JP3116064B2 - Architectural exterior materials and architectural exterior panels using architectural exterior materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building exterior material and a building exterior panel using the building exterior material.
In particular, the present invention relates to a building exterior material having excellent heat insulation properties and a building exterior panel formed by connecting the building exterior material to the left and right.

[0002]

2. Description of the Related Art Conventionally, as this type of building exterior panel, a board made of concrete, a board made of foamed concrete, or a board in which a decorative material such as a metal plate is adhered to the surface of a core material made of a heat insulating material is used. Is known in which left and right are connected to each other. This building exterior panel is constructed by producing a board at a factory and connecting the boards at a building site.

[0003]

However, in order to maintain the heat resistance of the concrete board used in the above-mentioned conventional building exterior panel, concrete having a predetermined thickness or more must be used. No. For this reason, there is a problem that the weight of the board becomes heavy, the work efficiency of transport and assembly at the construction site is reduced, and the production cost is increased.

Further, the use of a board made of foamable concrete is lighter than that of an ordinary concrete board, but has a problem in that the strength is low. For this reason, boards made of foamable concrete are
There are difficulties in using it as a wall.

[0005] A board in which a decorative board made of a metal plate or the like is attached to the surface of a core made of a heat insulating material has the advantage of being lighter and less expensive than a board made of concrete, but has a thermal conductivity. And the outside air temperature is transmitted directly from the outer panel to the inner panel. For this reason, when used as an exterior panel for a house, there is a problem that the heating effect or the cooling effect is weakened. In addition, there is also a problem that dew condensation occurs on the surface of the inner panel particularly when the outside air temperature is low.

Accordingly, the present invention has been proposed in view of the above-mentioned problems of the prior art, and it is easy to carry and assemble, can reduce production costs, and has an excellent heat insulating effect. It is an object to provide a building material and a building exterior panel using the building exterior material.

[0007]

The present invention has the following features in order to achieve the above object.

[0008] The invention according to claim 1 comprises an outer steel plate covering the outer wall surface of the heat insulating core and an inner steel plate covering the inner wall surface of the heat insulating core. The left and right side edges of the outer steel plate are bent inward, and the tip of one of the bent inner or outer steel plates is U-shaped,
The other steel plate is bent in an inverted U-shape to form a folded portion, and the inner and outer steel plates are joined via an S-shaped heat insulating material so as to include the tips of the folded portions. It is characterized by.

The invention according to claim 2 is the above-described claim 1.
In addition to the constitution of the invention of the above, a connecting groove is formed on the left and right side surfaces of the heat insulating core material.

[0010] The invention according to claim 3 is the above-mentioned claim 2.
In addition to the configuration of the invention described, the connection grooves formed on the left and right side surfaces of the heat insulating core material are formed by bending the outer steel plate on one side, and bending the inner steel plate on the other side. Characterized by being formed by:

According to a fourth aspect of the present invention, there is provided an architectural exterior panel in which a building exterior material in which the outer peripheral wall surface of a heat insulating core material is covered with a steel plate is arranged side by side, and the architectural exterior materials are connected by connecting members. In addition, the building exterior material is an outer steel plate that covers the outer wall surface of the heat insulating core material, and the left and right side surfaces of the heat insulating core material are superimposed with the outer steel plate via the heat insulating material, and the inner wall surface of the heat insulating core material is It consists of an inner steel plate to be covered, and a connecting groove formed on the left and right side surfaces of the heat insulating material, and the connecting member is provided at a pillar positioned between adjacent building exterior materials and at both inner and outer ends of the pillar. A holding member for sandwiching the inner and outer wall surfaces of the building exterior material from the outside, and a connection member having an engaging projection projecting rearward from the middle of the column and engaging in the connection groove of the building exterior material; , And a building exterior panel is formed from

[0012] The invention of claim 5 provides the above-mentioned claim 5.
In addition to the configuration of the invention described above, a mounting member protruding outward is provided on at least one of the inner and outer ends of the column of the connecting member.

