JPH09310413A - Building jointing metal fitting and building jointing structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the looseness of a wood resulting from drying and vibration by threading and fastening a nut to the root of a bolt without applying extra shearing force on the bolt to quantitatively seize the fastening strength. SOLUTION: A jointing metal fitting mainbody (a), for which a core plate 2 is provided on a bottom plate 1 and a mounting plate 3 at one side end of the bottom plate 1, and the core plate 2, has a recess 7 in the upper side edge of the core plate 2 and a reverse recess 5 in the lower side edge to continuously correspond to a window hole opened in the bottom plate 1. The recess 7 and the reverse recess 5 has bolts 8, 6 horizontally embedded in the respective vertical side edges located on the mounting plate 3 side, and their ends are located almost at the centers of the recess 7 and the reverse recess 5. Push piece 12 loosely fitted to the bolts 8, 6 and nuts 14 threaded to the bolts 8, 6 to push the push piece 12 to the roots side of the bolts 8, 6 namely to the mounting plate 3 side are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal joint for construction and a joint structure for buildings using the metal joint.

[0002]

2. Description of the Related Art In a wooden building, two timbers are joined to each other as a joint between a pillar and a beam (girder), or a joint between a beam (girder) and a beam (girder) in a series or orthogonal direction. Part, the joint between the pillar and the base, the joint between the tops of the pair of left and right diagonal members that form the triangle of the truss together with the palm, that is, the joint between the outer lower end of the diagonal member and the upper end of the column. There are various kinds of joints, and various kinds of joints have been already proposed for what kind of joints are to be used and what kind of concrete structure.

As an example of the joint portion of the beam and the pillar, while fixing the main body of the joining metal fitting having the required shape to the side surface of the pillar,
The ends of the beam are fitted to the main body of the joining metal fitting, and the wedge piece is driven between the main body of the joining metal fitting and the end portion of the beam to move the entire beam to the side of the column, The one that is brought into pressure contact and tightened on the side surface (Japanese Utility Model Laid-Open No. 3-82703) or the nut screwed to the bolt planted in the central window hole of the above-mentioned joining metal fitting is screwed to the tip side of the bolt. By doing so, the entire beam is moved to the side of the column, and the side face of the column is brought into pressure contact and tightened state (actually, 3-92
No. 01).

[0004]

In the joint structure of the type in which the wedge pieces are driven and tightened as described above, the necessary and sufficient tightening strength of the column and the beam is determined by the appropriate driving degree (or depth) of the wedge pieces. Although it is not something that is not insufficient or excessive, it is only qualitatively grasped by relying on the intuition of a skilled person, whereas the above nut is bolted. The joint structure of the type in which the joint is screwed toward the tip side of the joint and tightened has an advantage that the tightening strength of the joint structure can be quantitatively grasped and construction management and the like can be rationalized.

However, in tightening by threading the nut toward the tip side of the bolt as described above, the closer the final tightening position is to the tip of the bolt, the greater the shearing force acting on the root of the bolt. Also, if the tightening by bolts is loosened due to the drying or vibration of the wood, it will be left loose unless the nut is screwed in again and tightened again. There is no such thing.

The present invention relates to an improvement in a joint structure in which the nut is screwed to the tip side of the bolt and tightened, and the above drawbacks are eliminated.

[0007]

According to the first aspect of the present invention, there is provided a metal fitting for construction in which a core plate 2 is vertically installed on an upper surface of a bottom plate 1, and a mounting plate is attached to one end of the bottom plate 1 and the core plate 2. The metal fitting main body a provided with 3 has a concave portion 7 on the upper side edge portion of the core plate 2, and a reverse concave portion which is continuously aligned with the window hole 4 opened on the bottom plate 1 on the lower side edge portion. 5, and the recessed portion 7 and the reverse recessed portion 5 have bolts 8 and 6 horizontally planted on each vertical edge portion which is located on the side of the mounting plate 3. The respective tips are positioned substantially in the center of the concave portion 7 and the reverse concave portion 5, a pressing piece 12 loosely fitted to the bolts 8 and 6, and a pressing piece screwed to the bolts 8 and 6 A nut 14 for pushing the bolt 12 to the base side of the bolts 8 and 6, that is, the mounting plate 3 side is provided.

