JP2007231695A - Box fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box fixture eliminating the nonfixable state of a distributing box when making length adjustment to the pitch between adjacent lightweight shape steel and thinned in comparison with a box fixture formed by attaching a pair of members. <P>SOLUTION: The box fixture 10 has a mounting part 11 to the lightweight shape steel P, and a fixing piece 21 extended from the mounting part 11 to fix the distributing box B thereto. In the box fixture 10, the length along an extended direction to the tip part of the fixing piece 21 from an abutting surface of the mounting part 11 to the side face of the lightweight shape steel P is set almost the same as half of the pitch between the adjacent lightweight shape steel P, and slits 29 are provided for allowing the tip side of the fixing piece 21 to be cut. The length from the slit 29 along the extended direction of the fixing piece 21 to the tip of the fixing piece 21 is set almost the same as the length in an orthogonal direction to an erected direction by the lightweight shape steel P. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a box fixture attached to a lightweight steel for installing a wiring box on a lightweight partition wall.

  The lightweight partition wall is formed by providing wall materials so as to sandwich the lightweight mold steel from both sides of a plurality of lightweight mold steels erected at a predetermined interval. When installing a wiring box on this lightweight partition wall, a box fixture attached to the lightweight steel is used (for example, see Patent Document 1). As shown in FIG. 5, the box fixture 50 disclosed in Patent Document 1 includes a pair of fixture single units 51 and 52, and the other fixture single unit 52 is fitted inside one fixture single unit 51. Are assembled together. The fixtures 51 and 52 are slidable with each other, and the overall length of the box fixture 50 can be freely adjusted. Each of the fixtures 51 and 52 has box mounting surfaces 51a and 52a, and the box mounting surfaces 51a and 52a have a number of slits along the length direction of the fixtures 51 and 52. 51b and 52b are formed intermittently. Connecting portions 51c and 52c are formed between the adjacent slits 51b and 52b, and the strength of the fixtures 51 and 52 due to the slits 51b and 52b is prevented from being lowered. In addition, attachment plate portions 53 and 54 for attaching the fixture units 51 and 52 to the lightweight steel 60 are provided at one end portions of the fixture units 51 and 52 in the length direction.

And in order to install the wiring box 65 in a lightweight partition wall using the said box fixing tool 50, a pair of fixing tool single-pieces 51 and 52 are first slid mutually, and it covers all between the adjacent lightweight steel plates 60. FIG. The total length of the box fixture 50 is adjusted so that the box fixture 50 is interposed. Next, the fixing plate portion 53 of one fixing tool unit 51 is fixed to one light weight type steel 60 with a tapping screw 55, and the mounting plate portion 54 of the other fixing member unit 52 is fixed to the other light weight type steel 60 with a tapping screw 55. The box fixture 50 is attached to a pair of lightweight steel plates 60. Then, the bottom wall of the wiring box 65 is brought into contact with the predetermined positions of the box mounting surfaces 51a and 52a, and the box mounting tapping screw 61 penetrating the bottom wall of the wiring box 65 is screwed into the slits 51b and 52b. Thus, the wiring box 65 is fixed to the box fixture 50. Thereafter, a wall material (not shown) is erected so as to sandwich the lightweight steel 60, and a lightweight partition wall is constructed, and a wiring box is installed on the lightweight partition wall.
Japanese Patent Laid-Open No. 10-219887

  However, the box fixture 50 disclosed in Patent Document 1 is assembled by overlapping a pair of fixtures 51 and 52. And the adjustment of the full length of the box fixture 50 is performed by sliding the fixture simple substance 51 and 52 mutually. For this reason, when the fixtures 51 and 52 are slid, the slits 51b and 52b may overlap with the connecting portions 51c and 52c. Accordingly, the tapping screw 55 cannot be screwed into the position where the slits 51b, 52b and the connecting portions 51c, 52c overlap, and the wiring box 65 can be fixed to the box fixing tool 50 whose length has been adjusted. There are cases where it cannot be done. Further, since the length of the box fixture 50 can be adjusted, the fixture single piece 51 and the fixture single piece 52 are overlapped with each other, so that the thickness of the box fixture 50 increases. For this reason, there has been a problem that the wiring box 65 cannot be installed using the box fixture 50 on the lightweight partition wall in which the space between the wall materials is narrow.

