Wiring device fixing body

Abstract

To provide a wiring device fixing body that can secure ample space for accommodating excess lengths of wiring devices and cables housed within the accommodation space, and where the connection portion of the conduit, when fixing the side wall provided with the connection portion against a structure, does not hinder the fixing.SOLUTION: A side wall 11 is provided with a fixing portion 19 for securing to a column 60 with screws, a contact portion 21 protruding from the side wall 11 and capable of contacting the column 60, a connection portion 23 to which a conduit 40 is connected. The connection portion 23 includes a through hole 24 into which a tip portion 44 of the conduit 40 is inserted, an insertion port 26 formed in a circumferential portion of the through hole 24, allowing the conduit 40 to be radially moved and positioned within the through hole 24, and a protruding portion 27 extending outward from the outer surface of the side wall 11 adjacent to the through hole 24. An engagement portion 28 is provided on the side of the protruding portion 27 facing the through hole 24, which engages with a recess 43 on the outer surface of the conduit 40 positioned within the through hole 24.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wiring apparatus fixture having a connection portion to which a conduit is connected and to which a wiring apparatus is fixed. [Background technology]

[0002] When installing wiring devices such as switches and outlets on an interior wall, a wiring device fixture consisting of a box shaped like a square box is attached to the back of the wall, and after connecting a conduit to the box, the cable wired behind the wall is pulled into the box body through the conduit and connected to the wiring device. Patent Document 1, for example, discloses an example of a wiring device fixture box of this type, in which a connection hole formed in the side wall of the box body has an inner surface provided with an engaging protrusion that engages with a recessed portion on the outer surface of the conduit, allowing the conduit to be connected. Patent Document 2 also discloses a wiring device fixture in which a tubular conduit connection portion to which the conduit is connected is formed to protrude from the side wall of the box body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-051990 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-296071 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the box body described in Patent Document 1, the conduit is connected so that it penetrates the inside and outside of the side wall, and the tip of the conduit protrudes into the box body, and the protruding end of the conduit occupies part of the internal space of the box body. As a result, the space inside the box body for accommodating excess cable length and the end of the conduit may interfere with wiring devices housed in the internal space.

[0005] On the other hand, the box body described in Patent Document 2 can connect the end of the electric conduit without protruding beyond the inner surface of the side wall into the box body, so it does not narrow the space inside the box body. However, because the cylindrical electric conduit connection portion protrudes significantly from the outer surface of the side wall, even if an attempt is made to fix the outer surface of the side wall of the box body by abutting it against a structure such as a furring strip of a building, the electric conduit connection portion gets in the way and prevents the fixation, which limits the installation orientation of the box body.

[0006] Therefore, an object of the present invention is to provide a wiring device fixture that can secure a large storage space for the excess length of wiring devices and cables stored in the storage space, and that does not cause the connection parts to interfere with the fixation when the side wall on which the connection parts of the electrical conduit are provided is placed against a structure and fixed. [Means for solving the problem]

[0007] The wiring apparatus fixing body of claim 1 comprises a peripheral wall having four side walls forming a rectangular frame shape, and an apparatus attachment portion capable of fixing a wiring apparatus, and a storage space for storing the wiring apparatus is formed inside the peripheral wall, An opening through which the wiring device can be inserted into the storage space is formed on the inside surrounded by the front end sides of the four side walls, At least one of the four side walls has: a fixing portion through which a fastener passes, the fastener being driven in to fix the side wall of the first structure to the structure while the side wall of the first structure faces the structure; a contact portion that protrudes from the side wall of the first fixing member, has a contact surface at a tip end thereof that contacts the structure, and can contact the structure at a plurality of different positions when the fixing body is driven in; a connection portion to which the electrical conduit is connected, The connection portion is a through hole into which the tip of the electrical conduit to be connected is inserted; an introduction port formed in a part of the circumferential direction of the through hole, the introduction port being capable of disposing a tip end portion of the electric conduit in the through hole by moving the electric conduit in a radial direction; a protrusion adjacent to the through hole and protruding outward from the outer surface of the side wall in a range from the outer surface of the side wall to the abutment surface of the abutment portion, An engaging portion is provided at a position outside the outer surface of the side wall on the side of the protrusion facing the through hole, which engages with a recess on the outer surface of the electrical conduit placed within the through hole. With this, only the tip of the conduit fits into the through-hole of the connection part, and the inlet of the connection part can be positioned within the through-hole by moving the conduit radially, so the end of the conduit does not protrude into the accommodation space, thereby ensuring a large space in the accommodation space to accommodate wiring devices and excess cable length. Furthermore, the side wall on which the connection portion of the electric conduit is provided has a contact portion that protrudes from this and can abut against a structure, and the protrusion with an engagement portion on the side protrudes outward from the outer surface of the side wall in the range from the outer surface of the side wall to the abutment surface of the abutment portion, so that when this side wall is used to attach and fix the wiring apparatus fixture to a structure, the connection portion does not interfere with the fixation.

