JP6823361B2 - Corner ruler - Google Patents

Description

The present invention relates to a corner ruler arranged at a corner such as an outside corner and an inside corner of a mortar wall formed in a wooden building.

Conventionally, as a wall of a wooden building constructed by a wooden frame construction method or the like, a mortar wall having fire resistance in which a metal lath is embedded with a lightweight mortar as a mortar has been widely used.

In such a conventional mortar wall, a corner ruler for defining the thickness of the mortar layer to be coated is used at the corners such as the outside corner and the inside corner (see, for example, Patent Document 1). ).

6 and 7 show an example of a conventional corner ruler, FIG. 6 is a schematic front view of a main part, and FIG. 7 is an enlarged side view of FIG.

As shown in FIGS. 6 and 7, the conventional corner ruler 100 defines a pair of attachments 110 that are attached to corners (not shown) to hold the mortar and the thickness of the mortar layer to be coated. It has a ruler unit 120 for the purpose. The thicknesses of the mounting portion 110 and the ruler portion 120 in FIG. 7 are exaggerated.

The pair of mounting portions 110 are each formed in the shape of a rectangular flat plate long in the left-right direction in FIG. Then, the two mounting portions 110, as shown in FIG. 7, the upper side shown above in FIG. 7 which is one end in the width direction orthogonal to the longitudinal direction, i.e. the long side is connected. Further, both mounting portions 110 have mounting surfaces 111 whose facing surfaces facing each other are mounted at the corners, and these mounting surfaces 111 form an opening angle αA equal to the angle formed by the corners. Have been placed. Note that the corner portion formed by two wall surfaces intersecting mortar wall, the angle is generally being at right angles to form, in the opening angle αA in FIG formed at a right angle (90 °) ing.

The ruler portion 120 is formed in the shape of a rectangular flat plate long in the left-right direction in FIG. 6, and the length thereof is formed to be the same as the length of the mounting portion 110. Further, the ruler portion 120 is located on the lower side shown in the lower part of FIG. 7, which is one end in the width direction orthogonal to the longitudinal direction, that is, on the upper portion of the connecting portion of the attachment portion 110 having a pair of long sides shown in the upper part of FIG. It is connected. Further, the ruler portion 120 is arranged so that the angle βA formed with the adjacent mounting portion 110 forms 135 degrees so that the width direction thereof bisects the opening angle αA.

That is, the conventional corner ruler 100 is composed of a pair of mounting portions 110 and a ruler portion 120 that bisects the remaining angle obtained by subtracting the opening angle αA formed by the mounting surfaces 111 of these mounting portions 110 from 360 degrees. , It is formed in a three-pronged cross section. The reference numeral BA in FIG. 7 indicates a bisector that bisects the remaining angle obtained by subtracting the opening angle αA from 360 degrees .

As shown in FIG. 6, each of the pair of mounting portions 110 has a plurality of mortar holding holes 112 penetrating in the thickness direction for holding the mortar (only one is designated in FIG. 6). ) Is provided along the longitudinal direction. Further, the ruler portion 120 is provided with a plurality of mortar insertion holes 121 (only one is designated in FIG. 6) penetrating in the thickness direction along the longitudinal direction, and intersects the mortar walls. It is possible to connect the mortar layers provided on the two wall surfaces. There is also a configuration in which the mortar insertion hole 121 is not provided.

The conventional corner ruler 100 having such a configuration uses a resin as a material and extrudes the resin to form a long resin material having a three-pronged cross section having a pair of mounting portions 110 and a ruler portion 120. After that, it is manufactured by providing a mortar holding hole 112 (punching hole) and a mortar insertion hole 121 (punching hole) by drilling (punching), and then cutting to a predetermined length. Of course, there is also a method of providing the mortar holding hole 112 and the mortar insertion hole 121 after cutting the long resin material to a predetermined length.

Japanese Unexamined Patent Publication No. 10-238064

However, in the conventional corner ruler 100, there is a problem that the mortar is easily peeled off from the contact surface due to the fact that the contact surface with the mortar is a resin, and the mortar retention is inferior.

The conventional corner ruler has a problem that the mortar is easily cracked because the mortar is easily peeled off.

The present invention has been made in view of these points, and an object of the present invention is to provide a corner ruler having excellent mortar retention.

