JP4447562B2 - Wiring box installation method and wiring box - Google Patents

Description

  The present invention relates to a method of installing a wiring box on a building wall and a wiring box having a box-like space in which a side wall is erected on a bottom wall to form a bottomed box shape and open to a side facing the bottom wall.

  Generally, when a wiring device such as a switch is installed on a building wall, a wiring box is installed on the building wall. In addition, a cable connected to the wiring device is drawn into the wiring box, and this cable is inserted into a wire protection tube connected to the wiring box and protected. The electric wire protection tube is a flexible tube made of a synthetic resin material, in which a ring-shaped crest and a ring-shaped trough are repeatedly formed.

  Moreover, as said wiring box, the box for electrical installations (wiring box) disclosed by patent document 1 is mentioned, for example. This electrical installation box has a box body in which a side wall is erected on the periphery of a bottom wall having a square plate shape. A protective tube holding port is formed in the side wall of the box body. Further, the side wall is formed with a notch opening portion that opens at an edge of the side wall on the bottom wall side, and communicates with the protective tube holding port portion, and the bottom wall has an opening portion connected to the notch opening portion. Is formed. The protective tube holding port, the cutout port and the opening are each closed by a cover plate. Further, projecting pieces are formed opposite to each other at the boundary between the protective tube holding port and the cutout port.

  As a method of installing the wiring apparatus on the building wall using the electric construction box having the above-described configuration, there is a method of fixing the electric construction box to the pillar before the building wall is constructed with a pair of wall materials (a so-called leading method). . In this tipping method, first, the electrical installation box is fixed to the side surface of the column, and then the protective tube holding port portion, the cutout port portion, and the opening portion that are necessary for connecting the wire protective tube are closed. Remove the lid. Next, the wire protective tube is moved in the radial direction toward the protective tube holding port, inserted into the opening and the cutout port, and further pushed into the back. Then, the protective tube holding port is fitted into the ring-shaped valley, and the wire protective tube is held (connected) to the side wall. Further, the pair of projecting pieces are configured to restrict the wire protection tube from being pulled out from the notch opening portion held in the protection tube holding port portion. Thereafter, the cable is inserted into the electric wire protection tube, and the cable is drawn into the electric installation box.

  Then, a building wall is constructed by standing a pair of wall materials so that the opening of the electrical installation box faces the front side of the building wall. Thereafter, a through-hole is formed in the wall material on the front side of the building wall so that the electrical installation box faces the front side of the building wall, and the cable is pulled out to the front side of the building wall to connect the cable and the wiring device. Then, after the wiring apparatus is accommodated in the electrical installation box, the opening of the electrical installation box is closed by a decorative plate or the like, and the wiring apparatus is installed on the building wall.

Moreover, as a method of installing a wiring apparatus on a building wall using an electrical installation box, there is a method of fixing the electrical installation box to the building wall after building the building wall (so-called retrofitting method) in addition to the above-mentioned attachment method. To do. In this retrofitting method, after the building wall is constructed, a through hole is formed in the wall material on the front side of the building wall, and the electric wire protection tube is drawn out on the front side of the building wall. Next, as described above, the wire protection tube is held (connected) in the protection tube holding port from which the cover plate has been removed. Then, the drawn-out electric wire protection tube is accommodated in the building wall through the through hole, and the electric installation box is further accommodated in the building wall through the through hole. Then, the electrical installation box is fixed to the wall material with the opening of the electrical installation box facing the front side of the building wall, and then the cable is pulled out to the front side of the wall to connect the cable and the wiring device. Then, after the wiring apparatus is accommodated in the electrical installation box, the opening of the electrical installation box is closed by a decorative plate or the like, and the wiring apparatus is installed on the wall.
Japanese Utility Model Publication No. 7-11822

  By the way, in the retrofit method for the electrical installation box, the electrical installation box is fixed to the building wall through the through hole with the wire protection tube connected thereto. At this time, since it is difficult to bend the electric wire protection tube, the electrical installation box to which the electric wire protection tube is connected passes through the through hole only in an inclined state with respect to the wall surface (vertical direction) of the building wall. I can't. In other words, the electrical installation box to which the wire protection tube is connected cannot pass through the through holes that are formed slightly larger than the outer size of the electrical installation box. For this reason, in order to be able to pass through the electrical installation box to which the wire protection tube is connected, a through hole much larger than the outer shape of the electrical installation box must be drilled in the building wall. It should be noted that, even if a cable, particularly a large-diameter cable that is difficult to bend, is pulled into the electrical installation box instead of the electric wire protective tube, the through hole is provided in the electrical installation box so that the electrical installation box can pass through. It must be much larger than the outer shape. Therefore, in the method of retrofitting the electrical installation box, when the electrical installation box is accommodated in the through hole, a large gap is formed between the electrical installation box and the through hole, and the electrical installation box is fixed to the wall material. In the case of insufficient, there has been a problem such that the electrical installation box rattles in the through hole.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to allow pipes or cables to be inserted into the insertion hole after passing the wiring box through the through hole. An object of the present invention is to provide a wiring box installation method and a wiring box capable of suppressing the increase in size and preventing the occurrence of problems caused by the increase in size.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a side wall is erected on the bottom wall to form a bottomed box shape, and has a box inner space that opens to the side facing the bottom wall. A method of installing a wiring box on a building wall, wherein the pipe or cable is moved on the side wall by moving flexible pipes or cables along the radial direction toward the bottom wall. An insertion port that can be inserted is formed open to the bottom wall side, and a finger inserted into the inner space of the box from the opening can be projected to the outside of the wiring box on the bottom wall. A through hole is formed in communication with the insertion port, a through hole is formed in the building wall through which the wiring box can be inserted from the bottom wall side, and the wiring box is inserted into the through hole from the bottom wall side. Place the opening facing the front side of the building wall, from the opening Insert the hand into the interior space of the box, project the finger of the hand from the through hole to the outside of the wiring box, lock the finger on the pipes or cables arranged in the building wall, and place the hand on the building wall The gist is to pull the pipes or cables to the bottom wall side by moving them to the front side, and after inserting the pipes or cables into the insertion port, fix the wiring box to the building wall.

  The invention according to claim 5 has a bottomed box shape in which a side wall is erected on the peripheral edge of the bottom wall, and has a box inner space opened to the side facing the bottom wall, and is drilled in a building wall. A wiring box installed on the building wall from the formed through-hole, wherein the side wall is moved by moving flexible pipes or cables along the radial direction toward the bottom wall. An insertion port through which tubes or cables can be inserted is formed open to the bottom wall side, and fingers of the hand inserted into the box inner space from the opening are formed on the bottom wall outside the wiring box. The gist of the invention is that a through-hole capable of protruding to the right is formed in communication with the insertion port.

  Therefore, according to the invention described in claim 1 or 5, when the wiring box is installed on the building wall, the pipes or cables are moved to the bottom wall side with a finger protruding from the through hole to the outside of the wiring box. It becomes possible to draw, and a tube or cables can be inserted into the insertion port as it is. For this reason, it is possible to insert tubes or cables into the insertion port of the wiring box even after the wiring box is passed through the through hole and the wiring box is accommodated in the building wall. Therefore, after the pipes or cables are pulled out to the front side of the building wall and inserted into the insertion port of the wiring box, the wiring box into which the pipes or cables are inserted passes through the through hole and is accommodated in the building wall. No need to do work. As a result, in order to allow the through hole to pass through the wiring box together with the drawn pipes or cables, the through hole does not increase in size, and the size of the through hole is slightly larger than the outer shape of the wiring box. Can be size.

