JP2575117Y2 - Plaster ruler for mortar construction - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is applied to a case where a smaller step is formed by mortar on each surface forming a step at an angle like a stair, and mainly a shallow groove or bulge on the side of the stair. The present invention relates to a mortar plastering ruler used when mortaring a part.

[0002]

2. Description of the Related Art Conventionally, when a shallow groove is formed in a side wall of a staircase or a root portion of a handrail, or when a slightly protruding protruding portion is formed, a sectional shape is 12 mm × 3.
A long and narrow wooden plaster ruler of about 6 mm in length is cut at an appropriate length and at an angle corresponding to the site to form a vertical ruler 1 and a horizontal ruler 2. 4
As shown in (1), the mortar was constructed by hitting the stair body 4 with mortar on the concrete surface or mortar finishing the step front surface 4a and the step upper surface 4b of the stairs. FIG. 3 shows a step front surface 4 a and a step top surface 4.
For the staircase body 4 and the side wall 5 of the staircase formed by b,
This shows a construction state when the groove 6 is formed. A front mortar 7a and a top mortar 7b are installed at a portion corresponding to the edge of the groove 6 on the center side of the stairs, using the front portion 1a of the ruler 1 and the top surface 2a of the ruler 2 as guides for the iron. . Most mortar finishing on the staircase main body 4 away from the groove 6 is performed by using another plaster ruler at the corner. FIG. 4 shows a step main body 4 formed by a step front surface 4a and a step upper surface 4b.
And a construction state when a raised portion 8 is formed on the side wall 5 of the stairs. The front mortar 8a and the upper mortar 8b of the raised portion 8 are constructed using the front portion 1a of the ruler 1 and the upper portion 2a of the ruler 2 as guides for the iron.
In this case, there may be a case where a support for a handrail rises from the ridge 8 instead of the side wall 5, but the construction is performed in the same manner.

[0003]

[Problems to be Solved by the Invention] When using the above-mentioned conventional wooden plaster rulers 1 and 2,
Ideally, the front part 1a and the top part 2 of the rulers 1 and 2
a is connected to the hook shape without any gap, and the side surfaces of the two rulers that contact the mortar are in the same plane, but in fact, two rulers are separately struck, Due to the indentation, the front of the step is inclined from the vertical, and in most cases it cannot be hit in an ideal state. Also, usually, a long plaster ruler is cut at the construction site with a saw, and rulers 1 and 2 that match the length and inclination of the front of the step are made and used, so the cut surface of the ruler Is rarely cut at a predetermined angle, and in most cases, when the ends of the rulers 1 and 2 are brought into contact with each other to form a hook, it is already difficult to achieve the ideal state. .
When the mortar is installed in a state where the rulers 1 and 2 are not properly installed, the corners cannot be formed neatly, the finished steps are not uniform, or there is a step between the side surfaces of the abutting ends of the rulers 1 and 2. The problem arises that this must be corrected after removing the ruler. Therefore, such plaster rulers 1 and 2 are considerably difficult to install properly, and even an expert person has a problem that it takes a considerable amount of time to install it properly. The purpose of the present invention is to provide a plaster ruler for mortar construction that can solve such problems.

[0004]

The plaster ruler for mortar construction of the first invention has a triangular shape in which the front shape is elongated in a straight line with a constant width and is linearly elongated in the middle of the longitudinal direction from one side to the other side. It has a notch and has a shape with a certain thickness on the back side in the front shape, and the whole is integrally formed by a synthetic resin material in which the thin portion where the apex of the triangle approaches is repeatedly flexible. It is characterized by being formed in.

[0005] The plastering ruler for mortar construction of the second invention is:
A first portion which is elongated in a rectangular cross section and has a length substantially corresponding to the height of the steps of the stairs, and which has the same rectangular cross section as the first portions and has a width in the front-rear direction of the steps of the stairs; A sloped or curved surface comprising a second portion formed to a corresponding length such that when the end surfaces of the first and second portions are brought into contact with each other, the first and second portions are substantially at right angles. And the outer surface portions of the substantially right-angled corners of the first portion and the second portion are connected by a thin flexible connecting portion.

[0006]

For example, when a shallow groove or ridge on the side of the stairs is to be constructed, the plaster ruler for mortar construction of the first invention prepares a long mortar in advance and prepares a long mortar from the notch to both ends. The length is adjusted by cutting both ends to the height corresponding to the height of the front of the stairs and the width of the front and back. Use the plaster ruler for mortar construction of the second invention as it is or as necessary. And cut both ends in the same manner as above. The method of use is substantially the same as the conventional method described with reference to FIGS. 3 and 4, but in setting the plaster ruler, since the plaster ruler is an integrated one connected by a thin portion or a connecting portion, When nailed at the desired position, the part located on the front part of the stairs and the part located on the top part of the stairs do not displace each other,
Both sides of the ruler are located on the same plane in the front part and the upper part of the stairs, and the corners formed by the guide surfaces of both rulers are also very good. It should be noted that, in the second invention, the fact that the end face where the first part and the second part come into contact with each other is formed as a slope or a curved surface does not matter so much even if there is a certain gap in this part. It is sufficient that the outer surface of the portion, that is, the surface forming the groove side surface and the protrusion side surface at the corner formed by the surface serving as the guide of the iron is the same surface.

