JPH0747522Y2 - Beam connection hardware - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a beam-bonding hardware used for connecting wooden beams to each other.

<Prior Art> When joining wooden beams together, as shown in FIG. 3, thick plywood 34 is laminated and adhered to the left and right side surfaces 33a and 33b of the beam 32 of the joining portion 31, and a large number of nails 35 are further attached. A structure of driving and fixing is often used. Instead of using a large number of nails 35, several bolts may be passed through and tightened, but it is preferable to drive a large number of nails to the front surface of the plywood for fixing including adhesion between the plywood and the side surface of the beam. In many cases

<Problems to be Solved by the Invention> However, a structure in which a thick plywood 34 is superposed on and bonded to the joints 31 of the beams 32, and a large number of nails 35 are driven in is troublesome. That is, it is necessary to arrange a large number of nails 35 evenly over the entire surface of the plywood 34 and drive them, and the number of nails is neither too much nor too little. If the distribution of nails is small, the adhesion will be insufficient and an excessive load will be applied to the nails. If there are too many nails,
Although it takes a long time to nail, the bonding strength is not so improved. Therefore, necessary and sufficient nails 35 must be positioned and driven so as to be accurately distributed over the entire surface of the plywood 34, and this positioning and nailing takes time.

An object of the present invention is to provide a beam coupling hardware that does not require such a trouble.

<Means for Solving the Problems> A beam coupling hardware according to the present invention comprises a groove portion composed of a bottom surface in contact with the lower surface and the left and right side surfaces of a longitudinal beam connecting portion of wooden beams, and left and right vertical surfaces, The bottom surface of the groove is divided along the longitudinal direction of the beam, and a side surface of the beam is provided with respect to the connecting flange extending downward from the dividing portion and the left and right vertical surfaces of the groove portion. And a gang nail formed and arranged on the side in contact with.

<Operation> The bottom surface of the beam-bonded metal article having the groove portion opened upward is formed by three surfaces, that is, the left and right vertical surfaces contacting the left and right side surfaces of the joint portion of the beams, and the bottom surface contacting the bottom surface of the joint portion. It is divided into left and right along the direction, and a flange is attached to this divided portion. When the gang nails arranged on the side contacting the side surface of the beam are press-fitted into the left and right side surfaces on the left and right vertical surfaces, the beam members are joined together, and at the same time, the left and right flanges of the split portion of the bottom surface of the groove portion are in contact. Contact and face each other. When this flange is bolted and fixed, the left and right parts of the beam connecting metal object are integrated, and the connecting parts of the beam members are more strongly connected. The flange in this case has a reinforcing effect on the joint between the beams.

<Embodiment> An embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the beam coupling hardware 1 according to the present embodiment has vertical faces 5a, 5b which are in contact with the left and right side faces 4a, 4b of the wooden quadrilateral cross-section beams 2a, 2b of the butt joint type coupling parts 3. And the connecting part 3
Has a groove portion 8 which is bent in a groove shape so as to have a bottom surface 7 in contact with the lower surface 6 of the. The groove portion 8 divides the bottom surface 7 along the longitudinal direction of the beams 2a and 2b, in this case, at the widthwise central portion as shown in FIG. As a result, the groove part divided into left and right
8a, 8b for each divided portion 9a, 9b, downward flange 10a,
Extend 10b. Therefore, the beam coupling hardware 1 including the flanges 10a and 10b, the divided bottom surfaces 7a and 7b, and the left and right vertical surfaces 5a and 5b.
Have the same shape for left and right symmetry. Flange 10a,
A through hole 12 for a bolt 11 connecting the left and right is arranged in 10b.

The beams 2a and 2b are formed on the vertical surfaces 5a and 5b of the left and right groove portions 8a and 8b.
A large number of gang nails 13 are arranged so as to be press-fitted into the left and right side surfaces 4a, 4b of the joint portions 3 of the same person. In this embodiment, the beam coupling hardware 1 is made of a steel plate having a thickness of 3.2 mm, and the flange 1
Triangular ribs are arranged at predetermined intervals on the 0a and 10b portions to reinforce. The gang nail 13 was formed by punching needle-like protrusions from the vertical surfaces 5a and 5b with a press and bending and bending them at right angles.

