JP2002070162A - Connecting structure for prismatic building material and penetration bolt and prism pinching metal fixture used in connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of cracks at a portion where a bolt penetration hole is formed on a prismatic building material. SOLUTION: This connecting structure for a prismatic building material 2 and a penetration bolt 3 is provided with the prismatic building material 2 formed with a pair of bolt penetration side faces 2a and 2b and a pair of connecting side faces 2c and 2c connecting them, a penetration bolt 3 having a bolt tip section 3b and a bolt base end section 3a, with the bolt tip section 3b penetrating a pair of bolt penetration side faces 2a and 2b, a prism pinching metal fixture K provided with a bolt penetration section 18 having a penetration hole 18a penetrated by the bolt tip section 3b and arranged in contact with the bolt penetration side face 2b and a pair of prism side face pinching sections 19 and 19 provided at both end sections of the bolt penetration section 18 to pinch a pair of connecting side faces 2c and 2c, and a fastening nut 5 screwed to the penetration bolt tip section 3b to press the bolt penetration section 18 to the bolt penetration side face 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a prismatic building material and a through bolt, which connects the prismatic building material and the through bolt by screwing a nut to a through bolt penetrating the prismatic building material. More particularly, the present invention relates to a connection structure between a prismatic building material and a through bolt, which are liable to be cracked like wood, and a prism holding metal used in the connection structure.

[0002]

2. Description of the Related Art Conventionally, the following technology is known as a connection structure between the above-mentioned prismatic building material and through bolts. (Technology shown in FIG. 9) FIG. 9 is an explanatory view of a connection structure of a conventional prismatic building material and a through bolt used in a house, FIG. 9A is a perspective view, and FIG. 9B is viewed from the arrow IXB in FIG. 9A. 9C is a sectional view taken along the line IXC-IXC of FIG. 9A. In FIG. 9, a prismatic building material 2 forming a wood base is placed on the upper surface of a concrete foundation (bolt fixing member) 1. The prismatic building material 2 includes a pair of connection side surfaces 2c, 2c connecting the bolt insertion surface 2a and the opposite bolt protrusion surface 2b supported on the upper surface of the foundation 1, and the bolt insertion surface 2a and the bolt protrusion surface 2b.
And a rectangular pillar-shaped building material having a rectangular cross section (including a square) having a bolt through hole 2d penetrating between the bolt insertion surface 2a and the bolt protruding surface 2b. That is, the prismatic building material 2 has four side surfaces 2a, 2 having a rectangular cross section.
b, 2c, 2c, and a bolt through hole 2d between a pair of opposite side surfaces 2a, 2b of the four side surfaces.
Are formed vertically. And the bolt through hole 2
A pair of bolt penetrating side surfaces 2a and 2b where d is opened form the bolt insertion surface 2a and the opposite bolt protruding surface 2b. Further, a pair of connecting side surfaces 2c, which are parallel to the bolt through hole and connect the bolt through side surfaces 2a, 2b.
2c is formed.

The base 1 has a base portion 3a (a portion opposite to the tip portion) 3a of a through bolt 3 penetrating through the bolt through hole 2d of the prismatic building material 2. The bolt tip 3b protrudes from the upper surface of the foundation 1, penetrates the bolt through hole 2d of the prismatic building material 2, and protrudes from the bolt protruding surface 2b. A tightening nut 4 is screwed and tightened to the bolt tip 3b, and the prismatic building material 2 is pressed against the upper surface of the foundation 1 by the tightening nut 4.

In recent years, connecting brackets are often used when connecting horizontal beams to pillars of a house. In FIG. 9, a pillar connection hole 2 e is formed in a prismatic building material 2 as a base, and a rectangular parallelepiped insertion portion 6 a formed at the lower end of a pillar (square pillar building material) 6 is inserted into the connection hole 2 e. Have been. The pillar 6 includes the insertion portion 6a, a bolt insertion surface 6b and a bolt protrusion surface 6c on the opposite side, a pair of connection side surfaces 6d, 6d connecting the bolt insertion surface 6b and the bolt protrusion surface 6c, and the bolt A cross-sectional shape having a bolt through hole 6e penetrating between the insertion surface 6b and the bolt protruding surface 6c is a rectangular prismatic building material.

[0005] A horizontal girder (horizontal wood) 7 is connected to the upper portion of the column 6. A connection fitting 8 is used to connect the column 6 and the cross beam 7. FIG. 10 is an explanatory diagram of an example of a connection fitting used when connecting a cross beam to a pillar of a house.
In FIG. 10, a connecting bracket 8 includes a plate-shaped cross girder support portion 9 that supports the lower surface of the cross girder 7, and a base end 1 on the cross girder support portion 9.
0a is fixed. A through hole 9a is formed in the plate-shaped cross beam support portion 9.
In FIG. 9, the through bolt 10 penetrates the bolt through hole 6 e of the column 6 from the bolt insertion surface 6 b side to the bolt protrusion surface 6 c side.
c. A washer 1 is provided at the bolt tip 10.
A column (square column-shaped building material) 6 is pressed against the horizontal girder support 9 by the tightening nut 12. With this configuration, the column 6 and the connection fitting 8 are firmly connected.

In FIG. 9, the cross beam 7 has a bolt insertion surface 7a formed by the lower surface thereof and a bolt protruding surface 7b on the opposite side (upper surface) and a pair of connections for connecting the bolt insertion surface 7a and the bolt protruding surface 7b. The cross-sectional shape is a rectangular columnar building material having a side surface 7c, 7c and a bolt through hole 7d penetrating between the bolt insertion surface 7a and the bolt protruding surface 7b. The penetrating bolt 13 penetrating the bolt through hole 7a from the bolt insertion surface (upper surface) 7a to the bolt protruding surface (lower surface) has a bolt base end (bolt head) 13a and a bolt tip 13b. The bolt 13 passes through the washer 14 (see FIG. 9C), the through-hole 9a (see FIG. 10) and the bolt through-hole 7d sequentially from below to above. The bolt tip 13b penetrates the washer 15, and a tightening nut 16 is screwed into the bolt tip 13b to be tightened. By tightening the tightening nut 16 to the through bolt 13, the cross beam 7 and the cross beam support portion 9 of the connection fitting 8 are firmly connected.