[0013] The invention of claim 6 provides the above-mentioned claim 5.
Alternatively, in addition to the configuration of the invention described in claim 6, the support member of the connecting member is provided with a gap portion in the middle of the inside and outside directions, which is connected in the up and down direction, and in which the inside and outside positions are reversed in the middle of the up and down direction. And each of the lower half is separated into an inner strut and an outer strut.In the upper half, an engaging projection is formed on either the inner strut or the outer strut, and in the lower half, the upper half is An engaging projection is formed on the opposite outer column or inner column.

Therefore, the present invention has the following effects. That is, according to the first aspect of the present invention, the steel sheet covering the outer peripheral surface of the heat insulating core material is divided into an outer steel sheet and an inner steel sheet, and a heat insulating material is interposed between the two steel sheets through the heat insulating material. Or the transmission of heat from the inner steel plate to the outer steel plate. Therefore, it is possible to provide an architectural exterior material that is excellent in heat insulation, inexpensive, and easy to transport. Then, both ends of the outer steel plate and the inner steel plate are fitted to each other. Therefore, it is possible to provide a building exterior material that is strong and resistant to impact.

According to the second aspect of the present invention, a plurality of building exterior materials can be connected left and right by inserting connection members such as connection fittings into connection grooves formed on the left and right side surfaces of the heat insulating core material. Therefore, a long architectural exterior panel can be easily formed using this architectural exterior material.

According to the third aspect of the present invention, the outer steel plate and the inner steel plate each having the connection groove are formed in the same shape, and are arranged point-symmetrically. Therefore, since both steel sheets can be used in common, the manufacturing cost of building exterior materials can be reduced.

According to the fourth aspect of the present invention, a plurality of building exterior materials are arranged left and right by arranging the building exterior materials side by side and inserting connecting members into connection grooves formed on the left and right side surfaces of the heat insulating core material. They can be connected to form an integral building exterior panel. Therefore, even when forming a long architectural exterior panel, it is possible to use an architectural exterior material excellent in heat insulation and transportability, so that it has excellent heat insulation as a whole and easy assembling work. And the manufacturing cost can be reduced.

According to the fifth aspect of the present invention, the attachment member provided on the connection member attaches a window frame, wiring, a brace, or the like.
It can be used for various purposes such as hanging a picture frame. Therefore, the versatility of the building exterior panel can be improved.

According to the sixth aspect of the present invention, the column constituting the connecting member is provided with a gap portion which bisects the column in the inside and outside directions. Therefore, this gap portion acts as a heat insulating layer, and can prevent the conduction of heat from the outside to the inside or from the inside to the outside of the building exterior panel, and provide a building exterior panel excellent in heat insulation. can do.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a first embodiment of a building exterior material according to the present invention. This building exterior material 10
As shown in FIG. 1, the outer wall surface of the heat insulating core 20 is covered with an outer steel plate 30 and the inner wall surface of the heat insulating core 20 is covered with an inner steel plate 40. The outer steel plate 30 and the inner steel plate 40 are superimposed on the left and right side surfaces of the heat insulating core material 20 via the heat insulating material 50. In addition, on the left and right side surfaces of the heat insulating core member 20, adjacent building exterior materials 10, 1 are provided.
A connecting groove 60 for connecting the 0s is formed.

The outer steel plate 30 and the inner steel plate 40 described above.
Have the same shape, and are arranged point-symmetrically on the outer peripheral surface of the heat insulating core material 20. This outer steel plate 30
An outer wall surface of the heat insulating core material 20 is covered, and one end of the heat insulating core material 20 is substantially centered on one side of the heat insulating core material 20.
The bent portion 31 is bent by about 90 ° toward the center of 0, and the tip side is further bent by about 90 ° toward the inner wall surface to form a bent portion 31 having an inverted L-shaped cross section. The first folded portion 32 is formed by folding outward toward the outer wall surface so as to have a U-shape. A second folded portion 33 is formed by folding the other end of the heat insulating core material 20 substantially in the center of the other side surface of the heat insulating core material 20 toward the outer wall surface so that the leading end has a U-shaped cross section. .

The inner steel plate 40 is also formed in the same manner as the above-mentioned outer steel plate 30. The inner steel plate 40 is arranged point-symmetrically with the outer steel plate 30 so that the first folded portion 32 and the second folded portion 33 are respectively formed. They are fitted via a heat insulating material 50. On one side of the heat insulating core 20, a bent portion 31 of the outer steel plate 30 and a second folded portion 33 of the inner steel plate 40 form a connection groove 60 having a U-shaped cross section outward, and the other side. On the side, the second folded portion 33 of the outer steel plate 30
And the bent portion 31 of the inner steel plate 40 form a connection groove 60 having a U-shaped cross section.

