JPH10299087A - Connection joint metal fixture and splice joint metal fixture in wooden structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily realize sufficient joint strength in the case a beam is connected to a column. SOLUTION: A connection joint metal fixture is constituted of a pair of symmetrical hook members 11 and 11 forming mounting sections 11a and interlocking sections 11b by folding a plate material at a right angle. The hook members 11 and 11 overlap the mounting sections 11a and 11a and are fixed to a column P through interlocking bolts 21, 21..., and a beam B can be connected to the column P with the interlocking sections 11b and 11b through interlocking bolts 22 and 22 and a lock pin 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Joints and fittings for wooden buildings used when joining large and small horizontal members (hereinafter simply referred to as beams) such as girders and foundations, and when jointing beams in the longitudinal direction. About.

[0002]

2. Description of the Related Art In a wooden building, when a column and a beam are connected to each other, a metal fitting for connecting the column may be used.

[0003] A conventional metal fitting for joints uses one sheet of material as U
It is configured by folding back into a letter shape to form a mounting portion and a pair of locking portions, a plurality of bolt holes are formed in the mounting portion, and an upward hook is formed in each locking portion. I have.
Thus, the column and the beam can be joined to each other by fixing the bolt to the side surface of the column via the attachment portion and locking the bolt for penetrating the beam to the hook. However, a storage groove for inserting each locking portion is pre-cut at the opening of the beam. On the other hand, when jointing a beam in the longitudinal direction, it is common to join the beam by joint processing at the tip of the beam.

[0004]

According to the former of the prior art, since the connection fitting is formed from a single plate, the strength of the mounting portion cannot be set sufficiently high. When a heavy load is applied to the beam, there is a problem that the mounting portion is deformed due to local buckling, and a predetermined frame strength cannot be obtained. This is because, if the thickness of the mounting portion is increased to increase the strength, the thickness of the locking portion inserted into the storage groove at the opening of the beam becomes excessively large, which results in the loss of the strength of the beam. In the case of the latter, since the beam end of the beam must be jointed into a complicated shape, there is a problem that when the laminated wood is used for the beam, the laminated wood is easily chipped and the material yield is poor.

Accordingly, an object of the present invention is to improve the strength of the mounting portion by combining a pair of hook members in view of the problem of the prior art, and it is possible to easily realize a predetermined shaft assembly strength. It is another object of the present invention to provide a joint for fitting and a joint for fitting in a wooden building which can be suitably used for a laminated wood.

[0006]

According to a first aspect of the present invention for achieving the above object, the present invention comprises a pair of symmetrical hook members. Each of the hook members is formed by bending a plate member at a right angle to a mounting portion. The gist of the invention is to form a locking portion, form a mounting bolt hole in the mounting portion, and form an upward hook in the locking portion.

[0007] The hook can be formed at an upper part with a slope facing the mounting portion.

Further, a pin hole for a lock pin can be provided in the locking portion, and a plurality of hooks can be formed in different heights.

A second aspect of the present invention comprises a pair of hook members of the same shape, each of which has a bolt hole for mounting along one side of the plate member and an upward hook on the other side. This is the gist.

[0010]

According to the structure of the first aspect of the present invention, the pair of hook members are formed by bending the plate material at right angles to form the mounting portion and the locking portion, so that the mounting portions are overlapped and fixed to the pillar. Thus, the strength of the mounting portion can be significantly improved without increasing the thickness of the locking portion. This is because the thickness of the mounting portion at this time is substantially equivalent to twice the thickness of the locking portion. In general, the local buckling strength of the mounting portion is preferably larger than the tensile strength of the mounting bolt because deformation of the mounting portion does not precede.

When a slope is formed on the upper part of the hook, the upper part of the hook is obliquely expanded through the slope,
The locking bolt mounted on the beam can easily enter the hook, and the locking bolt moves along the slope, so that the small opening of the beam can be easily brought into close contact with the pillar.

If a pin hole for a lock pin is formed in the locking portion, the beam can be reliably prevented from coming off by driving the lock pin into the pin hole from the side surface of the beam. It is preferable that the lock pin is subjected to a knurling or other retaining process on the outer peripheral surface.