[0007]

The inventor of the present invention is engaged in work related to the construction and demolition of houses, and in particular, during the demolition work of houses, the columns 6 on the prismatic building material 2 forming the base are required. When trying to pull down the horizontal girder 7 or the like, the base 2
We have seen many times the phenomenon in which the prismatic building material 2 forming the crack easily cracks at the portion of the through bolt 3. FIG.
FIG. 11A is a perspective view showing a state in which a connecting portion of a prismatic building material used in the house shown in FIG. 9 with a through bolt is cracked, FIG. 11A is a perspective view, and FIG. 11B is a view from the arrow XIB in FIG. 11A. 11C is a front view, and FIG.
FIG. 2 is a sectional view taken along line XIC-XIC of FIG. Each time the present inventor observes the occurrence of the cracks, the present inventors consider that the prismatic building material
If cracks occur, the house is likely to collapse, so we thought it was better to take some measures. However, up to now, the bolt through hole 2d of the prismatic building material 2
Never seen a structure provided with a means for preventing cracks in the prismatic building material 2 at the portion.

Therefore, the present inventor, when tightening the tightening nut 4 to the bolt tip 3b of the through bolt 3, simultaneously fixes the metal fittings holding the connection side surfaces 2c, 2c of the prismatic building material 2 to the prismatic building material 2. I looked for such a fitting (a crack prevention fitting) in consideration of a method of performing the above. However, to the inventor's knowledge, no metal fittings that can be used to prevent cracks have been sold to date.

[0009] In view of the above-mentioned circumstances, the present invention is directed to the following contents (O01) and (O02). (O01) To prevent the occurrence of cracks in the portions of the prismatic building material where the bolt through holes are formed. (O02) To prevent the house from being damaged by preventing the prismatic building material constituting the house from being cut or broken when an earthquake occurs.

[0010]

Means for Solving the Problems Next, the present invention which has solved the above-mentioned problems will be described. Elements of the present invention include elements of the embodiments to facilitate correspondence with the elements of the embodiments described later. The sign of parentheses is added in parentheses. The reason why the present invention is described in correspondence with the reference numerals of the embodiments described below is to facilitate understanding of the present invention and not to limit the scope of the present invention to the embodiments.

(1st invention) In order to solve the aforementioned problem,
The connecting structure of the prismatic building material (2; 6; 7) and the through bolt (3; 10; 13) of the first invention has the following constituent requirements (A0
1) to (A04). (A01) Four side surfaces (2a, 2a) having a rectangular cross section
b, 2c, 2c; 6b, 6c, 6d, 6d; 7a, 7
b, 7c, 7c) and the four side surfaces (2a, 2c).
b, 2c, 2c; 6b, 6c, 6d, 6d; 7a, 7
b, 7c, 7c), a prism-shaped building material in which a bolt through hole (2d; 6e; 7d) is formed vertically between a pair of opposite side surfaces (2a, 2b; 6b, 6c; 7a, 7b). (2; 6; 7), wherein the four side surfaces (2a, 2
b, 2c, 2c; 6b, 6c, 6d, 6d; 7a, 7
b, 7c, 7c) are the bolt through holes (2d; 6e; 7).
A pair of bolt penetration side surfaces (2a, 2b; 6b, 6c; 7a, 7b) having a bolt insertion surface (2a; 6b; 7a) and a bolt projection surface (2b; 6c; 7a) opening d).
And a pair of bolt penetration side surfaces (2a, 2b; 6b, 6c) parallel to the bolt penetration holes (2d; 6e; 7d).
7a, 7b) and a pair of connection side surfaces (2c, 2c;
6d, 6d; 7c, 7c), the prismatic building material (2; 6; 7), (A02) the bolt tip (3b; 1)
0b; 13b) and a bolt base end (3a; 10a; 13a) which is the opposite side thereof, and the bolt tip (3b; 10b; 13b) is provided with the prismatic building material (2; 6;
7) A pair of bolt penetration side surfaces (2a, 2b; 6b, 6)
C; 7a, 7b) to penetrate the prismatic building material (2; 6;
7) penetrating bolt (3; 10; 1) projecting from the side surface
3), (A03) The through-bolt (3; 10; 13) has a through-hole (18a; 21a, 23a) through which the bolt tip (3b; 10b; 13b) passes. 6b, 6C; 7a, 7b) and a pair of bolt penetration portions (18; 21, 23) provided at both ends of the bolt penetration portions (18; 21, 23) arranged in contact with one of the bolt penetration portions (18; 21, 23). Connection side surface (2c, 2c; 6d, 6d; 7)
c, 7c) and a pair of prismatic side holding portions (19, 1)
9; 22, 24) and (A), (A)
04) The threaded bolts (18; 21, 23) of the prism holding metal fitting (K) are screwed into the end portions (3b; 10b; 13b) of the through bolts passing through the prism holding metal (K). Tightening nuts (5; 12; 16) which press against the projecting surfaces (2b; 6C; 7b).

