JPH11159120A - Structure of ceiling inspection hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve airtightness between a mounting frame and a heat-insulated intermediate cover sufficiently and reduce costs in spite of a structure in which the heat-insulated intermediate cover is easily fitted from the upper side of the mounting frame. SOLUTION: A mounting frame 3 is installed to an opening section 2 formed to a ceiling 1. An inspection cover 4 opening and closing the lower section 3b of the mounting frame 3 is mounted on the lower section 3b side of the mounting frame 3. A heat-insulated intermediate cover 5 is arranged to the upper section of the inspection cover 4. The side face 5a of the heat-insulated intermediate cover 5 is composed of an inclined plane 7 inclined towards the inside with proceeding to the lower side. The heat-insulated intermediate cover 5 is fitted on the upper section 3a side of the mounting frame 3 in a freely upward push-up manner while a flange section 8 retained to the upper end face 3c of the mounting frame 3 is protruded from the upper section of the heat-insulated intermediate cover 5. A packing material 9 for closing an opening between the heat-insulated intermediate cover 5 and the mounting frame 3 is set up extending over the whole circumference of the upper section 5b of the side face 5a of the heat-insulated intermediate cover 5 from the whole circumference of the underside of the flange section 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a ceiling inspection port for inspecting a space above a ceiling.

[0002]

2. Description of the Related Art In a house structure, a ceiling inspection port is generally provided in a ceiling portion of a living space or a closet space, for example. This ceiling inspection opening is used as an entrance for inspection work behind the ceiling, and is closed by an inspection lid when not in use. However, when the whole house is not airtight, the ceiling inspection opening is used. Outside air enters the room through a gap between the door and the inspection lid, and gives a feeling of discomfort to a person in the room. If the gap between the ceiling inspection port and the inspection lid is to be completely eliminated, there is a problem that the cost is high and the inspection lid is difficult to attach and detach.

As a solution to this problem, for example, Japanese Utility Model Laid-Open No. 5-5
In JP-A-4739, as shown in FIG. 5, a heat-insulating inner lid 5 'is arranged above an inspection lid 4, and a flange portion 8 provided on the heat-insulating inner lid 5' is attached to the opening 2 of the ceiling 1. What is mounted on the upper end surface of the frame 3 is known.

[0004]

However, in the structure of the conventional ceiling inspection port, the flange portion 8 of the heat-insulating inner lid 5 'is not provided.
Since the seal member 20 is provided between the heat-insulating inner lid 5 'and the upper end surface of the mounting frame 3 to merely seal the space between the heat-insulating inner lid 5' and the mounting frame 3 only by the load of the heat-insulating inner lid 5 ', it is sufficient. Since the airtightness is not obtained, and the gap S is formed between the side surface of the heat-insulating inner lid 5 'and the inner peripheral surface of the mounting frame 3, not only the heat-insulating effect is reduced but also the heat-insulating inner lid 5' There is a problem in that rattling is likely to occur, and, for example, when vibration is applied, the heat-insulating lid 5 'is left floating, and the airtightness is further impaired. Conventionally, in order to improve airtightness,
For example, if the gap S between the side surface of the heat-insulating inner lid 5 ′ and the inner peripheral surface of the mounting frame 3 is to be eliminated, when the heat-insulating inner lid 5 ′ is fitted from above the mounting frame 3, ′ Is hooked on the mounting frame 3 and the fitting work becomes difficult, so that it has not been possible to obtain both the easy fitting of the heat insulating middle lid 5 ′ and the improvement of the airtightness and the heat insulating property.

The present invention has been made in view of the above conventional example, and has a structure in which the heat-insulating inner lid is easily fitted from above the mounting frame, while sufficiently improving the airtightness between the mounting frame and the heat-insulating inner lid. It is an object of the present invention to provide a structure of an inexpensive ceiling inspection port capable of removing an insulated inner lid from below a mounting frame.

