JP7641697B2 - Exposed wiring box, and installation method of exposed wiring box and wiring duct - Google Patents

Description

The present invention relates to an exposed wiring box that is installed on the wall surface after construction of a building, and to a method for installing an exposed wiring box and a wiring duct.

A wiring box for mounting wiring devices such as electrical outlets to be attached to the wall of a building is usually installed on the back side of the wall, but may be added after the building is constructed, in which case the wiring box is installed exposed on the front side of the wall. In this case, a wiring duct that houses the cables is arranged along the wall up to the wiring box, and the cables inside the wiring duct are pulled out of the wiring duct and housed in the wiring box. Examples of this type of exposed wiring box that is added after the building is constructed are disclosed in Patent Documents 1 and 2.

When installing the wiring boxes described in Patent Documents 1 and 2 on a wall surface, the wiring box is fixed to the wall surface by aligning the installation center position of the wiring device such as an outlet with the center position of the wiring box, and then the wiring duct that forms the wiring path is cut and adjusted in length using the fixed wiring box as a guide. After that, the wiring duct is inserted into the wiring box along the wall surface from an insertion opening provided in the peripheral wall of the wiring box, while being bent, and fixed to the wall surface with double-sided adhesive tape. Here, the wiring duct is composed of a long base that is fixed to the wall surface using double-sided adhesive tape or the like, and a long cover body that is attached to the base from above.

JP 2004-201469 A JP 2012-228176 A

However, in the installation of conventional exposed wiring boxes, when the wiring duct is attached to the wall by gluing, the double-sided adhesive tape attached to the base of the wiring duct can become prematurely attached to an unexpected location during the installation process. For this reason, until the wiring duct is placed in the designated position, the end of the base must be inserted into the insertion opening of the wiring box while being careful not to allow the double-sided adhesive tape to become glued to the wall. Moreover, this work must be performed while adjusting the base of the wiring duct so that it is held in a fixed direction, such as horizontally or vertically. This makes the installation of the wiring duct a tedious process.

In addition, after the wiring duct base is installed on the wall, when attaching the wiring duct lid to the base from above, the lid must be inserted into the narrow gap between the wiring box's insertion opening and the base while being bent, and then fitted to the base, making the installation of the lid difficult. The same is true when fixing the wiring duct base with nails, screws, etc.

The present invention aims to provide an exposed wiring box that can smoothly connect a wiring duct that is arranged along the wall surface when installed on the wall surface of a building, as well as a method for installing the exposed wiring box and the wiring duct.

The exposed wiring box of claim 1 has a wiring device installed on the front surface thereof,
The device has a bottom wall having a fixing portion to be fixed to a structure, and a peripheral wall extending upright from the bottom wall,
An insertion opening is formed in the peripheral wall, into which an end of a wiring duct that configures an arrangement path for a cable connected to the wiring device is inserted,
the fixing portion is a long hole extending along an insertion direction of the wiring duct into the insertion opening,
a contact opening is formed in the bottom wall, the contact opening communicating with the insertion opening and extending in a direction penetrating the peripheral wall in which the insertion opening is formed, so that the end of the inserted wiring duct can be contacted with the structure so that the end of the wiring duct can be inserted inside the inner surface of the peripheral wall;
The length of extension of the long hole is greater than the length of extension of the abutment opening from the outer surface of the peripheral wall on which the insertion opening is formed.

The exposed wiring box of claim 2 has a wiring device installed on the front surface thereof,
The container is formed in an elongated rectangular box shape and has a bottom wall having a fixing portion to be fixed to a structure, and a peripheral wall extending upright from the bottom wall,
a housing opening having a size capable of housing a rear end side of the wiring device in a direction in which a rectangular long side side facing forward of the wiring device is aligned with a longitudinal direction of the exposed wiring box is formed on a tip side of the peripheral wall;
An insertion opening is formed in a pair of opposing peripheral walls on both sides in the longitudinal direction of the peripheral walls, into which an end of a wiring duct that configures an arrangement path for a cable connected to the wiring device is inserted;
the fixing portion is a long hole extending along the longitudinal direction in a direction in which the wiring duct is inserted into the insertion opening,
The length of the long hole is greater than the thickness of the peripheral wall in which the insertion opening is formed, and is large enough to simultaneously accommodate two screws that are driven into the structure through one long hole.

