Wiring fixture attachment body

Abstract

To provide a wiring accessory attachment that allows easy change to a pitch of a pair of screw holes.SOLUTION: In a box cover 10, a pair of second screw holes 25b is provided in screw input members 25 assembled to a main body 11 so as to enable change of their position along a second direction Y. Each screw input member 25 can be changed in position within a range of a first movement limit position and a second movement limit position P2. The box cover 10 includes a screw 30 and an inner side surface of a fitting concave part 18, which restrict movement of the screw member 25 at the first movement limit position, and includes a contact piece 26 and a step surface that limit movement of the screw member 25 at the second movement limit position P2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wiring device attachment body in which a pair of screw holes are arranged opposite to a main body with a space therebetween.

Background Art

[0002] To install a wiring device such as an outlet on a wall of a building, a bottomed rectangular box-shaped wiring box and a frame-shaped box cover attached to the wiring box are used. The box cover is attached to the opening side of the wiring box, and the wiring box is embedded in a concrete wall as a wall or installed in a hollow wall. A wiring device frame or a wiring device holding the wiring device is directly attached to the box cover, and the wiring device is installed on the wall.

[0003] A rectangular or circular space is opened at the center of the box cover. The box cover is provided with screw holes at opposite positions on the peripheral edge of the space. The pitch of the pair of screw holes is set corresponding to the size and shape of the wiring device frame or the wiring device attached to the box cover.

[0004] In addition, as a box cover, a box cover having a plurality of fixing portions each composed of a pair of screw holes has been proposed (see, for example, Patent Document 1). The box cover of Patent Document 1 includes a first fixing portion composed of a pair of first fixing holes as screw holes and a second fixing portion composed of a pair of second fixing holes as screw holes at the peripheral edge of the space of the box cover. The first fixing portion and the second fixing portion are arranged such that a virtual line connecting the pair of first fixing holes and a virtual line connecting the pair of second fixing holes are orthogonal to each other. Further, the pitch between the first fixing holes in the first fixing portion is different from the pitch between the second fixing holes in the second fixing portion. Therefore, a wiring device frame or a wiring device having a different pitch between the fixing holes can be fixed to the box cover when the first fixing portion is used and when the second fixing portion is used.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-254495 [Summary of the Invention] [Problems to be Solved by the Invention]

[0006] However, in the case of the box cover of Patent Document 1, for example, when fixing a wiring device to the box cover with fixing holes arranged vertically, depending on whether the first fixing part or the second fixing part is used according to the pitch, it is necessary to change the mounting orientation of the box cover with respect to the wiring box, and it is troublesome to consider the mounting orientation of the box cover. In the unlikely event that the mounting orientation of the box cover is incorrect, it is necessary to remove the box cover from the wiring box, change the mounting orientation of the box cover, and then reattach the box cover to the wiring box, which is very troublesome.

[0007] An object of the present invention is to provide a wiring device attachment body capable of easily changing the pitch of a pair of screw holes. [Means for Solving the Problems]

[0008] A wiring device attachment body for solving the above problems includes a main body surrounding a space where a wiring device is disposed, and a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed. The pair of screw holes are disposed opposite to the main body so as to sandwich the space. When the extending direction of a straight line connecting the pair of screw holes is defined as the opposing direction and the interval between the pair of screw holes along the opposing direction is defined as the pitch, at least one of the pair of screw holes is provided in a screwed member assembled to the main body and the pitch can be changed. The screwed member includes positioning means for positioning the screwed member so as to maintain the changed pitch. This is the gist.

[0009] Regarding the wiring fixture attachment body, the screwed member can be repositioned within the range of two defined movement limit positions, and has movement restricting means for restricting the movement of the screwed member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided on the screwed member and a body-side abutting portion provided on the main body. The movement of the screwed member is restricted by the abutting of the member-side abutting portion and the body-side abutting portion. The screwed member is movable steplessly within at least a partial range between the movement limit positions. The positioning means is a screw screwed into the screwed member, and by screwing the screw into the screwed member, the screwed member may be positioned immovably within the range where it is movable steplessly.

[0010] Regarding the wiring fixture attachment body, the pair of screw holes may be provided in the screwed members having the same configuration respectively. The wiring fixture attachment body may include a space reduction portion that protrudes into the space and narrows the space.

Advantages of the Invention

[0011] According to the present invention, the pitch of the pair of screw holes can be easily changed.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Mode for Carrying Out the Invention

[0013] Hereinafter, an embodiment in which the wiring device attachment body is embodied as a box cover will be described with reference to FIGS. 1 to 14. As shown in FIG. 1 or FIG. 2, the box cover 10 as the wiring device attachment body is attached to the opening side of the bottomed rectangular box-shaped wiring box B and is for installing the wiring device 23 in the wiring box B. The wiring device can be installed in the wiring box B, and any device may be used as long as it is a device to which the cable wired in the wiring box B is connected, such as a socket, a switch, a card reader, an intercom, a fire alarm, etc.

[0014] The box cover 10 includes a plate-shaped main body 11 that surrounds a space 11c in which the wiring device 23 is disposed. The main body 11 has a first surface 11a on one side in the plate thickness direction and a second surface 11b on the other side in the plate thickness direction. The first surface 11a and the second surface 11b are parallel to each other. Note that the plate thickness direction of the main body 11 is the direction in which a straight line connecting the first surface 11a and the second surface 11b extends. When the main body 11 is viewed from the front in the front view of the first surface 11a or the second surface 11b, the main body 11 has a substantially rectangular frame shape, and the box cover 10 has a substantially rectangular frame shape. The main body 11 has a pair of opposing first side edges 11d and second side edges 11e that connect one end and the other end of the pair of first side edges 11d to each other. In the front view of the box cover 10, the first side edges 11d and the second side edges 11e are linear. Also, in the front view of the box cover 10, the adjacent first side edge 11d and the second side edge 11e are orthogonal. In the following description, the direction in which the pair of first side edges 11d oppose each other is defined as the first direction X, and the direction in which the pair of second side edges 11e oppose each other is defined as the second direction Y. The first direction X and the second direction Y are orthogonal.

