JP2016199935A - Mortar coating thickness guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mortar coating thickness guide capable of definitely keeping itself installed on a lath net even if a coating trowel contacts the guide when coating the mortar.SOLUTION: A mortar coating thickness guide comprises: a tabular elastic deformation part 1, which has a pair of substrates 16, whose one ends butt a mortar backing surface so as to face each other, and a connection plate part 18 that connects to the other ends of the pair of substrates; and a concavity 14, which is fit into a mesh of the lath net formed on both side faces in a width direction perpendicular to the longer direction of the elastic deformation part at both end sides in the longer direction of the elastic deformation part.SELECTED DRAWING: Figure 1

Description

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

  2. Description of the Related Art Conventionally, as an outer wall of a wooden building constructed by a wooden frame construction method or the like, a mortar wall having fire resistance in which a lath net is embedded with mortar has been widely used.

  Such a mortar wall is made of cement mortar, 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 through a waterproof sheet such as asphalt felt with a staple, and is supported by this lath net. The mortar is coated to a predetermined thickness, for example, 15.0 mm or more, and the lath net is embedded in the mortar layer, and the mortar base surface is covered with the mortar layer. It is widely known that the mortar layer has a two-layer structure of an undercoat layer in which a lath net is embedded and an overcoat layer laminated on the undercoat layer by laminating a plurality of times, for example, by applying twice. It has been.

  Here, the coating work for 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 guide has been proposed as a guide for coating thickness of the mortar layer. As such a mortar coating thickness guide, an adhesion base portion that is in close contact with the mortar base surface inside the lath mesh, a fixing needle portion that protrudes on one side across the adhesion base portion, and an adhesion base portion are provided. A thickness guide portion projecting on the other side sandwiched, and after attaching a lath net with a staple to the mortar base surface, by inserting the fixing needle into the mortar base and pushing it into the mortar base The adhesion base part is brought into close contact with the mortar base surface, and the tip of the thickness guide part is arranged at a height position corresponding to the position of the surface of the mortar layer to be applied with a predetermined coating thickness. By using it as a guide, it is possible to perform mortar coating work so that the predetermined coating thickness is maintained regardless of the skill of the operator, and the mortar coating thickness can be easily confirmed. There are mortar coating thickness guide that (for example, see Patent Document 1).

  Moreover, as a mortar thickness guide, there is a mortar thickness guide that is made of a plastering material having a fireproofing property similar to that of mortar, and one end of which is inserted into a lath mesh (for example, see Patent Document 2).

JP 2011-032668 A JP 2006-342608 A

  However, in the conventional mortar thickness guide, there is a problem that when the mortar is applied, the mortar is tilted by the contact of the iron for coating, and may not function as a guide for the mortar thickness.

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

  In order to achieve the above-mentioned object, the mortar thickness guide of the present invention is characterized by the coating thickness of the mortar layer when the mortar is applied so as to embed the lath net attached to the mortar base surface to form the mortar wall. A mortar thickness guide used as a guide for a mortar, a pair of oppositely arranged substrate parts whose one ends are in contact with a mortar base surface, and a connecting plate connected to the other ends of the pair of substrate parts And a mesh of lath nets formed on both side surfaces in the width direction perpendicular to the longitudinal direction of the elastic deformation portion at both ends in the longitudinal direction of the elastic deformation portion. And inserting the elastically deformed portion elastically deformed so as to reduce the distance between the pair of substrate portions from one end side of the substrate portion into a lath mesh, The elastic deformation part returns elastically and the lath net By fitting the concave portion into the eye, the elastic deformation portion is attached to a lath mesh, and one end of the substrate portion is in close contact with the mortar ground surface, and further from the mortar ground surface of the elastic deformation portion. It is in the point formed so that the space | interval front-end | tip may be arrange | positioned in the height position of the surface of a mortar layer.

