JPH074783Y2 - Voltage conversion adapter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a voltage conversion adapter, and more particularly to a voltage conversion adapter that steps down and supplies 100V voltage from a 200V dedicated outlet.

[Prior Art] Conventionally, most of the electric devices used in each home are devices for 100V, but recently, devices for 200V are gradually used. And in this case, in order to use the equipment for 100V and equipment for 200V, the outlet for 100V and 200V in each room
There was an outlet for each, and equipment with the rated voltage was used from each dedicated outlet.

[Problems to be solved by the invention] However, in the above-mentioned conventional technology, it is necessary to perform two types of wiring work, 100V wiring and 200V wiring, from the switchboard to the outlet. There was a problem that the 100V equipment currently used could not be used when the system was switched to a 200V power distribution system.

The present invention has been made to solve the above problems, and its purpose is to easily and inexpensively connect a 100V device and a 200V device from a 200V dedicated outlet without changing the indoor wiring. It is to provide a voltage conversion adapter that enables the use of both.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a high-voltage energizing plug protruding from a side surface of a main body and a low-voltage plug provided on the side surface of the main body. A low-voltage insertion port including a low-voltage connection electrode that is operably connected, and a low-voltage connection electrode that is housed in the main body and connected between the high-voltage power plug and the low-voltage connection electrode. A step-down device for stepping down to a voltage, and switch means arranged near the low-voltage insertion port and controlling opening / closing of the step-down device by inserting / removing the low-voltage plug into / from the low-voltage insertion port. Is.

In addition, the switch means, a contact connected to the step-down device,
A contact connected to the high voltage energizing plug, both contacts being spaced apart from each other on the line where the plug piece of the low voltage plug is inserted, and the inserted plug piece being disposed at a position where the plug piece can contact. It is preferable that

In addition, the switch means, a pressing member that is always supported by the biasing member at one end from the side surface of the main body on the insertion port side and is supported so as to be reciprocally movable in the insertion direction of the low-voltage plug,
It may be composed of an opening / closing contact which is opened / closed by the pressing member.

[Operation] Insert the high-voltage power plug into the high-voltage (for example, 200V) outlet, and then insert the low-voltage plug into the low-voltage insertion port of the main unit. Then, the step-down device is excited by operating the switch means, and the low voltage stepped down by the step-down device is supplied from the insertion port.

Then, when the inserted low voltage 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.

In FIG. 1, reference numeral 1 denotes a 200V dedicated outlet buried in the wall 2 and the outlet 1 has a switchboard (not shown).
A 200V voltage is being distributed via the indoor wiring 3 from. On the surface of the outlet 1, two C-shaped insertion openings 4 and 5 are provided at the upper and lower portions.

Reference numeral 6 denotes a box-shaped main body made of synthetic resin, and an upper insertion port 4 of the outlet 1 is provided on an upper rear surface of the main body 6.
Corresponding to the high voltage energizing plugs 7a, 7b are provided in a protruding manner. Similarly, holding plugs 8a, 8b corresponding to the lower insertion port 5 are provided on the lower portion of the rear surface thereof. Both plugs 7a, 7b, 8a, 8b have a C-shaped cross section so that they can be inserted into the insertion ports 4 and 5 (see FIG. 2).

9 is a V-shaped 200V provided on the entire upper surface of the main body 6
For connecting the connecting electrodes 9a, 9b to the lead wire 10
It is connected to the energization plugs 7a and 7b via a and 10b.
And a 200V plug (not shown) in the insertion port 9
200V voltage is supplied by inserting.

Reference numeral 11 denotes a 100V insertion port formed below the insertion port 9 and having two parallel elongated holes. Inside the insertion port 11, a transformer 12 as a step-down device is arranged.

The transformer 12 has one end connected to the lead wire 10a, a terminal metal fitting 14a serving as a low-voltage connection electrode connected to the point 13, and the other end also serving as a low-voltage connection electrode. The terminal fitting 14b is connected.
The terminal fittings 14a, 14b are arranged so that they can be inserted into the plug pieces 16a, 16b of the 100V plug 15 inserted into the insertion port 11.

