JP2005240429A - Outer wall construction structure and dry joint member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer wall construction structure easily constructed and providing excellent aesthetic appearance and waterproofness and a dry joint member used for the structure. <P>SOLUTION: This outer wall construction structure 1 is formed by joining a plurality of outer wall panels 2 to each other. The dry joint member 3 having a base member 31 and a plurality of top members 32 is disposed at a joint part 17 between the adjacent outer wall panels 2. The base member 31 comprises a base panel part 311 and a pair of wall line parts 312, and forms a fitting groove part 314. The top members comprise surface joint forming parts 321 and projected line parts 322. The plurality of top members 32 fits the projected line parts 322 to the fitting groove parts 314 of the base member 31, and the surface joint forming parts 321 to the end faces 23 of the outer wall panels 2. In the outer wall construction structure 1, the top members 32 having the surface joint forming parts 321 with different color tones are disposed adjacent to each other, and the adjacent top members 32 are shiplap-jointed to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an outer wall construction structure in which a plurality of outer wall plates are joined to form an outer wall surface, and a dry joint member used therefor.

Conventionally, in an outer wall construction structure in which a plurality of outer wall plates are joined to form an outer wall surface, a dry joint member is disposed at a joint portion between adjacent outer wall plates (see Patent Document 1). .
By injecting the dry joint member, infiltration of rainwater from the joint portion is prevented. Further, since the dry joint member is exposed on the outer wall surface, it is necessary to achieve harmony with the color tone of the adjacent outer wall plate in appearance. Therefore, for example, the dry joint member has a color similar to the color tone of the outer wall plate.

  However, when there are a plurality of regions having different color tones on the outer wall surface, when trying to match the color tone of the dry joint member with the color tone of each region, it is necessary to dispose dry joint members having different color tones. That is, for example, the necessity described above arises when a curtain plate having a color tone different from that of the outer wall plate is provided, or when the color tone of the outer wall surface is made different between the first floor portion and the second floor portion of the building.

  However, when a plurality of dry joint members are continuously arranged on one joint part, there is a possibility that a gap may be formed at the boundary part of the dry joint member when the dry joint member expands and contracts in the joint part forming direction. . There is a risk that rainwater may enter from this gap and it will be difficult to fully exhibit the waterproof function.

  In addition, it is conceivable to apply a paint to a part of the surface of the placed dry joint member to partially change the color tone, but in this case, cracks occur on the surface of the coating film due to changes over time. There is a possibility that the appearance designability may be deteriorated. Moreover, there is a possibility that the construction period will be longer.

JP 2001-173192 A

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an outer wall construction structure that is easy to construct and excellent in appearance design and waterproofness, and a dry joint member used therefor.

1st invention is the outer wall construction structure which joins a some outer wall board and comprises an outer wall surface,
A dry joint member having a base member fixed to the structural frame of the building and a plurality of top members fitted and fixed to the base member is disposed in the joint portion between the adjacent outer wall plates.
The base member has a strip-shaped substrate portion and a pair of wall strips formed along the longitudinal direction of the substrate portion, and a fitting groove is formed between the pair of wall strips. ,
Each of the top members has a surface joint forming part having elasticity for closing the joint part, and a convex strip provided along the length direction of the surface joint forming part,
The plurality of top members are arranged in a state in which the protruding strips are fitted into the fitting groove of the base member and the surface joint forming part is in close contact with the end surface of the outer wall plate,
In addition, the top member having the surface joint forming part having a different color tone is disposed adjacent to the joint part, and the adjacent top members are determined or joined to each other. The outer wall construction structure is characterized (claim 1).

Next, the effects of the present invention will be described.
In the outer wall construction structure, a plurality of types of dry joint members having different color tones are arranged on one continuous joint part. Therefore, for example, by arranging a plurality of types of top members having different color tones according to changes in the partial color tone of the outer wall surface, it is possible to configure the outer wall surface having a harmonious appearance design as a whole. it can.

Further, as described above, the outer wall construction structure has the surface joint forming portion of the top member in close contact with the end surface of the outer wall plate. Therefore, it is possible to prevent rainwater from entering from the joint between adjacent outer wall plates.
Since the adjacent top members are joined together or actually joined, it is possible to prevent a gap from being generated between the two top members. That is, unlike the case of simple butt joining, the contact area between the two top members can be increased in the case of joint joining or actual joining. Thereby, the coupling force between both can be obtained and generation | occurrence | production of a clearance gap can be suppressed. In addition, even if the two top members are slightly deviated in the direction away from each other, the intrusion of rainwater can be suppressed in the real part because the real part is formed.

  Moreover, the process of the joint part in the said outer wall construction structure can be performed by constructing the said dry-type joint member. That is, for example, after fixing the base member to the body edge attached to the structural housing, constructing the outer wall plate, and fitting the top member to the base member, the joint portion can be easily processed. it can. Therefore, the outer wall construction structure can be easily constructed.