[0007]

FIG. 1 shows a first embodiment of the present invention. The plaster ruler 11 for mortar construction of this embodiment has a front shape of FIG.
As shown in (a), it is elongated in a straight line with a constant width (12 mm), and has a triangular cutout portion 12 whose apex approaches one side from one side in the middle of the longitudinal direction. The length of the portion 13 from the notch 12 to one end is 31
0 mm, the length of the portion 14 from the notch 12 to the other end is 210 mm, and the front shape has a constant thickness (30 mm) toward the back side.
The ruler 11 as a whole is formed of a slightly hard synthetic resin sponge that is slightly dented when strongly pressed with a fingertip. Therefore, the thin portion 15 close to the top of the triangle has repetitive flexibility. The notch 12 has an isosceles triangle with an apex angle of 10
It is set to 0 °. This angle of 100 ° is to make the corners around 80 ° when the ruler 11 is bent and used, so that the front part of the stairs is inclined so that the upper part is located slightly closer to the lower part than the lower part. In many cases, there is a lot of variation in the angle, so that it is possible to cope with this.

The ruler 11 is manufactured as follows. That is, a sponge plate of a synthetic resin having a thickness of 12 mm and a width of 520 mm and an appropriate length is prepared, and a sponge having the same triangular cross-section as the notch 12 is formed on one surface at a position 210 mm from an end in the width direction. The sponge plate was cut along the entire length of the plate, and the sponge plate was cut in the length direction at a width of 30 mm to obtain a large number of the same rulers 11.

The ruler 11 configured as described above is used, for example, when the front mortar 7a and the upper mortar 7b are formed on the stair body 4 in FIG.
As shown in FIG. 3 (c), the notch 12 is bent inside, and a portion 14 is arranged instead of the vertical ruler 1 and a portion 13 is arranged instead of the horizontal ruler 2 in FIG. I do. Note that a temporary fixing adhesive (for example, an aqueous glue) may be used instead of hitting with the nail 3. If it is necessary to adjust the length, cut off the excess part with scissors.
The construction of the front mortar 7a and the top mortar 7b is the same as the conventional one. After the mortar is solidified, the ruler 11 is removed. The inner surface of the formed groove 6 has a portion 13 of the ruler 11,
14 is formed on the back surface in FIG.
Since the back surfaces of 3 and 14 are on the same plane, they are formed in accordance therewith. The corners of the formed front mortar 7a and top mortar 7b are also formed well following the corners of the ruler 11.

Also, when the front mortar 8a and the top mortar 8b are formed on the staircase body 4 in FIG. 4 to form the groove 6, the front, top, and side surfaces of the raised portion 8 are substantially the same. Well formed. In addition, the existence of the thin portion 15 of the ruler 11 can cope with the difference in the inclination of the front part of the stairs and can be linearly extended so that the ruler 11 does not become bulky in stock, transportation, storage and the like.

FIG. 2 shows a second embodiment of the present invention. The plaster ruler 21 for mortar construction of this embodiment is almost the same in size and shape as that of the first embodiment.
The parts 23 and 24 corresponding to the parts 3 and 14 are separately formed of wood, and the part corresponding to the thin part 15 is a tape 26.
Is formed. In the drawing, reference numeral 27 denotes a prepared hole of a nail provided as needed.

The same effect can be obtained by using the ruler 21 of the second embodiment in substantially the same manner as that of the first embodiment. The material of the ruler 21 is not limited to wood, and may be a synthetic resin.

[0013]

As described above, according to the present invention, the vertical ruler and the horizontal ruler, which were conventionally used by being separately strung, are formed in a state where they are previously connected in a correct positional relationship. There is no displacement between the two during installation,
The corners are also correctly installed in a short time without any gaps or distortions, and without special attention even by a skilled person. Therefore, mortar construction is also favorable. For this reason, the efficiency of the work of constructing the grooves and the raised portions on the side portions of the stairs with the mortar is greatly improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, (a) front view,
(B) is a side view, and (c) is a front view in a state of being bent to a use state.

FIG. 2 is a partial front view showing a second embodiment of the present invention.

FIG. 3 is a perspective view of stairs for explaining conventional plaster rulers 1 and 2 for mortar construction and a method of using the same.

FIG. 4 is a perspective view of a conventional staircase ruler 1 and 2 for mortar construction and a staircase for explaining a different use method thereof.

[Explanation of symbols]

 Reference Signs List 4 staircase main body 4a step front 4b step upper surface 5 side wall 6 groove 7a front mortar 7b upper surface mortar 11 plaster ruler for mortar construction 12 notch 13 part 14 part 15 thin part 21 plaster ruler for mortar 22 notch 23 part 24 Part 25 Thin part

Claims (2)

(57) [Scope of request for utility model registration] 1. A frontal shape is elongated in a straight line with a constant width, and has a triangular cutout whose apex is approached from one side to the other side in the middle of the longitudinal direction, and is constant toward the rear side in the frontal shape. A mortar plaster ruler, characterized in that the thin portion near the top of the triangle is integrally formed of a synthetic resin material having repetitive flexibility. 2. A first portion which is elongated in a rectangular cross section and has a length substantially corresponding to the height of a step of a stair, and a square section having the same rectangular cross section as that of the first portion, before and after the step of the stair. A second portion formed to have a length substantially corresponding to the width in the direction, and when the end surfaces of the first portion and the second portion are brought into contact with each other, the first portion and the second portion are substantially at right angles. A plasterer for mortar construction, wherein the outer surface portions of the substantially right-angled corners of the first portion and the second portion are connected by a thin flexible connecting portion. ruler.