JP2009203687A - Runner mounting bracket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a runner mounting bracket which facilitates mounting of a runner on a beam. <P>SOLUTION: The runner mounting bracket 1 functions to mount a ceiling-side runner formed of a long plate and side plates perpendicularly extending from both lateral edges of the long plate in one direction, on a horizontal plate of the beam. The runner mounting bracket is formed of: a base plate 6, a pair of beam pinching pieces 7, 7 extending from the base plate 6 in one direction; and a pair of runner pinching pieces 8, 8 extending from the base plate in a direction opposite to the one direction. The pairing beam pinching pieces 7, 7, and the base plate 6 cooperatively pinch both lateral end faces of the horizontal plate of the beam, and the pairing runner pinching pieces 8, 8 are folded at a location of each side plate lower edge of the ceiling-side runner to pinch an external surface and internal surface of the side plates, which enables the ceiling-side runner to be mounted on the horizontal plate of the beam. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a runner attachment for attaching a ceiling-side runner holding an upper end portion of a stud as a wall base to a beam, and relates to a runner attachment capable of easily attaching a ceiling-side runner to a beam.

A runner fitting for attaching a ceiling-side runner that holds the upper end portion of a stud serving as a wall base to a beam is known (see, for example, Patent Document 1).
JP 2006-125087 A

However, the above-described conventional runner fitting (runner mounting piece) is attached to the beam with a scissors and attached to the runner with tapping screws. There was a problem that a tool such as a screwdriver was required and the work was troublesome.
This invention is made | formed in view of the said problem, and provides the runner attachment which can attach a runner to a beam easily.

A runner fixture according to the present invention is a runner fixture for attaching a ceiling-side runner having a long plate and side plates extending vertically in one direction from both side edges in the width direction of the long plate to a horizontal plate of a beam. A pair of beam sandwiching pieces provided to extend in one direction from the substrate, and a pair of runner sandwiching pieces provided to extend in the direction opposite to the one direction from the substrate, The beam sandwiching piece and the substrate sandwich the both ends of the horizontal plate of the beam in the width direction, and the pair of runner sandwiching pieces are bent at the lower end positions of both side plates of the ceiling runner so that the outer surface and the inner surface of the side plate The ceiling-side runner is attached to the horizontal plate of the beam by sandwiching.
A runner fixture according to the present invention is a runner fixture for attaching a ceiling-side runner having a long plate and side plates extending vertically in one direction from both side edges in the width direction of the long plate to a horizontal plate of a beam. The substrate, a pair of beam sandwiching pieces provided to extend in one direction from the substrate, and a pair of runner sandwiching pieces provided to extend in a direction opposite to the one direction from the substrate. In a state where the upper surface is set to face the lower surface of the horizontal plate of the beam, one beam sandwiching piece is positioned on the upper surface of the horizontal plate of the beam via one edge in the width direction of the horizontal plate of the beam. As a result, one beam sandwich piece positioned on the upper surface of the horizontal plate of the beam and the substrate sandwich one end edge side of the horizontal plate, and the other beam sandwich piece passes through the other end edge of the horizontal plate of the beam in the width direction. The horizontal plate of the beam by being positioned on the upper surface of the horizontal plate of the beam The other side of the horizontal plate is sandwiched between the other beam sandwiching piece located on the upper surface and the substrate, and the ceiling side runner is long with the concave opening formed between the side plates facing each other in parallel facing downward In the state where the upper surface of the scale plate is installed facing the lower surface of the substrate, one runner clip piece extends downward along the outer surface of one side plate of the ceiling side runner and passes through the lower end of one side plate. Is positioned on the inner surface of one side plate, and sandwiches one side plate, and the other runner clip piece extends downward along the outer surface of the other side plate of the ceiling side runner to extend the lower end of the other side plate. A ceiling-side runner is attached to the horizontal plate of the beam by sandwiching the other side plate by being positioned on the inner surface of the other side plate via
The substrate includes an upper substrate, a lower substrate, and a connecting plate that connects the upper substrate and the lower substrate, and the pair of beam sandwiching pieces are provided to extend in one direction from the upper substrate, and the pair of runner sandwiching pieces are It is also characterized by being provided so as to extend in the opposite direction from the lower substrate.
The substrate is directed to extend in a direction away from the lower substrate, a pair of connecting pieces provided to extend in one direction from both side edges of the lower substrate, and upper ends of the pair of connecting pieces, respectively. A pair of upper and lower substrates parallel to each other, a pair of beam sandwich pieces extending in one direction from each upper substrate, and a pair of runner sandwich pieces extending in the opposite direction from the lower substrate. It is also characterized.
The beam sandwich piece is provided with a folding assisting portion in the vicinity of the boundary with the substrate or the upper substrate for making it easier to bend the beam sandwich piece to the upper surface side of the horizontal plate of the beam, and the runner sandwich piece is the tip side of the runner sandwich piece. The folding auxiliary part for facilitating the folding to the inner surface side of the side plate of the ceiling runner is at a predetermined position away from the lower surface of the substrate or the lower substrate by a length corresponding to the height dimension of the side plate of the ceiling runner. It also has a feature.

