JP6576068B2 - Lath for exterior wall ventilation method - Google Patents

Description

  The present invention relates to an outer wall used for constructing an outer wall ventilation structure of a building by lining a waterproof paper on a lath composed of a strength bone and a wire rod having a diameter smaller than that of the strength bone, and fastened to a ventilation trunk edge. It belongs to the technical field of laths for ventilation methods.

In the construction of the outer wall structure of a building, in recent years, in order to solve the problem of moisture and condensation such as rainwater and moisture, as shown in FIG. 13, between the base material (for example, base plywood) a and the mortar outer wall b, A mortar-coated outer wall ventilation method in which a ventilation layer d is formed by interposing a ventilation cylinder edge c is often used.
In this outer wall aeration method, a lath g for outer wall ventilation method, which is integrated by backing a waterproof paper f on a lath e used for construction of the mortar outer wall b, is often used.
The ventilator edge c is usually attached to a pillar h standing upright at a pitch of about 455 mm via the base material a, but a lath g (lass e) for outer wall ventilation when the mortar b ′ is applied. In addition to the ventilation cylinder edge c, an auxiliary cylinder edge i made of wood or a resin material is generally provided in order to prevent deflection of the waterproof paper f). In general, one (or a plurality) of auxiliary cylinder edges i are arranged in a balanced manner between the ventilation cylinder edges c.

  By the way, if the out-of-plane rigidity can be increased without increasing the weight of the lath g for the outer wall ventilation method, the deflection of the lath g (the lath e or the waterproof paper f) can be suppressed. It is clear that it is advantageous in that it can improve the property and contribute to the construction of a higher quality mortar outer wall b.

  In order to increase the out-of-plane rigidity of the lath for the outer wall ventilation method, it is considered that the wire material (wire diameter of about 0.8 mm) constituting the lath is replaced with a thicker bone (wire diameter of 1.6 mm or more) than the conventional product. It is done. However, with this means, the weight of the lath is remarkably increased, so that it is difficult to handle and burdens the operator. Although the increase in the weight of the lath can be prevented by disposing the ribs at a distance from that of the conventional product, the density of the lath net is lowered, so the workability of the mortar coating work may be deteriorated and the quality of the outer wall of the mortar may be deteriorated. In addition, if the wire diameter exceeds 1.6 mm, it is difficult to cut the lath by hand, and it is also important to note that it is difficult to attach the lath to an opening or the like that needs to be aligned on the spot.

For example, Patent Literature 1 includes two documents of expanded metal and composite lath that have been devised in the form as prior art, and pointed out the respective problems, and the outer wall ventilation with increased rigidity (out-of-plane rigidity) Inventions relating to laths for construction methods are disclosed.
The characteristics (configuration and effect) of the invention described in Patent Document 1 are listed as follows.
・ Because the lath wire (expanded metal) wire that forms the mesh of the joint to be bonded to the waterproof sheet is formed larger in width than the wire that forms the mesh of the curved portion, the rigidity of the joint Becomes larger.
-Therefore, since a waterproof sheet can be supported by a joint part with large rigidity, the support force of a waterproof sheet improves and it becomes difficult to bend.
-Also, since the rigidity of the curved portion is increased by the arch action, it is possible to maintain a state separated from the waterproof sheet without increasing the width of the wire constituting the curved portion mesh, and the weight of the lath material Can be reduced.

JP 2012-97521 A

According to the lath for the outer wall ventilation method according to Patent Document 1, the out-of-plane rigidity of the joint portion between the waterproof sheet and the lath material is certainly increased, but the lath weight is increased too much because it is biased to improve the rigidity of the joint portion. As a result, the rigidity of the lath material itself has been reduced, and the balance of stiffening is lacking.
That is, the lath for the outer wall ventilation method compares all the wires in the range of the joint portion 32 (see FIG. 3 of the same document 1) formed in a mesh shape with the wires of the other curved portions 31, and has a thickness of 2 About 5 times (see Fig. 4). Even though this is an excessive stiffening design, the lath weight is remarkably increased, and therefore, the portions other than the joint portion 32 are not stiffened at all. As a measure of bitterness, the arch effect is merely expected by forming it in a curved shape.

However, when the lath material (expanded metal) is formed in a curved shape without any reinforcement, the stiffening by the arch effect is not sufficient. This is also clear from the analysis results by the applicant.
That is, the yield strength (section modulus) of the curved portion 31 formed in the arch shape does not increase so much, and thus it cannot be said that the bending portion 31 has rigidity capable of resisting the pressing force during the mortar coating operation. In combination with the high rigidity, the curved portion 31 may be crushed or deformed.
Therefore, the stable mortar coating operation cannot be performed, and there is a possibility that the workability is deteriorated and the quality of the outer wall of the mortar is deteriorated. In addition, since the rigidity (shape retention) of the curved portion 31 cannot be said to be sufficient, there is a problem that it is troublesome to be careful during transportation and handling. Of course, there is also a problem of bulkiness during transportation.

The present invention has been devised in view of the above-described problems of the background art, and the object of the present invention is to provide a corrugated process and a wire rod with almost no change in wire diameter (wire rod) / weight from a conventional product. Providing a lath for outer wall ventilation method that optimizes the arrangement to improve out-of-plane rigidity in a well-balanced manner, improve the workability of mortar coating work, and can build a high-strength, high-rigidity, high-quality mortar outer wall. There is to do.
Specifically, based on the analysis results by the applicant that the arch effect is hardly obtained even if a thin wire having a diameter of about 0.8 mm is arranged on the vertical wire to form an arch shape, As a result of improving the out-of-plane rigidity in a well-balanced manner by arranging the shape and shape, it is an object of the present invention to provide a lath for an outer wall ventilation method capable of realizing a long span of the trunk edge, in other words, no use of the auxiliary trunk edge.

