JP4206119B1 - Plug conversion adapter and plug conversion adapter device - Google Patents

Abstract

Provided are a plug conversion adapter and a plug conversion adapter device which are excellent in portability without exposing a ground terminal to the outside when a three-pole type power plug is connected.
An adapter main body 2 having a pair of adapter pins 22 and a pair of sockets 23, and a plug ground cover having an insertion hole 32 into which a ground terminal of a power plug of a three-pole type electric device is inserted. The guide grooves 24 and 24 and the guide rail 33 are detachably attached.
[Selection] Figure 3

Description

  The present invention particularly relates to a plug conversion adapter and a plug conversion adapter device corresponding to power plugs having different shapes or different numbers of pins.

  There are various standards for power plugs such as electric appliances and power outlets for connecting them, depending on the country or region. For example, FIG. 9 of Patent Document 1 shows seven types of A, B, B3, BF, C, O, SE shapes of power outlets of various standards. For example, the A type is an American type power outlet mainly used in Japan, the United States and Canada. The B, B3, and BF types are British type power outlets mainly used in the UK, Hong Kong, Malaysia, Singapore, South Africa and the like. The C and SE types are power outlets mainly used in France, Germany, Belgium and the like. In addition, there are BF three-point type and O2 type power outlets shown in FIG.

  As described above, the standard of the power outlet is a two-hole type having only a power terminal plug, and a three-hole type having a ground terminal plug in addition to the power terminal plug. And three types of shutter opening type with a shutter opening / closing pin hole (B3 type, BF type, BF three point type, O2 type, etc.).

  The shape of the power outlet and power plug and the number and dimensions of the plug terminals differ depending on the standard, so the shape of the power plug of the electrical equipment used (for example, dryer, shaver, personal computer, etc.) matches the shape of the power outlet. If not, it is necessary to interpose a plug conversion adapter.

  As such a plug conversion adapter, there is an adapter plug described in Patent Document 2. For example, when the power outlet is a two-hole A type and the power plug of the electrical device is a three-pole type B3 type with a ground terminal, if the power plug is connected via this adapter plug, The device can be used.

  In this case, however, the ground terminal is exposed outside the adapter plug as shown in FIG. In the case of electrical equipment used around water such as a washing machine, it is necessary to ground with the ground terminal, but if there is no electrical equipment used other than around the water, there is no problem, so the ground terminal is an adapter. Even if it is exposed outside the plug, there is no problem in using the electric device. FIG. 13 shows this state, and FIG. 13 is a partial cross-sectional view when the power plug 7 of the electric device is connected to the adapter plug AP. As apparent from FIG. 13, the power terminals 72 and 72 are fitted and connected to one end of the adapter pin A1 of the adapter plug AP, but the ground terminal 71 is exposed to the outside of the adapter plug AP. It has become.

Japanese Patent Laid-Open No. 2004-178961

JP 2001-273958 A

  However, as shown in FIG. 13, when the ground terminal 71 is exposed, an object may be caught on the ground terminal 71 or the ground terminal 71 may be touched by hand, so that the ground terminal 71 is exposed to the outside. It is not preferable to leave this state. Here, in order to prevent the ground terminal 71 from being exposed to the outside, a structure in which a hole for inserting the ground terminal 71 is provided in advance in the adapter plug AP is also conceivable. However, when such a structure is adopted, the size of the adapter plug AP itself becomes large and portability is deteriorated. In addition, the power plug 7 to be connected to the adapter plug AP is not only such a three-pole type, but also a two-pole type without a ground terminal. For the purpose of connecting this two-pole type power plug. In the case of using only, the hole for inserting the ground terminal is unnecessary.

  The present invention has been created to solve the above-described problems, and the object of the present invention is to prevent the ground terminal from being exposed to the outside even when a three-pole type power plug is connected. An object of the present invention is to provide a plug conversion adapter and a plug conversion adapter device that are excellent in performance.

In order to solve the above-described problem, the present invention provides a connection between the power outlet and the power plug when the power outlet and the power plug do not correspond to each other when the power plug of the electrical device is connected to the power outlet. A plug conversion adapter that is electrically connected to each other by being interposed between the adapter main body and a plug ground cover that is detachably attached to the adapter main body, and the adapter main body corresponds to the power outlet. A pair of adapter pins, a pair of sockets electrically connected to the pair of adapter pins and corresponding to the power plug , and provided between the pair of sockets and attached to the side where the plug ground cover is attached It comprises a first groove having an opening, of the plug ground cover Installing the adapter body A second groove having a second opening on the side, and when the plug ground cover is attached to the adapter body, the first groove and the second groove are abutted to form an elongated hole. there is formed, elongated-shaped hole, if the power plug is three terminal plug having a ground terminal or a shutter opening and closing pin, characterized in that it is insertable the ground terminal or the shutter opening and closing pin .

  The adapter body has a guide rail or a guide groove, and the plug ground cover has a guide groove corresponding to the guide rail provided in the adapter body or a guide corresponding to the guide groove provided in the adapter body. By providing a rail, the plug ground cover may be slidably attached to the adapter body.

