JP4456642B2 - Wiring box - Google Patents

Description

  The present invention relates to a wiring box in which a wiring device or an adapter for connecting the conduit is connected in order to accommodate a wiring device or the like and protect a cable connected to the wiring device.

2. Description of the Related Art Conventionally, in order to install a wiring device or the like on a wall surface in a building, a wiring box is installed in the wall. A cable is drawn into the wiring box, and the cable is protected by a conduit that is a flexible tube made of synthetic resin connected to the wiring box (see, for example, Patent Document 1). The wiring box (wiring box in Patent Document 1) is formed in a square box shape having an opening on the front surface. This wiring box is formed by a bottom wall, a pair of short side walls facing each other up and down the bottom wall, and a pair of long side walls facing each other right and left. The pair of short side walls are provided in the wiring box as pipe connection walls, and are provided with two insertion holes, and the insertion holes include two types: a conduit tube and a small conduit tube having a smaller diameter than the conduit tube. It is formed to be connectable.
JP 2003-134737 A

  However, in the above-mentioned wiring box, it has been necessary to connect the conduit to the tube connection wall so that the inside thereof faces the inside of the box body. Therefore, in the pipe connection wall, the pair of insertion holes are formed in a limited area inside the peripheral edge of the pipe connection wall. Therefore, it is necessary to form a pair of insertion holes in a limited area of the pipe connection wall or to secure a space between the insertion holes, and there is a problem that the pipe connection wall is not effectively used. It was.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a wiring box that can use the pipe connection wall effectively without increasing the size of the entire outer shell by utilizing the side edge of the pipe connection wall.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a wiring box including a box body formed in a bottomed square box shape having an opening on the front surface, and is relative to the upper and lower sides of the box body. At least one of the facing upper wall and lower wall is formed as a tube connection wall to which a conduit or adapter can be connected, and opposite side walls are formed on the left and right sides of the box body. In at least one corner portion, the tube connecting wall extends outwardly of the box body, and a portion of the side wall forming the corner portion bulges outward. An outlet is provided, and the tube connecting wall is formed with a connecting long hole along its length direction, and one end edge of the connecting long hole is formed on one side wall of the bulging portion. Reach inside The conduit or adapter connected to the tube connection wall is partially disposed in the bulging portion, and all or part of the inside faces the inside of the box body. Thus, the gist is that it is formed to be connectable to the pipe connection wall.

  According to a second aspect of the present invention, in the wiring box according to the first aspect, an inner side of the bulging portion communicates with an internal space of the box body, and a conduit or adapter connected to the pipe connection wall. The gist of the invention is that a space that allows a part of the shaft to enter is formed.

  According to a third aspect of the present invention, in the wiring box according to the first or second aspect, at one of the upper and lower end portions of the opposing side walls, an insertion opening is inserted into one of the upper and lower ends. The gist is that the insertion opening is formed so as to penetrate the side wall, and the insertion opening is formed so as to communicate with the other end edge of the connection long hole.

  The invention according to claim 4 is a wiring box including a box body formed in a bottomed square box shape having an opening on the front surface, and an upper wall and a lower wall facing each other above and below the box body, It is formed as a pipe connection wall to which a conduit or adapter can be connected, and opposite side walls are formed on the left and right sides of the box body, and the box body is formed on one of the opposite side walls. When fixing to an object, a contact seat that contacts the structure is protruded outward, and the corner of the box body on the side wall side where the contact seat protrudes is provided at the tube connection wall. Is extended outwardly of the box body, and a bulging part formed by a part of the side wall from which the abutting seat part forming the corner part protrudes outwardly. The inner surface of the bulging portion is A conduit or adapter located outside the outer surface of the side wall on which the seat is projected and connected to the tube connecting wall is disposed in the bulging portion, and a part of the radial direction is disposed inside the bulging portion. The gist of the present invention is that it can be connected to the pipe connection wall so that all or part of the box faces the inside of the box body.

(Function)
According to the first aspect of the present invention, the bulging portion is formed in at least one corner portion of the box body, and the pipe connection wall forming the bulging portion protrudes outward from the outer surface of the box body. It is formed to extend. Therefore, it becomes possible to use the site | part which is a side edge part of a pipe connection wall, and forms a bulging part, for example, to connect a conduit tube. In addition, a long connecting hole is formed in the pipe connecting wall along the length direction thereof. Therefore, the conduit can be moved along the connection long hole, and the end of the conduit can be surely entered into the space.

  According to the second aspect of the present invention, a space portion communicating with the internal space in the box body is formed inside the bulging portion. Therefore, the internal space and the space can be used as a space for allowing a part of the conduit tube or the adapter along the axial direction to enter.

According to the third aspect of the present invention, it is possible to insert a conduit from the insertion opening into the connection long hole.
According to the fourth aspect of the present invention, the abutment seat portion protrudes from the side wall where the bulge portion is formed. Therefore, the bulging portion is located in a space formed between the outer surface of the contact seat portion and the outer surface of the side wall on which the contact seat portion is formed. Therefore, if the protruding length of the bulging portion is set to be shorter than the protruding length of the contact seat portion, the maximum length along the left-right direction of the box body is long even if the bulging portion is formed on the side wall. Never become.

