Channel fixing bracket and its body

Abstract

To provide a channel fixture higher in workability than conventional metal fittings, facilitating fitting, and requiring no preliminary machining such as forming of a prepared hole.SOLUTION: A channel fixture 1 comprises: a metal fitting body 2 including a steel material fixing part 21 at least partially inserted into an end of a channel C, a furring strip fixing part 22 brought into contact with the front surface F11 of a furring strip F1, and a connection part 23 for connecting the steel material fixing part 21 and the furring strip fixing part 22; a fixing bolt 3 engaged with a screw hole 211a provided in the steel material fixing part 21 to press the steel material fixing part 21 to a lip C1, thereby fixing the channel C; and a fixing screw 4 inserted into a screw insertion hole 221 provided in the furring strip fixing part 22 and engaged with the furring strip F1.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a channel fixing bracket for fixing, to a furring strip, the end of a channel spanned between a pair of furring strips, and to a bracket body thereof. [Background Art]

[0002] For buildings such as warehouses and factories, a steel structure is often used in which an outer wall material is supported by a plurality of studs and a plurality of furring strips spanned between the respective studs with ends fixed to the studs. In such buildings, since no inner wall material is used, the studs and furring strips are exposed. Therefore, when installing equipment such as wiring boxes, switchboards, fire alarms, and conduits on the inner side of a wall, a channel for supporting the equipment is installed between the furring strips.

[0003] So-called C-channels, which allow easy attachment and detachment of equipment, are often used as channels. To fix a channel to an object, a bracket is known which has one leg bent into an L-shape fixed to the channel, and the other leg fixed to a surface of an object such as a furring strip against which the end of the channel abuts (see, for example, Patent Document 1, Non-Patent Document 1 and Non-Patent Document 2).

[0004] The bracket described in Patent Document 1 is fixed by, for example, clamping the lip of the channel with one leg, and the other leg is fixed to the surface of the object against which the end of the channel abuts using bolts and nuts. The bracket described in Non-Patent Document 1 has one leg fixed to both side surfaces of the channel with two drill screws, and the other leg fixed to the upper or lower surface of the furring strip with two drill screws. Further, the bracket described in Non-Patent Document 2 has one leg fixed to the surface opposite to the opening surface where the lip of the channel is formed with bolts and nuts, and the other leg fixed to the upper or lower surface of the furring strip with three drill screws. [Prior Art Documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2000-291159 [Non-patent literature]

[0006] [Non-Patent Document 1] Kokusai Co., Ltd., General-purpose electrical material rail compatible base support bracket free bracket, [online], [searched February 5, 2023], Internet<URL:https: / / www.kk-kokusai.com / fb-3040-tmd> [Non-Patent Document 2] Marui Sangyo Co., Ltd., Electrical Equipment Parts General Catalog 2020 No. 02, [online], [searched February 5, 2023], Internet<URL:https: / / www.marui-sangyo.jp / products / ecatalog / denzai2020 / index_h5.html#59> Part number M-31Q3 [Overview of the project] [Problems that the invention aims to solve]

[0007] The fittings described in Patent Document 1, Non-Patent Document 1, and Non-Patent Document 2 require screwing in self-drilling screws in both upward and downward directions when fixing them to the furring strips, making it difficult to apply force even when using power tools such as impact drivers. Furthermore, when fixing to the furring strips with power tools, the power tools may interfere with the channels or exterior wall materials, preventing the self-drilling screws from being screwed in straight. In addition, the fitting described in Patent Document 1 requires pre-drilled bolt holes in the furring strips, and the fitting described in Non-Patent Document 2 requires pre-drilled bolt holes in the channels. Thus, conventional fittings have problems such as poor workability, complicated work due to the frequent use of self-drilling screws, and the need for pre-processing such as drilling pilot holes.