  Invention of Claim 2 is the installation method of the wiring box of Claim 1, After at least one part of the said through-hole is obstruct | occluded with the cover member, The cancellation | release state of the through-hole by the said cover member is cancelled | released, The gist is to project the finger from the through hole to the outside of the wiring box.

  According to the second aspect of the present invention, the bottom wall is closed by the lid member until the wiring box is installed on the building wall, and the rigidity can be maintained high. Therefore, for example, the wiring box can be prevented from being deformed or damaged during transportation of the wiring box.

  According to a third aspect of the present invention, in the wiring box installation method according to the second aspect, the lid member closes the through hole separately from the bottom wall or the lid member and is integrally formed with the bottom wall. The lid member is connected to another lid member through a hinge portion, and after the pipe or cable is inserted into the insertion port, the hinge portion is rotated by bringing the lid member into contact with the building wall. The gist is to rotate the lid member in the direction of closing the through-hole as a moving center. According to the invention described in claim 3, when the wiring box is accommodated in the building wall, the opening degree of the through hole can be reduced by the lid member. Then, after the installation of the wiring box, when the pipes or cables inserted into the insertion port move in the direction of coming out of the insertion port, the pipes or cables come into contact with the lid member, so that they come out of the insertion port. Can be regulated.

  The gist of a fourth aspect of the present invention is the wiring box installation method according to the third aspect, wherein the lid member is rotated toward the outside of the wiring box with the hinge portion as a rotation center. . According to the fourth aspect of the present invention, it is possible to prevent the rotated lid member from obstructing the insertion of the hand into the space in the box, and further, the pipe or cable into the insertion port. During the insertion of the cable, it is possible to prevent the rotated lid member from obstructing the insertion of the pipes or cables.

  According to a sixth aspect of the present invention, in the wiring box according to the fifth aspect, the through-hole is at least partially closed by a lid member, and the lid member is the bottom wall or the lid member. Separately closes the through hole and is connected to another lid member integrally formed on the bottom wall via a hinge part, and the lid member is rotatable in the direction to open the through hole with the hinge part as a rotation center. The gist is that it is formed. According to the sixth aspect of the present invention, the bottom wall is closed by the lid member and the rigidity can be maintained high until the wiring box is installed on the building wall. Therefore, for example, the wiring box can be prevented from being deformed or damaged during transportation of the wiring box.

  The gist of a seventh aspect of the present invention is that, in the wiring box according to the sixth aspect, the lid member is coupled to the periphery of the through hole by a coupling piece. According to the seventh aspect of the present invention, by separating the connecting piece, the lid member can be separated from the peripheral edge of the through-hole so as to be rotatable, leaving the hinge portion. Therefore, for example, the rotation operation can be facilitated as compared to the case where the periphery of the lid member other than the hinge portion is cut from the bottom wall to rotate the lid member.

  According to the present invention, it is possible to insert pipes or cables into the insertion hole after passing the wiring box through the through hole, suppressing the increase in the size of the through hole, and causing the occurrence of defects due to the increase in size. Can be prevented.

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

  First, the corrugated conduit 10 as a pipe connected to the wiring box will be described. As shown in FIG. 6, the corrugated conduit tube 10 made of synthetic resin has a circular tube shape, and annular ridges 10a and ridges 10b extending in the circumferential direction of the tube are alternately formed in the axial direction of the tube. And has flexibility. The building wall W on which the wiring box is installed is constructed by standing a pair of wall materials Wa so as to be opposed to each other at a predetermined interval. 10 is disposed.

  Next, the wiring box 11 that is installed on the building wall W and to which the corrugated conduit 10 is connected will be described. As shown in FIG. 1, a wiring box 11 made of a synthetic resin has a bottomed square box shape from a bottom wall 12 having a square plate shape and side walls 13 a to 13 d erected from the four peripheral edges of the bottom wall 12. Is formed. In the wiring box 11, a box inner space 11a is surrounded and formed inside the wiring box 11 by a peripheral wall composed of the bottom wall 12 and the side walls 13a to 13d, and a box inner space is formed on the side facing the bottom wall 12. 11a is opened. In the following description, in order to facilitate the description, in FIG. 1, the side wall 13 erected on the upper edge of the bottom wall 12 is erected on the lower side edge of the first side wall 13 a and the bottom wall 12. The side wall 13 is defined as a second side wall 13b, the side wall 13 erected on the left side edge of the bottom wall 12 is defined as a third side wall 13c, and the side wall 13 erected on the right side edge of the bottom wall 12 is defined as a fourth side wall 13d. The first side wall 13a and the second side wall 13b face each other in the vertical direction, and the third side wall 13c and the fourth side wall 13d face each other in the left-right direction.

  Two elongated fixing holes 14 extending in the front-rear direction (depth direction) of the wiring box 11 are formed in the third side wall 13c and the fourth side wall 13d. Then, by fixing a fixing screw (not shown) from the fixing hole 14 to a column (not shown), the wiring box 11 can be fixed to the side surface of the column. A screw mounting portion 15 is formed on the front side of the four corners of the wiring box 11, and a screw insertion hole 16 is formed at a position facing the screw mounting portion 15 in the bottom wall 12 (FIG. 2). reference). The screws 17 are inserted into the screw insertion holes 16 from the screw mounting portions 15 so that the screws 17 are attached to the four corners of the wiring box 11, and a tongue piece 18 made of a metal plate is attached to each screw 17. It is screwed. On the bottom wall 12 side of the first to fourth side walls 13a to 13d, an accommodation hole 19 for accommodating the tongue piece 18 is formed. In the third side wall 13c and the fourth side wall 13d, a pair of engaging pieces 20 projecting outward from the wiring box 11 are formed on the front end surface which is the end surface of the wiring box 11 on the opening side.

  As shown in FIG. 5, the first side wall 13a is formed with two substantially U-shaped insertion ports 21 at one end (lower end) of the corrugated conduit tube 10. The connecting end 10A is inserted and connected (see FIG. 8). The insertion port 21 is closed by the closing member 27 when the wiring box 11 is not used (for example, during transportation). However, the following description of the insertion port 21 is performed with the closing member 27 removed. Do. Each insertion port 21 includes a connection port 21a for connecting the connection end 10A to the first side wall 13a, and an accommodation port 21b for accommodating the connection end 10A toward the connection port 21a so as to be able to guide it. ing. The receiving port 21b is formed across the first side wall 13a and the bottom wall 12 adjacent to the first side wall 13a, and the first side wall 13a side of the first side wall 13a and the first side wall 13a of the bottom wall 12 are formed. It is formed by notching the side.

