JPS6219784Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the outer frame and inner part of a ceiling inspection opening that is installed in the ceiling for inspection and repair of various equipment such as piping, wiring, air ducts, etc. located inside the ceiling of a building. This invention relates to a frame for a ceiling inspection port used as a frame.

Conventionally, a ceiling inspection opening consists of an outer frame that is fitted into an opening in the ceiling and a lid that opens and closes the frame opening of the outer frame, and the lid also includes an inner frame and a cover plate that closes the inner frame opening. Generally, it consists of more than one.

Furthermore, for the ceiling inspection opening, we used an aluminum profile for the part that is visible on the ceiling surface, that is, the inspection part, and iron for the invisible part.
It has been proposed that an aluminum outer frame and an aluminum inner frame are fitted into the lower end of an iron inner frame and joined together with rivets or adhesives (see Japanese Utility Model Publication No. 49-33467).

However, since this ceiling inspection hole only used an aluminum profile on the side that appeared on the ceiling surface, when used as an outer frame, it was necessary to hang the frame on a part of the upper end of the iron outer frame. If there are holes for metal fittings, etc., and if the inside frame is used as an inner frame to which a cover plate is attached, it is essential to make holes for the metal fittings in a part of the lower end of the iron inner frame. It was necessary to carry out a separate machining operation for this purpose, and an edge treatment process was also required to prevent rust in addition to the frame edges.

The purpose of this invention is to have a steel frame body that is placed in an opening formed in the ceiling of a building, and is made up of a substantially vertical frame web with horizontal ridges projecting from the upper and lower ends, and a steel frame body that is placed in an opening formed in the ceiling of a building. a frame edging made of synthetic resin, which forms an insertion groove on the upper surface side of the frame web, which is inserted into the lateral protruding edge of the lower end of the frame web and is secured to the crown;
An insertion groove is formed on the lower surface side of the frame web so as to face the frame edging, and is inserted into the lateral protruding edge of the upper end of the frame web so as to be fitted with the crown, and in cooperation with the frame web, the insertion groove is installed downwardly. By constructing the downward protruding edge that forms the groove and the protruding synthetic resin frame edge cover, it not only looks beautiful after installation as a ceiling inspection port, but also provides a mounting area for frame hanging brackets or mounting brackets. There is no need to provide the frame web of the steel frame body, and there is no need for post-processing of the steel frame body or edge treatment of the frame body, making the assembly work extremely simple. To provide a frame for a ceiling inspection port that can be used for a long period of time by preventing the frame edging and the frame edge cover, which are capped and locked to the upper and lower ends of a main body, from coming off.

The configuration of this invention will be described in detail below based on the embodiments shown in the accompanying drawings.

Figures 1 and 2 show an opening 2 in a ceiling 1 of a building.
A ceiling inspection port 10 installed in the ceiling is shown, and the ceiling inspection port frame is embodied as an outer frame 11 and an inner frame 12.

The ceiling inspection opening 10 includes an outer frame 11 that is fitted into an opening 2 of the ceiling 1 using a frame hanging fitting 3;
An inner frame 12 is attached to the frame opening 14 of the outer frame 11 so as to be opened and closed via the shaft 4, and a mounting bracket 5 is attached to the inner frame 12 so as to close the frame opening 15 of the inner frame 12. The cover plate 13 is fixed to the cover plate 13.

Moreover, the lid constituted by the inner frame 12 and the lid plate 13 is in the closed position (the state shown in FIG. 1).
At this point, it is locked to the outer frame 11 by the locking device 6. Therefore, the lid, that is, the inner frame 12 and the lid plate 13 can be opened by unlocking the locking device 6.
It rotates downward around axis 4 and is released.

Further, the outer frame 11 and the inner frame 12 have a square planar shape, and a frame body 16,
It is composed of a frame edging 17 which is placed on the finished surface 7 side of the ceiling 1 and which locks the lower end of the frame body 16, and a frame edge cover 18 which locks the upper end of the frame body 16. There is.

The frame body 16 that constitutes the outer frame 11 and the inner frame 12 is constructed by cutting a long steel strip into frame pieces of a predetermined length, and screwing four of the frame pieces using corner pieces 19. The frame web 20 has a substantially vertical frame web 20 and the frame web 2 has a square frame.
The frame web 20 has a lateral protruding edge 21 projecting from the upper end thereof, and a lateral protruding edge 22 protruding from the lower end of the frame web 20 opposite to the lateral protruding edge 21.

