JP2003249298A - Embedded plug socket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the height dimension of an instrument body exposed from a construction surface to appear neatly. <P>SOLUTION: The embedded plug socket is constructed by a cover 10, a body 20, a fitting frame 30 and a plate 40. The fitting frame 30 is fitted to a mount 23 of the body 20 by fixing segments 35 formed in bending at free ends of a pair of arm segments 32 of the fitting frame 30. At this time, a nut 79 fitted into a fitting concave portion 23b of the mount 23 is clipped between the fixing segments 35 of the fitting frame 30 and the body 20. In other words, since a tapped hole, into which a fitting screw 78 is fitted, is not provided in the fitting frame 30, the length dimension of the arm segment 32 of the fitting frame 30 can be enlarged compared with a prior art example. Therefore, a distance from the front surface of the fitting frame 30 to the front surface of the body 20 can be enlarged compared with a prior art example, so that a height dimension of an instrument body 1 exposed from a construction surface can be reduced compared with a prior art example to look nice. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded outlet which is arranged in such a manner that a rear portion of a container is inserted into an embedded hole provided on a construction surface.

[0002]

2. Description of the Related Art As an outlet of this type, as shown in FIGS. 24 and 25, a recess 11 'into which a plug is fitted is provided on the front surface, and a round pin of the plug is inserted into the bottom surface of the recess 11'. A body 20 that holds a cover 10 'having a pin insertion opening 11a' and a blade receiving portion (not shown) for receiving a round pin inserted in the pin insertion opening 11a 'and is joined to the cover 10' from the rear side. ', And a mounting frame 30' for mounting a body consisting of the cover 10 'and the body 20' on the embedding box (not shown) mounted on the body 20 'and embedded in the embedding hole. , Mounting brackets (not shown) that attach the mounting frame 30 'to the construction material or the embedding box by making the claws formed on the tip end bite into the construction material or the embedding box embedded in the embedding hole, and Insert through the screw insertion hole drilled in the metal fitting. And a screw (not shown), which is inserted through the mounting screw into the screw insertion hole screw hole 35 to be screwed 'is mounting frame 30' provided in is provided conventionally. In addition, 40 'in FIG. 24 is a plate for covering the front surface of the mounting frame 30'.

As shown in FIG. 26, the mounting frame 30 'is formed by punching a metal plate into a substantially square shape having a substantially circular mounting window 31' opened at the center thereof. A pair of leg pieces 32 ′ are extended toward each other. In addition, a fixing portion for fixing the mounting frame 30 'to the body 20' and a screw hole 35 'into which the mounting screw is screwed are formed at the tip of each leg piece 32'.

[0004]

By the way, the leg pieces 32 'are provided.
Is regulated by the diameter of the mounting window 31 ', and if the screw hole 35' into which the mounting screw is screwed is provided in the mounting frame 30 ', the length of the leg piece 32' is increased. I can't take it. On the other hand, since the length of the round pin of the plug is constant, when the length of the leg piece 32 'cannot be made large, the cover 10' is projected forward to meet the length of the round pin. It is necessary to secure a distance between the cover 10 'and the body 20'. Therefore, as shown in FIG. 24, the height dimension of the outlet exposed on the construction surface (cover 1
0'is a projecting dimension) B ', which projects forward from the construction surface, is large, and the appearance is not good.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an implantable outlet in which the height dimension of the body exposed on the construction surface is made small and the appearance is improved. is there.

[0006]

In order to achieve the above object, the invention of claim 1 is an embedded type outlet which is arranged in such a manner that the rear part of the body is inserted into an embedded hole provided in a construction surface. And a cover having a concave portion on the front surface where the plug is fitted and having a pin insertion opening through which the round pin of the plug is inserted, and a round pin inserted into the pin insertion opening A body that holds the blade receiving part and is joined to the cover from the rear side, and a mounting frame that attaches the body consisting of the cover and the body to the embedding box that is attached to the body and embedded in the embedding hole by using box screws. , The mounting bracket that attaches the mounting frame to the construction material or the embedding box by making the nail formed on the tip part dig into the construction material or the embedding box embedded in the embedding hole, and the screw insertion hole drilled in the mounting metal fitting. A mounting screw that is inserted into the hole, The mounting frame is provided with a nut into which the mounting screw inserted between the disk and the mounting frame and inserted into the screw insertion hole is screwed, and the mounting frame is not provided with a screw hole into which the mounting screw is screwed. Therefore, the distance from the front surface of the mounting frame to the front surface of the body can be set larger than that of the conventional example, and the height dimension of the body exposed on the construction surface can be reduced to improve the appearance.

The invention of claim 2 is characterized in that, in the invention of claim 1, a recess is provided in the cover to allow the head of the box screw to escape, and the interference between the box screw and the cover is suppressed while suppressing a decrease in strength of the cover. Can be prevented.

According to a third aspect of the present invention, in the first aspect of the present invention, the rear portion of the cover is provided with a relief portion for escaping the head portion of the mounting screw. Interference can be prevented.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the grounding electrode exposed on the side surface of the plug is provided, which has a contact piece that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess. A ground blade receiving portion for receiving is provided, and the ground blade receiving portion is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the ground blade receiving portion. The isolation wall that separates the space is projected from the front surface of the body, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving part is opened between the isolation wall and the ground blade receiving part. It is characterized in that a locking projection for locking the body is provided at an outer end portion of the blade receiving portion with respect to the ground wire insertion opening, and the insulation distance between the ground blade receiving portion and the blade receiving portion can be increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a pair of contact pieces that are capable of advancing and retracting in the recess through a slit provided on the peripheral surface of the recess are provided and are exposed on the side surface of the plug. The grounding blade receiving portion for receiving the grounding electrode of the grounding blade is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the grounding blade receiving portion. The isolation wall that isolates the blade receiving portion from the front surface of the body is projected, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving portion between one isolation wall and the ground blade receiving portion. Is open at both ends, and the ground wire insertion port is open only at one end between the other isolation wall and the ground blade receiving part.
A locking projection for locking the body is provided at the outer end of one blade receiving part with respect to the ground wire insertion port, and the other blade receiving part is provided at the end of the isolation wall where the ground line insertion port is not open. It is characterized in that a locking projection for locking is provided, and the insulation distance between the ground blade receiving portion and the blade receiving portion can be increased, and the pair of blade receiving members can be made to have the same shape so that parts can be shared.