[0008] Therefore, the present invention aims to provide a channel fixing bracket and its body that offer better workability than conventional fittings, can be easily installed, and do not require pre-processing such as drilling pilot holes. [Means for solving the problem]

[0009] To solve the above problems, the invention described in claim 1 is a channel fixing fitting for fixing the end of a channel that spans the space between a pair of furring strips to the furring strips, comprising a steel fixing portion into which at least a portion is inserted into the end of the channel, and the furring strips edge A metal fitting body comprising a fixing portion for the purlin that abuts against the purlin, and a connecting portion that connects the steel material fixing portion and the purlin fixing portion, and a connecting portion that screws into a screw hole provided in the steel material fixing portion, thereby connecting the steel material fixing portion The channel fixing bracket is characterized by comprising a fixing bolt that is pressed against the lip portion of the channel to fix the channel, and a fixing screw that is inserted into a screw insertion hole provided in the purlin fixing portion and screwed into the purlin. Furthermore, the invention described in claim 2 is characterized in that, in the channel fixing bracket described in claim 1, the furring strip fixing portion is in contact with the front surface of the furring strip.

[0010] Claim 3 The invention described in claim 1 or 2 The channel fixing bracket described above is characterized in that when the fixing bolt is screwed into the screw hole and pressed against the inner wall surface of the channel, the steel fixing portion is pressed against the lip portion.

[0011] Claim 4 The invention described in claim 1 or 2 The channel fixing fitting described above comprises a steel fixing part body connected to the connecting part and having a bolt insertion hole into which the fixing bolt is inserted, and a pressing piece inserted into the channel and having a screw hole, wherein when the fixing bolt is inserted into the bolt insertion hole and screwed into the screw hole and tightened, the pressing piece and the steel fixing part body clamp the lip part and fix it in place.

[0012] Claim 5 The invention described in claim 1 or 2In the channel fixing bracket according to

[0013] Claim 6 , the invention according to is characterized in that the connecting portion has a length arranged such that the front face of the channel is flush with the front face of the furring, or a length arranged such that the back face of the channel is flush with the back face of the furring. or 2 In the channel fixing bracket according to claim 1

[0014] Claim 7 , the invention according to is characterized in that the furring fixing portion has a length with respect to the height direction of the front face of the furring that is less than half the height of the front face of the furring.

[0015] Claim 8 , the invention according to is a bracket body of a channel fixing bracket for fixing an end portion of a channel spanned across a space between a pair of furings to the furring, comprising: a steel material fixing portion at least a part of which is inserted into an end portion of the channel; a furring fixing portion that abuts against the furring; and a connecting portion that connects the steel material fixing portion and the furring fixing portion, wherein the steel material fixing portion includes a screw hole provided for screwing a fixing bolt that presses the steel material fixing portion against a lip portion of the channel to fix the channel, and the furring fixing portion includes a screw insertion hole provided for inserting a fixing screw to be screwed into the furring. 7 In the bracket body of the channel fixing bracket according to claim Furthermore, the invention described in claim 9 is characterized in that, in the metal fitting body of the channel fixing fitting described in claim 7 or 8, the steel material fixing portion is pressed against the lip portion when the fixing bolt is screwed into the screw hole and pressed against the inner wall surface of the channel.

[0016] Claim 11 , the invention according to is characterized in that the furring fixing portion abuts against a front face of the furring. 7 or 8 In the bracket body of the channel fixing bracket according to The connecting portion has a length such that the front surface of the channel is flush with the front surface of the furring strip, or , it is characterized in that it has a length arranged such that the back face of the channel is flush with the back face of the furring.

[0017] Claim 10 , the invention according to is according to claim 7 or 8In the fitting main body of the channel fixing fitting according to Furthermore, the invention described in claim 12 is characterized in that, in the metal fitting body of the channel fixing fitting described in claim 7 or 8, the length of the furring strip fixing portion with respect to the height direction of the front surface of the furring strip is less than half the height of the front surface of the furring strip. [Effects of the Invention]

[0018] Claim 1 and 2 According to the invention described in , since the steel material fixing portion inserted into the end portion of the channel is screwed with a fixing bolt, and the channel is fixed by pressing the steel material fixing portion against the lip portion, workability is good, attachment can be performed easily, and preliminary processing such as drilling a pilot hole is unnecessary. Further, since a fixing screw is inserted into a screw insertion hole of a furring strip fixing portion that abuts against a front surface of the furring strip and is screwed to the furring strip, the fixing screw can be tightened into the channel and the furring strip from the front side. Therefore, workability is good, attachment can be performed easily, and preliminary processing such as drilling a pilot hole is unnecessary.