As a means for solving the above-mentioned background art, the lath for an outer wall ventilation method according to the invention described in claim 1 is a waterproof paper applied to a lath composed of a strong bone and a wire rod having a diameter smaller than that of the strong bone. A lath for the outer wall ventilation method,
The force bone is composed of a lateral force bone arranged in a lateral direction with a space in the longitudinal direction and a longitudinal force bone arranged in a longitudinal direction with a space in the lateral direction;
The lateral force bone is joined to the waterproof paper;
The longitudinal force bone is joined to the lateral force bone by forming a raised portion between the lateral force bones, and is not joined to waterproof paper,
The wire is composed only of horizontal wires arranged in the horizontal direction with a space in the vertical direction, and is arranged between the lateral force bones and joined to the longitudinal force bones, and is joined to the lateral force bones. Each is characterized by not.

According to a second aspect of the present invention, in the lath for an outer wall ventilation method according to the first aspect, the raised portion is formed in a substantially trapezoidal shape or a mountain shape with a flat middle portion .

The invention described in claim 3 is the outer wall ventilation method for Las according to claim 1 or 2, the height difference of the floating unit is characterized 7~8mm der Rukoto.

According to a fourth aspect of the present invention, in the lath for an outer wall ventilation method according to any one of the first to third aspects, the lateral force bone and the horizontal wire constituting the horizontal member are arranged at a pitch of 15 mm as a whole. and wherein the Tei Rukoto.

The invention described in claim 5 is the lath for outer wall ventilation method according to any one of claims 1 to 4 , wherein the lateral force bone is disposed at a pitch of 30 to 80 mm, and the longitudinal force bone is And 30 to 100 mm in pitch.

The lath for an outer wall ventilation method according to the present invention has the following effects.
(1) The longitudinal force bone has a configuration in which a floating portion is formed between the lateral force bones and joined to the lateral force bone, and is not joined to the waterproof paper. Therefore, considering the direction of the pressing force (out-of-plane load) generated during mortar coating work, the lateral force bone serves as a foundation for firmly supporting the floating part of the longitudinal force bone, and eventually the lateral force bone is Since it bears with certainty, out-of-plane rigidity can be improved.
Specifically, the pressing force applied to the lath surface is mainly borne by the horizontal wire, and from the horizontal wire passes through the floating portion of the longitudinal force bone, and finally the lateral force bone (particularly the foundation of the floating portion). The lateral force bone is effectively absorbed by the lateral force bone, and the out-of-plane rigidity of the outer wall ventilation method lath can be reliably improved.
(2) As a typical example of a conventional product, a comparison is made with the lath shown in FIG.
Compared with this conventional product, the lath for the outer wall ventilation method according to the present embodiment increases the number of strength frames arranged vertically and horizontally per unit area, but there is no vertical wire, so the total weight is almost the same. Nevertheless, the number of vertical bone lifts per unit area is more than doubled, and the lateral force bone is the foundation of the lift, so the arch effect by the vertical bone lift is dramatically increased. improves. In addition, since the number of lateral force bones and longitudinal force bones per unit area also increases, a further increase in out-of-plane rigidity can be expected due to a synergistic effect.
(3) That is, the lath for the outer wall ventilation method according to the present invention increases the number of longitudinal bones per unit area in the longitudinal direction, and more than doubles the number of raised parts, so that However, the out-of-plane rigidity can be improved extremely reasonably . As for the lateral direction, the number of lateral strength bones 1 per unit area is increased, and since it is implemented as a foundation of the raised portion 2a of the longitudinal strength bone 2, it is extremely out of the plane than the conventional product lath. Stiffness can be improved. Therefore, the lath for the outer wall ventilation method according to the present invention can improve the out-of-plane rigidity in a reasonably well balanced manner in the vertical and horizontal directions.
(4) In addition, the lath for the outer wall ventilation method according to the present invention is different from the conventional lath shown in FIG. 9 in that the lateral force bone is disposed on the trunk edge side with respect to the longitudinal force bone. Therefore, it is possible to prevent a decrease in rigidity due to the rotation of the longitudinal bone with respect to the out-of-plane load. According to the experiment and analysis by the present applicant, compared with the configuration in which the longitudinal force bone is disposed on the trunk edge side with respect to the lateral force bone such as the conventional lath shown in FIG. It is known that the out-of-plane rigidity is increased by about 20% at a scale of about 4 mm.
(5) In summary, according to the lath for the outer wall ventilation method according to the present invention, the corrugation process (formation of the raised part) and the arrangement of the wire material are optimal without changing the wire diameter (wire material) and weight almost from the conventional product. By increasing the strength of the mortar layer, the total length of the longitudinal and lateral force bones effectively contributes to the action of reinforcing and stiffening, improving the out-of-plane rigidity in a well-balanced manner, improving the workability of mortar coating work, High strength, high rigidity and high quality mortar outer wall can be constructed.
Specifically, based on the analysis results by the applicant that the arch effect is hardly obtained even if a thin wire having a diameter of about 0.8 mm is arranged on the vertical wire to form an arch shape, As a result of improving the out-of-plane rigidity in a well-balanced manner by arranging the shape and shape, it is possible to realize a long span of the trunk edge, in other words, no use of the auxiliary trunk edge.

