JP5286387B2 - Composite lath, method for manufacturing the same, and outer wall ventilation structure - Google Patents

Description

  The present invention relates to a composite lath for constructing an outer wall of a building, a manufacturing method thereof, and an outer wall ventilation structure using the composite lath.

The wall structure of a building is durable when moisture such as rainwater or moisture enters the outer wall, and the moisture stays, decaying wood such as pillars and foundations and promoting damage of white ants. It has been pointed out that it has a negative effect. In recent years, it has been pointed out that there is a problem of dew condensation inside the outer wall due to the progress of high airtightness and high thermal insulation of the building and a large temperature difference between the inside and outside of the building outer wall.
Therefore, the demand for a construction method (outer wall ventilation method) for forming a ventilation layer inside the outer wall is increasing in order to solve the problems of moisture and condensation.

A conventional outer wall ventilation method (or outer wall ventilation structure) is used to form a ventilation layer between an inner wall panel of a building and a mortar wall, as shown in FIGS. The ventilation wall is secured by attaching the trunk edge to the inner wall panel at an interval and attaching the lath to the trunk edge.
Moreover, in Fig.5 (a) of patent document 2, as a prior art, between the waterproof sheet | seat (or base plywood) 102 of the outer surface of the housing 101 (a pillar, a stud, etc.) of a building, and the mortar layer 105, There is disclosed a configuration in which vertical trunk edges 103 are arranged at predetermined intervals so that a ventilation layer 106 is formed.

  By the way, the applicant of the present application is that the longitudinal force bone and the lateral force bone are arranged in a lattice shape in the vertical and horizontal directions with the lath in between, and the waterproof paper is made of a tape material provided between the longitudinal force bone and the lath. A composite lath is backed (see Patent Document 3).

Japanese Patent Laid-Open No. 11-152872 JP 2008-95445 A JP 2008-240365 A

  As in the above-mentioned Patent Document 1, it has been common to form a ventilation layer by attaching a trunk edge in the vertical direction inside the outer wall panel of a building at a predetermined interval and pasting a lath on the trunk edge. It was a simple aeration method.

1 to 3 of Patent Document 2 disclose an invention that does not use a trunk edge. Specifically, when a base material for a building outer wall in which a waterproof sheet, a lath, and a ventilation member are integrated is developed, and a housing of the building is assembled, a step of attaching the base material (lass) is performed. An invention that can form the above is disclosed.
According to the building outer wall base material according to Patent Document 2, the step of attaching the trunk edge can be omitted, so that the construction period can be shortened. However, a ventilation member is separately required to form the ventilation layer.

  The object of the present invention is to improve the composite lath according to the above-mentioned Patent Document 3 without the need to use a member such as a trunk edge or a ventilation member for forming the ventilation layer. It is an object of the present invention to provide a composite lath excellent in economic efficiency and workability, a manufacturing method thereof, and an outer wall ventilation structure using the composite lath.

As a means for solving the above-mentioned background art, the composite lath according to the invention described in claim 1 includes a plurality of longitudinal force bones arranged at intervals in the transverse direction and a direction perpendicular to the longitudinal force bones. This is a composite lath composed of a lateral force bone arranged at intervals and a lath mesh joined to either the longitudinal force bone or the lateral force bone, or both, and a waterproof paper lined on the back of the lath mesh. And
The lateral force bone and lath net of the portion avoiding the longitudinal force bone are protruded in the shape of a concave groove toward the back surface, and the ridges parallel to the longitudinal force bone are formed with a certain interval. And

  According to a second aspect of the present invention, in the composite lath according to the first aspect, a lath net is disposed between the longitudinal force bone and the lateral force bone, and the longitudinal force bone and the lath net are arranged in the composite lath. A waterproof paper is lined with a tape material provided between the two.

  According to a third aspect of the present invention, in the composite lath according to the first or second aspect, the longitudinal force bone is located at an outer position on both sides of the base of the ridge so as to sandwich the ridge. It is provided.