The present invention is a corner ruler arranged in a corner formed by two intersecting wall surfaces of a mortar wall and embedded by the mortar, in order to achieve the above object, in which a metal plate is folded in half and folded. A pair of mounting portions that are formed by extending from each of the ruler portion formed by the ruler portion and the end portion opposite to the bent portion of the ruler portion and having the same thickness as the bent portion are provided. Each portion has a mounting surface to be attached to the corner portion, and both mounting surfaces are formed so as to form an opening angle equal to the angle formed by the corner portion, and the ruler portion is 360 degrees. It is arranged at a position that divides the remaining angle obtained by subtracting the opening angle from the ruler into two equal parts, and the ruler portion and the pair of mounting portions are formed so as to form a three-pronged cross section as a whole. The pair of mounting portions each has a flat plate-shaped substrate portion arranged on the ruler portion side and a metal lath portion integrally formed on the tip side of the substrate portion opposite to the ruler portion. Provide a featured corner ruler.

In the present invention, the metal lath portion may be a flat lath. Thereby, the adhesiveness of the mortar can be enhanced.

In the present invention, the ruler portion may be provided with a plurality of mortar insertion holes penetrating in the plate thickness direction. As a result, the mortar layers provided on the two wall surfaces can be connected at the corners, so that cracks can be prevented from occurring at the corners of the mortar.

According to the corner ruler of the present invention, since the metal lath is integrally formed on the mounting portion, it has excellent effects such as being able to strengthen the holding force of the mortar as compared with the conventional case. As a result, excellent effects such as being able to easily and surely obtain excellent mortar retention are exhibited.

Schematic front view of the first embodiment of the corner ruler according to the present invention. Side view of FIG. It is explanatory drawing which explains the processing state in the embodiment of the manufacturing method of 1st Embodiment of the corner ruler which concerns on this invention in process order, (a) is the state which formed the metal lath on the original plate, (b) is (a). Cutting state where the following original plate was cut Schematic front view showing the main part of the second embodiment of the corner ruler according to the present invention. Sectional drawing which shows the main part of 3rd Embodiment of the corner ruler which concerns on this invention Schematic front view of an example of a conventional corner ruler Side view of FIG.

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

(First Embodiment of Corner Ruler)
1 and 2 show a main part of the first embodiment of the corner ruler according to the present invention, FIG. 1 is a schematic front view, and FIG. 2 is a side sectional view of FIG.

The corner ruler 10 of the present embodiment illustrates that the corner ruler 10 is arranged at a protruding corner formed by two intersecting wall surfaces as a corner portion of a mortar wall.

That is, as shown in FIGS. 1 and 2, the corner ruler 10 of the present embodiment is attached to a ruler portion 20 for defining the thickness of the mortar layer to be coated and a corner portion to hold the mortar. It has a pair of mounting portions 30 and. The thickness of the mortar layer may be only the top coat layer of the mortar or the thickness of the entire mortar.

The ruler portion 20 is formed by folding and folding a metal plate in half, and is formed as a whole in the shape of a long rectangular flat plate along the longitudinal direction shown in the left-right direction of FIG. The apex of the folded portion 21 of the ruler portion 20 is a ruler tip portion 22 that serves as a mark of the thickness of the mortar layer.

The pair of mounting portions 30 are formed as a whole in the shape of a long rectangular flat plate along the longitudinal direction shown in the left-right direction of FIG. Further, the length dimension of each mounting portion 30 is equal to the length dimension of the ruler portion 20. The facing surfaces of the pair of mounting portions 30 facing each other are the mounting surfaces 31 to be mounted at the corners. Further, as shown in FIG. 2, from each of the end portions of the ruler portion 20 opposite to the ruler tip portion 22, that is, the free end portions (long sides) in the width direction orthogonal to the longitudinal direction of the ruler portion 20. The opening angle α formed by the respective mounting surfaces 31 of the pair of mounting portions 30 facing each other is equal to the angle formed by the corners of the mortar wall, and in the present embodiment, a right angle (opening angle α = 90 degrees). It is formed to extend like a ruler.

Further, the ruler portion 20, on the outside of the mounting portion 30 of the pair remaining angle obtained by subtracting the opening angle α formed between the mounting portion 30 of the pair from the 360 degrees (β + β) so as to bisect, ruler portion The angle β formed by the 20 and the mounting portion 30 adjacent to the ruler portion 20 is arranged so as to form 135 degrees (angle β = 135 degrees). Further, the dimensions of the pair of mounting portions 30 in the width direction are equally formed.

Therefore, the corner ruler 10 of the present embodiment is formed so that the ruler portion 20 and the pair of mounting portions 30 form a three-pronged cross section as a whole (FIG. 2).

The opening angle α may be any angle equal to the angle formed by the corners, and can be set according to the angle formed by the corners. Of course, the angle of the corner is generally 90 degrees. Here, reference numeral B in FIG. 2 indicates a bisector that bisects the opening angle α.

