JP3016134B2 - Coating cover for electric wire box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a coating cover for an electric wire box.

[0002]

2. Description of the Related Art When electrical components such as outlets and switches are installed on a wall of a building, an electric wire box is embedded in the wall, and the electric wires introduced into the electric wire box are connected to the electric components. Is performed. By the way, only the electric wire box is buried in a concrete wall body, a paint cover is attached to the surrounding concrete wall, and a mounting plate for the electric component is arranged on the outer surface of the paint cover. The mounting plate for the electric component may be attached to the electric wire box by inserting a tightening screw from the screw insertion hole of the mounting plate into the screw insertion hole of the coating cover and screwing it to the electric wire box. . However, in such a case, the electric wire box installed in the concrete wall body is inclined with respect to its normal installation posture due to the inconvenience when arranging the electric wire box between the concrete forms and the effect of concrete casting. Sometimes. In this case, in order to insert the tightening screw into the screw insertion hole of the mounting plate of the electric component and the screw insertion hole of the coating cover and screw it into the electric wire box, the mounting plate and the coating cover of the electric component must also be inclined. Therefore, there is a problem that an outlet or a switch attached to a mounting plate of an electric component is inclined and installed on a wall surface.

[0003] In order to prevent such a problem from occurring, conventionally, the number of screw insertion holes is increased or the length of the screw insertion hole is increased on the coating margin cover side so that even if the electric wire box is inclined, the coating margin is reduced. Without tilting the cover, align one of the screw insertion holes (or long holes) of the coating cover with the screw position of the electric wire box, and attach the coating cover to the concrete wall surface. The mounting plate of the electric component is arranged on the outer surface, and the tightening screw is inserted into the screw insertion hole (or the long hole) of the mounting plate of the electric component and the coating cover and screwed to the electric wire box. .

[0004]

However, in the above-mentioned method, the coating cover is attached to the concrete wall surface. Therefore, the coating cover is attached to the electric wire box, and both of them are embedded in the concrete wall. It cannot be applied to the type that is lost.

In the above-mentioned method, when increasing the number of screw insertion holes or forming long holes in the coating cover, it is necessary to do so in a limited range (area), so that the electric wire box is greatly inclined. Therefore, there is also a problem that adjustment cannot be performed with the increased screw insertion hole (or elongated hole).

The present invention has been made under the above circumstances, and can be applied to a type in which a coating cover is attached to an electric wire box and embedded in a concrete wall.
In addition, even if the electric wire box and the paint cover are inclined and buried in the concrete wall, the electric parts such as the outlet and the switch can be easily installed in the proper posture without tilting, thereby improving the installation workability. An object of the present invention is to provide a coating cover for an electric wire box that can be used.

Further, according to the present invention, the inclination of the electric wire box can be adjusted steplessly when the coating cover is attached to the electric wire box, and the range over which the inclination of the electric wire box can be adjusted is larger than in the conventional case. It is another object of the present invention to provide a coating cover for an electric wire box in which the coating width is also significantly increased.

[0008]

According to a first aspect of the present invention, there is provided a coating cover for an electric wire box, wherein the cover main body attached to a front opening of the electric wire box embedded in a wall body has the above-mentioned structure.
Attach to the front end of the box side wall forming the front opening
Mounting seat, and projecting forward from this mounting seat
The surrounding space is a first opening and the electric wire box
The front end face overlaps with the inner surface of the concrete
And a rim of the first opening.
The rear end portion of the tubular wall is a part, the rotary plate having a second mouth opening which is facing the first mouth opening is held rotatably about its axis, the upper Symbol mouth of the second mouth opening A screw hole into which a tightening screw inserted into a screw insertion hole of a mounting plate to which an electric component can be attached is provided at a position facing the first opening of the edge, and the first opening is formed in the cover body. Above cylindrical
A blind plate connected to the front end of the wall via a breakable fragile part
Is blocked by

A second aspect of the present invention is a coating cover for an electric wire box according to the first aspect, wherein an annular shape is formed at the rear end of the cylindrical wall and at the rear end in a stepped shape. And a plurality of protrusions opposed to the slide surface at an interval from each other, and an annular shape integrally provided on an outer peripheral portion of the rotating plate between the slide surface and the plurality of protrusions. Are slidably and rotatably fitted and held.

