JP3050845B2 - Waterproof outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof outlet.

[0002]

2. Description of the Related Art Conventional waterproof outlets that can be grounded include those disclosed in Japanese Patent Publication No. 61-45357 and Japanese Patent Laid-Open Publication No. Sho 62-2475. There is no blade insertion hole for the power plug with terminal or ground electrode blade.

[0003]

Therefore, in these conventional examples, there is a problem that it is impossible to connect an electric device which needs to be grounded. In addition, it is premised that the waterproof outlet is provided outdoors, and there is a problem that the power cord is easily pulled out by a person touching the power cord or catching an object on the power cord.

[0004] The invention of claim 1 has been made in view of the above problems, and it is an object of the invention to provide an electric device having a power plug with a ground pin, an electric device derived from a ground wire, and a ground. It can be connected while taking it, and it can prevent the intrusion of rainwater when not in use,
It is still another object of the present invention to provide a waterproof outlet that suppresses rainwater from splashing onto a plug connection portion.

Another object of the present invention is to prevent the power plug from being unplugged even outdoors where the power cord is often inadvertently pulled, so that the waterproof power cord can be used safely. To provide an outlet.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a first opening opening on the side of the erection material and a second opening opening on one surface perpendicular to the erection material side. A case in which bulging portions each having an opening are formed, and a hood for avoiding rain is provided around the second opening;
A waterproof packing which is fitted to the first opening to prevent infiltration of rainwater, a body, a cover which is attached to the body, and which is attached to an opening formed with the cover attached to the body; is formed in the front cover, the first wire insertion hole provided on a surface of the body corresponding to the opening portion side, the front cover facing the second opening side when accommodated in the bulging portion And an outlet body provided with at least a pair of power blade insert holes and a ground electrode blade insert hole, respectively, and a separating piece provided on the back surface of the front cover for separating the pair of power blade insert holes from each other. And a pair of power receiving blade receiving springs provided with a terminal portion composed of a locking spring and a terminal plate housed in the outlet body, and a ground electrode provided with an earth terminal portion composed of the locking spring and the terminal plate. Blade support spring, the front cover and the power supply blade support. A door which is separately disposed between the front cover and the front cover and the ground electrode blade receiving spring, and is urged in a direction to close a blade insertion hole corresponding to each blade receiving spring; A ground terminal is provided on a plate portion of the case corresponding to the position of the protruding portion, and a lead plate for connecting the ground terminal and the ground terminal portion is provided.

According to the second aspect of the present invention, the blade receiving spring for a power supply is
A stopper blade receiving panel, is characterized in that the blade receiving spring grounding electrode also receiving panel corresponding to the retaining blade receiving springs. According to the first aspect of the present invention, the ground wire of the ground terminal blade spring and the ground terminal can be simultaneously formed simply by connecting the electric wire to the ground terminal.

[0008] Even in the case of a device such as a microwave oven or a washing machine using a plug having no ground electrode plug blade,
By connecting the ground wire to the ground terminal, the equipment can be grounded and an electric shock accident can be prevented. As a waterproof outlet to be installed outdoors, waterproof packing can prevent infiltration of rainwater into the inside, and a hood can prevent rainwater from splashing on the plug connection site. Furthermore, the door can prevent dust and rainwater from entering from each blade insertion hole when not in use, and by urging the door in the closing direction, the blade insertion hole can be closed at the time of plug connection. The openings can be reduced to prevent dust and rainwater from entering as much as possible. In addition, since the doors are separately arranged, the plug hole for the ground electrode that is not used when the plug without the blade for the ground electrode is used can be closed with the door. Dust and rainwater can be prevented from entering.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the plug to be used can be easily prevented from coming off irrespective of the presence or absence of the ground electrode plug blade, and the cord from the electric device can be easily connected. Suitable for waterproof outlets that are often used outdoors, where they are often caught on feet.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. 1 to 6 show one embodiment of the present invention. The outlet according to the present embodiment is mounted on an outdoor wall A as shown in FIG. 2, and has blade receiving springs 6 ₁ and 6 ₂ for connecting a power plug of a power plug therein, and a plug for ground electrode ( The blade receiving spring 6 for connecting the ground pin in the embodiment).
₂ and a plurality of connection terminals 7 having a quick-connecting terminal structure for connecting a power supply line and a ground line to the blade receiving springs 6 _{1 to} 6 ₃ , and a case 2 for accommodating the outlet main body 1. Become. In addition, the front-back relation and the vertical relation in the following description will be described based on the illustrated state of FIG. Therefore, the upper and lower sides in FIG. 1 are reversed, and the right direction in the figure is forward.

