Wiring box device and wiring box installation structure

Abstract

To provide a wiring box device in which a wiring accessory can be installed in a different direction relative to a wiring box.SOLUTION: A wiring box device 1 includes: a wiring box 10 having a first accessory fixing part capable of fixing a wiring accessory; an attaching part 22 capable of being attached to the wiring box 10 with a screw 60 that can be screwed into the first accessory fixing part; and a box cover 20 having a second accessory fixing part 25 to which the wiring accessory is fixed. The first accessory fixing part includes four pairs of female screw parts, each pair opposing each other in a vertical direction, and the second accessory fixing part 25 includes, as one set, a pair of female screw parts 26, 26 opposing each other. The box cover 20 can be attached to the wiring box 10 such that an opposing direction of the pair of female screw parts 26, 26 of the second accessory fixing part 25 is orthogonal to a first direction. The wiring accessory is disposed inside a through hole 23 of the box cover 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wiring box device and a wiring box installation structure for installing wiring devices such as switches and outlets on the wall of a building. [Background technology]

[0002] Wiring devices such as lighting fixture switches and outlets are installed on the walls of building partitions, bathroom vanities, office automation desks, etc. Wiring devices are often installed via a fixture frame in a wiring box installed behind the wall. Patent Document 1 discloses a wiring box with regard to the installation of wiring devices. This wiring box is formed in a rectangular box shape with a peripheral wall erected around the periphery of a rectangular bottom wall and an opening formed at the tip of the peripheral wall, and has a pair of opposing fixture fixing portions. The wiring device is installed on the wall by placing the fixture frame that holds it on the wall surface, inserting screws into a pair of insertion holes provided in the fixture frame that correspond to the fixture fixing portions of the wiring box, and screwing them through the wall holes to the fixture fixing portions of the wiring box behind the wall.

[0003] Patent Document 2 also describes a wiring box device. This wiring box device comprises a wiring box without an appliance fixing portion and a box cover that has a pair of opposing appliance fixing portions and is attached to the opening of the wiring box, and the wiring device is installed on a wall surface by inserting screws into a pair of insertion holes provided in the appliance frame that holds the wiring device, and then threading the screws through the wall holes to the appliance fixing portions of the box cover behind the wall. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-053845 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-034771 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the wiring box described in Patent Document 1 has a fixed orientation and pitch for the pair of opposing fixture fixing parts, and when changing the installation orientation or pitch of the wiring fixture, a separate wiring box had to be prepared.

[0006] Furthermore, in the wiring box device described in Patent Document 2, if the pitch of a pair of opposing appliance fixing portions is different, it is not possible to install wiring appliances accordingly. Furthermore, in this wiring box device, if the opening of the wiring box is square, the opposing orientation of the appliance fixing portions can be changed by changing the installation orientation of the box cover and assembling it. However, if the opening of the wiring box is rectangular, it is obviously not possible to change the installation orientation of the box cover and attach it to the wiring box. Therefore, in this wiring box device, the opposing orientation of the appliance fixing portions of the box cover relative to the wiring box cannot be changed, and therefore the orientation of the wiring appliance cannot be changed for installation.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a wiring box device and a wiring box installation structure that allow wiring devices to be installed in different orientations relative to the wiring box. [Means for solving the problem]

[0008] The wiring box device of claim 1 includes a wiring box having a peripheral wall surrounding an internal space, an opening formed on at least one end side of the peripheral wall that exposes the interior to the outside, and a first appliance fixing part to which a wiring appliance arranged on the one side can be fixed directly or via an appliance frame; a box cover having an attachment portion that can be attached to one end side of the wiring box with a screw that can be screwed into the first device fixing portion, and a second device fixing portion to which the wiring device is fixed directly or via a device frame; The first instrument fixing portion includes a pair of female screw portions facing each other in a first direction, or a plurality of pairs of female screw portions arranged side by side in a direction perpendicular to the first direction, The second instrument fixing portion has one pair of opposing female screw portions as one set, or has multiple sets of female screw portions arranged side by side in a direction perpendicular to the opposing direction of the pair, The box cover can be attached to the wiring box so that the opposing direction of the pair of female screw portions of the second instrument fixing portion is perpendicular to the first direction. This allows the second fixture fixing portion to be formed on the wiring box in a different orientation from the first fixture fixing portion. Also, since the wiring box has the first fixture fixing portion, it can be used alone to fix a wiring fixture.

