JP6854547B2 - plug - Google Patents

Description

The present invention relates to a plug including an electrode plug that is plugged into an outlet.

At construction sites and buildings, various electrical devices are used as load devices. In a load device, electric leakage may occur for some reason, so for example, a plug as disclosed in Patent Document 1 may be used. The plug of Patent Document 1 electrically connects an outlet and a load device, and when an electric leakage occurs in the load device, it instantly detects this and shuts off the energization of the load device.

Further, in recent years, there are an increasing number of cases where a plurality of load devices that need to be grounded are used in one environment. Therefore, it is desired that the plug of Patent Document 1 be provided with a plurality of three-pole outlets for electrically connecting the load device, for example, as shown in Patent Document 2.

Japanese Unexamined Patent Publication No. 2001-351501 Japanese Unexamined Patent Publication No. 2007-173124

The plug according to Patent Document 1 is used by directly inserting it into an outlet of a commercial power source, and it is desirable that the plug is as compact as possible. However, as shown in Patent Document 2, when the three-pole outlet portions are arranged in a row, the housing of the plug is inevitably lengthened in the arranged direction.

On the other hand, it is conceivable to provide the three-pole outlet portion on different surfaces of the housing. However, in order to reliably insulate the ground terminal and the power supply terminal, it is necessary to leave a certain distance between the ground terminal and the power supply terminal. Then, even if the three-pole outlet portions are simply arranged on different surfaces of the housing, the size of the housing may inevitably increase.

In view of the above points, it is an object of the present invention to provide a plug capable of realizing miniaturization of the housing while arranging each of the three-pole outlet portions on different surfaces of the housing.

The plug according to one aspect of the present invention is a plug provided with an electrode plug to be inserted into a commercial outlet, and a first outlet portion is provided on each of the surfaces other than the surface on which the electrode plug is projected and which intersects with each other. A housing provided with a second outlet portion, a first power blade receiving portion disposed inside the housing and extending along a power plug blade inserted into the first outlet portion, and the first power blade receiving portion. 2 A power blade receiver having a second power blade receiving portion extending along the power plug blade inserted into the outlet portion, and a power blade receiving portion provided inside the housing and in the vicinity of the first power blade receiving portion. The first power supply blade receiving portion and the first ground blade receiving portion extending along the ground pin inserted into the first outlet portion, the second power supply blade receiving portion and the second power supply blade receiving portion in the vicinity of the second power supply blade receiving portion. A grounding blade holder having a second grounding blade receiving portion extended along a grounding pin inserted into a second outlet portion, and inside the housing, around the extending direction of the first grounding blade receiving portion. It is arranged so as to surround the first ground blade receiving portion and surround the second ground blade receiving portion around the extending direction of the second ground blade receiving portion, and is arranged so as to surround the power supply blade receiving portion and the grounding blade receiving portion. given the insulating member for securing a creeping distance, are provided on the surface where the electrode plug is projected in the housing, e Bei a crimp terminal having a function of the ground terminal, the first power blade and The receiving portion covers the tip portion of the inserted power plug blade in the insertion direction, and the second power supply blade receiving portion opens the tip portion of the inserted power plug blade in the insertion direction, and the first power plug blade receiving portion and the tip portion in the insertion direction. The second power supply blade receiving portion extends in different directions from each other, and the end portion of the second power supply blade receiving portion that opens the tip portion of the inserted power plug blade in the insertion direction is the first power supply blade receiving portion. The first ground blade receiving portion is arranged close to the side of the above, and the first ground blade receiving portion opens the tip portion in the insertion direction of the inserted ground pin, and the second ground blade receiving portion covers the tip portion in the insertion direction of the inserted earth pin. The first ground blade receiving portion and the second ground blade receiving portion extend in different directions from each other, and the end portion of the first ground blade receiving portion that opens the tip portion of the inserted ground pin in the insertion direction is The grounding blade holder is arranged close to the side of the second grounding blade receiving portion, and further has a grounding terminal plate to which the first grounding blade receiving portion and the second grounding blade receiving portion are fixed. The ground terminal plate is connected to the crimp terminal and conducts. I am doing it .

Here, the power supply blade receiver has a first power supply blade receiver portion and a second power supply blade receiver portion, and the ground blade receiver has a first ground blade receiver portion and a second ground blade receiver portion. Of these, the first outlet portion is composed of a first power supply blade receiving portion and a first ground blade receiving portion, and the second outlet portion is composed of a second power supply blade receiving portion and a second ground blade receiving portion. To. With this configuration, it is possible to realize a configuration in which each of the three pole outlets is arranged on each of the surfaces that intersect with each other. In particular, due to the insulating member that surrounds the grounding blade holder, the creepage distance between the powering blade holder and the grounding blade holder required for insulation can be reduced without physically increasing the distance between the grounding blade holder and the power supply blade holder. It is secured. As a result, reliable insulation can be realized. Therefore, it is possible to reduce the size of the housing while arranging the three-pole outlet portions on different surfaces of the housing.

