JP2000008484A - Connector of structural material for construction and bolt for fixing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of firmly fixing a horizontal structural material such as a sill, a beam, etc., and a vertical structural material such as a column and a bolt for fixing the connector capable of easily fixing the connector to a construction structural material. SOLUTION: Reinforcing plates 3 are installed onto the left-right side faces of bent plates, which have horizontal plate sections 2a fastened onto a horizontal structural material such as a sill 6, a beam, etc., and vertical plate sections 2c fixed onto a vertical structural material such as a column 11 and to which holes 4, 5 for inserting fixtures such as bolts to these horizontal plate sections and vertical plate sections respectively are formed. Round corners 2b are formed to the connecting sections of the horizontal plate sections and vertical plate sections of the bent plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting member for connecting a horizontal structural member such as a foundation or a beam and a vertical structural member such as a pillar in a wooden building, and a bolt for fixing the connecting member. .

[0002]

2. Description of the Related Art In a wooden building, a connecting member called a pull-in hardware or a hole-down hardware is used to interconnect a horizontal structural material such as a base or a beam with a vertical structural material such as a pillar. Many are used. This type of connecting member firmly secures the structural materials so that the joints between the structural materials such as columns do not come off and the building collapses when an external force is applied to the buildings due to earthquake or wind damage. It is for doing.

[0003] There are various types of conventional connecting members, such as those capable of fixing a brace member or the like. The basic structure is fixed to a horizontal plate portion fixed to a horizontal structural member and a vertical structural member. A hole for inserting a fixing bolt is formed in an angle material having a vertical plate portion.

In such a conventional connecting device, when an external force is applied in a state where the structural members are connected, stress concentrates on a corner portion between the horizontal plate portion and the vertical plate portion, and the connecting device is deformed to have a sufficient yield strength. There was a problem that could not be obtained.

[0005] When the connecting member is fixed to the base, a bolt with a square seat plate at the lower end of the screw is used as a bolt for fixing the connecting member, but the lower surface of the base is in contact with the upper surface of the foundation. Because of the contact, a counterbore for receiving the seat plate must be formed around the opening of the vertical hole in the lower surface of the base so that the seat plate of the seat bolt does not protrude from the lower surface of the base. However, since the seat plate is square, the counterbore hole must be formed in a square shape, and there is a problem that it is not easy to process wood during use.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a connector capable of firmly fixing a horizontal structural member such as a base or a beam to a vertical structural member such as a column, and to easily fix the same to a building structural material. It is an object of the present invention to provide a bolt for fixing a connector that can be used.

[0007]

In order to achieve the above object, a connecting member of a building structural material according to the present invention comprises a horizontal plate portion fixed to a horizontal structural member such as a base or a beam, and a vertical structural member such as a pillar. The horizontal plate and the vertical plate are provided with reinforcing plates on the left and right sides of a bent plate in which holes for inserting fixing tools such as bolts are formed, and The bent portion is formed by adding a radius to a continuous portion of the horizontal plate portion and the vertical plate portion.

[0008] Further, the connecting tool fixing bolt according to the present invention has a circular seat plate at the lower end of a screw rod having a thread formed at least in an upper portion, and a nail hole communicating vertically with the seat plate. It is open.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a connector according to the present invention. The connecting tool 1 is made of metal such as iron, and has reinforcing plates 3 on the left and right sides of a substantially L-shaped bent plate 2 having a horizontal plate portion 2a, a round plate portion 2b, and a vertical plate portion 2c. 3 are welded, and holes 4 and 5 for bolt insertion are made in the horizontal plate portion 2a and the vertical plate portion 2c, respectively.

In order to fix the connector 1 to the base 6, a bolt 7 with a seat as shown in FIG. 2 is used. The bolt 7 with a seat is formed by welding a circular seat plate 9 to the lower end of a screw rod 8, and a plurality of nail holes 10, 10 which are vertically communicated with the seat plate 9 are provided at positions substantially equidistant from the center. It is.

The dimensions of the bolt 7 with a seat are, for example, when it is used for fixing to a base 6 made of a square material having a cross section of 105 × 105 mm, the diameter of the screw rod 8 is 12 mm and the length is 130 mm.
~ 140mm, seat plate diameter is 50mm, thickness is 6m
Use a material of about m. The threaded rod 8 may have a thread only on the upper part as shown in the figure, or may have a thread entirely.

The center positions of the bolt insertion holes 4 and 5 are about five times the diameter of the bolts to be used with reference to the intersection of the extension lines of the horizontal plate portion 2a and the vertical plate portion 2b. It is desirable.

Using the connector 1 of the present invention configured as described above, the pillar 11 as the vertical structural material is mounted on the base 6 as the horizontal structural material.
In order to fix the joints, connecting members are attached to the left and right of the pillar 11 as shown in FIG.

A vertical hole 12 for inserting a bolt with a seat is provided in the base 6.
And a counterbore 13 for accommodating the seat plate 9 of the seated bolt at the opening of the vertical hole on the lower surface side of the base, and a lateral hole 15 for bolt insertion is formed in the column 11. .
The counterbore 13 can be easily formed by using a cutting tool mounted on an electric drill.

Further, the bolt 7 with a seat, which is inserted before the base 6 is attached to the foundation 14, has
It is detented by nails 16,16 driven into the base through 0,10. The nails 16 are desirably driven obliquely so that the tips spread in the outer peripheral direction of the seat plate 9.