According to a fifth aspect of the present invention, there is provided a joint structure for a building according to the present invention, in which the joint metal main body a is attached to the pillar b by the mounting plate 3, and the joint metal main body a is attached to the joint metal end a. A nut 14 fitted with a horizontal member such as a beam c in which a fitting space c ′ having substantially the same shape as that of FIG.
By pushing the bolt toward the root side of the bolt, through the pressing piece 12 or between the pressing piece 12 and the leaf spring piece 1.
The horizontal bridge member such as the beam c is pressed and tightened to the column b through the column 3.

The building metal fitting of the present invention according to claim 2 is for connecting horizontal members such as beams e, and the metal fitting according to claim 6 is a joint structure of the building of the present invention using the same. is there.

The metal fitting for building of the present invention according to claim 3 connects the diagonal members f, f forming the chimney, and the fitting according to claim 7 joins the building of the present invention using it. It is a structure.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention relating to beams and columns will be described with reference to FIGS.

Reference numeral a is mainly a metal fitting, which is a rectangular bottom plate 1, a rectangular core plate 2 that is vertically installed on the upper surface of the bottom plate 1 along the center line, and one side in the longitudinal direction of the bottom plate 1. The mounting plate 3 is mounted on the end and abuts on one end of the core plate 2 in the same direction in the same direction and stands upright. The mounting plate 3 has the same width as the width of the bottom plate 1 and a height. It is slightly higher than the core plate 2.

Reference numeral 4 denotes a rectangular window hole formed in the bottom plate 1, 5 denotes a reverse recessed portion provided in the core plate 2 so as to be continuously aligned with the window hole 4, and is a vertical edge portion of the reverse recessed portion 5. Bolts 6 are horizontally planted on the vertical edges located on the side of the mounting plate 3, and the tips thereof are located substantially in the center of the reverse recess 5.

Reference numeral 7 is a recess provided on the upper edge of the core plate 2. In order to avoid the strength of the core plate 2 from decreasing as much as possible, the recess 7 is provided at a position where at least center lines thereof do not coincide with the reverse recess 5, and the mounting plate 3 side is provided. Bolts 8 are horizontally planted at the vertical edge portions located at, and the tip ends thereof are located substantially in the center of the recess 7.

9 ... are bolts for attaching a lid plate, which are arranged in rows on the upper edge of the core plate 2 at required intervals, and 10 and 10 are core plates 2.
The tightening bolt insertion holes provided at the upper and lower required portions of the mounting plate 3 side, and 11 ... Similarly, the bolt insertion holes provided at the upper and lower required positions of the mounting plate 3.

Reference numerals 12 and 12 are pressing pieces which are loosely fitted to the bolts 6 and 8, 13, 13 are leaf spring pieces which are loosely fitted to the bolts 6 and 8, and 14 and 14 are nuts which are screwed into the bolts 6 and 8. Is.

Reference numeral b is a column to which the beam c is to be joined. 1
5 ... is a bolt insertion hole provided in the pillar b, which is mainly a fitting metal fitting a.
The column b is made to penetrate through the mounting plate 3 at a position corresponding to the bolt insertion hole 11.

In the joining metal fitting main body a having the above construction, the bottom plate 1, the core plate 2 and the mounting plate 3 are separately prepared, and they are assembled by an appropriate means such as welding or screwing, or the whole is integrally molded. Simple and easy to make, and its main fitting is a
Causes the tips of the tightening bolts 16 ... Inserted from one side of the bolt insertion holes 15 ... To project from the bolt insertion holes 11 of the mounting plate 3 that are in contact with the pillar b, and a required washer is provided at the projecting end. By tightly tightening the nuts 16 '... through them, the nuts 16' are firmly fixed at predetermined positions on the column b (Fig. 3).