Next, each configuration will be described with reference to FIG. The outlet main body 1 can be connected to two types of power plugs with and without a ground electrode plug blade (hereinafter referred to as an earth pin) in the description of the embodiment. A body 3 having a part 7 incorporated therein and having an open upper surface and a front surface; a cover 4 attached to the upper surface of the body 3 and having an open lower surface and a front surface;
And a front cover 5 attached to a front opening that is opened with the cover 4 attached.

Although not shown, the inside of the body 3 is separated into front and rear storage portions by partition walls, the blade receiving spring 6 is stored in the front storage portion, and the rear storage portion further has three storage chambers in the left-right direction. And the components of the connection terminal portion 7 for connecting the power supply line and the ground wire of the power supply line to each of the storage chambers are stored. Two electric wire insertion holes 30 for inserting a power supply line and a ground wire into the storage room are formed in the bottom surface of the storage room for the components of each connection terminal portion 7 from the lower surface side, respectively. 31 is perforated. On both sides of the body 3, there are formed mounting pieces 33 each having a through hole 32 through which a fixing screw 38 for fixing the outlet main body 1 to the case 2 is inserted.

The cover 4 includes a storage section 40 and a storage chamber 41 corresponding to each storage section or storage chamber of the body 3.
2 are formed separately. The inner bottom surface of the storage section 40 is an obliquely upwardly inclined surface, and a plurality of projections 44 are arranged in the center of the inner bottom surface in the left-right direction. Note that the bottom surface of the storage portion of the blade receiving spring 6 (not shown) of the body 3 is inclined obliquely downward, so that the storage of the blade receiving spring 6 formed when the cover 4 is attached to the body 3 is stored. The part has a wider space in front. Also, a plurality of protrusions similar to the cover 4 are formed on the bottom surface of the storage portion of the blade receiving spring 6 of the body 3. Fitting holes 43 are drilled in the partition walls 42 on both sides of the center of the cover 4. Fitting projections projecting from the body 3 are fitted into the fitting holes 43, and the cover 4 is attached to the body 3. It can be positioned and attached.

The front cover 5 is attached from the front with the cover 4 attached to the body 3, and has flat separation pieces 50 and 51 projecting from the back. The separation piece 50 separates the storage portion of the blade receiving spring 6 formed when the cover 4 is attached to the body 3 from left to right. One storage space separated by the separation piece 50 is narrow, and the other storage space is small. The storage section is wide, and the narrow storage space is referred to as a side storage section in the following description. The larger storage space is vertically separated by a separation piece 51, and the storage spaces separated by the separation piece 51 are referred to as an upper storage section and a lower storage section, respectively. Here, the blade receiving springs for connecting with the blade receiving springs 6 ₁ power supply plug pins each power plug is connected to the upper and lower housing portions, 6 ₂ is accommodated, a ground pin of the power plug to the side housing portion 6 ₃ is housed. A flange piece 55 is provided around the outer peripheral surface of the front cover 5 slightly behind the front surface, and the outer periphery of the opening side when the cover 4 is attached to the body 3 at the four corners on the rear surface of the flange piece 55. A holding rib 54 for holding the surface in a wrapping manner is formed. On the front surface of the front cover 5, a blade insertion hole 52 for inserting a blade of a power plug is formed corresponding to the upper and lower storage portions, and a ground pin for inserting an earth pin corresponding to the side storage portion. A blade insertion hole (hereinafter referred to as a pin insertion hole in the description of the embodiment) 53 is formed, and the respective insertion holes 52, 5 are provided.
Numeral 3 is formed in an arc shape so that the inserted blade and earth pin can be rotated by a predetermined angle.

The blade receiving springs 6 ₁ and 6 ₂ housed in the upper and lower housings respectively have power supply blades inserted through two power supply blade insertion holes 52 formed at the top or bottom of the front cover 5. two blade receiving portions 60 ₁ to receive in a form sandwiching the plug pins of the plug Yes formed integrally, the blade receiving portion 60 ₁ of the tip shape of each is formed in an arc shape to match the shape of the blade insertion holes 52 A locking dowel is formed to prevent the blade from coming off when the blade is rotated. That is, the blade receiving springs 6 ₁ , 6 ₂
Constitutes a retaining blade receiving spring. Also, the blade receiving springs 6 ₃ accommodated in the side housing portion includes a blade receiving portion 60 ₂ for receiving in a form sandwiching the earth pin.