[0015] In the front view of the box cover 10, a space 11c opens at the center of the box cover 10. The space 11c penetrates the box cover 10 in the plate thickness direction. In the front view of the box cover 10, the inner peripheral edge of the main body 11 has an elongated shape.

[0016] The box cover 10 includes a rectangular frame-shaped standing portion 12 that surrounds the space 11c on the first surface 11a. The standing portion 12 protrudes from the first surface 11a along the plate thickness direction of the box cover 10. The standing portion 12 protrudes from the first surface 11a so as to have a predetermined thickness. Note that the predetermined thickness of the standing portion 12 is a dimension into which a plate-shaped screwing member 25 described later can be inserted.

[0017] The standing part 12 includes a pair of side wall parts 13 facing the first direction X, and a pair of mounting wall parts 14 connecting one end and the other end in the longitudinal direction of the pair of side wall parts 13. In the front view of the box cover 10, each side wall part 13 is parallel to the first side edge 11d, and the longitudinal direction of the side wall part 13 extends linearly in the second direction Y. In the front view of the box cover 10, each mounting wall part 14 is in an arch shape bulging toward each second side edge 11e.

[0018] As shown in FIG. 3 or FIG. 4, in the front view of the box cover 10, each side wall part 13 has an inner surface 13a facing the space 11c and an outer surface 13b sandwiching the side wall part 13 with the inner surface 13a in the first direction X. In the front view of the box cover 10, each mounting wall part 14 has an inner surface 14a facing the space 11c and an outer surface 14b sandwiching the mounting wall part 14 with the inner surface 14a in the second direction Y. In the front view of the box cover 10, the inner surface 13a and the outer surface 13b of each side wall part 13 are linear. In the front view of the box cover 10, the inner surface 14a of each mounting wall part 14 has a shape in which both ends in the first direction X are recessed toward the second side edge 11e, and the outer surface 14b of each mounting wall part 14 has a shape bulging toward the second side edge 11e.

[0019] The mounting wall part 14 has a tip surface 14c at the tip in the protruding direction from the first surface 11a. The box cover 10 includes a contact rib 17 protruding from the standing part 12 along the plate thickness direction. The contact rib 17 surrounds the space 11c. Further, the contact rib 17 has a flat contact surface 17a at the tip in the protruding direction from the mounting wall part 14.

[0020] The box cover 10 has guide holes 15 in each mounting wall portion 14. The guide holes 15 are located at the center of the mounting wall portion 14 in the first direction X in a front view of the box cover 10. In the front view of the box cover 10, the guide holes 15 extend straight along the second direction Y from the inner surface 14a of the mounting wall portion 14 toward the second side edge 11e. The guide holes 15 penetrate the mounting wall portion 14 along the thickness direction of the box cover 10. The guide holes 15 open at the tip surface 14c of the mounting wall portion 14 and the contact rib 17 on the first surface 11a side of the box cover 10, and open at the second surface 11b on the second surface 11b side.

[0021] The box cover 10 includes a mounting recess 18 surrounding the guide holes 15. On the first surface 11a side of the box cover 10, the mounting recess 18 is recessed from the tip surface 14c of the mounting wall portion 14 and the contact surface 17a of the contact rib 17. On the second surface 11b side of the box cover 10, the mounting recess 18 is recessed from the second surface 11b. In a front view of the box cover 10, the mounting recess 18 is U-shaped.

[0022] The box cover 10 has a flat support surface 18a at the tip where the mounting recess 18 is recessed. On the first surface 11a side of the box cover 10, the support surface 18a is provided at a position recessed more than the tip surface 14c of the mounting wall portion 14 and the contact surface 17a of the contact rib 17. On the second surface 11b side of the box cover 10, it is provided at a position recessed more than the second surface 11b. In a front view of the box cover 10, the support surface 18a is U-shaped surrounding the guide holes 15.

[0023] The dimension of the guide hole 15 in the first direction X is slightly larger than the diameter of the shaft portion 31 of the screw 30 described later. Also, the dimension of the mounting recess 18 in the first direction X is slightly larger than the diameter of the head portion 32 of the screw 30. Therefore, the shaft portion 31 of the screw 30 can be inserted into the guide hole 15, and the head portion 32 of the screw 30 can be accommodated inside the mounting recess 18.

[0024] As shown in FIG. 2 or FIG. 5, the box cover 10 has an insertion groove 19 in the mounting wall portion 14. The insertion groove 19 opens toward the space 11c at the inner surface 14a of the mounting wall portion 14 and the inner surface 13a of the side wall portion 13, and also opens to the outside at the outer surface 14b of the mounting wall portion 14. The opening width of the insertion groove 19 along the plate thickness direction of the box cover 10 is slightly larger than the plate thickness of the screwing member 25 described later. Further, the opening width of the insertion groove 19 along the first direction X is slightly larger than the maximum dimension of the screwing member 25 in the first direction X.

[0025] The opening width of the insertion groove 19 in the first direction X is constant from the outer surface 14b to immediately before reaching the inner surface 14a of the mounting wall portion 14 along the second direction Y. The insertion groove 19 is also formed in the inner surface 13a of each side wall portion 13. A stepped surface 13d that is recessed from the inner surface 13a toward the outer surface 13b is formed in each side wall portion 13.