The invention of claim 6 is characterized in that, in the invention of claim 4 or 5, locking ribs for locking the blade receiving portion are provided on the body, and the strength of fixing the blade receiving portion to the body is improved. To do.

According to a seventh aspect of the present invention, in the first aspect of the present invention, a grounding electrode exposed on a side surface of the plug is provided, which has a contact piece that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess. A ground blade receiving portion for receiving is provided, and the ground blade receiving portion is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the ground blade receiving portion. The isolation wall that separates between the two is projected on the front surface of the body, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving part is opened between the isolation wall and the ground blade receiving part to make the grounding. A notch is provided in a portion of the blade receiving portion facing the electric wire insertion opening, which facilitates insertion of the ground wire into the electric wire insertion opening.

The invention of claim 8 is characterized in that, in the invention of claim 7, notches are provided on both sides of the ground blade receiving portion facing the wire insertion port, and the ground wire is provided at any of the wire insertion ports. Is easier to insert.

A ninth aspect of the present invention is characterized in that, in the first aspect of the present invention, the mounting frame is provided with a rotation preventing claw that cuts into the building surface to prevent the mounting frame from rotating, and the box screw is tightened. It is possible to prevent the mounting frame from rotating when it is turned on.

The invention of claim 10 is characterized in that, in the invention of claim 9, a rotation preventing claw is provided at a corner portion of a mounting frame formed in a substantially rectangular shape in a plan view, and the rotation preventing claw is constructed. Even if the surface cannot be cut into the surface, the mounting of the mounting frame is less affected.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to FIGS.

As shown in FIG. 1, a cover 1 is used in this embodiment.
0 and a body 20 are provided, a mounting frame 30 for mounting the body 1 in an embedding box embedded in an embedding hole, and a plate 40 for covering the front surface of the mounting frame 30.

The cover 10 is a cylindrical cover body 1 having a bottom.
0a and an outer brim portion 10b formed on the front surface of the cover body 10a and having a substantially square shape in plan view are integrally formed as a synthetic resin molded product.
And a cylindrical plug body 1 of the plug 100 shown in FIG.
A recess 11 into which 01 is fitted from the front is formed, and the recess 1
A pair of pin insertion ports 11 a into which the pair of round pins 102 led out from the plug body 101 are inserted are formed on the bottom surface of the plug 1. Further, on the inner peripheral surface of the recess 11, a pair of guide grooves 11 for guiding a pair of protruding portions 103 formed in parallel with the axial direction of the cylindrical plug body 101.
b is formed. Further, a screw insertion hole 11c through which an assembly screw 2 for connecting the cover 10 and the body 20 to assemble the body 1 is inserted is provided at the center of the bottom surface of the recess 11, and as shown in FIG. A cylindrical boss portion 11d protruding rearward is formed around the screw insertion hole 11c on the rear surface of 10a.

Here, the plug body 101 of the plug 100
Is provided with a pair of grounding electrodes 104, and the recess 11 of the cover 10 is in contact with the grounding electrode 104 of the plug body 101. Is formed in the recess 11 from the rear surface side of the cover body 10a, and a slit 11e for securing a movement space for the contact piece 62 is formed. The slit 11e is formed in an L shape across the bottom surface and the inner side surface of the recess 11. Here, the contact piece 62 of the ground blade receiving portion 60 is formed to be narrower than the base end piece 61 of the ground blade receiving portion 60, and a groove 62a is formed along the extending direction from the base end piece 61. Thus, it has flexibility. In addition, since the pair of contact pieces 62 are urged in such a direction that the tip ends approach each other and project inward from the inner peripheral surface of the recess 11, the plug body 101 of the plug 100 is recessed from the front of the body 1. When it is fitted in, it comes into contact with the ground electrode 104 and bends outward to make sure contact with the ground electrode 104.

A door body 80 for opening and closing the pair of pin insertion openings 11a is provided on the rear surface of the cover body 10a. The door body 80 has a shaft hole 8 through which the boss 11d is inserted.
0b and a pair of blades 80c extending outwardly from the outer peripheral edge of the ring portion 80a.
And a cylindrical door portion 80d that projects forward from each wing piece 80c and is inserted into the pin insertion opening 11a of the cover 10 so as to be able to move forward and backward, are integrally formed as a synthetic resin molded product. In addition,
The front surfaces of the pair of door portions 80d are inclined surfaces that are inclined in opposite directions. The door body 80 is housed in a door cover 82 together with a return spring 81. The return spring 81 is composed of a coil spring, and one end portion 81a is fixed to the door body 80 while being externally inserted in the boss portion 11d inserted into the shaft hole 80b of the ring portion 80a, and the other end portion 81b. Is a rib 12 for temporary fixing protruding from the rear surface of the cover body 10a.
And is temporarily fixed to the rear surface of the cover body 10a.
Here, the temporary fixing rib 12 is integrally formed with the reinforcing rib 13 that reinforces the temporary fixing rib 12 as shown in FIG.
Formed in a shape, and projectingly provided at positions symmetrical with respect to the boss 11d. Therefore, the reinforcing rib 13
Thus, the temporary fixing rib 12 can be reinforced to prevent the temporary fixing rib 12 from being damaged. Further, since the temporary fixing ribs 12 are provided so as to project at a position symmetrical with respect to the boss 11d, the end 81b of the return spring 81 can be locked to any of the temporary fixing ribs 12. , Return spring 81
There is an advantage that the assembling property can be improved because the mounting direction is not limited.