  As described above, according to the present invention, it is possible to provide an outer wall construction structure that is easy to construct and excellent in appearance design and waterproofness.

A second invention is a dry joint member disposed in a joint portion between adjacent outer wall plates,
The dry joint member has a base member fixed to a structural frame of a building, and a plurality of top members fitted and fixed to the base member.
The base member has a strip-shaped substrate portion and a pair of wall strips formed along the longitudinal direction of the substrate portion, and a fitting groove is formed between the pair of wall strips. ,
Each of the top members has a surface joint forming part having elasticity for closing the joint part, and a convex strip provided along the length direction of the surface joint forming part,
The plurality of top members are configured so that the protruding strips can be fitted into the fitting groove of the base member and the surface joint forming part can be brought into close contact with the end surface of the outer wall plate,
In addition, the dry joint member has the top member having the surface joint forming portions of different colors, and the adjacent top members are connected to each other so that they can be joined together or actually joined together. A dry joint member is characterized in that a real part is provided in the part (claim 11).

Next, the effects of the present invention will be described.
The dry joint member has a top member having surface joint forming portions having different colors. Therefore, a plurality of types of top members having different color tones can be disposed on one continuous joint. Therefore, for example, by arranging a plurality of types of top members having different color tones according to changes in the partial color tone of the outer wall surface, it is possible to configure the outer wall surface having a harmonious appearance design as a whole. it can.

Moreover, since the surface joint formation part of the said top member can be closely_contact | adhered to the end surface of the said outer wall board, the permeation of rain water from the joint part between adjacent outer wall boards can be prevented.
And since the above-mentioned adjacent top member has a real part formed in each end part so that it can be decided and joined together or it can actually join, it prevents that a gap arises between two top members. be able to. That is, unlike the case of simple butt joining, the contact area between the two top members can be increased in the case of joint joining or actual joining. Thereby, the coupling force between both can be obtained and generation | occurrence | production of a clearance gap can be suppressed. In addition, even if the two top members are slightly deviated in the direction away from each other, the intrusion of rainwater can be suppressed in the real part because the real part is formed.

  Moreover, the joint part can be easily processed by using the dry joint member. That is, for example, after fixing the base member to the body edge attached to the structural housing, constructing the outer wall plate, and fitting the top member to the base member, the joint portion can be processed.

  As described above, according to the present invention, it is possible to provide a sealing partition member that can constitute an outer wall surface that is easy to construct and excellent in appearance design and waterproofness.

In the first invention (invention 1), the base member may be fixed to the structural housing via, for example, a trunk edge, or may be directly fixed.
The joint portion may be a vertical joint formed in the vertical direction, a horizontal joint formed in the left-right direction, or an oblique joint in some cases.
In the present specification, the outside of the outer wall surface is represented as “front” and the inside is represented as “rear”. Regarding the above-mentioned dry joint members, etc., “front”, “rear”, “left”, “right”, “upper” and “lower” are defined based on the state where they are arranged as part of the outer wall construction structure. Represent.

Further, the outer wall surface has a plurality of regions having different color tones, and the front end portion of the surface joint forming portion of the adjacent top member is a position that is continuous with a color tone boundary line that is a boundary of the region Are preferably abutted against each other (claim 2).
In this case, the color pattern on the outer wall surface can be formed without interruption even at the joint. Therefore, it is possible to obtain an outer wall construction structure that is further excellent in appearance design.

The plurality of regions having different color tones are formed by, for example, a curtain plate disposed between the first floor and the second floor of the building, or by disposing outer wall plates of different colors. The outer wall plate itself may be formed by a plurality of regions having different color tones.
And the said color tone boundary line which is a boundary of these area | regions is formed so that the said joint part may be crossed.

  The length of the real part is preferably 5 to 15 mm. When the length of the real part is less than 5 mm, it is difficult to sufficiently prevent the gap between the top members, and it may be difficult to ensure waterproofness. On the other hand, when the length of the real part exceeds 15 mm, it is difficult to form the real part and it may be difficult to ensure the strength.

In the second aspect of the present invention (invention 11), the base member may be formed by coating a surface of a core metal such as a galvanized steel sheet with a synthetic rubber such as PVC (polyvinyl chloride). .
The top member can be made of, for example, EPDM, CR (chloroprene), CSM (chlorosulfonated polyethylene), or the like.

Next, in the first invention (invention 1) or the second invention (invention 11), the top members adjacent to each other are joined together and the real part of one of the top members is It is a real part, and the real part of the other top member is preferably an upper solid part (claims 3 and 12).
In this case, the top member of the dry joint member can be easily disposed.
When the dry joint member is disposed on the vertical joint formed in the vertical direction, a lower solid portion is formed at the upper end portion of the top member disposed on the lower side, and the top member disposed on the upper side is formed. It is preferable to form a solid part at the lower end. Thereby, the arrangement | work operation | work of a top member becomes easier and it can prevent effectively turning up a top member.

