Fixing bracket

Abstract

To provide a fixing metal fitting that can improve the efficiency of the work of installing a wiring box between adjacent furring strips.SOLUTION: Provided is a fixing metal fitting that fixes adjacent furring strips 1 among a plurality of parallel furring strips 1, 1 and a rail 4 spanned between the adjacent furring strips 1, 1, the fixing metal fitting including a frame 11 into which an end part in a length direction of the rail 4 fits, and a fixing piece 12 that extends from the frame 11 in both directions in the length direction of the furring strip 1. The frame 11 includes a front plate portion 13 that receives a front surface 4a of the rail 4, a pair of side plate portions 14 and 15 that respectively receive both side surfaces 4b of the rail 4, and a bottom plate portion 16 that faces an edge part in the length direction of the rail 4. The front plate portion 13 has a locking piece portion 13a that extends outward in the length direction of the rail 4.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a fixing fitting for fixing a rail made of steel or wood in a state of spanning between a body edge that serves as a base material for the outer wall of a structure.

Background Art

[0002] Conventionally, a plurality of body edges that serve as base materials for the outer wall are spanned side by side between columns and intermediate columns of a structure, and wall materials are fixed to these body edges. In a structure, outlets are often arranged near the floor surface, and switches for lighting and the like are often installed near the hand of the entrance / exit. A wiring box for housing wiring devices such as these outlets and lighting switches may be installed between the body edges.

[0003] For example, as shown in FIG. 9, a plurality of body edges 1, 1 are provided side by side in the vertical direction between columns and intermediate columns (not shown), and a plurality of wall materials W are fixed to the side surface 1a facing the outdoor side of the body edges 1, 1. A rail 4 made of steel is fixed along the vertical direction to the side surface 1b facing the indoor side of the vertically adjacent body edges 1, 1. A wiring box 5 is fixed to the rail 4 at a position between the body edges 1, 1. As fixing fittings for fixing the rail 4 so as to span between the side surfaces 1b of the body edges 1, 1, various proposals have been made. For example, the technique described in Patent Document 1 can be used.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, rails 4 made of steel generally have a standard length and need to be cut to a length corresponding to the spacing between the furring strips 1, 1. The cut ends of the rails 4 have what is known as burrs. As shown in Figure 9, the rails 4 that are fixed across the sides 1b of the furring strips 1, 1 facing the indoor side have their cut ends exposed. For this reason, from a safety standpoint, it is necessary to deburr the cut ends of the rails 4. The problem was that the time spent on this deburring work accounted for more than half of the time spent fixing the rails 4 between the furring strips 1, 1.

[0006] Furthermore, the wiring box 5, which is fixed to the rail 4, protrudes into the interior of the building by the thickness of the rail 4 in the front-to-back direction relative to the side 1b of the furring strips 1, 1. Therefore, when attaching the wiring box 5 to the rail 4, when routing the cable 5a connected to the wiring box 5, it is necessary to separately perform a bent pipe, in which the conduit 5b through which the cable 5a passes is bent toward the side 1b of the lower furring strip 1.

[0007] Therefore, the objective of this invention is to provide a fixing bracket that can improve the efficiency of the installation work of wiring boxes between adjacent furring strips. [Means for solving the problem]

[0008] To solve the above problems, this invention provides a fixing fitting for fixing adjacent furring strips among a plurality of parallel furring strips and a rail that spans between the adjacent furring strips, comprising a frame into which the longitudinal end of the rail fits, and fixing pieces extending from the frame in both longitudinal directions of the furring strips, wherein the frame comprises a front plate portion that receives the front of the rail, a pair of side plate portions that receive each of the two sides of the rail, a rear plate portion that receives the rear of the rail, and a bottom plate portion that faces the longitudinal end of the rail, wherein at least one of the front plate portion and the fixing piece has a locking piece portion that extends outward in the longitudinal direction of the rail, and the locking piece portion is located at at least one of the front ends of the front plate portion and the fixing piece, and a configuration can be adopted in which one of the pair of side plate portions has a first fixing hole for the rail and the other side plate portion has a second fixing hole for the rail.

[0009] In this specification, the side of a structure that moves from the outside to the inside is referred to as "front, front side, or forward," and the side that moves from the inside to the outside is referred to as "rear, rear side, or rear."