Further, as shown in FIGS. 5 and 6, a terminal fitting 14c connected to the lead wire 10b is provided behind the terminal fitting 14b, and the plug fitting 16b of the plug 15 is inserted into the terminal fitting 14c. It is located on the line and at a position where the plug piece 16b comes into contact when the plug 15 is inserted.

The two terminal fittings 14b and 14c serve as contacts and constitute switch means.

The holding plugs 8a and 8b are connected to the main body 6 by an outlet 1.
Have a function as a support piece when attached, and are electrically insulated from each other.

Now, the operation of the voltage conversion adapter configured as described above will be described.

In the state shown in FIG. 1, when the energizing plugs 7a and 7b are inserted into the upper insertion port 4 and the holding plugs 8a and 8b are inserted into the lower insertion port 5, the main body 6 is attached to the outlet 1. Then, a 200V voltage is constantly supplied to the 200V insertion port 9 of the main body 6 through the energizing plugs 7a, 7b and the lead wires 10a, 10b.

Therefore, if the 200V plug is inserted into the insertion port 9, the 200V voltage is supplied by this, and the 200V device can be used. The main body 6 is held by the holding plug 8.
The weight of is retained.

Next, when the 100V plug 15 is inserted into the 100V insertion port 11, one plug piece 16a of the plug 15 is brought into contact with the terminal fitting 14a. At the same time, the other plug piece 16b
Is brought into contact with the terminal fitting 14b and the terminal fitting 14c, which are contacts, and the terminal fittings 14b and 14c are closed.

Then, the transformer 12 is excited by this, and the transformer 12 steps down the 200V voltage supplied through the lead wires 10a and 10b to 100V voltage. Therefore, the 100V voltage is supplied from the terminal fittings 14a and 14b through the plug pieces 16a and 16b, and the 100V device can be used.

Then, when the 100V plug 15 inserted after the end of use of the device is removed from the insertion port 11, the terminal fitting 14
The closed state between b and 14c is released, and the transformer 12 is demagnetized.

As described above, in this embodiment, unlike the prior art, it is not necessary to provide two types of wiring from the switchboard to the outlet, so that no cost problem occurs.

200V voltage can be constantly supplied from the 200V inlet 9 of the main body 6, while 100V is supplied to the 100V inlet 11
When the plug 15 is inserted, the switch means is turned on and the transformer 12 is excited, and the transformer 12 turns the 200V voltage to 100V.
Since the voltage is reduced to the voltage, the 100V insertion port 11 can supply the 100V voltage.

Further, since the transformer 12 has a lossless structure in which the voltage is applied and excited only when the 100V plug 15 is inserted into the 100V insertion port 11, the operating cost can be reduced.

Therefore, simply by installing the main body 6 in the outlet 1, it is possible to easily and inexpensively connect the 200V dedicated outlet 1 to the device for 100V.
It is possible to use both 0V devices at the same time.

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

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

As shown in FIG. 6, at a position corresponding to the 100V insertion port 11 of the main body 6, a pressing member 18 having a locking portion 17 formed in an intermediate portion is provided.
However, one end 18a thereof is allowed to freely penetrate through the support hole 19 and is supported so as to be capable of reciprocating in the insertion direction of the plug 15.

Then, the pressing member 18 is always urged from the support hole 19 in the direction in which it is projected from the support hole 19 by the coil spring 10 as a biasing member, and the locking portion 17 locks on the inner peripheral edge of the support hole 19. The protruding state from the end face of the insertion port 11 is maintained.

On the other hand, in the insertion port 11, a normally open contact 21 is provided on the moving line of the pressing member 18 at a position where it can contact the other end 18b of the pressing member 18, and the contact 21 has one end through the transformer 12. Connected to lead wire 10a and the other end is lead wire 10b
It is connected to the. The pressing member 18 and the contact 21 constitute a switch means, and the switch means is operated by the normally open contact 21 being pressed by the other end 18b of the pressing member 18 to apply a voltage to the transformer 12. It is like this.

Now, when the 100V plug 15 is inserted into the 100V insertion port 11 in the state shown in FIG. 6, the front end face of the plug 15 is pressed by the pressing member.
When the one end 18a of 18 is contacted and the plug 15 is further inserted, the pressing member 18 is moved in the direction of the contact 21 against the biasing force of the coil spring 20.