  As described above in detail, according to the present invention, a wiring box that can effectively use the pipe connection wall without increasing the size of the entire outer shell by using the side edge portion of the pipe connection wall is provided. Can do.

Hereinafter, an embodiment in which the present invention is embodied in a wiring box will be described with reference to the drawings.
First, as shown in FIG. 1, a large-diameter conduit 10 as a conduit that can be connected to a synthetic resin wiring box 11 will be described. The large-diameter conduit 10 is a synthetic resin flexible conduit defined in JIS C8411 and is a 22 mm nominal CD tube. The large-diameter conduit 10 is formed in a concavo-convex shape by repeatedly forming a ridge portion 10a having a ring shape with the same diameter protruding in the circumferential direction and a ridge portion 10b having a ring shape with the same diameter. ing. In addition, the outer diameter in the convex part 10a of the large diameter conduit 10 is set to 27.5 mm. Further, as shown in FIG. 7, the small-diameter conduit 33 that is one size smaller than the large-diameter conduit 10 is a synthetic resin-made flexible conduit standardized to the JISC8411 and a 16-mm CD tube. The conduit tube is one size smaller than the large-diameter conduit tube 10. Similar to the large-diameter conduit 10, the small-diameter conduit 33 is formed in a concavo-convex shape having a ridge (not shown) and a recess (not shown), and the outer diameter of the ridge is set to 21 mm. Has been. In addition, the small diameter conduit 33 is the same size as the conduit of the background art.

  Next, the wiring box 11 will be described. The wiring box 11 includes a box body 13 formed in a bottomed square box shape having an opening on the front surface. In addition, let the opening side of the box main body 13 be a front surface (front surface), and let the bottom wall 12 side be a rear surface (back surface). The box body 13 includes a bottom wall 12 having a rectangular shape, and an upper wall and a lower wall that are erected from opposite edges of the bottom wall 12 are an upper pipe connection wall 12a and a lower pipe connection wall, respectively. 12b is provided in the box body 13. The left end of each of the upper pipe connection wall 12 a and the lower pipe connection wall 12 b extends outward from the outer surfaces of the upper and lower ends on the left side of the box body 13. On the other hand, a left wall 12c and a right wall 12d are erected on the edges opposite to the left and right of the bottom wall 12, and the thickness of the left wall 12c and the right wall 12d is set to 2.5 mm. An inner space S1 of the box body 13 is formed inside the box body 13 surrounded by the bottom wall 12, the upper pipe connection wall 12a, the lower pipe connection wall 12b, the left side wall 12c, and the right side wall 12d. Yes.

  As shown in FIGS. 1 and 4, a contact seat 14 having a certain thickness is formed to protrude from the central portion of the left side wall 12c, and the right side wall 12d is not formed with the contact seat 14 and is planar. Is formed. The maximum length L1 in the left-right direction of the wiring box 11 including the abutment seat portion 14 is set to 67 mm. The left side wall 12c and the right side wall 12d are each formed with three fixing holes 15 penetrating the side walls 12c and 12d, and the fixing holes 15 are formed so that the fixing screws 17 can be inserted therethrough. Then, when the fixing screw 17 is inserted into the fixing hole 15 and the fixing screw 17 is fixed to the column 16 as a structure in the building and the wiring box 11 is fixed to the column 16, the contact seat portion 14 is formed. The box body 13 is disposed at a position that contacts the side surface of the column 16 and is separated from the column 16 by a certain distance. In addition, although the protruding piece protrudes on the outer surface of the contact seat portion 14, the protruding piece bites into the column 16 when the wiring box 11 is fixed to the column 16, and thus the maximum length L1. Shall not be included.

  The upper and lower ends, which are part of the left side wall 12c, are formed so as to bulge outward (to the left). That is, the upper and lower ends of the left side wall 12c on the upper side pipe connection wall 12a and the lower side pipe connection wall 12b bulge to the left, respectively, and the upper and lower side pipe connection walls 12a and The left end edge of the side pipe connecting wall 12b is connected to form a bulging portion 19 at both the left and right corner portions. Accordingly, the bulging portions 19 are formed at two corner portions of the four corner portions of the box body 13. A space S2 is formed inside each bulging portion 19, and each space S2 communicates with the internal space S1. From the center of the box body 13 to the inside of the upper and lower parts of the box body 13 A space expanded leftward is also formed. Moreover, the opening width to the up-down direction of space part S2 is formed short, and the opening width is formed shorter than the width | variety of the blade part of cutting tools, such as a saw, for example.

  As shown in FIG. 4, in the box main body 13, the opening width W1 of the box main body 13 between the left inner side surface of the bulging portion 19 and the inner side surface of the right side wall 12d is set to 62 mm. On the other hand, the opening width W2 of the box body 13 between the inner side surface of the left side wall 12c where the bulging portion 19 is not formed and the inner side surface of the right side wall 12d is set to 55 mm. The maximum length L1 in the left-right direction of the box body 13 between the outer surface of the bulging portion 19 and the outer surface of the right side wall 12d is set to 67 mm. That is, the protruding length of the bulging portion 19 from the outer side surface of the left side wall 12c is set to be the same as the protruding length of the contact seat portion 14 from the outer side surface of the left side wall 12c.

