JPH07279303A - Construction material for wall and the like using thinned log - Google Patents

Abstract

PURPOSE:To manufacture a construction material excellent in the strength and a heat insulating property at a low cost by providing a plurality of semi- columnar segments from thinned logs through cutting in the longitudinal direction, and attaching them to one another while their cut faces are overlapped in such a way that the roots and the tops are positioned opposing alternately. CONSTITUTION:Thinned logs are cut into halves longitudinally so that two semi-columnar segments 1 are produced from each piece. The cut faces are overlapped in the width within 1cm of the radius of each top 4 so that the tops 4 and roots 3 of the semi-columnar segments 1 are positioned opposingly and are fastened by an adhesive of epoxy type, and thus a columnar construction material is formed. Further a plurality of such pieces are coupled together using screws 9 in such an arrangement that the tops and the roots 3 are positioned opposing alternately, and thus a panel is accomplished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention uses thinned logs,
It relates to building materials suitable for walls and partitions.

[0002]

2. Description of the Related Art In the afforestation of cedar, cypress, pine, etc., seedlings are initially densely planted, but they are thinned out after about 10 years because they will breed and hinder their growth. Thinned logs are obtained by cutting thinned trees into appropriate lengths. A tree cut from the forest is called a log, and the thicker cut at the root is called the main opening, and the narrower cut at the tip of the trunk is called the end opening.Logs are distinguished by the diameter of the end opening. . That is, if the diameter of the end opening is less than 14 cm, a small log, 14-
Those with a size of 30 cm are called medium logs, and those with a size of 30 cm or more are called large logs. Thinned logs correspond to small logs and thin middle logs. It is decided whether to use lumber or timber for the diameter of the end of the timber, but small-diameter logs are so thin that they cannot be timber or timber.

Conventionally, small-sized thinned logs that have been peeled off have been used as logs for building scaffolding, logs for piles or rice hanging, as is, but iron pipes have been used for these purposes. Since it has come to be used and an automatic dryer is used for drying rice, small-thinning thinned logs have almost no use and are only used for piles. for that reason,
The reality is that small-thinning logs are left in the plantation area.

Therefore, in recent years, due to the influence of log house orientation, various proposals using thinned logs have been made as a building material having an appearance similar to a log house. For example, the device described in Japanese Utility Model Laid-Open No. 60-179717 discloses that a large number of pieces of wood obtained by cutting both side surfaces of a log are arranged side by side, and a thin joint material is inserted into each cut surface to connect them to form a panel shape. In the invention described in JP-A-58-156651, a large number of octagonal rod-shaped members are formed by shaving the periphery of the rod-shaped members, and a joint material is fitted and connected to form a panel. The invention described in Japanese Utility Model Laid-Open No. 01-48204 is a laminated material in which the same octagonal rod-shaped bodies are connected by an adhesive. Further, the device described in Japanese Utility Model Laid-Open No. 61-43006 is a plate material in which thinned logs are lumbered into a plate, and a large number of these are lined up and bonded to a veneer plate.
The invention described in the publication is a panel formed by lumbering thinned logs into small quadrangular prisms, and arranging and adhering a large number of them in a matrix.

[0005]

DISCLOSURE OF THE INVENTION The panel-like building material using the above thinned logs is obtained by cutting the side surface to a certain thickness, and in particular, the invention described in Japanese Utility Model Laid-Open No. 01-48204 As for the appearance, only the scraped octagonal surface can be seen, and since it is not the natural shape of a log as it is, it has no log-house-like natural beauty. Actual Kaisho 60
In the invention described in Japanese Patent No. 179717, since both sides of the log are scraped, the surface has a rounded shape, but it is necessary to make the whole the same thickness in order to connect the logs. Since both sides are carved with the same width toward the main opening, it is not the shape of a log itself, so an artificial feel is inevitable.
In other inventions, a plate or a square timber is used, so that the appearance is flat and is far from a log house-like interest. In addition, these are quite expensive building materials because of the large number of sawing processes.

