JPH08120792A - Beam coupling metal fitting - Google Patents

Abstract

PURPOSE: To facilitate the positioning in the connection work of a beam and a pillar, maintaining the connection rigidity in comparison with a traditional joint. CONSTITUTION: The near center part of a strip-shaped metal panel is formed of a back panel 11, and both the end parts of the back plate 11 is bent to form two opposed side plates 21 and 22 and the upper edge front part of the side plate is cut to form the bolt guide parts 27 and 28 having a nearly V-shape. Respective prescribed number of machine screw holes 25 and 26 are formed on each of the side plate and the back plate, and the lower end parts of the side plate and the back plate are bent outward to form the projecting end pieces 23, 24 and 12. The bolt guide parts 27 and 28 of a main metal fitting 10 fixed on a pillar 30 guide a bolt 43 which is previously inserted into a beam 40, and perform the positioning for the beam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting for a beam and a strut in timber construction, and more particularly to a metal fitting structure for facilitating work.

[0002]

2. Description of the Related Art Traditionally, the connection of beams in a wooden construction has various uneven patterns, but recently, for the purpose of reducing the work load and the construction cost, without using a complicated uneven joint structure. A simple fitting may be used. 7 to 9 exemplify a joint fitting in a joint. In these drawings, reference numeral 1 is a pillar (post), 2 is a beam member, and the connecting fittings are shown as reference numerals 3 to 5. These connection fittings 3 to 5 basically adopt a method in which the fittings 3 to 5 are fixed to the pillar 1 in advance, and the beam 2 is aligned with the fittings and connected by nails (or screws or the like). Reference numeral 6 is a nail hole (screw hole) on the metal fitting side, and 7 is a nail hole (screw hole) on the beam side. As other beam joint fittings that have been conventionally proposed, for example, a technique described in Japanese Patent Laid-Open No. 4-330136 is known.

[0003]

By the way, these conventional joint fittings have the problems that the connection strength is weak and the positioning is difficult when connecting the beams. This is shown in FIG.
The connection metal fitting 3 will be described as an example. The connection metal fitting 3 is one in which the beam 2 is placed on the bottom plate 8 and the metal fitting 3 and the beam 2 are connected with a nail, but the screw holes 6 and 7 need to be aligned. Therefore, the beam 2 must be constantly suppressed and supported in the direction of the arrow A in the figure. Therefore, it is necessary to hammer the nail while supporting the beam 2 at the time of work, and the burden on the worker who holds the beam 2 is reduced. Increase. Moreover, since the nails (screws) for fixing have a weak force to support the load, there is a problem in strength such that a beam that is too thick cannot be used as compared with the traditional concavo-convex joint structure.

These problems are basically the same also in the connecting fittings 4 and 5. And, compared with the traditional joint structure in which unevenness is formed on wood and fitted, it is difficult to withstand the limit load in terms of strength and cannot endure free construction specifications. In a unit house using lightweight materials, the shape and weight of the beam material can be set arbitrarily, so work difficulties can be alleviated to some extent, but a new problem arises that the structure cannot be designed freely.

The connection fitting described in Japanese Patent Laid-Open No. 4-330136 is one in which the thickness of the beam can be freely changed and the degree of freedom in architectural design is improved. Similar to the connection fitting 3 of 7, the difficulty of positioning has not been eliminated.

[0006] Therefore, an object of the present invention is to facilitate positioning during connection work while maintaining connection rigidity as compared with the traditional joint.

[0007]

Means for Solving the Problems In order to achieve the above object and achieve the object, a beam joint fitting according to the present invention uses a strip-shaped metal panel as a back plate, and bends both ends of the back plate. And two side plates facing each other are formed, and a substantially V-shaped bolt guide portion is formed by notching the upper edge front of the side plate, and a predetermined number of screw holes are provided on each of the side plate and the back plate. The lower end portions of the side plate and the back plate are bent outward to form protruding locking pieces.

