JPH0320432Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cover for a floor inspection port.

Conventionally, the surface of the inner frame that serves as the lid of a floor inspection door is finished with P-tile or mortar depending on the finish of the floor surface on which it is installed. In this case, the thickness of the surface finish is significantly different between P tile and mortar, and while P tile is 3 mm, mortar finish is about 30 mm or more, which is 10 times that thickness. For this reason, so-called dual-purpose types that are compatible with any type of floor finish are often used because they are convenient during construction.

FIGS. 1 and 2 are cross-sectional views showing an example of mounting a conventionally used dual-purpose floor inspection door cover. In the figure, 11 is a floor, 12 is an outer frame embedded in the floor, and 21 is an inner frame of a cover for a floor inspection port, from which a bottom plate receiver 22 projects. 31 is a bottom plate, and a hole 32 for attaching a handle attachment fitting 41 is bored in the center part. Reference numeral 41 denotes a handle mounting metal fitting, and a grip groove 42 in which a grip 52 of the handle 51 is housed is provided on the surface. A spherical recess 43 for pulling out the stored grip 52 is provided in the center of the grip groove 42, and two holes 44 through which the legs 53 of the handle 51 are inserted are provided at appropriate locations. .

Further, a similar groove 45 and a spherical recess 46 are provided on the back surface of the handle fitting 41. 47 is a mounting rib protruding from the left and right sides of the metal fitting 41;
It is fixed to the bottom plate 31 with screws 48. FIG. 1 shows the case of mortar finishing, where A indicates mortar and B indicates porcelain tile. In this case, the bottom plate 31
Mounting ribs 47 are placed on top and tightened with screws 48.

On the other hand, FIG. 2 shows the case of P-tile finish, and when the lid in the state shown in FIG. 1 is reversed, the attachment fitting 41 is also reversed. Next, the handle 51 is removed and inserted into the inverted grip groove 42. C is a P tile.

In this model, since both the upper and lower surfaces of the handle mounting bracket are the surfaces of the inspection openings, it is necessary to mold the concave groove and spherical recess for the grip on both the upper and lower surfaces, which makes the structure complicated and requires a lot of man-hours to manufacture. Another drawback is that the handle 51 must be replaced when reversing. Further, as another type, there is one described in Japanese Utility Model Publication No. 46-207. This is used when constructing thin flooring materials, such as asphalt tiles, by attaching a joining piece to the edge of the outer metal fitting (handle mounting metal fitting) that supports the handle. In the case of a relatively thick finish such as tiling, this joining piece is not necessary, so the use of a joining piece must be selected depending on the construction site.

In consideration of the above-mentioned points, the present invention provides a cover for a floor inspection port that can be used on both sides and employs a handle mounting bracket with a simple structure.

The floor inspection door cover of the present invention includes an inner frame 21 assembled into a rectangular shape with a size that fits into an outer frame 12 at a height that is the sum of the P tile finish thickness, mortar finish thickness, and bottom plate 31 thickness, and the center A handle mounting hole 32 is drilled in the inner frame 21 through the bottom plate receiver 22 so that one side has the thickness of the P tile finish and the other side has the thickness of the mortar finish. A fixed bottom plate 31 and a groove 42 into which the grip 52 of the handle 51 fits into the top surface.
A handle mounting bracket 41 having a spherical recess 43 formed therein and having an insertion hole 44 for the leg 53 of the handle 51; two legs 53 to be inserted into the insertion opening 44; A handle 51 consists of a retaining washer 54 to be engaged and a grip 52 that fits into the groove 42; When the distance piece 49 interposed between the mounting rib 47 and the bottom plate 31 and the inner frame 21 are reversed, the P tile surface of the bottom plate 31 is on top, and the mortared surface is on top. The handle fitting also includes mounting ribs 47 integrally formed on both sides of the handle fitting at a position and thickness such that the upper end of the handle fitting 41 and the finished surface coincide with each other.

The present invention will be explained below with reference to the embodiments shown in FIG. 3 and below. A bottom plate 31 attached to the inner frame 21 is provided with holes 32 for two handle attachment fittings 41 at symmetrical positions on the left and right, and the handle attachment fittings 41 are respectively attached thereto.

FIG. 4 is an exploded view of the handle fitting 41, and the surface of the handle fitting 41 is provided with a groove 42 in which the grip 52 of the handle 51 is accommodated. A spherical recess 43 is provided in the center of the groove 42 for pulling out the stored grip 52, and two holes 44 are provided for the leg portions 53 of the handle to be inserted therethrough. Unlike the front surface, the back surface of the handle attachment fitting 41 is not provided with any grooves or spherical recesses.

