tooth type for supplying AC power to the AC / DC converter by being inserted into an outlet of a commercial power source, and the AC / DC converter. A connecting portion for supplying the converted direct current power to one electric device, and a hole portion which is formed so that an AC plug of the electric device can be inserted and which is electrically connected to the tooth form and can supply the alternating current power to another electric device. It is characterized by having.

According to this structure, the tooth mold is inserted into the outlet of the commercial power source, and the DC power source converted by the AC / DC converting unit is supplied to the electric equipment connected to the connecting unit.
Further, an AC plug of another electric device is inserted into the hole to supply AC power to the other electric device.

According to the present invention, in the AC adapter having the above structure, the tooth profile and the hole are formed on the first and second surfaces of the housing which face each other, and the tooth profile is projected on the first surface. It is characterized in that the positions of the hole and the hole are matched. According to this structure, the first surface of the other AC adapter is in contact with the second surface of the one AC adapter, and the plurality of AC adapters are arranged in an orderly stack.

According to the present invention, in the AC adapter having the above structure, a concave portion formed on the first surface and a convex portion projecting from the second surface and projected on the first surface to be formed at the same position as the concave portion. And a recessed portion formed by recessing from the second surface to the first surface side between the convex portion and the hole portion.

According to this structure, when a plurality of AC adapters are stacked, the first surface of the other AC adapter is in contact with the second surface of the one AC adapter,
The concave portion of another AC adapter is fitted into the convex portion of the adapter. At this time, a space is formed by the recessed portion between the one AC adapter and the first surface of the other AC adapter.
As a result, the plurality of AC adapters are stably stacked and arranged, and the heat dissipation effect is improved by the recessed portion.

According to the present invention, in the AC adapter having the above structure, the first switching section for turning on / off the connection between the tooth pattern and the AC / DC converting section and the connection between the tooth pattern and the hole section are turned on / off. One or both of the second switching unit is provided. According to this configuration, when the first switching unit is turned on, AC / DC
The converter is energized to supply DC power. When the second switching unit is turned on, the hole is energized and the AC power can be supplied.

Further, the present invention is characterized in that the AC adapter having the above-mentioned structure is provided with a display means for displaying an ON / OFF state of the first switching section or the second switching section.

The present invention is also characterized in that, in the AC adapter having the above-mentioned structure, the display section is composed of a light emitting element.

Further, the present invention is characterized in that, in the AC adapter having the above structure, the second switching section is switched according to a control signal from the outside. With this configuration, when the second switching unit receives a control signal from the outside, the second switching unit is turned on or off.
As the control signal, a signal transmitted by a conductor, a signal transmitted wirelessly, an optical signal, or the like can be used.

Further, the present invention is characterized in that, in the AC adapter having the above-mentioned configuration, a third switching section for turning off the transmission of the control signal input to the AC adapter is provided. With this configuration, when the third switching unit is turned on, the second switching unit is switched according to the control signal, and the connection state between the tooth mold and the hole is changed. When the third switching unit is turned off, the second switching unit is always on or always off regardless of the control signal.

The present invention is also characterized in that, in the AC adapter having the above-mentioned configuration, the second switching section is switched according to the load on the input side or the output side of the AC / DC converting section. With this configuration, when the current flowing through the input side or the output side of the AC / DC conversion unit is large, the second switching unit is turned on, and when the current is small, the second switching unit is turned off.

Further, the present invention is characterized in that, in the AC adapter having the above structure, a third switching portion for turning on / off the connection between the tooth pattern and the hole portion is provided in parallel with the second switching portion. With this configuration, when the third switching unit is turned on, the tooth pattern and the hole are always connected regardless of the switching of the second switching unit. When the third switching unit is turned off, control signals and AC /
The second switching unit is switched by the current flowing through the input side or the output side of the DC conversion unit, and the connection state between the tooth mold and the hole is changed.

