JP6688587B2 - Exterior wall joint structure - Google Patents

Description

  The present invention relates to a joint structure that is formed in a joint between two exterior panels that are a part of an outer wall.

  As the structure to be formed in the joints between exterior panels such as outer wall panels, the joint structure is made by a wet method in which a wet sealing material is placed in the joints, and the joint structure is made by a dry method in which a dry joint material is attached to the joints. And are generally known. While the wet method can secure high waterproofness, it has a drawback that the construction period is long depending on the weather. Moreover, while the dry method can ensure the ease of construction, it has the drawback that it is difficult to ensure complete waterproofing.

  For example, in Patent Document 1, a joint material including an engaging portion formed to have a width larger than the joint width, a protruding portion protruding from the engaging portion, and a water blocking material attached to the protruding portion, A joint structure of a dry construction method, which is constituted by a water blocking material attached to a wall panel, is disclosed. In the joint structure, the joint of the joint material is pressed against the joint, and the water stop material of the joint material and the water stop material of the wall panel are brought into close contact with each other to improve water stoppage in the dry method. There is.

JP-A-2000-104358

  However, in the joint structure of Patent Document 1, the engaging portion of the joint material may lose elasticity due to aging and may not be able to follow the displacement of the joint width. In this case, a gap may occur between the exterior panels. In addition, the engaging portion that has lost the elastic force may be pushed out of the joint portion by the repulsive force of the water blocking material and may fall off. Therefore, the joint structure of Patent Document 1 cannot sufficiently improve the water blocking performance.

  The present invention has been made in view of the above circumstances, and relates to a joint structure of an outer wall capable of ensuring ease of construction and waterproofness.

  The joint part structure according to the present invention is a joint part structure formed between a pair of exterior panels, and includes a first dry joint material provided on a side surface of each of the pair of exterior panels and a pair of exterior panels. A second dry joint material provided so as to be sandwiched between the first dry joint material and at least one of the first dry joint material and the second dry joint material is an elastic body. , One of the first dry joint material and the second dry joint material is a convex member having a convex portion, and the other is a concave member having a concave portion corresponding to the convex portion and engaging with each other. .

  In this joint structure, one of the first dry joint material and the second dry joint material is a convex member, and the other is a concave member that engages with the convex member. Since the first dry joint material and the second dry joint material are locked to each other, it is possible to prevent the first dry joint material and the second dry joint material from being pushed out (falling off) from the joint portion. it can. Further, since at least one of the first dry joint material and the second dry joint material is an elastic body, even if the joint width is displaced, for example, the dry joint material in the joint structure is The displacement can be appropriately followed. Further, since at least one of them is made of an elastic material, the first dry joint material and the second dry joint material which are engaged with each other can be brought into pressure contact with each other. With these, it is possible to suppress the formation of a gap between the exterior panels. By suppressing the dropout of the dry joint material and suppressing the formation of the gap between the exterior panels, it is possible to ensure the water stoppage in the joint structure. Further, since this joint structure is a joint structure of the dry construction method, it can be easily constructed as compared with the joint structure of the wet construction method. From the above, the ease of construction and the waterproofness can be ensured.

  Further, both the first dry joint material and the second dry joint material may be elastic bodies. As a result, it is possible to further improve the followability to the displacement of the joint width and the adhesion between the dry joint materials, and it is possible to further secure the water stopping property in the joint portion structure.

  Further, the first dry joint material and the second dry joint material may be adhered to each other. As a result, the adhesion between the dry joint materials can be increased, and the waterproof property in the joint structure can be further ensured.

  Further, the first dry joint material and the second dry joint material may be bonded by a wet sealing material. Thereby, the first dry joint material and the second dry joint material can be individually carried to the site and adhered at the site. This makes it possible to improve workability.

  Further, the first dry joint material, the second dry joint material, and the wet sealing material may be the same material. By using the same material, when a force is applied to the joint structure, the force applied to the first dry joint material, the second dry joint material, and the wet sealing material can be made uniform. As a result, it is possible to prevent the adhesion between the dry joint materials from being lowered due to the biased application of force to some members.

  Further, the first dry joint material may be a convex member, and the second dry joint material may be a concave member. Thus, the joint structure can be easily formed by pushing the second dry joint material having the concave shape so as to follow the convex shape of the first dry joint material provided on each side surface of the exterior panel. Can be installed.

  In addition, the width dimension of the second dry joint material may be larger than the distance between the first dry joint materials provided on the respective side surfaces of the pair of exterior panels. As a result, the adhesion between the first dry joint material and the second dry joint material can be enhanced.

Further, the convex portion and the concave portion are formed by curved surfaces, and the radius of curvature of the convex portion of the first dry joint material may be equal to or larger than the radius of curvature of the concave portion of the second dry joint material. Accordingly, it is possible to suppress the occurrence of a gap between the first dry joint material and the second dry joint material.

