JP6653449B2 - Outlet - Google Patents

Description

  The present invention generally relates to an outlet, and more particularly, to an outlet including a blade receiving member electrically connected to a plug blade inserted through an insertion hole of a case.

  2. Description of the Related Art Conventionally, as an outlet provided on an outdoor wall surface of a house, an outlet having an outlet main body provided with an insertion hole into which a plug blade of a plug is inserted is known (for example, see Patent Document 1). In the outlet described in Patent Literature 1, an outlet main body is provided with an outlet block that supplies power to a plug and a body that houses the outlet block. The outlet body is fixed to a mounting frame arranged on a wall surface.

  The outlet described in Patent Literature 1 includes a pair of blade receiving members (power terminal plate) and a ground member (ground terminal plate). This outlet can be connected to a plug having a pair of blades (a first power blade and a second power blade) and a ground blade (a ground blade).

JP 2011-198745 A

  However, in the outlet described in Patent Literature 1, when the plug is connected, the blade may contact the blade receiving member after the grounding blade is held by the grounding member. Therefore, despite the insufficient contact between the blade and the blade receiving member such as a so-called point contact state, the plug is connected to the outlet by the grounding blade being held by the grounding member. May be maintained. Therefore, the outlet described above may be used in a state where the contact between the plug blade and the blade receiving member is insufficient.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an outlet that can reduce the possibility of being used in a state where contact between a blade and a blade receiving member is insufficient.

  An outlet according to one embodiment of the present invention includes a case, a pair of blade receiving members, and a grounding member. The case has a pair of insertion holes and a ground insertion hole formed in the connection surface. The pair of blade receiving members are housed in the case, and are electrically connected to the pair of blades inserted along the first direction from the pair of insertion holes. The grounding member is housed in the case, and is electrically connected to a grounding plug blade inserted along the first direction from the grounding insertion hole. The grounding blade has a greater amount of insertion from the connection surface than the pair of blades by a predetermined amount. Each of the pair of blade receiving members has a pair of blade receiving pieces facing each other in a second direction orthogonal to the first direction. Each of the pair of blade receiving members is configured such that the plug blade is sandwiched between the pair of blade receiving pieces at a power pole holding portion located at a first distance from the connection surface in the first direction. The grounding member has a pair of grounding pieces facing each other in a third direction orthogonal to both the first direction and the second direction. The grounding member is configured to sandwich the grounding blade between the pair of grounding pieces at a grounding pole holding portion located at a second distance from the connection surface in the first direction. The second distance is greater than a value obtained by adding the predetermined amount to the first distance. In the first direction, the distance from the pair of grounding pieces to the connection surface is obtained by adding the predetermined amount to the distance from the pair of blade receiving pieces to the connection surface in any of the pair of grounding pieces. Less than the value.

  ADVANTAGE OF THE INVENTION This invention has the advantage that the possibility that it can be used in a state where the contact between the blade and the blade receiving member is insufficient can be reduced.

FIG. 1 is a cross-sectional view showing a part of an outlet according to an embodiment of the present invention, in which a periphery of a blade receiving member is a cross section viewed from one side in a third direction, and a periphery of a grounding member is It is a figure showing the section seen from one of two directions. FIG. 2 is a perspective view showing a wiring device according to an embodiment of the present invention, with a wiring device cover removed. FIG. 3 is a perspective view of the wiring device of the above, viewed from obliquely right front. FIG. 4 is a perspective view showing the wiring device of the above, viewed from diagonally left front. FIG. 5 is an exploded perspective view showing the above wiring device, viewed obliquely from the front right. FIG. 6 is an exploded perspective view showing the above wiring device from an obliquely left rear. FIG. 7 is an exploded perspective view showing the outlet of the above, viewed from one direction. FIG. 8 is an exploded perspective view showing the outlet of the above, viewed from another direction. FIG. 9 is a partially cutaway side view showing the outlet. FIG. 10A to FIG. 10C are explanatory diagrams of the plug connection work of the outlet same as the above. FIG. 11 is an exploded perspective view showing the main part of the outlet. FIG. 12 is an exploded perspective view showing a door block of the outlet. FIG. 13A is a schematic perspective view illustrating a main part of the outlet and omitting illustrations other than an inner cover, a first case, and a blade receiving block. FIG. 13B is a schematic perspective view illustrating a main part of the outlet and omitting illustrations other than the inner cover and the blade receiving block.

(1) Outline As shown in FIGS. 2 to 4, a wiring device 10 according to the present embodiment includes a wiring device 1 and a wiring device cover 2 that covers the wiring device 1 (hereinafter, also simply referred to as a “cover”). And

  In the present embodiment, the wiring device 1 has a function of an outlet that is connected to a plug of an electric device and supplies power to the electric device. Here, as the outlet, a two-port type outlet for AC 100 V with a grounding electrode and to which two plugs can be connected at the same time is exemplified. Further, in the present embodiment, as an example of the wiring device 10, an outdoor wiring device 10 attached to an outer wall of a building is exemplified. The building in which the wiring device 10 is installed is, for example, a detached house, an apartment house, an office, a store, a nursing facility, or the like. That is, in the present embodiment, the wiring device 10 is an outlet device for outdoor use.

  The wiring device 10 is attached to a construction surface (an outer wall surface of a building) in a state where electric wires are electrically connected to the wiring device 1. In the wiring device 10, when the plug 100 (see FIG. 9) of the electric device is connected to the wiring device 1, power can be supplied from the wiring device 1 to the electric device. Here, the wiring device 10 has the connection surface 311 in which the insertion holes 312 (see FIG. 4) into which the plug blades 102A and 102B (see FIG. 9) of the plug 100 are inserted in the wiring device 1 are directed downward. Then, it is attached to the construction surface 900 (see FIG. 9). Therefore, the plug 100 is connected to the wiring device 1 from below, and it is difficult for rainwater to enter the wiring device 1 from the insertion hole 312 and the ground insertion hole 313.

  The wiring device 10 configured as described above is installed in, for example, a garage or the like, and is used for charging an electric vehicle. That is, when the plug 100 of the charging cable connected to the electric vehicle is connected to the wiring device 10, power can be supplied from the wiring device 1 to the electric vehicle via the charging cable, and charging of the electric vehicle can be performed. Becomes possible. The “electric vehicle” here is a vehicle that has a storage battery and runs using the electric energy stored in the storage battery. The electric vehicle is, for example, an electric vehicle that runs by the output of the electric motor, or a plug-in hybrid vehicle that runs by combining the output of the engine and the output of the electric motor. Further, the electric vehicle may be a senior car, a motorcycle (electric motorcycle), a tricycle, an electric bicycle, or the like. Further, the application of the wiring device 10 is not limited to charging of an electric vehicle, and the wiring device 10 may be used for supplying power to various electric devices such as a lighting device and a power tool.

  However, the wiring device 10 according to the present embodiment is an outlet device having no lock mechanism for preventing the plug 100 from coming off. For this reason, the wiring device 10 is more suitable for an application in which the plug 100 is frequently inserted and removed, such as an electric vehicle, than an electric device used with the plug 100 connected for a long time, such as a water heater. .

(2) Overall Configuration Hereinafter, the overall configuration of the wiring device 10 according to the present embodiment will be described in detail.

  In the present embodiment, a direction perpendicular (orthogonal) to the horizontal plane in a state where the wiring device 10 is attached to the outer wall surface of the building, which is the construction surface 900, is referred to as a “vertical direction”, and the wiring device 10 is The lower side (vertical direction) when viewed from the front will be described as “downward”. In addition, a direction orthogonal to the up-down direction and parallel to the construction surface 900 is referred to as a “left-right direction”, a right side as viewed from the front of the wiring device 10 is referred to as a “right side”, and a left side as a “left side”. Further, a direction orthogonal to both the up-down direction and the left-right direction, that is, a direction orthogonal to the construction surface 900 is referred to as a “front-rear direction”, and the wiring device 10 side as viewed from the construction surface 900 is referred to as a “front”. Arrows indicating “vertical direction”, “horizontal direction”, and “front-back direction” in the drawings are merely described for explanation, and have no substance.

  However, these directions are not intended to limit the directions in which the wiring device 10 is used. For example, when the wiring device 10 is attached to a floor surface instead of a wall surface, the “front-back direction” is a direction perpendicular to the horizontal plane, and the “up-down direction” and “left-right direction” are directions parallel to the horizontal plane. . In addition, even when the wiring device 10 is mounted on a wall surface, the “left-right direction” is set by mounting the wiring device 10 on the wall surface in a direction in which the “vertical direction” is parallel to the horizontal plane (that is, the horizontal direction). The direction is perpendicular to the horizontal plane.

(2.1) Configuration of Wiring Device First, the configuration of the wiring device 1 will be described with reference to FIGS. The wiring device 1 includes an outlet 3, a body 4 that holds the outlet 3, and a waterproof plate 5 attached to a rear surface of the body 4.