  In the accommodation port 21b, the opening width along the length direction (left-right direction) of the first side wall 13a is formed larger than the outer diameter of the ridge 10a of the corrugated conduit 10 (see FIG. 8). Further, the opening depth along the direction (vertical direction) orthogonal to the first side wall 13a in the accommodation port 21b can accommodate the plurality of protrusions 10a and the recesses 10b of the connection end 10A in the wiring box 11. It is formed to a depth (see FIG. 7). When the corrugated conduit 10 disposed on the back side of the bottom wall 12 is moved in the radial direction toward the bottom wall 12, the connection end 10A can be accommodated in the accommodation port 21b. Then, approximately 2/3 along the radial direction of the connecting end 10A can be accommodated in the accommodation port 21b. Further, in a state where the connection end portion 10A is accommodated in the accommodation port 21b, the inside of the connection end portion 10A is exposed to the inside of the wiring box 11 (box internal space 11a), and approximately 2/3 inside the connection end portion 10A. Is exposed inside the wiring box 11.

  As shown in FIGS. 1, 2 and 5, the connection port 21a is formed on the opening side of the wiring box 11 from the housing port 21b so as to communicate with the housing port 21b. As shown in FIG. 2, the first side wall 13a is provided with a connection portion 22 extending along the periphery of the insertion port 21 so as to project into the connection port 21a. It is provided to connect to the first side wall 13a (peripheral wall) in a state where movement in the axial direction is restricted. The connection portion 22 includes a first connection portion 23 formed integrally with the periphery of the connection port 21 a and a second connection portion 24 formed along the first connection portion 23. The first connecting part 23 and the second connecting part 24 are connected by a plurality of connecting pieces 25 formed between the connecting parts 23 and 24. The opening width in the length direction (left-right direction) of the 1st side wall 13a in the connection port 21a is narrower than the said opening width in the accommodation port 21b.

  As shown in FIG. 5, the second connecting portion 24 can be removed from the first connecting portion 23 by dividing the connecting piece 25. When the corrugated conduit 10 accommodated in the accommodation port 21b is moved to the connection port 21a side in the state where the second connection portion 24 is removed, the first connection portion 23 is fitted into the concave strip 10b of the connection end 10A. The corrugated conduit 10 is connected to the insertion port 21 by this fitting. In this connected state, the first connecting portion 23 is engaged with the outer surface of the ridge 10a as the outer surface of the connecting end portion 10A so that the movement of the corrugated conduit 10 in the axial direction is restricted. It has become. Although not shown, a corrugated conduit (not shown) having a diameter smaller than that of the corrugated conduit 10 that can be fitted to the first connecting portion 23 is accommodated in a state where the second connecting portion 24 is not removed. When moved from the port 21b to the connection port 21a side, the second connection portion 24 is adapted to be fitted into the recess of the small diameter corrugated conduit. Then, this fitting allows a small diameter corrugated conduit to be connected to the insertion port 21.

  As shown in FIG. 2, a protrusion-shaped extraction restricting portion 23a is formed on the upper surface of the first connecting portion 23 between the accommodation port 21b and the connecting port 21a. The pull-out restricting portion 23a is engaged with the protrusion 10a of the connecting end portion 10A of the corrugated conduit 10 connected to the connection port 21a by the first connecting portion 23, whereby the radial direction of the corrugated conduit 10 Is prevented from coming out from the connection port 21a. In addition, a protruding extraction restricting portion 24a is formed on the upper surface of the second connecting portion 24 between the accommodation port 21b and the connecting port 21a. The pull-out restricting portion 24a is engaged with the protrusions of the connecting end portion of the small-diameter corrugated conduit connected to the connection port 21a by the second connecting portion 24, thereby reducing the diameter of the small-diameter corrugated conduit. The exit from the connection port 21a along the direction is restricted. The extraction regulating portions 23a and 24a accommodate the corrugated conduit 10 in the accommodation port 21b, and the protrusion 10a of the connection end 10A is engaged before the connection portion 22 is fitted to the recess 10b. It is formed in the position to match. As shown in the shaded portion in FIG. 8, in the state where the pull-out restricting portions 23 a and 24 a are engaged with the ridge 10 a, approximately 2/3 along the radial direction at the connection end portion 10 </ b> A is within the wiring box 11. The depth of the storage port 21b toward the connection port 21a and the positions of the extraction restricting portions 23a and 24a are set.

  As shown in FIGS. 1 and 2, in each insertion port 21, the upper surface side of the connection port 21 a and the accommodation port 21 b is closed by the closing member 27, and the closing member 27 is formed on the periphery of the second connecting portion 24. It is connected via a connecting piece 28. That is, the closing member 27 is connected to the first side wall 13 a via the connecting piece 28 and the connecting portion 22. The closing member 27 has a thin plate shape and is thinner than the thickness of the first side wall 13a. Then, the connecting piece 28 is divided and the closing member 27 is removed from the insertion port 21 so that the insertion port 21 (the connection port 21a and the accommodation port 21b inside the second connection part 24) can be opened. It has become.

  As shown in FIG. 3A, an insertion hole 29 extending in a U shape from the bottom wall 12 side toward the opening side is formed at the center in the left-right direction of the second side wall 13b. The insertion hole 29 is formed until reaching the edge of the bottom wall 12 adjacent to the second side wall 13b. Further, the insertion hole 29 is closed by a closing plate 30 as a closing portion, and the closing plate 30 is connected to the periphery of the insertion hole 29 via a connecting piece 31. The closing plate 30 is connected to a peripheral edge of an insertion hole 29 extending in parallel to the surface of the bottom wall 12 via a connecting portion 32, and the connecting portion 32 is connected to the box inner space 11a by the second side wall 13b. It is formed so as to extend linearly in the left-right direction on the opening side. Further, as shown in FIG. 3B, the connecting portion 32 has a cross-sectional view along the width direction perpendicular to the length direction of the second side wall 13b and the thickness direction of the second side wall 13b. The second side wall 13b is formed in a thin shape so as to be recessed in a tapered shape in the direction, and functions as a hinge by forming the tapered shape.

  Then, the closing plate 30 is rotated toward the outside of the wiring box 11 with the connecting portion 32 as a rotation center, so that the closing state of the insertion hole 29 by the closing plate 30 is released and the insertion hole 29 is opened. The corrugated conduit 10 or the cable C can be inserted into the insertion hole 29. In addition, the angle which can rotate the connection part 32 with respect to the 2nd side wall 13b of the obstruction board 30 is less than 90 degree | times (refer FIG. 11). In addition, as shown in FIG. 11, the connection along the width direction and the thickness direction of the second side wall 13 b in a state where the closing plate 30 is rotated toward the outside of the wiring box 11 with the connection portion 32 as the rotation center. In a cross-sectional view of the portion 32, the portion 32a facing the inside of the wiring box 11 of the connecting portion 32 has a gentle arc shape.

  Further, as shown in FIG. 3A, an insertion hole 33 opened toward the edge of the bottom wall 12 is formed in the closing plate 30 so as to extend in a U shape. The insertion hole 33 is closed by a knock part 35, and the knock part 35 is connected to the periphery of the insertion hole 33 via a connecting piece 34. As shown in FIG. 3B, the knock portion 35 has a thinner plate shape than the closing plate 30. Further, the peripheral edge portion 33a of the insertion hole 33 is formed in an arc shape in which the sectional view in the width direction and the thickness direction of the second side wall 13b is gentle. As shown in FIG. 2, a communication hole 55 is formed on the second side wall 13b side of the bottom wall 12 adjacent to the second side wall 13b. The communication hole 55 communicates with the insertion hole 29 while the closing plate 30 is rotated. Yes.