  Further, the surface of the second dry joint material may cover the surface of the joint structure. By covering the surface with the one dry joint material, the water stopping property can be further enhanced. In addition, the aesthetic appearance from the surface side of the joint structure can be improved.

  The surface of the second dry joint material may have a pattern of a similar color to the surface of the exterior panel, or may have a similar multicolored pattern. As a result, it is possible to create a sense of unity between the joint structure and the exterior panel, and to further improve the aesthetic appearance.

  The pair of exterior panels further include bottom portions extending in the opposite exterior panel direction from the side surfaces, and the maximum length of the first dry joint material in the opposite exterior panel direction is the exterior panel with the bottom portions facing each other. It may be shorter than the length in the direction. As a result, in the exterior panel, the tip of the bottom surface portion is projected more than the first dry joint material. For this reason, the first dry joint material may hit or be damaged by other objects when the exterior panels are piled up or when the exterior panel is hoisted by a nylon sling (belt-shaped hoisting jig) at a construction site. It is possible to avoid such problems, and it is possible to further improve the workability, adhesion, and watertightness.

  According to the present invention, it is possible to ensure ease of construction and waterproofness.

It is a perspective view which shows the outer wall which concerns on embodiment of this invention. It is sectional drawing which expands and shows the joint part structure which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the state before installation of the concave joint material in the joint structure of FIG. It is a figure showing various patterns of a painting and a repair sheet. It is sectional drawing which expands and shows the joint part structure which concerns on 2nd Embodiment of this invention. It is sectional drawing which expands and shows the joint part structure which concerns on 3rd Embodiment of this invention. It is sectional drawing which expands and shows the convex joint material and concave joint material which concern on a modification. It is sectional drawing which expands and shows the joint part structure which concerns on a modification. It is sectional drawing which expands and shows the joint part structure which concerns on a modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same elements or elements having the same function will be denoted by the same reference symbols, without redundant description.

  A part or the whole of the outer wall 100 (see FIG. 1) of the building may be provided by arranging a plurality of window frames such as the outer wall panel 1A and an opening sash frame side by side, or by placing the outer wall panel 1A vertically and horizontally relative to the window frame. It is formed by providing adjacently. The planar member forming the outer wall 100 such as the outer wall panel 1A and the window frame corresponds to an exterior panel material (exterior panel). Here, as the outer wall panel 1A, a precast reinforced concrete (PC) plate, a lightweight cellular concrete (ALC) plate, a metal curtain wall, or the like can be used, but in the following embodiments, an outer wall panel assuming an ALC panel is used. 1A will be described as an example.

[First Embodiment]
First, the joint structure 2 according to the first embodiment will be described. As shown in FIG. 1, by jointly arranging a plurality of outer wall panels 1A and arranging them in a planar manner, a joint portion 10 is formed between adjacent outer wall panels 1A. That is, the joint portion 10 is formed between the pair of outer wall panels 1A. Specifically, the corner portion on the front surface side of the forefront surface 1a (see FIG. 2) of the outer wall panel 1A is provided with a notch along the longitudinal direction, and the forefront surfaces 1a are arranged to face each other. Thus, the joint portion 10 having the groove on the front surface side is formed. The joint structure 2 is a structure formed in the joint 10. In the following description, the “front surface side” is assumed to be the side of the outer wall 100 that faces the outside, and particularly the side where the joint portion 10 is formed is intended.

  As shown in FIGS. 2 and 3, the joint portion 10 has a pair of side surface portions 11 and a pair of bottom surface portions 12. That is, each of the pair of outer wall panels 1A forming the joint portion 10 has the side surface portion 11 and the bottom surface portion 12. The pair of side surface portions 11 has a symmetrical shape with the bottom surface portion 12 sandwiched therebetween, and a vertical surface 11b (side surface) rising substantially perpendicular to the bottom surface portion 12 and a joint portion extending from the vertical surface 11b to the surface of the outer wall 100. 10 has an inclined surface 11a which is inclined so that the width thereof increases. The pair of bottom surface portions 12 extends from the end portions of the vertical surface 11b on the side opposite to the side continuous with the inclined surface 11a toward the facing outer wall panel 1A direction (hereinafter, sometimes referred to as "width direction"). ing.

