JP2010119219A - Wiring box and wiring-box device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring box that prevents deterioration in the strength of sidewalls, even if a recess that avoids contact with a boring blade is formed in the opening end face, and to provide a wiring-box device. <P>SOLUTION: The wiring box 11 includes each magnet 23 that determines the boring position of a through-hole from the wall surface. In the wiring box 11, each recess 13b, 14b, 15a and 16a for avoiding contact between a boring blade and each of the upper sidewall 13; the lower sidewall 14, the left sidewall 15, and the right sidewall 16 are formed at positions straddling from the upper sidewall 13, the lower sidewall 14; and the left sidewall 15 is formed to a rib 18 at a position straddling the right sidewall 16 to the rib 18. Furthermore, a reinforcing wall 18a for connecting inner faces, facing each other, of the recesses 15a, 16a to each other, is formed at positions that are closer to the outer faces of the left sidewall 15 and the right sidewall 16 than to the recesses 15a, 16a on the front faces of the left sidewall 15 and the right sidewall 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wiring box that is installed on the back of a wall and has a front surface facing the wall surface by a circular or elliptical through-hole formed in a wall material that constructs the wall, and the wiring box and an electric punch It is related with the wiring box apparatus which consists of.

  Conventionally, in order to face almost the entire front surface of the wiring box installed on the back side of the wall to the front side of the wall, first, the metal provided in the wiring box is detected from the wall surface with a metal detector, or The magnet provided in the wiring box is detected from the wall surface with a magnetic detector, and the existence position of the wiring box arranged on the back of the wall is detected. Next, when an electric drilling tool is used to drill a through hole in the wall material based on the detected metal or magnet position, the entire front surface of the wiring box placed behind the wall is placed on the wall surface. You can face it.

  By the way, when drilling a through-hole in a wall material using an electric drilling tool, the wiring box installed on the back of the wall may be misaligned due to the drilling blade coming into contact with the opening end surface of the wiring box. The wiring box itself could be damaged. Therefore, a wiring box has been proposed in which contact with the perforation blade can be avoided when the through-hole is formed in the wall material with the perforation blade (see, for example, Patent Document 1).

The wiring box of Patent Document 1 has an elongated square box shape having an opening on the front surface, and two detected portions are provided in the wiring box. In addition, a recess is formed in the opening end face of the wiring box at a position corresponding to a trajectory range through which the drilling blade passes when two through holes are formed with each detected portion as the drilling center. Therefore, according to the wiring box of Patent Document 1, when the through-hole is drilled in the wall material using the punching tool, the contact between the drilling blade and the side wall of the wiring box is avoided by the concave portion. And the wiring box itself is prevented from being damaged.
Japanese Patent Laid-Open No. 10-66225

  However, for example, when an outlet is attached to a wiring box installed on the back of a wall, a load in the front-rear direction of the wall is repeatedly applied to the wiring box when a plug is inserted into and pulled out from the outlet. Here, as in the wiring box of Patent Document 1, when the concave portions are formed on all the side walls and the strength of the side walls is reduced, the side walls are bent and deformed when the plug is inserted into and pulled out from the outlet. There was a problem.

  The present invention has been made by paying attention to such problems existing in the prior art, and its purpose is to reduce the strength of the side wall even if a recess that avoids contact with the drilling blade is formed on the opening end face. It is an object of the present invention to provide a wiring box and a wiring box device that can prevent the above.

  In order to solve the above-mentioned problems, the invention described in claim 1 has a rectangular box shape having an opening on the front surface and surrounded by a plurality of side walls, and is installed on the back of the wall and the wall. A wiring box whose front face is faced to a wall surface by a circular or elliptical through hole drilled in a material, comprising a detected portion for determining a drilling position of the through hole from the wall surface The opening end surface of the wiring box is formed with a recess for avoiding contact between the perforating blade for drilling the through hole and the wiring box, and at least the opening of the wiring box at the opposite side wall. The gist of the invention is that a reinforcing wall is formed at a position closer to the outer surface of the side wall than the concave portion on the end surface to connect the inner surfaces facing each other.

  According to a second aspect of the present invention, in the wiring box according to the first aspect, a rib protruding outward is formed on the outer surface of the opening on the side wall, and at least from the opposite side wall to the rib. The gist is that the concave portion is formed in the straddling position or at least the opposing side wall, and the reinforcing wall is formed on the rib of the side wall in which the concave portion is formed.