[0019] Claim 3 and 9 According to the invention described in , since the steel material fixing portion is configured to be pressed against the lip portion only by screwing and tightening the fixing bolt into the screw hole, workability is good, attachment can be performed easily, and preliminary processing such as drilling a pilot hole is unnecessary.

[0020] Claim 4 According to the invention described in , the steel material fixing portion is constituted by a steel material fixing portion main body connected to the connecting portion and a pressing piece inserted into the channel, and the lip portion is sandwiched and fixed between the pressing piece and the steel material fixing portion main body. Therefore, a load is applied only to the lip portion of the channel, the load on other portions of the channel is suppressed, and deformation of the channel and the like can be prevented. Further, workability is good, attachment can be performed easily, and preliminary processing such as drilling a pilot hole is unnecessary.

[0021] Claim 5 According to the invention described above, by changing the length of the connecting portion, it is possible to position the channel so that its front surface is flush with the front surface of the furring strip, or so that its back surface is flush with the back surface of the furring strip. Therefore, the degree of freedom in attaching the channel to the furring strip is improved. Furthermore, when the front surface of the channel is positioned flush with the front surface of the furring strip, it is possible to install equipment and piping without worrying about the position of studs and furring strips. Moreover, when the back surface of the channel is positioned flush with the back surface of the furring strip, it is possible to prevent the equipment supported by the channel from protruding into the room. In addition, even when the channel is positioned behind the furring strip, fixing bolts and screws can be tightened from the front side to the channel and furring strip, resulting in good workability, easy installation, and no need for pre-processing such as pilot holes. Furthermore, since the channel will come into contact with the exterior wall material supported on the back side of the furring strip along with the pair of furring strips, the stability of the channel fixing is further improved.

[0022] Claim 6 and 12 According to the invention described above, the length of the furring strip fixing part in the height direction of the front surface of the furring strip is set to less than half the height of the front surface of the furring strip, so that even if the channels are arranged in a vertical line, the furring strip fixing parts will not interfere with each other.

[0023] Claim 7 According to the invention described above, a fixing bolt is screwed into a steel fixing part inserted into the end of the channel, and the channel is fixed by pressing the steel fixing part against the lip part. This results in good workability, easy installation, and eliminates the need for pre-drilling such as pilot holes.

[0024] Claim 8According to the invention described above, the framing fixing part is in contact with the front surface of the framing, making it easier to work with and allowing for easier application of force when screwing in the fixing screws, thus enabling the screws to be screwed in straight. Therefore, it is possible to achieve the effects of good workability, easy installation, and a neat finish after installation.

[0025] Claim 11 According to the invention described above, the channel can be fixed so that its back surface is flush with the back surface of the furring strip, thereby reducing the amount by which the equipment attached to the channel protrudes into the room. Furthermore, even when the channel is positioned behind the furring strip, fixing bolts or screws can be tightened from the front side to the channel and furring strip, resulting in improved workability, easy installation, and the elimination of the need for pre-drilling such as pilot holes. In addition, since the channel, along with the pair of furring strips, also comes into contact with the exterior wall material supported on the back side of the furring strip, the stability of the channel fixing is further improved.

[0026] Claim 10 According to the invention described above, the steel fixing part is composed of a steel fixing part body connected to the connecting part and a pressing piece inserted into the channel. The lip part is sandwiched and fixed between the pressing piece and the steel fixing part body, so that the load is applied only to the lip part of the channel, suppressing the load on other parts of the channel and preventing deformation of the channel. In addition, it is easy to work with, can be installed easily, and does not require any preliminary processing such as drilling pilot holes. [Brief explanation of the drawing]

