JPH0260823B2 - - Google Patents

Description

Detailed Description of the Invention The inspection port is composed of an outer frame fixed to the ceiling or wall, and an inner frame rotatably supported within the outer frame. When installing it on a surface, etc., conventionally, for example,
As shown in Publication No. 11623, an outward flange is provided that projects outward from the outer frame to support the periphery of the opening on the ceiling surface, and is fixed to the outer frame or attached to the clamp screw rod of the hanging bracket. A ceiling board is sandwiched between the outward flanges of the frame and the ceiling board is used as a support substrate.

However, in such conventional inspection ports,
The outward flange of the outer frame is essential for installation in a ceiling opening, etc., and it meets the design requirement of forming a clear wall surface without exposing the flange part to the wall surface as much as possible. It had the disadvantage of not being able to respond.

The present invention has been made in response to these circumstances, and it is an object of the present invention to provide an inspection port that can be installed in a ceiling opening, etc., without providing an outward flange on the outer frame. do.

Hereinafter, preferred specific examples of the inspection port according to the present invention will be described with reference to the drawings.

1 to 11 show a tenth embodiment of the inspection port of the present invention, which is embodied as a ceiling inspection port and installed in the ceiling 100 of a building.

The ceiling inspection opening 10 is an opening 103 in a ceiling 100 where a ceiling finishing material 102 is bonded to a ceiling material 101.
A rectangular outer frame 11 fitted into the rectangular outer frame 1
A rectangular inner frame 12 arranged in a frame opening 21 of the rectangular outer frame 11 so as to be rotatably assembled to the rectangular outer frame 11.
and a cover plate 13 disposed on the rectangular inner frame 12 so as to close the frame opening 22 of the rectangular inner frame 12;
A pair of shafts 14 are biased toward one side and protrude from the left and right outer surfaces of the inner frame 12, that is, the inner frame web 34, and the outer frame 11 is configured to rotatably support the shafts 14. , that is, the outer frame web 2
A pair of bearings 15 arranged on the left and right inner surfaces of 3;
A locking device 16 for the inner frame 12, a pair of rod guide plates 17 arranged on the left and right inner surfaces of the outer frame web 23 for the pair of rods 56 of the locking device 16, and the lid. Four holding plates 18 that fix the board 13 to its inner frame 12, and four holding plates 18 that suspend its outer frame 11 from the construction channel 104.
The structure is such that the square outer frame 11 and the square inner frame 12 that are exposed on the ceiling 100, that is, the ceiling surface, are reduced as much as possible. 13 assemblies, i.e. the lid is in the closed position (first,
2, 7 and 8), it is locked to its outer frame 11 by the locking device 16, and if the locking device 16 is unlocked, the shaft 14
and by means of bearings 15, it is rotated downward and opened.

In particular, an escape space 20 is formed between the outer frame 11 and the inner frame 12 to prevent the inner frame 12 from hitting the outer frame 11 when the inner frame 12 is opened and closed while rotating. Of course, the escape space 20 is formed by a flange 28 with an upward lip protruding from the inner surface of the outer frame web 23 at the lower end of the outer frame web 23, and by a flange 28 with an upward lip protruding from the inner surface of the outer frame web 23, and at a lower end of the inner frame web 34 by the inner frame web 34. A flange 35 with an upward lip protrudes from the outer surface of the flange 35.

The outer frame 11 and inner frame 12 are constructed in a rectangular shape from outer frame and inner frame pieces cut to a predetermined length from a long extruded aluminum alloy frame section.

That is, the outer frame 11 is made by assembling four outer frame pieces cut from an outer frame shape having the cross-sectional shape shown in FIGS. 2 and 3 in a square shape, as shown in FIGS. 3, 5, and 8. At the butt part, that is, the corner part, four outer frame corner pieces 3
2 are framed together in a square shape, and the flat outer frame web 23 and the outer frame web 23 face each other so as to form fitting grooves 26 and 27 for the hanging fittings 19. ribs 24 with upward and downward lips protruding from the outer surface;
25, and a fitting groove 3 for the outer frame corner piece 32 and the flange reinforcement corner piece 33.
0,31, the outer frame web 23
It is comprised of flanges 28, 29 with upward and downward lips protruding from the inner surface of the outer frame web 23 at the upper and lower ends thereof.