  According to a third aspect of the present invention, in the wiring box according to the second aspect, the side wall in which the concave portion is formed has a pedestal that abuts against a side surface of the construction material that bulges outward and constructs the wall. The pedestal is formed integrally with the rib, and the gist is that the recess reaches the pedestal.

  According to a fourth aspect of the present invention, in the wiring box according to the second or third aspect, the ribs are formed on all of the side walls, and the positions extending from all the side walls to the ribs, or all the side walls. The present invention is summarized in that the recess is formed and the reinforcing wall is provided on all the ribs.

  According to a fifth aspect of the present invention, in the wiring box according to the first aspect, a pedestal that abuts against a side surface of a construction material that bulges outward and constructs the wall is formed on the opposing side walls, The gist is that the concave portion is formed in a position straddling the pedestal from the side wall or the side wall facing the reinforcing plate, and the reinforcing wall is formed in the pedestal.

  The gist of the invention described in claim 6 is that, in the wiring box according to claim 5, the concave portion is formed and the reinforcing wall is also formed in the side wall where the pedestal is not formed. .

  The invention according to claim 7 has a circular or oval shape having a square box shape having an opening on the front surface, the opening being surrounded by a plurality of side walls, and installed on the back of the wall and drilled in the wall material. A wiring box device comprising a wiring box whose front face is faced to the wall surface by a through-hole and an electric drilling tool having a drilling blade for drilling the through-hole, wherein the drilling blade of the electric drilling tool comprises: , Made of an endless metal plate made of spring, and the wiring box includes a detected portion for determining a drilling position of the through hole from the wall surface, and the opening end surface of the wiring box has the A recess for avoiding contact between the drilling blade for forming a through hole and the wiring box is formed, and at least the opposing side wall is closer to the outer surface of the side wall than the concave portion at the opening end surface of the wiring box. The position is It is summarized as the reinforcing walls for connecting the inner surfaces facing each other of the serial recess is formed.

  According to the present invention, it is possible to prevent a reduction in the strength of the side wall even if a recess that avoids contact with the perforating blade is formed on the opening end face.

  Hereinafter, an embodiment embodying a wiring box of the present invention will be described with reference to FIGS. In the following description, “upper” and “lower” of the wiring box are the directions of the arrow Y1 shown in FIG. 1A, and “left” and “right” are the directions of the arrow Y2 shown in FIG. Is the left-right direction, and “front” and “rear” are the directions of the arrow Y3 shown in FIG.

  As shown in FIG. 1, the wiring box 11 includes a box body B formed in a bottomed square box shape having an opening K on the front surface (one surface). The box body B is formed of a bottom wall 12 having a rectangular plate shape, and an upper side wall 13, a lower side wall 14, a left side wall 15, and a right side wall 16 as side walls erected from the periphery of the bottom wall 12. In addition, the opening K is surrounded by the upper side wall 13, the lower side wall 14, the left side wall 15, and the right side wall 16.

  The upper side wall 13 and the lower side wall 14 are formed with wire drawing holes 13a, 14a, and the inner surfaces of the upper side wall 13 and the lower side wall 14 are provided with boss portions 21 projecting inwardly. A screw hole 21a through which a screw 22 (see FIG. 7) can be inserted is formed in the front surface of the boss portion 21. A cylindrical body 24 is erected at the center of the long wall direction and the short side direction of the bottom wall 12, and a magnet 23 as a detected part is provided at the front end portion (tip portion) of the cylindrical body 24. Is attached. Further, on the outer surfaces of the upper side wall 13, the lower side wall 14, the left side wall 15, and the right side wall 16, the outer surface on the opening K side of the wiring box 11 extends over the entire circumference of the box body B and protrudes outward. Ribs 18 are formed.

  Concave portions 13 b and 14 b that are recessed toward the bottom wall 12 are formed at positions extending from the front surfaces of the upper side wall 13 and the lower side wall 14 to the ribs 18 as opening end surfaces of the wiring box 11. The recesses 13b, 14b are formed so as to extend over substantially the entire long side direction of the upper side wall 13 and the lower side wall 14. The recesses 13b and 14b are formed so as to be recessed to a position retracted from the front end surface of the boss portion 21 toward the bottom wall 12 side.