The present invention solves these problems, and has a natural appearance of unprocessed thinned logs of semi-cylindrical shape with scattered nodes, which is completely different from the conventional construction materials using thinned logs. The purpose is to provide an inexpensive log house-like building material that is characterized by the fact that the cross section of the cut surface can be seen side by side on the front and back, and is excellent in strength and heat insulation, suitable for walls and partitions. The purpose is to contribute to the development of forestry by expanding the demand for thinned logs.

[0007]

According to the present invention, a cut surface 2 of two semi-cylindrical 1 obtained by vertically cutting a stripped thinned log is used as a main opening 3
Is a building material in which the cut surfaces 2 are overlapped and fixed to each other with a width in the range of 1 cm from the radius of the end opening 4 so that the end openings 4 and the end openings 4 are alternately opposite to each other. The building material is a panel-like structure in which the fixing portions 5 having widths within the above range are sequentially connected and fixed laterally. For cutting thinned logs, in addition to the half-cylinder 1 cut in half, there is also a half-cylinder 1 cut to a thickness of up to three-fourths of the diameter, and the cross section is a truncated circle. The semi-cylinder 1 on the opposite side in this case has a thickness of approximately one-quarter or more of the diameter, and its cross section is arcuate.

In the perspective view of the building material having the two semi-cylindrical columns 1 fixed in FIG. 1, a thinned log is cut into two vertically divided parts.
The semi-cylinders 1 of the book are overlapped with the cut surfaces 2 so that the respective source openings 3 and the end openings 4 are opposite to each other, and the respective center lines 6 are laterally moved with the width of the radius of the end opening 4. By moving in parallel, the cut surface 2 has the fixed portion 5 with the width of the end opening 4 radius.
Since they are overlapped with each other, this fixing portion 5 is fixed. In this way, the natural appearance of the thinned log with the knots 7 interspersed, and the cut surface 2 excluding the fixing part 5, that is, the knots 7 are beautiful knots with the knots 7 scattered. It is a pillar-shaped building material where you can see. Moreover, what used three or four semi-columns 1 is a columnar building material with a rather wide width. When cutting thinned logs is not divided into two equal parts of the diameter, for example, when cut with a thickness of two-thirds of the diameter, a round barbed surface with a circular cross section and the grain-exposed portion 8 are lined up on the surface. Visible in
The back surface is a construction material in which the curved surface of the curved surface having the arc-shaped cross section and the grain of the grain exposed portion 8 can be seen. Fasteners such as screws 9 and nails and bolts are used for fixing, but various adhesives are also used. As the adhesive, for example, epoxy-based Oshigadain 7030 (trademark), Stamic EA255A (trademark), urethane-based Takenate XA-W147NS (trademark), and other Fratac K-540 (trademark) are used.

Regarding the superposition, if the fixing width of the fixing portion 5 is narrow, a portion having a small thickness is formed and the strength is poor, so that there is a limit, and the width from the radius of the end opening 4 to 1 cm is limited.
The limit is about cm. The maximum strength is in the width of the radius of the end opening 4, and the smaller the fixing width of the fixing portion 5, the lower the strength.

FIG. 2 is a perspective view of a panel in which a large number of the semi-cylindrical fixing portions 5 of the semi-cylindrical portion 1 are fixed and the fixing width of the fixing portion 5 is narrowed in the columnar building material. It is a panel-shaped building material in which a plurality of the building materials that are fixedly attached are arranged, and the fixing portions 5 having the same width as the cutting materials 2 are overlapped and connected and fixed. In this construction material, the surface of the semi-cylindrical 1 and the grain-exposing portion 8 were alternately appeared on the front and back sides,
It is very interesting. When the width of the fixing portion 5 is changed without being fixed, as shown in FIG. 3A, which is a perspective view of the building material of the embodiment in which the intervals, the thicknesses, and the cutting positions are different,
Since the interval between the semi-cylindrical columns 1 and the width of the grain-exposed portion 8 are changed, the building material is more interesting. In addition, the thickness of thinned logs is not always constant, and there are some that are mixed and used with different thicknesses. The one shown in Fig. 3B uses thinned logs with various thicknesses. It is a very interesting building material in which the thickness of the semi-cylindrical column 1 and the width of the grain opening 8 are changed. Furthermore, when using a semi-cylinder 1 whose cutting is made with a thickness of ⅔ of the diameter, FIG.
As shown in FIG. 3C, the semi-cylindrical 1 having a circular cross section on the surface and almost the appearance of a log is formed in the grain-exposed portion 8
Along with that, it has become a building material with outstanding naturalness.