  By adopting such a configuration, the elastically deformable portion can be elastically deformed so as to reduce the distance 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 a lath mesh attached to the mortar base surface. In addition, the recess can be fitted into the mesh of the lath mesh while the elastically deformed elastic deformed portion is elastically restored by a simple operation of removing the external force applied to the elastic deformable 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 a lath net attached to the mortar base surface. Since the pressing biasing force is applied, the posture of the elastically deformable portion can be reliably held. Thereby, when applying the mortar, even if the iron for coating contacts the mortar coating thickness guide, it is possible to reliably hold the state where one end of the substrate portion is in contact with the mortar base surface, The state attached to the lath net can be securely held. Further, the recess can easily regulate the height position of the lath net from the mortar base surface. Therefore, the standard of the height position of the surface of a mortar layer can be obtained easily and reliably.

  Further, in the present invention, 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 a direction away from the mortar base surface, and both longitudinal ends are connected to the other end of the substrate portion. The recess may be formed at a boundary portion between the substrate portion and the connecting plate portion. And by employ | adopting such a structure, the connection board part can provide easily the elasticity which the space | interval of a pair of board | substrate part reduces with respect to an elastic deformation part. Further, the recess can easily regulate the height position of the lath net from the mortar base surface.

  Furthermore, in the present invention, the mesh shape of the lath net is a rhombus, and the distance between the pair of substrate portions is formed larger than the dimension of the diagonal in the short direction of the lath net, and the elastic deformation The width dimension of the part may be configured to be smaller than the diagonal dimension in the lateral direction of the mesh of the lath mesh. And by adopting such a configuration, the distance between the pair of substrate portions can be easily reduced so that the elastically deformable portion can be inserted from the free end side inside the lath mesh. Can do. Further, since the recess is supported at four points by the mesh of the lath mesh, the mounting posture when the mortar thickness guide is attached to the mesh of the lath mesh is more stable, and the mounting state can be more reliably maintained. .

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

  Furthermore, in the present invention, the elastically deformable portion and the concave portion may be formed by performing punching processing of a metal plate made of a spring material and bending processing of the punched member in this order. And by employ | adopting such a structure, an elastic deformation part and a recessed part can be obtained easily by a simple process.

  According to the mortar coating thickness guide of the present invention, when the mortar is applied, there is an excellent effect that the state attached to the lath net can be reliably maintained even when the coating iron contacts. .

The principal part of the whole structure of the mortar coating thickness guide which concerns on this invention is shown, (a) is a perspective view, (b) is a front view, (c) is a side view. Development view of the mortar thickness guide in Figure 1 FIG. 1 is a diagram illustrating an intermediate process of a mortar wall construction example using the mortar coating guide of FIG. 1 and illustrating a state in which the mortar coating guide illustrated in FIG. 1 is elastically deformed. FIG. 3 is a diagram illustrating the progress of a construction example of a mortar wall following FIG. 3, illustrating a state in which the mortar thickness guide of FIG. 1 is attached to a lath net, (a) is a schematic front view, (b ) Is a schematic plan view Fig. 4 shows an example of construction of a mortar wall following Fig. 4 and shows a completed structure after coating with mortar.

  The present invention will be described below with reference to embodiments shown in the drawings.

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

  As the lath net 20, known ones such as a metal lath such as a flat lath, a hump lath, and a corrugated lath, and a wire lath such as a rhombus lath, an instep lath, and a round lath can be used. In the present embodiment, a hump lath having a rhombus mesh 20a is used.

  The elastic deformation portion 12 includes a pair of substrate portions 16 disposed 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 plate shape that is long along the longitudinal direction shown in the vertical direction of FIG. And the lower end which is the one end of the longitudinal direction of both the board | substrate parts 16 is made into the free end of the elastic deformation part 12, and is contact | abutted to the mortar base surface 22 at the time of construction of the mortar wall mentioned later ( 4 and 5).