(Operation of the First Invention)
In the connection structure of the prismatic building material (2; 6; 7) and the through bolt (3; 10; 13) of the invention, the through bolt (3;
10; 13) Bolt tip (3b; 10b; 13b)
A bolt insertion hole (2d; 6e; 7d) formed between a pair of bolt penetration side surfaces (2a, 2b; 6b, 6C; 7a, 7b) of the prismatic building material (2; 6; 7). (2a; 6b; 7a) (the pair of bolt penetration side surfaces (2
a, 2b; 6b, 6C; 7a, 7b) from the bolt projecting surface (2b; 6c; 7b) (the pair of bolt penetrating side surfaces (2a, 2b; 6b, 6C; 7a, 7).
b) and penetrates the other side surface). The protruding bolt tips (3b; 10b; 13b) penetrate through the through holes (18a; 21a, 23a) of the bolt penetration portions (18; 21, 23) of the prism holding metal fitting (K), and hold a pair of side surfaces of the prism. The pair of connection side surfaces (2c, 2c; 6d, 6d; 7c, 7) by the portions (19, 19; 22, 24).
c) (the pair of bolt penetration side surfaces (2a, 2b; 6b,
6C; 7a, 7b), a pair of side surfaces which are connected to each other are clamped, and a nut (5; 12, 16) is screwed into the bolt tip (3b; 10b; 13b) to tighten the prism. Bolt penetration (18; 21, 21) of clamping metal (K)
3) is pressed by the bolt protruding surfaces (2b; 6c; 7b), and the prism-shaped building material (2; 6; 7) and the prism holding fixture (K) are connected. At this time, the pair of prism side holding portions (19, 19; 2) of the prism holding metal fitting (K).
2, 24) sandwiches the pair of connecting side surfaces (2c, 2c; 6d, 6d; 7c, 7c) of the prismatic building material (2; 6; 7), so that the prismatic building material (2; 6). And 7) the occurrence of cracks in the bolt through-holes (2d; 6e; 7d) can be prevented.

(Specific Example 1 of Constituent Features of First Invention) In the first invention, the following constituent features (A05) can be provided. (A05) The bolt base end (3a; 10)
a; 13a) is fixed to the bolt fixing member (1; 8) by the through bolt (3; 10; 13). The constituent requirements (A
05), the bolt tip (3b; 10b; 13)
By screwing and tightening the tightening nut (5; 12; 16) to b), the bolt fixing member (1; 8), the through bolt (3; 10; 13), the prismatic building material (2; 6; 7) ) And the prism holding member (K), and at the same time, a pair of connecting side surfaces (2c, 2c; 6d, 6d, 6c) of the prismatic building material (2; 6; 7) by the pair of prism side holding portions of the prism holding member (K).
6d; 7c, 7c).

(Specific Example 2 of Constituent Requirements of First Invention) In the first invention, the following constitutional requirements (A06) can be provided. (A06) The bolt penetration side surface (2a, 2
b; 6b, 6C; 7a, 7b) having the same width as the bolt penetration portion (18) and the bolt penetration portion (18).
The prism holding fixture (K), comprising a U-shaped fitting having the pair of prism side holding parts (19, 19) integrally formed at both ends in the width direction. In the case where the above-mentioned configuration requirement (A06) is provided, the prism-shaped building material (2; 6;) is formed by one prism holding metal fitting (K) having a pair of prism side holding parts (19, 19).
7) a pair of connecting side surfaces (2c, 2c; 6d, 6d; 7)
c, 7c), the work of mounting the prism holding metal fitting (K) to the prismatic building material (2; 6; 7) is easy.

(Specific Example 3 of Constituent Features of First Invention) In the first invention, the following constituent features (A07) can be provided. (A07) The bolt penetration side surface (2a, 2
b; 6b, 6C; 7a, 7b) and not less than の of the width, and the bolt through holes (21a, 23
a) formed with the bolt penetration portions (21, 23) and the one prismatic side surface holding portion (22, 24) integrally formed at one end in the width direction of the bolt penetration portions (21, 23). It has two L-shaped fittings (K1, K2), and the two L-shaped fittings (K1, K2) have respective bolt penetration portions (21, 2).
When the bolt through-holes (21a, 23a) of 3) are arranged in an overlapping state, the prism-side holding portions (22, 24) of the two L-shaped brackets (K1, K2) are connected to the prism-shaped building material (2;
6; 7), the pair of connection side surfaces (2c, 2c; 6d, 6).
d; The prism holding metal fitting (K) formed so as to hold 7c, 7c). When the above-mentioned configuration requirement (A07) is provided,
If at least one bolt through hole (21a) of the two L-shaped fittings (K1, K2) is formed in the elongated hole extending in the width direction, the prism of each of the two L-shaped fittings (K1, K2) is formed. The interval between the side holding portions (22, 24) can be adjusted. In that case, a pair of connection side surfaces (2c, 2c; 6d, 6d; 7) is formed by one set of two L-shaped brackets (K1, K2).
c, 7c) various prismatic building materials (2; 6;
7) can be dealt with.

(Specific Example 4 of the Configuration Requirements of the First Invention) In the first invention or the specific example 1 of the configuration requirements of the first invention, the following configuration requirements (A08) and (A09) can be provided. is there. (A08) The bolt fixing member (1) for fixing the base end (3a) of the through bolt (3) such that the through bolt (3) is vertical and the bolt tip (3b) is disposed upward. (A09) The prismatic building material (2) through which the through bolt (3) penetrates and is disposed on the upper surface of the bolt fixing member (1). (A08), (A0
9), the through bolt (3) fixed to the bolt fixing member (1) passes through the bolt through hole (2d) of the prismatic building material (2) arranged on the upper surface of the bolt fixing member (1). I do. A pair of connections of the prismatic building material (2) is made by penetrating the prism holding metal (K) through the tip (3b) of the through bolt (3) and screwing and tightening the fastening nut (5). The side surfaces (2c, 2c) are paired with a pair of prism-side holding portions (19, 19; 22, 2, 2) of the prism-holding metal fitting (K).
In the state of being clamped by 4), the prism holding metal fitting (K) can be easily mounted on the prism-shaped building material (2).

(Embodiment 5 of Constituent Requirements of First Invention) In the first invention or any one of Embodiments 1 to 4, the following constitutional requirements (A08 ') and (A09') may be provided. It is possible. (A08 ') The bolt fixing member (1) which is a foundation installed on the ground, (A09') A bolt base end portion (3a) on the foundation
The said prism-shaped building material (2) which is a wood base which penetrated the penetration bolt (3) which was fixed, and was arrange | positioned on the upper surface of the said foundation. When the components (A08 ') and (A09') are provided, the through bolt (3) fixed to the foundation (bolt fixing member) (1) installed on the ground is disposed on the upper surface of the foundation (1). It penetrates through the bolt through hole (2d) of the timber base (square columnar building material) (2). A timber base (square pillar-shaped building material) (2) is obtained by passing a prism holder (K) through the tip (3b) of the through bolt (3) and screwing and tightening a fastening nut (5). Pair of connection side surfaces (2c, 2
c) to the prism side holding portion (19, 1) of the prism holding metal fitting (K).
9; 22, 24), the prism holding metal fitting (K) can be easily attached to the wood base (square pillar-shaped building material) (2).

