JP2011024375A - Wiring box and wiring box apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring box in which a coating margin wall can be set in the wiring box, without having to attach a different cover and workability can be improved in connecting an electric wire tube connecting fixture or an electric wire tube, and to provide a wiring box apparatus. <P>SOLUTION: The coating margin wall 15 is integrally molded on the wiring box 11. In the wiring box 11, a first sidewall 13 is positioned on the same plane as that of a first side portion 15a of the coating margin wall 15. A through-hole 13a enabling the electric wire tube connecting fixture to be coupled is formed on the first sidewall 13. Since the first sidewall 13 has a side portion thereof which extends to the outside from the outer surface of a second side portion 15b, that part of the electric wire tube connecting fixture of the electric wire first sidewall 13 can be positioned on the outside of a second sidewall 14 from the outer surface of the second side portion 15b to be connected to the first sidewall 13, In the wiring box 11, a bulging portion 20 consisting of the side portion of the first side wall 13, the second sidewall 14 and the bottom wall 12 is formed more closer to the bottom wall 12 than to the coating margin wall 15 on the outer side from the outer surface of the second side portion 15b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wiring box embedded in a concrete wall or sprayed heat insulating material, and a wiring box device comprising the wiring box and a conduit connector.

  For example, a wiring box embedded in a concrete wall is attached to a rebar with a box cover (paint cover) attached in advance to the opening side before being embedded in a concrete wall (for example, , See Patent Document 1). The box cover of Patent Document 1 has a rectangular frame shape, and an opening is formed at the center, and a coating wall is formed around the opening. Then, by attaching the box cover to the wiring box, a coating wall is provided on the opening side of the wiring box, the opening peripheral edge side of the wiring box is closed and coating is provided, and wiring is performed from the inside of the coating wall. Only a part of the center of the box is opened.

  In addition, before the concrete is placed, for the wiring box attached to the rebar, the cable for connecting the wiring device is drawn into the wiring box from the through hole formed in the side wall of the wiring box. The cable is inserted into a conduit connected to the wiring box using a through hole of the wiring box. The conduit is connected to the wiring box via a conduit connector connected to the wiring box using the through hole of the wiring box or directly connected to the through hole. The conduit fitting includes a screw portion at one end of a cylindrical main body and a lock nut that can be screwed into the screw portion.

  The conduit connector is connected to the wiring box by inserting the screw portion into the through hole of the wiring box and screwing the lock nut into the screw portion in the wiring box. Further, the conduit is connected to the wiring box by being directly inserted into the through hole of the wiring box.

  When a concrete wall is constructed in a state where the wiring box is supported by the rebar, the concrete wall is prevented from entering the wiring box by bringing the opening end of the coating wall into contact with the inner surface of the formwork. . Also, the cable is protected by the conduit. After removing the formwork, the inside of the wiring box is exposed to the outside of the concrete wall from the inside of the paint wall, the cable in the wiring box is pulled out from the paint wall, and the wiring equipment is connected to the cable. Attached to the wiring box.

JP 2006-166663 A

  However, in the wiring box for burying concrete, the box cover has to be attached to the wiring box in order to provide the coating wall, and there is a problem that it takes time to attach the box cover. In addition, since the inside of the paint wall of the box cover is narrow, it is difficult to screw the lock nut and the screw part from the inside of the paint wall, and the workability of connecting the conduit connector to the wiring box is reduced. bad. Similarly, because the inner wall of the cover wall of the box cover is narrow, when connecting the conduit directly to the wiring box, it is difficult to check how much the end of the conduit has been inserted into the wiring box, and connect the conduit. Workability is poor. In addition, due to the above poor workability, the box cover may be removed from the wiring box for the connection of the conduit fittings or the confirmation of the connection state of the conduits. In this case, it may take time to reinstall the box cover. There was also a problem that workability was poor due to forgetting to attach the box cover.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose of the wiring box and wiring box is to be able to provide a coating wall on the wiring box without attaching a separate cover, and to improve the workability when connecting the conduit fitting or conduit. To provide an apparatus.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a wiring box embedded in a concrete wall or in a sprayed heat insulating material, the bottom wall having a square plate shape, and the opposite of the bottom wall A first side wall erected from one side edge, a second side wall erected from the other side edge facing each other, and a square frame shape provided on the opposite bottom wall side of the first and second side walls. None The coating wall which consists of the 1st side part extended along the said 1st side wall, and the 2nd side part extended along the 2nd side wall is integrally molded, The said 1st side wall and the said 1st side part Are located on substantially the same plane, and at least one of the pair of first side walls is provided with a connecting portion capable of connecting the conduit or conduit connector, and the conduit or conduit connector A part of the radial direction is positioned on the outer side of the second side wall with respect to the outer surface of the second side portion. In order to connect to the first side wall, the side portion of the first side wall is extended outward from the outer surface of the second side portion, and the outer side of the outer surface of the second side portion is The gist is that the bulging portion including the side portion of the first side wall, the second side wall, and the bottom wall is formed closer to the bottom wall than the coating wall.

