JP2017199471A - plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize compaction of housing, while arranging a three pole outlet on the difference face of the housing.SOLUTION: Outlets 31, 33 are provided on respective faces 21, 23 of a housing 20. Power supply blade receivers 81, 85 have first power supply blade receivers 82, 86 and second power supply blade receivers 83, 87, and an earth blade receiver 90 has a first earth blade receiver 94 extended along the first power supply blade receivers 82, 86 in the vicinity thereof, and a second earth blade receiver 96 extended along the second power supply blade receivers 83, 87 in the vicinity thereof. A load insulation wall 99 surrounds the extension direction of each earth blade receiver 94, 96, and ensures a predetermined creepage distance of insulation for the power supply blade receivers 81, 85 and earth blade receiver 90.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a plug provided with an electrode plug to be plugged into an outlet.

  Various electric devices are used as load devices in construction sites and buildings. In a load device, since a leakage may occur for some reason, 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 a leakage occurs in the load device, the plug is detected instantaneously to cut off the power supply to the load device.

  In recent years, there are increasing cases in which a plurality of load devices that need to be grounded are used in one environment. Therefore, it is desirable to provide a plurality of three-pole outlet portions for electrically connecting the load devices to the plug of Patent Document 1, as shown in Patent Document 2, for example.

JP 2001-351501 A JP 2007-173124 A

  The plug according to Patent Document 1 is used by directly plugging into an outlet of a commercial power supply, and is desirably as compact as possible. However, as shown in Patent Document 2, when the three-pole outlet portions are arranged in a line, the casing of the plug inevitably becomes longer in the arranged direction.

  On the other hand, it is also conceivable to provide tripolar outlet portions 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 portion is simply arranged on a different surface of the casing, the size of the casing may inevitably increase.

  In view of the above points, an object of the present invention is to provide a plug that can reduce the size of the housing while arranging the three-pole outlet portions on different surfaces of the housing.

  The plug according to one aspect of the present invention is a plug including an electrode plug to be inserted into a commercial outlet, and the first outlet portion is provided on each of the surfaces intersecting each other among the surfaces other than the surface on which the electrode plug protrudes. And 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 A power supply blade receiver having a second power supply blade receiving portion extending along a power plug blade inserted into the outlet portion, and disposed in the housing, in the vicinity of the first power supply blade receiving portion A first ground blade receiving portion extending along a ground pin inserted into the first power blade receiving portion and the first outlet portion; and the second power blade receiving portion and the second power blade receiving portion in the vicinity of the second power blade receiving portion. Difference to the second outlet A grounding blade receiver extending along the ground pin to be inserted, and the first grounding blade around the extending direction of the first grounding blade receiving portion in the housing A predetermined creepage surface between the power supply blade receiver and the ground blade receiver, which is disposed so as to surround the second ground blade receiver portion around the extending direction of the second ground blade receiver portion. And an insulating member for securing the distance.

  Here, the power blade receiver has a first power blade receiver and a second power blade receiver, and the ground blade receiver has a first ground blade receiver and a second ground blade receiver. Of these, the first outlet portion is composed of a first power blade receiving portion and a first ground blade receiving portion, and the second outlet portion is composed of a second power blade receiving portion and a second ground blade receiving portion. The With this configuration, it is possible to realize a configuration in which each of the three-pole outlet portions is disposed on each of the surfaces intersecting each other. In particular, the insulation member surrounding the earth blade holder allows the creepage distance between the power blade holder and the earth blade holder, which is necessary for insulation, to be increased without physically separating the distance between the earth blade holder and the power blade holder. It is secured. Thereby, reliable insulation is realizable. 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 a front view of the first outlet portion, the first ground blade receiving portion surrounded by the insulating member is located between the pair of first power blade receiving portions, and the second outlet portion In the front view, the second ground blade receiving portion surrounded by the insulating member may be located between the pair of second power blade receiving portions.

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

  The first outlet portion and the second outlet portion may be provided on surfaces that are perpendicular to each other among the surfaces of the housing.