In addition, the lower solid part is composed of the protruding line part at the end part of the top member and the rear part of the surface joint forming part, and the upper solid part is in front of the surface joint forming part at the end part of the top member. It is preferable to consist of a part (Claim 4 and Claim 13).
In this case, since the top members overlap in the surface joint forming portion having a relatively large area, the bonding force between the top members can be increased. Therefore, it can suppress more that the clearance gap between top members arises. In addition, even when the two top members are displaced in directions away from each other, the surface joint forming portion in the lower solid portion can effectively prevent rainwater from entering.

In addition, the lower solid portion may be formed of the protruding strip portion at the end portion of the top member, and the upper solid portion may be formed of the surface joint forming portion at the end portion of the top member. Item 5 and Claim 14).
In this case, the lower solid part and the upper solid part can be easily formed.

Further, the lower solid part is composed of the rear part of the protruding line part at the end part of the top member, and the upper solid part is the front part of the protruding line part and the surface joint forming part at the end part of the top member. (Claim 6 and Claim 15).
Also in this case, the lower solid part and the upper solid part can be easily formed.

Further, the lower solid part is formed with a front engagement part protruding forward, and the upper solid part is formed with a rear engagement part protruding backward, and the front engagement part and the rear part are formed. The engaging portions may be engaged with each other (claim 7).
In this case, it is possible to further suppress the generation of a gap between the top members by increasing the coupling force between the top members.

The adjacent top members are actually joined to each other, the real part of one of the top members is a male real part, and the real part of the other top member is a female real part. (Claim 8 and Claim 17).
In this case, the coupling force between the two top members can be increased.

Moreover, it is preferable that a caulking material is placed on at least one of the real parts joined to each other (claims 9 and 18).
In this case, since the two top members are bonded to each other in the real part, it is possible to further increase the coupling force between them. Therefore, it is possible to sufficiently prevent a gap from being formed between the two top members, and to sufficiently prevent rainwater from entering.
As the caulking material, for example, styrene elastomer, silicone resin, modified silicone resin, polysulfide resin, polyurethane resin, polypropylene, polyethylene, polyvinyl chloride, ethylene propylene rubber foam, or the like can be used.

Also, each of the substrate portions outside the pair of wall strips is provided with a backup material having elasticity, and the backup material is in close contact with the back side surface of the side end portion of the outer wall plate. (Claim 10).
In this case, a water conduit is formed between the base member, the top member, and the outer wall plate. And a part of this water conduit is formed by sticking the back side surface in the side edge part of an outer wall board to the above-mentioned backup material. That is, the water conduit is a space that is blocked from the structural housing and the back side surface of the outer wall plate excluding the side end portions.

Therefore, in the joint portion, even if rainwater enters from between the surface joint forming portion and the end face of the outer wall plate, the rainwater flows downward through the water conduit, and the back side of the outer wall plate There is no risk of reaching the surface or the structural housing.
Therefore, the outer wall construction structure is excellent in waterproofness, and there is no possibility of causing deterioration of the outer wall plate or the structural frame due to intrusion of rainwater.

Next, in the second aspect of the present invention (invention 11), the lower solid part is formed with a forward engagement part protruding forward, and the upper solid part has a rear engagement part protruding backward. Preferably, the front engaging portion and the rear engaging portion are configured to be engageable with each other (claim 16).
In this case, the coupling force between the top members can be increased to further suppress the occurrence of a gap between the top members.

Moreover, it is preferable that the said board | substrate part in the outer side of said pair of wall strip part is provided with the backup material which has elasticity, respectively (Claim 19).
In this case, a water conduit can be formed between the base member, the top member, and the outer wall plate by bringing the back surface of the outer wall plate into close contact with the backup material. Thereby, as above-mentioned, the outer wall construction structure excellent in waterproofness can be obtained, and the deterioration of the outer wall board and structure housing | casing by infiltration of rainwater can be prevented.

(Example 1)
An outer wall construction structure and a dry joint member according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the outer wall construction structure 1 of this example is formed by joining a plurality of outer wall plates 2 to form an outer wall surface 18.

As shown in FIGS. 8 and 9, in the joint portion 17 between the adjacent outer wall plates 2, a base member 31 fixed to the structural frame 10 of the building and a plurality of fitting and fixing to the base member 31 are provided. A dry joint member 3 having top members 32 and 320 is disposed.
As shown in FIGS. 1, 6, and 7, the base member 31 includes a strip-shaped substrate portion 311 and a pair of wall strip portions 312 formed along the longitudinal direction of the substrate portion 311. A fitting groove 314 is formed between the pair of wall strips 312.
Further, a small raised central ridge 318 is formed at the bottom of the fitting groove 314.