  According to a second aspect of the present invention, in the wiring box according to the first aspect, the bulging portion is formed to connect a plurality of the conduits or conduit connectors to the first side wall in parallel. It is a summary.

  The invention according to claim 3 is the wiring box according to claim 1 or 2, wherein the diameter of the conduit or conduit connected to the first side wall is formed inside the bulging portion. The gist is that a part of the second side wall side in the direction is accommodated.

A fourth aspect of the present invention is the wiring box according to any one of the first to third aspects, wherein the connecting portion is a through-hole penetrating the first side wall. To do.
According to a fifth aspect of the present invention, in the wiring box according to the fourth aspect, the through hole is closer to the second side wall than the inner surface of the second side part from a position near the center part of the first side wall. The gist is that it is formed to extend to a position.

The gist of the invention described in claim 6 is that, in the wiring box according to claim 4 or 5, the through hole is closed by a knock portion.
Invention of Claim 7 is the wiring box as described in any one of Claims 1-6, In the said 2nd side wall which forms the said bulging part, the said electric pipe or electric pipe connection The gist is that an attachment hole capable of connecting the tool is formed.

  The invention according to claim 8 is the wiring box according to claim 7, wherein the protruding length of the bulging portion from the outer surface of the second side portion to the outside is connected to the attachment hole. The gist is that the conduit connector is set so as to slightly protrude from the inner surface of the second side portion or to be positioned on the same plane in a front view of the wiring box.

  The invention according to claim 9 is the wiring box according to any one of claims 1 to 8, wherein the first side wall or the coating wall is formed with a wiring fixture mounting portion. The wiring device mounting portion is formed with a screwing hole into which the fastener can be screwed, and the first side wall is formed with a connecting tube portion protruding from the outer peripheral surface of the connecting portion, and the connecting tube portion The inner surface is formed with a threaded portion to which the conduit fitting is screwed, and the protruding length of the connecting tube portion from the first side wall outer surface is the length of the conduit fitting that is screwed to the threaded portion. The gist of the invention is that the protruding end portion into the wiring box is set closer to the first side wall than the screw hole.

  A tenth aspect of the present invention is the wiring box according to any one of the first to ninth aspects, wherein the bulging portion extends over the entire extending direction of the second side wall between the first side walls. The gist is that it is formed to extend over.

  According to an eleventh aspect of the present invention, in the wiring box according to any one of the first to ninth aspects, the bulging portion is formed outward of the outer surfaces of both the second side portions. This is the gist.

The invention according to claim 12 is the wiring box according to any one of claims 1 to 9, wherein the bulging portion is formed on both first side walls. .
The invention according to claim 13 is a wiring box device comprising a wiring box embedded in a concrete wall or sprayed heat insulating material, and a conduit connector connected to the wiring box, wherein the wiring box Are a square plate-like bottom wall, a first side wall erected from one opposite side edge of the bottom wall, a second side wall erected from the other opposite side edge, and the first and first side walls. And a coating wall that is provided on the side opposite to the bottom wall of the two side walls and has a quadrangular frame shape and includes a first side extending along the first side wall and a second side extending along the second side wall. The first side wall and the first side portion are formed on substantially the same plane, and a plurality of conduit fittings can be connected to at least one of the pair of first side walls. A connecting part is provided, and a part of the radial direction of the conduit fitting is Since the outer side of the second side is positioned on the outer side of the second side wall and connected to the first side wall, the side of the first side wall extends outward from the outer side of the second side. And a bulging portion including a side portion of the first side wall, the second side portion, and a bottom wall on the outer side of the outer surface of the second side portion than the coating wall. The gist is that it is formed near the bottom wall.

  ADVANTAGE OF THE INVENTION According to this invention, while attaching a coating wall to a wiring box, without attaching a separate cover, the workability | operativity at the time of the connection of a conduit connector or a conduit can be improved.