[0010] Here, rails are made by cutting steel or wood of standard length to a length slightly smaller than the distance between adjacent purlins. Burrs are present at both ends of the rail in the longitudinal direction, i.e., at the cut ends of the rail.

[0011] In the above configuration, when the frame is fitted to both ends of the rail in the longitudinal direction, the cut ends of the rail are covered by the bottom plate of the frame. Also, the front, rear, and a pair of side parts of the rail are surrounded by the front plate, rear plate, and a pair of side plates of the frame. This rail is placed between adjacent furring strips, with the bottom plate of the frame facing the opposing surfaces of the adjacent furring strips. In this state, it becomes impossible to touch the cut ends of the rail from the inside, eliminating the need to deburr the cut ends of the rail.

[0012] Furthermore, the rail is positioned between adjacent furring strips, and the bottom plate of the frame is positioned so that it faces the opposing surfaces of the adjacent furring strips. In this state, the locking piece of the front plate is engaged with the front surface of the adjacent furring strips. As a result, the front surface of the rail does not protrude forward relative to the front surface of the adjacent furring strips.

[0013] Furthermore, an insertion opening is formed in the frame, surrounded by a front panel, a rear panel, and a pair of side panels. The end of the rail can be inserted through this opening, allowing the frame to be easily fitted onto the cut end of the rail.

[0014] A configuration can be adopted in which the first fixing hole is formed as an elongated hole extending along the length of the rail, the front inner edge of the first fixing hole is inclined forward as it moves inward along the length of the rail, and the rear inner edge of the first fixing hole is inclined backward as it moves inward along the length of the rail.

[0015] Frames are fitted to both ends of the rail in the longitudinal direction, with the front plate of each frame facing forward. Then, each frame is temporarily fixed to the rail. This temporary fixing is done by tightening a screw member to the rail from the outer end in the longitudinal direction of the rail through the first fixing hole of one side plate. This temporary fixing work requires that the rotation center of the screw member be positioned on the center line in the front-to-back direction of the first fixing hole when tightening the screw member. This temporary fixing work requires skill, and if performed by an inexperienced worker, the rotation center of the screw member will be eccentric to one side in the front-to-back direction relative to the center line in the front-to-back direction of the first fixing hole when the screw member is tightened. As a result, the screw shaft of the screw member will become engaged with the front inner edge or the rear inner edge of the first fixing hole.

[0016] According to the above configuration, when the frame, after being temporarily fixed, is moved outward in the longitudinal direction of the rail, the engagement between the screw shaft of the screw member and the front inner edge or rear inner edge of the first fixing hole can be released. Then, each frame can be easily moved in the longitudinal direction of the rail, and the spacing of the bottom plate portions of each frame in the longitudinal direction of the rail can be adjusted.

[0017] A configuration can be adopted in which a pair of side plates have pressing portions that bulge inward in the longitudinal direction of the furring strip, the first fixing hole is located in the pressing portion of one of the pair of side plates, and the second fixing hole is located in the pressing portion of the other side plate, and the frame is in a state in which the rail is sandwiched between the pressing portions of one side plate and the other side plate.

[0018] In this configuration, each frame that fits into the longitudinal end of the rail is held in place by the rail, allowing the rail to be positioned between adjacent furring strips while the frames are being held in place. [Effects of the Invention]

[0019] In this invention, the front panel, a pair of side panels, and a bottom panel of the frame enclose both ends of the rail in the longitudinal direction, so that the cut ends of the rail are not exposed. Therefore, there is no need to deburr the cut ends of the rail, and the workability of installing the rail that spans between the framing members is improved.

[0020] Furthermore, because the front of the rail does not protrude toward the front of the adjacent furring strip, wiring boxes attached to the front of the rail do not require the bending of the conduit through which the cables connected to the box are routed toward the front of the furring strip, thus improving the work efficiency of installing wiring boxes between furring strips. [Brief explanation of the drawing]