  When the supply voltage of the power outlet is detected when one end of the adapter pin is inserted into the power outlet when the pair of sockets are disposed on the surface provided with the pair of sockets, Detection display means for displaying this may be provided so that the detection display means can be confirmed from the outside without the power plug being inserted.

  The extension body includes an extension portion for attaching the pair of plugs, and the extension portion has an outer shape on the side where the pair of plugs are attached, and the power outlet is a C-type power outlet or SE. In the case of a power outlet having a recess such as a type of power outlet, the outer shape may be inserted into the recess.

The second groove may be provided with an insertion hole penetrating in the length direction.

  On the front side of the plug ground cover, a first master key pin inserted into a shutter opening / closing pin hole provided in a BF type or BF three-point type power outlet and an extension to the tip of the first master key pin are provided. The second master key pin that opens the shutter that is inserted into the shutter opening / closing pin hole provided in the O2-type power outlet and closes the power extraction pin hole is configured to protrude by integral molding. Also good.

  Also, a fourth master key pin is provided on the front side of the plug ground cover so as to open the shutter that is inserted into the shutter opening / closing pin hole provided in the B3 type power outlet and closes the power extraction pin hole. You may comprise.

  Here, the “front side of the plug ground cover” is expressed to show the arrangement of the master key pins when the surface on which the insertion hole is provided is the back side.

  In addition, the present invention provides the plug conversion adapter described above and an auxiliary plug used when the plug conversion adapter is attached to a B3 type, BF type, BF three-point type, or O2 type power outlet. The auxiliary plug is provided on a BF type or BF three-point type power outlet that protrudes on the surface of the substrate and is formed of an insulator. A first master key pin to be inserted into the shutter opening / closing pin hole and an extension pin provided at the tip of the first master key pin and inserted into the shutter opening / closing pin hole provided in the O2 type power outlet. A second master key pin that opens a shutter that closes the hole; and a first master key pin that protrudes from the surface of the substrate. When it is inserted into the shutter opening / closing pin hole of the F3-point type power outlet, it is simultaneously inserted into a pair of shutter opening / closing pin grooves provided on the shutter of the BF 3-point type power outlet, and cooperates with the first master key pin. Then, a pair of third master key pins that open the shutter closing the power extraction pin hole, and a power protruding through the shutter opening / closing pin hole provided on the back surface of the board and provided in the B3 type power outlet A fourth master key pin that opens a shutter that closes the take-out pin hole, a recess formed on the back surface of the substrate and having the same shape as the cross-sectional shape of the extending portion, and formed inside the recess, And a pin insertion hole that penetrates from the back surface to the front surface and into which the power plug is inserted.

  In the present invention, a configuration including an adapter main body and a plug ground cover that is detachably attached to the adapter main body and has an insertion hole into which a ground terminal is inserted is employed. For this reason, when connecting a three-pole type power plug, the ground terminal is not exposed if a plug ground cover is attached. On the other hand, when connecting a two-pole type power plug, the plug ground cover should be removed. Therefore, it is convenient for the user and is excellent in portability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, first, an embodiment of the plug conversion adapter according to the present invention will be described with reference to FIGS. 1 to 4 as a first embodiment of a form having no extension part, and a form having an extension part will be described. With reference to FIG. 5 as a second embodiment, a form in which a master key pin is integrally formed with a plug ground cover will be described as a third embodiment with reference to FIGS. In each embodiment, the shape of the adapter pin corresponds to the type of power outlet to be inserted.

  1A and 1B are diagrams showing a configuration of an adapter main body of a plug conversion adapter according to a first embodiment of the present invention, where FIG. 1A is a front view, FIG. 1B is a rear view, FIG. 1C is a perspective view, and FIG. ) Is a side view, and (e) is a partial cross-sectional view. 2A and 2B are diagrams showing a configuration of a plug ground cover of the plug conversion adapter according to the first embodiment of the present invention, wherein FIG. 2A is a front view, FIG. 2B is a rear view, and FIG. d) is a top view. 3A and 3B are diagrams showing the configuration of the plug conversion adapter according to the first embodiment of the present invention, wherein FIG. 3A is a front view and FIG. 3B is a rear view.

  As shown in FIG. 3, the plug conversion adapter 1 of the present invention includes an adapter main body 2 and a plug ground cover 3 that is detachably attached to the adapter main body 2.

  As shown in FIG. 1, the adapter main body 2 includes a casing 21 and a pair of adapter pins 22 and 22 protruding from the front surface 21 a of the casing 21. In the upper part of the casing 21, guide grooves 24 and 24 for sliding and mounting a plug earth cover 3 described later, and a recess 26 for holding the plug earth cover 3 in a predetermined position are provided.

  The shape of the adapter pin 22 is adapted to the shape of the insertion port of the power outlet to be inserted. For example, as shown in Patent Document 1 above, there are mainly eight types of power outlets, such as A type, B type, and C type. Any of these eight types may be used.

One end 22a side of the adapter pin 22 is formed as an outlet insertion pin portion so that it can be inserted into an outlet of a power outlet, and the other end 22b side of the adapter pin 22 is a plug that can be fitted with a power plug of an electric device. A fitting portion 22c is provided. Various fitting structures of the plug fitting portion 22c are conceivable. In the present embodiment, a structure in which the power plug is sandwiched between two elastically deformable claws 2 2 c-1 and 2 c-2 is adopted. ing.

