JP2021155963A - Interior substrate fixing structure and interior substrate fixing tool - Google Patents

Abstract

To provide a fixing structure of interior substrates capable of improving workability.SOLUTION: A fixing structure (1) of an interior substrate (10) is provided with a fixing hardware (3) fixed to a beam (2) of a building and including a support part (33) extending vertically in parallel to the beam, and a substrate mounting member (4) having an open cross section including an upper plate part (41) and a lower plate part (42) fixed to the fixing hardware and parallel to each other and a vertical plate part (43) extending vertically between indoor side end parts of the upper plate part and the lower plate part. The substrate mounting member (4) is positioned so that the corner parts of the vertical plate (43) and the lower plate (42) contact the lower end of the support (33).SELECTED DRAWING: Figure 1

Description

The present invention relates to a fixing structure of an interior base and a fixture of the interior base, and in particular, a fixing structure for fixing the interior base including a wall base material and a ceiling base material to a beam of a building, and an interior base suitable for the fixing structure. Regarding fixtures.

Japanese Patent Application Laid-Open No. 2015-158065 (Patent Document 1) describes mounting hardware on a beam in an interior base mounting structure including a wall base and a ceiling base arranged so as to form a corner under a beam of a building. An interior base fixing rail that extends along the beam is attached via the beam, and the upper end of the wall base is fixed to the lower side of the mounting surface of the interior base fixing rail, and the upper side of the mounting surface of the interior base fixing rail is fixed. It is disclosed that the ceiling base is fixed.

Japanese Patent Laying-Open No. 2018-150271 (Patent Document 2) describes in a building provided with a ceiling installed at a lower position of a beam and a wall installed so as to intersect the ceiling at a lower position of the ceiling. A ceiling holding runner made of a non-combustible material for holding the ceiling at a lower position of the beam and a wall holding runner made of a non-combustible material for holding a wall at a lower position of the ceiling. It is disclosed that the ceiling holding runner is supported by the beam via the outer wall fixing hardware, and the wall holding runner is fixed to the lower part of the ceiling holding runner.

Japanese Unexamined Patent Publication No. 2015-158065 (Patent No. 6159272) Japanese Unexamined Patent Publication No. 2018-150271

In order to ensure the fire protection performance of the building, it is necessary that the members for fixing the interior base material including the wall base material and the ceiling base material to the beam have sufficient fire resistance performance. In Patent Document 1, since a crosspiece is used to fix the interior base, sufficient fire resistance cannot be obtained, and as a result, the fire resistance of the building cannot be guaranteed.

On the other hand, in Patent Document 2, not only the outer wall fixing hardware but also the ceiling holding runner and the wall holding runner are made of a non-combustible material such as metal, so that fire resistance can be obtained.

However, Patent Document 2 has a structure in which the ceiling holding runner is fixed to the fixed hardware with screws in a state of being integrated with the ceiling panel, and there is room for improvement from the viewpoint of workability in high places. rice field. Further, in Patent Document 1, since the wall base and the ceiling base are fixed to a common mounting surface (vertical surface), there is a problem that it is difficult to position each base.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a fixed structure of an interior base capable of improving workability.

The fixing structure of the interior base according to a certain aspect of the present invention is a fixing structure for fixing the interior base to a beam of a building, and is fixed to a fixed metal fitting including a support portion which is fixed to the beam and extends in the vertical direction parallel to the beam. It is provided with a base mounting member having an open cross section fixed to a hardware. The base mounting member includes an upper plate portion and a lower plate portion parallel to each other, and a vertical plate portion extending in the vertical direction between the indoor side ends of the upper plate portion and the lower plate portion, and includes the vertical plate portion and the lower plate portion. The corner portion of is positioned so as to abut the lower end portion of the support portion.

Preferably, the fixing hardware further includes a top surface portion fixed to the lower surface of the beam and a hanging portion that hangs from the top surface portion and intersects the support portion, and a notch in the hanging portion that receives the upper plate portion of the base mounting member. A part is provided.

Preferably, the vertical plate portion has a contact portion that abuts on the support portion and a non-contact portion that is located above the contact portion and does not abut on the support portion, and the non-contact portion has a non-contact portion. , The ceiling base material is fixed.

Preferably, the abutting portion is fixed to the support portion by a fastening member. In this case, it is desirable that the wall base material is fixed to the lower plate portion.