The connection terminal portion 7 has a so-called quick-connecting terminal structure, and is housed in a form that covers the pair of lock springs 70, release buttons 71, and lock springs 70 respectively housed in the storage chambers of the body 3. It comprises a U-shaped terminal plate 72 housed in the room, and elastically clamps a core wire of a power supply line inserted from the wire insertion hole 30 drilled in the bottom surface of the housing room between the locking spring 70 and the terminal plate 72. And then connect. Then, when disconnecting the power line, the release button 71 is pushed through the release hole 31 and the release button 7 is released.
By pressing the locking spring 70, the locking spring 70 acts to separate the locking spring 70 from the core wire of the power line, and the power line is pulled out. The connection terminal 7 for connecting the ground line of the power supply line has the same structure. The color of the release button 71 'of the connection terminal part 7 is made different from the color of the release button 71 of the other connection terminal part 7 so that the connection terminal part 7 can be clearly distinguished from the other connection terminal parts 7. The terminal plate 72
From extends respectively connecting pieces 73, it is connected caulked to the blade receiving spring ₆₁ through ₃ respectively corresponding to this connection piece 73.

The case 2 has a box-like shape whose lower surface (the side of the mounting surface to the wall surface A) is open.
The outlet body 1 is housed inside. In addition, the side surface shape of the bulging part 20 is a substantially triangular shape having a raised front, and the front surface shape is rectangular, and the front surface is open. And
A U-shaped hood 21 for preventing rain which covers the front of the opening is attached to the opening edge. On both sides of the inner bottom surface of the bulging portion 20, a boss 261 having a screw hole 25 for fixing the outlet main body ₁ is formed. A hole 27 for exposing a screw portion 62 integrally formed with a lead plate 61 described later is formed on the upper surface of a front portion of the case 2, and a positioning groove for the lead plate 61 is formed on the inner bottom surface of the front portion. A pair of convex ribs 28
It is formed with. In the center of the front part of the case 2, an insertion hole 29 for passing the fixing screw 24 is formed.
A boss 26 ₂ is formed at the rear end of the inner bottom surface of the boss 26, and a through hole 2 through which the fixing screw 24 passes through the boss 26 ₂ from the top surface.
3 and a fixing screw 39 is screwed through the insertion hole 24 and the through hole 23 to thereby form a wall surface A of the outlet.
Attach to.

One end of the lead plate 61 is bent into a U-shape to project upward, and a screw hole 6 is formed in a central piece of the U-shape.
9 forms a threaded portion 62 having a perforated hole. An earth screw 64 shown in FIG. 2 is screwed into the threaded portion 62, and the screw terminal 62 and the earth screw 64 constitute an earth terminal. , Are arranged on the plate portion of the case 2. This is the upper surface sides of the engagement portion 62 forms an arcuate retainer pieces 63, when screwed ground screw 64 in the threaded portion 62 for connecting the ground wire, the ground wire grounding screw 6 4 And the screw portion 62 can be easily held. In addition,
On both sides of the screw portion 62, an insertion hole 66 for a fixing screw 65 for fixing the lead plate 61 to the case 2 and a notch 67 are provided.
Is formed. A central portion of the lead plate 61 is bent in a plurality of steps, and a wedge-shaped claw 68 projecting toward the outlet main body 1 is formed at one end of the other T-shaped tip. That is, in this embodiment, the lead plate 61 is used to connect to the ground connection terminal 7 of the outlet main body 1. For this reason, the connection terminal portion 7 of the body 3 is provided with a storage chamber having the same shape as the other connection terminal portions 7 and the lead plate connection terminal portion 7 for connecting the claw 68 of the lead plate 61. 'A storage chamber for storing the components that make up the' is formed. In this storage chamber, a lock spring 70 'and a terminal plate 72' integrally formed with the terminal plate 72 are stored. An insertion hole 30 'for inserting the claw piece 68 of the lead plate 61 is formed in the bottom surface of the storage chamber.