  As shown in FIGS. 1 and 2 (a), the upper pipe connecting wall 12a and the lower pipe connecting wall 12b have connecting long holes 20 along the length direction of the connecting portion of the large-diameter conduit tube 10. It is formed as. Each of the connection long holes 20 is formed so as to extend from the right end edge of the upper pipe connection wall 12a and the lower pipe connection wall 12b toward the left end edge. As shown in FIG. 2B, the left end edge of each connection long hole 20 extends until it reaches the inner surface of the left side wall 12 c that forms the bulging portion 19.

  As shown in FIGS. 1 and 3, insertion openings 21 are formed at both upper and lower ends of the right side wall 12 d so as to penetrate the right side wall 12 d, and each insertion opening 21 is a side of the box body 13. It is formed to open to the right. Each connection long hole 20 is formed so as to communicate with the insertion opening 21, and the large-diameter conduit 10 can be inserted into each connection long hole 20 from each insertion opening 21. The opening width in the width direction of each connection long hole 20 and the opening width of the insertion opening 21 are formed to be the same as or slightly larger than the outer diameter of the protruding portion 10 a of the large-diameter electric conduit 10.

  As shown in FIGS. 2A, 2 </ b> B, and 3, the engagement protrusion 22 is formed along the inner periphery of each connection long hole 20. Each engagement protrusion 22 is formed so as to extend from the insertion opening 21 side of the connection long hole 20 toward the back of the connection long hole 20. In each engagement protrusion 22, the length between the opposing inner edges is formed to be the same as or longer than the outer diameter of the concave portion 10b of the large-diameter conduit 10. When the large diameter conduit 10 is inserted into the connection long hole 20 from the insertion opening 21, the engagement protrusion 22 can be engaged with the concave strip portion 10 b of the large diameter conduit 10. . In each engagement ridge 22, a retaining portion 23 having a thickness dimension larger than that of the engagement ridge 22 is formed on the end edge on the insertion opening 21 side. The thickness dimension of the retaining portion 23 is longer than the interval between the pair of adjacent protruding portions 10a and the opening width of the recessed portions 10b.

  As shown in FIG. 2 (a), an engaging plate 24 as a connecting portion having an elongated plate shape is installed in the connecting long hole 20 so as to extend in the left-right direction of the box body 13. The engaging plate 24 is provided in the connecting long hole 20 by connecting connecting pieces 25 provided at a plurality of locations on one side edge extending in the length direction to the inner peripheral edge of the engaging protrusion 22. . A conduit engaging portion 24a is formed on the other side edge of the engaging plate 24 extending in the length direction, and the conduit engaging portion 24a is formed thinner than the one side edge. Then, by engaging the conduit engaging portion 24a with the concave portion of the small-diameter conduit 33, the small-diameter conduit 33 is connected to the connection long hole 20 as shown in FIG. Connected. Further, in the conduit engaging portion 24a, a retaining portion 26 similar to the retaining portion 23 is formed at the distal end portion located on the insertion opening 21 side and substantially in the center in the length direction. The thickness dimension of the retaining portion 26 is longer than the interval between a pair of adjacent ridge portions of the small diameter conduit 33 and the opening width of the ridge portion.

  As shown in FIG. 6, a holding frame 31 made of a metal plate is attached to the front side of the wiring box 11, and the holding frame 31 is formed so as to be able to hold a pair of wiring devices 29. Further, as shown by a two-dot chain line in FIG. 6, a decorative plate 32 is attached to the wall surface, and the decorative plate 32 covers the device installation hole 30 drilled in the wall material 28, the holding frame 31, and the like. The The length of the decorative plate 32 in the width direction is set to 70 mm, which is longer than the opening widths W1 and W2 (62 mm and 55 mm) of the box body 13.

Next, the usage method and operation of the wiring box 11 having the above configuration will be described.
As shown in FIG. 1, the pillar 16 is erected in the building. First, in the connection long hole 20 of the upper pipe connection wall 12 a, the coupling pieces 25 are respectively separated from the engagement protrusions 22, and the engagement plates 24 are removed from the engagement protrusions 22. Next, the outer surface of the abutment seat 14 is brought into contact with the side surface of the column 16, and among the three fixing holes 15 formed in the left side wall 12c, the fixing screw 17 is inserted from the fixing hole 15 located in the center, The fixing screw 17 is fixed to the column 16 and the wiring box 11 is fixed to the column 16. At this time, a bulging portion 19 is formed at each of the upper and lower portions of the abutting seat portion 14, and the protruding length of the bulging portion 19 from the left side wall 12 c is the same as the protruding length of the abutting seat portion 14. ing. Therefore, when the wiring box 11 is pressed against the side of the column 16 in order to bring the abutment seat 14 into contact with the side surface of the column 16, the three surfaces of the abutment seat portion 14 and the pair of bulging portions 19 are on the side surface of the column 16. Abut. Therefore, the box main body 13 is not tilted, and the state in which the contact seat 14 is in contact with the column 16 is maintained, the fixing screw 17 is inserted into the fixing hole 15, and the fixing screw 17 is fixed to the column 16. Work is done easily.