  A convex dry joint material 3 (first dry joint material) is provided on the vertical surface 11b of each of the pair of outer wall panels 1A. Specifically, in a factory, a primer or an adhesive is applied to the vertical surface 11b of the side surface portion 11 that becomes the joint portion 10, and the convex dry joint material 3 is adhered to the primer or the adhesive to thereby form a vertical surface. A convex dry joint material 3 is provided on 11b. More specifically, the convex dry joint material 3 is provided in a portion of the vertical surface 11b that is continuous with the inclined surface 11a so that the surface of the convex dry type joint material 3 is continuous with the inclined surface 11a. Note that, by bonding the convex dry joint material 3 to the side surface portion 11 in the factory, it is possible to improve the bonding reliability as compared with the case where the convex dry joint material 3 is bonded to the side surface portion 11 on site.

  The convex dry type joint material 3 is a long elastic member formed according to the dimension of the joint portion 10 in the longitudinal direction. Further, the convex dry joint material 3 is a semi-cylindrical (substantially semicircular cross-section) convex member having a convex portion 3c formed of a curved surface protruding in the width direction when being bonded to the vertical surface 11b. The maximum width W1 of the convex dry joint material 3 in the width direction is shorter than the length W2 of the bottom surface portion 12 in the width direction (see FIG. 3). The convex dry joint material 3 is made of, for example, a polyurethane-based sealing material or a modified silicone-based sealing material, and is formed by hardening the wet sealing material. The convex dry joint material 3, which is an elastic member, is not limited to the one obtained by hardening the wet sealing material, and may be rubber such as EPDM rubber and urethane rubber and its foam.

  A concave dry joint material 4 is provided so as to be sandwiched between the convex dry joint materials 3 of the pair of outer wall panels 1A. The concave dry joint material 4 is a long elastic member formed according to the dimension of the joint portion 10 in the longitudinal direction. In addition, the concave dry joint material 4 is a concave member having a concave portion 4c (see FIG. 3) formed of curved surfaces corresponding to the convex portion 3c and engaging with each other. The concave dry joint material 4 is made of, for example, a polyurethane-based sealing material or a modified silicone-based sealing material, and is formed by hardening the wet sealing material. The concave dry joint material 4 is preferably made of the same material as the convex dry joint material. The concave dry joint material 4, which is an elastic member, is not limited to the one obtained by hardening the wet sealing material, and may be rubber such as EPDM rubber and urethane rubber and its foam.

  The concave dry joint material 4 has a side surface portion 4a of a concave portion 4c that faces the convex portions 3c of the pair of convex dry joint materials 3, and the side surface portion 4a of the concave portion 4c is the convex dry joint material 3a. The protrusion 3c has a concave shape corresponding to that of the convex portion 3c, and has a substantially "drum" shape in cross section. That is, the concave dry joint material 4 is a concave member in which the side surface portion 4a of the concave portion 4c is recessed in the width direction in the state provided between the convex dry joint materials 3. The side surface portion 4a of the concave portion 4c has a concave shape corresponding to the convex shape of the convex portion 3c of the convex dry joint material 3 means that the concave dry joint material 4 is provided between the convex dry joint materials 3. In the state, the side surface portion 4a is formed so that the side surface portion 4a and the convex dry joint material 3 are in close contact with each other. Note that the contact between the side surface portion 4a and the convex dry joint material 3 is not limited to the state in which the side surface portion 4a and the convex dry joint material 3 are in direct contact, but also the side surface portion 4a and the convex dry joint material 3. The material 3 includes a state in which the material 3 is bonded via a wet sealing material 5 (details will be described later).

  Here, the convex dry type joint material 3 is a kamaboko type (cross-section substantially semicircular shape), and is located in the central portion of the outer wall panel 1A in the thickness direction (hereinafter, also referred to as “thickness direction”). The width dimension is the largest and the width dimension at both ends in the thickness direction is the smallest. Therefore, the corresponding concave dry joint material 4 has a shape in which the central portion in the thickness direction is constricted, the width dimension of the central portion in the thickness direction is the smallest, and the width dimension of both ends in the thickness direction is the largest. More specifically, the concave dry joint material 4 has the largest width dimension at the surface-side end portion of the both ends in the thickness direction. The surface of the concave dry joint material 4 is wedge-shaped, and the wall thickness is extremely thin. Since the surface side end of the concave dry joint material 4 is thinly formed, the boundary surface between the convex dry joint material 3 and the concave dry joint material 4 becomes difficult to see when viewed from the front surface side of the outer wall panel 1A. be able to.

  Further, the concave type in the direction in which the convex dry type joint materials 3 face each other (that is, the width direction) is larger than the distance D1 between the convex dry type joint materials 3 provided on the vertical surfaces 11b of the pair of outer wall panels 1A. The width dimension D2 of the dry joint material 4 is large (see FIG. 3). The relationship between the spacing dimension D1 between the convex dry joint materials 3 and the width dimension D2 of the concave dry joint material 4 is such that the convex dry joint material 3 and the side surface portion 4a are in contact with each other (close contact), and all in the thickness direction. Holds in the area of. As a result, when the concave dry joint material 4 is provided between the convex dry joint materials 3, both side portions 4a of the concave dry joint material 4 are pressed by the pair of convex dry joint materials 3. The structure of the convex dry joint material 3 and the concave dry joint material 4 are improved.