  As shown in FIG. 2, a square hole is formed on both the left and right sides of the bottom wall 12, and through holes 36 penetrating the bottom wall 12 in the thickness direction are formed to extend in the vertical direction of the wiring box 11. Almost all of each through hole 36 is closed by a lid member 37, but the first side wall 13 a side edge of each lid member 37 and the bottom wall 12 side end of the closing member 27 that closes the insertion port 21. There is a gap between the edges. As described above, in a state where the through hole 36 is closed by the lid member 37, it is impossible to pass the finger of the hand through the through hole 36 and project the finger to the back side of the bottom wall 12. The lid member 37 has a first lid portion 38 that closes about half of the first side wall 13a side (upper side) of the through hole 36, and a second side that closes about half of the second side wall 13b side (lower side) of the through hole 36. The lid part 39 is formed integrally. The first lid portion 38 and the second lid portion 39 are connected to the bottom wall 12, which is the peripheral edge of the through hole 36, via connecting pieces 40. Further, the first lid portion 38 and the second lid portion 39 are hingedly connected via a hinge portion 41. The hinge portion 41 is configured by forming the lid member 37 into a thin shape so that a sectional view along the thickness direction of the lid member 37 is recessed in a tapered shape. Then, in any one of the first lid portion 38 and the second lid portion 39, when the connecting piece 40 is divided, the one lid portion is directed to the outside of the wiring box 11 with the hinge portion 41 as a rotation center. It can be rotated.

  In addition, the hinge part 41 is formed so that one of the first lid part 38 and the second lid part 39 is in contact with the other so that the rotation angle of one lid part is less than 90 degrees. . As shown in FIG. 5, when the first lid portion 38 is pivoted about the hinge portion 41 and the closed state of the through hole 36 by the first lid portion 38 is released, the finger is placed in the through hole 36. The finger can be protruded to the back side of the bottom wall 12. That is, by rotating the first lid portion 38, the opening area of the through hole 36 at the bottom wall 12 becomes wider than before the first lid portion 38 is rotated, and the finger of the hand is inserted through the widened portion. Will be able to.

  Next, a method of installing the wiring box 11 having the above configuration on the building wall W after the building wall W is constructed will be described. First, a pair of wall materials Wa are erected so as to face each other at a predetermined interval, and the building wall W is constructed. In the building state of the building wall W, the corrugated conduit 10 is disposed inside the building wall W (between a pair of wall materials Wa). Next, as shown in FIG. 4, a through hole 50 is drilled in a wall material Wa standing on the front side of the building wall W. The through hole 50 is slightly larger than the outer shape of the wiring box 11 and is sized to allow the wiring box 11 to be inserted from the bottom wall 12 side, and the engagement piece 20 is formed at the peripheral portion of the through hole 50 in the wall material Wa. It is drilled to a size that allows engagement. Next, as shown in FIG. 5, the connecting piece 28 is divided to remove the closing member 27 from the insertion port 21, and the second connecting portion 24 is removed from the first connecting portion 23. Further, in the through hole 36 that communicates with the insertion port 21, the connecting piece 40 that connects the first lid portion 38 to the bottom wall 12 is divided, and the wiring box 11 has the first lid portion 38 as the center of rotation of the hinge portion 41. The opening area of the through hole 36 is widened by rotating it outward.

  Next, as shown in FIG. 6, the wiring box 11 is passed through the through hole 50 from the bottom wall 12 side, and the opening of the wiring box 11 is made to face the front side of the building wall W. Subsequently, a hand is inserted from the opening of the wiring box 11 into the internal space 11a, and a finger is inserted through the through hole 36 having an enlarged opening area so that the finger protrudes to the outside of the wiring box 11. Insert into. Then, a finger is inserted into the inside of the corrugated conduit 10 from the connection end 10A (lower end) of the corrugated conduit 10 disposed in the building wall W, and the finger is inserted into the inner periphery of the corrugated conduit 10. Hook on the surface. Next, the hand is moved to the front side of the building wall W, the finger is drawn toward the bottom wall 12 side (wiring box 11 side), and the corrugated conduit 10 is drawn toward the bottom wall 12 side. As shown, the connection end 10A of the corrugated conduit 10 is accommodated in the accommodation port 21b, and the extraction restricting portion 23a is engaged with the outer surface of the ridge 10a.

  7 and 8, in this engaged state, the connection end portion 10A of the corrugated conduit tube 10 is accommodated in the wiring box 11 in approximately 2/3 in the radial direction, and the corrugated wire More than half of the inner side of the tube 10 is exposed toward the inner side of the wiring box 11. Subsequently, when the corrugated conduit 10 is drawn toward the inside of the wiring box 11, as shown in the two-dot chain line of FIG. 8 and FIG. 9, the corrugated conduit 10 is directed from the accommodation port 21b toward the connection port 21a, that is, Then, it is elastically deformed in the length direction of the insertion port 21. At this time, the corrugated electric conduit 10 is elastically deformed into an elliptical shape that is elongated in the length direction of the insertion opening 21 by pulling the corrugated electric conduit 10 in the length direction (front-rear direction) of the insertion opening 21 with a finger. To do. When the corrugated conduit 10 is elastically deformed, the first connecting portion 23 is fitted into the concave strip 10b of the corrugated conduit 10, and at the same time, the convex strip 10a engaged with the extraction restricting portion 23a is elastic. It is deformed and gets over the extraction restricting portion 23a.

  As a result, as shown in the two-dot chain line in FIG. 8 and FIG. 10, the corrugated conduit 10 is inserted into the rear side of the insertion port 21 relative to the extraction restricting portion 23 a, that is, the connection port 21 a. One connecting portion 23 is fitted into the concave strip 10b. The first connecting portion 23 is connected to the connection port 21a of the insertion port 21 in a state in which the movement of the corrugated electric tube 10 in the axial direction is restricted, and the corrugated electric tube is removed by the extraction restricting portion 23a. 10 is restricted from coming out of the insertion opening 21 along the radial direction.

  Further, when pulling the corrugated conduit 10 toward the inside of the wiring box 11, the wiring box 11 is pushed into the through hole 50, and the engagement piece 20 is engaged with the peripheral portion of the through hole 50. Then, the first lid portion 38 comes into contact with the wall material Wa on the back side of the building wall W, rotates around the hinge portion 41 in the direction of closing the through hole 36, and slightly closes the through hole 36. To do. For this reason, the opening degree of the through-hole 36 becomes small. Next, the screw 17 is rotated, the tongue piece 18 is drawn forward of the wiring box 11, and the wall material Wa on the front side of the building wall W is clamped by the tongue piece 18 and the engagement piece 20. As a result, the wiring box 11 is fixed to the wall material Wa and installed on the building wall W. Thereafter, a cable (not shown) is drawn into the corrugated conduit 10 and a wiring device is connected to the cable.

  The wiring box 11 having the above-described configuration may be installed in the building wall W by accommodating the wiring box 11 in the through hole 50 after the cable C is drawn into the wiring box 11 as described below. Is possible. In this case, the cable C is inserted into the corrugated conduit 10.