According to the runner fitting according to the present invention, since the board, the pair of beam sandwiching pieces, and the pair of runner sandwiching pieces are provided, the ceiling-side runner can be formed only by bending the beam sandwiching piece and the runner sandwiching piece. A runner fitting that can be easily attached to the beam is obtained.
The substrate includes an upper substrate, a lower substrate, and a connecting plate, and a pair of beam sandwiching pieces are provided to extend in one direction from the upper substrate, and a pair of runner sandwiching pieces are provided to extend in the opposite direction from the lower substrate. Therefore, when the ceiling runner is attached to the horizontal plate of the beam by the runner installation, a gap is formed between the lower surface of the horizontal plate of the beam and the upper surface of the long plate of the ceiling side runner. It becomes possible to spray a fireproof coating material on the lower surface of the horizontal plate, and it is easy to construct a fireproof specification boundary wall base.
The board includes a lower board, a pair of connecting pieces, and a pair of upper boards, and the pair of beam sandwiching pieces is provided to extend in one direction from each upper board, and the pair of runner sandwiching pieces is opposite to the lower board. Because it is provided to extend in the direction, the load applied to the runner sandwich piece can be supported by the horizontal plate below the beam via the beam sandwich piece provided above both sides of the runner sandwich piece, and the stable field wall A foundation can be constructed. In addition, when the ceiling-side runner is attached to the horizontal plate of the beam by the runner installation, a gap is formed between the lower surface of the horizontal plate of the beam and the upper surface of the long plate of the ceiling-side runner. It becomes possible to spray a fire-resistant coating material on the lower surface of the board, and a fire-resistant boundary wall base can be easily constructed.
Since the beam pinching piece and the runner pinching piece each have the bending assisting portion, a runner fitting with good workability can be obtained.

Best form 1
1 to 4 show the best mode 1, FIG. 1 shows a runner fitting 1, FIG. 2 shows a state in which a ceiling runner 4 is attached to the beam 5 by the runner fitting 1, and FIG. The runner attachment method using the attachment 1 is shown, and FIG. 4 shows the ground wall base structure.

With reference to FIG. 4, the foundation structure of the field wall will be described. The ground wall base structure that separates the dwelling units of a continuous house such as a condominium or a building includes a floor-side runner 2, a boundary between the wall walls 3, a ceiling-side runner 4, a beam 5, and a runner attachment 1.
The floor-side runner 2 is a long metal plate formed in a concave cross section having a long plate 25a and both side edges 28a in the width direction of the long plate 25a; side plates 26a; 26a extending in one direction from 28a. It is a thing. The floor-side runner 2 is disposed such that a recess opening 27a formed between a pair of side plates 26a and side plates 26a facing in parallel with each other faces upward, and the long plate 25a is a base top end or a steel joist. Are fixed to the field wall foundation 30 by anchors such as anchor bolts and scissors (not shown).
The beam 5 includes a vertical substrate 20, an upper horizontal plate 21 provided at the upper end of the vertical substrate 20, and a lower horizontal plate 22 provided at the lower end of the vertical substrate 20. (Non-illustrated beam) formed of long steel (so-called I-shaped steel) or long steel having a H-shaped cross section (so-called H-shaped steel), with both ends in the longitudinal direction being provided on an unillustrated wall substrate perpendicular to the longitudinal direction. Concatenated with
The ceiling-side runner 4 has the same configuration as the floor-side runner 2. That is, it is a metal long object formed in a cross-sectional concave shape including a long plate 25 and a side plate 26 extending in one direction from both side edges 28 in the width direction of the long plate 25. The ceiling-side runner 4 is arranged such that a recess opening 27 formed between a pair of side plates 26 and the side plates 26 facing in parallel with each other faces downward, and the runner fitting 1 lowers the horizontal of the lower side of the beam 5. Attached to the plate 22.
The lower end portion 29 of the inter-wall wall column 3 is fitted in the recess of the floor-side runner 2 attached to the field wall foundation 30 by the fixture so that the recess opening 27a faces upward, and the runner so that the recess opening 27 faces downward. By inserting the upper end portion 31 of the inter-field wall column 3 into the recess of the ceiling-side runner 4 attached to the horizontal plate 22 below the beam 5 by the fixture 1, the inter-wall column 3 is installed vertically. The field wall base 1a is constructed by arranging a plurality of the boundary walls 3 with an interval of, for example, about 300 mm.