  As shown in FIG. 1A, the left side wall 15 is provided with a first fixing portion 17 for fixing the wiring box 11 in contact with the side surface of a wooden pole T (see FIG. 3) as a construction material. It has been. The first fixing portion 17 includes a plurality of first pedestals 17 a that bulge outward from the outer surface of the left side wall 15. A first abutment surface 17c that abuts the first fixing portion 17 against the side surface of the wooden pole T is formed by the left end surface (tip surface) of the first pedestal 17a. Further, the first fixing portion 17 is formed with a first fixing hole 17b that penetrates each first pedestal 17a from the inner surface of the left side wall 15 and opens to the first contact surface 17c. Further, the first pedestal 17a is provided with a claw 17d protruding into the side surface of the wooden pole T when the first pedestal 17a is brought into contact with the side face of the wooden pole T.

  And the rib 18 formed in the left side wall 15 is formed using the bulging length from the left side wall 15 outer surface of the 1st base 17a, and the rib 18 and the 1st base 17a are integrally molded. Yes. The first contact surface 17 c is located on the same plane as the outer surface of the rib 18 formed on the left side wall 15.

  As shown in FIG. 1B, the right side wall 16 is provided with a second fixing portion 19 for fixing the wiring box 11 in contact with the side surface of a lightweight steel material (not shown). The second fixing portion 19 includes a plurality of second pedestals 19 a that bulge outward from the outer surface of the right side wall 16. A second abutting surface 19c that abuts the second fixing portion 19 against the side surface of the lightweight steel material is formed by the right end surface (tip surface) of the second pedestal 19a. Further, the second fixing portion 19 is formed with a second fixing hole 19b that penetrates each second pedestal 19a from the inner surface of the right side wall 16 and opens to the second contact surface 19c. When the wiring box 11 is arranged so that the front surface is flush with the front surface of the lightweight steel member, the position of the second fixing hole 19b is set at the second fixing portion 19 so as to face the lip portion of the lightweight steel member. Has been.

  And the rib 18 formed in the right side wall 16 is formed using the bulging length from the right side wall 16 of the 2nd base 19a, and the rib 18 and the 2nd base 19a are integrally molded. . The second contact surface 19 c is located on the same plane as the outer surface of the rib 18 formed on the right side wall 16.

  As shown in FIGS. 1A, 1 </ b> B, and 2, the first pedestal is directed toward the bottom wall 12 at a position extending from the front surface of the left side wall 15 to the rib 18 as the opening end surface of the wiring box 11. A recess 15a that is recessed to 17a is formed. Further, a recess 16 a that is recessed toward the second pedestal 19 a toward the bottom wall 12 is formed at a position extending from the front surface of the right side wall 16 to the rib 18 as an opening end surface of the wiring box 11. The recesses 15a, 16a are formed so as to extend over substantially the entire long side direction of the left side wall 15 and the right side wall 16. The recesses 15a and 16a are formed so as to be recessed to a depth that does not reach the first fixing hole 17b and the second fixing hole 19b in the first pedestal 17a and the second pedestal 19a. The recesses 15a and 16a are formed so as to be continuous with the opening K of the box body B.

  Further, in the rib 18, a reinforcing wall 18a is formed at a position closer to the outer surface of the left side wall 15 and the right side wall 16 than the recesses 15a and 16a. The reinforcing wall 18a is formed so as to connect the inner surfaces facing each other in the long side direction of the recesses 15a and 16a. The reinforcing wall 18a closes the openings of the recesses 15a and 16a toward the outer surfaces of the left side wall 15 and the right side wall 16, and the front surface (opening end surface) of the reinforcing wall 18a is flush with the front surface of the rib 18. Is located. A display portion 18b for displaying the central portion of the left side wall 15 and the right side wall 16 in the long side direction is provided at the central portion in the long side direction of each reinforcing wall 18a which is the outermost portion in the left and right direction of the box body B. .

  The wiring box 11 having the above configuration is installed behind the wall W as shown in FIG. The wall W is constructed by standing wall materials Wa on the front and rear sides of the wooden pole T so as to sandwich the wooden pole T, and the wiring box 11 is attached to the side of the wooden pole T using the first fixing portion 17. By being fixed, it is installed on the back side of the wall W. As shown in FIG. 7, a through hole Wb is formed in the wall material Wa so that the front surface of the wiring box 11 installed on the back of the wall W faces the front surface of the wall W. The through hole Wb is formed so as to form a vertically long ellipse shape in the vertical direction.