  The present invention has been made in view of the above-described conventional problems, and its purpose is that the wiring box cannot be fixed when the length is adjusted in accordance with the pitch between adjacent lightweight steels. It is possible to provide a box fixture that can reduce the thickness as compared with a box fixture formed by assembling a pair of members.

  In order to solve the above problems, the invention according to claim 1 is directed to a lightweight partition wall in which a plurality of lightweight steels are provided at intervals and wall materials are provided so as to sandwich the lightweight steels. A box fixture that is attached to the lightweight steel, and includes a mounting portion on a side surface of the lightweight steel, and a fixing piece that extends from the mounting portion and to which the wiring box is fixed. In the state where the attachment portion is attached to the side surface of the lightweight steel, the fixing piece extends from the attachment portion so as to extend along the wall surface of the wall member in a direction perpendicular to the standing direction of the lightweight steel. Further, the length along the extending direction of the fixed piece from the abutment surface of the mounting portion to the side of the lightweight mold steel to the tip of the fixed piece is half the pitch between adjacent lightweight mold steels. It is set to be almost the same The fixing piece has a cutting portion that can cut the tip side of the fixing piece, and the length from the cutting portion to the tip of the fixing piece along the extending direction is light weight steel with respect to the standing direction. The gist is that it is set to be approximately the same as the length in the orthogonal direction.

  According to the first aspect of the present invention, in the box fixture, the length from the contact surface of the mounting portion to the side surface of the lightweight steel plate to the tip of the fixing piece is substantially the same as half the pitch of the adjacent lightweight steel plates. is there. For this reason, when the attachment part of a box fixing tool is attached to each of the side surfaces facing each other and adjacent to the inner side of the lightweight partition wall, the leading ends of the fixing pieces of both box fixing tools overlap each other. . Here, a cutting part is formed in the fixed piece, and the length from the cutting part to the tip of the fixed piece along the extending direction of the fixed piece is a direction perpendicular to the standing direction in the lightweight steel It is set to be almost the same as the length to. For this reason, in the state in which the fixed pieces overlap each other, the tip of one fixed piece and the position of the cutting portion of the other fixed piece coincide with each other. Then, by cutting and removing (removing) the distal end side of the fixed piece from the cutting portion, the length of the box fixture along the extending direction of the fixed piece can be made shorter than before cutting, and the fixed piece ( A pair of fixing pieces extend over the entire area between adjacent lightweight steel plates in a state where a slight gap is formed between the tips of the box fixing tools. It becomes like this.

  In addition, when an attachment part is inserted inside one lightweight mold steel and an attachment part of a box fixture is attached to the side surface (inner surface) of the lightweight mold steel, the box is fixed along the extending direction. The protruding length of the tool from the lightweight steel is shortened by the length in the direction perpendicular to the standing direction of the lightweight steel. And the length from the said cutting part along the extending direction to the front-end | tip of a fixed piece is substantially the same as the length to the direction orthogonal to a standing direction in lightweight type steel. For this reason, in the state where the attachment portion of the box fixture is attached to the side surface of the other lightweight steel, the box fixtures do not overlap each other. Therefore, it is possible to fix the wiring box without overlapping the fixed pieces at any position in the extending direction of the fixed pieces, and it is possible to eliminate an increase in thickness due to the overlapping of the fixed pieces. .

  The gist of the invention according to claim 2 is that, in the box fixture according to claim 1, the cutting portion is formed by a slit formed through the fixing piece in the thickness direction. According to invention of Claim 2, since the cutting part is formed from the slit which penetrates a fixed piece to the thickness direction, the location where the slit was formed in the fixed piece has lower rigidity than other places. In addition, the connection area between the front end side and the attachment portion side of the fixed piece can be made smaller than the other portions. Therefore, the fixed piece can be easily bent by the slit, and the fixed piece can be easily cut.

  The invention according to claim 3 is the box fixture according to claim 2, wherein the slit is formed in an elongated shape so as to extend in a direction orthogonal to the extending direction of the fixing piece. To do. According to invention of Claim 3, it becomes possible to cut | disconnect a fixing piece along the direction orthogonal to the extension direction by a slit. Therefore, for example, it is prevented that the edge of a cutting | disconnection edge part becomes diagonal with respect to the extending direction.

  According to a fourth aspect of the present invention, in the box fixture according to any one of the first to third aspects, the lightweight steel has a cross-sectional view in a direction perpendicular to the standing direction. It is a C-shaped steel having a C-shape, and the gist is that the mounting portion is formed so as to be inserted inward from an opening of the C-shaped steel. According to invention of Claim 4, the operation | work which inserts an attaching part into the inner side of one C type steel can be easily performed by adjacent C type steel.