The method for installing an exposed wiring box and a wiring duct of claim 3 includes a bottom wall having a fixing portion fixed to a structure, and a peripheral wall erected from the bottom wall, the peripheral wall being formed with an insertion opening into which an end of a wiring duct constituting an internal arrangement path for a cable connected to a wiring fixture installed in front of the box is inserted, and the fixing portion is an elongated hole extending in a direction in which the wiring duct is inserted into the insertion opening and having a size exceeding a plate thickness of the peripheral wall in which the insertion opening of the wiring duct is formed, the method includes temporarily fixing the exposed wiring box in a normal installation position and a temporary position moved in the insertion direction into the insertion opening by more than an insertion length of the wiring duct connected to the insertion opening, the method comprising the steps of: temporarily fixing the exposed wiring box to a normal installation position and a temporary position moved in the insertion direction into the insertion opening by more than an insertion length of the wiring duct connected to the insertion opening, the method comprising the steps of:
placing the exposed wiring box in the temporary position;
an end of the wiring duct is disposed at the end disposition location of the wiring duct exposed thereby;
The exposed wiring box is slid to the normal installation position to receive the end of the wiring duct through the insertion opening;
The exposed wiring box in the correct installation position is finally fixed to the structure by further tightening the screws.

In the present invention, the length of the long hole, which is the fixing portion of the exposed wiring box, exceeds the thickness of the peripheral wall in which the insertion opening is formed, or is greater than the length of the abutment opening from the outer surface of the peripheral wall in which the insertion opening is formed. Therefore, when connecting the wiring duct to the exposed wiring box, in a state in which the exposed wiring box is temporarily fixed to the wall surface in the regular installation position in the long hole with a screw, the exposed wiring box is slid to the temporary position, and the end arrangement location where the end of the wiring duct is planned to be arranged can be exposed on the wall surface, so that the wiring duct can be arranged from the front on the wall surface without interfering with the exposed wiring box. After the wiring duct is installed, the exposed wiring box is slid to the regular installation position and the exposed wiring box can be permanently fixed to the wall surface by tightening the screw. This allows the wiring duct to be smoothly installed on the wall surface and connected to the exposed wiring box.

1A and 1B show an exposed wiring box according to an embodiment of the present invention, in which FIG. 1A is a perspective view seen from the opening side, and FIG. 2A and 2B show the exposed wiring box of FIG. 1, in which FIG. 2A is a plan view and FIG. 2B is a cross-sectional view taken along line A-A of FIG. 2A and 2B show a wiring duct connected to the exposed wiring box of FIG. 1, in which FIG. 4 is a plan view illustrating a procedure for fixing the exposed wiring box of FIG. 1 and the wiring duct of FIG. 3 to a wall surface. FIG. 4(a) and (b) are cross-sectional views of FIG. 4(c), which are cross-sectional views of the wiring duct, and (c) and (d) are cross-sectional views of FIG. 4(d), which are cross-sectional views of the wiring duct. 2A and 2B show the exposed wiring box of FIG. 1 with a wiring device and a decorative plate attached thereto, where (a) and (c) are plan views, and (b) and (d) are cross-sectional views. 2 is a plan view showing a state in which a wiring duct is connected vertically to the exposed wiring box of FIG. 1 . FIG. 2 is a plan view showing a state in which a wiring duct is connected vertically to the exposed wiring box of FIG. 1 . 5 is a plan view illustrating a procedure for connecting a wiring duct to an exposed wiring box using a method different from that shown in FIG. 4 .