Mounting of the main fitting a on the pillar b is as follows.
It may be carried out by the method of bolting as described above in a state where the mounting plate 3 is fitted in the recess formed by excavating the pillar b.

The beam c has a fitting space c'having substantially the same shape as the main fitting a, which is formed at the end of the joint. The fitting space c'is a horizontal flat space 17 formed in a concave shape on the bottom surface of the beam c and having a required shape and size for receiving the bottom plate 1.
A vertical groove 18 formed along the center line of the beam c and having a required shape and size for receiving the core plate 2, and a required vertical groove 18 provided on the outer end surface of the beam c for receiving the mounting plate 3. A vertical flat space 19 having a shape and a size is continuously formed.

Reference numeral 20 denotes a widening space provided between the horizontal flat space 17 and the vertical groove 18 of the beam c, which is provided corresponding to the window hole 4 and the reverse recess 5, as will be described later. is there. 21 is
It is an upper edge of the vertical groove 18 of the beam c, and is a widening space provided corresponding to the recess 7 as described later. 22,
Reference numeral 22 is a tightening bolt insertion hole which is also provided so as to cross the vertical groove 18 of the beam c and correspond to the tightening bolt insertion holes 10 and 10 as described later.

The beam c is joined to the column b in the following manner. By lowering the beam c from above the joining metal fitting a attached to the pillar b as described above, the horizontal flat space 17 is the bottom plate 1 and the vertical groove 18 is the core plate 2.
In addition, with the vertical flat space 19 corresponding to the mounting plate 3, the fitting space c'is fitted and supported by the joining metal fitting main body a (FIG. 4).

In this case, in order to fit and support the beam c on the main fitting a, it is not necessary to fit the beam c in the lengthwise direction by several tens of centimeters. In other words, even in a place where the space necessary for the movement in the length direction cannot be secured, the above-mentioned fitting support can be easily carried out by lowering it from above, which is a characteristic of the present invention. Can be said to be one of the.

By the above fitting support, the upper surface of the beam c and the upper surface of the core plate 2 of the main fitting a are flush with each other, and the cover plate mounting bolts 9 ...

Therefore, the pressing pieces 12, 12, the leaf spring pieces 13, 13 and the nuts 14, 14 are attached to the bolt 8 in the concave groove 7 (and therefore also in the widened space 21) and the reverse concave groove 5. The bolts 6 inside (and therefore also inside the widened space 20) are fitted from above and below the beam c, respectively, and the nuts 14,
14 is screwed and tightened to the root side of the bolts 6 and 8.

By this tightening, the beam c is brought into a state in which the joint end face thereof is in pressure contact with the side surface of the column b, and the beam c is firmly tightened to the column b via the main fitting a. After that, a predetermined tightening bolt 23, 23 is inserted from one of the tightening bolt insertion holes 22, 22, 10, 10 into the tightening bolt insertion hole 22, and the other protruding end of the nut 24,
Tighten at 24. Further, the lid plate 25 is placed on the beam c with the row of holes fitted to the lid plate mounting bolts 9 ... And tightened with the nuts 26. By this, a predetermined joint structure is constructed (FIG. 5).

In the above, it is clear that the tightening strength of the column b and the beam c can be quantitatively grasped by the rotation screwing amount of the nuts 14 and 14, which is one of the important characteristics of the present invention. Is.

In this first embodiment, one for one pillar
The structure for joining the beams of the book has been described. However, in this joint structure of columns and beams, there are cases where two, three, or four beams are joined to one column from two, three, or four directions, respectively. A desired joining structure can be obtained in the same manner. However, in these cases, it is of course necessary to consider the arrangement of the respective tightening bolts so that the tightening bolts do not abut each other in the column.

Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is applied to a serial joining structure of beams (or beams).