The base mounting member may include an accessory part that is fastened together with the contact portion by the fastening member, and the wall base material may be fixed to the lower surface of the accessory part.

A fixture for an interior base according to a certain aspect of the present invention is a fixture for attaching an interior base to a beam of a building, and includes a fixing hardware and a base mounting member having an open cross section. The fixing hardware includes a top surface portion fixed to the lower surface of the beam, a support portion extending in the vertical direction along the extending direction of the beam, and a hanging portion that hangs down from the top surface portion and intersects the support portion. The base mounting member includes an upper plate portion and a lower plate portion parallel to each other, and a vertical plate portion extending in the vertical direction between the indoor side ends of the upper plate portion and the lower plate portion, and includes the vertical plate portion and the lower plate portion. The corner portion of the is positioned so as to abut the lower end portion of the support portion.

According to the present invention, workability can be improved.

It is sectional drawing which shows the fixed structure of the interior base which concerns on embodiment of this invention. It is a perspective view which shows the main part of the fixed structure of the interior base which concerns on embodiment of this invention by disassembling. (A) to (C) are diagrams showing the structure of the base mounting member (base mounting tool) according to the embodiment of the present invention. It is a figure which shows typically the construction procedure of the fixed structure of the interior base which concerns on embodiment of this invention. It is a figure which shows typically the construction procedure of the fixed structure of the interior base which concerns on embodiment of this invention. It is sectional drawing which shows the fixed structure of the interior base which concerns on the modification of embodiment of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

(Outline configuration)
With reference to FIG. 1, a schematic configuration of a fixed structure (hereinafter abbreviated as “fixed structure”) 1 of an interior base will be described. The fixed structure 1 is a structure in which the interior base 10 is fixed to the beam 2 of the building, and the fixed hardware 3 fixed to the beam 2 and the ceiling suspension runner 4 fixed to the fixed hardware 3 to attach the interior base 10. And have. The interior base 10 includes a wall runner 5 as a wall base material and a ceiling panel 6 as a ceiling base material.

The beam 2 is H-section steel and includes a horizontally arranged upper flange 21 and lower flange 22 and a web 23 extending vertically between the upper flange 21 and the lower flange 22. The beam 2 has a length in the front-rear direction of the paper surface. In the following description, the extending direction of the beam 2 is referred to as a beam direction, and the direction orthogonal to the beam 2 is referred to as an inside / outside direction. The arrow A1 (right side of the paper) shown in FIG. 1 indicates the indoor direction, and the arrow A2 (upper side of the paper) indicates the upper direction.

The fixed metal fitting 3 is a piece material, and a plurality of fixed metal fittings 3 are arranged at intervals along the beam direction. The ceiling suspension runner 4 is made of metal and is a base mounting member having an open cross section extending in the beam direction. The fixing hardware 3 and the ceiling suspension runner 4 constitute a fixture for attaching the interior base 10 to the beam 2 of the building. These configuration examples will be described later.

The wall runner 5 is a member that extends in the beam direction and holds the upper end portions of the plurality of studs 54 that are pillar materials, and constitutes the base of the wall surface material 50 together with the studs 54. The wall runner 5 is fixed to the horizontal lower surface (lower plate portion 42) of the ceiling suspension runner 4. In the present embodiment, the wall runner 5 and the stud 54 are located directly below the beam 2 and are arranged in the vicinity of the line C of the web 23 of the beam 2 (hereinafter referred to as “beam core”).

The ceiling panel 6 constitutes the base of the ceiling surface material 60 such as gypsum board. The ceiling panel 6 is fixed to a vertical indoor surface (vertical plate portion 43) of the ceiling suspension runner 4.

(Fixed hardware)
A configuration example of the fixed hardware 3 will be described with reference to FIGS. 2 and 3. FIG. 2 is a perspective view showing the main part of the fixed structure 1 in an exploded manner, and shows a state of looking up from the lower side. The arrow A3 shown in FIG. 2 indicates the beam direction. 3A and 3B are views showing the configuration of the fixed hardware 3, where FIG. 3A is a side view, FIG. 3B is a front view seen from the IIIB direction (indoor side) of FIG. 2, and FIG. 3C is the IIIC direction of FIG. It is a bottom view seen from (lower side).