  The adapter pin 22 is fixedly attached to a casing 21 made of an insulating casing. The attachment and fixing mode is such that the entire plug fitting portion 22c on the adapter pin other end 22b side is accommodated in the casing 21, and The whole outlet insertion pin portion (one end side of the adapter pin) 22a protrudes from the front surface 21a of the casing 21 to the outside.

A pair of sockets 23, 23 (hereinafter simply referred to as “sockets 23”) are provided on the back surface 21 b of the casing 21 at positions facing the plug fitting portions 22 c of the adapter pin other end 22 b. The tip of the power plug is inserted into the plug fitting portion 22c side on the adapter pin other end 22b side. Between the pair of sockets 23, 23, a first groove D1 having a first opening OP1 is provided on the side where the plug ground cover 3 is attached.

  On the surface where the socket 23 is provided, that is, in the center of the back surface 21b of the casing 21, a power confirmation lamp 25 is installed as means for detecting and displaying the power supply state of the power outlet. In order to detect and display the power supply state of the outlet, it is directly connected to the adapter pin 22 and can be turned on by the power supplied from the power outlet to the adapter pin 22 side. The power confirmation lamp 25 is arranged at the same level as the back surface 21b of the casing 21 or at a position slightly retracted from the back surface 21b. The arrangement structure is adopted in the back surface 21b of the casing 21. This is because the plug base end faces of the power plug are in contact with each other so as not to interfere with the contact. In addition, the power confirmation lamp 25 may be disposed at a position where it can be visually recognized from the outside in a state where the power plug of the electrical device is inserted into the socket 23.

  When power is supplied to the power outlet, that is, when one end (outlet insertion pin portion) 22a side of the adapter pin 22 is inserted into the power outlet in the power ON state, power is supplied from the power outlet to the adapter pin 22 side. However, the power supply confirmation lamp 25 is lit by this supplied power. Further, when power is not supplied to the power outlet, that is, when the one end 22a side of the adapter pin 22 is inserted into the power outlet in the power OFF state, there is no power supply from the power outlet to the adapter pin 22 side. The power confirmation lamp 25 is not lit.

  In short, in the plug conversion adapter 1 of the present embodiment, from the lighting state of the power confirmation lamp 25 when one end of the adapter pin 22 is inserted into the power outlet, the power supply state of the power outlet, that is, whether the power outlet is in the power OFF state. Whether or not can be determined at a glance.

As shown in FIG. 2, the plug ground cover 3 includes a casing 31 formed of an insulating casing. The plug ground cover 3 includes a second groove D2 having a second opening OP2 on the side where the adapter body 2 is attached. An insertion hole 32 for inserting a ground terminal of a power plug of the electric device is provided on the back surface 31b side of the casing 31. Insertion holes 32, as well is provided in the length direction of the second groove D2, which is a through hole extending through from the back 31b to the front surface 31a. Since the ground terminal is inserted into the insertion hole 32 as described above, the depth of the insertion hole 32 needs to be such that the tip of the ground terminal is not exposed to the outside. If the insertion hole 32 is a through-hole, the bottom is not necessary, so that the material cost for the bottom, the weight of the product, and the size of the product itself can be reduced.

  Guide rails 33, 33 projecting sideways and convex portions 34, 34 projecting downward are provided at the lower part of the casing 31, that is, on the side attached to the adapter body 2. The body portion 35 of the casing 31 is formed with an uneven surface so that the user can easily grip it during use.

When the adapter main body 2 and the plug ground cover 3 configured as described above are coupled, as shown in FIG. 3 , the first groove D1 and the second groove D2 are abutted to form an elongated hole SH. The More specifically, the guide rails 33 and 33 of the plug ground cover 3 are fitted into the guide grooves 24 and 24 of the adapter body 2. In this fitting method, the guide rails 33 and 33 of the plug ground cover 3 are slid in the guide grooves 24 and 24 in the direction of the adapter pin 22 from the back surface 21b side of the adapter body 2. Then, the convex portions 34 and 34 of the plug earth cover 3 are fitted into the concave portions 26 and 26 of the adapter main body 2. The projections 34 and 34 and the recesses 26 and 26 restrict the forward movement of the plug ground cover 3, and guide grooves 24 and 24, guide rails 33 and 33, projections 34 and 34, and recesses 26 and 26. Thus, the plug ground cover 3 is attached to a predetermined position on the adapter main body 2.

  Due to such a configuration, the plug ground cover 3 can be detachably attached to the adapter body 2. The mounting structure is not limited to such a structure, and various structures may be applied, for example, by a locking hole and a locking claw.