  Thus, a 1st outlet part and a 2nd outlet part can be arrange | positioned on the surface which mutually becomes a right angle.

  Further, the first power blade receiving portion covers the insertion direction distal end portion of the inserted power plug blade, and the second power blade receiving portion opens the insertion direction distal end portion of the inserted power plug blade. Also good.

  Thereby, the front-end | tip part of the power plug blade inserted in the 2nd power blade receiving part becomes a form which adjoins the power plug blade inserted in the 1st power blade receiving part. That is, the plug is configured to bring the power plug blades closer to the limit. Therefore, the housing of the plug can be made smaller than when both the power blade receiving parts are configured to cover the power plug blade.

  The first ground blade receiving portion may open a distal end portion of the inserted earth pin in the insertion direction, and the second earth blade receiving portion may cover the distal end portion of the inserted earth pin in the insertion direction.

  As a result, the tip of the ground pin inserted into the first ground blade receiving portion comes close to the ground pin inserted into the second ground blade receiving portion. That is, the plug is configured to bring the ground pins close to the limit. Therefore, the housing of the plug can be made smaller than when both the earth blade receiving portions are configured to cover the earth 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 the perspective view which looked at the plug of the state which divided | segmented the housing | casing into two from the diagonally left upper side. It is the figure which decomposed | disassembled the component regarding a 1st outlet part and a 2nd outlet part while showing the structure inside a housing | casing. FIG. 4 is an exploded view of components of the ground terminal plate according to FIG. 3. It is the perspective view which looked at the assembly of the components regarding the 1st outlet part and 2nd outlet part which concern on FIG. 3 from the diagonally right upper side. FIG. 6 is a top view of the assembly of FIG. 5. It is a front view of the assembly of FIG. It is an external view of the outlet socket concerning other embodiments.

  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 uses.

<Embodiment>
(Outline of the plug)
The plug 10 according to the present embodiment electrically connects an outlet (commercial outlet) installed at a construction site or a building and a load device, and immediately detects this when a leakage occurs in the load device. This is a leakage detection 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 both when the outlet is a three-pole outlet with a ground pin insertion hole and when the outlet is a two-pole outlet without a ground pin insertion hole.

  Hereinafter, in a state where the plug 10 is inserted into the 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 “back”. The directions of “up”, “down”, “left”, and “right” are defined based on the state where the plug 10 is inserted into the outlet.

  As shown in FIGS. 1 and 2, the power supply display unit 21a, the pole number display unit 21b, and the commercial power are supplied to the load device on the front surface 21 of the housing 20 of the plug 10 from top to bottom. An ON button 21c for turning on and a test button 21d for checking whether the plug 10 operates normally (that is, whether the supply of commercial power to the load device is interrupted when a leakage occurs) are provided. . In FIG. 1, the case where the power supply display part 21a is located in the left side 28L side rather than the pole number display part 21b is illustrated.

  Furthermore, the lower part of the front surface 21 of the housing | casing 20 and the bottom face 23 are provided with the three-pole outlet parts 31 and 33 used as the connection port with the said load apparatus one each. On the back surface 24 of the housing 20, an insertion plug 25 for being inserted into the outlet is provided. In other words, the plug 10 has the front surface 21 of the housing 20 as the front side, the plug 25 is inserted into the outlet, and the plug of the load device is inserted into the three-pole outlet portions 31 and 33, so that the outlet and the load are connected. Connect the device electrically.

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

  In such a plug 10, when the ON button 21c is pressed and the plug 25 is inserted into the outlet, the power display 21a is turned on. That is, the power supply display unit 21a is for displaying an energized state, and the power supply display unit 21a is turned on when it becomes possible to energize between the outlet and the load device through the plug 10. Thereby, the user who uses the plug 10 can grasp that the commercial power is normally conducted. In the state where the outlet and the load device are electrically connected, when an overcurrent or a leakage occurs on the load device side, the supply of commercial power to the load device is cut off in the plug 10 and turned on. The button 21c protrudes from the pressed state to the front side, and the power display unit 21a is turned off. Thereby, the user can grasp | ascertain that overcurrent or electric leakage occurred.