As shown in FIG. 1, each fixing hardware 3 is fixed to the lower flange 22 of the beam 2 with bolts 91. The fixed metal fitting 3 is arranged so that the entire fixed metal fitting 3 fits within the range of the beam 2, and specifically, the fixed metal fitting 3 is arranged within the range between the beam core C and the indoor side edge of the lower flange 22. ..

The fixed hardware 3 has a top surface portion 31 that abuts on the lower surface of the beam 2, a support portion 33 that is parallel to the beam 2 and extends in the vertical direction (vertical direction) along the beam direction, and a support portion that extends downward from the top surface portion 31. Includes a hanging 32 that intersects (orthogonally) 33. The top surface portion 31, the hanging portion 32, and the support portion 33 are formed of a steel plate having a constant thickness. The plate thickness of each part 31 to 33 of the fixed hardware 3 is 1.6 mm or more.

The top surface portion 31 is provided with a through hole 310 for passing the bolt 91. In the present embodiment, two through holes 310 are provided at intervals along the beam direction. The top surface portion 31 is typically formed in a rectangular shape (rectangular or square). As an example, the planar shape of the top surface portion 31 is a rectangular shape having a long side that coincides with the beam direction and a short side that coincides with the inside and outside directions.

The hanging portion 32 is arranged orthogonal to the central portion of the top surface portion 31 in the beam direction so that the plate thickness direction coincides with the beam direction. That is, when viewed from the front side (indoor side), as shown in FIG. 3B, the top surface portion 31 and the hanging portion 32 are connected in a T shape. As shown in FIGS. 1 and 3 (A), the planar shape of the hanging portion 32 has a long side that roughly coincides with the vertical direction (vertical direction) and a short side that coincides with the inner and outer directions (horizontal direction). It has a rectangular shape with sides. The hanging portion 32 is connected to the top surface portion 31 by welding, for example.

As shown in FIG. 3A, a substantially U-shaped (U-shaped) notch 320 is preferably provided at the center of the indoor side end face (long side) of the hanging portion 32. .. The cutout portion 320 is defined by a bottom surface 320a and a top surface 320b extending substantially horizontally along the inner and outer directions, and a vertical surface 320c extending substantially vertically. The position of the indoor side end surface 321 above the cutout portion 320 may project to the indoor side from the position of the indoor side end surface 322 below the notch portion 320.

The support portion 33 is connected to the indoor side end surface 322 of the hanging portion 32 in an orthogonal state. The support portion 33 is also formed in a substantially rectangular shape, and is typically a rectangular shape having a short side that coincides with the vertical direction (vertical direction) and a long side that coincides with the beam direction (horizontal direction). .. The support portion 33 is also connected to the hanging portion 32 by welding, for example.

The vertical dimension (short side length) of the support portion 33 is substantially the same as the vertical dimension of the indoor side end surface 322. That is, the heights of the upper end surface and the lower end surface of the support portion 33 coincide with the heights of the upper end surface and the lower end surface of the indoor side end surface 322, respectively. Therefore, the bottom surface 320a of the cutout portion 320 of the hanging portion 32 is located on the same plane as the upper end surface of the supporting portion 33, and the lower end surface of the hanging portion 32 is located on the same plane as the lower end surface of the supporting portion 33. ing.

As shown in FIGS. 3B and 3C, the support portion 33 is connected to the hanging portion 32 at the central portion in the longitudinal direction (beam direction). Therefore, the fixed hardware 3 is symmetrical when viewed from the front side.

(Ceiling suspension runner)
A configuration example of the ceiling suspension runner 4 will be described with reference to FIGS. 1 and 2.

The ceiling suspension runner 4 has a substantially U-shaped (U-shaped) cross section that opens to the outdoor side. That is, the ceiling suspension runner 4 has an upper plate portion 41 and a lower plate portion 42 parallel to each other, and a vertical plate portion 43 extending in the vertical direction between the indoor side ends of the upper plate portion 41 and the lower plate portion 42. The upper plate portion 41 and the lower plate portion 42 are arranged horizontally, and the vertical plate portion 43 is arranged vertically. The ceiling suspension runner 4 is formed by bending a plurality of thin plates. The plate thickness of the ceiling suspension runner 4 is 0.4 mm or more.