Further, the present invention is characterized in that, in the AC adapter having the above structure, the first switching portion is switched according to a load between the tooth mold and the hole.
According to this configuration, the first switching unit is turned on when the current flowing between the tooth mold and the hole is large, and the first switching unit is turned off when the current is small.

Further, the present invention is characterized in that, in the AC adapter having the above structure, a third switching unit for turning on / off the connection between the tooth type and the AC / DC converting unit is provided in parallel with the first switching unit. There is. With this configuration, when the third switching unit is turned on, the tooth profile and the AC / DC converting unit are always connected regardless of the switching of the first switching unit. When the third switching unit is turned off, the first switching unit is switched by the current flowing between the tooth mold and the hole, and the connection state between the tooth mold and the AC / DC conversion unit is changed.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are a plan view and a side view showing the AC adapter of the first embodiment. AC
The external shape of the adapter 1 is formed by accommodating electrical parts such as an AC / DC converter 5 (see FIG. 2) described later in a resin case 6. A cord 2a extends from the housing 6. At the tip of the cord 2a, there is provided a connecting portion 2 including a connector for connecting to an electric device.

The bottom surface (first surface) 6a of the housing 6 is provided with a tooth mold 3 to be inserted into an outlet of a commercial power source. The tooth mold 3 is arranged near the one end surface 6g of the housing 6. On the upper surface (second surface) 6b facing the bottom surface 6a, an A of another electric device different from the electric device connected to the connecting portion 2 is provided.
A hole 4 into which the C plug is inserted is formed. The hole portion 4 is arranged at a position overlapping the tooth mold 3 in plan projection.

FIG. 2 shows a circuit diagram of the AC adapter 1. A for converting AC power to DC power in the housing 6
The C / DC converter 5 is built in. The input side of the AC / DC conversion unit 5 is connected to the tooth mold 3, and the output side thereof is connected to the connection unit 2 via the cord 2a. The hole 4 is branched and connected from a connection line between the tooth mold 3 and the AC / DC converter 5.
It is arranged in parallel with the AC / DC converter 5 with respect to the tooth mold 3.

As a result, when the tooth mold 3 is inserted into the plug socket of the commercial power source, the AC power can be supplied to the electric equipment connected to the hole 4. Therefore, even if the AC adapter 1 is attached to one of the plurality of outlets and the other outlets are closed, other electric devices can be used.

Further, when a plurality of AC adapters are used, since the tooth mold 3 and the hole portion 4 are arranged at the same position in the plane projection, as shown in FIG. The tooth mold 3 is used for the hole 4 of another AC adapter 1 '.
It can be plugged into and tidyly stacked and connected.
At this time, a plurality of AC adapters can be installed at the lower ends of the plurality of outlets corresponding to the outlets. Therefore, since the tooth mold is provided in the vicinity of the one end surface 6g of the housing 6, the weight below the tooth mold 3 is large, and even when a force is applied to the cord 2a and a rotational force acts on the AC adapter 1 ', the AC adapter 1' It is possible to prevent the drop of 1 '.

Next, FIG. 4 is a circuit diagram showing the AC adapter of the second embodiment. For convenience of description, the same parts as those of the AC adapter of the first embodiment shown in FIGS. 1 to 3 are given the same reference numerals. The AC adapter 1 of the present embodiment is provided with the first switching member 11 that turns on / off the connection between the tooth mold 3 and the AC / DC conversion unit 5. An LED 17 is provided that lights up when the first switching member 11 is on.

A second switching member 12 for turning on / off the connection between the tooth mold 3 and the hole 4 is provided.
An LED 19 that lights up when the second switching member 12 is on is provided. Resistors 16 and 18 for voltage adjustment are connected in series to the LEDs 17 and 19. Other configurations are similar to those of the first embodiment.

When the first switching member 11 is turned on, the AC / DC converting section 5 is energized, and DC power is supplied to the electronic equipment connected to the connecting section 2. At this time, LED
The user can easily recognize that 17 is lit and that the AC / DC conversion unit 5 is energized. First switching member 1
When 1 is turned off, the power supply to the AC / DC converter 5 is stopped, and the power supply to the electronic device is stopped. At this time,
The user can easily recognize that the LED 17 is turned off and the energization of the AC / DC converter 5 is stopped.