  The outlet 3 has a case 30 and built-in components such as blade receiving members 14A and 14B (see FIG. 7) housed in the case 30. The case 30 is configured by combining three members of an inner cover 31, a first case 32, and a second case 33. The case 30 is made of, for example, urea resin. The first case 32 and the second case 33 are combined and integrated in the front-rear direction so that the rear surface of the first case 32 is covered with the second case 33. The first case 32 and the second case 33 are combined with each other to form a box-shaped inner body having an opening on a lower surface. The inner cover 31 is combined with the first case 32 and the second case 33 so as to close an opening on the lower surface of the inner body (the first case 32 and the second case 33). The lower surface of the inner cover 31 forms a connection surface 311. The connection surface 311 is formed with an insertion hole 312 and a ground insertion hole 313 into which the blades 102A and 102B of the plug 100 and the ground blade 102C (see FIG. 9) are inserted. The internal configuration of the outlet 3 will be described in detail in the section of “(3) Details of outlet”.

  The outlet 3 has a terminal portion 180 (see FIG. 7) for connecting an electric wire. Here, the terminal portion 180 is an electric wire insertion type quick connection terminal to which the electric wire is connected by inserting the electric wire through a terminal hole 34 formed on the rear surface of the case 30 (the second case 33). In the present embodiment, a total of three electric wires of a pair of a power supply line and a ground line (earth line) are connected to the outlet 3. Further, the terminal section 180 has a feed terminal for feed wiring, and up to six electric wires can be connected. A release operation hole 341 for inserting a jig such as a driver is formed on the rear surface of the case 30 beside the terminal hole 34. By inserting a jig such as a screwdriver through the release operation hole 341, the holding state of the electric wire in the terminal portion 180 is released.

  In addition, the outlet 3 has an extension terminal plate 35 that forms a screw-type terminal for connecting a ground wire of an electric device. The extension terminal plate 35 is made of a conductive metal plate, and is formed in a vertically long strip shape. The upper end of the extension terminal plate 35 is inserted from the rear surface of the case 30 (the second case 33), so as to be electrically connected to the ground electrode of the terminal portion 180 in the outlet 3. The lower end of the extension terminal plate 35 is fixed to the rear surface of the body 4 by a pair of holding screws 36.

  The body 4 includes a rectangular frame 41 that is long in the vertical direction, and a storage portion 42 that projects forward from the front surface of the frame 41. The body 4 is made of, for example, ASA (Acrylate Styrene Acrylonitrile) resin. A ground terminal hole 411 is formed at a lower end of the frame body 41 at a position corresponding to a lower end of the extension terminal plate 35. The terminal screw 37 is fastened to the extension terminal plate 35 from the front surface of the frame 41 through the ground terminal hole 411, so that the extension terminal plate 35 and the terminal screw 37 constitute a ground terminal. That is, the ground wire of the electric device can be electrically connected to the extension terminal plate 35.

  The front surface of the storage portion 42 is not parallel to the front surface of the frame body 41 but is inclined obliquely upward. As a result, the amount of protrusion of the storage section 42 from the front surface of the frame 41 increases in the vertical direction as it approaches the lower end edge of the storage section 42. In the present embodiment, the front surface of the storage section 42 is not a flat surface but a curved surface that is curved so as to protrude obliquely upward. The inside of the storage section 42 is hollow. A first opening 421 is formed on a lower surface of the storage section 42, and a second opening 422 is formed on a rear surface of the storage section 42.

  The outlet 3 is stored in the internal space of the storage section 42. A pair of mounting pieces 331 for passing the fixing screw 81 protrude from both left and right sides of the second case 33. The outlet 3 is fixed to the body 4 by fixing screws 81. With the outlet 3 fixed to the body 4, the lower surface (connection surface 311) of the outlet 3 is exposed from the first opening 421 of the storage section 42. In other words, the body 4 holds the outlet 3 with the connection surface 311 of the outlet 3 exposed.

  In the present embodiment, the outlet 3 is held by the body 4 in a state of being inclined with respect to the vertical direction such that the connection surface 311 exposed from the first opening 421 faces slightly forward from below (directly below) in the vertical direction. Have been. Here, the outlet 3 is held by the body 4 in a state where the entire case 30 is inclined so that not only the connection surface 311 but also the rear surface of the first case 32 and the front surface of the second case 33 are inclined with respect to the vertical direction. ing. Thus, the insertion direction of the blades 102A and 102B and the grounding blade 102C of the plug 100 connected to the wiring device 1 is a direction slightly inclined with respect to the vertical direction. That is, the plug 100 is connected to the connection surface 311 not diagonally downward (directly below) but diagonally forward.

  The waterproof plate 5 is disposed so as to be sandwiched between the rear surface of the body 4 and the construction surface 900 (wall surface), and prevents infiltration of rainwater from the second opening 422 on the rear surface of the body 4. The waterproof plate 5 is formed in a rectangular plate shape one size smaller than the frame 41 of the body 4. The waterproof plate 5 is made of, for example, a soft vinyl chloride resin. A groove 51 is formed in the outer peripheral portion of the front surface of the waterproof plate 5 along substantially the entire periphery except the lower portion. By fitting the rib 412 formed on the rear surface of the frame 41 into the groove 51, it is possible to prevent rainwater from entering the space between the waterproof plate 5 and the body 4. Further, a rib 52 is formed on the outer peripheral portion of the rear surface of the waterproof plate 5 along substantially the entire periphery. The ribs 52 prevent rainwater from entering the space between the waterproof plate 5 and the construction surface 900. In the waterproof plate 5, a communication hole 54 for communication is formed at a position corresponding to the second opening 422.

  Here, a pair of mounting holes 413 for passing mounting screws are formed in the frame body 41. In the waterproof plate 5, a pair of mounting holes 53 for passing mounting screws are formed at positions corresponding to the pair of mounting holes 413. Further, on the front surface of the frame body 41, a decorative plate 82 for covering the lower mounting hole 413 of the pair of mounting holes 413 is mounted. The decorative plate 82 is detachably attached to the front surface of the body 4. A peripheral groove 414 for attaching the cover 2 is formed on the front surface of the frame body 41 along the outer peripheral edge of the storage section 42.

  With the above-described configuration, in the wiring device 1, the body 4 and the waterproof plate 5 are attached to the construction surface 900 by a pair of attachment screws in a state where the outlet 3, the body 4, and the waterproof plate 5 are combined. At this time, the electric wire drawn from the construction surface 900 is introduced into the internal space of the storage unit 42 through the communication hole 54 and the second opening 422, and is connected to the terminal portion 180 of the outlet 3 in the storage unit 42. . After the wiring device 1 is attached to the construction surface 900, the decorative plate 82 is attached to the body 4 so that the lower mounting screw of the pair of mounting screws is covered by the decorative plate 82. When the cover 2 is attached to the wiring device 1, the upper mounting screw of the pair of mounting screws is covered by the cover 2.

(2.2) Configuration of Wiring Instrument Cover Next, the configuration of the cover 2 will be described with reference to FIGS. 5 and 6. The cover 2 includes a cover body 6 and a label member 7.

  The cover body 6 is formed in a box shape so as to cover the wiring device 1. In the present embodiment, openings are formed on the rear surface and the lower surface of the cover main body 6. Specifically, the cover main body 6 has a main wall portion 60, a first side wall 61, and a second side wall 62 integrally. The main wall portion 60 covers the wiring device 1 from at least one of the front and the upper. The first side wall 61 is adjacent to the main wall portion 60 and covers the wiring device 1 from the left side. The second side wall 62 is adjacent to the main wall portion 60 and covers the wiring device 1 from the right side. In the present embodiment, the main wall portion 60 includes a front wall 601 that covers the wiring device 1 from the front, and an upper wall 602 that covers the wiring device 1 from above.

  Here, the cover main body 6 is configured not to cover the entire wiring device 1 but to cover a part of the wiring device 1. In the present embodiment, the cover main body 6 is formed in a shape that covers the storage portion 42 of the wiring device 1 in which at least the outlet 3 is stored from the front, the upper side, the left side, and the right side. In other words, even when the cover main body 6 is attached to the wiring device 1, the rear surface of the wiring device 1 and the lower surface of the storage portion 42 are not covered by the cover main body 6 and are exposed from the cover main body 6. Become.

  More specifically, the cover main body 6 is formed in a hollow rectangular parallelepiped shape having a rear surface and a lower surface that are open and long in the vertical direction. In the present embodiment, the thicknesses of the front wall 601, the upper wall 602, the first side wall 61, and the second side wall 62 are substantially the same. The front wall 601 is formed in a rectangular plate shape that is orthogonal to the front-rear direction and long in the vertical direction. The upper wall 602 is configured to protrude rearward from an upper edge of the front wall 601. The upper wall 602 is formed in a rectangular plate shape that is long in the left-right direction. The first side wall 61 is configured to protrude rearward from the left edge of the front wall 601. The second side wall 62 is configured to protrude rearward from the right edge of the front wall 601. The left edge of the upper wall 602 is connected to the upper edge of the first side wall 61, and the right edge of the upper wall 602 is connected to the upper edge of the second side wall 62.