  In addition, when a power plug of a three-pole type electrical device is connected to the plug conversion adapter 1 in a state where the adapter body 2 and the plug ground cover 3 are connected, a ground terminal is inserted into the insertion hole 32 of the plug ground cover 3. It is supposed to be inserted. FIG. 12 is a partial cross-sectional view showing a state in which the power plug 7 of the electric device of the three-pole type 71, 72, 72 is connected to the plug conversion adapter 1 in which the plug ground cover 3 is connected to the adapter body 2. . As is apparent from this figure, the ground terminal 71 of the power plug 7 is inserted into the insertion hole 32 of the plug ground cover 3 and is not exposed to the outside of the plug conversion adapter 1.

  On the other hand, when the plug conversion adapter 1 is used only when a two-pole type power plug is connected, the plug ground cover 3 is unnecessary, so the plug ground cover 3 can be removed and used. There is no need to carry it. Therefore, it is convenient for the user and is excellent in portability.

  FIG. 6 shows a perspective view when the plug conversion adapter 1 is used in correspondence with various types of power outlets. FIG. 6A shows a case where the plug conversion adapter 1 is connected to an A type power outlet 61 and FIG. Shows a case of connecting to a B type power outlet 62, and (c) showing a case of connecting to an O type power outlet 63. When used by connecting to an A type power outlet 61, the adapter pin 22 has a shape that can be inserted into the A type. Similarly, when used by connecting to a B type power outlet 62. The adapter pin 22 has a shape that can be inserted into the B type. When the adapter pin 22 is connected to the O type power outlet 63, the adapter pin 22 is formed in a shape that can be inserted into the O type. Need to be.

  Next, the configuration of the adapter main body of the plug conversion adapter according to the second embodiment of the present invention will be described mainly with reference to FIGS. 4 and 7. 4A and 4B are diagrams showing the configuration of the adapter main body of the plug conversion adapter according to the second embodiment of the present invention. FIG. 4A is a front view, FIG. 4B is a rear view, FIG. 4C is a perspective view, and FIG. ) Is a side view. FIG. 7 is an explanatory diagram when the plug conversion adapter according to the second embodiment of the present invention is used in correspondence with various types (C, SE type) of power outlets. The plug ground cover has the same configuration as the plug ground cover 3 of the first embodiment.

  The plug conversion adapter 1 according to the first embodiment is mainly used for A type, B type, and O type. That is, when the recesses 64A and 65A are provided in a power outlet such as the C type or the SE type, the casing 21 of the adapter body 2 cannot be fitted in the recesses 64A and 65A. Power is not supplied even if is inserted, or stability is poor. Therefore, the plug conversion adapter 1A according to the second embodiment is used for the C-type or SE-type power outlets 64 and 65 having such recesses 64A and 65A.

  In short, a portion different from the plug conversion adapter 1 according to the first embodiment can be inserted into the recesses 64A and 65A so as to be adapted to a power outlet having the recesses 64A and 65A such as C type and SE type. That is, the extended portion 5 which is the outer shape is provided. Therefore, the plug conversion adapter 1A according to the second embodiment is largely different from the plug conversion adapter 1 according to the first embodiment in that the extending portion 5 is provided between the adapter pins 22 and 22 and the casing 21. The configuration is almost the same. Therefore, in the description of the plug conversion adapter 1A according to the second embodiment, portions having the same configuration and function as those of the plug conversion adapter 1 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted. .

  The extending portion 5 extends from the casing 21 and is formed by integral molding, and is attached so that the adapter pin 22 protrudes to the front side. Here, the cross-sectional shape of the extending portion 5 (the cross section is a surface with respect to the power outlet) is formed to be similar to the outer shape of the casing 21 and reduced. In addition, if this shape is formed so as to fit into the recess of the C-type power outlet, it is preferable because it can prevent wobbling when inserted into the power outlet. It should be noted that the outer shape and size can be inserted at least into the recesses 64A and 65A of the power outlet.

  The internal structure of the plug conversion adapter 1A is the same as that of the plug conversion adapter 1 of the first embodiment, but the adapter pins 22 and 22 are formed longer by the length of the extended portion 5. Since other configurations are the same as those of the plug conversion adapter 1 according to the first embodiment, description thereof will be omitted.

  If the plug conversion adapter 1 or the plug conversion adapter 1A configured as described above is used, it becomes possible to support power adapters of A type, B type, C type, SE type, and O type.

  However, if only the plug conversion adapter 1 or the plug conversion adapter 1A is used, a shutter open-type three-hole type (B3 type, BF type, which has a shutter opening / closing pin hole in addition to the power supply terminal insertion port) BF 3-point type, O2 type, etc.) cannot be used. That is, it is necessary to insert a pin into the shutter opening / closing pin hole to open the shutter. Therefore, in addition to the plug conversion adapter 1 or the plug conversion adapter 1A having the above configuration, the plug conversion adapter device of the present invention is provided with the following auxiliary plug, and if such a plug conversion adapter device is used, All types of power outlets can be supported.

  Below, the structure of an auxiliary | assistant plug and the usage example of a plug conversion adapter instrument are demonstrated with reference to FIG.5 and FIG.8. Note that the configuration of the plug conversion adapter 1 or plug conversion adapter 1A to be used has been described above, and a description thereof will be omitted.