When the second switching member 12 is turned on, AC power is supplied to the electronic equipment connected to the hole 4. At this time, the user can easily recognize that the LED 19 is lit and the hole 4 is being energized. When the second switching member 12 is turned off, the power supply to the hole 4 is stopped and the power supply to the electronic device is stopped. At this time, L
The user can easily recognize that the ED 19 is turned off and the power supply to the hole 4 is stopped.

According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, when the electronic device connected to the connection unit 2 is stopped, the first switching member 11
When is turned off, useless power is not supplied to the AC / DC conversion unit 5, so that power consumption can be prevented and power saving can be achieved. In addition, when a plurality of electronic devices are branched from the hole portion 4 and connected to the plurality of electronic devices, the second switching member 12 can collectively supply and shut off power to these electric devices.

Incidentally, the first and second switching members 11, 1
As for 2, a seesaw-type or slide-type switch that is manually opened and closed can be used. Further, as will be described later, a switching element such as a transistor, a relay switch or an optical switch can be used.

Next, FIG. 5 is a circuit diagram showing the AC adapter of the third embodiment. For convenience of explanation, the same parts as those of the AC adapter of the second embodiment shown in FIG. 4 described above are designated by the same reference numerals. AC adapter 1 of this embodiment
Is provided with an input unit 7 for receiving a control signal from the outside, and the second switching unit 12 is turned on / off based on the control signal input to the input unit 7. Other configurations are similar to those of the second embodiment. In the figure, the first switching member 11, the LED 17, and the resistor 16 (see FIG. 4 for all) are omitted.

An electronic device 9 is connected to the connecting portion 2 of the AC adapter 1. The electric device 9 is adapted to be capable of transmitting the control signal 8 and outputs the control signal 8 (not shown).
And the input section 7 of the AC adapter 1 are connected. For example, when the second switching unit 12 is composed of a switching element such as a transistor, the second switching unit 12 is turned on when the Hi-level control signal 8 is transmitted from the electric device 9. Further, when the Lo level control signal 8 is transmitted from the electric device 9, the second switching unit 12 is turned off.

As a result, when the electric device 9 is driven, the Hi-level control signal 8 can be transmitted to drive the electronic device connected to the hole 4. Further, when the electric device 9 stops, the Lo level control signal 8 can be transmitted to stop the electronic device connected to the hole 4. Therefore, each electric device connected to the connecting portion 2 and the hole 4 can be interlocked.

The control signal 8 may be wirelessly transmitted and received by the input unit 7. Further, the control signal 8 composed of an optical signal may be transmitted and received by the input unit 7. Further, the second switching unit 12 is composed of an optical switch and the input unit 7
Alternatively, the control signal 8 composed of an optical signal may be directly received by the second switching unit 12. Further, the control signal 8 input to the input unit 7 may be transmitted from a device other than the electric device 9 connected to the connection unit 2.

According to this embodiment, the same effects as those of the first and second embodiments can be obtained. In addition, the driving of the electric device connected to the hole 4 can be easily controlled by the control signal from the outside. When the control signal 8 transmitted from the electric device 9 connected to the connection unit 2 is received by the input unit 7, each electric device connected to the connection unit 2 and the hole 4 can be interlocked.

Next, FIG. 6 is a circuit diagram showing an AC adapter of the fourth embodiment. For convenience of explanation, the same parts as those of the AC adapter of the third embodiment shown in FIG. 5 described above are designated by the same reference numerals. The difference from the third embodiment is that a third switching unit 13 for turning on / off the connection between the input unit 7 and the second switching unit 12 is provided. Other points are the same as in the third embodiment.

