JP6705622B2 - Mortar coating guide - Google Patents

Description

The present invention relates to a mortar coating thickness guide suitable for use as a measure of the coating thickness of a mortar layer when forming a mortar wall in which a lath net is embedded in a wooden building.

BACKGROUND ART Conventionally, a mortar wall having a fireproof property in which a lath net is buried with mortar has been widely used as an outer wall of a wooden building constructed by a wooden frame construction method or the like.

Such a mortar wall is a cement mortar or lightweight mortar so that a lath net such as a metal lath is attached to a mortar base surface made of a wood base material by a staple through a waterproof sheet such as asphalt felt and supported by the lath net. The mortar is embedded in the mortar layer by applying the mortar to a predetermined thickness, for example, a thickness of 15.0 mm or more, and the mortar base surface is covered with the mortar layer. It is widely known that the mortar layer has a two-layer structure in which the mortar layer is divided into a plurality of layers, for example, double coating to form an undercoat layer for burying a lath net and an overcoat layer laminated on the undercoat layer. Has been.

Here, the coating work of applying the mortar to the lath net is performed by an operator, mainly a plasterer, and whether or not the mortar is uniformly applied with a predetermined coating thickness depends on the skill of the operator. ing.

Therefore, a mortar coating thickness guide has been proposed as a guide for the coating thickness of the mortar layer. As such a mortar coating thickness guide, an adhesion base portion that adheres to the mortar base surface inside the mesh of the lath net, a fixing needle portion that protrudes to one side sandwiching this adhesion base portion, and an adhesion base portion are provided. With a thickness guide portion protruding to the other side sandwiched, after attaching the lath net to the surface of the mortar base by stapling, by inserting the fixing needle portion into the mortar base by pushing in the mesh of the lath net, Adhesion The base portion is adhered to the mortar base surface, and the tip of the thickness guide portion is placed at a height position corresponding to the position of the surface of the mortar layer to be coated with a predetermined coating thickness. By using it as a guide, mortar coating work can be performed regardless of the skill of the operator so that the predetermined coating thickness is maintained, and the mortar coating thickness can be easily checked. There is a thickness guide (for example, see Patent Document 1).

Further, as a mortar coating thickness guide, there is also a guide in which a plastering material having fire resistance similar to that of mortar is formed into a columnar shape and one end thereof is inserted into a mesh of a lath net to be used (for example, refer to Patent Document 2).

JP, 2011-032668, A JP, 2006-342608, A

However, in the conventional mortar coating thickness guide, there is a problem that when the mortar is coated, the mortar may tilt due to the contact of the coating iron, and may not function as a guide for the mortar coating thickness.

Therefore, it is an object of the present invention to provide a mortar coating thickness guide that can reliably maintain the state of being attached to the lath net even when the coating iron comes into contact when the mortar is coated.

In order to achieve the above-mentioned object, the feature of the mortar coating thickness guide of the present invention is that the coating thickness of the mortar layer when the mortar is coated to form the mortar wall so as to bury the lath net attached to the mortar base surface. A mortar coating thickness guide used as a guide for a pair of base plates, one end of which is opposed to the mortar base surface, and a connecting plate connected to the other ends of the base plates. And a mesh of lath nets formed on both side surfaces in the width direction orthogonal to the longitudinal direction of the elastically deforming portion at both longitudinal ends of the elastically deforming portion. The elastically deformable portion elastically deformed so as to reduce the distance between the pair of substrate portions, and the recessed portion is fitted into the mesh of a lath net from one end side of the substrate portion. The elastically deformable portion elastically returns and the recess is fitted into the mesh of the lath net, whereby the elastically deformable portion is attached to the mesh of the lath net, and one end of the substrate portion is brought into close contact with the mortar base surface. The point is that the tip of the elastically deformable portion that is most distant from the mortar base surface is formed at the height position of the surface of the mortar layer.

