JP5046604B2 - Seismic joint material - Google Patents

Description

  The present invention relates to a joint material that covers a joint of a panel material fixed to a structural material such as a wall or a ceiling, and more particularly to a seismic joint material that is less prone to crack around the joint material when vibration such as an earthquake occurs.

As a conventional seismic joint material, for example, there is one disclosed in Patent Document 1, and this seismic joint material is a U-shaped concave groove portion fitted into a joint of a panel material fixed to a structural material such as a wall or a ceiling. (Fitting part) and an overhang part attached along the upper surface of the panel material from both ends of the groove part, and the groove part is made of soft plastic and the overhang part is made of plastic harder than the groove part. It is one-piece molded with a machine. When using the above-mentioned seismic joint material, putty is applied in order to fit the recessed grooves into the joints of the panels, attach the overhangs on both sides to the board, and make the steps at the ends of the overhangs inconspicuous. According to this seismic joint material, even when the two panel members are subjected to different vibrations during an earthquake or when the door is opened and closed, the groove portion made of soft plastic is deformed even if the relative position of the panel member is distorted. As a result, almost no stress is generated in the putty applied to the end portion of the overhanging portion, and therefore no cracks are generated.
Japanese Patent No. 3315626

  In the case of the above earthquake-resistant joint material, the groove portion needs to be made of soft plastic because the relative position of the two panel materials has changed due to an earthquake or when the door is opened or closed. Needs to be a hard plastic in order to bend during transportation and installation, and to make it difficult to break the waist. Therefore, the above-mentioned seismic joint material has to be extruded with two types of plastics, soft and hard, and an extra extrusion device is required compared to one molded from a single plastic. There was a problem that productivity increased and productivity was poor. In addition, the mold for extruding the above-mentioned seismic joint material has a problem that it has to have a complicated structure in order to make a structure in which hard and soft plastics are merged, resulting in an increase in cost. Furthermore, since the above-mentioned seismic joint material is integrally formed of two types of plastics, there is a problem in that productivity decreases due to different cooling rates of the plastics. The present invention aims to solve these problems.

  In order to solve the above problems, the present invention provides a U-shaped fitting portion that is fitted into a joint of a panel material fixed to a structural material such as a wall or a ceiling, and an upper end of the panel material from both edges of the fitting portion. A joint material in which the overhanging portion attached along the same length is integrally molded with a thermoplastic hard synthetic resin to a predetermined length, and a plurality of grooves extending in the longitudinal direction are formed on at least the bottom wall bottom surface of the fitting portion. Thus, the present invention provides an earthquake-resistant joint material characterized in that the fitting portion flexes flexibly at the joint.

  In the seismic joint material configured as described above, a plurality of grooves extending in the longitudinal direction are formed on at least the bottom wall lower surface of the fitting portion so that the fitting portion flexes flexibly at the joint. Therefore, even if the panel materials on both sides of the seismic joint material have different vibrations and the relative position of the panel materials on both sides is misaligned, the fitting part flexibly deforms and deforms due to the groove, so that the seismic joint Strain generated in the material can be suppressed, and cracks are less likely to occur around the earthquake-resistant joint material.

  In the above-mentioned seismic joint material, the groove may be formed on the bottom wall lower surface and the side wall outer surface of the fitting portion, and when this is done, the fitting portion is more flexibly bent. Even if the vibration generated between the panel materials on both sides of the seismic joint material is large, the fitting part can be deformed by the groove and the strain generated in the seismic joint material can be suppressed, so a crack occurs around the seismic joint material There is nothing.

  In the seismic joint material configured as described above, it is preferable to integrally form the fitting portion and the overhang portion with a single synthetic resin, and in such a case, vibration is absorbed without using a synthetic resin with low hardness. Therefore, the productivity of the earthquake-resistant joint material is improved as compared with that made of a plurality of synthetic resins.

