JPH073587Y2 - Voltage conversion outlet - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a voltage conversion outlet, and more particularly to a 100V / 200V shared outlet used for both 100V and 200V devices.

[Prior Art] Conventionally, generally, two types of low-voltage wiring in a home are used, which are a 100V single-phase two-wire system and a 100V / 200V single-phase three-wire system, depending on the magnitude of power demand.

However, due to the difference in rated voltage with this existing wiring system, the current situation is that 200V devices that are expected to be commercialized in the future cannot be used.

Therefore, in order to enable this use, conventionally, by extending the single-phase three-wire type wiring from the switchboard further and wiring it to an outlet as it is,
It was designed to supply two types of voltage, 0V and 200V.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional techniques, it is necessary to newly perform wiring work from the switchboard to the outlet, and in many cases where existing wiring is embedded in a wall, etc. There is a problem in terms of cost or aesthetics of the room because the wiring must be re-wired by destroying the above, or wiring is performed outside the wall.

This invention was made in order to solve the above-mentioned problems, and its purpose is to use 100V without changing the existing wiring significantly, at low cost and without affecting the aesthetics of the room. It is to provide a voltage conversion outlet that enables simultaneous use of a device and a 200V device.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a device for low voltage, which is provided on a side surface of a box and has a low-voltage connecting electrode to which a low-voltage plug is detachably connected. An outlet, a step-down device that is housed in the box, is connected between the high-voltage wiring and the low-voltage connection electrode, and lowers the high voltage to a low voltage, and is arranged near the low-voltage inlet. Is
And a switch means for controlling opening / closing of the step-down device by inserting / removing the low-voltage plug into / from the low-voltage insertion port.

In addition, the switch means, a contact connected to the step-down device,
The contacts are connected to the high-voltage wiring, and both contacts are separated from each other on the line where the plug piece of the low-voltage plug is inserted, and the inserted plug pieces are arranged at positions where they can come into contact with each other. Preferably.

Further, the switch means has a pressing member which is always protruded from the side surface of the box on the insertion port side by an urging member and which is supported so as to reciprocate in the insertion direction of the low-voltage plug, and is opened and closed by the pressing member. It may be composed of an opening / closing contact.

[Operation] When the plug is inserted into the low-voltage insertion port of the box that is distributed at the high voltage as described above, the step-down device is excited by the switching operation of the switch means, and the step-down device is inserted from the insertion port. A low voltage stepped down by is supplied.

Then, when the inserted plug is removed from the insertion port, the switch means is turned off and the step-down device is demagnetized.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the box 2 buried in the wall 1
2 from the switchboard (not shown) via the indoor wiring 3a, 3b
00V voltage is wired. A box-shaped insertion port 5 for 200V is provided above the output outlet portion 4 of the box 2, and the pair of terminal metal fittings 6a and 6b connected to the wirings 3a and 3b are provided in the insertion port 5 respectively. Is provided. Then, a 200V plug 7 is inserted into the insertion port 5, and the plug pieces 8a, 8b contact the terminal fittings 6a, 6b to supply 200V voltage.

A 100V insertion port 9 as a low voltage insertion port is provided in the lower part of the output outlet section 4, and a transformer 10 as a step-down device is arranged inside the insertion port 9.
The transformer 10 has one end connected to the wiring 3a, a terminal metal fitting 12a as a low-voltage connection electrode connected to the point 11, and the other end similarly provided with a low-voltage connection electrode. The terminal fitting 12b is connected. Then, the terminal fittings 12a, 12b are inserted into the insertion port 9
It is arranged so that it can be inserted into the plug pieces 14a and 14b of the 00V plug 13.

Further, as shown in FIGS. 3 and 4, a terminal metal fitting 12c connected to the wiring 3b is provided behind the terminal metal fitting 12b, and the terminal metal fitting 12c is on a line on which the plug piece 14b of the plug 13 is inserted. And is arranged at a position where the plug piece 14b contacts when the plug 13 is inserted. And both these terminal fittings 12
b and 12c serve as contacts and constitute switch means.