Further, in the front view of the first outlet portion, the first ground blade receiving portion surrounded by the insulating member is located between the pair of the first power supply blade receiving portions, and is located in the second outlet portion. In front view, the second ground blade receiving portion surrounded by the insulating member may be located between the pair of the second power supply blade receiving portions.

Here, since the insulating member secures the creepage distance between the first power supply blade receiving portions and the second power supply blade receiving portions, more reliable insulation is possible.

Further, the first outlet portion and the second outlet portion may be provided on a surface of the housing that is perpendicular to each other.

In this way, the first outlet portion and the second outlet portion can be arranged on the surfaces that are perpendicular to each other.

Further, the first power supply blade receiving portion covers the tip portion of the inserted power plug blade in the insertion direction, and the second power supply blade receiving portion opens the tip portion of the inserted power plug blade in the insertion direction. May be good.

As a result, the tip portion of the power plug blade inserted into the second power supply blade receiving portion becomes close to the power plug blade inserted into the first power supply blade receiving portion. That is, the plug has a structure in which the power plug blades are brought close to each other to the limit. Therefore, the housing of the plug can be made smaller than the case where both power supply blade receiving portions cover the power plug blade.

Further, the first ground blade receiving portion may open the tip portion in the insertion direction of the inserted ground pin, and the second ground blade receiving portion may cover the tip portion in the insertion direction of the inserted ground pin.

As a result, the tip portion of the ground pin inserted into the first ground blade receiving portion becomes close to the ground pin inserted into the second ground blade receiving portion. That is, the plug has a structure in which the ground pins are brought close to each other to the limit. Therefore, the housing of the plug can be made smaller than the case where both ground blade receiving portions cover the ground pin.

According to the present invention, it is possible to reduce the size of the housing while arranging the three-pole outlet portions on different surfaces of the housing.

It is an external view of the plug which concerns on this embodiment. It is a perspective view which looked at the plug in the state which the housing was divided into two from the diagonally upper left side. It is the figure which showed the structure inside the housing, and disassembled the component parts about a 1st outlet part and a 2nd outlet part. It is an exploded view of the component part of the ground terminal board which concerns on FIG. FIG. 3 is a perspective view of an assembled body of parts related to the first outlet portion and the second outlet portion according to FIG. 3 as viewed from diagonally upper right. It is a top view of the assembly of FIG. It is a front view of the assembly of FIG. It is external drawing of the outlet which concerns on other embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following preferred embodiments are merely exemplary in nature and are not intended to limit the invention, its scope of application or its use.

<< Embodiment >>
(Outline of plug)
The plug 10 according to the present embodiment electrically connects an outlet (commercial outlet) installed at a construction site or a building to a load device, and when an electric leakage occurs in the load device, it instantly detects this. It is an earth leakage detection circuit breaker that cuts off the supply of commercial power to load equipment. In particular, the plug 10 is a plug that can be used without an adapter in both the case where the outlet is a 3-pole outlet having a ground pin insertion hole and the case where the outlet is a 2-pole outlet without a ground pin insertion hole.

In the following, when the plug 10 is inserted into an outlet, the surface of the plug 10 facing the front side is referred to as "front", and the surface facing the outlet is referred to as "rear". Each direction of "up", "down", "left", and "right" is defined based on the state in which the plug 10 is inserted into the outlet.

As shown in FIGS. 1 and 2, the front surface 21 of the housing 20 of the plug 10 is supplied with the power supply display unit 21a, the pole number display unit 21b, and the commercial power to the load device in this order from top to bottom. An ON button 21c for turning on and a test button 21d for confirming whether the plug 10 operates normally (that is, whether the supply of commercial power to the load device is cut off when an electric leakage occurs) are provided. .. FIG. 1 illustrates a case where the power supply display unit 21a is located on the left side surface 28L side of the pole number display unit 21b.

Further, on the lower portion of the front surface 21 of the housing 20 and the bottom surface 23, three pole outlet portions 31 and 33 serving as connection ports with the load device are provided one by one. An insertion plug 25 for being inserted into the outlet is provided on the back surface 24 of the housing 20. That is, the plug 10 is inserted into the outlet with the front surface 21 of the housing 20 facing the front side, and the plug of the load device is inserted into the three-pole outlet portions 31 and 33, whereby the outlet and the load are inserted. Electrically connect to the device.

A crimp terminal 26 having a function of a ground terminal of the plug 10 is provided at a position below the insertion plug 25 and closer to the left side surface 28L on the back surface 24 of the plug 10. A release button 28a for switching the number of poles of the insertion plug 25 is provided on the left side surface 28L of the housing 20 near the upper surface 22.