  According to a fourth aspect of the present invention, in the composite lath according to any one of the first to third aspects, the protrusion is intermittently provided with a recess pushed back to the surface side in order to secure a lateral air passage. It is provided in.

  The invention described in claim 5 is characterized in that, in the composite lath described in claim 4, the concave portion is provided in a central portion between adjacent lateral force bones.

The manufacturing method of the composite lath according to the invention described in claim 6 includes a plurality of longitudinal force bones arranged at intervals in the lateral direction and a plurality of lateral forces arranged at intervals in a direction perpendicular to the longitudinal force bones. A composite lath comprising a bone, a lath net and a waterproof paper lined on the back of the lath net is projected into the back side by projecting the lateral force bone and lath net of the portion avoiding the longitudinal force bone to the back side. Protruding ridges parallel to the ribs are formed at regular intervals,
After that, push back to the opposite side of the direction that protruded the ribs between the lateral force bones,
The ventilation path is formed in both the vertical direction and the horizontal direction.

The outer wall ventilation structure according to the invention described in claim 7 is an outer wall ventilation structure using the composite lath according to any one of claims 1 to 5,
The composite lath forms an air-permeable layer with the outer wall panel by abutting the top of the ridge portion with the outer wall panel attached to the pillars and the studs constituting the building frame and fixing with the fixture. That it is stretched to
Mortar is applied to the stretched composite lath to form a mortar wall.

According to the present invention, a number of longitudinal force bones arranged at intervals in the transverse direction, a number of transverse force bones arranged at intervals in a direction perpendicular to the longitudinal force bone, and the longitudinal force bone or the transverse force bone. A lath mesh bonded to either or both of them and a composite lath having a waterproof paper lined on the back of the lath net, and the lateral force bone and lath net in a portion that avoids the longitudinal force bone are recessed to the back side. Since it is carried out in a configuration in which ridges that protrude in a groove shape and are parallel to the longitudinal force bone are formed at a certain interval, there is no need for a trunk edge, and a special rod-shaped ventilation member is added to the composite lath. There is no need to install.
Therefore, without using a member such as a trunk edge or a ventilation member for forming the ventilation layer, it is possible to form the ventilation layer at the same time as performing the attaching process of the composite lath after assembling the housing of the building.
Therefore, the composite lath excellent in economy and workability, its manufacturing method, and the outer wall ventilation structure using the composite lath can be realized.

  In addition, when the composite lath according to claim 4 and claim 5 is used, even when a portion that becomes a window opening is formed on the outer wall, the concave portion provided intermittently on the protruding portion of the composite lath is provided. Since it plays the role of a horizontal air passage, for example, it can be smoothly circulated without interfering with the flow path of the air that moves upward from below in the air layer due to temperature difference, and dew condensation in the air layer is ensured. Can be prevented.

(A) is a front view which shows the state which stretched the composite lath concerning Example 1 to the outer wall panel, (B) is the same top view, (C) is CC of (A). FIG. However, for (C), the illustration of the building frame including the outer wall panel is omitted. It is the X section enlarged view of Drawing 1 (B). It is a top view which shows the state which fixed the composite lath concerning FIG. 2 to the outer wall panel, and applied the mortar. 2 is a front view showing a composite lath used to form the composite lath according to Embodiment 1. FIG. FIG. 5 is an exploded perspective view showing components of the composite lath according to FIG. 4. (A) is a front view which shows the composite lath which concerns on Example 2, (B) is BB arrow sectional drawing of (A). It is a front view which shows the state which has arrange | positioned the composite lath which concerns on Example 2 so that the window frame of the opening part for windows may be enclosed. In FIG. 7, it is explanatory drawing showing the position of the protrusion part and recessed part of the composite lath which concerns on Example 2. FIG. An arrow F in the figure shows an example of a ventilation path.

  Next, an embodiment of the composite lath according to the present invention will be described with reference to the drawings.