By adopting such a configuration, the elastically deformable portion can be elastically deformed so as to reduce the interval between the pair of substrate portions by a simple operation of applying an external force from the outside. The elastically deformable portion can be easily inserted from one end side of the substrate portion into the mesh of the lath mesh attached to the mortar base surface. Further, the concave portion can be fitted into the mesh of the lath net while the elastically deformed elastically deformed portion is elastically restored by a simple operation of removing an external force applied to the elastically deformed portion. In this state, a biasing force is applied to the concave portion in a direction that prevents the substrate portion from elastically returning due to the mesh, and one end of the substrate portion is directed toward the mortar base surface by the lath net attached to the mortar base surface. Since the urging force for pressing is applied, the posture of the elastically deformable portion can be reliably retained. With this, when the mortar is coated, even if the coating trowel contacts the mortar coating thickness guide, it is possible to reliably hold the state in which one end of the substrate portion is in contact with the mortar base surface. The state of being attached to the lath net can be reliably maintained. Further, the concave portion can easily regulate the height position of the lath net from the mortar base surface. Therefore, it is possible to easily and surely obtain the standard of the height position of the surface of the mortar layer.

Further, in the present invention, the connecting plate portion is formed in a mountain shape whose central portion in the longitudinal direction is a convex top in the direction away from the mortar base surface, and both longitudinal ends are connected to the other end of the substrate portion. In addition, the recess may be formed at a boundary portion between the substrate portion and the connecting plate portion. Further, by adopting such a configuration, the connecting plate portion can easily impart elasticity to the elastically deformable portion so that the distance between the pair of substrate portions is reduced. Further, the concave portion can easily regulate the height position of the lath net from the mortar base surface.

Further, in the present invention, a mesh shape of the lath are the rhombus to vary the length of a diagonal line spacing in the free state of the substrate portion of the pair is the serial lath in the short direction diagonal of mesh size It is formed to be larger, and the width dimension of the elastically deformable portion is formed to be smaller than the short-side diagonal dimension of the mesh of the lath net, and the pair of substrate portions are arranged in the longitudinal direction of the mesh of the lath net. It can be configured to be positioned on a diagonal line so as to be inserted into the mesh . By adopting such a configuration that the distance between the pair of substrate portions in the free state is made larger than the dimension of the diagonal line of the mesh of the lath net , the operator can pinch it with his/her fingers or the like. When an external force is applied from the outer side to the inner side of the mortar coating pressure guide, the distance between the pair of substrate portions is easily reduced, and the elastically deformable portion is formed inside the mesh of the lath mesh from the free end side of the pair of substrate portions. The portion can be positioned and inserted on the diagonal line in the longitudinal direction of the mesh of the lath net . Further, since the concave portion is supported at four points by the mesh of the lath net, the mounting posture when the mortar coating thickness guide is mounted on the mesh of the lath net is more stable, and the mounting state can be more surely maintained. .

Furthermore, in the present invention, the gap on one end side of the pair of substrate portions may be formed larger than the gap on the other end side. By adopting such a configuration, it is possible to more reliably hold the state in which one end of the substrate portion is in contact with the mortar base surface, so that the mounting posture in which the mortar coating thickness guide is attached to the mesh of the lath mesh Can be further stabilized.

Still further, in the present invention, the elastically deformable portion and the recess may be formed by punching a metal plate made of a spring material and bending the punched member in this order. By adopting such a configuration, the elastically deformable portion and the concave portion can be easily obtained in a simple process.

According to the mortar coating thickness guide of the present invention, when applying mortar, even when the coating iron comes into contact with the mortar, it is possible to reliably maintain the state of being attached to the lath net. ..

It is a perspective view, (b) is a front view, (c) is a side view which shows the principal part of the whole structure of the mortar coating thickness guide which concerns on this invention. Development view of the mortar coating thickness guide in Fig. 1. It is an explanatory view showing a state in the middle of a construction example of a mortar wall using the mortar coating thickness guide of Fig. 1, and showing a state in which the mortar coating thickness guide shown in Fig. 1 is elastically deformed. It is a figure which shows the progress of the construction example of the mortar wall following FIG. 3, and demonstrates the state which attached the mortar coating thickness guide of FIG. 1 to the lath net, (a) is a typical front view, (b) ) Is a schematic plan view FIG. 5 is a structural diagram showing an example of construction of a mortar wall following FIG. 4, showing a state in which mortar is applied and completed.

Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings.

The mortar coating thickness guide 10 of this embodiment is attached to the mesh 20a of the lath net 20 that supports mortar (FIGS. 4 and 5). As shown in FIG. 1, the mortar coating thickness guide 10 of this embodiment is formed on the elastically deforming portion 12 and an elastically deforming portion 12 formed of a metal plate made of a spring material such as a stainless steel strip for springs. And a recess 14 formed therein.

As the lath net 20, known laths such as metal laths such as flat laths, hump laths and corrugated laths, wire laths such as rhombus laths, instep laths and round laths can be used. In this embodiment, a hump lath having a diamond-shaped mesh 20a is used.

The elastically deformable portion 12 has a pair of substrate portions 16 arranged to face each other, and a connecting plate portion 18 connected to each of the pair of substrate portions 16.

Each of the pair of substrate portions 16 is formed in a rectangular flat plate shape as a whole along the longitudinal direction shown in the vertical direction of FIG. The lower ends, which are one end in the longitudinal direction of both substrate portions 16, are free ends of the elastically deformable portion 12, and are brought into contact with the mortar base surface 22 when a mortar wall to be described later is constructed ( 4 and 5).

The width dimension and the thickness dimension shown in the left-right direction of FIG. 1C, which are orthogonal to the longitudinal direction of the both board portions 16, are equal to each other. In the present embodiment, the length of the substrate 16 is about 11.0 mm, the width is about 6.0 mm, and the thickness is about 0.15 mm. Further, the distance between the facing surfaces at the lower ends of both substrate portions 16 is set to about 16.0 mm, which is larger than the distance between the facing surfaces at the upper ends of both substrate portions 16 which is set to about 15.0 mm. . This is because, when fitted with a mortar coating thickness guide 10 to lath 20, in the interval at the lower end of each substrate 16 is parallel slightly large squid than the distance at the top, or both substrates 16, lath 20 This is for stabilizing the mounting posture of the mortar coating thickness guide 10 attached to, and to reliably hold the state in which the lower end of the substrate portion 16 is in contact with the mortar base surface 22.

Spacing between the opposing surfaces of the lower end of the pair of substrates 16, for example 1.0mm approximately than short direction diagonal dimension of the mesh 20a of the lath 20 is large is formed, the width dimension of the elastically deformable portion 12 The size of the mesh 20a of the lath mesh 20 is smaller than the diagonal dimension of the mesh 20a by, for example, about 1.0 mm. As a result, the mortar coating thickness guide 10 can be easily inserted inside the mesh 20a of the lath net 20 from the lower end of the substrate portion 16 which is the free end of the elastically deformable portion 12.

The connecting plate portion 18 is for connecting the pair of substrate portions 16 at a preset interval. The connecting plate portion 18 of the present embodiment has a mountain shape having a top portion 18a whose center portion in the longitudinal direction is formed in a convex curve in a direction away from the mortar base surface 22, that is, as shown in FIG. 1(b), As a whole, it is formed in an inverted V shape on the front side, and both ends in the longitudinal direction are connected to the upper ends which are the other ends in the longitudinal direction of both substrate parts 16. The width dimension and the thickness dimension of the connecting plate portion 18 are made equal to those of the substrate portion 16. The top portion 18a of the connecting plate portion 18 is the tip most distant from the mortar base surface 22 when attached to the lath net 20, and the height position of the surface of the mortar layer 30 when the mortar wall 30 is installed. And is used as a mark of the thickness of the mortar layer 30 (FIG. 5). The height dimension from the lower end of the substrate portion 16 to the top portion 18a is about 30.0 mm, which corresponds to a thickness of the mortar layer 30 of about 30.0 mm.

