JPS594114Y2 - Ceiling inspection door lid fall prevention device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a lid fall prevention device for a ceiling inspection opening, which prevents the lid from falling when opening and closing an inspection opening installed in the ceiling for inspecting the ceiling, and its main purpose is to When the lid is inspected,
Alternatively, it is to prevent falling through the inspection port or a part of the device from protruding downward from the inspection port during an earthquake.

Conventionally, the inspection port and the lid are formed into a square shape, and the lid 2 is attached by placing the periphery of the lid 2 on a frame 10 provided around the periphery of the inspection port 1, as shown in FIG. If one side of the lid 2 comes near the diagonal line of the inspection opening 1 due to vibration or contact as shown in Figure 2, there is a risk that the lid 2 may fall out of the inspection opening 1, and the imaginary line in the diagram As shown, attaching a string 11 such as a chain to the lid 2 will prevent it from falling, but the lid 2
A part of the machine could sometimes protrude from inspection port 1, creating a danger.

The present invention has been devised in view of the above points, and will be described in detail below based on examples.

In the embodiment shown in FIG. 3, the inspection port 1 and the lid 2 are formed into a rectangular shape, and the vertical piece 4 integrally extends upward from approximately the center of one side of the lid 1 at a substantially right angle, and is approximately horizontal outward from the upper end of the vertical piece 4. A pin 9 is driven into a crosspiece 8 attached to the back side of the ceiling plate 7 around the inspection opening 1 through a mounting hole 6 provided in a horizontal piece 5 extending from the side to attach the lid 2 vertically and with the pin 9 as a fulcrum. The outer circumferential edge of the lower surface of the lid 2 is placed on the frame 12 attached to the periphery of the inspection opening 1 to close the inspection opening 1. When opening the lid 2, it is installed as shown in Fig. 3. As shown by the line, the lid 2 is placed on the ceiling by lifting the lid 2 with hand A and then rotating it, so that the lid 2 is held by the pin 9 even if vibrations are applied due to an earthquake or the like. Therefore, it is possible to prevent the drawer from falling through the inspection port 1, as well as from tilting and partially protruding from the inspection port 1.

Here, a lining material 14 such as a heat insulating material is attached to the top surface of the ceiling plate 7 and the lid 2, respectively.

In the present invention, the horizontal piece extending outward from the upper end of the vertical piece rising from one edge of the lid is pivoted with a pin to a crosspiece attached to the back of the ceiling around the inspection opening, and the lid is moved up and down into the inspection opening. Since it is mounted to be movable and horizontally rotatable, when inspecting the ceiling, you can open the inspection door by first lifting the lid, then horizontally rotating it using a pin and placing it on the ceiling. It can also be applied to ceilings with a small back height; - When the inspection opening is covered with old clothes, the outer rim of the bottom of the lid is placed on a frame attached to the periphery of the inspection opening. Therefore, the lid is supported by pins and a picture frame, and even if vibration is applied to the lid due to an earthquake, or if a mouse or the like gets on the lid, the lid may fall out of the inspection opening, or it may tilt and become partially damaged. Not only is it possible to prevent the lid from jumping out of the inspection opening, but the vertical piece of the lid comes into contact with the side surface of the crosspiece attached to the periphery of the inspection opening, thereby preventing the lid from rotating horizontally and opening unexpectedly.

As described above, according to the present invention, not only can the lid be opened easily by lifting the lid once and rotating it horizontally, but the lid will not fall due to vibration or the like and will not open unexpectedly.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a perspective view of the same as above,
Fig. 3 is a sectional view showing an embodiment of the present invention, and Fig. 4 is a perspective view showing the same lid, where 1 is an inspection port, 2 is a lid, 4 is a vertical piece, 5 is a horizontal piece, and 8 is a horizontal piece. 9 is a pin, and 12 is a picture frame.

Claims (1)

[Scope of utility model registration request] An inspection hole is provided in the ceiling for inspecting the attic space, and a horizontal piece that extends outward from the top of the vertical piece that rises from one edge of the lid is pivoted with a pin to a crosspiece attached to the ceiling surface around the inspection hole. A lid fall prevention device for a ceiling inspection opening, which comprises attaching the lid to the inspection opening so that it can move vertically and rotate horizontally, and placing the outer periphery of the lower surface of the lid on a frame attached to the periphery of the inspection opening.