A is a front view schematically showing a part (upper left part) of a lath for an outer wall ventilation method according to the first embodiment, and B is a plan view showing a state in which the lath is attached to a ventilation trunk edge. , C are right side views of A. A is an enlarged perspective view showing the outer wall ventilation method lath according to FIG. 1, and B is an elevational view of A as viewed from the side. It is the partial expansion perspective view which showed the variation of the lath for the said outer wall ventilation method. It is the partial expansion perspective view which showed the variation of the lath for the said outer wall ventilation method. It is the partial expansion perspective view which showed the variation of the lath for the said outer wall ventilation method. FIG. 3 is a partially enlarged perspective view showing an outer wall ventilation method lath according to Example 1 as an analysis model used for analysis of out-of-plane displacement (out-of-plane rigidity) (same as FIG. 2A except for a circle mark indicating a stapled portion). ). It is a partial expansion perspective view which shows the lath which concerns on the analysis model used for the analysis of an out-of-plane displacement. It is a partial expansion perspective view which shows the lath which concerns on the analysis model used for the analysis of an out-of-plane displacement. It is a partial expansion perspective view which shows the lath which concerns on the analysis model used for the analysis of an out-of-plane displacement. It is the table | surface which described the numerical value etc. of each said analysis model. It is the table | surface which showed the analysis result of each said analysis model. It is the graph which plotted the relationship of the load-displacement which concerns on each said analysis model. It is the perspective view which showed the outer wall ventilation structure which concerns on a prior art.

  Next, embodiments of the lath for the outer wall ventilation method according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the lath for the outer wall ventilation method according to the present invention is waterproof paper on the lath 4 composed of the skeletons 1 and 2 and the wire 3 having a diameter smaller than the skeletons 1 and 2. 5 is an outer wall ventilation lath 10 that is lined with 5 and has the following structure.
The force bones 1 and 2 are composed of a lateral force bone 1 arranged in a lateral direction with a space in the vertical direction and a longitudinal force bone 2 arranged in a vertical direction with a space in the horizontal direction.
The lateral force bone 1 is joined to the waterproof paper 5.
The longitudinal force bone 2 forms a raised portion 2a between the lateral force bones 1 and 1 and is joined to the lateral force bones 1 and 1 and is not joined to the waterproof paper 5.
The wire 3 is composed only of the horizontal wire 3 arranged in the lateral direction with a space in the vertical direction, and is arranged between the lateral force bones 1 and joined to the longitudinal force bone 2 to obtain a lateral force bone. 1 is not joined.

In short, the lath 10 for the outer wall ventilation method forms a main skeleton of the lath 10 by joining the lateral force bone 1 and the longitudinal force bone 2 devised in the arrangement, shape and the like as described below. A waterproof paper 5 is bonded to the strength bone 1 side, and a wire 3 is bonded to the longitudinal strength bone 2 side.
Hereinafter, components of the outer wall ventilation method lath 10 will be described in detail.

The lateral force bone 1 according to the present embodiment has a wire diameter (φ) of about 1.6 mm and is substantially parallel at a pitch of about 75.5 mm (corresponding to a scale module or a meter module) in the longitudinal direction (X direction in the figure). Is arranged.
The pitch of the lateral force bone 1 is not limited to this, and may be implemented at a pitch of about 50 mm. According to the applicant's experiments and analysis, it has been found that good results can be obtained with a pitch of about 30 to 80 mm.
In addition, although the wire diameter of the lateral force bone 1 is not limited to 1.6 mm, if it exceeds this, it will interfere with the cutting work at the site, and the weight of the lath 10 for the outer wall ventilation method will increase, so about 1.6 mm. Preferred.

On the other hand, the longitudinal force bone 2 according to the present embodiment has a wire diameter (φ) of about 1.6 mm and a pitch of about 45.3 mm in the lateral direction (Y direction in the figure) (corresponding to a scale module or a meter module). They are arranged in parallel.
The pitch of the longitudinal force bone 2 is not limited to this. According to the applicant's experiments and analysis, it has been found that good results can be obtained with a pitch of about 30 to 100 mm.
The wire diameter of the longitudinal force bone 2 is preferably about 1.6 mm for the same reason as the lateral force bone 1.

The longitudinal force bone 2 further forms a raised portion 2a between the lateral force bones 1 and 1 arranged at the pitch, and is joined to the lateral force bones 1 and 1 by joining means such as welding. ing. The raised portion 2a according to this embodiment is formed in a trapezoidal shape with a substantially flat middle portion.
The dimensions of the trapezoid (the raised portion 2a) are, for example, about 45.3 mm on the upper surface (see symbol U in FIG. 2B) and about 75.5 mm on the lower surface (see symbol L) (= pitch of the lateral strength bones 1 and 1). ), And the height (see symbol H) is about 7 to 8 mm including the wire diameter of the longitudinal bone 2. The significance of implementing the height at about 7 to 8 mm is mainly to ensure a good mortar coating thickness.
Further, the inclined portion (V-shaped concave portion) of the trapezoid (the raised portion 2a) is formed by bending (or bending) from both end edges of the flat portion, and the lower end portion of the inclined portion and the lateral strength bone 1 The contact portion with the top portion is joined by joining means such as welding.
The shape of the trapezoid is appropriately changed in design according to the pitch of the lateral force bone 1.

  That is, in the lath 10 for outer wall ventilation method, a plurality of isomorphic and laterally-stressed lateral force bones 1 arranged at equal intervals and a plurality of isomorphic and equal-sized longitudinal force bones 2 arranged at equal intervals are substantially perpendicular to each other. The main skeleton is formed by joining the lower end portions of the inclined portions of the raised portions 2a continuously formed on the intersections, that is, the longitudinal force bones 2 and the lateral force bones 1 arranged in a lattice shape. Incidentally, in the present embodiment, they are joined by spot welding having high rigidity.