Then, when the plug 15 is completely inserted into the insertion port 11, the other end 18b of the pressing member 18 presses the contact 21, and the contact 21 is operated.

Further, when the inserted plug 15 is pulled out from the insertion port 11, the pressing member 18 has one end 18a by the urging force of the coil spring 20.
Is moved in a direction of projecting from the end face of the insertion port 11.
At the same time, the other end 18b of the pressing member 18 is separated from the contact 21, and the contact 21 is turned off, so that the transformer 12 is demagnetized.

Therefore, also in the second embodiment, similar to the first embodiment, it is possible to easily and inexpensively and easily use both the 100V device and the 200V device simultaneously from the 200V dedicated outlet 1 with a simple structure. Can play.

The present invention is not limited to the above-described embodiments, and for example, the front surface of the main body 6 may be provided with insertion ports 9 and 11 as shown in FIGS. In order to reduce the risk of electric shock,
A switch that can be turned on and off by a plug is provided, and the switch is used to open and close between the high-voltage energizing plugs 7a, 7b and the insertion port 9. Any change can be made without departing from the spirit of the invention. Is also possible.

[Effects of the Invention] This invention includes a high-voltage energizing plug that projects from the side surface of the main body, and a low-voltage connecting electrode that is provided on the side surface of the main body and that connects the low-voltage plug so that it can be connected and disconnected. A low-voltage insertion port, and while being housed in the main body, connected between the high-voltage power plug and the low-voltage connection electrode,
It is composed of a step-down device for stepping down a high voltage to a low voltage, and switch means which is arranged in the vicinity of the low-voltage insertion port and controls opening / closing of the step-down device by inserting / removing the low-voltage plug into / from the low-voltage insertion port. As a result, by simply attaching the main body to the outlet, it is possible to inexpensively and easily use both the 100V device and the 200V device simultaneously from the 200V dedicated outlet, which is an excellent practical effect.

[Brief description of drawings]

1 to 5 show a first embodiment in which the present invention is embodied, and FIG. 1 is a partially broken cross-sectional view showing its use state, and FIG.
FIG. 4 is a perspective view, FIG. 3 is a front view of the same, FIG. 4 is a schematic explanatory view of the same part, FIG. 5 is an enlarged perspective view of the same part, and FIG. 7 and 8 are front views showing another example of the receiving port. Main body 6, high voltage energizing plugs 7a, 7b, 100V insertion port 11 as low voltage insertion port, transformer as step-down device
12, terminal metal fittings 14a, 14b as low voltage connection electrodes, terminal metal fittings 14b, 14c as contacts, 100 as low voltage plug
A V plug 15, plug pieces 16a and 16b, a pressing member 18, a coil spring 20 as an urging member, and an opening / closing contact 21.

Front Page Continuation (72) Inventor Yoshitoyo Iwamoto 1 Inouyama City, Aichi Prefecture

Claims (3)

[Scope of utility model registration request] 1. A low-voltage plug-in having a high-voltage energizing plug protruding from a side surface of the main body, and a low-voltage connecting electrode provided on the side surface of the main body, to which the low-voltage plug is detachably connected. A port, a step-down device that is housed in the main body, is connected between the high-voltage power plug and the low-voltage connection electrode, and steps down the high voltage to a low voltage; and near the low-voltage insertion port. A voltage conversion adapter, which is arranged and comprises 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. 2. The switch means comprises a contact connected to a step-down device and a contact connected to a high-voltage energizing plug, both contacts being located on the line into which the plug piece of the low-voltage plug is inserted. The voltage conversion adapter according to claim 1, wherein the plug pieces that are separated from each other and are inserted are arranged at positions where they can come into contact with each other. 3. A pressing member, wherein the switch means has one end always projected by a biasing member from the side surface of the main body on the insertion port side and is supported so as to reciprocate in the inserting direction of the low voltage plug, and the pressing member. The voltage conversion adapter according to claim 1, which comprises an opening / closing contact that is driven to open / close by.