[0006]

In order to solve the above-mentioned problems, the present invention provides a method for mounting a mounting frame 3 on an opening 2 provided in a ceiling 1 and a lower portion 3b of the mounting frame 3 on a lower portion 3b side of the mounting frame 3. Is a structure of a ceiling inspection opening in which an inspection lid 4 that opens and closes is provided, and a heat-insulating inner lid 5 is arranged above the inspection lid 4, and the side surface 5 a of the heat-insulating inner lid 5 faces inward as it becomes lower. Inclined surface 7
The heat-insulating inner lid 5 is fitted into the upper portion 3a side of the mounting frame 3 so as to be able to be pushed upward, and the upper part of the heat-insulating inner lid 5 is connected to the upper end surface 3c of the mounting frame 3. The flange portion 8 to be stopped is projected, and the flange portion 8 is provided.
A packing material 9 for closing a gap with the mounting frame 3 is attached from the entire periphery of the lower surface 8a to the entire periphery of the upper portion 5b of the side surface 5a of the heat-insulating inner lid 5 from the lower surface 8a. With this configuration, when the heat-insulating inner lid 5 is fitted from above the mounting frame 3, the inclined surface 7 of the side surface 5 a of the heat-insulating inner lid 5 is fitted.
As a result, the heat-insulating inner lid 5 is not caught by the mounting frame 3 and the packing material 9 is formed by the flange portion 8 of the heat-insulating inner lid 5.
Is attached to the upper side surface from the lower surface 8a, the packing material 9 contacts the mounting frame 3 only at the end of the fitting of the heat-insulating inner lid 5, and the packing material 9 between the mounting frame 3 and the heat-insulating inner lid 5 is provided. This ensures that the seal can be made. In addition, since the packing material 9 seals the gap between the inner peripheral surface 3d of the mounting frame 3 and the side surface 5a of the heat-insulating inner lid 5, not only the gap between the heat-insulating inner lid 5 and the mounting frame 3 in the vertical direction A but also Also, the gap in the lateral direction B can be completely eliminated, and even if vibration is applied, the heat-insulating inner lid 5 can be prevented from floating due to the compression of the packing material 9.

An elastic packing material 10 for closing a gap between the heat insulating inner lid 5 and the side surface 5a is attached to an inner peripheral surface 3d substantially at the center of the mounting frame 3 in the vertical direction A. Preferably, with such a configuration, the heat-insulating inner lid 5 is attached to the mounting frame 3.
When fitted from above, the heat-insulating inner lid 5 does not come into contact with the elastic packing material 10, and the elastic packing material 10 attached to the mounting frame 3 is attached to the heat-insulating inner lid 5 only at the end of the fitting of the heat-insulating inner lid 5. The elastic packing material 10 is attached to the mounting frame 3 side because of the contact, so that the work of fitting the heat insulating middle lid 5 is facilitated, and at the same time, the mounting frame 3 and the heat insulating middle lid 5 are connected by the elastic packing material 10. Airtightness is sufficiently obtained, and by the elastic packing material 10,
The airtightness of the heat-insulating inner lid 5 in the lateral direction B can be further improved.

It is preferable to set the protrusion dimension D of the flange portion 8 of the heat-insulating inner lid 5 to a value as large as possible so that the heat-insulating inner lid 5 can be inserted and removed from below the mounting frame 3 by inclining the heat-insulating inner lid 5. Flange 8 and upper end surface 3 of mounting frame 3
c, the airtightness between the heat-insulating inner lid 5
Can prevent the flange portion 8 from being caught on the mounting frame 3, so that the heat-insulating inner lid 5 can be removed from the indoor side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. In FIG. 4, an opening 2 is provided in a ceiling 1 having heat insulation, and a mounting frame 3 is attached to the opening 2. The mounting frame 3 is made of wooden or synthetic resin,
It may be made of metal. An outer frame 1 is provided on the inner periphery of the lower end of the mounting frame 3.
The ceiling inspection port 6 is provided inside the outer frame 12.
An inspection lid 4 for opening and closing the door is mounted. In the present embodiment, the outer frame 12 and the mounting frame 3 are fixed to the base material 14 by nails 13. One end of the inspection cover 4 is rotatably connected to one end of the outer frame 12 via a hinge (not shown), and the other end of the inspection cover 4 is provided via a lock mechanism (not shown). And is detachably attached to the other end of the outer frame 12. In addition, although the inspection lid 4 is arranged substantially flush with the ceiling surface 1a, the inspection lid 4 may, of course, protrude below the ceiling surface 1a or may be arranged so as to be recessed above the ceiling surface 1a.