In such a plug 10, when the ON button 21c is pressed and the plug 25 is inserted into the outlet, the power display unit 21a lights up. That is, the power supply display unit 21a is for displaying the energization state, and when the power supply between the outlet and the load device or the like can be energized via the plug 10, the power supply display unit 21a lights up. As a result, the user who uses the plug 10 can know that the commercial power is normally conducted. If an overcurrent or electric leakage occurs on the load device side while the outlet and the load device are electrically connected, the supply of commercial power to the load device is cut off in the plug 10 and turned on. The button 21c projects from the pressed state to the front side, and the power display unit 21a turns off. This allows the user to know that an overcurrent or earth leakage has occurred.

Further, when the test button 21d is pressed, a pseudo ground fault state is created inside the housing 20, and power is supplied to the three-pole outlet portions 31 and 33. Also in this case, the power display unit 21a is turned off. As a result, the user can know that the plug 10 is operating normally (the test is performed normally).

After an overcurrent or an electric leakage occurs, and after the operation check of the plug 10 by the test button 21d is completed, the plug 10 can be used again as an electric leakage detection circuit breaker by pressing the ON button 21c again. It becomes.

Further, when the plug 10 is inserted into the outlet, if the outlet is for 2 poles, the plug 25 of the plug 10 needs to be 2 poles, and if the outlet is for 3 poles, the plug 25 needs to be 3 poles. The release button 28a is for preventing the plug 25 to be inserted into the plug 25 from being in the state of two poles even though the outlet is for three poles, and the pole number display unit 21b is for the plug 25. It represents the state of the number of poles.

Specifically, the plug 25 is composed of two electrode plugs 25a and one ground plug 25b. Regardless of whether or not the release button 28a is pressed, the two electrode plugs 25a are always projected from the back surface 24. The ground plug 25b is locked in the housing 20 when the release button 28a is not pressed, and is projected from the back surface 24 substantially parallel to the two electrode plugs 25a. When the release button 28a is pressed, the lock of the ground plug 25b is released, and the ground plug 25b can be stored in the housing 20.

Therefore, when the release button 28a is not pressed, the plug 25 maintains the three-pole state. The plug 10 in this state can be plugged into a three-pole outlet.

On the other hand, when inserting the plug 10 into the 2-pole outlet, the user inserts the plug 10 into the 2-pole outlet while holding down the release button 28a. At this time, the tip of the unlocked ground plug 25b eventually comes into contact with the surface of the two-pole outlet. As the plug 10 is still inserted into the 2-pole outlet, a force is applied to the ground plug 25b in the direction opposite to the direction in which it is inserted into the 2-pole outlet, and the ground plug 25b is housed in the housing 20. To. At this time, the number of poles display unit 21b displays a color indicating that the plug 25 is in the state of two poles.

When the plug 10 inserted in the two-pole outlet is pulled out from the outlet, the ground plug 25b automatically protrudes from the back surface 24 of the housing 20, and the insertion plug 25 returns to the state shown in FIG. 1 (three-pole state). .. At this time, the number of poles display unit 21b displays a color indicating that the plug 25 is in the state of three poles.

(Detailed configuration of outlet)
Hereinafter, the configurations of the outlet units 31 and 33 will be described with reference to FIGS. 2 to 7.

As shown in FIGS. 1 and 2, in addition to the housing 20 described above, the plug 10 includes power blade holders 81 and 85, a ground blade holder 90, and a load insulating wall 99 (corresponding to an insulating member). Be prepared.

− Housing −
The housing 20 has an elongated hollow shape in the vertical direction (X direction) of FIGS. 1 and 2.

Specifically, the housing 20 can be separated into two members in the Z direction at the central portion in the Z direction of FIG. FIG. 2 shows a state in which the housing 20 is separated into two members, a front cover 20a and a rear cover 20b. The front cover 20a and the rear cover 20b are located at positions corresponding to the engaging claws provided at the ends of the left side surface 28L of the front cover 20a and the engaging claws with the openings facing each other. After being provided, the engagement recess of the cover 20b is fitted. The front cover 20a and the rear cover 20b are screwed and fixed to the four corners from the back surface 24 side of the rear cover 20b by tapping screws (not shown). As a result, the housing 20 is in the state shown in FIG. 1, and a closed space is formed inside the housing 20.

As shown in FIG. 2, the front cover 20a forms a part of all of the front surface 21 and the bottom surface 23 of the housing 20, the upper surface 22 and both side surfaces 28L and 28R. The rear cover 20b forms all of the back surface 24 of the housing 20, the top surface 22 and the rest of the side surfaces 28L, 28R. The rear cover 20b has a partition plate 20ba. The partition plate 20ba extends in the Y direction from the left side surface 28L to the right side surface 28R (see FIG. 3), and divides the inside of the rear cover 20b into two in the vertical direction (X direction) in FIG.