The exposed wiring box and wiring duct of an embodiment of the present invention will be described below with reference to the drawings. The exposed wiring box and wiring duct are installed on the wall surface after construction of the building.

In Figures 1 and 2, the exposed wiring box 1 is made of synthetic resin and has a long and narrow rectangular box shape, and includes a bottom wall 10 and a peripheral wall 20 standing upright from the bottom wall 10. An accommodating opening 30 is formed at the tip of the peripheral wall 20 to accommodate the rear end of a wiring device. The exposed wiring box 1 is designed so that wiring ducts 40 can be connected to the peripheral walls 20 on both the left and right sides. The exposed wiring box 1 may also be made of metal.

The bottom wall 10 is formed in a long and narrow rectangular plate shape, and is provided with two fixing portions 11 at the middle of the width direction, which are fixed to a wall surface 60 of a structure at a predetermined interval in the longitudinal direction. The fixing portions 11 are formed of elongated holes 12 that extend in the insertion direction of the wiring duct 40 into an insertion opening 23 (described later) of the peripheral wall 20, i.e., along the longitudinal direction of the bottom wall 10.

The peripheral wall 20 has an insertion opening 23 into which the end of the wiring duct 40 is inserted at the end of the narrower peripheral wall 20a of the four sides, i.e., the pair of opposing peripheral walls 20a, 20a on both the left and right sides in FIG. 2(a), facing the bottom wall 10. The insertion opening 23 is formed in a shape that almost matches the outer wall surface of the wiring duct 40, and the bottom wall 10 side penetrates to the outside. A plate-shaped cover member 24 that closes the insertion opening 23 is attached removably.

In the bottom wall 10, between each fixing portion 11 and the left and right peripheral walls 20a, abutment openings 13 are provided to allow the end 40a of the inserted wiring duct 40 to abut against the wall surface so that the end 40a of the wiring duct 40 can be inserted inside the inner surface 21 of the peripheral wall 20a. The abutment openings 13 are formed so as to communicate with the insertion openings 23 of the peripheral wall 20a and extend in a direction penetrating the left and right peripheral walls 20a in which the insertion openings 23 are provided.

As shown in FIG. 2(a), the long holes 12, 12 of the pair of fixing parts 11, 11 provided on the bottom wall 10 are formed so that the extension length L1 exceeds at least the plate thickness t of the peripheral wall 20a in which the insertion opening 23 is formed. Here, the extension length of the long hole 12 means the length by which the screw 50 attached in the long hole 12 can move relatively in the long hole 12 by sliding the exposed wiring box 1. Furthermore, the extension length L1 of the long hole 12 is greater than the extension length L2 of the abutment opening 13, which is based on the outer surface 22 of the peripheral wall 20a of the insertion opening 23. Here, the extension length of the abutment opening 13 means the length by which the end 40a of the wiring duct 40 inserted into the abutment opening 13 can enter the abutment opening 13, based on the outer surface 22 of the peripheral wall 20a. In this regard, the extension length L1 of the long hole 12 is determined based on the allowable insertion length of the wiring duct 40, but if the extension length L1 of the long hole 12 is determined based on the insertion opening 23, it can also be expressed as being greater than the height of the internal space of the insertion opening 23.

At the end of the bottom wall 10 side of the longitudinal middle part of the wider peripheral wall 20b, i.e., the pair of peripheral walls 20b, 20b that are perpendicular to and adjacent to the left and right peripheral walls 20a on both sides in FIG. 2(a) and face each other in the vertical direction, an insertion opening 25 is formed into which the end 40a of the wiring duct 40 can be inserted by removing the knockout formed in the peripheral wall 20b, as shown in FIG. 2(b). In addition, at both vertical sides of the longitudinal middle part of the bottom wall 10, abutment openings 14 are formed that communicate with the insertion openings 25 and allow the end 40a of the wiring duct 40 to abut against the wall surface 60 so that the end 40a of the wiring duct 40 can be inserted from the insertion opening 25 inside the inner surface of the peripheral wall 20b. These insertion openings 25 formed in the peripheral wall 20b and the abutment openings 14 in the bottom wall 10 constitute a spare connection part that is used as a spare depending on the wiring direction of the cable.