In these inventions, the cover body is attached to the electric wire box, and the front end face of the cylindrical wall is reinforced with concrete.
When the electric wire box is placed in the concrete form space and concrete is poured in a state where the electric wire box is superimposed on the inner surface of the formwork, the electric wire box is buried in the concrete wall. After the electric wire box is embedded in the wall body, when the rotating plate rotatably held by the cover main body is rotated around its axis, the position of the rotary plate with respect to the cover main body around the axis changes. Therefore, even if the wire box to which the cover body is attached is inclined, the position of the rotary plate around the axis is adjusted steplessly to determine the position of the screw hole provided in the rotary plate at an appropriate position. Will be able to By utilizing this fact, even if the electric wire box is inclined, the electric component mounting plate can be fixed in its normal posture and mounted. In particular, according to the invention according to claim 2, the rotating plate can be held at the edge of the first opening of the cover body with a simple structure.

Also, open the coating cover on the front of the electric wire box.
When attached to the mouth, the first open mouth is blocked by the blind plate
Cover body closes the front opening of the wire box.
Therefore, the electric wire box with this coating cover
After installing in the space for concrete placement,
Concrete and place the wire box in concrete
Even if you bury it in the wall of
No concrete flows into the area. And the blind
After the concrete has hardened, the board
Can be removed from the cover body by
By the child as the rotating plate mounting plate of the electrical component
It can be fixed to

According to a third aspect of the present invention, in the coating cover for an electric wire box according to the second aspect, the front end face of the cylindrical wall of the cover body is screwed into the screw hole of the rotary plate. The mounting plate is formed on a mounting surface overlapping with the mounting plate to be tightened by the tightening screw.

In the present invention , when the mounting plate of the electric component is tightened by the tightening screw screwed into the screw hole of the rotating plate, the mounting plate is pressed against the mounting surface formed by the front end surface of the cylindrical wall by the tightening force. At the same time, the ridge of the rotating plate is pressed against the slide surface on the cover body side, so that the rotating plate and the mounting plate are fixed to the cover body so as not to move. Therefore, after adjusting the position of the rotary plate around its axis as described above, the rotary plate is fixed so as not to move to that position by simply tightening the tightening screw, and at the same time, the mounting plate is attached to the rotary plate. Fixed.

[0014]

FIG. 1 shows a coating cover A according to the present invention.
FIG. 2 is an exploded perspective view showing an embodiment of the present invention together with an electric wire box B, FIG. 2 is a rear view of the cover body 1, and FIG.
4 is an enlarged sectional view taken along line IV-IV in FIG. 2, FIG. 5 is an enlarged sectional view taken along line VV in FIG. 2, and FIG. 6 is a VI-VI line in FIG. 7 is an enlarged cross-sectional view taken along
8 is a rear view of the rotating plate 5, and FIG. 8 is VIII-VIII of FIG.
9 is an enlarged sectional view taken along line IX-IX in FIG. 7, FIG. 10 is an enlarged sectional view taken along line XX in FIG. 7, and FIG. 11 is a cover main body with the blind plate 15 removed. 1 is a front view of the coating cover A with the rotating plate 5 assembled thereto, FIG. 12 is a rear view of the coating cover A, and FIG. 13 is a state in which concrete is cast around a wire box B to which the coating cover A is attached. FIG. 14 is a partially broken side view showing a state in which a mounting plate 9 of an electric component is attached to a coating cover A attached to an electric wire box B, and FIG. 15 is a line XV-XV of FIG. 16 and 17 are explanatory diagrams of the operation of the coating cover A, and FIG. 18 is a schematic front view of the mounting plate 9.

As shown in FIG. 1, the coating cover A is formed by a cover body 1 and a rotating plate 5.

The cover main body 1 will be described with reference to FIG. 1 and FIGS. The cover main body 1 is formed of a synthetic resin integrally molded body. The cover body 1 has a substantially square mounting seat 12.
And a cylindrical wall 13 protruding forward from the mounting seat 12
The space (surrounding space) surrounded by the cylindrical wall 13 is a substantially circular first opening 14. In the cover body 1 in the illustrated example, the first opening 14 is formed so as to be large in proportion to the size of the mounting seat 12, so that the mounting seat 12 slightly protrudes from the root of the cylindrical wall 13 to the outside. It has a tsuba shape.