The perspective view which shows the wiring box apparatus of 1st Embodiment. The perspective view which shows the wiring box of 1st Embodiment. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. The front view which shows the state which connected the conduit connector to the wiring box. FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5 showing a state in which the conduit connector is connected to the wiring box. The perspective view which shows the wiring box of 2nd Embodiment. The front view which shows the wiring box apparatus of 2nd Embodiment. The perspective view which shows another example of a wiring box.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wiring box device S is formed of a wiring box 11 having a square box shape and a conduit connector 30 connected to the wiring box 11. And the wiring box apparatus S is embed | buried in a concrete wall (not shown).

  As shown in FIG. 5, the conduit connector 30 includes a connector main body 31 having a cylindrical shape, and a screw is provided on the outer peripheral surface of one side portion (the lower side portion in FIG. 5) of the connector main body 31 in the axial direction. A portion 31a is formed, and a pipe connecting portion 32 is formed on the other side portion (upper portion in FIG. 5) of the connector main body 31. And as shown in FIG. 1, by inserting the edge part of the conduit D in the pipe connection part 32, it connects with the conduit connection tool 30 in the state by which the conduit D was prevented from coming off. . In addition, on the outer peripheral surface of the connector main body 31, a contact portion 31b is formed closer to the tube connection portion 32 than the screw portion 31a. The contact portion 31b contacts the outer surface of the wiring box 11 when the screw portion 31a is inserted into the wiring box 11. Furthermore, as shown in FIG. 5, the conduit connector 30 includes a lock nut 33 that can be screwed into the screw portion 31a.

  Next, the wiring box 11 will be described with reference to FIGS. 2 is the depth direction of the wiring box 11, the direction shown by the arrow Y2 is the width direction of the wiring box 11, and the direction shown by the arrow Y3 is the height direction of the wiring box 11. As shown in FIG. 3, various through-holes 12 a are formed in the square plate-like bottom wall 12 of the wiring box 11 for forming a wiring fixture mounting portion 27 described later. In addition, as shown in FIG. 2, a rectangular plate-like first side wall 13 is erected on each side edge of the bottom wall 12 facing the height direction (vertical direction), and in the width direction (right and left). A substantially rectangular plate-like second side wall 14 is erected on each of the other side edges facing each other in the direction). The wiring box 11 is formed in a square box shape by the bottom wall 12, the first side wall 13, and the second side wall 14.

  As shown in FIG. 3, a bar material insertion portion 21 is provided between the opposing inner surfaces of the second side walls 14 near the first side walls 13 on the inner surface of the bottom wall 12. Each bar member insertion portion 21 is formed with an insertion hole 21 a, and both ends of the insertion hole 21 a are opened from the outer surfaces of the second side walls 14. A bar member 22 (see FIG. 1) that can be bent by hand is inserted into the insertion hole 21a.

  As shown in FIG. 2, each first side wall 13 is formed with two through holes 13 a as connecting portions arranged in parallel in the length direction of the first side wall 13 (width direction of the wiring box 11). . The threaded portion 31a of the connector main body 31 can be inserted into the through hole 13a. Further, when the screw portion 31a is inserted through the through hole 13a, the contact portion 31b contacts the outer surface of the first side wall 13 so that the connector main body 31 does not pass through the through hole 13a. That is, the hole diameter of the through hole 13a is smaller than the outer diameter of the contact part 31b. In addition, the two through holes 13a are formed at positions spaced apart from each other by a predetermined distance so that the pipe connection portions 32 of both the connector main bodies 31 do not come into contact with each other when the screw portions 31a are inserted into the respective through holes 13a. ing. Each through hole 13a is closed by a knock portion 13b when the through hole 13a is not used.

  Further, a rectangular frame-shaped coating wall 15 is formed on the side of the first side wall 13 and the second side wall 14 opposite to the bottom wall 12 so as to face the bottom wall 12. The coating wall 15 is formed from a first side 15 a that extends in parallel along each first side wall 13 and a second side 15 b that extends in parallel along each second side wall 14. The length in the length direction (width direction of the wiring box 11) of the first side portion 15a is shorter than the length in the length direction of the first side wall 13, and the length of the first side portion 15a is the length of the first side portion 15a. Both ends in the direction are arranged so as to be located inward from both ends in the length direction of the first side wall 13. And in the planar view which match | combined the 1st side wall 13 and the 1st edge part 15a, it has a substantially T shape.