  When the test button 21d is pressed, a ground fault state is created in the housing 20 in a pseudo manner, and power is supplied to the three-pole outlet units 31 and 33. Also in this case, the power display unit 21a is turned off. Thereby, the user can grasp that the plug 10 is operating normally (the test has been performed normally).

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

  Further, when the plug 10 is inserted into the outlet, the plug 10 of the plug 10 needs to have two poles if the outlet is for two poles, and the plug 25 needs to have three poles if the outlet is for three poles. The release button 28a is used to prevent the plug 25 to be inserted from being in a two-pole state despite the fact that the outlet is for three poles. 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 always protrude from the back surface 24. The ground plug 25b is locked in the housing 20 when the release button 28a is not pressed, and protrudes from the back surface 24 substantially in parallel with the two electrode plugs 25a. When the release button 28a is pressed, the ground plug 25b is unlocked, and the ground plug 25b can be stored in the housing 20.

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

  On the other hand, when inserting the plug 10 into the two-pole outlet, the user inserts the plug 10 into the two-pole outlet while continuing to press the release button 28a. At this time, the end of the unlocked ground plug 25b eventually comes into contact with the surface of the two-pole outlet. In addition, as the plug 10 is inserted into the two-pole outlet, a force is applied to the ground plug 25b in a direction opposite to the insertion direction into the two-pole outlet, and the ground plug 25b is housed in the housing 20. The At this time, the pole number display portion 21b displays a color indicating that the plug 25 is in a two-pole state.

  When the plug 10 inserted into 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 pole number display portion 21b displays a color indicating that the plug 25 is in a three-pole state.

(Detailed configuration regarding the outlet)
Hereinafter, the structure regarding the outlet parts 31 and 33 is demonstrated using FIGS.

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

-Case-
The housing 20 has a hollow shape elongated in the vertical direction (X direction) in FIGS. 1 and 2.

  Specifically, the housing 20 is separable into two members in the Z direction at the center portion in the Z direction in 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 arranged at positions corresponding to the engaging claws provided at the end of the left side surface 28L of the front cover 20a with the openings facing each other. The provided engaging recess of the rear 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). Thereby, the housing | casing 20 will be in the state shown in FIG. 1, and closed space is formed in the housing | casing 20. FIG.

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

  The front cover 20 a is provided with the display portions 21 a and 21 b and the buttons 21 c, 21 d, and 28 a that are exposed to the outside of the plug 10. On the front surface 21 of the front cover 20a, a button cap and a nameplate are placed in order. 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 nameplate is a flat plate describing what each of the display portions 21a, 21b and each of the buttons 21c, 21d is. The nameplate covers substantially the entire front surface 21 from above the button cap, with the surface on which these symbols are written as the front side.

  In particular, at the lower portion of the front surface 21 of the front cover 20a, one three-pole insertion port is provided as a first outlet portion 31, and on the bottom surface 23 substantially perpendicular to the front surface 21, one three-pole insertion port is a second outlet. The unit 33 is provided. 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 projecting surface (back surface 24) of the plug 25. The first outlet portion 31 and the second outlet portion 33 are located closer to the bottom surface 23 than the partition plate 20ba of the rear cover 20b when the front cover 20a is fixed to the rear cover 20b in the state shown in FIG. It can be said.

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

  Further, in the inside of the housing 20, portions corresponding to the first outlet portion 31 and the second outlet portion 33 include a ground blade receiver 90, a load insulating wall 99 (corresponding to an insulating member), a power blade receiver 81, 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 outlet portions 31 and 33, the power blade receivers 81 and 85 are connected to the power plug blades 182, 186, 183 of the plugs 170 and 180, respectively. It is for sandwiching 187, and is formed of a relatively conductive metal (copper or the like). In FIG. 3, a power blade receiver 81 is disposed on the right side 28 </ b> R side of the housing 20, and a power blade receiver 85 is disposed on the left side 28 </ b> L side of the housing 20. The power blade receiver 81 and the power blade receiver 85 are symmetrical with respect to a broken line L1 extending in the X direction according to FIG.