The waterproof paper 5 to be joined to the lateral force bone 1 is a general-purpose product (tarpaulin paper, moisture-permeable waterproof paper, etc.), which is not shown in the drawings, but for example, by a staple that is launched by a stapler or a similar tool, or It is implemented by a configuration in which the lateral force bone 1 is fastened and integrated with an adhesive or the like. Note that the waterproof paper 5 and the longitudinal force bone 2 are not joined (see FIG. 2B).
As shown in FIG. 1A, the waterproof paper 5 is implemented in a configuration in which the waterproof paper 5 is bonded together in a positional relationship slightly shifted upward and leftward from the center of the lath 4. However, the waterproof paper 5 may be disposed in any direction from the center of the lath 4.

Next, the wire rod 3 according to the first embodiment is composed of only the horizontal wire rods 3 arranged in the horizontal direction with a gap in the vertical direction (X direction in the drawing). They are arranged in a balanced manner, and are performed by joining the intersections with the longitudinal force bone 2 by spot welding or the like.
Specifically, the wire 3 is implemented with a wire diameter (φ) of about 0.8 mm, and between the lateral force bones 1 and 1 arranged at equal intervals (about 75.5 mm) in the longitudinal direction, Four pieces are arranged in parallel at a pitch of about 15.1 mm corresponding to 1/5. As shown in FIG. 2B, two of the four arrangements are provided at both end edges (both sides) of the flat portion of the raised portion 2a, and two in good balance are provided therebetween. That is, the lateral force bone 2 and the horizontal wire 3 constituting the horizontal material of the lath 10 for the outer wall ventilation method are arranged regularly at a pitch of about 15.1 mm in which the lateral force bones 2 are arranged every four. ing. This arrangement can be said to be a rational and effective arrangement for increasing the out-of-plane rigidity.
The pitch of the horizontal wire 3 is not limited to this, but may be any distance corresponding to the scale module and the meter module. However, the size (density) of the mesh (lattice) formed by the lath 4 and thus mortar coating In consideration of workability, about 15.1 mm is preferable. Further, the wire diameter is not limited to about 0.8 mm, and it has been found that good results can be obtained with a thin wire material of about 0.6 to 1.0 mm.

  In short, as shown in FIG. 1A, the lath 10 for the outer wall ventilation method according to the present embodiment is a horizontal material (lateral force bone 1 and horizontal wire 3) arranged regularly at a pitch of about 15.1 mm. The vertical longitudinal bones 2 having the laterally trapezoidal raised portions 2a (see FIG. 1B) as viewed from the side in the horizontal direction are arranged at a pitch of about 45.3 mm in the horizontal direction. This is implemented by a structure in which the waterproof paper 5 is bonded to the lath 4 joined by spot welding with the lateral force bone 1 constituting the lath 4 and stapled or the like in a positional relationship slightly shifted upward to the left. ing.

According to the lath 10 for the outer wall ventilation method having the above-described configuration, the following effects can be obtained.
(1) The longitudinal force bone 2 is joined to the lateral force bones 1, 1 by forming a raised portion 2 a between the lateral force bones 1, 1, and is not joined to the waterproof paper 5.
Therefore, according to this configuration, when the out-of-plane load, that is, the direction of the pressing force (stress) generated during the mortar coating operation is taken into consideration, the lateral force bone 1 firmly supports the floating portion 2a of the longitudinal force bone 2 ( Foundation), and the lateral force bone 1 surely bears the out-of-plane load eventually, so that the out-of-plane rigidity can be improved.
Specifically, the pressing force (out-of-plane load) applied to the lath 4 surface is mainly borne by the horizontal wire 3 and passes from the horizontal wire 3 through the lifted portion 2a of the longitudinal force bone 2, and finally the lifted portion. Since it is transferred to the lateral force bone 1 (especially the lateral force bone 1 fastened to the studs with staples etc.) as the foundation of 2a and the lateral force bone 1 effectively absorbs the pressing force, the outer wall ventilation method is used. The out-of-plane rigidity of the lath 10 can be reliably improved.
(2) As a typical example of a conventional product, a comparison is made with the lath shown in FIG. Incidentally, the size of the mesh (lattice) is about 15.1 × 15.1 mm.
Compared with this conventional product, the lath 10 for outer wall ventilation method according to the present embodiment increases the number of strength frames 1 and 2 per unit area, but there is no vertical wire, so the total weight is almost the same. does not change.
Still, since the number of the lifted portions 2a of the longitudinal force bone 2 per unit area is doubled and the lateral force bone 1 is the base of the lifted portion 2a, it depends on the lifted portion 2a of the longitudinal force bone 2 The arch effect is dramatically improved. In addition, since the number of lateral force bones 1 and longitudinal force bones 2 per unit area also increases, a further increase in out-of-plane rigidity can be expected due to a synergistic effect. According to the experiment and analysis by the present applicant, it is known that the arch effect of the vertical wire material thinner than the ribs can hardly be expected, so that the arch effect cannot be expected and the weight of the vertical wire material is omitted. The lath's out-of-plane rigidity can be extremely reasonably increased.
On the other hand, the conventional lath shown in FIG. 9 is provided so that the lateral force bone 1 'is attached to the upper side of the raised portion 2a' of the longitudinal force bone 2 '. It cannot be the foundation of 2a ', and almost no arch effect can be expected. Therefore, in the sense of increasing the out-of-plane rigidity, there is a large gap from the outer wall ventilation method lath 10 according to the present invention.
(3) That is, the lath 10 for the outer wall ventilation method according to the present invention increases the number of longitudinal force bones 2 per unit area in the longitudinal direction, and also doubles the number of raised portions 2a. The out-of-plane rigidity can be improved extremely rationally than the product. As for the lateral direction, the number of lateral strength bones 1 per unit area is increased, and since it is implemented as a foundation of the raised portion 2a of the longitudinal strength bone 2, it is extremely out of the plane than the conventional product lath. Stiffness can be improved. Therefore, the lath 10 for the outer wall ventilation method according to the present invention can improve the out-of-plane rigidity in a reasonably well balanced manner in the vertical and horizontal directions.
(4) In addition, the outer wall ventilation method lath 10 according to the present invention is different from the conventional product lath shown in FIG. 9 in that the lateral force bone 1 is disposed on the trunk edge side with respect to the longitudinal force bone 2. Therefore, it is possible to prevent a decrease in rigidity due to the rotation of the longitudinal bone 2 with respect to the out-of-plane load. According to the experiment and analysis by the present applicant, compared with the configuration in which the longitudinal force bone is arranged on the trunk edge side with respect to the lateral force bone like the conventional lath shown in FIG. It is known that the out-of-plane rigidity is increased by about 20% at a scale of about 4 mm.

