JPH0324728Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an expansion joint device for the ceiling of a building.

As shown in FIG. 1, the conventional expansion joint device for the ceiling of a building has screws 3 installed on the bottom surface of one ceiling material 1 such that the gap between the opposing ceiling materials 1 is covered with an expansion joint cover 2. The engaging protrusion 5 protruding from the upper surface of one side of the expansion joint cover 2 is engaged with the clip 4 screwed in the screws 4 and fixed, and the gasket 6 is fitted onto the upper surface of the other side of the expansion joint cover 2. The ceiling material 1 is placed in contact with the lower surface of the other ceiling material 1. In this way, use the expansion joint cover 2 to fill the gap between the opposing ceiling materials.
The expansion joint cover 2 is covered with a pad to fix one side, and the other side is brought into contact with the ceiling material 1 through the packing 6. However, the expansion joint cover 2 hangs down due to its own weight, and there is a space between the packing 6 and the lower surface of the ceiling material 1. A gap is created between the two, which is unfavorable in terms of airtightness and appearance. Therefore, this invention was developed with the aim of preventing gaps from forming between the expansion joint cover and the ceiling material mask even after long-term use. A magnet is attached to the upper surface of the other side, and a magnetic material is fixed to the lower surface of the ceiling material facing the magnet.

Hereinafter, the present invention will be explained in detail based on specific embodiments shown in FIGS. 2 to 6.

FIG. 2 shows an example in which the locking groove 16 on the other side of the expansion joint cover 8 is formed closer to the gap in the ceiling material 7, and the magnetic body 20 is stretched on the lower surface of the ceiling material 7 corresponding to the magnet 19. . Here, the punching joint cover 8 covers the gap, has a locking groove 16 near the gap, and further has a protrusion 8a in a direction away from the gap. Because of the protrusion 8a,
The magnet 19 and the plate-shaped magnetic body 20 are difficult to see and do not give a foreign feel.

In FIG. 3, a gasket 18 is also fitted to the locking groove 16 on the other side of the expansion joint cover 8, and a magnet 23 is housed in a rectangular cylinder 22 fixed on a board 21 shown in FIGS. 4 to 6. The substrate 21 is fitted into the fitting groove 25 formed by protruding the protrusion 24 closer to the gap in the ceiling material 7 than the locking groove 16, and the magnet 23 is inserted into the fitting groove 25.
are provided at appropriate intervals, and the magnetic body 23 is stretched on the lower surface of the ceiling material 7 corresponding to the magnet 19. Also here, since the magnet 23, the square tube 22 housing the magnet 23, and the plate-shaped magnetic body 20 are located inside the packing 18, it is difficult to see and does not give a foreign feel.

As mentioned above, the present invention covers the gap between opposing ceiling materials with the expansion joint cover, and fixes one side of the expansion joint cover to the lower surface of one of the ceiling materials to expand the expansion joint. In an expansion joint device for a building ceiling in which the other side of the expansion joint cover is brought into contact with the lower surface of the other ceiling material, a magnet is attached to the upper surface of the other side of the expansion joint cover and is opposed to the magnet. The expansion joint cover is an expansion joint device for the ceiling of a building, in which a magnetic material is fixed to the lower surface of the ceiling material, and the expansion joint cover has a protruding part in the direction away from the gap from the magnet mounting part. The expansion joint cover will follow your movement even when you move it up and down, left and right, and it will not sag due to its own weight even after long periods of use, and there will be no gap between the expansion joint cover and the bottom surface of the ceiling material. This is preferable from the viewpoint of airtightness and appearance. In addition, in the present invention, since the expansion joint cover has a protrusion in the direction away from the gap from the magnet attachment part, the magnet and plate-shaped magnetic material are difficult to see, so that no foreign feeling is given.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a conventional example, Figures 2 to 6 are specific embodiments of the present invention, Figure 2 is a vertical cross-sectional view of an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. Fig. 4 is a perspective view of the magnet attached to the expansion joint cover shown in Fig. 3, and Fig. 5 is a longitudinal sectional view of the
FIG. 6 is a front view of FIG. 4. 7... Ceiling material, 8... Expansion joint cover, 19, 23... Magnet, 20... Magnetic material, 8a... Projection of expansion joint cover.

Claims (1)

[Scope of utility model registration request] Cover the gap between opposing ceiling materials with the expansion joint cover, fix one side of the expansion joint cover to the lower surface of one ceiling material, and fix the other side of the expansion joint cover to the other side. In the expansion joint device for the ceiling of a building, which is brought into contact with the lower surface of the ceiling material, a magnet is attached to the upper surface of the other side of the expansion joint cover, and a magnetic material is fixed to the lower surface of the ceiling material facing the magnet. An expansion joint device for a ceiling of a building, characterized in that the expansion joint cover has a protruding portion in a direction farther from the gap than the magnet mounting portion.