(Specific Example 6 of the Constituent Elements of the First Invention) The connecting structure of the prismatic building material (6) and the through bolt (10) according to the concrete example 6 of the constituent elements of the first invention is the same as that of the first invention or the first invention.
In the specific examples 1 and 2 of the constituent features of the invention, the following constituent features (A010) and (A011) can be provided. (A010) A vertically arranged and horizontal bolt through hole (6
e) A horizontal timber supporting a horizontal timber (7) to which a base end portion (10a) of a through bolt (10) horizontally penetrating a vertical timber (6) is fixed and connected to the vertical timber (10). The bolt fixing members (8), (A)
[0111] The prismatic building material (6), which is the vertical wood through which the through bolt (10) penetrates. The constituent requirements (A01
0) and (A011), the through bolt (10) fixed to a horizontal timber support (bolt fixing member) (8) for supporting the horizontal timber (7) is provided with the vertical timber ( Horizontal bolt through hole (6e) of prismatic building material) (6)
Penetrate through. The tip (10) of the penetration bolt (10)
The pair of connection side surfaces (6b, 6c) of the vertical timber (the prism-shaped building material) (6) is formed by passing the prism holding metal (K) through the b) and screwing and tightening the tightening nut (12).
To the prism-side holding parts (19, 19;
In the state of being clamped by (22, 24), the prism holding metal fitting (K) can be easily attached to vertical wood (square pillar-shaped building material) (6).

(Second invention) The prismatic building material (2;
6; 7), a pair of side surfaces (2c, 2c; 6d, 6d; 7).
c, 7c) is characterized by having the following configuration requirement (B01). (B01) A plate-shaped bolt penetration portion (18) having a bolt penetration hole (2d; 6e; 7d) and the bolt penetration portion (18)
The said prism holding | maintenance metal fitting (K) comprised by the U-shaped metal fitting which has a pair of plate-shaped side surface holding | maintenance parts (19, 19) bent at right-angled at both ends.

(Operation of the Second Invention)
A prism holding member (K) for holding a pair of side surfaces of the prismatic building material (2; 6; 7) of the invention is a plate-shaped bolt penetration portion (18) having a bolt penetration hole (18a) and the bolt penetration portion (K). 18) and a U-shaped fitting having a pair of rectangular column side holding portions (19, 19) bent at right angles at both ends. Therefore, the plate-shaped bolt penetration part (18) of the prism holding fixture (K) is inserted into the bolt penetration hole (2d; 6).
e; 7d) in contact with the bolt penetration surface (2b; 6c; 7b) of the prismatic building material (2; 6; 7) on which
A pair of connecting side surfaces (2c, 2) of the prismatic building material (2; 6; 7) are formed by a pair of plate-like prism-side holding portions (19, 19).
c; 6d, 6d; 7c, 7c) (the prismatic building material (2; 6;
7) The side surface parallel to the bolt through hole (2d; 6e; 7d)) can be clamped. For this reason, cracks of the prismatic building material (2; 6; 7) can be prevented.

(Explanation of Constituent Requirements of the Second Invention) In the second invention, it is preferable that the prism holding member (K) is formed of a steel plate U-shaped member having a thickness of 5 mm or more. In that case, a strength can be obtained that can prevent cracks of the prismatic building material (2; 6; 7). In the second invention,
In the prism holding member (K), a pair of strength reinforcing portions (20, 20) extending in a direction connecting the pair of prism side holding portions (19, 19) includes the bolt penetrating portion (18) and a pair of prism side holding. It can be constituted by a steel plate U-shaped fitting provided continuously to the portions (19, 19). In this case, even if the thickness of the steel plate constituting the U-shaped bracket is thin, sufficient strength can be obtained by the pair of strength reinforcing portions (20, 20).

(Third invention) The prismatic building material of the third invention (2;
6; 7), a pair of side surfaces (2c, 2c; 6d, 6d; 7).
c, 7c) is characterized by having the following configuration requirement (C01). (C01) Plate-shaped bolt through-holes (21, 23) having bolt through-holes (21a, 23a) formed therein, and a prism-side holding portion (1) bent at a right angle at one end of the bolt through-holes (21, 23). 22, L) having two L-shaped brackets (K
1, K2), and the two L-shaped brackets (K
1, K2) are rectangular prism side holding portions of two L-shaped fittings (K1, K2) when the bolt through holes (21a, 23a) of the bolt through portions (21, 23) are arranged in an overlapping state. (22, 24) is a prismatic building material (2; 6;
7), a pair of side surfaces (2c, 2c; 6d, 6d; 7c, 7)
(c) The prism holding metal fitting (K) formed so as to hold c).

(Effect of the Third Invention) The third device having the above-described configuration
A pair of side faces (2c, 2c) of the prismatic building material (2; 6; 7) of the invention
2c; 6d, 6d; 7c, 7c), two Ls constituting the prism holding metal fitting (K).
The mold fittings (K1, K2) are composed of two L-shaped fittings (K1, K2).
When the bolt through-holes (21, 23) of 1) are arranged in a state where the bolt through-holes (21a, 23a) overlap with each other, the prism-side holding portions (2c, 2c) of the two L-shaped brackets (K1, K2).
2c; 6d, 6d; 7c, 7c) can sandwich a pair of side surfaces of the prismatic building material (2; 6; 7) having a substantially rectangular cross section. In a state where the bolt through holes (2d; 6e; 7d) of the two L-shaped fittings (K1, K2) overlap each other, the prism-shaped building material (2; 6, 7) and the L-shaped fittings (K1, K2). Through bolts (3;
10; 13). In that state,
Bolt tip (3b; of penetrating bolt (3; 10; 13))
10b; 13b) and the fastening nuts (5; 12; 16) are screwed together and tightened, so that the pair of prism-side holding portions (22, 24) of the prism-holding metal fitting (K) are connected to the prism-shaped building material (2;
6; 7), a pair of side surfaces (2c, 2c; 6d, 6d; 7).
c, 7c), the prismatic building material (2; 6;
7) A prism holder (K) can be attached. In that case, the occurrence of cracks in the prismatic building material (2; 6; 7) can be prevented.