In particular, the ribs 24 and 25 with upward and downward lips for the hanging fitting 19 are formed on the outer surface of the outer frame web 23 at predetermined intervals in the vertical direction of the outer frame web 23, and The lipped rib 24 is at least
By positioning the outer frame web 23 upward from the lower end by the thickness of the ceiling finishing material 102,
A space for installing the ceiling finishing material 102 is secured at the lower end of the outer frame 11, and the ceiling finishing material 10
The lipped ribs 24 are prevented from being exposed on the surface of the ceiling finishing material 102, and consideration has been given so that a good appearance can be obtained without adding any new processing, such as forming notches in the ceiling finishing material 102. There is. Also,
A rib 25 with a downward lip is formed at the upper end of the outer frame web 23.

Furthermore, the flange 28 with an upward lip includes:
A sloping surface is attached to the upward lip, thus dropping the meat on the upper part of the upward lip,
It is provided as a relief for rotating the inner frame 12 to open and close it.

On the other hand, the inner frame 12 is made of four inner frame pieces cut from an inner frame member having a cross-sectional shape shown in FIGS. 2 and 3.
As shown in FIGS. 2 and 4, four corner pieces 41 for inner frames are used to frame the books in a square shape. At the upper and lower ends of the inner frame web 34, grooves protrude from the outer surface of the inner frame web 34 to form fitting grooves 37, 38 for the inner frame corner pieces 41. a step 39 projecting from the inner surface of the inner frame web 34 at the upper end of the inner frame web 34, including flanges 35, 36 with upward and downward lips;
It is composed of a rising edge 40 integrally formed with.

As shown in FIG. 8, when the inner frame 12 is closed, the step 39 hits the inner frame stopper 67 of the rod guide plate 17 and brings the lower end of the inner frame 12 to the lower end of the outer frame 11. At the same time, the rod 56 and rod receiver 57 of the locking device 16
are aligned with each other to make it easier to insert the rod 56 into the rod receiver 57. Further, a pair of rod guide holes 64 for the rod 56 are formed in the rising edge 40, as shown in FIG.

In addition, the flange 35 with an upward lip is provided with an inclined surface on the upward lip, similar to the case of the flange 28 with an upward lip on the outer frame 11, so that the upper part of the upward lip is stripped of the flesh. Outer frame 11 when inner frame 12 is rotated open and closed
I'm trying to escape to avoid being hit.

Like the ceiling material, the lid plate 13 is made up of a ceiling plate 42 and a ceiling finishing material 43 that are bonded to each other, and is formed into a rectangular shape so as to be fitted into the frame opening 22 of the inner frame 12. The lid plate 13 has the seventh, eighth,
As understood from Figures 10 and 11, screw 7
9 and nuts 80 to the presser plate 18 attached to the inner frame 12 with wood screws 44 and fixed to the inner frame 12.

As understood from FIGS. 3 and 4, the pair of shafts 14 are fixed to left and right inner frame corner pieces 41 on one side by caulking their bases. The shaft 14 has a flange head 45 formed at its tip, and the flange head 45 is hooked onto a flange receiving stage 54 formed in the bearing seat 47 of the bearing 15. Therefore, the inner frame 12 is reliably assembled to the outer frame 11 so that the inner frame 12 does not fall off from the outer frame 11 because the flange head 45 is hooked to the flange receiving stage 54.

As can be seen from FIGS. 3, 5 and 6, each of the pair of bearings 15 is composed of a bearing body 46 and a bearing seat 47.

The bearing body 46 is pressed from a steel plate, and has a U-shaped notch bearing groove 49 formed in a pocket-shaped overhang portion 48 for the bearing seat 47, and the notch Dowel holes 50 are formed in the pocket-shaped overhang portions 48 on both sides of the bearing groove 49.