As shown in FIGS. 1 and 4, the top members 32 and 320 are respectively provided with a surface joint forming part 321 having elasticity for closing the joint part 17, and in the length direction of the surface joint forming part 321. And ridges 322 provided along.
As shown in FIGS. 8 and 15, the plurality of top members 32, 320 have the ridges 322 fitted into the fitting grooves 314 of the base member 31, and the surface joint forming part 321 is formed on the end surface 23 of the outer wall plate 2. They are arranged in close contact.

As shown in FIGS. 1 and 3, the outer wall construction structure 1 includes the top members 32 and 320 having the surface joint forming portions 321 having different color tones and arranged adjacent to each other in the vertical direction, and The top members 32 and 320 are determined and joined to each other.
The joint portion 17 is a vertical joint formed in the vertical direction.

  As shown in FIGS. 2 and 13, the outer wall surface 18 has a plurality of regions having different color tones. As shown in FIGS. 2, 3, and 13, the front end portion 323 of the surface joint forming portion 321 of the adjacent top members 32 and 320 is a position that is continuous with the color boundary 19 that is the boundary of the region. Are butted against each other.

  That is, the outer wall 18 is provided with a curtain plate 5 disposed between the first and second floors of the building, and the curtain plate 5 is different from the outer wall 18 of other portions. The colors are different. For example, the curtain 5 can be brown and the other outer wall 18 can be white. As a result, a plurality of regions having different color tones are formed, and the end portions 323 of the surface joint forming portions 321 of the adjacent top members 32 and 320 are abutted to each other at a position continuous with the color tone boundary line 19.

Since the color tone boundary line 19 crosses the joint portion 17 at two locations, three top members 32 and 320 are provided, and the butted portions (end portions 323) of the surface joint forming portions 321 are provided at two locations. It is. The two butted portions (end portions 323) are arranged so as to be continuous with the color tone boundary line 19.
A top member 320 of the same color (for example, brown) as that of the curtain plate 5 is placed in a portion adjacent to the curtain plate 5 in the joint portion 17, and a similar color (for example, white) of the outer wall plate 2 is provided in other portions. System) top member 32 is driven.

As shown in FIGS. 1 and 3, the real part of one top member 32 (320) of the adjacent top members 32 and 320 is a lower solid part 33, and the real part of the other top member 320 (32). Is the upper solid part 34.
As shown in FIGS. 1 and 3 to 5, the lower solid portion 33 includes a ridge portion 322 at the end portion of the top member 32 (320) and a rear portion of the surface joint forming portion 321. Further, the upper solid part 34 includes a front part of the surface joint forming part 321 at the end part of the top member 32 (320).
The length of the lower solid portion 33 and the upper solid portion 34 is about 10 mm.

As shown in FIGS. 1 and 4, a caulking material 35 is placed on the front surface of the lower solid portion 33.
As shown in FIGS. 1, 6, and 7, the base plate portion 311 outside the pair of wall strip portions 312 is provided with a backup material 313 having elasticity. As shown in FIGS. 8 and 15, the backup material 313 is in close contact with the back side surface 22 at the side end portion 21 of the outer wall plate 2.

As shown in FIG. 15, a water conduit 13 is formed between the base member 31, the top members 32 and 320, and the outer wall plate 2.
As shown in FIG. 9, the dry joint member 3 is disposed in the joint 17 in the vertical direction, and the water conduit 13 is formed in the vertical direction along this.

Further, as shown in FIG. 15, the top members 32 and 320 of the dry joint member 3 fitted to the joint portion 17 of the outer wall plate 2 are such that both side portions 325 of the surface joint forming portion 321 are substantially perpendicular to the central portion 324. And is in close contact with the end face 23 of the outer wall plate 2.
As shown in FIGS. 1, 4, and 14, two pairs of protrusions 326 are formed on the left and right sides of the protrusions 322 of the top members 32 and 320. As shown in FIG. 15, in a state in which the protruding ridge portion 322 is fitted in the fitting groove portion 314 of the base member 31, the protruding ridge 326 engages with the wall strip portion 312 of the base member 31 and is removed. It is preventing.
That is, the protrusion 322 is fitted in the fitting groove 314 in a state where the protrusion 326 is biased in the expanding direction.

Further, as shown in FIGS. 6, 14, and 15, the substrate portion 311 of the base member 31 is formed by coating the surface of a core material 316 made of a galvanized steel plate with synthetic rubber such as PVC (polyvinyl chloride). . The top members 32 and 320 are made of synthetic rubber such as chlorosulfonated polyethylene. The backup material 313 is a closed cell type resin foam (foamed EPDM), and is adhered to the substrate portion 311 via an adhesive 317.
On the other hand, the top members 32 and 320 can be made of EPDM and CR (chloroprene). In addition, reinforcing glass fibers are embedded in the top members 32 and 320 along the length direction thereof.