On the other hand, the door cover 82 is formed of a synthetic resin in the shape of a rectangular box having an open front surface, an insertion hole 83 for inserting the assembly screw 2 is provided in the center, and the round pins 102 are provided on both sides of the insertion hole 83. A pair of round pin insertion holes 84 that are inserted are provided. A pair of assembly pieces 85 are formed on the bottom surface of the door cover 82 at the periphery of the insertion hole 83 so as to face each other and project forward. As shown in FIG. 9, the assembly piece 85 is provided with a locking portion 85a protruding outward, and a groove 85b continuous with the insertion hole 83 is formed on the inner peripheral surface thereof.
Further, a pair of ribs 86 are provided inside the door cover 82 at positions facing each other with the insertion hole 83 interposed therebetween, and when the door cover 82 is attached to the cover body 10a, the temporary fixing ribs 12 and the ribs 86 are provided. Between the end 81 of the return spring 81
b is sandwiched and fixed.

Now, a procedure for attaching the door body 80, the return spring 81 and the door cover 82 to the cover 10 will be described. First, the boss portion 11d is inserted into the shaft hole 80b of the ring portion 80a of the door body 80 to which the return spring 81 is fixed at the one end portion 81a, and the door portion 80d is inserted into the pin insertion port 11a. The other end 81b is fixed to the temporary fixing rib 1.
The door body 80 and the return spring 81 are temporarily fixed to the cover body 10a by being locked to the cover body 2 (see FIG. 6). An inclined surface that is inclined inward is formed at the opening edge of the boss portion 11d, and the assembly piece 85 of the door body 80 is formed from the rear of the cover 10.
Is inserted into the screw insertion hole 11c of the cover body 10a,
Guided by the inclined surface, the assembly pieces 85 are bent toward each other. On the other hand, a pair of engaged portions 11f are provided inwardly on the inner peripheral surface of the boss portion 11d, and when the assembly piece 85 is inserted into the screw insertion hole 11c while being bent, Eventually, the locking portion 85a of the assembly piece 85 becomes the locked portion 11
Assembling piece 85, which is mounted on the locked portion 11f by overcoming f
Is prevented from coming off, and the door cover 82 is attached to the cover 10 (see FIG. 9). That is, conventionally, the door cover is attached to the cover using the rivet, but in the present embodiment, the door cover 82 can be easily attached to the cover 10 without using another component such as the rivet.
Further, the assemblability of the cover 10 can be improved and the cost can be reduced by reducing the number of parts. Until the door cover 82 is attached to the cover 10 in this manner, the door body 80 and the return spring 81 are operated by the provisional fixing ribs 12 and the cover body 10a.
Since it is temporarily fixed to, the workability when attaching the door cover 82 is improved.

When the round pin 102 of the plug 100 is not inserted, as shown in FIG.
Since the door body 80 is urged toward the cover body 10a by 1, the door portion 80d of the door body 80 is not attached to the cover body 10a.
Since it is inserted into the pin insertion opening 11a from the rear side to close the pin insertion opening 11a, foreign matter can be prevented from entering through the pin insertion opening 11a. Then, when the plug 100 is connected, the door 8 is closed by the round pin 102 inserted into the pin insertion port 11a.
A rearward pressing force acts on 0d, the door body 80 moves rearward against the spring force of the return spring 81, and the door portion 80d retreats from the pin insertion port 11a. As a result, the door body 8
0 becomes rotatable around the boss portion 11d, and the round pin 10
The door body 80 is rotated against the spring force of the return spring 81 by the pressing force received from 2, and the position of the door portion 80d is displaced to open the pin insertion port 11a, so that the round pin 102 is attached to the door cover 82. A blade receiving portion 50 (described later) attached to the front surface of the body 20 by advancing backward through the round pin insertion hole 84.
Can be connected to. Here, since the tapered surface 85c is formed on the front surface of the door portion 80d, when the pressing force is applied from the round pin 102, a force in the rotating direction can be applied to the door body 80 by the tapered surface 85c, The door body 80 can be smoothly rotated. The round pin 10
When 2 is pulled out from the pin insertion opening 11a, the door body 80 is rotated by the spring force of the return spring 81 and moved toward the cover body 10a, and the door portion 80d is moved to the pin insertion opening 1a.
The pin insertion port 11a is closed by returning to the position (returning position) where the pin 1a is inserted.

The body 20 is made of a synthetic resin molded product, and is divided into three parts by two separating walls 21 which are projected on the front surface with a space therebetween. A rivet mounting hole 20a for mounting a rivet 3 having a rectangular nut 3a that is screwed with the assembly screw 2 at one end is provided at a central portion between the two isolation walls 21.
A fitting recess 20b into which a nut 64 that is screwed into a terminal screw 63 for connecting a ground wire to the ground blade receiving portion 60 is fitted is provided on both sides of a, and the terminal screw 63 is provided at the center of the fitting recess 20b. Is provided with a hole 20c into which the tip of is inserted. An insertion hole 61a through which the rivet 3 is inserted is provided at the center of the base end piece 61 of the ground blade receiving portion 60 in the longitudinal direction, and the terminal screw 6 is provided near both ends of the base end piece 61 sandwiching the insertion hole 61a.
An insertion hole 61b through which the No. 3 is inserted is provided. That is, the ground blade receiving portion 60 is attached to the body 20 by inserting the rivet 3 inserted into the rivet attachment hole 20a from the rear of the body 20 into the insertion hole 61b of the base end piece 61 and caulking it, and further from the front side. The assembly screw 2 inserted through the screw insertion hole 11c of the base 10 is inserted into the insertion hole 61 of the base end piece 61.
The cover 10 and the body 20 are coupled to each other by assembling the body 1 by inserting the assembly screw 2 into the nut 3a of the rivet 3 which is inserted into the a and is attached to the rivet mounting hole 20a of the body 20.

