JP7407636B2 - Interior base fixing structure and base fixtures - Google Patents

Description

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

Japanese Unexamined Patent Application Publication No. 2015-158065 (Patent Document 1) describes a mounting structure for an interior base including a wall base and a ceiling base arranged to form a corner under a beam of a building, in which a mounting hardware is attached to the beam. An interior base fixing bar extending along the beam is attached through the , and the upper end of the wall base is fixed to the lower side of the mounting surface of the interior base fixing bar, and the upper end of the mounting surface of the interior base fixing bar is It is disclosed that the ceiling base is fixed.

Japanese Unexamined Patent Publication No. 2018-150271 (Patent Document 2) discloses that in a building including a ceiling installed at a position below a beam, and a wall installed so as to intersect with the ceiling at a position below the ceiling, a ceiling holding runner made of a non-combustible material and for holding the ceiling in a position below the beam; and a wall holding runner made of a non-combustible material for holding the wall in a position below 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.

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

In order to ensure the fireproof performance of a building, the members that fix interior bases, including wall base materials and ceiling base materials, to beams must have sufficient fire resistance. In Patent Document 1, since the crosspieces are used to fix the interior base, sufficient fire resistance performance cannot be obtained, and as a result, the fire resistance performance of the building cannot be guaranteed.

On the other hand, in Patent Document 2, not only the external wall fixing hardware but also the ceiling holding runner and wall holding runner are formed of noncombustible materials such as metals, so that fireproof performance can be obtained.

However, in Patent Document 2, the ceiling holding runner is integrated with the ceiling panel and fixed to the fixed hardware with screws, so there is room for improvement in terms of workability at high places. Ta. Further, in Patent Document 1, since the wall base and the ceiling base are fixed to a common mounting surface (vertical surface), there is also the problem that positioning of each base is difficult.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide an interior base fixing structure that can improve workability.

A fixing structure for an interior base material according to an aspect of the present invention is a fixing structure for fixing an interior base material to a beam of a building, and includes a fixed hardware fixed to the beam, and an outdoor end surface of a ceiling base material fixed to the fixed hardware. A base mounting member including an indoor surface facing the base mounting member is provided, and the indoor surface of the base mounting member is provided with a level difference whose boundary is the height of the lower surface of the ceiling base material.

Preferably, the indoor surface has a first part located above the boundary and to which the ceiling base material is fixed, and a second part located below the boundary and closer to the outdoors than the first part, The furring attachment member further includes a lower surface that intersects the lower end of the second portion and to which the wall furring is secured.

Preferably, the upper surface of the wall base material is exposed to the indoor space without contacting the lower surface, and has an exposed portion facing the stepped surface of the indoor surface, and the lower end of the first portion and the upper end of the second portion. The outdoor end of the ceiling material is located between the stepped surface that intersects with the exposed portion and the exposed portion.

More preferably, the base mounting member has an open cross section, and includes a vertical plate portion constituting the first portion and the second portion, an upper plate portion that intersects with the upper end of the vertical plate portion, and an upper plate portion that intersects with the lower end of the vertical plate portion. and a lower plate portion constituting a lower surface, and the second portion is fixed to the fixed hardware by a fastening member.

In this case, it is desirable that the upper plate portion be disposed within a notch provided in the fixed hardware.

A base fixture according to an aspect of the present invention is a base fixture for fixing an interior base to a beam of a building via a fixing hardware, and includes a level difference whose boundary is the lower surface height of the ceiling base. and a lower surface to which the wall sheathing is fixed. The indoor surface has a first part located above the boundary and to which the ceiling base material is fixed, and a second part located below the boundary and on the outdoor side, and the bottom surface is located at the bottom end of the second part. intersect.

According to the present invention, workability can be improved.

1 is a sectional view showing a fixing structure of an interior base according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing the main parts of the interior base fixing structure according to the embodiment of the present invention. (A) to (C) are diagrams showing the configuration of a base mounting member (base mounting tool) in an embodiment of the present invention. FIG. 2 is a diagram schematically showing a construction procedure of a fixing structure for an interior base according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing a construction procedure of a fixing structure for an interior base according to an embodiment of the present invention. FIG. 7 is a sectional view showing a fixing structure of an interior base according to a modification of the embodiment of the present invention.