  Moreover, in the outer wall construction structure 1 of this example, as shown in FIG. 8 and FIG. 9, the outer wall plate 2 is fixed to the trunk edge 14 attached to the structural housing 10 via the fastener 11. Yes. That is, the fastener 11 is fixed to the body edge 14 with the nail 111, and the outer wall plate 2 has its upper end 24 and lower end 25 engaged and fixed to the fastener 11. The trunk edge 14 is fixed to the structural housing 10 in the vertical direction via a waterproof paper 16.

As shown in FIGS. 1 and 4, the color of the front surface of the surface joint forming portion 321 in the top members 32 and 320 is slightly different from the color of the surface of the outer wall plate 2 or the curtain plate 5 at the central portion 324 in the width direction. The color is dark. In this example, the surface color of the outer wall plate 2 or the curtain plate 5 is slightly different from the surface color of the other joints (not shown). The other side portions 325, which are the other parts, have substantially the same color as the surface of the outer wall plate 2 or the curtain plate 5. Thereby, the said dry-type joint member 3 fuse | fuses with the said outer wall board 2 without a sense of incongruity, and the three-dimensional effect is exposed.
In some cases, the color of the front surface of the surface joint forming part 321 may be a single color, that is, the central part 324 and the side parts 325 may be the same color.

Next, the construction method of the outer wall construction structure of this example will be described.
First, the base member 31 of the dry joint member 3 is fixed by hitting a nail on the trunk edge 14 fixed to the structural housing 10, and the fastening bracket 11 is fixed to the trunk edge 14 by the nail 111.
Next, as shown in FIG. 14, the left and right outer wall plates 2, 2 are brought into close contact with the back-up material 313 with the back side surfaces 22 at the respective side end portions 21, and the structural housing 10 is interposed via the fastening bracket 11. Secure to. Further, the curtain plate 5 is similarly arranged.
Note that the outer wall plate 2 and the curtain plate 5 are not limited to the fasteners 11 and may be fastened to the structural housing 10 with nails, screws, or the like.

Next, as shown in FIGS. 15 and 9, the top members 32 and 320 are fitted into the joint portion 17 between the adjacent outer wall plates 2. At this time, as shown in FIG. 15, the protrusions 322 of the top members 32 and 320 are fitted into the fitting grooves 314 of the base member 31, and both side portions 325 of the surface joint forming part 321 are connected to the outer wall. The plate 2 is brought into close contact with the end surface 23.
In addition, the rear end portion 327 of the ridge portion 322 of the top members 32 and 320 is brought into contact with the central ridge 318 of the base member 31.

  In arranging the top members 32 and 320 on the joint portion 17 shown in FIG. 10, first, as shown in FIG. 11, the lower color boundary 19 of the two color boundaries 19 The top member 32 is disposed while aligning the end 323 of the surface joint forming portion 321. The top member 32 includes a surface joint forming portion 321 having the same color (white color) as the outer wall plate 2.

Next, as shown in FIG. 12, a top member 320 having a surface joint forming portion 321 of the same color (brown) as the curtain plate 5 is disposed at the joint portion 17 between the left and right curtain plates 5. The top member 320 overlaps the lower solid portion 33 of the already disposed top member 32 with the upper solid portion 34 and abuts the end portion 323 of the surface joint forming portion 321. Further, the upper end portion 323 of the surface joint forming portion 321 in the top member 320 is disposed at a position continuous with the upper color tone boundary line 19.
Next, as shown in FIG. 13, the top member 32 having the same color as the outer wall plate 2 is disposed on the upper side of the top member 320 while being determined and joined.

Next, the function and effect of this example will be described.
In the outer wall construction structure 1, as shown in FIGS. 2 and 13, a plurality of types of dry joint members 3 having different colors are arranged on one continuous joint portion 17. Therefore, for example, by arranging a plurality of types of top members 32 and 320 having different color tones according to changes in the partial color tone of the outer wall surface 18, the outer wall surface 18 having a harmonious appearance design as a whole. Can be configured.

Further, as described above, the outer wall construction structure 1 has the surface joint forming portions 321 of the top members 32 and 320 closely attached to the end surface 23 of the outer wall plate 2. Therefore, it is possible to prevent rainwater from entering from the joint portion 17 between the adjacent outer wall plates 2.
Since the adjacent top members 32 and 320 are determined and joined to each other, it is possible to prevent a gap from being generated between the two top members 32 and 320. That is, unlike the case of simple butt joining, the contact area between the two top members 32 and 320 can be increased in the case of joint joining. Thereby, the coupling force between both can be obtained and generation | occurrence | production of a clearance gap can be suppressed. Further, even if the two top members 32 and 320 are slightly displaced in the direction away from each other, the lower solid portion 33 is formed, so that intrusion of rainwater can be suppressed in the lower solid portion 33.

  Further, the joint portion 17 in the outer wall construction structure 1 can be processed by constructing the dry joint member 3. That is, after fixing the base member 31 to the body edge 14 attached to the structural housing 10 and constructing the outer wall plate 2, the top members 32 and 320 are fitted into the base member 31, thereby Processing can be performed easily. Therefore, the outer wall construction structure 1 can be easily constructed.

