JPH09137512A - Connecting metal fitting for building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a construction which can be used without necessity to dislocate the fixing position of a connecting metal fitting, even in the case where there is possibility conflicting with the fixing shaft of the connecting metal fitting, like the case of fitting a plurality of connecting metal fittings to one building material. SOLUTION: This connecting metal fitting for building material is provided with a fixing face part 11 fixed to one building material, and a pair of supporting face parts 12, 12 extending from both sides of the fixing face part 11 perpendicular to it so as to form into a U-shaped section. The fixing face part 11 is drillingly provided with four fixing holes 11a, 11b, 11c, 11d at regular intervals from the upper part to the lower part. The formed positions of these fixing holes are formed so as to satisfy the relation a<b=c=d=e. Shaft hanging jaw parts 13 having opening parts 13a are formed close to the extreme ends of the upper edge parts 12a, and shaft hanging jaw parts 14 having opening parts 14a are formed close to the extreme ends of the lower edge parts 12b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building material connecting metal fitting, and more particularly to a structure of a metal fitting suitable for forming a frame in a wooden frame construction method for constructing a house.

[0002]

2. Description of the Related Art Conventionally, to build a wooden house,
In order to connect timbers such as columns, beams, girders, climbing trees and purlins to each other, a traditional connecting method has been used in which the ends of the timbers are jointed and fitted together. However, in such a method, in order to obtain a reliable connection structure and a sufficient strength of the connection portion, accurate marking work and processing work are required, and a skilled engineer is required to perform such work. There is a problem that becomes.

Therefore, in recent years, a method of connecting wood pieces by attaching a connection metal piece of a predetermined structure to the wood piece and engaging another wood piece with the connection metal piece is being adopted. As shown in FIG. 6, the connection fitting 30 includes a fixing surface portion 31 fixed by inserting a fixing shaft such as a bolt into a plurality of fixing holes 31 a in one piece of wood, and from both sides of the fixing surface portion 31. It is a hard metal fitting having a U-shaped cross section and having a pair of support surface portions 32, 32 extending substantially vertically.

A shaft engaging jaw 33 and a shaft insertion hole 34 are formed in the pair of support surface portions 32 at the same position. The shaft engaging jaw 33 is a notch groove having an opening 33a near the tip of the upper edge 32a of the support surface 32. Also,
The shaft insertion hole 34 is a circular through hole formed below the shaft engaging jaw 33.

A plurality of through holes are formed in the side surface of one wood, for example, the pillar A shown in FIG.
The fixed surface portion 31 of the connection fitting 30 can be fixed to the pillar by inserting a fixed shaft such as a bolt inserted through the through hole into the through hole and fastening a nut. On the contrary,
The other wood, such as beams B1, B2, B3, B shown in FIG.
Two accommodation grooves 21 extending vertically are bored at the end of No. 4, and the tip end portion of the portion sandwiched by the two accommodation grooves is cut off to form a recess 22 that avoids the fixed shaft. Also,
Horizontal holes passing horizontally across the two accommodation grooves 21 are formed at two upper and lower positions. An engaging shaft 23 such as a bolt shaft is previously inserted and fixed in the horizontal hole formed on the upper side.

The end of the beam formed as described above is connected to the pillar A.
The two housing grooves are covered from above so as to accommodate the pair of supporting surface portions 32 of the connection fitting 30 with respect to the connection fitting 30 fixed to the side surface of the connection fitting 30. Then, the engaging shaft 23 inserted through the horizontal hole is introduced into and engaged with the shaft engaging jaw 33. Even in this state, the pillar A and the beam engage the engaging shaft 23 and the shaft engaging jaw 3
3, but finally, the engagement shaft 24 such as a common bolt shaft is inserted into the lower horizontal hole formed in the beam and the shaft insertion hole 34 formed in the connection fitting 30. As a result, the pillar and the beam can be completely connected.

[0007]

The above-mentioned conventional connecting fitting 3
0, the fixing hole 31a formed in the fixing surface portion 31
Since the positional relationship between the position A and the shaft engaging jaw 33 and the shaft insertion hole 34 is fixed, for example, as shown in FIG.
When the four beams B1, B2, B3, B4 are connected to the side surface of the, the beams B1, B2, B3 facing each other are connected.
When fixing B and B4 respectively, in order to fix the pair of connecting fittings 30 to the opposite side surfaces of the pillar A, the fixing surface portions 31 thereof can be fixed by a common fixing shaft.