Note that the width dimension of the connecting plate portion 18 may be different from the width dimension of the board portion 16, or the thickness dimension of the connecting plate portion 18 may be different from that of the board portion 16 depending on the design concept or the like. The size may be different from the thickness. Further, the shape of the connecting plate portion 18 is an example, and can be variously changed.

The recesses 14 are fitted into the meshes 20a of the lath net 20 when the mortar coating thickness guide 10 is attached to the lath net 20, and the elastic deformable portions 12 are provided at both ends in the longitudinal direction of the elastic deformable portion 12. Are formed on both side surfaces in the width direction, specifically, at a boundary portion between the plate portion 16 and the connecting plate portion 18. Recess 14 of the present embodiment is formed in a semi-circular shape and is arranged symmetrically on both sides of the width direction of the elastically deformable portion 12. The shape and size of the recess 14 may be any shape and size that can be fitted into the mesh 20a of the lath net 20. For example, as the shape of the recess, various shapes such as a rectangular shape, a semicircular shape, and a semielliptical shape can be used.

In the mortar coating thickness guide 10 of the present embodiment, a metal plate made of a spring material, that is, a sketch material or a hoop material is punched by a press using a punch and a die and punched into a preset shape shown in the development view of FIG. a striking bled step Ru obtain an intermediate product which is a member easily by performing a bending process to obtain the intermediate product bending to the finished product (the mortar coating thickness guide 10) by pressing in this order using a mold Obtainable.

As the material of the mortar coating thickness guide 10, metal such as carbon steel strip for springs such as cold rolled steel strip for springs, phosphor bronze plate for springs, and various polymer materials such as plastics can be used. .. Here, as a manufacturing method when plastic is used as the material of the mortar coating thickness guide 10, injection molding can be mentioned. Further, when using plastic, it is important to set the thickness dimension, the width dimension, etc. so that they can be easily elastically deformed without being damaged. Of course, each of the thickness dimension and the width dimension need not be uniform.

The dimensions of the mortar coating thickness guide 10 can be set according to the thickness of the mortar layer 30, the type and size of the lath net 20, and the like.

Here, an example of construction of the mortar wall 30 using the mortar coating thickness guide 10 of the present embodiment will be described.

Construction of the mortar wall 30 using the mortar coating thickness guide 10 of the present embodiment is performed by a worker sandwiching the mortar coating thickness guide 10 in a free state shown by a two-dot chain line in FIG. As indicated by the thick arrow, by applying an external force from the outside to the inside of the mortar coating thickness guide 10, elasticity is provided so that the distance between the pair of substrate parts 16 is reduced as shown by the solid line in FIG. Transform it. As a result, the lower ends of both board portions 16 can be inserted into the mesh 20a of the lath net 20. In this state, the elastically deformable portion 12 is inserted from the lower end side of the substrate portion 16 into the mesh 20a of the lath net 20 attached to the mortar base surface 22 by staples. Then, the external force applied to the mortar coating thickness guide 10 is removed to elastically restore the elastically deformable portion 12.

At this time, the recess 14 is fitted into the mesh 20a of the lath net 20. As a result, the elastically deformable portion 12 is attached to the mesh 20a of the lath net 20, the lower end of the substrate portion 16 is brought into close contact with the mortar base surface 22, and the tip of the elastically deformable portion 12 most distant from the mortar base surface 22 is provided. It is arranged at a height position on the surface of the mortar layer 30. This completes the attachment of the mortar coating thickness guide 10. An attachment state in which the mortar coating thickness guide 10 is attached to the mesh 20a of the lath net 20 is shown in FIG. The mortar base surface 22 in this embodiment is a surface of a waterproof sheet 26 such as asphalt felt attached to the wood base material 24, as shown in FIG. The installation interval of the mortar coating thickness guide 10 is not particularly limited, but may be set according to the type of the lath net 20, the installation area of the lath net 20, the work amount of the installation work, the installation cost, and the like. Good. For example, the installation interval may be about 1.8 m.