The front cover 20a is provided with display portions 21a and 21b, and the buttons 21c, 21d and 28a are provided in a state of being exposed to the outside of the plug 10. A button cap and a name plate are placed in order on the front surface 21 of the front cover 20a. The button cap is made of a flexible insulating member such as rubber, and is arranged so as to cover the buttons 21c and 21d in a part of the front surface 21 including the arrangement positions of the buttons 21c and 21d. The name plate is a flat plate on which each of the display units 21a and 21b and the buttons 21c and 21d is described. The name plate covers almost the entire front surface 21 from above the button cap with the surface on which these notations are marked as the front side.

In particular, one 3-pole outlet is provided as the first outlet portion 31 at the lower part of the front surface 21 of the front cover 20a, and one 3-pole outlet is provided as the second outlet on the bottom surface 23 which is substantially perpendicular to the front surface 21. It is provided as a unit 33. That is, one first outlet portion 31 and one second outlet portion 33 are provided on the surfaces 21 and 23 of the housing 20 other than the protruding surface (back surface 24) of the insertion plug 25. The first outlet portion 31 and the second outlet portion 33 are located on the bottom surface 23 side of the rear cover 20b with respect to the partition plate 20ba when the front cover 20a is fixed to the rear cover 20b in the state of FIG. It can be said that.

As shown in FIG. 3, inside the housing 20, an insulating plate 29a, a printed circuit board 29b on which a circuit for detecting and blocking an electric leakage is mounted, and a ground plug 25b are projected to the outside of the housing 20 or a housing. A mechanism 29c or the like for storing in the body 20 is stored. The insulating plate 29a is a plate-shaped member located on the upper surface 22 side of the partition plate 20ba and extending along the partition plate 20ba. The printed circuit board 29b is located near the insulating plate 29a and on the upper surface 22 side of the insulating plate 29a. The insulating plate 29a suppresses the printed circuit board 29b from receiving electrical interference from the outlet portions 31 and 33.

Further, in the portion of the inside of the housing 20 corresponding to the first outlet portion 31 and the second outlet portion 33, a blade receiver 90 for grounding, a load insulating wall 99 (corresponding to an insulating member), a blade receiver 81 for power supply, and the like. 85 are arranged so as to be laminated in this order.

-Blade holder for power supply-
When the power plugs 170 and 180 (see FIG. 5) of the load device are inserted into the outlets 31 and 33, the power blade holders 81 and 85 are the power plug blades 182, 186, 183 of the plugs 170 and 180. It is for sandwiching 187 and is made of a metal (copper or the like) having relatively good conductivity. In FIG. 3, the power supply blade receiver 81 is arranged on the right side surface 28R side of the housing 20, and the power supply blade receiver 85 is arranged on the left side surface 28L side of the housing 20. When the power blade receiver 81 and the power blade receiver 85 are arranged inside the housing 20, they are symmetrical with respect to the broken line L1 extending in the X direction according to FIG.

Specifically, the power supply blade receiver 81 has a first power supply blade receiving portion 82 and a second power supply blade receiving portion 83, and the power supply blade receiving portion 85 has a first power supply blade receiving portion 86 and a second power supply blade receiving portion 86. It has a part 87.

As shown in FIG. 5, the first power blade receiving portion 82 extends in the Z direction along the power plug blade 182 of the power plug 170 inserted into the first outlet portion 31, and the first power blade receiving portion 86 , It extends in the Z direction along the power plug blade 186 of the power plug 170. As a result, the first power blade receiving portions 82 and 86 of the blade receivers 81 and 85 for each power supply hold and fix the two-pole power plug blades 182 and 186 of the power plug 170, respectively.

The second power blade receiving portion 83 extends in the X direction along the power plug blade 183 of the power plug 180 inserted into the second outlet portion 33, and the second power blade receiving portion 87 extends the power supply of the power plug 180. It extends in the X direction along the plug blade 187. As a result, the second power blade receiving portions 83 and 87 of the power blade receivers 81 and 85 sandwich and fix the two-pole power plug blades 183 and 187 of the power plug 180, respectively.

More specifically, the first power supply blade receiving portion 82 and the second power supply blade receiving portion 83 of the power supply blade receiving portion 81 are integrally formed of one plate-shaped metal, and are integrally formed with FIGS. 3, 5, and 7. As shown in the above, when viewed from the bottom surface 23 side of the housing 20, the cross sections in the Z direction are all U-shaped at the same height. That is, the first power supply blade receiving portion 82 is convex toward the insertion direction side of the power plug blade 182, but the second power supply blade receiving portion 83 is not on the insertion direction side of the power plug blade 183 but in the insertion direction. It is convex in the direction perpendicular to it. The width of the first power blade receiving portion 82 in the Z direction is longer than the width of the second power blade receiving portion 83 in the Z direction, but the width of the first power blade receiving portion 82 in the X direction is the width of the second power blade receiving portion 82. It is shorter than the width of the part 83 in the X direction. The length of each width is determined according to the extended lengths of the power plug blades 182 and 183 to be pinched and fixed in different insertion directions between the first power blade receiving portion 82 and the second power blade receiving portion 83. ing. In each of the first power blade receiving portion 82 and the second power blade receiving portion 83, the tip portion on the front surface 21 side of the first power supply blade receiving portion 82 and the tip portion on the bottom surface 23 side of the second power supply blade receiving portion 83 are molded. It is expanded toward the outside of the body 20.

