KR940002142Y1 - Power adapter - Google Patents

Abstract

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Description

Power adapter

1 to 5 show an example of the implementation of the power adapter of the present invention, Figure 1 is a perspective view of a state in which the conversion plug is separated.

2 is a perspective view of a state in which a conversion plug is mounted.

3 is a front view of the main body.

4 is a sectional view of a state in which a conversion plug is mounted.

5 is a cross-sectional view for explaining the action.

6 to 7 show an example of a conventional power adapter, and FIG. 6 is a perspective view of a state where the conversion plug is removed.

7 is a side view showing a state in which a conversion plug is mounted and used.

8 is a side view showing a problem.

* Explanation of symbols for main parts of the drawings

1: power adapter 3: conversion plug

4: main body 7:-type of floc

8: Home 9: Supply Flux

12: different type of flocks 13: insertion slot

17 body

The present invention is directed to a new adapter. Specifically, it is a power adapter that not only obtains the DC current from the -type commercial AC power supply, but also allows the DC current to be obtained from other types of commercial AC power supply by using the conversion plug. It is to provide a new power adapter that improves safety by being able to prevent electric shocks by touching the back of the -type plug without being careful when trying to get out of it.

The power adapter of the present invention forms a groove enclosing the protruding portion of the main body-type plug, and at the same time forms a body portion protruding backward from the peripheral edge of the rear end surface where the insertion hole into which the sub-type plug of the conversion plug is inserted is formed. The body portion is fitted into the groove formed in the main body, so that during use, the plug of the -type plug is not disconnected from the other type of plug, even when the plug of the -type plug is to be pulled out of the insertion hole of the conversion plug. Since the body portion covers the periphery of the -type floc, a human finger or the like does not touch the -type floc.

Next, the prior art will be described with reference to FIGS. 6 to 8.

Portable or portable electric equipment requiring a DC current is designed to use batteries as a normal power source.

However, since batteries are expensive compared to commercial power sources, it is very convenient to use a commercial AC power source at a place where a commercial AC power outlet is located.

Here, a power adapter for converting an AC current of a commercial AC power supply into a DC current and supplying it to an electric device is considered, and is used in the public.

However, different types of outlets and plugs for commercial AC power sources are used in different countries and regions. For example, flat braided plugs and outlets adapted to them are used in Japan, while round bar shaped plugs and so-called outlets are used in Europe.

Therefore, power adapters that can be used in Japan cannot be used in other countries, and power adapters that can be used in Europe cannot generally be used in countries other than Japan and Europe.

Therefore, when the electric equipment used in Japan needs to be used overseas for travel or exclusion work, there is an uneconomic situation that requires the purchase of an adapter separately.

Therefore, it has been conventionally considered to use a conversion flag.

6 to 8 show an example a of a conventional power adapter with a conversion plug.

b is the main body, and there is a power change part for converting an AC current of a commercial AC power supply into a DC current for use in the corresponding electric equipment, including a step-down transnan rectification circuit and a smoothing circuit, not shown.

c and c are flat braided flocks which protrude from the front surface of the main body b, and are of the type used in Japan. These flocks c and c are connected to the input terminal of the power converter. d is a supply plug which is inserted into an external power supply jack of an electric device, not shown, and is connected to an output end of the power conversion section of the main body b through a code e.

f is the conversion block, for example for use in Europe.

g is a case of the conversion block f, and the flow path blocks h and h protrude from the front end. At the rear end of the case g, insertion holes i and i for inserting the flocks c and c are formed. When the plugs c and c are inserted into the insertion ports i and i, the plugs c and c are connected to the flow path plugs h and h.

Therefore, if the braided plugs c and c are inserted into the insertion ports i and i of the conversion plug f, and the euro plugs h and h are inserted into the outlets adapted to it, this power is applied in the countries and regions that use the euro plugs h and h. Adapter a can be used.

However, in the conventional power adapter a, there is a problem that there is a risk of electric shock.

In other words, if the children are trying to pull out the plugs c and c from the converting f while playing with the converting f, for example, they will have no problem if the plugs c and c are completely removed from the converting f. While the connections h and h of the conversion plug f are not yet released, as shown in FIG. 8, the bottom portions c 'and c' of the plugs c and c may be exposed. Then, because the fingers of children are thin, they may touch the bottom c 'and c' where the c and c are exposed from the gap between the front of the body b and the back of the case g of the conversion plug f. There is a problem that an electric shock occurs because current is still flowing.