  FIG. 5 is a diagram showing the configuration of the auxiliary plug in the plug conversion adapter device according to the embodiment of the present invention, wherein (a) and (b) are perspective views, (c) is a side view, and FIG. 8 is the present invention. It is explanatory drawing in the case of using the plug conversion adapter instrument which concerns on corresponding to the power outlets of various types (BF, B3, O2 type). In the plug conversion adapter shown in FIG. 8, when the plug conversion adapter 1A used for the C type is also used as the BF type in (a), the plug conversion adapter 1A used for the SE type is used as the B3 type in (b). The case where it is used for both is shown.

  As shown in FIG. 5, the auxiliary plug 4 is a plug used when an adapter plug is attached to a BF three-point type or O2 type shutter open / close type power outlet. The auxiliary plug 4 includes one substrate 41 made of an insulator, four types of master key pins 42, 43, 44, 45 provided on the substrate 41, and a pin insertion hole 46 formed through the substrate 41. It has.

  The substrate 41 is formed of a material such as polycarbonate, bakelite, ebonite, plastic, etc., and its shape is smoothly chamfered so that the width at the lower part is slightly wider than the width at the upper part and the side part has no corners throughout. ing. The thickness of the substrate 41 is about 5 mm.

  A first master key pin 42 having a square pin section, a second master key pin 43 having a square pin section, and a pair of third master key pins 44 and 44 having a square pin section are formed on the surface of the substrate 41. A fourth master key pin 45 having a round pin cross section is provided on the back surface of the substrate 41.

  The first master key pin 42 is integrally formed of the same material as the substrate 41 and has a length of about 9 mm. The cross-sectional shape of the pin is set to 8 mm in width and 4 mm in thickness so as to match the hole shape of the shutter opening / closing pin hole provided in the BF 3-point type power outlet.

  The second master key pin 43 is integrally formed of the same material with the tip of the first master key pin 42 extended, and the length thereof is set to about 13 mm. The cross-sectional shape of the pin is a size that matches both the hole shape of the shutter opening / closing pin hole provided in the O2 type power outlet and the hole shape of the ground terminal hole provided in the A type power outlet. The width is not particularly limited, and the thickness is set to 2 mm or less. The tips of the pins are chamfered at the corners so that they can be easily inserted into the shutter opening / closing pin holes.

  Since the width and thickness of the second master key pin 43 are both set smaller than the width and thickness of the first master key pin 42, a step portion is provided at the joint between the second master key pin 43 and the first master key pin 42. Is formed. The step functions as a stopper when the second master key pin 43 is inserted into the shutter opening / closing pin hole of the O2 type power outlet, and prevents the first master key pin 42 from entering the shutter opening / closing pin hole. .

  The third master key pin 44 is integrally formed of the same material as that of the substrate 41, and the length thereof is set to about 9 mm like the first master key pin 42. The cross-sectional shape of the pin is set to 4 mm in width and 3 mm in thickness so as to match the shape of the shutter opening / closing pin groove provided in the BF three-point type power outlet. The distance between the pair of pins 44 is set to be equal to the distance between the pair of shutter opening / closing pin grooves. The width of the third master key pin 44 and the hole diameter of the pin insertion hole 46 are set to the same size.

  A concave portion 47 having the same shape as the cross-sectional shape of the extending portion 5 of the adapter main body 2 is formed on the back surface of the substrate 41. A pair of pin insertion holes 46, 46 through which the BF / C type adapter pins 22, 22 are inserted are formed inside the recess 47 from the front surface to the back surface of the substrate 41.

  The distance between the pair of pin insertion holes 46, 46 is the same as the distance between the BF / C type adapter pins 22, 22, and the diameter of the pin insertion hole 46 is the BF / C type adapter pin. 22 and 22 are formed in a size that matches.

  The first master key pin 42 provided on the auxiliary plug 4, the pair of third master key pins 44, 44, and the pin insertion holes 46, 46 each have a shutter opening / closing provided on a BF three-point type power outlet. And a pair of shutter opening / closing pin grooves and a power extraction pin hole. The shapes of the BF three-point type and C type power outlets as described above are well known, and are shown in, for example, Patent Document 1.

  The fourth master key pin 45 is integrally formed of the same material as the substrate 41 and has a length of about 21 mm. The cross-sectional shape of the pin is set such that its diameter matches the hole shape of the shutter opening / closing pin hole provided in the B3 type power outlet. The tips of the pins are chamfered at the corners so that they can be easily inserted into the shutter opening / closing pin holes.

  The fourth master key pin 45, the first master key pin 42, and the second master key pin 43 are formed on substantially the same line through the substrate 41. The first master key pin 42 provided on the auxiliary plug 4, the pair of third master key pins 44, 44, and the pin insertion holes 46, 46 each have a shutter opening / closing provided on a BF three-point type power outlet. And a pair of shutter opening / closing pin grooves and a power extraction pin hole.

  Next, a usage example of the plug conversion adapter device configured as described above will be described with reference to FIG. FIG. 8 shows an explanatory diagram when the plug conversion adapter device according to the present invention is used corresponding to various types of power outlets (BF, B3, O2 type), and (a) is a BF type. (B) shows a case where it is used for a B3 type power outlet, and (c) shows a case where it is used for an O2 type power outlet.