[0027] [Figure 1] These are perspective views (A) of a channel fixing bracket and (B) of the bracket body according to Embodiment 1 of the present invention. [Figure 2] This is a perspective view showing a channel fixed between furring strips using the channel fixing bracket according to Embodiment 1. [Figure 3]These are a front view (A), a side view (B), a top view (C), and a cross-sectional view (D) of the metal fitting body according to Embodiment 1. [Figure 4] This is a perspective view showing channels arranged vertically and fixed using the channel fixing bracket according to Embodiment 1. [Figure 5] These are cross-sectional views (A) and YY cross-sectional view (B) of a channel fixed to a furring strip using the channel fixing bracket according to Embodiment 1, viewed from the side. [Figure 6] This is a perspective view (A) of the channel fixing bracket and a perspective view (B) of the bracket body according to Embodiment 2. [Figure 7] This is a perspective view showing a channel fixed between furring strips using the channel fixing bracket according to Embodiment 2. [Figure 8] These are a front view (A), a side view (B), a top view (C), and a ZZ cross-sectional view (D) of the metal fitting body according to Embodiment 2. [Figure 9] These are cross-sectional views (A) and VV (B) of a channel fixed to a furring strip using the channel fixing bracket according to Embodiment 2, viewed from the side. [Figure 10] This is a perspective view of the channel fixing bracket according to Embodiment 3. [Figure 11] This is a cross-sectional view from above showing a channel fixed to a framing using the channel fixing bracket according to Embodiment 3. [Modes for carrying out the invention]

[0028] The present invention will be described below based on the illustrated embodiments.

[0029] (Embodiment 1) Figure 1 is a first perspective view (A) showing the channel fixing bracket 1 according to this embodiment, and a second perspective view (B) showing only the bracket body 2 that constitutes the channel fixing bracket 1. Figure 2 is a perspective view showing the state in which the channel C is fixed between a pair of furring strips F1 and F2 by the channel fixing bracket 1. Figure 3 is a front view (A), a left side view (B), a top view (C), and an XX cross-sectional view (D) of the front view (A) of the bracket body 2. This channel fixing bracket 1 is a fitting for fixing and supporting a channel C, which is used to support various equipment and electrical conduits, between a pair of furring strips F1 and F2.

[0030] Here, the pair of furring strips F1 and F2 are structural steel members that are placed between multiple studs (not shown) and each stud, with their ends fixed to the studs, and together with the studs, support the exterior wall material E (shown as hatching in Figure 2), and are used in steel-framed buildings. The furring strips F1 and F2 are horizontal furring strips arranged in a roughly horizontal direction, consisting of channels with a roughly U-shaped cross-section and opposing lip portions provided at both ends.

[0031] Furthermore, channel C is a long body with a roughly U-shaped cross-section and opposing lip portions C1 formed from both ends. Specifically, side portions C3 are provided extending roughly perpendicularly from both side edges of the strip-shaped back portion C2, and further, short-sided lip portions C1 are provided extending from the end edges of both side portions C3 on the side opposite the back portion C2, either roughly parallel to the back portion C2 or folded inward, and facing each other. In this embodiment, we will describe the case in which channel C is positioned so that its opening side, i.e., the opening side with the lip portions C1, faces the front, and is fixed so that it is flush with the front surfaces of the furring strips F1 and F2.

[0032] The following describes the lower channel fixing bracket 1 that secures channel C to the lower furring strip F1. Note that the upper channel fixing bracket 1, which secures channel C to the upper furring strip F2, is the same but used upside down, so a detailed explanation is omitted.

[0033] The channel fixing bracket 1 comprises a bracket body 2, a fixing bolt 3, and a fixing screw 4. The bracket body 2 is formed in a roughly stepped shape by bending a roughly rectangular metal plate in two places in the width direction, and includes a steel material fixing part 21 provided at one end, a furring strip fixing part 22 provided at the other end, and a connecting part 23 that connects the steel material fixing part 21 and the furring strip fixing part 22. The thickness and width of the bracket body 2 are set to obtain the strength necessary to fix and support the channel C that supports various equipment such as wiring boxes.