In the perspective view of the panel having the corner portion shown in FIG. 4, two panels, in which the width of the fixing portion 5 is equal to the radius of the end opening 4, are thinned at the inner corner aligned with the angle of 90 °. A panel having a corner portion obtained by fixing a corner member 10 obtained by vertically dividing a log into four. In addition, two panels 90
There is also a panel having a shape bent at an angle of 60 °, for example, using a corner member 10 vertically divided into 6 parts, and a corner member 10 vertically divided into 3 parts is used.
Some panels are bent at 0 °. Further, there are panels having a plurality of corners, such as a U-shape and a Z-shape.

[0012]

The function of fixing the cut surface 2 is to fix the front end 3 and the end end 4 of the semi-cylindrical 1
Since they are overlapped with each other in reverse, the end opening 4 side with low strength and the source opening 3 side with high strength overlap each other. It is a building material. In addition, both from the front and the back, the building material has an interesting appearance in which the natural appearance of a semi-cylindrical, beautiful wooden surface with knots 7 interspersed with the natural grain is seen alternately. It is a mixture of thinned logs having different thicknesses, a mixture of different widths of the fixing portion 5, and a semi-cylinder 1 having a cutting thickness larger than the radius of the end opening 4. Shows that the thickness and roundness of the semi-cylinder 1, the width of the grain-exposing portion 8 and the interval between the semi-cylinders 1 are changed, which is very interesting and has a great sense of nature and is entertaining.

In use, it may be used vertically, horizontally, or diagonally. A large number of columnar building materials are arranged at intervals, and as shown in the perspective view of the partitioning of the seats in FIG. 5, the upper and lower parts are connected by a semi-cylindrical 1 or an appropriate material to form a vertical bar shape or a horizontal bar shape, The one provided with legs is interesting as, for example, a seat partition in a dining room or the like, and the one without legs is interesting if it is used as a partition in a lobby or a partition between a kitchen and a living room. The panel-shaped building material as shown in Fig. 2 or the panel-shaped building material with corners as shown in Fig. 4 has sufficient thickness and strength and is excellent in heat insulating property. It can be used as a ceiling to create a building with a log house-like sensation.

[0014]

EXAMPLE An example shown in FIG. 1 is a building material in which two semi-cylindrical columns 1 are fixed to each other, and the end opening 4 has a diameter of 8 cm, the main opening 3 has a diameter of 12 cm, and a length of 240 cm. Two thin cylinders 1 obtained by cutting a thinned log into two equal parts vertically
And the main opening 3 are in opposite directions, that is, the main opening 3 of one semi-cylindrical 1 and the end opening 4 of the other semi-cylindrical 1 are aligned, and the center line 6 of each semi-cylindrical 1 is the end opening. Width of 4 radius, ie 4c
In the state of being laterally displaced by m, the epoxy adhesive Stamic EA255A (trademark) was applied, pressed, and fixed in several hours. Therefore, the fixed portion 5 having a width of 4 cm
The two semi-cylinders 1 are fixed by the above, and when viewed from the surface, one has a diameter of the end opening 4 of 8 cm and a diameter of the main opening 3 of 12
It is a semi-cylindrical column of cm, and you can see the bark with dots 7.
The other semi-cylindrical 1 has 4 cm at the end opening 4 and 8 cm at the base opening 3 in which the holes in the perforated portion 8 are visible, width 16 cm, length 240
It is one building material having a columnar shape of cm.