However, if it is attempted to connect two or more beams which do not face each other, for example, beams B1 and B3, B1 and B2 and B3, or all four beams as shown in the figure, the fixed shafts for fixing the connecting fittings 30 are mutually connected. It is necessary to shift at least one of the connection fittings 30 up and down in order to conflict with the above. At this time, in order to connect the beams at the same height even if the connection fittings 30 are vertically displaced, the formation positions of the horizontal holes formed in the beams are vertically displaced to change the insertion positions of the engagement shafts 23 and 24. Therefore, there is a problem that the processing work and the connection work become difficult.

Therefore, the present invention solves the above-mentioned problems, and an object thereof is to realize a structure that can be used even if a plurality of connecting fittings are mounted as described above without shifting the fixing position of the connecting fittings. It is in.

[0010]

Means for Solving the Problems The means taken by the present invention to solve the above-mentioned problems include a fixing surface portion having a plurality of fixing portions for fixing to a building material, and a substantially vertical surface from both sides of the fixing surface portion. A pair of extending support surface portions are provided, and the support surface portions include
A pair of upper and lower shaft engaging jaws having openings respectively on the upper edge side and the lower edge side are formed, and at least one of the fixing portions is at the original position on the fixing surface portion when turned upside down. The building material connection fitting is characterized in that the plurality of fixing portions are formed in an array that is positioned at a height different from.

According to this means, since the pair of upper and lower shaft engaging jaws are provided, the building material connecting fitting can be used in the upside-down posture, and when it is used in the upside-down posture, the fixing surface portion is fixed. At least one of the plurality of fixing portions formed
Since the fixing part of is located at a different height from the original position, that is, the position when the top and bottom are normal, the height of the fixing part can be changed by turning the building material connection fitting upside down. Can be changed. Therefore, even if the building material and a portion inside thereof that interferes with the fixing by the fixing portion are present, it is possible to attach the building material while avoiding the portion.

Here, it is preferable that the pair of support surface portions are respectively provided with shaft insertion holes for inserting the engaging shafts. In this case, the connecting portion between the building materials can be completely fixed by inserting the engaging shaft such as the bolt into the shaft inserting hole.

At this time, as the shaft insertion hole,
Providing a first shaft insertion hole formed between the pair of upper and lower shaft engaging jaws and a second shaft insertion hole formed at a position deviated from between the pair of upper and lower shaft engaging jaws. Is desirable. In this case, the first present below the engaged jaw
By inserting the engagement shafts into the shaft insertion holes of the second shaft insertion holes and the second shaft insertion holes of which the distance from the fixed surface portion is different from that of the first shaft insertion holes, the connection parts from the building material by the respective engagement shafts. Since the stress applied to can be distributed and shared,
The strength of the connecting portion can be improved.

Further, the fixing portion may be a fixing hole penetrating the fixing surface portion. As the fixing part, in addition to the fixing hole for inserting the fixing shaft such as the bolt shaft, there are various fixing means for fixing the fixing surface part to the building material such as when the fixing part is the fixing shaft itself shown on the left. You may

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a building material connection fitting according to the present invention will be described with reference to the accompanying drawings. In the following embodiments, the case of connecting wood to each other will be described as an example, but the building material connection fitting according to the present invention is not limited to wood,
It can be used when connecting building materials of all materials and shapes such as steel materials, aluminum materials, stone materials, ceramics, new building materials and the like.

FIG. 1 is a vertical sectional view of a building material connection fitting of the present embodiment, and FIG. 2 is a perspective view of the building material connection fitting. In this embodiment, the fixed surface portion 1 fixed to one of the building materials
1 and a pair of support surface portions 12, 12 extending substantially vertically from both sides of the fixed surface portion 11 are formed of stainless steel or other steel material having a U-shaped cross section.

The fixing surface portion 11 is provided with four fixing holes 11a, 11b, 11c and 11d at predetermined intervals from top to bottom. As shown in FIG. 1, the forming positions of these fixing holes are such that the distance from the upper end of the fixing surface portion 11 to the center of the fixing hole 11a is a, the distance from the center of the fixing hole 11a to the center of the fixing hole 11b is b, From the center of the fixing hole 11b to the fixing hole 1
1c is the distance from the center of the fixing hole 11c to the fixing hole 1c.
When the distance to 1d is d and the distance from the fixed hole 11d to the lower end of the fixed surface portion 11 is e, for example, the relationship of a <b = c = d = e (1) is established. . As a specific example that satisfies the above formula (1), a = 30 mm, b = c = d = e =
50 mm. As will be described later, the four fixing holes may be arranged in any number as long as they are vertically asymmetrical.