1 and 2 show an embodiment of a composite lath 10 according to the present invention. This composite lath 10 is stretched on the outer wall panel 13 prior to the mortar coating operation.
The composite lath 10 includes a plurality of longitudinal force bones 1 spaced apart in the transverse direction, a plurality of transverse force bones 2 spaced apart in a direction perpendicular to the longitudinal force bone 1 and the longitudinal force bone 1. Alternatively, a lath net 3 joined to either the lateral force bone 2 or both 1 and 2, and a flat composite lath 10 ′ (FIGS. 4 and 5) formed by a waterproof paper 5 lined on the back of the lath net 3. By projecting the lateral force bone 2 and the lath net 3 of the portion D avoiding the longitudinal force bone 1 in the shape of a concave groove toward the back side, the ridge portion 10a parallel to the longitudinal force bone 1 is fixed. Are formed with an interval of.
Incidentally, as shown in FIGS. 4 and 5, the flat composite lath 10 ′ used in the present embodiment has a lath net 3 disposed between the longitudinal force bone 1 and the lateral force bone 2 as an example. The waterproof paper 5 is lined with a tape material 4 provided between the longitudinal force bone 1 and the lath net 3. The configuration of the flat plate-like composite lath 10 ′ is not limited to this, and the lath net 3 is implemented on the back surface side of the longitudinal force bone 1 or the surface side of the lateral force bone 2. You can also

  The protruding portion 10a (the part D) is provided at an interval that matches at least the installation interval (usually about 455 mm) of the pillars 11 and the inter-posts 12 constituting the building frame. Incidentally, in the present embodiment, as shown in FIG. 1B, a configuration in which a protrusion 10a is further provided in the central portion between the column 11 and the inter-column 12 (that is, an installation interval of about 227.5 mm). ).

  In short, the composite lath 10 according to the present invention is based on the flat plate-shaped composite lath 10 'shown in FIG. 4, and the lateral force bone 2 and lath net of the portion D avoiding the longitudinal force bone 1 of the composite lath 10'. 3 (including the tape material 4 and the waterproof paper 5 associated therewith) are protruded (curved) by press working or the like, and the protrusions 10a having a certain height are formed at certain intervals.

  Incidentally, the flat plate-like composite lath 10 'has substantially the same configuration as the composite lath disclosed in Japanese Patent Application Laid-Open No. 2008-240365 previously filed by the present applicant, for example. However, as compared with the composite lath disclosed in the publication, the flat composite lath 10 'used in the present embodiment is devised in the arrangement of the longitudinal force bone 1 as will be described later.

That is, the longitudinal force bone 1 and the lateral force bone 2 are made of a steel wire having a diameter of about 1 to 2 mm or a galvanized material that is resistant to corrosion, and is larger than the diameter of the lath net 3 (about 0.6 to 0.8 mm). It is composed of a large diameter.
Incidentally, as an interval for arranging the longitudinal force bones 1 in parallel, the two longitudinal force bones 1 and 1 are separated by about 100 mm so as to sandwich the portion D forming the protruding portion 10a. Has been placed. The said space | interval is made into the space | interval corresponded to the slightly outward position (about 20 mm in a present Example) of the base part both sides of the protrusion 10a to form. Further, the adjacent pair of longitudinal force bones 1 and 1 are arranged with an interval of about 150 mm.
The significance of carrying out at such an interval is to maintain the shape of the waterproof paper 5 attached to the tape material 4 via the longitudinal force bone 1, and the longitudinal force bone 1 is against the pressing force at the time of mortar application. Therefore, it is possible to prevent the deformation of the waterproof paper 5, and thus the protruding portion 10a, and to economically construct the outer wall with an appropriate mortar coating amount. In addition, it also serves as a mark for the operation of forming the protrusion 10a on the composite lath 10.
On the other hand, the interval at which the lateral force bones 2 are arranged in parallel is, for example, about 150 mm, but is not limited thereto, and can be appropriately changed according to the structural design.
The lath net 3 is a metal lath made of expanded metal or a wire lath made of steel wire.
As the tape material 4, a strip-shaped adhesive tape is suitably employed.
The waterproof paper 5 is preferably a moisture permeable waterproof paper or a waterproof sheet.
Embodiments of the longitudinal force bone 1 and the lateral force bone 2 constituting the flat composite lath 10 'are shown in more detail in the above-mentioned Japanese Patent Application Laid-Open No. 2008-240365.

