JPH08312007A - Joining structure between column and beam in wooden framework and joining hardware - Google Patents

Abstract

PURPOSE: To eliminate the need for complicated machining of a connection part between a column and a beam, and to enable the above connection part to bear large shearing force, and moreover to improve its outside appearance. CONSTITUTION: A U-shaped hardware 1 is fixed to a column 3 through a bolt 5 and a tenon grove 10 on the side of the column 3, and the parallel pieces 6, 6, of the hardware 1 are inserted in a slit 13 on the end face of a beam 12 and fixed with a pin 8. In addition to that, shearing force in the beam 12 is borne by a supporting plate 9 at the lower end of the hardware 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a column and a beam in a wooden frame and a joint metal piece therefor.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional wooden construction method is used to join a through column and a beam (body difference) by using a partly inserted short tenon mortise and a strip of metal with the joint part processed into a special shape. There is. Generally, a carpenter works on-site to process the joint portion, but recently, a pre-cut process has been performed in a factory in advance using a dedicated machine called a router. This pre-cut is characterized in that the joint portion is rounded as shown in FIG. 5 due to the nature of the machine.

[0003]

By the way, when a shearing force is transmitted from a beam to a column, a force acts on the column in the fiber direction of the wood, and a force acts on the beam in a direction orthogonal to the fiber direction.
In this case, the wood is strong against the fiber direction,
Since there is a weak property in the orthogonal direction, it is necessary to increase the cross-sectional area of the tenon of the beam to secure the supporting force for shearing force. Therefore, the mortise of the pillar must be enlarged,
There is a drawback that the strength on the column side is reduced due to the large cross-section loss.

In addition, the processing of the joint requires skill and requires a specialized carpenter, and in the case of precutting, a dedicated processing machine is required. Furthermore, when using a strip of metal as described above, in the case of a building with a structure in which the joint is exposed,
There is a defect that the strip metal objects and nails are visible and the appearance is impaired.

The present invention eliminates the above-mentioned conventional drawbacks, does not require complicated processing of the joint portion of the column and the beam, can bear a large shearing force, and is excellent in appearance. The purpose is to provide a joint structure and its hardware.

[0006]

In order to solve the above-mentioned problems, the joining structure of the present invention is such that the end on one side of the center of the metal body formed in a substantially U-shape or a U-shape when viewed from above. While being inserted into the shallow mortise groove on the side of the column and fixed with bolts, a pair of parallel pieces of the metal body were inserted into the slit formed in the end face of the beam and then inserted from the side face of the beam. The metal body and the beam are fixed to each other by an elongated stopper such as a pin, and the support plate at the lower end of the metal body further supports the beam from below.

Similarly, the metal joint of the present invention is formed in a generally U-shape or a U-shape when viewed from above, and the end portion is inserted into the tenon groove of the pillar on one side of the center thereof, and the pieces facing each other are formed. It consists of a metal body that is to be inserted into the slit of the beam end face and a support plate that is provided at the lower end of the metal body and supports the beam from below. An insertion hole for a stopper such as a pin for fixing the main body and the beam to each other is provided.

In the above description, the beam also includes what is called a body difference.

[0009]

In the above structure, the mortise groove is formed on the side surface of the column, but the mortise groove itself is shallow, so that the column does not have a large cross-section loss. Further, the shearing force is transmitted from the beam to the column through the support plate at the lower end of the metal object and the metal object and the bolt. Further, since the metal body is inserted into the slit of the beam between the pillar and the beam, the support plate at the lower end can be seen from the outside without impairing the appearance.

[0010]

1 to 3 showing an embodiment of the present invention, (1) is a metal body which is formed by bending a metal plate into a substantially U-shape or U-shape when viewed from a plane. The central body (2) of the main body (1) is passed through the metal body (1) to form a pillar.
Bolt hole (4) for fixing to (3) is formed
(See Figure 2). (5) (5) ... shows the bolts therefor. Also, a pair of parallel pieces that are continuous with the central piece (2)
At (6) and (6), a plurality of pin insertion holes (7), (7), ... Are formed at intervals in the vertical direction at the tip portion thereof. (8), (8) ... Are drift pins that are inserted and driven into these pin insertion holes (7). Furthermore, the hardware body (1)
A support plate (9) is previously welded to the lower end surface of the support plate (9), and the left and right ends of the support plate (9) project outward from the metal body (1).

A shallow mortise groove (10) into which the end on the side of the central piece (2) is inserted is formed on the side surface of the pillar (3).
In the (10) part, bolt holes (11) and (11) that penetrate the pillar (3)
Are formed corresponding to the bolt holes (4) (4) of the central piece (2). Further, the end portion on the side of the central piece (2) projects beyond the support plate (9) by the depth of the mortise groove (10) so that the support plate (9) does not buffer.

The body difference (12) as a beam of the present invention has slits (13) (13) extending from the end face on the joining side to a depth substantially the same as the length of the pair of pieces (6) (6). Pilot holes (14), (14) ... For inserting pins are formed from the side surface so as to penetrate through the slits (13, 13). (15) is
This is a stepped portion for allowing the lower surface of the support plate (9) and the lower surface of the body difference (12) to be flush when the body difference (12) is placed on the support plate (9).

