JP2007056630A - Supporting member mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To very easily and quickly install a supporting member B on a structural member without using a welding means, in a case wherein a building board C such as a roofing panel is installed in roof-repairing work or the like. <P>SOLUTION: A supporting member securing device comprises a securing member A comprising an upper securing member A<SB>1</SB>comprising a horizontal base plate section 1 having one end turned up to form an upper engagement end 2 and the other end provided with an upper joining section 3 to be joined by a bolt and a lower securing member A<SB>2</SB>comprising a vertically suspended section 5 having a lower engagement end 6 formed on the bottom end thereof and a lower joining section 7 provided on the top end thereof to be joined by a bolt and a supporting member B fixed on the horizontal base plate of the upper securing member A<SB>1</SB>. The upper engagement end 2 of the upper securing member A<SB>1</SB>is engaged with the end of a horizontal plate piece 14a of the structural member 14, and the lower engagement end 6 of the lower securing member A<SB>2</SB>is engaged with the bottom end of a vertical plate piece of the structural member 14. Further, the upper joining section 3 and the lower joining section 7 are fixed by a fastener 9 consisting of a bolt 9a and a nut 9b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the construction of a modified roof or the like, the present invention is capable of mounting a bracket to a structural material very simply and quickly without using welding means to construct a building plate such as a roof plate. The present invention relates to a bracket mounting device.

Conventionally, when it is necessary to repair the roof of a railway station platform due to aging or damage due to a disaster, the repair work must be performed within a short time at night after the last train. Don't be. In other words, there is a time limit for repairing the roof or the like in a place such as the station platform, the bus terminal, or the parking lot, which is not used only within a specific time. Furthermore, there are various limitations associated with the construction such as the structure installed in the place and the vehicles, automobiles, and the like that should not be damaged.
JP-A-8-284328

  As described above, in the renovation work, the work must be completed within a predetermined time due to time restrictions. Further, in terms of construction restrictions, for example, in order to use the structure disclosed in Patent Document 1 or the like, a through hole is drilled in order to attach a component to a structural material such as an existing beam with a bolt or nut. For this reason, chips and chips are scattered around and the surroundings are soiled. Moreover, as described above, even when the welding means is not employed, it is troublesome to drill the bolt holes one by one in order to further fix the parts such as the metal fittings to the structural material such as the beam. The construction time will be lengthened. In addition, there is a problem that cleaning time is also required.

  In addition, when welding is used, it is necessary to prevent flames from being scattered during the operation and damaging surrounding equipment. For this reason, it is necessary to set up a flameproof sheet around the construction site, increasing the work load and extending the construction time. For this reason, in the construction of the repaired roof, safety and speediness are required in the work, and as a result, an efficient work is required. In particular, in the roof renovation work, the support metal supporting the roof must be easily and firmly fixed. For this reason, the problem (technical problem or purpose) to be solved by the present invention is to realize a safe construction in a short time without using welding means or the like in the renovation work of the enclosure such as the roof. That is.

  In view of the above, the inventor has intensively studied in order to solve the above-mentioned problems. As a result, the invention of claim 1 is characterized in that a substantially folded upper locking edge is formed at one end of the horizontal substrate portion and the other side is bolted. An upper attachment member having an upper joint portion formed thereon, a lower attachment member having a lower locking edge formed at the lower end of the drooping portion, and a lower joint portion bolted to the upper end of the drooping portion; And an upper locking edge of the upper mounting member is locked to the end of the horizontal plate piece of the structural material, and a mounting bracket fixed on the horizontal substrate of the upper mounting member. Further, the lower locking edge of the lower mounting member is locked to the lower end of the vertical plate piece of the structural material, and the upper joint and the lower joint are fixed by a fastener using bolts and nuts. The above-described problems have been solved by using the above-described bracket mounting device.

  Next, the invention of claim 2 is the above-described configuration, wherein the upper joint portion is formed on the same flat surface as the horizontal substrate portion, and the upper mounting member is disposed on a horizontal plate piece of a structural material. The upper joint protrudes horizontally from the structural material, the lower joint is bent at a substantially right angle with respect to the hanging part, and the upper joint and the lower joint are horizontally and parallel to each other. The above-mentioned problems have been solved by using a receiving bracket mounting device that is joined.