[0021] [Figure 1] A perspective view showing the usage state of an embodiment relating to the fixing bracket of this invention. [Figure 2] Exploded perspective view showing an embodiment of a fixing fitting [Figure 3] Cross-sectional view taken along line A-A in FIG. 1 [Figure 4] Cross-sectional view taken along line B-B in FIG. 3 [Figure 5] (a) Cross-sectional view showing a state where a rail with a fixing fitting fitted at its end is arranged between adjacent body edges, (b) Cross-sectional view showing a state where the fixing fitting is being moved closer to the body edge, (c) Cross-sectional view showing a state where the fixing fitting is fixed to the body edge [Figure 6] Cross-sectional view taken along line C-C in FIG. 5(b), (b) Cross-sectional view taken along line D-D in FIG. 5(c) [Figure 7] Side view showing the usage state of this embodiment [Figure 8] (a) Perspective view of a modified example of the frame shown in FIG. 2, (b) Front view of a modified example of the frame shown in FIG. 2, (c) Front view of another modified example of the frame shown in FIG. 2 [Figure 9] Side view showing a conventionally fixed rail spanning between adjacent body edges

Mode for Carrying Out the Invention

[0022] The fixing fitting according to an embodiment of this invention will be described based on the drawings. As shown in FIG. 1, a plurality of body edges 1 serving as base materials for the outer wall are spanned side by side in the vertical direction between columns and intermediate columns (not shown) of a structure, and a plurality of wall materials W are fixed to the outdoor side (rear side) of the plurality of body edges 1. Between the upper first body edge 2 and the lower second body edge 3 adjacent to each other in the vertical direction among the plurality of body edges 1, a rail 4 is fixed via two fixing fittings 10 and 20. A wiring box 5 is attached to the front surface portion 4a of the rail 4.

[0023] Multiple furring strips 1 are made of, for example, lip channel steel, commonly referred to as C-channels, with the groove formed between a pair of lip portions 2c facing downwards. The first furring strip 2 has an upper web portion 2a, a pair of flange portions 2b extending downwards from both ends of the web portion 2a in the width direction (both ends in the front-rear direction), and a pair of lip portions 2c extending inwards in the front-rear direction from the lower end edge of each flange portion 2b. The second furring strip 3 also has a web portion 3a, flange portions 3b, and lip portions 3c, similar to the first furring strip 2. Note that H-beams, angle steel (angle, L-beams), or wood can be used as furring strips 1.

[0024] As shown in Figure 2, the rail 4 is made of lip channel steel, with the groove formed between the pair of lip portions 4c located on the rear side. The rail 4 has a front portion 4a extending in the vertical direction, a pair of side portions 4b extending backward from both ends in the width direction of the front portion 4a, and lip portions 4c extending inward and forward in the width direction of the front portion 4a from the rear end edge of each side portion 4b. For the rail 4, the width dimension of the front portion 4a is smaller than the width dimension of the web portion 2a of the first furring strip 2. The length of the rail 4 is slightly shorter than the vertical distance between the first furring strip 2 and the second furring strip 3. For the rail 4, for example, a rectangular steel pipe or wood may be used.

[0025] Fixing brackets 10 and 20 are attached to both ends of the rail 4 in the longitudinal direction, respectively. The fixing bracket 10 attached to one end (upper end) of the rail 4 in the longitudinal direction is formed by bending a steel plate. The fixing bracket 10 is integrally formed with a frame 11 and fixing pieces 12 extending from the frame 11 in both longitudinal directions of the first furring strip 2. The frame 11 has a rectangular front plate portion 13, a pair of rectangular side plate portions 14 and 15, and a bottom plate portion 16.

[0026] The front panel 13 is parallel to the front flange 2b of the first furring strip 2. A pair of side panels 14 and 15 extend perpendicularly to the rear from both ends of the front panel 13 in the longitudinal direction (width direction of the front panel 13) of the first furring strip 2. The front panel 13 and the pair of side panels 14 and 15 are aligned in the longitudinal direction of the rail 4, with their outer and inner edges (upper and lower edges) coinciding.

[0027] The front plate portion 13 has a locking piece portion 13a that extends outward in the longitudinal direction of the rail 4. The locking piece portion 13a is integrally formed with respect to the outer edge (upper edge) of the front plate portion 13 in the longitudinal direction of the rail 4. The locking piece portion 13a is located in the central part of the upper edge of the front plate portion 13. The front plate portion 13 and the locking piece portion 13a have the same thickness, and their front and rear surfaces are located on the same plane. The locking piece portion 13a locks into the front portion (front flange portion 2b) of the first furring strip 2.