  Then, as described above, the convex dry joint material 3 and the concave dry joint material 4 have lengths corresponding to each other in the thickness direction, and the convex dry joint material 3 has a central portion in the thickness direction. While the width dimension of the concave dry joint material 4 is the largest, the width dimension of both ends in the thickness direction is the largest. Therefore, the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other. The concave dry joint material 4 having a constricted central portion in the thickness direction has a convex dry joint material 4 provided between the convex dry joint materials 3 in the width direction. Since it is pressed by 3, the movement of the concave dry joint material 4 in the thickness direction is suppressed.

  Regarding the portion where the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other (the portion where they are in contact with each other), the concave dry joint material 4 is not provided between the convex dry joint material 3, that is, In the state where the concave dry joint material 4 is not pressed by the pair of convex dry joint materials 3, the maximum length in the width direction of the convex dry joint material 3 is longer than the maximum length in the width direction of the concave dry joint material 4. The maximum length in the thickness direction of the convex dry joint material 3 is longer than the maximum length in the thickness direction of the concave dry joint material 4.

  That is, the maximum width X1 in the width direction of the convex dry joint material 3 in contact with the side surface portion 4a is longer than the maximum length X2 in the width direction of the side surface portion 4a in contact with the convex dry joint material 3, and is in contact with the side surface portion 4a. The maximum length Y1 in the thickness direction of the convex dry type joint material 3 is longer than the maximum length Y2 in the thickness direction of the side surface portion 4a in contact with the convex dry type joint material 3 (see FIG. 3). As a result, the convex dry type joint material 3 is larger than the concave dry type joint material 4 in the portions where they are locked to each other. As a result, the concave dry type joint material 4 in which both side surface portions 4a are pressed by the convex dry type joint material 3 is provided between the convex dry type joint materials 3 while being deformed in the portions that are engaged with each other. Therefore, the adhesion between the convex dry joint material 3 and the concave dry joint material 4 can be further enhanced.

In the state in which the concave dry joint material 4 is provided between the convex dry joint materials 3, the surface 4 b of the concave dry joint material 4 covers the surface of the joint portion 10 in the joint structure 2. The fact that the surface 4b of the concave dry joint material 4 covers the surface of the joint portion 10 means that the bottom surface portion 12 is not visually recognized when viewed from the front surface side of the outer wall panel 1A. It means that the dry joint material 4 is provided. The radius of curvature R1 of the convex portion 3c of the convex dry joint material 3 is set to be equal to or larger than the radius of curvature R2 of the concave portion 4c of the concave dry joint material 4 (see FIG. 3).

  Further, the convex dry joint material 3 and the concave dry joint material 4 (more specifically, the side surface portion 4a) are bonded by a wet sealing material 5. The wet sealing material 5 is, for example, a polyurethane sealing material or a modified silicone sealing material, and is preferably the same material as the convex dry joint material 3 and the concave dry joint material 4. If the surface of the outer wall panel 1A has a multicolored pattern finish, the wet sealing material 5 is preferably a multicolored sealing material (multicolored sealing material) similar to the outer wall panel 1A or a transparent sealing material. If the surface of the outer wall panel 1A has a monochromatic finish, the wet sealing material 5 is preferably a monochromatic sealing material (similar color) or a transparent sealing material similar to the outer wall panel 1A. As a result, even if the wet sealing material 5 is exposed (extruded) to the inclined surface 11a side, the wet sealing material 5 can be made inconspicuous. Below, the surface of the outer wall panel 1A will be described as having a multicolored pattern finish.

  The method of bonding the convex dry joint material 3 and the concave dry joint material 4 is not limited to the method of using the wet sealing material 5 described above. For example, a tape-shaped hot melt adhesive is applied to the convex dry joint material 3 in advance, and the hot melt adhesive is heated at the construction site to bond the convex dry joint material 3 and the concave dry joint material 4 together. You may. Further, the convex dry joint material 3 and the concave dry joint material 4 may be bonded to each other by another adhesive.

  A coating 15 is applied to a part of the inclined surface 11a and the surface of the convex dry joint material 3 continuous with the inclined surface 11a. The coating 15 is applied to at least a portion of the surface of the convex dry-type joint material 3 that is not hidden by the concave dry-type joint material 4 when the concave dry-type joint material 4 is bonded. The coating 15 is applied at the factory. The coating 15 is made into a multicolored pattern by a multicolored paint.