  According to a third aspect of the present invention, in the above-described configuration, the upper joint portion is an inclined surface inclined upward with respect to the horizontal substrate portion, and the lower joint portion is an outer surface with respect to the hanging portion. The above-described problems have been solved by using a receiving bracket mounting device that is an inclined surface that is inclined to the side. According to a fourth aspect of the present invention, in the above-described configuration, there is an appropriate gap between the upper joint portion of the upper mounting member and the lower joint portion of the lower mounting member in a jointed state using bolts and nuts. The above-described problems have been solved by using the above-described bracket mounting device.

  Next, the invention according to claim 5 is the above-described configuration, wherein the horizontal board part of the upper mounting member or the hanging part of the lower mounting member is provided with an internal screw part, and the horizontal board part or the hanging part The above-described problems have been solved by providing a receiving bracket mounting device in which an auxiliary fixing portion is formed by screwing a screw shaft portion penetrating the inner screw portion into the inner screw portion. According to a sixth aspect of the present invention, in the above-described configuration, the enclosure to be constructed on the metal fitting is composed of a building plate and a cap material, and the fitting bending is performed on both sides in the width direction of the building plate. The above-described problem is achieved by forming a cap fitting device in which the cap material is fitted to the mating bent portions of the construction plates disposed on both sides of the bracket in the width direction. It has been solved.

  According to the invention of claim 1, a mounting bracket such as a bolt hole without using welding means for mounting a construction plate such as a modified roof on an existing structural material in an enclosure such as a roof. It is possible to carry out construction easily and quickly without making a hole in the work and making the work safe. Next, the invention of claim 2 is such that the upper joint portion of the upper mounting member is formed on the same flat surface as the horizontal substrate portion, and the lower joint member has a hanging portion on the lower joint portion. The upper joint and the lower joint are joined in a horizontal direction and in parallel, and the upper attachment member is disposed on a horizontal plate piece of a structural material. Since the part protrudes horizontally from the structural material, the lower joint part of the lower mounting member can be tightened to the projecting upper joint part with a fastener such as a bolt or nut, so that the tool for tightening can be handled. It can be in an easy state.

  Next, in the invention of claim 3, the upper joint portion is an inclined surface inclined upward with respect to the horizontal substrate portion, and the lower joint portion is inclined outward with respect to the hanging portion. By using the surface, the upper mounting member can be moved in the horizontal direction and the lower mounting member can be moved in the vertical direction at the same time by tightening the fasteners with bolts and nuts. It can be done efficiently. Next, according to the invention of claim 4, the upper joint portion of the upper mounting member and the lower joint portion of the lower mounting member have an appropriate interval in the joined state by the bolts and nuts. Therefore, there is a margin in the tightening part with bolts and nuts in the range of the interval, and it is possible to cope with slight changes in the size of structural materials by tightening fasteners such as bolts and nuts. Therefore, the apparatus according to the present invention can be mounted even on structural materials having slightly different sizes.

  According to a fifth aspect of the present invention, the horizontal board portion of the upper mounting member or the hanging portion of the lower mounting member is provided with an inner screw portion, and a screw shaft passing through the horizontal substrate portion or the hanging portion is the inner screw portion. By being screwed into the screw portion, when the upper mounting member and the lower mounting member in the present invention are mounted on the structural material, the tightening strength can be further increased by tightening the screw shaft. It is possible to prevent the vertical mounting member from sliding laterally with respect to the longitudinal direction of the structural material due to vibration or the like.

  According to a sixth aspect of the present invention, an enclosure constructed by the receiving bracket is constituted by a building board and a cap material, and a fitted bent portion is provided on both sides in the width direction of the building board. When the outer enclosure is made a modified roof by adopting a structure in which the cap material is fitted to the mating bent portions of the building plates that are formed and arranged on both sides in the width direction of the receiving bracket. The workability is excellent, and the construction time can be further shortened.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, as shown in FIGS. 1 to 3, the present invention includes a fixture A composed of an upper mounting member A ₁ and a lower mounting member A ₂ , and a receiving bracket B. Wherein the upper mounting member A ₁ and the lower attachment member A _2, an independent member. The upper mounting member A ₁ is composed of a horizontal substrate portion 1, an upper locking edge 2 and an upper joint portion 3, and a substantially folded upper locking edge 2 is formed at one end of the horizontal substrate portion 1. The upper joint 3 is formed and is bolted to the other side. The lower mounting member A ₂ is composed of a hanging part 5, a lower locking edge 6 and a lower joint 7, and a lower locking edge 6 is formed at the lower end of the hanging part 5. The lower joint 7 is formed at the upper end of the drooping portion 5.