Furthermore, the bearing body 46 has a flange reinforcing corner piece 33 continuously formed at one end to reinforce the upwardly lipped flange 28. Of course, the bearing body 46 has a bearing seat 47 fitted into its pocket-shaped overhang 48 so that the outer frame 11, i.e. the outer frame web 23
is screwed to the left and right inner surfaces of the

The bearing seat 47 is molded from a synthetic resin, preferably a synthetic resin with excellent lubricity and wear resistance, such as polyamide resin or fluororesin, and is provided with a U-shaped notched bearing groove 51. .

Further, the bearing seat 47 includes a U that is fitted into the notched bearing groove 49 of the bearing body 46.
A rib 52 is aligned with the U-shaped notched bearing groove 51 and protrudes from the surface thereof, and dowels 53 are respectively protruded from the surface on both sides of the U-shaped rib 52, and the bearing seat 4
7 is fitted into the overhanging portion 48, its dowel 53 is fitted into the dowel hole 50 of the bearing body 46, positioning the bearing body 46 and the bearing seat 47 relative to each other.

Further, a flange receiving step 54 is formed on the back surface of the bearing seat 47, and the flange receiving step 54 accommodates and hooks the flange head 45 of the shaft 14 fitted into the bearing groove 51. 14 is prevented from falling out.

Furthermore, a pair of stoppers 55 are protruded from the inner surface of the notched bearing groove 51 in the bearing seat 47, and the stopper 55 allows the shaft 14 to be fitted into the bottom surface of the notched bearing groove 51 in a stop-like manner.
The shaft 14 is restrained there.

The pair of bearings 15 thus described are the first
It is also possible to construct a pair of bearings 110 as shown in FIGS. 2 to 14.

The bearing 110 omits the bearing body 46 of the bearing 15, adds a reinforcing structure to the bearing seat 47, and includes a pair of quick fasteners 1.
14, which can be fixed to the outer frame web 23 of the rectangular outer frame 11, and components corresponding to those of the bearing seat 47 are given the same reference numerals.

The bearing 110 is integrally molded from a synthetic resin, preferably a synthetic resin with excellent lubricity and wear resistance, such as polyamide resin, fluororesin, etc.
A plate-shaped bearing body 111 in which a U-shaped notched bearing groove 51 is formed, a flange receiving step 54 formed on the back surface of the bearing body 111, and a pair of stoppers 55 protruding from the inner surface of the notched bearing groove 51. Further, the bearing 110 includes a bearing body 11 thereof.
A reinforcing bridge 112 is integrally formed on the back surface of 1.

The reinforcing bridge 112 is protruded from the back surface of the bearing body 111 so as to form a pocket at the bottom of the notched bearing groove 51.
This prevents a decrease in the strength of the bearing body 11 due to this, and prevents the bearing body 111 from breaking.

Also, a pair of quick fasteners 114 for fixing the bearing body 111 to the outer frame web 23.
is coaxial with a pair of pin holes 113 formed in the bearing body 111.
A pair of slotted sleeves 11 protruding from the back side of the
5 and a dowel pin 116 for pushing and expanding the slotted sleeve 115.

Corresponding to the construction of the bearing 110, the outer frame web 23 of the rectangular outer frame 11 has an opening 117 for receiving the reinforcing bridge 112 and a pair of holes 118 for the quick fasteners 114.
is formed.

The locking device 16 comprises, on the other side, a pair of rods 56 arranged in the inner frame 12 as locking rods, as can be seen from FIGS. 2, 7 and 8.
and the outer frame 1 so as to receive the rod 56.
A pair of rod receivers 57 arranged at 1, an operation plate 58 connecting the rods 56, and the operation plate 5
8 from the outside of the cover plate 13, and a support pin 60 that rotatably supports the operation plate 58.

The rod 56 has its base connected to the operating plate 58 with a pin, and its distal end passes through the rod guide hole 64 so that the distal end can receive the rod, that is, be inserted into and removed from the rod receiving hole 57. As shown in FIGS. 2 and 7, the operation plate 58 is bent into a hat shape in vertical section and is rotatably supported by a support pin 60 fixed to a bracket 62 screwed to the inner frame 12. ing.

