JP2024014112A - Exterior wall structure of building - Google Patents

Abstract

To obtain an exterior wall structure for a building capable of fixing an exterior wall material without damaging a design surface portion of the exterior wall material.SOLUTION: A building 10 has an exterior wall frame 28 which is attached to a skeleton frame 14 and constitutes a part of a framework of an exterior wall 26, and is provided with a penetration portion 54 penetrating in a thickness direction of the exterior wall 26 as viewed from the outdoor side, an exterior wall material 30 which has a design surface portion 36 constituting a part of a wall surface 26A of the exterior wall 26 and is arranged on the outdoor side of the exterior wall frame 28, and a push rivet 38 with a fixing portion 40A fixed to a mounting surface portion 30A of the exterior wall material 30 and a fitting portion 42 that is fitted into the penetration portion 54 by being pushed into the penetration portion 54.SELECTED DRAWING: Figure 2

Description

The present invention relates to an outer wall structure of a building.

Patent Document 1 below discloses an invention related to a building unit. In this building unit, an exterior wall panel is constructed by attaching exterior wall materials that constitute a part of the exterior wall surface of the building to an exterior wall frame.

Japanese Patent Application Publication No. 2011-202439

By the way, when attaching the exterior wall material to the exterior wall frame, screws or the like are driven into the exterior wall frame from the outdoor side of the exterior wall material, so it is conceivable that the design surface of the exterior wall material may be damaged.

The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain an exterior wall structure for a building in which exterior wall materials can be fixed without damaging the design surface of the exterior wall materials.

The exterior wall structure of a building according to the first aspect is an exterior wall that is attached to the frame of the building and forms a part of the framework of the exterior wall, and is provided with a penetration part that penetrates in the thickness direction of the exterior wall when viewed from the outdoor side. a frame, an exterior wall material that includes a decorative surface portion that constitutes a part of the wall surface of the exterior wall and is placed on the outdoor side of the exterior wall frame; and a fixing member that is fixed to a mounting surface portion of the exterior wall material on the opposite side to the design surface portion. and a fitting portion that is fitted into the penetrating portion by being pushed into the penetrating portion.

In the building exterior wall structure according to the first aspect, an exterior wall frame that constitutes a part of the skeleton of the exterior wall is attached to the building frame. An exterior wall material is disposed on the outdoor side of the exterior wall frame, and this exterior wall material includes a design surface portion that constitutes a part of the wall surface of the exterior wall of the building.

By the way, when attaching the exterior wall material to the exterior wall frame, if screws or the like are driven into the exterior wall frame from the outdoor side of the exterior wall material, it is conceivable that the design surface of the exterior wall material will be damaged.

Here, in this aspect, a penetration part is provided in the outer wall frame, and this penetration part penetrates in the thickness direction of the said outer wall when seen from the outdoor side.

On the other hand, a fixing portion of the mounting portion is fixed to the mounting surface portion of the exterior wall material on the opposite side to the design surface portion. The attachment portion includes a fitting portion that is pushed into the penetration portion of the outer wall frame and is fitted into the penetration portion.

Therefore, in this aspect, by fixing the fixed part of the mounting part to the mounting surface part of the external wall material and pushing the fixed part of the mounting part into the penetration part of the external wall frame from the outdoor side, the external wall frame can be fixed from the outdoor side of the external wall material. The exterior wall material can be attached to the exterior wall frame without driving screws, etc. into the exterior wall frame.

In the building exterior wall structure according to the second aspect, in the building exterior wall structure according to the first aspect, the mounting surface portion is provided with a recess into which the fixing portion is accommodated.

In the external wall structure of a building according to the second aspect, the mounting surface of the external wall material is provided with a recess in which the fixing part of the mounting part is accommodated, and the mounting part can be positioned using this recess.

In the building exterior wall structure according to the third aspect, in the building exterior wall structure according to the second aspect, an elastic joint is interposed between the recess and the fixing section.

In the external wall structure of a building according to the third aspect, an elastic joint is interposed between the recess provided in the external wall material and the fixing part of the attachment part. Therefore, even if the amount of deformation due to thermal expansion of the outer wall material and the amount of deformation due to thermal expansion of the attachment portion are different, the difference in these amounts of deformation can be absorbed by the deformation of the joint portion.