[0028] A pair of side panels 14 and 15 are arranged parallel to each other, facing each other. Fixing pieces 12 are integrally formed on the outer edges (upper edges) of the rail 4 in the longitudinal direction of each of the pair of side panels 14 and 15. The fixing piece 12 of the side panel 14 is positioned perpendicular to the side panel 14. The fixing piece 12 of the side panel 14 extends outward in the width direction of the front panel 13. The fixing piece 12 of the side panel 15 is positioned perpendicular to the side panel 15. The fixing piece 12 of the side panel 15 extends outward in the width direction of the front panel 13.

[0029] As shown in Figure 3, the side plate portion 14 has a pressing portion 14a that bulges inward in the width direction of the front plate portion 13. The pressing portion 14a is elliptical in shape. The pressing portion 14a is inclined inward in the width direction of the front plate portion 13 as its peripheral edge approaches the central portion. The inner surface of the front plate portion 13 in the width direction of the central portion of the pressing portion 14a is a plane parallel to the side plate portion 14.

[0030] A first fixing hole 14b, which is a through hole, is formed in the central part of the pressing portion 14a. The first fixing hole 14b is formed in the shape of an elongated hole that is formed along the length direction (vertical direction) of the rail 4. The opening width of the first fixing hole 14b in the front-rear direction widens outward in the front-rear direction as it moves inward (downward) in the length direction of the rail 4. As shown in Figure 4(a), the center line O passing through the center of the opening of the first fixing hole 14b in the front-rear direction is aligned with the vertical direction. In addition, the front inner edge 14c of the first fixing hole 14b is inclined forward as it moves inward (downward) in the length direction of the rail 4, and the rear inner edge 14d of the first fixing hole 14b is inclined backward as it moves downward.

[0031] The side plate portion 15 has a pressing portion 15a that bulges inward in the width direction of the front plate portion 13. The pressing portion 15a is circular in shape. The pressing portion 15a is inclined inward in the width direction of the front plate portion 13 from its peripheral edge toward the central portion. The inner surface of the front plate portion 13 in the width direction of the central portion of the pressing portion 15a is a plane parallel to the side plate portion 15. A second fixing hole 15b, which is a through hole, is formed in the central portion of the pressing portion 15a. The second fixing hole 15b is circular in shape. The second fixing hole 15b is located opposite the first fixing hole 14b.

[0032] The distance between the pressing portion 14a of the side plate portion 14 and the pressing portion 15a of the side plate portion 15 is formed to be slightly smaller than the width dimension of the front portion 4a of the rail 4. With the front portion 4a of the rail 4 and the front plate portion 13 of the frame 11 facing forward, the rail 4 is fitted into the frame 11, and the rail 4 is held in place by the pressing portion 14a of the side plate portion 14 and the pressing portion 15a of the side plate portion 15.

[0033] The fixing pieces 12 of the side panels 14 and 15 have mounting holes 12a for the first furring strip 2. The mounting holes 12a are located towards the outer and front sides in the width direction of the front panel 13. The front edge of the fixing piece 12 is parallel to the width direction of the front panel 13. The rear edge of the fixing piece 12 is chamfered so that it slopes forward as it extends outward in the width direction of the front panel 13.

[0034] The bottom plate portion 16 has a rectangular cutout portion 16a formed in the central part of the front portion and is located between a pair of side plate portions 14 and 15. A pair of connecting pieces 16b are formed on the outer portion of the cutout portion 16a in the longitudinal direction (width direction of the front plate portion 13) of the first furring strip 2. The bottom plate portion 16 is formed to extend integrally with the front plate portion 13 and backward via the pair of connecting pieces 16b. The bottom plate portion 16 has a rear plate portion 17 that extends inward (downward) in the longitudinal direction of the rail 4 from its rear end edge. The rear plate portion 17 is located between the pair of side plate portions 14 and 15 and is located on the outer (upper) side in the longitudinal direction of the rail 4.

[0035] The fixing bracket 20, which is attached to the other end (lower end) of the rail 4 in the longitudinal direction, has the same shape as the fixing bracket 10 attached to one end of the rail 4 in the longitudinal direction, differing only in that the direction of attachment to the rail 4 is reversed. For this reason, the fixing bracket 20 is given the same reference numeral as the fixing bracket 10 attached to one end of the rail 4 in the longitudinal direction, and its description is omitted. The locking piece 13a of the front plate portion 13 of the fixing bracket 20 locks into the front flange portion 3b of the second furring strip 3. The pair of fixing pieces 12 of the fixing bracket 20 are fixed to the front side of the web portion 3a of the second furring strip 3.