First, in the upper mounting member A ₁ , as shown in FIGS. 3 and 4, the horizontal substrate portion 1 is formed in a flat shape, and a receiving metal fitting B described later is placed and fixed. The upper locking edge 2 is formed substantially in parallel with the horizontal plate portion 1 and the inclined piece 2 a formed in an inclined shape from the edge of the horizontal substrate portion 1 toward the lower surface side and the inner side. And a horizontal edge 2b.

Then, with the horizontal substrate portion 1, the has been an upper locking edge 2 consists angled piece 2a and the horizontal edge 2b, the end of the horizontal plate pieces 14a of the structural member 14 in which the upper attaching member A ₁ is described below It is locked in a state where the part is clamped [see FIG. 1 (A)]. By the inclined piece 2a, the horizontal edge 2b can elastically press the horizontal plate piece 14a, and the fixed state with the structural member 14 can be further strengthened.

Further, the upper joint 3 is a region set over a suitable range at a position opposite to the upper locking edge 2. The upper joint 3, when the upper attaching member A ₁ is placed on a horizontal plate pieces 14a of the structural member 14, as shown in FIG. 1 (A), to the outside from the horizontal plate pieces 14a on in protruding area portion constitutes a role of joining the lower attachment member a ₂ to be described later. As shown in FIG. 4, the upper joint 3 is a substantially rectangular region, and a plurality of bolt through holes 3 a, 3 a,.

Next, as shown in FIG. 3 and FIG. 4, the lower attachment member A ₂ has a hanging part 5 formed in a vertical plate shape. Further, the lower locking edge 6 formed at the lower end of the hanging part 5 is formed on the inner surface side from the end side of the hanging part 5 (when the lower mounting member A ₂ is attached to the structural member 14, its structure And a horizontal end edge 6b formed substantially parallel to the hanging part 5 and a slanting piece 6a that is inclined upward.

  And the lower end part of the vertical piece of the structural material 14 is pinched | interposed by the said hanging part 5 and the lower latching edge 6 comprised from the inclined piece 6a and the horizontal edge 6b. The inclined piece 6a makes the horizontal end edge 6b elastically press the horizontal plate piece 14a, thereby further strengthening the fixed state with the structural member 14.

Further, the lower joint portion 7 is located on the opposite side of the lower locking edge 6 in the hanging portion 5 as shown in FIGS. That is, it is formed at the position of the upper end of the lower joint 7. The lower joint portion 7 is formed to be bent at a substantially right angle with respect to the hanging portion 5 and formed as a horizontal flat surface. Then, by joining the upper junction 3 of the upper attaching member A _1, it is intended to be mounted secured to the structural member 14. The lower joint 7 is a substantially rectangular area like the upper joint 3, and a plurality of through holes 7a, 7a,.

Next, an embodiment in which an auxiliary fixing portion 8 is provided in the horizontal substrate portion ₁ of the upper mounting member A ₁ or the hanging portion 5 of the lower mounting member A ₂ exists (see FIG. 6). The auxiliary fixing portion 8 includes a through-hole portion 8a, an inner screw portion 8b, and a screw shaft portion 8c [see FIG. 6C]. Then, the upper attachment member A ₁ of the through-holes 8a to an appropriate position of the horizontal plate portion 1 is perforated, the inner screw portion 8b is formed in the through hole 8a positions. For the inner screw portion 8b, a part in which an inner screw such as a nut is formed is used. The inner screw portion 8b is fixed to the horizontal substrate portion 1 through fixing means such as welding.

Then, the screw shaft portion 8c is screwed into the inner screw portion 8b. A bolt is used as the screw shaft portion 8c. The inner screw portion 8b may be formed on the inner peripheral surface of the through hole portion 8a. In this case, a nut as the inner screw portion 8b is not necessary. Embodiment of the auxiliary fixing unit 8, but is obtained by including a horizontal base plate portion 1 of the upper attachment member A _1, sometimes the same configuration is provided in the hanging-shaped portion 5 of the lower mounting member A _2. The structure in which the lower fixing member A ₂ includes the auxiliary fixing portion 8 is equivalent to the structure in the case where the upper fixing member A ₁ includes the auxiliary fixing portion 8.