<When using a BF type power outlet>
When the BF type power outlet 66 is used, as shown in FIG. 8A, the second master key pin 43 is connected to the shutter opening / closing pin hole 66c, and the pair of third master key pins 44, 44 (not shown) is paired. Are inserted in alignment with the shutters 66b and 66b.

  At this time, when the second master key pin 43 enters deep into the shutter opening / closing pin hole 66c and the first master key pin 42 at the base thereof is inserted, the pair of power extraction pin holes 66a and 66a are blocked. The pair of shutters 66b and 66b are opened, the pair of third master key pins 44 and 44 are inserted, and the power outlet 66 can be used.

  Then, the plug conversion adapter 1 </ b> A is attached to the power outlet 66 while the auxiliary plug 4 is still attached to the power outlet 66. This mounting method is performed by inserting the adapter pin 22 into the power outlet pin holes 66 a and 66 a of the power outlet 66 through the pin insertion holes 46 and 46 of the auxiliary plug 4.

  The extension part 5 of the plug conversion adapter 1A is firmly fixed without wobbling with respect to the auxiliary plug 4 by being fitted in the recess 47, and as a result, the contact failure of the adapter pins 22 and 22 with the power extraction pin hole 66a. It is safe to prevent short circuit due to In FIG. 8A, the plug conversion adapter 1A is used in a state where the plug ground cover 3 is disposed on the adapter body 2A. The plug conversion adapter 1A is shown in FIG. 8C. It is also possible to use it upside down.

<When using a B3 type power outlet>
When using the B3 type power outlet 67, as shown in FIG. 8B, the fourth master key pin 45 is inserted into the shutter opening / closing pin hole 67c with the recess 47 facing upward. Since there are no other protrusions on the surface on which the fourth master key pin 45 is formed, the fourth master key pin 45 enters deeply to the root, and the shutter 67b that blocks the pair of power extraction pin holes 67a, 67a, 67b is opened, and the power outlet 67 is ready for use.

  Then, the plug conversion adapter 1 </ b> A is attached to the power outlet 67 while the auxiliary plug 4 is still attached to the power outlet 67. Since this adapter method is performed by directly inserting the adapter pins 22 and 22 into the power outlet pin holes 67a and 67a of the power outlet 67, the adapter pins 22 and 22 are firmly fixed to the power outlet 67 without wobbling. As a result, it is possible to prevent a short circuit or the like due to poor contact of the adapter pins 22 and 22 with the power extraction pin hole 67a. In FIG. 8B, the plug conversion adapter 1A is used in a state where the plug ground cover 3 is disposed on the adapter body 2A. The plug conversion adapter 1A is shown in FIG. 8C. It is also possible to use it upside down.

<For O2 type power outlet>
When the O2 type power outlet 68 is used, as shown in FIG. 8C, the second master key pins 44, 44 are turned up, as opposed to the BF three-point type power outlet 66. The master key pin 43 is inserted into the shutter opening / closing pin hole 68c.

  At this time, the second master key pin 43 is inserted into the shutter opening / closing pin hole 68c, but since the first master key pin 42 at the base does not fit into the shutter opening / closing pin hole 68c, the position of the step R Stop at. On the other hand, the lengths of the third master key pins 44 and 44 are formed to be equal to the length L of the first master key pin 42, so that the tips of the third master key pins 44 and 44 abut against the wall surface of the power outlet 68. In this way, the substrate 41 is supported at the three points of the step R and the pair of third master key pins 44, 44 with respect to the wall surface of the power outlet 68, and the auxiliary plug 4 is in parallel with the power outlet 68. Mounts stably. Further, the pair of shutters 68b and 68b that have closed the pair of power extraction pin holes 68a and 68a are opened, and the power outlet 68 can be used.

  Then, the plug conversion adapter 1 is attached to the power outlet 68 while the auxiliary plug 4 is still attached to the power outlet 68. Since this mounting method is performed by directly inserting the adapter pins 22 and 22 into the power outlet pin holes 68a and 68a of the power outlet 68, the adapter pins 22 and 22 are firmly fixed to the power outlet 68 without wobbling. It is safe because it is possible to prevent short-circuits due to poor contact with the power extraction pin holes 68a and 68a of 22 and 22.

  As described above, if there is the plug conversion adapter 1 or the plug conversion adapter 1A and the auxiliary plug 4, it is possible to adapt to the standards of all power outlets. In addition, when the power plug of the electrical equipment connected to the plug conversion adapter 1 or the plug conversion adapter 1A is a three-pole type, the ground terminal of the power plug is exposed to the outside if the plug ground cover 3 is used. There is nothing to do. On the other hand, when connecting only a two-pole type power plug without a ground terminal, it is not necessary to use the plug ground cover 3, so that the plug conversion adapter can be miniaturized, and is excellent in portability. Usability is improved.

  In the above description, the auxiliary plug is used when the plug conversion adapter is attached to any of the B3 type, BF type, BF three-point type, or O2 type power outlets. If a plug earth cover as shown in FIGS. 9 (a) and 9 (b) or FIGS. 11 (a) and 11 (b) is used, an auxiliary plug becomes unnecessary. A plug conversion adapter according to this embodiment (third embodiment) will be described below with reference to FIGS. Only parts different from the plug conversion adapter described above will be described, and description of the same parts will be omitted.