[0009] In the wiring box device of claim 2, the first fixture fixing portion includes a plurality of sets of a pair of female screw portions facing each other in a first direction, the sets being arranged side by side in a direction perpendicular to the first direction, The second instrument fixing portion has one pair of female screw portions that face each other at a distance greater than that of the pair of female screw portions of the first instrument fixing portion, or has multiple pairs of pairs arranged side by side in a direction perpendicular to the facing direction of the pair. This makes it possible to secure fixtures that require a larger spacing than fixtures that can be secured to the wiring box.

[0010] In the wiring box device of claim 3, in particular, the box cover can be attached to the wiring box by a screw that is screwed into the first fixture fixing portion. This allows the first fixture fixing portion of the wiring box to also be used as an attachment portion for attaching the box cover by screwing a screw into it, so there is no need for a dedicated attachment portion for attaching the box cover, and by providing a dedicated attachment portion, it does not get in the way and the internal space of the wiring box can be made larger.

[0011] In the wiring box device of claim 4, the second appliance fixing portion has only one pair of opposing female screw portions, and is shifted in the first direction from the opposing intermediate position of the pair of first appliance fixing portions. This allows the wiring device to be stored biased to one side within the internal space, and the internal space of the wiring box can be made wider on the other side of the through hole, making it easier to store excess cable length.

[0012] The wiring box installation structure of claim 5 is a wiring box having a bottomed box shape with a rectangular bottom wall and a rectangular frame-shaped peripheral wall that stands upright with the bottom wall as a base end and forms an opening at a tip end opposite the bottom wall, and a box cover is attached to the opening of the wiring box, the box cover is attached to the wiring box in such a manner that its closing portion closes a part of the opening, and the direction in which the long sides of a rectangular through-hole that exposes the internal space of the wiring box to the outside extends is located on the long side of the wiring box and follows the opposing long side peripheral wall, The wiring device is fixed to the through-hole by a fixing portion provided on the opposite side of the through-hole. Formed on each short side, The through-hole is disposed biased toward one of the opposing long side peripheral walls of the wiring box. With this, since the through hole is biased to one side in the closed portion, the internal space of the wiring box can be made wider on the other side of the through hole, making it easier to store excess cable. [Effects of the Invention]

[0013] In the present invention, since the wiring box includes the first fixture fixing portion, the wiring box can be used alone to fix a wiring fixture. The box cover includes the second fixture fixing portion and can be attached to the wiring box so that the opposing direction of the pair of female threads of the second fixture fixing portion is perpendicular to the first direction in which the pair of female threads of the first fixture fixing portion face each other. Therefore, the second fixture fixing portion can be formed on the wiring box via the box cover in a different orientation from the first fixture fixing portion. As a result, wiring fixtures can be installed in a flexible manner in response to on-site conditions. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of a wiring box device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a front view of the wiring box device of FIG. [Figure 3]2A and 2B show the wiring box of FIG. 1, in which FIG. 2A is a perspective view and FIG. 2B is a front view. [Figure 4] FIG. 2 is a perspective view of the box cover of FIG. 1. [Figure 5] 5A and 5B show the box cover of FIG. 4, in which FIG. 5A is a plan view and FIG. 5B is a front view. [Figure 6] 5A is a perspective view showing the box cover of FIG. 4 fixed to the furring strip of a structure, and FIG. 5B is a perspective view showing the box cover fixed to a pillar of the structure. [Figure 7] 9 is a cross-sectional view taken along line AA in FIG. 8, showing a state in which a wiring fixture is installed in the wiring box device in FIG. 1. FIG. [Figure 8] 2 is a front view showing a state in which a wiring fixture is installed in the wiring box device of FIG. 1. FIG. [Figure 9] 4 is a front view showing a state in which a wiring device is installed in the wiring box of FIG. 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, a wiring box device according to an embodiment of the present invention will be described with reference to the drawings. 1 and 2, the wiring box device 1 is for installing wiring devices 51 such as switches and outlets on a wall material 43 or the like, and is composed of a wiring box 10 and a box cover 20. In the following description, the vertical direction means the vertical direction in FIG. 1, and the first direction in the wiring box 10 means the vertical direction.