  With reference to FIG. 1, the structure of the runner fixture 1 is demonstrated. The runner fixture 1 includes a substrate 6, a pair of beam sandwiching pieces 7 provided so as to extend in one direction from the substrate 6, and a pair of runners provided so as to extend in a direction opposite to the one direction from the substrate 6. And a clip piece 8. The runner fixture 1 includes a pair of beam sandwiching pieces 7 and a substrate 6 sandwiching both ends 33; 35 in the width direction of the horizontal plate 22 of the beam 5 and a pair of runner sandwiching pieces 8 serving as both the ceiling runner 4. It is a metal fitting for attaching the ceiling side runner 4 to the horizontal plate 22 of the beam 5 by being bent at the position of the lower end 48 of the side plate 26; 26 and sandwiching the outer surface 47 and the inner surface 49 of the side plate 26.

  The substrate 6 includes a rectangular lower substrate 9, a pair of upper substrates 10; 10 provided above both sides of the lower substrate 9, and a connecting plate 12; 12 that connects the lower substrate 9 and the upper substrate 10. . The rectangular lower substrate 9 and the rectangular upper substrate 10 face each other in parallel in the longitudinal direction of the horizontal plate 22 of the beam 5 and in parallel to each other in the width direction of the horizontal plate 22 of the beam 5. A pair of other side edges. The pair of connecting plates 12; 12 are provided so as to extend in one direction from the pair of one side edges 13a; 13a of the lower substrate 9. The pair of upper substrates 10; 10 are provided so as to extend from the upper end edges 16 of the pair of connecting plates 12; 12 in directions away from each other and to face the lower substrate 9 in parallel. That is, the substrate 6 includes one lower substrate 9, two connecting plates 12 and two upper substrates 10 provided at a predetermined interval in the longitudinal direction of the horizontal plate 22 of the beam 5.

  The pair of beam sandwiching pieces 7; 7 are provided so as to extend in one direction from the pair of other side edges 17; 17 of the upper substrate 10. The pair of beam sandwiching pieces 7 is provided on each of the pair of upper substrates 10. As shown in FIG. 2, in the state where the upper surface 18 of the upper substrate 10 is disposed so as to be in contact with and opposed to the lower surface 32 of the horizontal plate 22 of the beam 5, one of the beam sandwiching pieces 7 is sandwiched. The piece 7a is positioned on the upper surface 34 of the horizontal plate 22 of the beam 5 by being positioned on the upper surface 34 of the horizontal plate 22 of the beam 5 via one end edge 33 of the horizontal plate 22 of the beam 5 in the width direction. The beam sandwiching piece 7a and the substrate 6 in contact with the lower surface 32 of the horizontal plate 22 of the beam 5 sandwich the one edge 33 side of the horizontal plate 22, and the other beam sandwiching piece 7b is the width of the horizontal plate 22 of the beam 5. The other beam sandwich piece 7 positioned on the upper surface 34 of the horizontal plate 22 of the beam 5 and the horizontal plate of the beam 5 by being positioned on the upper surface 34 of the horizontal plate 22 of the beam 5 via the other end edge 35 in the direction. The other edge 35 side of the horizontal plate 22 is sandwiched between the substrate 6 in contact with the lower surface 32 of the plate 22. In this way, the horizontal plate is composed of the pair of beam sandwiching pieces 7 a (7) and 7 b (7) positioned on the upper surface 34 of the horizontal plate 22 of the beam 5 and the substrate 6 in contact with the lower surface 32 of the horizontal plate 22 of the beam 5. By sandwiching 22, the runner fitting 1 is attached to the horizontal plate 22 of the beam 5.