  The through hole Wb is formed in the wall material Wa using the electric punch 30. As shown in FIG. 5, the electric punch 30 includes a cup-shaped casing 31 whose one end has an oblong shape, and a shaft cylinder 32 is attached to the other end of the casing 31. A spindle (not shown) is rotatably supported by the shaft cylinder 32, and a drilling blade 33 is attached to one end of the spindle via a drive mechanism (not shown) disposed in the casing 31. An electric drill 34 as a drive source is attached to the other end.

  The perforating blade 33 is disposed in the casing 31 and rotates in a vertically long elliptical shape along the inner peripheral surface of the casing 31. The perforating blade 33 is made of an endless metal plate having a spring property, and one end side of the metal plate is attached to the drive mechanism, and a blade portion 33a is formed on the other end side of the metal plate. The blade portion 33 a of the punching blade 33 is exposed to the outside of the casing 31 from the opening on one end side of the casing 31. When the drilling blade 33 is rotated by the electric drill 34, the locus H of the drilling blade 33 has a vertically long elliptical shape as shown by a two-dot chain line in FIG.

  In the locus H of the drilling blade 33, the length H1 in the long side direction is slightly longer than the length L1 between the upper end surface of the upper boss portion 21 and the lower end surface of the lower boss portion 21 in the wiring box 11. It has become. For this reason, when the trajectory H of the drilling blade 33 is formed around the magnet 23, the upper end of the trajectory H passes through the recess 13b formed above the upper end surface of the upper boss portion 21, and the lower end of the trajectory H. Passes through a recess 14b formed below the lower end surface of the lower boss portion 21.

  In the trajectory H of the punching blade 33, the length H2 in the short side direction is slightly shorter than the length L2 between the inner surface of the left side wall 15 and the inner surface of the right side wall 16 in the wiring box 11. For this reason, when the trajectory H of the drilling blade 33 is formed around the magnet 23, the left end of the trajectory H passes inside the inner surface of the left side wall 15, and the right end of the trajectory H is inside the inner surface of the right side wall 16. Is supposed to pass through. And the wiring box apparatus is comprised from the wiring box 11 of the said structure, and the electric drilling tool 30. FIG.

  In order to install the wiring box 11 having the above configuration on the wall W and to install the outlet 40 as a wiring device on the wall W using the wiring box 11, first, the wiring box for the side surface of the preset wooden pole T is set. 11, the first contact surface 17 c of the first fixing portion 17 and the outer surface of the rib 18 are brought into contact with each other. At this time, the display portion 18b provided on the reinforcing wall 18a of the left side wall 15 is aligned with the central portion of the fixed position on the wooden pole T, and the first abutting surface 17c is aligned with the wiring box 11 positioned at the fixed position. Is brought into contact with the side surface of the wooden pole T. At this time, the movement of the wiring box 11 along the side surface of the wooden column T is suppressed by causing the claw 17d to bite into the side surface of the wooden column T.

  Next, as shown in FIG. 3, the screw 41 is inserted into the first fixing hole 17 b from the inside of the wiring box 11, the screw 41 is fixed to the wooden pole T, and the wiring box 11 is fixed to the side surface of the wooden pole T. To do. In the wiring box 11, the front surfaces of the upper side wall 13, the lower side wall 14, the left side wall 15, and the right side wall 16, the front surface of the rib 18 (reinforcing wall 18a), and the front surface of the boss portion 21 are the front surface of the wooden pole T. It is fixed to the wooden pole T so as to be positioned on the same plane as the (surface on the front side of the wall W).

  Next, when the wall material Wa is erected so as to sandwich the wooden pole T from both the front and rear sides, and the wall W is constructed, the wiring box 11 is installed on the back of the wall W. In the installed state of the wiring box 11, the front surface of the rib 18 and the front surface of the boss portion 21 are in contact with the back surface of the front wall material Wa. Next, the position of the magnet 23 is detected from the wall W surface using a magnet detector (not shown), and the position of the wiring box 11 is detected. Next, using the electric punch 30, as shown in FIG. 6, an elliptical through hole Wb extending vertically in the long side direction (vertical direction) of the wiring box 11 is formed in the wall member Wa as shown in FIG. 6. Drill. That is, the drilling blade 33 of the electric drilling tool 30 is rotated into an oblong shape by the electric drill 34, and the drilling blade 33 is pressed against the wall material Wa so that the magnet 23 is positioned at the center of the drilling blade 33. Then, the vertically long elliptical through-hole Wb is formed in the wall material Wa by the punching blade 33.