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

(Schematic configuration)
Referring to FIG. 1, a schematic configuration of an interior base fixing structure (hereinafter abbreviated as "fixing structure") 1 will be described. The fixed structure 1 is a structure in which an interior base 10 is fixed to a beam 2 of a building, and includes a fixed hardware 3 fixed to the beam 2 and a ceiling suspension runner 4 fixed to the fixed hardware 3 for attaching the interior base 10. It is equipped with 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 an H-shaped steel and includes an upper flange 21 and a lower flange 22 arranged horizontally, 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. In the following description, the direction in which the beam 2 extends is referred to as the beam direction, and the direction perpendicular to the beam 2 is referred to as the inner-outer direction. Arrow A1 (on the right side of the page) shown in FIG. 1 represents the indoor direction, and arrow A2 (on the top side of the page) represents the upward direction.

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

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

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

(fixed hardware)
With further reference to FIGS. 2 and 3, an example of the configuration of the fixed hardware 3 will be described. FIG. 2 is an exploded perspective view of the main parts of the fixing structure 1, looking up from below. Arrow A3 shown in FIG. 2 represents the beam direction. FIG. 3 is a diagram showing the configuration of the fixing hardware 3, in which (A) is a side view, (B) is a front view seen from direction IIIB (indoor side) in FIG. 2, and (C) is a view from direction IIIC in FIG. It is a bottom view seen from (lower side).

As shown in FIG. 1, each fixed hardware 3 is fixed to the lower flange 22 of the beam 2 with bolts 91. The fixed hardware 3 is arranged so that its entirety falls within the range of the beam 2, and specifically, it is arranged within the range between the beam core C and the indoor edge of the lower flange 22. .

The fixed hardware 3 includes a top surface portion 31 that contacts the lower surface of the beam 2, a support portion 33 that extends parallel to the beam 2 in the vertical direction (vertical direction), and a support portion 33 that extends downward from the top surface portion 31 and intersects (perpendicularly) the support portion 33. ). The top 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.

A through hole 310 for passing a bolt 91 is provided in the top surface portion 31 . In this 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 rectangle having long sides that match the beam direction and short sides that match the inside and outside directions.

The hanging portion 32 is disposed perpendicular to the center 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. 3(B), the top surface portion 31 and the hanging portion 32 are connected in a T-shape. As shown in FIGS. 1 and 3A, the planar shape of the hanging portion 32 roughly consists of long sides that coincide in the up-down direction (vertical direction) and short sides that coincide in the inside-outside direction (horizontal direction). It has a rectangular shape with sides. The hanging portion 32 is connected to the top portion 31 by, for example, welding.

As shown in FIG. 3(A), a notch 320, preferably approximately U-shaped (U-shaped), is provided at the center of the indoor end surface (long side) of the hanging portion 32. . The cutout portion 320 is defined by a bottom surface 320a and a top surface 320b that extend substantially horizontally along the inside and outside directions, and a vertical surface 320c that extends substantially vertically. Note that the position of the indoor end surface 321 above the notch 320 may protrude toward the indoor side from the position of the indoor end surface 322 below the notch 320.

The support portion 33 is connected to the indoor end surface 322 of the hanging portion 32 in a perpendicular state. The support portion 33 is also formed in a substantially rectangular shape, and typically has a rectangular shape having short sides that coincide with the up-down direction (vertical direction) and long sides that coincide with the beam direction (horizontal direction). . The support part 33 is also connected to the depending part 32, for example by welding.

The vertical dimension (short side length) of the support portion 33 is approximately the same as the vertical dimension of the indoor end surface 322. That is, the heights of the upper end surface and the lower end surface of the support part 33 correspond to the heights of the upper end and the lower end of the indoor end surface 322, respectively. Therefore, the bottom surface 320a of the notch 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. 3(B) and 3(C), the support portion 33 is connected to the hanging portion 32 at the center in the longitudinal direction (beam direction). Therefore, the fixed hardware 3 is symmetrical when viewed from the front side.