Next, an example of the manufacturing method of the flat composite lath 10 'according to the present embodiment will be described with reference to FIGS.
First, the lath net 3 is placed on the lateral force bone 2 arranged in parallel at substantially equal intervals (for example, about 150 mm), and the tape material 4 is placed on the lath net 3. The longitudinal force bones 1 arranged in parallel at the intervals described above are placed. Incidentally, the tape material 4 according to the illustrated example is placed close to and in parallel with the lateral force bone 2.
Next, the intersection of the lateral force bone 2 and the longitudinal force bone 1 is fixed by spot welding or the like, and the lateral force bone 2 and the lath mesh 3 and / or the longitudinal force bone 1 and the lath mesh 3 are fixed by spot welding or the like. And integrate.
Finally, waterproof paper 5 is bonded onto the tape material 4. At this time, the bonding work of the tape material 4 and the waterproof paper 5 is performed through the longitudinal force bone 1.
In the composite lath 10 ′ according to the illustrated example, the waterproof paper 5 is bonded in a positional relationship slightly shifted from the center of the lath net 3 to the upper left. This is due to work considerations for stretching a plurality of composite laths 10 'without gaps, and the design can be changed as appropriate.
An embodiment of the method for producing the flat plate-shaped composite lath 10 ′ is also shown in more detail in the aforementioned Japanese Patent Application Laid-Open No. 2008-240365.

Thus, the composite lath 10 according to the present invention includes the lateral force bone and the lath net 3 (the tape material 4 and the waterproof paper 5 associated therewith) that avoid the longitudinal force bone 1 of the flat composite lath 10 ′ described above. ) Is projected to the back surface side of the composite lath 10 by pressing or the like, thereby forming a groove-shaped protrusion 10a having a constant height parallel to the longitudinal bone 1. .
The height of the ridge 10a (see symbol H in FIG. 2) is set to an appropriate height for forming a ventilation layer in the wall. In this embodiment, the height is about 15 mm, but is not limited thereto. However, it can be appropriately changed according to the structural design.

Therefore, the outer wall ventilation structure using the composite lath 10 is implemented by the following method.
First, a building frame including the pillar 11, the spacer 12, the heat insulating material, and the like is constructed, and the outer wall panel 13 is attached to the outer surface of the pillar 11 and the spacer 12.
Next, the protrusion 10a of the composite lath 10 is aligned so as to correspond to the pillar 11 and the inter-column 12, and the top of the protrusion 10a is brought into contact with the outer wall panel 13 as shown in FIG. Then, the composite lath 10 is stretched by fixing with a fixing tool 6 such as a staple. The stretching operation of the composite lath 10 is repeated over a range necessary for the mortar coating operation so as not to generate a gap.
Finally, the outer wall is constructed by applying mortar 9 on the plurality of composite laths 10 stretched on the outer wall panel 13. Incidentally, reference numeral 8 in FIGS. 2 and 3 denotes a waterproof sheet that is attached to the surface of the outer wall panel 13.

  Therefore, according to the outer wall ventilation structure using the composite lath 10, the outer wall panel can be obtained only by performing the stretching operation of the composite lath 10 without using a member such as a trunk edge or a ventilation member for forming the ventilation layer. The ventilation layer 7 defined by the adjacent protrusion 10a can be formed between the composite lath 13 and the composite lath 10. Therefore, it is possible to solve the problem of moisture entering the outer wall and condensation in the outer wall due to a temperature difference.