Here, in the door cover 82, a tapered surface 85c that is inclined rearward toward the insertion hole 83 is formed at the tip of the assembly piece 85 that abuts against the head of the assembly screw 2. Further, the screw insertion hole 1 of the cover body 10a
A taper surface 11g inclined rearward is also formed on the inner peripheral surface of the 1c so as to face each other. The taper surface 11c and the taper surface 85c of the assembly piece 85 form a portion where the head of the assembly screw 2 abuts. It has a mortar shape as a whole. That is, when a countersunk screw is used as the assembly screw 2, the head of the assembly screw 2 fits better and the cover 10 and the body 20 can be firmly coupled. Also, in FIG.
As shown in FIGS. 8 and 9, a pair of semi-cylindrical projections 11h projecting inward are provided on the inner peripheral surface of the screw insertion hole 11c at positions facing each other.
By pressing 1h against the assembly screw 2, the assembly screw 2
Of the cover main body 1
It is possible to prevent falling off from 0a.

On the other hand, at both end portions of the front surface of the body 20 sandwiching the central portion, the blade receiving portion 5 for receiving the round pin 102 of the plug 100 inserted into the pin insertion opening 11a of the cover 10.
The storage room 22 stores 0s. The blade receiving portion 50 is formed by bending a metal plate having conductivity and spring property, and has a terminal piece 51 having an insertion hole 51a through which the terminal screw 58 is inserted, and a terminal piece. 51
A pair of spring plates 52 bent and bent from both end edges of the spring plate 52 to face each other, arcuate pieces 53 provided at the tip of each spring plate 52, and a projecting piece 54 projecting from the tip edge of each arcuate piece 53.
And a locking projection 55 protruding outward from the base end edge of one spring plate 52. The pair of arc-shaped pieces 53 are round pins 10.
2 are separated by a distance not larger than the diameter of 2, and the circular pin 102 inserted between the arcuate pieces 53 is clamped by the spring force of the spring plate 52, and the blade receiving portion 50 causes the circular pin 102 to move.
Are electrically and mechanically connected. The edge of the arc-shaped piece 53 on the side where the round pin 102 is inserted is expanded outward, so that the round pin 102 can be easily inserted between the arc-shaped pieces 53.

A fitting recess 22a into which a nut 59 screwed with a terminal screw 58 is fitted, and a protruding piece 54 of the blade receiving portion 50 are inserted into one end of the housing chamber 22 from a direction along the front surface of the body 20. An insertion groove 22c is provided, and an insertion hole 22b into which the terminal screw 58 is inserted is provided on the bottom surface of the fitting recess 22a. That is, when the blade receiving portion 50 is inserted into the storage chamber 22 along the front surface of the body 20 from the end portion on the side where the fitting recess 22a is provided, the protruding piece 54 is inserted into the insertion groove 22c. The blade receiving portion 50 is prevented from coming off (upward in FIG. 11), and the locking projection 55 provided on the base end edge of the spring plate 52 is locked to the body 20 so that the blade receiving portion in the insertion direction is inserted. The movement of the blade receiving portion 50 is regulated, and the terminal screw 58 inserted from the front is screwed into the nut 59 fitted in the fitting recess 22a to regulate the movement of the blade receiving portion 50 in the anti-insertion direction. The receiving portion 50 is stored in the storage chamber 22. As shown in FIG. 12, the locking rib 26 that locks the blade receiving portion 50 housed in the housing chamber 22 is provided on the partition wall 2.
If it is provided so as to project from the side surface of the partition wall 24 and the partition wall 24, there is an advantage that the fixing strength of the blade receiving portion 50 to the body 20 can be improved.

By the way, at the both ends of the base end piece 61 of the ground blade receiving portion 60 in the longitudinal direction, a gap is provided between the ground blade receiving portion 60 and the isolation wall 21 to form a ground wire insertion port 25 into which the ground wire is inserted. That is, the core wire of the ground wire with the coating stripped is inserted into the ground wire insertion port 25, and electrically and mechanically connected to the ground blade receiving portion 60 by the terminal screw 63 and the nut 64. Here, a cutout 65 is provided at a portion of the ground blade receiving portion 60 facing the ground wire insertion opening 25, that is, at an end side edge of the base end piece 61.
Is provided to suppress the interference between the ground wire and the ground blade receiving portion 60 when the ground wire is inserted into the ground wire insertion port 25, thereby facilitating the insertion of the ground wire. In addition, as shown in FIG.
Notches 65 may be provided on both sides of the end side edge of the.
Here, when the locking projection 55 for fixing the blade receiving portion 50 to the body 20 is also provided on the ground wire insertion port 25 side, the blade receiving portion 50 (locking projection 55) and the ground wire (FIG. 13). It is difficult to secure a sufficient insulation distance from the inside (illustrated by a two-dot broken line). Therefore, in order to secure a sufficient insulation distance between the blade receiving portion 50 and the ground wire, as shown in FIG. 14, an outer end portion of the blade receiving portion 50 with respect to the ground wire insertion port 25 (on the side of the partition wall 24 described later). The locking protrusion 55 may be provided at the end). However, in the case of such a structure, the positions where the locking projections 55 are provided are different between the two blade receiving portions 50, and each blade receiving portion 50 must be a separate component. Therefore, in the present embodiment, as shown in FIG. 11, the width dimension of one of the isolation walls (the isolation wall on the right side in the figure) 21 on the locking projection 55 side is increased to close the ground wire insertion port 25, The locking projection 55 is locked to the isolation wall 21 that closes the ground wire insertion port 25. As a result, there is an advantage that the insulation distance between each blade receiving portion 50 and the grounding wire can be secured, and at the same time, the two blade receiving portions 50 can have the same shape and parts can be shared. It should be noted that the maximum number of ground lines connected to the ground blade receiving portion 60 is about 3 even when the feed wiring and the wiring to the mounting frame 30 are taken into consideration.
Even if one grounding wire insertion port 25 is closed by 1, if there are three remaining grounding wire insertion ports 25, there is no particular problem.