  FIG. 9 is an explanatory view when the plug conversion adapter according to the third embodiment of the present invention is used in correspondence with various types (BF, B3, O2) of power outlets, and FIG. 10 is a third embodiment of the present invention. FIG. 11 is an explanatory diagram when the plug conversion adapter according to the embodiment is used in correspondence with various types (BF, B3) of power outlets, and FIG. 11 is a plug ground cover of the plug conversion adapter according to the third embodiment of the present invention. The front view of each is shown.

  Also in the plug conversion adapter according to the third embodiment, the shape of the adapter main body is the same as that shown in FIG. 1, and the difference is the form of the plug ground cover as described later.

  That is, the plug ground cover (3A-1 or 3A-2) used in this embodiment is not provided with the insertion hole 32 as shown in FIG. The first master key pin 42 and the second master key pin 43 described above as shown in FIG. 11A or the fourth master key pin 45 as shown in FIG. . The plug conversion adapter 1B having the plug ground cover 3A-1 shown in FIG. 11A is a form when used for a BF type, BF three-point type, and O2 type power outlet. On the other hand, the plug conversion adapter 1B having the plug ground cover 3A-2 shown in FIG. 11B is a form when used for a B3 type power outlet.

  As described above, the first master key pins 42 and 42 are inserted into shutter opening / closing pin holes provided in a BF type or BF three-point type power outlet. The second master key pin 43 extends from the tip of the first master key pins 42 and 42 and is inserted into a shutter opening / closing pin hole provided in an O2 type power outlet to close the power extraction pin hole. The point of opening the shutter is the same as described above.

  On the other hand, the fourth master key pin 45 is the same as described above in that it opens the shutter that is inserted into the shutter opening / closing pin hole provided in the B3 type power outlet and closes the power extraction pin hole.

  Further, in the plug conversion adapter 1C of the type shown in FIG. 10, unlike the above, the adapter main body 2A shown in FIG. 4 is used for the adapter main body. The configuration of the plug ground cover is substantially the same as described above, but the length of the second master key pin 43 or the fourth master key pin 45 is longer than that of the above by the length of the extending portion 5. Other points are the same as described above.

  When such a plug conversion adapter 1B according to the third embodiment is used, the plug conversion adapter 1B can be used for a BF type or BF three-point type power outlet or an O2 type power outlet without using the auxiliary plug 4 described above. Therefore, it is excellent in portability and convenient for the user.

It is a figure which shows the structure of the adapter main body of the plug conversion adapter of 1st Embodiment which concerns on this invention, (a) is a front view, (b) is a back view, (c) is a perspective view, (d) is a side view. , (E) is a partial cross-sectional view. It is a figure which shows the structure of the plug ground cover of the plug conversion adapter of 1st Embodiment which concerns on this invention, (a) is a front view, (b) is a rear view, (c) is a side view, (d) is an upper surface. Figure. It is a figure which shows the structure of the plug conversion adapter of 1st Embodiment which concerns on this invention, (a) is a front view, (b) is a rear view. It is a figure which shows the structure of the adapter main body of the plug conversion adapter of 2nd Embodiment which concerns on this invention, (a) is a front view, (b) is a back view, (c) is a perspective view, (d) is a side view. . It is a figure which shows the structure of the auxiliary | assistant plug in the plug conversion adapter instrument of embodiment which concerns on this invention, (a) And (b) is a perspective view, (c) is a side view. Explanatory drawing in the case of using the plug conversion adapter which concerns on 1st Embodiment which concerns on this invention corresponding to the power outlet of various types (A, B, O type). Explanatory drawing in the case of using the plug conversion adapter which concerns on 2nd Embodiment which concerns on this invention corresponding to a power outlet of various types (C, SE type). Explanatory drawing in the case of using the plug conversion adapter instrument based on this invention corresponding to the power outlet of various types (BF, B3, O2 type). Explanatory drawing in the case of using the plug conversion adapter which concerns on the other form which concerns on this invention corresponding to the power outlet of various types (BF, B3, O2 type). Explanatory drawing in the case of using the plug conversion adapter which concerns on the other form which concerns on this invention corresponding to a power outlet of various types (BF, B3 type). The front view of the plug ground cover of the plug conversion adapter which concerns on this invention. The partial cross section figure which shows the state which connected the power plug to the plug conversion adapter of 1st Embodiment which concerns on this invention. The partial cross section figure which shows the state which connected the power plug of the 3 pole type to the conventional adapter plug.