  Subsequently, the large-diameter conduit tube 10 is moved in the radial direction toward the wiring box 11 from the right side of the wiring box 11 fixed to the column 16. Then, the end portion of the large-diameter conduit tube 10 is inserted into the connection long hole 20 from the insertion opening 21 and pushed into the connection long hole 20, and the engagement protrusion 22 is inserted into the concave portion 10 b. To do. Then, the large diameter conduit 10 is pushed into the connection long hole 20 along the engagement protrusion 22, and the lower end of the large diameter conduit 10 is formed in the internal space S1 as shown in FIGS. The outer surface of the large-diameter conduit 10 comes into contact with the inner surface of the left side wall 12c forming the bulging portion 19. That is, in the upper pipe connection wall 12a, a portion forming the bulging portion 19 protrudes leftward from the outer surface of the left wall 12c. Therefore, it becomes possible to use the protruding portion for connecting the large-diameter conduit tube 10 to the upper tube connecting wall 12a.

  As a result, the large-diameter conduit tube 10 is connected to the wiring box 11 in a state in which the left side, which is a part of the lower end, enters the space S2, and the right side of the lower end enters the internal space S1 in the box body 13. Is done. At this time, a part (lower end portion) along the axial direction of the large-diameter conduit tube 10 enters the box body 13. A part of the inside of the large-diameter conduit 10 enters the space S2, and the remaining part faces the interior space S1. Here, since the opening width W1 of the box body 13 including the internal space S1 and the space part S2 is set to 62 mm, the end of the large-diameter conduit 10 having an outer diameter of 27.5 mm enters the box body 13. In this state, a space having an opening width of 34.5 mm exists in the box body 13. Further, since the maximum length L1 in the left-right direction of the box body 13 is set to 67 mm, the box excluding the large-diameter conduit tube 10 in a state where the large-diameter conduit tube 10 is connected to the upper tube connection wall 12a. The length of the main body 13 in the left-right direction is 39.5 mm.

  Next, the second large-diameter conduit tube 10 is inserted into the connection long hole 20 from the insertion opening 21 and connected. Then, since the upper portion of the box main body 13 has a space and a width that can accommodate the second large-diameter conduit 10, the lower end of the second large-diameter conduit 10 also enters the box main body 13. Connected to the wiring box 11. As a result, even if two large-diameter conduits 10 are connected to the wiring box 11, the two large-diameter conduits 10 having a total length of 55 mm are accommodated within a length of 67 mm in the left-right direction. The second large-diameter conduit 10 does not protrude outward from the outer surface of the right side wall 12d of the box body 13. That is, in the upper pipe connection wall 12a, the portion that forms the bulging portion 19 is extended, so that the pair of large-diameter electric pipes 10 are placed on the upper pipe connection wall 12a within the area of the upper pipe connection wall 12a. It becomes possible to connect to.

  As shown in FIG. 5, since the engagement protrusion 22 is engaged with the concave portion 10b, a pair of upper and lower projections are applied even if a force for moving the large-diameter conduit tube 10 in the axial direction is applied. The movement of the strip 10a and the engagement projection 22 is prevented by contact. Further, since the thickness of the retaining portion 23 is longer than the opening width of the concave portion 10b, even if a force for moving the large-diameter conduit tube 10 toward the insertion opening 21 acts, the pair of retaining portions 23 are not provided. The large diameter conduit 10 is prevented from easily moving toward the insertion opening 21 by abutting against the outer surface of the large diameter conduit 10 (protruded portion 10a). Since the end surface of the large diameter conduit 10 abuts against the inner surface of the left side wall 12c that forms the bulging portion 19, the large diameter conduit 10 can be prevented from entering the box body 13 more than necessary.

  Now, after a pair of large-diameter conduits 10 are connected to the wiring box 11 and a cable (not shown) is inserted into each large-diameter conduit 10, as shown in FIG. A wall material 28 is erected on the front of the wall. In order to attach the wiring device 29 to the wiring box 11, first, a cutting tool (not shown) such as a saw is moved along the inner peripheral surface of the box body 13 to form the same shape as the opening of the box body 13. An instrument installation hole 30 is formed in the wall material 28. When the cutting tool is moved toward the corner along the inner side surface of the left side wall 12c, the opening width in the vertical direction of the space S2 is shorter than the width of the cutting tool blade, so that the cutting tool blade The tip immediately contacts the inner surface of the upper pipe connection wall 12a or the lower pipe connection wall 12b. Therefore, at the position where the bulging portion 19 is formed, the blade portion of the cutting tool does not enter the space portion S2, and is moved along the extension line of the inner side surface of the central portion of the left side wall 12c. As a result, the instrument installation hole 30 is formed in the same shape as the opening of the wiring box 11 in which the bulging portion 19 is not formed, and the opening width becomes 55 mm.