  2, 3, and 13, the outer wall surface 18 includes a plurality of regions having different color tones, and the end portions 323 of the surface joint forming portions 321 of the adjacent top members 32 and 320 are , They are abutted with each other at a position that is continuous with the color tone boundary line 19 that is the boundary of the region. Thereby, the color pattern of the outer wall surface 18 can be formed without interruption even in the joint portion 17. Therefore, it is possible to obtain the outer wall construction structure 1 that is further excellent in appearance design.

  Further, as shown in FIGS. 3, 11, and 12, the lower solid portion 33 is formed at the upper end portion of the top member 32 (320) disposed on the lower side, and the top member 320 (32) disposed on the upper side is formed. An upper solid part 34 is formed at the lower end. Thereby, the arrangement | positioning operation | work of the top members 32 and 320 becomes easier, and the top members 32 and 320 can be effectively prevented from turning up.

  As shown in FIGS. 1, 4, and 5, the lower solid portion 33 includes a ridge portion 322 and a rear portion of the surface joint forming portion 321 at the end of the top member 32, and the upper solid portion 34 includes The front joint portion 321 is formed at the front portion of the top member 32. Thereby, in the surface joint formation part 321 with a comparatively wide area, since the top members 32 and 320 overlap, the coupling force of the top members 32 and 320 can be enlarged. Therefore, it is possible to further suppress the occurrence of a gap between the top members 32 and 320. In addition, even when the two top members 32 and 320 are displaced in a direction away from each other, the surface joint forming portion 321 in the lower solid portion 33 can effectively prevent rainwater from entering.

  As shown in FIGS. 4 and 5, a caulking material 35 is placed on the front surface of the lower solid portion 33 of the top members 32 and 320. As a result, the two top members 32 and 320 are bonded to each other in the real part, so that the coupling force between them can be further increased. Therefore, it is possible to sufficiently prevent a gap from being formed between the two top members 32 and 320, and to sufficiently prevent rainwater from entering.

  Further, as shown in FIGS. 6, 7, 14, and 15, the base member 31 is provided with backup materials 313 on the left and right, respectively, and the backup material 313 is the back side of the side end portion 21 of the outer wall plate 2. The surface 22 is in close contact. Thereby, as shown in FIG. 15, the water conduit 13 is formed between the base member 31, the top member 32, and the outer wall plate 2. The water conduit 13 is a space that is blocked from the structural housing 10 and the back side surface 22 of the outer wall plate 2 excluding the side end portions 21.

Therefore, in the joint portion 17, even if rainwater enters between the surface joint forming portion 321 and the end surface 23 of the outer wall plate 2, the rainwater flows downward through the water conduit 13, and the outer wall plate There is no possibility of reaching the rear side surface 22 or the structural housing 10.
Therefore, the outer wall construction structure 1 is excellent in waterproofness, and there is no possibility of causing deterioration of the outer wall plate 2 and the structural frame 10 due to the intrusion of rainwater.

  As described above, according to this example, it is possible to provide an outer wall construction structure that is easy to construct and excellent in appearance design and waterproofness.

(Example 2)
In this example, as shown in FIGS. 16 to 18, the lower solid portion 33 is composed of the rear portion of the ridge portion 322 at the ends of the top members 32 and 320, and the upper solid portion 34 is the end of the top members 32 and 320. It is an example of the dry joint member 3 which has the top members 32 and 320 which consist of the front part of the protruding item | line part 322 in a part, and the surface joint formation part 321. FIG.
Others are the same as in the first embodiment.
In this case, the lower solid portion 33 and the upper solid portion 34 can be easily formed.
In addition, the same effects as those of the first embodiment are obtained.

(Example 3)
In this example, as shown in FIG. 19 and FIG. 20, the lower solid portion 33 is composed of a protruding strip portion 322 at the end portions of the top members 32 and 320, and the upper solid portion 34 is at the end portions of the top members 32 and 320. This is an example of the dry joint member 3 having the top members 32 and 320 formed of the surface joint forming part 321.
Others are the same as in the first embodiment.
In this case, the lower solid portion 33 and the upper solid portion 34 can be easily formed.
In addition, the same effects as those of the first embodiment are obtained.

Example 4
In this example, as shown in FIGS. 21 and 22, the lower solid portion 33 is formed with a forward engaging portion 331 that protrudes forward, and the upper solid portion 34 is formed with a rear engaging portion 341 that protrudes backward. Further, this is an example of the dry joint member 3 having the top members 32 and 320.
When the lower solid portion 33 and the upper solid portion 34 are joined and joined, the front engaging portion 331 and the rear engaging portion 341 are engaged with each other.
Others are the same as in the first embodiment.

In this case, the coupling force between the top members 32 can be increased. Therefore, it is possible to further suppress the occurrence of a gap between the top members 32.
In addition, the same effects as those of the first embodiment are obtained.