Now, the operation of the outlet configured as described above will be described. In the state shown in FIG. 3, the output outlet section 4 in the box 2 is constantly supplied with a voltage of 200 V through the wirings 3a and 3b.

Therefore, here, the 200V plug 5 for the 200V plug 7
When the plug is inserted, the plug pieces 8a and 8b come into contact with the terminal fittings 6a and 6b, respectively, and thereby the 200V voltage is supplied, so that the 200V device can be used.

Next, when the 100V plug 13 is inserted into the 100V insertion port 9, one plug piece 14a of the plug 13 is brought into contact with the terminal fitting 12a. At the same time, the other plug piece 14b
Is brought into contact with the terminal fitting 12b and the terminal fitting 12c, which are contacts, and the terminal fittings 12b and 12c are closed.

Then, the transformer 10 is excited by this, and the transformer 10 receives 100V from the 200V voltage supplied through the wirings 3a and 3b.
Step down to voltage. Therefore, the terminal fitting 12a and the terminal fitting 1
100V voltage is supplied from 2b through the plug pieces 14a and 14b, and the device for 100V can be used.

Then, when the 100V plug 13 in the inserted state is removed from the insertion port 9 after the end of use of the device, the terminal fitting 12 serving as a contact
The closed state between b and 12c is released, and the transformer 10 is demagnetized.

As described above, in this embodiment, unlike the prior art, there is no need to newly perform indoor wiring work from the switchboard to the outlet, and there is no need to destroy a wall or wire outside the wall, which is advantageous in terms of cost and interior aesthetics. Problem does not occur.

And, while 200V voltage can be constantly supplied from the 200V insertion port 5, a 100V plug can be supplied to the 100V insertion port 9.
When 13 is inserted, the switch means is turned on and the transformer
Since 10 is excited and the transformer 10 steps down the voltage of 200V to 100V, 100V voltage can be supplied from the 100V insertion port 9.

Further, since the transformer 10 has a lossless structure in which the voltage is applied and excited only when the 100V plug 13 is inserted into the 100V insertion port 9, the operating cost can be reduced.

Therefore, it is possible to use both the 100V device and the 200V device simultaneously from the outlet box 2 which has a simple configuration and is inexpensive and easily distributed with 200V.

Next, a second embodiment of this invention will be described with reference to FIG.

The same or corresponding members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 5, at a position corresponding to the 100V insertion port 9 of the output outlet portion 4, a pressing member 16 having a locking portion 15 formed in an intermediate portion is provided with a support hole 17 at one end 16a thereof. It is pierced and supported so as to be able to reciprocate in the insertion direction of the plug 13.

Further, the pressing member 16 is always urged from the support hole 17 from the support hole 17 by a coil spring 18 as an urging member in a protruding direction, and the locking portion 15 is locked to the inner peripheral edge of the support hole 17. Thus, the protruding state from the end face of the insertion port 9 is maintained.

On the other hand, in the insertion port 9, a normally-open contact 19 is provided on the moving line of the pressing member 16 at a position where it can contact the other end 16b of the pressing member 16, and the contact 19 has one end through the transformer 10. It is connected to the wiring 3a and the other end is connected to the wiring 3b.

The pressing member 16 and the contact 19 constitute a switch means, and the switch means has a normally open contact 19 as a pressing member.
The other end 16b of 16 is pressed to be turned on, and a voltage is applied to the transformer 10.

Now, when the 100V plug 13 is inserted into the 100V insertion port 9 in the state shown in FIG. 5, the front end face of the plug 13 is pressed by the pressing member.
When the one end 16a of 16 is contacted and the plug 13 is further inserted, the pressing member 16 is moved in the direction of the contact 19 against the biasing force of the coil spring 18.