  Each of the width dimension and the thickness dimension shown in the left-right direction of FIG. 1C orthogonal to the longitudinal direction of the two substrate portions 16 are made equal. In the present embodiment, the length of the substrate portion 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 opposing surfaces at the lower ends of both substrate parts 16 is set to about 16.0 mm, which is larger than the distance between the opposing surfaces at the upper end, which is set to about 15.0 mm. This is because when the mortar coating guide 10 is attached to the lath mesh 20, the spacing at the lower end of each substrate portion 16 is slightly larger than the spacing at the upper end, or the both substrate portions 16 are parallel to each other. This is to stabilize the attachment posture of the attached mortar coating thickness guide 10 and to reliably hold the state where the lower end of the substrate portion 16 is in contact with the mortar base surface 22.

  The distance between the opposing surfaces at the lower ends of the pair of substrate parts 16 is formed to be, for example, about 1.0 mm larger than the dimension of the diagonal direction of the mesh 20a of the lath mesh 20, and the width dimension of the elastic deformation part 12 is The lath mesh 20 is formed to be smaller by, for example, about 1.0 mm than the diagonal dimension of the mesh 20a in the lateral direction. Thereby, the mortar coating thickness guide 10 can be easily inserted into the inner side of the mesh 20 a of the lath mesh 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 with a preset interval. As shown in FIG. 1 (b), the connecting plate portion 18 of the present embodiment includes a top portion 18a formed in a convex curve in a direction in which the longitudinal center portion is separated from the mortar base surface 22. As a whole, it is formed in a front inverted V shape, and both ends in the longitudinal direction are connected to the upper ends as the other ends in the longitudinal direction of both substrate portions 16. The width and thickness of the connecting plate portion 18 are equal to those of the substrate portion 16. The top portion 18 a of the connecting plate portion 18 is the tip most distant from the mortar base surface 22 in the attached state attached to the lath net 20, and the height position of the surface of the mortar layer 30 during construction of the mortar wall 30. The mortar layer 30 is used as a mark for the thickness (FIG. 5). Moreover, the height dimension from the lower end of the board | substrate part 16 to the top part 18a is about 30.0 mm, and is made to respond | correspond to the thickness of the mortar layer 30 of about 30.0 mm.

  It should be noted that the width dimension of the connecting plate portion 18 may be different from the width dimension of the substrate portion 16 and the thickness dimension of the connecting plate portion 18 may be set to be different from that of the substrate portion 16 as required by the design concept. It may be a dimension different from the thickness dimension. Moreover, the shape of the connection plate part 18 is an example, and can be variously changed.

  The concave portion 14 is fitted to the mesh 20a of the lath mesh 20 when the mortar thickness guide 10 is attached to the lath mesh 20, and the elastic deformable portion 12 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 the boundary portion between the plate portion 16 and the connecting plate portion 18. The concave portion 14 of the present embodiment is formed in a semicircular shape that penetrates the elastic deformation portion 12 in the thickness direction, and is disposed symmetrically on both side surfaces of the elastic deformation portion 12 in the width direction. 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 mesh 20. For example, various shapes such as a rectangular shape, a semicircular shape, and a semielliptical shape can be used as the shape of the concave portion.

  The mortar coating thickness guide 10 of the present embodiment is punched into a preset shape shown in the developed view of FIG. 2 by punching a metal plate made of a spring material, that is, a sketch material or a hoop material, using a punch and a die. Easy by performing a punching process for punching to obtain an intermediate product as a member and a bending process for bending the intermediate product by a press using a mold to obtain a finished product (mortar thickness guide 10) in this order. Can get to.

  In addition, as a material of the mortar coating guide 10, metals, such as spring carbon steel strips, such as a spring cold rolled steel strip, a phosphor bronze plate for springs, and various polymer materials, such as a plastic, 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. When plastic is used, it is important to set the thickness dimension, the width dimension, etc. so that it can be easily elastically deformed without being damaged. Of course, the thickness dimension and the width dimension do not have to be uniform.

  In addition, each dimension of the mortar coating thickness guide 10 can be set by the thickness of the mortar layer 30, the type and size of the lath mesh 20, and the like.

  Here, the construction example of the mortar wall 30 using the mortar coating thickness guide 10 of this embodiment is demonstrated.