  Then, the cable is pulled out from the device installation hole 30 to the front side of the wall material 28, and the cable is connected to the wiring device 29. Furthermore, the wiring frame 29 is held by the holding frame 31, and the holding frame 31 is attached to the front side of the wiring box 11. Finally, as shown by a two-dot chain line in FIG. 6, when the decorative plate 32 is attached to the surface of the wall material 28 so as to cover the device installation hole 30, the outer periphery of the wiring device 29 is covered with the decorative plate 32. Is installed on the wall material 28. At this time, the instrument installation hole 30 is formed so as to have an opening width of 55 mm of the box body 13. In addition, when the side surface of the pillar 16 is slanted or the wiring box 11 is obliquely attached to the pillar 16 and the box body 13 is obliquely installed, the instrument installation hole 30 is obliquely drilled. Even if installed, the entire instrument installation hole 30 is covered with the decorative plate 32 having a width of 70 mm.

  Next, as shown in FIG. 7, a case where the small diameter conduit 33 is connected to the wiring box 11 using the engagement plate 24 will be described. Unlike the case where the large-diameter conduit 10 is connected to the wiring box 11, the engagement plate 24 is used. That is, the conduit engaging portion 24a of the engaging plate 24 and the engaging protrusion 22 opposite to the conduit engaging portion 24a are engaged with the concave portion of the small diameter conduit 33, so that the three small diameter wires are connected. The tube 33 is connected to the wiring box 11 in a state where the tubes 33 are arranged. As a result, the three small-diameter conduits 33 are connected in a state of being accommodated inside the width of the wiring box 11. Also at this time, the lower end portions of the three small-diameter electric pipes 33 are accommodated in the box main body 13 by using the portion forming the bulging portion 19 in the upper tube connecting wall 12a and further using the space portion S2. It becomes possible to connect to the wiring box 11 in a state.

According to the wiring box 11 of the above embodiment, the following effects can be obtained.
(1) The bulging part 19 was formed in the upper and lower corner parts of the left side of the box main body 13, and the left end part of the upper side pipe connection wall 12a and the lower side pipe connection wall 12b was each extended leftward. And in the upper side pipe connection wall 12a and the lower side pipe connection wall 12b, by using the extended part, a pair of large-diameter electric pipes 10 or three pieces can be used effectively by using the upper side pipe connection wall 12a. The small diameter conduit 33 can be connected to the wiring box 11. Then, only the upper and lower portions on the left side of the box body 13 are projected, and the size of the wiring box 11 is substantially the same size as the wiring box capable of connecting two conduits in the background art. Therefore, the bulging portion 19 and the upper pipe connection wall 12a do not increase the size of the entire outline of the wiring box 11, and the upper pipe connection wall 12a is effectively used to make a pair of large diameter conduits 10 or three small diameters. The conduit 33 can be connected to the wiring box 11.

  (2) A wiring box capable of connecting two conduits in the background art and an instrument installation hole 30 having the same shape as the opening of the box body 13 having the same size are formed in the wall material 28. Therefore, it is not necessary to use a large decorative plate to cover the instrument installation hole that is drilled when a large wiring box is used. As a result, it is possible to prevent an increase in the cost of wiring equipment installation work due to the use of the large decorative plate, and it is also possible to prevent a decrease in the appearance of the wall surface due to the large decorative plate.

  (3) The bulging part 19 was formed in the upper-lower left part of the box main body 13, and the space part S2 in the bulging part 19 and the internal space S1 in the box main body 13 were connected. And by accommodating a part of edge part of the large diameter conduit tube 10 or the small diameter conduit tube 33 in space part S2, a lower end part of a pair of large diameter conduit tube 10 or the three small diameter conduit tubes 33 is made into a box main body. 13 can be connected to the wiring box 11. And since the lower end part of the large diameter conduit 10 or the small diameter conduit 33 enters into the box main body 13 by the fixed length along those axial directions, the large diameter conduit 10 or the small diameter conduit 33 is connected to the wiring box. 11 can be prevented from easily coming out. Moreover, since the lower end of the large diameter conduit 10 or the small diameter conduit 33 disposed in the space S2 contacts the inner bottom surface of the left side wall 12c forming the bulging portion 19, the large diameter conduit 10 or the small diameter It is possible to prevent the conduit 33 from entering the box body 13 more than necessary.

  (4) The bulging portion 19 is formed only at the left and upper corner portions of the box body 13. Therefore, unlike the case where the wiring device 29 is installed using a large-sized wiring box in which the entire outline of the box body 13 is enlarged, the wiring device 29 can be installed using the wiring box 11 even if the installation space of the wiring box 11 is small. It can be installed on the wall material 28.

  (5) Of the inner side surface of the box main body 13, only the left and upper left and right portions are recessed so as to be the space portion S2. Then, when the cutting tool is moved along the inner surface of the box body 13 in order to make the instrument installation hole 30 in the wall material 28, it is only necessary to pay attention to the movement of the cutting tool only at the site corresponding to the space S2. Since the width of the space portion S2 is narrow, the wall material 28 can be cut without allowing a cutting tool to enter the space portion S2. Therefore, the malfunction that the instrument installation hole 30 is expanded can be prevented.

  (6) The connection long hole 20 is formed in the upper side pipe connection wall 12a and the lower side pipe connection wall 12b so that it may extend in those length directions. Therefore, unlike the case where a circular hole for connecting the large diameter electric pipe 10 or the small diameter electric pipe 33 is formed in the upper pipe connecting wall 12a and the lower pipe connecting wall 12b, the large diameter electric pipe 10 or the small diameter electric pipe. It is possible to adjust the position of 33 along the connection long hole 20. Therefore, the large diameter conduit 10 or the small diameter conduit 33 can be moved along the connection long hole 20, and the end of the large diameter conduit 10 or the small diameter conduit 33 can surely enter the space S2.