The operation plate 58 extends to the inner surface of the inner frame 12, that is, the inner frame web 34, and has an elongated hole 61 formed in the elongated portion, into which one end of the operating crankshaft 59 is fitted. I'm here.

The operating crankshaft 59 has a crank portion at one end, and the tip of the crank portion is fitted into the elongated hole 61 of the operating plate 58. The crankshaft 59 has its other end exposed on the surface of the cover plate 13, and is attached to the inner frame web 34 by a clip band 63 serving as a bearing. Therefore, the locking device 16 is locked and unlocked by rotating the crankshaft 59 from the surface side of the cover plate 13. That is, when the crankshaft 59 is rotated in this way, the operation plate 58 swings around the support pin 60, and the operation plate 58
As the rod 56 rotates, the tip of the rod 56 is moved in and out of the rod receiving hole 57. Further, in order to allow the crankshaft 59 to pass through, a notch (not shown) formed in the cover plate 13 is hidden by a washer 90 attached to the inner frame web 34.

A pair of rod guide plates 17 are provided on the other side for the rods 56 of the locking device 16, as shown in FIGS.
They are arranged on the left and right inner surfaces of the outer frame 11, that is, the outer frame web 23.

The rod guide plate 17 is molded from synthetic resin, and in particular, as can be easily understood from FIG.
and an arcuate rod guide surface 66 formed at the center of the upper end of the guide plate body 65.
and a pair of inner frame stoppers 6 integrally formed on both sides of the upper end of the guide plate main body 65 so as to sandwich the rod guide surface 66.
7, a stopper rib 68 extending vertically and protruding from the inner frame side surface of the guide plate main body 65, an inner frame guide surface 69 formed at the lower part of the stopper rib 68, and the guide plate body 65. - Notch/pin hole 70 formed in the plate body 65
and a slotted sleeve 71 that is aligned with the notch/pin hole 70 and protrudes from the side surface of the outer frame of the guide plate main body 65.

The rod guide surface 66 is located slightly above the stop surface 72 of the inner frame stopper 67, and the edge of the inner frame side surface is chamfered.

The inner frame stopper 67 protrudes from the inner frame side surface of the guide plate main body 65 so as to receive the step 39 of the inner frame 12, and is wedge-shaped with a stopper surface 72 formed below.

The stopper rib 68 positions the inner frame 12 with respect to the outer frame 11 when the inner frame 12 is closed, and the inner frame guide surface 69
When the inner frame 12 is closed, the inner frame 12 is smoothly rotated with respect to the outer frame 11 while guiding the inner frame 12 to the stopper rib 68, and has an inclined surface. There is.

The rod guide plate 17 integrally formed in this way is similar to the guide plate main body 6.
While positioning the stepped thin tongue 73 at the lower end of the outer frame 11 on the upwardly lipped flange 28 of the outer frame 11,
Insert the slotted sleeve 71 into the sleeve hole 74 formed in the outer frame web 23 of the outer frame 11, attach the guide plate main body 65 to the inner surface of the outer frame web 23, and then insert the notch pin 75 into the notch. Drive the pin through the hole 70 and insert the sleeve 7.
1 is expanded and fixed to its outer frame 11.

When the rod guide plate 17 is attached to the outer frame 11 in this way, the rod guide surface 66 is positioned slightly above the lower part of the rod receiver 57, and the tip of the rod 56 is This makes it easy to insert into the receiver 57.