[0036] The wiring box 5, which is attached to the front part 4a of the rail 4, houses wiring equipment such as outlets and switches, such as outlet boxes and switch boxes. Cables 5a connected to the wiring equipment extend downward from the wiring box 5. Cables 5a are routed inside the conduit 5b. The conduit 5b is fixed to the front flange part 3b of the second furring strip 3 using the existing saddle base 5c and saddle band 5d.

[0037] The fixing brackets 10 and 20 according to this invention are configured as described above. Next, a method for attaching the fixing brackets 10 and 20 to the rail 4 between the first furring strip 2 and the second furring strip 3 will be explained based on the drawings.

[0038] First, as preparation, a lip channel steel having a predetermined standard length is cut to a length slightly shorter than the distance between the first furring strip 2 and the second furring strip 3 to produce the rail 4. The frame 11 of the fixing bracket 10 is fitted to one end of the rail 4 in the longitudinal direction, and the frame 11 of the fixing bracket 20 is fitted to the other end. At this time, the fixing brackets 10 and 20 are in a state where the front plate portion 13 of the frame 11 and the front portion 4a of the rail 4 are facing forward. Also, the longitudinal edge of the rail 4 is abutting against the bottom plate portion 16 of the frame 11. Furthermore, the fixing brackets 10 and 20 are held in place by sandwiching the pair of side portions 4b, 4b of the rail 4 between the pressing portion 14a of the side plate portion 14 and the pressing portion 15a of the side plate portion 15.

[0039] Next, the fixing brackets 10 and 20 are temporarily fixed to the rail 4. This temporary fixing is done by tightening the screw member 30 to the rail 4 from the outer end (upper end) in the longitudinal direction of the rail 4 through the first fixing hole 14b of the side plate portion 14. This temporary fixing work requires that the screw member 30 be tightened with its rotation center positioned on the center line O in the front-rear direction of the first fixing hole 14b. This temporary fixing work requires skill, and if performed by an inexperienced worker, the screw member 30 will be tightened with its rotation center eccentric to one side in the front-rear direction (for example, forward in Figure 5(a)) relative to the center line in the front-rear direction of the first fixing hole 14b. As a result, the screw shaft portion 31 of the screw member 30 will be engaged with the front inner edge portion 14c of the first fixing hole 14b.

[0040] Furthermore, the fixing bracket 20 is temporarily fixed to the rail 4. Even in this temporary fixing of the fixing bracket 20, the threaded shaft portion 31 of the screw member 30 is engaged with the front inner edge portion 14c of the first fixing hole 14b, just as in the case of the fixing bracket 10.

[0041] Next, as shown in Figure 5(b), the rail 4, with fixing brackets 10 and 20 temporarily fixed to both ends in the longitudinal direction, is placed between the first furring strip 2 and the second furring strip 3. At this time, the frame 11 of the fixing bracket 20 is placed on the web portion 3a of the second furring strip 3, and the locking piece 13a is locked to the front flange portion 3b of the second furring strip 3. Furthermore, the locking piece 13a of the fixing bracket 10 is locked to the front flange portion 2b of the first furring strip 2. In this locked state, the pair of fixing pieces 12 of the fixing bracket 20 are in contact with the web portion 3a of the second furring strip 3.

[0042] Here, the length of the rail 4 is cut to be slightly shorter than the distance between the first furring strip 2 and the second furring strip 3. As a result, a vertical gap is created between the lip portion 2c of the first furring strip 2 and the bottom plate portion 16 of the fixing bracket 10. In order to eliminate this gap, it is necessary to move the fixing bracket 10 outward (upward) in the longitudinal direction of the rail 4 relative to the rail 4.

[0043] As shown in Figure 5(a), the fixing brackets 10 and 20 of this embodiment have an elongated first fixing hole 14b formed in the side plate portion 14. The front inner edge portion 14c of the first fixing hole 14b is inclined forward as it moves inward along the length of the rail 4, and the rear inner edge portion 14d of the first fixing hole 14b is inclined backward as it moves inward along the length of the rail 4.