The external wall structure of a building according to a fourth aspect is the external wall structure of a building according to the first aspect or the second aspect, wherein the fixing part is capable of being screwed into the mounting surface part while screwing the mounting surface part. It has a threaded joint.

In the external wall structure of a building according to the fourth aspect, the fixing part of the mounting part includes a threaded part, and the threaded part can be screwed into the mounting surface part of the external wall material while screwing the mounting surface part. has been done. Therefore, in this aspect, the attachment portion can be fixed to the outer wall material without using adhesive or the like.

As explained above, the building exterior wall structure according to the first aspect has the excellent effect of being able to fix the exterior wall material without damaging the design surface of the exterior wall material.

The building exterior wall structure according to the second aspect has an excellent effect of simplifying the construction work of the building exterior wall.

The external wall structure of a building according to the third aspect has an excellent effect of suppressing the occurrence of thermal stress in the external wall material.

The building exterior wall structure according to the fourth aspect has an excellent effect of reducing the time required to construct the building exterior wall.

FIG. 2 is an exploded perspective view schematically showing the configuration of an exterior wall panel in a building to which the building exterior wall structure according to the first embodiment is applied. FIG. 2 is a cross-sectional view (a cross-sectional view taken along line 2-2 in FIG. 1) schematically showing the configuration of an external wall panel in a building to which the building external wall structure according to the first embodiment is applied. FIG. 2 is a cross-sectional view schematically showing the configuration of a boundary between an exterior wall material and an exterior wall frame in a building to which the exterior wall structure of a building according to the present embodiment is applied. FIG. 3 is a cross-sectional view schematically showing the configuration of an exterior wall material in a building to which the exterior wall structure of a building according to a second embodiment is applied. FIG. 5 is a rear view (a view taken along arrows 5 in FIG. 4) schematically showing the configuration of an exterior wall material in a building to which the exterior wall structure of a building according to a second embodiment is applied.

The outer wall structure of a building according to the first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. As shown in FIG. 1, a "building 10" to which the building exterior wall structure according to the present embodiment is applied is a unit building including a plurality of building units 12.

Note that, hereinafter, the longitudinal direction of the building 10, that is, the column direction, will be referred to as a first direction, the lateral direction of the building 10, that is, the direction between the beams will be referred to as a second direction, and the building height direction will be referred to as a third direction. Further, in each figure, a first direction is indicated by an arrow X, a second direction is indicated by an arrow Y, and a third direction is indicated by an arrow Z.

The building unit 12 is arranged with the longitudinal direction as the first direction, and includes a "body frame 14" as a body. The main body frame 14 includes pillars (not shown) erected at the four corners, a ceiling frame 16 that connects the upper ends of the pillars, and a floor frame 18 that connects the lower ends of the pillars.

The ceiling frame 16 is made of channel steel and has a pair of ceiling beams 20 that extend in a first direction and a pair of ceiling beams (not shown) that extend in a second direction and are shorter than the ceiling beams 20, and are rectangular. The outer frame is configured by being arranged in a frame shape and connected by four joints (not shown).

On the other hand, the floor frame 18 basically has the same configuration as the ceiling frame 16, and includes a pair of floor beams 22 that extend in the first direction, and a pair of floor beams 22 that extend in the second direction and are shorter than the floor beams 22. It is configured to include a pair of floor girders (not shown) and four joint parts (not shown) that connect them. Note that the ceiling frame 16 and the floor frame 18 are arranged so that the ceiling beam 20 and the floor beam 22 overlap when viewed from the building height direction.

A plurality of exterior wall panels 24 are arranged on the ceiling beam 20 and the floor beam 22 in a line in the first direction, and constitute a part of the "exterior wall 26" of the building 10.

As shown in FIG. 2, the exterior wall panel 24 includes an "exterior wall frame 28" and an "exterior wall material 30" that constitute a frame thereof.