A blind plate 15 is provided at the front end of the cylindrical wall 13, and the first opening 14 is closed by the blind plate 15. As shown in FIGS. 3 to 5, a ring-shaped continuous portion between the outer peripheral portion of the blind plate 15 and the cylindrical wall 13 is thin, and such a thin continuous portion is fragile. The section 16 is provided. As shown in FIG. 2 and FIG. 6, a recess 17 and a
A tongue piece 18 protruding into the inside 7 is provided, and when an operation such as grasping and prying the tongue piece 18 with a tool such as pliers inserted into the recessed portion 17 is performed, the fragile portion 16 is broken and the blind plate is broken. 15 is removed from the cover body 1. If the fragile portion 16 cannot be broken by simply prying with the tool holding the tongue piece 18, the fragile portion 16 can be broken by attaching a driver bit or the like to the fragile portion 16. In addition, blind plate 1
Boss 15a located on the back surface of the central part of 5 or a circular punched piece 15 that can be punched out by pressing strongly.
b, reinforcing ribs 15c, and the like.

As shown by the imaginary line in FIG. 1, the recess 17 is covered with a projection 19 made of a resilient material and adhered to and held on the front surface of the blind plate 15. In the illustrated example, a flexible foamed resin such as a sponge is used for the protrusion 19. 3, 4, and 6, the front surface of the blind plate 15 is located slightly behind the front end surface 21 of the cylindrical wall 13, and the front surface of the blind plate 15 Front end face 2
A step 22 is held between the first and the second. This step 22
Is large enough to completely accommodate the protrusion 19 when the protrusion 19 described with reference to FIG. 1 is compressed. In other words, the elastic material forming the protruding portion 19 can be compressed until it has a thickness that fits in the step 22.

As shown in FIG. 1 and FIGS. 2 to 4, the mounting seat portion 12 is formed in a flat plate shape, and elongated projections 23 are formed along a pair of opposite sides so as to protrude rearward. Have been. As shown in FIGS. 2 and 5, engagement holes 24, 24 are formed at two locations on the left and right of each of the projections 23, 23. These engagement holes 2
Reference numerals 4 and 24 are used for attaching the cover body 1 to an electric wire box B described later. Further, positioning projections 25 are provided at a plurality of locations on the back surface of the mounting seat 12. These projections 25 play a role in positioning the cover main body 1 with respect to the electric wire box B when the cover main body 1 is attached to the electric wire box B described later.

At the rear end of the cylindrical wall 13 which is the edge of the first opening 14 of the cover body 1, an annular slide surface 26 is provided in a stepped shape, and this slide surface is provided. A plurality of projecting pieces 28, 28 facing each other at an interval are provided on 26. In the illustrated example, two protruding pieces 28 are opposed to the slide surface 26 at two places separated by 180 degrees in the circumferential direction of the slide surface 26.

At the eight positions of the mounting seat 12, screw insertion portions 27 which are opened as necessary are formed. The screw insertion portions 27 will be described later.

The rotary plate 5 will be described with reference to FIG. 1 and FIGS. This rotating plate 5 is made of a synthetic resin molded body,
A second opening 51 having a substantially rectangular shape is provided.
Two upper and lower screw holes 52 are provided at the rim of the opening 51 at symmetrical positions. As shown in FIG. 10, the screw hole 52 in the illustrated example is formed by embedding a metal nut body 54 in a boss 53 projecting forward from the rotating plate 5. Further, each boss 53 is provided with a protruding piece 55 that slides on the inner surface of the cylindrical wall 13 described with reference to FIGS. The rotary plate 5 has four flat portions 56 at equal angles in the upper, lower, left, and right directions, but has a circular shape as a whole. Therefore, in this rotating plate 5, the interval between the upper and lower or left and right cutout portions 56, 56 is slightly shorter than the diameter when the rotating plate 5 is considered to be circular. An annular ridge 57 is integrally provided on the outer peripheral portion of the rotary plate 5 except for the four missing circular portions 56.