According to the above configuration, when the power plugs 170 and 180 are inserted into the outlets 31 and 33, the first power blade receiving portion 82 covers the tip of the power plug blade 182 in the insertion direction, but the second power blade receiving portion 83 opens the tip of the power plug blade 183 in the insertion direction. That is, when the power plugs 170 and 180 are inserted, the power plug blade 183 of the power plug 180 is fixed to the power plug blade 182 of the power plug 170 in a state of being close to the limit. As a result, the size of the housing 20 can be reduced as compared with the case where both the first power supply blade receiving portion 82 and the second power supply blade receiving portion 83 cover the tip portions of both power plug blades 182 and 183 in the insertion direction. ing.

The first power supply blade receiving portion 86 and the second power supply blade receiving portion 87 of the power supply blade receiving portion 85 are the same as the above details, and thus the description thereof will be omitted.

Further, as shown in FIG. 3, each of the power supply blade receivers 81 and 85 is formed with recesses 81a and 85a on the back surface 24 side at a portion extending in the X direction from the first power supply blade receivers 82 and 86. There is. The power blade receivers 81 and 85 are fixed to the rear cover 20b by engaging the recesses 81a and 85a with the grooves formed in the partition plate 20ba.

-Ground blade holder-
The grounding blade holder 90 is for sandwiching the ground pins 194 and 196 of the plugs 170 and 180 when the power plugs 170 and 180 (see FIG. 5) of the load device are inserted into the outlets 31 and 33. It is made of a metal (copper, etc.) with relatively good conductivity. The grounding blade receiver 90 has an earth terminal plate 91, a first earth blade receiving portion 94, and a second earth blade receiving portion 96 shown in FIG. 4, and is configured by combining these as shown in FIG. There is.

As shown in FIG. 4, the ground terminal plate 91 includes a flat plate portion 92 extending in the XY direction and a protruding portion 93 configured to protrude from a part of the flat plate portion 92 in a stepwise manner in the Z direction. Have. Three through holes 92a, 92b, and 92c are formed in the flat plate portion 92 at intervals from each other. Screws 98a, 98b, 98c for attaching the ground terminal plate 91 to the rear cover 20b are screwed into the through holes 92a, 92b, 92c. The protruding portion 93 has a shape extending in the order of the Z direction, the XY direction, and the Z direction from the root to the tip. One through hole 93a and one 93b are formed in the portion extending in the XY direction and the protruding tip portion extending in the Z direction from the XY direction. The through holes 93a and 93b are holes for inserting the copper studs 95 and 97. The copper stud 95 fixes the first ground blade receiving portion 94 to the protruding tip portion extending in the Z direction from the XY direction, and the copper stud 97 fixes the second ground blade receiving portion 96 to the portion extending in the XY direction. To.

The ground terminal plate 91 is connected to and conductive with the crimp terminal 26 related to the back surface 24 of the housing 20. As a result, the crimp terminal 26 can function as a ground terminal.

The first ground blade receiving portion 94 sandwiches and fixes the ground pin 194 (see FIG. 5) of the power plug 170 to be inserted into the first outlet portion 31. As shown in FIG. 5, the first ground blade receiving portion 94 extends in the Z direction along the first power blade receiving portions 82, 86 and the ground pin 194 in the vicinity of the first power blade receiving portions 82, 86. There is. Specifically, as shown in FIG. 4, the first ground blade receiving portion 94 has a pair of projecting portions 94a and 94b that project along the Z direction and are located at predetermined distances in the Y direction from each other, and the projecting portions. It has a connecting portion 94c that is integrally formed with the 94a and 94b and connects the protruding portions 94a and 94b to each other. The predetermined distance is about the diameter of the ground pin 194 to be inserted, and the protruding lengths of the protruding portions 94a and 94b are determined according to the extended length of the ground pin 194. The tip portions of the protruding portions 94a and 94b on the front surface 21 side are widened toward the outside of the housing 20. Although not shown, the connecting portion 94c is formed with a through hole for the copper stud 95.