[0013] When a plurality of hooks are formed in the locking portion at different heights, the beam can be locked to the locking portion via a plurality of bolts corresponding to each hook. In addition, the connection can be easily performed.

According to the structure of the second aspect of the invention, the pair of hook members have the bolt hole side attached to the opening of one beam via a mounting bolt inserted into the bolt hole, and the other hook member is used for locking the other beam. The beam can be jointed in the longitudinal direction by locking the bolts on the hooks. However, at the tip of each beam, a storage groove for inserting a hook material is precut.

[0015]

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

A connection fitting for a wooden building comprises a pair of symmetric hook members 11, 11 (FIGS. 1 and 2).

The hook members 11 are formed by bending an iron plate having a predetermined thickness t at a right angle, and attaching the hooks 11a and the locking portions 1a.
1b is formed. The mounting portions 11a and the locking portions 11b of the hook members 11 are such that one width a1 and b1 are different from the other widths a2 and b2 by a1 = a2 + t and b1 = b2 + t.
Is set to The mounting portion 11a has a bolt hole 11
are formed up and down, and a plurality of upward hooks 11d and 11d are formed in the engaging portion 11b so as to be vertically different. Each hook 11d has an upper surface formed with a slope 11d1 facing the mounting portion 11a (FIG. 3). Further, a pin hole 11e is formed in a lower portion of the locking portion 11b.

The joint for metal fittings in such a wooden building uses the pair of hook members 11, 11... To face each other to join the beams B, B to the column P from both sides. (FIGS. 1 and 3).

The hook members 11, 11 are arranged such that the mounting portions 11a, 11a are overlapped for each pair via common bolts 21, 21, ..., washers 21a1, 21a1, ..., lock nuts 21a, 21a, .... And is attached to both sides of the pillar P. However, on both sides of the pillar P, shallow mounting grooves P1, P1 corresponding to the mounting portions 11a, 11a are precut. Also, the lowermost bolt 21 has
Nipping nuts 21b, 21b
Is installed. In addition, pinch nuts 21b, 21b
Are set at the same height as the bottom surface of the mounting groove P1.

At the fore end of each beam B, an escape groove B1 for accommodating the heads of the bolts 21, 21 or the lock nuts 21a, 21a, and the locking portions 11b, 11 of the hook members 11, 11 are provided.
The storage grooves B2, B2 for inserting b are precut (FIGS. 1 and 2). In addition, each of the hook members 1 is attached to the beam B.
The bolt holes B3, B3, and the pin hole B4 are formed in the storage grooves B so as to correspond to the hooks 11d, 11d and the pin hole 11e.
2 and B2, and locking bolts 22 are mounted in the respective bolt holes B3 via seat plates 22a, 22a and nuts 22b.

Therefore, the beams B, B are respectively connected to the pair of hook members 11, 11 on one side of the column P by the locking portions 11b, 1B.
1b into the storage grooves B2, B2, and the locking bolt 2
By hooking the hooks 2 and 22 to the hooks 11d, 11d from above, it is possible to join the columns P to the ends (FIGS. 2 and 3). Further, each beam B is provided with a lock pin 2 in a pin hole 11e of the hook member 11, 11 and a pin hole B4 of the beam B.
3 from the side, the locking portions 11b, 11
b can be prevented from coming off (FIGS. 1 and 3).
In addition, the lock pin 23 has a tip on the driving side tapered, and a knurl for retaining is formed on the outer peripheral surface.

The pinching nuts 21b, 21b mounted on the lowermost mounting bolts 21 are used to hold the hook members 11, 11 when the beam B is subjected to a downward bending moment.
1a and 11a are prevented from sinking into the pillar P. That is, the pinch nuts 21b, 21b can effectively reinforce the column P against the compressive stress applied to the column P via the beam B, and are particularly effective when the column P is a laminated material. is there.