  The beam sandwiching piece 7 includes a bending assisting portion 40 for easily folding the beam sandwiching piece 7 toward the upper surface 34 side of the horizontal plate 22 of the beam 5 in the vicinity of the boundary with the upper substrate 10. For example, the beam sandwiching piece 7 is formed as a bending auxiliary portion 40 having a narrow lateral width at a portion spaced upward from the upper surface 18 of the upper substrate 10 by a length corresponding to the plate thickness of the horizontal plate 22 of the beam 5. Since the beam sandwiching piece main body 7t having a width wider than the width of the bending assisting part 40 is provided above the auxiliary part 40, the beam sandwiching piece main body 7t is easily bent by the bending assisting part 40, and workability is improved. It becomes a good runner fixture 1.

  The pair of runner clip pieces 8; 8 are provided so as to extend in a direction opposite to one direction from the pair of other side edges 14 of the lower substrate 9. As shown in FIG. 2, in a state where the ceiling-side runner 4 is installed so that the upper surface 45 of the long plate 25 is in contact with the lower surface 46 of the lower substrate 9 with the recess opening 27 facing down, One runner pinching piece 8 a of the pieces 8 extends downward along the outer surface 47 of the one side plate 26 of the ceiling side runner 4 and passes through the lower end 48 of the one side plate 26 to the one side plate 26. By being positioned on the inner surface 49, one side plate 26 is sandwiched, and the other runner sandwich piece 8 b extends downward along the outer surface 47 of the other side plate 26 of the ceiling side runner 4 to extend the other side plate 26. The other side plate 26 is sandwiched by being positioned on the inner surface 49 of the other side plate 26 via the lower end 48 thereof. Thus, by sandwiching the side plate 26 so as to cover the outer surface 47, the lower end 48, and the inner surface 49 of the pair of side plates 26 of the ceiling-side runner 4 by the pair of runner sandwiching pieces 8a (8); 8b (8), A ceiling-side runner 4 is attached to the runner fixture 1.

  The runner sandwich piece 8 has a folding auxiliary portion 50 for facilitating the bending of the tip 52 of the runner sandwich piece 8 toward the inner surface 49 side of the side plate 26 of the ceiling runner 4 from the lower surface 46 of the lower substrate 9 to the ceiling runner. 4 is provided at a predetermined position separated by a length corresponding to the height dimension of the side plate 26. The folding auxiliary portion 40 is formed by the plurality of through holes 51 formed in the runner sandwich piece 8 so as to be aligned in the horizontal direction at a predetermined position of the runner sandwich piece 8, for example. The tip 52 side of the auxiliary portion 50 is easily bent by the bending auxiliary portion 50, and the runner attachment 1 with good workability is obtained.

  With reference to FIG. 3, the attachment method to the beam 5 of the ceiling side runner 4 using the runner attachment 1 is demonstrated. The upper surface 18 of the upper substrate 10 is placed on the lower surface of the horizontal plate 22 of the beam 5 so that the pair of beam sandwiching pieces 7 provided on each upper substrate 10 sandwich the side edges 33; 35 in the width direction of the horizontal plate 22 of the beam 5. Press to 32. In this state, the beam sandwiching piece 7 is bent by the bending auxiliary portion 40 and the beam sandwiching piece main body 7t; 7t is rotated in the direction of the upper surface 34 of the horizontal plate 22. Thereby, the runner fixture 1 is attached to the horizontal plate 22 of the beam 5 by the horizontal plate 22 of the beam 5 being sandwiched between the upper substrate 10 and the beam sandwiching piece 7. Next, the ceiling-side runner 4 is inserted between the pair of runner sandwiching pieces 8; 8 provided on the lower substrate 9 with the recess opening 27 facing downward, and the length of the ceiling-side runner 4 is extended to the lower surface 46 of the lower substrate 9. The upper surface 45 of the scale plate 25 is pressed. In this state, the runner sandwich piece 8 is bent by the bending assisting part 50 and the tip 52 side of the runner sandwich piece 8 is rotated in the direction of the inner surface 49 of the side plate 26 of the ceiling runner 4. Thereby, the ceiling-side runner 4 is attached to the runner fixture 1 by the side plate 26 of the ceiling-side runner 4 being sandwiched between the runner sandwich pieces 8. In other words, the runner fixture 1 is attached to the horizontal plate 22 by sandwiching the lower horizontal plate 22 of the beam 5 between the beam sandwich piece 7 and the upper substrate 10, and the side plate 26 of the ceiling side runner 4 by the runner sandwich piece 8. As a result, the ceiling-side runner 4 is attached to the runner attachment 1, and thus the ceiling-side runner 4 is attached to the horizontal plate 22 of the beam 5 by the runner attachment 1.