[0044] In the temporary fixing described above, the screw shaft portion 31 of the screw member 30 is engaged with the front inner edge portion 14c of the first fixing hole 14b. From this engaged state, the fixing bracket 10 is moved outward (upward) in the longitudinal direction of the rail 4. As shown in Figure 5(c), when the fixing bracket 10 is moved, the screw shaft portion 31 of the screw member 30 is positioned at the lower end of the first fixing hole 14b, and the engagement with the front inner edge portion 14c of the first fixing hole 14b is released. Even in this released state, the rail 4 is held in place by the pressing portion 14a of the side plate portion 14 and the pressing portion 15a of the side plate portion 15, and the frame 11 is held on the rail 4.

[0045] Next, the fixing bracket 10 is moved upward relative to the rail 4. Then, as shown in Figure 6(b), the pair of fixing pieces 12 of the fixing bracket 10 are brought into contact with the lip portion 2c of the first furring strip 2. In this state, the final fixing is performed. This final fixing is done by tightening the screw member 30 to the rail 4 through the second fixing hole 15b of the side plate portion 15 of the fixing bracket 10. The same final fixing is performed for the fixing bracket 20.

[0046] Subsequently, as shown in Figures 3 and 4, the fixing piece 12 of the fixing bracket 10 and the lip portion 2c of the first furring strip 2 are secured by tightening the screw member 40 through the mounting hole 12a. Similarly, the fixing piece 12 of the fixing bracket 20 and the web portion 3a of the second furring strip 3 are secured by tightening the screw member 40 through the mounting hole 12a. Finally, the wiring box 5 is attached to the front of the rail 4 by appropriate known means.

[0047] In addition, when attaching the rail 4 between the first furring strip 2 and the second furring strip 3, the frame 11 of the fixing bracket 20 may be placed on the web portion 3a of the second furring strip 3, and then the fixing piece 12 of the fixing bracket 20 and the web portion 3a of the second furring strip 3 may be fixed by tightening the screw member 40 through the mounting hole 12a.

[0048] In this embodiment, the fixing brackets 10 and 20 are attached to both ends of the rail 4 in the longitudinal direction. The rail 4 is manufactured by cutting a lip channel steel of a predetermined standard length to a length slightly shorter than the distance between the first furring strip 2 and the second furring strip 3. As a result, burrs are present at the cut ends that form the longitudinal ends of the rail 4.

[0049] The fixing brackets 10 and 20 cover the cut edges of the rail 4 with the bottom plate portion 16 of the frame 11. In addition, the front plate portion 13, the pair of side plates 14 and 15, and the rear plate portion 17 of the frame 11 cover the front portion 4a, the pair of side portions 4b, and the lip portion 4c of the cut end of the rail 4. As a result, the cut end of the rail 4 is not exposed, eliminating the need for deburring work that was previously performed.

[0050] Furthermore, when temporarily fixing the screw member 30 as described above, if the screw member 30 is tightened with its rotation center eccentric in the front-rear direction relative to the center line O of the first fixing hole 14b, the screw shaft portion 31 of the screw member 30 will be engaged with the front inner edge portion 14c or the rear inner edge portion 14d of the first fixing hole 14b.

[0051] With the fixing brackets 10 and 20, the engagement between the threaded shaft portion 31 of the threaded member 30 and the front inner edge portion 14c or the rear inner edge portion 14d can be released by moving them outward in the longitudinal direction of the rail 4. Therefore, after temporary fixing, the position of the fixing brackets 10 and 20 relative to the rail 4 can be adjusted.

[0052] Furthermore, when the frame 11 is fitted to both ends of the rail 4 in the longitudinal direction, the fixing brackets 10 and 20 are held in place at both ends of the rail 4 in the longitudinal direction by the pressing portions 14a and 15a of the pair of side plates 14 and 15. In addition, while maintaining this held state, the position of the fixing brackets 10 and 20 relative to the rail 4 can be moved in the longitudinal direction of the rail 4.