[0026] Next, the screwing member 25 inserted into the insertion groove 19 will be described. The screwing member 25 is made of a thin metal plate. In a front view of the screwing member 25 seen from the plate thickness direction, the screwing member 25 has a T shape. The screwing member 25 includes a first screw hole 25a into which the shaft portion 31 of the above-described screw 30 is screwed. The first screw hole 25a is a female screw. Further, the screwing member 25 includes a second screw hole 25b. The shaft portion 41 of a mounting screw 40 for attaching the wiring device 23 to the box cover 10 is screwed into the second screw hole 25b. The second screw hole 25b is a female screw. In the screwing member 25, the direction in which the first screw hole 25a and the second screw hole 25b are arranged is defined as the juxtaposition direction H. The direction along both surfaces in the plate thickness direction of the screwing member 25 and perpendicular to the juxtaposition direction H is defined as the width direction F.

[0027] The screwing member 25 includes contact pieces 26 at both end sides in the width direction F. Further, the screwing member 25 includes a screw hole forming portion 27 that protrudes more than both contact pieces 26 in the juxtaposition direction H. The second screw hole 25b is provided in the screw hole forming portion 27.

[0028] The maximum dimension of the screw member 25 in the coaxial direction H is substantially the same as the maximum dimension between the outer surface 14b and the inner surface 14a of the mounting wall portion 14 in the second direction Y. Further, the maximum dimension of the screw member 25 in the width direction F is slightly smaller than the opening width of the insertion groove 19 in the first direction X.

[0029] As shown in FIG. 7 or FIG. 9, the screw member 25 is inserted into the insertion groove 19 from the outer surface 14b side of the mounting wall portion 14. The screw member 25 is inserted into the insertion groove 19 from the screw hole forming portion 27. The screw member 25 is accommodated in the insertion groove 19 so as to be movable in the second direction Y. On the other hand, both end edges of the screw member 25 in the width direction F are slightly separated from the inner end surface of the insertion groove 19 in the first direction X. For this reason, the movement of the screw member 25 in the first direction X is restricted within the insertion groove 19.

[0030] As shown in FIG. 3, the first screw hole 25a of the screw member 25 is exposed to the outside of the mounting wall portion 14 from the guide hole 15 of the mounting wall portion 14. As shown in FIG. 6 or FIG. 7, the shaft portion 31 of the screw 30 penetrating through the guide hole 15 is screwed into the first screw hole 25a of the screw member 25, and the screw member 25 and the screw 30 are integrated.

[0031] When the head portion 32 of the screw 30 screwed into the first screw hole 25a abuts against the inner surface of the mounting recess 18, further movement of the screw member 25 along the second direction Y is restricted, and the screw member 25 is restricted from coming out from the outer surface 14b side of the insertion groove 19. The position where the movement of the screw member 25 is restricted by the contact between the screw 30 and the main body 11 is defined as the first movement limit position P1 of the screw member 25. Therefore, each screw member 25 is restricted from moving from the first movement limit position P1 to the outer surface 14b side of the mounting wall portion 14 by the contact between the head portion 32 of the screw 30 and the inner surface of the mounting recess 18. In the present embodiment, the screw 30 integrated with the screw member 25 constitutes a member-side contact portion as a movement restricting means, and the inner surface of the mounting recess 18 of the main body 11 constitutes a main body-side contact portion as a movement restricting means provided in the main body 11.

[0032] When the screwing member 25 is at the first movement limit position P1, the tip 27a of the screw hole forming portion 27 in the juxtaposed direction H of the screwing member 25 is flush with the inner surface 14a of the mounting wall portion 14. At the first movement limit position P1, the second screw hole 25b of the screwing member 25 is exposed to the outside of the box cover 10 from a position close to the inner surface 14a of the mounting wall portion 14 in the guide hole 15.

[0033] Then, with the screwing member 25 in the state at the first movement limit position P1, by pressing the head 32 of the screw 30 against the support surface 18a of the mounting recess 18, the screwing member 25 can be positioned so as not to move at the first movement limit position P1. Therefore, the screw 30 constitutes positioning means for positioning the screwing member 25 so as not to move.

[0034] As shown in FIG. 9, the contact piece 26 on one end side in the width direction F of the screwing member 25 can contact the stepped surface 13d of one side wall portion 13, and the contact piece 26 on the other end side in the width direction F can contact the stepped surface 13d of the other side wall portion 13. And when each contact piece 26 of the screwing member 25 contacts each stepped surface 13d, the movement of the screwing member 25 toward the space 11c from the contact position is restricted.

[0035] When the pair of contact pieces 26 contact the stepped surface 13d, the movement of the screwing member 25 toward the inner surface 14a of the mounting wall portion 14 is restricted, and the screwing member 25 is restricted from coming out from the inner surface 14a side of the insertion groove 19. The position where the contact piece 26 contacts the stepped surface 13d and the movement of the screwing member 25 is restricted is defined as the second movement limit position P2 of the screwing member 25. Therefore, each screwing member 25 is restricted from moving from the second movement limit position P2 by the contact between the contact piece 26 and the stepped surface 13d. In the present embodiment, the contact piece 26 of the screwing member 25 constitutes a member-side contact portion as a movement restricting means provided in the screwing member 25, and the stepped surface 13d constitutes a main body-side contact portion as a movement restricting means provided in the main body 11.

[0036] As shown in FIG. 8 or FIG. 9, when the screwing member 25 is at the second movement limit position P2, the tip 27a of the screw hole forming portion 27 protrudes from the inner surface 14a of the mounting wall portion 14. At the second movement limit position P2, the second screw hole 25b of the screwing member 25 is located at a position protruding into the space 11c from the inner surface 14a of the mounting wall portion 14. Further, at the second movement limit position P2, the first screw hole 25a of the screwing member 25 is located at a position close to the inner surface 14a of the mounting wall portion 14 among the guide holes 15. Then, with the screwing member 25 at the second movement limit position P2, by pressing the head 32 of the screw 30 against the support surface 18a of the mounting recess 18, the screwing member 25 can be positioned so as not to be movable at the second movement limit position P2. The screw 30 constitutes positioning means for positioning the screwing member 25 so as not to be movable.