  The construction of the mortar wall 30 using the mortar coating guide 10 of the present embodiment is performed by the operator holding the mortar coating guide 10 in a free state indicated by a two-dot chain line in FIG. As indicated by the thick arrows, by applying an external force from the outside to the inside of the mortar coating guide 10, elasticity is provided so that the distance between the pair of substrate portions 16 is reduced as shown by the solid line in FIG. Deform. As a result, the lower ends of both substrate portions 16 can be inserted into the mesh 20 a of the lath mesh 20. In this state, the elastic deformation portion 12 is inserted from the lower end side of the substrate portion 16 into the mesh 20a of the lath mesh 20 attached to the mortar base surface 22 by staples. Thereafter, the external force applied to the mortar coating thickness guide 10 is removed, and the elastic deformation portion 12 is elastically restored.

  At this time, the recess 14 is fitted into the mesh 20 a of the lath mesh 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 in close contact with the mortar ground surface 22, and the tip that is farthest from the mortar ground surface 22 of the elastically deformable portion 12 is The surface of the mortar layer 30 is disposed at a height position. Thereby, attachment of the mortar coating thickness guide 10 is complete | finished. FIG. 4 shows an attachment state in which the mortar thickness guide 10 is attached to the mesh 20a of the lath mesh 20. FIG. In addition, the mortar base surface 22 in this embodiment is made into the surface of waterproof sheets 26, such as asphalt felt stuck on the wooden base material 24, as shown in FIG. Moreover, the installation interval of the mortar coating 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 amount of installation work, the installation cost, and the like. Good. For example, the installation interval may be about 1.8 m.

  Next, the mortar thickness guide 10 is attached to the mesh 20a of the lath net 20, and the mortar is coated on the mortar base 22 with a coating iron to form the mortar layer 30. A wall 30 is formed. At this time, the operator works using the top portion 18 a of the connecting plate portion 18 as a guide for the height position of the surface of the mortar layer 30. Further, the top portion 18 a of the connecting plate portion 18 can be used for confirming the coating thickness of the coated mortar layer 30. The structure of the mortar wall 30 is shown in FIG.

  It is also possible to attach the mortar thickness guide 10 to the mesh 20 a of the lath net 20 in advance and attach the lath net 20 to which the mortar thickness guide 10 is attached to the mortar base surface 22.

  Further, examples of the mortar base surface 22 include a structural plywood as the wood substrate 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 a lath net 20 is embedded with a mortar undercoat layer 32a and a mortar topcoat layer 32b 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 guide 10 of the present embodiment, the elastic deformation portion 12 is elastically deformed so as to reduce the interval 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 mesh 20 attached to the mortar base surface 22 from the free end side. Further, the concave portion 14 is elastically deformed by a simple operation of removing the external force applied to the elastic deformation portion 12 after the elastic deformation portion 12 is inserted into the mesh 20a of the lath net 20 from the free end side. The recess 14 can be easily fitted to the mesh 20a of the lath mesh 20 while the portion 12 is elastically restored. In this state, a biasing 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 a lath net 20 attached to the mortar base surface 22 is applied to the lower end of the substrate portion 16. Since the urging force that presses toward the mortar base surface 22 is applied, the posture of the elastic deformation portion 12 can be reliably held. Accordingly, when the mortar is applied, even if the coating iron comes into contact, the state in which the lower end of the substrate portion 16 is in contact with the mortar base surface 22 can be reliably held, so that the lath net 20 The state attached to the can be securely held. Further, the recess 14 can easily regulate the height position of the lath net 20 from the mortar base surface 22.

