JPS603885Y2 - mortar base plate - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mortar base plate (hereinafter simply referred to as base plate) suitable for attaching a hydraulic inorganic wall material such as a mortar wall material to a rigid substrate.

Furthermore, in detail, it significantly strengthens the adhesion between the wall material and the substrate physically, greatly reduces cracks and peeling caused by shrinkage of the wall material when drying, and improves heat insulation and workability. Pertains to base plates with improved waterproofness, etc.

Conventionally, three typical structures have been known as base structures for forming, for example, cement mortar walls.

In other words, ■ is a structure consisting of lumber board - waterproof paper - lath material, ■ is a structure in which cement mortar material is integrally formed on plywood, as shown in Patent No. 941718, for example, and ◎ is a heat-insulating structure. This is the structure shown in Japanese Patent Application Laid-open No. 54-68019, in which the lumber and lath material are integrated.

However, with the structure shown in ■, the process is complicated and the work efficiency is low.
Moreover, it requires skill and has problems with insulation, cracking, and peeling.

In addition, in the structure (■), the workability was greatly improved, but it lacked heat insulation and weight reduction, and there were defects in crack prevention, joints, etc.

Furthermore, in the ◎ structure, the insulation properties were greatly improved, but the biggest weakness was the fixed structure of the lath material and the insulation material, and no improvements were made to the joints between the boards.

In order to eliminate such drawbacks, the present invention cuts and bends a part of the rigid hard substrate itself to form a locking piece.
In addition, the lath sheet material is welded and integrated to achieve stronger integration of mortar wall materials, plaster, calcium carbonate, calcium silicate materials, etc. and the base material, suppressing cracks in the wall material, and improving workability and heat insulation of the base material. We provide base plates that are lightweight.

An embodiment of the base plate according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an example of the above-mentioned base plate, in which 1 is a thin metal plate formed from a surface material and shaped into a concave cross section from the bottom part 2 and side wall 3, and the lower end of the side wall has the following markings. A large number of locking pieces 3 are formed on the surface 2a of the bottom part 2 to integrate with the mortar wall material, and a part of the bottom part 2 itself is cut off. It is folded and provided.

Reference numeral 5 denotes a male connecting portion having an insertion edge 6 projecting outward from the edge of one side wall.

Reference numeral 7 denotes a female connecting portion which bends the edge of the other side wall inwardly and projects outward again to form a substantially U-shaped insertion groove 8 and an extension portion 10 extending its lower edge 9 outward. It is formed in one piece.

In particular, the locking piece 3 is made by cutting and bending a part of the substrate 1 itself to protrude upward from the surface 2a, and its cross-sectional shape is formed, for example, as shown in FIGS. 2a-f.

In other words, figure a shows a curved shape that widens at the end (the whole slope is θ from the base to the tip), and figure b shows the locking piece 3 protruding perpendicularly to the panel surface, and only the tip 3a is bent to form a roughly hook shape. It was formed.

Also, figure C is the same as figure b, but with the tip 3a bent horizontally to the panel surface 2, figure d shows the locking piece 3 tilted linearly, figure e shows the locking piece 3 shown in figure d. tip 3a of
Figure f shows the locking piece 3 bent at an angle θ1, and the locking piece 3 is tapered.

The height H of this locking piece 3 is arbitrarily set depending on the thickness of the hydraulic inorganic wall, but for example, if the wall is 20rrrm thick, it is about 5wrL or more to about 15 wrL, and the diameter of the hole is arbitrary. .

Furthermore, the plan view shape of the locking piece is, for example, as shown in FIGS.
As shown in the figure, there are various types of crown-like shapes, such as one-piece, three-piece, or multi-piece crown-like ones, depending on the purpose.

The locking piece 3 can be formed by using a general press, a notch press, or a burring process to exceed its limit and causing cracks at the periphery of the burring part.

Of course, in order to make the locking piece into a complicated shape, the locking piece may be bent, punched, etc. before it is projected.

To explain further, in Fig. 3, figure a shows a case where three rectangular locking pieces 3 are formed as shown in a', and figures b-d show a case where triangular locking pieces 3 are formed on the periphery of a circle as shown in b'. This is a case in which four pieces or a plurality of pieces (not shown) are formed as shown in FIG.

Of course, when burring is performed using a polygonal punch, the locking piece will be formed accordingly.