  According to the present invention, it is possible to eliminate the possibility of fixing the wiring box when the length is adjusted in accordance with the pitch between adjacent lightweight steel plates, and to fix the box by assembling a pair of members. The thickness can be reduced compared to the tool.

Hereinafter, an embodiment of a box fixture embodying the present invention will be described with reference to FIGS.
First, the lightweight partition wall W will be described. As shown in FIG. 3B and FIG. 4B, the lightweight partition wall W has a plurality of lightweight steel plates P standing at a predetermined interval, and a pair of wall materials Wa so as to sandwich the lightweight steel plate P. It is constructed by installing each other. The wall material Wa is made of a gypsum board that is generally used. The wall material Wa has a rectangular shape with long sides facing each other (1820 mm) and short sides facing each other (910 mm). It is installed in a state extending in the direction. The lightweight partition wall W is formed such that three lightweight steels P are erected between opposing wall materials Wa, that is, one lightweight steel P is provided at the center of the two lightweight steels P. It is built upright and constructed (only two lightweight steels P are shown in FIGS. 3 and 4), and the interval between adjacent lightweight steels P is equal and set to a predetermined interval. In addition, let the length between the central axes L of the adjacent lightweight mold steel P be a pitch (455 mm), and let the predetermined space | interval between adjacent lightweight mold steel P be the said pitch. The pitch between the lightweight mold steels P in the present application is the pitch (455 mm) between two adjacent lightweight mold steels P in the lightweight partition wall W constructed by sandwiching the three lightweight mold steels P between the wall materials Wa. In other words, the box fixture 10 of the present application is used when the wiring box B is installed on the lightweight partition wall W having the pitch. Note that the box fixture 10 of the present application is constructed by sandwiching four lightweight mold steels P with two lightweight mold steels P standing at an equal interval between the two lightweight mold steels P with the wall material Wa. Even when the wiring box B is installed on the lightweight partition wall W, it can be used. In this case, one box fixture 10 is disposed between adjacent lightweight steel plates P.

  As shown in FIG. 4 (b), the lightweight steel P is a C-shaped steel PC which is made of a thin steel plate and has a substantially C-shaped plan view in a direction orthogonal to the standing direction of the lightweight steel P. As shown in FIG. 3B, there is a square steel PD in which the cross-sectional view has a square frame shape. As shown in FIG. 4B, the C-shaped steel PC includes an opening Ca that extends in the length direction (standing direction) of the C-shaped steel PC, and a back plate Cb that faces the opening Ca, It comprises a pair of side plate portions Cc that sandwich the back plate portion Cb. In C-shaped steel PC, out of the outer lengths along the direction orthogonal to the standing direction, the outer length along the long side is defined as the thickness of C-type steel PC. In addition, opening side portions Cd are formed opposite to each other on both sides of the opening portion Ca. The C-shaped steel PC having the above-described configuration is erected with the opening Ca directed in the same direction at the predetermined interval. That is, the opening Ca in one (right in FIG. 4) C-shaped steel PC of the adjacent C-shaped steel PC and the back plate Cb in the other (left in FIG. 4) C-shaped steel PC are opposed to each other. Arranged. Further, in each C-shaped steel PC, the pair of side plate portions Cc on the side where the wall material Wa is installed are arranged on the same plane.

  On the other hand, as shown in FIG. 3 (b), the square steel PD has a quadrangular cylindrical shape and includes four side plate portions Dc. The square steel PD having the above configuration is erected so that the side plate portions Dc face each other at a predetermined interval, and in each square steel PD, a pair of side plate portions on the side where the wall material Wa is installed. Each Dc is arranged on the same plane. In the square steel PD, the external length along the long side of the external lengths along the direction orthogonal to the standing direction is the thickness of the square steel PD, and the thickness of the square steel PD is the same as that of the C-type steel PC. It is the same as the thickness. In addition, the wiring box B installed in the lightweight partition wall W of the said structure is formed in the bottomed square box shape by which one surface was opened.