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

The ceiling hanging runner 4 has a substantially U-shaped (U-shaped) cross section that opens toward the outdoors. That is, the ceiling suspended runner 4 has an upper plate part 41 and a lower plate part 42 that are parallel to each other, and a vertical plate part 43 that extends in the vertical direction between the indoor end parts of the upper plate part 41 and the lower plate part 42. The upper plate part 41 and the lower plate part 42 are arranged horizontally, and the vertical plate part 43 is arranged vertically. The ceiling suspension runner 4 is formed by bending a thin plate multiple times. The plate thickness of the ceiling suspended runner 4 is 0.4 mm or more.

In this embodiment, a step is provided in the vertical plate portion 43 facing the outdoor 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. The second portion 432 is located closer to the outdoors than the first portion 431. As shown in FIGS. 1 and 2, in the installed 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 placed away from the support portion 33 in the indoor direction. . That is, the first portion 431 is a contact portion that comes into contact with the support portion 33 , and the second portion 432 is a non-contact portion that does not come into contact with the support portion 33 . The stepped 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 such that a corner portion between the second portion 432 of the vertical plate portion 43 and the lower plate portion 42 comes into contact with the lower end portion of the support portion 33. Therefore, the back surface of the second portion 432 contacts the surface (indoor surface) of the support section 33, and the back surface (top surface) of the lower plate section 42 contacts the lower end surface of the support section 33 and the lower end surface of the hanging section 32. ing.

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

Note that, as shown in FIG. 4(A) 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. 4(B), the height L3 of the first portion 431 is preferably larger than the height L4 of the second portion 432. The height L4 of the second portion 432 may be slightly larger (approximately 1 mm to 5 mm) than the thickness L5 of the ceiling surface material 60.

The upper plate part 41 is arranged so as to fit into the notch part 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 part 320. In other words, in the attached state, the cutout portion 320 receives the upper plate portion 41. Although the upper plate part 41 is typically arranged in a non-contact state with both the bottom surface 320a and the top surface 320b of the cutout part 320, it may be in contact with either one of the surfaces.

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

As described above, in this embodiment, the fixing hardware 3 and the ceiling hanging runner 4 are fixed using metal fastening members such as bolts 91 or screws 92, and the fixing hardware 3 and the ceiling hanging runner made of noncombustible materials are fixed. The thickness of the runner 4 is greater than or equal to the reference value. Therefore, the fixed structure 1 according to the present embodiment satisfies fireproof performance.

(Construction method)
A method of constructing the fixing structure 1 according to the present embodiment will be described with reference to FIGS. 4 and 5.

Referring to FIG. 4A, first, a plurality of fixing hardware 3 is 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 fixed hardware 3, and the bolt 91 is tightened and fixed with the nut 95.

Next, the ceiling hanging runner 4 is fixed to the fixed hardware 3. Specifically, as shown in FIGS. 4(A) and 4(B), the worker lifts the ceiling suspension runner 4 so that the opening faces outdoors, and then attaches the support portion 33 of the fixed hardware 3 to the ceiling suspension runner. 4 and fix it to the support part 33 with screws 92. Since the ceiling suspension runner 4 in this embodiment has an open cross section, when it is fixed with the screws 92, the corner part of the lower plate part 42 and the vertical plate part 43 (second portion 432) of the ceiling suspension runner 4 will hang down. It can be positioned so as to come into contact with the lower end surface of the portion 32 and the lower end surface of the support portion 33.

The screws 92 are screwed into the second portion 432 of the vertical plate portion 43 and the support portion 33 from the indoor side. In this case, the worker can tighten the screws 92 by applying his or her body weight, so that the workability is improved compared to the case where the worker works upward from the bottom side.