Further, the auxiliary fixing unit 8 is also be provided on either side of the upper attaching member A ₁ and the lower attachment member A _2. By tightening the threaded shaft portion 8c of the auxiliary fixing unit 8 to press strongly horizontal plate pieces 14a or vertical plate piece 14b of the tip structural member 14 of該螺Ko shaft portion 8c, the upper attaching member A ₁ and the lower mounting member It becomes fixed to the strong structural material 14 together with the fixing tool 9 that joins A _2, and the fixture A can be prevented from moving along the longitudinal direction of the structural material 14 (see FIG. 6B). .

The upper joint 3 of the upper attaching member A _1, and the lower joint portion 7 of the lower mounting member A ₂ are, bolts 9a, are joined by fasteners 9 by the nut 9b. Specifically, as shown in FIGS. 1 to 3, the bolts 9a, 9a,... Are inserted into the through holes 3a, 3a,... Of the upper joint portion 3 and the through holes 7a, 7a,. Are inserted and tightened and fixed by the nuts 9b, 9b,. Further, in the upper mounting member A ₁ , the upper joint portion 3 is bent at a substantially right angle with respect to the horizontal substrate portion 1, and in the lower mounting member A ₂ , the hanging portion 5 and the lower side The joint 7 may be formed to be the same flat surface.

As shown in FIGS. 1B and 2, the metal fitting B has legs 11, 11 formed on both sides in the width direction of the support top 10. The leg portions 11 are placed on the horizontal substrate portion 1 of the upper mounting member A ₁ and fixed by fixing means such as welding. Further, a fixing screw shaft 12 is fixed to the support top portion 10, and a roof mounting member such as a hanging member or building plates C and C can be mounted thereon. As the metal fitting B, there is one corresponding to the type of building plate C that constitutes an enclosure described later.

  Next, the envelope is mainly a roof but also includes walls. Various embodiments exist as the building board C constituting the outer enclosure. As shown in FIG. 8, the first embodiment constitutes a fitting structure type folded plate roof or the like, and the adjacent construction plates C and C are fitted and connected via a cap member 18. It constitutes an enclosure that performs. In the fitting type building plates C and C, half angle portions 16 and 16 are formed on both sides in the width direction of the main plate 15, and fitted bent portions 17 and 17 are formed at the top portions of the half angle portions 16 and 16. Has been. The to-be-fitted bent portion 17 is formed in a substantially U-shape and is provided with inclining to-be-fitted end edges 17a and 17a that are inwardly downward from the upper end thereof.

  The cap member 18 is formed with fitting pieces 18b, 18b on both sides in the width direction of the upper portion 18a. And the building boards C and C are arrange | positioned between the said metal fittings B, the cap material 18 is arrange | positioned between the to-be-fitted bending parts 17 and 17, and the to-be-fitted edge 17a, 17a and a fitting piece 18b and 18b are fitted together to form an enclosure such as a roof. In the building board C according to the first embodiment, a hanging element 13 is disposed and fixed on the support top 10 of the receiving bracket B, and the building plates C and C are bent to be fitted via the hanging element 13. The parts 17 and 17 are fixed to the bracket B.

  Next, as shown in FIG. 9, in the second embodiment, the adjacent building plates C and C are connected to each other by a tightening structure, and a half-mountain shape is formed on both sides of the main plate 15 in the width direction. The parts 16 and 16 are formed, and the lower collar part 19 and the upper collar part 20 are formed on the top portions of the half-mountain parts 16 and 16 on the respective building boards C. And the lower collar part 19 and the upper collar part 20 which adjoin the building boards C and C are clamped, and an outer enclosure is comprised. Also in the building board C of the second embodiment, the hanging element 13 is arranged and fixed on the support top 10 of the receiving bracket B. The hanging piece 13 is formed with a tongue piece 13a having substantially the same shape as the lower collar part 19 and the upper collar part 20, and the lower collar part 19 and the upper collar part are sandwiched between the tongue pieces 13a. 20 is tightened.