In order to solve the above problems, the power adapter of the present invention has a groove in which the body part is fitted so as to surround the protruding portion of the power adapter main body, and the conversion plug protrudes from the rear end to the rear. It is formed.

Therefore, according to the power adapter of the present invention, since the body portion covers the periphery of the -type plug when the plug of the conversion type is removed from the insertion port of the conversion plug while the conversion adapter is mounted, the protrusion formed in the body portion and the groove formed in the main body. By setting the depth of the plug of the -type to the part of the -type while the connection of the -type and the other type of plugs is completely released, It is possible to completely prevent the electric shock caused by the contact with.

Next, the power adapter of the present invention will be described in detail according to the embodiment of the present invention.

a. Overview (Figures 1 and 2)

(1) in the figure is a power adapter according to the present invention, and is composed of a main adapter (2) and a conversion plug (3).

b. Primary adapter (FIGS. 1-4)

(4) is the main body of the main adapter (2), consisting of a step-down transformer, rectifier circuit, smoothing circuit, etc., not shown in the case (5), and the AC current of the commercial AC power supply to the electric equipment to A power converter for converting is housed.

The main body case 5 has a box shape of a substantially vertical long quadrangular shape, and is formed such that the shallow concave portions 6 and 6 extending vertically in a position biased to the front end of both sides are able to hook a finger.

(7) and (7) are-type flocks, and in this embodiment, flat braided flocks which are employed in Japan for connection to a commercial AC power outlet are used.

The flocks 7 and 7 protrude forward from an upwardly biased position of the front face of the case 5, and the base is kept embedded in the case 5 and is not shown. It is connected to the input end of the power converter. (7a) and (7a) are small holes formed in the front ends of the flocks (7) and (7).

(8) is a coupling groove, and is formed so as to form a quadrangular shape from the front side so as to surround the protruding portion of the flocks (7) and (7) in the front of the case (5). The depth of the coupling groove 8 is a depth necessary to prevent the electric shock, but in this embodiment, about 3 times the length of the portion protruding from the case 5 of the flocks 7 and 7. It has a depth of two-thirds.

Reference numeral 9 denotes a supply plug, which has a structure suitable for an external power supply jack of an electric device, not shown, which uses the power adapter 1, and also outputs the power conversion portion of the main body 4 through a cord 10. Connected to the end.

c. Conversion Block (Figures 1, 2, 4)

Denoted at 11 is a case of the conversion plug 3.

Different types of flocks 12 and 12 protrude from the front end of the case 11. In the present embodiment, another type of plug is used for connecting to an outlet of a commercial AC power supply in Europe and the like, i.e., a round rod shaped plug.

(13) and (13) are insertion openings opened in the rear end surface of the case 11, and the connection surfaces 14 and 14 are arranged in these insertion openings 13 and 13, and these connection pieces (14) and (14) are in contact with the proximal end of the other types of flocks 12 and 12 at their front ends.

The connecting pieces 14 and 14 are formed of a conductive metal plate having spring elasticity, and are curved as a whole, and thus the connecting pieces 14 and 14 at substantially center portions in the longitudinal direction of the connecting pieces 14 and 14. ) And the gaps between the inner wall surfaces 15 and 15 of the insertion ports 13 and 13 are narrowed. Moreover, the projections 16 and 16 which protrude toward the said inner wall surfaces 15 and 15 are formed in the center part of the connection piece 14,14.

17 is a body part, and is integrally protruded toward the back from the peripheral edge of the back end surface of the case 11. As shown in FIG. The protruding length from the rear end of the case 11 of the body portion 17 is equal to or slightly shorter than the depth of the engaging groove 8 formed in the main body case 5 of the main adapter 2.

d. Use of conversion flags (2nd, 4th, 5th)

When the conversion plug 3 is used, the plugs 7 and 7 of the main adapter 2 are inserted into the insertion holes 13 and 13 of the conversion plug 3 to the bottom. When the plugs 7 and 7 are completely inserted into the insertion holes 13 and 13, the front ends thereof are connected to the inner wall surfaces 15 and 15 of the-of the insertion holes 13 and 13. 14, the center part of (14) is narrowed, and the center part of the connection piece 14, 14 is pushed slightly to the opposite side to the inner wall surfaces 15 and 15. As a result, the elasticity force is stored in the connecting surfaces 14 and 14, so that the projections 16 are elastically bonded to the plugs 7 and 7 and are formed at the center of the connecting pieces 14 and 14, respectively. ) And 16 are engaged with the small holes 7a and 7a formed at the front ends of the flocks 7 and 7.