[0016] As shown in Figure 3, the wiring box 10 is formed in the shape of a rectangular box with a bottom, having a bottom wall 11, a peripheral wall 12 that stands upright from the bottom wall 11 and surrounds an internal space 14, and an opening 13 at the tip end of one end of the peripheral wall 12 that exposes the interior to the outside.

[0017] The bottom wall 11 and the peripheral wall 12 are provided with cable insertion holes 15 formed by punching. The internal space 14 of the wiring box 10 accommodates the excess length 50a of the cable 50 that is pushed back into the internal space 14 after the cable 50 is inserted into the internal space 14 from the cable insertion hole 15 behind the wall and pulled out to the surface of the wall through the opening 13 and connected to the wiring fixture 51.

[0018] A first fixture fixing portion 16 is provided on the inner peripheral edge of the opening 13 of the wiring box 10. The first fixture fixing portion 16 can attach the box cover 20 with screws 60 and can fix a wiring fixture 51 directly or indirectly via a fixture frame 52. Here, the wiring fixture 51 is shown as being held by the fixture frame 52 and attached to the wiring box 10. As shown in FIGS. 8 and 9 , the fixture frame 52 is formed in a rectangular plate shape, has a holding space in the center for holding the wiring fixture 51, and has a pair of mounting holes through which mounting screws are inserted, formed at the middle positions in the width direction at both ends in the longitudinal direction. Four sets of the first fixture fixing portion 16 are arranged side by side, each set having a pair of female threads 18, 18 facing each other in the vertical direction, which is the first direction. The first fixture fixing portion 16 is arranged in a direction perpendicular to the first direction, i.e., parallel to the peripheral wall 12a on the long side. The female screw portion 18 is engraved on the inner peripheral surface of a short-axis, approximately cylindrical protrusion 17 that protrudes from the end of the peripheral wall 12 on the opening 13 side toward the inside of the opening 13 and has a tip surface that is located on the same plane as the opening 13, and the screw 60 is screwed into the female screw portion 18. With the exception of some parts, the bottom wall 11, peripheral wall 12, first appliance fixing portion 16, etc. of the wiring box 10 are formed and arranged symmetrically in the vertical and horizontal directions.

[0019] 4 and 5, the box cover 20 includes a rectangular plate-shaped closing portion 21 and a fixing portion 31 that can be fixed to a structure 40. The closing portion 21 covers a portion of the opening 13 of the wiring box 10, which in this embodiment is a portion of the opening. The box cover 20 is formed symmetrically overall.

[0020] The upper part of the closing part 21 is provided with a plurality of attachment parts 22, four in this embodiment in the horizontal direction parallel to the upper side of the opening 13, each consisting of an insertion hole through which a screw 60 that can be threaded into the first appliance fixing part 16 on the upper side of the opening 13 of the wiring box 10 is inserted. The lower part of the closing part 21 is provided with a plurality of attachment parts 22, four in this embodiment in the horizontal direction parallel to the lower side of the opening 13, each consisting of an insertion hole through which a screw 60 that can be threaded into the first appliance fixing part 16 on the lower side of the opening 13 of the wiring box 10 is inserted. The box cover 20 is attached to the wiring box 10 by the screws 60 inserted into these attachment parts 22.

[0021] A through-hole 23 that exposes the internal space 14 of the wiring box 10 to the outside is formed through the upper portion of the closure portion 21 at a position spaced from the upper edge 21a. The through-hole 23 is a horizontally elongated rectangular through-opening that is formed at a position biased toward the upper side of the peripheral walls 12a, 12a on the opposing long sides of the wiring box 10, and is formed at a position biased toward the upper side in the closure portion 21. The long sides 23a of the through-hole 23 extend parallel to the peripheral walls 12a on the opposing long sides of the wiring box 10, and the entire through-hole 23 overlaps with the opening 13 of the wiring box 10.

[0022] On the opposing left and right short sides 23b of the through hole 23, protruding pieces 24 are formed, respectively, that protrude into the through hole 23, and the protruding pieces 24 are provided with second fixture fixing portions 25 to which the wiring fixture 51 is fixed directly or indirectly via the fixture frame 52. In this embodiment, the wiring fixture 51 is held by the fixture frame 52 and attached to the second fixture fixing portion 25 of the box cover 20. When the box cover 20 is attached to the wiring box 10, the second fixture fixing portion 25 is located within the opening 13 of the wiring box 10 as viewed from the front side of the box cover 20. However, a portion of the second fixture fixing portion 25 may protrude outward from the opening 13 of the wiring box 10.