  Next, as shown in FIG. 10, in the third embodiment, the top portions of the half-mountain portions 16 of the building boards C and C are formed in a substantially trapezoidal mountain shape, and the building boards C and C adjacent in the width direction. There is an overlapping (polymerization structure) type in which the half chevron portions 16 and 16 are connected by polymerization. Then, the screw shaft portion of the fixing screw tool provided as the fastening bolt provided on the metal fitting B that supports the superposed half chevron portions 16 and 16 from below penetrates the top of the superposed half chevron portions 16 and 16. Then, a screw shaft portion protruding from the top portion is used and fixed by a nut.

The structural member 14 to which the fixture A of the present invention is mounted is a steel having a substantially L-shaped cross section composed of a horizontal plate piece 14a and a vertical plate piece 14b. Then, the upper locking edge 2 of the upper mounting member A ₁ is locked to the end of the horizontal plate piece 14 a of the structural member 14. The upper joint 3 this time is from the corner of the structural member 14 protrudes outwardly, and ready for bonding of the lower joint portion 7 of the lower mounting member A _2. Next, the lower locking edge 6 of the lower mounting member A ₂ is locked to the lower end of the vertical plate piece 14b.

At this time, the drooping portion 5 is in contact with or close to the vertical plate piece 14b, and the lower joint portion 7 becomes horizontal. Next, the through holes 3a, 3a,... Drilled in the upper joint 3 and the through holes 7a, 7a,... Drilled in the lower joint 7 are aligned, and bolts 9a, 9a,. The nuts 9b, 9b,... Are fastened and fixed. When the upper mounting member A ₁ and the lower mounting member A ₂ are attached to the structural member 14, an appropriate gap d is present between the upper joint 3 and the lower joint 7. ing.

The gap d may be a small amount, but the tightening allowance for tightening the upper joint portion 3 and the lower joint portion 7 with the fastener 9 of the bolt 9a and nut 9b (by the bolt 9a and the nut 9b). (A range that can be tightened), and by this gap d, it is possible to perform a more firm fixation by the fixing tool 9. A receiving bracket B is fixed to the horizontal board portion 1 of the upper mounting member A ₁ , and a building plate C constituting an enclosure such as a roof or a wall is attached through the receiving bracket B. Is.

Next, in the upper mounting member A _1, as shown in FIG. 7 (A), the upper joint 3 is formed as an inclined surface inclined upwardly with respect to the horizontal substrate unit 1, also the lower attachment member In A ₂ , there is an embodiment in which the lower joint portion 7 is formed as an inclined surface that is inclined outward with respect to the hanging portion 5. More specifically, the upper joint portion 3 is formed as an inclined plate that is inclined outward and upward at an angle of approximately 45 ° with respect to the surface side of the horizontal substrate portion 1. Further, the lower attachment member A ₂ is formed as an inclined plate that is inclined outward and upward at an angle of approximately 45 ° with respect to the hanging portion 5.

Then, the upper mounting member upper anchor edge 2 of A ₁ is locked to the edge of the horizontal plate pieces 14a of the structural member 14, also the lower attachment member A ₂ of lower locking edge 6 is vertical plate piece 14b The upper joint 3 and the lower joint 7 are opposed to each other in a parallel state at an angle of approximately 45 ° (see FIG. 7B).

.. And bolts 9a, 9a,... Are inserted into the through holes 3a, 3a,... Of the upper joint portion 3 and the through holes 7a, 7a,. Are tightened with nuts 9b, 9b,... So that the upper joint portion 3 and the lower joint portion 7 are close to each other in a parallel state, and the horizontal substrate portion 1 moves in the horizontal direction, and also has a drooping shape. The part 5 moves in the vertical direction. The FIG. 7 (B), the by tightening by the bolt 9a and a nut 9b, when said upper joint 3 and a lower bonding portion 7 is closer in parallel state, and the upper mounting member A _1, the lower operation of each of the mounting member a ₂ (moving) direction is described by an arrow.

Thus, the upper anchor edge 2 of the upper attaching member A _1, the engagement between the horizontal plate pieces 14a and vertical plate piece 14b of the lower attachment member A lower locking edge 6 of the ₂ structural member 14 The upper mounting member A ₁ and the lower mounting member A ₂ can be fixed to the structural member 14 while further strengthening. As shown in FIG. 7, reinforcing ribs are provided at the corners of the horizontal substrate portion 1 and the upper joint 3 and the corners of the hanging portion 5 and the lower joint 7. 4 are provided.