6A and 6B show an example of a composite lath according to Example 2. FIG.
Compared with the composite lath 10 according to the first embodiment, the composite lath 20 is intermittently provided with concave portions 21 that are pushed back to the surface side in order to secure a lateral air passage in the protrusion 10a. Only the difference. The concave portion 21 is formed by pressing a predetermined portion of the ridge portion 10a (a central portion between the adjacent lateral force bones 2 in the illustrated example) with a flat portion of the composite lath 10 by pressing or the like. It is formed by pushing back to the same position.

  Since the composite lath 20 according to the second embodiment can also be stretched on the outer wall panel 13 in the same manner as the composite lath 10 according to the first embodiment, an adjacent protrusion is provided between the outer wall panel 13 and the composite lath 10. The ventilation layer 7 defined by the strip portion 10a can be formed. Therefore, there exists an effect similar to the said Example 1. FIG.

  In addition, according to this composite lath 20, as shown in FIG. That is, even when the composite lath 20 is stretched so as to surround the window frame 23 of the window opening 22, a lateral air passage can be secured by the concave portion 21 provided in the protrusion 10 a. For example, it is possible to smoothly prevent condensation in the ventilation layer 7 by smoothly flowing as indicated by an arrow F in FIG. 8 without interfering with the path of ventilation that moves upward from below in the ventilation layer 7 due to a temperature difference. it can.

  Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

1 Longitudinal Bone 2 Lateral Bone 3 Lath Net 4 Tape Material 5 Waterproof Paper 6 Fixing Tool (Staple)
7 breathable layer 8 waterproof sheet 9 mortar 10 composite lath 10 'composite lath 10a ridge 11 pillar 12 interpost 13 outer wall panel 20 composite lath 21 recess

Claims (7)

A plurality of longitudinal force bones spaced apart in the transverse direction and a number of lateral force bones spaced apart in a direction perpendicular to the longitudinal force bone and either the longitudinal force bone or the lateral force bone, or both A lath mesh joined to the lath and a back surface of the lath net with a waterproof paper lined,
The lateral force bone and lath net of the portion avoiding the longitudinal force bone are protruded in the shape of a concave groove toward the back surface, and the ridges parallel to the longitudinal force bone are formed with a certain interval. And composite lath.   The composite lath is characterized in that a lath net is disposed between the longitudinal force bone and the lateral force bone, and a waterproof paper is lined with a tape material provided between the longitudinal force bone and the lath net. The composite lath according to claim 1.   3. The composite lath according to claim 1, wherein the longitudinal force bone is provided at an outer position on both sides of the base of the ridge so as to sandwich the ridge.   The composite lath according to any one of claims 1 to 3, wherein the protrusion is intermittently provided with a recess pushed back to the surface side in order to secure a lateral air passage. .   5. The composite lath according to claim 4, wherein the concave portion is provided in a central portion between adjacent lateral force bones. A number of longitudinal force bones arranged at intervals in the transverse direction, a number of lateral force bones arranged at intervals in the direction perpendicular to the longitudinal force bones, a lath net, and a waterproof paper lined on the back of the lath net The horizontal lath bone and lath net of the part avoiding the longitudinal force bone are projected in a concave groove shape to the back side to form a ridge portion parallel to the longitudinal force bone with a certain interval. And
After that, push back to the opposite side of the direction that protruded the ribs between the lateral force bones,
A method for producing a composite lath, wherein the ventilation path is formed in both the vertical direction and the horizontal direction. An outer wall ventilation structure using the composite lath according to any one of claims 1 to 5,
The composite lath forms an air-permeable layer with the outer wall panel by abutting the top of the ridge portion with the outer wall panel attached to the pillars and the studs constituting the building frame and fixing with the fixture. That it is stretched to
A mortar wall is formed by applying mortar to the stretched composite lath to form an outer wall ventilation structure.

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