[0037] Therefore, in the box cover 10, each screwing member 25 is assembled to the main body 11 so that its position can be changed between the first movement limit position P1 and the second movement limit position P2. Further, each screwing member 25 can change its position between two predetermined movement limit positions and is movable steplessly between the first movement limit position P1 and the second movement limit position P2. That is, the screwing member 25 can change its position within the range of the two predetermined first movement limit position P1 and second movement limit position P2.

[0038] The insertion groove 19 is provided in the mounting wall portion 14 facing the second direction Y, and the screwing member 25 is inserted into the insertion groove 19 of each mounting wall portion 14. Since the second screw holes 25b are provided in the respective insertion grooves 19, the pair of second screw holes 25b are arranged to face the main body 11 so as to sandwich the space 11c of the box cover 10. The second direction Y is the facing direction in which a straight line connecting the pair of second screw holes 25b extends.

[0039] Also, at the second movement limit position P2, the screw hole forming portion 27 and the contact piece 26 of the screw-in member 25 project into the space 11c from the inner surface 14a of the mounting wall portion 14. For this reason, in a front view of the box cover 10, the space 11c is reduced by the screw-in member 25 protruding from the inner surface 14a of the mounting wall portion 14. Therefore, the screw-in member 25 itself functions as a space reducing member, and a part of the screw hole forming portion 27 and the contact piece 26 in the screw-in member 25 functions as a space reducing portion.

[0040] Taking the interval between a pair of second screw holes 25b along the second direction Y as the pitch. In a state where the pair of screw-in members 25 are respectively located at the first movement limit position P1, the pitch of the pair of second screw holes 25b is set to 60 mm. Also, in a state where the pair of screw-in members 25 are respectively located at the second movement limit position P2, the pitch of the pair of second screw holes 25b is set to 40 mm.

[0041] Also, each screw-in member 25 assumes an intermediate position at an intermediate position between the first movement limit position P1 and the second movement limit position P2. At the intermediate position, the tip 27a of the screw hole forming portion 27 of the screw-in member 25 projects from the inner surface 14a of the mounting wall portion 14 and is located closer to the inner surface 14a than the second movement limit position P2. At the intermediate position, the second screw hole 25b of the screw-in member 25 projects into the space 11c from the inner surface 14a of the mounting wall portion 14 and is located closer to the inner surface 14a than the second movement limit position P2. Also, at the intermediate position, the first screw hole 25a of the screw-in member 25 is at an intermediate position between the inner surface 14a and the outer surface 14b of the mounting wall portion 14 in the guide hole 15. In a state where the pair of screw-in members 25 are respectively positioned at the intermediate position, the pitch between the pair of second screw holes 25b is set to 50 mm.

[0042] Therefore, a pair of screwing members 25 are assembled to the main body 11 so that the position of the second screw hole 25b can be changed to three types of set pitches. That is, a pair of second screw holes 25b are provided in the screwing member 25 assembled to the main body 11 and the pitch can be changed. Further, by positioning the screwing member 25 immovably with a screw 30 at the first movement limit position P1, the second movement limit position P2, or the intermediate position, each pitch is maintained.

[0043] Also, even at the intermediate position, the screw hole forming portion 27 and the contact piece 26 of the screwing member 25 project into the space 11c from the inner surface 14a of the mounting wall portion 14. For this reason, in a front view of the box cover 10, the space 11c is reduced by the screwing member 25 protruding from the inner surface 14a of the mounting wall portion 14. Therefore, the screwing member 25 itself functions as a space reducing member, and a part of the screw hole forming portion 27 and the contact piece 26 in the screwing member 25 functions as a space reducing portion.

[0044] As shown in FIG. 4, the box cover 10 includes an indicating portion 21 at a position adjacent to the guide hole 15 in the second surface 11b. The indicating portion 21 is provided adjacent to the mounting recess 18 along the first direction X. The indicating portion 21 is a plurality of scales provided in the second direction Y. The indicating portion 21 indicates positions for positioning the screwing member 25 at the first movement limit position P1, the intermediate position, and the second movement limit position P2. The indicating portion 21 includes a first movement limit position mark 21a, an intermediate position mark 21b, and a second movement limit position mark 21c. By aligning the central axis of the screw 30 with each of the marks 21a to 21c and positioning the screwing member 25 with the screw 30, the screwing member 25 can be positioned at the first movement limit position P1, the second movement limit position P2, or the intermediate position, and the pitch of the second screw hole 25b at each of the positions P1 and P2 can be maintained.

[0045] The box cover 10 is provided with cover mounting holes 11g at the four corners. The cover mounting holes 11g penetrate the box cover 10 in the plate thickness direction. Next, the wiring box B will be described.

[0046] As shown in Fig. 1, the wiring box B is a rectangular box with a bottom. A pair of opposing corners of the wiring box B are provided with bosses Ba that open toward the outside of the wiring box B. A female screw is formed in the bosses Ba.

[0047] Next, the wiring apparatus frame 24 that holds the wiring apparatus 23 in order to attach the wiring apparatus 23 to the box cover 10 will be described. The wiring apparatus frame 24 is made of synthetic resin or metal and has a rectangular plate shape. The wiring apparatus frame 24 can attach the wiring apparatus 23 to its center. The wiring apparatus frame 24 also has mounting holes 24a at both ends in the longitudinal direction.

[0048] The wiring apparatus frame 24 is available in a variety of sizes, with the pitch between the center points of the pair of mounting holes 24a being 40 mm, 50 mm, and 60 mm. The wiring apparatus 23 is attached to the box cover 10 via the wiring apparatus frame 24 by screwing the mounting screw 40 that passes through the mounting hole 24a into the second screw hole 25b of the box cover 10.