The cover body 1 and the rotary plate 5 described above are assembled by fitting the projections 57 of the rotary plate 5 between the slide surface 26 and the projecting piece 28 of the cover body 1 as shown in FIG. In the assembled state, the rotating plate 5
Are held rotatably around the axis of the cover body 1, and the second opening 51 of the rotating plate 5 faces the first opening 14 of the cover body 1. The screw hole 52 of the boss 53 also faces the first opening 14 of the cover body 1.

When the ridge 57 of the rotary plate 5 is fitted between the slide surface 26 of the cover body 1 and the projecting piece 28, the two missing circular portions 56, 56 of the rotary plate 5 are 2
8, the ridge 57 is overlapped on the slide surface 26, and then the ridge 57 is slid on the slide surface 26 to rotate the rotary plate 5 by a predetermined angle. Further, even if such a procedure is not necessarily performed, the rotating plate 5
The rotary plate 5 may be strongly pushed in from a state in which the arc-shaped ridge 57 is overlaid on the protruding pieces 28, 28.
8 is elastically deformed, and the ridge 57 rides over the projections 28, 28, and the ridge 57 overlaps the slide surface 26. At the same time, the projections 28, 28 return to the original shape, and the ridge 57 It fits between the slide surface 26 and the projection 28. FIG.
A front view of a coating cover A in which the rotating plate 5 is assembled to the cover main body 1 from which the above-mentioned blind plate 15 has been removed,
FIG. 12 shows the same coating allowance cover A in a rear view.
FIG. 12 is an enlarged view showing a state in which the protruding piece 28 is superimposed on the ridge 57.

Next, as shown in FIG. 1, the electric wire box B is made of a synthetic resin box having a substantially rectangular front opening 101, and its four box side walls 102 and the bottom wall 10 are formed.
An electric wire insertion portion 104 that is opened by being strongly pressed is formed at a predetermined position of No. 3. Also, engaging claws 105 project outward at two locations on the left and right sides of each of the four box side walls 102, while screw holes 106 are provided at two locations on the left and right inside each of the box side walls 102. Is provided.

The coating cover A in which the rotary plate 5 is attached to the cover body 1 has a mounting seat 12 of the cover body 1.
To the front end 107 of the box side wall 102 of the electric wire box B.
Is fixed to the electric wire box B. That is, as shown by the imaginary line in FIG. 12, the mounting seat 12 is aligned with the front end 107 of the box side wall 102 of the electric wire box B using the positioning protrusion 25 on the coating cover A side. At the same time, when the engaging claw 105 of the electric wire box B is pushed into and engaged with the engaging hole 24 of the coating cover A, the mounting seat 12 is
Is fixed to the front end portion 107, whereby the coating cover A is attached to the electric wire box B. In the illustrated electric wire box B, the engaging claws 105 are provided on each of the four box side walls 102, so that the coating cover A can also be attached to the electric wire box B rotated 90 degrees. Further, if necessary, the screw insertion portion 27 on the coating cover A side is opened, and the mounting screw inserted into the screw insertion portion 27 is screwed into the screw hole 106 on the electric wire box A, so that the coating cover A is connected to the electric wire. It is also possible to attach to the box B.

As shown in FIG. 18, the mounting plate 9 of the electric component is formed in a vertically long rectangular shape, has horizontally long screw insertion holes 91, 91 at the top and bottom thereof, and various electric devices such as a switch and an outlet. It has an opening 92 for mounting the component 200. The mounting plate 9 in the illustrated example can mount three electric components 200 side by side. In this mounting plate 9, the mutual interval L1 between the upper and lower screw insertion holes 91, 91 matches the mutual interval L2 between the upper and lower screw holes 52, 52 of the rotary plate 5 shown in FIG. Further, as shown by phantom lines in FIG. 11, two mounting plates 9, 9 can be mounted side by side on the coating cover A in the illustrated example.