  The substrate 6 of the runner fixture 1 includes a lower substrate 9, a pair of upper substrates 10 provided above both sides of the lower substrate 9, and a connecting plate 12 that connects the lower substrate 9 and the upper substrate 10. By providing, as described above, the gap S (between the lower surface 32 of the horizontal plate 22 of the beam 5 and the upper surface 45 of the long plate 25 of the ceiling-side runner 4 which are attached to each other by the runner fixture 1. 2; see FIG. 4), it is possible to spray the fire-resistant coating material on the lower surface 32 of the horizontal plate 22 on the lower side of the beam 5 by using the gap S. The base 1a can be easily constructed.

According to the runner attachment 1 according to the best mode 1, the runner attachment 1 that can easily attach the ceiling-side runner 4 to the beam 5 by only bending the beam sandwich piece 7 and the runner sandwich piece 8 is obtained. .
According to the runner fixture 1 according to the best mode 1, the beam sandwiching pieces 7; 7 are provided above both sides of the runner sandwiching piece 8, so that the load applied to the runner sandwiching piece 8 is sandwiched between the beams on both sides of the runner sandwiching piece 8. It becomes a structure that can be supported by the horizontal plate 22 below the beam 5 through the piece 7, and a stable field wall base 1a can be constructed.
According to the runner fitting 1 according to the best mode 1, the gap S is formed between the lower surface 32 of the horizontal plate 22 of the beam 5 and the upper surface 45 of the long plate 25 of the ceiling-side runner 4. It becomes possible to spray a fireproof covering material on the lower surface 32 of the horizontal plate 22, and the fire wall-resistant boundary wall base 1 a can be easily constructed.
According to the runner fixture 1 according to the best mode 1, since the beam pinching piece 7 and the runner pinching piece 8 each include the bending assisting portions 40; 50, the runner fitting 1 having good workability can be obtained.

Best form 2
As shown in FIG. 5, the board | substrate 6 may be the runner fixture 1 formed with the one board | substrate 6 of rectangular shape. That is, the rectangular substrate 6 includes a pair of one side edges 13 facing each other in the longitudinal direction of the horizontal plate 22 of the beam 5 and a pair of other side edges 14 facing each other in the width direction of the horizontal plate 22 of the beam 5. The beam sandwiching piece 7 having the same shape as the best mode 1 is provided so as to extend in one direction from both end portions 80; 80 in the longitudinal direction of the pair of other side edges 14 of the substrate 6, and the best mode 1 is a runner fixture 1 having a configuration in which a runner sandwiching piece 8 having the same shape as 1 is provided so as to extend in a direction opposite to one direction from a central portion 81 in the longitudinal direction of a pair of other side edges 14 of the substrate 6. May be.
According to the runner fixture 1 according to the best mode 2, the runner fixture 1 that can easily attach the ceiling-side runner 4 to the beam 5 by only bending the beam sandwich piece 7 and the runner sandwich piece 8 is obtained. .
According to the runner fixture 1 according to the best mode 2, since the beam sandwiching pieces 7 are provided on both sides of the runner sandwiching piece 8, the load applied to the runner sandwiching piece 8 is passed through the beam sandwiching pieces 7 on both sides of the runner sandwiching piece 8. Thus, the structure can be supported by the horizontal piece on the lower side of the beam 5, and a stable field wall base 1a can be constructed.

Best form 3
In the best mode 1; 2, the runner attachment 1 having a configuration including two pairs of beam sandwiching pieces 7 is shown. However, the runner attachment 1 having a configuration including only one pair of beam sandwiching pieces 7 may be used. Good.
According to the runner attachment 1 according to the best mode 3, the runner attachment 1 that can easily attach the ceiling-side runner 4 to the beam 5 by only bending the beam sandwich piece 7 and the runner sandwich piece 8 is obtained. .

  If the shape of the beam pinching piece 7 or the runner pinching piece 8 and the configuration of the bending auxiliary portion 40; 50 can achieve the function of the beam pinching piece 7, the runner pinching piece 8, the bending auxiliary portion 40; Other than the shapes and configurations described above may be used.

The perspective view of a runner fixture (the best form 1). Sectional drawing which shows the state in which the ceiling side runner was attached to the beam with the runner attachment (best form 1). The figure which shows the runner attachment method using a runner attachment (best form 1). The figure which shows the foundation | substrate structure of a boundary wall (best form 1). The perspective view of a runner fixture (best form 2).