  First, as shown in FIG. 11, the connecting piece 34 is divided, the knock portion 35 is removed from the closing plate 30, and the insertion hole 33 is opened. Next, the connecting piece 31 is divided, and the closing plate 30 is rotated toward the outside of the wiring box 11 with the connecting portion 32 as a rotation center, thereby causing the insertion hole 29 and the communication hole 55 to communicate with each other. Next, a through hole 50 is formed in the wall material Wa standing on the front side of the building wall W, and the cable C is pulled out from the through hole 50 to the front side of the wall material Wa. Then, the end portion of the drawn cable C is inserted into the insertion hole 29. At this time, the opening area of the insertion hole 29 becomes larger than that before the closing plate 30 is rotated due to the release of the closing state due to the rotation of the closing plate 30, and the insertion hole 29 communicates with the communication hole 55. The opening area is even wider. Further, the closing plate 30 itself is also opened by the insertion hole 33, and the insertion hole 33 communicates with the insertion hole 29 that is widened by the rotation of the closing plate 30. For this reason, the insertion of the cable C into the insertion hole 29 is promptly performed.

  Next, as shown in FIG. 12, the wiring box 11 is passed through the through hole 50 from the bottom wall 12 side, and the opening of the wiring box 11 is made to face the front side of the building wall W. At this time, the wiring box 11 moves toward the through hole 50 along the drawn cable C. At this time, as shown in FIGS. 11 and 12, the peripheral portion 33a of the insertion hole 33 and the portion 32a facing the wiring box 11 at the connecting portion 32 are formed in a gentle arc shape. For this reason, even if the wiring box 11 moves along the cable C, the cable C is prevented from being damaged by the peripheral portion 33a of the insertion hole 33 and the portion 32a facing the wiring box 11 at the connecting portion 32. . Thereafter, the wiring box 11 is installed on the building wall W.

According to the above embodiment, the following effects can be obtained.
(1) A through hole 36 is formed in the bottom wall 12 so that a finger of a hand can protrude to the outside of the wiring box 11. When installing the wiring box 11, after passing the wiring box 11 through the through hole 50 of the building wall W, the corrugated conduit 10 is connected to the wiring box 11 with a finger protruding from the through hole 36 to the outside of the wiring box 11. By pulling to the side, the corrugated conduit 10 can be inserted and connected to the insertion port 21. That is, after the wiring box 11 is accommodated in the building wall W from the through hole 50, the corrugated conduit 10 can be connected to the wiring box 11, and the wiring box 11 can be retrofitted to the building wall W. Therefore, after connecting the corrugated conduit 10 to the wiring box 11, as in the case where the wiring box 11 is accommodated in the building wall W, the large transparency that allows the wiring box 11 and the corrugated conduit 10 to pass through simultaneously. It is not necessary to make the hole 50 in the wall material Wa, and the size of the through hole 50 can be made slightly larger than the outer shape of the wiring box 11. As a result, the through-hole 50 becomes much larger than the outer shape of the wiring box 11, so that when the wiring box 11 is not sufficiently fixed, the wiring box 11 is rattled in the through-hole 50. Can be prevented.

  (2) Since the corrugated conduit 10 can be connected to the wiring box 11 after the wiring box 11 is accommodated in the building wall W or in the middle of accommodating, the corrugated conduit 10 is inserted into the through hole 50. There is no need to pull it out to the front side of the building wall W. Therefore, when the corrugated conduit 10 is pulled out to the front side of the building wall W, the corrugated conduit 10 is brought into contact with the peripheral edge of the through hole 50 to prevent the through hole 50 and the corrugated conduit 10 from being damaged. be able to.

  (3) The through hole 36 is closed by the lid member 37 (the first lid portion 38 and the second lid portion 39), and when the corrugated conduit 10 is connected, the hinge member 41 is used as the rotation center to cover the lid member 37 (first By rotating the lid portion 38), it is possible to widen the opening area of the through hole 36 and insert the finger. Therefore, until the finger is passed through the through hole 36, that is, until the wiring box 11 is installed on the building wall W, the bottom wall 12 is closed by the lid member 37 and the rigidity can be maintained high. As a result, for example, it is possible to prevent the wiring box 11 from being deformed or damaged during transportation of the wiring box 11, and it is possible to suppress entry of dust or the like into the wiring box 11.

  (4) After the corrugated conduit 10 is connected to the wiring box 11, the lid member 37 (first lid portion 38) rotates in a direction to close the through hole 36 by abutting against the wall material Wa. For this reason, the opening degree of the through hole 36 can be reduced by the closing member 27, and the rotation of the lid member 37 in the direction in which the through hole 36 is opened can be restricted. Therefore, the lid member 37 can prevent the corrugated conduit 10 from coming out of the insertion port 21 from the accommodation port 21b.

  (5) The lid member 37 (first lid portion 38) rotates in a direction protruding outward from the wiring box 11 to open the through hole 36. For this reason, for example, the lid member 37 does not exist in the wiring box 11 as in the case where the lid member 37 is rotated in the direction of entering the inside of the wiring box 11. Therefore, it is possible to prevent the lid member 37 from interfering with the insertion of the hand into the box inner space 11a. Further, when the corrugated conduit 10 is inserted into the insertion port 21, the lid member 37 becomes an obstacle. The corrugated conduit 10 can be quickly connected to the insertion port 21.

  (6) A connecting portion 22 is formed in the insertion port 21. When the concave strip 10b is fitted to the connecting portion 22, the connecting portion 22 is engaged with the convex strip 10a of the connecting end portion 10A. It has become. For this reason, the corrugated conduit 10 can be connected to the wiring box 11 in a state where the movement of the corrugated conduit 10 inserted into the insertion port 21 in the axial direction is restricted by the connecting portion 22. As a result, the corrugated conduit 10 can be prevented from excessively entering the inside of the wiring box 11, and the connection end 10 </ b> A can be prevented from interfering with the wiring device accommodated in the wiring box 11.

  (7) Extraction restricting portions 23a and 24a are formed in the connection portion 22 of the insertion port 21, and the extraction restricting portions 23a and 24a are formed so as to be able to engage with the ridge 10a of the connecting end portion 10A. For this reason, the movement to the radial direction of the corrugated conduit 10 inserted in the insertion port 21 is controlled, and the exit of the corrugated conduit 10 in the radial direction from the insertion port 21 (connection port 21a) is controlled. be able to. As a result, the state where the cable C protected by the corrugated conduit 10 is drawn into the wiring box 11 can be maintained.

  (8) The lid member 37 (first lid portion 38) is coupled to the bottom wall 12 via the coupling piece 40. For this reason, when the lid member 37 is not rotated, the lid member 37 can be integrated with the bottom wall 12 and prevented from swinging.

  (9) The lid member 37 (first lid portion 38) rotates around the hinge portion 41 as the rotation center when the through hole 36 is opened. That is, the lid member 37 is connected to the bottom wall 12 via the hinge portion 41. For this reason, even if the through-hole 36 is opened, the lid member 37 is not separated from the wiring box 11, and the lid member 37 is not generated as dust (waste) when the wiring box 11 is installed. it can.

  (10) When the cable C (cables) is inserted into the insertion hole 29 of the wiring box 11 and the wiring box 11 is installed on the building wall W, the closing plate 30 (closing portion) with the connecting portion 32 as the rotation center , The closed state of the insertion hole 29 by the closing plate 30 can be released. At this time, since the closing plate 30 remains connected to the second side wall 13b (peripheral wall) by the connecting portion 32, the closing plate 30 that closes the insertion hole 29 during the installation work of the wiring box 11 becomes the wiring box 11. It is prevented that it becomes the waste separated from.