  Hereinafter, an embodiment of an earthquake-resistant joint material according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the earthquake-resistant joint material 1 includes a fitting portion 2 having a U-shaped cross section that is fitted into a joint of a panel material P fixed to a structural material such as a wall or a ceiling, and the fitting portion 2. It consists of the overhang | projection part 3 attached along the upper surface of the panel material P from the both-ends edge. The seismic joint material 1 is made of thermoplastic hard vinyl chloride having a hardness of 85 or more, and is formed by an extrusion molding machine. The dimensions of the earthquake-resistant joint material 1 are about 40 mm in width, about 7 mm in height, 0.5 mm in thickness, and 2000 mm as a predetermined length. In addition, although the earthquake-resistant joint material 1 in this embodiment consists of thermoplastic hard vinyl chloride with a hardness of 85 or more, the earthquake-resistant joint material in the present invention is not limited to a thermoplastic hard synthetic resin with a hardness of 85 or more.

  As shown in FIGS. 1 and 2, the fitting portion 2 has a substantially U-shaped cross section with a rounded corner and a gentle curved surface, a width of 10 mm, and a depth of 7 mm. The thickness is 0.5 mm. A plurality of grooves 2a extending along the longitudinal direction are formed on the outer surface of the side wall and the lower surface of the bottom wall of the fitting portion 2, and the grooves 2a have a width and a depth as shown in FIGS. It has a U-shaped cross section with a length of 0.3 mm.

  As shown in FIG. 1, the overhang portion 3 extends from both ends of the fitting portion 2 in the direction perpendicular to the outside.

  One use example of the earthquake-resistant joint material 1 in the present invention will be described with reference to the drawings. The seismic joint material of the present invention is used to cover a joint of a pair of left and right panel members P, P fixed to a structural material such as a wall or a ceiling as shown in FIG. The panel material P on the left side of the figure is supported and fixed by a screw to a lightweight steel frame F, which is a wall structural material, and the panel material P on the right side of the figure is bonded and fixed to a concrete column A of the structural material of the wall by a bond B. ing. The seismic joint material 1 is used by fitting the fitting portion 2 into the joint of the two panel materials P and P and bonding the overhang portion 3 to the upper surfaces of the left and right panel materials P and P. Further, the seismic joint material 1 is used so as to eliminate the step between the projecting portion 3 and the panel material P by applying putty 4 to the board from the end of the projecting portion 3. And after making the seismic joint material 1 cover the joints with the panel materials P and P as described above, a finishing process is performed by attaching a cloth C from the panel material P to the overhang portion 3.

  Since the above-mentioned seismic joint material 1 is formed with a plurality of grooves 2a extending in the longitudinal direction on the outer side wall and the lower bottom surface of the fitting portion 2, the seismic joint material 1 is seismic resistant due to vibrations generated during an earthquake or when a door is opened and closed. Even if different vibrations occur on both sides of the joint material 1 and the relative position between the panel materials P and P is misaligned, the fitting portion 2 is flexibly bent and deformed by the groove 2a, so that the seismic joint material 1 Can be suppressed. The seismic joint material 1 has a substantially U-shaped cross section in which the fitting part 2 is rounded at the bottom corner to form a gentle curved surface, so that the fitting part 2 is deformed by the groove 2a. Can be made easier. Therefore, when said earthquake-resistant joint material 1 is distorted in the earthquake-resistant joint material 1 due to the deviation of the relative position between the panel materials P, P, the fitting portion 2 is flexibly bent and deformed, Stress is hardly generated on the application surface of the overhang portion 3 and the putty 4 applied around the overhang portion 3, and the putty 4 is hardly cracked. Moreover, the seismic joint material 1 of the present invention is effective not only for the relative position deviation of the panel materials P and P caused by the vibration caused by the earthquake, but also for the relative position deviation between the panel materials P and P due to secular change. There is something.

  Further, the seismic joint material 1 of the present invention is produced by a single extrusion device because the whole of the fitting portion 2 and the overhanging portion 3 is extruded and integrally molded with a single hard vinyl chloride. Compared with the technology of Patent Document 1 in which two types of synthetic resins in which the fitting part is a soft synthetic resin and the projecting part is a hard synthetic resin are integrally formed by two extrusion devices. Can be reduced, and efficient production can be achieved. Further, the seismic joint material 1 is composed of the fitting part 2 and the overhang part 3 as a whole and is integrally molded by extrusion with hard vinyl chloride, so that the produced joint material is less distorted. It is easy and the workmanship is improved.