Next, in a state where the mortar coating thickness guide 10 is attached to the mesh 20a of the lath net 20, the operator applies mortar to the mortar base surface 22 with a coating iron to form the mortar layer 30. Form the wall 30. At this time, the worker performs the work by using the top portion 18a of the connecting plate portion 18 as a standard for the height position of the surface of the mortar layer 30. Further, the top portion 18a of the connecting plate portion 18 can be used for confirming the coating thickness of the coated mortar layer 30. The structure of this mortar wall 30 is shown in FIG.

The mortar coating thickness guide 10 may be attached to the mesh 20a of the lath net 20 in advance, and the lath net 20 having the mortar coating thickness guide 10 attached thereto may be attached to the mortar base surface 22.

Examples of the mortar base surface 22 include structural plywood as the wooden base material 24, a waterproof sheet 26 attached to the lath net 20, and the like.

Further, as shown in FIG. 5, the mortar layer 30 may have a two-layer structure in which the lath net 20 is embedded with the undercoat layer 32a of the mortar, and the overcoat layer 32b of the mortar is further laminated on the undercoat layer 32a. Good.

Next, the operation of the present embodiment having the above-described configuration will be described.

According to the mortar coating thickness guide 10 of this embodiment, the elastically deforming portion 12 elastically deforms so as to reduce the distance between the pair of substrate portions 16 by a simple operation of applying an external force from the outside. Therefore, the elastically deformable portion 12 can be easily inserted into the mesh 20a of the lath net 20 attached to the mortar base surface 22 from its free end side. The recess 14 is elastically deformed by a simple operation of removing the external force applied to the elastically deforming portion 12 after inserting the elastically deforming portion 12 into the mesh 20a of the lath net 20 from its free end side. The recess 14 can be easily fitted into the mesh 20a of the lath net 20 while the portion 12 elastically returns. In this state, an urging force is applied to the concave portion 14 in a direction that prevents the substrate portion 16 from elastically returning due to the mesh 20a, and the lath net 20 attached to the mortar base surface 22 is attached to the lower end of the substrate portion 16. Since the biasing force that presses the mortar base surface 22 is applied, the posture of the elastically deformable portion 12 can be reliably maintained. Thus, even when the coating iron comes into contact with the mortar when it is applied, the lower end of the substrate portion 16 can be reliably held in contact with the mortar base surface 22. The state of being attached to can be securely held. Further, the concave portion 14 can easily regulate the height position of the lath net 20 from the mortar base surface 22.

Therefore, according to the mortar coating thickness guide 10 of the present embodiment, it is possible to easily and surely obtain the standard of the height position of the surface of the mortar layer 30, and to easily confirm the coating thickness of the mortar layer 30. it can. Further, since it can be easily attached to the lath net 20 without using a tool, it is possible to improve the workability by the operator and thus the usability.

Further, according to the mortar coating thickness guide 10 of the present embodiment, the connecting plate portion 18 is formed in a mountain shape having a convex top portion 18a in a direction in which the central portion in the longitudinal direction is separated from the mortar base surface 22. Both ends are connected to the other end of the base plate portion 16, and the recess 14 is formed at the boundary between the base plate portion 16 and the connecting plate portion 18. Elasticity that reduces the distance between the pair of substrate portions 16 can be easily imparted. Further, the concave portion 14 can easily regulate the height position of the lath net 20 from the mortar base surface 22. Accordingly, when the mortar has two layers, it can be used as a standard for the height position of the surface of the undercoat layer 32a in which the lath net 20 is embedded.