(Explanation of Constituent Requirements of Third Invention) In the third invention, it is preferable that the prism holding member (K) is formed of a steel plate L-shaped member having a thickness of 5 mm or more. In that case, a strength can be obtained that can prevent cracks of the prismatic building material (2; 6; 7). Further, in the prism holding fixture (K), a strength reinforcing portion (25, 26) extending in a direction connecting the pair of prism side holding portions (22, 24) includes the bolt penetration portions (21, 23) and the prism side holding. Part (22,
24) and the two L-shaped brackets (K
1, K2).

The two L-shaped brackets (K1, K2)
Is a bolt through hole (2) of each bolt through portion (21, 23).
1a, 23a) are provided in the bolt penetration portion (23) of one L-shaped fitting (K2) in a state where they are arranged in an overlapping state, and the bolt penetration portion (21) of the other L-shaped fitting (K1).
A protruding portion (27) protruding to the side, and a protruding portion housing portion (28) provided on the bolt penetrating portion (21) side of the other L-shaped bracket (K1) and capable of housing the protruding portion (27). Can be provided. Then, the protruding portion accommodating portions (28) of the two L-shaped brackets (K1, K2) and the protruding portions (27) accommodated in the two L-shaped metal fittings (K1, K2) form the pair of prism-side holding portions (22, 24). It is possible to configure so as to be relatively movable in the connecting direction. In that case, the pair of L
Side holding parts (22, 24) of the prisms (K1, K2)
Can be easily adjusted. Further, the projecting portion accommodating portion (2) of the two L-shaped brackets (K1, K2) is provided.
8) and the protruding portion (27) accommodated in the two L-shaped fittings (K1, K2) in a direction perpendicular to the direction connecting the pair of prismatic side holding portions (22, 24). It is possible to constitute so as not to be relatively movable in the direction along the contact surface of the bolt penetration portion (21a, 23a). In this case, 2
Each of the L-shaped fittings (K1, K2) has a bolt penetrating portion (K1, K2) in a direction perpendicular to the direction connecting the pair of prism-shaped side holding portions (22, 24) and the two L-shaped fittings (K1, K2). 21a,
Since the relative fluctuation in the direction along the contact surface 23a) is eliminated, their positions are stabilized.

(Specific Example 1 of Constituent Features of Second or Third Invention) In any of the second to third inventions, the following constituent feature (C02) can be provided. (C02) The bolt through hole (18) formed by a long hole.
a; 21a). When the component (C02) is provided, the position of the prism holding metal (K) with respect to the width direction of the prismatic building material (2; 6; 7) in a state where the through bolts (3; 10; 13) are penetrated. Can be adjusted. By the position adjustment, the pair of side surfaces (2c, 2c, 2) of the prismatic building material (2; 6; 7)
2c; 6d, 6d; 7c, 7c)
The prism holding member (K) and the pair of prism side holding portions (19, 19; 22, 24) can be easily moved. Therefore, the mounting work of the prism holding metal fitting (K) to the prismatic building material (2; 6; 7) is easy.

(Specific Example 2 of Constituent Features of Second or Third Invention) In any of the second to third inventions, the following constituent feature (C03) can be provided. (C03) nail holes (19a, 19a; 22a,
24a) formed with the pair of prismatic side holding portions (1).
9, 19; 22, 24). When the component (C03) is provided, the nail hole (19a, 19a; 22a, 24a)
And a pair of prism-side holding portions (19, 19) of the prism-holding metal fitting (K) by nails struck into the prism-shaped building material (2; 6; 7).
19; 22, 24) can be fixed. The mounting position of the prism holding member (K) on the prism-shaped building material (2; 6; 7) is stabilized.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the embodiments. (Embodiment 1) FIG. 1 is a view showing a main part of a structural element of a house using a prism holder of Embodiment 1 of the present invention, and is a view corresponding to FIG. 9 of the prior art, and FIG. Perspective view,
1B is a front view as viewed from the arrow IB in FIG. 1A, and FIG. 1C is a side view as viewed from the arrow IC in FIG. 1A. FIG. 2 is an explanatory view of the first embodiment of the prism holding metal according to the present invention. FIG. 2A is a perspective view, and FIG. 2B is an enlarged view of an adjacent portion of the prism holding metal shown in FIG. 1C. In the description of the main parts of the components of the house using the prism holder of the first embodiment shown in FIG. 1, the same components as those of the conventional house shown in FIG. The same reference numerals are used, and the detailed description is omitted.

In FIG. 1, a pair of mutually opposite bolt penetrating side surfaces 2a, 2b of a prismatic building material 2 constituting a base.
One of the side surfaces (the projecting surface of the through bolt 3) 2b is provided with a prism holding metal fitting K. The prism holding fixture K is a U-shaped fitting made of a steel plate having a thickness of 5 mm or more, and has a bolt penetrating portion 18 having substantially the same width as the bolt protruding surface 2b of the prismatic building material 2 and both ends in the width direction of the bolt penetrating portion 18. And has a prism-side holding portion 19, 19 formed by being bent at a right angle. A bolt through hole 18a is formed in the bolt through portion 18, and the bolt through hole 18a is a long hole extending in the width direction. Nail holes 19a, 19a are formed in the pair of prism-side holding portions 19, 19, respectively.