  In addition, the seismic joint material 1 of the present invention has sufficient flexibility even when the fitting portion 2 is formed of hard vinyl chloride, and therefore, the same degree of use is possible by using soft vinyl chloride for the fitting portion. Even if the fitting part 2 is formed thinly compared with the one having flexibility, the shape can be maintained. As a result, since the seismic joint material 1 can be made thin and light in weight as a whole, the labor and cost required for transportation can be reduced, and it is light and easy to handle when performing construction work. Can do. In particular, the seismic joint material 1 of the present invention has a flexible bending property in the fitting portion 2 by the groove 2 a, and the groove 2 a is formed along the longitudinal direction of the fitting portion 2. Therefore, although it bends flexibly in the lateral direction and the height direction, it does not bend in the longitudinal direction.

  Although the earthquake-resistant joint material 1 of the above embodiment is made of hard vinyl chloride, the present invention is not limited to this and may be made of other synthetic resin materials. Further, the seismic joint material 1 of the above embodiment uses hard vinyl chloride as a single material, but the present invention is not limited to this and is made of a synthetic resin material made of a plurality of materials. May be.

  The shape of the fitting portion 2 of the seismic joint material 1 according to the above embodiment has a U-shaped cross section in which the bottom corners are rounded to form a gentle curved surface. As long as it has a concave cross section, for example, it may have a semicircular cross section or a concave cross section such as a U-shaped cross section. In this case, the fitting part 2 may be more easily bent when the bottom corner of the fitting part 2 is rounded to form a gentle curved surface.

  The groove 2a formed in the fitting portion 2 of the seismic joint material 1 of the above embodiment is formed on the outer side wall and the bottom wall lower surface of the fitting portion 2, and thus the groove 2a cannot be seen. Appearance improves. However, the present invention is not limited to this, and may be formed on the inner surface of the side wall and the upper surface of the bottom wall of the fitting portion 2. Further, the groove 2a is formed at least on the inner surface or outer surface of the side wall of the fitting portion 2 and part of the upper surface or the lower surface of the bottom wall, and the fitting portion 2 is flexibly bent by the groove 2a. Just do it.

  In the seismic joint material 1 of the above embodiment, the plurality of grooves 2a extending in the longitudinal direction are formed on the outer side wall and the bottom wall lower surface of the fitting portion 2, but the present invention is not limited to this. For example, as shown in FIG. 4, grooves 2a may be formed alternately on the outer surface and inner surface of the side wall and on the upper surface and lower surface of the bottom wall. Bend flexibly.

  Of course, the seismic joint material of the present invention is not limited to the embodiment, and one use example is not limited to FIG. 3. For example, even if the ground on both sides is a lightweight steel frame, the crack prevention effect is obtained. Needless to say.

It is sectional drawing of one Embodiment of the earthquake-resistant joint material of this invention. It is sectional drawing of the fitting part of the earthquake-resistant joint material of FIG. It is a perspective view which shows one example of use of the earthquake-resistant joint material of this invention. It is sectional drawing which shows embodiment of the other earthquake-resistant joint material of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Earthquake-resistant joint material, 2 ... Fitting part, 2a ... Groove, 3 ... Overhang | projection part.

Claims (3)

A fitting portion having a U-shaped cross section to be fitted into a joint of a panel material fixed to a structural material such as a wall or a ceiling, and an overhanging portion attached along the upper surface of the panel material from both ends of the fitting portion are heated. A joint material integrally molded to a predetermined length with a plastic hard synthetic resin,
A seismic joint material characterized in that a plurality of grooves extending in the longitudinal direction are formed in at least the bottom wall lower surface of the fitting portion so that the fitting portion flexes flexibly with respect to the joint.   The seismic joint material according to claim 1, wherein the groove is formed on a bottom wall lower surface and a side wall outer surface of the fitting portion. The seismic joint material according to claim 1 or 2, wherein the seismic joint material is formed by integrally molding the fitting portion and the overhang portion with a single thermoplastic hard synthetic resin.

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