In addition, the bottom wall 10 is formed with a screw holder 15 that holds a mounting screw for attaching a wiring device mounting frame 71 that holds the wiring device 70. In addition, a groove 16 that holds a partition plate that divides the interior is formed on the inner wall surface at the longitudinal center position of the peripheral wall 20b, and by attaching the partition plate, the exposed wiring box 1 can be divided into left and right sections.

At both ends of the storage opening 30 of the exposed wiring box 1, bosses 31 are provided at the ends of the peripheral walls 20a on both sides facing the storage opening 30, and mounting holes 32 are formed in the bosses 31 into which mounting screws are screwed that pass through insertion holes at both ends of the wiring device mounting frame 71 that holds the wiring device 70. The mounting holes 32 in the bosses 31 are formed by embedding nuts in the bosses 31, or by forming screw holes directly in the bosses 31.

Next, the wiring duct 40 connected to the exposed wiring box 1 is composed of a long base 41, which has a cross section formed in a fixed rectangular frame shape and is fixed to the wall surface 60, and a long lid 42, which is attached to the base 41 from above to form a wiring path inside. The base 41 has a plate-shaped part 41a having a fixing part consisting of a screw hole (not shown) and side walls 41b standing on both sides of the plate-shaped part 41a, and is fixed to the wall surface 60. The lid 42 has a pair of side plate parts 42a, 42a having a fitted part 42b on the inside that fits with the fitting part 41c formed on each side wall 41b of the base 41, and a top plate part 42c connecting the side plate parts 42a, 42a, and is attached to the base 41 from above to form a wiring path for the cable 73 inside. These members are made of synthetic resin material. The wiring duct 40 can be fixed to the wall surface 60 by attaching double-sided adhesive tape to the base 41, or by fastening nails, screws 50, etc. to the base 41.

Next, a method for installing the exposed wiring box 1 and wiring duct 40 configured as described above on the front side of the wall surface 60 after construction of the building will be described. Here, a case where the exposed wiring box 1 and wiring duct 40 are arranged horizontally and installed on the wall surface 60 will be described.

First, as shown in FIG. 4(a), screws 50 are attached to each of the long holes 12 of the two fixing parts 11 of the exposed wiring box 1 to fix the exposed wiring box 1 in the correct position on the wall surface 60 of the structure. Before fixing the exposed wiring box 1, the cover member 24 provided on the right-side peripheral wall 20a, which is one of the insertion openings 23, is removed. Next, the screws 50 are loosened slightly to temporarily fix the exposed wiring box 1, and the exposed wiring box 1 is slid to the left as shown in FIG. 4(b). After the movement, each screw 50 is located at the right end of the long hole 12.

After the exposed wiring box 1 is moved to the left, a wall surface 60 exposed on the outer part of the right side peripheral wall 20a appears, and the wall surface 60 in that part becomes the end arrangement location 61 where the end 40a of the wiring duct 40 is planned to be arranged. Then, as shown in FIG. 4(c) and FIG. 5(a) and (b), the base 41 of the wiring duct 40 is arranged horizontally, and the end 41d is arranged at the end arrangement location 61 while abutting against the wall surface 60 and adhesively fixed with the double-sided adhesive tape previously attached to the base 41. At this time, the base 41 can be arranged from the front against the wall surface 60 without interfering with the exposed wiring box 1. Also, at this time, the position of the tip of the wiring duct 40 may be approximately coincident with the outer surface 22 of the right side peripheral wall 20a of the exposed wiring box 1, or may be slightly spaced to the right from the outer surface 22 of the peripheral wall 20a. The base 41 may be fixed to the wall surface 60 by driving nails, screws 50, etc. instead of double-sided adhesive tape.