[0008]

In the beam joint fitting according to the present invention, since the bolt guide portion is formed by notching the upper edge front portion of the side plate in a substantially V shape, the fitting is fixed to the pillar and the positioning bolt is previously attached. By inserting the beam into the beam, the V-shaped notch of the metal fitting guides the beam according to the position of the bolt, and the positioning can be easily performed only by placing the beam on the metal fitting.

Further, since the both side plates have the locking pieces projecting outward, the locking pieces support the lower end surface of the beam member for more reliable positioning, and the load applied to the metal fittings is increased. It can be distributed to the pillars and the beams to increase the connection strength.

Further, since the locking piece is formed toward the outside of the back plate, the column member is provided with an insertion slit, and the locking piece is engaged with the slit to support the weight of the beam for positioning. It is possible to increase the accuracy and also to distribute the load to increase the connection strength.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 are views showing an example of a beam joint fitting according to the present invention. This joint fitting 10 is formed by bending a strip-shaped metal panel. As shown in FIG. 1, a back plate 11 is formed at a substantially central portion of the panel, and both ends of the back plate 11 are bent. Two side plates 21 and 22 facing each other are formed. In addition, the front of the upper edges of the side plates 21 and 22 are cut out to form a substantially V
Forming the V-shaped bolt guide portions 27, 28, the side plates 21,
2 and the back plate 11 have a predetermined number of screw holes 25, 2 respectively.
6 and 13 are provided. Furthermore, this joint fitting 10
The lower ends of the side plates 21 and 22 and the back plate 11 are bent outward to form protruding locking pieces 23, 24 and 12, respectively.

On the other hand, a slit 31 for inserting the protruding locking piece 12 at the lower end of the back plate is formed at a predetermined position of the pillar 30. Further, as shown in FIG. 2, notch slits 41 and 42 into which the side plates 21 and 22 of the joint fitting 10 can be inserted are formed at the tip of the beam member 40, and the bolt guide portions 27 and 28 of the joint fitting 10 are formed. The positioning bolt 43 to be fitted is inserted in advance. Furthermore, the beam member 40 includes
A screw hole (not shown) is formed through which a screw (bolt) 45 for fixing the beam and the metal fitting can be inserted. Incidentally, the slit 4
1, 42 can be easily formed by making a cut from the front end surface of the beam with an electric saw, for example.

In connection work, first, the protruding locking piece 12 at the lower portion of the back plate is fitted into the slit 31 of the column 30 and the back plate 1 is inserted.
1 is closely attached to the pillar 30, and the screw hole 13 is formed from the inside of the back plate 11.
The metal fitting 10 is fixed to the pillar 30 by inserting a screw (bolt) 35 into the.

Next, the notch slits 41 and 42 are aligned with the side plates 21 and 22 of the metal fittings, and the beam member 40 is placed on the metal fitting 10 from above. At that time, the positioning bolts 43, which have been inserted through the beam members 40 in advance, are used as the bolt guide portions 27 of the joint fittings.
It is guided by 28 and reaches the bottom end portions 27a and 28a, and positioning is performed. At the same time, in this positioning state,
The tip surface 47 of the beam is the connecting side surface 37 of the column, and the bottom surface 4 of the beam
8 contacts the upper surface 29 of the locking pieces 23, 24.

Therefore, as shown in FIG. 2, the distance h from the lower surface of the beam to the positioning bolt 43 is determined by the locking pieces 23, 24.
Is equal to the distance H from the upper surface 29 of the bolt guide portion to the bottom end portions 27a and 28a of the bolt guide portion, and the distance S from the beam tip surface to the positioning bolt 43 is equal to the distance H from the outer surface of the back plate to the bottom end portion 27a of the bolt guide portion. It is set equal to the distance L to 28a. In order to accommodate the head portion of the bolt 35 protruding from the back plate 11 to the beam side and bring the beam 40 into close contact with the column 30, the beam tip surface 49 between the slit 41 and the slit 42 is retreated into a concave groove shape. I am allowed.

