JP4704294B2 - Power outlet with power supply voltage confirmation function - Google Patents

Description

  The present invention relates to a power outlet that shares rated AC100V and AC200V, and more particularly to a power outlet with a power supply voltage confirmation function that supplies power to a load after confirming that the power supply voltage supplied to the outlet is a desired voltage.

  In construction sites where information processing devices or communication devices are installed, there are mixed power outlets that supply AC 100 V or AC 200 V input voltage. Connection error of worker installing power outlet, for example, mistake of connecting AC200V power supply to primary side of power outlet supplying AC100V input voltage, or mistake of plugging into power outlet by user, for example There is a problem that the AC100V device is connected to the power outlet supplying AC200V and the device is damaged due to a mistake that the user mistakenly inserts the plug connected to the AC100V device into the power outlet supplying AC200V. As a result, there arises a serious problem that the power supply breaker connected to the primary side of the power outlet is cut off and the power supply to other devices connected to the power supply breaker is stopped.

  On the other hand, in general homes, there are an increasing number of devices that require high AC power supply voltage, such as air conditioning equipment (air conditioners), and AC100V and AC200V shared power outlets are mixed in the house. It is essential to prevent misconnection of equipment to the outlet. However, at present, only a matter of alerting the user of the power outlet to prevent the erroneous connection by sticking a label indicating the supply voltage AC100V or AC200V of the power outlet to the power outlet is provided. Also, a label indicating an incorrect voltage may be attached. Therefore, there arises a problem that the device is damaged due to the erroneous connection of the device to the power outlet by the user. An apparatus that solves such a problem is disclosed in Patent Document 1.

  The power protection device for pachinko machines described in Patent Document 1 supplies power to the load side as it is when a rated input voltage is applied, and supplies power to the load side when an input voltage exceeding the rating is applied. An overvoltage protection device for interrupting the power supply is interposed between the power supply terminal and the power supply plug.

Japanese Patent Laid-Open No. 10-12927 (refer to claims, paragraphs [0010] to [0017], FIG. 1, FIG. 2 and abstract)

  However, the power protection device for the pachinko machine described in Patent Document 1 cuts off the power supply to the load side when an input voltage exceeding the rating is applied, but the power protection device is connected to a power outlet that supplies the rated voltage. It is impossible to know whether the input voltage from the power outlet to the power protection device is rated or exceeds the rating until the power outlet is connected, that is, the power outlet is rated voltage until the power protection device is connected to the power outlet. Therefore, there is a problem that it is difficult to find a power outlet that supplies a rated voltage.

  Therefore, the present invention solves the above-mentioned problems, can confirm whether the power outlet supplies the rated voltage, and after confirming the supply voltage from the power outlet to the load (equipment), the supply voltage becomes the rated voltage. Then, it aims at providing the power outlet with a power supply voltage confirmation function which can connect a load (apparatus).

A power outlet with a power supply voltage confirmation function according to the first embodiment of the present invention that achieves the above object is a power supply voltage for confirming an input voltage of a supplied power supply and supplying the power supply to the outside in accordance with the magnitude of the input voltage A power outlet with a confirmation function,
An input voltage detector for detecting the input voltage;
An electrode for supplying power to the outside of the power outlet;
Voltage setting means for setting a desired voltage in advance;
When the input voltage detected by the input voltage detector matches the voltage set by the voltage setting means, the electrode is opened so that power can be supplied to the outside, and when the input voltage does not match, the shutter closes the electrode; ,
Means for restricting or releasing the operation of the shutter;
It is characterized by providing.

The power outlet with the power supply voltage confirmation function includes display means for indicating whether or not the input voltage is a voltage set by the voltage setting means in response to the input voltage detection signal.
The power outlet with the power supply voltage confirmation function includes means for sounding a warning sound when the input voltage is not a voltage set by the voltage setting means in response to the input voltage detection signal.

  According to the present invention, when the input voltage is detected and different from the input voltage value set in the power outlet itself in advance, the power outlet electrode is closed with the shutter and the power receiving plug connected to the load (equipment) is inserted. Therefore, it is possible to prevent user's erroneous operation.

  According to the present invention, the input voltage detection circuit detects an input voltage, for example, 100V or 200V, and the detection signal causes the LED and / or the buzzer to visually and / or audibly input the desired input voltage to the user. It is effective in preventing erroneous operation by informing the user whether or not to alert the user.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing an embodiment of a power outlet box with a power supply voltage confirmation function according to the present invention, and (A) is a plan view of the power outlet box cut from the horizontal direction and viewed from directly above. (B) is a plan view of the power outlet box with a lid, and (C) is a perspective view of the shutter shown in (B). 2 to 4 are views showing the inside of the power outlet box shown in FIG. 1, (A) is a perspective view inside the power outlet box, and (B) is a plan view inside the power outlet box. 3 is a view showing the inside of the power outlet box shown in FIG. 2 with the shutter removed, and FIG. 4 is a view showing the inside of the power outlet box shown with the shutter shown in FIG. 3 further removed with the solenoid removed. is there.

