JP2544778Y2 - Wood joints - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a joint of wood. More specifically, the present invention relates to a joint portion of wood, such as a joint connection formed on a joint surface, for joining wood to each other.

[0002]

2. Description of the Related Art As a conventional joint port, a joint port which is combined by combining a male port shown in FIG. 9 and a female port shown in FIG. 10 is known. In this conventional example, the male connection 101 is composed of a primary convex portion 102 formed and projected in a U-shape, and a secondary convex portion protrudingly provided on the primary convex portion 102. The lower surface of the primary convex portion has a planar shape, while the secondary convex portion has a so-called dovetail structure, that is, the lower surface of the secondary convex portion rises toward the base.

The female connection 201 has a primary recess 202 into which the primary projection 102 of the male connection 101 is fitted, and a male connection 1
01 and a secondary concave portion into which the secondary convex portion 103 is fitted. The lower surface of the primary concave portion 202 has a planar shape, while the lower surface of the secondary concave portion 203 is configured to be shallower toward the surface. for that reason,
When the primary convex portion 102 and the primary concave portion 202 are fitted and the secondary convex portion 103 and the secondary concave portion 203 are fitted, the primary convex portion 10
The weight of 2 is supported by the planar portion of the primary concave portion 202, and the movement in the horizontal direction is prevented by the dovetail structure that locks the secondary convex portion 103 and the secondary convex portion 203.

Further, in the embodiment shown in FIGS. 9 and 10, without providing the secondary convex portion 103 and the secondary concave portion 203,
A conventional example in which a so-called dovetail structure is provided in the primary convex portion 102 and the primary convex portion 202 is also known.

[0005]

However, in the conventional example, since the unevenness is formed in two steps, there is a problem that the cross-sectional defect becomes large. In particular, as shown in FIG. 11, when beams are combined in a cross shape and columns are set up at intersections, only a slight width remains because concave portions are formed from both surfaces. Therefore, there was a problem that it was necessary to use thick wood. Further, it takes a long processing time to form the uneven portion in two steps, and the process of forming the secondary convex portion 103
There is a problem that an accident that damages the 03 may occur.

[0006] In the case where the uneven portion having a so-called dovetail structure is provided in one step, there is a problem that the strength is inferior because a load is applied by the dovetail structure which is an inclined surface.

[0007]

[Means for Solving the Problems]

One of the joining surfaces, which is formed by a substantially U-shaped convex portion having a U-shaped opening directed downward from the wood, is formed such that the lower surface of the outer surface of the U-shaped convex portion is parallel to the lower surface of the wood. It has a flat-shaped portion, and the inner peripheral surface of the concave opening of the U-shaped convex portion has a slope in which the width of the concave opening becomes wider as going from the joining end surface to the deep side of the concave opening, The other joining surface composed of a substantially U-shaped concave portion having a substantially U-shape facing downward of the wood has a planar portion in which the lower surface of the inner peripheral surface of the U-shaped concave portion is parallel to the lower surface of the wood, And a joint portion of wood, wherein the outer peripheral surface of the convex opening portion of the U-shaped concave portion has a slope in which the width of the convex opening portion becomes narrower as going from the joint end surface to the inner side of the U-shaped concave portion.

Is provided.

[0010]

The one joint surface of the U-shaped convex portion is fitted from above into the other joint surface of the U-shaped concave portion. The load on one joint surface side is such that both lower surfaces having a flat portion of the convex outer peripheral surface of the U-shaped convex portion have both flat surfaces of the concave inner peripheral surface of the U-shaped concave portion of the other joint surface. It is supported in contact with the lower surface.

An inner peripheral surface of a concave opening formed on a slope provided on one of the joining surfaces of the U-shaped convex portion, the width of the concave opening becoming wider toward the inner side of the concave opening of the U-shaped convex portion; The width of the convex opening is narrower as it goes toward the deeper side of the U-shaped concave provided on the other joint surface of the convex concave and the outer peripheral surface of the convex opening formed of a slope that becomes narrower in the horizontal direction. Movement is regulated.

[0012]

FIG. 1 is a perspective view of one joint surface of an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, FIG. 4 is a side view thereof, and FIG. FIG. 5 showing a perspective view of the surface, FIG. 6 showing the same plan view,
The description will be made with reference to FIG. 7 showing the front view and FIG. 8 showing the side view.