Next, the cable 73 is wired inside the base 41 of the wiring duct 40, and further inserted through the insertion opening 23 of the exposed wiring box 1 and wired inside. After that, the cover 42 of the wiring duct 40 is fitted and attached from above the base 41, that is, from the front side against the wall surface 60. At this time, the cover 42 is attached by simply pressing it from above, with the fitting portions 41c on both sides elastically fitting into the fitted portions 42b on both sides of the cover 42.

Next, as shown in Figure 4 (d) and Figures 5 (c) and (d), the exposed wiring box 1 is slid to the right so that the end 40a of the wiring duct 40 is inserted through the insertion opening 23 and received inside the exposed wiring box 1, and the screws 50 that were temporarily fixed in the correct installation position are tightened to permanently fix the exposed wiring box 1 to the wall surface 60.

After the exposed wiring box 1 and the wiring duct 40 are fixed to the wall surface 60 in this way, the cable 73 and the wiring device 70 are connected as shown in Figures 6(a) and (b). Then, mounting screws are inserted into the insertion holes at both ends of the wiring device mounting frame 71 that holds the wiring device 70, and the wiring device 70 is attached to the exposed wiring box 1 via the wiring device mounting frame 71 by attaching it to the mounting holes 32 of the boss portions 31 on both sides of the exposed wiring box 1. Then, as shown in Figures 6(c) and (d), the decorative plate 72 is fitted and attached to the front side of the wiring device 70. As a result, the exposed wiring box 1 and the wiring duct 40 are fixed in an exposed state on the wall surface of the wall material after construction, and the installation work of the wiring device 70 is completed.

In the above, the exposed wiring box 1 and the wiring duct 40 are arranged and fixed horizontally, but when the wiring duct 40 is arranged vertically from above and connected to the exposed wiring box 1, as shown in FIG. 7(a), the exposed wiring box 1 is placed vertically and the screws 50 are attached and fixed to the wall surface 60 in the correct position, and then the screws 50 are loosened a little to move relatively inside the long holes 12, while the exposed wiring box 1 is slid downward as shown in FIG. 7(b). At this time, the exposed wiring box 1 descends under its own weight, so the screws 50 may be tightened quite loosely. In this state, the end arrangement portion 61 where the end 40a of the wiring duct 40 is to be arranged is exposed on the wall surface 60 above the exposed wiring box 1, so as shown in FIG. 7(b), the base 41 of the wiring duct 40 is placed vertically and the end 41d is placed at the end arrangement portion 61, the base 41 is fixed to the wall surface 60, and the cover 42 is attached.

After that, in the same manner as when the exposed wiring box 1 described above is installed horizontally, the exposed wiring box 1 is slid upward so that the end 40a of the wiring duct 40 is inserted through the insertion opening 23 and received inside the exposed wiring box 1, and the screws 50 are tightened to finally fix the exposed wiring box 1 to the wall surface 60 in the correct installation position.

In addition, when the wiring duct 40 is arranged vertically from below and connected to the exposed wiring box 1, as shown in FIG. 8(a), the exposed wiring box 1 is vertically elongated and the screws 50 are attached to the wall surface 60 in the normal position, and then the screws 50 are loosened slightly to move the exposed wiring box 1 relatively within the long holes 12, and the exposed wiring box 1 is slid upward as shown in FIG. 8(b). At this time, each screw 50 is located at the lower end of the long holes 12 and is in a provisionally fixed state, but if the screws 50 are not tightened properly, the exposed wiring box 1 will fall under its own weight, so the screws 50 are tightened a little more firmly so that the exposed wiring box 1 does not fall under its own weight. In this state, the end placement location 61 is exposed on the wall surface 60 below the exposed wiring box 1, so as shown in FIG. 8(b), the end 41d of the base 41 is placed at the end placement location 61 below the exposed wiring box 1, abutted against the wall surface 60, and fixed, and the lid 42 is attached.