  In the present embodiment, the connecting portion between the front wall 601 and the first side wall 61 and the connecting portion between the front wall 601 and the second side wall 62 are both curved at the first radius of curvature. In addition, the connecting portion between the front wall 601 and the upper wall 602, the connecting portion between the upper wall 602 and the first side wall 61, and the connecting portion between the upper wall 602 and the second side wall 62, It is curved with a radius of curvature of 2. The first radius of curvature is larger than the second radius of curvature.

  Here, each of the first side wall 61 and the second side wall 62 is substantially orthogonal to the front wall 601. That is, each of the first side wall 61 and the second side wall 62 is substantially orthogonal to the left-right direction. However, the term “orthogonal” used in the present disclosure includes not only a state of strictly intersecting at 90 degrees but also a state of substantially orthogonality within a certain error range. On the other hand, the upper wall 602 is not parallel to the horizontal plane, but is slightly inclined diagonally forward. That is, the upper wall 602 is slightly lowered forward, and has a gradient such that rainwater does not collect on the upper surface of the cover body 6.

  Further, the rear end of each of the first side wall 61 and the second side wall 62 is formed in a shape extending below the lower end edge of the storage section 42. As a result, the vertical dimension of the cover body 6 is substantially equal to the vertical dimension of the body 4, and the wiring apparatus 10 is one-sided when viewed from the left and right sides. The bodily sensation has been enhanced.

  The cover body 6 is made of a flame-retardant resin containing a glitter pigment. The term "brilliant pigment" as used herein refers to a pigment made of, for example, metal powder (metal flake), mica, titanium oxide, glass flake, or the like, and exhibiting metallic luster or pearl-like luster. In the present embodiment, metal powder (for example, aluminum flake) is used as the glitter pigment, and the flame-retardant resin constituting the cover body 6 is colored in a metallic color. In other words, the flame-retardant resin forming the cover body 6 is a so-called original (raw material colored) resin that is colored at the raw material stage before molding by containing a glittering pigment in a base material made of a translucent resin. is there. By using this kind of soaked resin, it is possible to achieve coloring such as a metallic color on the finished product (cover body 6) even without painting (without painting). The base of the flame-retardant resin is, for example, polycarbonate.

  The term “flame-retardant resin” as used herein refers to a resin that is not flammable but has flame retardancy when classified into flammability and flame retardancy (including non-flammability). is there. In the present embodiment, the cover main body 6 has flame retardancy of UL94 V-2 or more. “UL94” is a standard for evaluation of flame retardancy defined by UL (Underwriters Laboratories). There are six grades of UL94 standard, "HB" in horizontal combustion test, "V-2", "V-1", "V-0", "5VA" and "5VB" in vertical combustion test. There is a grade. Among these six grades, "HB" has the lowest flame retardancy, and "HB", "V-2", "V-1", "V-0", "5VB", and "5VA" in that order. The nature becomes high. That is, the cover body 6 having the flame retardancy of UL94 V-2 or more is “V-2”, “V-1”, “V-0”, “5VB” and “5VA” except for “HB”. Of any of the above. A resin having a flame retardancy of UL94 V-2 or higher has a property of burning in the atmosphere during the exposure to a flame but extinguishing the fire when released from the flame (self-extinguishing property). In other words, it is preferable that the flame-retardant resin used as the material of the cover main body 6 has a flame retardancy of “V-2” or more in the UL94 standard when the thickness of the sample is, for example, 2.5 mm.

  Here, a sticking portion 604 for sticking the label member 7 is formed at the center of the front surface 603 of the front wall 601 in the left-right direction. The affixing part 604 is slightly depressed as compared with the left and right ends of the front surface 603 of the front wall 601. The attachment portion 604 is formed over substantially the entire length of the front wall 601 in the vertical direction. A gate mark 66 is located substantially at the center of the attaching section 604. In other words, a gate mark 66 is provided on one surface (front surface 603) of the main wall 60 opposite to the wiring device 1 on the front wall 601. The gate trace 66 is a portion serving as an entrance of the resin when the resin flows into the mold during molding of the cover body 6.

  In the cover main body 6, at least one surface of the first side wall 61 and the second side wall 62 on the side opposite to the wiring device 1 is made of a textured (embossed) uneven surface. The “texture” here is a process of forming a fine wrinkle pattern (texture) on the surface of the cover body 6 when the cover body 6 is formed. In the present embodiment, the left side surface (one surface on the side opposite to the wiring device 1) of the first side wall 61 of the cover body 6 is formed of the uneven surface 611, and the second side wall 62 (on the side opposite to the wiring device 1). (One surface) comprises an uneven surface 621. Further, the front surface 603 of the front wall 601 and the upper surface of the upper wall 602 of the cover main body 6 are also made of a textured surface. Thereby, even if the cover body 6 is unpainted (without painting), it is possible to realize a texture similar to painting by fine irregularities on the surface. However, the sticking portion 604 of the front surface 603 of the front wall 601 is covered with the label member 7 and does not need to have an uneven surface.

  The cover main body 6 has a first rib 63, a second rib 64, and a hooking claw 65 as shown in FIG. The first rib 63 protrudes from the inner surface of the rear end of each of the first side wall 61 and the second side wall 62. The second rib 64 protrudes from the inner surface of the rear end of the upper wall 602. Each of the first rib 63 and the second rib 64 is formed in a shape extending along the periphery of the opening on the rear surface of the cover body 6. The hooking claw 65 protrudes from the rear surface of the lower end of the front wall 601.

  The label member 7 has a thin plate shape and is attached to the attaching portion 604 of the cover body 6. That is, the label member 7 is attached to one surface (the front surface 603) of the front wall 601 of the main wall portion 60 so as to cover the gate trace 66. The label member 7 may be attached to the attaching section 604 with an adhesive or an adhesive tape, or may be attached to the attaching section 604 with an adhesive or the like. The material of the label member 7 is resin, metal, paper, or the like.

  With the above-described configuration, the cover 2 can be attached to and detached from the wiring device 1 with the wiring device 1 still attached to the construction surface 900. Here, the cover 2 is attached to the wiring device 1 by being slid downward while being pressed against the body 4 from the front. At this time, the first rib 63 and the second rib 64 are fitted into the circumferential groove 414 formed in the body 4 and the hooking claw 65 is hooked on the front end of the lower surface of the storage section 42, so that the body 4 is The cover 2 is joined. On the other hand, a jig such as a screwdriver is inserted into a gap between the rear surface of the front wall 601 and the front surface of the storage section 42, and the cover 2 is slid upward in a state where the hooks 65 are released. 2 is removed from the wiring device 1. Therefore, in the wiring device 10, only the cover 2 can be replaced without removing the wiring device 1 from the construction surface 900.

(3) Details of outlet (3.1) Basic configuration Next, the configuration of the outlet 3 will be described in detail. The outlet 3 is an outlet (Outlet) to which the plug 100 of the electric device is connected. As shown in FIG. 9, the plug 100 includes a plug body 101, a pair of blades 102A and 102B serving as power supply electrodes, and a grounding blade 102C serving as a ground electrode. The blades 102A and 102B and the grounding blade 102C are provided so as to protrude from one surface of the plug body 101. Each of the blades 102A and 102B has a flat plate shape, and the grounding blade 102C has a columnar shape (round pin shape) having a hemispherical tip. The blades 102A and 102B face each other. Here, the amount of protrusion of the grounding blade 102C from the plug body 101 is set to be larger than the amount of protrusion of the blades 102A and 102B from the plug body 101 by a predetermined amount L0.

  Hereinafter, description will be made using “first direction Z”, “second direction Y”, and “third direction X” based on the insertion direction of plug 100. The first direction Z is a direction in which the plug 100 is inserted. The second direction Y is a direction orthogonal to the first direction Z, and is a direction in which the blades 102A and 102B are arranged. The third direction X is a direction orthogonal to both the first direction Z and the second direction Y. Here, the first direction Z, the second direction Y, and the third direction X are directions defined separately from the “vertical direction”, the “front-back direction”, and the “left-right direction”. In the present embodiment, the first direction Z and the second direction Y are directions different from the “vertical direction” and the “front-back direction”, respectively, but the third direction X matches the “left-right direction”. Arrows indicating “first direction Z”, “second direction Y”, and “third direction X” in the drawings are merely described for explanation, and have no substance.

  As shown in FIGS. 7 and 8, the outlet 3 includes a blade receiving block 140, a door block 150, and a terminal portion 180 in the case 30. The blade receiving block 140 is a member for connecting the blades 102A and 102B of the plug 100 and the grounding blade 102C. The door block 150 is a member for covering the blade receiving block 140 in a state where the plug 100 is not connected to the wiring device 1. The terminal portion 180 is a quick connection terminal for connecting an electric wire inserted from the terminal hole 34 of the case 30 as described above.