The bolt penetrating portion 18 of the prism holding fixture K is in contact with the bolt projecting surface 2b of the prismatic building material 2, and the prismatic side holding portions 19, 19 are connected to a pair of connecting side surfaces 2 of the prismatic building material 2.
c, 2c are arranged in a sandwiched state. The bolt tip 3b of the penetration bolt 3 penetrates the bolt penetration hole 2d of the prismatic building material 2 and further penetrates the bolt penetration hole 18a of the bolt penetration part 18 of the prism clamping metal K. A tightening nut 4 is screwed to the bolt tip 3b and tightened. For this reason, the prism holding metal fitting K is formed by the pair of connecting side surfaces 2 c,
2c is mounted on the prism-shaped building material 2 while being sandwiched.

FIG. 3 is an enlarged view of a main part of FIG. 1A. In FIGS. 1 and 3, a bolt protruding surface (a pair of bolt penetrating surfaces 6b, 6b,
The prism holding metal K in which the bolt penetrating portion 18 (see FIG. 2A) is pressed against the one of the 6c) 6c has a pair of the prism side holding portions 19, 19, the connection side (bolt parallel side) 6d of the column 6. , 6d. Then, the bolt 10 of the connecting fitting 8 for connecting the column 6 and the cross beam (square column-shaped building material) 7 passes through the horizontal bolt through hole 6 e of the column 6, and furthermore, the bolt through hole 18 a of the bolt through portion 18 and the washer 11. Penetrates. A tightening nut 12 is screwed into a bolt tip 10b of the bolt 10 and tightened.

A bolt penetrating portion 18 (see FIG. 2A) has a bolt projecting surface (a bolt tip portion 13b of the penetrating bolt 13) which is one of a pair of bolt penetrating surfaces 7a and 7b of the cross beam 7.
Of the prism-shaped holding member K pressed against the prism-shaped building material side surface 7b from which the pair of prism-shaped side members 19, 19 are connected.
Are arranged so as to sandwich the connection side surfaces (bolt parallel side surfaces) 7c, 7c. Then, the cross beam support portion 9 of the connecting fitting 8 for connecting the column 6 and the cross beam 7 and the through bolt 13 that penetrates the cross beam 7 from the lower side to the upper side further form the bolt penetrating portion 1.
8 through the bolt through hole 18a and the washer 15. A tightening nut 16 is screwed into a bolt tip 13 b of the through bolt 13.

(Operation of Embodiment 1) The through bolt 3 shown in FIG. 2B has a base end 3a fixed to a foundation (bolt fixing member) 1 installed on the ground and extends upward. The bolt tip 3b passes through a bolt through hole 2d of a wood base (square columnar building material) 2 arranged on the foundation 1. The bolt (3) of the base (square column-shaped building material) 2 is screwed into the bolt tip 3b of the through bolt 3 through the bolt through hole 18a and the washer 4 of the prism holder K, and then screwed into the nut 5. In a state in which the pair of connection side surfaces 2c, 2c are clamped by the prism-side clamping members 19, 19 of the prism-clamping bracket K, the prism-clamping bracket K can be easily mounted on the base (square-column-shaped building material) 2. From the nail hole 19a to the base (square columnar building material) 2
You can also drive a nail into it.

Bolt through-holes 18a of the prism holding members K, K are provided at the bolt tip portions 10b, 13b of the through-bolts 10, 13 which pass through the bolt through-holes 6e, 7d of the prismatic building materials 6, 7 shown in FIG. The pair of connecting side surfaces 6d, 6d and 7c, 7c of the prism-shaped building materials 6, 7 are clamped by the prism-side clamping members K, 19, which are penetrated. In this state, by tightening the tightening nuts 12, 15 screwed to the bolt tip portions 10b, 13b, the prism holding members K, K can be easily mounted on the prism-shaped building materials 6, 7. As described above, a pair of connection side surfaces (bolt parallel side surfaces) 2c, 2 of the base 2, the column 6, and the cross beam 7 are provided.
Since c, 6d, 6d and 7c, 7c are sandwiched by the pair of prism-side clamping portions 19 of the prism-clamping bracket K, the occurrence of cracks is prevented. Also,
Since the prism holding fixture K is formed of a U-shaped fitting made of a steel plate having a thickness of 5 mm or more, it can have a strength capable of preventing the occurrence of the crack.

(Embodiment 2) FIG. 4 is an explanatory view of Embodiment 2 of a prism holder of the present invention. FIG. 4A is a perspective view corresponding to FIG. 2A of Embodiment 1 and FIG. 4B. FIG. 4B is a sectional view taken along the line IVB-IVB of FIG. 4A. The prism holding metal K of the second embodiment shown in FIG. 4 extends along a side end of the prism holding metal K shown in FIG. 2A of the first embodiment that extends in the direction connecting the pair of prism side holding members 19. Thus, a strength reinforcing portion 20 is provided continuously to the bolt penetrating portion 18 and the pair of rectangular column side holding portions 19, 19. The strength reinforcing portion 20 is formed of a U-shaped steel plate welded to both ends of the prism holding metal K in a direction perpendicular to the direction connecting the pair of prism side holding portions 19, 19. In this case, even if the thickness of the steel plate constituting the U-shaped bracket is small, sufficient strength can be obtained by the strength reinforcing portion.

(Embodiment 3) FIG. 5 is an explanatory view of Embodiment 3 of a prism holding member of the present invention. FIG. 5A is a perspective view corresponding to FIG. 2A of Embodiment 1 and FIG. 5B. FIG. 5B is a view showing a use state of the prism holding metal fitting of FIG. 5A and is a view corresponding to FIG. 2B of the first embodiment. In FIG. 5, the prism holding metal fitting K is composed of two L-shaped fittings K1 and K2. The L-shaped bracket K1 is formed integrally with a bolt penetrating portion 21 having a width equal to or less than the width of the bolt penetrating side surface 2a or 2b of the prismatic building material 2 and a width equal to or greater than 幅 of the width, and at one end in the width direction. And two prismatic side holding portions 22. The bolt penetration portion 21 has an elongated through hole 21a elongated in the width direction, and the prism-side holding portion 22 has a nail hole 22a. Further, the L-shaped bracket K2 is also similar to the L-shaped bracket K1,
The bolt penetrating side surface 2a or 2b of the prismatic building material 2
The bolt penetrating portion 23 has a width equal to or less than the width of, and has a width equal to or more than の of the width, and the one prismatic side holding portion 24 integrally formed at one end in the width direction. A circular through hole 21 a is formed in the bolt through portion 22, and a nail hole 24 a is formed in the prism side surface holding portion 24.
The two L-shaped fittings K1 and K2 are connected to the respective bolt penetration portions 2
When the bolt through-holes 21a and 23a of the first and second bolts 21a and 23a are arranged so as to overlap with each other, the pair of connection side surfaces 2c of the prism-shaped building material 2 are formed by the rectangular-side holding portions 22 and 24 of the two L-shaped fittings K1 and K2. , 2c.