Then, slide the exposed wiring box 1 downward to receive the end 40a of the wiring duct 40 inside the exposed wiring box 1, and tighten the screws 50 to permanently fix the exposed wiring box 1 to the wall surface 60 in the correct installation position.

Next, the operation of the exposed wiring box 1 of this embodiment will be described.
The exposed wiring box 1 is formed such that the length L1 of the long hole 12, which is the fixing portion 11, exceeds the plate thickness t of the peripheral wall 20a in which the insertion opening 23 is formed. Therefore, when the wiring duct 40 is connected to the exposed wiring box 1, the exposed wiring box 1 is slid to a temporary position in a state in which the screws 50 are temporarily fixed in the regular installation position in the long hole 12, so that the end arrangement portion 61 where the end 40a of the wiring duct 40 is arranged can be exposed on the wall surface 60 outside the peripheral wall 20a. Therefore, the wiring duct 40 can be arranged and fixed from the front against the wall surface 60 without interfering with the exposed wiring box 1. After the wiring duct 40 is installed, the exposed wiring box 1 is slid to the regular installation position, and the screws 50 are further tightened to permanently fix the exposed wiring box 1 to the wall surface 60.

As a result, when installing the wiring duct 40 on the wall surface 60, there is no need to insert the base 41 of the wiring duct 40 into the insertion opening 23 of the exposed wiring box 1 while being careful not to let the double-sided adhesive tape attached to the base 41 adhere to the wall surface 60 during installation, and the lid 42 of the wiring duct 40 can be fitted to the base 41 and attached without bending it and inserting it into the narrow gap between the insertion opening 23 of the exposed wiring box 1 and the base 41. As a result, the wiring duct 40 can be simply and easily installed on the wall surface 60 and connected to the exposed wiring box 1.

In addition, the length L1 of the long hole 12 is formed to be larger than the thickness t of the peripheral wall 20a in which the insertion opening 23 is formed, so that at least the tip of the wiring duct 40 is inserted further inward than the inner surface 21 of the peripheral wall 20a, and the entire thickness of the inner wall surface of the insertion opening 23 overlaps with the outer surface of the wiring duct 40, blocking the gap between the insertion opening 23 and the wiring duct 40. This improves the appearance of the connection between the exposed wiring box 1 and the wiring duct 40 and prevents dust and other foreign matter from entering the wiring duct 40 from the outside.

Furthermore, the bottom wall 10 of the exposed wiring box 1 is formed with an abutment opening 13 that allows the end 40a of the wiring duct 40 inserted into the insertion opening 23 to abut against the wall surface 60, and the length L1 of the long hole 12 is set to be greater than the length L2 of the abutment opening 13 that extends from the outer surface 22 of the peripheral wall 20a of the insertion opening 23. This increases the range over which the exposed wiring box 1 can be adjusted by sliding it, and also increases the degree of freedom in the position at which the screw 50 is driven into the long hole 12, thereby increasing the degree of freedom in the installation position of the exposed wiring box 1 on the wall surface 60.

In the above embodiment, in the method of installing the exposed wiring box 1 and the wiring duct 40 on the front side of the wall surface 60, when the exposed wiring box 1 is fixed in the correct position on the wall surface 60 by first driving the screws 50 into the long holes 12 of the exposed wiring box 1, the two screws 50 are driven into the two long holes 12 to attach the exposed wiring box 1 in a temporary fixed state. In contrast, as shown in FIG. 9, first, only the right screw 50 may be attached to temporarily fix the exposed wiring box 1, and in that state, the exposed wiring box 1 may be slid and moved. That is, first, as shown in FIG. 9(a), the right screw 50 is attached to the correct position of the right long hole 12. Next, as shown in FIG. 9(b), the exposed wiring box 1 is slid and moved to the left, and the end 41d of the base 41 of the wiring duct 40 is placed from the front at the end placement location 61 exposed outside the right peripheral wall 20a, as shown in FIG. 9(c).