Explaining the joining method using the above hardware, first, the end of the metal body (1) on the side of the central piece (2) is replaced by the end of the metal body (1) on the side of the central piece (2). Through post (3) mortise groove (1
(0) and bolt from inside the metal body (1).
(5) Insert (5) ... into the bolt hole (4) of the central piece (2) and the bolt hole (11) of the through column (3) to penetrate the rear surface side. Further, on this back side, a washer plate (16) having a U-shaped cross section is inserted into the tenon groove (10) formed on the back side so as to fit into the tenon groove (10). Insert the bolt (5) into the bolt hole of the plate (16), tighten it with the nut (17), and insert the metal body (1) through the pillar (3).
Fixed to.

Then, to the slits (13) (13) of the body difference (12),
The pieces (6) (6) of the metal body (1) fixed as described above are installed so as to be inserted, and in this state, the stepped portion (15) of the lower surface of the barrel difference (12) is supported by the support plate (9). ) Place on top. When the slit (13) and the pieces (6) and (6) are installed in a completely fitted state, the pilot hole (14) of the body difference (12) and the pin insertion hole (7) are aligned with each other. And the drift pin in this state
The body difference (12) is fixed to the metal body (1) side by driving (8) from the outside of the body difference (12) into the prepared hole (14) and the pin insertion hole (7). .

In such a joint structure, the beam or barrel difference (12)
The shearing force from the side is carried by the support plate (9) of the metal joint. In this case, since a shearing force is applied in the direction orthogonal to the fibers of the barrel difference (12), a large force is required for this support. This requires the area of the support plate (9) to be, for example, the barrel difference (1
It can be surely supported by expanding it to the full width of 2).

The shearing force transmitted to the supporting metal as described above causes the bolt (5) fixing the metal body (1) and the mortise (1).
0) and is transmitted to the through pillar (3) side. In this case, since the through-column (3) has a shearing force in the same direction as that of the fiber, the tenon groove (10) may have a shallow depth, and as described above, the shearing force of the barrel difference (12) does not occur. Since it is reliably supported by the support plate (9), a large cross-section loss does not occur on the side of the through column (3).

Further, due to the shearing force acting on the barrel difference (12), a moment to rotate the entire metal object is generated,
Since the metal body (1) and the body difference (12) are connected by the drift pin (8), the drift pin (8) can bear the moment.

[0018]

As described above, according to the present invention, the joint portion of the joint portion between the column and the beam is joined with a dedicated metal object and bolts and pins, and the shearing force acting on the body difference is the metal object. You will be able to support the part reliably. Further, since the shearing force transmitted from the metal object to the pillar acts in the same direction as the fiber direction of the pillar, the mortise groove into which the metal object is inserted can be made shallow, and the cross-section loss of the pillar can be reduced, It is possible to prevent the decrease in the strength of the column. Moreover, it is possible to obtain an effect that a complicated carving such as a conventional joint is not necessary and a specialized carpenter for processing and a dedicated processing machine are not required. Moreover, the assembly at the site is easy to understand, and the work can be performed in a short time.

Further, in the metal body, the opposite pieces thereof are inserted into the slits of the beam, and the central portion is interposed between the end face of the beam and the side face of the column. Only the end face of is exposed and the appearance is good. Therefore, it is possible to provide an excellent design, especially in a building having a structure in which this connection portion is exposed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a joint portion between a column and a body difference showing an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the same joined state.

FIG. 3 is a vertical side view of the same joined state.

FIG. 4 is a perspective view showing a structure of a joint portion between a column and a beam in the conventional method.

FIG. 5 is a perspective view showing a structure of a joint portion of a beam processed by precut processing.

[Explanation of symbols]

 (1) Hardware body (2) Central piece of hardware body (3) Through post (5) Bolt (7) Pin insertion hole (8) Drift pin (9) Support plate (10) Mortise groove (12) Body difference (beam) (13) Slit

Claims (2)

[Claims] 1. An end on one side of the center of a metal body formed in a generally U-shape or a U-shape when viewed from a plane is fixed by a bolt while being inserted into a shallow mortise groove on a side surface of a column. , A pair of parallel pieces of the metal body is inserted into a slit formed in the end face of the beam, and the metal body and the beam are fixed to each other with an elongated stopper such as a pin inserted from the side surface of the beam. Further, a joint structure of a column and a beam of a wooden framework, characterized in that the beam is configured to be supported from below by a support plate at the lower end of the metal body. 2. A U-shape or a U-shape when viewed from a plane, the end of one side of the center of which is inserted into the mortise groove of the column, and the pieces facing each other are inserted into the slits of the beam end surface. And a support plate that is provided at the lower end of the hardware body and supports the beam from below.
Similarly, a joining piece for a pillar and a beam of a wooden framework, wherein insertion holes for fasteners such as pins for fixing the fitting body and the beam to each other are provided in the pieces facing each other.