In the present embodiment, a step is provided on the vertical plate portion 43 facing the outdoor side end surface of the ceiling panel 6. Specifically, the vertical plate portion 43 has a first portion 431 that intersects with the upper plate portion 41 and a second portion 432 that intersects with the lower plate portion 42, and has a second portion via a stepped surface 433. The second portion 432 is located on the outdoor side of the first portion 431. As shown in FIGS. 1 and 2, in the mounted state, the second portion 432 is in surface contact with the support portion 33 of the fixed hardware 3, and the first portion 431 is arranged away from the support portion 33 in the indoor direction. .. That is, the first portion 431 is a contact portion that abuts on the support portion 33, and the second portion 432 is a non-contact portion that does not abut on the support portion 33. The step surface 433 is a surface that intersects the lower end of the first portion 431 and the upper end of the second portion 432.

The ceiling suspension runner 4 is positioned so that the corner portion between the second portion 432 of the vertical plate portion 43 and the lower plate portion 42 abuts on the lower end portion of the support portion 33. Therefore, the back surface of the second portion 432 comes into contact with the front surface (indoor surface) of the support portion 33, and the back surface (upper surface) of the lower plate portion 42 comes into contact with the lower end surface of the support portion 33 and the lower end surface of the hanging portion 32. ing.

The ceiling suspension runner 4 is screwed to the support portion 33 by screws 92 at the second portion 432 of the vertical plate portion 43. The first portion 431 of the vertical plate portion 43 constitutes the mounting surface of the ceiling panel 6. That is, the ceiling panel 6 is screwed to the first portion 431 from the indoor side by the screw 94. The height of the lower surface of the ceiling panel 6 substantially coincides with the position of the stepped surface 433 of the vertical plate portion 43. In other words, the vertical plate portion 43 is provided with a step with the height of the lower surface of the ceiling panel 6 as a boundary.

As shown in FIG. 4A described later, the step L1 between the first portion 431 and the second portion 432 is larger than the thickness L2 of the head of the screw 92 and is at least twice the thickness L2. Is desirable. Further, as shown in FIG. 4B, it is desirable that the height dimension L3 of the first portion 431 is larger than the height dimension L4 of the second portion 432. The height dimension L4 of the second portion 432 may be slightly larger (about 1 mm to 5 mm) than the thickness dimension L5 of the ceiling surface material 60.

The upper plate portion 41 is arranged so as to enter into the notch portion 320 of the fixed hardware 3, and is arranged within the height range of the bottom surface 320a and the top surface 320b of the notch portion 320. In other words, in the mounted state, the notch portion 320 receives the upper plate portion 41. The upper plate portion 41 is typically arranged in a non-contact state with both sides of the bottom surface 320a and the top surface 320b of the notch portion 320, but may be in contact with either one of the surfaces.

As shown in FIG. 1, the lower plate portion 42 constitutes the mounting surface of the wall runner 5. That is, the wall runner 5 is screwed to the lower plate portion 42 from below by the screw 93. The wall runner 5 is arranged so that a part of the upper surface (indoor side end portion) of the wall runner 5 is exposed to the indoor side space without contacting the lower plate portion 42 and faces the stepped surface 433 of the vertical plate portion 43. There is. The outdoor side end portion of the ceiling surface material 60 is arranged between the exposed portion of the wall runner 5 and the stepped surface 433 of the vertical plate portion 43 (space S shown in FIG. 5B).

As described above, in the present embodiment, the fixing hardware 3 and the ceiling suspension runner 4 are fixed by a metal fastening member such as a bolt 91 or a screw 92, and the fixing hardware 3 made of a non-combustible material and the ceiling suspension are suspended. The thickness of the runner 4 is equal to or greater than the reference value. Therefore, the fixed structure 1 according to the present embodiment satisfies the fire protection performance.

(Construction method)
The construction method of the fixed structure 1 according to the present embodiment will be described with reference to FIGS. 4 and 5.

With reference to FIG. 4A, first, a plurality of fixing hardware 3 are fixed to the lower flange 22 of the beam 2 with bolts 91. That is, the bolt 91 is inserted into the through hole 310 of the top surface portion 31 of the fixing hardware 3 and tightened and fixed with the nut 95.