[0049] Next, a method of using the box cover 10 and its function will be described. First, a case where a wiring unit frame 24 having a pair of mounting holes 24a with a pitch of 60 mm is used will be described.

[0050] First, in each screw-in member 25, the central axis of the screw 30 is aligned with the first movement limit position mark 21a of the indicator 21, and as shown in Fig. 6 or 7, the screw 30 is further screwed into the first screw hole 25a while the head 32 is pressed against the support surface 18a of the mounting recess 18. Then, each screw-in member 25 is positioned so as to be immovable at the first movement limit position P1, and the pitch of the pair of second screw holes 25b is set to 60 mm.

[0051] As shown in FIG. 10, a mounting screw 28 that passes through the cover mounting hole 11g of the box cover 10 is screwed into the boss portion Ba of the wiring box B to attach the box cover 10 to the wiring box B. In the present embodiment, the box cover 10 is attached to the wiring box B in a state where the first surface 11a of the box cover 10 faces the inside of the wiring box B and the second surface 11b is exposed to the outside. In a state where the box cover 10 is attached to the wiring box B, the space 11c of the box cover 10 is not reduced by the screwing member 25.

[0052] Next, a pair of gypsum boards Wa are erected to construct the hollow wall W, and the wiring box B is supported in the gypsum board Wa by a support means (not shown) so that the entire second surface 11b of the box cover 10 is in close contact with the back surface of one of the gypsum boards Wa.

[0053] Next, in one of the gypsum boards Wa located on the wall surface side of the hollow wall W, a cutting tool such as a saw (not shown) is moved along the space 11c of the box cover 10 to cut out the gypsum board Wa. At this time, the cutting tool is moved along the inner surface 13a with respect to the pair of side wall portions 13, and is moved so as to linearly connect the recessed portions in the second direction Y of the inner surface 14a with respect to the pair of mounting wall portions 14 in the first direction X. By doing so, as shown in FIG. 11, a pair of second screw holes 25b of the box cover 10 are exposed on the wall surface side. As a result, a through hole Wb is formed in the gypsum board Wa, and the space 11c of the box cover 10 faces the through hole Wb, and a pair of second screw holes 25b are exposed on the wall surface side through the through hole Wb.

[0054] 12, the wiring apparatus frame 24 holding the wiring apparatus 23 is brought into contact with the wall surface of the plaster board Wa, and the mounting screws 40 inserted into the mounting holes 24a of the wiring apparatus frame 24 are threaded through the through holes Wb into the second screw holes 25b of the box cover 10. At this time, since the pitch of the pair of mounting holes 24a of the wiring apparatus frame 24 is set to 60 mm and the pitch of the pair of second screw holes 25b of the box cover 10 is also set to 60 mm, the wiring apparatus frame 24 is quickly fixed to the box cover 10. A cable K wired in the wiring box B is connected to the wiring apparatus 23.

[0055] Next, a case where a wiring unit frame 24 having a pair of mounting holes 24a with a pitch of 40 mm is used will be described. First, in each screw-in member 25, the central axis of the screw 30 is aligned with the second movement limit position mark 21c of the indicator 21, and as shown in Fig. 8 or 9, the screw 30 is further screwed into the first screw hole 25a while the head 32 is pressed against the support surface 18a of the mounting recess 18. Then, each screw-in member 25 is positioned so as to be immovable at the second movement limit position P2, and the pitch of the pair of second screw holes 25b is set to 40 mm.

[0056] Furthermore, as shown in FIG. 13, since each screw member 25 is located at the second movement limit position P2, each screw member 25 protrudes into the space 11c of the box cover 10, narrowing the space 11c.

[0057] The mounting screw 28 passing through the cover mounting hole 11g of the box cover 10 is screwed into the boss portion Ba of the wiring box B to mount the box cover 10 to the wiring box B. In this embodiment, the box cover 10 is mounted to the wiring box B with the first surface 11a of the box cover 10 facing inside the wiring box B and the second surface 11b exposed to the outside.

[0058] Next, as shown in FIG. 14, in the same manner as above, a pair of gypsum boards Wa are erected, and a wiring box B is supported within the gypsum board Wa. Then, in one of the gypsum boards Wa located on the wall surface side of the hollow wall W, a cutting tool such as a saw is moved along the space 11c of the box cover 10 to cut out the gypsum board Wa. At this time, the cutting tool is moved along the inner surface 13a of the pair of side wall portions 13, and is moved so as to connect the pair of contact pieces 26 of the screwing member 25 protruding from the inner surface 14a of the mounting wall portion 14 in the first direction X. By doing so, as shown in FIG. 13, a through hole Wb is formed in the gypsum board Wa, and the space 11c of the box cover 10 faces the through hole Wb, and the pair of second screw holes 25b are exposed to the wall surface side through the through hole Wb.

[0059] At this time, since the screwing members 25 of the respective screwing members 25 protrude into the space 11c, the through hole Wb can be made smaller compared to the case where the screwing member 25 is located at the first movement limit position P1. Subsequently, as shown in FIG. 14, mounting screws 40 inserted through the respective mounting holes 24a of the wiring fixture frame 24 holding the wiring fixture 23 are screwed into the second screw holes 25b of the box cover 10. At this time, since the pitch of the pair of mounting holes 24a of the wiring fixture frame 24 is set to 40 mm and the pitch of the pair of second screw holes 25b of the box cover 10 is also set to 40 mm, the wiring fixture frame 24 is quickly fixed to the box cover 10.

