JPS6133163Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wall structure for a building using an extruded exterior wall material having a joint end portion that is both waterproof and heat insulating.

Conventionally, exterior wall materials made of asbestos-cement material or similar materials have been joined in a butt state at the lateral joints, and rain-proofed using jointers that sandwich both exterior wall materials from the front and back.

However, rainwater and hot or cold air entered through the gaps between the wall and the exterior wall material, causing fatal moisture damage to the walls and resulting in poor insulation. In addition, the end faces of the joints were misaligned, creating unevenness at the joints, resulting in an unsightly appearance as a wall surface.

The object of the present invention is to eliminate the above-mentioned drawbacks, and provide a wall structure for a building in which the joint portion is highly waterproof and heat insulating when stretched over the wall base surface, and has a good wall surface finish.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIGS. 1 to 5, the exterior wall material 1 is made of asbestos cement extrusion material in the shape of a horizontally long flat plate, and a plurality of cavities 11 are provided in the exterior wall material 1 to be penetrated in parallel at equal intervals along the length direction of the exterior wall material 1. . Cavities help reduce the weight of exterior wall materials, improve insulation, and reduce costs by saving on materials. The cavity 11 is partitioned by a partition strip 12 extending in the length direction. The exterior wall material 1 is composed of a main body 10, and an upper joint part 13 and a lower joint part 14 formed on the upper and lower sides of the main body 10 in the width direction. A joint groove 15 is carved along the entire length. The upper joint portion 13 is formed into a joint shape and is provided with a facing surface that overlaps in the thickness direction, and the lower joint portion 14 is also formed into a joint shape and is provided with a surface that faces back and overlaps in the thickness direction. That is, in the longitudinal cross-sectional view (FIG. 2), the upper joint portion 13 has a sloped step portion 13a facing upward from the outer surface of the wall, a short horizontal portion 13e above the step portion 13a, and a step portion 13a facing outward, which is the overlapping surface. The inclined surface 13b is further connected with an upward convex portion 13c and an upward shoulder portion 13d. These are formed continuously in the length direction of the outer wall material 1. On the other hand, the lower joint portion 14 includes, in order from the front surface, a downward surface 14a, a short horizontal portion 14e, a reverse inclined surface 14b which is an overlapping surface,
It consists of a downward groove 14c and a downward surface 14d.

A plurality of grooves 13f and 14f are formed in the front-facing inclined surface 13b and the backward-facing inclined surface 14b, respectively, along the length direction of the outer wall material. These grooves 13f and 14f are at different positions when the outer wall material 1 is stretched and both inclined portions 13b and 14b face each other.

When the two pieces of this exterior wall material 1 are joined vertically with their lengths oriented in the horizontal direction, as shown in FIG. The material 4 is embedded, and the backward inclined surface 14b of the upper outer wall material 1 and the upward inclined surface 13b of the lower wall material 1 are made to face each other, and the outer surfaces of both outer wall materials are connected flush with each other. In this connected state, a slight gap is formed between the opposing inclined surfaces 13b and 14b. This gap is divided into a plurality of parts along the direction of inclination of the inclined surface by sealing with the sealing material 4. Therefore, these grooves 13f, 14
By filling f with an appropriate amount of sealing material, a plurality of long spaces 5 are formed in parallel along the length direction of the outer wall material between the two inclined surfaces. Therefore, even if rainwater enters from the horizontal joint and tries to rise along both slopes,
Like a labyrinth packing effect, the pressure is reduced by the plurality of divided spaces 5, preventing the entry of wind and rain, and exhibiting excellent waterproof properties. It also exhibits high heat insulation properties against the intrusion of hot and cold air. When the outer wall material 1 is stretched vertically with its length direction, the space 5 is
Each also serves as a drainage ditch in the vertical direction. Further, the jointer groove 15 penetrates near the back surface of the wall material at the upper joint portion 13 to the upper end, and penetrates the front surface side of the wall material at the main body 10 and the lower joint portion 14 to the lower end, and In the connecting portion extending from to the main body 10, the connecting portion is inclined so as to approach the wall surface side as it goes downward.

On the other hand, for joining the outer wall material 1 in the left-right direction, a jointer 2 having the same length as the jointer groove 15 is fitted into the jointer groove 15. That is, as shown in FIG. 5, the jointer 2 is a vertically elongated structure in which the part attached to the upper joint part 13 of the outer wall material 1 and the part attached to the outer wall material main body 10 and the lower joint part 14 are integrally formed in a parallel state. The main body 2a is shaped like a strip and has a width that matches the width of the jointer groove 15 formed by butting two outer wall materials, and can be elastically deformed and bent according to the thickness of the groove 15. , and folded portions 2b that are symmetrically curved in a U-shape so as to approach each other on the same side from the left and right ends of the main body 2a. The jointer groove 15 is formed by cutting out the partition strip 12 in FIG.
It may be bored in the thick part in front of the cavity 11. In order to strongly prevent rainwater from permeating through the joint surfaces, the jointer 2 has a section that corresponds to the left and right butt joints in the longitudinal direction of the outer wall material at the inner part of the folded part 2b and the front side of the central part of the main body 2a. Caulking material or adhesive 5 is applied to the portion in advance.