The steel plates 30, 40 are preferably made of, for example, a galvanized steel plate, and the surface thereof is preferably coated with a dew condensation preventing agent 15. In this way, by applying the dew condensation preventing agent 15 to the surface, it is possible to further prevent the dew condensation on the surfaces of the steel plates 30 and 40 due to the temperature difference between the inner and outer wall surfaces of the building exterior material 10. Also, the heat insulating material 50
Is made of rubber packing, for example, and
It is possible to prevent heat from being conducted from 0 to the inner steel plate 40 or from the inner steel plate 40 to the outer steel plate 30.

The heat insulating core member 20 is made of, for example, rock wool or lock cell board. After assembling the outer steel plate 30 and the inner steel plate 40 by fitting them together, the steel plates 30, 40 are assembled.
It is constituted by filling inside. In this manner, when the heat insulating core material 20 is filled inside the steel plates 30 and 40, the outer steel plate 30 and the inner steel plate 40 are so positioned that the positions of the outer steel plate 30 and the inner steel plate 40 do not shift. The spacer 70 is attached between them. The spacer 70 is made of a rubber or synthetic resin piece, and as shown in FIG.
And the inner surface of the inner steel plate 40, and between the first folded portion 32 of the inner steel plate 40 and the inner surface of the outer steel plate 30.

The size of the building exterior material 10 is, for example, about 60 to 100 mm in thickness and about 100 to 3 in length.
00 mm (or about 100-450 mm) and about 180-900 cm in height. In the above-described embodiment, an example of a configuration in which the outer steel plate 30 and the inner steel plate 40 are fitted is described. However, the present invention is not limited to this. The polymerization may be carried out by an appropriate means such as adhesion and clip joining.

Next, the building exterior materials 10, 1 arranged on the left and right
The connecting member 80 that connects the 0s will be described. As shown in FIG. 1, the connecting member 80 includes a column 81 located between adjacent building exterior materials 10, 10, and a column 8.
1, extending from the inner and outer ends to the left and right,
Holding pieces 82, 82 for sandwiching the inner and outer wall surfaces of both building exterior materials 10, 10 from the outside, and right and left outwardly extending from the middle of the length of the support column 81, respectively, and extending backward. Engaging projections 83, 8 engaged in the connecting grooves 60 of the
3 is provided. Therefore, the connecting member 80 has a substantially “king” cross section as a whole. This connecting member 8
0 is made of, for example, metal, rigid synthetic resin, or the like. With this connecting member 80, the building exterior material 10,
To connect 10, first, a building exterior material 10 serving as a reference
The connecting member 80 is positioned at one end of the connecting groove 60, one of the engaging projections 83 is inserted into the connecting groove 60, and the inner and outer wall surfaces are held by the holding members 82, 82. Then, the other engaging projection 83 of the connecting member 80 is inserted into the connection groove 60 of the building exterior material 10 to be connected, and the inner and outer wall surfaces of the building exterior material 10 to be connected are connected to the other holding piece. 82,
82.

Next, based on FIG. 2 and FIG.
A building exterior material 10 using the second embodiment will be described.
In addition, in this building exterior material 10, members other than the connection member 90 are the same as the building exterior material 10 according to the above-described first embodiment, and the same members are denoted by the same reference numerals. Is omitted.

FIG. 2 is a cross-sectional view of the building exterior material 10 connected by the connecting member 90 according to the second embodiment, and FIG.
FIG. 3 is a perspective view of a connection member 90 according to the embodiment. As shown in FIGS. 2 and 3, the support members of the connection member 90 according to the second embodiment are connected in the vertical direction in the middle of the inside and outside directions.
A gap portion 91 whose inner and outer positions are reversed in the middle of the vertical direction is provided, and is separated into an inner support 92 and an outer support 93 in each of the upper half and the lower half. In the upper half, an engagement projection 94 is formed on the outer support 93, and in the lower half, an engagement projection 94 is formed on the inner support 92. In addition, both exterior and exterior materials for building 1 are provided at both inner and outer ends of the columns 92 and 93, respectively.
Nipping pieces 95, 95 that sandwich the inner and outer wall surfaces of 0, 10 from the outside
However, they extend to the left and right, respectively. The inner strut 92 and the outer strut 93 are continuous inward and outward on the switching surface between the upper half and the lower half.