  (11) The connecting portion 32 is formed of a hinge formed by thinly forming a connecting portion between the second side wall 13b (peripheral wall) and the closing plate 30 (closing portion). That is, it is possible to enable a configuration in which the closing plate 30 can be rotated while being integrated with the wiring box 11 with a simple configuration that is formed thinly when the wiring box 11 is formed.

  (12) In a state where the closing plate 30 (closing portion) is rotated, the edge of the closing plate 30 is separated from the bottom wall 12 (peripheral wall) adjacent to the second side wall 13b where the closing plate 30 is formed. Thus, the opening area of the insertion hole 29 is increased. Furthermore, by forming the insertion hole 33 on the bottom wall 12 side of the closing plate 30, the insertion hole 33 communicates with the opened insertion hole 29, and the insertion hole 29 is opened compared to the case where the insertion hole 33 is not formed. The area can be made wider. As a result, even if the closing plate 30 is integrated with the second side wall 13b, the workability of the operation of inserting the cable C into the insertion hole 29 can be improved.

  (13) The communication hole 55 communicates with the insertion hole 29, and the insertion hole 29 extends from the second side wall 13 b where the insertion hole 29 is formed to the bottom wall 12. For this reason, for example, compared to the case where the insertion hole 29 is formed only in the second side wall 13b in which the insertion hole 29 is formed, the opening area of the insertion hole 29 when the closing plate 30 is rotated. And the workability of the work of inserting the cable C into the insertion hole 29 can be improved.

  (14) When the wiring box 11 moves along the cable C in a state where the closing plate 30 (closing portion) is rotated and the cable C (cables) is inserted into the insertion hole 29, wiring is performed at the connecting portion 32. The location 32a facing the box 11 may be in sliding contact with the cable C. At this time, in the connecting portion 32 after the closing plate 30 is rotated, the portion 32a facing the inside of the wiring box 11 is formed in a gentle arc shape, and thus the portion 32a is formed in a pin square shape. As in the case, the cable C can be prevented from being damaged. Further, since the peripheral portion 33a of the insertion hole 33 of the closing plate 30 also has a gentle arc shape, when the wiring box 11 moves along the cable C, the peripheral portion 33a of the insertion hole 33 slides on the cable C. It is possible to prevent the cable C from being damaged by the insertion hole 33.

  (15) When the connection end 10A of the corrugated conduit 10 (tubes) is inserted into the insertion port 21, when the connection end 10A is accommodated in the accommodation port 21b, the outer surface of the connection end 10A (the outer surface of the ridge 10a) ) Is engaged, and the movement of the corrugated conduit 10 is temporarily stopped. At this time, since the inner side of the connection end 10A is exposed from the accommodation port 21b to the inner side of the wiring box 11, the corrugated conduit 10 is pulled from the accommodation port 21b side toward the connection port 21a with the finger inserted. be able to. When the finger is hooked and pulled inside the connection end portion 10A, the connection end portion 10A is elastically deformed in the pulling direction, so that it is elastically deformed so as to extend from the accommodation port 21b side toward the connection port 21a. It is possible to facilitate passage of the extraction restricting portion 23a. On the other hand, the method of pushing the outer surface of the corrugated conduit 10 from the accommodation port 21b side to the connection port 21a side is elastically deformed so that the connection end portion 10A expands in the direction intersecting the pulling direction. The engagement area of the connecting end 10A to the extraction restricting portion 23a is expanded. Therefore, the method of hooking and pulling a finger inside the connection end 10A is more effective than the method of pushing the outer surface of the corrugated conduit 10 from the accommodation port 21b side toward the connection port 21a. It becomes easy to insert and connect to the insertion port 21.

  (16) In a state where the outer surface of the connection end 10 </ b> A is engaged with the extraction restricting portion 23 a, more than half (approximately 2/3) of the inner side of the corrugated conduit 10 is exposed inside the wiring box 11. For this reason, a finger can be reliably inserted inside the connection end 10A, and the work of hooking the finger inside the connection end 10A and pulling the corrugated conduit 10 can be performed easily and reliably.

  (17) The storage port 21b is formed from the first side wall 13a to the bottom wall 12. For this reason, when the wiring wall 11 is passed through the through hole 50 after the building wall W is constructed, the connection end portion 10A is easily accommodated into the accommodation port 21b from the bottom wall 12 side. At this time, the inner side of the connection end 10A is exposed to the inner side of the wiring box 11 from the accommodation port 21b, and the finger of the hand can be inserted into the inner side of the connection end 10A. Therefore, after the corrugated conduit 10 is pulled out to the front side of the building wall W and inserted into the insertion port 21 of the wiring box 11, there is no need to accommodate the wiring box 11 in the through hole 50. As a result, the drawn wave Since the wiring box 11 can be passed through the through hole 50 together with the attached conduit 10, the through hole 50 is not increased in size.

  (18) In a state where the lid member 37 (first lid portion 38) is rotated and the opening area of the through hole 36 is larger than that before the lid member 37 is rotated, the first lid portion 38 faces the through hole 36. In a tilted state. For this reason, the corrugated conduit 10 is pulled into the insertion port 21 (accommodating port) by drawing the corrugated conduit 10 toward the insertion port 21 in a state where the edge of the connection end 10A is in contact with the first lid 38. 21b) can be guided toward the side. Therefore, it is possible to facilitate the work of drawing the corrugated conduit 10 toward the insertion port 21.

In addition, you may change the said embodiment as follows.
○ In the state where the protrusion 10a of the connection end 10A is engaged with the extraction restricting portion 23a, the extraction restricting portion 23a is exposed so that less than half of the inside of the connection end 10A or all inside is exposed to the inside of the wiring box 11. You may set the position and the depth to the connection port 21a side of the accommodation port 21b. In other words, in a state where the protruding strip 10a of the connection end 10A is engaged with the extraction restricting portion 23a, it is adjusted to the tube diameter of the corrugated conduit 10 so that a finger can be inserted inside the connection end 10A. The position of the extraction restricting portion 23a and the depth of the accommodation port 21b toward the connection port 21a may be set.

In the state where the closing plate 30 is rotated, the portion 32a facing the inside of the wiring box 11 at the connecting portion 32 may not be formed in a gentle arc shape.
In the bottom wall 12, the communication hole 55 that communicates with the insertion hole 29 may be deleted.

(Circle) the obstruction board 30 of the 2nd side wall 13b is not connected by the connection part 32, and may be removable from the 2nd side wall 13b.
In the closing plate 30, the insertion hole 33 may be deleted, and the knock part 35 may be deleted along with this deletion.

  As shown in FIG. 13, the wiring box 11 is installed in the building wall W in advance and the cable C is inserted into the insertion hole 29 of the wiring box 11 so that the cable C is connected to the building wall W. You may pull out to the front side. In this case, the through hole 50 is formed in the wall material Wa so that the opening of the box internal space 11a faces the front side of the building wall W. When the cable C is pulled out to the front side of the building wall W through the opening of the wiring box 11, the cable C faces the wiring box 11 at the connecting portion 32 on the opening side of the box internal space 11a and In some cases, the insertion hole 33 may come into sliding contact with the peripheral edge portion 33a. At this time, since the connecting portion 32 and the peripheral portion 33a of the insertion hole 33 after the closing plate 30 is rotated are formed in a gentle arc shape, the connecting portion 32 and the peripheral portion 33a are formed in a pin angle shape. It is possible to prevent the cable C from being damaged as in the case of the cable.