The outer wall frame 28 constitutes a part of the skeleton of the outer wall 26, and has a plurality of horizontal bars 32 extending in a first direction and a pair of vertical bars 34 extending in a third direction combined in a ladder shape. It consists of:

The horizontal beam 32 is made of channel steel, and includes a pair of flange portions (not shown) spaced apart in the second direction, and a web portion (not shown) that connects these flange portions in the second direction. ing. Then, the flange portion on one side in the second direction, that is, the indoor side, of the horizontal bar 32 disposed on the uppermost side in the third direction is attached to the ceiling girder 20, and the flange portion on the indoor side of the horizontal bar 32 disposed on the lower side in the third direction is attached to the ceiling girder 20. The sections are each attached to the floor girder 22 with mounting members such as bolts (not shown).

The vertical beam 34 is made of channel steel like the horizontal beam 32, and includes a pair of flange portions 34A spaced apart in the second direction and a web portion 34B connecting these in the second direction. It is composed of: The pair of vertical bars 34 are connected in the first direction by the horizontal bars 32 described above.

On the other hand, the main portion of the exterior wall material 30 is made of ceramic siding, and is shaped like a rectangular plate with the third direction as the longitudinal direction when viewed from the second direction. This exterior wall material 30 is provided with a "design surface section 36" on the other side in the second direction, that is, on the outdoor side surface. It is constructed by pasting a molding material, and constitutes a part of the "wall surface 26A" of the outer wall 26 of the building 10.

Here, in this embodiment, the surface of the exterior wall material 30 opposite to the design surface section 36, that is, the surface on the indoor side, is the "mounting surface section 30A", and this mounting surface section 30A serves as the "push rivet 38" as the mounting section. It is distinctive in that it is attached via.

The push rivet 38 is made of resin or metal, and includes a pressing portion 40 and a “fitting portion 42”. The pressing part 40 includes a disk-shaped "fixing part 40A" and an insertion part 40B whose main part is cylindrical and whose tip is conical and is provided integrally with the fixing part 40A. It consists of

On the other hand, the fitting part 42 includes a head 42A and a cylindrical part 42B provided integrally with the head 42A. The head 42A has a disc shape, and as shown in FIG. 3, a penetration part 44 through which the insertion part 40B can be inserted is formed in the center when viewed from the thickness direction, and a penetration part 44 through which the insertion part 40B can be inserted is formed in the center. A recess 46 in which the fixing portion 40A of the pressing portion 40 is accommodated is formed in the portion.

The cylindrical portion 42B has an overall cylindrical shape with the longitudinal direction being the second direction, and is provided with a pair of slit portions 48 that extend in the second direction and are open on the indoor side. Moreover, a plurality of protrusions (not shown) that protrude toward the shaft side of the cylinder part 42B are provided on the inner peripheral side of the cylinder part 42B.

The fixing portion 40A of the push rivet 38 configured as described above is attached to the “recess 50” provided in the attachment surface portion 30A of the outer wall material 30.

Specifically, a plurality of recesses 50 are arranged at intervals in the third direction on the peripheral edge of the outer wall material 30 on one side in the first direction or on the other side in the first direction, and are recessed toward the outdoors. This recess 50 is sized to accommodate the head 42A of the fitting part 42, and the fixing part 40A is fixed to the bottom 50A of the recess 50 via an elastic "junction 52" made of adhesive or the like. ing.

On the other hand, the flange portion 34A on the outdoor side of the vertical crosspiece 34 of the outer wall frame 28 has a plurality of “penetrations” corresponding to the push rivets 38 by penetrating the flange portion 34A in the second direction, that is, the thickness direction of the outer wall 26. 54" is provided. The cylindrical portion 42B of the fitting portion 42 can be inserted into the penetrating portion 54.

When the push rivet 38 configured as described above is pressed from the design surface portion 36 side of the exterior wall material 30 in a state where the cylindrical portion 42B is inserted into the penetration portion 54 of the exterior wall frame 28, as shown in FIG. In addition, the pressing part 40 is moved indoors relative to the fitting part 42.