As shown in FIGS. 7, 8, 10 and 11, the holding plate 18 is made by bending an angle section pressed from a steel plate at a right angle at a notch 78, and has a hole on one side. A slot 76 for the wood screw 44 is opened in the length direction, and on the other side, a long hole (not shown) for a screw 79 into which the nut 80 is screwed is opened in a direction perpendicular to the length direction. It is opened to

The slot 76 has a pair of cut-and-raised opening edges 77 which are opposed to each other and project from the upper surface of one side of the holding plate 18, so that the slot 76 can be engaged with the thread of the wood screw 44. The pressing plates 18 pressed in this manner are placed at each of the four corners of a rectangular ceiling plate 42 that has been cut to fit into the inner frame 12, and the wood screws 44 are inserted into the slots 76 through the ceiling plate 42. , is fixed to the ceiling board 42. Next, a ceiling finishing material 43 is bonded to the ceiling board 42 so as to fill the heads of the wood screws 44. Once the ceiling finishing material 43 is adhered in this way, the cover plate 13 is fitted into the inner frame 12, and the long holes are aligned with screw holes (not shown) formed in the inner frame web 34 of the inner frame 12. Because it is, screw 79
and nuts 80 to hold the presser plate 18 to the inner frame web 34.
In this way, the holding plate 18 attaches the cover plate 13 to the inner frame 12. In particular, the holding plate 18 has a pair of cut and raised opening edges 7 facing each other.
7, so the wood screw 4
Makes screwing in step 4 easier.

As shown in FIGS. 1, 2 and 11, the hanging fitting 19 includes a carrier plate 81 for suspending the rectangular outer frame 11 in the construction channel 104;
a clamp plate 82 for securing the carrier plate 81 to the erection channel 104;
In cooperation with the clamp plate 82, the carrier plate 81 is attached to the erection channel 10.
4 and the clamp plate 82 to its carrier plate 81.
It includes a screw 84 and a wing nut 85 that are fastened to.

The carrier plate 81 has the fitting groove 2
A plate-shaped hook 86, which is fitted while being rotated to the lower end of the hook 6 and 27, is provided at the lower end, and a bending arm 87 is provided at the upper end. The hooks 86 are vertically long, that is, the vertical length is set to match the distance between the ribs 24 and 25, and the horizontal width is shorter than the distance between the ribs 24 and 25. First, make the upper and lower corners of the carrier plate 8 circular.
1 horizontally, rotate the carrier plate 81 to the position shown in the figure, that is, to the vertical position, while applying the hook 86 to the outer surface of the outer frame web 23 from between the lips of the ribs 24 and 25.
The carrier plate 81 is fitted into the fitting grooves 26 and 27 and screwed together, so that the carrier plate 81 can be assembled to the outer frame 11.

The carrier plate 81 also has a threaded hole (not shown) formed in its arm 87, into which a clamp threaded rod 83 can be screwed. Also, the carrier plate 81 is attached to the screw 8
4, a long hole 88 is formed in the length direction.

Clamp plate 82 is configured to be used in conjunction with carrier plate 81;
Arm 89 that receives the lower surface of the construction channel 104
is formed at the lower end, and furthermore, a carrier plate 8
An elongated hole (not shown) for the screw 84 which is fitted into the elongated hole 88 of No. 1 is formed in the longitudinal direction.

In the ceiling inspection opening 10 described above, the rectangular outer frame and inner frame 11, 12 use four outer corner corner pieces 32, 41, respectively, and the four outer frame and inner frame corner pieces 32, 41 are used in the frame device. The inner frame pieces are each framed, in which case the shaft 14 is attached to the inner frame 12, and the cover plate 13 is easily attached to the inner frame 12 using four holding plates 18, and further,
In this way, a pair of bearings 15 are screwed to the framed outer frame 11, a locking device 16 is also attached to the inner frame 12 side, and a pair of rod guide plates 17 are attached to the knobs. It is attached to the outer frame 11 with pins 75 and assembled. The ceiling inspection opening 10 is located in the opening 103 of the ceiling 100, and then the hook 86 of the carrier plate 81, on which the clamp plate 82 has been temporarily assembled, is inserted into the notch (not shown) of the rib 24 with an upward lip. ) to the fitting groove 26,2
7 and insert the arm 89 of the clamp plate 82 into the construction channel 104.
Tighten the wing nut 85 while pressing against the bottom surface of the
The clamp plate 82 is fixed to the carrier plate 81, and while the clamp screw rod 83 is screwed into the screw hole of the arm 87 of the carrier plate 81, the tip of the screw rod is strongly pressed against the construction channel 104, and the ceiling 100 is fixed. It is installed in the opening 103.