Reference numeral 47 indicates mounting ribs protruding from the left and right sides of the handle mounting bracket 41. Reference numeral 49 indicates a distance piece having the same size as the mounting rib and an appropriate thickness. It is fixed to the upper or lower surface of 47 with a screw 48.

Reference numeral 51 designates a handle, and a locking washer 54 and a nut 55 are screwed to the lower end after the leg portion 53 attached to the lower part of the grip 52 is inserted into the hole 44 of the handle attachment fitting 41.

Next, to explain the function of the floor inspection port cover according to the present invention, FIG. 5 shows the case where the floor is finished with mortar, and FIG. 6 shows the case where the floor is finished with P-tile. If the floor is finished with mortar, place the distance piece 49 on the edge of the handle mounting hole 32 of the bottom plate 31 in FIG. The mounting rib 47 of the handle mounting bracket 41 to which the washer 54 and nut 55 are screwed is applied and fixed to the bottom plate 31 with screws 48. Note that A represents mortar and B represents porcelain tile.

On the other hand, when reassembling the assembled state for mortar finish to use for P tile finish as shown in FIG. After reversing the inner frame 21 to which 31 is fixed, attach the distance piece 49 to the mounting rib 47.
Place the handle mounting bracket 4 on the bottom surface of the bottom plate 31.
1 is fixed in the same manner as above. After that, P tiles are pasted on the bottom plate 31. In either case, the protruding position of the mounting rib 47 and the thickness of the distance piece 49 are set so that the upper surface of the handle mounting bracket 41 coincides with each finished surface.

As mentioned above, the present invention differs from the conventional reversible type in that a simple flat plate-shaped distance piece is interposed between the mounting ribs formed on both sides of the handle mounting bracket and the bottom plate, that is, P-tile or mortar finish. The distance piece is simply transferred to the upper or lower surface of the mounting rib to fix it to the bottom plate, so the surface of the handle mounting bracket is always the upper surface, so the complex shaped grooves and spherical recesses can be used to handle the handle. It is not necessary to form the mounting bracket on both the upper and lower surfaces, and it is sufficient to form it on only one surface, so the overall shape of the handle mounting bracket becomes very simple. Therefore, the man-hours required for manufacturing the handle mounting bracket are significantly shortened, mold costs and material costs are saved, and there is no inconvenience of having to select whether or not a distance piece is required depending on the type of finish. An excellent effect is that there is no need to remove it from the handle mounting bracket and reinsert it when reversing it.

In this embodiment, the handle mounting bracket and the distance piece are fastened together to the bottom plate, but even when the inner frame is reversed, the positional relationship between the bottom plate and the distance piece may remain the same. If you fix the stance piece to the bottom plate in advance, you can simply flip the inner frame and bottom plate together with the distance piece and then attach the handle mounting bracket.
The work becomes easier.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the installation of a conventional inspection door cover (in the case of mortar finish), Figure 2 is an installation cross-section of the conventional floor inspection door cover (in the case of P-tile finish), and Figure 3
Figure 4 is an assembled perspective view of the floor inspection door cover of the present invention, Figure 4 is an exploded view of the handle and handle mounting bracket, and Figure 5 is an installation sectional view of the floor inspection door cover of the present invention. Fig. 6 is a cross-sectional view of the installation of the floor inspection port cover of the present invention (in the case of P-tile finish). 21...Inner frame, 31...Bottom plate, 41...Handle mounting bracket, 42...Handle storage groove, 43...Spherical recess, 47...Mounting rib, 49...Distance piece, 51... Toride.

Claims (1)

[Claim for Utility Model Registration] An inner frame 21 assembled into a rectangular shape with a size that fits into the outer frame 12 at a height that is the sum of the P tile finish thickness, mortar finish thickness, and bottom plate 31 thickness; A handle mounting hole 32 is drilled, and it is fixed to the inside of the inner frame 21 via the bottom plate receiver 22 so that one side has a P-tile finish thickness and the other side has a mortar finish thickness. a groove 42 into which the handle 52 of the handle 51 is fitted;
A handle mounting bracket 41 having a spherical recess 43 formed therein and having an insertion hole 44 for the leg 53 of the handle 51; two legs 53 to be inserted into the insertion opening 44; A handle 51 consists of a retaining washer 54 to be engaged and a grip 52 that fits into the groove 42; When the distance piece 49 interposed between the mounting rib 47 and the bottom plate 31 and the inner frame 21 are reversed, the P tile surface of the bottom plate 31 is on top, and the mortared surface is on top. and mounting ribs 47 integrally formed on both sides of the handle mounting bracket at a position and thickness such that the upper end of the handle mounting bracket 41 and the finished surface coincide with each other. Mouth lid.