[0023] The second fixture fixing portion 25 is formed with female thread portions 26 to which screws 60 for attaching a fixture frame 52 that holds a wiring fixture 51 are attached, and the pair of female thread portions 26, 26 face each other at a distance greater than that of the pair of female thread portions 18, 18 of the first fixture fixing portion 16. Two female thread portions 26 are formed on each of the left and right protruding pieces 24, 24, spaced slightly apart in the horizontal direction, and the distance between the female thread portions 26, 26 on both the left and right sides of the through hole 23 is formed at two different intervals, long and short, corresponding to the distance between the pair of mounting holes 52a, 52a provided at both longitudinal ends of the fixture frame 52. However, strictly speaking, the second fixture fixing portion 25 is provided with two pairs of long and short female thread portions 26, 26 spaced slightly apart on the same horizontal line, but the difference in spacing is slight, and in the present invention, the two pairs of long and short female thread portions 26, 26 are also broadly referred to as a pair of female thread portions 26, 26.

[0024] Furthermore, since the through-hole 23 is disposed offset upward in the closing portion 21, the second fixture fixing portion 25 is provided at a position offset upward in the up-down direction, which is the first direction, from the intermediate position between the pair of upper and lower opposing female screw portions 18, 18 of the first fixture fixing portion 16, in other words, from the intermediate position P of the peripheral wall 12b on the short side of the wiring box 10 shown in Figures 2 and 3. Accordingly, in the wiring box device 1, an accommodation space 14a, which is closed by the closing portion 21 and which accommodates the excess portion 50a of the cable 50, is formed on the other side, that is, below the through-hole 23 opposite the offset side.

[0025] The through-hole 23 is configured so that a plurality of wiring devices 51 can be installed side by side by attaching the device frame 52 to the second device fixing portion 25. Note that the through-hole 23 may be configured so that only one wiring device 51 can be attached.

[0026] Two fixing flanges 30 are formed at both ends of the upper side 21a of the closure portion 21, and are bent perpendicular to the closure portion 21. The end sides of each fixing flange 30 are provided with fixing portions 31 each having a long hole through which a screw 60 is inserted to fix the flange to the structure 40. Furthermore, a weak portion 32 is provided in each of the areas slightly inwardly between the fixing portions 31 to bend the flange by plastic deformation. The weak portion 32 is formed as a long hole-shaped groove extending in a direction perpendicular to the upper side 21a of the closure portion 21. This allows the fixing flanges 30 to bend the fixing portion 31 side in a direction perpendicular to the plane of the fixing flange 30 by plastic deformation at the weak portion 32.

[0027] At both left and right ends of the upper part of the closure part 21, along-side portions 27 formed of annular planes are formed by bending in a direction perpendicular to the plane of the closure part 21, and a cable 50 is inserted through a circular hole 28 in the center of the along-side portions 27. However, these along-side portions 27 are not necessarily required.

[0028] To attach the box cover 20 formed in this manner to the wiring box 10, screws 60 are inserted into the insertion holes of the attachment portions 22 on the upper and lower sides of the box cover 20 and screwed into the female threaded portions 18, 18 facing in the first direction of the first appliance fixing portion 16 of the wiring box 10. As a result, the screws 60 are screwed into the first appliance fixing portion 16 at a total of four locations, and the box cover 20 is attached to the wiring box 10 so that the opposing direction of the pair of female threaded portions 26, 26 of the second appliance fixing portion 25 is perpendicular to the first direction in which the pair of female threaded portions 18, 18 of the first appliance fixing portion 16 face each other. In this way, the box cover 20 attached to the wiring box 10 constitutes the wiring box apparatus 1 shown in FIGS. 1 and 2. The above embodiment also constitutes a wiring box installation structure.