  The first side portion 15 a has an outer surface located on the same plane as the outer surface of the first side wall 13, and an inner surface located on the same plane as the inner surface of the first side wall 13. That is, the first side portion 15a has the same thickness as the first side wall 13 and is connected to the first side wall 13 so as to be flush with each other. The length of the second side portion 15b in the length direction (the height direction of the wiring box 11) is the same as the length of the second side wall 14 in the length direction (the height direction of the wiring box 11). . The second side wall 14 has a rectangular plate-like portion erected from the other side edge of the bottom wall 12, an edge of the rectangular plate-like portion, and a base edge of the second side portion 15b. It consists of the part which makes | forms the rectangular plate shape which connects. Therefore, the entire second side wall 14 is disposed on the outer side of the outer surface of the second side portion 15b.

  In the wiring box 11, both side portions in the length direction of the first side wall 13 are extended outward from the outer surface of the second side portion 15 b of the coating wall 15 in the width direction of the wiring box 11. Moreover, both the 2nd side walls 14 are arrange | positioned on the outer side rather than the 2nd side part 15b outer surface, and also the both 2nd side wall 14 side of the bottom wall 12 is an outer side rather than the 2nd side part 15b outer surface. It is arranged. Then, on both sides of the coating wall 15 in the width direction of the wiring box 11 (outside from the outer surfaces of the second side portions 15b), the side portion in the length direction of the first side wall 13, the second side wall 14, and the bottom A bulging portion 20 formed from a side portion of the wall 12 on the second side wall 14 side is formed. The bulging portion 20 is formed closer to the bottom wall 12 than the coating wall 15.

  As shown in FIG. 4, in the wiring box 11, the width W <b> 1 between the inner surfaces of the opposing second side walls 14 is longer than the width W <b> 2 between the inner surfaces of the opposing second side portions 15 b in the coating wall 15. Further, as shown in FIG. 5, in the wiring box 11, the height H <b> 1 between the inner surfaces of the opposing first side walls 13 is the same as the height H <b> 2 between the inner surfaces of the opposing first side portions 15 a in the coating wall 15. It has become.

  Therefore, as shown in FIG. 2, the wiring box 11 is formed such that the length in the width direction of the wiring box 11 closer to the bottom wall 12 than the coating wall 15 is formed by forming the bulging portion 20. It is longer than the length of the marginal wall 15 in the width direction. That is, the opening length of the internal space along the width direction of the wiring box 11 is narrowed by the coating wall 15, and coating is provided on both sides of the coating wall 15 in the width direction of the wiring box 11. Further, since the bulging portion 20 is formed in the wiring box 11, a step is formed between the outer surface of the second side portion 15 b and the outer surface of the second side wall 14.

  In the coating wall 15, a wiring fixture attaching portion 27 is formed on the inner surface of the central portion in the length direction of each first side portion 15 a. The wiring device mounting portion 27 is formed with a screw hole 27a into which a fastener (not shown) can be screwed. Further, as shown in FIG. 4, the through hole 13 a formed in the first side wall 13 has an edge on the central side in the length direction of the first side wall 13, and a wiring device mounting portion in the depth direction of the wiring box 11. 27 on the bottom wall 12 side. On the other hand, the through hole 13a extends from the center in the length direction of the first side wall 13 to the second side wall 14 side so that the edge on the second side wall 14 side reaches the position facing the inside of the bulging portion 20. Is formed. For this reason, when the conduit connector 30 is coupled to the first side wall 13 using the through-hole 13a, as shown in FIG. 6, a part in the radial direction of the screw part 31a (a part on the second side wall 14 side). Is accommodated in the bulging portion 20 and is located on the outer side of the outer surface of the second side portion 15b.

  As shown in FIG. 2, an attachment hole 14 a is formed at the center in the length direction of the second side wall 14. The threaded portion 31a of the connector main body 31 can be inserted into the attachment hole 14a. Further, when the screw portion 31a is inserted into the attachment hole 14a, the contact portion 31b contacts the outer surface of the second side wall 14 so that the connector main body 31 does not pass through the attachment hole 14a. The attachment hole 14a is closed by a knock portion 14b when the attachment hole 14a is not used.

