JPH05311796A - Joint structure of roof unit - Google Patents

Abstract

PURPOSE:To obtain high bearing forces against great loads of piled snow and wind. CONSTITUTION:The corners of a metal clamp consisting of a pair of fixing pieces which are bent and connected according to a given angle are attached to the corner butted at a given angle between the tip of a side rafter (diagonal) 3 and the tip of a corner rafter (diagonal) 5. One of the paired fixing pieces is fixed to the side of the part 3 and the other fixing piece is fixed to the side of the wood part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a joint portion of a roof unit which constitutes a roof portion of a unit building, and is particularly suitable for joining a side tree and a corner tree.

[0002]

2. Description of the Related Art FIG. 6 is a plan view showing the structure of a ridge roof portion installed in an L-shaped unit building. In this figure, reference numeral R1 is a large building, R2 is a downbuilding, and V is a valley. In the unit construction method, the dormitory roof portion is divided into several roof units, produced in advance in a factory, and assembled at a construction site.

These roof units are composed of a roof plate and a support frame for supporting the roof plate, and are installed above the wall frames W, W, ... By the way, the ridged roof portion has an L-shaped configuration, and since the valley V exists, one of the roof units constituting the ridged roof is notched at an angle of 45 degrees ( There is a hatched portion A) in the figure. In the following description, the notched corner B of the roof unit A will be referred to as the entry corner B.

FIG. 7 is an enlarged perspective view showing the joint structure (of the support frame) of the above-mentioned corner B. As shown in FIG. In this figure, reference numeral 1 is a head joint (horizontal bridge member) installed along the outer wall upper frame of the room portion, and 2 is a bridge between a purlin (not shown) and the head joint 1 for receiving a ground plate. Sagging tree (slant wood),
3 is a sidebar tree (slanting material) that constitutes the side frame of the roof unit,
4 Nose cover (horizontal material) to hide the tip of the rafter 2
Further, 5 is a tree (slanting material) which is a corner of the frame of the corner B.
Is.

[0007] The side tree 3 and the nose cover 4 are obliquely cut at positions where they should originally intersect each other at an angle of 45 degrees. Then, between these cuts, a tree 5 which is a corner is laid along the valley V.

[0006] By the way, conventionally, as shown in FIG. 7, the side tree 3 and the entry corner tree 5 are first connected to each other as shown in FIG.
After cutting the end face of the bevel diagonally and abutting the cut end against the side face of the tip part of the side tree 3, three nails (CN90) C, C, ...
The two have been joined together by driving from the side of the side tree 3 toward the above-mentioned cut of the tree 5 which is the corner.

However, as shown in FIG. 8, the side tree 3 is a diagonal member that extends obliquely upward, whereas the tree 5 that is a corner is a diagonal member that extends obliquely downward. In the above, the nails C, C, ...
I had to drive towards. Therefore, when a large typhoon or heavy snowfall is encountered, the nail may be pulled out by the vertical force such as wind load or snow load, and the roof may be damaged.

[0008] As one plan to improve such inconvenience,
It is conceivable to fix both side surfaces of the tip of the side tree 3 and the entry tree 5 through the hinge hardware described in Japanese Utility Model Laid-Open No. 61-203914. By doing so, it is possible to resist wind load, snow load, etc. by the shearing force of the nails, so that it is expected to obtain a stronger joint structure.

[0009]

However, the above-mentioned hinge hardware is one in which a pair of fixing pieces are rotatably coupled by a coupling pin, and is originally used as an opening / closing tool, and is described in the above publication. As described above, even if it is suitable for fixing the end faces of the trees that make up the dormitory roof to the side faces of the corner wood, and for rotatably connecting the tip parts of different erection materials, different diagonal members It is extremely unsuitable as a means for tightly connecting the tip portions of the to each other at a constant angle. Further, the hinge metal piece requires a pair of fixing pieces and a connecting pin as described above, and the binding metal piece has the drawbacks of having a large number of constituent parts and being complicated to manufacture.

The present invention has been made in view of the above-mentioned circumstances, and by connecting the diagonal members to each other through the binding metal which can be manufactured at low cost and is easy to handle, a very large snow load and wind load can be obtained. It is an object of the present invention to provide a structure of a joint portion of a roof unit that can sufficiently endure it.

[0011]

In order to solve the above-mentioned problems, the structure of the joint portion of the roof unit according to claim 1 is such that the tip end of the first diagonal member such as a side tree and the first corner tree such as a corner tree. The position of the binding member made up of a pair of fixing pieces bent and connected to each other at the predetermined angle is applied to the position where the tip end of the second diagonal member abuts each other at the predetermined angle. I mean
One of the pair of fixing pieces is fixed to the side surface of the first diagonal member, and the other fixing piece is fixed to the side surface of the second diagonal member.