[0029] For example, as shown in Figure 6(a), the wiring box device 1 can be attached to the furring strip 41 by attaching screws 60 to the two fixing portions 31 while the upper surface of the fixing flange 30 of the box cover 20 is aligned and abutted against the underside of the furring strip 41, which is the structure 40, and then the wiring box 10 can be attached to the box cover 20. In addition, the wiring box device 1 can be attached to the pillar 42 by bending the weak part 32 of the fixing flange 30 in a direction perpendicular to the plane, and then attaching a screw 60 to the fixing part 31 while aligning the bent surface of the fixing flange 30 with the pillar 42, which is the structure 40, as shown in Figure 6(b), and then attaching the wiring box 10 to the box cover 20. When fixing the wiring box device 1 to the structure 40, as described above, the box cover 20 may be fixed to the structure 40 first and then the wiring box 10 may be attached to the box cover 20, or the wiring box 10 may be fixed to the structure 40 first and then the box cover 20 may be attached to the wiring box 10. Fixing the wiring box 10 to the structure 40 can be performed, for example, by inserting a screw 60 into a fixing through-hole 12c provided in the peripheral wall 12b on the short side of the wiring box 10 and screwing it into a pillar 42, as shown in FIG. 3(a).

[0030] Next, a method for installing the wiring fixture 51 on a wall material 43 such as a partition wall using the wiring box device 1 of this embodiment will be described. Here, a case where the box cover 20 is fixed to the furring strip 41 of a building will be described. Note that the box cover 20 can also be fixed to a pillar 42 of a building in the same manner.

[0031] First, as described above, the box cover 20 is attached to the wiring box 10 to form the wiring box device 1, and then the box cover 20 is fixed to the furring strip 41. In this state, the box cover 20 is fixed so that the front surface of the closure portion 21 is flush with the side surface of the furring strip 41, as shown in FIG.

[0032] Next, the cable 50 is pulled into the interior space 14 through the cable insertion hole 15 of the wiring box 10. Next, a wall material 43, which serves as a partition wall, is erected so as to abut against the front surface of the closing portion 21 of the box cover 20. After the wall material 43 is erected, a wall hole 44 is formed in the wall material 43, and the second fixture fixing portions 25 provided on both sides of the through hole 23 of the box cover 20 are faced to the wall surface. Next, the cable 50 is pulled out to the wall surface and connected to the wiring fixture 51 held by the fixture frame 52. After that, while pushing the excess portion 50a of the cable 50 back toward the back side of the wall, mounting screws 61 are inserted into a pair of mounting holes 52a, 52a formed at the upper and lower ends of the fixture frame 52 and screwed into the second fixture fixing portions 25 of the box cover 20 to attach the fixture frame 52. Finally, a decorative plate 53 is attached to the front side of the fixture frame 52. The wiring fixture 51 thus installed on the wall material 43 is shown in FIGS. 7 and 8. 8 does not show the furring strips 41, wall material 43, and decorative plate 53. After installation, if there are multiple wiring devices 51, for example, two, they are installed side by side as shown in FIG.

[0033] Although the wiring device 51 is fixed to the box cover 20 in the above description, it can also be fixed directly to a wiring box 10 to which the box cover 20 is not attached. The first device fixing portions 16 of the wiring box 10 of this embodiment are arranged in four sets of a pair of female screw portions 18, 18 facing each other in the vertical direction, which is the first direction, and are arranged in parallel in a direction perpendicular to the first direction. Therefore, any number and positions of the device frames 52 corresponding to each set can be selected and attached from the four first device fixing portions 16. As an example, FIG. 9 shows a wiring box 10 in which the device frames 52 are attached to all four first device fixing portions 16, and two wiring devices 51 are held by each of the device frames 52. Note that the structure 50, wall material 43, and decorative plate 53 are not shown in FIG. 9.

[0034] In this way, the wiring box 10 can be used as a component that constitutes the wiring box device 1, and can also be used as a component for installing the wiring device 51 alone without using the box cover 20.

[0035] Next, the operation of the wiring box device 1 and the wiring box installation structure of this embodiment will be described. Since the wiring box 10 is provided with the first fixture fixing portion 16, the wiring box 10 can be used alone to attach the fixture frame 52 to the first fixture fixing portion 16 and fix the wiring fixture 51.