FIG. 2 shows the connecting member 90 in a state in which an engaging projection 94 is formed on the outer support 93.
Is formed in a laterally horizontal H-shape,
The inner strut 92 without the engagement protrusion 94 has an inverted T-shaped cross section. Note that a support 92 that forms the engagement protrusion 94 is provided.
(93) is not limited to the above-described configuration, and the upper half and the lower half may be configured in reverse to the above-described embodiment.

Next, a building exterior material 10 using a third embodiment of the connecting member 100 will be described with reference to FIG. FIG.
FIG. 9 is a cross-sectional view of the building exterior material 10 connected by the connection member 100 according to the third embodiment.

The connecting member 100 according to the third embodiment is
As shown in FIG. 4, mounting members 110 protruding outward are provided at the inner and outer ends of the columns 92 and 93 of the connecting member 100 according to the second embodiment described above. Are the same as those of the building exterior material 10 according to the second embodiment described above. Therefore, the first
The same members as those of the embodiment and the second embodiment are denoted by the same reference numerals, and the description is omitted.

The connecting member 100 according to the third embodiment is
As shown in FIG. 4, the inner mounting member 1 extends outward from both the inner and outer ends of the posts 92 and 93 of the connecting member 100.
11 and the outer mounting member 112 are extended. The inner mounting member 111 is formed of a columnar bolt extending from the inner end of the inner support 92 of the connecting member 100, and the inner insulating wall pressing member 120 formed of a nut with a seat is screwed to the tip of the inner mounting member 111. It is. The inner heat insulating wall pressing member 120 is mounted on the inner mounting member 111 such that the seat 121 is located on the indoor side.

And, on the inner wall surface of the building exterior material 10,
A non-combustible heat insulating material 130 is attached between the inner holding piece 95 of the connecting member 100 and the inner heat insulating wall pressing member 120.
Further, an interior noncombustible wall 140 is attached to the indoor side of the non-combustible heat insulating material 130 such that the seat 121 of the inner heat insulating wall pressing member 120 presses the indoor side.

An interior mounting member 150 is screwed on the indoor side of the inner heat insulating wall pressing member 120. The interior mounting member 150 has a bolt portion 152 protruding from one side surface of the flange 151 and a rod-shaped mounting portion 153 protruding from the other side surface of the flange 151. The interior mounting member 150 can be attached by screwing the bolt portion 152 into a screw hole on the distal end side of the inner heat insulating wall pressing member 120. At this time, since the flange 151 contacts the end surface of the inner heat insulating wall pressing member 120, the screwing amount of the bolt 152 is regulated.

With this interior mounting member 150, an interior material such as a frame can be mounted on the indoor side wall surface. Also,
The outer mounting member 112 is connected to the outer support 93 of the connecting member 100.
An outer heat insulating wall pressing member 160 made of a columnar bolt extending from the outer end of the outer mounting member 112 and made of a nut with a seat is screwed to the tip of the outer mounting member 112. The outer heat-insulating-wall pressing member 160 is attached to the outer mounting member 112 such that the seat 161 side is located outside the room.

Then, on the outer wall surface of the building exterior material 10,
A non-combustible heat insulating material 170 is attached between the outer holding piece 95 of the connecting member 100 and the seat 161 of the outer heat insulating wall pressing member 160. Furthermore, on the outdoor side of the non-combustible heat insulating material 130,
The decorative exterior material 180 is attached. Further, an exterior mounting member 190 can be screwed to the outside of the outside heat insulating wall pressing member 160. The exterior mounting member 190 has, for example, an engagement ring 192 provided at the tip of a bolt 191, and is attached by screwing the bolt 191 into a screw hole on the tip side of the outer heat insulating wall holding member 160.

Further, the outer steel plate 30 of the building exterior material 10
And the non-combustible heat insulating material 130 with the sound absorbing material 200 interposed therebetween, thereby enhancing the sound insulating effect. The thickness of the sound absorbing material 200 is, for example, about 25 mm.