  Therefore, according to the mortar coating guide 10 of the present embodiment, a guide for the height position of the surface of the mortar layer 30 can be obtained easily and reliably, and the coating thickness of the mortar layer 30 can be easily confirmed. it can. Moreover, 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 thickness guide 10 of the present embodiment, the connecting plate portion 18 is formed in a mountain shape in which the central portion in the longitudinal direction is a convex top portion 18a in the direction away from the mortar base surface 22, and the longitudinal direction Since both ends are connected to the other end of the substrate portion 16 and the recess 14 is formed at the boundary portion between the substrate portion 16 and the connecting plate portion 18, the connecting plate portion 18 is connected to the elastic deformation portion 12. It is possible to easily impart elasticity that reduces the distance between the pair of substrate portions 16. Further, the recess 14 can easily regulate the height position of the lath net 20 from the mortar base surface 22. Thereby, it can be used as a standard of the height position of the surface of the undercoat layer 32a in which the lath net 20 is embedded when the mortar has two layers.

  Furthermore, according to the mortar thickness guide 10 of the present embodiment, the shape of the mesh 20a of the lath mesh 20 is a rhombus, and the distance between the pair of substrate portions 16 in the free state is short of the mesh 20a of the lath mesh 20. Since the width of the elastically deformable portion 12 is smaller than the diagonal dimension of the mesh 20a of the lath mesh 20, the mortar is formed inside the mesh 20a of the lath mesh 20. The coating thickness guide 10 can be easily inserted from the free end side of the elastic deformation portion 12. Further, since the recess 14 is supported at four points by the mesh 20a of the lath mesh 20, the mounting posture when the mortar coating thickness guide 10 is attached to the mesh 20a of the lath mesh 20 can be stabilized, and the mounting state can be changed. It can be held securely. Therefore, it is convenient for the operator.

  Furthermore, according to the mortar thickness guide 10 of the present embodiment, the distance between the lower end sides of the pair of substrate portions 16 is formed larger than the distance between the upper end sides, so that the lower end of the substrate portion 16 is the mortar base surface 22. It is possible to hold the state in contact with the head more reliably. That is, the attachment posture in which the mortar coating thickness guide 10 is attached to the mesh 20a of the lath mesh 20 can be further stabilized.

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

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

DESCRIPTION OF SYMBOLS 10 Mortar thickness guide 12 Elastic deformation part 14 Recess 16 Substrate part 18 Connection board part 18a Top part 20 Lath net 20a Net 22 Mortar ground surface 30 Mortar wall 32 Mortar layer

Claims (5)

A mortar thickness guide used as a guide for the coating thickness of the mortar layer when coating the mortar so as to embed the lath net attached to the mortar base surface and forming the mortar wall,
A plate-like elastically deformable portion comprising a pair of opposed substrate portions, one end of which is in contact with the mortar base surface, and a connecting plate portion connected to each other end of the pair of substrate portions;
A concave portion that is fitted to meshes of a lath mesh formed on both side surfaces in the width direction perpendicular to the longitudinal direction of the elastic deformation portion at both ends in the longitudinal direction of the elastic deformation portion;
After the elastically deforming portion elastically deformed so as to reduce the distance between the pair of substrate portions is inserted into a lath mesh from one end side of the substrate portion, the elastic deformable portion is elastically restored and the lath mesh When the recess is fitted to the elastic deformation portion, the elastic deformation portion is attached to a lath mesh, and one end of the substrate portion is in close contact with the mortar ground surface, and further, the elastic deformation portion is most spaced from the mortar ground surface. A mortar thickness guide, characterized in that the formed tip is disposed at a height position on the surface of the mortar layer. The connecting plate portion is formed in a mountain shape with the central portion in the longitudinal direction being a convex top in a direction away from the mortar base surface, and both longitudinal ends are connected to the other end of the substrate portion,
The mortar coating thickness 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,
An interval between the pair of substrate portions is formed to be larger than a dimension of a diagonal in a short direction of the mesh of the lath net;
3. The mortar thickness guide according to claim 1, wherein a width dimension of the elastically deformable portion is formed to be smaller than a diagonal dimension in a short direction of the mesh of the lath net.   The mortar thickness guide according to any one of claims 1 to 3, wherein an interval on one end side of the pair of substrate portions is formed larger than an interval on the other end side.   5. The elastic deformation portion and the concave portion are formed by performing punching processing of a metal plate made of a spring material and bending processing of a punched member in this order. The mortar thickness guide according to claim 1.

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