Further, the width dimensions of both mounting portions 30 can be made different from each other, if necessary such as a design concept. That is, the width dimension of the mounting portion 30 can be set as needed, such as a design concept.

Each of the mounting portions 30 is located on a flat plate-shaped substrate portion 32 arranged on the ruler portion 20 side and on the tip end side (free end side in the width direction of the mounting portion 30) of the substrate portion 32 opposite to the ruler portion 20. It has a metal lath portion 33 integrally formed.

As the metal lath portion 33 of the present embodiment, a flat lath specified or compliant with Japanese Industrial Standards A5505 is used, and is formed as a whole in the shape of a rectangular flat plate long in the left-right direction in FIG. The metal lath portion 33 is formed by a well-known room temperature stretching and cutting method. Further, as the metal lath portion 33, an expanded metal formed by a cold cutting method specified or compliant with the Japanese Industrial Standards (JISG3351) can also be used.

It should be noted that the metal lath portions 33 provided in the pair of mounting portions 30 may have different width dimensions. That is, the width dimension of the metal lath portion 33 can be set as needed, such as a design concept. Therefore, each of the pair of mounting portions 30 may have a configuration in which a metal lath portion 33 is integrally formed on the tip end side opposite to the ruler portion 20.

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

According to the corner ruler 10 of the present embodiment, since the metal lath portion 33 is integrally formed on the tip side of the pair of mounting portions 30, the holding force of the mortar is held by the corner ruler 100 formed of the conventional resin (FIG. 6). And see FIG. 7). As a result, excellent mortar retention can be easily and surely obtained.

Further, according to the corner ruler 10 of the present embodiment, since each of the pair of mounting portions 30 has a pair of flat plate-shaped substrate portions 32 extending from the ruler portion 20, the corner portion is formed. The opening angle α equal to the angle formed can be reliably maintained. That is, after the corner ruler 10 is attached to the corner, it is possible to easily prevent the opening angle α from being deformed by an external force such as contact with the iron when the mortar is coated with the iron. Of course, even in the state before the corner ruler 10 is attached to the corner portion, it is possible to prevent the corner ruler 10 from being deformed at the boundary portion between the ruler portion 20 and the attachment portion 30 due to an external force.

Further, according to the corner ruler 10 of the present embodiment, since the opening angle α formed by one mounting surface 31 is a right angle, it can be easily and surely installed at the protruding corner.

(Production method)
Here, a method of manufacturing the corner ruler of the present embodiment will be described.

FIG. 3 is an explanatory diagram for explaining the processing state in the embodiment of the method for manufacturing a corner ruler according to the present invention in the order of steps. FIG. 3A is a state in which a metal lath is formed on a master plate, and FIG. 3B follows (a). The cutting state in which the original plate is cut is shown.

The method for manufacturing the corner ruler of the present embodiment (hereinafter, simply referred to as the manufacturing method) exemplifies the method for forming the corner ruler 10 shown in FIG.

The manufacturing method of the present embodiment includes a hoop material obtained by winding a thin steel plate having a thickness of about 0.4-0.8 mm, a rust-preventive thin steel plate such as a hot-dip galvanized steel plate, and a stainless thin steel plate in a strip shape (FIG. 3). (A)) is used as an original plate for processing. As the original plate, a standard size standard plate or a plate other than the standard size (cut plate: sketch material) can be used. The width direction orthogonal to the winding direction of the hoop material 40, a length-side direction of the corner ruler 10.

In the manufacturing method of the present embodiment, the lath processing step, the cutting step, and the bending step are performed in this order.

In the lath processing step, the hoop material 40 as the original plate is fed out from the tip side and conveyed, and a metal lath is formed at a predetermined position during the transfer.

Specifically, the hoop material 40 is fed out from the tip side and traveled along a preset linear traveling path by a well-known conveying device including a pinch roller and a guide roller that also serve as a conveying roller. Then, the metal lath is formed on the original plate by passing through a well-known metal lath forming device arranged in the middle of the traveling path. The traveling direction of the hoop material 40 is indicated by an arrow R in FIG. 3A.

At this time, the transport device intermittently runs the hoop material 40. Then, when the hoop material 40 is stopped from running by the transport device, the metal lath forming device is driven to form the metal lath forming region 41 which becomes the metal lath portion 33 of the mounting portion 30 (hereinafter, referred to as a lath region: FIG. 3). a)) is formed over a predetermined length along the traveling direction of the hoop material 40. Further, when the hoop material 40 is traveled by the transport device, the metal lath forming device is stopped and the hoop material 40 travels in the non-processed region 42 in which the metal lath is not formed, which is the substrate portion of the ruler portion 20 and the mounting portion 30. It is formed over a predetermined length along the direction.