When the exposed wiring box 1 is finally slid to the right to return it to its normal position and finally fixed, an additional screw 50 is attached to the left long hole 12 as shown in FIG. 9(d). In the previous embodiment, the additional left screw 50 is attached to the left side of the long hole 12 as shown in FIG. 4(a) because it is necessary to drive in two screws 50 before sliding the exposed wiring box 1 to the left. In the case of FIG. 9, however, the additional left screw 50 is attached to the right side of the long hole 12 as shown in FIG. 9(d). In this way, the two screws 50 are positioned on opposite sides of the long hole 12, so that even if the screws 50 loosen slightly, the exposed wiring box 1 is restricted from sliding to the left and right. This holds the exposed wiring box 1 in a fixed position.

In the case of Fig. 9, when only one screw 50 is fixed in the initial state shown in Fig. 9(a), if the screw is not tightened too much, the exposed wiring box 1 will tilt around the attachment position of the one right screw 50 due to the left-right weight balance and will rotate to a vertical position, so the screw 50 is tightened a little more firmly so that it does not rotate. Alternatively, in the state shown in Fig. 9(a), a second screw 50 can be attached to any position in the left long hole 12 with a loose tightening force so that the exposed wiring box 1 does not rotate under its own weight, and when the exposed wiring box 1 moves to the final position shown in Fig. 9(d), the screw 50 can be removed from the left long hole 12 and then re-driven into the same left long hole 12 in a position shifted to the right as shown in Fig. 9(d).

In the above embodiment, the length of the long hole 12 is large enough to allow the end 40a of the wiring duct 40 to be inserted into the abutment opening 13, but it is sufficient that it can be inserted at least up to the inner surface 21 of the peripheral wall 20a where the insertion opening 23 is provided.

In addition, in the installation procedure of the above embodiment, the wiring duct 40 is fixed to the wall surface 60 when the exposed wiring box 1 is in the temporary position, but this is not limited to the above. The exposed wiring box 1 may be moved from the temporary position to the regular position so that the end 40a of the wiring duct 40 is inserted into the exposed wiring box 1 through the insertion opening 23, and then the wiring duct 40 may be fixed to the wall surface 60 using nails, screws, etc. Furthermore, the exposed wiring box 1 may be fixed in the regular position and then fixed to the wall surface 60.

Furthermore, the cover 42 of the wiring duct 40 is attached to the base 41 after the exposed wiring box 1 is in a temporary position and the end 41d of the base 41 of the wiring duct 40 is positioned at the end position 61 of the wiring duct 40, but this does not prevent the exposed wiring box 1 from being slid to the correct position and then attached to the base 41.

In the procedure of the above embodiment, the cable 73 is wired into the base 41 and exposed wiring box 1 after the exposed wiring box 1 is in a temporary position and the end 41d of the base 41 is positioned, and the cover 42 of the wiring duct 40 is attached to the base 41, but the cable 73 may be wired after the base 41 is fixed to the wall surface 60 and the exposed wiring box 1 is slid from the temporary position to the correct position and before the cover 42 is attached to the base 41.

In addition, in the above embodiment, the fixing portion 11 is provided in two at a predetermined interval in the longitudinal direction in the middle of the width direction of the bottom wall 10, and each is formed by a long hole 12, but this is not limited to the above when implementing the present invention. As long as the exposed wiring box 1 can slide along the longitudinal direction of the wiring duct 40 in the temporarily fixed state, one or three or more fixing portions 11 may be provided, and the position of the fixing portion 11 on the bottom wall 10 does not matter. Furthermore, the shape of the fixing portion 11 is not limited to the long hole 12. When the fixing portion 11 is formed by one long hole 12, two screws 50 are usually attached into one long hole 12, so the long hole 12 becomes quite long.