[0008] The wiring device fixing body of claim 2 particularly includes a restricting portion that faces the inlet and abuts against the tip of the electrical conduit arranged in the through hole to restrict the tip of the electrical conduit from protruding beyond the inner surface of the side wall 1 toward the accommodating space. This reliably prevents the conduit from protruding into the receiving space after connection.

[0009] The wiring apparatus fixing body of claim 3 is characterized in that the conduit is a corrugated pipe having convex portions and concave portions alternately and continuously formed on the outer surface in the longitudinal direction, The restricting portion can position only one of the protrusions at the tip end of the conduit in the inlet, The engaging portion is provided at a position where it engages with a recess adjacent to one of the protrusions at the tip end of the electrical conduit when the protrusion is placed in the through hole. As a result, the engaging portion is provided at a height close to the outer surface of the side wall, so that the protruding length of the protruding portion from which the engaging portion is protruded from the outer surface of the side wall can be reduced, thereby preventing the entire wiring device fixing body from becoming larger.

[0010] In the wiring apparatus fixture of claim 4, the connection portion is disposed rearwardly and spaced apart from the front end of the side wall of the first side wall, The fixing portion has a long hole extending in the front-rear direction, the front end of which is located closer to the opening than the connecting portion. This means that even if the wiring device fixing body is fixed to a structure that fits within the width between the opening and the connection part, such as a furring strip, it is possible to connect the electrical conduit to the connection part of the side wall that is fixed in contact with the structure.

[0011] In the wiring apparatus fixing body of claim 5, the abutting portion particularly includes an opening-side abutting portion extending along a front end portion of an outer surface of the side wall of the first side, and a front-rear abutting portion extending from the front to the rear, The front and rear contact portions are provided on both sides of the fixed portion. According to this, the abutment surface of the opening-side abutment portion extends along the front end of the outer surface of side wall 1, and the abutment surfaces of the front and rear abutment portions extend from the front to the rear, so that these extending surfaces allow the wiring device fixing body to stably abut and be fixed to the structure.

[0012] In the wiring apparatus fixing body of claim 6, in particular, the expansion space communicating with the through hole across the introduction port is provided adjacent to the restricting portion. According to this, the cable introduction port is expanded by the expansion space communicating with the through hole, so that when the cable is introduced directly into the accommodation space without using a conduit, it is easy to introduce the cable.

[0013] In the wiring apparatus fixture of claim 7, the expansion space is particularly closed by a removable closing portion, and the surface of the closing portion facing the introduction port is located on the same plane as the restricting portion. This allows the conduit to be moved radially from the inlet without getting caught on the surface of the closed portion of the expansion space facing the inlet. [Effects of the Invention]

[0014] In the present invention, only the tip of the conduit enters the through-hole of the connection part, and the inlet of the connection part can be positioned within the through-hole by moving the conduit radially, so that after connection, the end of the conduit does not protrude into the housing space. This allows for a large storage space in the housing space for excess cable and wiring devices, and prevents the end of the conduit from interfering with the wiring devices housed in the internal space.