[0034] The steel fixing portion 21 of the metal fitting body 2 comprises a fixing surface 211 that rises substantially vertically from the end of the connecting portion 23, and a pair of contact portions 212 that are bent perpendicular to the fixing surface 211 from both sides of the fixing surface 211. The steel fixing portion 21 is inserted into the end of the channel C, and the pair of contact portions 212 abut against the inside of the lip portion C1 of the channel C. A screw hole 211a is provided in a burred hole approximately in the center of the fixing surface 211. In addition, notches are provided at the upper corners of the pair of contact portions 212 to facilitate insertion into the channel C.

[0035] The purlin fixing portion 22 of the metal fitting body 2 is provided so as to descend substantially vertically from the other end of the connecting portion 23 and abuts against the front surface F11 of the purlin F1. The width W1 of the purlin fixing portion 22 is wider than the width of the steel material fixing portion 21 in order to stably support the channel C. A screw insertion hole 221 is provided in the approximate center of the purlin fixing portion 22. Note that the number of screw insertion holes 221 is not limited to one, but may be two or more. Also, the width W1 of the purlin fixing portion 22 may be the same as the width of the steel material fixing portion 21.

[0036] Furthermore, the length L of the furring strip fixing part 22 along the height direction of the front surface F11 of the furring strip F1 is set to less than half the height H of the front surface F11 of the furring strip F1 (see Figure 5). Therefore, as shown in Figure 4, even if the channels C are arranged vertically side by side using the channel fixing bracket 1, the furring strip fixing parts 22 will not interfere with each other. This function also makes it possible to arrange the conduit support clips used to fix the conduits vertically side by side with the channels C.

[0037] The connecting portion 23 is connected to the lower end of the steel fixing portion 21 and the upper end of the furring strip fixing portion 22, and is provided to be approximately horizontal with the same width as the furring strip fixing portion 22. The length L1 of the connecting portion 23 relative to the depth direction of the furring strip F1 is such that when the channel C is fixed between the furring strips F1 and F2, the front surface of the channel C (the opening side on which the lip portion C1 is provided) is flush with the front surface F11 of the furring strip F1 (see Figure 2).

[0038] Next, we will explain how to fix channel C using channel fixing bracket 1. Figure 5(A) is a cross-sectional view from the side showing channel C fixed to furring strip F1 using channel fixing bracket 1, and Figure 5(B) shows the YY cross-sectional view of Figure 5(A).

[0039] The channel fixing bracket 1 is inserted from the lower end of channel C so that the fixing surface 211 faces the back portion C2 of channel C, with the fixing bolt 3 screwed into the screw hole 211a. When the fixing bolt 3 is tightened from the opening side of channel C in this state, the tip of the fixing bolt 3 comes into contact with the back portion C2 of channel C, and the tips of the pair of contact portions 212 are pressed against the inside of the lip portion C1 of channel C. This fixes the channel fixing bracket 1 and channel C.

[0040] Furthermore, to ensure that the fixing bolt 3 does not slip when contacting channel C and does not loosen, it is preferable to use, for example, a recessed bolt. Although not described in detail here, the upper end of channel C and the channel fixing bracket 1 are fixed in the same manner.

[0041] Next, channel C, with channel fixing brackets 1 attached to both ends, is inserted between a pair of furring strips F1 and F2, and the furring strip fixing portion 22 is brought into contact with the front surfaces F11 and F21 of furring strips F1 and F2. Then, fixing screws 4 are inserted into the screw insertion holes 221 of the furring strip fixing portion 22 and screwed into furring strips F1 and F2. For example, self-drilling screws are used for the fixing screws 4. In this way, channel C is fixed between furring strips F1 and F2 such that its front surface (the opening side on which the lip portion C1 is provided) is flush with the front surfaces F11 and F21 of furring strips F1 and F2.

[0042] As described above, the channel fixing bracket 1 according to this embodiment has a structure in which the steel fixing part 21 is pressed against the lip part C1 simply by screwing the fixing bolt 3 into the screw hole 211a and tightening it, resulting in good workability, easy installation, and no need for pre-processing such as drilling pilot holes. In addition, since the fixing screws 4 are inserted into the screw insertion holes 221 of the furring strip fixing part 22 that abuts the front surface of the furring strips F1 and F2 and screwed into the furring strips F1 and F2, the fixing bolts and fixing screws 4 can be tightened from the front side to the channel C and furring strips F1 and F2.