As a result, as shown in FIG. 3A, the lath region 41 and the unprocessed region 42 in which the metal lath is not formed are alternately formed along the traveling direction of the hoop material 40.

In the formation of the lath region 41 by the metal lath forming apparatus, the hoop material 40 travels while forming a large number of linear slits (cuts) in the width direction of the hoop material 40 orthogonal to the traveling direction of the hoop material 40. This is performed by a well-known room temperature stretching cutting method in which a gap is formed by stretching in a direction orthogonal to the slit, which is the direction, to form a net. Here, the lath region 41 is formed over the entire length of the hoop member 40 in the width direction.

Further, the length of the hoop member 40 in the lath region 41 along the traveling direction is set to be twice the length in the width direction of the metal lath portion 33. However, the length of the hoop material 40 formed at the head of the hoop material 40 in the traveling direction along the traveling direction of the lath region 41 may be equal to the length in the width direction of the metal lath portion 33.

The cutting step is for cutting the hoop material 40 forming the lath region 41 at a predetermined position to obtain an intermediate product 43 (FIG. 3B) to be supplied to the next bending step.

Specifically, when the hoop material 40 is stopped by the well-known cutting device arranged on the traveling path of the hoop material 40 that has passed through the metal lath forming device, the arrow in FIG. 3A is used. The intermediate portion of the hoop material 40 in the lath region 41, which is the cutting position CP shown, along the transport direction is cut along the width direction of the hoop material 40, and as shown in FIG. 3 (b), FIG. An intermediate product 43 made of a flat single plate as a whole is obtained by providing metal lath portions 33 at both ends in the left-right direction.

As the cutting device, a fixed blade and a movable blade that moves up and down in the vertical direction so as to come into contact with and separate from the solid blade are installed so as to sandwich the traveling path of the hoop material 40, and the fixed blade and the movable blade are installed. The one that cuts the hoop material 40 can be mentioned.

The bending step is for bending the intermediate product 43 at a predetermined position to obtain a corner ruler. The intermediate product 43 is set in a mold equipped on a press (not shown), and FIG. 3 (b) of the intermediate product 43 (b). The ruler portion 20 is formed by folding the middle portion in the left-right direction of FIG. 3 (b) shown by the two-point chain line of) as the first folding curve 44 and folding it in half, and at the same time, one point of FIG. 3 (b). The boundary between the ruler portion 20 and the mounting portion 30 indicated by the chain wire is set as a pair of second folding curves 45, and the opening angle α formed by the mounting surfaces 31 of the pair of mounting portions 30 becomes a right angle, and the ruler portion 20 opens. Bend so that the angle α is divided into two equal parts. That is, the second folding curve 45 is used as the bending center, and the ruler portion 20 is bent so that the angle β formed by the mounting portion 30 adjacent to the ruler portion 20 is 135 degrees. As a result, the corner ruler 10 shown in FIGS. 1 and 2 is completed in which the ruler portion 20 and the pair of mounting portions 30 form a three-pronged cross section as a whole.

As described above, according to the manufacturing method of the present embodiment, the corner ruler 10 of the present embodiment can be obtained by a simple method.

(Second embodiment of the corner ruler)
FIG. 4 is a schematic front view showing a main part of the second embodiment of the corner ruler according to the present invention.

The corner ruler 50 of the present embodiment is provided with a plurality of mortar insertion holes 24 penetrating in the plate thickness direction in a ruler portion 20 formed by folding and folding a metal plate in half (FIG. 4). Only one code is attached to.). These mortar insertion holes 24 are formed so as to penetrate the folded portion and are arranged along the longitudinal direction of the ruler portion 20. As the planar shape of the mortar insertion hole 24, it is possible to use circular, elliptical, triangular, inverted triangle, trapezoid, parallelogram, various shapes such as semicircular. Further, various shapes can be used alone or in combination. Furthermore, as the arrangement of the mortar insertion holes 24, a linear shape, a staggered shape, or the like can be used, or the mortar insertion holes 24 can be arranged in a plurality of rows.

The mortar insertion hole 24 may be provided as needed, such as the specifications of the corner ruler 50 and the design concept. For example, when there is no space for providing a mortar insertion hole 24 having a size such that the width of the ruler portion 20 is less than 5 mm and the mortar can be easily filled by trowel coating, or when the mortar insertion hole 24 is provided, an external force at the time of mortar coating is provided. If the ruler portion 20 is easily deformed, the mortar insertion hole 24 may not be provided.

Since the other configurations are the same as those of the corner ruler 10 of the first embodiment described above, detailed description thereof will be omitted.

