JPS6354848B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in joint plates for frame members used to connect frame members forming the skeleton of buildings, such as beams and columns.

The joint plate currently generally used to connect frame members is made up of a pair of substrates on both sides with through holes drilled to correspond to the bolt insertion holes provided at each connection part of a pair of frame members. configured. Therefore, at a construction site, each board is applied from both sides to a pair of frame members placed in opposition to each other, and after aligning the through holes with the bolt insertion holes, separately prepared bolts are inserted into both holes. The frame members are connected by inserting them and tightening them with nuts.

However, in the conventional work described above, since the bolts are not fixed to the board, the bolts rotate together when tightening the nuts, making it impossible to proceed with the tightening work smoothly, resulting in inefficiency. One possible solution to this problem is to use square bolts and a joint plate with square holes drilled in the board.
There is a problem in that the cost of the bolt itself increases and the processing cost of the board increases. Moreover, even when using the bolt and board described above, the operator must hold the bolt head with one hand to prevent the bolts from rotating together during tightening work, while operating a tool such as a spanner with the other hand. Therefore, the drawback remains that it is difficult to increase work efficiency.

Another solution to the original problem of the conventional example is to use a special fastening tool to prevent the bolt and nut from rotating together; There are disadvantages in that this increases the fatigue of the worker, and the smoothness of operation is poor, making it difficult to improve work efficiency.

The connection work of the frame members is carried out at a high place, and moreover, the work of connecting the frame members is carried out at a high place, and moreover,
Considering that the quantity of nuts is enormous, the drawbacks of the above conventional example cannot be overlooked.
Correcting these deficiencies would bring considerable benefits to the industry.

The present invention aims to rectify the drawbacks of the above-mentioned conventional example, and aims at correcting the above-mentioned drawbacks of the conventional example.
a, 2b, bolts 4 arranged so as to correspond to the bolt insertion holes 3 provided in the connecting parts 2a, 2b.
A male plate 5 is provided protruding from the board and is applied to one side of the connection parts 2a, 2b, and a female plate is provided with a circular hole 20 corresponding to the bolt 4 in the board and applied to the other side of the connection parts 2a, 2b. It is characterized in that it is provided as one set with the plate 14.

The present invention will be specifically described below based on embodiments shown in the drawings.

The embodiment shown in FIGS. 1 to 4 uses three sets of connecting plates of the present invention to connect a pair of frame members 1a and 1b made of H-shaped steel. In this embodiment, each connection portion 2 of a pair of frame members 1a, 1b
In a and 2b, a joint plate consisting of a male plate 5 applied from the outside to the vertical parts 11a and 11b on one side, and an upper female plate 14a and a lower female plate 14b applied from the inside, and a vertical part 16a on the other side , 16b from the outside, and an upper female plate 14a and a lower female plate 14b applied from the inside as a pair, and a male plate applied from below to the central horizontal portions 17a and 17b. 5 and a female plate 14c applied from above are used as a pair.

In each set, the male plate 5 has circular holes 7 formed at predetermined locations on the board, and round head bolts 4 are inserted into these circular holes 7 so that the shaft portions 8 protrude from one surface 6 of the board. At the same time, each bolt head 9 is fixed to the substrate by spot welding 10 (FIG. 4).
The male plate 5 also connects both the connecting parts 2a and 1b of the frame members 1a and 1b.
2b, and each bolt 4 is disposed at a position corresponding to the bolt insertion hole 3 of both the connecting portions 2a, 2b. On the other hand, the female plates 14a, 14b, 1
A circular hole 20 corresponding to the bolt 4 is bored in the hole 4c.

Next, frame members 1a, 1 using the joint plates of the present invention
An example of the connection method b will be explained. First, the male plates 5 are arranged on the outer surfaces 12a, 12b of the vertical portions 11a, 11b on one side of the pair of frame members 1a, 1b, which are arranged in opposition to each other, and the bolts 4 protruding from the inner surfaces 6 are attached to both frame members. 1a, 1b are inserted into the bolt insertion holes 3 all at once, and the board is inserted into the outer surfaces 12a,
12b. Next, the vertical portion 11a,
After loosely inserting the circular holes 20 of the upper and lower female plates 14a, 14b into the bolt shaft parts 8 protruding from the inner surfaces 13a, 13b of the bolt 11b, and applying these female plates 14a, 14b to the inner surfaces 13a, 13b, 4
Screw the nut 15 onto the tip of the screw, and tighten these with a tool such as a box wrench. Similarly, both frame members 1a, 1b are connected by the male plate 5, upper and lower female plates 14a, 14b, and nut 15 at the other side vertical portions 16a, 16b of both frame members 1a, 1b. Central horizontal part 17a, 1
7b, the male plate 5 is placed on the lower surface 18a, 18b, and the female plate 14 is placed on the upper surface 19a, 19b.
c and nuts 15 connect both frame members 1a and 1b. As a result, both frame members 1a and 1b are firmly connected at three locations.

FIG. 5 shows an embodiment in which flat steel is used as the frame members 1a and 1b, and FIG. 6 shows an embodiment in which angle iron is used as the frame members 1a and 1b. The joint plates used for these, which are a pair of male plates 5 and female plates 14d, and the joint plates, which are a pair of male plates 5, 5 and female plates 14e, are both those of the above embodiments. It is basically configured the same as . The substrates of the male plate 5 and the female plate 14d in FIG. 5 are formed to have substantially the same size, and the substrate of the female plate 14e in FIG. 6 has a chevron shape.

In each of the embodiments described above, it is of course possible to use a washer when fastening the bolt 4 and nut 15.

As described above in the present invention, the male plate has bolts protruding and fixed in advance at positions corresponding to the bolt insertion holes of the frame member of the board, and the female plate has circular holes drilled at positions corresponding to the bolt insertion holes of the female plate. The connecting plate, which is a pair of plates, prevents the bolt and nut from rotating together when tightening nuts when connecting frame members, so the work of connecting frame members can be carried out smoothly and efficiently. can. Moreover, the bolts of the male plate can be inserted into the bolt insertion holes of both frame members at once, and from this point of view as well, the work can be carried out efficiently.

Further, according to the present invention, an inexpensive bolt such as a round head bolt can be used, and the bolt can be easily fixed to the board by drilling a circular hole in the board, inserting the bolt into the hole, and fixing the bolt to the board by spot welding. Since the male plate of the present invention can be formed by processing,
Material costs can be reduced.

Further, according to the present invention, once the joint plate is assembled to the frame member, there will be no misalignment between the joint plate and the frame member, and furthermore, after tightening one nut to the bolt, the joint plate is fixed to the frame member. This eliminates the need for the worker to adjust the misalignment of the joint plate, and also eliminates the need for work such as holding down the bolt head, making it possible to significantly improve work efficiency. .

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective view showing a state in which frame members are connected using the joint plate of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. A perspective view showing a partially exploded state of Fig. 1, Fig. 4
The figure is an enlarged cross-sectional view showing a part of FIG. 1 in an exploded state, and FIGS. 5 and 6 are perspective views showing other embodiments in an exploded state. 1a, 1b...Frame member, 2a, 2b...Connection part, 3...Bolt insertion hole, 4...Bolt, 5...
Male plate, 14... female plate, 20... circular hole.

Claims (1)

[Claims] 1. For each connection part of a pair of frame members, a male plate with bolts arranged so as to correspond to bolt insertion holes provided in this connection part protrudes from the board and is applied to one side of the connection part; A circular hole corresponding to the bolt is provided in the board and a female plate is applied to the other side of the connection part.
A joint plate for a frame member, characterized in that it is provided as a set.