Above the inspection lid 4, a thermal insulation lid 5 is arranged. The heat-insulating inner lid 5 is fitted so as to be able to be pushed up above the mounting frame 3 and its material is not particularly limited. For example, a composite material of polystyrene and polyethylene, or a foamed resin molded product such as foamed polystyrene or foamed urethane Can be used. Side surface 5a of heat-insulating inner lid 5
Is formed with an inclined surface 7 inclined inward toward the lower side, and the entire heat insulating inner lid 5 has an inverted trapezoidal shape when viewed from the side.

On the upper part of the heat-insulating inner lid 5, a flange 8 is projected from the upper end surface 3 c of the mounting frame 3. The projecting dimension D (FIG. 1) of the flange portion 8 is the thickness d of the mounting frame 3.
Approximately the same dimensions. Here, as shown in FIG. 4A, the width L of the entire heat-insulating inner lid 5 including the flange portion 8 is set so that the heat-insulating inner lid 5 can be removed from below the mounting frame 3 by tilting. I have.

The heat-insulating inner lid 5 has a lower surface 8a of the flange portion 8.
A packing material 9 having an inverted L-shaped cross section is attached from the entire circumference to the entire circumference of the upper part 5b of the side surface 5a of the heat-insulating inner lid 5. As shown in FIG. 2A, the packing material 9 includes a horizontal piece 9a for sealing between the entire periphery of the lower surface 8a of the flange portion 8 and the upper end surface 3c of the mounting frame 3, and a side surface of the heat-insulating inner lid 5. 5a
A vertical piece 9b for sealing between the entire periphery of the upper part 5b of the mounting frame 3 and the inner peripheral surface 3d of the upper part 3a of the mounting frame 3 is integrally formed. The vertical piece 9b has a vertical width F of about 30 mm (FIG. 1).
And is formed so as to be gradually thicker as it goes down along the inclined surface 7 of the heat-insulating inner lid 5, so that between the vertical piece 9 b and the mounting frame 3, And the airtightness between the vertical piece 9b and the inclined surface 7 of the heat-insulating inner lid 5 is secured, respectively.

On the other hand, an elastic packing material 10 for closing the gap between the inner peripheral surface 3d of the mounting frame 3 and the side surface 5a of the heat-insulating inner lid 5 over the entire periphery thereof in the vertical direction A.
Is attached. This elastic packing material 10 is shown in FIG.
As shown in (b), a fixing piece 10a fixed to the mounting frame 3 by a fixing tool 15 such as a screw, and an elastic tongue curved in a substantially arc shape so as to cover the front of the fixing piece 10a from the upper end of the fixing piece 10a. It is integrally formed with the piece 10b in a downward substantially C-shape. Also, with the heat-insulating inner lid 5 fitted in the mounting frame 3,
The elastic tongue 10b has a protruding width E (FIG. 1) so that the elastic tongue 10b can be in close contact with the lower portion 5c of the side surface 5a of the heat-insulating inner lid 5.

However, as described above, the side surface 5a of the heat-insulating inner lid 5 has the inclined surface 7 which is inclined inward toward the lower side, so that the heat-insulating inner lid 5 is fitted from above the mounting frame 3. To
The lower end of the heat-insulating inner lid 5 does not catch on the mounting frame 3. Moreover, the packing material 9 is provided on the flange portion 8 of the heat-insulating inner lid 5.
The lower surface 8a of the mounting frame 3 is attached to the entire periphery of the upper portion 5b of the side surface 5a. On the other hand, the elastic packing material 10 is attached to the substantially central portion of the inner peripheral surface 3d of the mounting frame 3 in the vertical direction. At the start of the insertion of the heat-insulating inner lid 5, the packing material 9 is attached to the mounting frame 3.
, And the elastic packing material 10 does not contact the heat-insulating middle lid 5, so that the work of fitting the heat-insulating middle lid 5 can be performed smoothly. Only after the end of the fitting of the heat-insulating inner lid 5, the packing material 9 attached to the heat-insulating inner lid 5 can contact the upper portion 3a of the mounting frame 3 as shown in FIG. Since the packing material 10 can contact the lower part 5c of the side surface 5a of the heat insulating middle lid 5, the space between the mounting frame 3 and the heat insulating middle lid 5 is reliably sealed by the packing material 9 and the elastic packing material 10, and the inclined surface 7 is formed. Thereby, the vertical piece 9 of the packing material 9 and the elastic tongue piece 10c of the elastic packing material 10 are respectively compressed. Therefore, not only the gap in the vertical direction A but also the gap in the horizontal direction B between the heat-insulating inner lid 5 and the mounting frame 3 can be completely eliminated, so that the heat-insulating inner lid 5 can be smoothly fitted. However, sufficient airtightness between the mounting frame 3 and the heat insulating inner lid 5 can be obtained, and the construction performance can be greatly improved.