[0060] According to the above embodiment, the following effects can be obtained. (1) The screwing member 25 of the box cover 10 is configured to be movable in the second direction Y. Further, the contact between the screw 30 integral with the screwing member 25 and the box cover 10, and the contact between the contact piece 26 integral with the screwing member 25 and the box cover 10 can restrict the movement of the screwing member 25 in the direction of coming out from the first movement limit position P1 or the second movement limit position P2. Therefore, while restricting the removal of the screwing member 25 from the box cover 10, the position of the second screw hole 25b provided in the screwing member 25 can be changed, and the pitch of the pair of second screw holes 25b can be adjusted. Thus, the position of the second screw hole 25b can be changed without changing the mounting orientation of the box cover 10 with respect to the wiring box B, etc.

[0061] (2) The screwing member 25 is movable steplessly in the second direction Y between the position where the screw 30 contacts the box cover 10 and the position where the contact piece 26 contacts the stepped surface 13d. Therefore, by adjusting the position of the screwing member 25 along the second direction Y, the position of the second screw hole 25b can be arranged at a position suitable for the attachment of the wiring fixture frame 24.

[0062] (3) By screwing the screw 30 into the first screw hole 25a and pressing the head 32 against the support surface 18a of the mounting recess 18, the screwing member 25 can be positioned so as not to move relative to the box cover 10. Therefore, the second screw hole 25b can be positioned at the position where the screwing member 25 is positioned, and the displacement of the second screw hole 25b can be suppressed. As a result, the screwing operation of the mounting screw 40 into the second screw hole 25b becomes easy.

[0063] (4) When the screwing member 25 is positioned at the second movement limit position P2 or the intermediate position, the screwing member 25 projects into the space 11c, and the space 11c is narrowed. Then, by forming a through hole Wb in the gypsum board Wa along the cutting tool on the screwing member 25, a through hole Wb can be formed in accordance with the space 11c reduced by the screwing member 25.

[0064] (5) An instruction portion 21 is provided on the second surface 11b of the box cover 10. By aligning the screw 30 with the first movement limit position mark 21a, the intermediate position mark 21b, or the second movement limit position mark 21c and pressing the head 32 against the support surface 18a, the pitch between the pair of second screw holes 25b can be adjusted to a predetermined pitch. Therefore, compared with the case of positioning the screw member 25 on the box cover 10 while measuring the pitch between the pair of second screw holes 25b, the positioning work of the screw member 25 becomes easier.

[0065] This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range. ○ As shown in FIG. 15, the screw member 25 may not be T - shaped but may be an elongated rectangular shape. In this case, the guide hole 15 of the box cover 10 and the mounting recess 18 surrounding the guide hole 15 may be in the shape of a long hole. Also, since the screw member 25 does not have the contact piece 26, the stepped surface 13d of the box cover 10 may not be provided.

[0066] At the first movement limit position P1, the head 32 of the screw 30 screwed into the first screw hole 25a abuts against the inner surface of the mounting recess 18, specifically, the inner surface closer to the outer surface 14b of the mounting wall portion 14, thereby restricting the movement of the screw member 25 in the direction of coming out of the box cover 10. At the second movement limit position P2, the head 32 of the screw 30 screwed into the first screw hole 25a abuts against the inner surface of the mounting recess 18, specifically, the inner surface closer to the inner surface 14a of the mounting wall portion 14, thereby restricting the movement of the screw member 25 in the direction of coming out of the box cover 10. The screw 30 constitutes the member - side contact portion provided on the screw member 25, and the inner surface of the mounting recess 18 constitutes the main - body - side contact portion provided on the main body 11. The screw 30 and the inner surface of the mounting recess 18 constitute a movement restricting means for restricting the movement of the screw member 25.

[0067] 16, the guide hole 42 that exposes the first screw hole 25a of the screw-in member 25 to the outside of the box cover 10 may be a circular hole through which the shank 31 of the screw 30 can be inserted, and a plurality of circular guide holes 42 may be provided in the second direction Y. In this case, it is preferable to provide the guide hole 42 so that the guide hole 42 is aligned with the first movement limit position mark 21a, the intermediate position mark 21b, and the second movement limit position mark 21c.

[0068] When the shaft portion 31 of the screw 30 is inserted into each guide hole 42, the shaft portion 31 abuts against the inner surface of the guide hole 42, and the screw-in member 25 integrated with the screw 30 can be positioned at each position. Therefore, the position of the screw-in member 25 can be adjusted over multiple stages, and the screw-in member 25 is assembled to the main body 11 so that the pitch of the multiple sets of second screw holes 25b can be changed. The screws 30 and each guide hole 42 constitute positioning means for positioning the screw-in member 25 to maintain the multiple set pitches, and the multiple guide holes 42 as positioning means are provided in multiple locations.

[0069] The indicator 21 may be omitted. The box cover 10 may be used by attaching it to the wiring box B with the second surface 11b facing inside the wiring box B and the first surface 11a exposed to the outside. In this case, the box cover 10 is embedded in a concrete wall together with the wiring box B. A pair of formwork frames are erected to construct the concrete wall, and the wiring box B is supported within the formwork frames by a supporting means (not shown) so that the abutment surface 17a of the abutment rib 17 of the box cover 10 is in close contact with the back surface of one of the formwork frames.

[0070] Next, concrete is poured into the pair of formwork, and after the concrete has hardened, the pair of formwork is removed to erect a concrete wall. The abutment rib 17 of the box cover 10 is exposed on the surface of the concrete wall, and a space 11c is opened inside the abutment rib 17.

[0071] ○ Of the pair of second screw holes 25b in the box cover 10, one of the second screw holes 25b may be formed by a screwing member 25 that is movable relative to the box cover 10 in a position-changeable manner, and the other second screw hole 25b may be formed by a screwing member 25 that is fixed to the main body 11 in a position-unchangeable manner. Also, of the pair of second screw holes 25b in the box cover 10, one of the second screw holes 25b may be formed directly in the box cover 10 instead of the screwing member 25 and may be position-unchangeable.

[0072] ○ Although the pitch of the second screw hole 25b was adjusted by moving both of the pair of screwing members 25, it is also possible to adjust the pitch of the second screw hole 25b by moving only one of the pair of screwing members 25.