[0015] Furthermore, the side wall on which the connection portion of the electric conduit is provided has abutment portions that protrude from the outer surface and can abut against a structure at a plurality of different positions. Therefore, when this side wall is placed against a structure, the connection portion does not interfere with the structure, and the wiring device fixture can be fixed to the structure without any problems using the side wall on which the connection portion is provided. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a perspective view showing a wiring apparatus fixing body and peripheral members according to an embodiment of the present invention. [Figure 2] 2A and 2B show the wiring apparatus fixing body of FIG. 1, in which FIG. 2A is a perspective view seen from the opening side, and FIG. 2B is a perspective view seen from the bottom wall side. [Figure 3] 2A and 2B show the wiring apparatus fixing body of FIG. 1, in which (a) is a front view, (b) is a cross-sectional view taken along the AA line in (a), and (c) is a cross-sectional view taken along the BB line in (a). [Figure 4] 3A and 3B show a state in which the wiring apparatus fixture of FIG. 2 is fixed to a pillar and a conduit is connected, in which FIG. 3A is a plan view and FIG. 3B is a front view. [Figure 5] 4(b) is a cross-sectional view taken along the line CC in FIG. 4(b), and FIG. 4(b) is a cross-sectional view taken along the line DD in FIG. [Figure 6] 6 is a cross-sectional view showing a state in which a wiring device is fixed to the wiring device fixture of FIG. 5. FIG. [Figure 7] 3 is a perspective view showing a state in which the wiring apparatus fixing body of FIG. 2 is fixed to a furring strip and a conduit is connected. FIG. [Figure 8] 8A to 8C show the fixed and connected state of FIG. 7, with (a) being a plan view, (b) being a front view, and (c) being a cross-sectional view taken along the EE line of (b). DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, a wiring apparatus fixing body according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the up-down direction and the left-right direction refer to the up-down direction and the left-right direction in Fig. 1, respectively, and the front and the rear refer to the front side and the back side in Fig. 1, respectively.

[0018] 1 to 3, the wiring apparatus fixture 1 includes a peripheral wall 10 having four side walls 11 forming a horizontally elongated rectangular frame, and an accommodation space 14 for accommodating a wiring apparatus 50 is formed inside the peripheral wall 10. An opening 15 through which a part of the wiring apparatus 50 can be inserted into the accommodation space 14 is formed inside the space surrounded by the front ends 12 of the four side walls 11, and a bottom wall 16 is formed at the rear end of the peripheral wall 10 opposite the opening 15.

[0019] A pair of device attachment portions 17 capable of fixing wiring devices 50 are provided near the midpoints of the left and right sides of bottom wall 16, along left side wall 11c and right side wall 11d, respectively, and stand vertically toward opening 15. Device attachment portions 17 are generally semi-cylindrical or semi-circular tubular, and are formed at a height such that their tips do not protrude from opening 15. Each tip is formed with a screw hole 17a into which a screw can be attached from the front of opening 15.

[0020] Furthermore, a detectable portion 18 is provided in the center of the bottom wall 16, standing vertically toward the opening 15. The detectable portion 18 is tubular, and its tip is formed at a height so that it does not protrude from the opening 15, with a magnet 18a embedded in the tip. After a wall material 70 is erected in front of the wiring apparatus fixed body 1, the position of the wiring apparatus fixed body 1 on the back side of the wall can be detected by magnetically detecting the detectable portion 18 using a magnetic detector from the front side of the wall.

[0021] The four side walls 11 have abutment portions 21 that can abut against a structure, and are provided with fixing portions 19 through which fasteners such as nails or screws 80 can be driven to fix the wall to the structure while facing the structure. The fixing portions 19 are provided at both ends of each side wall 11, face the interior of the storage space 14, and can be fixed to the structure by driving a fastener through the opening 15.