In this embodiment, since the vertical piece 9b of the packing material 9 is formed along the inclined side surface of the heat-insulating inner lid 5, the vertical piece 9b of the packing material 9 is located between the upper portion 3a of the mounting frame 3 and the heat-insulating inner lid 5. On the other hand, the elastic packing material 10 has a substantially C-shaped downward shape, and a substantially arc-shaped elastic tongue 10b covers the front of the fixed piece 10a. As a result, the head of the fixing device 15 such as a screw is not exposed on the surface and does not get caught on the lid 5 during heat insulation, and the elastic tongue 10b is extended downward from the upper end of the fixing piece 10a. The direction in which the heat-insulating inner lid 5 is fitted from above the mounting frame 3 coincides with the direction in which the elastic tongues 10b extend, so that the elastic tongues 10b do not turn up even when they come into contact with the heat-insulating inner lid 5, If the heat-insulating inner lid 5 can be smoothly fitted from above the mounting frame 3 Sometimes, it is possible to close the gap between the substantially center portion and the heat insulation of the lid 5 of the mounting frame 3 securely by the elastic force of the elastic tongue piece 10b.

Therefore, even when vibration such as an earthquake is applied, the heat insulating inner lid 5 can be prevented from floating due to the compression of the packing material 9 and the elastic packing material 10, and airtightness is impaired even when vibration occurs. Nothing. Also,
Since the packing material 9 is attached to the heat-insulating inner lid 5 side and the elastic packing material 10 is attached to the mounting frame 3 side, the existing mounting frame 3 and heat-insulating inner lid 5 can be used as they are, and airtightness and The ceiling inspection port 6 having excellent heat insulation can be provided at a low cost.

Since the heat-insulating inner lid 5 can be pushed up above the mounting frame 3, the heat-insulating inner lid 5 can be moved from behind the ceiling.
The work efficiency can be further improved if it can be removed from the indoor side. Incidentally, in the conventional heat-insulating inner lid 5 '(FIG. 5), since the protrusion dimension D' of the flange portion 7 is formed larger than the plate thickness d of the mounting frame 3, it is assumed that the heat-insulating inner lid 5 ' ′ From below the mounting frame 3, there is a problem that the flange portion 7 is caught and cannot be removed. On the other hand, in the present embodiment, since the protrusion dimension D of the flange portion 8 of the heat-insulating inner lid 5 is set to be substantially equal to the plate thickness d of the mounting frame 3, the airtightness between the flange portion 8 and the mounting frame 3 is provided. As shown in FIG.
By tilting the mounting frame 3, the flange portion 8 can be prevented from being hooked on the mounting frame 3, so that the flange portion 8 can be removed from below the mounting frame 3. Therefore, the removal of the heat-insulating inner lid 5 can be performed from the indoor side, and the work of removing the heat-insulating inner lid 5 can be performed easily.

[0018]

As described above, according to the first aspect of the present invention, the inspection cover for attaching the mounting frame to the opening provided in the ceiling and opening and closing the lower portion of the mounting frame on the lower side of the mounting frame. The ceiling inspection port structure in which the thermal insulation lid is arranged above the inspection lid, the side surface of the thermal insulation lid is configured with a slope inclined inward toward the lower side, The heat-insulating inner lid is fitted so as to be able to be lifted upward on the upper side of the mounting frame, and a flange portion which is locked to an upper end surface of the mounting frame is protruded at the upper part of the heat-insulating inner lid, Since the packing material for closing the gap between the mounting frame and the mounting frame is attached from the entire circumference of the lower surface of the flange portion to the entire circumference of the upper side of the side surface of the heat-insulating inner lid, the heat-insulating inner lid is mounted from above the mounting frame. When fitted, the insulated middle lid is caught by the mounting frame due to the slope of the side of the insulated middle lid In addition, since the packing material is attached from the lower surface of the flange portion of the heat-insulating inner lid to the upper side surface, the packing material comes into contact with the mounting frame only at the end of the fitting of the heat-insulating inner lid, and the mounting frame is insulated from the mounting frame. The space between the inner lid and the inner lid can be reliably sealed by the packing material. Therefore, the work of inserting the heat-insulating inner lid is easy, and at the same time, the airtightness between the mounting frame and the heat-insulating inner lid is sufficiently obtained, so that the construction performance can be significantly improved. In addition, the packing material seals the gap between the inner peripheral surface of the mounting frame and the side surface of the heat-insulating inner lid, so that not only the vertical gap between the heat-insulating inner lid and the mounting frame, but also the horizontal gap is complete. Even if vibration is applied, it is possible to prevent the insulation cover from floating due to the compression of the packing material, and it is a simple structure that attaches the packing material to the insulation cover, The existing mounting frame and the thermal insulation lid can be used as they are, and a ceiling inspection port excellent in airtightness and thermal insulation can be provided at low cost.