As is clear from the above description, according to the inspection port according to the present invention, a clamp plate is attached to a hanging metal fitting fixed to an outer frame, and an erection channel is held between this clamp plate and a clamp threaded rod. Since it is fixed to the ceiling or wall opening, it is possible to provide an inspection port with a clear joint without requiring an outward flange of the outer frame.

Furthermore, since the fitting groove for locking the plate-like hook of the hanging fitting is formed on the outer periphery of the outer frame and located above at least the thickness of the finishing material of the ceiling or wall, it is possible to There is no need to do any special work on the finishing material, which improves installation workability, and even after installing the inspection port, there is no need to expose the inset grooves on the surface of the ceiling or wall finishing material. You can prevent this and obtain a good appearance.

Furthermore, since the clamp plate is vertically adjustable, there is no need to accurately arrange the construction channel, which simplifies the installation work.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the inspection port of the present invention, which is embodied as a ceiling inspection port in a building, viewed from above;
The figure is a cross-sectional view taken along line 2-2 in Figure 1;
Fig. 3 is a sectional view taken along line 3-3 in Fig. 1, Fig. 4 is a partial perspective view of the corner part of the ceiling inspection opening shown in Fig. 3, and Fig. 5 is a shaft-bearing Fig. 6 is an exploded perspective view of the bearing shown in relation to the outer frame of the ceiling inspection port, and Fig. 7 partially shows the locking device of the ceiling inspection port. 8 is a sectional view taken along line 8-8 in FIG. Figure 10 is a top view of the holding plate of the ceiling inspection port, and Figure 11 is a top view of the corner part of the ceiling inspection port on the shaft-bearing side to show the relationship between the holding plate shown in Fig. 10, the inner frame, and the cover plate. 12 is a sectional view corresponding to FIG. 5 of the bearing modified to be suitable for the ceiling inspection opening shown in FIG. 1, and FIG. 13 is a sectional view corresponding to 1 of FIG.
A cross-sectional view taken along the line 3-13, and the 14th
The figure is a partially exploded perspective view of the bearing and outer frame shown in FIGS. 12 and 13. 10...Ceiling inspection port, 11...Rectangular outer frame, 12
...Rectangular inner frame, 13 ... Lid plate, 14 ... Shaft, 1
5,110...bearing, 16...locking device, 17...
... Rod guide plate, 18 ... Holding plate,
19...Hanging fittings, 20...Escape space, 21,2
2... Frame opening, 23... Outer frame web, 34... Inner frame web, 42... Ceiling plate, 43... Ceiling finishing material, 46, 111... Bearing body, 47... Bearing seat, 56... ... Rod, 57 ... Rod receiver, 58 ... Operation plate, 59 ... Operation crank shaft, 65 ... Guide plate body,
66...Rod guide surface, 67...Inner frame stopper, 76...Slot, 77...Cut opening edge,
81...Carrier plate, 82...Clamp plate, 83...Clamp threaded rod, 100
... Ceiling, 103 ... Opening, 104 ... Erection channel, 112 ... Reinforcement bridge, 114 ... Quick fix.

Claims (1)

[Scope of Claims] 1. A plate-shaped hook, which is formed by rotatably assembling an inner frame within a rectangular outer frame, and which engages in a fitting groove formed on the outer periphery of the outer frame, and this plate. A carrier plate extending from the shaped hook to the back side of the outer frame and having a long hole formed in the longitudinal direction thereof, a bending arm protruding from the upper end of the carrier plate toward the outside of the outer frame, and this bending arm. The clamp threaded rod screwed into the screw hole formed in the arm and the screw inserted into the long hole of the carrier plate fix the position in an adjustable manner. Alternatively, the inspection port is fixed to an opening formed in the ceiling, wall, etc. of a building by using a hanging fitting consisting of a clamp plate having an arm for holding an erection channel arranged on the back side of the wall, An inspection port characterized in that a fitting groove is formed upward from the lower end of an outer frame by at least the thickness of a finishing material such as a ceiling or wall.