Next, the ceiling suspension runner 4 is fixed to the fixed hardware 3. Specifically, as shown in FIGS. 4A and 4B, the operator lifts the ceiling suspension runner 4 so that the opening of the ceiling suspension runner 4 faces the outdoor side, and lifts the support portion 33 of the fixed hardware 3 to the ceiling suspension runner. It is fitted into the inside of No. 4 and fixed to the support portion 33 with a screw 92. Since the ceiling suspension runner 4 in the present embodiment has an open cross section, when the ceiling suspension runner 4 is fixed with the screw 92, the corner portion between the lower plate portion 42 and the vertical plate portion 43 (second portion 432) of the ceiling suspension runner 4 hangs down. It can be positioned so as to abut on the lower end surface of the portion 32 and the lower end surface of the support portion 33.

The screw 92 is screwed into the second portion 432 and the support portion 33 of the vertical plate portion 43 from the indoor side. In this case, since the worker can apply his / her weight to tighten the screw 92, the workability is improved as compared with the case of working upward from the lower side.

Here, the hanging portion 32 of the fixed hardware 3 is provided with a notch portion 320 as described above. Therefore, when positioning the ceiling suspension runner 4, the horizontal portion P1 including the bottom surface 320a of the notch portion 320 can be used as a temporary storage place for the ceiling suspension runner 4. The horizontal portion P1 includes a bottom surface 320a of the notch portion 320 and an upper end surface of the support portion 33. That is, before fixing the ceiling suspension runner 4 with the screw 92, the operator temporarily puts the upper plate portion 41 on the bottom surface 320a of the notch portion 320 and the upper end surface of the support portion 33, and the ceiling suspension runner 4 Can be temporarily placed. Therefore, according to the present embodiment, the positioning and fixing work of the long object ceiling suspension runner 4 at a high place can be easily performed.

When the ceiling suspension runner 4 is fixed, the wall runner 5 is fixed to the lower plate portion 42 of the ceiling suspension runner 4 from below with a screw 93 as shown in FIG. 4 (B). The wall runner 5 is a long member having a U-shaped cross section, and includes a pair of downward flanges 51 and 52 and a connecting portion 53 connecting the collars 51 and 52. The wall runner 5 is fixed to the ceiling suspension runner 4 at the connecting portion 53.

When fixed with the screw 93, the wall runner 5 is arranged so that the indoor side end portion protrudes indoor side from the second portion 432 of the vertical plate portion 43. That is, as shown in FIG. 5A, the indoor side end portion of the upper surface of the wall runner 5, that is, the upper surface portion P2 of the indoor side end portion of the connecting portion 53 is arranged so as to be exposed to the indoor side space. .. In the present embodiment, the line of the collar 52 is positioned so as to substantially coincide with the line of the first portion 431 of the vertical plate portion 43. In this case, the inner / outer length L6 of the upper surface portion P2 is equivalent to the step (inner / outer length of the step surface 433) L1 between the first portion 431 and the second portion 432, and the screw penetrating the second portion 432. It is desirable that the thickness of the head of 92 is larger than the thickness L2 and is at least twice the thickness L2.

Next, as shown in FIG. 5A, the ceiling panel 6 is fixed to the ceiling suspension runner 4 with screws 94. As shown in FIG. 2, the ceiling panel 6 is formed in a rectangular shape in a plan view by assembling a plurality of first crosspieces 61 extending in the beam direction and a plurality of second crosspieces 62 extending in the inward and outward directions. The first crosspiece 61 constituting the outdoor side end surface 60a of the ceiling panel 6 is fixed with a screw 94 from the indoor side in a state of being in surface contact with the first portion 431 of the vertical plate portion 43 of the ceiling suspension runner 4.

At the time of fixing with the screw 94, the line of the lower surface 60b of the ceiling panel 6 is positioned so as to coincide with the lower end of the first portion 431 of the vertical plate portion 43 of the ceiling suspension runner 4, that is, the boundary of the step. Therefore, it is possible to easily level the ceiling panel 6 without inking the indoor surface (the surface including the mounting surface of the ceiling panel) facing the outdoor end surface of the ceiling panel as in the conventional case. can.

Further, as described above, the head of the screw 92 fixing the ceiling suspension runner 4 to the fixed hardware 3 is located on the outdoor side of the first portion 431 of the vertical plate portion 43, and the wall runner 5 has a head. Since it is housed in the space S sandwiched between the upper surface portion P2 and the stepped surface 433 of the vertical plate portion 43, it is possible to prevent the ceiling panel 6 from interfering with the head of the screw 92 during the fixing work of the ceiling panel 6. ..