The upper edge portion 12a and the lower edge portion 12b of the support surface portion 12 are formed so as to gradually incline downward and upward as the fixing surface portion 11 is advanced. A shaft jaw 13 having an opening 13a in the upper edge 12a is formed near the tip of the upper edge 12a.
A shaft jaw 14 having an opening 14a at the lower edge 12b is formed near the tip of b. The shaft jaw 1
The positions of the openings 3 and 14 are the upper edge 12a and the lower edge 12.
It does not have to be close to the tip of b, and the opening 13a may be formed not at the upper edge 12a but at the tip edge on the side of the upper edge 12a. Similarly, the opening 14a is formed on the lower edge 12
It may be formed at the tip edge on the side of the lower edge portion 12b instead of at b.

These shaft jaws 13 formed on the upper and lower sides,
Three shaft insertion holes 15 are formed between the holes 14.
The shaft engaging jaws 13 and 14 and the shaft insertion hole 15 are arranged perpendicular to each other so that their centers are on the same perpendicular line. Further, five shaft insertion holes 16 arranged vertically are formed at intermediate positions between the fixed surface portion 11 of the support surface portion 12 and the shaft engaging jaws 13 and 14 and the shaft insertion hole 15.

Using the above embodiment, four beams B1, B2, B3 and B4 were actually connected to the pillar A as shown in FIG. An enlarged cross-sectional view of the connection portion at this time is shown in FIGS. 3 and 4. FIG. 3 shows a state where the connecting portion is cut along the beams B1 and B2, and FIG. 4 shows a beam B3 orthogonal to the cross section of FIG.
It shows a state of being cut along B4. Pillar A 4
Building material connection fittings 10 are attached to the two side surfaces, respectively.

As shown in FIGS. 3 and 4, the pair of building material connecting fittings 10 mounted on the opposite side surfaces sandwiches the pillar A, and fixed shafts 26, 27 and nuts 28, which are mutually common bolts and the like. , 29 are fixed. The fixed shafts 26 and 27 are inserted into the insertion holes formed in the pillar A, and are screwed into the nuts 28.29 on the opposite side of the pillar A. In this case, the pair of building material connection fittings 10 facing each other are fixed to the pillar A at the same height position.

On the other hand, in contrast to the pair of building material connecting fittings shown in FIG. 3, the pair of building material connecting fittings shown in FIG. 4 are fixed upside down on the pillar A, whereby the building material connecting fitting shown in FIG. Axial jaw 1 with connection fittings formed on the upper edge 12a side
3 is engaged with the engaging shaft 23 attached to the beams B1 and B2, while the building material connecting fitting shown in FIG.
The shaft engaging jaw portion 14 formed on the side of b is engaged with the engaging shaft 23 attached to the beams B3, B4.

Since the building material connecting fitting shown in FIG. 3 and the building material connecting fitting shown in FIG.
The fixed shaft 26 for fixing the pair of building material connecting fittings shown in Fig. 4 and the fixed shaft 27 for fixing the pair of building material connecting fittings shown in Fig. 4 can cross each other so as not to interfere with each other. This is because the building material connection fittings are attached in the upside down posture, so that the fixing holes 11a, 11b, 11 formed in the fixing surface portion 11 are formed even if the building material connection fittings have the same mounting height.
This is because the positions of c and 11d are vertically displaced. As a result, it is not necessary to form two or more types of metal fittings having different fixing hole forming positions, the manufacturing cost can be reduced, the metal fitting selection on the site is not necessary, and the stock management of the metal fittings is also possible. It will be easier.

As shown in FIGS. 3 to 5, the beam has an engagement shaft 24 inserted into the shaft insertion hole 15 and an engagement shaft 25 inserted into the shaft insertion hole 16. Each is driven. These engagement shafts 24 and 25 may be the same as the above-mentioned engagement shaft 23 such as a bolt shaft,
Alternatively, it may be made of a metal pin and fixed by being press-fitted.

The arrangement of the fixing holes formed on the fixed surface portion of the building material connecting fitting is not limited to the arrangement having the positional relationship as in the above embodiment, and as a result, the building material connecting fitting is mounted upside down at the same height. In this case, the positions of the fixing holes may be vertically asymmetrical in the fixing surface portion so that the positions of the fixing holes are vertically displaced. Further, although a plurality of fixing holes are formed, it is sufficient that at least one of them is vertically displaced as compared with the case of the original posture. However, it is desirable that two or three fixing holes can be used in order to securely fix the fixing surface portion. Further, the fixing portion provided on the fixing surface portion is not limited to the fixing hole described above, and may be, for example, a fixed shaft protruding from the fixing surface portion, and as a result, a structure capable of fixing the fixing surface portion to the building material may be provided.