At this time, the protrusion provided on the inner peripheral side of the cylindrical portion 42B is pressed by the insertion portion 40B of the pressing portion 40, thereby expanding the diameter of the cylindrical portion 42B, and the cylindrical portion 42B is fitted into the penetrating portion 54. That will happen. That is, the fitting part 42 is fitted into the penetrating part 54 by being pushed into the penetrating part 54 via the pressing part 40 . Note that when the fitting part 42 is fitted into the penetrating part 54, the fixing part 40A of the pressing part 40 is accommodated in the recess 46 of the fitting part 42, and the head 42A of the fitting part 42 is attached to the outer wall. It fits into the recess 50 of the material 30.

<Actions and effects of this embodiment>
Next, the operation and effects of this embodiment will be explained.

In this embodiment, as shown in FIG. 1, an outer wall frame 28 that constitutes a part of the skeleton of the outer wall 26 of the building 10 is attached to the main frame 14 of the building 10. An exterior wall material 30 is disposed on the outdoor side of the exterior wall frame 28, and this exterior wall material 30 includes a design surface portion 36 that constitutes a part of the wall surface 26A of the exterior wall 26.

By the way, when attaching the exterior wall material 30 to the exterior wall frame 28, if screws or the like are driven into the exterior wall frame 28 from the outdoor side of the exterior wall material 30, the design surface portion 36 of the exterior wall material 30 may be damaged.

Here, in this embodiment, as shown in FIG. 2, a penetration part 54 is provided in the outer wall frame 28, and this penetration part 54 penetrates in the thickness direction of the outer wall 26 when viewed from the outdoor side. There is.

On the other hand, a fixing portion 40A of a push rivet 38 is fixed to a mounting surface portion 30A on the side opposite to the design surface portion 36 of the outer wall material 30. The push rivet 38 includes a fitting portion 42 that is pushed into the penetration portion 54 of the outer wall frame 28 and is fitted into the penetration portion 54 .

Therefore, in this embodiment, it is possible to fix the fixing part 40A of the push rivet 38 to the mounting surface part 30A of the outer wall material 30 and push the fixing part 40A of the push rivet 38 into the penetrating part 54 of the outer wall frame 28 from the outdoor side. can. As a result, in this embodiment, the exterior wall material 30 can be attached to the exterior wall frame 28 without driving screws or the like into the exterior wall frame 28 from the outdoor side of the exterior wall material 30.

Therefore, in this embodiment, the exterior wall material 30 can be fixed without damaging the design surface portion 36 of the exterior wall material 30.

Further, in this embodiment, a recess 50 in which the fixing portion 40A of the push rivet 38 is accommodated is provided in the mounting surface portion 30A of the outer wall material 30, and the push rivet 38 can be positioned using this recess 50. As a result, in this embodiment, the construction work of the outer wall 26 of the building 10 can be simplified.

Furthermore, in this embodiment, an elastic joint 52 is interposed between the recess 50 provided in the outer wall material 30 and the fixing part 40A of the push rivet 38. Therefore, even if the amount of deformation due to thermal expansion of the outer wall material 30 and the amount of deformation due to thermal expansion of the push rivet 38 are different, the difference in these amounts of deformation can be absorbed by the deformation of the joint portion 52. Therefore, in this embodiment, generation of thermal stress in the outer wall material 30 can be suppressed.

<Second embodiment>
Hereinafter, an outer wall structure of a building according to a second embodiment of the present invention will be described using FIGS. 4 and 5. Note that the same components as those in the first embodiment described above are given the same numbers and the explanation thereof will be omitted.

The outer wall structure of the building according to this embodiment is characterized in that "fasteners 60" are used as attachment parts instead of push rivets 38.

Specifically, the fastener 60 is configured by integrating a main body portion 62 made of resin and a “threaded portion 64” made of metal by insert molding.

The main body portion 62 includes a head portion 62A and a “fitting portion 62B”. The head 62A has a hexagonal plate shape when viewed from the second direction, and can be engaged with a predetermined socket such as an impact wrench.

On the other hand, the fitting part 62B includes a cylindrical shaft part 62B1 constituting the main part, and a plurality of locking claw parts 62B2 provided on the shaft part 62B1, By being pushed into the portion 54, it is fitted into the penetrating portion 54. Note that the shape of the fitting portion 62B may be changed as appropriate as long as it can fit into the through portion 54.