Further, the outlet of the present embodiment has a structure in which the blade insertion hole 52 and the pin insertion hole 53 of the outlet main body 1 are closed when the blade or the ground pin is not inserted.
To this end, a door 34 that closes the blade insertion hole 52 and a leaf spring 35 that resiliently opens the door 34 to close the blade insertion hole 52 when the blade is not inserted are provided. The leaf spring 35 is fixed by a projection (a projection 44 in the case of the cover 4) projecting from the front storage portion of the body 3 and the cover 4, and forms an elastic piece 36 that resiliently opens the door 34 by cutting and raising. The door 34 is interposed between the leaf spring 35 and the blade receiving spring 6, and a closing piece 37 for closing the blade insertion hole 52 is formed at the tip, and a surface of the closing piece 37 facing the blade receiving spring 6 side. Is formed on a tapered surface inclined toward the insulating piece 51 of the front cover 5 toward the back so that the blade can be smoothly introduced. When the power plug is not inserted with the blade, the closing piece 37 contacts the insulating piece 51 and closes the blade insertion hole 52. The pin insertion hole 53 can be closed when not in use in substantially the same manner.
And a leaf spring 35 '. In the blade receiving spring 6 ₃ parts of grounding, as shown in FIG. 5, the slide insert from above the leaf spring 35 'in a pair of slide grooves 48 formed to face the side surface of the front housing portion of the body 3 To fix it. This makes it easy to attach the leaf spring 35 'to a predetermined position. It is particularly effective in automatic assembling if the insertion direction of the leaf spring 35' matches the assembling direction. There is also an advantage that the size of the leaf spring 35 'can be reduced as compared with the case where the rib is press-fitted into the convex rib 44. Further, in order to position the door 34 'for closing the pin insertion hole 53 of the ground pin, as shown in FIG. 4, a door 35' is provided in a side storage portion formed when the body 3 is covered with the cover 4. The guide portion 46 is formed by holding the both surfaces perpendicular to the operating direction of the door 35 with a slight gap therebetween so as to reduce the rattling of the door 35 '. However,
When the guide portion 46 is formed over the body 3 and the cover 4 as in the present embodiment, the body 3 and the cover 4 are formed.
In order to prevent the malfunction of the door 35 'due to warping deformation of the door 35', the guide pin 46 is tapered on the side of the pin insertion hole 53 of the ground pin, and the width is increased toward the insertion side. It is. As described above, in this embodiment, since the doors 35 and 35 'for closing the pin insertion hole 53 when the pin insertion hole 53 is not inserted are provided, water does not intrude from the pin insertion hole 53 and foreign matter does not enter. As shown in FIG. 6, a leaf spring 35 'is inserted and integrally formed to form an elastic piece 39.
May be formed as a door 34 '' in which the elastic piece 39 is integrally formed of a molding material.

Hereinafter, the procedure for assembling the outlet will be briefly described. First, the lower leaf spring 35, the ground leaf spring 35 ', the locking spring 70, the release button 71, and the blade receiving spring 6 in which the terminal plate 72 are integrated are incorporated into the body 3, and then the upper cover 4 is mounted on the cover 4. The cover 4 is attached to the body 3. Each door 34 in this state, 'the leaf spring 35, 35' 34 interposed between the blade receiving spring ₆₁ through _3, then the insulation piece 50, 51 the blade receiving spring ₆₁ through ₃ of each The front cover 5 is attached so as to be inserted therebetween. The outlet main body 1 assembled in this manner is inserted from the lower surface of the case 2 into the bulging portion 20.
Of the outlet body 1 is fixed to a predetermined position by fitting the front cover 5 of the
Is screwed into the screw hole 25 of the boss 26 ₁ of the case 2 to complete the mounting of the outlet main body 1 to the case 2, and at this time, the cover 4 and the front cover 5 are interposed between the body 3 and the case 2. It is clamped and fixed. The front cover 5
The flange 55 prevents the bulging portion from falling out of the opening. In this state, the threaded portion 62 of the lead plate 61 is exposed from the hole 27, and the claw 68 is inserted into the insertion hole 30 ′ to connect the lead plate 61 to the connection terminal portion 7. Fix to case 2. Then, when the ground screw 64 is screwed into the screw portion 62 from the front side of the case 2, the assembly of the outlet is completed. In the above description, the lead plate 61 is fixed with a screw. However, the lead plate 61 may be fixed with a driving stud, which is particularly advantageous for automatic assembly. Further, in the above-described case, the screw is fixed on both sides of the screw portion 62 of the lead plate 61. However, the insertion hole 22 into which the tip of the lead plate 61 is inserted is formed in the case 2, and the screw is fixed by one. If it is a location, assembly becomes easier.