[0022] The contact portions 21 of the upper side wall 11a and the lower side wall 11b of the four side walls 11 protrude outward from the outer surface 13 of the side wall 11 and have contact surfaces 22 at their tip ends that contact the structure. The contact portions 21 also include an opening-side contact portion 21a that extends along the front end 12 of the outer surface 13 of the side wall 11, and front-rear contact portions 21b that extend from the front to the rear of both end sides of the side wall 11, i.e., toward the bottom wall 16, allowing the contact portions 21 to contact the structure at a plurality of different positions when the fastener is driven in. The front-rear contact portions 21b are provided on both sides of the fixing portion 19. The fixing portions 19 of the upper side wall 11a and the lower side wall 11b have elongated holes 20 that extend in the front-rear direction and whose front ends are located closer to the opening 15 than the connecting portion 23.

[0023] Furthermore, the upper side wall 11a and the lower side wall 11b are provided with connection portions 23 to which the electrical conduit 40 is connected. The connection portions 23 are provided in two locations on each of the upper side wall 11a and the lower side wall 11b, and are arranged rearward from the front end 12 on each side wall 11. The electrical conduit 40 is made of a corrugated tube having convex portions 42 and concave portions 43 formed alternately and continuously on the outer surface 41 in the longitudinal direction.

[0024] Each connection portion 23 has a through hole 24 into which the tip portion 44 of the electrical conduit 40 to be connected is inserted. The through hole 24 is formed in a substantially U-shape that opens toward the bottom wall 16, and includes a large-diameter through hole 24a to which the large-diameter electrical conduit 40a is connected and a small-diameter through hole 24b to which the small-diameter electrical conduit 40b is connected. The small-diameter through hole 24b has a peripheral edge that protrudes inward a certain distance from the peripheral edge of the large-diameter through hole 24a, and the large-diameter through hole 24a is formed by breaking off a break-off portion 25 that is thin-walled and formed in a substantially U-shape on the outer periphery of the small-diameter through hole 24b along the small-diameter through hole 24b.

[0025] In a straight portion along the surface of the bottom wall 16 on the opposite side of the arc portion, which is a circumferential portion of the through hole 24, an inlet 26 is provided, as shown in Figures 2(b) and 3(c), which allows the tip 44 of the electrical conduit 40 to be positioned within the through hole 24 by moving the electrical conduit 40 radially, i.e., horizontally in Figure 3(c).

[0026] A protrusion 27 is provided at an adjacent position along the through hole 24, protruding outward within a height range from the outer surface 13 of the side wall 11 to the abutting surface 22 of the abutting portion 21. An engagement portion 28 that engages with a recess 43 on the outer surface 41 of the electrical conduit 40 placed in the through hole 24 is provided along the periphery of the through hole 24 at a position on a side 27a of the protrusion 27 facing the through hole 24 that is outside the outer surface 13 of the side wall 11. The engagement portion 28 is provided at a position that engages with the recess 43 adjacent to the protrusion 42 on the tip end 44 of the electrical conduit 40 when the protrusion 42 is placed in the through hole 24. A hook-shaped anti-pullout projection 29 that protrudes in the axial direction of the tube is provided at the end of the engagement portion 28 on the inlet 26 side.

[0027] A restricting portion 30 is formed on the edge of the bottom wall 16 at the connection portion 23, facing the inlet 26, and abuts against the tip of the electrical conduit 40 placed into the through hole 24 to restrict the tip 44 of the electrical conduit 40 from protruding beyond the inner surface of the side wall 11 toward the accommodation space 14. The restricting portion 30 is formed at a position facing both the left and right ends of the inlet 26, and allows only one protrusion 42 of the tip 44 of the electrical conduit 40 to be placed in the inlet 26.

[0028] An expansion space 31 is provided at the edge of the bottom wall 16, adjacent to the restricting portion 30, and communicates with the through-hole 24 across the inlet 26. The expansion space 31 is formed with a width smaller than the inlet 26 and is formed midway between the left and right restricting portions 30. The expansion space 31 is closed by a removable closing portion 32, and by removing the closing portion 32, the cable 54 can be introduced into the storage space 14 without using the electrical conduit 40. A surface 32a of the closing portion 32 facing the inlet 26 is located on the same plane as the restricting portion 30.