  At this time, in the upper side wall 13 and the lower side wall 14, concave portions 13 b and 14 b are formed at positions corresponding to the trajectory H through which the drilling blade 33 passes. For this reason, it is avoided that the drilling blade 33 contacts the upper side wall 13 and the lower side wall 14. Further, since the recesses 15a and 16a are formed on the left side wall 15 and the front surface of the right side wall 16 and the front surface of the rib 18 at positions outside the trajectory H through which the drilling blade 33 passes, the drilling blade 33 is located on the left side. Contact with the wall 15 and the right side wall 16 is prevented. Here, even if the trajectory H of the drilling blade 33 is slightly shifted in any of the upper, lower, left and right directions from the ellipse centered on the magnet 23, the recess 13b, 14b, 15a, 16a causes the drilling blade 33 to move to the upper side wall 13, Contact with the lower side wall 14, the left side wall 15 or the right side wall 16 is avoided.

  When the through hole Wb is drilled in the wall material Wa, substantially the entire front surface (the pair of boss portions 21) of the wiring box 11 is exposed to the surface of the wall W through the through hole Wb. The opening K faces the wall W surface. Next, as shown in FIG. 7, a cable (not shown) is connected to the outlet 40, and the screws 22 inserted through the upper and lower portions of the mounting frame 42 holding the outlet 40 are connected to the upper and lower bosses of the wiring box 11. The attachment frame 42 is attached to the wiring box 11 by screwing with the portion 21. Then, the outlet 40 is attached to the wiring box 11 and the outlet 40 is installed on the wall W.

  When the wiring box 11 and the outlet 40 are installed on the wall W, the front surfaces of the upper side wall 13, the lower side wall 14, the left side wall 15, and the right side wall 16 and the front side of the rib 18 (reinforcing wall 18a) are made of the wall material Wa. It is in contact with the back side. Therefore, no gap is formed between the front surfaces of the left wall 15 and the right wall 16 and the back surface of the wall material Wa.

According to the above embodiment, the following effects can be obtained.
(1) A recess 13b is formed on the upper wall 13 of the wiring box 11, a recess 14b is formed on the lower wall 14, a recess 15a is formed at a position extending from the left side wall 15 to the rib 18, and a recess 16a is formed at a position extending from the right side wall 16 to the rib 18. Formed. For this reason, when drilling the through hole Wb in the wall material Wa, contact between the perforating blade 33 and the side walls 13 to 16 can be avoided. Then, reinforcing walls 18a are formed on the ribs 18 of the left side wall 15 and the right side wall 16 that extend in the long side direction of the wiring box 11 and connect the inner surfaces facing the long side direction of the recesses 15a and 16a. For this reason, the reinforcement wall 18a can suppress a decrease in strength against bending deformation or twisting in the long side direction of the left side wall 15 and the right side wall 16. As a result, the left side wall 15 and the right side wall 16 are deformed even when a plug is inserted and removed from the outlet 40 attached to the wiring box 11 and a load in the front-rear direction is repeatedly applied. Can be prevented.

  In particular, when the wiring box 11 is pulled to the front side of the wall W through the outlet 40 in order to pull out the plug from the outlet 40, the front surface of the reinforcing wall 18a comes into contact with the back surface of the wall material Wa. For this reason, even if the recessed parts 15a and 16a are formed, it is prevented that the left side wall 15 and the right side wall 16 bend, and as a result, it is prevented that the wiring box 11 deform | transforms.

  (2) On the opening side of the box body B, a rib 18 extending over the entire circumference of the box body B is formed. The recesses 15 a and 16 a of the left side wall 15 and the right side wall 16 are formed at positions extending from the left side wall 15 and the right side wall 16 to the rib 18. For this reason, for example, the ribs 18 are not formed, and the recesses 15a and 16a can be made larger than when the recesses 15a and 16a are formed within the thickness of the left side wall 15 and the right side wall 16, and the reinforcing wall 18a The thickness can be increased. Therefore, the strength of the reinforcing wall 18a can be increased while avoiding contact between the drilling blade 33 and the left and right walls 15 and 16.