Further, mounting frames 30 are provided on both side surfaces of the body 20.
In addition, mounting bases 23 for mounting the mounting brackets 70 are respectively provided so as to project laterally, and the mounting base 23 and the storage chamber 22 are provided.
A partition wall 24 is erected between the blade receiving portion 50 and the mounting frame 30 and the mounting bracket 70 to secure an insulation distance. As will be described later, the mounting base 23 has step portions 23a formed on both side surfaces thereof for engaging locking pieces 35b provided on the mounting frame 30, and nuts to which mounting screws 78 for mounting the mounting bracket 70 are screwed. Fitting recess 23b into which 79 is fitted
Is provided on the front surface, and a hole 23c into which the mounting screw 78 is inserted is provided at the center of the fitting recess 23b. The mounting bracket 70 is substantially U-shaped, and each of the two leg pieces 73 extending from both ends of a rectangular plate-shaped base end piece 71 having a screw insertion hole 72 through which a mounting screw 78 is inserted in the central portion. Is formed with a claw 74 at the tip end thereof, and a locking piece 75 that is inserted and locked into a locking hole 32a (described later) of the mounting frame 30 is provided at the end edge of the base end piece 71. The mounting frame 30 is fixed by making the claws 74 bite into the inner peripheral surface of an embedded box made of a synthetic resin called a C-type box.

Next, the mounting frame 30 will be described. The mounting frame 30 is made of metal, is formed in a rectangular flat plate shape with a circular mounting window 31 opening in the center, and a pair of arm pieces 32 hangs rearward from the peripheral edge of the mounting window 31. Positioning projections 36 and positioning recesses 37 having shapes and dimensions that can be fitted to each other are formed on the respective sides of the mounting frame 30, and when a plurality of mounting frames 30 are arranged in parallel, the mounting frames 30 adjacent to each other are positioned. The positioning protrusion 36 and the positioning recess 37 are fitted to each other so that they can be positioned. Further, the mounting frame 30 has a circular large diameter portion 33a and a large diameter portion 33a.
A box screw insertion hole 33, which is narrower and has an arc-shaped small-diameter portion 33b that is continuous with the large-diameter portion 33a at one end, is provided at the center of the four sides. Further, a pair of connection tabs 34 to which electric wires are connected when the mounting frame 30 is connected to the ground blade receiving portion 60 are provided on the periphery of the mounting window 31 in a protruding manner.
A rectangular locking hole 32a into which the locking piece 75 of the mounting member 70 is inserted and locked is formed in the arm piece 32, and a fixing piece 35 is bent at the tip. This fixing piece 35 is formed in a substantially U-shape by suspending a locking piece 35b whose tip is formed in a substantially V shape from both ends of a base piece 35a continuous with the arm piece 32, and is formed in a substantially U-shape. Mounting screw 7 at the center of one edge
A semi-circular groove 35c for letting out 8 is formed.

Thus, the mount 23 is attached from the front of the body 20.
The fixing piece 35 is placed so as to straddle over the base 20, and the locking pieces 35b of the fixing piece 35 are engaged with the step portions 23a formed on both side surfaces of the mounting base 23 as shown in FIG. The mounting frame 30 is mounted. At this time, the nut 79 fitted into the fitting recess 23b of the mounting base 23 is sandwiched between the fixing piece 35 (base piece 35a) of the mounting frame 30 and the body 20, and the nut 79 is fitted into the fitting recess. It does not fall off from 23b. Then, the locking piece 75 is inserted into the locking hole 32a of the arm piece 32 from the side of the mounting window 31 so that the arm piece 32 of the mounting frame 30 is sandwiched between the pair of leg pieces 73, and the base end of the mounting bracket 70 is inserted. The nut 7 fixed to the mounting base 23 by the body 20 and the mounting frame 30 as described above by inserting the mounting screw 78 from the front into the screw insertion hole 72 provided in the piece 71.
The mounting bracket 70 is mounted on the mounting frame 30 by screwing the mounting screw 78 onto the mounting bracket 9. When the mounting screw 78 is tightened into the nut 79, the base end piece 71 of the mounting bracket 70 is attached to the body 20 (the mounting base 2 by the head of the mounting screw 78).
3), but at this time, the locking piece 75 provided on the base end piece 71 is locked in the locking hole 32a of the arm piece 32 of the mounting frame 30. The mounting bracket 70 rotates as a fulcrum, and as a result, the leg pieces 73 are attached to the body 2
It is possible to make the claw 74 bite into the peripheral surface of the embedding box by moving in a direction projecting to the side of 0.

The plate 40 has a substantially square window hole 4 in the center.
2 has a plate body 41 made of a synthetic resin formed in a substantially rectangular frame shape with an opening, and the front surface of the plate body 41 is an inclined surface that is inclined rearward from the center toward the outside. The window hole 42 of the plate body 41 has an outer collar portion 10b of the cover 10.
The stepped portion 43 is formed to have substantially the same shape and size as the outer shape of the above, and an inner peripheral surface thereof is formed with an engaging step portion 43 engaging with the outer flange portion 10b over the entire circumference. That is, the plate 40 is arranged on the front side of the mounting frame 30 so as to be covered with the plate body 41, the cover body 10 a is inserted into the window hole 42 of the plate 40 from the front, and the locking step portion 43 of the window hole 42 is inserted. The plate 40 is locked and fixed to the cover 10 by assembling the body 1 by connecting the cover 10 and the body 20 with the assembly screw 2 in a state where the outer flange portion 10b of the cover 10 is locked. Become. In this way, the mounting frame 30 is attached to the plate 40.
By covering with, it can be placed on the construction surface with a good appearance.