When the third switching section 13 is turned on,
Similar to the third embodiment described above, the second switching unit 12 can be switched on and off according to the control signal 8 input to the input unit 7. When the third switching unit 13 is turned off, the second switching unit 12 can be normally closed, for example, regardless of the control signal 8 input to the input unit 7. Therefore, in addition to the effects of the third embodiment,
By switching the third switching unit 13, it is possible to switch between a state in which the electric device connected to the hole 4 is always energized and a state in which the electric device 9 connected to the connecting unit 2 can be interlocked.

Next, FIG. 7 is a circuit diagram showing an AC adapter of the fifth embodiment. For convenience of explanation, the same parts as those of the AC adapter of the third embodiment shown in FIG. 5 described above are designated by the same reference numerals. The difference from the third embodiment is that a third switching unit 13 for turning on / off the connection between the tooth mold 3 and the hole 4 is provided in parallel with the second switching unit 12. Other points are the same as in the third embodiment.

When the third switching section 13 is off,
Similar to the third embodiment described above, the second switching unit 12 can be switched on and off according to the control signal 8 input to the input unit 7. When the third switching unit 13 is turned on, the connection between the tooth mold 3 and the hole 4 is always turned on regardless of the switching of the second switching unit 12 by the control signal 8 input to the input unit 7. Therefore, in addition to the effect of the third embodiment, by switching the third switching unit 13, it is possible to link the state in which the electric device connected to the hole 4 is always energized and the electric device 9 connected to the connecting unit 2. You can switch between states.

Next, FIG. 8 is a circuit diagram showing an AC adapter of the sixth embodiment. For convenience of explanation, the same parts as those of the AC adapter of the second embodiment shown in FIG. 4 described above are designated by the same reference numerals. The difference from the second embodiment is the second
The switching unit 12 is composed of an operating unit that opens and closes the contacts of the relay 15, and the coil unit 15 a of the relay 15 is A
This is a point provided on the output side of the C / DC converter 5.
Other points are the same as in the second embodiment. In the figure, the first switching member 11, the LED 17, and the resistor 16 (see FIG. 4 for all) are omitted.

When the load on the output side of the AC / DC converter 5 becomes large, a large amount of current flows through the coil 15a of the relay 15. As a result, the contacts of the relay 15 are closed and the second switching unit 12 is turned on. Also, AC
When the load on the output side of the / DC converter 5 decreases, the current flowing through the coil 15a of the relay 15 decreases. As a result, the contact of the relay 15 is opened and the second switching unit 12 is turned off.

As a result, in addition to the effects of the second embodiment, it is possible to control the driving of the electric equipment connected to the hole 4 in accordance with the load on the output side of the AC / DC converter 5. The load on the output side of the AC / DC conversion unit 5 increases / decreases due to, for example, driving and stopping of an electric device connected to the connection unit 2. Therefore, the electric device connected to the connecting portion 2 and the electric device connected to the hole 4 can be easily interlocked. The coil portion 15a of the relay 15 is set to AC / DC.
It may be provided on the input side of the conversion unit 5.

Next, FIG. 9 is a circuit diagram showing an AC adapter of the seventh embodiment. For convenience of explanation, the same parts as those of the AC adapter of the sixth embodiment shown in FIG. 8 described above are designated by the same reference numerals. The difference from the sixth embodiment is that a third switching unit 13 for turning on / off the connection between the tooth mold 3 and the hole 4 is provided in parallel with the second switching unit 12. The other points are the same as in the sixth embodiment.

When the third switching unit 13 is off,
As in the sixth embodiment, the second switching unit 12 can be switched on and off according to the load on the output side of the AC / DC conversion unit 5. When the third switching unit 13 is turned on, the second load due to the load on the output side of the AC / DC conversion unit 5
Regardless of the switching of the switching unit 12, the connection between the tooth mold 3 and the hole 4 is always on. Therefore, in addition to the effect of the sixth embodiment, by switching the third switching unit 13, a state in which the electric device connected to the hole 4 is constantly energized and a state in which the electric device connected to the connecting unit 2 can be interlocked. You can switch between and.