As shown in FIG. 14, the upper and lower ends of the mounting plate 9 are overlapped with the front end face 21 of the cylindrical wall 13 of the cover body 1, and the upper and lower screw insertion holes 91 of the mounting plate 9 are provided. ,
The tightening screws 93, 93 inserted through the screw 91 are screwed into the screw holes 52, 52 of the rotary plate 5, thereby being attached to the coating cover A. In such an attached state, if the tightening screws 93, 93 are tightened with a sufficiently strong force,
Due to the tightening force, the mounting plate 9 moves the front end face 21 of the cylindrical wall 13.
At the same time, the projections 57 (see FIG. 15) of the rotating plate 5 overlap with the sliding surface 26 of the cover body 1 and are pressed, so that the rotating plate 5 and the attaching plate 9 are pressed. Is fixed to the cover body 1 so as not to move. On the other hand, when the tightening screws 93 are loosened, the rotating plate 5 can be rotated around the axis with respect to the cover main body 1 as described above.

Next, an example of a procedure for installing the electric wire box B will be described.

Prior to the construction of the electric wire box B, the blind plate 1
The coating cover A in which the rotating plate 5 is attached to the cover main body 1 from which the cover 5 has not been removed is attached to the electric wire box B.
Then, the electric wire box B to which the coating cover A is attached is attached using the concrete formwork 301 as shown in FIG. In this example, the wire 109 inserted through the wire insertion portion 108 provided on the back of the wire box B is fixed to a reinforcing bar (not shown), and the wire 109 fixed to the wire box B with the wire 109 thus fixed. The front end face 21 of the cylindrical wall 13 on the side of the coating cover A
01 and are superimposed on each other. When the electric wire box B is attached to a predetermined position in this way, the elastic projection 19 (FIG. 1) is moved to the concrete form 301.
, And the protrusion 19 is formed on a step 22 (see FIGS. 3, 4, and 6) formed between the front surface of the blind plate 15 and the front end surface 21 of the cylindrical wall 13. Fit
The front end surface 21 of the cylindrical wall 13 is securely
1 and the position of the electric wire box B is securely determined.

After attaching the electric wire box B in this way,
As shown in FIG. 13, concrete C is cast in the surrounding space for concrete casting and the concrete C is hardened. When placing concrete, blind plate 15
However, the first opening 14 and the second opening 51 of the coating cover A,
Further, since the front opening portion 101 of the electric wire box B is closed, a situation in which concrete flows into the inside of the coating cover A or the inside of the electric wire box B does not occur.

When the concrete form 301 is removed after the concrete C has hardened, the projecting portion 19 (FIG. 1) which has been compressed is restored by its elasticity and projects forward. For this reason, it is possible to easily find the installation location of the electric wire box B by visually checking the projecting portion 19 projecting from the concrete C. Further, even if the cast concrete C has wrapped around the front side of the coating cover A, when the concrete formwork 301 is removed, the protruding portion 19 projects forward from the concrete C or wraps around the front side. Since the concrete expands due to the elasticity of the projecting portion 19, it is easy to find the installation location of the electric wire box B.

After the electric wire box B is installed as described above, the fragile portion 16 on the outer periphery of the blind plate 15 is broken and the blind plate 15 is removed. By doing so, the boss 53 of the rotating plate 5 faces the first opening 14 of the cover body 1, so that the mounting plate 9 of the electric component can be fixed to the rotating plate 5. Therefore, as shown in FIG. 14, the upper and lower ends of the mounting plate 9 are connected to the front end surface 2 of the cylindrical wall 13 of the cover body 1.
1 and the mounting plate 9 is mounted on the coating cover A using the fastening screws 93 and 93. In this case, when the cover main body 1 is in the normal posture as shown in FIG. 16, the mounting plate 9 may be fixed to the coating cover A by tightening the tightening screws 93. Further, when the cover body 1 is not in the normal posture as shown in FIG.
Is rotated around its axis with respect to the cover body 1 by θ, thereby correcting the attitude of the mounting plate 9, and then tightening the tightening screws 93, 93 to fix the mounting plate 9 to the coating cover A. Good.