[0043] According to the channel fixing bracket 1 of this embodiment, the steel fixing part 21 is structured such that the fixing bolt 3 is screwed into the screw hole 211a and pressed against the inner wall surface of the channel C, and the contact part 212 of the steel fixing part 21 is pressed against the lip part C1. Therefore, it is easy to work with, can be installed easily, and does not require any preliminary processing such as drilling pilot holes.

[0044] According to the channel fixing bracket 1 of this embodiment, it is possible to position the channel C so that its front surface is flush with the front surfaces of the furring strips F1 and F2. Therefore, it is possible to install equipment and piping without having to worry about the arrangement of studs and furring strips.

[0045] According to the channel fixing bracket 1 of this embodiment, the length L of the furring strip fixing part 22 in the height direction of the front surfaces of the furring strips F1 and F2 is set to less than half the height F of the front surfaces of the furring strips F1 and F2. Therefore, even if the channels C are arranged side by side in the vertical direction, the furring strip fixing parts 22 will not interfere with each other.

[0046] (Embodiment 2) The channel fixing bracket according to this embodiment differs from that of Embodiment 1 in that it fixes channel C so that the back surface of channel C is flush with the back surfaces of furring strips F1 and F2. Note that the channel fixing bracket according to this embodiment has the same configuration as the channel fixing bracket 1 according to Embodiment 1, except for some differences in dimensions; therefore, a detailed explanation of each part is omitted.

[0047] Figure 6 is a first perspective view (A) showing the channel fixing bracket 1 according to this embodiment, and a second perspective view (B) showing only the bracket body 2 that constitutes the channel fixing bracket 1. Figure 7 is a perspective view showing the state in which the channel C is fixed between a pair of furring strips F1 and F2 by the channel fixing bracket 1 so that the back surface of the channel C is flush with the back surfaces F12 and F22 of the furring strips F1 and F2. Figure 8 is a front view (A), a left side view (B), a top view (C), and a ZZ cross-sectional view (D) of the front view (A) of the bracket body 2. Furthermore, Figure 9(A) is a cross-sectional view seen from the side showing the state in which the channel C is fixed to the furring strip F1 so that the back surface of the channel C is flush with the back surface F12 of the furring strip F1 by the channel fixing bracket 1, and Figure 9(B) shows a VV cross-sectional view of Figure 9(A).

[0048] In this embodiment, the metal fitting body 2 has a length L2 in the depth direction of the connecting portion 23 of the furring strips F1 and F2 that is longer than the length L1 of the first embodiment, in order to fix the channel C so that the back surface of the channel C is flush with the back surfaces F12 and F22 of the furring strips F1 and F2. Furthermore, in order to suppress the instability of fixing the channel C due to the length of the connecting portion 23, the width W2 of the furring strip fixing portion 22 and the connecting portion 23 is made wider than the width W1 of the first embodiment, and the number of screw insertion holes 221 that are fixed by fixing screws 4 is increased to two, and the fitting is fixed with two fixing screws 4.

[0049] In this embodiment, a configuration using two fixing screws 4 is shown, but the number of fixing screws 4 used is not limited to two; it may be one or three or more. Also, the width W2 of the purlin fixing portion 22 may be the same as the width of the steel material fixing portion 21.

[0050] As described above, the channel fixing bracket 1 according to this embodiment provides the same effects as the channel fixing bracket 1 according to Embodiment 1, and since the channel C is positioned behind the furring strips F1 and F2, it is possible to prevent the equipment supported by the channel C from protruding significantly into the room. In addition, since the channel C comes into contact with the exterior wall material supported on the back side of the furring strips, along with the pair of furring strips, the stability of the channel fixing is further improved.

