JPH06180028A - Connecting method between column and beam and fitting thereof - Google Patents

Abstract

PURPOSE:To prevent bolts and such from being exposed to the underside of a beam and make no hindrance to tightening operations even if a recess hole necessary for tightening at the beam side with a connecting bolt is formed into being narrowed and deepened, in a such connection as piercing through the connecting bolt from a column to the beam. CONSTITUTION:Each connecting bolt 1 formed with a clamping head part 11 at a tip is used, while a recess hole 10 is installed in the top of a beam 6 so as to prevent bolts, and such from being exposed to the side of a ceiling, and a washer member 3 and a latch member 5 are passed through the connecting bolt 1 through this recess hole 10. In succession, the latch member 5 is latched to the clamping head part 11, and with the point of such a simple operation as driving a wedge 7 in a gap between the washer member 3 and the latch member 5, the recess hole 10 is able to be narrowed insomuch that strength of the beam 6 is not impaired, and in addition, it can be formed so deeply as being suitable for each rational setup of the two connecting bolts 1 and their positional tightening operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes columns and beams of wooden buildings (columns and beams of laminated materials in a building of a laminated material structure, and structural materials in a building of a panel construction method correspond to columns and beams. ) And a connecting metal fitting used therefor.

[0002]

2. Description of the Related Art As a method of connecting columns and beams, framing has been used in Japan since ancient times, but nowadays, especially in buildings with a laminated material structure or buildings with a panel construction method, connecting metal fittings are used. It Further, even in the frame assembly method, when using a thin material, a connecting metal fitting is used as an auxiliary in order to secure necessary connecting strength while reducing the notch of the thickness section. Examples of such connecting fittings include crossover bolts and battledore bolts.

A crossover bolt is composed of a bolt having male threads formed on both ends, a nut and a washer. To connect a pillar and a beam with this, a hole is formed in the pillar and the beam, and the beam is attached to the beam. Is provided with a concave portion in which the nut and the washer plate are housed, and is tightened by the nut hanging on the pillar and the nut hanging on the concave portion of the beam.

The battledore bolt is one in which one end of the bolt is formed flat in a battledore shape and a male screw for screwing a nut is formed at the other end thereof. A bolt insertion hole is provided, and the battledore portion is nailed or screwed to the outer surface of the beam, and then the nut is tightened.

[0005]

When a cross bolt is used to connect a column and a beam, a tool for rotating the nut is indispensable for screwing the nut into the recess of the beam, and in order to enable its operation. First, it is necessary to make the concave hole shallow and wide. The shallow recesses allow the bolts to pass near the outer surface of the beam, which is not close to the center of the beam, so that the fastening force is unidirectional and the connection cannot be stable.
If a plurality of connecting bolts are used, such as evenly moving up and down, the connecting operation becomes troublesome twice. Further, if the concave hole is wide (conventionally, to the extent shown by the chain double-dashed line in FIG. 3), the strength of the beam is lost due to the concave hole. By the way, it is desirable that even a deep concave hole occupy as small an area as possible in the thickness section of the beam.

When the battledore bolt is used, no recessed hole is required in the beam, but there is a disadvantage that the battledore portion is exposed on the outer surface of the beam. In general, the beams are hidden by the ceiling members, but for example, in a building in which the ceiling members are exposed to expose the framework, or when the interior is omitted to use the attic as a room, the battledore bolts are visible and are not visible. Become. Also in the case of a crossover bolt, when it is used above and below the beam, the lower side is visible, so there is a similar problem.

The present invention has been made in view of the above circumstances.
Since the bolts are not exposed on the lower side of the beam and the tightening of the connecting bolt on the beam side can be done easily by a simple wedge driving operation, the beam has a narrow recess for bolt tightening. Further, it is an object of the present invention to provide a method of connecting a pillar and a beam that can be formed deep and a connecting fitting.

[0008]

In order to achieve the above-mentioned object, the present invention is to form an insertion hole for a connecting bolt from a column to a beam, and to form a concave hole in the upper surface of the beam for opening the insertion hole. Pierce, pass the connecting bolt from the pillar to the concave hole, stop the base end so that the tip of the connecting bolt can be tightened in the concave hole,
When tightening the tip, insert the washer member required for the tightening and the hooking member facing it into the tip of the connecting bolt protruding into the recessed hole, and hook the hooking member to the tip of the connecting bolt. The method for connecting columns and beams is characterized in that a wedge is driven between the washer member and the latch member.