The outer wall ventilation structure constructed using the outer wall ventilation method lath 10 having the above-described configuration is generally implemented by the following steps.
First of all, construction is proceeded in accordance with the procedure of building the pillars and studs that make up the building frame and constructing the wall insulation. And a base material is attached to the outer surface of the said pillar and a stud.
Next, the ventilator edge 11 (see FIG. 1B) is fastened to the base material (not shown) so as to correspond to the spacing between the studs (about 455 mm). As described above, the lath 10 for the outer wall ventilation method has a large out-of-plane rigidity, and a long span of the trunk edge can be expected sufficiently. Therefore, the auxiliary trunk edge 12 is not used.
Next, the lath 10 for the outer wall ventilation method is abutted so that the vertical strength bone 2 follows the center line (ruled line) of the ventilation trunk edge 11 while maintaining the vertical posture in which the lateral strength bone 2 is in the horizontal horizontal direction. is allowed aligns with, the intersections between the vertical force bone 2 and the lateral force the bone 1, successively fixed to be stretched mounting the lath 10 to the ventilation furring strips 11 than the fixed again and again such as stapling. The fixed again and again by fixing work, depending on the structural design, may be performed on all the intersections may be performed one or more intervals.
This tensioning operation is performed over the entire range necessary for the subsequent mortar coating operation, and in particular, the addition processing between the adjacent laths 10 for the outer wall ventilation method is sequentially performed so as not to cause a break (gap) of the lath 4. Repeat.
After finishing the lath 10 tensioning work, mortar coating work is performed on the surface side of the lath 10 stretched on the ventilator rim 11 with good workability to construct a mortar outer wall with high strength, high rigidity and high quality. can do. In the central part of the mortar layer thickness (about 15 mm), the raised portion 2a of the longitudinal force bone 2 is arranged. Thus, a gap between the lath 10 whose back surface is blocked by the waterproof paper 5 and the base material is formed as a ventilation layer.

  FIG. 3 shows different embodiments of the lath for the outer wall ventilation method according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  In the outer wall ventilation method lath according to the second embodiment, the lateral strength bones 1 are disposed at a pitch of about 60.4 mm, and the longitudinal strength bones 2 are disposed at a pitch of about 68 mm, as compared to the first embodiment. The main difference is that three horizontal wires 3 are arranged between the lateral force bones 1, 1. On the other hand, the fact that there is no vertical wire, the horizontal members (lateral force bone 1 and horizontal wire 3) are arranged at a pitch of 15.1 mm, and the like are the same.

In short, this lath for the outer wall ventilation method is also characterized by the following configuration, as in the first embodiment.
The force bones 1 and 2 are composed of a lateral force bone 1 arranged in a lateral direction with a space in the vertical direction and a longitudinal force bone 2 arranged in a vertical direction with a space in the horizontal direction.
The lateral force bone 1 is joined to the waterproof paper 5.
The longitudinal force bone 2 forms a raised portion 2a between the lateral force bones 1 and 1 and is joined to the lateral force bones 1 and 1 and is not joined to the waterproof paper 5.
The wire 3 is joined to the longitudinal force bone 2 and is not joined to the lateral force bone 1.

The lateral force bone 1 according to the present embodiment is implemented at a pitch of about 60.4 mm. However, as described above, the lateral force bone 1 is within the range of a pitch of about 30 to 80 mm, so that good results are obtained. There is no change.
On the other hand, the longitudinal force bone 2 according to the present embodiment is implemented at a pitch of about 68 mm. However, as described above, the longitudinal force bone 2 is within the range of a pitch of about 30 to 100 mm. There is no change.

The dimensions of the raised portion 2a formed on the longitudinal force bone 2 (almost trapezoid with a flat central portion) are about 30.2 mm on the upper surface and about 60.4 mm on the lower surface (= pitch of the lateral force bones 1 and 1). The height is about 7 to 8 mm including the wire diameter of the longitudinal force bone 2.
Further, the inclined portion (V-shaped concave portion) of the trapezoid (the raised portion 2a) is formed by bending (or bending) from both end edges of the flat portion, and the lower end portion of the inclined portion and the lateral strength bone 1 The contact portion with the top portion is joined by joining means such as welding.

  In short, the lath for the outer wall ventilation method according to the second embodiment also has the horizontal members (lateral force bone 1 and horizontal wire 3) arranged regularly at a pitch of about 15.1 mm in the same manner as in the first embodiment. A lath formed by vertical vertical strength bones 2 having horizontal trapezoidal raised portions 2a as viewed from the side, arranged at equal intervals in the horizontal direction, and joined at the intersections by spot welding. 4, the waterproof paper 5 is bonded and integrated with the lateral force bone 1 constituting the lath 4 with a stapler or the like in a positional relationship slightly shifted upward to the left.

