JPS627787Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on the outer frame and inner part of a ceiling inspection opening placed in the ceiling for inspection and repair of various equipment such as piping, wiring, air ducts, etc. placed 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 with rivets or adhesives (see Japanese Utility Model Publication No. 49-33467).

However, since this ceiling inspection port is made by fixing the steel frame and the aluminum frame with rivets or adhesives, it can be manufactured at a low cost as a whole, and the ceiling inspection port can be finished using an aluminum profile instead of a conventional single profile. The aim was to maintain the same aesthetic appearance as the original, but it was not possible to replace the two parts midway through use.

In addition to the manufacturing advantages and aesthetics after installation as mentioned above, the purpose of this design was to make it possible to attach and detach only the edging part, allowing for free replacement in case of deformation, damage, discoloration, etc. during use. In addition, since the frame body and frame edging are connected by inserting and engaging frame clips, the assembly process is simplified and the complicated work of using rivets, adhesives, etc. is eliminated. To provide a frame for a ceiling inspection port, which can be used as an outer frame and an inner frame, and can improve product value.

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 is opened and closed via an outer frame 11 fitted into an opening 2 of the ceiling 1 and a frame opening 14 of the outer frame 11 via a shaft 17 using frame hanging fittings (not shown). Inner frame 12 attached to
and a cover plate 13 fixed to the inner frame 12 using mounting hardware (not shown) so as to close the frame opening 15 of the inner frame 12.

Further, the lid constituted by the inner frame 12 and the lid plate 13 is locked to the outer frame 11 by a locking device 16 in the closed position (the state shown in FIG. 1).

Further, the outer frame 11 and the inner frame 12 have a square planar shape, and a frame body 18,
It is composed of a frame edging 19 into which the lower end side of the frame body 18 is fitted, and a plurality of frame clips 20 that removably connect and fix the frame body 18 and the frame edging 19.

The frame body 18 that constitutes the outer frame 11 and the inner frame 12 is made by cutting a long steel strip plate into frame pieces of a predetermined length, and then cutting four of the frame pieces using corner pieces (not shown). It has a square frame with a substantially vertical frame web 21, a plurality of insertion holes 22 bored in parallel at appropriate intervals in the middle part of the frame web 21, and openings of the insertion holes 22. A support seat 23 that straddles the frame clip 20 formed on the edge
and a lateral flange 24 formed at the upper end of the frame web 21.

The horizontal flange 24 engages with a frame hanging metal fitting and a lid plate mounting metal fitting, thereby simplifying the installation.

Frame edging 1 coupled to the lower end of the frame body 18
Reference numeral 9 is made of non-ferrous metal such as aluminum alloy or brass, or synthetic resin, and here, a long edging material formed from an extruded material of hard vinyl chloride is cut into frame edging pieces of a predetermined length. It is made by framing four frame edging pieces into a square,
A substantially flat plate-shaped lateral protrusion 25 and its lateral protrusion 2
A pair of rising pieces 2 integrally installed on the upper surface of 5.
6, 27, and hook grooves 28, 29 formed on the side surfaces of the pair of rising pieces 26, 27.

The horizontal projecting edge 25 extends inwardly and outwardly so as to cover the finished surface 3 on the opening periphery of the ceiling 1 and the finished surface 4 on the peripheral end side of the lid plate 13, and has a rib on its peripheral end. 30 is projected upward so as to be attached to the finished surface 3.

Further, a pair of rising pieces 26 and 27 formed on the upper surface of the horizontal projecting edge 25 work together to form a guide groove 31 so as to sandwich the lower end of the frame web 21 and fix the frame web 21. has been done.

The frame clip 20 that connects the frame body 18 and the frame edging 19 is made of a non-ferrous metal such as aluminum alloy or brass, or a hard synthetic resin material, and here, it is injection molded or extruded from hard vinyl chloride. It is used by molding a long frame clip shape material and cutting it to a predetermined length.The frame clip is straddled over a support seat 23 formed at the opening edge of an insertion hole 22 formed in the frame body 18. A saddle portion 32 having an inner width suitable for the thickness of the frame body 18 so as to be positioned, and a pair of rising pieces 26 and 27 of the frame edging 19 extending downward from the saddle portion 32 are pinched and pressed from the outside. A pair of tightening pieces 33, 34; and a pair of tightening pieces 33, 3.
4, a rising piece 26,
It is constituted by hooks 35 and 36 which are resiliently engaged with hook grooves 28 and 29 formed in the hook 27.

Next, the assembly of the outer frame 11 and the inner frame 12 constructed as described above will be described. Four frame pieces cut to a predetermined length from a steel shape material are joined together at the corners.
Each frame edging piece forming a frame edging 19 is attached to the lower end of a frame body 18 formed by framing in a square shape using pieces (not shown).

That is, the lower end of the opening side of the frame body 18 is fitted between the pair of rising pieces 26 and 27 of the frame edging piece,
Thereafter, the frame clip 20 is inserted into the insertion hole 22 drilled in the frame body 18, and its saddle portion 32 is straddled over the support seat 23 formed at the opening edge of the insertion hole 32, and the pair of tightening pieces 33, 34 to the sides of the rising pieces 26 and 27 of the frame edging piece,
Hooks 35 and 36 formed protrudingly at the tips of the pair of tightening pieces 33 and 34 are connected to the pair of rising pieces 2.
Hook grooves 28, 29 drilled on the sides of 6, 27
are combined by multiplying.