Furthermore, according to the mortar coating thickness guide 10 of the present embodiment, the shape of the mesh 20a of the lath net 20 is a rhombus that makes the length of the diagonal line different , and the pair of substrate portions is the mesh length of the lath net. as it is positioned on the direction of the diagonal line is inserted into the mesh spacing in the free state of the pair of substrate portion 16 is formed larger than the short side direction diagonal dimension of the mesh 20a of the lath 20, elastic The width dimension of the deformed portion 12 is smaller than the diagonal dimension of the mesh 20a of the lath mesh 20 in the lateral direction . Therefore, an external force is applied from the outer side to the inner side of the mortar coating pressure guide to easily bend and elastically deform the gap in the free state of the pair of substrate portions 16 secured with a dimension larger than the dimension of the diagonal line in the lateral direction. Meanwhile, the pair of substrate portions are positioned on a diagonal line in the longitudinal direction of the mesh of the lath net, and the mortar coating thickness guide 10 is easily provided inside the mesh 20a of the lath net 20 from the free end side of the elastically deforming portion 12. Can be inserted. Further, since the recess 14 is supported at four points by the mesh 20a of the lath net 20, the mounting posture when the mortar coating thickness guide 10 is mounted on the mesh 20a of the lath net 20 can be stabilized, and the mounting state can be improved. It can be held securely. Therefore, it is convenient for the operator.

Furthermore, according to the mortar coating thickness guide 10 of the present embodiment, the distance between the pair of substrate portions 16 on the lower end side is formed larger than the distance on the upper end side. The state of being in contact with can be more reliably held. That is, the mounting posture in which the mortar coating thickness guide 10 is attached to the mesh 20a of the lath net 20 can be further stabilized.

Furthermore, according to the mortar coating thickness guide 10 of the present embodiment, since the elastically deformable portion 12 and the recessed portion 14 are formed by punching and bending a metal plate made of a spring material, a simple process is possible. The elastically deformable portion 12 and the concave portion 14 can be easily obtained.

The present invention is not limited to the above-described embodiment, and various modifications can be made if necessary.

10 Mortar Coating Thickness Guide 12 Elastic Deformation Section 14 Recess 16 Substrate Section 18 Connecting Plate Section 18a Top 20 Lath Net 20a Network 22 Mortar Base Surface 30 Mortar Wall 32 Mortar Layer

Claims (5)

A mortar coating thickness guide that is used as a guide for the coating thickness of the mortar layer when applying mortar to form a mortar wall so that the lath net attached to the mortar base surface is embedded,
A plate-shaped elastically deformable portion having a pair of substrate portions arranged opposite to each other, one end of which is in contact with the mortar base surface, and a connecting plate portion connected to the other end of each of the pair of substrate portions,
On both end sides in the longitudinal direction of the elastically deformable portion, there are recesses fitted to the mesh of lath nets formed on both side surfaces in the width direction orthogonal to the longitudinal direction of the elastically deformable portion,
After inserting the elastically deformed portion elastically deformed so that the distance between the pair of substrate portions is reduced from one end side of the substrate portion into the mesh of the lath net, the elastically deformable portion elastically returns to the mesh of the lath net. By fitting the concave portion to the elastically deformable portion, the elastically deformable portion is attached to the mesh of the lath net, one end of the substrate portion is brought into close contact with the mortar base surface, and further, the elastically deformable portion is most separated from the mortar base surface. The mortar coating thickness guide is characterized in that the formed tip is arranged at the height position of the surface of the mortar layer. The connecting plate portion is formed in a mountain shape in which the central portion in the longitudinal direction is a convex top portion in the direction away from the mortar base surface, and both longitudinal ends are connected to the other end of the substrate portion,
The mortar coating guide according to claim 1, wherein the concave portion is formed at a boundary portion between the substrate portion and the connecting plate portion. The mesh shape of the lath net is a rhombus that makes the length of the diagonal line different ,
The distance between the pair of substrate portions in the free state is formed to be larger than the dimension of the latitudinal mesh in the lateral direction diagonal line, and the width of the elastically deformable portion is defined as the latitudinal mesh diagonal direction in the lateral direction. It is formed smaller than the size, and is formed so that the pair of substrate portions can be inserted with the lath mesh positioned on a diagonal line in the longitudinal direction of the mesh of the lath mesh. The mortar coating guide described. The mortar coating thickness guide according to any one of claims 1 to 3, wherein a distance between the pair of substrate portions on one end side is larger than a distance on the other end side. 5. The elastically deformable portion and the recessed portion are formed by punching a metal plate made of a spring material and bending the punched member in this order. The mortar coating thickness guide according to item 1.

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