Further, as shown in FIG. 23, the rear engaging portion 341 of the upper solid portion 34 is further formed with a protruding portion 342 protruding rearward, and the lower solid portion 33 is fitted with the protruding portion 342. A recess 332 can also be formed.
In this case, the adjacent top members 32 and 320 are joined together while fitting the projection 342 into the fitting recess 332.
Thereby, the top member 32 can be prevented from being lifted due to a change with time, and the waterproof property can be improved.

(Example 5)
This example is an example of an outer wall construction structure in which adjacent top members are actually joined to each other (not shown).
A male part is formed at the end of one top member, a female part is formed at the end of the other top member, and both are actually joined.
Others are the same as in the first embodiment.
In this case, the coupling force between the two top members can be increased.
In addition, the same effects as those of the first embodiment are obtained.

(Example 6)
This example is an example of the outer wall construction structure 1 in which a color tone boundary line 19 is formed on the outer wall surface 18 by a plurality of regions having different color tones formed on each outer wall plate 2 itself, as shown in FIG.
Also in this case, the top members 32 and 320 are disposed so that the butted portion (end portion 323) of the surface joint forming portion 321 is disposed at a portion where the color tone boundary line 19 crosses the joint portion 17.
Others are the same as in the first embodiment.
Also in the case of this example, it is possible to provide an outer wall construction structure that is easy to construct and excellent in appearance design and waterproofness. In addition, the same effects as those of the first embodiment are obtained.

(Example 7)
This example is an example of the outer wall construction structure 1 in which the color boundary line 19 is formed by disposing the outer wall plates 2a and 2b having different colors as shown in FIG. That is, the outer wall plate 2a and the outer wall plate 2b having different color tones are arranged adjacent to each other, and the color tone boundary line 19 is formed between them.
For example, the outer wall plate 2a can be white and the outer wall plate 2b can be brown.

Then, the top members 32 and 320 are disposed so that the butted portion (end portion 323) of the surface joint forming portion 321 is disposed at a portion where the color tone boundary line 19 crosses the joint portion 17.
Also in the case of this example, it is possible to provide an outer wall construction structure that is easy to construct and excellent in appearance design and waterproofness. In addition, the same effects as those of the first embodiment are obtained.

In each of the above-described embodiments, the dry joint member having three or two top members is shown, but the number of top members may be four or more.
Moreover, although the example of the vertical joint was shown as a joint part, this invention can also be applied to the horizontal joint formed in a horizontal direction.
Further, as the color of the surface joint forming portion of the top member, a desired color can be employed. Besides the above, for example, beige, brown, gray, amber, black, olive, etc. can be appropriately employed. it can.

The perspective view of the dry joint material in Example 1. FIG. The front view of the outer wall construction structure in Example 1. FIG. It is a longitudinal cross-sectional view of the outer wall construction structure in Example 1, and is AA arrow directional cross-sectional view of FIG. FIG. 3 is a perspective view of a top member in the first embodiment. The side view of the top member in Example 1. FIG. 3 is a perspective view of a base member in Embodiment 1. FIG. The front view of the base member in Example 1. FIG. The perspective view of the outer wall construction structure in Example 1. FIG. The front view of the outer wall construction structure in Example 1. FIG. The outer wall construction structure front view before the top member arrangement | positioning in Example 1. FIG. The front view of the outer wall construction structure after arrange | positioning the 1st top member in Example 1. FIG. The front view of the outer wall construction structure after arrange | positioning the 2nd top member in Example 1. FIG. The front view of the outer wall construction structure after arrange | positioning the 3rd top member in Example 1. FIG. Sectional drawing of the joint part in Example 1 before top member arrangement | positioning. Sectional drawing of the joint part in Example 1 after top member arrangement | positioning. The perspective view of the top member in Example 2. FIG. The perspective view of the dry-type joint member in Example 2. FIG. The side view of the top member in Example 2. FIG. The perspective view of the top member in Example 3. FIG. The side view of the top member in Example 3. FIG. The perspective view of the top member in Example 4. FIG. The side view of the top member in Example 4. FIG. The side view of the top member which provided the projection part and the fitting recessed part in Example 4. FIG. The front view of the outer wall construction structure in Example 6. FIG. The front view of the outer wall construction structure in Example 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer wall construction structure 17 Joint part 18 Outer wall surface 2 Outer wall board 23 End surface 3 Dry joint member 31 Base member 311 Substrate part 312 Wall strip part 314 Fitting groove part 32, 320 Top member 321 Surface joint formation part 322 Convex part 33 Primary Part 34 Upper part

Claims (19)