The outer frame 11 and the inner frame 12 are formed by combining the frame main body 18 and the frame edging 19 at the stage of forming the frame pieces and the frame edging pieces, respectively, and then forming a square frame, or by forming the framed frame main body 18 and the frame edging. 19 can also be connected and assembled using frame clips 20.

3 to 8 show this modified ceiling inspection opening frame, and the ceiling inspection opening frame shown in FIG.
A pair of upright pieces 26, 27 formed in a pair of upright pieces 26, 27 are extended to the vicinity of the lateral protrusion 25 formed on the root side of the upright pieces 26, 27 so as to be pressed against the entire surface of the upright pieces 26, 27. The frame main body 18 and the frame edging 19 are connected to the clamping pieces 41 and 42 using a frame clip 45 having hooks 43 and 44 formed on the inner surfaces of the clamping pieces 41 and 42. be.

FIGS. 4 and 5 show another modified ceiling inspection opening frame, that is, an outer frame 50, in which the frame body 18 has an insertion hole 52 with a length more than twice the length of the frame clip 51 as appropriate. Form multiple in parallel at intervals,
Further, the frame edging 19 has a frame clip 51 at a position corresponding to an insertion hole 52 formed in the frame body 18.
A notch 54 having a length corresponding to the length of and a depth up to the hooking groove 53 is bored,
The frame clip 51 is attached to the frame body 18 with the frame border 19.
The frame clip 51 is connected so that it can be easily inserted in a framed state, and the frame clip 51 can be slid in the inserted state.

FIG. 6 shows a further modified ceiling inspection opening frame, that is, an outer frame 60, in which the frame edging 11,
19 and the frame clip 20, bend and extend the tip of one of the fastening pieces 62 of the frame clip 61 to form a hook 63, and form a lateral flange 65 constituting the frame edging 64 and a lateral flange 65 of the lateral flange 65. A hooking groove 67 is formed by a contact rib 66 protruding from the tip, and a hook 63 is engaged to connect the hook.

Further, a modification of the outer frame 70 shown in FIG.
A pair of tightening pieces 62 and 68 of a frame clip 61 are extended to form hooks 63 and 69, and the hooks 63 are connected to a hooking groove 67 formed at the tip of a lateral protrusion 65.

According to this invention, the frame body is made of two different materials: a frame body made of steel, and a frame edging made of non-ferrous metal or synthetic resin, which is joined by fitting the lower end of the frame body. The frame body and the frame edging are formed by drilling a plurality of insertion holes in the frame body and providing a support seat at the opening edge, and the frame edging has a pair of rising pieces protruding from the upper surface of the lateral projecting edge. , a hook groove is formed on the side surface of the rising piece, and the frame body and the lower end of the frame body are fitted between the pair of rising pieces, and the frame edging includes a saddle portion that straddles the support seat; A pair of tightening pieces extending downward from both sides of the saddle portion and pinching and pressing the sides of the pair of rising pieces; It is removably connected by a U-shaped frame clip formed by a hook that engages in a hook groove, and allows only the frame edging to be attached and removed to prevent deformation of the frame edging that appears on the finished surface of the ceiling during use. In addition to being able to be replaced freely in case of damage or discoloration, the frame body and frame edging are connected by insertion and engagement using frame clips, simplifying the assembly process and increasing product value. can do.

[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, Fig. 2 is an enlarged partial sectional view of the ceiling inspection port shown in Fig. 1, and Figs. FIGS. 6 and 7 are partially enlarged perspective views showing a modified example of the ceiling inspection opening frame shown in the figure, and FIGS. 6 and 7 are partially enlarged sectional views showing the modified examples. 18... Frame body, 19... Frame edging, 20...
Frame clip, 21...Frame web, 22...Insertion hole, 23...Support seat, 25...Sideward flange, 2
6, 27...Rising piece, 28, 29...Hooking groove, 32...Saddle part, 33, 34...Tightening piece,
35... Futsuku.

Claims (1)

[Scope of Claim for Utility Model Registration] A steel frame body having a plurality of insertion holes drilled in parallel at appropriate positions in the frame web and a support seat formed at the opening edge of the insertion holes, and a steel frame body made of steel. A lateral protrusion that extends outwardly from the inside of the frame body and is attached to the lower end of the frame body; A frame edging made of nonferrous metal, synthetic resin, etc., comprising a pair of rising pieces integrally formed on the edge, a horizontal protruding edge thereof, and a hook groove formed on at least one of the rising pieces; and the frame web. A saddle section that straddles the support seat formed in the seat, a pair of tightening pieces that extend downward from the saddle section and press down from the outside the rising pieces of the frame edging that sandwich the lower end side of the frame web, and This frame for a ceiling inspection port includes a plurality of U-shaped clips, each consisting of a hook projecting sideways and fitted into a hook groove, and having a frame edging removably connected to the frame body.