Therefore, according to the lath for the outer wall ventilation method according to the second embodiment, the longitudinal force bone 2 is lifted between the lateral force bones 1 and 1 like the lath 10 according to the first embodiment. And is joined to the lateral force bones 1 and 1 and not joined to the waterproof paper 5, so that the out-of-plane rigidity can be reliably improved (specifically, (1) in the paragraph [0028] above). reference).
Compared with the conventional product lath shown in FIG. 9, the number of the strength frames 1 and 2 arranged vertically and horizontally per unit area is increased, but since there is no vertical wire, the total weight is hardly changed. Nevertheless, since the number of the lifted portions 2a of the longitudinal force bone 2 per unit area is tripled and the lateral force bone 1 is the base of the lifted portion 2a, the arch by the lifted portion 2a of the longitudinal force bone 2 is provided. The out-of-plane rigidity of the lath can be increased extremely rationally, such as a dramatic improvement in the effect (for details, see paragraphs [0028] (2) and (3) above).
Further, since the lateral force bone 1 is arranged on the torso side with respect to the longitudinal force bone 2, it is possible to prevent a decrease in rigidity due to the rotation of the longitudinal force bone 2 with respect to the out-of-plane load (details). (Refer to paragraph [0028] (4)).
Accordingly, the lath for the outer wall ventilation method according to the second embodiment also has a large out-of-plane rigidity and can be expected to have a long span of the trunk edge. Therefore, the mortar coating operation is performed with good workability without using the auxiliary trunk edge 12. It is possible to construct a mortar outer wall with high strength, high rigidity and high quality.

  FIG. 4 shows different embodiments of the lath for outer wall ventilation method according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  In the lath for the outer wall ventilation method according to the third embodiment, as compared with the first embodiment, the lateral force bones 1 are arranged at a pitch of about 30.2 mm, and the horizontal wire 3 is interposed between the lateral force bones 1 and 1. The main difference is that they are arranged one by one, and the raised portions 2a of the longitudinal bone 2 are formed in a mountain shape. On the other hand, the fact that there is no vertical wire, the pitch of the longitudinal force bone 2, the horizontal materials (the lateral force bone 1 and the horizontal wire 3) are arranged at a pitch of 15.1 mm, etc. are the same.

In short, this lath for the outer wall ventilation method is also characterized by the following configuration, as in the first embodiment.
The force bones 1 and 2 are composed of a lateral force bone 1 arranged in a lateral direction with a space in the vertical direction and a longitudinal force bone 2 arranged in a vertical direction with a space in the horizontal direction.
The lateral force bone 1 is joined to the waterproof paper 5.
The longitudinal force bone 2 forms a raised portion 2a between the lateral force bones 1 and 1 and is joined to the lateral force bones 1 and 1 and is not joined to the waterproof paper 5.
The wire 3 is joined to the longitudinal force bone 2 and is not joined to the lateral force bone 1.

The lateral force bone 1 according to the present embodiment is implemented at a pitch of about 30.2 mm. However, as described above, the lateral force bone 1 is within a range of a pitch of about 30 to 80 mm, so that good results are obtained. That is no different.
On the other hand, the longitudinal force bone 2 according to the present embodiment is implemented at a pitch of about 45.3 mm, as in the first embodiment, and as described above, it is within the range of a pitch of about 30 to 100 mm. So there is no change in obtaining good results.

The mountain-shaped floating portion 2a formed on the longitudinal force bone 2 has a bottom surface of 30.3 (= pitch of lateral force bones 1 and 1) and a height of about 7 to 8 mm including the diameter of the longitudinal force bone 2 The isosceles triangle shape is implemented.
In addition, the abutting portion between the lower end portion of the inclined portion (V-shaped concave portion) of the isosceles triangle shape (the floating portion 2a) and the lateral force bone 1 (the zenith portion thereof) is joined by a joining means such as welding.

  In short, the lath for the outer wall ventilation method according to the third embodiment is also provided with horizontal members (lateral force bones 1 and horizontal wire members 3) arranged regularly at a pitch of about 15.1 mm as in the first embodiment. A lath formed by vertical vertical strength bones 2 having horizontal mountain-shaped raised portions 2a as viewed from the side, arranged at equal intervals in the horizontal direction, and joined at the intersections by spot welding in a horizontal orientation. 4, the waterproof paper 5 is bonded and integrated with the lateral force bone 1 constituting the lath 4 with a stapler or the like in a positional relationship slightly shifted upward to the left.

Therefore, according to the lath for the outer wall ventilation method according to the third embodiment, the longitudinal force bone 2 is lifted between the lateral force bones 1 and 1 like the lath 10 according to the first embodiment. And is joined to the lateral force bones 1 and 1 and not joined to the waterproof paper 5, so that the out-of-plane rigidity can be reliably improved (specifically, (1) in the paragraph [0028] above). reference).
In addition, compared with the conventional product lath shown in FIG. 9, the number of the strength frames 1, 2 arranged vertically and horizontally per unit area is increased, but there is no vertical wire, and the number of horizontal wires 3 is greatly reduced. The total weight does not increase much. Nevertheless, since the number of the lifted portions 2a of the longitudinal force bone 2 per unit area is increased five times and the lateral force bone 1 is a base of the lifted portion 2a, the arch by the lifted portion 2a of the longitudinal force bone 2 is provided. The out-of-plane rigidity of the lath can be increased extremely rationally, such as a dramatic improvement in the effect (for details, see paragraphs [0028] (2) and (3) above).
Further, since the lateral force bone 1 is arranged on the torso side with respect to the longitudinal force bone 2, it is possible to prevent a decrease in rigidity due to the rotation of the longitudinal force bone 2 with respect to the out-of-plane load (details). (Refer to paragraph [0028] (4)).
Therefore, the lath for the outer wall ventilation method according to the third embodiment also has a large out-of-plane rigidity and can be expected to have a long span of the trunk edge, so that the mortar coating operation is performed with good workability without using the auxiliary trunk edge 12. It is possible to construct a mortar outer wall with high strength, high rigidity and high quality.
<Reference example>