When this outlet is mounted on the wall A, the outlet is mounted so that the front surface of the front cover 5 faces downward. In this case, the waterproof packing 8 is further fitted to the lower surface of the case 2 and the mounting frame 9 is used. The waterproof packing 8 has a groove formed on the outer peripheral edge of the upper surface thereof for fitting a rib 2a provided on the lower surface of the case 2 and is fixed to the case 2 by fitting the rib 2a into the groove. A rectangular opening 80 is formed in a portion of the waterproof packing 8 corresponding to the electric wire insertion hole 30 and the release hole 31 of the body 3 so that a power supply line or the like can be connected from the lower surface side.
4 is formed. The mounting frame 9 is rectangular and is mounted on the wall A by screwing a box screw through a mounting hole 90 into an embedding box buried in the wall A. The outlet is screwed into a screw hole 91 of the mounting frame 9. 24 is attached by screwing.

[0022]

According to the first aspect of the present invention, only by connecting the electric wire to the ground terminal, the blade receiving spring for the ground electrode and the ground wiring of the ground terminal can be simultaneously performed. Even when using a plug that does not have a grounding blade, for example, a microwave oven or a washing machine, connect the ground wire to the ground terminal to ground the device and prevent electric shock. Can be. Also facing the second opening side
The front cover is in contact with at least a pair of power blade insert holes.
And a front cover, wherein
To separate the pair of power supply blade insertion holes from each other
Because it has an outlet body with separate pieces,
Each power plug can be separated by a separate piece on the back
Ensure insulation between the blade receiving springs facing the blade insertion holes.
Can be.

As a waterproof outlet installed outdoors, the waterproof packing can prevent rainwater from entering inside, and the hood can prevent rainwater from splashing on the plug connection site. In addition, the door can prevent dust and rainwater from entering from each blade insertion hole when not in use, and by urging the door in the closing direction, the opening of each blade insertion hole can be opened when the plug is connected. Minimizes dust and rainwater as much as possible, and because the doors are separately arranged, it is not used when using a plug without a ground electrode plug blade. The insertion hole can be closed by a door, and dust and rainwater can be prevented from entering from the insertion hole for the ground electrode plug blade.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the plug to be used can be easily prevented from coming off regardless of the presence or absence of the grounding electrode plug blade, and the cord from the electric equipment can be easily removed. Suitable for waterproof outlets that are often used outdoors, where they are often caught on feet.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a main structure of the above.

FIG. 3 is a partially broken perspective view of the same.

FIG. 4 is a sectional view showing a door and a positioning structure according to the first embodiment;

FIG. 5 is a sectional view showing a supporting structure of the above-mentioned leaf spring.

FIG. 6 is a perspective view of a door that does not require a leaf spring according to the first embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Outlet main body 2 Case 3 Body 4 Cover 5 Front cover 6 _{1 to} 6 ₃ Blade receiving spring 7 Connection terminal 21 Hood 52, 53 Plug blade insertion hole 61 Lead plate 62 Threaded portion 70 Lock spring 72 Terminal plate

Continuation of the front page (56) References Japanese Utility Model Sho 54-5793 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/52 301 H01R 13/52 H01R 13/52 302 H01R 13/652

Claims (2)

(57) [Claims] A hood for preventing rain is formed while forming a bulging portion having a first opening opening on a side surface of the building material and a second opening opening on one surface orthogonal to the side surface of the building material. A case provided around the second opening, a waterproof packing attached to the first opening to prevent rainwater from entering, a body, a cover attached to the body, and the cover covered by the body; An electric wire insertion hole is formed on a surface of the body corresponding to the first opening when the front cover is attached to an opening formed in a worn state and is accommodated in the bulging portion. At least a pair of power blade insert holes and a ground electrode blade insert hole are respectively provided in the front cover facing the second opening side, and a pair of power blade insert holes are provided on the back surface of the front cover. An outlet body provided with a separating piece for separating the A pair of power blade receiving springs provided with a terminal portion composed of a locking spring and a terminal plate housed in the outlet body, and a ground electrode blade provided with an earth terminal portion composed of the locking spring and the terminal plate. A receiving blade, a plug blade insertion hole that is separately arranged between the front cover and the power blade receiving ridge and between the front cover and the ground electrode blade receiving ridge and that corresponds to each blade receiving spring. A door urged in a direction to close the ground, a ground terminal provided on the plate portion of the case corresponding to the position of the bulging portion, and a lead plate connecting the ground terminal and the ground terminal portion. A waterproof outlet characterized by that. 2. The blade receiving spring for a power source is a retaining blade receiving spring, and the blade receiving spring for a ground electrode is a receiving corresponding to the retaining blade receiving spring. Waterproof outlet.