  Next, in order to install the wiring box B on the lightweight partition wall W, the box fixture 10 attached to the lightweight steel P (C-type steel PC or square steel PD) will be described. As shown in FIG. 2, the box fixture 10 is formed in an elongated plate shape by bending a thin steel plate. A rectangular plate-like attachment portion 11 is provided at one end of the box fixture 10, and an elongated plate-like fixation piece 21 is extended from one side edge of the attachment portion 11. The mounting portion 11 is formed so as to be able to be inserted into the C-shaped steel PC through the opening Ca of the C-shaped steel PC, and the mounting portion 11 has a plurality of (eight in this embodiment) insertion holes 12. Is formed.

  The fixed piece 21 is formed by bending the thin steel plate so as to extend in a direction orthogonal to the plate surface of the mounting portion 11. 2A, the direction in which the fixed piece 21 extends from the mounting portion 11 is defined as the extending direction of the fixed piece 21, and the fixed piece 21 is indicated by the arrow Y2 in FIG. 2A. 21, the direction orthogonal to the extending direction is the width direction of the fixed piece 21. In the box fixture 10, the length along the extending direction from the contact surface 11 a of the mounting portion 11 to the side surface of the lightweight steel P to the tip of the fixing piece 21 stands up to three lightweight steels P. In the light partition wall W provided, it is set to be approximately the same as half of the pitch (455 mm) of the adjacent light weight steel P. Note that “substantially the same” means that the length of the box fixture 10 from the contact surface 11a to the tip of the fixed piece 21 is the same as half the pitch of the lightweight steel P, and may be slightly shorter. Including. Reinforcing ribs 22 are formed in the bent portion located between the fixed piece 21 and the mounting portion 11 so as to extend from the mounting portion 11 to the fixed piece 21. The fixing piece 21 is positioned on the attachment portion 11 side and extends in a direction orthogonal to the attachment portion 11, and extends obliquely with respect to the extension portion 23 and leaves the attachment portion 11. The step portion 24 extends in the direction, and the fixing portion 25 extends from the step portion 24 in a direction orthogonal to the plate surface of the mounting portion 11.

  In the extending portion 23, the length along the extending direction is substantially the same as the thickness of the C-shaped steel PC and the square-shaped steel PD. Note that “substantially the same” includes the case where the length along the extending direction of the extending portion 23 is the same as the thickness of the C-shaped steel PC and the square-shaped steel PD, and includes a case where the length is slightly shorter. Moreover, in the extending part 23, the half of the length along the extending direction is substantially the same as the half of the thickness of the lightweight steel P. Note that “substantially the same” includes a case where the half of the length of the extending portion 23 along the extending direction and the half of the thickness of the lightweight steel P are the same, and includes a case where it is slightly shorter.

  The step portion 24 is interposed at the boundary between the extending portion 23 and the fixed portion 25, and a reinforcing rib 26 is formed across the step portion 24 and the fixed portion 25. Then, by forming the step portion 24 on the fixed piece 21, the fixed portion 25 is provided at a position shifted to the side away from the mounting portion 11 as compared to the extending portion 23, that is, at a retracted position. The extending portion 23 and the fixing portion 25 are located in two stages. The length of the stepped portion 24 from the extending portion 23 to the fixed portion 25 is substantially the same as the length of the opening side portion Cd.

  A plurality of (two in this embodiment) long holes 27 extending in the extending direction of the fixed piece 21 are formed in the fixed portion 25, and each long hole 27 is formed in the width direction of the fixed piece 21. Formed in the center to. Each elongated hole 27 is screwed with a screw 31 in order to fix the wiring box B to the fixing portion 25 of the fixing piece 21 (see FIGS. 3 and 4). Further, in the fixing portion 25, it is a side portion extending in the extending direction of the fixing piece 21, and one side sandwiching the long hole 27 is a first side portion 25a, and the other side is a second side portion 25b. A connecting portion 28 is interposed between the long holes 27 adjacent to each other in the extending direction so as to connect the first side portion 25a and the second side portion 25b. In the following description, the long hole 27 located on the most distal end side of the fixed piece 21 is referred to as a first long hole 27a, and the long hole 27 adjacent to the attachment portion 11 side from the first long hole 27a is defined as a second long hole. Let it be the hole 27b. The length of the first long hole 27a along the extending direction of the fixed piece 21 is shorter than the length of the second long hole 27b along the extending direction.