(Operation of the Third Embodiment) The prism holding fixture K of the third embodiment having the above-described configuration is composed of two L-shaped fixtures K.
1 and K2, one of the bolt through holes 21a is formed in the shape of a long hole extending in the width direction, so that the distance between the prism-side holding portions 22 and 24 of each of the two L-shaped brackets K1 and K2 is adjusted. can do. Therefore, a set of two L
By the metal molds K1 and K2, it is possible to cope with various prism-shaped building materials 2 in which the distance between the pair of connection side surfaces 2c and 2c is different.

(Embodiment 4) FIG. 6 is an exploded perspective view of Embodiment 4 of a prism holder of the present invention, and corresponds to FIG. 5A of Embodiment 3 described above. The prism holding fixture K of the fourth embodiment shown in FIG. 6 has two L-shaped fittings K1 and K2 like the prism holding fixture K of the third embodiment shown in FIG. 5A.
It consists of. L-shaped bracket K of the fourth embodiment
1 is provided with a pair of rib-like strength reinforcing portions 25, 25 along the L-shaped side end formed by the side ends of the bolt penetration portion 21 and the prismatic side holding portion 22. Further, the L-shaped bracket K2 includes a bolt penetrating portion 23 and a prism-side holding portion 24.
A pair of rib-like strength reinforcing portions 26, 26 are provided along the L-shaped side end formed by the side ends. Further, the pair of rib-shaped strength reinforcing portions 25, 2 of the L-shaped bracket K1.
5 is formed to be slightly wider than the inner space between the pair of rib-shaped strength reinforcing portions 26, 26 of the L-shaped metal fitting K2, so that the bolts of the two L-shaped metal fittings K1, K2 are formed. In a state where the bolt penetration portions 21a and 23a of the penetration portions 21 and 23 are arranged in an overlapping state, the L-shaped bracket K2
Enters the inside of the L-shaped bracket K1. The other configuration is the same as that of the third embodiment shown in FIG.
When the rib-shaped strength reinforcing portions 25 and 26 are provided, sufficient strength can be obtained by the strength reinforcing portions 25 and 26 even when the thickness of the steel plate forming the L-shaped brackets K1 and K2 is small.

(Embodiment 5) FIG. 7 is an exploded perspective view of Embodiment 5 of a prism holder of the present invention, and corresponds to FIG. 5A of Embodiment 3 described above. The prism holding fixture K of the fifth embodiment shown in FIG. 7 includes two L-shaped fittings K1 and K2, like the prism holding fixture K of the third embodiment shown in FIG. 5A. Bolt penetrating part 2 of L-shaped bracket K1
1 is provided with a protrusion housing portion 28, and the L-shaped bracket K2 is provided.
The bolt penetration portion 23 is provided with a protrusion 27,
Bolt penetration portions 21 and 2 of the two L-shaped fittings K1 and K2
In a state where the three bolt through-holes 21a and 23a are arranged so as to overlap with each other, the protrusion 27 is housed in the protrusion housing 28. When the projecting portion housing portion 28 of the L-shaped fitting K1 and the projecting portion 27 of the L-shaped fitting K2 are provided, the projecting portion receiving portion 28 and the projecting portion 27 accommodated in the projecting portion receiving portion 28 are paired with each other. Prism side holding part 2
It is possible to constitute so as to be relatively movable in the direction connecting the two 24. In this case, the pair of L-shaped brackets K1, K
It is possible to easily adjust the interval between the two prism-side holding portions 22, 24. Further, the pair of L-shaped brackets K1, K
The two projecting portion accommodating portions 28 and the projecting portions 27 accommodated therein are arranged in a direction perpendicular to a direction connecting the pair of prism-side holding portions 22 and 24 and a pair of L-shaped fittings K1 and K2.
Can be relatively immovable in the direction along the contact surface of each of the bolt penetration portions 21 and 23. In this case, the pair of L-shaped fittings K1 and K2 is in a direction perpendicular to the direction connecting the pair of prism-shaped side holding portions 22 and 24 and along the contact surfaces of the bolt penetration portions 21 and 23 of the pair of L-shaped fittings. Since there is no relative variation in direction, their positions are stable.

(Modifications) Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above-described embodiments, but falls within the scope of the present invention described in the appended claims. Thus, various changes can be made. Modified embodiments of the present invention will be exemplified below. (H01) In the third to fifth embodiments of the present invention, FIG.
As shown in the figure, the thickness of the bolt penetrating portion 23 adjacent to the prismatic side holding portion 24 of the L-shaped bracket K2 is increased, and the thickened portion is the bolt protruding surface 2b, 6 of the prismatic building material 2, 6, 7.
It can be configured to be in contact with c, 7b. (H02) In the present invention, the nail holes 19a,
22a and 24a can be omitted. (H03) In the embodiments of the present invention, the bolt through holes 18a and 21a of the prism holding fixture K can be replaced with fool holes instead of long holes. Further, in a state in which the prism holding member K is fixed to the prismatic building materials 2, 6, 7, the width of the bolt projecting surfaces 2b, 6c, 7b of the prismatic building materials 2, 6, 7 and the bolt penetration portion of the prism holding member K are provided. 18; 21 and 23, the same width as the outer diameter of the through bolts 3, 10, 13 can be used instead of the long hole.