[0029] Next, a method for fixing the wiring apparatus fixture 1 of this embodiment configured as described above to a structure, connecting the conduit 40, and fixing the wiring apparatus 50 will be described. First, a case where the wiring apparatus fixed body 1 is fixed to a pillar 60 of a building, which is a structure, will be described. To do this, as shown in Figures 4 and 5, the entire left side wall 11c is brought into contact with the pillar 60 while facing it, and screws 80, which are fasteners, are driven into the fixing portions 19 consisting of the elongated holes 20 to fix the body. Note that the right side wall 11d can also be fixed by cutting off the removable protrusion 11e provided on the edge on the opening 15 side, so that the entire body can be brought into contact with the pillar 60 and fixed.

[0030] After the wiring apparatus fixture 1 is fixed to the pole 60, the conduit 40 is connected to the connection portion 23. To connect, the conduit 40 is inserted into the inlet 26 by moving it radially, i.e., horizontally in FIG. 3(c), as shown in FIG. 3(c), and is positioned within the through-hole 24 of the connection portion 23. At this time, since the edge of the bottom wall 16 is provided with a restricting portion 30 that abuts against the tip of the conduit 40, only one protrusion 42 of the tip portion 44 of the conduit 40 is positioned in the inlet 26.

[0031] After placement, the engaging portion 28 engages with a recess 43 adjacent to one of the protrusions 42 at the tip 44 of the conduit 40. The state after engagement is shown in Figure 5. After engagement, the conduit 40 is restricted from moving in the axial direction. Furthermore, after placement, the protrusion 42 of the conduit 40 engages with a retaining projection 29 provided at the end of the engaging portion 28 on the inlet 26 side, preventing the conduit 40 from moving radially and coming out of the through-hole 24.

[0032] After connecting the conduit 40, as shown in FIGS. 1 and 6 , the cable 54 is inserted therethrough and the end is pulled into the housing space 14 of the wiring apparatus fixture 1, and a wall material 70 is erected in front of the opening 15 of the wiring apparatus fixture 1. Then, a magnetic detector is used from in front of the wall surface 71 to magnetically detect the magnet 18a of the detection target 18 erected on the bottom wall 16 of the wiring apparatus fixture 1, thereby detecting the position of the wiring apparatus fixture 1 and forming a wall hole 72. Next, the end of the cable 54 in the housing space 14 of the wiring apparatus fixture 1 is pulled out through the wall hole 72 to the wall surface and connected to a terminal of the wiring apparatus 50. After connecting the cable 54, a portion of the wiring apparatus 50 is inserted into the wall hole 72, and the end of the cable 54 is pulled back into the housing space 14, and the excess length 55 of the cable 54 is housed. Then, screws 81 are inserted into the elongated mounting holes 52 at both left and right ends of the horizontally elongated rectangular device mounting frame 51 to which the wiring device 50 is attached, and the wiring device 50 is attached to the device mounting portion 17 of the wiring device fixture 1. After that, although not shown, decorative plates are attached by fastening screws to the female threads 53 at both left and right end edges of the device mounting frame 51. This completes the fixing of the wiring device 50 to the wiring device fixture 1. Note that the device mounting portion 17 is not shown in FIG. 6.

[0033] Next, in the above description, the wiring apparatus fixing body 1 is fixed to the pillar 60 as a structure, but as shown in Figures 7 and 8, it can also be fixed to the furring strips 61 of a building. In this case, the furring strips 61 can be fixed by abutting the entire upper side wall 11a or the entire lower side wall 11b against the furring strips 61 in a manner similar to when the furring strips 61 are fixed to the pillar 60, and then driving screws 80 into the fixing portions 19 of these side walls 11.