Next, FIG. 10 is a circuit diagram showing an AC adapter of the eighth embodiment. For convenience of explanation, the same parts as those of the AC adapter of the second embodiment shown in FIG. 4 described above are designated by the same reference numerals. The difference from the second embodiment is that the first switching unit 11 is composed of an operating unit that opens and closes the contacts of the relay 20, and the coil unit 20 a of the relay 20 is provided between the tooth mold 3 and the hole 4. That is the point. Other points are the same as in the second embodiment. In the figure, the second switching member 12, the LED 19 and the resistor 1
8 (all see FIG. 4) is omitted.

When the load between the tooth mold 3 and the hole 4 becomes large, a large amount of current flows through the coil portion 20a of the relay 20. As a result, the contact of the relay 20 is closed and the first
The switching unit 11 is turned on. Further, when the load between the tooth mold 3 and the hole portion 4 becomes small, the current flowing through the coil portion 20a of the relay 20 decreases. This allows
The contact of the relay 20 opens and the first switching unit 11 turns off.

As a result, in addition to the effects of the second embodiment, it is possible to control the driving of the electric equipment connected to the connecting portion 2 in accordance with the load between the tooth mold 3 and the hole 4. The load between the tooth mold 3 and the hole 4 is increased or decreased by, for example, driving or stopping an electric device connected to the hole 4. Therefore,
The electric device connected to the hole 4 and the electric device connected to the connecting portion 2 can be easily linked.

Next, FIG. 11 is a circuit diagram showing an AC adapter of the ninth embodiment. For convenience of explanation, FIG.
The same parts as those of the AC adapter of the eighth embodiment shown in are denoted by the same reference numerals. The difference from the eighth embodiment is that
The third switching unit 14 for turning on / off the connection between the tooth profile 3 and the AC / DC conversion unit 5 is provided in parallel with the first switching unit 11. The other points are the same as in the eighth embodiment.

When the third switching section 14 is off,
Similarly to the above-described eighth embodiment, the first switching unit 11 can be switched on and off according to the load between the tooth mold 3 and the hole 4. When the third switching unit 14 is turned on, regardless of the switching of the first switching unit 11 due to the load between the tooth mold 3 and the hole 4, the tooth mold 3 and the AC / D
The connection with the C converter 5 is always on. Therefore, in addition to the effect of the eighth embodiment, by switching the third switching unit 14, a state in which the electric device connected to the connection unit 2 is constantly energized and a state in which the electric device connected to the hole 4 can be interlocked You can switch between and.

Next, FIGS. 12A and 12B are a plan view and a side view showing the AC adapter of the tenth embodiment. For convenience of description, the same parts as those of the AC adapter of the first embodiment shown in FIGS. 1 (a) and 1 (b) described above are designated by the same reference numerals. In this embodiment, the bottom surface of the housing 6 (first
In the figure, the surface 6a is provided with recesses 6c at its left and right ends.

A hole 4 is formed on the upper surface (second surface) 6b facing the bottom surface 6a, and a convex portion 6d projecting from the upper surface 6b is formed at the end of the housing 6. The convex portion 6d is formed at the same position as the concave portion 6c in a plane projection. A recess 6e is formed between the protrusion 6d and the hole 4 by recessing the housing 6 in the direction from the top surface 6b to the bottom surface 6a.

When a plurality of AC adapters 1 are used, as shown in FIG. 13, the top surface 6b of one AC adapter 1 comes into contact with the bottom surface of another AC adapter 1 ', and
The tooth mold 3 of another AC adapter 1'can be inserted into the hole 4 of the C adapter 1 and can be connected by orderly stacking them as in the first embodiment.

Further, since the concave portion 6c and the convex portion 6d are provided at the same position in the plane projection, one AC adapter 1
The convex portion 6d is fitted into the concave portion 6c of another AC adapter 1 ', so that the plurality of AC adapters 1 and 1'can be stably stacked. Further, a space is formed by the recessed portion 6e between the one AC adapter 1 and the bottom surface 6a of the other AC adapter 1 ', and the AC adapter 1,
The heat radiation effect of 1'can be improved. In addition, in this embodiment, the circuit configuration of the AC adapters 1 and 1 ′ can be the same as that of any one of the first to ninth embodiments.