The embedded outlet of the present embodiment configured as described above is installed in an embedded hole provided on a construction surface such as a wall surface by the following procedure.

First, with the blade receiving portion 50, the ground blade receiving portion 60, the mounting bracket 70 and the mounting frame 30 attached to the body 20, the blade receiving portion 50 and the ground blade receiving portion 60 were pulled out from the embedding holes. Connect the power supply wire and ground wire. Then, a box screw 4 previously attached to an embedding box (not shown) embedded in the embedding hole.
Insert the body 20 into the embedding hole with the box screw insertion hole 33 inserted into the large diameter portion 33a, and rotate the mounting frame 30 to move the box screw 4 from the large diameter portion 33a to the small diameter portion 33b. The mounting frame 30 is temporarily fixed. By tightening the box screw 4 in this state, the mounting frame 30 can be fixed to the embedded box and mounted on the construction surface. Here, for an embedded box that does not have a structure for mounting the box screw 4 (for example, a so-called C-shaped box), tighten the mounting screw 78 with the mounting frame 30 positioned on the construction surface. By engaging the claw 74 of the mounting bracket 70 with the peripheral surface of the embedding box,
The attachment frame 30 may be attached to the embedding box.

Next, the plate 40 is covered on the front surface of the mounting frame 30, and the cover body 10a of the cover 10 to which the door body 80, the return spring 81 and the door cover 82 are mounted is passed through the window hole 42 of the plate 40 to mount the mounting frame 30. The outer flange portion 10b of the cover 10 is locked to the locking step 43 of the plate 40 by inserting it into the mounting window 31. At this time, as shown in FIGS. 18 and 19, the box screw 2 protruding to the front surface of the mounting frame 30.
In order to prevent the head of the box from interfering with the cover 10, a recess 10c for letting the head of the box screw 2 escape is provided on the outer flange 10b of the cover 10 at the rear side of the center of each side. The cover 10 is also attached to the locking step portion 43 of the plate 40.
A concave portion 44 having a shape along the concave portion 10c is formed to prevent the plate 40 and the box screw 2 from interfering with each other. Here, since the concave portion 10c is provided at the center of each side of the outer collar portion 10b, the outer collar portion 10 is easily damaged by impact or the like.
The strength at the four corners of b does not decrease. If the mounting bracket 70 is not used, the head of the mounting screw 78 may interfere with the cover body 10a.
And, as shown in FIG. 3, a relief portion 14 for escaping the head of the mounting screw 78 is provided in the rear end portion of the cover body 10a,
Interference between the cover body 10a and the mounting screw 78 is prevented by allowing the head portion of the mounting screw 78 to escape by the escape portion 14.

Finally, the assembly screw 2 is inserted from the front into the screw insertion hole 11c on the bottom surface of the recess 11 of the cover 10, and the body 20
The cover 10 and the body 20 are joined by screwing the nut 3a of the rivet 3 fixed to the body 1 to assemble the body 1 and the construction is completed.

Thus, in the present embodiment, as described above, the mounting screw 78 inserted into the screw insertion hole 72 formed in the mounting member 70 and the screw inserted by being sandwiched between the body 20 and the mounting frame 30. Since the mounting bracket 70 is mounted on the mounting frame 30 with the nut 79 with which the mounting screw 78 inserted through the hole 72 is screwed, the mounting frame 30 is not provided with a screw hole into which the mounting screw 78 is screwed. Therefore, as shown in the development view of FIG. 17, the length dimension of the arm piece 32 of the mounting frame 30 can be made larger than that of the conventional example. Therefore, the distance from the front surface of the mounting frame 30 to the front surface of the body 20 can be made larger than that of the conventional example, and the height of the body 1 exposed on the construction surface can be made smaller than that of the conventional example to improve the appearance. can do. For example, in the conventional example shown in FIG. 24, the distance A ′ from the front surface of the mounting frame 30 ′ to the front surface of the body 20 ′ is about 17 mm.
While the height B'of the body 1'was about 12 mm, in the present embodiment, the distance A is about 20 mm and the height B is about 9 mm as shown in FIG. The height of the body 1 and the plate 40 exposed on the construction surface is 3 mm.
It can be lowered.

Since the mounting frame 30 may rotate when the box screw 2 is tightened, the mounting frame 30 has a rotation preventing claw 38 that cuts into the construction surface and prevents the mounting frame 30 from rotating. It is desirable to provide it. This rotation prevention claw 3
8 is formed by, for example, bending rearward the substantially triangular projections protruding from the four corners of the mounting frame 30 as shown in FIG. 20, or as shown in FIG. It is formed by bending. However, if the structure is provided at the four corners of the mounting frame 30, there is an advantage in that the mounting of the mounting frame 30 is not easily affected even if the rotation preventing claws 38 cannot be cut into the construction surface.

[0039]

According to the invention of claim 1, there is provided an implantable outlet which is arranged in such a manner that the rear part of the body is inserted into an embedding hole provided on the construction surface, and a recess into which the plug is fitted is formed. Holds a cover that has a pin insertion port on the front surface where the round pin of the plug is inserted in the bottom of the recess, and a blade receiving part that receives the round pin inserted into the pin insertion port and is joined to the cover from the rear side The body, the mounting frame for mounting the body consisting of the cover and the body to the embedded box attached to the body and embedded in the embedded hole by using the box screw, and the claw formed at the tip of the embedded frame. Mounting bracket that attaches the mounting frame to the construction material or the mounting box by making it bite into the embedded box embedded in the embedded hole, mounting screws that are inserted into the screw insertion holes drilled in the mounting bracket, the body and the mounting frame It is sandwiched between Since there is a nut with which the mounting screw that is inserted into is screwed, the mounting frame is not provided with a screw hole into which the mounting screw is screwed, so the distance from the front surface of the mounting frame to the front surface of the body is smaller than that of the conventional example. You can take big,
There is an effect that the height dimension of the body exposed on the construction surface can be reduced to improve the appearance.