  In the bulging portion 20, a reinforcing wall 23 is formed at a position sandwiching the attachment hole 14 a in the length direction of the second side wall 14. The reinforcing wall 23 is constructed on the inner surface of the second side wall 14 and the inner surface of the bottom wall 12. The inner end surface of the reinforcing wall 23 is located on the same plane as the inner surface of the second side portion 15 b of the coating wall 15. The protruding length from the outer surface of the second side portion 15b of the bulging portion 20 to the outer side, that is, from the inner end surface of the reinforcing wall 23 (the inner surface of the second side portion 15b of the coating wall 15) to the inner surface of the second side wall 14. The length is slightly shorter than the thickness of the lock nut 33. Therefore, as shown in FIG. 4, when the lock nut 33 is screwed into the screw portion 31 a inserted through the attachment hole 14 a, one end portion of the lock nut 33 is the second side portion 15 b in the front view of the wiring box 11. It protrudes slightly into the wiring box 11 from the inner surface.

  Next, a method for forming the wiring box device S composed of the wiring box 11 and the conduit fitting 30 will be described. First, the various through holes 12a of the wiring box 11 are closed with a toro-preventive tape, and a sealed internal space is formed in the wiring box 11 except for the coating wall 15. Next, as shown in FIG. 1, the bar material 22 is inserted into the insertion holes 21 a of both the bar material insertion portions 21, and both side portions in the length direction of the bar material 22 are protruded from the outer surfaces of both the second side walls 14. Next, the both side portions of the bar member 22 are bound and fixed to the stake rebar 24 of the concrete wall by the bind wire 25 or the like. Then, the wiring box 11 is supported with respect to the rebar rebar 24.

  Next, both knock portions 13b of the upper first side wall 13 are removed from the first side wall 13 to open the through holes 13a. Next, the lock nut 33 is disposed inside the wiring box 11 through the inside of the coating wall 15, and the end surface of the lock nut 33 is brought into contact with the inner surface of the first side wall 13. Then, while maintaining the state in which the end face of the lock nut 33 is in contact with the inner surface of the first side wall 13 with one hand, the screw part 31a of the connector body 31 is inserted into the through hole 13a with the other hand and the lock nut 33 is inserted. Thereafter, the connector main body 31 is rotated while preventing the lock nut 33 from rotating, and the screw portion 31 a is screwed into the lock nut 33. When the contact part 31b contacts the outer surface of the first side wall 13, the first side wall 13 is sandwiched between the contact part 31b and the lock nut 33, and the conduit connector 30 is connected to the first side wall 13, so that the wiring box A device S is formed.

  Thereafter, the conduit D is connected to the conduit connector 30 and a cable (not shown) is inserted into the conduit D, and the cable is drawn into the wiring box 11 with an extra length. When constructing a concrete wall, a mold is erected before and after the wiring box 11, and an opening end of the coating wall 15 is brought into contact with an inner surface of the front mold. When concrete is placed, the periphery of the coating wall 15 (painting) is buried in the concrete, and the cable is protected by the conduit D. After the formwork is removed, the inside of the wiring box 11 is exposed to the outside of the concrete wall from the inside of the coating wall 15, and the cable in the wiring box 11 is pulled out from the coating wall 15 and is wired to the cable (not shown). Are connected to the wiring box 11. Finally, the opening of the coating wall 15 is closed by a decorative plate (not shown).

According to the first embodiment, the following effects can be obtained.
(1) The coating wall 15 is integrally formed in the wiring box 11. For this reason, since the coating wall 15 is provided in the wiring box 11, it is not necessary to attach the box cover provided with the coating wall to the wiring box 11, and the labor for mounting the box cover can be saved.

  (2) Although the opening of the wiring box 11 is narrowed by the coating wall 15, the inner surface of the first side wall 13 in the wiring box 11 and the inner surface of the first side portion 15a of the coating wall 15 are located on the same plane, The inner surface of the first side wall 13 is not in a position recessed from the inner surface of the coating wall 15. For this reason, the operation | work which makes the end surface of the lock nut 33 contact | abut to the inner surface of the 1st side wall 13 from the opening side of the wiring box 11, and screwing the lock nut 33 and the screw part 31a easily is maintained. It can be carried out. Therefore, even if the opening of the wiring box 11 is narrowed by the coating wall 15, the workability of the operation of connecting the conduit connector 30 to the wiring box 11 can be improved. As a result, since it is not necessary to remove the box cover from the wiring box 11 in order to improve the workability of connecting the conduit connector 30 to the wiring box 11, the box cover is again attached after the conduit connector 30 is connected. There is no trouble of attaching and there is no possibility of forgetting to attach the box cover.