[0034] In the wiring apparatus fixture 1 of this embodiment, the connection portion 23 is positioned rearward and spaced from the front end 12 of the side wall 11, and the fixing portion 19 is formed by an elongated hole 20 whose front end 12 is located closer to the opening 15 than the connection portion 23. Therefore, when fixing to the furring strip 61, the furring strip 61 can be fixed by placing the furring strip 61 between the opening 15 and the connection portion 23 on the outer surface 13 of the upper side wall 11a, abutting its underside against the abutment surfaces 22 of the opening-side abutment portion 21a and the front and rear abutment portions 21b across these abutment surfaces, and inserting a screw 80 through the fixing portion 19 and driving it into the furring strip 61. After that, the connection portion 23 is not blocked by the furring strip 61, so the conduit 40 can also be connected to the connection portion 23 of the upper side wall 11a.

[0035] Next, the operation of the wiring apparatus fixing body 1 of this embodiment will be described. The connection portion 23 of the conduit 40 has a through hole 24 into which the tip portion 44 of the conduit 40 enters, and has an inlet 26 at a portion of the circumference of the through hole 24 that can be positioned within the through hole 24 by moving the conduit 40 radially, so that only the tip portion 44 of the conduit 40 enters the through hole 24. As a result, the end of the conduit 40 connected to the through hole 24 does not protrude into the accommodating space 14. As a result, a large accommodation space can be secured for the wiring device 50 and the excess portion 55 of the cable 54 to be accommodated in the accommodating space 14, and interference between the conduit 40, the excess portion 55 of the cable 54, and the wiring device 50 within the accommodating space 14 is prevented.

[0036] Furthermore, since the restricting portion 30 is provided, facing the inlet 26 of the connection portion 23 and coming into contact with the tip of the electric conduit 40 arranged in the through-hole 24, the tip 44 of the electric conduit 40 is restricted from protruding inward from the inner surface of the side wall 11. This reliably restricts the end of the electric conduit 40 from protruding into the accommodation space 14.

[0037] Furthermore, the restricting portion 30 allows only one protrusion 42 of the tip end 44 of the conduit 40 to be positioned in the inlet 26, and the engaging portion 28 is provided at a position where it engages with the recess 43 adjacent to the one protrusion 42 when the one protrusion 42 of the conduit 40 is positioned in the through-hole 24. In other words, the engaging portion 28 is provided at a height very close to the outer surface 13 of the side wall 11. This in turn makes it possible to reduce the outward protrusion length of the protrusion 27 from which the engaging portion 28 protrudes, thereby preventing the wiring apparatus fixed body 1 from becoming larger overall.

[0038] In addition, the tip end has an abutment surface 22 that abuts against the structure, and is provided with an abutment portion 21 that can abut against the structure at a plurality of different positions when the fastener is driven in, and the protrusion 27 adjacent to the through hole 24 protrudes outward in the range from the outer surface 13 of the side wall 11 to the abutment surface 22. Therefore, when the side wall 11 is applied to the structure to fix the wiring device fixture 1 to the structure, the connection portion 23 on the side wall 11 that is applied to the structure does not get in the way, and the abutment portion 21 of the side wall 11 can be directly abutted against the structure to fix it.

[0039] The abutment portions 21 provided on the upper side wall 11a and the lower side wall 11b include an opening-side abutment portion 21a extending along the front end 12 of the outer surface 13 of the side wall 11, and front-rear abutment portions 21b extending from the front to the rear, and have abutment surfaces 22 at their tip ends that abut against the structure, and when the fastener is driven in, the abutment surfaces 22 abut against the outer surface of the structure at a plurality of different positions, so that these extending surfaces allow the wiring apparatus fixing body 1 to be stably fixed to the structure without tilting.

[0040] In addition, the connection portion 23 is positioned rearward and spaced apart from the front end 12 of the side wall 11, and the fixing portion 19 consisting of the long hole 20 has its front end 12 positioned closer to the opening 15 than the connection portion 23, so that the electrical conduit 40 can be connected to the connection portion 23 of the side wall 11 even when a structure that fits within the width between the opening 15 and the connection portion 23, such as a furring strip material 61, is fixed.