The frame edging 17, which is secured to the lower end of the frame body 16, is made of synthetic resin and includes a horizontal flange 23 and a pair of rising pieces 24, 25 integrally formed on the horizontal flange 23. , an insertion groove 26 formed on the upper surface side of the horizontal flange 23 and communicating with the gap between the pair of rising pieces 24 and 25 so as to insert the horizontal protrusion 22 at the lower end of the frame main body 16. Further, the frame edging 17 has a notch formed inside one of the rising pieces 25, and when the frame edging 17 is capped and locked to the lower end of the frame main body 16,
The raised piece 25 and the frame web 20 form an upward guide groove 27 for the corner piece 19.

The frame edge cover 18 which is secured to the upper end of the frame body 16 is made of a synthetic resin material like the frame edging 17, and is integrally vertically disposed on the horizontal flange 28. A pair of downward projecting edges 29, 30 and a lateral flange 28 thereof
On the lower surface side of the frame body 16, a pair of hanging pieces 29, 3
The frame edge cover 1 is composed of an insertion groove 31 formed in communication with the gap 0, and the frame edge cover 1.
8 forms a notch inside one of the downward projecting edges 30, and attaches the frame edge cover 1 to the upper end of the frame body 16.
In the state in which the corner piece 8 is locked, its downwardly directed flange 30 cooperates with the frame web 20 to form a downwardly directed mounting groove 32 for the corner piece 19 .

A frame hanging fitting 3 for fixing the outer frame 11 to the ceiling 1 includes a clamp screw 4 equipped with a clamp washer 41.
2, and a hanger bracket 4 which is screwed onto the clamp screw 42 and has a hook 43 at its tip.
4, and attach the tip of the hook 43 to the frame body 1.
The clamp washer 41 is attached to the ceiling 1 by hooking it onto the downward mounting groove 32 formed in cooperation with the notch formed in the downward projecting edge 29 of one of the frame web 20 and the frame edge cover 18 of No. 6. The clamp screw 42 is turned and tightened so as to press against the back surface of the ceiling 1, and the open end of the ceiling 1 is clamped and fixed between the clamp washer 41 and the horizontal flange 23 of the frame edging 17.

A plurality of mounting fittings 5 for fixing the lid plate 13 attached to the inner frame 12 connect the hooks 52 of the hanger bracket 51 to the frame web 2 of the frame body 16.
A clamp screw is hooked onto a downward mounting groove 32 formed in cooperation with a notch formed in a downward projecting edge 29 of one of the frame edge covers 18 and the hanger bracket 51 is screwed into the clamp screw. 53 and presses the tip of the clamp screw 53 against the back surface of the cover plate 13 to fix the cover plate 13 to the inner frame 12.

According to this invention, a steel frame body is arranged in an opening formed in the ceiling of a building, and is made of a substantially vertical frame web with sideways protruding edges at the upper and lower ends, and a finished surface of the ceiling. A frame edging made of synthetic resin that is located on the side and forms an insertion groove on the upper surface side that is inserted into the lateral protruding edge of the lower end of the frame web and is secured to the crown, and facing the frame edging. An insertion groove is formed on the lower surface side of the frame web to be inserted into the horizontal protruding edge at the upper end of the frame web and secured to the crown, and a downward protruding edge is protruded to form a downward mounting groove in cooperation with the frame web. By constructing the frame with a frame edge cover made of synthetic resin, it not only looks good after installation as a ceiling inspection port, but also allows the mounting part for the frame hanging bracket or mounting bracket to be attached to the frame web of the steel frame body. There is no need for post-processing on the steel frame body or treatment of the edges of the frame body, making the assembly work extremely simple, and the caps can be secured to the top and bottom ends of the frame body after installation in the ceiling opening. It is possible to withstand long-term use by preventing the frame edging and frame edge cover from coming off.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a ceiling inspection port using the ceiling inspection port frame of this invention, and FIG. 2 is an enlarged partial sectional view of the ceiling inspection port shown in FIG. 1. 1...Ceiling, 2...Opening, 11...Outer frame, 12
...Inner frame, 16...Frame body, 17...Frame edging,
18...Frame edge cover, 20...Frame web, 21,
22... Lateral projecting edge, 26, 31... Insertion groove,
29, 30...Downward projecting edge, 32...Downward mounting groove.

Claims (1)

[Scope of utility model registration request] The main body of the steel frame is arranged in an opening formed in the ceiling of a building and is made up of a substantially vertical frame web with horizontal protrusions projecting from the upper and lower ends of the frame web, and the frame web is located on the finished side of the ceiling. A frame edging made of synthetic resin that forms an insertion groove on the upper surface side of the frame that is inserted into the lateral protrusion at the lower end and is secured to the crown, and a lateral protrusion at the upper end of the frame web opposite to the frame edging. A frame edge cover made of synthetic resin, which has an insertion groove formed on its lower surface side to be inserted into and secured to the frame, and has a protruding downward protruding edge that cooperates with the frame web to form a downward mounting groove. Frame for ceiling inspection port including.