The positions where the inner mounting member 111 and the outer mounting member 112 are provided may be any positions in the height direction of the connecting member 100, for example, near the upper end, near the lower end, or near the center. Is provided. The connection member 100 may be provided with both the inner mounting member 111 and the outer mounting member 112, only the inner mounting member 111, or only the outer mounting member 112.

Further, in the above-described embodiment, the inner mounting member 111 and the outer mounting member 112 are extended from both the inner and outer ends of the columns 92 and 93 of the connecting member 100, but the inner mounting member 111 and the outer mounting member 112 are connected. Instead of being provided integrally with the columns 92, 93 of the member 100, the inner mounting member 111 and the outer mounting member 112 may be formed by bolts that are screwed to the inner and outer ends of the columns 92, 93 of the connecting member 100. An example of how to use the above-described exterior mounting member 190 will be described with reference to FIG.

FIG. 5 is a perspective view of a building exterior panel 210 in which a plurality of building exterior materials 10 are connected. As shown in FIG. 5, when exterior mounting members 190, 190 are attached diagonally to appropriate upper and lower ends of a building exterior panel 210 in which a plurality of exterior building materials 10 are connected, this exterior mounting member A brace 220 can span between 190 and 190. In this manner, the building exterior panel 210 can be reinforced by bridging the braces 220.

Further, by appropriately changing the shape of the exterior mounting member 190, such as a hook shape or a rod shape, a window frame, wiring, or the like can be mounted. It goes without saying that the brace 220 may be mounted and reinforced on the inner mounting member 111 described above.

The architectural exterior material 10 and the architectural exterior panel 210 using the architectural exterior material 10 can be used, for example, as wall materials for buildings such as houses, offices, warehouses, and condominiums. When used in these buildings, the production cost is low, the work is easy because of its light weight, it is resistant to shaking such as earthquakes, and it is resistant to fire because it uses noncombustible materials. Furthermore, since it has an excellent heat insulating effect, it can enhance the heating effect or the cooling effect, especially when used in a house, a condominium, etc., and does not cause dew condensation on the indoor side.

[0043]

As described above, the present invention has the above-described configuration, and can provide the following effects.

According to the first aspect of the present invention, the heat insulating material interposed between the overlapped portions of the two steel plates allows the outer steel plate to be converted into the inner steel plate.
Alternatively, it is possible to prevent heat from being transmitted from the inner steel plate to the outer steel plate. Therefore, it is possible to provide an architectural exterior material that is excellent in heat insulation, inexpensive, and easy to transport. Then, both ends of the outer steel plate and the inner steel plate are fitted to each other. Accordingly, there is no possibility that the outer steel plate and the inner steel plate may be separated from each other, and it is possible to provide an impact-resistant and durable building exterior material.

According to the second aspect of the present invention, a plurality of building exterior materials can be connected to the left and right by inserting connection members such as connection fittings into connection grooves formed on the left and right side surfaces of the heat insulating core material. Therefore, a long architectural exterior panel can be easily formed using this architectural exterior material.

According to the third aspect of the present invention, the outer steel plate and the inner steel plate each having the connecting groove are formed in the same shape, and are arranged point-symmetrically. Therefore, the outer steel plate and the inner steel plate can be formed by the same mold, and both steel plates can be used in common, so that the manufacturing cost of the building exterior material can be reduced.

According to the fourth aspect of the present invention, a plurality of building exterior materials are arranged left and right by arranging building exterior materials left and right and inserting connecting members into connection grooves formed on the left and right side surfaces of the heat insulating core material. They can be connected to form an integral building exterior panel. Therefore, even when a long architectural exterior panel is formed, transport of the architectural exterior material, which is a constituent unit, is easy, assembling work is also easy, and manufacturing costs can be reduced.

Also, due to the heat insulating effect of each building exterior material constituting the building exterior panel, the building exterior panel as a whole is also excellent in heat insulation, and the use of this building exterior panel does not cause condensation or the like. Houses, offices, warehouses, buildings, etc. can be built.

According to the fifth aspect of the present invention, a window frame, wiring, a brace, and the like can be attached to the attachment member provided outside the room, and a frame or the like can be suspended from the attachment member provided inside the room. Can be. Therefore, the versatility of the building exterior panel can be improved.