  The blade receiving block 140 has a pair of blade receiving members 14A and 14B and a grounding member 14C. The blade receiving members 14A and 14B hold the blades 102A and 102B and are electrically connected to the blades 102A and 102B. The grounding member 14C holds the grounding blade 102C and is electrically connected to the grounding blade 102C. In the present embodiment, since a two-port type outlet is an example of the outlet 3, two combinations of the blade receiving members 14A and 14B and the grounding member 14C are provided in one outlet 3. Hereinafter, one of the two sets of blade receiving members 14A and 14B and the grounding member 14C will be described unless otherwise specified.

  The door block 150 has a pair of doors 15A and 15B, a grounding door 15C, a pair of elastic members 16A and 16B, and a grounding elastic member 16C. In the present embodiment, since the two-port type outlet is an example of the outlet 3, the combination of the doors 15A and 15B, the grounding door 15C, the elastic members 16A and 16B, and the grounding elastic member 16C is combined into one outlet 3. Two sets are provided. In the following, unless otherwise specified, one of the two doors 15A and 15B, the grounding door 15C, the elastic members 16A and 16B, and the grounding elastic member 16C is one of the doors 15A and 15B, the grounding door 15C, and the elasticity. The members 16A and 16B and the grounding elastic member 16C will be described.

  The doors 15A and 15B are provided in one-to-one correspondence with the blade receiving members 14A and 14B. The door bodies 15A and 15B are housed in the case 30 and each have a closed position covering the corresponding blade receiving member 14A and 14B as viewed from the insertion hole 312, and the corresponding blade receiving member 14A and 14A as viewed from the insertion hole 312. Move to an open position to expose 14B. The elastic members 16A and 16B are provided in one-to-one correspondence with the doors 15A and 15B. The elastic members 16A and 16B apply an elastic force to the corresponding doors 15A and 15B so as to push the corresponding doors 15A and 15B from the open position to the closed position. Similarly, the grounding door body 15C is provided corresponding to the grounding member 14C. The grounding door body 15C is housed in the case 30, and moves between a closed position that covers the grounding member 14C when viewed from the grounding insertion hole 313 and an open position that exposes the grounding member 14C when viewed from the grounding insertion hole 313. Moving. The grounding elastic member 16C is provided corresponding to the grounding door body 15C. The grounding elastic member 16C applies an elastic force to the grounding door body 15C so as to push the grounding door body 15C from the open position to the closed position.

  The terminal portion 180 has a pair of power supply terminal plates 17A and 17B and a ground terminal plate 17C. The power supply terminal plate 17A is combined with the pair of lock springs 18A and the release button 19A to form a quick connection terminal for connecting a power supply line. The power supply terminal plate 17B is combined with the pair of lock springs 18B and the release button 19B to form a quick connection terminal for connecting a power supply line. The ground terminal plate 17C is combined with a pair of lock springs 18C and a release button 19C to form a quick connection terminal for connecting a ground wire. Further, an extension terminal plate 17D is electrically connected to the ground terminal plate 17C. The extension terminal plate 17D is combined with the lock spring 18D to form a quick connection terminal for connecting the extension terminal plate 35 (see FIG. 5).

  The blade receiving members 14A, 14B and the grounding member 14C constituting the blade receiving block 140 are electrically connected to the power supply terminal plates 17A, 17B and the grounding terminal plate 17C. In this embodiment, since two sets of combinations of the blade receiving members 14A and 14B and the grounding member 14C are provided, two sets of the blade receiving members are provided for one set of the power supply terminal plates 17A and 17B and the grounding terminal plate 17C. 14A, 14B and the grounding member 14C are connected. Specifically, the power supply terminal plate 17A and the two blade receiving members 14A are integrally formed from one metal plate, and the power supply terminal plate 17B and the two blade receiving members 14B are formed from one metal plate. It is formed integrally. Similarly, the ground terminal plate 17C, the extension terminal plate 17D, and the two ground members 14C are integrally formed from one metal plate.

(3.2) Blade receiving block Next, the configuration of the blade receiving block 140 will be described in more detail with reference to FIGS. 9 and 1. The blade receiving member 14B has basically the same configuration as the blade receiving member 14A, and has a substantially symmetric relationship in the second direction Y. Therefore, in the description relating to the blade receiving member 14A, if “A” in the reference sign is replaced with “B” and the description of the direction in the second direction Y is reversed, the blade receiving member that is the “second blade receiving member” 14B will be described. Therefore, in the following, of the blade receiving member 14B, a description of the same configuration as that of the blade receiving member 14A will not be repeated.

  The blade receiving members 14A and 14B are arranged in the case 30 at positions corresponding to the pair of insertion holes 312, respectively. That is, the blade receiving members 14A and 14B are arranged so as to be arranged in the second direction Y. Here, the blade receiving member 14A, which is the "first blade receiving member", and the blade receiving member 14B, which is the "second blade receiving member", are such that the blade receiving member 14A has a construction surface 900 (an outer wall surface of a building). Are arranged side by side in the second direction Y so as to be on the side. Thus, the blade receiving member 14A is connected to the plug blade 102A inserted from the insertion hole 312 closer to the construction surface 900, and the blade receiving member 14B is inserted from the insertion hole 312 farther from the construction surface 900. Plug blade 102B is connected. The grounding member 14 </ b> C is arranged in the case 30 at a position corresponding to the grounding insertion hole 313. Therefore, the grounding blade 102C inserted from the grounding insertion hole 313 is connected to the grounding member 14C. Here, the grounding member 14C is located at a position between the blade receiving members 14A and 14B in the second direction Y, and is disposed beside the blade receiving members 14A and 14B in the third direction X.

  Each of the blade receiving members 14A and 14B and the grounding member 14C is made of a conductive and elastic metal, such as copper or a copper alloy.

  The blade receiving member 14A has a first blade receiving piece 141A and a second blade receiving piece 142A facing each other in the second direction Y. The blade receiving member 14A is configured to be electrically connected to the blade 102A with the blade 102A sandwiched between the first blade receiving piece 141A and the second blade receiving piece 142A.

  The first blade receiving piece 141A and the second blade receiving piece 142A are arranged in the second direction Y such that the first blade receiving piece 141A is on the construction surface 900 side. The blade receiving member 14A further has a connecting piece 143A (see FIG. 13A) for connecting the first blade receiving piece 141A and the second blade receiving piece 142A. The connecting piece 143A connects the ends of the first blade receiving piece 141A and the second blade receiving piece 142A on the side opposite to the insertion hole 312 in the first direction Z. The first blade receiving piece 141A and the second blade receiving piece 142A have symmetric shapes in the second direction Y.

  Each of the first blade receiving piece 141A and the second blade receiving piece 142A has a base 111, an inclined part 112, an intermediate part 113, and a guide part 114. The bases 111 of the first blade receiving piece 141A and the second blade receiving piece 142A are connected by a connecting piece 143A. The pair of bases 111 are opposed to each other and arranged substantially parallel to the first direction Z. The pair of inclined portions 112 protrude from the edge of the base portion 111 on the insertion hole 312 side toward the insertion hole 312. The pair of inclined portions 112 are inclined with respect to the first direction Z such that the closer to the insertion hole 312, the closer to each other. The pair of intermediate portions 113 protrude from the edge of the inclined portion 112 on the insertion hole 312 side toward the insertion hole 312. The pair of intermediate portions 113 is inclined with respect to the first direction Z so as to approach each other as approaching the insertion hole 312. The inclination angle of the intermediate portion 113 with respect to the first direction Z is smaller than the inclination angle of the inclination portion 112 with respect to the first direction Z. The pair of guide portions 114 protrude toward the insertion hole 312 from the edge of the intermediate portion 113 on the insertion hole 312 side. The pair of guide portions 114 are inclined with respect to the first direction Z such that the closer to the insertion hole 312, the farther away from each other.

  According to this configuration, the distance between the first blade receiving piece 141A and the second blade receiving piece 142A in the second direction Y is minimized by the power pole holding part 115 formed by the connection between the intermediate part 113 and the guide part 114. Becomes The distance between the first blade receiving piece 141A and the second blade receiving piece 142A in the power pole holding unit 115 is smaller than the thickness of the blades 102A and 102B. On the other hand, the distance between the first blade receiving piece 141A and the second blade receiving piece 142A at the edge of the guide portion 114 on the insertion hole 312 side is larger than the thickness of the plug blade 102A.

  The grounding member 14C has a first grounding piece 141C and a second grounding piece 142C facing each other in the third direction X. The grounding member 14C is configured to be electrically connected to the grounding blade 102C with the grounding blade 102C sandwiched between the first grounding piece 141C and the second grounding piece 142C.

  The first grounding piece 141C and the second grounding piece 142C are arranged in the third direction X such that the first grounding piece 141C is on the opposite side to the blade receiving members 14A and 14B. The grounding member 14C further has a connecting piece 143C (see FIG. 13A) for connecting the first grounding piece 141C and the second grounding piece 142C. The connecting piece 143C connects ends of the first grounding piece 141C and the second grounding piece 142C that are opposite to the grounding insertion hole 313 in the first direction Z.