Reference numeral d denotes a joining metal fitting as a main body, which is composed of a rectangular bottom plate 31 and a rectangular core plate 32 which is vertically installed along the center line of the upper surface thereof. 33,33
Are window holes 34, 34 opened at symmetrical positions on the bottom plate 31.
Is a reverse recessed portion provided in the core plate 32 so as to be continuously aligned with the window holes 33, 33, and is a vertical edge portion of the reverse recessed portions 34, 34, and is located on the center side of the core plate 32. Bolts 35 and 35 are planted horizontally on the vertical edges, and the tips of the bolts are reversely recessed 3
It is located approximately in the center of 4,34.

Reference numerals 36 and 36 denote recesses provided at the left and right symmetrical positions of the upper edge of the core plate 32. This recess 36,36
In order to prevent the strength of the core plate 32 from being impaired as much as possible, the reverse recesses 34, 34 are provided at positions where their center lines do not coincide with each other, and the recesses 36, 36 are provided.
Bolts 37, 37 are horizontally planted on the vertical side edges of the core plate 32, which are located on the center side of the core plate 32, and the tips of the bolts 37, 37 are positioned substantially in the center of the recesses 36, 36. There is.

Numerals 38 ... Are cover plate mounting bolts which are arranged on the upper edge of the core plate 32 at a predetermined interval, and 39 ... are symmetrical to the core plate 32 between the left and right recesses 36. It is a tightening bolt insertion hole provided in the.

40 ..., 41 ... are the bolts 35,
35, 37, pressing piece loosely fitted to 37, leaf spring piece, 42
... are nuts screwed to the bolts 35, 35, 37, 37.

Reference numerals e and e are left and right beams joined by the above-mentioned joining metal fitting main body d. The beams e, e have fitting cavities e ', e'having substantially the same shape as the symmetrical left and right halves of the main fitting d, respectively, at their respective joint ends. Each of the fitting cavities e'is formed in a concave shape on the bottom surface of the beam e, and has a required shape and size for receiving the right and left halves of the bottom plate 31.
And a vertical groove 44 formed along the center line of the beam e and having a required shape and size for receiving the left and right halves of the core plate 32.
And are continuously formed.

Reference numeral 45 is between the horizontal flat space 43 and the vertical groove 44 of the beam e, and is a widening space provided corresponding to the window 33 and the reverse recesses 34, 34 as described later. It is a place. Reference numeral 46 denotes an upper edge of the vertical groove 44 of the beam e, which is a widened space provided corresponding to the recess 36 as described later. 47 ... also traverses the vertical groove 44 of the beam e and, as will be described later, the tightening bolt insertion hole 39.
It is a tightening bolt insertion hole provided corresponding to.

When joining the left and right beams e, e, fitting cavities e ', e'are fitted on both sides of the joining metal fitting main body d by lowering them from above, and both joining ends are on the bottom plate 31. To board. Therefore, the pressing piece 40, the leaf spring piece 41, and the nut 42 are provided in the recesses 36 (accordingly, in the widening space 46) and in the reverse recesses 34 (and thus in the widening space 45). ) Are fitted into the bolt 35 from above and below, respectively, and the nut 42 is screwed and tightened to the base side of the bolt 37.

By this tightening, the beams e, e are brought into a state in which their joint end surfaces are in pressure contact with each other, and they are tightly joined together via the joining metal fitting main body d. After that, each tightening bolt insertion hole 47, 39
Then, the tightening bolt 48 is inserted from one of them, and the other protruding end is tightened with the nut 49. Further, the lid plate 50 is mounted on the beams e, with the row holes thereof fitted into the lid plate mounting bolts 38 ... And tightened with the nuts 51. As a result, a beam-to-beam joint structure is constructed (FIG. 6).

A third embodiment of the present invention will be described with reference to FIGS. The third embodiment relates to a joint structure of the tops of a pair of left and right diagonal members f, f forming a chisho. This joint structure is in line with the joint structure of the beams in the second embodiment in the series direction.