[0041] Next, in the above embodiment, the cable 54 is inserted into the conduit 40 connected to the connection portion 23 of the side wall 11 and introduced into the accommodation space 14, but in the wiring apparatus fixation body 1 of this embodiment, the expansion space 31 closed by the removable blocking portion 32 is provided adjacent to the restricting portion 30, with the inlet 26 sandwiched therebetween. Therefore, by removing the blocking portion 32 to form the expansion space 31 and connecting it to the through-hole 24, the cable 54 can be easily introduced into the accommodation space 14 without using the conduit 40. Note that the surface 32a of the blocking portion 32 facing the inlet 26 also functions to restrict the protrusion of the conduit 40 into the accommodation space 14, but because it is formed separately from the restricting portion 30, even if the blocking portion 32 is accidentally removed, the adjacent restricting portion 30 remains intact, so the function of restricting the protrusion is not lost.

[0042] Furthermore, the surface 32a of the blocking portion 32 facing the inlet 26 is located on the same plane as the restricting portion 30, so that when connecting the conduit 40, as shown in Fig. 3(c), the conduit 40 can be moved radially and inserted into the through-hole 24 without getting caught on the blocking portion 32. Note that at this time, the conduit 40 may be moved horizontally after the tip thereof is brought into contact with the surface 32a of the blocking portion 32 facing the inlet 26.

[0043] Incidentally, in the above embodiment, the connection portions 23 of the conduit 40 are provided on the upper side wall 11a and the lower side wall 11b of the four side walls 11, but they may be provided on any one, three, or even all four of the four side walls 11. Also, although two connection portions 23 are provided on one side wall 11, the number is not limited. In addition, although the connection portions 23 are capable of connecting the large-diameter conduit 40a and the small-diameter conduit 40b, they may be configured to connect only one type of conduit 40.

[0044] Furthermore, the fixing portion 19 in the above embodiment is formed as an elongated hole 20 whose front end 12 is located closer to the opening 15 than the connecting portion 23, but it may be formed between the front end 12 and the rear bottom wall 16 in the side wall 11, in which case the wiring apparatus fixing body 1 can be fixed by abutting it against the furring strip 61 of the structure at any position on the opening-side abutting portion 21a. However, in this case, the conduit 40 cannot be simultaneously connected to the connecting portion 23 of the side portion 11 abutting against the furring strip 61.

[0045] Furthermore, although the wiring apparatus fixture 1 in the above embodiment is formed in a horizontally elongated rectangular frame shape, it may be formed in a vertically elongated rectangular frame shape, a square shape, or the like.

[0046] The wiring apparatus fixing body 1 has a bottom wall 16 facing the opening 15 at the rear, but may be formed in a frame shape without the bottom wall 16.

[0047] Furthermore, in the above embodiment, the restricting portion 30 is provided at a position that allows only one protrusion 42 of the tip 44 of the conduit 40 to be positioned in the inlet 26. However, due to dimensional differences in the tip 44 of the conduit 40 between manufacturers, the position of the recess 43 of the conduit 40 may not coincide with the position of the engaging portion 28 of the connection portion 23 when the tip of the conduit 40 is abutted against the restricting portion 30. In such cases, two or more protrusions 42 may be provided in the inlet 26. Note that by positioning the restricting portion 30 at the same position as or outside the inner surface of the opening 15 side of the side wall 11 where the through hole 24 is formed, the protrusion of the conduit 40 into the accommodation space 14 is restricted.

[0048] Additionally, the inlet 26 of the connection part 23, the restriction part 30, and the expansion space 31 provided on the side wall 11 are provided on the bottom wall 16, but they may also be provided on the side wall 11 adjacent to the side wall 11 having the connection part 23. Also, the expansion space 31 and the closing part 32 are provided midway between the left and right restriction parts 30, but they may also be provided at a position closer to either side of both restriction parts 30.

[0049] In the above embodiment, the function of restricting the end of the electrical conduit 40 from protruding into the housing space 14 may be provided only by the surface 32a of the blocking portion 32 facing the inlet 26.

