JPS6143847Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a fastening method that can easily and reliably join two members arranged in a T-shape, such as columns and beams of a wooden building, or beams and beams. It provides metal fittings.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. The tightening fitting of the present invention will be explained as follows.
A through hole 2 that crosses a first member to be joined (for example, a column) 1 and a second member to be joined (for example, a beam) 3 that extends from the end thereof in a T-shape with respect to the member to be joined 1. a tightening rod 5 inserted across the insertion hole 4 provided in the horizontal direction; a washer 6 provided at one end of the tightening rod 5 and abutting the outside of the first member to be coupled 1; A screw type or wedge provided at the other end of the tightening rod 5 so as to contact the inner surface 7a of the recessed hole 7 provided in the second member 3 to be joined while being connected to the end of the hole 4. It consists of a tightening means 8 of the type.

The washer 6 is provided with a hemispherical recessed portion 9,
A through hole 10 having a diameter larger than the diameter of the tightening rod 5 is provided at the bottom of the hemispherical recess 9.
Reference numeral 11 denotes a head formed at the outer end of the tightening rod 5 so as to fit loosely into the hemispherical recess 9, and includes a spherical surface 12 that makes surface contact with the inner surface of the hemispherical recess 9. There is. The tightening means 8 includes a nut 14 that is screwed into a threaded shaft portion 13 formed at the inner end of the tightening rod 5, and the nut 14 is perpendicularly bored from one side of the second member 3 to be coupled. An arcuate plate 15 is integrally provided in surface contact with the arcuate inner surface 7a of the cylindrical recessed hole 7. 16 is a hexagonal hole for rotation operation formed on the outer surface of the head 11. Reference numeral 17 denotes a recessed hole provided in the first member 1 to be coupled, into which the hemispherical recessed portion 9 of the washer 6 is loosely fitted.

As shown in the figure, the tightening rod 5 with the washer 6 fitted to the head 11 is inserted into the insertion hole 4 of the second member 3 from the through hole 2 of the first member 1 to be joined, and the recessed hole 7 In order to screw the inner end threaded shaft portion 13 of the tightening rod 5 into the nut 14 loosely fitted therein, the tightening rod 5 is rotated with a wrench or the like fitted into the hexagonal hole 16, thereby removing the arc-shaped plate of the nut 14. 15 into recessed hole 7
The washer 6 is pressed against the arcuate inner surface 7a of the
is pressed against the outer surface of the first member 1 to be joined, and the first member 1 to be joined is pressed between the washer 6 and the nut 14.
and the second member to be coupled 3 can be fastened in a T-shape.

According to the fastening fitting according to the present invention as shown in the above embodiments, two members to be joined, such as a column and a beam or a beam and a beam in a wooden building, can be easily and easily connected in a T-shape. However, in particular, the tightening rod 5 passes through the through hole 10 of the washer 6, and has a spherical surface 12 that is received by the head 11 provided at the end of the tightening rod 5 around the through hole 10 of the washer 6. Since the tightening rod 5 is configured to be able to swing relative to the washer 6 with the center of the spherical surface 12 as the center of swing, the tightening rod insertion hole consisting of the through hole 2 and the insertion hole 4, for example. The direction is not perpendicular to the outer surface of the first coupled member 1,
Even if the washer 6 is slightly inclined, the washer 6 can be brought into surface contact reliably and automatically with the outer surface of the first member 1 to be joined without diagonally digging into it, resulting in highly secure fastening. structure can be obtained.

Further, the washer 6 is attached to the outer surface of the first member 1 to be coupled.
When providing a counterbore hole for embedding, even if the bottom surface of the counterbore hole is inclined with respect to the outer surface of the member 1 to be joined due to a machining error, the washer 6 is automatically placed on the inclined bottom surface of the counterbore hole. A highly safe fastening structure can be obtained by making contact with each other.

In the embodiment shown in FIGS. 1 and 2, a recessed hole 17 into which the hemispherical recessed portion 9 of the washer 6 is loosely fitted is required, but as shown in FIG.
If the hemispherical recessed portion 9 is configured to be located at a higher position than a, the member 1 to be coupled with which this washer 6 abuts
There is no need to provide the recessed hole 17 in the hole 17, and work efficiency is improved.

Furthermore, although a screw-type tightening device using a nut 14 is shown as the tightening means 8, it may be a wedge-type tightening device in which a wedge is driven into a wedge hole provided in the tightening rod 5. Even with this wedge-type tightening means,
It is preferable that a contact plate that abuts the arcuate inner surface 7a of the recessed hole 7 is fitted onto the tightening rod 5, and the wedge is in pressure contact with the outer surface of this contact plate.

When using a nut as the tightening means 8,
As shown in FIGS. 4 and 5, the arc-shaped plate 15
By using a nut 14 having a lug-shaped tightening rod tip guide portion 20 between the short cylindrical portion 19 forming the female threaded hole 18, the recessed hole 7
Insert the screw shaft 13 of the tightening rod 5 into the nut 1.
Not only can the nut 14 be easily screwed into the female screw hole 18 of No. 4, but the nut 14 can be manufactured at low cost by press working of a metal plate. Furthermore, when a nut is used as the tightening means 8, a leaf spring 21 which is compressed between it and the arcuate inner surface 7a of the recessed hole 7 is used together, as shown by imaginary lines in FIGS. 4 and 5, respectively. By doing so, even if the wooden members 1 and 3 to be joined shrink somewhat due to drying, the fastened state can be maintained well due to the elastic reaction force of the leaf spring 21. It is desirable that the leaf spring 21 be coupled to the arcuate plate 15 by having its left and right sides engaged with the left and right sides of the arcuate plate 15 .

[Brief explanation of drawings]

Figure 1 is a vertical side view, Figure 2 is a plan view, Figure 3 is a vertical side view of the main part showing a modified example, Figure 4 is an enlarged vertical side view of the nut, and Figure 5 is a cross-sectional plan view of the same. be. DESCRIPTION OF SYMBOLS 1...First member to be connected (e.g. column), 2...Through hole, 3...Second member to be connected (e.g. beam), 4...Insertion hole, 5...Tightening rod, 6...Washer, 7, 17...Concave Inlet hole, 8... Tightening means, 9... Hemispherical recessed part, 1
0... Through hole, 11... Head, 12... Spherical surface, 13... Screw shaft, 14... Nut, 15... Arc-shaped plate, 21
...Leaf spring.

Claims (1)

[Scope of utility model registration request] A through hole that traverses the first member to be joined and an insertion hole that is provided in the length direction from the end of the second member that is arranged in a T-shape with respect to the member to be joined. A tightening rod to be inserted, a washer provided at one end of the tightening rod and abutting the outside of the first coupled member, and a washer provided on the second coupled member in a state connected to an end of the insertion hole. a screw-type or wedge-type tightening means provided at the other end of the tightening rod so as to come into contact with the side surface of the recessed hole, the tightening rod passing through the through hole of the washer, A wooden construction in which a head provided at the end of the rod is provided with a spherical surface that is received around the through hole of the washer, and the tightening rod can swing relative to the washer with the center of the spherical surface as a swing center. Fastening fittings for use.