The pair of shaft jaws provided on the upper and lower sides is an essential component for enabling the construction material connecting fitting to be used upside down as described above. It is desirable that the shape and the forming position of the pair of upper and lower shaft engaging jaws are completely the same, but even if they are not necessarily the same, use in the upside down posture is not hindered.

The shaft insertion holes 15 and 16 may be formed at any positions as long as the building materials temporarily fixed by the shaft engaging jaws can be completely connected to each other as a result. It is optional. However, in order to increase the connection strength, it is necessary to form at least one at a plurality of places, particularly between the upper and lower shaft jaws and at a position deviated from between the upper and lower shaft jaws. It is desirable that the stress applied to the connecting portion can be shared by a plurality of engaging shafts in a relatively dispersed state. In the above embodiment, the plurality of shaft insertion holes 15 and 16 can be appropriately selected and used so that the stress load is dispersed as much as possible.

In the above embodiment, four beams were connected around the pillar A, but the same effect can be obtained when the beams are connected in two or more directions that do not face each other. In addition, the building material connection fitting of the present embodiment, even if there is a connection pin or wiring embedded in the building material, other unavoidable structure,
Since the structure can be easily avoided by turning the posture of the building material connecting fitting upside down, it is not limited to the above-mentioned situation, but can be widely used in various situations at the construction site.

In the method of using the building material connecting fitting according to the present invention, as shown in FIG. 5, the fixing surface portion is fixed to the surface of one building material, and the accommodation groove 21 and the recess 22 are formed at the end of the other building material.
Is not provided and the engagement shaft 23 is engaged. For example, instead of providing the concave portion 22 in the other building material, it is possible to provide a concave portion having a bottom surface similar to the fixed surface portion on the surface of the one building material and fix the fixed surface portion in the concave portion.

[0030]

As described above, according to the present invention,
Since the pair of upper and lower shaft jaws are provided, the building material connection fitting can be used in the upside down posture, and when used in the upside down posture, at least the plurality of fixing portions formed on the fixing surface portion can be used. Since the first fixing part is configured to be located at a height different from the original position, that is, the position when the upper part and the lower part are made normal, the height of the fixing part can be increased by reversing the building material connecting fitting upside down. You can change the height. Therefore, even if the building material and a portion inside thereof that interferes with the fixing by the fixing portion are present, it is possible to attach the building material while avoiding the portion.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a building material connection fitting according to the present invention.

FIG. 2 is a perspective view showing the overall shape of the same embodiment.

FIG. 3 is a cross-sectional view showing a connecting portion of a building material using the same embodiment.

FIG. 4 is a cross-sectional view of a connecting portion of a building material using the same embodiment, taken along a vertical plane orthogonal to FIG.

FIG. 5 is a perspective view showing a connection structure of a building material using the same embodiment.

FIG. 6 is a perspective view showing an overall shape of a conventional building material connection fitting.

[Explanation of symbols]

 10 Building material connection fitting 11 Fixed surface part 11a, 11b, 11c, 11d Fixed hole 12 Support surface part 13, 14 Shaft hook part 15, 16 Shaft insertion hole

Claims (4)

[Claims] 1. A fixed surface portion having a plurality of fixed portions for fixing to a building material, and a pair of support surface portions extending substantially vertically from both sides of the fixed surface portion, the support surface portion having an upper edge portion thereof. A pair of upper and lower shaft engaging jaws each having an opening on the side and the lower edge are formed, and at least one of the fixing parts has a height different from the original position when the fixing surface part is turned upside down. A building material connection fitting, wherein the plurality of fixing portions are formed in an arrangement that is located at a height. 2. The building material connection fitting according to claim 1, wherein the pair of support surface portions are respectively provided with shaft insertion holes through which the engagement shafts are inserted. 3. The shaft inserting hole according to claim 2, wherein the shaft inserting hole is formed between a first shaft inserting hole formed between the pair of upper and lower shaft engaging jaws and the pair of upper and lower shaft engaging jaws. A building material connection fitting, characterized in that a second shaft insertion hole formed at a disengaged position is provided. 4. The building material connection fitting according to claim 1, wherein the fixing portion is a fixing hole penetrating the fixing surface portion.