When the beam B is joined to one side of the column P (FIG. 4), a common pressing plate 21c and bolt 2
A pair of hook members 11, 11 may be attached via 1, 21,. Here, screw nails 26, 26 are used instead of the pinching nuts 21b, 21b for reinforcing the column P. However, regardless of FIG. 4, it is sufficient that the screw nails 26, 26 are generally provided so as to correspond only to the lower part of the beam B. Unless there are special circumstances, it is not necessary to provide the screw nails even to the upper part of the beam B. Absent. Note that FIG. 4B is the same as FIG.
FIG.

When the beams B are joined to two or more surfaces of the column P (FIG. 5), a pair of hook members is provided for each beam B by combining the mounting modes shown in FIGS. 11, 1
Use 1. For example, beams B, B... Can be joined in a cross shape to the four surfaces of the pillar P by combining two sets of the mounting modes of FIG. 1 (FIG. 5A), and FIGS.
4 can be joined to the three surfaces of the pillar P in a T-shape (FIG. 4B).
By combining two sets of the above-mentioned mounting modes, the joint can be joined in an L-shape to two adjacent surfaces of the pillar P (FIG. (C)). In addition, in FIG. 5, the mounting bolts 21, 21... That penetrate the column P and are orthogonal to each other are arranged vertically differently (FIG. 6). However, FIG.
FIG. 4B is a view corresponding to the view taken along the line YY in FIG.

[0025]

[Other Embodiments] The plate material forming the hook material 11 of FIG. 1 can be formed as a small hook material 12 at the upper part and a medium hook material 13 at the lower part by dividing vertically at the middle part. Yes (Figure 7). However, the alternate long and short dash line in the same figure shows a fold curve which is a boundary between the attaching portions 12a, 13a of the hook members 12, 13, and the locking portions 12b, 13b. Like the hook member 11, the hook member 12 has bolt holes 12c, 12c formed in the mounting portion 12a, and the hook portion 12d with the slope 12d1 and the pin hole 12e are formed in the locking portion 12b. Also, the hook material 13 is
Similarly to the above, bolt holes 13c, 13c are formed in the mounting portion 13a, and a hook 13d with a slope 13d1 and a pin hole 13e are formed in the locking portion 13b.

The small hook members 12, 12...
A pair of beams B, B having a small cross-section at the mouth of the base, for example, can be joined to the column P by attaching one pair each to the two surfaces of the column P face-to-face via the surfaces 1 and 21 (FIG. 8). it can. However, a locking bolt 22 and a lock pin 23 are attached to each beam B so as to correspond to the hooks 12d and 12d of the hook members 12 and the pin holes 12e and 12e. The hook members 12, 12 can also be used when fixing the beam B to the upper end of the column P (FIG. 9). That is, the hook members 12, 12
By attaching the bolt 22 at the upper end of the column P to the hooks 12 d, 12 d and attaching the lock pin 23 to the beam B, the beam B is joined to the upper end of the column P. it can.

On the other hand, the medium-sized hook members 13, 13 can be used when joining the beams B, B at a right angle (FIG. 9). However, the side of one beam B is
An engagement groove Ba for engaging a tenon of a wooden mouth is formed. Therefore, the hook members 13, 13 are attached to the engagement grooves Ba of one beam B via the holding plate 21c, the bolts 21, 21, and the other beam B is connected via the bolt 22, the lock pin 23. Thereby, the beams B and B can be joined to each other. In addition, the hook members 13 and 13 can also be used at the time of joining the medium-sized beam B to the column P as in FIG.

The plate material forming the hook members 11 shown in FIG. 1 is a flat plate and is provided with bolt holes 14 for mounting along one side.
c, 14c... (FIGS. 10 and 11), and by forming upward hooks 14d, 14d on other sides, beams B,
Hook material 1 of the same shape used as a joint fitting for B
4 and 14 may be used. A pin hole 14e for a lock pin 23 is formed in each hook material 14, and each hook 1
4d is formed with a slope 14d1. One beam B
In the opening of the hook, a storage groove B5 for inserting the hook members 11, 11 is provided.
, B5 are formed, and the bolt holes B6, B6,... Correspond to the bolt holes 14c, 14c,.
Are formed. On the other beam B, hook material 1
Storage holes B5, B5 for inserting the holes 4, 14 are formed, and bolt holes B7, B7, pin holes B8 corresponding to the hooks 14d, 14d... Of the hook members 14, 14, the pin holes 14e, 14e are formed. I have.

