JPS6328759Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the roof structure of a log cabin-like wooden building made by combining a large number of processed log materials.

The roof of a conventional log cabin is formed by arranging a large number of logs on crossbars installed at the top of the eave girder, and it is inevitable that there will be gaps between the logs. There is a problem with rainwater seeping into the interior through the gaps. For this reason, it is necessary to provide a barrier or the like to prevent rainwater from entering below the logs, which has the disadvantage of complicating the structure and increasing construction costs.

This invention was made to eliminate the above-mentioned drawbacks, and provides a roof structure for a log cabin-like wooden building that is simple in structure and can reliably prevent rainwater from entering.

That is, in this invention, a roof main body is formed of a large number of logs in which V-shaped grooves are formed, each having a pair of sloped surfaces having the same width and an equal inclination angle, and the roof main body is formed of a plurality of logs in which the V-shaped grooves face each other. It consists of upper and lower log layers arranged in such a way that the center of the V-shaped groove of the lower layer of logs is located below adjacent to the upper layer of logs, and the slope of the upper layer of logs and the slope of the lower layer of logs are located below. The surfaces are arranged so that they are in close contact with each other.

Hereinafter, embodiments of this invention will be described with reference to the drawings. FIG. 1 shows a wooden building having a roof structure according to this invention, in which a plurality of crosspieces 11 are provided on the upper part of an eave girder 10 spanning over pillars 1, and a roof 2 is formed on these crosspieces 11. has been done. this roof 2
A large number of logs 21 are formed with outwardly expanding concave portions 20 formed over the entire length thereof, each consisting of a V-shaped groove having a pair of inclined surfaces having the same width and inclination angle.
The roof main body 22 is made up of rows of roof main bodies 22 and a ridge part 23 formed on the upper part of the roof main body 22. As shown in FIG. 2, the roof main body 22 consists of upper and lower log layers 24 and 25 arranged so that the recessed portions 20 and 20 face each other. lower layer 2
The logs 21, 21 of the upper and lower layers 24, 25 are arranged so that the center of the log recess 20 of No.
The sloped surfaces of the recessed portions are configured to be joined in close contact with each other. Further, at the side end portions of the lower layer 25, dividing pieces 26 made by dividing the log material 21 into left and right sides are arranged in order to align the side end surfaces of the roof main body 22. Note that this divided piece 26 is attached to the upper layer 24.
It is also possible to have a structure arranged at the side end of the.

In addition, in order to make the size of each of the logs 21 uniform in the width direction and to minimize the gap between the left and right adjacent logs 21, 21, the side edges of the logs 21 may be It has been cut off like this. The log material 21 and the divided pieces 26 are fixed to the crosspiece 11 by screws made of stainless steel or the like, and the log material 21 and the like are impregnated in advance with a chemical solution such as a preservative and an insect repellent.

As shown in FIG. 3, lining materials 27, 27 are fixed to the upper end of the roof main body 22, and
A ridge portion 23 is formed by placing a large ridge 28 on top of the ridge portion 28 .

Furthermore, a wall 3 is formed between the pillars 1 and 1 by stacking a large number of logs 30 vertically. In this embodiment, as shown in FIG. 1, each log 30 is placed in a state in which a convex part 31 formed on the upper part of the log 30 is fitted into a recess 32 formed in the lower part of the upper log 30. The logs 30 and 30 are connected to each other, and the upper and lower logs 30 are overlapped with each other in this portion to prevent wind and rain from entering. Note that this wall structure is not limited to the above embodiment, and various modifications are possible.

The wooden building constructed as described above consists of two logs
The roof body 22 has a log cabin-like roof body 22 made of 1, and can effectively prevent rainwater from entering. That is, since the roof main body 22 is configured in such a state that the center of the recessed part 20 of the log material 21 of the lower layer 25 having a V-shaped cross section is arranged below the adjacent log materials 21, 21 of the upper layer 24,
Rainwater that has entered between the logs 21 and 21 in the upper layer 24 flows down the center of the log recess 20 in the lower layer 25 and is discharged to the outside. Therefore, without providing a special barrier etc. below the roof main body 22,
A simple structure can prevent rainwater from entering,
And on humid days, between logs 21 and 21
The space between the logs 21 is narrowed to prevent rainwater and moisture from entering, and on dry days, the space between the logs 21 is widened to provide adequate ventilation. In addition, the log materials 21 and 21 of the upper and lower layers 24 and 25
A recessed portion 2 having an equal width and an equal inclination angle formed in
Since the inclined surfaces of 0 and 20 are joined and assembled in close contact with each other, stability is good, assembly work can be performed easily, and a strong connection state can be obtained. In addition, in the example shown, the upper and lower layers 2
As log materials 21, 21 constituting 4, 25,
Since members having substantially the same shape are used, there is an advantage that mass production is possible and manufacturing is possible at low cost.

Note that in order to more reliably prevent rainwater from entering the interior through the joint between the upper and lower layers 24 and 25, it is desirable to make the inclination angle θ of the log recess 20 as small as possible. If it is too small, it will be difficult to process, so the above inclination angle θ is 130
degree is appropriate. In addition, in order to prevent wind from entering, it is desirable that the concave portion 20 of the log material 21 be smoothed by planing or the like so that the joint portions are brought into tight contact. However, if the distance between the joints is extremely small, rainwater that has entered between the logs 21 and 21 of the upper layer 24 rises between the joints due to capillary action, and then rises between the logs 21 and 21 of the upper layer 24. There is a possibility that it may penetrate into the interior through the gap between the logs 21, 21. Therefore, it is desirable to prevent the capillary phenomenon by providing a groove 29 at the center of the concave portion of the log material 21' of the lower layer 25, as shown in FIG. In addition, when this groove 29 is provided, the log material 2 of the upper layer 24
Rainwater that has entered between 1 and 21 can be more effectively discharged to the outside. Note that the recessed portion 20 of the log material 21 does not necessarily have to be formed into a precise V-shape in cross section, but is generally V-shaped with horizontal surfaces at the center and both end portions of the recessed portion 20', as shown in FIG. Various modifications are possible, such as forming it into a groove.

As explained above, this idea has a simple structure that prevents rainwater from entering, and that allows for appropriate changes in breathability in response to changes in humidity.Moreover, it is easy to assemble and maintains a strong connection. This has the advantage that the following can be obtained.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of this invention;
3 and 3 are sectional views showing the structure of the roof, and FIGS. 4 and 5 are sectional views showing other embodiments of the roof body, respectively. 20, 20'... recessed part (V-shaped groove), 21, 2
1'...Log material, 22...Roof body, 24...Upper layer, 25...Lower layer.

Claims (1)

[Scope of utility model registration request] A roof main body is formed of a large number of logs in which V-shaped grooves with a pair of inclined surfaces having the same width and inclination angle are formed, and this roof main body has upper and lower logs arranged so that the above-mentioned V-shaped grooves face each other. The center of the V-shaped groove of the lower layer of logs is located below adjacent to the upper layer of logs, and the sloped surface of the upper layer of logs and the slope of the lower layer of logs are in close contact with each other. The roof structure of a wooden building is characterized by its arrangement.