  In the fixed portion 25, an elongated slit 29 extending in the width direction of the fixed piece 21 is formed on the distal end side of the fixed piece 21 with respect to the connecting portion 28 so as to sandwich the first long hole 27a. By forming the slit 29 in the fixing portion 25, the rigidity is lowered as compared with a portion where the slit 29 is not formed in the fixing portion 25, and the fixing portion 25 can be bent from the slit 29 and further cut. Can be done. In the present embodiment, the slit 29 constitutes a cutting portion for cutting the distal end side of the fixed piece 21 from the fixed piece 21. A center line M of the slit 29 extending along the width direction of the fixed piece 21 and a center line N of the connecting portion 28 extending along the width direction are indicated by a two-dot chain line in FIG. The slit 29 is formed such that the center line M is positioned closer to the distal end side of the fixed piece 21 than the center line N of the connecting portion 28. Further, in the fixed piece 21, the length from the slit 29 along the extending direction to the tip of the fixed piece 21 is substantially the same as the thickness of the lightweight steel P. Note that “substantially the same” includes the case where the length from the slit 29 along the extending direction to the tip of the fixed piece 21 is the same as the thickness of the lightweight steel P, and includes the case where it is slightly shorter.

  And as shown in FIG.3 (b) and FIG.4 (b), the box fixture 10 of the said structure is the backplate part Cb as a side surface of the said C-shaped steel PC from the insertion hole 12 of the said attaching part 11, or, By screwing a tapping screw 30 into a side plate portion Dc as a side surface of the square steel PD, the square steel PD can be attached to the C-shaped steel PC or the square steel PD.

  Next, a method for attaching the box fixture 10 to the square steel PD as the lightweight steel P will be described. In addition, although the lightweight partition wall W stands upright with three square steel PD, in FIG. 3, only two adjacent square steel PD is shown in figure. As shown in FIGS. 3 (a) and 3 (b), in the adjacent square steel PD, the outer surface of the side plate portion Dc as a side surface facing the lightweight partition wall W and facing each other, The attachment portion 11 is attached by a tapping screw 30. In addition, each attachment part 11 is the same plane as the side plate part Dc on the side where one wall member Wa is installed with the square steel PD at the opening end of the wiring box B when the wiring box B is fixed to the fixing part 25. The attachment position to the side plate portion Dc is adjusted and attached so as to be positioned above.

  In this attached state, the fixing piece 21 of each box fixture 10 extends in a direction orthogonal to the standing direction of the square steel PD. Further, after the wall material Wa is installed, the fixing piece 21 extends along the wall surface so as to be parallel to the wall surface of the wall material Wa. In the box fixture 10, the length along the extending direction from the contact surface 11 a of the attachment portion 11 to the side plate portion Dc to the tip of the fixing piece 21 is half the pitch between adjacent square steel PDs (1 / 2). For this reason, the length along the extending direction of the fixing piece 21 of the box fixture 10 from the side surface of the square steel PD to which the attachment portion 11 is attached is half the pitch between the square steel PDs (1/2 ). Therefore, as shown by a two-dot chain line in FIG. 3A, in the state where the box fixture 10 is attached to the adjacent square steel PD, the distal end sides of the fixing pieces 21 overlap each other. For this reason, it is necessary to adjust the length of the box fixture 10.

  Here, on the front end side of the fixed piece 21, the length from the slit 29 along the extending direction to the front end of the fixed piece 21 is substantially the same as the thickness of the square steel PD. And the side-plate part Dc to which the attachment part 11 was attached exists in the position shifted | deviated inside from the center axis | shaft L of square steel PD by the half of the thickness of this square steel PD. For this reason, when both the box fixtures 10 are attached to the side plate portions Dc, the lengths of the overlapping portions are substantially the same as the thickness of the square steel PD. And since the length from the slit 29 along the extending direction to the front-end | tip of the fixed piece 21 is substantially the same as the thickness of the square steel PD, the front-end | tip of one fixed piece 21 (right side in FIG. 3) Is arranged at a position matching the slit 29 of the other fixing piece 21 (left side in FIG. 3). For this reason, in one fixed piece 21, the front end side of the fixed piece 21 is cut from the slit 29 and removed (removed), whereby the fixed pieces 21 do not overlap each other, and the length adjustment of the box fixture 10 is completed. . As a result, the fixing piece 21 extends over the entire area between the adjacent lightweight steel plates P, and a plurality (three) of long holes 27 are arranged.

  In one box fixture 10, the cutting end 21 b of the fixing piece 21 is positioned closer to the tip side of the fixing piece 21 than the connecting portion 28 in a state where the tip side of the fixing piece 21 is cut and removed. . That is, the connecting portion 28 remains without being cut. Therefore, the state where the first side portion 25a and the second side portion 25b forming the second long hole 27b remain connected by the connecting portion 28 is maintained. The closed state is maintained by the connecting portion 28.