  FIG. 4 shows an example of various patterns of the coating 15. The multicolored pattern is a pattern in which two or more colors are used, and in particular, a pattern form in which each color is irregularly arranged is preferable. In FIG. 4, a portion shown in black or a shade of black in gray indicates colored mixed particles of the multicolored paint, and a portion in white indicates an uncolored region. Thus, in the coating 15, the colored mixed particles are randomly sprayed. The multicolored paint is obtained by dispersing several kinds of colored paints having different colors in a dispersion medium as a liquid or gel-like mixed liquid (colored mixed particles) of various sizes in a state of being insoluble in each other. Such multicolored paints include oil-in-water and water-in-oil multicolored paints in which one of the colored mixed particles and the dispersion medium is an oily system and the other is an aqueous system, and both are the same system in water. There are water-based and oil-in-oil multicolored paints. The coating 15 is formed, for example, in a factory by spray-painting a multicolored paint using a spray gun.

  A repair sheet 18 is attached to the surface 4b of the concave dry joint material 4. The repair sheet 18 is colored with the same multicolored paint as the above-mentioned coating 15. As a result, it is possible to create a sense of unity between the inclined surface 11a coated with the coating 15 and the concave dry joint material 4 to which the repair sheet is attached, and the aesthetic appearance can be further improved. The repair sheet 18 is, for example, a flexible sheet having plasticity. The repair sheet 18 is provided so as to cover the surface 4b of the concave dry type joint material 4 and at least a portion where the inclined surface 11a and the convex dry type joint material 3 are continuous.

  The makeup joint position L1 where the makeup joint is applied on the inclined surface 11a may be on the surface side of the sealing joint position L2 where the inclined surface 11a and the convex dry joint material 3 are continuous ( See FIG. 2). That is, there is a gap between the depth of the makeup joint and the depth of the sealing joint. This can prevent the repair sheet 18 from overlapping the makeup joint, and the repair sheet 18 can be easily attached. The repair sheet 18 may be attached at the construction site, or a part thereof may be attached in advance to the surface 4b.

  Next, a method of constructing the joint structure 2 will be described with reference to FIGS. 2 and 3. In addition, as a premise for performing the construction, as shown in FIG. 3, a plurality (a pair in FIGS. 2 and 3) of outer wall panels 1A are erected side by side in a planar manner. Then, on the vertical surfaces 11b of the pair of outer wall panels 1A, there is provided a convex dry joint material which is bonded in a factory.

  In this state, the wet sealing material 5 is first applied to the portions of the convex dry type joint materials 3 facing each other on the surface side of the outer wall panel 1A. Specifically, the wet sealing material 5 is cast from the front surface side of the outer wall panel 1A to the front surface side in the space between the pair of convex dry joint materials 3 by a dedicated extruder or the like. The wet sealing material 5 is used for bonding the convex dry joint material 3 and the concave dry joint material 4 together. Subsequently, the concave dry joint material 4 is pushed in from the front surface side of the outer wall panel 1A so that the side surface portion 4a of the concave portion 4c of the concave dry joint material 4 is aligned with the convex portion 3c of the convex dry joint material 3, and the convex dry joint material 4 is pushed in. The concave dry joint material 4 is fitted between the mold dry joint materials 3. Since the wet sealing material 5 is also extended to the inner side of the convex dry type joint material 3 as the concave dry type joint material 4 is pushed, the convex dry type joint material 4 is protruded over substantially the entire side surface 4a. The wet sealing material 5 can be interposed on the contact surface with the mold dry joint material 3. Finally, the repair sheet 18 is attached to the surface 4b of the concave dry joint material 4. In addition, the said construction method is an example, and the construction method of the joint part structure 2 is not limited to this.

  Next, the function and effect of the joint structure 2 according to the first embodiment will be described.

  Conventionally, as a joint structure between exterior panels such as outer wall panels, there are a joint structure by a wet construction method in which a wet sealing material is placed in the joint portion and a joint structure by a dry construction method in which a dry joint material is attached to the joint portion. Are known.

  While the wet method can secure the waterproofness, it has a drawback that the construction period is long. That is, since the wet construction method can be carried out depending on the weather, the construction period may be extended depending on the weather. In addition, the wet method is a process of placing a wet sealing material on the joint with a cylindrical sealing gun, a step of extending the wet sealing material with a spatula to finish the surface, and a step of performing finish coating on the wet sealing material. Therefore, the construction period becomes long.

  Moreover, while the dry method can ensure the ease of construction, it has the drawback that it is difficult to ensure complete waterproofing. That is, when the dry sealing material cannot follow the displacement of the joint width and a gap is created between the outer wall panels, the dry sealing material may fall out of the joint portion, and in this case, it is possible to secure the waterproofness. Can not.