[0073] ○ As shown in FIG. 17, the box cover 10 may be a large box cover 10 that includes a plurality of sets of pairs of second screw holes 25b in the first direction X. In this case, the screwing member 25 has dimensions in the width direction F that are larger than those in the embodiment, and includes a plurality of first screw holes 25a and second screw holes 25b in the width direction F as one direction. Then, a large screwing member 25 that includes a plurality of first screw holes 25a and second screw holes 25b in the width direction F may be provided on the box cover 10 so as to be slidable in the second direction Y.

[0074] ○ The box cover 10 may be a large box cover 10 that includes a plurality of sets of pairs of screwing members 25 in the first direction X. ○ In the box cover 10, the space-reducing member and the screwing member 25 may be separate members. In this case, the space-reducing member and the screwing member 25 are arranged to overlap in the plate thickness direction of the main body 11. With this configuration, when the space-reducing member is moved without moving the screwing member 25, only the space 11c can be reduced without moving the second screw hole 25b. Conversely, when the screwing member 25 is moved without moving the space-reducing member, only the second screw hole 25b can be moved without reducing the space 11c or while maintaining a state where the space 11c is narrowed to some extent. In short, the space-reducing member and the screwing member 25 may be interlocked or may move independently.

[0075] ○ Of the pair of screwing members 25, one screwing member 25 may have the same T shape as in the embodiment, and the other screwing member 25 may have an elongated rectangular shape as shown in FIG. 15. In this case, at the portion where the elongated rectangular screwing member 25 is provided, the guide hole 15 of the box cover 10 and the mounting recess 18 surrounding the guide hole 15 may be elongated holes and may not open toward the space 11c.

[0076] ○ In the box cover 10, the main body 11 may be C-shaped. In this case, the space 11c is formed by being surrounded by the C-shaped main body 11. ○ In the box cover 10, the main body 11 may be a round frame shape.

[0077] ○ In the box cover 10, the shape of the space 11c may be arbitrarily changed. ○ When attaching the wiring device 23 to the box cover 10, the mounting screw 40 is inserted through the mounting hole 24a of the wiring device frame 24, but the wiring device 23 itself may be provided with a mounting hole through which the mounting screw 40 passes.

[0078] ○ The wiring device mounting body may not be the box cover 10 and may be the wiring box B. Describe the technical idea that can be grasped from the above embodiment and modification examples.

[0079] [Aspect 1] Comprising a main body surrounding the space in which the wiring device is arranged, A wiring device mounting body having a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes being arranged opposite to the main body so as to sandwich the space, Comprising a plurality of sets of the pair of screw holes arranged in one direction, When the direction in which the straight line connecting the pair of screw holes extends is defined as the opposing direction, At least one of the pair of screw holes is provided in a screw member assembled to the main body so that the position along the facing direction can be changed, and the screw member can be repositioned within a range of two defined movement limit positions. The screw member includes a plurality of screw holes arranged in the one direction. It has movement restricting means for restricting the movement of the screw member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided in the screw member and a main body-side abutting portion provided in the main body, and the movement of the screw member is restricted by the abutting of the member-side abutting portion and the main body-side abutting portion. A wiring device mounting body characterized by this.

[0080] [Aspect 2] It includes a main body surrounding the space where the wiring device is arranged. A wiring device mounting body that includes a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are arranged to face each other with respect to the main body so as to sandwich the space. When the direction in which a straight line connecting the pair of screw holes extends is defined as the facing direction. At least one of the pair of screw holes is provided in a screw member assembled to the main body so that the position along the facing direction can be changed, and the screw member can be repositioned within a range of two defined movement limit positions. It has movement restricting means for restricting the movement of the screw member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided in the screw member and a main body-side abutting portion provided in the main body, and the movement of the screw member is restricted by the abutting of the member-side abutting portion and the main body-side abutting portion. The screw member is capable of continuously variable movement within at least a part of the range between the movement limit positions, and is characterized by including positioning means for positioning it so as to be immovable between the continuously variable movement ranges. A wiring device mounting body.

[0081] [Aspect 3] It includes a main body surrounding the space where the wiring device is arranged. A wiring device mounting body that includes a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are disposed opposite to the main body so as to sandwich the space. When the extending direction of the straight line connecting the pair of screw holes is defined as the opposing direction, At least one of the pair of screw holes is provided in a screwed member assembled to the main body so that its position along the opposing direction can be changed, and the screwed member can be repositioned within the range of two defined movement limit positions. The main body has openings facing outward on both sides in the opposing direction, and has an insertion groove into which the screwed member is inserted. The screwed member is accommodated in the insertion groove so as to be movable in the opposing direction. It has movement restricting means for restricting the movement of the screwed member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided on the screwed member and a main body-side abutting portion provided on the main body. The movement of the screwed member is restricted by the abutment between the member-side abutting portion and the main body-side abutting portion, and it is restricted from coming out of the opening of the insertion groove. A wiring device mounting body characterized by this.

[0082] [Aspect 4] It includes a main body that surrounds the space where the wiring device is disposed. A wiring device mounting body that includes a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are disposed opposite to the main body so as to sandwich the space. When the extending direction of the straight line connecting the pair of screw holes is defined as the opposing direction and the distance between the pair of screw holes along the opposing direction is defined as the pitch, At least one of the pair of screw holes is provided in a screwed member assembled to the main body so that the pitch can be changed. The screwed member is characterized by including positioning means for positioning the screwed member to maintain the pitch.

[0083] [Aspect 5] The positioning means is a screw screwed into the screwing member, and the screw is a wiring fixture attachment body that positions the screwing member by screwing it into the screwing member.