  (3) The reinforcing wall 18 a is formed on the left side wall 15 and the right side wall 16 that extend in the long side direction of the wiring box 11. Therefore, by forming the reinforcing wall 18a so as to correspond to the left side wall 15 and the right side wall 16, it is possible to prevent the left side wall 15 and the right side wall 16 from being reduced in strength and to be prevented from being deformed.

  (4) The wiring box 11 includes a first fixing portion 17 for fixing the wiring box 11 to the wooden pole T on the left side wall 15 and a second fixing portion 19 for fixing the wiring box 11 to the lightweight steel material. Is provided on the right side wall 16. The rib 18 formed on the left side wall 15 is formed by using the bulge from the left side wall 15 of the first pedestal 17a in the first fixing part 17, and the rib 18 formed on the right side wall 16 is formed on the second fixing part. 19, the second pedestal 19a is formed by bulging from the right side wall 16. The recesses 15 a and 16 a are formed at positions extending from the left side wall 15 and the right side wall 16 to the rib 18, and the reinforcing wall 18 a is formed by the rib 18. Therefore, the reinforcing wall 18a can be formed without increasing the size of the wiring box 11, and the strength of the left side wall 15 and the right side wall 16 can be prevented from being reduced, and deformation can be prevented.

  (5) In the electric drilling tool 30, the punching blade 33 for drilling the through hole Wb is made of a thin metal plate having a spring property. For this reason, when the perforation blade 33 comes into contact with the side walls 13, 14, 15 and 16 when the through hole Wb is formed, the perforation blade 33 is deformed and the through hole Wb can be formed in a desired shape. Disappear. In the wiring box 11, recesses 13 b, 14 b, 15 a, 16 a are formed in order to avoid contact with the drilling blade 33. Therefore, when the through hole Wb is drilled by the electric drilling tool 30 using the drilling blade 33, when the wiring box 11 of the present embodiment is used, the vertically long elliptical shape in which the through hole Wb is desired without deforming the drilling blade 33 is used. Can be drilled.

  (6) The ribs 18 formed on the left side wall 15 and the right side wall 16 are integrally formed with the first pedestal 17a and the second pedestal 19a, and the ribs 18 are reinforced at positions near the outer surfaces of the left side wall 15 and the right side wall 16. A wall 18a is formed. For this reason, the reinforcing wall 18a is provided on the outermost side in the left-right direction in the wiring box 11, and a display portion 18b is formed on the reinforcing wall 18a. And when the 1st contact surface 17c is made to contact | abut to the side surface of the wooden pillar T, the display part 18b is displayed on the position nearest to the side surface of the wooden pillar T. FIG. Therefore, when the wiring box 11 is fixed to the wooden pole T, the display unit 18b is easily visible, and the work of fixing the wiring box 11 to the fixing position of the wooden pole T is facilitated.

In addition, you may change the said embodiment as follows.
In the bottom wall 12, the cylindrical body 24 is erected on both sides in the long side direction of the box main body B, and a magnet 23 is provided in each cylindrical body 24, and a circular through hole Wb centering on the magnet 23 is provided. May be formed in the wall material Wa, and the two circular through holes Wb may be connected so that the front surface of the wiring box 11 faces the wall W surface. Alternatively, a circular through hole Wb centered on one of the magnets 23 is formed in the wall material Wa, and a part of the opening K of the box body B faces the front surface of the wall W. A through hole Wb may be formed in the wall material Wa so as to face the wall W surface. In this case, the electric drilling tool 30 uses a cylindrical drilling blade.

  On the bottom wall 12, a cylindrical body 24 is erected on one side of the box body B in the long side direction, and a magnet 23 is provided on the cylindrical body 24, and a circular transparent body centering on the magnet 23 is provided. After the hole Wb is formed in the wall material Wa and a part of the opening K of the box body B is exposed to the surface of the wall W, the through hole Wb is formed in the wall material Wa so that the remaining opening K faces the surface of the wall W. You may drill.

  ○ After detecting the position of the wiring box 11 using the magnet 23, confirming the position of the opening K of the wiring box 11 and setting the center position of the opening K, the through hole Wb is formed using the center position. May be.