The exterior wall materials 1 are stretched horizontally and vertically with their respective end faces aligned, but in order to attach these exterior wall materials 1 to the studs 3 or to the frame, it is necessary to assemble and stretch the lowermost first stage in the length direction. , work proceeds from the bottom of the wall upwards. That is, first, the jointer 2 is fitted into both jointer grooves 15, 15 on the abutting end surfaces of the respective outer wall materials on which the first lower stage is formed, and the joints are joined. Subsequently, the second stage is assembled in the same manner as above, and the sealing material 4 is filled in the groove 13f of the front-facing inclined surface 13b of the first stage and the groove 14f of the backward-facing inclined surface 14b of the second stage, respectively. It is stretched above the first stage with its left and right end surfaces 16 aligned with the left and right end surfaces of the first stage on the same vertical plane. At this time, the upward convex strip 13c of the first stage is replaced by the downward concave strip 1 of the second stage.
4c, and placed so that the downward facing surface 14d of the second stage is in contact with the upward facing shoulder 13d of the first stage. Therefore, the first stage's front-facing inclined surface 13b and the second stage's backward-facing inclined surface 14b are intermittently adhered by the sealant 4, and the lower part of the second stage overlaps with the front surface in the wall thickness direction of the upper part of the first stage. Therefore, the first and second stage jointers 2 also overlap.

Therefore, even if rainwater flows down through the upper joint, it will be caught by the lower joint, and the rainwater will not flow through the vertical joints of the exterior wall material and seep into the inside of the wall. Also, Jiyoina 2
is fitted into the joint groove in an elastic state, so the horizontal joints of each exterior wall material 1 are strengthened, unevenness at the joint part is eliminated, and the joint groove itself also serves as a sealed drainage channel. .

In FIG. 6, the grooves 13f and 14f of the front-facing inclined surface 13b and the backward-facing inclined surface are formed into wedge-shaped grooves 13g and 14g that widen toward the back, making it easier to attach the sealant compared to the embodiment described above. Becomes strong. Further, as shown in FIG. 7, grooves 13f and 14
f may be provided facing each other.

As described above, the wall structure of the present invention allows even if rainwater, hot air, or cold air invades from the outside at the joint, the pressure is completely reduced between the facing slope and the backward slope of the two exterior wall materials. will be cut off. Therefore, waterproofness and heat insulation properties were ensured. In addition, a jointer groove is provided on the end surface of the joint of the wall material, and a jointer along the vertical direction is fitted into the groove, so that rainwater flowing down along the longitudinal butt joint of the wall material can be absorbed into the wall. It does not seep through. Furthermore, the connection part between the upper joint and the main body of the jointer groove is sloped, and the jointer is fitted along the inclined groove, so that rainwater that enters from the wall surface side does not accumulate in the middle and is effectively used. can be guided downward.

[Brief explanation of the drawing]

Fig. 1 is a front view of a wall structure showing an embodiment of the present invention, Fig. 2 is an enlarged sectional fragmentary view of Fig. 1, Fig. 3 is a partial inclined view of the external wall material, and Fig. 4 is a joint section of the external wall material. 5 is a partially enlarged cross-sectional view of FIG.
The fragmentary cross-sectional view, FIG. 6, and FIG. 7 are partially enlarged sectional views of the joint portion of the outer wall material showing other embodiments. DESCRIPTION OF SYMBOLS 1... Wall material, 13... Upper joint part, 13b... Front inclined surface, 13f... Concave groove, 14... Lower joint part, 14b... Reverse inclined surface, 14f... Concave groove,
15...Joiner groove, 16...Right and left end faces, 2...
Jiyoina, 3...Studs.

Claims (1)

[Scope of utility model registration request] A large number of oblong rectangular exterior wall materials, each consisting of a main body and upper and lower joints formed above and below the main body, each having a plurality of cavities running through it in the length direction via partition strips, are placed on the wall base. They are stretched side by side in the left, right, up and down directions, and the lower joint part is formed into a joint shape and has an overlapping surface facing forward in the thickness direction, and the lower joint part is also formed into a joint shape and has a facing overlapping surface in the thickness direction. At the joining portion of the upper and lower wall materials, these two overlapping surfaces are polymerized oppositely in the wall thickness direction, and a plurality of grooves are provided along the length direction in both the overlapping surfaces, and a sealing material is applied to these grooves. is embedded, and a jointer groove is provided on both longitudinal end faces of the wall material over the entire length in the width direction of the wall material, and the jointer groove penetrates near the back surface of the wall material at the upper joint portion to the upper end, Penetrating the surface side of the wall material to the lower end at the main body and the lower joint part,
A wall structure of a building, characterized in that the connecting portion from the upper joint to the main body is inclined downward toward the wall surface side, and a waterproof jointer is fitted in the jointer groove.