  (3) By forming the bulging portion 20 in the wiring box 11, the side portion of the first side wall 13 extends outward from the outer surface of the second side portion 15 b of the coating wall 15. Therefore, even if the opening is narrowed by the coating wall 15, it is possible to connect the first side wall 13 in a state where the two conduit fittings 30 are arranged in parallel.

  (4) Inside the bulging portion 20, a part in the radial direction of the screw portion 31 a of the conduit connector 30 connected to the first side wall 13 can be accommodated. Therefore, by forming the bulging portion 20, the conduit connector 30 can be connected to a position near the second side wall 14, and contact between the conduit connectors 30 can be eliminated. As a result, the connecting tool body 31 can be smoothly rotated when the lock nut 33 and the screw portion 31a are screwed together.

  (5) A connecting portion for connecting the conduit connector 30 to the first side wall 13 is a through hole 13 a penetrating the first side wall 13. For this reason, the screw part 31a of the conduit connector 30 can be disposed in the bulging part 20 through the through hole 13a. Therefore, a plurality of conduit fittings 30 can be connected in parallel to the first side wall 13 using the bulging portion 20 by using the connecting portion as the through hole 13a.

  (6) The through hole 13a is closed by the knock portion 13b, and the knock portion 13b is removed when the conduit connector 30 is coupled. Therefore, when the wiring box 11 is embedded in the concrete wall, the knock portion 13b can prevent the concrete from entering the wiring box 11.

  (7) Although the opening of the wiring box 11 is narrowed by the coating wall 15, when the bulging portion 20 is formed, the coating wall 15 is closer to the bottom wall 12 than the coating wall 15 in the wiring box 11. A wider space is formed. For this reason, after the construction of the concrete wall, the decorative plate for closing the opening of the coating wall 15 can be made small, and the two side pipes are connected to the first side wall 13 via the two pipe connection tools 30. D can be linked.

  (8) The bulging portion 20 is formed so as to extend in the direction in which the second side wall 14 extends between the first side walls 13, that is, over the entire length direction of the second side wall 14. Therefore, the inside of the wiring box 11 can be widened, and for example, the extra length portion of the cable drawn into the wiring box 11 can be lengthened.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, the same reference numerals are given to the same configurations as those of the already described embodiments, and the overlapping description is omitted or simplified.

  As shown in FIG. 7, the first side wall 13 of the wiring box 41 of the second embodiment is formed with a connection tube portion 28 protruding from the outer peripheral surface of the through hole 13 a, and the inner surface of the connection tube portion 28. A threaded portion 28a to which the threaded portion 31a of the conduit connector 30 is threaded is formed. The connecting cylinder part 28 is formed in a cylindrical shape. The screwing portions 28 a are formed in a thin plate shape extending along the inner peripheral surface of the connection tube portion 28, and are formed at three locations at equal intervals along the circumferential direction of the connection tube portion 28. Then, the conduit connector 30 is coupled to the connection tube portion 28 in a state where the screw portion 31 a is screwed to the connection tube portion 28 and the contact portion 31 b is contacted to the tip of the connection tube portion 28.

  As shown in FIG. 8, the protruding length T1 from the outer surface of the first side wall 13 of the connecting tube portion 28 along the height direction of the wiring box 41 is the conduit connector 30 screwed to the screwed portion 28a. The tip of the screw portion 31 a (projecting end portion) into the wiring box 41 is set so as to be positioned closer to the first side wall 13 than the screw hole 27 a of the wiring device mounting portion 27.

  Further, in the wiring box 41, both side portions of the first side wall 13 in the length direction are extended outward from the outer surface of the second side portion 15 b of the coating wall 15. In addition, both the second side walls 14 are arranged such that both side portions (upper and lower side portions) in the height direction of the wiring box 41 are disposed outward from the outer surface of the second side portion 15b. Both the second side wall 14 sides of both sides (upper and lower sides) in the height direction of the box 41 are disposed on the outer side of the outer surface of the second side 15b. Then, on both sides of the coating wall 15 in the width direction of the wiring box 11 (outside from the outer surfaces of the second side portions 15b), the side portion in the length direction of the first side wall 13, the second side wall 14, and the bottom A bulging portion 42 formed from a side portion of the wall 12 on the second side wall 14 side is formed. The bulging portion 42 is formed closer to the bottom wall 12 than the coating wall 15.