In the outer wall construction structure formed by joining multiple outer wall plates to configure the outer wall surface,
A dry joint member having a base member fixed to the structural frame of the building and a plurality of top members fitted and fixed to the base member is disposed in the joint portion between the adjacent outer wall plates.
The base member has a strip-shaped substrate portion and a pair of wall strips formed along the longitudinal direction of the substrate portion, and a fitting groove is formed between the pair of wall strips. ,
Each of the top members has a surface joint forming part having elasticity for closing the joint part, and a convex strip provided along the length direction of the surface joint forming part,
The plurality of top members are arranged in a state in which the protruding strips are fitted into the fitting groove of the base member and the surface joint forming part is in close contact with the end surface of the outer wall plate,
In addition, the top member having the surface joint forming part having a different color tone is disposed adjacent to the joint part, and the adjacent top members are determined or joined to each other. Characteristic outer wall construction structure.   2. The outer wall surface according to claim 1, wherein the outer wall surface includes a plurality of regions having different color tones, and an end of a front surface of the surface joint forming portion of the adjacent top member is a color boundary line that is a boundary of the region. An outer wall construction structure characterized by being abutted against each other at successive positions.   In Claim 1 or 2, the said adjacent top member is mutually determined and joined, The said real part of one said top member is a lower solid part, The said real part of the said other top member is a real solid External wall construction structure characterized by being a part.   4. The lower solid part according to claim 3, wherein the lower solid part includes the protruding line part at the end part of the top member and the rear part of the surface joint forming part, and the upper solid part forms the surface joint at the end part of the top member. Exterior wall construction structure characterized by comprising the front part of the part.   In Claim 3, The said lower solid part consists of the said protruding item | line part in the edge part of the said top member, The said upper solid part consists of the said surface joint formation part in the edge part of the said top member, It is characterized by the above-mentioned. Exterior wall construction structure.   4. The lower solid portion according to claim 3, wherein the lower solid portion includes a rear portion of the protruding strip portion at an end portion of the top member, and the upper solid portion includes a front portion of the protruding strip portion at an end portion of the top member and the surface. An outer wall construction structure comprising a joint forming part.   The front engaging portion that protrudes forward is formed on the lower solid portion, and the rear engaging portion that protrudes rearward is formed on the upper solid portion. And the front engagement portion and the rear engagement portion are engaged with each other.   In Claim 3, the adjacent top members are actually joined to each other, the real part of one of the top members is a male real part, and the real part of the other top member is a female real part. An outer wall construction structure characterized by being.   The outer wall construction structure according to any one of claims 3 to 8, wherein a caulking material is placed on at least one of the real parts joined to each other.   The back-up material which has elasticity respectively in the said board | substrate part in the outer side of said pair of wall strip part in any one of Claims 3-9 is provided, This back-up material is a side edge of the said outer wall board. An outer wall construction structure characterized by being in close contact with the back side surface of the section. A dry joint member disposed in a joint portion between outer wall plates disposed adjacent to each other,
The dry joint member has a base member fixed to a structural frame of a building, and a plurality of top members fitted and fixed to the base member.
The base member has a strip-shaped substrate portion and a pair of wall strips formed along the longitudinal direction of the substrate portion, and a fitting groove is formed between the pair of wall strips. ,
Each of the top members has a surface joint forming part having elasticity for closing the joint part, and a convex strip provided along the length direction of the surface joint forming part,
The plurality of top members are configured so that the protruding strips can be fitted into the fitting groove of the base member and the surface joint forming part can be brought into close contact with the end surface of the outer wall plate,
In addition, the dry joint member has the top member having the surface joint forming portions of different colors, and the adjacent top members are connected to each other so that they can be joined together or actually joined together. A dry joint member, wherein a real part is provided in the part.   In Claim 11, the adjacent top members are joined and joined to each other, the real part of one of the top members is a lower solid part, and the real part of the other top member is an upper real part. There is a dry joint material.   13. The lower solid part according to claim 12, wherein the lower solid part includes the protruding line part at the end part of the top member and the rear part of the surface joint forming part, and the upper solid part forms the surface joint at the end part of the top member. A dry joint member comprising a front portion of a portion.   In Claim 12, the said lower solid part consists of the said protruding item | line part in the edge part of the said top member, The said upper solid part consists of the said surface joint formation part in the edge part of the said top member, It is characterized by the above-mentioned. Dry joint material.   13. The lower solid part according to claim 12, comprising a rear part of the protruding line part at an end part of the top member, and the upper solid part includes a front part of the protruding line part and an upper surface of the end part of the top member. A dry joint member comprising a joint forming part.   16. The front engaging portion that protrudes forward is formed on the lower solid portion, and the rear engaging portion that protrudes rearward is formed on the upper solid portion. And the front engagement portion and the rear engagement portion are configured to be engageable with each other.   In Claim 12, the adjacent top members are actually joined to each other, the real part of one of the top members is a male real part, and the real part of the other top member is a female real part. There is a dry joint material.   The dry joint member according to any one of claims 12 to 17, wherein a caulking material is cast on at least one of the real parts joined to each other.   The dry joint member according to any one of claims 11 to 18, wherein a backup material having elasticity is provided on each of the substrate portions outside the pair of wall portions.

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