[0050] Furthermore, in the above embodiment, the through hole 24 of the conduit 40 is formed in a substantially U-shape, and a hook-shaped retaining protrusion 29 is provided at the end of the engaging portion 28 formed along the periphery of the through hole 24 to prevent the connected conduit 40 from slipping out of the through hole 24, but the retaining configuration is not limited to this. For example, the through hole 24 and the engaging portion 28 may be formed in a shape whose inlet 26 side is narrower than the outer diameter of the conduit 40 to prevent slipping out. In this case, the conduit 40 can be introduced into the through hole 24 by passing through the narrowed inlet 26 while slightly flattening the end portion. [Explanation of symbols]

[0051] 1: wiring device fixing body, 10: peripheral wall, 11: side wall, 12: front end, 13: outer surface, 14: storage space, 15: opening, 17: device attachment portion, 19: fixing portion, 20: long hole, 21: abutment portion, 21a: opening side abutment portion, 21b: front and rear abutment portion, 22: abutment surface, 23: connection portion, 24: through hole, 26: inlet, 27: protrusion portion, 27a: side portion, 28: engagement portion, 30: regulating portion, 31: expansion space, 32: blocking portion, 32a: surface, 40: electrical conduit, 41: outer surface, 42: convex portion, 43: concave portion, 44: tip portion, 50: wiring device, 60: pillar, 61: furring strip material, 80: screw.

Claims

1. A wiring device fixing body comprising a peripheral wall having four side walls forming a rectangular frame shape and a device attachment portion capable of fixing a wiring device, wherein an accommodation space for accommodating the wiring device is formed inside the peripheral wall, an opening through which the wiring device can be inserted into the storage space is formed on the inside surrounded by the front end sides of the four side walls; At least one of the four side walls has: a fixing portion through which a fastener passes, the fastener being driven in to fix the one side wall to the structure in a state where the one side wall faces the structure; a contact portion that protrudes from the one side wall, has a contact surface at a tip end that contacts the structure, and is capable of contacting the structure at a plurality of different positions when the adhesive body is driven in; a connection portion to which the electrical conduit is connected, The connection portion is a through hole into which the tip of the electrical conduit to be connected is inserted; an introduction port formed in a part of the circumferential direction of the through hole, the introduction port being capable of disposing a tip end portion of the electric conduit in the through hole by moving the electric conduit in a radial direction; a protrusion adjacent to the through hole and protruding outward in a range from the outer surface of the side wall to the contact surface of the contact portion, a wiring fixture fixed body, characterized in that an engaging portion that engages with a recess on the outer surface of the electrical conduit placed within the through hole is provided at a position outside the outer surface of the side wall on the side of the protrusion facing the through hole.

2. 2. The wiring apparatus fixing body according to claim 1, further comprising a restricting portion that faces the inlet and abuts against a tip of the electrical conduit that is arranged in the through hole to restrict the tip of the electrical conduit from protruding beyond the inner surface of the first side wall toward the accommodating space.

3. The conduit is a corrugated pipe having convex portions and concave portions alternately and continuously formed on an outer surface in a longitudinal direction, the restricting portion is capable of arranging only one protrusion at the tip end of the conduit in the inlet, 3. The wiring apparatus fixing body according to claim 2, wherein the engaging portion is provided at a position where it engages with the recess adjacent to one of the protrusions at the tip of the electrical conduit when the protrusion is positioned within the through hole.

4. the connecting portion is disposed rearwardly and spaced apart from the front end of the first side wall, The wiring apparatus fixed body according to claim 3 , wherein the fixing portion has a long hole extending in the front-rear direction, the front end of the long hole being located closer to the opening than the connecting portion.

5. the abutment portion includes an opening-side abutment portion extending along a front end portion of an outer surface of the first side wall, and a front-rear abutment portion extending from the front to the rear, 5. The wiring apparatus fixed body according to claim 1, wherein the front and rear contact portions are provided on both sides of the fixing portion.

6. 5. The wiring apparatus fixed body according to claim 2, wherein an expanded space communicating with the through hole across the inlet is provided adjacent to the restricting portion.

7. The wiring apparatus fixing body according to claim 6, characterized in that the expansion space is closed by a removable closing portion, and a surface of the closing portion facing the inlet is located on the same plane as the restricting portion.

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