  Specifically, the power blade receiver 81 includes a first power blade receiver 82 and a second power blade receiver 83, and the power blade receiver 85 includes a first power blade receiver 86 and a second power blade receiver. 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 is The power plug 170 extends in the Z direction along the power plug blade 186. As a result, the first power blade receiving portions 82 and 86 of the power blade receivers 81 and 85 sandwich and fix the two 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 is connected to the power plug 180. It extends in the X direction along the plug blade 187. Accordingly, the second power blade receiving portions 83 and 87 of the power blade receivers 81 and 85 sandwich and fix the two 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 receiver 81 are integrally formed of one plate-like metal, and are shown in FIGS. As shown in FIG. 5, when viewed from the bottom surface 23 side of the housing 20, all the Z-direction cross sections are U-shaped at the same height portion. That is, the first power blade receiving portion 82 is convex on the insertion direction side of the power plug blade 182, but the second power blade receiving portion 83 is not on the insertion direction side of the power plug blade 183 but in the insertion direction. On the other hand, it is convex in the vertical direction. The width in the Z direction of the first power blade receiving portion 82 is longer than the width in the Z direction of the second power blade receiving portion 83, but the width in the X direction of the first power blade receiving portion 82 is the second power blade receiving portion 82. The width of the portion 83 is shorter than the width in the X direction. The lengths of the respective widths are determined in accordance with the extended lengths of the power plug blades 182 and 183 to be clamped and fixed in the first power blade receiving portion 82 and the second power blade receiving portion 83 having different insertion directions. ing. In each of the first power blade receiving portion 82 and the second power blade receiving portion 83, the front end portion on the front surface 21 side of the first power blade receiving portion 82 and the front end portion on the bottom surface 23 side of the second power blade receiving portion 83 are The body 20 is expanded outward.

  With the above configuration, when the power plugs 170 and 180 are inserted into the outlet portions 31 and 33, the first power blade receiving portion 82 covers the distal end portion of the power plug blade 182 in the insertion direction. 83 opens the front-end | tip part of the insertion direction of the power plug blade 183. FIG. 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 close to the limit. As a result, the housing 20 can be reduced in size as compared with the case where both the first power blade receiving portion 82 and the second power blade receiving portion 83 cover the front end portions in the insertion direction of both power plug blades 182 and 183. ing.

  Note that the first power supply blade receiving portion 86 and the second power supply blade receiving portion 87 of the power supply blade receiver 85 are the same as those described above, and thus the description thereof is omitted.

  In addition, as shown in FIG. 3, the power supply blade receivers 81 and 85 are formed with recesses 81 a and 85 a on the back surface 24 side in portions extending in the X direction from the first power supply blade receivers 82 and 86. Yes. The recesses 81a and 85a are engaged with grooves formed in the partition plate 20ba, so that the power blade receivers 81 and 85 are fixed to the rear cover 20b.

-Blade holder for ground-
The ground blade receiver 90 is for holding 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 outlet portions 31 and 33, respectively. Therefore, it is formed of a metal (copper or the like) having relatively good conductivity. The ground blade receiver 90 has a ground terminal plate 91, a first ground blade receiver 94 and a second ground blade receiver 96 shown in FIG. 4, and these are combined as shown in FIG. Yes.

  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 by being bent stepwise in the Z direction. Have. The flat plate portion 92 is formed with three through holes 92a, 92b, and 92c spaced 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 protrusion 93 has a shape extending from the base toward the tip in the order of the Z direction, the XY direction, and the Z direction. One through hole 93a and 93b is 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 93 a and 93 b are holes for inserting the copper rods 95 and 97. The first ground blade receiving portion 94 is fixed to the protruding tip portion extending in the Z direction from the XY direction by the copper rod 95, and the second ground blade receiving portion 96 is fixed to the portion extending in the XY direction by the copper rod 97. The

  The ground terminal plate 91 is connected to and electrically connected to the crimp terminal 26 associated with the back surface 24 of the housing 20. Thereby, the crimp terminal 26 can function as a ground terminal.