FIG. 5 shows a reference example of a lath for an outer wall ventilation method according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

The lath for the outer wall ventilation method according to this reference example is mainly composed of an expanded metal 6 made of a wire having a diameter smaller than that of the strength frames 1 and 2 instead of the horizontal wire 3 as compared with the first embodiment. Is different. On the other hand, the absence of the vertical wire, the pitch of the lateral force bone 1, the pitch of the longitudinal force bone 2, the shape of the raised portion 2a, and the like are the same.

In short, this lath for the outer wall ventilation method is also characterized by the following configuration, as in the first embodiment.
The force bones 1 and 2 are composed of a lateral force bone 1 arranged in a lateral direction with a space in the vertical direction and a longitudinal force bone 2 arranged in a vertical direction with a space in the horizontal direction.
The lateral force bone 1 is joined to the waterproof paper 5.
The longitudinal force bone 2 forms a raised portion 2a between the lateral force bones 1 and 1 and is joined to the lateral force bones 1 and 1 and is not joined to the waterproof paper 5.
The wire (expanded metal 6) is joined to the longitudinal force bone 2 by spot welding at the intersection and is not joined to the lateral force bone 1.

Therefore, according to the lath for the outer wall ventilation method according to this reference example , the longitudinal force bone 2 has the raised portion 2a between the lateral force bones 1 and 1 like the lath 10 according to the first embodiment. Since it is formed and joined to the lateral force bones 1 and 1 and not joined to the waterproof paper 5, the out-of-plane rigidity can be reliably improved (for details, see (1) in paragraph [0028] above). ).
In addition, compared with the conventional lath shown in FIG. 9, the number of the strength frames 1 and 2 arranged vertically and horizontally per unit area is increased, and the weight of the expanded metal lath 6 itself is increased, but there is no vertical wire or horizontal wire 3 at all. So the total weight will not increase much. Nevertheless, since the number of the lifted portions 2a of the longitudinal force bone 2 per unit area is doubled and the lateral force bone 1 is the foundation of the lifted portion 2a, the arch by the lifted portion 2 of the longitudinal force bone 2 is provided. The out-of-plane rigidity of the lath can be increased extremely rationally, such as a dramatic improvement in the effect (for details, see paragraphs [0028] (2) and (3) above).
Further, since the lateral force bone 1 is arranged on the torso side with respect to the longitudinal force bone 2, it is possible to prevent a decrease in rigidity due to the rotation of the longitudinal force bone 2 with respect to the out-of-plane load (details). (Refer to paragraph [0028] (4)).
Therefore, the lath for the outer wall ventilation method according to this reference example also has a large out-of-plane rigidity and can be expected to have a long span of the trunk edge. Therefore, the mortar coating work should be performed with good workability without using the auxiliary trunk edge 12. It is possible to construct a mortar outer wall with high strength, high rigidity and high quality.
In addition, it can implement similarly even if it uses a wire mesh instead of the said expanded metal lath 6, and can exhibit the same effect.

In order to confirm the effect (improvement) on the out-of-plane rigidity of the lath for an outer wall ventilation method according to the present invention described in Examples 1 to 3 , the lath 10 for outer wall ventilation method according to the above Example 1 is taken as an example below. explain.

<Confirmation of the effect of out-of-plane rigidity of the lath 10 for outer wall ventilation method according to Example 1>
The present applicant analyzed the out-of-plane rigidity of the outer wall ventilation method lath 10 according to Example 1 using analysis software. In addition, we analyzed the out-of-plane rigidity of other laths such as conventional products and examined the difference.
(Analysis overview)
-Analysis software to be used FEM solver: Marc2012
Pre-post processor: Mentat 2012
・ Type of analysis Three-dimensional stress analysis as a large deformation problem considering geometric nonlinearity

(Analysis model)
A list of analysis models is shown in FIG.
The basic conditions in the analysis model are shown below.
-The modeling range is 755 mm x 1359 mm.
・ The height by corrugation of the lath shall be 7 mm including the wire diameter.
・ The interval between the cylinder edges is set to 453 mm, and the same is applied to the staple interval in the horizontal direction.
A wire is modeled using a three-dimensional solid cross-section beam element (element number 52) that does not consider the transverse shear force.
-Of the nodes where the beams intersect, the parts that are actually welded are connected by a rigid link (RBE2).
(Supplementary explanation of the analysis model according to FIG. 10)
In short, in order to properly evaluate the out-of-plane rigidity of the lath (FIGS. 6 to 9) according to each analysis model, the wire diameters of the strength frames 1 and 2 to be used, the wire diameter of the wire rod 3, the arrangement pitch, and the staple fastening The attachment sites were matched as much as possible.
In addition, model No. concerning the lath 10 for the outer wall ventilation method according to the present invention. 4 (No. 1) in FIG. 5 is different from FIG. 6 (No. 2) based on the number of staple fixing portions. The former is a case with two upper and lower positions, and the latter is an upper, middle and lower three position.