  Hereinafter, the internal configuration of the power outlet box 10 according to the embodiment of the present invention shown in FIGS. 1A and 1B as a whole will be described with reference to FIGS. Inside the power outlet box 10, the electrodes 1 and 2 are arranged in parallel, and shutters 3 and 4 are provided between the electrodes 1 and 2. The shutters 3 and 4 are arranged so as to be rotatably supported by the rotation shafts 3-1 and 4-1 and to be held in a rotation start state by the springs 5 and 6 surrounding the outer periphery of the rotation shafts 3-1 and 4-1. Further, smooth portions 3-2 and 4-2 are provided in the portions of the shutter rotation shafts 3-1 and 4-1, and the rotation is restricted by pressing with the solenoids 7 and 8.

  An input voltage detection circuit (not shown) is provided inside the outlet 10, and an output signal is obtained when AC 100V is input. The solenoids 7 and 8 are actuated by the AC100V detection signal to unlock the smoothing sections 3-2 and 4-2 of the shutter rotating shafts 3-1, 4-1. When AC200V is detected, the solenoids 7 and 8 do not work, so the shutters 3 and 4 are locked.

  In the case of an input voltage of AC 200 V, an AC 200 V detection signal is obtained from the input voltage detection circuit described below with reference to FIG. 5, and lamps 21 and 22 are used to display lamps. Notice that it is AC200V.

  Further, from the AC200V detection signal, the buzzer 25 is sounded in the same manner as the lamp display to prompt the user to pay attention to the voltage.

  5 is a diagram showing an electric circuit provided in the power outlet box shown in FIG. 1, (A) is a diagram showing a control circuit for the operation of the shutter, and (B) is a diagram showing a display circuit for a rated voltage. (C) is a diagram showing an alarm circuit.

  The shutter operation control circuit shown in FIG. 5A has an input voltage detection circuit 50. The input voltage detection circuit 50 detects the input voltage to the outlet box. As a first embodiment, AC100V or AC200V is determined based on the set value of the switch SW1 for selecting AC100V or AC200V, and the solenoid is driven.

  5A, the (1) side of the setting switch SW1 indicates the side to be switched when the user of the outlet selects AC 100V and the (2) side selects AC 200V. 5A to 5C, PLG indicates a plug, REC indicates an outlet, SHT indicates a shutter, RL1 indicates a relay coil, rl1 indicates a relay contact of the coil RL1, and L1 indicates a solenoid. Ri, limiting resistor, i1, i2 current, D1 rectifier, ZD1 constant voltage (Zener) diode, LED1 green light emitting diode, LED2 red light emitting diode, R1 to solenoid L1 R2, R3, and R4 are resistors, and BZ1 is a buzzer. Here, the relay coil RL1 and the solenoid L1 do not operate at AC 100V, but operate at AC 200V.

  The solenoid L1 performs electromagnetic control of the shutter SHT. The current limiting resistor R1 suppresses the current of the solenoid L1 at 200V AC.

  When the SW1 setting is (1) and the input voltage received and received from the plug PLG is 100V AC, the solenoid L1 is excited and operated by the current path of the current i1 to release the shutter SHT lock, and the power received from the PLG is received. When the input voltage is 200V AC, the current path of the current i1 is cut off by the operation of the relay RL1, the solenoid L1 is de-energized and the shutter SHT remains locked.

  Also, when the setting of SW1 is (2) and the input voltage received and received from the plug PLG is 200V AC, the solenoid L1 is operated by the path of the current i2 to release the shutter SHT lock, and the input from the plug PLG is received. When the input voltage is AC 100 V, the relay RL1 does not operate and the current path of the current i2 is cut off, the solenoid L1 is de-energized and does not operate, and the shutter SHT remains locked.

  Here, the power supply lines 51 and 52 input from the plug PLG and received are connected to the electrode of the outlet REC, and the rated voltage display shown in FIG. The alarm circuit shown in FIG. 5C is connected to the circuit.

  In the second embodiment shown in FIG. 5B, the state of the input voltage by lamp display is shown. The Zener voltage of the constant voltage diode ZD1 is set to about the middle of 100 to 200 VAC.

