KR-20260062877-A - Bevel joint device for wooden structures

KR20260062877AKR 20260062877 AKR20260062877 AKR 20260062877AKR-20260062877-A

Abstract

The present invention relates to a mortise and tenon joint device for a wooden building that enables a vertical wooden column and a beam connected in all directions to be detachably joined. The present invention comprises a joining device for joining a wooden column arranged in the upper and lower directions and a wooden beam arranged horizontally, comprising: a fastening steel box formed of a steel pipe with a square cross-section so as to be inserted into the central square portion of a mortise groove formed by cutting a cross shape at the top of the lower wooden column, wherein the bottom surface is open and the top surface is closed, and an upper through-hole is formed in the center of the top surface; a vertical steel pipe positioned through the upper through-hole of the fastening steel box, wherein the end is inserted into a steel pipe groove formed in the longitudinal direction of the wooden column at the center of the wooden column joining surface, and pinholes are formed at the top and bottom ends; and a drift pin that passes through a horizontal hole formed in the horizontal direction of the wooden column and the pinhole of the vertical steel pipe to fix the vertical steel pipe to the wooden column. According to the present invention, since the shear generated at the joint jaw portion is shared and borne by the joint screw, the shear force can be withstood even with a small mortise jaw, thereby providing the effect of minimizing the defect in the column.

Inventors

이주나

Assignees

서울시립대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20251028
Priority Date: 20241028

Claims (9)

In a joining device for joining a wooden column arranged vertically and a wooden beam arranged horizontally, A fastening steel box formed of a square cross-section steel pipe to be inserted into the central square portion of a mortise groove formed by a cross-shaped cut at the top of a lower wooden column, with the bottom surface open and the top surface closed, and an upper through hole formed in the center of the top surface; A vertical steel pipe positioned through the upper through-hole of the above-mentioned fastening steel box, with one end inserted into a steel pipe groove formed along the longitudinal direction of the wooden column at the center of the wooden column joint surface, and pinholes formed at the upper and lower ends; A mortise and tenon joint device for a wooden building, characterized by comprising: a drift pin that passes through a horizontal hole formed horizontally in the wooden column and a pin hole in the vertical steel pipe to fix the vertical steel pipe to the wooden column.
In Article 1, The above pinhole is, A mortise and tenon joint device for a wooden structure characterized by a cross hole where two mutually perpendicular holes intersect.
In Article 2, A mortise and tenon joint device for a wooden building, characterized in that an insertion groove with a square cross-section is formed at the lower end of the central square portion of the mortise and tenon groove of the lower wooden column, and the lower end of the fastening steel box is inserted into the insertion groove and fixed.
In Paragraph 3, On the upper surface of the above fastening steel box, A mortise and tenon joint device for a wooden structure characterized by having a cushioning pad formed of an elastic member.
In any one of paragraphs 1 to 4, At the lower part of the outer surface of the above-mentioned fastening steel box, the side of the fastening steel box is cut vertically upward from the bottom surface to form a side slot: A connecting screw fixed to the side surface of the stepped portion of a wooden beam formed at the connecting end, with the other end extending and protruding, and a stepped portion that is mortise and tenonically connected to the side portion of the above-mentioned mortise groove; A mortise and tenon joint device for a wooden building, characterized by further comprising a coupling nut that is coupled to the other side protrusion of the coupling screw and inserted into the side slot to restrict the horizontal movement of the coupling screw.
In Article 5, At the bottom of the above fastening steel box, A mortise and tenon joint device for a wooden building, characterized by having a plurality of tension reinforcing bars connecting opposing side sections to prevent bending of the opening side.
In Article 5, The above connecting screw is, A mortise and tenon joint device for a wooden building, characterized by having a screw thread formed on one outer surface, wherein the coupling nut is screw-coupled with the coupling screw to adjust the coupling position.
In Article 5, The above connecting nut is, A mortise and tenon joint device for a wooden structure, characterized by being a groove nut having a joining groove formed with a depth corresponding to the width of the side slot.
In Article 5, The above connecting nut is, A mortise and tenon joint device for a wooden structure, characterized by being composed of two double nuts, with the side slot inserted between the two nuts.

Description

Bevel joint device for wooden structures The present invention relates to a joining device for mortise and tenon joints of wooden columns and beams, and more specifically, to a mortise and tenon joint joining device for wooden buildings that enables a vertical wooden column and a beam connected in all directions to be detachably joined. While it is common practice to construct various modern buildings using reinforced concrete, masonry, and steel frames, wooden structures are recently being built using traditional methods or modern modifications. In particular, buildings utilizing wood are gaining popularity due to public awareness of well-being and the impact of sick building syndrome. In addition, wood is widely used for constructing structures such as bridges and gazebos in tourist areas and parks to harmonize with nature and enhance aesthetics, and its usage is on the rise. Meanwhile, laminated timber is used along with large-diameter timber for structural purposes. Laminated timber is manufactured by bonding small pieces of timber together to form large timbers of desired lengths, which provides high dimensional stability and structural reliability. It is also manufactured by eliminating defects unique to wood, such as knots, allowing for greater strength than ordinary timber. Furthermore, the length, thickness, and width can be adjusted according to the intended use, and it exhibits significantly less warping and cracking compared to solid wood. It is widely used as structural columns and beams and was created to replace large-diameter timber, which is expensive and difficult to obtain. However, such wood fundamentally has size limitations, making it difficult to apply to high-rise structures or composite buildings. Meanwhile, the modular system is an innovative construction method in which modules are manufactured in a factory and assembled on-site. Because it is produced using a dry construction method, all-weather construction is possible, and it facilitates resource reuse and easy expansion or renovation using unit modules. While existing modular systems have primarily been constructed using steel or concrete, interest in wood-based buildings is growing due to carbon reduction efforts and the development and dissemination of various types of engineered wood. Currently, the thinning season in Korea is nearing its end, and the harvesting season is approaching. To utilize wood—which is essentially a mass of carbon—as high-value timber and for long-term carbon storage, it must be actively utilized as a construction material, and demand must be stimulated. In addition, the biggest advantages of the modular system are construction time and cost-effectiveness. While it has the advantage of being excellent in terms of cost-effectiveness because it can reduce construction time to one-third and drastically lower construction costs, as well as allow for reuse, there is a prerequisite that the connection structure of the wooden columns and beams constituting the basic frame must be stable and easy to construct in order to build the modular structure using wood. In addition, to maximize the advantages of modular structures using wood, it is required that the connections of wooden columns and beams be easily disassembled and reassembled, and that the wood be protected from damage even during repeated joining. FIG. 1 is an exploded perspective view illustrating a mortise and tenon joint device according to a specific embodiment of the present invention. FIGS. 2 to 4 are exemplary diagrams sequentially illustrating the joining process of a mortise and tenon joint device according to a specific embodiment of the present invention. FIG. 5 is an illustrative diagram showing an embodiment of a fastening steel box constituting a mortise and tenon joint device according to the present invention. FIG. 6 is a cross-sectional view illustrating a specific embodiment of a coupling unit constituting a mortise and tenon joint device according to the present invention. FIG. 7 is a cross-sectional view illustrating another embodiment of a coupling unit constituting a mortise and tenon joint device according to the present invention. FIG. 8 is a cross-sectional view illustrating another embodiment of a coupling unit constituting a mortise and tenon joint device according to the present invention. Hereinafter, a mortise and tenon joint device according to a specific embodiment of the present invention will be examined with reference to the attached drawings. Before proceeding with the explanation, the effects, features, and methods for achieving the present invention will become clear from the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those