In the above embodiment, the exposed wiring box 1 is formed in a long and narrow rectangular box shape, but it is not limited to this shape and may be a square box shape, a polygonal box shape, a roughly circular box shape, a roughly elliptical box shape, or the like. The wiring duct 40 is also not limited to the above shape.

Furthermore, the exposed wiring box of the present invention is not limited to being installed on the wall surface of a building after construction, but can be applied to various wiring boxes that are installed in an exposed state and improve the appearance of the connection with the wiring duct.

REFERENCE SIGNS LIST 1 exposed wiring box 40 wiring duct 10 bottom wall 40a end 11 fixing portion 50 screw 12 long hole (fixing portion) 60 wall surface 13 abutment opening 61 end arrangement location 20, 20a, 20b peripheral wall 70 wiring device 21 inner surface of peripheral wall 73 cable 22 outer surface of peripheral wall L1 extension length of long hole 23 insertion opening L2 extension length of abutment opening 30 accommodation opening t plate thickness of peripheral wall

Claims (3)

An exposed wiring box in which wiring equipment is installed on the front surface,
The device has a bottom wall having a fixing portion to be fixed to a structure, and a peripheral wall extending upright from the bottom wall,
An insertion opening is formed in the peripheral wall, into which an end of a wiring duct that configures an arrangement path for a cable connected to the wiring device is inserted,
the fixing portion is a long hole extending along an insertion direction of the wiring duct into the insertion opening,
a contact opening is formed in the bottom wall, the contact opening communicating with the insertion opening and extending in a direction penetrating the peripheral wall in which the insertion opening is formed, so that the end of the inserted wiring duct can be contacted with the structure so that the end of the wiring duct can be inserted inside the inner surface of the peripheral wall;
An exposed wiring box, characterized in that the length of extension of the long hole is greater than the length of extension of the abutment opening from the outer surface of the peripheral wall on which the insertion opening is formed. An exposed wiring box in which wiring equipment is installed on the front surface,
The container is formed in an elongated rectangular box shape and has a bottom wall having a fixing portion to be fixed to a structure, and a peripheral wall extending upright from the bottom wall,
a housing opening capable of housing a rear end side of the wiring device in a direction in which a rectangular long side side of the wiring device facing forward is aligned with a longitudinal direction of the exposed wiring box is formed on a tip side of the peripheral wall;
An insertion opening is formed in a pair of opposing peripheral walls on both sides in the longitudinal direction of the peripheral walls, into which an end of a wiring duct that configures an arrangement path for a cable connected to the wiring device is inserted;
the fixing portion is a long hole extending along the longitudinal direction in a direction in which the wiring duct is inserted into the insertion opening,
An exposed wiring box characterized in that the length of the long hole exceeds the thickness of the surrounding wall in which the insertion opening is formed, and is large enough to simultaneously accommodate two screws that are driven into the structure through one long hole . an exposed wiring box having a bottom wall having a fixing portion fixed to a structure, and a peripheral wall erected from the bottom wall, wherein an insertion opening is formed in the peripheral wall into which an end of a wiring duct forming an internal arrangement path for a cable connected to a wiring device installed on a front side is inserted, and the fixing portion is an elongated hole extending in a direction in which the wiring duct is inserted into the insertion opening with a size exceeding a plate thickness of the peripheral wall in which the insertion opening of the wiring duct is formed , the exposed wiring box being in a temporary fixed state in which screws penetrating the fixing portion are lightly driven into the structure so that the exposed wiring box can slide between a normal installation position and a temporary position moved in the insertion direction into the insertion opening by more than the insertion length of the wiring duct connected to the insertion opening,
placing the exposed wiring box in the temporary position;
an end of the wiring duct is disposed at the end disposition location of the wiring duct exposed thereby;
The exposed wiring box is slid to the normal installation position to receive the end of the wiring duct through the insertion opening;
A method for installing an exposed wiring box and a wiring duct, comprising the steps of: tightening the screws to finally fix the exposed wiring box in the correct installation position to the structure.

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