According to the sixth aspect of the present invention, the support member constituting the connecting member is provided with a gap that bisects the support member in the inward and outward directions. Therefore, this gap portion acts as a heat insulating layer, and can prevent the conduction of heat from the outside to the inside or from the inside to the outside of the building exterior panel, and provide a building exterior panel excellent in heat insulation. Can be
Occurrence of condensation can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a building exterior material according to the present invention.

FIG. 2 is a cross-sectional view of a building exterior material connected by a connection member according to a second embodiment.

FIG. 3 is a perspective view of a connection member according to a second embodiment.

FIG. 4 is a cross-sectional view of a building exterior material connected by a connection member according to a third embodiment.

FIG. 5 is a perspective view of a building exterior panel in which a plurality of building exterior materials are connected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Building exterior material 15 Condensation preventive agent 20 Insulation core material 30 Outer steel plate 31 Bent part 32 1st folded part 33 2nd folded part 40 Inner steel plate 50 Insulation material 60 Connection groove 70 Spacer 80 Connecting member 81 Post 82 Clamping piece 83 Abutment portion 90 Connection member (second embodiment) 91 Gap portion 92 Inner strut 93 Outer strut 94 Engagement protrusion 95 Nipping piece 100 Connection member (Third embodiment) 110 Mounting member 111 Inner mounting member 112 Outer mounting member 120 Inner insulating wall holding member 121 Seat 130 Non-combustible heat insulating material 140 Interior non-combustible wall 150 Interior mounting member 151 Flange 152 Bolt portion 153 Mounting portion 160 Outer insulating wall pressing member 170 Non-combustible heat insulating material 180 Cosmetic exterior material 190 Exterior mounting member 191 Bolt 192 Joint ring 200 Sound absorbing material 210 Architectural exterior panel 22 0 braces

Claims (6)

(57) [Claims] 1. An architectural exterior material in which an outer peripheral wall surface of a heat insulating core is covered with a steel plate, wherein the steel plate covers an outer steel plate covering an outer wall surface of the heat insulating core and an inner wall surface of the heat insulating core. The left and right side edges of each inner and outer steel plate are bent inward on the left and right side surfaces of the heat insulating core, and the tip of one of the bent inner or outer steel plates is formed into a U-shape. The other steel plate was bent in an inverted U-shape to form a folded portion, and the inner and outer steel plates were joined via an S-shaped heat insulating material so as to include the tips of the folded portions. A building exterior material characterized by that: 2. The architectural exterior material according to claim 1, wherein connection grooves are formed on left and right side surfaces of the heat insulating core material. 3. The connecting groove formed on the left and right side surfaces of the heat insulating core material is formed by bending an outer steel plate on one side and by bending an inner steel plate on the other side. The building exterior material according to claim 2, wherein: 4. An architectural exterior panel comprising: an architectural exterior material in which an outer peripheral wall surface of a heat insulating core material is covered with a steel plate, side by side, and the architectural exterior materials are connected to each other by a connecting member. The exterior material is an outer steel plate covering the outer wall surface of the heat insulating core, and an inner steel plate covering the inner wall surface of the heat insulating core while being superposed on the left and right side surfaces of the heat insulating core with the outer steel plate via the heat insulating material. A connecting groove formed on the left and right side surfaces of the heat insulating material, wherein the connecting member is provided between a pair of adjacent building exterior materials, and is provided at both inner and outer ends of the supporting pillar. A holding member for sandwiching the wall surface from the outside, and a connection member projecting rearward from the middle of the support column and having an engagement projection engaged with the connection groove of the building exterior material. And building exterior panels. 5. The building exterior panel according to claim 4, wherein mounting members protruding outward are provided on at least one of the inner and outer ends of the column of the connecting member. 6. A column of the connecting member is provided with a gap in the middle of the inside and outside, which is vertically continuous, and in which the inside and outside positions are reversed in the middle of the up and down direction. In the upper half, an engaging projection is formed on either the inner pillar or the outer pillar, and in the lower half, the outer pillar or the inner pillar is opposite to the upper half. The architectural exterior panel according to claim 4 or 5, wherein an engagement projection is formed on the exterior panel.