The threaded portion 64 includes a male thread portion 64A that is partially embedded in the main body portion 62 and protrudes from the main body portion 62. The male threaded portion 64A is a so-called tapping screw that can be screwed into the mounting surface portion 30A of the outer wall material 30 while tapping the mounting surface portion 30A. Note that a portion of the threaded portion 64 embedded in the main body portion 62 is provided with a rotation prevention portion (not shown), so that relative rotation between the threaded portion 64 and the main body portion 62 is restricted. .

The fastener 60 is attached to the outer wall material 30 by screwing the male threaded portion 64A into the mounting surface portion 30A until the head 62A of the main body portion 62 comes into contact with the outer wall material 30. That is, in this embodiment, the fastener 60 is fixed to the outer wall material 30 by the head portion 62A of the main body portion 62 and the threaded portion 64. Note that, hereinafter, the assembly of the head 62A and the threaded portion 64 will be referred to as a "fixing portion 66."

Further, in this embodiment, the recess 50 is not provided in the mounting surface portion 30A, and a bonding portion using an adhesive or the like is not used to fix the fastener 60 to the mounting surface portion 30A.

According to such a configuration, the fixing portion 66 of the fastener 60 includes the threaded portion 64, and the threaded portion 64 can be threaded into the mounting surface portion 30A of the outer wall material 30 while screwing the mounting surface portion 30A. It is said that Therefore, in this embodiment, the fastener 60 can be fixed to the outer wall material 30 without using adhesive or the like.

Therefore, in this embodiment, it is possible to reduce the time required to construct the outer wall 26 of the building 10.

<Supplementary explanation of the above embodiment>
(1) In the embodiments described above, the building exterior wall structure according to each embodiment is applied to the building 10, which is a unit building, but the buildings to which the building exterior wall structure described above can be applied are not limited to this. That is, as long as the exterior wall is a building constructed by attaching exterior wall materials to an exterior wall frame, the above-described exterior wall structure of the building can be applied to buildings constructed using methods other than the unit construction method.

(2) In addition, in the second embodiment described above, the penetration part 54 was provided directly on the outer wall frame 28, but depending on the specifications of the push rivet 38, a penetration part into which the push rivet 38 is fitted may be provided. A spacer or the like may be attached to the outer wall frame 28.

(3) Furthermore, in the second embodiment described above, depending on the specifications of the outer wall material 30, a recessed portion in which the head 62A of the fastener 60 fits may be provided in the mounting surface portion 30A of the outer wall material 30, or A bonded portion using an adhesive or the like may be used for fixing to the mounting surface portion 30A.

10 Building 14 Body frame (skeleton)
26 Exterior wall 26A Wall surface 28 Exterior wall frame 30 Exterior wall material 30A Mounting surface section 36 Design surface section 38 Push rivet (mounting section)
40A Fixed part 42 Fitting part 50 Recessed part 52 Joint part 54 Penetrating part 60 Fastener (attachment part)
62B Fitting part 64 Screwing part 66 Fixing part

Claims (4)

An exterior wall frame that is attached to the skeleton of a building and forms part of the framework of the exterior wall, and is provided with a penetration part that penetrates the exterior wall in the thickness direction when viewed from the outdoor side;
an exterior wall material including a design surface portion constituting a part of the wall surface of the exterior wall and disposed on the outdoor side of the exterior wall frame;
a mounting portion including a fixing portion fixed to a mounting surface portion on the opposite side of the design surface portion of the exterior wall material; and a fitting portion that is pushed into the penetrating portion and fitted into the penetrating portion;
The exterior wall structure of a building with The mounting surface portion is provided with a recess into which the fixing portion is accommodated;
The outer wall structure of a building according to claim 1. an elastic joint is interposed between the recess and the fixing part;
The outer wall structure of a building according to claim 2. The fixing part includes a threading part that can be screwed onto the mounting surface while screwing the mounting surface.
The outer wall structure of a building according to claim 1 or 2.