  The first grounding piece 141C has a base 121, an inclined part 122, and a guide part. The second grounding piece 142C has a base 131, an inclined part 132, an intermediate part 133, and a guide part 134. The bases 121 and 131 of the first grounding piece 141C and the second grounding piece 142C are connected by a connecting piece 143A. The first grounding piece 141C and the second grounding piece 142C have asymmetric shapes in the third direction X.

  The bases 121 and 131 face each other and are arranged substantially parallel to the first direction Z. The inclined portions 122 and 132 project from the edges of the base portions 121 and 131 on the ground insertion hole 313 side toward the ground insertion hole 313. The inclined portions 122 and 132 are inclined with respect to the first direction Z so as to approach each other as approaching the ground insertion hole 313. The intermediate portion 133 protrudes from the edge of the inclined portion 132 on the ground insertion hole 313 side toward the ground insertion hole 313. The intermediate portion 133 is inclined with respect to the first direction Z so as to approach the first grounding piece 141C as approaching the ground insertion hole 313. The inclination angle of the intermediate portion 133 with respect to the first direction Z is smaller than the inclination angle of the inclination portion 132 with respect to the first direction Z. The guide portion 124 protrudes from the edge of the inclined portion 122 on the ground insertion hole 313 side toward the ground insertion hole 313. The guide portion 134 protrudes from the edge of the intermediate portion 133 on the ground insertion hole 313 side toward the ground insertion hole 313. The guides 124 and 134 are inclined with respect to the first direction Z such that the guides 124 and 134 move away from each other as they approach the ground insertion hole 313. The inclination angle of the guide portion 124 with respect to the first direction Z is smaller than the inclination angle of the guide portion 134 with respect to the first direction Z, and is larger than the inclination angle of the intermediate portion 133 with respect to the first direction Z.

  Here, the dimensions of the first ground piece 141C and the second ground piece 142C in the first direction Z are set substantially equal. Specifically, in the first direction Z, the total size of the base portion 121 and the inclined portion 122 in the first grounding piece 141C is substantially equal to the total size of the base portion 131 and the inclined portion 132 in the second grounding piece 142C. Further, in the first direction Z, the size of the guide portion 124 in the first grounding piece 141C is substantially equal to the total size of the intermediate portion 133 and the guide portion 134 in the second grounding piece 142C.

  According to this configuration, the distance between the first grounding piece 141C and the second grounding piece 142C in the third direction X is the connection between the inclined portion 122 and the guide portion 124 and the connection between the inclined portion 132 and the intermediate portion 133. It is minimized by the grounding pole holding part 125 composed of the parts. That is, the distance between the first grounding piece 141C and the second grounding piece 142C in the third direction X is not minimum at the corner 136 formed by the connection between the intermediate part 133 and the guide part 134. The distance between the first grounding piece 141C and the second grounding piece 142C in the grounding pole holder 125 is set smaller than the diameter of the grounding blade 102C. On the other hand, the distance between the first grounding piece 141C and the second grounding piece 142C at the edge on the grounding insertion hole 313 side of the guide portions 124 and 134 is set to be larger than the diameter of the grounding blade 102C.

  Next, the relative positional relationship between the blade receiving members 14A and 14B and the grounding member 14C will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a part of the outlet 3, in which the periphery of the blade receiving member 14B is a cross section viewed from one side in the third direction X, and the periphery of the grounding member 14C is in the second direction Y. It shows a cross section viewed from one side. Here, the relationship between the blade receiving member 14B and the grounding member 14C is illustrated, but the same applies to the relationship between the blade receiving member 14A and the grounding member 14C.

  Here, as a premise, the insertion amount of the grounding blade 102C from the connection surface 311 is larger than the blades 102A and 102B by a predetermined amount L0. That is, as described above, the amount of protrusion of the grounding blade 102C from the plug body 101 is larger than the amount of protrusion of the blades 102A and 102B from the plug body 101 by the predetermined amount L0. Therefore, the amount of insertion from the connection surface 311 also differs by a predetermined amount L0 between the ground blade 102C and the blades 102A and 102B.

  The blade receiving member 14B is configured such that the blade 102B is sandwiched between the first blade receiving piece 141B and the second blade receiving piece 142B in the power pole holding portion 115 located at the first distance L1 from the connection surface 311 in the first direction Z. Have been. Specifically, the power pole holding portion 115, which is a connection portion between the intermediate portion 113 and the guide portion 114, is located at a first distance L1 from the connection surface 311 in the first direction Z.

  The grounding member 14C is configured such that the grounding blade 102C is sandwiched between the first grounding piece 141C and the second grounding piece 142C at the grounding pole holding portion 125 located at a second distance L2 from the connection surface 311 in the first direction Z. ing. Specifically, the grounding pole holding portion 125 including the connecting portion between the inclined portion 122 and the guide portion 124 and the connecting portion between the inclined portion 132 and the intermediate portion 133 is located at a second distance from the connection surface 311 in the first direction Z. It is in the position of L2.

  Here, the first distance L1 and the second distance L2 are determined by using a predetermined amount L0 that is a difference between the insertion amounts of the grounding blade 102C and the blades 102A and 102B from the connection surface 311 as follows. It is represented by That is, the second distance L2 is larger than a value (L1 + L0) obtained by adding the predetermined amount L0 to the first distance L1. That is, the predetermined amount L0, the first distance L1, and the second distance L2 have a relationship of “L2> L1 + L0”.

  In the first direction Z, a distance from the first grounding piece 141C and the second grounding piece 142C to the connection surface 311 is defined as a third distance L3. Similarly, the distance from the first blade receiving piece 141A and the second blade receiving piece 142A to the connection surface 311 in the first direction Z is defined as a fourth distance L4. Then, with respect to the third distance L3 and the fourth distance L4, using the predetermined amount L0 which is a difference between the insertion amount of the grounding blade 102C and the blades 102A and 102B from the connection surface 311 in the following relationship. expressed. That is, the third distance L3 is less than the value (L4 + L0) obtained by adding the predetermined amount L0 to the fourth distance L4 in both the first grounding piece 141C and the second grounding piece 142C. That is, the predetermined amount L0, the third distance L3, and the fourth distance L4 have a relationship of “L3 <L4 + L0”.

  Furthermore, in the present embodiment, the first distance L1, the second distance L2, the third distance L3, and the fourth distance L4 have a relationship of “L4 <L3 <L1 <L2”.

  The operation of connecting the plug 100 to the outlet 3 configured as described above will be described with reference to FIGS. 10A to 10C. 10A to 10C are schematic cross-sectional views showing a part of the outlet 3 similarly to FIG. 1, and illustrate a relationship between the blade receiving member 14B and the grounding member 14C.

  When the blade 102B and the ground blade 102C are inserted through the insertion hole 312 and the ground insertion hole 313, the ground blade 102C first contacts the ground member 14C as shown in FIG. 10A. In the state shown in FIG. 10A, the blade 102B is not in contact with the blade receiving member 14B. That is, since the third distance L3 is less than the value obtained by adding the predetermined amount L0 to the fourth distance L4 in both the first grounding piece 141C and the second grounding piece 142C, the blade 102B is attached to the blade receiving member 14B. Prior to contact, the grounding blade 102C contacts the grounding member 14C. At this time, even if the grounding blade 102C is tilted with respect to the first direction Z due to the plug 100 being inserted obliquely, the grounding blade 102C will be in contact with the first grounding piece 141C and the second grounding piece. 142C. However, in the state shown in FIG. 10A, since the grounding blade 102C has not reached the grounding pole holding part 125 of the grounding member 14C, neither the blade 102B nor the grounding blade 102C is held by the outlet 3. .

  When the blade 102B and the ground blade 102C are further inserted from the state shown in FIG. 10A, the blade 102B comes into contact with the blade receiving member 14B, and thereafter, as shown in FIG. At the power pole holding unit 115. Therefore, the blade 102B is sandwiched between the first blade receiving piece 141B and the second blade receiving piece 142B by the power pole holding portion 115, and the blade receiving member 14B is brought into contact with the blade 102B by a certain contact pressure. Electrically connected. However, in the state shown in FIG. 10B, the grounding blade 102C has not reached the grounding pole holding portion 125 of the grounding member 14C. That is, as described above, since the second distance L2 is larger than the value obtained by adding the predetermined amount L0 to the first distance L1, the blade 102B is moved before the ground blade 102C reaches the ground pole holding unit 125. Reaches the power pole holding unit 115.

  When the blade 102B and the grounding blade 102C are further inserted from the state shown in FIG. 10B, as shown in FIG. 10C, the grounding blade 102C reaches the grounding pole holding portion 125 of the grounding member 14C. Therefore, the grounding blade 102C is sandwiched between the first grounding piece 141C and the second grounding piece 142C by the grounding pole holder 125, and the grounding member 14C is electrically connected to the grounding blade 102C by a certain contact pressure. Connected. Here, from the state shown in FIG. 10B until the grounding blade 102C reaches the grounding pole holding portion 125, the guide portion 124 of the grounding member 14C is inclined with respect to the first direction Z. The force required to insert the plug 100 (insertion force) increases proportionally. Then, after the grounding blade 102C reaches the grounding pole holding portion 125, the insertion force decreases.