The horizontal plate 2a of the connector 1 is fixed to a base by screwing a nut 17 to a bolt 7 with a seat passing through a hole 4 formed in the horizontal plate. Further, each vertical plate portion 2c of the connecting tool 1 provided on the left and right of the column 11 is screwed with a nut 19 to a hexagon bolt 18 passing through the hole 5 formed in the vertical plate portion 2c and the horizontal hole 15 of the column 11. Is fixed to the pillar.

Using the connecting device 1 according to the present invention, a strength test was conducted in which the column 11 fixed to the base 6 was pulled upward as described above, and the result shown in FIG. 4 was obtained. In the proof stress test, a 105 × 105 mm hinoki material was used for the base and the column.
Hex bolt 18 for fixing the vertical plate 2c to the
The one having a length of 2 mm and a length of 130 mm was used.

As shown in the graph of the test results (FIG. 4), the tensile strength exceeded 6000 kgf. This value is about three times that in the case of using the conventional coupler. In addition, when a tensile force was further applied in the same test, the hinoki material used as the base was broken, and it was impossible to measure the maximum proof stress of the connecting device itself.

When the beams 20 as the horizontal structural members are fixed to the columns 11a and 11b as the vertical structural members, connecting members are attached to the left and right of the columns 11a and 11b above and below the beams 20 as shown in FIG.

A vertical hole 21 for bolt insertion is formed in the beam 20, and a horizontal hole 22 for bolt insertion is formed in each of the upper and lower columns 11a and 11b. The horizontal plate portion 2a of the connecting tool 1 is screwed with a nut 19 to a hexagon bolt 18 passed through a hole 4 formed in each horizontal plate portion of the connecting tool provided vertically above and below the beam and a vertical hole 21 of the beam. Each vertical plate portion 2c of the connecting tool 1 provided on the left and right of the upper and lower columns 11a and 11b has a hole 5 formed in the vertical plate portion 2c and a horizontal hole 22 of the column. A nut 19 is screwed into the hexagon bolt 18 that has passed through and fixed to the column.

In the embodiment described above, the horizontal plate portion 2a and the vertical plate portion 2c of the connector 1 are each provided with one hole 4 and 5 for bolt insertion, respectively, as shown in FIG. The portion 2c may be longer than the horizontal plate portion 2a and a plurality of bolt insertion holes 5a and 5b may be provided. Further, the horizontal plate portion 2a may be made longer so that a plurality of holes for bolt insertion may be made in the horizontal plate portion, or both the horizontal plate portion 2a and the vertical plate portion 2c may be formed to have large lengths. May be provided with a plurality of bolt insertion holes.

In each of the above-described embodiments, the reinforcing plate 3 is fixed to the bent plate 2 of the connector by welding, but may be integrally formed by casting or the like.

[0023]

[Effects and effects of the present invention] Since the connecting tool according to the present invention is provided with a radius at a continuous portion between the horizontal plate and the vertical plate, when an external force is applied to the connecting tool, the radius is evenly distributed to the radius. As a result, stress is not concentrated on the corners between the horizontal plate and the vertical plate as in the conventional connector. Therefore, the connector of the present invention is hardly deformed even when an external force is applied, and can obtain sufficient fixing strength.

Further, since the connecting tool fixing bolt according to the present invention has a circular seat plate, a counterbore for accommodating the seat plate is formed in a circular shape by a cutting tool or the like mounted on an electric drill. What is necessary is just to form, and a cutting process can be performed easily. Further, since the seat plate is provided with a nail hole, by driving the nail into the base through the nail hole, it is possible to prevent the bolt from running idle when the nut is screwed into the bolt.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a coupler according to the present invention.

FIG. 2 is a perspective view showing a connector fixing bolt according to the present invention.

FIG. 3 is a partially cutaway front view showing a state in which a base and a column are fixed using the coupler according to the present invention.

FIG. 4 is a graph showing the results of a tensile strength test of the connector according to the present invention.

FIG. 5 is a partially cutaway front view showing a state in which a column and a beam are fixed using the coupler according to the present invention.

FIG. 6 is a perspective view showing another embodiment of the connector according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting tool 2 Folding plate 2a Horizontal plate portion 2b Round portion 2c Vertical plate portion 3 Reinforcement plate 4, 5 Bolt insertion hole 6 Base 7 Seat bolt 8 Screw 9 Seat plate 10 Nail hole 11 Column 12 Vertical hole 13 Seat Counterbore 14 Foundation 15 Side hole 16 Nail 17 Nut 18 Hex bolt 19 Nut 20 Beam 21 Vertical hole 22 Side hole

Claims (2)

[Claims] 1. A horizontal plate portion fixed to a horizontal structural member such as a base or a beam, and a vertical plate portion fixed to a vertical structural member such as a pillar. Bolts are respectively attached to the horizontal plate portion and the vertical plate portion. Reinforcement plates are provided on the left and right sides of a bent plate having holes for inserting fixtures such as the above, and a radius is added to a continuous portion of the horizontal plate portion and the vertical plate portion of the bent plate. A connector for building structural materials. 2. A fixing member for a structural member for construction, comprising a circular seat plate at a lower end of a screw rod having a thread formed at least at an upper portion, and a nail hole communicating vertically with the seat plate. Bolts for