JPH1162024A - Aseismatic joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of cracks at peripheral parts of a joint even when vibration such as an earthquake occurs by increasing vibration absorption ability of a joint material. SOLUTION: In a plastic joint member having a cross sectional form having overhang parts in outer perpendicular directions from both ends of a U-letter shaped recessed groove part, a bottom surface part of the recessed groove part, at least, is formed of soft material. Since a bottom surface of the recessed groove part, at least, is formed of the soft material, vibration is absorbed by deformation of the soft material even when ways of vibration are different in the right and the left of the joint member 1, thereby generation of cracks around the joint member 1 is lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint material provided at a joint of a panel material of a wall or a ceiling, and more particularly to an earthquake-resistant joint material which does not easily crack on the wall or the ceiling even during an earthquake. .

[0002]

2. Description of the Related Art As a joint material provided at a seam of a board on a wall or a ceiling, a plastic joint material having a cross-sectional shape in which a projection is provided in a direction perpendicular to the outside from both ends of a U-shaped concave groove portion is known. Such joint materials were entirely formed of hard plastic.

[0003]

Since the conventional joint material is entirely made of hard plastic, it cannot absorb vibrations at the time of an earthquake or at the time of opening and closing a door. Cracks often occurred. In particular, as shown in FIG. 3, the tendency is remarkable when the base material is different, such as concrete A on one side and lightweight steel B on the other side (because the method of vibration differs between concrete and lightweight steel). Cracks always occurred in the putty-coated portions on both sides of the joint material. An object of the present invention is to provide an earthquake-resistant joint material that increases the vibration absorbing power of the joint material and does not cause cracks around joints even when there is vibration during an earthquake or the like.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a plastic joint material having a cross-sectional shape in which projecting portions are provided at right angles to the outside from both ends of a U-shaped concave groove portion, wherein at least the bottom portion of the concave groove portion is made of a soft material. It is a seismic joint base material characterized by comprising: Since at least the bottom surface of the groove is made of a soft material, even if the joints vibrate differently in the right and left directions, the soft material is deformed to absorb the vibration, and cracks are less likely to occur around the joint. When the entire U-shaped concave groove portion is made of a soft material, this effect is further enhanced, and cracks are less likely to occur.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings relating to embodiments. FIG. 1 is a cross-sectional view of the joint material 1 of the embodiment, FIG. 2 is a cross-sectional view of the joint material 10 of the embodiment, FIG.
FIG. 4 is an explanatory view showing an example of a use state of the joint material 1.

A joint material 1 shown in FIG. 1 is a seismic joint material made of vinyl chloride having a cross-sectional shape in which a projecting portion 3 is provided from both ends of a U-shaped concave groove portion 2 in a direction perpendicular to the outside. Its dimensions are about 30 mm in width, about 7 mm in thickness, and about 2 meters long. The entire concave groove portion 2 is made of soft vinyl chloride having a hardness of 75 or less, and the overhang portion 3 is made of hard vinyl chloride having a hardness of 85 or more. The overhang portion 3 is thinner toward the tip so as to be suitable for putty processing. Such a long joint material is suitable for being manufactured by extrusion.

The joint member 10 shown in FIG. 2 comprises a groove 11 and an overhang portion 13 and has the same overall shape as the joint member 1 except that the soft material portion is only the bottom portion 12. Thus, the vibration absorbing effect can be obtained if at least only the bottom portion is made of a soft material, but the vibration absorbing effect is larger when the entire groove is made of a soft material like the joint material 1. The overhang portion 3 may be made of a soft material or a semi-hard material having a hardness of 75 to 85, but a hard material having a hardness of 85 or more increases the hardness of the joint material as a whole and is easy to handle during transportation or construction.

The earthquake-resistant joint material of the present invention is used, for example, as shown in FIG. This is the joint material 1 at the seam of the wall board
This is an example using. In FIG. 3, the left board 4 is screwed and supported on a base of a lightweight steel frame B, and the right board 4 is supported by a bond 5 on a base of concrete A. The joint material 1 is adhered between the two boards 4 and 4,
Putty 6 is provided to eliminate the step between the overhang and the board. Then, a finish is applied thereon with paint or the like. As described above, particularly when the base materials on both sides of the joint are different, vibrations at the time of an earthquake or opening / closing of the door are different between the left and right boards, and the putty 6 is liable to crack.
In such a case, in the joint material of the present invention, the soft material portion is deformed to absorb the vibration and almost no stress is generated on the bonding surface between the overhang portion and the putty, so that the crack is hardly generated.

The size and material of the joint material of the present invention are not limited to the embodiments. Also, the mode of use is shown in FIG.
However, it is needless to say that, for example, even if the base material on both sides is a lightweight steel frame, the base material has a crack preventing effect.

[Brief description of the drawings]

FIG. 1 is a sectional view of a joint material 1 according to an embodiment.

FIG. 2 is a cross-sectional view of the joint member 10 of the embodiment.

FIG. 3 is an explanatory diagram showing an example of a use state of the joint material 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint material 2 Concave groove part 3 Overhang part 4 Board 5 Bond 6 Putty 10 Joint material 11 Concave groove part 12 Bottom part 13 Overhang part A Concrete B Lightweight steel frame

Claims (2)

[Claims] 1. A plastic joint material having a cross-sectional shape in which projecting portions are provided in the direction perpendicular to the outside from both ends of a U-shaped concave groove portion, wherein at least a bottom portion of the concave groove portion is formed of a soft material. Seismic joint base material 2. The seismic joint material according to claim 1, wherein the U-shaped concave groove portion is made of a soft material and the overhang portion is made of a hard material.