The second ground blade receiving portion 96 sandwiches and fixes the ground pin 196 (see FIG. 5) of the power plug 180 inserted into the second outlet portion 33. As shown in FIG. 5, the second ground blade receiving portion 96 extends in the X direction along the second power blade receiving portions 83, 87 and the ground pin 196 in the vicinity of the second power blade receiving portions 83, 87. There is. Specifically, as shown in FIG. 4, the second ground blade receiving portion 96 has a pair of projecting portions 96a and 96b projecting along the X direction and located at a predetermined distance in the Y direction from each other, and the projecting portions. It has a connecting portion 96c that is integrally formed with the 96a and 96b and connects the protruding portions 96a and 96b to each other. The predetermined distance is about the diameter of the ground pin 196 to be inserted, and the protruding lengths of the protruding portions 96a and 96b are determined according to the extended length of the ground pin 196. The tip portions of the protruding portions 96a and 96b on the bottom surface 23 side are widened toward the outside of the housing 20. A through hole 96ca for copper stud 97 is formed in the connecting portion 96c.

When the above-mentioned ground terminal plate 91, the first ground blade receiving portion 94, and the second ground blade receiving portion 96 are assembled, the shape of the grounding blade receiver 90 shown in FIG. 3 is obtained. As a result, when the power plugs 170 and 180 are inserted into the outlets 31 and 33, the second ground blade receiving portion 96 covers the tip of the earth pin 196 in the insertion direction, but the first ground blade receiving portion 94 The tip of the earth pin 194 in the insertion direction is opened. That is, when the power plugs 170 and 180 are inserted, the ground pin 194 of the power plug 170 is fixed to the ground pin 196 of the power plug 180 in a state of being close to the limit. As a result, the size of the housing 20 can be reduced as compared with the case where the first ground blade receiving portion 94 and the second ground blade receiving portion 96 both cover the tip portions of both ground pins 194 and 196 in the insertion direction. ..

-Load insulation wall-
The load insulating wall 99 is a component that insulates the blade receivers 81 and 85 for power supply and the blade receiver 90 for grounding. The load insulating wall 99 has a bottom portion 99a, a first enclosure portion 99b, and a second enclosure portion 99c, which are integrally molded with a resin such as plastic.

The bottom portion 99a extends in the XY direction along the flat plate portion 92 of the ground terminal plate 91, except for the portions corresponding to the screws 98a, 98b, 98c. The portion of the bottom portion 99a corresponding to the screws 98a and 98c bulges according to the shape of the heads of the screws 98a and 98c so as to cover the heads of the screws 98a and 98c.

As shown in FIG. 5, the first enclosing portion 99b surrounds the first ground blade receiving portion 94 around the extending direction (Z direction) of the first ground blade receiving portion 94. As shown in FIG. 6, the first enclosure portion 99b is a tubular member having a substantially rectangular shape when viewed from the Z direction (front surface 21 side), and is a base of the first ground blade receiving portion 94. It extends in the Z direction from the tip to the vicinity of the tip.

As shown in FIG. 5, the second enclosing portion 99c surrounds the second ground blade receiving portion 96 around the extending direction (X direction) of the second ground blade receiving portion 96. As shown in FIG. 7, the second enclosure portion 99c has a substantially U-shape that is convex upward when viewed from the X direction (bottom surface 23 side), and the second ground blade receiving portion 96. It extends in the X direction from the root of the blade to the vicinity of the tip. To be precise, the load insulating portion 99 is attached to the rear cover 20b, so that the second surrounding portion 99c and the rear cover 20b surround the second ground blade receiving portion 96 around the extension direction.

The first enclosure 99b and the second enclosure 99c ensure a predetermined creepage distance between the power supply blade receivers 81 and 85 and the ground blade receiver 90, and ensure insulation. That is, the creepage distance between the first ground blade receiving portion 94 and the first power supply blade receiving portions 82 and 86 is defined by the distance along the wall of the first enclosure portion 99b, and the second ground blade receiving portion 96 and the second ground blade receiving portion 96 and the second. The creepage distance to each of the power blade receiving portions 83 and 87 is defined by the distance along the wall of the second enclosure portion 99c. As described above, the surrounding portions 99b and 99c surround the ground blade receiving portions 94 and 96 around the extending direction of the ground blade receiving portions 94 and 96, so that the creepage distance is the distance required for insulation. I'm able to earn.

Then, when viewed from the front of the first outlet portion 31, that is, from the front 21 side of the housing 20, as shown in FIG. 6, the first ground blade receiving portion 94 surrounded by the first enclosure portion 99b is It is located between a pair of first power supply blade receiving portions 82 and 86 in the Y direction. When viewed from the front of the second outlet portion 33, that is, from the bottom surface 23 side of the housing 20, as shown in FIG. 7, the second ground blade receiving portion 96 surrounded by the second enclosure portion 99c and the rear cover 20b. Is located between a pair of second power supply blade receiving portions 83 and 87 in the Y direction. With this arrangement, not only the creepage distance between the ground blade receiving portions 94, 96 and the power supply blade receiving portions 82, 83, 86, 87, but also the creepage distance between the first power supply blade receiving portions 82, 86 and the second power supply. The creepage distance between the blade receiving portions 83 and 87 can also increase the distance required for insulation. Therefore, in this embodiment, it can be said that stronger insulation is secured.