Further, according to the present invention, a plurality of connecting bolts are provided, each of which has a hooking structure at the base end portion so that the tip end portion can be tightened, and a fastening head portion required for tightening is formed at the tip end portion,
It has a long washer member and a latching member that are commonly used for each connecting bolt, and a wedge that is driven in from the longitudinal direction between the two members. The characteristic metal fittings for columns and beams were constructed.

[0010]

[Operation] Since the method of connecting the column and the beam is configured as described above, the operation of tightening the connecting bolt in the concave hole of the beam is driving the wedge, and at that time, inserting the tool into the concave hole and rotating the tool. Since there is no need to do so, the concave hole can be formed to be narrow and deep so as to maintain the strength of the beam. Further, by forming the concave hole deeply, when one connecting bolt is passed from the pillar to the beam, it can be positioned at the center, and when a plurality of connecting bolts are passed, they can be evenly arranged. .

Since the connecting fitting for connecting the pillar and the beam is constructed as described above, the connecting bolt is tightened in the same manner by driving the wedge. However, since a plurality of connecting bolts are used, the connecting pillar and the beam are connected to each other. The combination and the connection strength are stable.
Further, since the washer member and the latch member are shared by both connecting bolts, the wedge can be driven at once.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 to FIG. 3 show an embodiment, in which a connecting fitting P is mainly composed of a pair of upper and lower connecting bolts 1, 1 and has a base end portion as a precondition for tightening the front end portion thereof. It has a hooking structure 2, and both ends of the connecting bolts 1 and 1 have a washer member 3 and a hooking member 5 in order to tighten the tips at the same time.
And the pair of wedges 7, 7 is shared. Then, the pillar 4 and the beam 6 are connected by the connecting fitting P.

Through holes 8 and 8 for the upper and lower connecting bolts 1 and 1 are drilled in the pillar 4 and the beam 6, and an elongated concave hole 10 is formed in the upper surface of the beam 6 by a drill and a mino. Insertion holes 8 are formed in the inner surface of the recessed hole 10. The recessed hole 10 is a beam 6
Since it is deeply formed on the lower surface of the connector and does not come out on the lower surface, the connecting fitting P cannot be seen at all on the ceiling. In addition,
The pillar 4 is formed with a recess 14 by extremely shallow carving so as not to impair its strength. A washer is provided on the outer surface of the pillar 4 for fixing the hooking structure 2.

The connecting bolt 1 is formed with a male screw 9 at the base end and a fastening head 11 at the tip, and a neck portion 13 having a small diameter is formed for forming the fastening head 11.
However, the fastening head 11 may be formed by a simple bulge.

The hooking structure 2 includes nuts 15 and 15 to be screwed into the male screws 9 and 9 of the connecting bolts 1 and 1, and the washer 1 thereof.
7, 17 and a strip-shaped washer plate 19 shared by both connecting bolts 1, 1. Therefore, final tightening with screws is also possible at the base ends of the connecting bolts 1, 1. However, since the final tightening can be performed optimally at the tip portion, as shown in FIG. 4, a simple bolt head 21,
21 may be formed.

Since the washer member 3 and the latch member 5 are commonly used by the upper and lower connecting bolts 1 and 1, they are vertically long. The upper and lower ends are provided with holes 23, 23 through which the connecting bolts 1, 1 pass and hook holes 25, 25. Further, guide grooves 27, 27 into which the wedges 7, 7 are inserted are formed on the facing surfaces.

The hooking hole 25 is the fastening head 1 of the connecting bolt 1.
1 is a size that passes through, but in order to hang it irremovably, a small cutout 29 through which only the neck 13 passes and the fastening head 11
The important notch 31 in which is accommodated is formed. Further, the forming direction of the wedge 7 is upward so that the wedge 7 does not come off by being driven. Therefore, when the hooking member 5 is hooked, the hooking holes 25, 25 may be passed through the tips of the connecting bolts 1, 1 and then simply dropped.

Regarding the cross-sectional shapes of the washer member 3 and the latch member 5, the washer member 3 has a semicircular shape and the latch member 5 has a semi-circular shape because of the problem of securing the tightening strength and the relationship with the shape of the recessed hole 10.
Is formed into a square. However, it may be formed into a strip-shaped plate body as shown in FIG. In that case, the important notch 31 is not necessarily required for the hook member 5.