  Next, a method for attaching the box fixture 10 to the C-shaped steel PC as the lightweight steel P will be described. In addition, although the lightweight partition wall W stands upright with three C-shaped steel PCs, only two adjacent C-shaped steel PCs are illustrated in FIG. As shown in FIGS. 4A and 4B, in the adjacent C-shaped steel PC, the attachment portion 11 side is inserted inward from the opening portion Ca of one C-shaped steel PC (right side in FIG. 4), and the back plate The attachment portion 11 of one box fixture 10 is attached to the inner surface (side surface) of the portion Cb by a tapping screw 30. Further, the attachment portion 11 of the other box fixture 10 is attached by a tapping screw 30 to the outer surface of the back plate portion Cb which is the side surface of the other (left side in FIG. 4) C-shaped steel PC. In addition, when the attaching part 11 is attached to the back plate part Cb of the one C-shaped steel PC, the extending part 23 is brought into contact with the edge of the opening side part Cd. Then, because the fixing portion 25 is retracted from the extending portion 23 by the step portion 24, when the wiring box B is fixed to the fixing portion 25, the opening end of the wiring box B is C-shaped steel. It is arranged at a position located on the same plane as the side plate portion Cc of the PC. The box fixture 10 attached to the other C-shaped steel PC has the opening end of the wiring box B positioned on the same plane as the side plate portion Cc of the C-shaped steel PC when the wiring box B is fixed to the fixing portion 25. The attachment position to the side plate portion Cc is adjusted and attached.

  In this attached state, the fixing piece 21 of each box fixture 10 extends in a direction perpendicular to the standing direction of the C-shaped steel PC. Further, after the wall material Wa is installed, the fixing piece 21 extends along the wall surface so as to be parallel to the wall surface of the wall material Wa. In the box fixture 10, the length along the extending direction from the contact surface 11 a of the attachment portion 11 to the side plate portion Cc to the tip of the fixing piece 21 is half the pitch between adjacent lightweight steel plates P (1 / 2). Furthermore, one box fixture 10 is attached to the C-shaped steel PC in a state of being inserted inside the C-shaped steel PC. Here, the length from the slit 29 along the extending direction to the tip of the fixed piece 21 is substantially the same as the thickness of the C-shaped steel PC. And the backplate part Cb to which the attaching part 11 was attached exists in the position which shifted | deviated outside from the center axis | shaft L of C-type steel PC by the half of the thickness of this C-type steel PC. For this reason, one box fixing tool 10 is located in the position which shifted | deviated to the C type steel PC side only the half of the thickness of C type steel PC. For this reason, the tips of the fixing pieces 21 do not overlap with each other in the pair of box fixtures 10 and a slight gap is formed between the tips. Therefore, in a state in which the box fixture 10 is attached to the adjacent C-shaped steel PC, the fixing piece 21 extends over the entirety of the lightweight steel P, and a plurality of long holes 27 are arranged.

  Then, after the box fixture 10 is attached to the square steel PD or C-type steel PC as described above, as shown in FIGS. 3 and 4, the wiring box B is arranged at a position to be installed, and the wiring box B The screw 31 is screwed into the corresponding long hole 27 through the bottom wall. Then, the wiring box B is fixed to the fixing piece 21 and the wiring box B is attached to the C-shaped steel PC or the square-shaped steel PD via the box fixture 10. Thereafter, the wall material Wa is installed so as to sandwich the C-shaped steel PC or the square steel PD, and the lightweight partition wall W is constructed, and the wiring box B is installed in the lightweight partition wall W.

According to the above embodiment, the following effects can be obtained.
(1) In the box fixture 10, the length along the extending direction from the contact surface 11 a of the mounting portion 11 to the side of the lightweight steel P to the tip of the fixing piece 21 is set to the pitch between the adjacent lightweight steels P. Half. In addition, a slit 29 is formed in the fixed piece 21, and the distal end side of the fixed piece 21 can be cut from the slit 29. The length from the slit 29 to the tip of the fixed piece 21 was made substantially the same as the thickness of the lightweight steel P. For this reason, if the attachment part 11 is attached to the side surface (side plate part Dc) which mutually opposes with adjacent square steel PD, it will be in the state which the fixing pieces 21 of a pair of box fixing tool 10 mutually overlap. Here, when the front end side of the fixed piece 21 is cut from the slit 29, the length of the fixed piece 21 in the extending direction can be made shorter than before the cutting, so that the overlapping of the fixed pieces 21 is eliminated and the adjacent corners are removed. The fixed piece 21 extends over the entire space between the steel molds PD. Therefore, it is possible to fix the wiring box B without overlapping the fixed pieces 21 at any position in the extending direction of the fixed pieces 21 and increase the thickness due to the overlapping of the fixed pieces 21. It can be lost.