Further, Fig. 3f shows a case where the locking piece 3 is formed by dividing the periphery of the ellipse into a large number of pieces, and Fig. 3g shows a case where the locking piece 3 is formed by a rectangular locking piece 3.
Fig. h and i are cases in which the periphery of a square is formed into four locking pieces 3, and Fig. j is a case in which the periphery of a triangle is formed into three pieces.

Furthermore, the distribution of this type of locking piece 3 is arranged as shown in FIG. 4a"d.

That is, diagram a is a random distribution, diagrams b and c are regular distributions, diagram b is a staggered distribution, and diagram C is a distribution of the base.

Of course, the distribution is not limited to this, but the shapes can be rhombic, polygonal, circular, etc., and the locking pieces 3 can be arranged in two (as shown in Figure 4 d) or three in a row, or with narrow intervals. It is also possible to arrange them.

Note that in forming the base plate, a regular distribution is convenient for the subsequent manufacturing process.

The optimal material for the substrate 1 provided with such a locking piece is a metal ν plate or a synthetic resin plate. For example, a surface-treated steel plate (
Galvanized iron plate, colored iron plate...), stainless steel plate, Ribrass plate, steel plate, etc., and the plate thickness is 3.2rr due to molding.
Vn or less is preferable.

Reference numeral 11 denotes a suppression layer, as shown in enlarged view in FIG. This prevents the heat insulating material from leaking onto the protruding surface.

That is, in Figure a, the hot melt adhesive 11a is
The structure is such that at least a portion of the void 3b is closed by applying a coating of 20 microns, and Figure b shows the void 3 being filled with particles 11b of pearlite particles, styrene beads, and other artificial aggregates.
A structure that obstructs at least a portion of b, diagram C is a net-like object,
This is a structure in which a nonwoven fabric 11c or the like is laid entirely on the bottom part 2 to suppress leakage of the heat insulating material raw material.

'Also, figure d shows a structure similar to that of figure b, or a structure in which an effect similar to this can be obtained by scattering the fibers 12.

13 is a heat insulating layer made of a foamable synthetic resin raw material such as polyurethane foam, polyisocyanurate foam, phenol foam, styrene foam, etc., which can integrate constituent materials by utilizing self-adhesive properties during foaming. .

In addition, this type of foam has excellent water resistance, alkali resistance, heat insulation, and elasticity (cushioning properties), and because it has a closed cell foam structure (closed cell ratio of approximately 30% or more), it does not absorb water and is chemically reactive. Because it is a stable material, it does not absorb moisture and does not corrode.

The heat insulating layer 13 may be formed in various shapes, for example as shown in FIG. 6 Hxg.

Note that illustration of the locking piece 3 is omitted. In other words, Figure a shows the case where the heat insulating layer 13 is integrally provided on the lower edge and concave part of the female connecting part, and Figures b to d show the case where a part of the heat insulating layer protrudes downward from the male and female connecting parts. , e shows a case where a part of the heat insulating layer is also formed on the lower surface of the insertion edge of the male connector.

Further, in FIG.
3 is a case in which the entire surface of the concave bottom surface 2 and the male and female connecting portions protrude downward as a whole.

Furthermore, FIG. 6g shows both edges 2c of the surface 2a of the bottom part 2.
is protruded, and a part of the heat insulating layer 13 is formed also in this part, in order to strengthen the mechanical strength of the joint part when forming a wall structure.

14 is a waterproof sheet, which is a relatively strong sheet-like material, such as asphalt felt, kraft paper, synthetic resin sheet, asbestos paper, metal foil, a laminate of one or more of these, or a sheet-like material that has been subjected to waterproof treatment. .

Preferably, the lower edge 6a of the insertion edge 6 and the lower edge 9 of the insertion groove 8 are stretched and fixed.

This is because in a composite structure, the strength of the substrate 1 and the waterproof sheet 14 is more closely related to the section modulus than the strength of the core material, a so-called heat insulating layer.

A metal lath sheet 15 is fixed to the surface 2a as shown in FIGS. 7a and 7b.

That is, in Figure A, the portion of the locking piece 3 is formed into a mountain shape, the valley portion is in contact with the surface 2a, and this portion 15a is integrated by spot welding or the like.

The lath sheet may be ribbed or flat lath, and a lath material with a slightly mesh roughness is preferable.

Further, in Fig. b, the tip of the locking piece 3 is used as a surface to which the lath sheet is fixed, thereby increasing the reinforcing effect.