  In the joint structure 2 according to the first embodiment, the convex dry joint material 3 which is a convex member and the concave dry joint material 4 which is a concave member are engaged with each other. More specifically, in the state in which the concave dry joint material 4 is provided between the convex dry joint materials 3, the convex dry joint material 3 has the largest width dimension in the central portion in the thickness direction, whereas the concave dry joint material 3 has the largest width dimension. The joint material 4 has the largest width dimension at both ends in the thickness direction. Therefore, the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other. The concave dry joint material 4 having a constricted central portion in the thickness direction is provided so as to be sandwiched between a pair of convex dry joint materials 3, and the convex dry joint material 3 is formed from both sides in the width direction. Since it is pressed, the movement of the concave dry joint material 4 in the thickness direction is suppressed, and the concave dry joint material 4 can be suppressed from being pushed out (falling off) from the joint portion 10.

  Further, in the joint structure 2 according to the first embodiment, since both the convex dry joint material 3 and the concave dry joint material 4 are elastic bodies, the length (joint width) of the joint portion 10 in the width direction is temporarily assumed. Even if it is displaced, the convex dry joint material 3 and the concave dry joint material 4 can appropriately follow the displacement. Further, since both are elastic bodies, the convex dry joint material 3 and the concave dry joint material 4 which are locked with each other can be brought into pressure contact with each other. By these, it is possible to suppress the formation of a gap between the outer wall panels 1A. By suppressing the falling of the concave dry joint material 4 and suppressing the formation of a gap between the outer wall panels 1A, it is possible to ensure the waterproofness in the joint structure 2.

  Further, since the joint structure 2 is a joint structure by a dry construction method in which the convex dry joint material 3 and the concave dry joint material 4 which are dry joint materials are attached to the joint portion 10, the joint structure is formed by a dry construction method. Compared with the joint structure, it can be easily constructed. From the above, according to the joint structure 2 according to the first embodiment, it is possible to ensure the ease of construction and the waterproofness.

  In the joint structure 2, since both the convex dry joint material 3 and the concave dry joint material 4 are elastic bodies, the followability with respect to the displacement of the joint width and the adhesion between the dry joint materials are further enhanced. It is possible to further secure the waterproof property in the joint structure 2.

  The convex dry joint material 3 and the concave dry joint material 4 are adhered to each other. As a result, the adhesion between the dry joint materials is increased, and the waterproof property of the joint structure 2 is further secured. Further, the convex dry joint material 3 and the concave dry joint material 4 are adhered by a wet sealing material 5. Thereby, the convex dry joint material 3 and the concave dry joint material 4 can be carried to the site in an independent state and bonded at the site. This makes it possible to improve workability.

  Further, when the convex dry joint material 3, the concave dry joint material 4 and the wet sealing material 5 are made of the same material, the adhesion between the dry joint materials can be further enhanced. That is, when a large force is applied to the joint structure 2 due to an earthquake or the like, the convex dry joint material 3, the concave dry joint material 4 and the wet sealing material 5 are made of the same material, so The applied force can be made uniform, and it is possible to prevent the adhesiveness between the dry joint materials from being lowered due to the biased application of a part of the configuration.

  Further, the convex dry joint material 3 provided on the vertical surfaces 11b of the pair of outer wall panels 1A is a convex member, and the concave dry joint material 4 provided between the convex dry joint materials 3 is a concave member, The joint structure can be easily constructed. That is, the side surface portion 4a of the concave dry joint material 4 is made to follow the convex shape of the convex dry joint material 3 provided on the vertical surfaces 11b of the pair of outer wall panels 1A to form the concave shape from the surface side of the outer wall panel 1A. By pushing in the dry joint material 4, the joint structure can be easily constructed.

  Further, the width dimension D2 of the concave dry joint material 4 is larger than the spacing dimension D1 between the convex dry joint materials 3 provided on the vertical surfaces 11b of the pair of outer wall panels 1A. The relationship between the spacing dimension D1 between the convex dry joint materials 3 and the width dimension D2 of the concave dry joint material 4 is such that the convex dry joint material 3 and the side surface portion 4a are in contact with each other (close contact), and all in the thickness direction. Holds in the area of. As a result, both side surface portions 4a of the concave dry joint material 4 are pressed by the pair of convex dry joint materials 3, and the adhesion between the convex dry joint material 3 and the concave dry joint material 4 is improved. be able to.

  In addition, the concave dry joint material 4 is not provided between the convex dry joint material 3 and the portion where the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other (the portion in contact with each other). That is, in the state where the concave dry joint material 4 is not pressed by the pair of convex dry joint materials 3, the maximum length X1 of the convex dry joint material 3 in the width direction is the maximum length of the concave dry joint material 4 in the width direction. The maximum length Y1 in the thickness direction of the convex dry joint material 3 is longer than the length X2, and is longer than the maximum length Y2 in the thickness direction of the concave dry joint material 4. Accordingly, the convex shape can be made larger than the concave shape in the portions that are locked with each other. Thereby, the adhesion between the convex dry joint material 3 and the concave dry joint material 4 can be further enhanced.