  The first ground blade receiving portion 94 clamps and fixes the ground pin 194 (see FIG. 5) of the power plug 170 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 and 86 and the ground pin 194 in the vicinity of the first power blade receiving portions 82 and 86. Yes. Specifically, as shown in FIG. 4, the first ground blade receiving portion 94 protrudes along the Z direction and is spaced apart from each other by a predetermined distance in the Y direction, and the protruding portion. 94a, 94b, and a connecting portion 94c that connects the protruding portions 94a, 94b. The predetermined distance is about the diameter of the ground pin 194 to be inserted, and the projecting lengths of the projecting portions 94a and 94b are determined in accordance with the extended length of the ground pin 194. The front end portions of the protrusions 94 a and 94 b on the front surface 21 side are expanded toward the outside of the housing 20. Although not shown, a through hole for the copper rod 95 is formed in the connecting portion 94c.

  The second ground blade receiving portion 96 clamps 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 and 87 and the ground pin 196 in the vicinity of the second power blade receiving portions 83 and 87. Yes. Specifically, as shown in FIG. 4, the second ground blade receiving portion 96 protrudes along the X direction and has a pair of protruding portions 96 a and 96 b positioned at a predetermined distance from each other in the Y direction, and the protruding portion. 96a, 96b, and a connecting portion 96c that is integrally formed with the protruding portions 96a, 96b. The predetermined distance is about the diameter of the ground pin 196 to be inserted, and the projecting lengths of the projecting portions 96a and 96b are determined in accordance with the extended length of the ground pin 196. The tips of the protrusions 96 a and 96 b on the bottom surface 23 side are expanded toward the outside of the housing 20. A through hole 96ca for the copper rod 97 is formed in the connecting portion 96c.

  When the above-described ground terminal plate 91, first ground blade receiving portion 94, and second ground blade receiving portion 96 are assembled, the shape of the ground blade receiver 90 shown in FIG. 3 is obtained. Thereby, when each power plug 170,180 is inserted in each outlet part 31,33, the 2nd earth blade receiving part 96 covers the insertion direction tip part of earth pin 196, but the 1st earth blade receiving part 94 is The tip of the earth spin 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 so as to be close to the limit. Thereby, compared with the case where both the 1st earth blade receiving part 94 and the 2nd earth blade receiving part 96 cover the front-end | tip part of the insertion direction of both the earthing pins 194 and 196, size reduction of the housing | casing 20 is realizable. .

−Load insulation wall−
The load insulating wall 99 is a component that insulates the power blade receivers 81 and 85 from the ground blade receiver 90. The load insulating wall 99 has a bottom 99a, a first enclosure 99b, and a second enclosure 99c, which are integrally formed of 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 portions corresponding to the screws 98a, 98b, and 98c. The portions of the bottom 99a corresponding to the screws 98a and 98c bulge in accordance with the shapes 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 surrounding portion 99 b 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 surrounding portion 99 b is a cylindrical member that is approximately rectangular when viewed from the Z direction (front 21 side), and is the base of the first ground blade receiving portion 94. Extends in the Z direction from the tip to the vicinity of the tip.

  As shown in FIG. 5, the second surrounding portion 99 c 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 surrounding portion 99 c has a substantially U-shape that is convex upward when viewed from the X direction (the bottom surface 23 side), and the second ground blade receiving portion 96. It extends in the X direction from the root of the base to the vicinity of the tip. Precisely, by attaching the load insulating part 99 to the rear cover 20b, the second earth blade receiving part 96 is surrounded around the extending direction by the second surrounding part 99c and the rear cover 20b.

  The first enclosure portion 99b and the second enclosure portion 99c ensure a predetermined creepage distance between the power 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 each of the first power supply blade receiving portions 82 and 86 is defined by the distance along the wall of the first surrounding portion 99b. The creeping distances with the power blade receiving portions 83 and 87 are defined by the distance along the wall of the second surrounding 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, respectively. I can earn.