(Material property)
The material is assumed to be an elastoplastic material of steel, the yield point is 235 N / mm ² , the Young's modulus (E) is 205000 N / mm ² , the Poisson's ratio is 0.3, and the secondary stiffness after yield is 2050 N / mm ² ( E / 100).
(boundary condition)
The illustration of the boundary condition analysis model is omitted because it does not appear clear on the application drawing.
・ Restraining conditions: Staple fastening sites (see circles in the figure) are pin-supported (displacement fixed and free to rotate). The part on the ventilator edge where the staple is not fastened is fixed in the Z direction (out-of-plane direction).
Load condition: The span (1359 mm) is equally divided into three spans (453 mm each), and the entire load in the out-of-plane direction is given on the central vertical line of the central span portion (453 mm). If there is a difference in level in the lath due to corrugation, apply the load only on the tallest line. The magnitude of the load is 186 N / mm ² at the maximum. This is a weight equivalent to 9 mm mortar.

(Out-of-plane stiffness evaluation method and analysis results)
The out-of-plane rigidity of each lath is evaluated by the central vertical line of the central span portion (453 mm), that is, the central average out-of-plane displacement (out-of-plane displacement average value) of the vertical line located at the center of the entire lath.
FIG. 11 shows the result of the center average out-of-plane displacement (mm) of each analysis model.
FIG. 12 is a graph plotting the load-displacement relationship of each analysis model. Reference numerals 1 to 5 in the graph indicate model numbers of FIGS. It corresponds to.

(Discussion)
When the analysis results of the laths of the model 9 and the model 8 are compared, it can be seen from FIG. 11 and FIG. 12 that the model 8 has higher out-of-plane rigidity. It is determined that this is because the number of strength bones is larger in the model of FIG. 8 (one lateral force bone 1 and two longitudinal force bones 2). Moreover, it is judged that the vertical wire 3 hardly contributes to the improvement of the out-of-plane rigidity even if the number of the vertical wires 3 is large.
Comparing the analysis results of the laths of the FIG. 8 model and the FIG. 7 model, it can be seen that the FIG. 7 model has higher out-of-plane rigidity, as is apparent from FIG. 11 and FIG. This is determined to be due to the fact that the arch effect due to the corrugation (lifting portion) of the longitudinal force bone 2 was exhibited because the arrangement and quantity of the strength frames 1 and 2 and the horizontal wire 3 were the same. Note that the lath of the model in FIG. 7 is newly assumed by the applicant for this analysis, and is not a commercial product.
When the analysis results of the laths of the FIG. 7 model and the FIG. 6 model (part 1) are compared, it is understood from FIG. 11 and FIG. 12 that the out-of-plane rigidity is higher in the FIG. 6 model (part 1). . This is because the arrangement and quantity of the strength frames 1 and 2 and the horizontal wire 3 are the same, so that a large arch effect was exhibited by the amount that the number of corrugation (lifting part) of the longitudinal force bone 2 was doubled. Judged to be.
When the analysis results of the laths of the model (part 1) and the model (2) are compared, it is clear from FIG. 11 and FIG. 12 that the model (part 2) has higher out-of-plane rigidity. I understand. It is determined that the out-of-plane rigidity increases as the staple fastening quantity increases.

(Summary)
The lath of the model of FIG. 6 according to the present invention (the lath 10 for the outer wall ventilation method according to the present invention) has a weight per unit area (g / m ² ) as compared with other laths (see FIGS. 7 to 9). It is convinced that the out-of-plane rigidity can be extremely rationally improved by substantially exhibiting the arch effect of the raised portion 2a formed mainly on the longitudinal force bone 2 with almost no change (see FIG. 10).

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.
For example, the shape of the raised portion 2a formed on the longitudinal force bone 2 is not limited to a substantially trapezoidal shape or a mountain shape with a flat middle portion, and can be similarly implemented in an arc shape and can exhibit the same effects. it can.

DESCRIPTION OF SYMBOLS 1 Lateral strength bone 2 Longitudinal strength bone 2a Floating part 3 Horizontal wire 4 Lath 5 Waterproof paper 6 Expanded metal lath 10 Lath for outer wall ventilation method 11 Venting trunk edge 12 Auxiliary trunk edge

Claims (5)

A lath for the outer wall ventilation method, which is formed by lining a waterproof paper to a lath composed of a strong bone and a wire rod having a diameter smaller than that of the strong bone,
The force bone is composed of a lateral force bone arranged in a lateral direction with a space in the longitudinal direction and a longitudinal force bone arranged in a longitudinal direction with a space in the lateral direction;
The lateral force bone is joined to the waterproof paper;
The longitudinal force bone is joined to the lateral force bone by forming a raised portion between the lateral force bones, and is not joined to waterproof paper,
The wire is composed only of horizontal wires arranged in the horizontal direction with a space in the vertical direction, and is arranged between the lateral force bones and joined to the longitudinal force bones, and is joined to the lateral force bones. The lath for the outer wall ventilation method, characterized by the fact that they are not. The lath for an outer wall ventilation method according to claim 1, wherein the raised portion is formed in a substantially trapezoidal shape or a mountain shape in which an intermediate portion is flat. The lath for an outer wall ventilation method according to claim 1 or 2, wherein a difference in height of the raised portion is 7 to 8 mm . The lath for an outer wall ventilation method according to any one of claims 1 to 3, wherein the horizontal force bone and the horizontal wire constituting the horizontal member are arranged at a pitch of 15 mm as a whole. The lateral force bone, 30 to 80 mm are arranged at a pitch of, the longitudinal force bone is characterized by being arranged at a pitch of 30 to 100 mm, according to claim 1-4 either single The lath for the outer wall ventilation method described in 1.

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