  Thus, in the outlet 3 according to the present embodiment, when the plug 100 is connected, first, the grounding blade 102C contacts the grounding member 14C. Thereafter, the blade 102B is sandwiched between the first blade receiving piece 141B and the second blade receiving piece 142B, and then the grounding blade 102C is sandwiched between the first grounding piece 141C and the second grounding piece 142C. .

  However, after the grounding blade 102C comes into contact with the grounding member 14C, the outlet 3 is sandwiched between the first blade receiving piece 141B and the second blade receiving piece 142B. Any configuration may be used as long as it is sandwiched between the first grounding piece 141C and the second grounding piece 142C. Therefore, the distance from the power supply pole holding portion 115, which is a connection portion between the intermediate portion 113 and the guide portion 114, of the blade receiving member 14B to the connection surface 311 does not necessarily need to be the first distance L1. For example, when the blade receiving member 14B sandwiches the blade 102B at a position closer to the insertion hole 312 than the power pole holding portion 115, the distance from the connection surface 311 to this position is defined as a first distance L1, and "L2> L1 + L0 ”may be satisfied.

  Here, in the present embodiment, the connection surface 311 is a flat surface and has no structure for holding the plug body 101. That is, since the case 30 itself has no function of preventing the plug 100 from tilting, the plug 100 is easily tilted in the first direction Z. Therefore, as described above, when the grounding blade 102C comes into contact with either the first grounding piece 141C or the second grounding piece 142C, the grounding blade 102B comes into contact with the grounding blade before the blade 102B comes into contact with the blade receiving member 14B. It is particularly useful that 102C contacts ground member 14C.

(3.4) Door Block Next, the configuration of the door block 150 will be described in more detail with reference to FIGS. 11 and 12. The door body 15B has basically the same configuration as the door body 15A, and has a substantially symmetric relationship in the second direction Y. Therefore, in the description regarding the door body 15A, if “A” in the reference sign is replaced with “B” and the description of the direction in the second direction Y is reversed, the description will be about the door body 15B. Also, the grounding door body 15C has basically the same configuration as the door body 15A. Therefore, in the following, among the door bodies 15A and 15B and the grounding door body 15C, the description of the same configuration as the door body 15A will be appropriately omitted. Further, the elastic member 16B has basically the same configuration as the elastic member 16A, and has a substantially symmetric relationship in the second direction Y. Accordingly, in the description of the elastic member 16A, the description of the elastic member 16B can be obtained by replacing "A" in the reference numeral with "B" and reversing the description of the direction in the second direction Y. Also, the grounding elastic member 16C has basically the same configuration as the elastic member 16A. Therefore, in the following, among the elastic members 16A and 16B and the grounding elastic member 16C, the description of the same configuration as the elastic member 16A will be appropriately omitted.

  The door 15A is made of, for example, a synthetic resin. The door body 15A includes a plate-shaped support portion 151 extending along the first direction Z, and an opening / closing portion 152 protruding from the end of the support portion 151 on the insertion hole 312 side in the thickness direction of the support portion 151. Have. The door body 15A is formed in a substantially L-shape when viewed from one side in the third direction X by the support portion 151 and the opening / closing portion 152. The support portion 151 is disposed on the side opposite to the second blade receiving piece 142A in the second direction Y with respect to the first blade receiving piece 141A. The support part 151 is configured to be rotatable around an end opposite to the insertion hole 312 as a fulcrum. The opening / closing part 152 is configured to be able to advance and retreat with respect to the space between the insertion hole 312 and the blade receiving member 14A with the rotation of the support part 151. Thus, the door body 15A moves between a closed position that covers the blade receiving member 14A when viewed from the insertion hole 312 and an open position that exposes the blade receiving member 14A when viewed from the insertion hole 312.

  Further, the amount of protrusion of the opening / closing portion 152 from the support portion 151 decreases as the position approaches the insertion hole 312 in the first direction Z. Thereby, the surface facing the insertion hole 312 forms an inclined surface 153 inclined with respect to the first direction Z. Further, the door body 15A has a door stopper 154. The door stopper 154 is formed on a surface of the door body 15A opposite to the first blade receiving piece 141A in the second direction Y. The door stopper 154 is formed only on the doors 15A and 15B of the doors 15A and 15B and the grounding door 15C. The function of the door stopper 154 will be described in the section “(3.5) Abnormal opening prevention structure”.

  The elastic member 16A is made of, for example, a metal leaf spring. The elastic member 16A is disposed on the side opposite to the first blade receiving piece 141A in the second direction Y with respect to the support portion 151 of the door body 15A. The elastic member 16A is fixed to the inner surface of the case 30. The elastic member 16A applies an elastic force to the door body 15A so as to push the support portion 151 toward the first blade receiving piece 141A.

  According to the above-described configuration, when the blade 102A is not inserted into the insertion hole 312, the door body 15A is located at the closed position by the elastic force of the elastic member 16A. Therefore, the insertion hole 312 is closed from the inside of the case 30 by the opening / closing portion 152 of the door 15A. In this state, when the blade 102A is inserted through the insertion hole 312, the tip of the blade 102A comes into contact with the inclined surface 153. When the blade 102A is further inserted from this state, the inclined surface 153 is pushed by the blade 102A, and the opening / closing portion 152 is pushed out of the space between the insertion hole 312 and the blade receiving member 14A. The support part 151 rotates while elastically deforming the elastic member 16A. As a result, the door 15A moves from the closed position to the open position. On the other hand, when the blade 102A is removed, the door 15A moves from the open position to the closed position by the elastic force of the elastic member 16A.

(3.5) Abnormal opening prevention structure Next, a structure for preventing “abnormal opening” of the blade receiving members 14A and 14B and the grounding member 14C will be described with reference to FIGS. 13A and 13B. FIG. 13A is a schematic perspective view showing a main part of the outlet 3 and omitting the illustration other than the inner cover 31, the first case 32 and the blade receiving block 140. FIG. 13B is a schematic perspective view illustrating a main part of the outlet 3 and omitting illustrations other than the inner cover 31 and the blade receiving block 140. Here, the “abnormal opening” means that the blade receiving members 14A and 14B and the grounding member 14C open beyond the movable range in normal use of the wiring device 10. For example, in a state where the plug 100 is connected to the outlet 3, when a large external force is applied to the plug 100 in a direction intersecting the first direction Z, the blade receiving members 14A, 14A, 102C from the blades 102A, 102B or the grounding blade 102C. A large external force acts on 14B or the grounding member 14C. Specifically, when the power cord is pulled out and the plug 100 is pulled out, that is, when the power cord is caught by a person's foot or the like, the above-described external force acts and the “abnormal opening” occurs. May occur. In particular, when the connection surface 311 is flat and does not have a structure for holding the plug body 101 as in the present embodiment, the plug 100 is easily inclined with respect to the first direction Z, so that “abnormal opening” is likely to occur. Then, when "abnormal opening" occurs in the blade receiving members 14A, 14B and the grounding member 14C, the blade receiving members 14A, 14B and the grounding member 14C may be plastically deformed, which may hinder the function as an outlet. is there. In the present embodiment, the configuration described below is adopted as a measure against such “abnormal opening”.

  That is, as shown in FIG. 13A, the blade receiving member 14A has a pair of stoppers 116 protruding from both end edges of the first blade receiving piece 141A in the third direction X. The pair of stoppers 116 are formed so as to protrude from the guide portion 114 of the first blade receiving piece 141A on both sides in the third direction X. The pair of stoppers 116 are set to have dimensions that protrude at least from both end edges of the door body 15A in the third direction X to both sides in the third direction X. The inner cover 31 of the case 30 has a pair of regulating portions 314 facing the pair of stoppers 116 in the second direction Y. The pair of restricting portions 314 face the pair of stoppers 116 from the side opposite to the second blade receiving piece 142A in the second direction Y. The pair of regulating portions 314 are arranged on both sides of the insertion hole 312 in the third direction X in the inner cover 31.

  Accordingly, the movable range of the first blade receiving piece 141A in the direction away from the second blade receiving piece 142A in the second direction Y is limited by the pair of stoppers 116 contacting the pair of restricting portions 314. In other words, the movable range of the first blade receiving piece 141A in the direction away from the second blade receiving piece 142A in the second direction Y is defined by the clearance between the pair of stoppers 116 and the pair of regulating portions 314.