  Further, the C-shaped steel PC is inserted by inserting it into the inside of the C-shaped steel PC from the opening Ca of one C-shaped steel PC with the adjacent C-shaped steel PC and attaching the mounting portion 11 to the inner surface of the back plate Cb of the C-shaped steel PC. The length in the extending direction of the fixed piece 21 protruding from the C-shaped steel PC can be shortened by the thickness of. For this reason, one box fixing tool 10 overlaps with the other box fixing tool 10 in a state in which the attachment part 11 is attached to the outer surface of the back plate part Cb of the other C type steel PC among adjacent C type steel PCs. Disappears. Therefore, it is possible to fix the box fixture 10 without overlapping the fixed pieces 21 at any position in the extending direction of the fixed pieces 21 and increase the thickness due to the overlapping of the fixed pieces 21. Can also be eliminated. As a result, the problem that the screws 31 cannot be screwed into the fixed pieces 21 due to the overlapping of the fixed pieces 21 can be eliminated, and further, the wiring box B can be installed on the thin lightweight partition wall W by increasing the thickness. The problem of disappearing can be eliminated.

  (2) The fixed piece 21 is formed with a slit 29 penetrating in the thickness direction of the fixed piece 21, and the rigidity of the portion where the slit 29 is formed in the fixed piece 21 can be lowered than the other portions. For this reason, the fixing piece 21 can be easily bent and cut from the place where the slit 29 is formed. Therefore, the operation of cutting and removing the distal end side of the fixed piece 21 and adjusting the length of the fixed piece 21 can be easily performed.

  (3) The slit 29 is formed in an elongated shape extending in a direction orthogonal to the extending direction of the fixed piece 21. For this reason, when the fixed piece 21 is cut from the slit 29, the edge of the cut end portion 21 b of the fixed piece 21 extends in a direction orthogonal to the extending direction of the fixed piece 21. Therefore, for example, the end edge of the cut end portion 21b does not extend obliquely with respect to the extending direction, and the cut end portion forming the oblique shape in a state where the pair of box fixtures 10 are attached to the lightweight steel P. It is also possible to prevent the 21b from overlapping each other.

  (4) A slit 29 for cutting the fixed piece 21 is formed in the fixed piece 21 in advance. For this reason, the fixed piece 21 can be easily cut as compared with the case where the slit 29 is not formed in the fixed piece 21, and the length of the box fixture 10 can be easily adjusted.

  (5) When the fixed piece 21 is cut using the slit 29, the fixed piece 21 is removed from the front end side of the cut end portion 21 b of the fixed piece 21. For this reason, the connecting portion 28 remains in the cut end portion 21b, and the state where the first side portion 25a and the second side portion 25b are connected to each other by the connecting portion 28 is maintained, and the fixed piece 21 is cut. Even in this case, the second elongated hole 27b is prevented from being opened at the cut end 21b. Accordingly, the first side portion 25a and the second side portion 25b are separated from each other, making it impossible to screw the screw 31 into the second long hole 27b or screwing from the opened second long hole 27b. It is possible to prevent the occurrence of a problem that the 31 is pulled out.

  (6) A stepped portion 24 is formed in the fixed piece 21, and the extended portion 23 and the fixed portion 25 are formed in two steps by the stepped portion 24. When the attachment portion 11 is inserted inside the C-shaped steel PC and the box fixture 10 is attached, the extending portion 23 is brought into contact with the opening side portion Cd of the C-shaped steel PC to extend the fixing portion 25. It can be arranged at a position shifted from the installation portion 23. Furthermore, when the wiring box B is fixed to the fixing portion 25, the opening end of the wiring box B is positioned on the same plane as the side plate portion Cc of the C-type steel PC. Therefore, compared with the case where the fixing portion 21 is not formed with the stepped portion 24 and the mounting position of the mounting portion 11 is adjusted so that the opening end of the wiring box B is located on the same plane as the side plate portion Cc of the C-shaped steel PC. Thus, the installation work of the wiring box B using the box fixture 10 can be simplified.