In this embodiment, a plurality of recesses 610 through which electrical wiring can be inserted are provided at the upper end of the first crosspiece 61 of the ceiling panel 6. As shown in the figure, by making the bottom surface of the recess 610 flush with the upper surface (upper plate portion 41) of the ceiling suspension runner 4 in the mounted state, the level of the ceiling panel 6 can be raised when the ceiling panel 6 is fixed with the screw 94. It can be done more easily.

By the above-mentioned construction method, the fixing of the interior base 10 including the wall runner 5 and the ceiling panel 6 is completed. The stud 54 constituting the wall base material is fitted into the wall runner 5 when, for example, the fixing work of the ceiling panel 6 is completed. The construction order of the wall runner 5 and the ceiling panel 6 may be reversed.

When the fixing of the interior base 10 is completed, the ceiling surface material 60 is fixed to the lower surface 60b of the ceiling panel 6. Here, as described above, the upper surface portion P2 of the indoor side end portion of the wall runner 5 is exposed in the indoor side space. Further, the height dimension L4 of the second portion 432 of the vertical plate portion 43 of the ceiling suspension runner 4 is slightly larger than the thickness dimension L5 of the ceiling surface material 60. Therefore, the outdoor side end portion of the ceiling surface material 60 is inserted into the space S sandwiched between the upper surface portion P2 of the wall runner 5 and the stepped surface 433 of the vertical plate portion 43, and the outdoor side end portion of the ceiling surface material 60 is inserted. Can be fixed on the upper surface portion P2 of the wall runner 5. Therefore, it is possible to safely and easily perform the fixing work of the ceiling surface material 60, which is a heavy object.

When the work of fixing the ceiling surface material 60 is completed, the wall surface material 50 is fixed to the stud 54. As shown in FIG. 1, the wall surface material 50 is fixed in a state where the upper end surface is in contact with or close to the lower surface of the ceiling surface material 60. The construction order of the wall surface material 50 and the ceiling surface material 60 may be reversed.

As described above, according to the fixed structure 1 and the construction method according to the present embodiment, the workability can be improved as compared with the conventional case.

(Modification example)
In the fixed structure 1 according to the above embodiment, as shown in FIG. 1, an example in which the wall runner 5 and the stud 54 as the wall base material are arranged in the vicinity of the beam core C has been described, but from the beam core C It may be placed apart on the indoor side. The fixed structure 1A in such a case is shown in FIG.

With reference to FIG. 6, the fixed structure 1A includes a ceiling suspension runner 4A instead of the ceiling suspension runner 4 described above. The ceiling suspension runner 4A is composed of two parts, a main body part 7 and an accessory part 8.

The main body component 7 has the same structure and configuration as the ceiling suspension runner 4 described in the above embodiment. Therefore, the main body component 7 is a member having an open cross section (substantially U-shaped cross section) having an upper plate portion 41, a lower plate portion 42, and a vertical plate portion 43 provided with a step.

The accessory part 8 is a member having a substantially U-shaped cross section, which is composed of a pair of standing plate portions 81 and 82 as upward flanges and a lower plate portion 83 connecting the standing plate portions 81 and 82. The height dimension of the standing plate portions 81 and 82 is equal to or less than the height dimension L4 (FIG. 4B) of the second portion 432 of the vertical plate portion 43 of the main body component 7. The accessory part 8 is fixed to the support portion 33 of the fixing hardware 3 by the screw 92 in a state where the standing plate portion 81 on the outdoor side is in surface contact with the second portion 432 of the vertical plate portion 43. That is, the standing plate portion 81 of the accessory component 8 and the second portion 432 of the vertical plate portion 43 are jointly fastened to the support portion 33 by the screw 92.

The lower plate portion 42 of the main body component 7 and the lower plate portion 83 of the accessory component 8 are arranged flush with each other. As a result, the lower surface of the ceiling suspension runner 4 extends to the indoor side by the length of the lower plate portion 83 of the accessory component 8 as compared with the above embodiment. Therefore, by fixing the wall runner 5 to the lower plate portion 83 of the accessory part 8 with the screw 93, the wall runner 5 can be arranged at a position away from the beam core C. In the mounted state, the outdoor side end surface of the ceiling surface material 60 is arranged so as to face the indoor side standing plate portion 82 of the accessory part 8.