Further, the convex portion 3c of the convex dry joint material 3 and the concave portion 4c of the concave dry joint material 4 are constituted by curved surfaces, and the radius of curvature R1 of the convex portion 3c of the convex dry joint material 3 is the concave dry joint material 4 The radius of curvature R2 of the concave portion 4c is not less than R2. As a result, the convex arc portion of the convex dry joint material 3 comes into contact with the side surface portion 4a of the concave dry joint material 4, and a gap is generated between the convex dry joint material 3 and the concave dry joint material 4. Can be suppressed.

  The surface 4 b of the concave dry joint material 4 covers the surface of the joint 10 in the joint structure 2. As a result, the waterproofness can be reliably ensured, and the aesthetic appearance from the front surface side of the joint structure 2 can be improved because the bottom surface portion 12 is not visually recognized.

  Moreover, the bottom surface part 12 extended toward the outer wall panel 1A direction (width direction) which opposes from the perpendicular surface of a pair of outer wall panel 1A is provided, and the maximum length W1 of the convex dry joint material 3 in the width direction is: It is shorter than the width W2 of the bottom portion 12 in the width direction. As a result, in the outer wall panel 1A, the tip of the bottom surface portion 12 projects more than the convex dry joint material 3. Therefore, when the outer wall panel 1A is piled up, when the outer wall panel 1A is hoisted by a nylon sling, etc., it is possible to avoid the convex dry type joint material 3 from hitting another object and being damaged, and the workability is improved. , Adhesion, and watertightness can be further improved.

[Second Embodiment]
Next, with reference to FIG. 5, a structure (joint portion structure 2A) formed in the joint portion 10A according to the second embodiment will be described. The joint structure 2A according to the second embodiment will be described focusing on the differences from the joint structure 2 according to the first embodiment, and similar elements and structures will be designated by the same reference numerals and detailed description will be given. The description is omitted.

  In the joint structure 2 according to the first embodiment, the repair sheet 18 is attached to the surface 4b of the concave dry joint material 4, whereas in the joint structure 2A according to the second embodiment, the concave dry joint material 4 is used. A coating 25 (on-site coating) is applied to the surface 4b of the. The paint 25 is a multicolor paint similar to the paint 15. The coating 25 is applied to the upper surface of the coating 15 that is continuous with the surface 4b as well as the surface 4b of the concave dry joint material 4. The coating 25 is applied at the construction site. That is, in the first embodiment, an example in which the repair sheet 18 is attached to the surface 4b at the construction site has been described, but in the second embodiment, the surface 4b and the top surface of the coating 15 continuous to the surface 4b are painted on the top surface of the coating 15 at the construction site. 25 is applied.

  In such a joint structure 2A, the same multicolored paint (paint 15 or paint 25) is applied to all the areas visually recognized from the front surface side. Therefore, the appearance of the joint structure 2A from the front side can be further improved. Further, since the repair sheet 18 used in the first embodiment is unnecessary, it is possible to secure the aesthetic appearance while reducing the number of articles.

[Third Embodiment]
Next, with reference to FIGS. 6A and 6B, a structure (joint part structure 2B) formed in the joint part 10B according to the third embodiment will be described. The joint structure 2B according to the third embodiment will be described focusing on the differences from the joint structure 2 according to the first embodiment and the joint structure 2A according to the second embodiment, and similar elements and structures will be described. Are denoted by the same reference numerals and detailed description thereof will be omitted.

  In the joint structure 2B according to the third embodiment, a coating film 35 (preceding coating film) previously formed in a factory or the like is provided on the surface 4b of the concave dry joint material 4. The coating film 35 is a coating film formed of the same multicolored coating material as the coating 15 applied to the surface of the outer wall panel 1A, that is, the surface such as the inclined surface 11a. Since the coating film 35 is provided, the surface 4b (more specifically, the upper layer of the surface 4b) of the concave dry joint material 4 is applied to the surface of the outer wall panel 1A (more specifically, the surface such as the inclined surface 11a). It has a multicolored pattern similar to 15).