According to a second aspect of the present invention, in addition to the effect of the first aspect, an inner peripheral surface at a substantially central portion in a vertical direction of the mounting frame has an elasticity for closing a gap with a side surface of the heat insulating inner lid. Since the packing material is attached, when the heat-insulating inner lid is fitted from above the mounting frame, the heat-insulating inner lid does not come into contact with the elastic packing material, and is attached to the mounting frame only after the heat-insulating inner lid has been fitted. Since the attached elastic packing material comes into contact with the heat-insulating inner lid, it has a simple structure of attaching the elastic packing material to the mounting frame side, but at the same time, it facilitates the work of fitting the heat-insulating inner lid, and at the same time, the elastic packing material The airtightness between the heat-insulating inner lid and the heat-insulating inner lid can be sufficiently obtained, and the lateral airtightness of the heat-insulating inner lid can be further improved by the elastic packing material.

According to a third aspect of the present invention, in addition to the effect of the first aspect, the protrusion dimension of the flange portion of the heat insulating inner lid is set to
By tilting the heat-insulating inner lid to the maximum that can be inserted and removed from below the mounting frame, not only the airtightness between the flange and the upper end surface of the mounting frame is improved, but also by tilting the heat-insulating inner lid, the flange Can be prevented from being caught on the mounting frame, the heat-insulating inner lid can be removed from the indoor side, and the work of removing the heat-insulating inner lid can be performed easily.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of an embodiment of the present invention.

2A is an enlarged cross-sectional view of a portion A in FIG. 1, and FIG. 2B is an enlarged cross-sectional view of a portion B in FIG.

FIG. 3 is a cross-sectional view showing the entire ceiling inspection port of the same.

FIG. 4A is an explanatory view when a heat-insulating inner lid is removed from below a mounting frame, and FIG. 4B is a perspective view of the mounting frame.

FIG. 5 is a cross-sectional view showing the entire conventional ceiling inspection port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling 2 Opening part 3 Mounting frame 3a Upper part 3b Lower part 3c Upper end surface 3d Inner peripheral surface 4 Inspection lid 5 Insulated middle lid 5a Side surface 5b Upper part 6 Ceiling inspection opening 7 Inclined surface 8 Flange part 9 Packing material 10 Elastic packing material A Vertical direction B Lateral direction D Projection dimension of flange

Claims (3)

[Claims] 1. A mounting frame is attached to an opening provided in a ceiling,
An inspection lid is provided on the lower side of the mounting frame to open and close the lower part of the mounting frame, and the structure of the ceiling inspection opening is such that the thermal insulation lid is arranged above the inspection lid. The heat-insulating inner lid is fitted to the upper side of the mounting frame so as to be able to be pushed up upward, and the upper part of the heat-insulating inner lid is mounted on the mounting frame. A flange portion is projected from the end surface, and a packing material for closing the gap between the mounting frame and the entire circumference of the lower surface of the flange portion to the entire upper portion of the side surface of the heat insulating inner lid is provided. The structure of the ceiling inspection door, which is worn. 2. An elastic packing material for closing a gap with a side surface of the heat-insulating inner lid is attached to an inner peripheral surface at a substantially central portion in a vertical direction of the mounting frame. Ceiling inspection door structure. 3. The structure of the ceiling inspection opening according to claim 1, wherein the protrusion of the flange portion of the heat-insulating inner lid is set to be large to the extent that the heat-insulating inner lid is tilted and can be taken in and out from below the mounting frame.