According to the said 2nd Embodiment, in addition to the description similar to (1)-(7) of 1st Embodiment, the following effects can be acquired.
(9) A connecting tube portion 28 is formed on the outer surface of the first side wall 13, and a protruding length T1 of the connecting tube portion 28 from the outer surface of the first side wall 13 is screwed to the screwed portion 28 a. The tip of the screw part 31 a into the 30 wiring box 41 is set so as to be located closer to the first side wall 13 than the screw hole 27 a of the wiring device mounting part 27. For this reason, when the finishing wall is formed on the concrete wall and the front side of the wiring box 41 is concealed, the finishing wall is cut with a cutting tool and the wiring box 41 is opened. The cutting tool to be moved moves along the tip of the screw portion 31a. At this time, if the tip of the screw portion 31a is positioned closer to the first side wall 13 than the screw hole 27a, the screw hole 27a is moved forward from the opening of the wiring box 41 when the wiring box 41 is opened by a cutting tool. You can go to.

  (10) In the wiring box 41, the bulging portions 42 are formed on both upper and lower side portions (both first side wall 13 sides) on the second side wall 14 side. For this reason, the bulging part 42 is formed only in the position related to the connection of the conduit connector 30, and the enlargement of the wiring box 41 can be suppressed.

In addition, you may change this embodiment as follows.
As shown in FIG. 9, in the second embodiment, the bulging portion 42 is provided only on the upper and lower side portions (on the both first side wall 13 side) of either one of the second side walls 14. It may be formed.

-In 2nd Embodiment, the bulging part 42 may be formed in the both 2nd side wall 14 side only in any one 1st side wall 13 side.
In the second embodiment, the bulging part 42 may be formed in the wiring box 41 only at one place.

-In 2nd Embodiment, you may change arbitrarily the protrusion length T1 of the connection cylinder part 28. FIG.
The protrusion length of the bulging portion 20 outward from the outer surface of the second side portion 15b is second when the lock nut 33 of the conduit connector 30 connected to the attachment hole 14a is in front view of the wiring box 11. It may be set so as to be positioned on the same plane as the inner surface of the side portion 15b, or to be positioned inside the second side portion 15b.

-It is not necessary to form the attachment hole 14a in the bulging part 20.
The conduit connector 30 does not have to be connected to the first side wall 13 by screwing the screw portion 31a and the lock nut 33, and a locking claw formed at one end of the connector main body 31 is provided on the inner surface of the first side wall 13. And the conduit connector 30 may be coupled to the first side wall 13.

  The conduit D may be connected to the first side wall 13 by directly inserting the conduit D into the through hole 13 a of the first side wall 13. In this case, although the opening of the wiring box 11 is narrowed by the coating wall 15, the inner surface of the first side wall 13 and the inner surface of the first side portion 15a of the coating wall 15 in the wiring box 11 are located on the same plane, The inner surface of the first side wall 13 is not in a position recessed from the inner surface of the coating wall 15. For this reason, it can be confirmed easily how much the end of the conduit D has been inserted into the wiring box 11, and the workability of the operation of connecting the conduit D can be improved.

-You may change the number of the through-holes 13a, and a diameter according to the magnitude | size of the conduit connector 30 or the conduit D connected with the 1st side wall 13, and the size of the conduit connector 30 or the conduit D.
-In 1st and 2nd embodiment, the wiring box apparatus S may be embed | buried in the spraying heat insulating material.

In the embodiment, the through holes 13 a are formed in both the first side walls 13, but the through holes 13 a may be formed only in one of the first side walls 13.
The wiring device mounting portion 27 may be formed from the inner surface of the first side wall 13.

  In the embodiment, the coating wall 15 is formed such that the first side 15 a extends in parallel along the first side wall 13 and the second side 15 b extends in parallel along the second side wall 14. However, the first side 15 a may be slightly inclined with respect to the first side wall 13, or the second side 15 b may be slightly inclined with respect to the second side wall 14.

  In the embodiment, the first side portion 15a and the first side wall 13 are formed with the same thickness, but the lock nut 33 and the screw portion 31a are screwed together while maintaining the state in which the lock nut 33 is in contact. If the work can be easily performed, the first side 15a and the first side wall 13 may be formed with different thicknesses.

  -In each embodiment, the through-hole 13a may be formed so that substantially the whole may be formed in the 1st side wall 13, and a part may hang over the 1st edge part 15a.