[0051] Furthermore, with the channel fixing bracket 1 according to this embodiment and the channel fixing bracket 1 according to Embodiment 1, by changing the length of the connecting portion 23, it is possible to position the front of the channel C so that it is flush with the front of the furring strips F1 and F2, or so that the back of the channel C is flush with the back of the furring strips F1 and F2, thereby improving the degree of freedom in attaching the channel C to the furring strips F1 and F2. Also, even when positioning the back of the channel C so that it is flush with the back of the furring strips F1 and F2, the fixing bolts and fixing screws 4 can be tightened from the front side to the channel C and furring strips F1 and F2, so the workability is good, installation can be done easily, and no pre-processing such as drilling pilot holes is required.

[0052] (Embodiment 3) The channel fixing bracket according to this embodiment differs from embodiments 1 and 2 in that the steel fixing portion is divided into two parts and the lip portion C1 of the channel C is sandwiched and fixed between them. Note that the same reference numerals are used for components identical to those in embodiment 1, and detailed explanations are omitted.

[0053] Figure 10 is a perspective view of the channel fixing bracket 1A according to this embodiment. The channel fixing bracket 1A consists of a bracket body 2A, one fixing bolt 3, and two fixing screws 4. The steel material fixing portion 25 of the bracket body 2A comprises a steel material fixing portion body 251 connected to a connecting portion 23, and a pressing piece 252 inserted into the channel C.

[0054] The steel fixing part body 251 is provided so as to rise substantially vertically from the end of the connecting part 23, and a bolt insertion hole 251a into which a fixing bolt 3 is inserted is provided in the approximate center. Furthermore, the width of the steel fixing part body 251 is at least wider than the distance between the lip parts, and more preferably wider than the width of the channel C.

[0055] The pressing piece 252 has a pair of contact portions 252a, with both sides bent vertically. Notches are provided at the upper and lower corners of the pair of contact portions 252a to facilitate insertion into the channel C. In addition, a screw hole 252b is provided in a burred hole approximately in the center of the pressing piece 252.

[0056] Figure 11 is a cross-sectional view from above showing the channel C fixed to the furring strip F1 by the channel fixing bracket 1A. The channel fixing bracket 1A is constructed by inserting a fixing bolt 3 into the bolt insertion hole 251a of the steel fixing part body 251, screwing the tip of the fixing bolt 3 into the threaded hole 252b of the pressing piece 252, inserting the pressing piece 252 from the end of the channel C, and positioning the steel fixing part body 251 on the front side of the channel C. When the fixing bolt 3 is tightened from this state, the steel fixing part body 251 and the pressing piece 252 clamp and fix the lip portion C1 of the channel C.

[0057] In embodiments 1 and 2, where the fixing bolt 3 is pressed against the back portion C2 of the channel C, overtightening of the fixing bolt 3 may cause deformation of the channel C. In contrast, the channel fixing bracket 1A of this embodiment consists of a steel fixing part 251 connected to the connecting part 23 and a pressing piece 252 inserted into the channel C. The lip portion C1 is sandwiched and fixed between the pressing piece 252 and the steel fixing part body 251, so that the load is applied only to the lip portion C1 of the channel C, suppressing the load on other parts of the channel C and preventing deformation of the channel C. Furthermore, similar to embodiments 1 and 2, it offers good workability, can be easily installed, and does not require pre-drilling such as pilot holes.

[0058] Although embodiments of this invention have been described above, the specific configuration is not limited to the embodiments described above, and any design changes, etc., that do not depart from the gist of this invention are also included. For example, in the above embodiment, the opening side of channel C is oriented towards the front, but the opening side may be oriented to the side or towards the back. In this case, it is necessary to appropriately change the shape of the steel fixing part according to the orientation of the opening side of channel C.

[0059] In addition, examples were described in which the front of channel C is positioned flush with the front of furring strips F1, F1, and in which the back of channel C is positioned flush with the back of furring strips F1, F1. However, by adjusting the length of the connecting portion 23, the front of channel C may be positioned at an intermediate position in the depth direction of furring strips F1, F1.