According to the corner ruler 50 of the present embodiment having such a configuration, the same effect as that of the corner ruler of the first embodiment described above is obtained, and the mortar insertion holes 24 are provided on the two wall surfaces at the corners. Since the layers can be connected, it is possible to prevent cracks from occurring at the top of the mortar in the corner.

The mortar insertion hole 24 can be formed by a press equipped with a die and a punch. Further, the step of forming the mortar insertion hole 24 may be provided before the lath processing step, may be provided between the lath processing step and the cutting step, or may be provided between the cutting step and the bending step. It may be provided after the bending process. However, if the step of forming the mortar insertion hole 24 is before folding step, mortar insertion holes 24 will be provided with a first folding line 44 in symmetrical as symmetry line.

(Third embodiment of the corner ruler)
FIG. 5 is a side view showing a main part of the third embodiment of the corner ruler according to the present invention.

The corner ruler 60 of the present embodiment illustrates that the corner ruler 60 is arranged in a corner formed by two intersecting wall surfaces as corners of a mortar wall.

As shown in FIG. 5, the corner ruler 60 of the present embodiment is a mounting surface 31 in which a pair of mounting portions 30 opposite to each other facing each other are mounted on the corners. Then, the opening angle α formed by the mounting surfaces 31 of the pair of mounting portions 30 extending from each of the free ends in the width direction orthogonal to the longitudinal direction of the ruler portion 20 is 90 degrees (opening angle α = It is formed so as to form a 90 degree).

Further, the ruler portion 20 is mounted inside the pair of mounting portions 30 so as to bisect the opening angle α formed by the pair of mounting portions 30, that is, the ruler portion 20 and the mounting portion 20 adjacent to the ruler portion 20. The angle β formed with the portion 30 is arranged so as to form 45 degrees (angle β = 45 degrees).

Since the other configurations are the same as those of the corner ruler 10 of the first embodiment described above, detailed description thereof will be omitted.

The corner ruler 60 of the present embodiment is attached to the ruler portion 20 and the ruler portion 20 adjacent to the ruler portion 20 with the second folding curve 45 as the bending center in the bending step in the manufacturing method of the first embodiment described above. It is manufactured by bending so that the angle β formed with the portion 30 is 45 degrees.

According to the corner ruler 60 of the present embodiment having such a configuration, the same effect as that of the corner ruler 10 of the first embodiment described above can be obtained.

Further, according to the corner ruler 60 of the present embodiment, the ruler portion 20 is inside the pair of mounting portions 30 so as to bisect the opening angle α formed by the pair of mounting portions 30, that is, the ruler portion 20. Since the angle β formed by the ruler portion 20 and the mounting portion 30 adjacent to the ruler portion 20 is arranged to be 45 degrees, it can be easily and surely installed in the corner portion.

The corner ruler 60 of the present embodiment may be provided with the same mortar insertion hole 24 as the corner ruler 50 of the second embodiment. In this case, the step of forming the mortar insertion hole 24 can be provided before the lath processing step, between the lath processing step and the cutting step, or between the cutting step and the bending step.

The present invention is not limited to the above-described embodiments, and various modifications can be made as needed.

10, 50, 60 Corner ruler 20 Ruler part 21 Bent part 22 Ruler tip part 24 Mortar insertion hole 30 Mounting part 31 Mounting surface 32 Board part 33 Metal lath part α (Making a pair of mounting surfaces) Opening angle β (Ruler part And the angle between the and the mounting part next to this ruler part)

Claims (3)

A corner ruler that is placed in the corner formed by two intersecting walls of the mortar wall and buried by the mortar.
A ruler part formed by folding a metal plate in half and folding it over
It is formed so as to extend from each of the ends opposite to the bent portion of the ruler portion, and includes a pair of mounting portions having the same thickness as the bent portion .
Each of the pair of mounting portions has a mounting surface to be mounted on the corner portion, and both mounting surfaces are formed so as to form an opening angle equal to the angle formed by the corner portion.
The ruler portion is arranged at a position that bisects the remaining angle obtained by subtracting the opening angle from 360 degrees.
The ruler portion and the pair of mounting portions are formed so as to form a three-pronged cross section as a whole.
The pair of mounting portions each have a flat plate-shaped substrate portion arranged on the ruler portion side and a metal lath portion integrally formed on the tip side of the substrate portion opposite to the ruler portion. A corner ruler featuring. The corner ruler according to claim 1, wherein the metal lath portion is a flat lath. The corner ruler according to claim 1 or 2, wherein the ruler portion is provided with a plurality of mortar insertion holes penetrating in the plate thickness direction.

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