[0053] Furthermore, the fixing brackets 10 and 20 are positioned so that their frames 11 are located between the first furring strip 2 and the second furring strip 3. As shown in Figure 7, the locking piece 13a of the front plate portion 13 of fixing bracket 10 is locked to the front flange portion 2b of the first furring strip 2. Similarly, the locking piece 13a of the front plate portion 13 of fixing bracket 20 is locked to the front flange portion 3b of the second furring strip 3. As a result, the front portion 4a of the rail 4 does not protrude forward relative to the front flange portions 2b and 3b of the adjacent first furring strip 2 and second furring strip 3. Therefore, the wiring box 5 attached to the front portion 4a of the rail 4 can have the cable 5a connected to it routed straight downwards, improving the work efficiency of installing the wiring box 5 between the first furring strip 2 and the second furring strip 3.

[0054] Furthermore, the fixing brackets 10 and 20 can be moved outward in the longitudinal direction of the rail 4 relative to the longitudinal end of the rail 4. This allows the spacing between the fixing piece 12 of fixing bracket 10 and the fixing piece 12 of fixing bracket 20 to be wider than the length of the rail 4. Therefore, even when the length of the rail 4 is relatively shorter than the distance between the first furring strip 2 and the second furring strip 3, the rail 4 can be installed between the first furring strip 2 and the second furring strip 3. This makes it possible to use cut lip-shaped channel steel, which is relatively shorter than the distance between the first furring strip 2 and the second furring strip 3 and conventionally difficult to use as rail 4, as rail 4.

[0055] In the above embodiment, as shown in Figure 2, fixing brackets 10 and 20 were described as having a locking piece 13a formed on the front plate portion 13 of the frame 11. However, as shown in Figures 8(a) and (b), fixing brackets 10 and 20 can be used in which a locking piece 13a is formed on the front plate portion 13, and a locking piece 12b is further formed on each of the pair of fixing pieces 12. The locking piece 12b is formed to extend outward in the longitudinal direction of the rail 4 from the front end of the fixing piece 12.

[0056] Furthermore, as shown in Figure 8(c), it is also possible to use fixing brackets 10 and 20 in which the front plate portion 13 does not have a locking piece portion 13a, and only the pair of fixing pieces 12 each have a locking piece portion 12b. [Explanation of symbols]

[0057] 1. Furring strips 1a, 1b side 2 First purlin 3. Second purlin 2a, 3a Web Department 2b, 3b Flange section 2c, 3c Lip section 4 rails 4a Front part 4b Side part 4c Lip part 5. Wiring box 5a cable 5b Piping material 5c saddle base 5D Saddle Band 10, 20 Fixing brackets 11 Frame 12 Fixed piece 12a Mounting hole 12b Locking piece 13 Front plate section 13a Locking piece 14, 15 Side plate part 14a, 15a Pressing part 14b First fixing hole 15b Second fixing hole 14c Front inner edge 14d Posterior inner edge 16 Bottom plate section 16a Notch 16b Connecting piece 17 Rear plate part 30, 40 Screw components 31 Screw shaft O center line W wall material

Claims

1. A fixing bracket for fixing adjacent furring strips among a plurality of parallel furring strips and a rail that spans between those adjacent furring strips, A frame into which the longitudinal end of the rail is fitted, It has fixing pieces that extend from the frame in both longitudinal directions of the purlin, The frame has a front plate portion that receives the front surface of the rail, a pair of side plate portions that receive each of the two sides of the rail, a rear plate portion that receives the rear surface of the rail, and a bottom plate portion that faces the end edge of the rail in the longitudinal direction. At least one of the front plate portion and the fixing piece has a locking piece portion that extends outward in the longitudinal direction of the rail, and the locking piece portion is located at the front end of at least one of the front plate portion and the fixing piece. A fixing bracket comprising a pair of side plates, wherein one side plate has a first fixing hole for the rail, and the other side plate has a second fixing hole for the rail.

2. The first fixing hole is formed in the shape of an elongated hole that extends along the length direction of the rail, The front inner edge of the first fixing hole is inclined forward as it moves inward along the length of the rail. The fixing bracket according to claim 1, wherein the rear inner edge of the first fixing hole is inclined rearward as it moves inward along the length of the rail.

3. Each of the side plate portions has a pressing portion that bulges inward in the longitudinal direction of the furring strip, Of the pair of side plate portions, the first fixing hole is located in the pressing portion of one side plate portion, and the second fixing hole is located in the pressing portion of the other side plate portion. The fixing bracket according to claim 1 or 2, wherein the frame is in a state in which the rail is sandwiched between the pressing portion of one side plate and the pressing portion of the other side plate.

Images