Here, the hanging portion 32 of the fixed hardware 3 is provided with the cutout portion 320 as described above. Therefore, when positioning the ceiling-suspended runner 4, the horizontal portion P1 including the bottom surface 320a of the notch 320 can be used as a temporary placement location for the ceiling-suspended 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 screws 92, the worker temporarily places the upper plate part 41 on the bottom surface 320a of the notch 320 and the upper end surface of the support part 33, and then fixes the ceiling suspension runner 4. can be temporarily placed. Therefore, according to the present embodiment, the positioning and fixing work of the long ceiling hanging runner 4 at a high place can be easily performed.

Once the ceiling hanging runner 4 is fixed, the wall runner 5 is fixed from below to the lower plate part 42 of the ceiling hanging runner 4 with screws 93, as shown in FIG. 4(B). The wall runner 5 is an elongated member having a U-shaped cross section, and includes a pair of downward flanges 51 and 52 and a connecting portion 53 that connects the flanges 51 and 52. The wall runner 5 is fixed to the ceiling suspended runner 4 at a connecting portion 53.

When the wall runner 5 is fixed with the screws 93, the wall runner 5 is arranged such that the indoor end thereof protrudes further indoors than the second portion 432 of the vertical plate portion 43. That is, as shown in FIG. 5(A), the indoor end of the upper surface of the wall runner 5, that is, the upper surface portion P2 of the indoor end of the connecting portion 53 is arranged so as to be exposed to the indoor space. . In this embodiment, the line of the collar 52 is positioned so as to substantially match the line of the first portion 431 of the vertical plate portion 43. In this case, the length L6 of the upper surface portion P2 in the inner and outer directions is equal to the step L1 between the first portion 431 and the second portion 432 (the length of the stepped surface 433 in the inner and outer directions), and the screw passing through the second portion 432 is It is preferable that the thickness is larger than the thickness L2 of the head of No. 92, and more than twice the thickness L2.

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

When fixing with the screws 94, the line of the lower surface 60b of the ceiling panel 6 is positioned so as to match 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 facing the outdoor end surface of the ceiling panel (the surface including the mounting surface of the ceiling panel) as in the past. can.

Further, as described above, the head of the screw 92 that fixes the ceiling hanging runner 4 to the fixed hardware 3 is located on the outdoor side of the first part 431 of the vertical plate part 43, and Since it is accommodated 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 heads of the screws 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 top surface (upper plate portion 41) of the ceiling suspension runner 4 in the installed state, it is possible to level the ceiling panel 6 when fixing with the screws 94. It can be done more easily.

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

When 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 end of the wall runner 5 is exposed to the indoor space. Further, the height L4 of the second portion 432 of the vertical plate portion 43 of the ceiling suspended runner 4 is slightly larger than the thickness L5 of the ceiling surface material 60. Therefore, the outdoor end 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 section 43, and the outdoor end of the ceiling surface material 60 is The fixing work can be performed while the wall runner 5 is resting on the upper surface portion P2 of the wall runner 5. Therefore, it is possible to safely and easily fix the ceiling panel material 60, which is a heavy object.

After the work of fixing the ceiling material 60 is completed, the wall material 50 is fixed to the studs 54. As shown in FIG. 1, the wall material 50 is fixed with its upper end surface in contact with or close to the lower surface of the ceiling material 60. Note that the order of construction of the wall material 50 and the ceiling material 60 may be reversed.

As explained above, according to the fixing structure 1 and the construction method according to the present embodiment, construction efficiency can be improved compared to the conventional method.

(Modified example)
In the fixing structure 1 according to the above embodiment, as shown in FIG. It may be placed far away indoors. A fixing structure 1A in such a case is shown in FIG.

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

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

The accessory part 8 is a member having a substantially U-shaped cross section, and is composed of a pair of upright plate parts 81 and 82 as an upwardly facing flange, and a lower plate part 83 that connects the upright plate parts 81 and 82. The height of the vertical plate portions 81 and 82 is equal to or less than the height L4 of the second portion 432 of the vertical plate portion 43 of the main body component 7 (FIG. 4(B)). The accessory part 8 is fixed to the support part 33 of the fixed hardware 3 with screws 92, with the outdoor standing board part 81 in surface contact with the second part 432 of the vertical board part 43. That is, the upright plate portion 81 of the accessory part 8 and the second portion 432 of the vertical plate portion 43 are fastened together to the support portion 33 by the screws 92.