In this way, the flocks 7 and 7 are connected to the other types of the flocks 12 and 12 via the connecting pieces 14 and 14.

When the plugs 7 and 7 of the -type installed in the adapter 2 are completely inserted into the insertion holes 14 and 14 of the conversion plug 3 as described above, the body portion installed in the conversion plug 3 is provided. (17) is fitted into the engaging groove (8) formed in the main body (4) of the main adapter (2).

As described above, the conversion plug 3 is mounted to the main adapter 2.

Then, the plugs 12 and 12 of the conversion plug 3 are inserted into the outlet 20 formed in the recessed portion 19 such as the wall 18 and used.

e. Prevention of electric shock (figure 5)

Therefore, while the power adapter 1 is being used while the conversion plug 3 is attached to the main adapter 2, the plugs 7 and 7 of the main adapter 2 are connected to the conversion plug 3. If the plugs (7) and (7) of the -type plugs (7) and (7) are still connected to the other types of plugs (12) and (12) while being removed from the insertion holes (13) and (13), FIG. As shown in Fig. 5, the bottoms of the -type flocks 7 and 7 are covered by the body 17 of the conversion plug 3 so that they are not exposed. It does not touch the -type plugs 7 and 7 in the state of being connected to.

Then, when the plugs 7 and 7 of the -types provided in the adapter 2 are exposed and a human finger may come into contact with them, as shown in FIG. 5B, the plugs of the -type 7 ) And (7) are already disconnected from the other types of plugs 12 and 12, and there is no risk of electric shock even if a person's finger touches the plugs 7 and 7.

In addition, the power adapter 1 according to the present invention is equipped with a conversion plug 3, the weight of the main body 4 during use, the coupling groove 8 of the body portion 17 and the main body 4 of the conversion plug 3 and Since it is supported by the engaging portion of, the durability is increased without the load being concentrated on the plug of the adapter as in the conventional a.

As apparent from the foregoing, the power adapter of the present invention has a plug of -type inserted into an outlet of a commercial AC power supply of the type and a supply plug connected to an external power supply jack of an electric device, and an outlet of a commercial AC power supply of another type. It is a power adapter which has a different type of plug inserted into the plug and a conversion plug to which the -type plug is coupled, and converts an AC current of a commercial AC power source into a DC current and supplies it to an electric device through a supply plug. Forming a groove in the body surrounding the protruding portion of the -type plug, forming a body portion protruding rearward from the peripheral edge of the rear end surface on which an insertion hole into which the -type plug of the conversion plug is inserted is formed; When the plug is inserted into the insertion hole formed by the conversion plug, the body part formed in the conversion plug is fitted into the groove formed in the main body. Characterized in that a lock.

Therefore, according to the power adapter of the present invention, since the body portion covers the periphery of the -type plug even when the plug of the conversion type is removed from the insertion port of the conversion plug while the conversion adapter is mounted, the protrusion formed in the body portion and the groove formed in the main body. By setting the depth of the -type plug to a part of the -type plug as the connection between the other type of plug and the other type of plug is completely released, while the type-type plug is still connected to a commercial AC power supply, By touching them, you can completely prevent electric shock.

Incidentally, the format of each of the flocks shown in the description of the above embodiment is an example, and the -type and other types of flocks are not limited to those described above, of course.

Claims (1)

A plug of a type inserted into an outlet of a commercial AC power supply of a type, a supply plug connected to an external power supply jack of an electrical device, and a plug of another type inserted into an outlet of another type of AC power; It is a power adapter that has a conversion plug to which a type of plug is coupled, and converts an AC current of a commercial AC power source into a DC current and supplies it to an electric device through a supply plug force. When the groove is formed, the body portion protrudes backward from the peripheral edge of the rear end surface on which the insertion hole into which the -type plug of the conversion plug is inserted is formed, and the -type plug is inserted into the insertion hole formed in the conversion plug and joined. And the body portion formed in the conversion plug is fitted into the groove formed in the main body.