According to the second aspect of the present invention, in the binding material, a pair of fixing pieces constituting the binding material are formed by bending one metal piece having a predetermined shape in the same shape and in the same size and non-axisymmetrically. It is characterized by being divided.

[0013]

According to the above structure, it is possible to resist wind load, snow load, etc. by the shearing force of the nails, so that it is possible to sufficiently withstand heavy snow and large typhoons. Further, since the binding metal used in the above structure is made of a metal piece having a simple shape similar to both wings of a seagull, it can be manufactured at low cost and is easy to handle.

Furthermore, since the above-mentioned binding material is attached to the side surfaces of the first and second diagonal members, one end of the diagonal member cut at a complicated angle is cut against the other end of the other diagonal member. Compared with the above-mentioned conventional binding work in which a nail has to be driven in from the side surface of the tip portion of the diagonal member, the work becomes much easier.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a structure of a joint portion of a roof unit which is an embodiment of the present invention, and specifically, shows a joint structure of the corner portion B of a roof unit having a corner portion B. It is a figure. 2 is a side view of the same, and FIG. 3 is a plan view of the same. FIG. 4 is a perspective view showing the binding material of this example used for the joint structure of the same corner B, and specifically, it is used for joining the side tree 3 and the corner tree 5. It is a figure which shows the structure of the binding metal thing. Further, FIG. 5 is a development view of the same.

Since the corner portion B shown in FIGS. 1 to 3 has the same structure as that shown in FIG. 6, the corresponding parts are designated by the same reference numerals and the description thereof will be omitted.

First, the binding material of this example will be described. As shown in FIGS. 4 and 5, the binding material 6 of this example
Is composed of a pair of fixing pieces 7a and 7b to be attached to the side tree 3 and the cornered tree 5. These fixing pieces 7a and 7b are made of elongated parallelogram-shaped pentite steel pieces (thickness: 1.2 mm) of the same shape and size, and have a shape in which one hypotenuse is shared (a non-axisymmetric shape). ), It is a series of bends.

Here, as shown in FIG. 1, it is possible to accurately apply the inside or outside of the binding material 6 to the outside and inside of the portion where the side tree 3 and the entering corner tree 5 intersect. In order to make it possible, the angle formed by the fixed piece 7a and the fixed piece 7b is determined corresponding to the angle formed by the side tree 3 and the entering tree 5 (for example, 135 degrees).

Further, the hypotenuse (the corner line of the binding metal 6) shared by the left and right fixing pieces 7a and 7b is the corner (including both the outer corner and the inner corner) of the portion where the entering corner tree 5 and the side tree 3 intersect. ), The fixing pieces 7a, 7b
However, the angle (acute angle) between the hypotenuse of the fixing pieces 7a and 7b and the upper side in the figure is set so that the diagonally upward or diagonally downward is extended along the side surface of the side tree 3 or the cornered tree 5. ,
It is set according to the roof slope.

The lengths of the upper and lower sides of the fixing pieces 7a, 7b are set to be sufficiently longer than the width of the cut end of the side tree 3.

The fixing pieces 7a and 7b have the respective fixing pieces 7a and 7b.
Four nail holes 8a, 8b, ... For fixing nails a and 7b to the side surface of the side tree 3 or the cornered tree 5 are provided.

The pentite steel sheet used as a material is preferably plated with zinc to prevent rust.

Next, a description will be given of the work of binding the tree 5 which is the corner to the side tree 3 which is installed on the head tie 1 by using the two binding hardware 6 having the above-mentioned structure. First, as shown in FIG. 1, after the tip end cut of the tree 5 which is the corner is abutted against the inner side surface of the tip of the tree which is a side, the inside of the binding material 6a is fitted to the outside of the portion where the both intersect, and Fixed piece 7
Apply a and 7b to the outer side surface of each tip of the side tree 3 and the corner tree.

After this, the nail holes 8a, 8 of the respective fixing pieces 7a, 7b
The nails (ZN-40) 9, 9, ... Are driven into the outer side surfaces of the tip end portions of the side tree 3 and the entering tree 5 through b. In this way, first, the outer side surfaces of the side tree 3 and the entering tree 5 are fixed to each other (FIG. 2).