  Here, the pair of stoppers 116 are provided only on the first blade receiving piece 141A adjacent to the door body 15A in the second direction Y among the first blade receiving piece 141A and the second blade receiving piece 142A. That is, with respect to the second blade receiving piece 142A, the restricting wall 318 provided on the inner cover 31 of the case 30 faces from the side opposite to the first blade receiving piece 141A in the second direction Y. Therefore, even if there is no stopper, the movable range of the second blade receiving piece 142A away from the first blade receiving piece 141A is limited by contacting the regulating wall 318. On the other hand, with respect to the first blade receiving piece 141A, the door 15A, which is a movable member, is located on the side opposite to the second blade receiving piece 142A in the second direction Y, so that a regulating wall cannot be provided. . Therefore, with respect to the first blade receiving piece 141A, by providing a pair of stoppers 116 protruding from both end edges in the third direction X, the movable range in the direction away from the second blade receiving piece 142A is limited.

  Here, a protrusion 316 is formed on the inner cover 31 between the one restricting portion 314 and the second blade receiving piece 142A. The protrusion 316 is disposed between the one stopper 116 and the second blade receiving piece 142A, and in a state where the plug 100 is not connected to the outlet 3, the first blade receiving piece 141A and the second blade receiving piece 142A. Preliminary opening is performed to form a predetermined gap between the opening 142A. Since the preliminary opening is performed, the force required to insert the blade 102A into the blade receiving member 14A is smaller than when the preliminary opening is not performed. A similar preliminary opening protrusion 316 is also provided for the blade receiving member 14B (see FIG. 13B).

  In the present embodiment, a configuration for preventing “abnormal opening” is also applied to the door body 15A. That is, a door stopper 154 is formed on a surface of the door body 15A opposite to the first blade receiving piece 141A in the second direction Y as shown in FIG. The door stopper 154 is formed so as to protrude from a surface of the support portion 151 opposite to the first blade receiving piece 141A. The inner cover 31 of the case 30 has a door regulating portion 315 facing the door stopper 154 in the second direction Y. The door restricting portion 315 faces the door stopper 154 from the side opposite to the first blade receiving piece 141A in the second direction Y.

  Thereby, the movable range of the door body 15A in the direction away from the first blade receiving piece 141A in the second direction Y is limited by the contact of the door stopper 154 with the door restricting portion 315. In other words, the movable range of the door body 15A in the direction away from the first blade receiving piece 141A in the second direction Y is defined by the clearance between the door stopper 154 and the door regulating portion 315.

  By the way, the outlet 3 is provided with a blade receiving member 14B which is a "second blade receiving member" separately from the blade receiving member 14A which is a "first blade receiving member". However, the pair of stoppers 116 are provided only on the blade receiving member 14A among the blade receiving members 14A and 14B. The reason why the stopper is not provided on the blade receiving member 14B is as follows.

  That is, in the outlet 3, the guide wall 317 is provided as means for preventing the plug 100 from tilting in the third direction X when the plug 100 is connected. Specifically, as shown in FIG. 13B, the case 30 is provided on at least one side of the blade receiving member 14B in the third direction X with a guide wall 317 for preventing the inclination of the blade 102B in the third direction X. have. In the present embodiment, a pair of guide walls 317 are provided on both sides of the blade receiving member 14B in the third direction X in the inner cover 31. Accordingly, the inclination of the blade 102B inserted from the insertion hole 312 in the third direction X is suppressed by the pair of guide walls 317. Since it is effective to arrange such a guide wall 317 in a position close to the blade receiving member 14B in the third direction X, if a stopper is provided on the blade receiving member 14B, the stopper interferes with the guide wall 317. Will be. Therefore, in the present embodiment, the pair of stoppers 116 are provided only on the blade receiving member 14A among the blade receiving members 14A and 14B.

  Further, in the wiring device 10 according to the present embodiment, the case 30 is configured to be attached to the construction surface 900 in a direction in which the second direction Y intersects the construction surface 900. The blade receiving members 14A and 14B are arranged in the second direction Y such that the blade receiving member 14A is on the construction surface 900 side. Further, the first blade receiving piece 141A and the second blade receiving piece 142A are arranged side by side in the second direction Y such that the first blade receiving piece 141A is on the construction surface 900 side. Therefore, in the case of so-called “scraping” or when a human foot or the like is caught on the power cord, the first blade receiving piece 141A of the blade receiving member 14A closer to the construction surface 900 among the blade receiving members 14A and 14B. A large external force acts on. That is, in such a case, since the external force hardly acts on the first blade receiving piece 141B of the blade receiving member 14B remote from the construction surface 900, the prevention of “abnormal opening” by the pair of stoppers 116 is required. Only the receiving member 14A may be used.

  On the other hand, as for the door body 15B, a configuration for preventing “abnormal opening” is applied as in the case of the door body 15A. That is, the door stopper 154 is formed on the surface of the door body 15B opposite to the first blade receiving piece 141B in the second direction Y. The movable range of the door body 15B in the direction away from the first blade receiving piece 141B in the second direction Y is limited by the contact of the door stopper 154 with the door stopper 315. Thus, although the first blade receiving piece 141B of the blade receiving member 14B itself does not have a structure for preventing “abnormal opening”, the door 15B is partially moved away from the second blade receiving piece 142B by the door 15B. The movable range of the one-blade receiving piece 141B is limited.

  Also, a configuration for preventing “abnormal opening” is applied to the grounding member 14C, similarly to the blade receiving member 14A. That is, as shown in FIG. 13A, the grounding member 14C has a pair of grounding stoppers 126 protruding from both end edges of the first grounding piece 141C in the second direction Y. The pair of grounding stoppers 126 are formed to protrude from the guide portion 124 of the first grounding piece 141C to both sides in the second direction Y. The pair of grounding stoppers 126 are set to have dimensions that protrude from at least both end edges in the second direction Y of the grounding door body 15C on both sides in the second direction Y. The case 30 has a pair of grounding restricting portions 310 and 321 facing the pair of grounding stoppers 126 in the third direction X. The pair of grounding restricting portions 310 and 321 face the pair of grounding stoppers 126 from the side opposite to the second grounding piece 142C in the third direction X. The grounding control part 310 is formed by a part of the inner cover 31, and the grounding control part 321 is formed by a part of the first case 32.

  Accordingly, the movable range of the first grounding piece 141C in the direction away from the second grounding piece 142C in the third direction X is limited by the pair of grounding stoppers 126 contacting the pair of grounding restriction portions 310 and 321. . In other words, the movable range of the first grounding piece 141C in the direction away from the second grounding piece 142C in the third direction X is defined by the clearance between the pair of grounding stoppers 126 and the pair of grounding restriction portions 310 and 321. .

  Here, the pair of grounding stoppers 126 are provided only on the first grounding piece 141C adjacent to the grounding door body 15C in the third direction X among the first grounding piece 141C and the second grounding piece 142C. That is, the regulating wall 319 provided on the inner cover 31 of the case 30 faces the second grounding piece 142C from the side opposite to the first grounding piece 141C in the third direction X. Therefore, even if there is no stopper, the movable range of the second grounding piece 142C in the direction away from the first grounding piece 141C is limited by contacting the regulating wall 319.

(4) Advantage As described above, the outlet 3 according to the present embodiment includes the case 30, the pair of blade receiving members 14A and 14B, and the ground member 14C. The case 30 has a pair of insertion holes 312 and a ground insertion hole 313 formed in the connection surface 311. The pair of blade receiving members 14A and 14B are housed in the case 30, and are electrically connected to the pair of blades 102A and 102B inserted along the first direction Z from the pair of insertion holes 312. The grounding member 14C is housed in the case 30 and is electrically connected to the grounding blade 102C inserted along the first direction Z from the grounding insertion hole 313. In the grounding blade 102C, the insertion amount from the connection surface 311 is larger than the pair of blades 102A and 102B by a predetermined amount L0. Each of the pair of blade receiving members 14A and 14B has a pair of blade receiving pieces 141A and 142A (or 141B and 142B) facing each other in a second direction Y orthogonal to the first direction Z. Each of the pair of blade receiving members 14A, 14B is located between the pair of blade receiving pieces 141A, 142A (or 141B, 142B) at the power pole holding portion 115 located at the first distance L1 from the connection surface 311 in the first direction Y. It is configured to sandwich the blade 102A (or 102B). The grounding member 14C has a pair of grounding pieces 141C and 142C facing each other in a third direction X orthogonal to both the first direction Z and the second direction Y. The grounding member 14C is configured such that the grounding blade 102C is sandwiched between the pair of grounding pieces 141C and 142C at the grounding pole holding portion 125 located at a second distance L2 from the connection surface 311 in the first direction Z. The second distance L2 is larger than a value obtained by adding a predetermined amount L0 to the first distance L1. In the first direction Z, the third distance L3 from the pair of grounding pieces 141C and 142C to the connection surface 311 is less than the value obtained by adding the predetermined amount L0 to the fourth distance L4 in each of the pair of grounding pieces 141C and 142C. It is. The fourth distance L4 here is a distance from the pair of blade receiving pieces 141A, 142A (or 141B, 142B) to the connection surface 311 in the first direction Z.