[0036] The box cover 20 includes the second fixture fixing portion 25, and can be attached to the wiring box 10 so that the opposing direction of the pair of female screw portions 26, 26 of the second fixture fixing portion 25 is perpendicular to the first direction, i.e., the up-down direction, in which the pair of female screw portions 18, 18 of the first fixture fixing portion 16 oppose each other. Therefore, it can be said that the second fixture fixing portion 25 can be formed in the wiring box 10 via the box cover 20 in an orientation different from that of the first fixture fixing portion 16. This allows the wiring fixture 51 to be installed flexibly in accordance with on-site conditions.

[0037] In addition, the second fixture fixing portion 25 has a pair of female screw portions 26, 26 that face each other at a larger distance than the pair of female screw portions 18, 18 of the first fixture fixing portion 16, so it can fix wiring fixtures 51 or fixture frames 52 that require a larger distance than the fixture frame 52 that can be fixed to the wiring box 10, and can also fix more wiring fixtures 51 than the first fixture fixing portion 16. Furthermore, the pitches of the opposing female screw portions 26, 26 of the second instrument fixing portion 25 are provided in two different sizes, so that instrument frames 52 with different pitches can also be fixed to the second instrument fixing portion 25.

[0038] Furthermore, the box cover 20 can be attached to the wiring box 10 by means of a screw 60 that is threaded into the first fixture fixing portion 16. Therefore, the first fixture fixing portion 16 functions not only as a fixing portion for fixing the fixture frame 52 when the wiring box 10 is used alone, but also as an attachment portion for attaching the box cover 20 to the wiring box 10. Therefore, a dedicated attachment portion for attaching the box cover 20 is not required for the wiring box 10, and its presence does not get in the way, and the internal space 14 of the wiring box 10 can be made larger accordingly.

[0039] In addition, the second appliance fixing portion 25 of the box cover 20 is provided with only one pair of opposing female screw portions 26, 26, and is formed at a position shifted upward in the up-down direction, which is the first direction, from the midpoint between the pair of opposing female screw portions 18, 18 of the first appliance fixing portion 16. Therefore, the positions of the through holes 23 formed at both left and right ends of the second appliance fixing portion 25 are shifted upward, and as a result, the space on the opposite side to the shifted direction of the through holes 23 in the internal space 14 of the wiring box 10 becomes wider, making it easier to store the excess portion 50a of the cable 50 in the internal space 14.

[0040] Incidentally, the first fixture fixing portion 16 of the wiring box 10 in the above embodiment has four sets of opposing female screw portions 18, 18 arranged in a direction perpendicular to the opposing direction of the pair, but when implementing the present invention, the number of sets is not limited to this.

[0041] The second instrument fixing portion 25 of the box cover 20 is provided as a set of a pair of opposing female screw portions 26, 26, but multiple sets may be provided by increasing the vertical width of the through hole 23.

[0042] Furthermore, the wiring device 51 in the above embodiment is fixed by holding it in the device frame 52 and attaching the device frame 52 to the first device fixing portion 16 of the wiring box 10 and the second device fixing portion 25 of the box cover 20, but it may also be fixed directly to these device fixing portions without using the device frame 52.

[0043] In addition, the through hole 23 of the box cover 20 in the above embodiment is formed at a position biased upward in the closing portion 21, and the second instrument fixing portion 25 is provided at a position shifted upward from the middle position of the pair of opposing first instrument fixing portions 16, but it may be provided at a position biased downward in the closing portion 21 or at a middle position in the vertical direction, or at a position shifted downward from the middle position of the pair of opposing first instrument fixing portions 16 or at a middle position.

[0044] Furthermore, the second instrument fixing portion 25 is provided on the protruding piece 24 that protrudes inward into the through-hole 23 on the short side 23b side of the through-hole 23, but may be provided at a location other than this.

[0045] Furthermore, in the above embodiment, the box cover 20 is attached to the wiring box 10 by threading the screw 60 inserted into the attachment portion 22 into the first fixture fixing portion 16 of the wiring box 10, but the attachment portion may be provided at a different location in the closure portion 21 rather than at a position corresponding to the first fixture fixing portion 16, and the screw 60 inserted into this attachment portion may be threaded into a screw hole provided at a location other than the first fixture fixing portion 16, thereby attaching the box cover to the wiring box 10. The box cover 20 is attached to the wiring box 10 using screws 60, but may be attached to the wiring box 10 by other means.