  (7) The bulging portion 19 is formed only on the left side of the box body 13 in which the contact seat portion 14 is formed. Therefore, when the abutment seat 14 is brought into contact with the side surface of the column 16 and the box body 13 is fixed to the column 16, the bulging portion 19 contacts the side surface of the column 16. Therefore, when the wiring box 11 is fixed to the column 16, the upper and lower end portions of the box body 13 are prevented from tilting toward the column 16, and the operation of fixing the wiring box 11 to the column 16 can be performed easily and quickly. it can.

  (8) The bulging portions 19 are extended on both the upper and lower sides of the contact seat portion 14. Therefore, by forming the bulging portion 19, the pair of large diameter conduits 10 or small diameter conduits 33 can be connected without extending the maximum length of the wiring box 11 in the left-right direction. Further, a bulging portion 19 is disposed in a space formed between the outer surface of the left side wall 12 c where the contact seat portion 14 is formed and the side surface of the column 16. Therefore, the space formed when the box body 13 is fixed to the column 16 is effectively used, and the upper pipe connection wall 12a can be effectively used without extending the maximum length of the box body 13 in the left-right direction. be able to.

In addition, this embodiment can also be changed and embodied as follows.
In the embodiment, the two large-diameter electric pipes 10 are connected to the upper pipe connecting wall 12a of the wiring box 11. However, an adapter having the same outer diameter as the large-diameter electric pipe 10 is connected to the upper pipe connecting wall 12a. Two large-diameter conduits 10 may be connected to each adapter.

In the embodiment, two large-diameter conduits 10 are connected to the connection long hole 20, but one large-diameter conduit 10 may be connected to the connection long hole 20.
In the embodiment, the pipe connection walls 12a and 12b are provided above and below the box body 13. However, only one of the upper and lower sides of the box body 13 is used as a pipe connection wall, and the pipe connection wall, the left side wall 12c, and the right side wall 12d. The bulging part 19 may be formed in a corner part connected to at least one of the above.

  In the embodiment, the pipe connection walls 12a and 12b are provided above and below the box body 13. However, only one of the upper and lower sides of the box body 13 is used as a pipe connection wall, and the pipe connection wall, the left side wall 12c, and the right side wall 12d. The bulging portion 19 may be formed at a corner portion where the and are connected. At this time, the bulging portion 19 formed on the right side of the box body 13 has the same configuration as the bulging portion 19 of the embodiment.

  In the embodiment, the opening width in the vertical direction of the space portion S2 is shorter than the width of the blade portion of the cutting tool. However, the opening width in the vertical direction of the space portion S2 is the same as the width of the blade portion of the cutting tool. You may form in.

  In the embodiment, the connection long hole 20 as the connection portion is formed in the upper pipe connection wall 12a and the lower pipe connection wall 12b. However, instead of the connection long hole 20, a large-diameter conduit tube 10 or an adapter can be connected. One or two or more holes may be formed as a connection portion. At this time, the hole is formed in the upper pipe connection wall 12a and the lower pipe connection wall 12b so as to be positioned above the space S2. When configured in this way, holes are formed in the upper tube connection wall 12a and the lower tube connection wall 12b as compared with the case where the hole is formed in the tube connection wall of the wiring box to which two conduits can be connected. The area of the site | part which is not formed becomes large. As a result, in the upper pipe connection wall 12a and the lower pipe connection wall 12b, it is possible to sufficiently secure the interval between the holes, and it is possible to increase the strength by effectively using the portion where the bulging portion 19 is formed. . In particular, one or more holes that allow connection of the small-diameter electric pipe 33 may be formed in the upper pipe connection wall 12a and the lower pipe connection wall 12b as connection parts.

  In the embodiment, the connection long hole 20 as the connection portion is formed in the upper tube connection wall 12a and the lower tube connection wall 12b so as to extend in the length direction of each of the tube connection walls 12a and 12b. It may be changed. For example, in the upper pipe connection wall 12a and the lower pipe connection wall 12b, a connection hole extending in the width direction of each pipe connection wall 12a, 12b from the opening side edge of the box body 13 or the bottom wall 12 side edge is used as a connection portion. It may be formed. Then, an insertion opening is formed on the opening side or the bottom wall 12 side of the box body 13, and the large-diameter conduit 10 or the small-diameter conduit 33 is inserted into the connection hole from the insertion opening, and the large-diameter wire is inserted into the wiring box 11. The tube 10 or the small diameter electric conduit 33 may be connected.