That is, in the joint structure according to the third embodiment, the joint metal main body g has a relatively long dimension so that the pair of left and right diagonal members f can match the angle formed at the joint top. Forming the bottom plate 61 and the core plate 62 into a chevron shape,
The diagonal members f, f form at their joint ends fitting spaces f ', f'having substantially the same shape as the left and right halves of the chevron-shaped joint metal body g, and the cover plates 63, 63 are also left and right. The formation of the chevron is only different from the case of the second embodiment. Since other configurations are the same as those of the second embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

[0040]

As is apparent from the above description,
According to the present invention, the following effects can be obtained. Bolts are planted in the recesses provided on the upper edge of the core plate mainly made of the metal fittings, and the reverse recesses provided on the lower edge of the bottom plate that are continuously aligned with the windows formed in the bottom plate Screwing the nut screwed to the bolt to the root side of the bolt by the work from the corresponding upper and lower surfaces of the horizontal member such as a beam or the diagonal member that constitutes the palm, which is mainly mounted on the metal fitting. Thus, the horizontal member or the diagonal member can be firmly tightened.

That is, since the present invention is of a type in which the nut is screwed and tightened, the tightening strength of the joint structure can be quantitatively grasped, construction management and the like can be rationalized, and in particular, the nut can be tightened. Since the above-mentioned screw tightening is performed toward the root side of the bolt, an excessive shearing force is not applied to the root of the bolt as compared with the conventional case where the tightening is performed toward the tip side.

Further, when the leaf spring piece is loosely fitted together with the pressing piece to the above-mentioned bolt and the nut is tightened through these, even if the tightening is loosened due to the drying and vibration of the wood, the leaf spring piece is loosened. Although it is within the required range, it is possible to prevent it, which is particularly preferable for earthquake countermeasures.

[Brief description of drawings]

FIG. 1 is a perspective view showing a joint structure of columns and beams.

FIG. 2 is a perspective view of the above disassembled state.

FIG. 3 is a side view showing a state in which a main fitting is attached to a pillar.

FIG. 4 is a cross-sectional view of a state in which a joint end portion of a beam is mounted on a main joint metal fitting as above.

FIG. 5 is a cross-sectional view showing a state in which the above-mentioned beam is tightened to a column.

FIG. 6 is a perspective view showing a joint structure of beams.

FIG. 7 is a perspective view of the above disassembled state.

FIG. 8 is a perspective view of a joint structure of left and right diagonal members forming a palm.

FIG. 9 is a perspective view of the above-mentioned joining metal fitting main body, a cover plate, and the like.

FIG. 10 is a cross-sectional view of the above junction structure.

[Explanation of symbols]

 a Main metal fittings b Column c Beam c'Mating empty space d Main metal fittings e Beam e'Mating empty space f Diagonal material f'Mating empty space g Main metal fittings 1 Bottom plate 2 Core plate 3 Mounting plate 4 Window hole 5 Reverse recess 6 Bolt 7 Recess 8 Bolt 12 Pressing piece 13 Leaf spring piece 14 Nut 31 Bottom plate 32 Core plate 33 Window hole 34 Reverse recessing 35 Bolt 36 Recessing 37 Bolt 40 Pressing piece 41 Leaf spring 42 Nut 61 Bottom plate 62 Core plate

Claims (7)