Then, when the plug 13 is completely inserted into the insertion port 9, the other end 16b of the pressing member 16 presses the contact 19, and the contact 19 is operated.

Further, when the inserted plug 13 is pulled out from the insertion port 9, the pressing member 16 is pressed by the urging force of the coil spring 18 to the one end 16a.
Is moved in a direction of projecting from the end face of the insertion port 9.
At the same time, the other end 16b of the pressing member 16 separates from the contact 19, and the contact 19 is turned off, so that the transformer 10 is demagnetized.

Therefore, in the second embodiment as well as in the first embodiment, it is possible to simultaneously use both the 100V equipment and the 200V equipment from the outlet box 2 which has a simple structure and is inexpensive and easily distributed with 200V. It is possible to obtain the action and effect.

The present invention is not limited to the above-described embodiments, and for example, the output outlet section 4 may be configured as shown in FIGS. 6 and 7, and the 200V insertion port 5 may also present a risk of electric shock. In order to reduce the number of switches, a switch that can be turned on and off with a plug 7 is provided in the same insertion port 5, and the switch is used to open and close between the 200V wiring 3a, 3b and the insertion port 5, for example. It is also possible to arbitrarily change it without departing from the range.

[Advantages of the Invention] The invention is provided with a low-voltage insertion port provided on a side surface of a box and provided with a low-voltage connection electrode to which a low-voltage plug is connectably and separably connected, and is housed in the box. A step-down device which is connected between the high-voltage wiring and the low-voltage connection electrode and steps down the high voltage to a low voltage; and a low-voltage plug of the low-voltage plug which is arranged in the vicinity of the low-voltage plug By configuring with the switch means that controls opening and closing of the step-down device by inserting and removing it from the mouth, it does not cause problems in cost and aesthetics of the room, it is cheap and easy with a simple structure It has an excellent practical effect that both 100V equipment and 200V equipment can be used at the same time.

[Brief description of drawings]

FIG. 1 is a side sectional view of a first embodiment embodying the present invention, FIG. 2 is a front view of the same, FIG. 3 is a schematic explanatory view of the same main parts, and FIG. 4 is an enlarged perspective view of the same part. FIG. 5 is a fragmentary sectional view of the second embodiment, and FIGS. 6 and 7 are front views showing another example of the output outlet portion. Box 2, 100V inlet 9 as a low voltage inlet, transformer 10 as a step-down device, terminal metal fittings 12a, 12b as low voltage connection electrodes, terminal metal fittings 12b, 12 as contacts
c, 100V plug as low voltage plug 13, plug piece 1
4a, 14b, a pressing member 16, a coil spring 18 as a biasing member,
Switching contact 19.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Eiji Komiya, Inouyama City, Aichi, Japan

Claims (3)

[Scope of utility model registration request] 1. A low-voltage insertion port provided on a side surface of a box, the low-voltage plug having a low-voltage connection electrode to which a low-voltage plug is detachably connected, and a high-voltage insertion port housed in the box. A step-down device that is connected between the wiring and the low-voltage connection electrode and steps down a high voltage to a low voltage, and is disposed near the low-voltage insertion port, and is inserted into and removed from the low-voltage insertion port of the low-voltage plug. And a switch means for controlling opening / closing of the step-down device according to the present invention. 2. The switch means comprises a contact connected to a step-down device and a contact connected to a high-voltage wiring,
The voltage conversion outlet according to claim 1, wherein the two contacts are spaced apart from each other on a line where the plug piece of the low-voltage plug is inserted, and are disposed at positions where the inserted plug piece can contact. 3. The switch means includes a pressing member supported by a biasing member so that one end thereof is always projected from the side surface of the box on the insertion side and is supported so as to be reciprocable in the insertion direction of the low voltage plug. 2. The voltage conversion outlet according to claim 1, which comprises an opening / closing contact that is driven to open / close by a member.