Next, the outside of the binding metal 6b is aligned with the inside of the part where the entering corner tree 5 and the side tree 3 intersect, and the fixing pieces 7a and 7b are attached to the insides of the tips of the side tree 3 and the corner tree. Apply to the side. After this, each fixing piece 7a, 7b
Through the nail holes 8a, 8b, ...
And, it is driven into the inner side surface of the tip of the tree 5 which is the corner. In this way, the tree 3 which is the side and the tree 5 which is the corner are tightly connected from both sides (FIG. 3).

According to the above-mentioned joining structure, it is possible to resist wind load, snow load, etc. by the shearing force of the nail,
Even if you are hit by a heavy snowfall or a large typhoon, you can avoid the collapse of the roof. Further, since the binding object having the above-mentioned configuration is made of a metal piece having a simple shape similar to both wings of a seagull, it can be manufactured at low cost.

Since the fixed piece 7a and the fixed piece 7b have a two-fold rotational symmetry with respect to the axis passing through the common midpoint of the hypotenuse, the fixed piece applied to the side tree 3 is any fixed piece 7a. , 7b, and similarly, the fixing piece applied to the tree 5 which is the corner may be either fixing piece 7a, 7b. Therefore, it is easy to handle. Furthermore, since the above-mentioned binding object is attached to both side surfaces of the side tree 3 and the entering tree 5, the nails are attached to the end surface of the entering tree 5 at a complicated angle from the side surface of the tip of the side tree 3. Compared with the above-mentioned conventional tightening work that had to be driven, the work becomes much easier.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. Also included in this invention. For example, in the above-described embodiment, the case where the nail is used as the fixture for attaching the binding material 6 to the side tree 3 and the corner tree 5 has been described, but the present invention is not limited to this, and a screw or a rivet may be used.

Further, in the above-mentioned embodiment, the case of the joint structure in which the tip cut end of the tree 5 which is the corner is made to abut against the side face of the tip of the tree 3 which is the side has been described. The tip end cut end of 3 may be butted against the side face of the tip end part of the tree 5 which is the corner. Further, the tip end portions of the side tree 3 and the entry corner tree 5 may be cut at a predetermined angle, and the tip end cut ends of both may be abutted.

Further, in the above embodiment, the fixing piece 7
The case where the shapes of a and 7b are parallelograms has been described, but the shape is not limited to this, and other shapes may be used.

In the above embodiment, the case where the side tree 3 and the corner tree 5 are joined has been described.
As long as the joining of the tip portions of the two diagonal members is the joining structure described above, it is included in the scope of the present invention.

[0032]

As described above, since the roof unit joining structure of the present invention is a structure that resists wind loads, snow loads, etc. by the shearing force of the nails, heavy snowfall, large typhoons, etc. Can withstand. Further, since the binding material used in the above structure is made of a metal piece having a simple shape similar to both wings of a seagull, it can be manufactured at low cost and is easy to handle.

Furthermore, since the binding material is attached to the side surfaces of the first and second diagonal members, one diagonal member cut at a complicated angle is cut with respect to the other diagonal member. Compared with the above-mentioned conventional binding work in which a nail has to be driven obliquely from the side of the tip portion of the material, the work becomes much easier.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a joint portion of a roof unit that is an embodiment of the present invention.

FIG. 2 is a side view showing a structure of a joint portion of the roof unit.

FIG. 3 is a plan view showing a structure of a joint portion of the roof unit.

FIG. 4 is a perspective view showing a configuration of a binding metal object used for the structure of the joint portion.

FIG. 5 is a development view showing the configuration of the same binding material.

FIG. 6 is a plan view showing a configuration of a hipped roof portion installed in an L-shaped unit building.

FIG. 7 is a perspective view showing a conventional joining structure.

FIG. 8 is a side view showing a conventional joining structure.

[Explanation of symbols]

 3 Side rafters (first slant) 5 Corner rafters (second slant) A Roof unit B Bent corners (joint of roof units) 6,6a, 6b Bonding hardware 7a, 7b A pair of fixing pieces

Claims (2)

[Claims] 1. The predetermined angle is defined as to whether or not a tip portion of a first diagonal member such as a side tree and a tip portion of a second diagonal member such as a corner tree abut each other at a predetermined angle. To the side surface of the first diagonal member, by applying the corner of the binding piece made up of a pair of fixing pieces bent and connected to each other corresponding to A structure of a joint portion of a roof unit, characterized in that other fixing pieces are respectively fixed to the side surfaces of the second diagonal member. 2. The pair of fixing pieces is formed by bending one metal piece having a predetermined shape into two equal sized and non-axisymmetrically bisected. A binding material used for the structure of the joint portion of the roof unit described in 1.