The wedge 7 is formed in a chopstick shape. In terms of material, in addition to metal, hard wood such as keyaki and oak, bamboo, etc. can be used. Further, as shown in FIG. 4, if it is formed into a bifurcated leg, insertion becomes easy. Moreover, in this case, since the connecting bolts 1 and 1 are straddled by both legs to guide the insertion, the guide grooves 27 and 27 are not necessarily required.

FIG. 5 shows another embodiment. In this case, since the beams 6 and 6 facing each other are connected with the column 4 in between, the fastening heads 11 and 11 are provided at both ends. A connecting bolt 1 with is used. Further, at both ends, similarly to the above-described embodiment, the wedge 7 is driven between the washer member 3 and the hooking member 5, and the both ends are hooked on the beams 6 and 6. In the present invention, the object to be directly hooked is not always the pillar 4,
In the case of this embodiment, the fastening means by one wedge 7 constitutes the hooking structure 2. Further, one of them may have a locking structure in which the washer member 3 and the wedge 7 are omitted.

FIG. 6 shows the overall frame structure of the building frame in order to show some examples of the use of the above-mentioned connecting fitting P. The beam 6 is connected. Further, as shown in the figure, it can also be effectively used for connecting both roof beams 6 and 6 in a ridge and connecting the pillar 4 to the base plate 30 of the foundation.

[0023]

As described above, according to the present invention,
Since the connecting bolt is tightened by driving the wedge in the recessed hole provided in the beam, the work can be performed easily and efficiently. Moreover, since the tightening can be performed even if the recessed hole is formed to have a narrow width, the area occupied by the recessed hole in the thickness section of the beam is reduced, and the strength of the beam can be secured. Also, in the procedure of tightening operation,
Since there is no restriction on the depth of the recessed hole, it is possible to place the connecting bolts at appropriate locations where the fastening strength is even, and there is no need to form large mortise holes or notches deep in the pillar, There is an excellent effect that the strength of connecting the pillar and the beam and the strength of the building frame can be increased.

Further, regardless of the arrangement number of the connecting bolts, the bolts are not exposed on the ceiling side, so that there is an effect that even if the interior material is lacked, it becomes invisible.

Particularly, in the case of the connecting fitting, since the washer member, the retaining member and the wedge are shared by the plurality of connecting bolts, not only the structure is simplified, but also the processing of the concave hole and the driving of the wedge are performed. Is one work, which is more suitable for improving work efficiency and strength in building assembly.

[Brief description of drawings]

FIG. 1 is a perspective view of a connecting fitting.

FIG. 2 is a vertical cross-sectional view showing a usage state of the connecting fitting.

FIG. 3 is a transverse cross-sectional view showing a usage state of the connecting fitting.

FIG. 4 is a perspective view of a connecting fitting according to another embodiment.

FIG. 5 is a cross-sectional view showing a use state of a connecting fitting according to another embodiment.

FIG. 6 is an explanatory view showing some examples of use of connecting fittings for a frame of a building skeleton.

[Explanation of symbols]

 P Column and beam connection fitting 1 Connection bolt 2 Locking structure 3 Washer member 4 Column 5 Locking member 6 Beam 7 Wedge 8 Insertion hole 10 Recessed hole 11 Fastening head 25 Locking hole

Claims (2)

[Claims] 1. An insertion hole (8) for connecting bolts (1, 1) is formed from a column (4) to a beam (6), and the beam (6) is also formed.
A concave hole (10) through which the insertion hole (8) is opened is formed on the upper surface of the column, and the connecting bolts (1, 1) are connected from the pillar (4) to the concave hole (10).
The base end of the connecting bolt (1, 1) so that the tip of the connecting bolt (1, 1) can be tightened in the recess (10), and the tightening of the leading end causes the connecting bolt (1, 1) protruding into the recess (10). The washer member (3) required for the tightening and the hooking member (5) facing it are inserted into the tip end of 1), and the hooking member (5) is attached to the tip end of the connecting bolt (1, 1). A method for connecting a pillar and a beam, characterized in that a latch (7) is driven between the washer member (3) and the latch member (5). 2. A plurality of connecting bolts (1, 2) provided with a hooking structure (2) at a base end portion so as to be tightened at a tip end portion, and a fastening head portion (11) required for tightening is formed at the tip end portion.
1), a long washer member (3) and a latching member (5) shared by the connecting bolts (1, 1), and both members (3, 3).
5) a wedge (7) driven in the longitudinal direction between them, and the fastening head (1) of the connecting bolt (1, 1) is attached to the latch member (5).
A coupling fitting for a column and a beam, characterized in that a hooking hole (25) for hanging 1) is provided.