  According to this configuration, since the second distance L2 is larger than the value obtained by adding the predetermined amount L0 to the first distance L1, the plug blades 102A, 102A, 102B arrives at the power pole holding unit 115. Therefore, when the plug 100 is connected, before the grounding blade 102C is sandwiched between the first grounding piece 141C and the second grounding piece 142C, the blade 102A (or 102B) is connected to the first blade receiving piece 141A (or 141B). And the second blade receiving piece 142A (or 142B). Therefore, in the outlet 3, the grounding blade 102C is held by the grounding member 14C despite the insufficient contact between the blades 102A and 102B and the blade receiving members 14A and 14B such as a so-called point contact state. Can be prevented. Therefore, in the outlet 3, there is an advantage that the possibility that the plug blades 102A and 102B are used in a state where the contact between the blade receiving members 14A and 14B is insufficient is reduced. Further, the third distance L3 is less than a value obtained by adding a predetermined amount L0 to the fourth distance L4 in each of the first grounding piece 141C and the second grounding piece 142C. Therefore, the grounding blade 102C contacts the ground member 14C before the blades 102A and 102B contact the blade receiving members 14A and 14B. Therefore, even if the plug 100 is inclined and the grounding blade 102C is inclined with respect to the first direction Z, the grounding blade 102C is grounded earlier than the blades 102A and 102B. It is possible to contact the member 14C.

  As in the present embodiment, the outlet 3 is housed in the case 30 and has a closed position that covers the grounding member 14C when viewed from the grounding insertion hole 313, and an open position that exposes the grounding member 14C when viewed from the grounding insertion hole 313. It is preferable to further include a grounding door body 15 </ b> C that moves between the positions. In this case, the grounding member 14C preferably includes a first grounding piece 141C and a second grounding piece 142C as a pair of grounding pieces 141C and 142C. In this case, the grounding door body 15C is disposed on the side opposite to the second grounding piece 142C in the third direction X with respect to the first grounding piece 141C, and moves between the closed position and the open position along the third direction X. Preferably, it is configured to move between. In this case, the grounding member 14C preferably further includes a pair of grounding stoppers 126 protruding from both end edges of the first grounding piece 141C in the second direction Y. In this case, it is preferable that the case 30 is formed with a pair of grounding restricting portions 310 and 321 facing the pair of grounding stoppers 126 in the third direction X. In this case, the movable range of the first grounding piece 141C in the direction away from the second grounding piece 142C in the third direction X is limited by the pair of grounding stoppers 126 coming into contact with the pair of grounding restriction portions 310 and 321. It is preferable that it is comprised as follows. According to this configuration, when the plug 100 is connected to the outlet 3, even if a large external force is applied to the plug 100 in a direction crossing the first direction Z, an “abnormal opening” occurs in the grounding member 14C. Hateful. Therefore, there is an advantage that the reliability of the outlet 3 is not easily reduced. In addition, since the grounding door body 15C is provided, intrusion of foreign matter from the grounding insertion hole 313 into the case 30 when the plug 100 is not connected is prevented, thereby also lowering the reliability of the outlet 3. Is suppressed. Here, since the pair of grounding stoppers 126 protrude from both end edges of the first grounding piece 141C in the second direction Y, it is possible to prevent “abnormal opening” without interfering with the grounding door body 15C. However, this configuration is not essential for the outlet 3, and the pair of grounding stoppers 126 and the pair of grounding restriction portions 310 and 321 may be omitted as appropriate.

  Further, as in the present embodiment, it is preferable that the connection surface 311 is a flat surface and does not have a structure for holding the plug body 101 from which the pair of blades 102A and 102B and the grounding blade 102C protrude. According to this configuration, since there is no structure for holding the plug body 101 on the connection surface 311, the structure of the case 30 can be simplified. When there is no structure for holding the plug body 101 on the connection surface 311, the plug 100 is inclined and easily inserted with respect to the first direction Z. However, in the outlet 3 of the present embodiment, the plug 3 is earlier than the plug blades 102A and 102B. And the grounding blade 102C can contact the grounding member 14C. However, this configuration is not essential to the outlet 3, and the connection surface 311 may have a structure that holds the plug body 101.

(5) Modification The wiring device 10 according to the above embodiment is merely an example of the present invention, and the present invention is not limited to the above embodiment, and the present invention is applicable to other embodiments. Various changes can be made according to the design and the like within a range not departing from the technical idea according to the above. Hereinafter, modified examples of the above embodiment will be listed.

  The wiring device 10 is not limited to an outdoor device, and may be an indoor device used inside a building. In addition, the outlet 3 is not limited to having a ground electrode, and may be without a ground electrode. For example, an outlet (Outlet) for AC 200 V or DC may be used. Further, the outlet 3 is not limited to the A-type outlet, and may be an outlet to which a plug having a pin-shaped plug blade can be connected, such as a B-type or C-type outlet. The outlet 3 is not limited to a two-port type outlet, and may be, for example, a one-port type or a three-port type outlet. Further, the outlet 3 is not limited to a single outlet, and may be a combination of, for example, a human sensor, a timer, a switch, and the like. Further, the terminal portion 180 may not be a quick connection terminal, and may be, for example, a screw terminal.

  The wiring device 10 is not limited to a configuration in which the entirety is installed on a wall in an exposed state (exposed installation type), but is a configuration in which a rear portion is embedded in a wall (embedded installation type). Is also good.

  The glitter pigment contained in the flame-retardant resin used as the material of the cover body 6 is not limited to aluminum flake, but may be metal powder other than aluminum, such as gold or silver, or mica or glass flake. Pigment other than metal powder such as

  Further, the cover 2 is not limited to non-painting (no painting), and at least a part of the cover 2 may be painted.

  Further, the main wall portion 60 may not include the front wall 601 and the upper wall 602, and for example, the main wall portion 60 may include only the front wall 601 or only the upper wall 602.

  In addition, the wiring device 10 may be an outlet device having a lock mechanism for preventing the plug from coming off. The locking mechanism may be, for example, a method of preventing the plug blade (or pin) of the plug from coming off by rotating the plug, or by removing a plug provided by hooking a projection or the like provided on the wiring device 1 onto the plug. Stopping may be used.

3 outlet 14A (first) blade receiving member 14B (second) blade receiving member 14C grounding member 15C grounding door body 30 case 101 plug body 102A (first) blade 102B (second) blade 102C grounding Plug blade 115 Power pole holding unit 125 Ground pole holding unit 126 Ground stopper 141A, 141B (First) Blade receiving piece 141C First grounding piece 142A, 141B (Second) Blade receiving piece 142C Second grounding piece 310, 321 Grounding restriction Part 311 connection surface 312 insertion hole 313 ground insertion hole L0 predetermined amount L1 first distance L2 second distance L3 (third) distance L4 (fourth) distance X third direction Y second direction Z first direction

Claims (3)

A case in which a pair of insertion holes and a ground insertion hole are formed on the connection surface,
A pair of blade receiving members housed in the case and electrically connected to a pair of blades inserted along the first direction from the pair of insertion holes,
A grounding member housed in the case and electrically connected to a grounding blade inserted along the first direction from the grounding insertion hole,
In the grounding blade, the insertion amount from the connection surface is larger than the pair of blades by a predetermined amount,
Each of the pair of blade receiving members has a pair of blade receiving pieces opposed to each other in a second direction orthogonal to the first direction, and a power pole holding at a first distance from the connection surface in the first direction. Is configured to sandwich the plug blade between the pair of blade receiving pieces at the portion,
The grounding member has a pair of grounding pieces facing each other in a third direction orthogonal to both the first direction and the second direction, and a grounding electrode located at a second distance from the connection surface in the first direction. The holding portion is configured to sandwich the grounding blade between the pair of grounding pieces,
The second distance is greater than a value obtained by adding the predetermined amount to the first distance,
In the first direction, the distance from the pair of grounding pieces to the connection surface is obtained by adding the predetermined amount to the distance from the pair of blade receiving pieces to the connection surface in any of the pair of grounding pieces. An outlet characterized by being less than the value. A grounding door body housed in the case and moving between a closed position that covers the grounding member as viewed from the grounding insertion hole and an open position that exposes the grounding member as viewed from the grounding insertion hole. In addition,
The grounding member has a first grounding piece and a second grounding piece as the pair of grounding pieces,
The grounding door body is disposed on the opposite side of the first grounding piece from the second grounding piece in the third direction, and is disposed between the closed position and the open position along the third direction. It is configured to move with
The grounding member further has a pair of grounding stoppers protruding from both end edges of the first grounding piece in the second direction,
In the case, a pair of grounding restriction portions facing the pair of grounding stoppers in the third direction is formed,
The first grounding piece is configured such that a movable range in a direction away from the second grounding piece in the third direction is limited by the pair of grounding stoppers being in contact with the pair of grounding restriction portions. The outlet according to claim 1, wherein: The outlet according to claim 1 or 2, wherein the connection surface is a flat surface and does not have a structure for holding a plug body from which the pair of blades and the grounding blade protrude.

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