The hook members 14, 14 are inserted into the receiving grooves B5, B5 of one of the beams B with the bolt holes 14c, 14c... Side, and are respectively inserted into the bolt holes B6, 14c through the seat plates 24a, 24a, the nuts 24b, 24b. , 14c is attached to the opening of the beam B such that the hooks 14d, 14d side protrude. The other beam B
, A locking bolt 25 is mounted in each bolt hole B7 via a seat plate 25a, 25a and nuts 25b, 25b. Therefore, the beams B, B are inserted into the storage grooves B5, B5 of the other beam B with the hooks 14d, 14d... Of the hook members 14, 14, and the bolts 25, 25 are engaged with the hooks 14d, 14d. Lock pin 2 in pin holes B8, 14e, 14e
By driving in 3, the joint can be joined in the longitudinal direction via the hook members 14. However, FIG.
Hook material 14 is divided into small and medium sizes according to FIG.
The beams B may be properly used depending on the size of the beams.

In each of the above embodiments, the column P, the beam B
An appropriate adhesive may be used in combination for the joints of the beams B and B. In addition, hook materials 11 to 14,
It is preferable that the bolts 21, 22, 24 and the lock pin 23 are respectively subjected to appropriate rust prevention treatment.

[0031]

As described above, according to the first aspect of the present invention, mounting is achieved by combining a pair of symmetrical hook members that bend a plate material to form a mounting portion and a locking portion at a right angle. Since the parts can be overlapped and fixed to the pillar and the strength of the mounting part can be made sufficiently large, there is an excellent effect that a predetermined frame strength can be easily realized.

According to the second aspect of the present invention, by employing a pair of flat hook members, there is an effect that the joint processing of the opening of the beam can be simplified, and the beam can be suitably used for a laminated wood. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the entire configuration.

FIG. 2 is an explanatory sectional view corresponding to the line AA in FIG. 1;

FIG. 3 is an explanatory sectional view corresponding to an arrow BB in FIG. 1;

FIG. 4 is an explanatory view of a use state (1).

FIG. 5 is an explanatory view of a use state (2).

FIG. 6 is a view corresponding to the view taken along line YY of FIG. 5 (B).

FIG. 7 is a development view showing another embodiment.

FIG. 8 is an explanatory view of a use state (3).

FIG. 9 is an explanatory view of a use state (4).

FIG. 10 is a view corresponding to FIG. 1, showing another embodiment.

11 is a cross-sectional view taken along the line CC in FIG.

[Explanation of symbols]

 11, 12, 13, 14 ... hook material 11a, 12a, 13a ... mounting portion 11b, 12b, 13b ... locking portion 11c, 12c, 13c, 14c ... bolt hole 11d, 12d, 13d, 14d ... hook 11d1, 12d1, 13d1, 14d1 ... slope 11e, 12e, 13e, 14e ... pin hole

Claims (5)

[Claims] 1. A hook member comprising a pair of symmetrical hook members, wherein each of the hook members is formed by bending a plate at a right angle to form a mounting portion and a locking portion, and a mounting bolt hole is formed in the mounting portion. The joining metal fitting for a wooden building, wherein an upward hook is formed in the engaging portion. 2. The joint fitting for a wooden building according to claim 1, wherein the hook has an upper surface formed with a slope facing the mounting portion. 3. The joint fitting for a wooden building according to claim 1, wherein a pin hole for a lock pin is provided in the locking portion. 4. The joint fitting for a wooden building according to claim 1, wherein a plurality of the hooks are formed in the locking portion at different heights. 5. A wooden structure comprising a pair of hook members having the same shape, each of which has a bolt hole for mounting along one side of a plate member and an upward hook on the other side. Joint fittings for buildings.