According to a second aspect of the present invention, in the first aspect of the present invention, since the recessed portion for allowing the head of the box screw to escape is provided in the cover, interference between the box screw and the cover is prevented while suppressing a decrease in strength of the cover. There is an effect that can be.

According to a third aspect of the present invention, in the first aspect of the present invention, the rear portion of the cover is provided with a relief portion for escaping the head portion of the mounting screw, so that interference between the mounting screw and the cover is suppressed while suppressing deterioration of the strength of the cover. The effect is that it can be prevented.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a grounding electrode exposed on the side surface of the plug is provided, which has a contact piece that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess. A ground blade receiving portion for receiving is provided, and the ground blade receiving portion is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the ground blade receiving portion. The isolation wall that separates the space is projected from the front surface of the body, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving part is opened between the isolation wall and the ground blade receiving part. Since the locking projection for locking the body is provided at the outer end of the blade receiving portion with respect to the ground wire insertion opening, there is an effect that the insulation distance between the ground blade receiving portion and the blade receiving portion can be increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a pair of contact pieces that are capable of advancing and retreating into the recess through a slit provided on the peripheral surface of the recess are provided, and the pair of contact pieces are exposed on the side surface of the plug. The grounding blade receiving portion for receiving the grounding electrode of the grounding blade is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the grounding blade receiving portion. The isolation wall that isolates the blade receiving portion from the front surface of the body is projected, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving portion between one isolation wall and the ground blade receiving portion. Is open at both ends, and the ground wire insertion port is open only at one end between the other isolation wall and the ground blade receiving part.
A locking projection for locking the body is provided at the outer end of one blade receiving part with respect to the ground wire insertion port, and the other blade receiving part is provided at the end of the isolation wall where the ground line insertion port is not open. Since the locking projections for locking are provided, the insulation distance between the ground blade receiving portion and the blade receiving portion can be increased, and the pair of blade receiving members can be formed in the same shape to have common parts.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the invention, since the locking ribs for locking the blade receiving portion are provided on the body, the effect of improving the fixing strength of the blade receiving portion with respect to the body is improved. There is.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the grounding electrode exposed on the side surface of the plug is provided, which has a contact piece that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess. A ground blade receiving portion for receiving is provided, and the ground blade receiving portion is fixed to the center of the front surface of the body, and the blade receiving portions are fixed to the front surfaces of the body on both sides of the ground blade receiving portion. The isolation wall that separates between the two is projected on the front surface of the body, and the ground wire insertion port for inserting the ground wire connected to the ground blade receiving part is opened between the isolation wall and the ground blade receiving part to make the grounding. Since the notch is provided in the portion of the blade receiving portion facing the electric wire insertion opening, there is an effect that the ground wire can be easily inserted into the electric wire insertion opening.

According to the invention of claim 8, in the invention of claim 7, since the notches are provided on both sides of the ground blade receiving portion facing the wire insertion port, the ground wire can be inserted into any of the wire insertion ports. This has the effect of making it easier.

According to a ninth aspect of the present invention, in the first aspect of the present invention, since the mounting frame is provided with a rotation preventing pawl that cuts into the building surface and prevents the mounting frame from rotating, when the box screw is tightened. This has the effect of preventing the mounting frame from rotating.

According to a tenth aspect of the present invention, in the ninth aspect of the invention, since the rotation preventing claws are provided at the corners of the mounting frame formed in a substantially rectangular shape in plan view, the rotation preventing claws bite into the construction surface. Even if it cannot be done, there is an effect that the mounting of the mounting frame is less affected.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment.

FIG. 2 is a perspective view of the same cover as seen from the rear side.

FIG. 3 shows a cover, a body, a mounting frame, and a plate in the same as above, (a) is a front view and (b) is a sectional view.

FIG. 4 shows a cover, a door body, a return spring, a door cover and a plate in the same as above, (a) is a front view, (b) is a sectional view taken along line XX ′ in FIG. ) Is the same figure (a)
FIG. 7 is a sectional view taken along line YY ′ of FIG.

FIG. 5 is a front view showing a main part of the cover in the above.

FIG. 6 is a rear view of the cover, door and return spring in the above.

FIG. 7 is a rear view of the cover and the door cover in the above.

FIG. 8 is a cross-sectional view showing a main part of the cover, the door body, the return spring, and the door cover in the above.

FIG. 9 is a cross-sectional view showing a main part of the cover, the door body, the return spring, and the door cover in the above.

FIG. 10 is a cross-sectional view showing main parts of the cover, the door body, the return spring, the door cover, and the assembly screw in the above.

FIG. 11 shows a body, a blade receiving portion, and a ground blade receiving portion in the same as above, (a) is a front view and (b) is a side view.

FIG. 12 shows another structure of the body, the blade receiving portion, and the ground blade receiving portion in the same as above, (a) is a front view and (b) is a side view.

FIG. 13 shows still another structure of the body, the blade receiving portion, and the ground blade receiving portion in the same as above, (a) is a front view and (b) is a side view.

FIG. 14 shows another structure of the body, the blade receiving portion, and the ground blade receiving portion in the same as above, (a) is a front view and (b) is a side view.

FIG. 15 shows still another structure of the body, the blade receiving portion, and the ground blade receiving portion in the same as above, (a) is a front view and (b) is a side view.

FIG. 16 shows a mounting frame and a body in the above,
(A) is a front view, (b) is a lower side view, (c) is a sectional view,
(D) is a right side view.