After mounting the beam member on the metal fitting, the bolt 45 is inserted to fix the beam 40 and the metal fitting 10 as shown in FIG. 3 to complete the connection. The completed state of the connection is shown in FIGS. 4 to 6 as a side view, a plan view and a bottom view, respectively.

As described above, according to the present fitting, since the beam member (positioning bolt) is guided by the bolt guide portion,
Positioning of the beam can be achieved easily by simply putting it on the metal fitting. At the time of work, it is not necessary to constantly press and support the beam toward the pillar in order to match the screw hole of the beam and the metal fitting as in the conventional case, so that the burden on the worker can be reduced.

Further, the locking piece 12 at the lower end of the back plate is fitted into the slit formed in the pillar, and the locking piece 2 at the lower end of the side plate.
The positioning is assured because 3, 24 support the lower surface of the beam. In addition, the load applied to the metal fittings is distributed to the columns and beams, and the connection strength is also greater than that of conventional fittings. Therefore, for example, it is possible to use a thick beam similar to the traditional concavo-convex joint structure, and it is possible to meet free construction specifications.

Further, since the metal fitting can be formed only by bending the strip-shaped metal panel without using any welding, fatigue and defects of the welded portion do not occur,
Also in this respect, it is excellent in durability and reliability. It is also advantageous in terms of manufacturing cost.

The size (dimension) of the metal fitting is appropriately changed depending on the size and load of the columns and beams to be connected. For example, the height is 260 mm and the side plate depth (horizontal length) is 185.
mm, the distance between both side plates is 40 mm, the protruding length of the locking piece at the lower end of the side plate is 25 mm, and the wall thickness can be about 4.5 mm. Further, when the metal fitting is formed of a steel plate, it is desirable to perform some kind of rustproofing treatment on the surface of the metal fitting, for example, by immersing it in a solution of a rust preventive agent or applying a paint for rust prevention.

The present invention is not limited to the above embodiment. For example, in the embodiment, the number of screw holes provided in each of the side plate and the back plate is two, but three or more screw holes may be provided. Also in the example,
The height of the metal fitting is substantially the same as the height of the beam, and the upper edges of the side plates 21 and 22 appear on the upper surface of the beam. However, the height of the metal fitting is made lower than the height of the beam, and the slits 41, 42 and the side plates are Two
It is also possible to adopt a structure in which the upper edges of 1 and 22 are hidden from the upper surface of the beam.

[0022]

As described above, according to the beam joint fitting of the present invention, it is possible to easily connect the beam and the column while maintaining the connection rigidity as compared with the traditional joint. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a beam joint fitting according to the present invention.

FIG. 2 is a perspective view showing a state in which the joint fitting is attached to a pillar.

FIG. 3 is a perspective view showing a state in which a beam and a column are connected by the joint fitting.

FIG. 4 is a side view showing the same connection state.

FIG. 5 is a plan view showing the same connection state.

FIG. 6 is a bottom view showing the same connection state.

FIG. 7 is a perspective view illustrating a conventional joint fitting.

FIG. 8 is a perspective view illustrating another conventional joint fitting.

FIG. 9 is a perspective view illustrating still another conventional joint fitting.

[Explanation of symbols]

 10 Beam Joint Metal Fitting 11 Back Plate 12, 23, 24 Projecting Locking Pieces 13, 25, 26 Screw Holes 21, 22 Side Plates 27, 28 Bolt Guide Section 30 Column Material 31 Slit 40 Beam Material 41, 42 Notch Slit 43 Positioning Bolt 45 Screw (bolt)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location E04B 2/56 652 K 6951-2E

Claims (1)

[Claims] 1. A back plate is formed at a substantially central portion of a strip-shaped metal panel, two end plates are formed by bending both end portions of the back plate, and a front edge of the side plate is cut out at a front end thereof. A V-shaped bolt guide portion is formed, and a predetermined number of screw holes are provided in each of the side plate and the back plate, while the lower end portions of the side plate and the back plate are bent outward to form a protruding locking piece. Beam joint fittings characterized by.