  In such a joint structure 2B, it is possible to create a sense of unity between the joint structure and the outer wall panel 1A, and it is possible to further improve the aesthetic appearance. Further, since the coating film 35 is a preceding coating film formed in advance in a factory or the like, the work of attaching the repair sheet 18 and the work of applying the coating 25 at the construction site are unnecessary, and the workability is improved.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, it has been described that the convex dry joint material 3 is a kamaboko-shaped (substantially semicircular cross section) convex member, and the concave dry joint material 4 is a concave member having a concave shape corresponding to the shape. The convex shape (or concave shape) of each of the mold dry joint material and the concave dry joint material is not limited to this, as long as they are engaged with each other. That is, as shown in FIG. 7A, a convex dry joint material 3x which is a triangular convex member and a concave dry joint material 4x which is a concave member having a concave shape corresponding to the triangular shape are provided. It may be configured to engage with each other, or as shown in FIG. 7B, has a convex dry joint material 3y which is a trapezoidal convex member and a concave shape corresponding to the trapezoidal mold. The concave dry joint material 4y, which is a concave material, may be configured to engage with each other, or as shown in FIG. 7C, the convex dry joint material 3z, which is a pentagonal convex member, The concave dry joint material 4z, which is a concave material having a concave shape corresponding to the pentagonal shape, may be configured to engage with each other.

  Further, the concave dry joint material 4 has been described as having a wedge-shaped end on the front surface side, but the invention is not limited to this. In the concave dry joint material 4, since all the side surface portions 4a have a concave shape corresponding to the convex shape of the convex dry joint material 3, the surface side end portion has a wedge shape as described above. On the other hand, for example, as shown in FIG. 8, when the convex dry type joint material 3v is provided in a portion of the vertical surface 11b that is continuous with the bottom surface portion 12, the concave dry type joint material 4v has the side surface portion 4p. Only the portion facing the convex dry joint material 3v has a concave shape, and the portion facing the vertical surface 11b has a flat shape extending along the vertical surface 11b. When such a concave dry joint material 4v is used, a portion of the side surface portion 4p that extends along the vertical surface 11b is in a state where the concave dry joint material 4 is provided between the convex dry joint materials 3v. It is in close contact with the vertical surface 11b.

  Further, the bottom surface portion 12 does not necessarily have to be provided. For example, as shown in FIG. 9, the above-described joint structure is formed between the outer wall panels 1B where the bottom surface portion 12 is not provided. Good. Further, the first dry joint material provided on the side surface of the outer wall panel 1A is a concave member, and the second dry joint material provided so as to be sandwiched between the first dry joint materials is a convex member. Good. Further, at least one of the first dry joint material and the second dry joint material may be an elastic body. Further, the first dry joint material and the second dry joint material do not necessarily have to be adhered to each other.

  1A, 1B ... Outer wall panel, 2, 2A, 2B ... Joint structure, 3, 3v, 3x, 3y, 3z ... Convex dry type joint material, 3c ... Convex part, 4, 4v, 4x, 4y, 4z ... Recessed dry type Joint material, 4b ... Surface, 4c ... Recessed portion, 5 ... Wet sealing material, 10, 10A, 10B ... Joint portion, 11b ... Vertical surface (side surface), 12 ... Bottom portion.

Claims (10)

A joint structure formed between a pair of exterior panels,
A first dry joint material provided on each side surface of the pair of exterior panels;
A second dry joint material provided so as to be sandwiched between the first dry joint material of the pair of exterior panels,
At least one of the first dry joint material and the second dry joint material is an elastic body,
The first dry joint material is convex member having a convex portion, Ri concave member der having a recess in which the second dry grouting mutually engage each other in correspondence to the convex portion,
The convex portion and the concave portion are formed by a curved surface,
The radius of curvature of the convex portion of the first dry joint material is greater than or equal to the radius of curvature of the concave portion of the second dry joint material ,
Joint structure.   The joint structure according to claim 1, wherein both the first dry joint material and the second dry joint material are elastic bodies.   The joint structure according to claim 1 or 2, wherein the first dry joint material and the second dry joint material are adhered to each other.   The joint structure according to claim 3, wherein the first dry joint material and the second dry joint material are bonded by a wet sealing material.   The joint structure according to claim 4, wherein the first dry joint material, the second dry joint material, and the wet sealing material are the same material. Than spacing dimension between the first dry joint material provided on each side of the pair of outer panels, the width of the second dry joint material is large, any one of claims 1 to 5 Joint structure. The surface of the second dry joint material covers the surface of the joint portion structure, joints structure of any one of claims 1-6. The joint structure according to claim 7 , wherein the surface of the second dry joint material has a pattern of a similar color to the surface of the exterior panel. The joint structure according to claim 7 , wherein the surface of the second dry joint material has a multicolored pattern similar to the surface of the exterior panel. Further comprising a bottom surface portion extending from the side surface of each of the pair of exterior panels toward the exterior panel facing each other,
The joint part according to any one of claims 1 to 9 , wherein the maximum length of the first dry joint material in the facing exterior panel direction is shorter than the length of the bottom surface part in the opposing exterior panel direction. Construction.

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