[0041]

The connection structure of the prismatic building material and the penetrating bolt according to the present invention described above, and the prism holder used in the connection structure can provide the following effects (E01) and (E02). (E01) It is possible to prevent the occurrence of cracks in the portions of the prismatic building material where the bolt through holes are formed. (E02) When an earthquake occurs, it is possible to prevent the occurrence of cracks, splits, or breaks in the prismatic building materials constituting the house, and to prevent damage to the house.

[Brief description of the drawings]

FIG. 1 is a view corresponding to FIG. 9 of the related art, showing a main part of a constituent element of a house using a prism holder of the first embodiment of the present invention, and FIG. 1A is a perspective view; , FIG. 1B
1A is a front view as viewed from the arrow IB in FIG. 1A, and FIG. 1C is a side view as viewed from the arrow IC in FIG. 1A.

[FIG. 2] FIG. 2 is a first embodiment of a prism holding fixture of the present invention.
2A is a perspective view, and FIG. 2B is an enlarged view of an adjacent portion of the prism holding metal member shown in FIG. 1C.

FIG. 3 is an enlarged view of a main part of FIG. 1A.

[FIG. 4] FIG. 4 is a second embodiment of a prism holding metal fitting of the present invention.
4A is a perspective view corresponding to FIG. 2A of the first embodiment, and FIG. 4B is an IVB-I of FIG. 4A.
It is a VB line sectional view.

FIG. 5 is a view showing a third embodiment of a prism holding metal according to the present invention;
FIG. 5A is a perspective view corresponding to FIG. 2A of the first embodiment, and FIG. 5B is a view showing a use state of the prism holder of FIG. 5A and FIG. 2B of the first embodiment. FIG.

FIG. 6 is a fourth embodiment of the prism holding metal according to the present invention.
FIG. 5B is an exploded perspective view corresponding to FIG. 5A of the third embodiment.

FIG. 7 is a view showing a fifth embodiment of the prism holding fixture of the present invention.
FIG. 5B is an exploded perspective view corresponding to FIG. 5A of the third embodiment.

FIG. 8 is a modified example (H0) of the prism holding fixture of the present invention.
8A is a perspective view corresponding to FIG. 5A of the third embodiment, and FIG. 8B is a view corresponding to FIG. 5B.

9 is an explanatory view of a conventional prismatic building material and through bolt connection structure used in a house, FIG. 9A is a perspective view, and FIG. 9B is a view as seen from the arrow IXB in FIG. 9A. FIG. 9C is a sectional view taken along line IXC-IXC of FIG. 9A.

FIG. 10 is an explanatory diagram of an example of a connecting fitting used when connecting a cross beam to a pillar of a house.

FIG. 11 is a view showing a state where a crack is generated in a connection portion of a prismatic building material used in the house shown in FIG. 9 with a through bolt, FIG. 11A is a perspective view, and FIG.
FIG. 11A is a front view as seen from the arrow XIB in FIG.
1C is a sectional view taken along the line XIC-XIC in FIG. 11A.

[Explanation of symbols]

K: prism holding metal fittings, K1, K2: L-shaped metal fittings, 1, 8: fixing member, 2, 6, 7 ... prismatic building material, 2a, 2b, 6b,
6c, 7a, 7b ... bolt penetration side surface, 2c, 6d, 7c
... Connection side surface, 2d, 6e, 7d. Bolt through hole (square columnar building material), 2a, 6b, 7a.
c, 7b: bolt protruding surface, 3, 10, 13: through bolt, 3a, 10a, 13a: bolt base end, 3b, 10
b, 13b: bolt tip, 5, 12, 16: tightening nut, 18, 21, 23 ... penetrating part, 18a, 21a, 23
a: through-holes (square column holding metal fittings), 19, 22, 24: square column side holding parts, 19a, 22a, 24a: nail holes, 20, 2
5, 26 ... strength reinforcing portion, 27 ... projecting portion, 28 ... projecting portion accommodation portion,

Claims (3)

[Claims] 1. A connection structure of a prismatic building material and a through bolt, characterized by having the following requirements (A01) to (A04): (A01) having four side surfaces having a rectangular cross section, A prismatic building material in which a bolt through hole is formed vertically between a pair of opposite side surfaces of the four side surfaces, wherein the four side surfaces are a bolt insertion surface and a bolt protrusion surface where the bolt through hole opens. (A02) a bolt tip portion and a portion opposite to the rectangular pillar-shaped building material formed by a pair of bolt penetration side surfaces having a pair and a pair of connection side surfaces parallel to the bolt penetration hole and connecting the pair of bolt penetration surfaces. A penetrating bolt having a bolt base end, wherein the bolt tip penetrates a pair of bolt penetration side surfaces of the prismatic building material and projects from the side surface of the prismatic building material; (A03) a bolt tip portion of the penetration bolt A bolt penetrating portion having a through hole therethrough and arranged in contact with one of the bolt penetrating side surfaces, and a pair of prismatic side clamping portions provided at both ends of the bolt penetrating portion to clamp the pair of connection side surfaces; (A04) a fastening nut that is screwed into a tip end of the through bolt to penetrate the prism holding fixture and presses a bolt penetration portion of the prism holding fixture against one of the bolt penetration side surfaces. And (B01) a plate-shaped bolt penetrating portion having a bolt through hole and both ends of the bolt penetrating portion. The said prism holding | maintenance metal fitting comprised with the U-shaped metal fitting which has a pair of plate-shaped square side holding parts bent at right angles by the part. 3. A prism holding member for holding a pair of side surfaces of a prismatic building material having the following configuration requirement (C01): (C01) a plate-shaped bolt penetration portion having a bolt through hole formed therein; and the bolt penetration portion. Are formed by two L-shaped fittings having a prismatic side holding portion bent at a right angle at one end of the two L-shaped fittings.
The mold fittings are configured such that when the bolt penetration holes of the bolt penetration portions are arranged in an overlapping manner, the prismatic side clamping portions of the two L-shaped fittings clamp a pair of side surfaces of the prismatic building material having a substantially rectangular cross section. The formed prism holding metal fitting.