Explanation of symbols

1, 1A Plug conversion adapter 2, 2A Adapter body 21 Casing 22 Adapter pin 23 Socket 24 Guide groove 25 Power supply confirmation lamp 26 Recess 3, 3A-1, 3A-2 Plug ground cover 31 Casing 32 Insertion hole 33 Guide rail 34 Protrusion 35 Body 4 Auxiliary Plug 41 Substrate 42 First Master Key Pin 43 Second Master Key Pin 44 Third Master Key Pin 45 Fourth Master Key Pin 46 Pin Insertion Hole 47 Recess 5 Extension Port 61 Power Outlet (A Type)
62 Power outlet (Type B)
63 Power outlet (O type)
64 Power outlet (C type)
65 Power outlet (SE type)
66 Power outlet (BF type)
67 Power outlet (B3 type)
68 Power outlet (O2 type)
D1 first groove
D2 Second groove
OP1 first opening
OP2 Second opening
SH Elongated hole

Claims (10)

When connecting a power plug of an electrical device to a power outlet, if the power outlet and the power plug do not correspond, a plug that is interposed between the power outlet and the power plug to electrically connect both A conversion adapter,
An adapter body, and a plug ground cover that is detachably attached to the adapter body.
The adapter body is
A pair of adapter pins corresponding to the power outlet;
A pair of sockets electrically connected to the pair of adapter pins and corresponding to the power plug;
A first groove provided between the pair of sockets and having a first opening on a side to which the plug ground cover is attached ;
The plug ground cover is
A second groove having a second opening on the side to which the adapter body is attached;
When the plug ground cover is attached to the adapter body, the first groove and the second groove are abutted to form an elongated hole,
Plug adapter elongate shape of the holes, the power plug, characterized in that if a three-terminal plug having a ground terminal or a shutter opening and closing pin is insertable said ground terminal or the shutter opening and closing pins. The adapter body has a guide rail or a guide groove, and the plug ground cover has a guide groove corresponding to the guide rail provided in the adapter body or a guide corresponding to the guide groove provided in the adapter body. The plug conversion adapter according to claim 1, wherein the plug ground cover is slidably attached to the adapter main body by having a rail. When the supply voltage of the power outlet is detected when one end of the adapter pin is inserted into the power outlet when the pair of sockets are disposed on the surface provided with the pair of sockets, It has a detection display means for displaying this,
3. The plug conversion adapter according to claim 1, wherein the detection display means can be confirmed from the outside in a state where the power plug is not inserted. While extending to the adapter body, and having an extension portion for attaching the pair of plugs,
The extending portion is inserted into the recess when the pair of plugs is attached to the outer shape when the power outlet is a power outlet having a recess such as a C-type power outlet or an SE-type power outlet. The plug conversion adapter according to any one of claims 1 to 3, wherein the outer shape has a possible size. The plug conversion adapter according to any one of claims 1 to 4, wherein the second groove is provided with an insertion hole penetrating in a length direction thereof . On the front side of the plug ground cover,
A first master key pin inserted into a shutter opening / closing pin hole provided in a BF type or BF three-point type power outlet;
A second master key pin that extends from the tip of the first master key pin and opens a shutter that is inserted into a shutter opening / closing pin hole provided in an O2 type power outlet to close the power extraction pin hole; The plug conversion adapter according to any one of claims 1 to 3, wherein the plug conversion adapter is protruded by integral molding. On the front side of the plug ground cover,
4. A fourth master key pin that projects from a shutter opening / closing pin hole provided in a B3 type power outlet to open a shutter closing the power extraction pin hole is provided. The plug conversion adapter according to any one of claims. On the front side of the plug ground cover,
A first master key pin inserted into a shutter opening / closing pin hole provided in a BF type or BF three-point type power outlet;
A second master key pin that extends from the tip of the first master key pin and opens a shutter that is inserted into a shutter opening / closing pin hole provided in an O2 type power outlet to close the power extraction pin hole; The plug conversion adapter according to claim 4, wherein the plug conversion adapter is protruded by integral molding. On the front side of the plug ground cover,
5. The fourth master key pin is provided to protrude from the shutter opening / closing pin hole provided in the B3 type power outlet to open the shutter closing the power extraction pin hole. Plug conversion adapter. Used when the plug conversion adapter according to any one of claims 1 to 5 and the plug conversion adapter are attached to a power outlet of any of B3 type, BF type, BF three-point type, or O2 type. A plug conversion adapter device having an auxiliary plug,
The auxiliary plug is
One substrate formed of an insulator;
A first master key pin protruding from the surface of the substrate and inserted into a shutter opening / closing pin hole provided in a BF type or BF three-point type power outlet;
A second master key pin that extends from the tip of the first master key pin and opens a shutter that is inserted into a shutter opening / closing pin hole provided in an O2 type power outlet to close the power extraction pin hole;
A pair of shutters provided on the shutter of the BF three-point type power outlet at the same time as the first master key pin is inserted into the shutter opening / closing pin hole of the BF three-point type power outlet. A pair of third master key pins that are inserted into the open / close pin grooves and cooperate with the first master key pins to open the shutter that closes the power extraction pin holes;
A fourth master key pin that projects from the back surface of the substrate and opens a shutter that is inserted into a shutter opening / closing pin hole provided in a B3 type power outlet to close the power extraction pin hole;
A recess formed on the back surface of the substrate and having the same shape as the cross-sectional shape of the extended portion;
A plug conversion adapter device comprising: a pin insertion hole that is formed inside the concave portion, penetrates from the back surface to the front surface of the substrate, and into which the power plug is inserted.

Images