  And when it sees from the front view of the 1st outlet part 31, ie, the front 21 side of case 20, as shown in Drawing 6, the 1st earth blade receiving part 94 surrounded by the 1st enclosure part 99b is: In the Y direction, it is located between the pair of first power blade receiving portions 82 and 86. When viewed from the front of the second outlet portion 33, that is, when viewed 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 surrounding portion 99c and the rear cover 20b. Is located between the pair of second power supply blade receiving portions 83 and 87 in the Y direction. With this arrangement, not only the creepage distance between each ground blade receiving portion 94, 96 and each power blade receiving portion 82, 83, 86, 87, but also the creepage distance between the first power blade receiving portions 82, 86 and the second power source. The creepage distance between the blade receiving portions 83 and 87 can also earn a distance necessary for insulation. Therefore, in this embodiment, it can be said that stronger insulation is ensured.

  In addition, the thickness of the bottom part 99a, the 1st enclosure part 99b, and the 2nd enclosure part 99c may be substantially the same, and may differ according to a part.

(effect)
In this embodiment, as shown in FIGS. 3 and 5, each of the power blade receivers 81 and 85 includes first power blade receivers 82 and 86 and second power blade receivers 83 and 87, and is used for grounding. The blade receiver 90 has a first ground blade receiver 94 and a second ground blade receiver 96. Among these, the 1st outlet part 31 is comprised by the 1st power blade receiving part 82,86 and the 1st earth blade receiving part 94 which become a pair, and the 2nd outlet part 33 is the 2nd power blade receiving part which becomes a pair. The parts 83 and 87 and the second earth blade receiving part 96 are configured. 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 each other.

  In particular, each of the first ground blade receiving portion 94 and the second ground blade receiving portion 96 is surrounded by the first surrounding portion 99b and the second surrounding portion 99c of the load insulating wall 99, respectively. As a result, the creepage distance between the power supply blade receivers 81 and 85 and the ground blade receiver 90 necessary for insulation can be ensured without physically opening the distance between the ground blade receiver 90 and the power supply blade receivers 81 and 85. And reliable insulation can be realized. Accordingly, the housing 20 can be downsized while the three-pole outlet portions 31 and 33 are arranged on the different surfaces 21 and 23 of the housing 20.

  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 positioned between the pair of first power 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 blade receiving portions 83 and 87. Thus, in this embodiment, since the creepage distance between the first power supply blade receiving portions 82 and 86 and the second power supply blade receiving portions 83 and 87 is secured by the load insulating wall 99, more reliable insulation is achieved. It becomes 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 that are perpendicular to each other.

  Further, in the present embodiment, the first power blade receiving portions 82 and 86 cover the distal end portions in the insertion direction of the inserted power plug blades 182 and 186, and the second power blade receiving portions 83 and 87 are inserted power supplies. The front ends of the plug blades 183 and 187 in the insertion direction are opened. Thereby, 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 is configured to bring the power plug blades 182 and 183 and the power plug blades 186 and 187 closer to the limit. Therefore, the housing 20 of the plug 10 can be made smaller than when the power blade receiving portions 82, 86, 83, 87 are configured to cover the power plug blade.

  Further, in the present embodiment, the first ground blade receiving portion 94 opens the tip end portion of the inserted earth pin 194 in the insertion direction, and the second earth blade receiving portion 96 sets the tip end portion of the inserted earth 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 comes close to the ground pin 196 inserted into the second ground blade receiving portion 96. That is, the plug 10 is configured to bring the ground pins 194 and 196 close to the limit. Therefore, the housing 20 of the plug 10 can be made smaller than when the ground blade receiving portions 94 and 96 are configured to cover the ground pin.

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

  Each outlet part 31 and 33 should just be formed in the surface which mutually cross | intersects the housing | casing 20. FIG. Therefore, the surface on which the outlet portions 31 and 33 are disposed may be other than the front surface 21 and the bottom surface 23.