As shown in FIG. 6, in this modified example as well, it is desirable that the wall runner 5 is arranged so that the indoor side end portion protrudes to the indoor side from the indoor side standing plate portion 82 of the accessory part 8. .. As a result, the indoor side end portion of the upper surface of the wall runner 5, that is, the upper surface portion P3 of the indoor side end portion of the connecting portion 53 is arranged so as to be exposed to the indoor side space. The labor for fixing the material 60 can be saved.

(Other variants)
From the viewpoint of facilitating positioning when fixing the ceiling suspension runner 4 to the fixed hardware 3, it is desirable that the ceiling suspension runner 4 (main body component 7) has an open cross section, but the ceiling suspension runner has a closed cross section. You may. Even if it is a ceiling suspension runner with a closed cross section, if a step is provided on the indoor surface (vertical plate portion) facing the ceiling panel 6 with the height of the lower surface of the ceiling panel 6 as a boundary, the level of the ceiling panel 6 is provided. It can be easily put out. In this case, the ceiling suspension runner 4 may be fixed to the fixing hardware 3 at a position other than the second portion (contact portion) 432 of the vertical plate portion 43.

On the contrary, from the viewpoint of facilitating the leveling of the ceiling panel 6, it is desirable that the indoor surface of the ceiling suspension runner 4 is provided with a step, but the step may not be provided. Even if there is no step in the vertical plate portion 43 of the ceiling suspension runner 4, by making the cross section of the ceiling suspension runner 4 an open cross section that opens to the outdoor side, the ceiling suspension runner 4 can be attached to the fixed hardware 3. Positioning can be facilitated.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1,1A Fixed structure of interior base, 2 Beams, 3 Fixed hardware, 4,4A Ceiling suspension runner (base mounting member), 5 Wall runner (wall base material), 6 Ceiling panel (ceiling base material), 7 Main body parts, 8 Accessories, 10 Interior base, 31 Top surface, 32 Hanging, 33 Support, 41 Upper plate, 42 Lower plate, 43 Vertical plate, 50 Wall material, 54 Stud, 60 Ceiling surface material, 320 Notch Part, 431 first part, 432 second part, 433 stepped surface.

Claims (6)

It is a fixed structure that fixes the interior base to the beams of the building.
Fixing hardware including a support portion fixed to the beam and extending in the vertical direction parallel to the beam, and
Base mounting with an open cross section including an upper plate portion and a lower plate portion fixed to the fixing hardware and parallel to each other, and a vertical plate portion extending in the vertical direction between the upper plate portion and the indoor side end portion of the lower plate portion. Equipped with parts,
The base mounting member has a fixed structure of an interior base in which a corner portion between the vertical plate portion and the lower plate portion is positioned so as to abut the lower end portion of the support portion. The fixing hardware further includes a top surface portion fixed to the lower surface of the beam, and a hanging portion that hangs down from the top surface portion and intersects the support portion.
The fixing structure for an interior base according to claim 1, wherein a notch portion for receiving the upper plate portion of the base mounting member is provided in the hanging portion. The vertical plate portion has a contact portion that abuts on the support portion and a non-contact portion that is located above the contact portion and does not abut on the support portion.
The fixing structure for an interior base according to claim 1 or 2, wherein the ceiling base material is fixed to the non-contact portion. The contact portion is fixed to the support portion by a fastening member, and the contact portion is fixed to the support portion.
The fixing structure for an interior base according to claim 3, wherein the wall base material is fixed to the lower plate portion. The base mounting member includes an accessory component that is fastened together with the contact portion by the fastening member.
The fixing structure for an interior base according to claim 3, wherein a wall base material is fixed to the lower surface of the accessory component. It is a fixture for attaching the interior base to the beam of the building.
A fixed metal fitting including a top surface portion fixed to the lower surface of the beam, a support portion parallel to the beam and extending in the vertical direction, and a hanging portion hanging from the top surface portion and intersecting the support portion.
A vertical plate portion extending in the vertical direction between the upper plate portion and the lower plate portion parallel to each other and an indoor side end portion of the upper plate portion and the lower plate portion, and the vertical plate portion and the lower plate portion. An interior base fixture that includes a base mounting member with an open cross section in which the corners are positioned so as to abut against the lower end of the support.

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