JP3171747U - Seismic joint metal fittings at the edge of the ceiling base and the edge receiving edge - Google Patents

Abstract

An object of the present invention is to provide a metal joint capable of transmitting seismic force acting on a ceiling finishing material to an upper brace in order to prevent the ceiling from collapsing. A thin plate having a thickness of about 2 mm is cut into a hexagon. Four screw holes are drilled, and valley or mountain folds are formed to form left and right seismic joint hardware 1 and 2 at the intersection of field edge 4 and field edge receiver 3 with an L-shaped structure. A rib for preventing buckling is provided to prevent the joint hardware from being deformed when a strong seismic force is applied. Since the joint hardware that firmly fastens the field edge 4 and the double field edge that are perpendicular to each other is required on the lower side of the field guard 3 that is generally used indoors, the joint hardware is fixed with a tapping screw 14. To do. [Selection] Figure 1

Description

  The present invention relates to a fixed hardware used for fixing a field edge and a field edge receiver, which are part of a ceiling base material, to each other.

  In the conventional ceiling finishing material, a field edge holder is placed on a Z-shaped hanger attached to the lower part of a suspension bolt, and is then screwed to the lower side of the field edge suspended by a clip. The clip that hangs the field edge bears only the vertical load, but has no resistance to the horizontal force during an earthquake, and has a structure that simply slides on the field edge clip. During the Tohoku-Oki Pacific Earthquake, the large space ceiling of the 1997 seating symphony hall attached to “Musa Kawasaki” in Kanagawa Prefecture collapsed due to shaking with a seismic intensity of less than 5.

  The upper part of the field guard can be prevented from shaking greatly by using a joint fitting (Patent Document 1) that matches the bracing with the contact between the field guard and the suspension bolt, but the field that passes perpendicularly to the field guard underneath. If the fastening method with the edge is the same as the conventional one, the slip shown in Non-Patent Document 1 occurs, and the seismic performance cannot be secured.

  According to Patent Document 2, there is shown a fixing clip in which the fixing clip is difficult to be detached from the field edge and the field edge holder even if it is shaken by an earthquake, etc. ing. However, since the invention according to Patent Document 2 has a structure that slides as described above, there is a risk that a displacement occurs when a horizontal force is applied to the field edge and the field edge, and the large space ceiling may collapse due to an earthquake. there were.

Japanese Patent No. 4467759 JP 2010-229785 A

Summary of Annual Meeting of the Architectural Institute of Japan, September 2010 Experiments on the behavior of steel ceiling base materials during static loading

  At the time of a major earthquake, the frame is suspended from the roof or the floor of the upper floor with the assembly material, and the ceiling material is attached. Each time the hook of the clip of the hanging bracket swings, the opening gradually increases, and there are many disasters in which the field edge and the ceiling finishing material suspended below the clip collapse. This is because there is a deficiency in the structure of the hanging metal fitting that cannot smoothly transmit the seismic force that shakes the ceiling surface to the field guard. Accordingly, an object of the present invention is to provide a metal joint capable of transmitting the seismic force acting on the ceiling finishing material to the upper brace in order to prevent the ceiling from collapsing.

According to the invention of claim 1, compared to the conventional fixing clip, it is not slipped or distorted even when horizontal force is applied by fixing it with a plate and screws thicker than the field edge using an L-shaped bracket. So it becomes earthquake resistant.
According to the second aspect of the invention, by using two metal fittings symmetrically, it becomes possible to cope with horizontal force applied from any direction, so that it becomes more earthquake resistant.
According to the invention of claim 3, since the buckling prevention rib is arranged so as to support between the field edge and the field edge, even when a force other than the horizontal force is applied, the field edge and the field edge. Since deformation does not occur in the positional relationship of the receiver, it becomes more earthquake resistant.

  According to the present invention, the joint hardware is applied to the intersection where the field edge and the field edge overlap each other, and the key points are fastened with tapping screws to fix the XYZ direction seismic force acting on the ceiling surface upward. It is transmitted to the braces arranged in a well-balanced manner, and it is possible to prevent the ceiling from collapsing.

It is a figure which shows embodiment of this invention. It is a development view for the left side of the present invention. It is a development view for the right side of the present invention. It is a perspective view for the left side of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The seismic joint hardware for the left of the field edge and field edge receiving intersection of this invention is demonstrated using FIG. A thin plate having a thickness of about 2 mm is cut into a hexagon as shown in FIG. Drill four screw holes as in 7-10. Fold it along the broken line 11 and fold it along the broken lines 12 and 13. The lower rib 5 and the upper rib 6 for preventing buckling are provided by bending along the broken lines 12 and 13, but the broken lines 12 and 13 may be folded to provide ribs. Then, the seismic joint hardware for the left of a field edge and a field edge receiving intersection as shown in FIG. 4 is completed. The right seismic joint hardware for the field edge and the field edge receiving intersection is made for the left and the target using the steel plate shown in FIG.

  The lower rib 5 and the upper rib 6 are buckling prevention ribs for preventing the joint hardware of the present invention from being deformed when a strong seismic force is applied.

  Since the joint hardware that firmly secures the field edge and the double field edge that are perpendicular to each other is required under the field edge generally used indoors, the joint hardware according to the present invention is used as shown in FIG. Secure with screws with tapping screws. In the case of normal required strength, sufficient seismic resistance can be obtained if the joint hardware of the present invention is fixed only to the double field edges arranged at regular intervals.

  According to the present invention, even when a large force is applied in a large earthquake, the position of the field edge and the field edge does not change, so the force can be transmitted to the bracing without being deformed, and the earthquake resistance of the ceiling is improved. Further, by using a tapping screw used in normal construction, it is possible to cope with a case where a field edge and a field edge similar to those in the conventional case are used, so that it is easy to replace the conventional clip.

DESCRIPTION OF SYMBOLS 1 Seismic joint metal of left field edge and field edge receiving intersection 2 Seismic joint hardware of right field edge and field edge receiving intersection 3 Field edge receiving 4 Field edge 5 Lower rib 6 Upper rib 7 Screw hole 8 Screw hole 9 Screw hole 10 Screw hole 11 Valley fold line 12 Mountain fold line or valley fold line 13 Mountain fold line or valley fold line 14 Tapping screw

Claims (3)

  A seismic joint between the ceiling edge of the ceiling foundation and the field edge receiving crossing, characterized by an L-shaped structure with a screw-fastening hole in the plate that is thicker than the field edge to fix the field edge and the field edge support to each other hardware   The joint according to claim 1, wherein the left side and the right side are made symmetrically.   The joint metal fitting according to claim 1 or 2, wherein a buckling prevention rib is provided, and the seismic joint metal of the ceiling edge and the edge receiving intersection.

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