In the embodiment, the engagement plate 24 as the conduit connection portion is formed on the upper tube connection wall 12a and the lower tube connection wall 12b, but the engagement plate 24 may be omitted.
In the embodiment, the present invention is embodied in the wiring box 11, but the present invention may be embodied in a wiring device mounting frame. This wiring device mounting frame includes a frame main body formed in a square frame shape, and at least one of an upper wall and a lower wall facing each other up and down of the frame main body is connected to a conduit tube or an adapter. It is formed as a wall. Moreover, the left side wall and the right side wall which are opposite to each other are formed on the left and right sides of the frame body. Further, at least one corner portion of the frame body has the pipe connection wall extending outward from the frame body, and a part of the side wall forming the corner portion bulges outward. The bulging part formed by this is provided. And the conduit or adapter connected to the tube connecting wall is connected so that a part of the radial direction is arranged in the bulging portion and the whole or part of the inside faces the inside of the frame main body. It is made possible. When comprised in this way, a pipe | tube connection wall can be utilized effectively, without enlarging the whole outline using the side edge part of a pipe | tube connection wall.

  As shown in FIG. 8, the front surface of the space in the bulging portion 19 may be covered with a closing portion 34. At this time, the closing portion 34 is provided such that the end edge of the closing portion 34 is positioned on the extension line of the inner side surface in the central portion of the left side wall 12c. When comprised in this way, a cutting tool can be moved along opening of the box main body 13 by the inner surface of each wall and the closing part 34, and the instrument installation hole 30 same shape as opening of the box main body 13 is made into the wall material 28. Can be easily drilled. That is, the closing part 34 can reliably prevent the cutting tool from entering the space in the bulging part 19.

In the embodiment, the protruding length of the bulging portion 19 is the same as the protruding length of the abutting seat portion 14, but the protruding length of the bulging portion 19 is longer than the protruding length of the abutting seat portion 14 outward. The length may be shortened.
In the embodiment, the bulging portion 19 is formed on the left side wall 12c provided with the contact seat portion 14, but the bulging portion 19 may be formed on the right side wall 12d where the contact seat portion 14 is not provided. Good.

In the embodiment, the contact seat 14 is provided on the left side wall 12c, but the contact seat 14 may be omitted. Alternatively, the abutment seat portion 14 may be formed on both side walls of the left side wall 12c and the right side wall 12d.
The upper and lower end portions of the left side wall 12c and the right side wall 12d connected to the upper side pipe connection wall 12a and the lower side pipe connection wall 12b are bulged outwardly, and It may be provided.

In the embodiment, the large-diameter conduit 10 is formed in an uneven shape, but a large-diameter conduit 10 having a cylindrical shape and a smooth outer surface may be used.
-In embodiment, although the wiring box 11 was fixed to the pillar 16 as a structure, you may fix the wiring box 11 to the H-shaped steel, steel frame, wall material, etc. as a structure.

  In the embodiment, a contact seat that protrudes in the vertical direction of the box body 13 is formed at the left end of the upper tube connection wall 12a and the lower tube connection wall 12b, and a fixing hole 15 is formed in the contact seat. May be.

  In the embodiment, the depth of the bulging portion 19 is set so that a part of the inside of the large-diameter conduit 10 enters the space S2, but the depth of the bulging portion 19 is made shorter than that of the embodiment. May be. For example, the thickness of the tube wall of the large diameter conduit 10 and the length of the inner surface of the left side wall 12c extending to the left are made the same, and the end portion of the large diameter conduit 10 is accommodated in the space S2 of the bulging portion 19. In this state, the entire inside of the large-diameter conduit tube 10 may face the space portion S2.

  -In embodiment, although space part S2 was formed inside each bulging part 19, you may change as follows. As shown in FIG. 9, with the upper pipe connection wall 12a extended, the left side wall 12c is formed so as to extend from the left edge of the upper pipe connection wall 12a along the lower surface. The space portion S2 may not be formed in the space.

Further, the technical idea that can be grasped from the embodiment will be described below.
(1) The pipe connecting wall is provided with a connecting portion for connecting a large diameter electric pipe or a small diameter electric pipe smaller in diameter than the large diameter electric pipe. The wiring box as described in any one of. When comprised in this way, two types of electric conduits with which dimensions differ, such as a large diameter conduit tube and a small diameter conduit tube, can be connected to a tube connection wall.

  (2) The connecting portion for connecting the large-diameter conduit tube to the pipe connection wall is formed by a connection long hole, and the length direction of the connection long hole extends along the length direction of the pipe connection wall. The wiring box according to the technical idea (1), wherein the wiring box is formed so as to reach a protruding portion. When configured in this manner, the position of the large-diameter conduit tube on the tube connection wall can be adjusted, unlike the case where a circular hole for connecting the large-diameter conduit tube is formed in the tube connection wall. Therefore, the large-diameter conduit can be moved and the end of the large-diameter conduit can be reliably arranged in the bulging portion.

  (3) At the position where the space portion and the internal space communicate with each other, the opening width in the vertical direction of the space portion cuts the wall material standing on the front surface of the box body into the same shape as the opening of the box body. The wiring box according to any one of claims 1 to 4, wherein the wiring box is formed shorter than a width of a blade portion of the cutting tool. When comprised in this way, when moving a cutting tool to the corner part side along the inner surface of a box main body, the front-end | tip of the blade part of a cutting tool will contact | abut rapidly to the inner surface of a pipe connection wall. Therefore, at the position where the bulging portion is formed, the blade portion of the cutting tool does not enter the bulging portion and is moved along the extension line of the inner surface of the side wall. Therefore, an opening having the same shape as the opening of the box main body can be formed in the wall material, and the occurrence of problems such as the opening being enlarged or being formed obliquely can be prevented.