The thicknesses of the bottom portion 99a, the first enclosure portion 99b, and the second enclosure portion 99c may be substantially the same or may differ depending on the portion.

(effect)
In the present embodiment, as shown in FIGS. 3 and 5, each of the power supply blade receivers 81 and 85 has a first power supply blade receiver 82 and 86 and a second power blade receiver 83 and 87 for grounding. The blade receiver 90 has a first ground blade receiving portion 94 and a second ground blade receiving portion 96. Of these, the first outlet portion 31 is composed of a pair of first power blade receiving portions 82 and 86 and a first ground blade receiving portion 94, and the second outlet portion 33 is a pair of second power blade receiving portions. It is composed of portions 83 and 87 and a second ground blade receiving portion 96. With this configuration, it is possible to realize a configuration in which the three-pole outlet portions 31 and 33 are arranged on the surfaces 21 and 23 that intersect with each other.

In particular, the first ground blade receiving portion 94 and the second ground blade receiving portion 96 are each surrounded by the first enclosure portion 99b and the second enclosure portion 99c of the load insulating wall 99, respectively. As a result, the creepage distance between the power supply blade holders 81 and 85 and the ground blade holder 90 required for insulation can be secured without physically increasing the distance between the ground blade holder 90 and the power supply blade holders 81 and 85. And reliable insulation can be realized. Therefore, it is possible to reduce the size of the housing 20 while arranging the three-pole outlet portions 31 and 33 on different surfaces 21 and 23 of the housing 20.

Further, in the present embodiment, as shown in FIGS. 6 and 7, the first ground blade receiving portion 94 surrounded by the load insulating wall 99 is located between the pair of first power supply blade receiving portions 82 and 86. The second ground blade receiving portion 96 surrounded by the load insulating wall 99 is located between the pair of second power supply blade receiving portions 83 and 87. As described above, in the present embodiment, the load insulating wall 99 also secures the creepage distance between the first power supply blade receiving portions 82, 86 and the second power supply blade receiving portions 83, 87, so that more reliable insulation can be achieved. It will be possible.

In particular, in the present embodiment, as shown in FIGS. 1 and 3, the first outlet portion 31 and the second outlet portion 33 can be provided on the front surface 21 and the bottom surface 23 which are perpendicular to each other.

Further, in the present embodiment, the first power supply blade receiving portions 82 and 86 cover the tip portions of the inserted power plug blades 182 and 186 in the insertion direction, and the second power supply blade receiving portions 83 and 87 cover the inserted power supply. The tip of the plug blades 183 and 187 in the insertion direction is opened. As a result, the tip portions of the power plug blades 183 and 187 inserted into the second power blade receiving portions 83 and 87 are close to the power plug blades 182 and 186 inserted into the first power blade receiving portions 82 and 86. It becomes. That is, the plug 10 has a configuration in which the power plug blades 182 and 183 and the power plug blades 186 and 187 are brought close to each other to the limit. Therefore, the housing 20 of the plug 10 can be made smaller than the case where each power blade receiving portion 82, 86, 83, 87 covers the power plug blade.

Further, in the present embodiment, the first ground blade receiving portion 94 opens the tip portion of the inserted ground pin 194 in the insertion direction, and the second ground blade receiving portion 96 opens the tip portion of the inserted ground pin 196 in the insertion direction. cover. As a result, the tip portion of the ground pin 194 inserted into the first ground blade receiving portion 94 becomes close to the ground pin 196 inserted into the second ground blade receiving portion 96. That is, the plug 10 has a configuration in which the earth pins 194 and 196 are brought close to each other to the limit. Therefore, the housing 20 of the plug 10 can be made smaller than the case where the ground blade receiving portions 94 and 96 cover the ground pin.

<< Other Embodiments >>
The arrangement surface of the insertion plug 25 may be other than the back surface 24.

The outlet portions 31 and 33 may be formed on surfaces of the housing 20 that intersect each other. Therefore, the arrangement surface of each of the outlet portions 31 and 33 may be other than the front surface 21 and the bottom surface 23.

By surrounding each of the ground blade receiving portions 94 and 96 with the load insulating wall 99, it is sufficient that the creepage distance between the ground blade receiving portion and the power supply blade receiving portion can be secured at a certain distance or more. Therefore, the arrangement of the ground blade receiving portions 94, 96 and the power blade receiving portions 82, 86, 83, 87, and the shapes of the blade receivers 81, 85, 90 and the load insulating wall 99 are shown in FIGS. Not limited.