[Claims] 1. A core plate 2 is vertically installed on the upper surface of a bottom plate 1, and a main metal fitting a having a mounting plate 3 at one end of the bottom plate 1 and the core plate 2 is an upper side of the core plate 2. The side edge portion has a recessed portion 7, and the lower side edge portion has a reverse recessed portion 5 that continuously matches the window hole 4 opened in the bottom plate 1, and these recessed portions 7
The reverse recesses 5 are bolts 8 and 6 that are horizontally planted at the vertical edges that are located on the side of the mounting plate 3 at the respective vertical edges, and the tips of the bolts 8 and 6 are provided in the recesses 7 and the reverse recesses. The bolts 8 and 6 are loosely fitted to the bolts 8 and 6, and the bolts 8 and 6 are screwed together, and the pushing piece 12 is located at the root side of the bolts 8 and 6. A building joint fitting, comprising a nut 14 that pushes toward the mounting plate 3 side. 2. A metal fitting main body d in which a core plate 32 is vertically installed on an upper surface of a bottom plate 31 has recesses 36 at left and right symmetrical positions of an upper side edge portion of the core plate 32, and a lower side edge portion. At the left and right symmetrical positions, there are reverse recessed portions 34 that continuously coincide with the window holes 33 formed in the bottom plate 31, and these recessed portions 36 and the reverse recessed portions 34 are vertical edge portions, and Bolts 37 and 35 are horizontally planted on the vertical side edge located on the center side of the plate 32, and their respective tips are located substantially in the center of the recess 36 and the reverse recess 34. A pressing piece 40 which is loosely fitted to the bolt 35; and a nut 42 which is screwed into the bolts 37 and 35 and pushes the pressing piece 40 to the root side of the bolts 37 and 35, that is, the center side of the core plate 32. A joint metal fitting for construction, characterized by being 3. A left and right slant members f, f which form a joint, in which a joint metal main body g in which a core plate 62 is vertically installed on an upper surface of a bottom plate 61 is formed.
And has concave portions 36, 36 at the left and right symmetrical positions of the upper side edge of the core plate 62, and the window holes 33 opened in the bottom plate 61 at the left and right symmetrical positions of the lower side edge. Three
3 and the reverse recessed portions 34, 34 which continuously coincide with each other, and these recessed portions 36, 36 and the reverse recessed portions 34, 34 are located at the edge portions thereof and on the center side of the core plate 62. Bolts 35 and 37 are planted in the peripheral portion, and the tips of the bolts are recessed 36 and 36.
And the reverse depressions 34, 34 at approximately the center thereof, the pressing piece 40 loosely fitted to the bolts 35, 37, and the bolts 35, 37 by screwing the pressing piece 40 into the bolts 35, 37. A joint fitting for construction, characterized in that it is provided with a nut 42 that is pushed toward the root side of 37, that is, toward the center side of the core plate 62. 4. A leaf spring piece (13, 41) which is loosely fitted to the bolt (8, 6, 35, 37) and is pushed to the base side of the bolt (8, 6, 35, 37) by the nut (14, 42). The construction jointing fitting according to claim 1, 2 or 3, characterized in that. 5. A fitting space c'having substantially the same shape as that of the joining metal body a is formed at the joining end of the joining metal body a of claim 1 or 4, which is attached to the pillar b by the mounting plate 3. Beam c
A nut 1 fitted with a horizontal material such as
4 is screwed to the root side of the bolt to press the horizontal member such as the beam c onto the column b through the pressing piece 12 or the pressing piece 12 and the leaf spring piece 13. A joint structure of buildings characterized by being tightened. 6. A horizontal crossing of the left and right beams e, e, etc., in which a fitting space e'having substantially the same shape as the main fitting metal fitting d is formed at the joining end with respect to the main fitting metal fitting d of claim 2 or 4. By fitting the bridge member and screwing the nut 42 screwed into the bolts 35 and 37 to the root side of the bolt, the pressing piece 40 is inserted.
Alternatively, a building joint structure characterized in that the horizontal members of the beams e, e, etc. are pressed and tightened to each other via the pressing piece 40 and the leaf spring piece 41. 7. The left and right sides of the joint fitting main body g of claim 3 or 4, which are formed with fitting spaces f'having substantially the same shape as the left and right sides of the joint fitting main body g at the joint end. Of the diagonal members f, f, and by screwing the nut 42 screwed into the bolts 35, 37 toward the root side of the bolt, the pressing piece 40 is inserted through the pressing piece 40 or the pressing piece 40. A joint structure for a building, characterized in that the diagonal members f, f are pressed and tightened to each other via a leaf spring piece 41.