  The green light-emitting diode LED1 and the red light-emitting diode LED2 that are displays are displays that indicate that the input voltages are AC100V and AC200V, respectively. When the input voltage received from the plug PLG is AC100V or more, the LED1 is turned on with the amount of electricity flowing, indicating that the received voltage is AC100V or more, and when the input voltage is 200V, the LED2 is turned on with the amount of electricity being lit. Indicates AC200V.

In the third embodiment shown in FIG. 5C, the state of the input voltage is indicated by the ringing of the buzzer BZ1, which is an alarm device. R4 shown in FIG. 5C indicates a current limiting resistor to the buzzer BZ1. When the setting of SW1 is (1) and the input voltage received and received from the plug PLG is 100V AC, the current path to the buzzer BZ1 is cut off and BZ1 does not ring.
When the input voltage input from the plug PLG and received is 200V AC, the current path of the buzzer BZ1 is formed via R4 by the operation of the relay RL1, and it rings.

  When the SW1 setting is (2) and the input voltage received and received from the plug PLG is 200V AC, the current path is cut off and the buzzer BZ1 does not sound, and the input voltage received and received from the plug PLG is 100V AC. At that time, the relay RL1 does not operate, and the current path of the buzzer BZ1 is formed to sound.

  The input voltage detection circuit 50 in the shutter operation control circuit shown in FIG. 5A provided in the power outlet box 10 with the power supply voltage confirmation function according to the present invention shown in FIG. And a detection signal is obtained. Structures (shutters) 3 and 4 for closing the electrodes 1 and 2 shown in FIGS. 1 to 4 of the outlet REC shown in FIG. 5A are provided in the power outlet box 10. When a predetermined voltage is applied, the shutters 3 and 4 are unlocked. In addition, upon receiving the detection signal, the user is visually alerted by the lamps 21 and 22. In addition, upon receiving the detection signal, the buzzer 25 sounds to alert the user.

  In the above embodiment, the example in which the setting voltage is selected from either AC100V or AC200V has been described, but the present invention is not limited to this, and the setting voltage is, for example, any of AC115V, AC230V, or AC460V. The shutter can be operated so that an external load (device) can be connected to the electrode of the power outlet only when the selected voltage is input to the power outlet.

  In the above description, the power outlet for supplying AC power has been described as an embodiment of the present invention. However, according to the present invention, it is needless to say that a power outlet for supplying DC power can be provided with the same configuration as described above.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the power outlet box with a power supply voltage confirmation function by this invention, (A) is the top view which cut | disconnected the power outlet box in the horizontal direction and was seen from right above, (B) It is a top view in the state where the power outlet box was covered, and (C) is a perspective view of the shutter shown in (B). It is a figure which shows the inside of the power outlet box shown in FIG. 1, (A) is a perspective view inside a power outlet box, (B) is a top view inside a power outlet box. It is a figure which removes a shutter, and shows the inside of the power outlet box shown in FIG. 2, (A) is a perspective view which shows the inside of the power outlet box, (B) is a top view which shows the inside of the power outlet box. . FIG. 4 is a view showing the interior of the power outlet box shown with the shutter shown in FIG. 3 removed, and further the solenoid removed, (A) is a perspective view showing the inside of the power outlet box, and (B) is the power outlet. It is a top view which shows the inside of a box. It is a figure which shows the electric circuit provided in the power outlet box shown in FIG. 1, (A) is a figure which shows the control circuit of operation | movement of a shutter, (B) is a figure which shows the display circuit of a rated voltage, C) is a diagram showing an alarm circuit.

Explanation of symbols

1, 2 Electrode 3, 4 Shutter 5, 6 Spring 7, 8 Solenoid 10 Outlet box 50 Input voltage detection circuit

Claims (3)

A power outlet with a power supply voltage confirmation function for confirming the input voltage of the supplied power supply and supplying the power supply to the outside according to the magnitude of the input voltage,
An input voltage detector for detecting the input voltage;
An electrode for supplying power to the outside of the power outlet;
Voltage setting means for setting a desired voltage in advance;
When the input voltage detected by the input voltage detection unit matches the voltage set by the voltage setting means, the electrode is opened so that power can be supplied to the outside, and when the input voltage does not match, the electrode is closed. And a shutter to
Means for restraining or releasing the action of the shutter;
A power outlet with a power supply voltage confirmation function. Display means for indicating whether or not the input voltage is a voltage set by the voltage setting means in response to the input voltage detection signal;
The power outlet according to claim 1. Means for sounding a warning sound when the input voltage is not a voltage set by the voltage setting means in response to a detection signal of the input voltage;
The power outlet according to claim 1 or 2.

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