[0056]

According to the present invention, there are provided a connecting portion for supplying a DC power source to one electric device, and a hole portion for conducting an AC power source to another electric device by being electrically connected to a tooth type plugged into a plug socket. Since it is provided, even if the AC adapter is attached to one of the plurality of plug sockets and the other plug sockets are closed, another electric device can be used.

Further, according to the present invention, since the tooth pattern and the hole are formed at the same position in the plane projection of the first and second surfaces of the housing which face each other, when a plurality of AC adapters are used, The teeth of one AC adapter can be inserted into the holes of the other AC adapter to form an orderly stack for connection. Further, a plurality of AC adapters can be installed at a position corresponding to the bottom outlet among the plurality of outlets. Therefore, if a tooth mold is provided near one end surface of the housing, the weight below the tooth mold is large, and
It is possible to prevent the AC adapter from falling off even when a turning force is applied to the adapter.

Further, according to the present invention, since the concave portion and the convex portion are provided at the same position in the plane projection of the first and second surfaces, when one or more AC adapters are used,
By fitting the convex portion of the C adapter into the concave portion of another AC adapter, a plurality of AC adapters can be stably stacked. Furthermore, since the recessed portion is provided between the convex portion and the hole portion, a space is formed between the one AC adapter and the other AC adapter by the recessed portion, and the heat dissipation effect of the AC adapter is improved. be able to.

Further, according to the present invention, one or both of the first switching section for turning on / off the connection between the tooth type and the AC / DC converting section and the second switching section for turning on / off the connection between the tooth type and the hole section are provided. Since it is provided, if the first switching member is turned off when the electronic device connected to the connection part is stopped, useless power is not supplied to the AC / DC conversion part, power consumption is prevented, and power is saved. Can be achieved. Further, the second switching member can collectively supply and shut off power to a plurality of electronic devices connected to the holes.

Further, according to the present invention, since the display means for displaying the on / off state of the first switching section or the second switching section is provided, the switching state can be easily recognized.

Further, according to the present invention, since the display portion is composed of the light emitting element, it is possible to easily display the switching state.

Further, according to the present invention, since the second switching portion is switched in response to the control signal from the outside, the driving of the electric device connected to the hole can be easily controlled by the control signal from the outside. Further, when the control signal is transmitted by the electric device connected to the connecting portion, each electric device connected to the connecting portion and the hole can be interlocked.

Further, according to the present invention, since the third switching portion for turning off the transmission of the control signal input to the AC adapter is provided, the switching of the third switching portion allows the electrical equipment connected to the hole to be connected. The state of always energizing,
It is possible to switch between a state in which the electric device connected to the connection unit can be interlocked with.

Further, according to the present invention, since the second switching section is switched according to the load on the input side or the output side of the AC / DC converting section, the electric power is changed according to the load increase / decrease caused by the electric equipment connected to the connecting section. The device and another electric device connected to the hole can be easily linked.

Further, according to the present invention, since the third switching portion for turning on / off the connection between the tooth pattern and the hole portion is provided in parallel with the second switching portion, the third switching portion is switched to be connected to the hole portion. It is possible to switch between a state in which the electric device to be constantly energized and a state in which the electric device connected to the connecting portion can be interlocked.

Further, according to the present invention, the first switching portion is switched according to the load between the tooth mold and the hole, so that the electric device connected to the hole can increase or decrease the load depending on the load. , It is possible to easily interlock with other electric devices connected to the connecting portion.

Further, according to the present invention, since the third switching section for turning on / off the connection between the tooth type and the AC / DC converting section is provided in parallel with the first switching section, the connection section is switched by switching the third switching section. It is possible to switch between a state in which the electric device connected to the terminal is always energized and a state in which the electric device connected to the hole can be linked.