In addition, you may change the said embodiment as follows.
In the fixed piece 21, the step portion 24 may not be formed.
The slit 29 may not be formed so as to extend in a slender shape in a direction orthogonal to the extending direction of the fixed piece 21.

O Instead of the slits 29, the cutting part may be configured by reducing the thickness of the fixing piece 21, or the cutting part may be configured by arranging a large number of round holes in the width direction of the fixing piece 21.
In order to fix the wiring box B to the fixed piece 21, a large number of through holes may be formed in the fixed piece 21 instead of the long holes 27. In addition, the long hole 27 may not be formed in the fixed piece 21. In this case, the screw 31 penetrating the bottom wall of the wiring box B is forcibly screwed into the fixed piece 21.

  ○ A bolt is passed through the bottom wall of the wiring box B, the bolt is inserted into the long hole 27, and a nut is screwed into the bolt, and the wiring box B is fixed to the fixing piece 21 (fixing portion 25) by the bolt and the nut. It may be fixed.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(1) The fixing piece is formed with a plurality of long holes extending along the extending direction and fixing the wiring box to the fixing piece, and between the long holes adjacent to each other in the extending direction. A connecting portion that connects the side portions of the fixed piece with the elongated hole in between is formed, and the cutting portion can remove the fixed piece while leaving the connecting portion at the cut end after cutting the fixed piece The box fixture according to any one of claims 1 to 4, wherein the box fixture is formed at a position.

  (2) The fixed piece is formed in two steps through a stepped portion, and the distal end side of the fixed portion from the stepped portion is shifted from the stepped portion to a side away from the attached portion as compared with the attached portion side. And the fixing | fixed part which can fix a wiring box to this front end side is formed, The box fixing tool as described in any one of Claims 1-4 and technical thought (1).

The perspective view which shows the state which attached the wiring box to the square steel with the box fixture. (A) is a perspective view which shows a box fixing tool, (b) is a partial front view which shows a fixing piece. (A) is a front view which shows the state which attached the wiring box to square steel with the box fixing tool, (b) is a plane sectional view which shows the state which attached the wiring box to square steel with the box fixing tool. (A) is a front view which shows the state which attached the wiring box to C type steel with the box fixing tool, (b) is a plane sectional view which shows the state which attached the wiring box to C type steel with the box fixing tool. The front view which shows the box fixing tool of background art.

Explanation of symbols

  B: Wiring box, P: Light steel, PC: C steel as light steel, Ca: Opening of C steel, PD: Square steel as light steel, Wa: Wall material, W: Light partition wall, 10: Box Fixing tool, 11 ... mounting portion, 11a ... abutting surface, 21 ... fixing piece, 29 ... slit as a cutting portion.

Claims (4)

In order to install a wiring box on a lightweight partition wall in which a plurality of lightweight mold steels are set up at intervals and a wall material is provided so as to sandwich the lightweight mold steel, a box fixture attached to the lightweight mold steel,
An attachment to the side of the lightweight steel;
A fixed piece extending from the mounting portion and to which the wiring box is fixed;
In a state where the attachment portion is attached to the side surface of the lightweight steel, the fixed piece extends from the attachment portion so as to extend along the wall surface of the wall material in a direction perpendicular to the standing direction of the lightweight steel. Furthermore, the length along the extending direction of the fixed piece from the abutment surface of the mounting portion to the side of the lightweight mold steel to the tip of the fixed piece is substantially half of the pitch between adjacent lightweight mold steels. The fixed piece has a cutting portion that can cut the distal end side of the fixed piece, and the length from the cut portion to the distal end of the fixed piece along the extending direction is a lightweight steel. The box fixture set at approximately the same length as the length in the direction perpendicular to the standing direction. The box cutting tool according to claim 1, wherein the cutting portion is formed by a slit formed through the fixing piece in the thickness direction. The box fixture according to claim 2, wherein the slit is formed in an elongated shape extending in a direction orthogonal to the extending direction of the fixing piece. The lightweight steel is a C-shaped steel having a C-shape in a cross-sectional view in a direction perpendicular to the standing direction, and the attachment portion is formed so as to be inserted inward from an opening of the C-shaped steel. The box fixture according to any one of claims 1 to 3.

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