  (4) The pipe connection wall can be connected to three conduits each having a nominal size of 16 mm standardized by JISC8411, according to any one of claims 1 to 4. Wiring box. When comprised in this way, the electric wire tube or adapter which can be connected to a tube connection wall can be increased, without enlarging the whole box main body.

  (5) It is possible to connect two conduits with a nominal 22 mm standardized by JISC8411 to the pipe connection wall. Wiring box. When comprised in this way, the diameter of the electric wire pipe connectable to a pipe connection wall can be enlarged, without enlarging the whole box main body.

  (6) A wiring box including a box body formed in a bottomed box shape having an opening on the front surface, wherein at least one of an upper wall and a lower wall facing each other above and below the box body is a conduit or an adapter Are formed as pipe connection walls that can be connected to each other, and opposite side walls are formed on the left and right sides of the box body, and at least one corner portion of the box body has the pipe connection wall connected to the box body. And a bulge portion formed by extending a part of the side wall forming the corner portion bulges outward and connected to the tube connection wall. Alternatively, the adapter is formed to be connectable so that a part of the adapter in the radial direction is disposed in the bulging part, and the whole or part of the adapter faces the inside of the box body, and the bulging part is formed. The The walls, when securing the box body on the building structure, wiring box abutting seat abutting the same structure is characterized in that it is projected outward. In this case, when the box body is fixed by bringing the contact seat into contact with the structure, a space formed between the outer surface of the side wall on which the contact seat is formed and the side surface of the structure. The bulging portion is provided at the top. Therefore, it is possible to effectively use the space formed when the box body is fixed to the structure, and to effectively use the pipe connection wall without extending the maximum length in the left-right direction of the box body. .

The perspective view which shows the wiring box of embodiment. (A) is a top view which shows the wiring box of embodiment, (b) is the bb sectional view taken on the line bb of FIG. 2 (a) which shows the connection long hole of a wiring box. The side view which shows a wiring box. The front view which shows the state by which the large diameter conduit tube was connected to the wiring box. The top view which shows the state by which a pair of large diameter conduit tube was connected to the wiring box. The front view which shows the wiring box of wall material back. The top view which shows the state which connected the three small diameter conduits to the wiring box. The front view which shows the wiring box of another example. The partial front view which shows the wiring box of another example.

Explanation of symbols

  S1 ... Internal space, S2 ... Space part, 10 ... Large-diameter conduit tube, 11 ... Wiring box, 12a ... Upper pipe connection wall as a pipe connection wall, 12b ... Lower pipe connection wall as a pipe connection wall, 12c ... Side wall Left side wall, 12d ... right side wall as side wall, 13 ... box body, 14 ... abutment seat part, 16 ... pillar as structure, 19 ... bulge part, 33 ... small diameter conduit, 34 ... closing part.

Claims (4)

A wiring box having a box body formed in a square box shape with a bottom having an opening on the front surface,
At least one of the upper wall and the lower wall facing each other in the vertical direction of the box body is formed as a tube connection wall to which a conduit tube or an adapter can be connected, and opposite side walls are provided on the left and right sides of the box body. Formed,
At least one corner portion of the box body has the pipe connection wall extending outward of the box body, and a part of the side wall forming the corner portion bulges outward. A formed bulge is provided,
A long connecting hole is formed in the pipe connecting wall along its length direction, and one end edge of the long connecting hole extends until it reaches the inner surface of one side wall forming the bulging portion. Established,
The conduit tube or adapter connected to the tube connection wall is arranged such that a part of its radial direction is disposed in the bulging portion, and all or part of the inside faces the inside of the box body. A wiring box characterized by being formed so as to be connectable to. Inside the bulging part, a space part is formed which communicates with the internal space of the box body and allows a part of the conduit pipe or adapter connected to the pipe connecting wall in the axial direction to enter. The wiring box according to claim 1. An insertion opening is formed at one of the upper and lower ends of the opposite side walls so that a conduit or adapter can be inserted through the one side wall, and the insertion opening communicates with the other end edge of the connection slot. The wiring box according to claim 1, wherein the wiring box is formed so as to do so. A wiring box having a box body formed in a square box shape with a bottom having an opening on the front surface,
The upper and lower walls facing the top and bottom of the box body are formed as pipe connection walls to which a conduit or adapter can be connected, and opposite side walls are formed on the left and right of the box body,
When the box body is fixed to the building structure, one of the opposing side walls is provided with an abutment seat that abuts against the structure and protrudes outward. In the corner portion of the box body on the side wall side, the pipe connection wall extends outward from the box body, and the abutment seat portion that forms the corner portion projects from the side wall. A bulging part formed by the part bulging outward is provided,
The inner side surface of the bulging portion is located outside the outer side surface of the side wall on which the contact seat portion protrudes,
The conduit tube or adapter connected to the tube connection wall is arranged such that a part of its radial direction is disposed in the bulging portion, and all or part of the inside faces the inside of the box body. A wiring box characterized by being formed so as to be connectable to.

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