  The wiring box may have two or more box bodies connected in the left-right direction and having openings at two or more locations. In such a wiring box, when one magnet is provided at the center in the long side direction of each box body, the longitudinally centered magnet is provided in each opening of each box body using the electric punch 30. An elliptical through hole is drilled. In addition, when magnets are provided on both sides of each box body in the long side direction, each box body has a circular through-hole centered on each magnet, and two circular shapes. The front surface of the wiring box may face the wall W surface by connecting the through holes. Alternatively, in each box main body, a circular through-hole centered on one of the magnets is drilled in the wall material, and a part of the opening of the box main body faces the wall surface. You may perforate a wall material so that it may face a front. Or, when a magnet is provided on one side of the long side direction of each box body, a circular through-hole centered on the magnet is drilled in the wall material for each box body, and the box body After a part of the opening faces the wall surface, a through hole may be formed in the wall material so that the remaining opening faces the wall surface. Note that the through hole drilled in each form does not have to be centered on the magnet, but the position of the wiring box is detected using the magnet, and the position of the opening of the wiring box is confirmed. After setting the position, it may be drilled using the center position.

  The wiring box may have two or more box bodies connected in the left-right direction and having openings at two or more locations. In this case, since the length of the entire wiring box in the left-right direction is longer than the length in the up-down direction, it is preferable that reinforcing walls are provided on the upper side wall and the lower side wall extending in the left-right direction of the box body.

  In the embodiment, the recesses 15 a and 16 a may be formed within the thickness of the left side wall 15 and the right side wall 16, and the reinforcing wall 18 a may be formed on the rib 18 of the left side wall 15 and the right side wall 16.

  In the embodiment, the ribs 18 of the upper side wall 13 and the lower side wall 14, which are closer to the outer surfaces of the upper side wall 13 and the lower side wall 14 than the concave parts 13 b, 14 b of the upper side wall 13 and the lower side wall 14, You may provide the reinforcement wall which connects the inner surfaces which oppose a long side direction. That is, the recesses 13b, 14b, 15a, 16a are provided at positions extending from all the side walls 13-16 to the rib 18, and the openings of the recesses 13b, 14b, 15a, 16a to the outside of the box body B are closed. The rib 18 may be provided with a reinforcing wall 18a. If comprised in this way, entry of the dust etc. from the outside to the inside of the box main body B can be prevented.

  In the embodiment, the recesses 13b and 14b are formed in the thicknesses of the upper and lower sidewalls 13 and 14, and the upper and lower sidewalls 13 and 14 are positioned closer to the outer surfaces of the upper and lower sidewalls 13 and 14 than the recesses 13b and 14b. The rib 18 of the side wall 14 is provided with a reinforcing wall that connects the inner surfaces facing each other in the long side direction of the recesses 13b and 14b. In addition, recesses 15 a and 16 a are formed within the thickness of the left side wall 15 and the right side wall 16, and a reinforcing wall 18 a is formed on the rib 18 of the left side wall 15 and the right side wall 16. That is, the recesses 13b, 14b, 15a, 16a are provided on all the side walls 13-16, and the ribs 18 are provided with reinforcing walls so as to close the openings of the recesses 13b, 14b, 15a, 16a to the outside of the box body B. 18a may be provided.

  As shown in FIG. 8, the wiring box 11 is not provided with the first fixing portion 17 and the second fixing portion 19 on the left side wall 15 and the right side wall 16, and only the rib 18 is formed on the left side wall 15 and the right side wall 16. It may be what was done. The recesses 15 a and 16 a may be formed at positions extending from the left side wall 15 and the right side wall 16 to the rib 18, and the reinforcing wall 18 a may be formed by the rib 18.

  As shown in FIG. 9, the wiring box 11 may be one in which the rib 18 is not formed on the box body B. In this case, a recess 15a is formed at a position extending from the left side wall 15 to the first pedestal 17a, a reinforcing wall 18a is formed using the first pedestal 17a, and a recess is set at a position extending from the right side wall 16 to the second pedestal 19a. 16a is formed, and the reinforcing wall 18a is formed using the second pedestal 19a.

  In the wiring box 11 shown in FIG. 9, the upper side wall 13 and the lower side wall 14 are located closer to the outer surfaces of the upper side wall 13 and the lower side wall 14 than the recesses 13 b and 14 b of the upper side wall 13 and the lower side wall 14. Further, the lower wall 14 may be provided with a reinforcing wall that connects the inner surfaces facing each other in the long side direction of the recesses 13b, 14b.