  D ... conduit, S ... wiring box device, T1 ... projection length, 11, 41 ... wiring box, 12 ... bottom wall, 13 ... first side wall, 13a ... through hole as connecting portion, 13b ... knock portion, 14 ... 2nd side wall, 14a ... Mounting hole, 15 ... Coated wall, 15a ... 1st edge part, 15b ... 2nd edge part, 20, 42 ... Swelling part, 27 ... Wiring fixture attaching part, 27a ... Screwing A hole, 28 ... connection cylinder part, 28a ... screwing part, 30 ... conduit tube connector.

Claims (13)

A wiring box embedded in a concrete wall or sprayed insulation,
A square plate-like bottom wall, a first side wall erected from one opposing side edge of the bottom wall, a second side wall erected from the other opposing side edge, and the first and second side walls And a coating wall formed of a first side part extending along the first side wall and a second side part extending along the second side wall, which is provided on the opposite bottom wall side and has a rectangular frame shape. And
The first side wall and the first side are located on substantially the same plane;
In addition, at least one of the pair of first side walls is provided with a connecting portion that can connect the conduit or the conduit connector, and a part of the conduit or the conduit connector in the radial direction of the second side portion is provided. In order to be positioned on the outer side of the second side wall from the outer surface and connected to the first side wall, the side portion of the first side wall extends outward from the outer surface of the second side portion, and A bulging portion including a side portion of the first side wall, the second side wall, and a bottom wall is formed on the outer side of the outer surface of the second side portion closer to the bottom wall than the coating wall. A wiring box characterized by that.   2. The wiring box according to claim 1, wherein the bulging portion is formed in order to connect a plurality of the conduits or conduit connectors to the first side wall in parallel.   The part of the 2nd side wall side in the radial direction of the said electric conduit connected to the said 1st side wall or the conduit connector is accommodated inside the said bulging part. Wiring box.   The wiring box according to claim 1, wherein the connecting portion is a through-hole penetrating the first side wall.   The wiring box according to claim 4, wherein the through-hole is formed to extend from a position near the center of the first side wall to a position near the second side wall rather than an inner surface of the second side part.   The wiring box according to claim 4, wherein the through hole is closed by a knock portion.   The said 2nd side wall which forms the said bulging part is provided with the attachment hole which can connect the said conduit or a conduit connector, The structure as described in any one of Claims 1-6. Wiring box.   The protruding length of the bulging portion outward from the outer surface of the second side portion is determined by the inner surface of the second side portion when the conduit connector connected to the attachment hole is viewed from the front of the wiring box. The wiring box according to claim 7, wherein the wiring box is set so as to protrude slightly from or from the same plane.   A wiring fixture mounting portion is formed in the first side wall or the coating wall, and a screwing hole into which a fastener can be screwed is formed in the wiring fixture mounting portion. A connecting tube portion protruding from the outer peripheral surface of the connecting portion is formed, and a screwed portion to which the conduit fitting is screwed is formed on the inner surface of the connecting tube portion, and the first side wall outer surface of the connecting tube portion The projecting length from is set so that the projecting end portion of the conduit connector screwed into the threaded portion into the wiring box is positioned closer to the first side wall than the threaded hole. The wiring box as described in any one of Claims 1-8.   The wiring box according to claim 1, wherein the bulging portion is formed so as to extend over the entire extending direction of the second side wall between the first side walls.   The wiring box according to any one of claims 1 to 9, wherein the bulging portion is formed on the outer side of the outer surfaces of the second side portions.   The wiring box according to any one of claims 1 to 9, wherein the bulging portion is formed on both first side walls. A wiring box device comprising a wiring box embedded in a concrete wall or sprayed heat insulating material, and a conduit fitting connected to the wiring box,
The wiring box includes a square plate-like bottom wall, a first side wall erected from one opposing side edge of the bottom wall, a second side wall erected from the other opposing side edge, and the first side wall A coating wall which is provided on the side opposite to the bottom wall of the first and second side walls and has a quadrangular frame shape and which includes a first side extending along the first side wall and a second side extending along the second side wall; , Is integrally molded,
The first side wall and the first side are located on substantially the same plane;
In addition, a connecting portion that enables connection of the plurality of conduit fittings is provided on at least one of the pair of first side walls, and a part of the conduit fitting in the radial direction is formed from the outer surface of the second side portion. Is located on the outer side of the second side wall so as to be connected to the first side wall, the side portion of the first side wall extends outward from the outer surface of the second side portion, and the second side A bulging portion including a side portion of the first side wall, the second side portion, and a bottom wall is formed on the outer side of the outer surface of the side portion closer to the bottom wall than the coating wall. A wiring box device characterized by that.

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