What has been described above is only one embodiment of the base plate according to the present invention, and the protrusion 10a may be provided in the longitudinal direction in the middle of the extension portion 10, or the tongue pieces 6b, 10b may be formed as shown in the figure. , in the synthetic resin foam layer, approximately 10 to 10 parts of pearlite particles, zeolite, borax, styrene beads, or one or more fibers are added to 10 parts of the raw material for fire resistance, compression resistance, sound absorption, etc. It can also be added.

Further, as shown by the dashed line in FIG. 1, a waterproof sheet may be provided over the entire lower edge of the male connector, or a waterproof sheet may be provided that protrudes outward from this, although not shown.

Furthermore, it is also possible to use a base plate from which the suppression layer 11 is removed by selecting a manufacturing method.

Further, the surface 2a may be formed to have an uneven surface, or the edge of the side wall 4 may have a laying structure other than a connecting structure.

Next, we investigated the performance of this base plate and found the following.

As the substrate 1, an embossed colored iron plate with a thickness of 0.3 mm is formed into the shape shown in Fig. 6C (density 30k).
The polyurethane foam 13 (g/rrr) was filled with an in-situ foaming method, and the asphalt felt 15 was integrally adhered to the base plate.

Also, in Figure 6C, 11 = 298mm, 1° = 3
021717+! , 13=31mm, L=18mm
, 1'=17mm, t1=13mm, t2=12wIt
The joint width is 5rIIIn1 and the height of the locking piece 3 is H=
15mm, diameter 1oTIr! It is assumed that the distribution is as shown in Figure 4g.
Assume that they are arranged at intervals of about 201wIL as shown in FIG.

Of course, the joint width can also be set to zero.

Therefore, about 20 rran of cement mortar material 16 was applied, and after curing and drying for about 20 days, the wall body shown in Fig. 8 was covered with nails 17.
Suppose that it is obtained by adhering to the furrow 18 through the.

■ Shear strength test (shear strain 1/60''''') Mortar wall 560 kg wood siding wall using base plate according to the present invention
101 to 9 ■ Adhesive force (plane tensile adhesive force kp/Cft) Mortar wall using base plate according to the present invention 15 or more conventional lath net construction method
2.6 to 5.0 ■ Free shrinkage mortar wall 14X10-4 Mortar wall constructed using base plate according to the present invention 2, IX
10-4 ■ Heat transmission coefficient Mortar wall according to the present invention 0.862kCa1/rrl-h・0C C Conventional rutal wall 5.3kCa1/-・h1C
■ Watertightness test was conducted in accordance with JIS-A-6711, excluding cement mortar.

No water leakage was observed.

As described above, the base plate according to the present invention has excellent heat insulation, waterproofness, water resistance, workability, and mechanical strength, and when a wall is formed by attaching a hydraulic inorganic wall material. The feature is that cracks and peeling are greatly reduced, and the wall is strong.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the mortar base plate according to the present invention, and FIGS. FIG. 4 is a schematic perspective view showing an example of the distribution of the locking pieces, and FIGS. 5 a to 5 d show an example of the suppression layer provided on the mortar base plate according to the present invention. Figures 6a-'-g are explanatory diagrams showing examples of forming other heat insulating base plates, especially the heat insulating layer, Figures 7a and b are main part explanatory diagrams showing the fixed state of the lath sheet; FIG. 8 is a longitudinal sectional view when a cement mortar wall is formed using the mortar base plate according to the present invention. 1... Surface material, 2... Bottom part, 3... Locking piece, 13... Heat insulation layer, 14... Waterproof sheet , 15...Last sheet.

Claims (1)

[Scope of utility model registration request] The bottom part and the side wall are formed into a concave cross section, and the bottom part itself is cut to protrude outward, and a large number of locking pieces are provided. A male connecting part with an inset edge was provided, the lower end of the other side wall was bent inward, and then protruded outward to form an insertion groove, and the lower edge was protruded outward to form an extension part. a surface material made of a thin metal plate consisting of a female connecting part; a suppressing layer that closes the through hole formed by the formation of the locking piece in the bottom part; and a non-water-absorbing heat insulating layer that fills the recessed part. A mortar base plate integrated with a waterproof sheet covering the back surface of the heat insulating layer, characterized in that a lath sheet material is integrated onto the locking piece by welding.