[0084] [Aspect 6] It includes a main body that surrounds the space where the wiring fixture is arranged, It is a wiring fixture attachment body that includes a pair of screw holes into which mounting screws for attaching the wiring fixture to the main body are screwed, and the pair of screw holes are arranged opposite to the main body so as to sandwich the space, When the extending direction of the straight line connecting the pair of screw holes is defined as the facing direction and the distance between the pair of screw holes along the facing direction is defined as the pitch, At least one of the pair of screw holes is provided in a screwing member that is assembled to the main body so as to be changeable to a plurality of set pitches, A wiring fixture attachment body characterized by including positioning means for positioning the screwing member at a plurality of locations in order to maintain a plurality of set pitches.

[0085] [Aspect 7] The pair of screw holes are provided in screwing members having the same configuration respectively in the wiring fixture attachment body.

[0086] [Aspect 8] The wiring fixture attachment body is attached to a wiring box that houses the wiring connected to the wiring fixture. The wiring box is arranged in a hollow wall having a hollow portion between a pair of wall materials, and the space of the wiring fixture attachment body faces a through hole that penetrates one of the wall materials in the thickness direction. The screwing member includes a space reduction portion that protrudes into the space and narrows the space in the wiring fixture attachment body.

[0087] [Aspect 9] It is a main body that surrounds the space where the wiring fixture is arranged, and includes the main body having a pair of opposing first side edges and second side edges that connect one end and the other end of the first side edges. A wiring device attachment body that includes a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are disposed opposite to the main body so as to sandwich the space. When the extending direction of the straight line connecting the pair of screw holes is defined as the facing direction, At least one of the pair of screw holes is provided in a screwed member assembled to the main body so that its position along the facing direction can be changed, and the screwed member can be repositioned within the range of two defined movement limit positions. It has movement restricting means for restricting the movement of the screwed member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided on the screwed member and a main-body-side abutting portion provided on the main body, and the movement of the screwed member is restricted by the abutting of the member-side abutting portion and the main-body-side abutting portion. The screwed member includes a space reducing portion that protrudes into the space, and by moving the screwed member in a direction that narrows the interval between the pair of screw holes while maintaining the shape of the second side edge of the main body surrounding the space, the space is narrowed. A wiring device attachment body characterized by this.

[0088] [Aspect 10] It includes a main body that surrounds the space where the wiring device is disposed. A wiring device attachment body that includes a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are disposed opposite to the main body so as to sandwich the space. When the extending direction of the straight line connecting the pair of screw holes is defined as the facing direction, It includes a space reducing member assembled to the main body so that it can move along the facing direction without moving the screw holes. A wiring device attachment body characterized in that the space is narrowed by moving the space reducing member along the facing direction toward the space.

[0089] [Aspect 11] It includes a main body that surrounds the space where the wiring device is disposed. A wiring device mounting body having a pair of screw holes into which mounting screws for attaching the wiring device to the main body are screwed, and the pair of screw holes are oppositely arranged with respect to the main body so as to sandwich the space. When the extending direction of the straight line connecting the pair of screw holes is defined as the facing direction, At least one of the pair of screw holes is provided in a screwed member assembled to the main body so that its position along the facing direction can be changed, and the screwed member can be repositioned within the range of two defined movement limit positions. It has movement restricting means for restricting the movement of the screwed member at each movement limit position. The movement restricting means is constituted by a member-side abutting portion provided on the screwed member and a main body-side abutting portion provided on the main body, and the movement of the screwed member is restricted by the abutment of the member-side abutting portion and the main body-side abutting portion. The main body includes a space reducing member assembled to the main body so as to be movable independently of the screwed member along the facing direction. A wiring device mounting body characterized in that the space is narrowed by moving the space reducing member along the facing direction toward the space.

Explanation of reference numerals

[0090] B... Wiring box, P1... First movement limit position, P2... Second movement limit position, Y... Second direction as the facing direction, W... Hollow wall, Wa... Gypsum board as wall material, Wb... Through hole, 10... Box cover as wiring device mounting body, 11... Main body, 11c... Space, 13d... Step surface as main body-side abutting portion, 18... Mounting recess as main body-side abutting portion, 23... Wiring device, 25... Screwed member, 25b... Second screw hole, 26... Contact piece as member-side abutting portion, 30... Screw as member-side abutting portion and positioning means, 40... Mounting screw.

Claims

1. A main body is provided to surround a space in which a wiring device is disposed, A wiring device mounting body including a pair of screw holes into which mounting screws for mounting the wiring device to the main body are screwed, and the pair of screw holes are disposed opposite to the main body so as to sandwich the space therebetween, If the direction in which the straight line connecting the pair of screw holes extends is defined as an opposing direction, and the distance between the pair of screw holes along the opposing direction is defined as a pitch, At least one of the pair of screw holes is provided in a screw-in member assembled to the main body, and the pitch can be changed, The wiring apparatus mounting body according to claim 1, wherein the screw-in member is provided with a positioning means for positioning the screw-in member so as to maintain the changed pitch.

2. The screw-in member is movable within a range of two limit positions, a movement limiting means for limiting the movement of the screw-in member at each of the movement limit positions; the movement restricting means is composed of a member-side contact portion provided on the screw-in member and a body-side contact portion provided on the body, and movement of the screw-in member is restricted by contact between the member-side contact portion and the body-side contact portion, 2. The wiring device mounting body according to claim 1, wherein the screw-in member is capable of being infinitely moved within at least a portion of the range between the movement limit positions, and the positioning means is a screw screwed into the screw-in member, and the screw is screwed into the screw-in member to position the screw-in member so that it cannot be moved within the infinitely movable range.

3. 3. The wiring apparatus mounting body according to claim 1, wherein the pair of screw holes are provided in the screw-in members having the same configuration.

4. The wiring apparatus mounting body according to any one of claims 1 to 3, further comprising a space reducing portion that protrudes into the space and reduces the space.

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