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

As shown in FIG. 6, also in this modification, it is preferable that the wall runner 5 is arranged such that the indoor end protrudes further indoors than the indoor standing board part 82 of the accessory part 8. . As a result, the indoor end of the upper surface of the wall runner 5, that is, the upper surface portion P3 of the indoor end of the connecting portion 53 is arranged so as to be exposed to the indoor space. The work of fixing the material 60 can be labor-saving.

(Other variations)
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 part 7) has an open cross section, but the ceiling suspension runner should not have a closed cross section. It's okay. Even if it is a ceiling suspension runner with a closed cross section, if there is a step on the indoor surface (vertical board part) facing the ceiling panel 6 whose boundary is the lower surface height of the ceiling panel 6, the level of the ceiling panel 6 may change. It can be taken out easily. In this case, the ceiling suspension runner 4 may be fixed to the fixed hardware 3 at a location other than the second portion (contact portion) 432 of the vertical plate portion 43.

On the other hand, from the viewpoint of facilitating leveling of the ceiling panel 6, it is desirable that the indoor surface of the ceiling hanging runner 4 be provided with a step, but it is not necessary to have a step. Even if there is no level difference in the vertical plate portion 43 of the ceiling suspension runner 4, by making the cross section of the ceiling suspension runner 4 open to the outdoors, the ceiling suspension runner 4 can be easily attached to the fixed hardware 3. Positioning can be facilitated.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

1, 1A Interior base fixing structure, 2 Beam, 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 Accessory parts, 10 Interior base, 31 Top section, 32 Drooping section, 33 Support section, 41 Upper panel section, 42 Lower panel section, 43 Vertical panel section, 50 Wall material, 54 Stud, 60 Ceiling panel material, 320 Notch part, 431 first part, 432 second part, 433 step surface.

Claims (6)

A fixed structure that fixes the interior foundation to the beams of the building,
a fixed hardware fixed to the beam;
a base mounting member fixed to the fixed hardware and including an indoor surface facing the outdoor end surface of the ceiling base material;
A fixing structure for an interior interior base material, wherein the interior surface is provided with a step having a lower surface height of the ceiling base material as a boundary. The indoor surface has a first part located above the boundary and to which the ceiling base material is fixed, and a second part located below the boundary and closer to the outdoors than the first part. Ori,
The interior base fixing structure according to claim 1, wherein the base mounting member further includes a lower surface that intersects with a lower end of the second portion and to which a wall base material is fixed. The upper surface of the wall base material has an exposed portion that does not contact the lower surface and is exposed to the indoor space and faces the step surface of the indoor surface,
The interior base according to claim 2, wherein an outdoor end of the ceiling surface material is disposed between a stepped surface intersecting a lower end of the first portion and an upper end of the second portion and the exposed portion. fixed structure. The base mounting member has an open cross section, and includes a vertical plate portion constituting the first portion and the second portion, an upper plate portion that intersects the upper end of the vertical plate portion, and a lower end of the vertical plate portion. and a lower plate portion that intersects and constitutes the lower surface,
The interior base fixing structure according to claim 2 or 3, wherein the second portion is fixed to the fixed hardware by a fastening member. 5. The fixing structure for an interior base of a building according to claim 4, wherein the upper plate portion is disposed within a notch provided in the fixing hardware. A base fixture for fixing an interior base to a beam of a building via a fixing hardware,
A step is provided with the height of the lower surface of the ceiling base material as a boundary, and a first part is located above the boundary and to which the ceiling base material is fixed, and a first part is located below the boundary and on the outdoor side. an indoor surface having a second portion;
and a lower surface intersecting a lower end of the second portion and to which a wall furring is secured.

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