Double-layer floor device

Abstract

PROBLEM TO BE SOLVED: To provide a double floor facility which can prevent fixing means for fixing a panel and a support part from coming off from the panel in the case of ordinary work of removing a panel and is excellent in workability.SOLUTION: In a double floor facility, a screw 30 is composed of a head 31 and a shank 32, the upper part 34 of the shank 32 is formed with a smaller diameter than that of the lower part 33 fixed to a support part 10, and a panel 20 is composed of a core material 22 and a steel plate 23 provided at least along the top face of the core material 22. A recess 222 for housing the head 31 is formed in the top face of the core material 22, while a core material insertion hole 221 is formed through which the shank 32 is inserted vertically passing almost in the center of the recess 222. A steel plate insertion hole 231 through which the screw 30 is inserted is bored at a position on the steel plate 23 corresponding to the core material insertion hole 221, and a part of the steel plate 23 is pushed into the recess 222 by the head 31 in a state that the panel 20 and the support part 10 are fixed by the screw 30, with the diameter of the steel plate insertion hole 231 being smaller than that of the lower part 33 of the screw 30 and larger than that of the upper part 34.

Description

technical field [0001] The present invention relates to a double-layer flooring installation in which a panel is placed on a support part arranged on a foundation floor and the panel and the support part are fixed together. Background technique [0002] As a conventional double-floor installation, there is known a double-floor installation in which a support is provided on a foundation floor, a panel is placed on the support, and the panel and the support are fixed together with bolts (see Patent Document 1). Such double-floor equipment generally uses the space between the panel and the foundation floor as a wiring space, and lays multiple wirings or wiring devices in this wiring space. However, when changing the layout of the floor, etc., wiring is required In this case, the panel needs to be disassembled to reroute the wiring. [0003] In the case of removing the panel and rerouting the wiring, in the double-floor equipment of Patent Document 1, the panel is removed from ...

AI Technical Summary

Problems solved by technology

[0007] However, in the double-floor installation disclosed in Patent Document 2, the work of attaching the detachment stopper to the fitting for panel fixing is required, and the labor required increases.

In addition, when it is necessary to remove the panel fixing fitting due to a failure of the panel fixing fitting, etc., the panel fixing fitting cannot be removed only by working from the upper side of the panel, and therefore a very complicated work is required.

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