[0046] Additionally, although one through-hole 23 is formed in the box cover 20, a plurality of through-holes may be formed at intervals in the vertical direction. The box cover 20 is formed to be symmetrical on the whole, but is not limited to this.

[0047] In addition, with the exception of some parts, the bottom wall 11, peripheral wall 12, first appliance fixing portion 16, etc. of the wiring box 10 are formed symmetrically in the vertical and horizontal directions and are installed in symmetrical positions, but this is not limited to this. Furthermore, although the wiring box 10 is formed in a horizontally elongated rectangle, it may be formed in a square. The opening 13 of the wiring box 10 is formed at one end of the peripheral wall 12, but it may be formed at both end sides of the peripheral wall 12 without forming the bottom wall 11.

[0048] In addition, the wiring box device 1 in the above embodiment is fixed to the structure 40 by inserting a screw 60 into the fixing portion 31 provided on the fixing flange 30 of the box cover 20, but it may also be fixed to the structure 40 by a fixing portion provided on the bottom wall 11 or peripheral wall 12 of the wiring box 10.

[0049] Furthermore, the box cover 20 is provided with a fixing flange 30 having fixing portions 31 at two ends of the upper edge 21a of the closing portion 21, but as described above, if the wiring box 10 is provided with fixing portions for fixing to the structure 40, the fixing flange 30 does not need to be provided. [Explanation of symbols]

[0050] 1: Wiring box device, 10: wiring box, 11: bottom wall, 12: peripheral wall, 12a: peripheral wall on long side, 13: opening, 14: internal space, 16: first device fixing part, 18: female screw part, 20: box cover, 21: closing part, 22: attachment part, 23: through hole, 23a: long side, 23b: short side, 25: second device fixing part, 26: female screw part, 51: wiring device, 60: screw, P: intermediate position between a pair of female screw parts facing each other above and below the first device fixing part.

Claims

1. a wiring box having a peripheral wall surrounding an internal space, an opening formed on at least one end side of the peripheral wall that exposes the interior to the outside, and a first appliance fixing portion to which a wiring appliance arranged on the one side can be fixed directly or via an appliance frame; a box cover having an attachment portion attachable to one end side of the wiring box and a second appliance fixing portion to which the wiring appliance is fixed directly or via an appliance frame; The first instrument fixing portion includes a pair of female screw portions facing each other in a first direction, or a plurality of pairs of female screw portions arranged side by side in a direction perpendicular to the first direction, The second instrument fixing portion includes a pair of opposing female screw portions as one set, or includes a plurality of sets arranged side by side in a direction perpendicular to the opposing direction of the pair, A wiring box device characterized in that the box cover can be attached to the wiring box so that the opposing direction of the pair of female screw portions of the second instrument fixing portion is perpendicular to the first direction.

2. The first instrument fixing portion includes a pair of female screw portions facing each other in the first direction, and a plurality of such pairs are arranged in a direction perpendicular to the first direction, The wiring box device according to claim 1, characterized in that the second instrument fixing portion has one pair of female screw portions that face each other at a distance greater than that of the pair of female screw portions of the first instrument fixing portion, or has multiple pairs of pairs arranged side by side in a direction perpendicular to the direction in which the pair faces each other.

3. The box cover is fixed to the wiring box by a screw that is screwed into the first fixture fixing portion.

3. The wiring box device according to claim 1, wherein the wiring box device is attachable to a wiring box.

4. The wiring box device according to claim 3, characterized in that the second appliance fixing portion has only one pair of opposing female thread portions, and is offset in the first direction from the opposing midpoint position of the pair of opposing first appliance fixing portions.

5. A wiring box installation structure having a bottomed box shape including a rectangular bottom wall and a rectangular frame-shaped peripheral wall that stands upright with the bottom wall as a base end and forms an opening at a tip end opposite the bottom wall, and a box cover attached to the opening of the wiring box, the box cover is attached to the wiring box in such a manner that its closing portion closes a part of the opening, and the direction in which the long sides of a rectangular through-hole that exposes the internal space of the wiring box to the outside extends is located on the long side of the wiring box and follows the opposing long side peripheral wall, The wiring device is fixed to the through-hole by a fixing portion provided on the opposite side of the through-hole. Formed on each short side, The wiring box installation structure is characterized in that the through-hole is disposed biased toward one of the opposing long side peripheral walls of the wiring box.

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