The front surface of the reinforcing wall 18a may be located slightly away from the front surface of the rib 18 toward the bottom wall 12 side.
The wiring box 11 may be one in which the rib 18 is not formed on the box body B and the first fixing portion 17 and the second fixing portion 19 are not provided. In this case, the left side wall 15 and the right side wall 16 Concave portions 15a and 16a are formed within the thickness of the left side wall, and reinforcing walls are formed on the left and right side walls 15 and 16.

  ○ A metal foil may be bonded to the front end of the cylindrical body 24 or a metal plate may be attached, and these metal foil or metal plate may be used as a detected portion. In this case, the metal foil or metal plate may be a metal detector. It is detected using.

  The wiring box 11 may be fixed to a lightweight steel material as a construction material using the second fixing portion 19.

(A) And (b) is a perspective view which shows the wiring box of embodiment. The front view which shows the wiring box of embodiment. Sectional drawing which shows the state which fixed the wiring box to the wooden pole. The front view which shows a wiring box. The partial perspective view which shows an electric punch. The front view which shows the state which perforated | pierced the wall material. Sectional drawing which shows the state which attached the outlet socket to the wiring box. The perspective view which shows another example of a wiring box. The perspective view which shows another example of a wiring box.

Explanation of symbols

  K: Opening, T: Wooden pillar as construction material, W: Wall, Wa ... Wall material, Wb ... Through hole, 11 ... Wiring box, 13 ... Upper side wall, 14 ... Lower side wall, 15 ... Left side wall, 16 ... Right side Wall, 13b, 14b, 15a, 16a ... concave portion, 17a ... first pedestal, 18 ... rib, 18a ... reinforcing wall, 19a ... second pedestal, 23 ... magnet as detected part, 30 ... electric punch, 33 ... Perforated blade.

Claims (7)

An opening is formed in the front surface, and the opening is surrounded by a plurality of side walls to form a square box. The front wall is formed by a circular or elliptical through hole that is installed on the back of the wall and drilled in the wall material. A wiring box facing the front,
A to-be-detected portion for determining the drilling position of the through hole from the wall surface;
The opening end surface of the wiring box is formed with a recess for avoiding contact between the drilling blade for drilling the through hole and the wiring box,
Furthermore, the wiring box in which the reinforcement wall which connects the opposing inner surfaces of the said recessed part is formed in the position which is near the outer surface of the said side wall from the said recessed part in the opening end surface of the said wiring box at least in the said opposing side wall.   A rib projecting outward is formed on the outer surface of the opening side of the side wall, and the recess is formed at least at a position straddling the rib from the facing side wall, or at least the facing side wall, and The wiring box according to claim 1, wherein the reinforcing wall is formed on a rib of the side wall in which a recess is formed.   The side wall in which the recess is formed is formed with a pedestal that bulges outward and contacts the side surface of the construction material that constructs the wall, and the pedestal is integrally formed with the rib, The wiring box according to claim 2, wherein the concave portion has reached.   The ribs are formed on all of the side walls, the recesses are formed on the positions extending from all the side walls to the ribs, or on all the side walls, and the reinforcing walls are provided on all of the ribs. The wiring box according to claim 2 or claim 3.   A pedestal that bulges outward and contacts the side surface of the construction material that constructs the wall is formed on the opposite side wall, and the concave portion is formed at a position straddling the pedestal from the side wall or on the opposite side wall. The wiring box according to claim 1, wherein the reinforcing wall is formed on the pedestal.   The wiring box according to claim 5, wherein the recess is formed on the side wall where the pedestal is not formed, and the reinforcing wall is formed. An opening is formed in the front surface, and the opening is surrounded by a plurality of side walls to form a square box. The front wall is formed by a circular or elliptical through hole that is installed on the back of the wall and drilled in the wall material. A wiring box facing the front,
A wiring box device comprising an electric drill having a drilling blade for drilling the through hole,
The drilling blade of the electric drilling tool is made of an endless metal plate made of spring,
The wiring box includes a detected portion for determining a drilling position of the through hole from the wall surface, and a drilling blade for drilling the through hole and the wiring box on an opening end surface of the wiring box. A recess is formed to avoid contact of the recesses, and at least the opposing side walls connect the inner surfaces facing each other at a position closer to the outer surface of the side wall than the recess on the opening end surface of the wiring box. A wiring box device in which a reinforcing wall is formed.

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