[0060] Furthermore, while we have described how to fix channel C to horizontal furring strips, this method is also applicable when fixing channel C between a pair of vertical furring strips. [Explanation of symbols]

[0061] 1 channel mounting bracket 2 Metal fittings 3 Fixing bolts 4 Fixing screws 21 Steel fixing part 22 Fixing part for the framing 23 Connecting part 211a Screw hole 212 Contact part 221 Screw insertion hole 1A Channel Fixing Bracket 2A Metal fitting body 25 Steel fixing part 251 Steel fixing part body 251a Bolt insertion hole 252 Pressing pieces 252b Screw hole C channel C1 Lip section F1, F2 furring strips

Claims

1. A channel fixing bracket for fixing the end of a channel that spans the space between a pair of furring strips to the furring strips, A metal fitting body comprising: a steel fixing portion into which at least a part is inserted at the end of the channel; a furring strip fixing portion that abuts against the furring strip; and a connecting portion that connects the steel fixing portion and the furring strip fixing portion, A fixing bolt that, by screwing into a screw hole provided in the steel fixing part, presses the steel fixing part against the lip portion of the channel and fixes the channel, A fixing screw is inserted into a screw insertion hole provided in the aforementioned purlin fixing part and screwed into the purlin, A channel fixing bracket characterized by comprising the following features.

2. The purlin fixing portion is in contact with the front surface of the purlin, The channel fixing bracket according to feature 1.

3. The steel fixing portion is pressed against the lip portion when the fixing bolt is screwed into the screw hole and pressed against the inner wall surface of the channel. The channel fixing bracket according to feature 1 or 2.

4. The aforementioned steel material fixing part is, A steel material fixing part body connected to the aforementioned connecting part and provided with a bolt insertion hole into which the fixing bolt is inserted, It comprises a pressing piece inserted into the channel and having the screw hole provided therein, When the fixing bolt is inserted into the bolt insertion hole and screwed into the threaded hole and tightened, the pressing piece and the steel fixing part body clamp the lip portion and fix it in place. The channel fixing bracket according to feature 1 or 2.

5. The connecting portion has a length such that the front surface of the channel is flush with the front surface of the furring strip, or a length such that the back surface of the channel is flush with the back surface of the furring strip. The channel fixing bracket according to feature 1 or 2.

6. The length of the furring strip fixing portion in the height direction of the front surface of the furring strip is less than half the height of the front surface of the furring strip. The channel fixing bracket according to feature 1 or 2.

7. A bracket body for a channel fixing fitting, which is used to fix the end of a channel that is stretched across the space between a pair of furring strips to the furring strips, The channel comprises a steel fixing portion into which at least a portion is inserted, a furring strip fixing portion that abuts against the furring strip, and a connecting portion that connects the steel fixing portion and the furring strip fixing portion. The steel fixing portion is provided with a screw hole for screwing in a fixing bolt that presses the steel fixing portion against the lip portion of the channel to fix the channel, The metal body of the channel fixing bracket is characterized in that the purlin fixing portion is provided with a screw insertion hole for inserting a fixing screw that is screwed into the purlin.

8. The aforementioned purlin fixing portion is in contact with the front surface of the purlin, The metal fitting body of the channel fixing fitting according to feature 7.

9. The steel fixing portion is pressed against the lip portion when the fixing bolt is screwed into the screw hole and pressed against the inner wall surface of the channel. The metal fitting body of the channel fixing fitting according to feature 7 or 8.

10. The aforementioned steel material fixing part is, A steel material fixing part body connected to the aforementioned connecting part and provided with a bolt insertion hole into which the fixing bolt is inserted, It comprises a pressing piece inserted into the channel and having the screw hole provided therein, When the fixing bolt is inserted into the bolt insertion hole and screwed into the threaded hole and tightened, the pressing piece and the steel fixing part body clamp the lip portion and fix it in place. The metal fitting body of the channel fixing fitting according to feature 7 or 8.

11. The connecting portion has a length such that the front surface of the channel is flush with the front surface of the furring strip, or a length such that the back surface of the channel is flush with the back surface of the furring strip. The metal fitting body of the channel fixing fitting according to any one of claims 7 or 8.

12. The length of the furring strip fixing portion in the height direction of the front surface of the furring strip is less than half the height of the front surface of the furring strip. The metal fitting body of the channel fixing fitting according to feature 7 or 8.

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