Left and right vertical surfaces 5a, 5b of the beam-coupled hardware 1 configured as described above
Is applied to the left and right side surfaces 4a and 4b of the joint portions 3 of the beams 2a and 2b, and the gang nail 13 is press-fitted by a press. In this example, the portable hydraulic press was brought into the construction site and the press-fitting was performed.However, when the total length of the beams 2a and 2b after connection is short,
You may carry out this connection at the factory and then carry it to the construction site and bring it in. When the gang nail 13 is press-fitted, the beam coupling hardware 1
The left and right vertical surfaces 5a, 5b are close to each other, and the flanges 10a, 10b are in contact with each other as shown in FIG. This tightens the flanges 10a and 10b with the bolts 11 to integrate the beam coupling hardware 1 that has been divided into left and right.

In addition, when the gang nail 13 is press-fitted, an adhesive is applied to the left and right side surfaces 4a, 4b of the connecting portions 3 of the beams 2a, 2b, and the beams are bonded to the beam connecting metal article 1 to further strengthen the connection. However, in this case, the adhesive must be selected so as to strongly bond the wood and the steel plate for a long period of time. However, the left and right side surfaces 4a, 4b of the connecting portion 3 of the beams 2a, 2b and the vertical surfaces 5a, 5b of the beam connecting hardware 1 are connected.
The plywood of appropriate thickness is inserted between the plywood and the left and right side surfaces 4a and 4b, and the gluing nail 13 is used to press-fit the gang nail 13. Strong adhesion is possible even with agents. The flange of this beam joint hardware 1
After connecting, 10a and 10b act as a very effective reinforcing member for the beam connecting portion 3. That is, it usually functions effectively as a reinforcing member against the tensile force generated on the lower surface side due to the bending stress applied to the beam connecting portion 3.

As described above, according to the present embodiment, by using the beam connecting metal article having a simple structure, the beam can be quickly connected with very little labor. Moreover, since the arrangement of the gang nails is constant, the beam coupling strength is stabilized, there is no individual difference among workers, and the reliability is also improved.

The beam coupling hardware of the present invention can be modified in various ways other than the above embodiment. For example, it is possible to change the tip shape of the gang nail to make it difficult to pull out even if the press fitting depth is shallow, and to further suppress the strength reduction of the beam itself due to the press fitting of the gang nail at the beam joint portion. Alternatively, if a small number of bolts are pierced in the vicinity of the upper edge of the vertical surface of the beam connecting part and the two left and right parts of the beam connecting metal part are connected and integrated even in the upper part, it is possible to further strengthen the joint with the lower flange connecting part. Coupling is possible. Since the bolts in this case are not for connecting the beams,
Only a small number of thin bolts do not affect the bending strength of the beam.

<Effect of the Invention> According to the beam coupling metal fitting of the present invention, the beam can be coupled promptly with very little effort, and the case is strong and stable.

[Brief description of drawings]

FIG. 1 is a perspective view of a joint portion of beam joints using the beam joint metal of one embodiment, FIG. 2 is a side view of the beam joint metal of FIG. 1, and FIG. It is a perspective view of a coupling part. 1 ... Beam connection hardware, 2a, 2b ... Beam, 3 ... Connection part, 4a, 4b ... Left and right side surfaces, 5a, 5b ... Vertical surface, 6 ... Bottom surface, 7a, 7b ... Bottom surface, 8a, 8b ... Dividing part, 1
0a, 10b… flange, 13… gang nail.

Claims (1)

[Scope of utility model registration request] 1. A groove portion comprising a bottom surface in contact with the lower surface and left and right side surfaces of a connecting portion in the longitudinal direction of wooden beams and left and right vertical surfaces, and the bottom surface of the groove portion along the longitudinal direction of the beam. A flange for connection that is divided and extends downward from the divided portion, and a gang nail that is formed and arranged on the side in contact with the side surface of the beam with respect to each of the divided left and right vertical surfaces of the groove portion, A beam-bonded metal fitting that is characterized by being provided.