(A) is partially in section side view of the present invention, (B) is X ₁ -X ₁ arrow view. It is a perspective view of the present invention. It is the disassembled side view made the partial cross section of this invention. (A) is a disassembled perspective view of the fixture in this invention, (B) is a perspective view of an upper attachment member. It is the side view made into the partial cross section which shows another embodiment of the fixture in this invention. (A) is a longitudinal side view of the present invention provided with an auxiliary fixing part, (B) is a view taken in the direction of arrows X ₂ -X ₂ , and (C) is an enlarged view of part A of (A). (A) is a vertical side view showing another embodiment of the fixture in the present invention, and (B) is an operation view of (A). (A) is the front view which made the enclosure which this invention constructs the fitting structure type, (B) is the principal part enlarged view of (A). (A) is the front view which made the outer enclosure to which this invention constructs the clamping structure type, (B) is the principal part enlarged view of (A). (A) is the front view which made the enclosure which this invention constructs the polymerization structure type, (B) is the principal part enlarged view of (A).

Explanation of symbols

A ... fixture, A 1 _... upper attaching member, A 2 _... lower mounting member, B ... pivot bracket, C ... building board, 1 ... horizontal board unit, 2 ... upper anchor edge, 3 ... upper joint, 5 ... The hanging part,
6 ... Lower locking edge, 7 ... Lower joint part, 8 ... Auxiliary fixing part, 8b ... Inner screw part,
8c ... Screw shaft part, 9 ... Fastening tool, 9a ... Bolt, 9b ... Nut, 14 ... Structural material,
14a ... horizontal plate piece, 14b ... vertical plate piece, 18 ... cap material, d ... gap.

Claims (6)

  An upper mounting member having a substantially folded upper locking edge formed at one end of the horizontal substrate portion and an upper bonding portion formed by bolt bonding to the other side, and a lower locking edge formed at the lower end of the hanging portion. , A fixture comprising a lower attachment member formed with a lower joint that is bolted to the upper end of the drooping-like portion, and a receiving bracket fixed on a horizontal substrate of the upper attachment member, the upper attachment The upper locking edge of the member is locked to the end of the horizontal plate piece of the structural material, and the lower locking edge of the lower mounting member is locked to the lower end of the vertical plate piece of the structural material. In addition, a receiving bracket mounting apparatus, wherein the upper joint portion and the lower joint portion are fixed by a fixing tool such as a bolt and a nut.   2. The upper joint portion according to claim 1, wherein the upper joint portion is formed on the same flat surface as the horizontal substrate portion, and the upper joint portion is made of a structural material in a state where the upper mounting member is disposed on a horizontal plate piece of the structural material. Projecting in a horizontal direction, the lower joint is bent at a substantially right angle with respect to the hanging part, and the upper joint and the lower joint are joined in parallel in the horizontal direction. Bracket mounting device.   2. The upper joint portion according to claim 1, wherein the upper joint portion is an inclined surface that is inclined upward with respect to the horizontal substrate portion, and the lower joint portion is an inclined surface that is inclined outward with respect to the hanging portion. Characteristic bracket mounting device.   The upper joint portion of the upper mounting member and the lower joint portion of the lower mounting member according to any one of claims 1 to 3, wherein an appropriate gap is present in a joined state by a bolt or nut fixing tool. A bracket mounting device characterized by the above.   5. The screw according to claim 1, 2, 3 or 4, wherein an internal screw portion is provided in a horizontal substrate portion of the upper mounting member or a hanging portion of the lower mounting member, and penetrates the horizontal substrate portion or the hanging portion. A receiving bracket mounting device comprising an auxiliary fixing portion in which a shaft portion is screwed into the inner screw portion.   6. The enclosure according to claim 1, 2, 3, 4 or 5, wherein the enclosure to be constructed on the bracket is composed of a building plate and a cap material, and is fitted to both sides of the building plate in the width direction. A receiving bracket mounting apparatus, wherein a bent portion is formed, and the cap material is fitted to the fitted bent portions facing each other of the building plates disposed on both sides in the width direction of the receiving bracket.

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