FIG. 2 shows the above-mentioned building material in which the diameter of the end opening 4 is 1
It is a panel made by connecting 5 pillar-shaped building materials that are 0 cm in diameter and have a diameter of 3 cm for the main opening 3 and have a cut surface 2 of 2 cm in width and are stacked side by side.
As the fixing method, screws 9 are used, and 8 screws 5 having a length of 5 cm are screwed into each semi-cylindrical 1 at 30 cm intervals and fixed. Since the width of the fixing portion 5 to be superposed is 2 cm, the width is 102 cm and the length is 240 cm due to the five columnar building materials, and the end opening 4 is 10 cm and the front opening 3 is 14 c.
It is a panel in which the semi-cylindrical wood surface of which the nodes 7 are scattered and the grain of the grain-exposing portion 8 having the wide width of 10 cm and the narrow width of 6 cm alternately appear. .

The embodiment shown in FIG. 4 will be described. Thinning log 4 with a diameter of 10 cm for the end 4 and 14 cm for the base 3
Using a book, the width of the fixed part 5 is equal to the radius of the end opening 4c
m, and the adhesive is Stamic EA255A (trademark)
A corner member obtained by vertically cutting a thinned log of the same thickness into four equal parts in a corner part obtained by combining two panels bonded at right angles using the above adhesive agent. 240cm long building material with
A panel with a width of 61 cm is bent at 90 ° in the center, and the semi-cylindrical wood grain with the nodes 7 scattered on the front and back surfaces and the grain of the grain revealing portion 8 appear alternately. I have put it out.

[0017]

EFFECTS OF THE INVENTION Unlike the conventional panel-shaped building material, the panel-shaped material of the present invention has a semi-cylindrical beautiful wood surface on both front and back surfaces, and beautiful grains alternately appear. However, because it is interesting because it is full of natural beauty like a log house, and has excellent strength and heat insulation, it is widely used as a wall that also serves as an inner wall and an outer wall, an indoor wall, and a partition. It is effective. Both the columnar ones have a beautiful semi-cylindrical surface with beautiful knots and semi-cylindrical dots on both the front and back sides.Therefore, combine a large number of them and use them as vertical cross-shaped or horizontal cross-shaped partitions, or It is extremely effective if it is used in the form of a partition and is used for partitioning seats in the dining room. Moreover, it is a very cheap raw material like scrap wood, and because it is easy to process, it can be produced at low cost, and if it is widely used for walls, etc., it is possible to construct a log house-like building at half the conventional construction cost. It is possible. The use of the building material of the present invention in various fields promotes the consumption of a large amount of thinned logs, which has a great effect on the cultivation and activation of forestry.

[Brief description of drawings]

FIG. 1 is a perspective view of a columnar building material in which two semi-cylindrical columns are fixed.

FIG. 2 is a perspective view of a panel in which a plurality of semi-cylindrical fixing portions have a narrow width and are fixed.

FIG. 3 is a partial perspective view of a building material having different intervals, thicknesses, and cut thicknesses.

FIG. 4 is a perspective view of a panel having a corner portion.

FIG. 5 is a perspective view of a seat partition in which columnar building materials are combined.

[Explanation of symbols]

 1 semi-cylindrical 2 cutting surface 3 main opening 4 end opening 5 fixed part 6 center line 7 section 8 grain opening part 9 screw 10 corner member

Claims (1)

[Claims] 1. The cutting edge (2) of two or more semi-cylindrical (1) obtained by vertically cutting a thinned log has a main opening (3) and an end opening (4) alternately opposite to each other. A building material suitable for walls that use thinned logs made by stacking and fixing cut surfaces (2) with a width in the range of 1 cm from the radius of the end opening (4) so as to face.