The power supply blade holders 81 and 85, the ground blade holder 90, and the load insulating wall 99 (insulating member) according to the above embodiment have realized that outlet portions 31 and 33 are provided on the surfaces 21 and 23 that intersect each other, respectively. The configuration may be realized by the outlet device 10'according to FIG. In this case, the outlet device 10'does not have an electrode plug to be inserted into the outlet, but the first outlet portion 31 and the second outlet portion 33 are provided on the surfaces intersecting each other (the front surface 21 and the bottom surface 23 orthogonal to each other in FIG. 8), respectively. Has a housing 20 provided with. As shown in FIG. 8, the housing 20 according to the outlet device 10'is preliminarily attached to the wall surface so that the back surface side is buried in the wall surface. Inside the housing 20, the above-mentioned power supply blade receivers 81 and 85, a grounding blade receiver 90, and an insulating member which is a load insulating wall 99 are arranged. Thereby, the same effect as that of the above-described embodiment can be obtained. Since the other configuration of the outlet device 10'is the same as that of the above embodiment, it is omitted.

The mounting of the outlet device 10'on the wall surface is not limited to FIG. For example, the housing 20 according to the outlet device 10'may be provided on the wall surface or the like in a state where only the front surface 21 and the bottom surface 23 are open to the outside by utilizing a step on the wall surface or the like.

The present invention is a plug provided with an electrode plug that is inserted into an outlet, and can realize miniaturization of the housing while arranging each of the three-pole outlet portions on different surfaces of the housing. Therefore, the present invention is useful as a widely applied plug.

10 Plug 20 Housing 21 Front (predetermined surface)
25a Electrode plug 31 1st outlet 33 2nd outlet 81,85 Power blade receiver 82,86 1st power blade receiver 83,87 2nd power blade receiver 90 Earth blade receiver 94 1st ground blade receiver 96 Second ground blade receiving part 99 Load insulating wall (insulating member)
182,183,186,187 Power plug blade 194,196 Earthpin

Claims (3)

A plug with an electrode plug that plugs into a commercial outlet
A housing in which a first outlet portion and a second outlet portion are provided on each of the surfaces intersecting with each other among the surfaces other than the surface on which the electrode plug is projected, and
A first power blade receiving portion that is arranged inside the housing and extends along the power plug blade that is inserted into the first outlet portion, and a power plug blade that extends along the power plug blade that is inserted into the second outlet portion. A power blade receiver having a second power blade receiver provided, and a blade receiver for power supply.
A first ground blade receiving portion that is disposed inside the housing and extends along a ground pin that is inserted into the first power blade receiving portion and the first outlet portion in the vicinity of the first power blade receiving portion. A grounding blade receiver having a second power blade receiving portion and a second ground blade receiving portion extending along a ground pin inserted into the second outlet portion in the vicinity of the second power blade receiving portion.
Inside the housing, the first ground blade receiving portion is surrounded in the extending direction of the first ground blade receiving portion, and the second ground blade receiving portion is placed around the extending direction of the second ground blade receiving portion. An insulating member arranged so as to surround the blade holder for power supply and the blade holder for grounding to secure a predetermined creepage distance .
Wherein the electrode plug in the housing is provided projecting from the surface, Bei give a <br/> a crimp terminal having a function of ground terminals,
The first power blade receiving portion covers the tip portion of the inserted power plug blade in the insertion direction.
The second power blade receiving portion opens the tip of the inserted power plug blade in the insertion direction.
The first power supply blade receiving portion and the second power supply blade receiving portion extend in different directions from each other, and the end portion of the second power supply blade receiving portion that opens the tip portion of the inserted power plug blade in the insertion direction is , Arranged close to the side of the first power blade receiving part,
The first ground blade receiving portion opens the tip portion of the inserted ground pin in the insertion direction.
The second ground blade receiving portion covers the tip portion of the inserted ground pin in the insertion direction.
The first ground blade receiving portion and the second ground blade receiving portion extend in different directions from each other, and the end portion of the first ground blade receiving portion that opens the tip portion of the inserted ground pin in the insertion direction is described as described above. Arranged close to the side of the 2nd ground blade receiving part,
The grounding blade holder further has a grounding terminal plate to which the first grounding blade receiving portion and the second grounding blade receiving portion are fixed.
The ground terminal plate is a plug that is connected to the crimp terminal and is conductive. In claim 1,
In the front view of the first outlet portion, the first ground blade receiving portion surrounded by the insulating member is located between the pair of the first power supply blade receiving portions.
A plug characterized in that, in a front view of the second outlet portion, the second ground blade receiving portion surrounded by the insulating member is located between a pair of the second power supply blade receiving portions. In claim 1 or 2,
The plug is characterized in that the first outlet portion and the second outlet portion are provided on a surface of the housing that is perpendicular to each other.

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