FIG. 17 is a development view of the mounting frame of the above.

FIG. 18 is a cross-sectional view showing a cover, a body, a mounting frame, and a plate of the above.

FIG. 19 is a partially omitted sectional view showing a cover and a plate in the above.

FIG. 20 shows another structure of the mounting frame and body in the above, wherein (a) is a front view and (b) is a lower side view.

FIG. 21 is a view showing still another structure of the mounting frame and the body in the above, (a) is a front view and (b) is a lower side view.

FIG. 22 is a perspective view of a plug.

23A is a front view of the plug, FIG. 23B is a side view of the plug, and FIG. 23C is a half sectional view of the plug.

FIG. 24 is a sectional view showing a cover, a body and a plate of a conventional example.

FIG. 25 shows a conventional mounting frame and body, (a) is a front view, (b) is a lower side view, (c) is a sectional view, and (d) is a right side view.

FIG. 26 is a development view of a conventional mounting frame.

[Explanation of symbols]

10 covers 11 recess 20 body 23 Mounting base 23b Fitting recess 30 mounting frame 32 arm pieces 35 fixed piece 35a base piece 35b locking piece 35c groove 70 Mounting bracket 72 screw insertion hole 73 Legs 74 nails 78 mounting screw 79 nuts

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naoki Kanemoto             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 4E360 AB03 AB12 AB20 BA08 BC05                       BD03 EA05 ED02 ED17 ED27                       GA06 GA12 GA33 GA50 GA51                       GA53                 5E087 EE10 FF02 JJ02 LL05 LL13                       LL28 LL37 MM09 QQ06 RR49                 5G357 CA05 CB05 CC01 CC05 CD02                       CE01 CF03                 5G361 AA02 AB02 AC01 AC04 AD01                       AE01

Claims (10)

[Claims] 1. An embedded outlet which is arranged such that a rear portion of a body is inserted into an embedded hole provided on a construction surface.
A cover with a recess on the front side where the plug fits is formed on the bottom surface of the recess, and a blade receiving part that receives the round pin inserted into the pin insertion port. A body that holds and is joined to the cover from the rear side, a mounting frame that mounts the body consisting of the cover and body using box screws to the embedded box that is attached to the body and embedded in the embedding hole, and the tip part Insert the mounting frame to the construction material or the embedding box by biting the formed claw into the construction material or the embedding box embedded in the embedding hole, and insert it into the screw insertion hole drilled in the mounting metal fitting. An embedded socket, comprising: a mounting screw; and a nut that is clamped between the body and the mounting frame and into which the mounting screw inserted into the screw insertion hole is screwed. 2. The implantable outlet according to claim 1, wherein the cover is provided with a recess for allowing the head of the box screw to escape. 3. The implantable outlet according to claim 1, wherein a rear portion of the cover is provided with a relief portion for releasing the head portion of the mounting screw. 4. A ground blade receiving portion for receiving a ground electrode exposed on a side surface of the plug, which has a contact piece that can advance and retreat into the recess through a slit provided on a peripheral surface of the recess of the cover, and has a center of a front surface of the body. The grounding blade receiving part is fixed to the grounding blade receiving part, and the blade receiving parts are fixed to the front surfaces of the body on both sides of the grounding blade receiving part, respectively, and the isolation wall that separates the grounding blade receiving part from each blade receiving part projects on the front surface of the body. The ground wire insertion opening for inserting the ground wire connected to the ground blade receiving portion is provided between the isolation wall and the ground blade receiving portion, and the outer end of each blade receiving portion with respect to the ground wire insertion opening is formed. 2. The implantable outlet according to claim 1, further comprising a locking protrusion for locking the body. 5. A ground blade receiving portion for receiving a pair of ground electrodes exposed on the side surface of the plug, the ground blade receiving portion having a pair of contact pieces that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess, The ground blade receiving part is fixed to the center of the front surface of the body, and the blade receiving parts are fixed to the front surfaces of the body on both sides of the ground blade receiving part, respectively, and the isolation wall that separates the ground blade receiving part and each blade receiving part is provided. A grounding wire insertion port, which is provided on the front surface of the body and has one end wall and the grounding blade receiving part for inserting a grounding wire connected to the grounding blade receiving part, opens at both ends, and the other isolation wall is provided. Between the ground blade receiving portion, the ground wire insertion port is opened only at one end, and a locking protrusion for locking the body is provided at the outer end of the one blade receiving portion with respect to the ground wire insertion port. The other blade receiving part has a locking protrusion that locks to the end of the isolation wall on the side where the ground wire insertion port is not open. The implantable outlet according to claim 1, which is provided. 6. The implantable outlet according to claim 4, wherein a locking rib for locking the blade receiving portion is provided on the body. 7. The center of the front surface of the body, which includes a ground blade receiving portion that has a contact piece that can advance and retreat into the recess through a slit provided on the peripheral surface of the recess, and that receives the ground electrode exposed on the side surface of the plug. The grounding blade receiving part is fixed to the grounding blade receiving part, and the blade receiving parts are fixed to the front surfaces of the body on both sides of the grounding blade receiving part, respectively, and the isolation wall that separates the grounding blade receiving part from each blade receiving part projects on the front surface of the body. The grounding wire insertion port is provided between the isolation wall and the grounding blade receiving part to insert the grounding wire connected to the grounding blade receiving part. The implantable outlet according to claim 1, wherein a notch is provided. 8. The implantable outlet according to claim 7, wherein notches are provided on both sides of the ground blade receiving portion facing the electric wire insertion port. 9. The implantable outlet according to claim 1, wherein the mounting frame is provided with a rotation preventing claw that cuts into the construction surface to prevent the mounting frame from rotating. 10. A rotation preventing claw is provided at a corner portion of a mounting frame formed in a substantially rectangular shape in a plan view.
Embedded plug described.