  As shown in FIG. 14, the insertion hole 29 may be closed by a closing portion 60 that is hinged to the second side wall 13 b. The insertion hole 29 is not open to the bottom wall 12 side. The closing portion 60 is integrated with the second side wall 13b by a connecting portion 61 that extends linearly in the left-right direction.

As shown in FIG. 15, the insertion hole 29 may be partially blocked by a connecting portion 61 made of a hinge formed on the second side wall 13 b.
As described below, the operation of drawing the cable C into the wiring box 11 using the rotated lid member 37 (first lid portion 38) may be performed. As shown in FIG. 16, first, the closing member 27 is removed to open the insertion port 21, and the first lid portion 38 is rotated so that the wiring box 11 having the through hole 36 is opened through the through hole 50. The engagement piece 20 is engaged with the peripheral edge of the through hole 50 by passing through. At this time, the lid member 37 (first lid portion 38) rotates in a direction to reduce the degree of opening of the through hole 36 by contacting the wall material Wa. Next, as in the embodiment, the corrugated conduit 10 is pulled toward the wiring box 11 with a finger, the connection end 10A is accommodated in the accommodation port 21b, and the protrusion 10a is extracted and engaged with the restriction portion 23a. When the cable C is inserted into the corrugated conduit 10 in this state, the cable C comes into contact with the lid member 37 (first lid portion 38) that is inclined with respect to the bottom wall 12 and heads toward the through hole 36. To be guided. As a result, the cable C passes through the through hole 36 and enters the wiring box 11.

  The connecting piece 40 that connects the lid member 37 to the bottom wall 12 penetrates the rotated lid member 37 (the first lid portion 38 or the second lid portion 39) by engaging the divided portions after the division. It may be an engaging portion that holds the hole 36 at a position to close it. Further, when the lid member 37 is rotated between the bottom wall 12 and the lid member 37 (the first lid portion 38 or the second lid portion 39) in a direction to close the through hole 36, they are engaged with each other. Thus, a holding means for holding the lid member 37 in the closed position may be provided separately from the connecting piece 40.

  O You may form the protrusion which protrudes in the box inner space 11a in the cover member 37 (at least one of the 1st cover part 38 and the 2nd cover part 39). With this configuration, when the lid member 37 rotated in the direction to open the through-hole 36 is rotated in the direction to close the through-hole 36, the protrusion is picked with a finger of the hand or the tool is locked. By doing so, the operation of rotating the lid member 37 can be easily performed.

  ○ The connecting piece 31 that connects the closing plate 30 to the second side wall 13 b is engaged with the cut portions after the cutting, thereby holding the rotated closing plate 30 in a position to close the insertion hole 29. It may be. Further, when the closing plate 30 rotates in the direction to close the insertion hole 29 between the second side wall 13b and the closing plate 30, the closing plate 30 is held in the closing position by engaging with each other. A holding means may be provided separately from the connecting piece 31.

A separate closing portion that closes the insertion hole 29 may be formed on the periphery of the insertion hole 29, and the closing plate 30 may be hinged to the separate closing portion via a connecting portion 32.
In the 2nd side wall 13b, it is the periphery of the penetration hole 29, and it is good also as the thickness of the 2nd side wall 13b not forming a connection location with the obstruction board 30 thinly. And it is good also as a structure which is the periphery of the insertion hole 29, and makes the obstruction board 30 rotate centering on a connection location with the obstruction board 30, and in this case, the connection place of the outer periphery of the insertion hole 29 and the obstruction board 30 is good. Constitutes a connecting portion of the closing plate 30.

O You may delete the connection part 22 and make the groove 10b fit to the periphery of the insertion port 21. FIG. At this time, an extraction restricting portion projects from the upper surface of the first side wall 13a.
When the wiring box 11 is installed, the through hole 36 may be formed in the bottom wall 12, and in this case, the through hole 36 is closed by the bottom wall 12 instead of the lid member 37.

  In the bottom wall 12, the periphery of the lid member 37 is formed into a thin shape, and the portion having the thin wall shape is cut when the wiring box 11 is installed, and the lid member 37 (first lid portion 38) is rotated to penetrate. The hole 36 may be opened.

The through hole 36 may be closed not only with the lid member 37 but also with other lid members. The lid member 37 may be connected to the other lid member via a hinge portion.
○ When the wiring box 11 is installed, the rotation angle of the first lid 38 is made small so that the rotated first lid 38 is not brought into contact with the wall material Wa to rotate in the direction of closing the through hole 36. May be.

The through hole 36 is not closed by the lid member 37 and may always be opened at the bottom wall 12.
○ Connect the pipe connector to one end (lower end) of the corrugated conduit 10, use the tube connector as the connection end of the corrugated conduit 10, and insert and connect the connection end to the insertion port 21. May be. In this case, a finger of a hand is inserted inside the tube connector, and the corrugated conduit 10 is pulled toward the wiring box 11 side.

  ○ In the bottom wall 12, the first lid 38 is made more compact than in the embodiment, and the size of the through-hole 36 is made so that a finger can be inserted into the through-hole 36 while part of the through-hole 36 is closed by the first lid 38. May be.

  In the bottom wall 12, the communication hole 55 may be deleted and the through hole 36 may be communicated with the insertion hole 29 of the second side wall 13 b. In this case, by rotating the second lid 39 around the hinge portion 41 as a rotation center, the through hole 36 can be opened so that a finger can be inserted. When connecting 10, the corrugated conduit 10 can be pulled and connected to the insertion hole 29 with a finger.

  In the embodiment, in the state where only the cable C is disposed in the building wall W, after the wiring box 11 is accommodated in the through hole 50, the finger of the hand is protruded from the through hole 36 to the outside of the wiring box 11, The cable C may be hooked on the finger of the hand and pulled to the insertion port 21 and inserted into the insertion port 21.

  In the wiring box 11, the connection end is changed in a state where the depth of the accommodation port 21 b of the insertion port 21 and the position of the extraction restricting portion 23 a are changed and the extraction restricting portion 23 a is engaged with the protrusion 10 a of the connecting end portion 10 A. It is good also as a structure which cannot insert a finger | toe inside 10A of parts.

  O Instead of deleting the insertion hole 29 and the blocking plate 30 of the second side wall 13b, the insertion port 21 may be formed in the second side wall 13b and the insertion port 21 may be closed by the closing member 27. That is, the wiring box 11 may have a configuration in which the insertion ports 21 are formed on both side walls of the first side wall 13a and the second side wall 13b (the insertion hole 29 and the blocking plate 30 (blocking portion) are omitted). In this case, the wiring box 11 is configured so that a finger can protrude from the through-hole 36 to the outside of the wiring box 11, and the connection box 10 </ b> A of the connection end 10 </ b> A is engaged with the extraction restricting portion 23 a. A finger can be inserted inside the end portion 10A. Furthermore, in this wiring box 11, in the state where the position of the extraction restricting portion 23a and the depth of the accommodation port 21b are changed and the extraction restricting portion 23a is engaged with the ridge 10a of the connecting end portion 10A, the connecting end portion 10A. It is good also as a structure which a finger cannot insert inside.