  It is only necessary that the creeping distance between the ground blade receiving portion and the power blade receiving portion can be secured by a certain distance or more by enclosing each ground blade receiving portion 94, 96 with the load insulating wall 99. Accordingly, the arrangement of the ground blade receiving portions 94 and 96 and the power blade receiving portions 82, 86, 83, and 87 and the shapes of the blade receiving portions 81, 85, 90 and the load insulating wall 99 are shown in FIGS. It is not limited.

  The power supply blade receivers 81 and 85, the ground blade receiver 90, and the load insulating wall 99 (insulating member) according to the above embodiment realize that the outlet portions 31 and 33 are provided on the surfaces 21 and 23 that intersect each other. The configuration may be realized by an outlet device 10 ′ according to FIG. In this case, the outlet device 10 ′ does not include an electrode plug that is inserted into the outlet, but the first outlet portion 31 and the second outlet portion 33 are respectively provided on the intersecting surfaces (the front surface 21 and the bottom surface 23 orthogonal to each other in FIG. 8). The housing 20 is provided. As shown in FIG. 8, the casing 20 according to the outlet device 10 ′ is attached to the wall surface in advance so that the back side is buried in the wall surface. Inside the housing 20, the power supply blade receivers 81 and 85, the ground blade receiver 90, and the insulating member that is the load insulating wall 99 are disposed. Thereby, there can exist an effect similar to the said embodiment. The other configuration of the outlet device 10 ′ is the same as that of the above embodiment, and is omitted.

  In addition, the attachment to the wall surface of outlet device 10 'is not limited to FIG. For example, the casing 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 opened to the outside using a step such as a wall surface.

  The present invention is a plug provided with an electrode plug that is plugged into an outlet, and is a plug that can realize downsizing of the casing while arranging each of the three-pole outlet portions on different surfaces of the casing. 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 part 33 2nd outlet part 81,85 Power supply blade receptacles 82,86 1st power supply blade receptacle parts 83,87 2nd power supply blade receptacle part 90 Grounding blade receptacle 94 1st earthing blade receptacle part 96 Second earth blade receiving portion 99 Load insulating wall (insulating member)
182,183,186,187 Power plug blade 194,196 Earthpin

Claims (5)

A plug with an electrode plug to be plugged into a commercial outlet,
Of the surfaces other than the surface on which the electrode plug protrudes, a housing provided with a first outlet portion and a second outlet portion on each of the surfaces intersecting each other;
A first power blade receiving portion that is disposed inside the housing and extends along a power plug blade that is inserted into the first outlet portion, and extends along a power plug blade that is inserted into the second outlet portion. A power supply blade receiver having a second power supply blade receiver provided;
A first ground blade receiving portion disposed within the housing and extending along a ground pin inserted into the first power blade receiving portion and the first outlet portion in the vicinity of the first power blade receiving portion; A ground blade receiver having a second ground blade receiving portion extending along a ground pin inserted into the second power blade receiving portion and 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 around the extending direction of the first ground blade receiving portion, and the second ground blade receiving portion is disposed around the extending direction of the second ground blade receiving portion. A plug comprising: an insulating member disposed so as to enclose and securing a predetermined creepage distance between the power blade holder and the ground blade receiver. 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 first power blade receiving portions,
In the front view of the second outlet portion, the second earth blade receiving portion surrounded by the insulating member is located between the pair of second power blade receiving portions. In claim 1 or claim 2,
The plug, wherein the first outlet portion and the second outlet portion are provided on surfaces of the casing that are perpendicular to each other. In any one of Claims 1-3,
The first power blade receiving portion covers the insertion direction tip of the inserted power plug blade,
The plug, wherein the second power blade receiving portion opens a distal end portion in the insertion direction of the inserted power plug blade. In any one of Claims 1-4,
The first ground blade receiving portion opens the tip of the inserted ground pin in the insertion direction,
The second earth blade receiving portion covers a tip end portion of the inserted earth pin in the insertion direction.

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