JPS6143890Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an inspection port that is installed inside the ceiling or in a wall opening in order to inspect and repair various wiring, piping, air ducts, etc. installed inside the ceiling or between wall layers. It is.

Conventionally, there are inspection ports in which an inner frame is fitted to an outer frame, and a gasket is interposed between the inner and outer frames to close the gap between the two, but these gaskets can only be made from soft materials. As a result, the installation to the inspection port frame by gluing or fitting may be incomplete, and the open side of the inspection port installed on the ceiling or wall may not be evenly pressed against the rotating device side, or may become deformed due to use. This has the disadvantage that it is difficult to bring the inner and outer frames into close contact with each other.

The present invention was developed in order to eliminate the above-mentioned drawbacks.
An inner frame having an outward flange at its lower end is fitted so that the outward flange of the inner frame can be opened and closed by covering and contacting the outward projecting edge, and the outward projecting edge and the outward flange are covered. A tongue piece having flexibility on the upper surface of a flat fitting base made of a hard or semi-hard material, which is fixed to the fitting groove by forming a fitting groove on one of the contacting surfaces. It is characterized by interposing a gasket integrally formed with a slightly inclined upward abutting portion to seal the outward projecting edge of the outer frame and the outward flange of the inner frame when the lid is closed. in,
The gap between the outer frame and the inner frame is eliminated by the covering of the outward projecting edge and the outward flange, and the gasket interposed in that part maintains a sealed state and is always in good condition in use. The purpose is to install the inspection port long and firmly by increasing the sealing effect when it comes into contact with the inner frame and preventing accidental collisions and contact noises between the movable inner frame and the fixed outer frame. It is something.

The structure of the present invention will be explained based on the embodiments shown in the attached drawings. Reference numeral 1 denotes an inspection port, and an outer frame 4 is assembled into a substantially rectangular shape with an outwardly directed ridge 3 provided at the lower end of a vertical main edge 2. An inner frame 7 is assembled into a substantially rectangular shape with an outward flange 6 protruding outward from the lower end of the vertical main edge 5, and an outer frame 7 with the outward flange 6 provided at the lower end of the outer frame 4. It fits over the lower surface of the projecting edge 3 and is pivotably supported by a link device 8 provided on one side thereof so as to be openable and closable.

A gasket 10 is fitted around the upper surface of the outward flange 6 of the inner frame 7 into a fitting groove 9 having a dovetail cross section so as to face the outward protruding edge 3 provided at the lower end of the outer frame 4. When the inner frame 7 is fitted and the lid is closed, the gasket 10 provided on the outward flange 6 of the inner frame 7 contacts the outward projecting edge 3 of the outer frame 4, causing a gap between the inner and outer frames 4 and 7. It is made by sealing.

As shown in FIG. 5, the packing 10 fitted into the fitting groove 9 provided in the inner frame 7 is made of a relatively rigid material such as a hard or semi-hard synthetic resin. It consists of a flat plate-shaped fitting base 11 and a tongue-shaped contact part 12 made of a flexible material such as a soft synthetic resin. It is integrally formed so as to protrude upwardly.

FIG. 6 shows another embodiment of the packing 10, in which a tongue-shaped abutting portion 12 is integrally formed in the approximate center of the fitting base 11 with its upper side enlarged and having an approximately V-shaped cross section. It is.

Further, the fitting groove 9 provided on the upper surface of the outward flange 6 of the inner frame 7 is a dovetail groove whose inner side is expanded in an inclined shape, as shown in the embodiment of FIGS. 7A to 7C. A fitting groove 9 having a shape is provided, and a fitting base 11 having an arcuate cross-section on both sides is fitted into the fitting groove 9 (Fig. 7A), or the inner side is expanded into a substantially rectangular shape. Except for forming the open fitting groove 9 (Fig. 7B) and fitting the fitting base 11 of the packing 10, the fitting groove 9 has a rectangular cross section as shown in Fig. 7C. This fitting groove 9 is provided with an adhesive 13,
The fitting base 11 of the gasket 10 may be fitted and fixed.

This adhesive 13 may be applied to the inside of the fitting groove 9 when attaching the seal 10, or a pressure-sensitive adhesive tape may be pasted on the lower surface of the fitting base 11 of the seal 10 in advance, and when attaching the seal, the adhesive tape 13 may be applied to the fitting groove 9. It is used by peeling off the release paper provided on the underside.

As mentioned above, the packing 10 has been described as being fitted into the fitting groove 9 provided on the upper surface of the outward flange 6 of the inner frame 7, but in the embodiment shown in FIG. A fitting groove 9 is provided on the outward projecting edge 3 provided at the lower end of the outer frame 4 covered by the outward flange 6 extending from the lower end.
The fitting base 11 of the gasket 10 is fitted into the inner frame 7, and the tongue-shaped contact portion 12 of the gasket 10 formed on the inner frame 7 is brought into contact with the inner surface of the outward flange 6 at the lower end of the inner frame 7, so that the inner and outer sides The space between the frames 7 and 4 is sealed.

The present invention has the above configuration,
The gap between the outer frame and the inner frame is eliminated by the covering between the outward projecting edge and the outward flange, and since the seal is interposed in the covering part, the space between the inner and outer frames is completely sealed. The area around the inspection port will not be contaminated, and since this covered part is a wide flat surface, and the contact part of the seal is a flexible tongue-like contact part, it will not stain the inner and outer frames. Even if there is some molding error or assembly error, this can be absorbed to maintain a good contact condition and further enhance the sealing effect between the inner and outer frames. Furthermore, in addition to the sealing effect between the inner and outer frames, the movable inner frame interposes the gasket when the inner frame is fitted into the outer frame, so that it can be closed without directly hitting the outer frame, especially its outward protruding edge. , there is no accidental impact to the outer frame or generation of contact noise, and the parts that attach the inspection port are prevented from loosening or deforming, and the installation state is maintained firmly for a long time, improving the aesthetic appearance of the ceiling surface. can be retained.

In addition, the flat fitting base made of a hard or semi-hard material can be easily and firmly attached to the inner frame or outer frame of the inspection port by fitting or adhesion.

[Brief explanation of drawings]

Fig. 1 is a front view of the inspection port according to the present invention, Fig. 2 is a cross-sectional view taken along the line A-A in Fig. 1, Fig. 3 is an enlarged cross-section of the main part showing the link device side in the closed state, and Fig. 4 5 is an enlarged sectional view of the main part showing the packing in the closed state, FIG. 5 is a cross-sectional perspective view of the packing, and FIG.
The figure is a cross-sectional view showing another embodiment of the packing installed, FIGS. 7A to 7C are cross-sectional views showing another example of the fitted state, and FIG. 8 is another example of the fitting position of the packing. FIG. 1...Inspection port, 3...Outward flange of outer frame, 4...
...outer frame, 6...outward flange of inner frame, 7...inner frame, 9...fitting groove, 10...packet, 11...
...Fitting base, 12...Language-like contact portion.

Claims (1)

[Scope of utility model registration request] An inner frame having an outwardly directed flange at its lower end is fitted and pivotally supported in an openable and closable manner by covering and contacting the outwardly directed flange of the inner frame with the outwardly directed projecting edge. A flat plate made of a hard or semi-rigid material, which has a fitting groove formed on one of the surfaces where the outward projecting edge and the outward flange contact each other, and is fixed to the fitting groove. A flexible tongue-shaped abutment part is formed on the upper surface of the fitting base, and a gasket formed integrally with a slightly inclined upper part is interposed between the outward protruding edge of the outer frame and the outside of the inner frame when the lid is closed. An inspection port characterized by being sealed with a facing flange.