Explanation of symbols

1 Runner fixture, 4 Ceiling side runner, 5 Beam, 6 Substrate, 7 Beam sandwich piece,
8 runner sandwich pieces, 9 lower substrate, 10 upper substrate, 12 connecting plate, 12a connecting piece,
18 upper surface of substrate, 22 horizontal plate, 25 long plate, 26 side plate, 27 recess opening,
28 Both side edges in the width direction of the long plate, 32 The lower surface of the horizontal plate,
33 One edge in the width direction of the horizontal plate, 34 Upper surface of the horizontal plate,
35 The other edge in the width direction of the horizontal plate, 40, 50 bending assisting part, 41 near the boundary,
45 upper surface of long plate, 46 lower surface of substrate, 47 outer surface of side plate, 48 lower end of side plate,
49 Inner surface of side plate, 52 Tip of runner clip.

Claims (5)

  In a runner fitting for attaching a ceiling-side runner with a long plate and side plates extending vertically in one direction from both side edges in the width direction of the long plate to the horizontal plate of the beam, the substrate and one direction from the substrate And a pair of runner clip pieces provided to extend in a direction opposite to the one direction from the substrate, and the pair of beam clip pieces and the substrate are A pair of runner clip pieces are bent at the lower end positions of both side plates of the ceiling-side runner and sandwiched between the outer surface and the inner surface of the side plate. A runner fitting that is attached to a horizontal plate of a beam.   In a runner fitting for attaching a ceiling-side runner with a long plate and side plates extending vertically in one direction from both side edges in the width direction of the long plate to the horizontal plate of the beam, the substrate and one direction from the substrate And a pair of runner clip pieces provided to extend in a direction opposite to the one direction from the substrate, the upper surface of the substrate being the lower surface of the horizontal plate of the beam In the state of being installed so as to face each other, one beam pinching piece is positioned on the upper surface of the horizontal plate of the beam via one end edge in the width direction of the horizontal plate of the beam, and thereby on the upper surface of the horizontal plate of the beam. One edge of the horizontal plate is sandwiched between one beam sandwich piece and the substrate, and the other beam sandwich piece is placed on the upper surface of the horizontal plate of the beam via the other end edge in the width direction of the horizontal plate of the beam. The other beam pinch located on the upper surface of the horizontal plate of the beam by being positioned The upper side of the long plate faces the lower surface of the board with the other side edge of the horizontal board sandwiched between the board and the board, with the recessed openings formed between the ceiling-side runners facing the parallel side walls facing downward In the installed state, one runner clip piece extends downward along the outer surface of one side plate of the ceiling side runner and is positioned on the inner surface of one side plate via the lower end of one side plate. And the other runner sandwich piece extends downward along the outer surface of the other side plate of the ceiling side runner and passes through the lower end of the other side plate to the inner surface of the other side plate. A runner fitting, characterized in that the ceiling-side runner is attached to the horizontal plate of the beam by sandwiching the other side plate by being positioned on the runner.   The substrate includes an upper substrate, a lower substrate, and a connecting plate that connects the upper substrate and the lower substrate, and the pair of beam sandwiching pieces are provided to extend in one direction from the upper substrate, and the pair of runner sandwiching pieces are The runner attachment according to claim 1 or 2, wherein the runner attachment is provided so as to extend in an opposite direction from the lower substrate.   The substrate is directed to extend in a direction away from the lower substrate, a pair of connecting pieces provided to extend in one direction from both side edges of the lower substrate, and upper ends of the pair of connecting pieces, respectively. A pair of upper and lower substrates parallel to each other, a pair of beam sandwich pieces extending in one direction from each upper substrate, and a pair of runner sandwich pieces extending in the opposite direction from the lower substrate. The runner attachment according to claim 1 or claim 2, wherein   The beam sandwich piece is provided with a folding assisting portion in the vicinity of the boundary with the substrate or the upper substrate for making it easier to bend the beam sandwich piece to the upper surface side of the horizontal plate of the beam, and the runner sandwich piece is the tip side of the runner sandwich piece. The folding auxiliary part for facilitating the folding to the inner surface side of the side plate of the ceiling runner is at a predetermined position away from the lower surface of the substrate or the lower substrate by a length corresponding to the height dimension of the side plate of the ceiling runner. The runner fixture according to any one of claims 1 to 4, wherein the runner fixture is provided.

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