In the coating cover A of this embodiment, since the cover body 1 is provided with the blind plate 15 at the beginning, the boss portion 83 of the rotary plate 5 has a height that does not contact the blind plate 15. It is necessary to be. Therefore, when the mounting plate 9 is mounted as shown in FIG. 14 after removing the blind plate 15, a certain gap δ is formed between the mounting plate 9 and the boss portion 83. If the gap δ is large, the bending of the mounting plate 9 when the tightening screw 93 is tightened becomes too large, which may cause inconvenience. In order to avoid such a situation, a bulging portion may be provided on the blind plate 15, and the boss portion 83 may be raised to such an extent that the boss portion 83 protrudes into the bulging portion.

[0035]

According to the present invention, before casting concrete around the electric wire box installed in the space for concrete pouring, a coating cover can be attached to the electric wire box. Even if it does in this way, since the installation attitude | position of an electrical component, such as an outlet and a switch, can be adjusted easily, there exists an effect that the installation workability of an electrical component increases. Moreover, the coating cover of the present invention is
Even if the electric wire box is installed inclined, there is an advantage that the inclination can be adjusted in a wide range without any step.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a coating cover according to the present invention together with an electric wire box.

FIG. 2 is a rear view of a cover main body.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an enlarged sectional view taken along the line IV-IV of FIG. 2;

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 2;

FIG. 6 is an enlarged sectional view taken along the line VI-VI in FIG. 2;

FIG. 7 is a rear view of the rotating plate.

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is an enlarged sectional view taken along line IX-IX of FIG. 7;

FIG. 10 is an enlarged sectional view taken along line XX of FIG. 7;

FIG. 11 is a front view of a coating cover in which the rotating plate 5 is assembled to the cover main body from which the blind plate has been removed.

FIG. 12 is a rear view of the coating cover of FIG. 11;

FIG. 13 is a partially cutaway side view showing a state where concrete is cast around the electric wire box to which the coating cover is attached.

FIG. 14 is a partially cutaway side view showing a state in which a mounting plate of an electric component is attached to a coating cover attached to an electric wire box.

FIG. 15 is an enlarged sectional view taken along line XV-XV of FIG.

FIG. 16 is an operation explanatory view of the coating cover.

FIG. 17 is an operation explanatory view of the coating cover.

FIG. 18 is a schematic front view of a mounting plate.

[Description of Signs] A Filling Cover B Electric Wire Box C Concrete (Wall) 1 Cover Body 5 Rotating Plate 9 Mounting Plate 12 Mounting Seat 13 Cylindrical Wall 14 First Opening Port 15 Blind Plate 16 Weak Part 21 Cylindrical Wall Front end face 22 step 26 slide surface 28 protruding piece 29 mounting surface 51 second opening 52 screw hole 57 ridge 91 screw insertion hole of mounting plate 93 tightening screw 101 front opening of electric wire box 200 electric parts

Claims (3)

(57) [Claims] 1. A cover body attached to a front opening of an electric wire box buried in a wall, the cover main body being attached to the front opening.
Mounting seat attached to the front end of the box side wall to be formed
And a surrounding space protruding forward from the mounting seat portion.
Is the first opening and when the above-mentioned electric wire box is constructed
Cylindrical shape whose front end face is superimposed on the inner surface of concrete formwork
And a wall integrally with the rear end portion of the tubular wall is a rim of the first opening port,
Rotating plate having a second mouth opening which is faced to the first mouth opening is held rotatably about its axis, a position facing to the first opening port of the rim of the upper Symbol second mouth opening, a screw hole is provided clamping screw is inserted through the electrical components to the screw insertion hole of the attachable mounting plate is screwed, the first opening port above
A fragile portion that can be broken at the front end of the cylindrical wall of the cover body
A coating cover for an electric wire box, wherein the cover is covered by a blind plate continuously provided through the cover. The rear end portion of wherein upper Symbol cylindrical wall, and a plurality of projecting pieces are provided to face each other with a distance in the sliding surface and the slide surface of the annular formed in a stepped shape at its rear end The annular projection provided integrally with the outer periphery of the rotary plate between the slide surface and the plurality of protrusions is slidably rotatably fitted and held. Painted cover for electric wire box. 3. A front end surface of the cylindrical wall of the cover body is formed on a mounting surface overlapping with the mounting plate tightened by the tightening screw screwed into the screw hole of the rotating plate. Coating cover for electric wire box described in 3.