[Brief description of drawings]

FIG. 1 is a plan view and a side view showing an AC adapter according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing the AC adapter of the first embodiment of the present invention.

FIG. 3 is a side view showing a state in which the AC adapters according to the first embodiment of the present invention are stacked.

FIG. 4 is a circuit diagram showing an AC adapter according to a second embodiment of the present invention.

FIG. 5 is a circuit diagram showing an AC adapter according to a third embodiment of the present invention.

FIG. 6 is a circuit diagram showing an AC adapter according to a fourth embodiment of the present invention.

FIG. 7 is a circuit diagram showing an AC adapter according to a fifth embodiment of the present invention.

FIG. 8 is a circuit diagram showing an AC adapter according to a sixth embodiment of the present invention.

FIG. 9 is a circuit diagram showing an AC adapter according to a seventh embodiment of the present invention.

FIG. 10 is a circuit diagram showing an AC adapter according to an eighth embodiment of the present invention.

FIG. 11 is a circuit diagram showing an AC adapter according to a ninth embodiment of the present invention.

FIG. 12 is a plan view and a side view showing an AC adapter according to a tenth embodiment of the present invention.

FIG. 13 is a side view showing a state in which the AC adapters according to the tenth embodiment of the present invention are stacked.

[Explanation of symbols]

1,1 'AC adapter 2 connection 3 teeth 4 holes 5 AC / DC converter 6 housing 6a Bottom surface (first surface) 6b Upper surface (second surface) 6c recess 6d convex part 6e Recessed part 7 Input section 8 control signals 9 electrical equipment 11 First switching unit 12 Second switching unit 13, 14 Third switching unit 15, 20 relay 16, 18 resistance 17, 19 LED

Claims (12)

[Claims] 1. An AC / D for converting an AC power supply into a DC power supply.
A C converter, and a housing that houses the AC / DC converter,
A tooth type which is inserted into an outlet of a commercial power source to supply AC power to the AC / DC conversion unit, and a connection unit which supplies DC power converted by the AC / DC conversion unit to one electric device. An AC, which is formed so that an AC plug of an electric device can be inserted therein, and has a hole portion that is electrically connected to the tooth mold and can supply AC power to another electric device.
adapter. 2. The tooth profile and the hole are respectively formed on the first and second surfaces of the casing which face each other, and projected on the first surface so that the tooth profile and the hole are aligned with each other. The AC adapter according to claim 1, wherein 3. A concave portion formed on the first surface, a convex portion projecting from the second surface and formed at the same position as the concave portion by projecting on the first surface, the convex portion and the hole portion. The AC adapter according to claim 2, further comprising: a recessed portion that is formed by recessing from the second surface to the first surface side between and. 4. One or both of a first switching unit that turns on and off the connection between the tooth profile and the AC / DC conversion unit and a second switching unit that turns on and off the connection between the tooth profile and the hole. The AC adapter according to claim 1, wherein the AC adapter is provided. 5. The AC adapter according to claim 4, further comprising a display unit that displays an on / off state of the first switching unit or the second switching unit. 6. The AC adapter according to claim 5, wherein the display unit includes a light emitting device. 7. The AC adapter according to claim 4, wherein the second switching unit is switched according to a control signal from the outside. 8. The AC adapter according to claim 7, further comprising a third switching unit that turns off the transmission of the control signal input to the AC adapter. 9. The AC adapter according to claim 4, wherein the second switching unit is switched according to a load on the input side or the output side of the AC / DC conversion unit. 10. The AC adapter according to claim 7, wherein a third switching unit that turns on and off the connection between the tooth pattern and the hole is provided in parallel with the second switching unit. . 11. The AC adapter according to claim 4, wherein the first switching unit is switched according to a load between the tooth pattern and the hole. 12. The AC adapter according to claim 11, wherein a third switching unit that turns on / off the connection between the tooth type and the AC / DC conversion unit is provided in parallel with the first switching unit.