Reference numeral 11 denotes one joint surface. One joint surface 11 is formed of a male connection. 12 is a U-shaped convex portion.
The U-shaped convex portion 12 is a substantially U-shaped convex portion as viewed from the front, with the concave opening corresponding to the U-shaped opening facing downward from the periphery of the joint surface. The two lower surfaces 13 of the convex portion peripheral surface of the U-shaped convex portion 12 are lower surfaces having a flat portion parallel to the lower surface of the wood, and both outer surfaces 13 of the convex portion of the U-shaped convex portion 12 are also made of wood. This is a side surface having a planar portion parallel to the side surface. The inner peripheral surface 14 of the concave opening portion of the U-shaped convex portion 12 is formed by a slope in which the interval between the widths of the concave opening portions becomes wider and deeper from the joint end surface toward the back side, that is, toward the deep side of the concave opening portion.

Reference numeral 21 denotes the other joining surface. The other joint surface 21 is a female connection in this embodiment. 22 is a U-shaped concave portion. The U-shaped concave portion 22 is a concave portion having a substantially U-shape in a front view with a convex opening corresponding to the U-shaped opening facing downward. Two lower surfaces 2 of the concave surface of the U-shaped concave portion 22
Reference numeral 3 denotes a lower surface having a planar portion parallel to the lower surface of the wood, and inner side surfaces 23 on both sides of the concave portion of the U-shaped concave portion 22 are side surfaces having a planar portion parallel to the side surface of the wood. The outer peripheral surface 24 of the convex opening of the U-shaped concave portion 22 is formed such that the distance between the widths of the convex opening becomes narrower and narrower as it goes from the joint end surface to the deeper side of the U-shaped concave, that is, toward the base of the convex opening. Slope is provided.

The U-shaped convex portion 12 of one joining surface 11 is fitted from above into the U-shaped concave portion 22 of the other joining surface 21. The load on the one joint surface 11 side, which is a male connection, is applied to both lower surfaces 13 of the convex peripheral surface of the U-shaped convex portion 12 having a planar portion.
Is a U-shaped concave portion 22 of the other joint surface 21 which is a female connection.
Are supported by contacting both lower surfaces 23 of the inner peripheral surface of the concave portion having the flat portion.

The inclined inner peripheral surface 14 of the concave opening of the U-shaped convex portion 12 provided on one joint surface 11 and the convex opening of the U-shaped concave portion 22 provided on the other joint surface 21 are provided. Since the slopes abut and fit by contacting and fitting with the sloped outer peripheral surface 24 of the portion, horizontal movement is restricted.

[0017]

[Effects of the Invention] The present invention provides a joint portion of wood having excellent strength, which enables use of thin wood having a small cross-sectional defect.

[Brief description of the drawings]

FIG. 1 is a perspective view of one joint surface of an embodiment of the present invention.

FIG. 2 is a plan view of one joint surface of the embodiment of the present invention.

FIG. 3 is a front view of one joint surface of the embodiment of the present invention.

FIG. 4 is a side view of one joint surface of the embodiment of the present invention.

FIG. 5 is a perspective view of the other joint surface of the embodiment of the present invention.

FIG. 6 is a plan view of the other joint surface of the embodiment of the present invention.

FIG. 7 is a front view of the other joint surface of the embodiment of the present invention.

FIG. 8 is a side view of one joint surface of the embodiment of the present invention.

FIG. 9 is a perspective view of one joining surface of a conventional example.

FIG. 10 is a perspective view of the other joining surface of the conventional example.

[Explanation of symbols]

 11 One joining surface (male connection) 12 U-shaped convex portion 13 Both lower surface and both outer surfaces of U-shaped convex portion 14 Inner peripheral surface of concave opening of U-shaped convex portion 21 The other joining surface (female connection) 22) U-shaped concave part 23 Both lower surface and both inner side surfaces of U-shaped concave part 24 Convex opening outer peripheral surface of U-shaped concave part

Claims (1)

(57) [Scope of request for utility model registration] 1. One of the joining surfaces composed of a substantially U-shaped convex portion having a U-shaped opening portion directed downward from the wood, the lower surface of the U-shaped convex portion outer peripheral surface is in contact with the lower surface of the wood. It has a parallel planar portion, and is formed of a slope in which the width of the concave opening becomes wider as the inner peripheral surface of the concave opening of the U-shaped convex portion goes from the joint end surface to the deep side of the concave opening, The other joining surface, which is formed by a U-shaped concave portion having a substantially U-shape in a front view with the opening portion directed downward of the wood, has a flat portion in which the lower surface of the inner peripheral surface of the U-shaped concave portion is parallel to the lower surface of the wood. And joining the timber, wherein the outer peripheral surface of the convex opening of the U-shaped concave portion has a slope in which the width of the convex opening portion becomes narrower as going from the joint end surface to the far side of the U-shaped concave portion. Department.