  In the embodiment, the case where the corrugated conduit 10 is disposed when the building wall W is constructed has been described. However, the corrugated conduit 10 may not be disposed when the building wall W is constructed. When installing, the corrugated conduit 10 may be disposed in the building wall W.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(1) A connecting end portion of the pipe is inserted into the insertion port, and the tube is axially engaged with an outer surface of the connecting end portion around the insertion port on the side wall. A connection part that restricts movement is formed, and the connection part is engaged with the outer surface of the connection end part, thereby restricting withdrawal from the insertion opening along the radial direction of the pipes. A portion is formed, and the insertion port is connected to the connection port for connecting the connection end to the side wall, and extends from the side wall where the connection port is formed to the bottom wall. A storage port that can store the connection end, and the connection end is stored in the storage port, and the outer surface of the connection end is engaged with the extraction restricting portion, and is inserted into the space in the box. Connect the finger of your hand so that it can be inserted inside the connection end. The depth to the connection port side of the storage port and the formation position of the extraction restricting portion are set so that the end portion is stored in the wiring box. Wiring box.

(2) The wiring box according to the technical concept (1), in which a half or more of the inner side of the connection end is exposed to the inside of the wiring box in a state where the outer surface of the connection end is engaged with the extraction restricting portion.
(3) The side wall is formed with an insertion hole through which the pipes or cables can be inserted. The insertion hole is closed by a closing part, and the closing part is the side wall or the closing part. In addition to closing the insertion hole, the insertion hole is connected to another closing portion integrally formed on the side wall via a connecting portion, and the closing portion is formed to be rotatable about the connecting portion as a rotation center. The wiring box according to any one of claims 5 to 7, technical ideas (1) and (2).

  (4) According to the technical idea (3), the connecting portion is formed of a hinge formed by thinly forming a connecting portion between the side wall and the closing portion or a connecting portion between the closing portion and another closing portion. Wiring box as described.

(5) The wiring box according to the technical idea (4), wherein the connecting portion is formed by linearly forming the hinge.
(6) The insertion hole is formed at the side wall until reaching the edge of the bottom wall, and the closing part has an insertion hole opened toward the edge of the bottom wall at the closing part. The wiring box as described in any one of the technical thoughts (3)-(5) currently formed.

(7) The wiring box according to the technical idea (6), wherein the insertion hole is formed so as to straddle the bottom wall from the side wall in which the insertion hole is formed.
(8) A technical idea in which, in the connecting portion after the closing portion is rotated, a portion facing the inside of the wiring box is formed in an arc shape in which a sectional view in a thickness direction of the side wall on which the connecting portion is formed is gentle. The wiring box according to any one of (3) to (7).

  (9) The wiring box according to the technical idea (8), wherein the connecting portion is formed on an opening side of the space in the box on the side wall.

The perspective view which shows the wiring box of embodiment from the front side. The perspective view which shows a wiring box from the bottom wall side. (A) is a perspective view which shows a wiring box from the 2nd side wall side, (b) is the 3b-3b sectional view taken on the line of Fig.3 (a). The front view which shows the state which accommodated the wiring box in the through-hole. The perspective view which shows the state which accommodated the wiring box in the through-hole. Sectional drawing which shows the state which inserted the finger of the hand in the through-hole. Sectional drawing which shows the state which pulled the wavy conduit tube toward the wiring box side. The top view which shows the corrugated conduit tube in an insertion port. The top view which shows the corrugated conduit tube in an insertion port. The side view which shows the state by which the corrugated conduit tube was connected to the wiring box. Sectional drawing which shows the state which penetrated the cable in the insertion hole. Sectional drawing which shows the state by which the cable was inserted in the insertion hole. The sectional side view which shows another example. The perspective view which shows the insertion hole of another example. The perspective view which shows the insertion hole of another example. The sectional side view which shows the installation method of the wiring box of another example.

Explanation of symbols

  C: Cables as cables, W: Building walls, 10: Corrugated conduits as pipes, 11a: Space in box, 11: Wiring box, 12: Bottom wall, 13 (13a, 13b, 13c, 13d) ... side wall (first to fourth side walls), 21 ... insertion port, 36 ... through hole, 37 ... lid member, 38 ... first lid part constituting the lid member, 39 ... second lid part constituting the lid member, 40 ... connecting piece, 41 ... hinge part, 50 ... through hole.

Claims (7)

A side wall is erected on the bottom wall to form a bottomed box shape, and is a method of installing a wiring box having a box internal space that opens on the side facing the bottom wall on the building wall,
In the side wall, an insertion port that allows insertion of the pipe or cable by opening the pipe or cable along the radial direction toward the bottom wall opens to the bottom wall side. In addition, a through hole is formed in the bottom wall so as to allow a finger inserted into the box space from the opening to protrude to the outside of the wiring box. ,
Perforating through the building wall to insert the wiring box from the bottom wall side,
A wiring box is inserted into the through hole from the bottom wall side, and the opening is arranged so as to face the front side of the building wall,
A hand is inserted into the box space from the opening, a finger of the hand is projected from the through hole to the outside of the wiring box, and the finger is locked to the pipes or cables arranged in the building wall. Is moved to the front side of the building wall to draw the pipes or cables to the bottom wall side, and after the pipes or cables are inserted into the insertion port, the wiring box is fixed to the building wall. How to install the wiring box. The wiring box according to claim 1, wherein at least a part of the through hole is closed by a lid member, and after releasing the closed state of the through hole by the lid member, the finger protrudes from the through hole to the outside of the wiring box. Installation method. The lid member closes the through-hole separately from the bottom wall or the lid member and is connected to another lid member integrally formed with the bottom wall via a hinge portion, and the lid member is connected to the insertion port. 3. The cover member according to claim 2, wherein the cover member is rotated in a direction to close the through-hole with the hinge portion as a rotation center by bringing the cover member into contact with the building wall after the cable or the cable is inserted. Wiring box installation method. The wiring box installation method according to claim 3, wherein the lid member is rotated toward the outside of the wiring box with the hinge portion as a rotation center. The bottom wall has a bottomed box shape with side walls erected on the periphery of the bottom wall, and has a space in the box that opens to the side facing the bottom wall, and the building wall has a through hole formed in the building wall. A wiring box to be installed,
In the side wall, an insertion port that allows insertion of the pipe or cable by opening the pipe or cable along the radial direction toward the bottom wall opens to the bottom wall side. And a through hole is formed in the bottom wall so as to allow a finger inserted into the space inside the box to protrude from the opening to the outside of the wiring box. A wiring box characterized by that. The through-hole is at least partially closed by a lid member, and the lid member closes the through-hole separately from the bottom wall or the lid member and is formed on another lid member integrally formed on the bottom wall. The wiring box according to claim 5, wherein the lid member is connected via a hinge portion, and the lid member is formed to be rotatable in a direction of opening a through hole with the hinge portion as a rotation center. The wiring box according to claim 6, wherein the lid member is coupled to a peripheral edge of the through hole by a coupling piece.

Images