JP3377422B2 - Structure of ceiling inspection door - Google Patents

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 the space above the ceiling.

[0002]

2. Description of the Related Art In the structure of a house, a ceiling inspection port is generally provided in a ceiling part above a living space or a closet space, for example. This ceiling inspection port is used as a doorway when performing inspection work behind the ceiling, and is closed by an inspection lid when not in use, but when the airtightness of the entire house is not secured, the ceiling inspection port The outside air enters the room through the gap between the inspection lid and the inspection lid, which gives an uncomfortable feeling to the person in the room. In addition, if it is attempted to completely eliminate the gap between the ceiling inspection port and the inspection cover, there is a problem that the cost is high and it is difficult to attach and detach the inspection cover.

As a solution to this problem, for example, the actual Kaihei 5-5
In Japanese Patent No. 4739, as shown in FIG. 5, a heat insulating inner lid 5 ′ is arranged above the 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. The one mounted on the upper end surface of the frame 3 is known.

[0004]

However, in the conventional structure of the ceiling inspection port, the flange portion 8 of the heat insulating inner lid 5'is provided.
Since the sealing material 20 is provided between the heat insulating inner lid 5'and the mounting frame 3 only by providing the sealing material 20 between the heat insulating inner lid 5'and the upper end surface of the mounting frame 3. Since the airtightness is not obtained and a 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 lowered but also the heat insulating inner lid 5'is formed. There is a problem that rattling easily occurs and, for example, when vibration is applied, the heat insulating inner lid 5'is left floating, further impairing the airtightness. Further, in the past, in order to improve airtightness,
For example, if it is attempted to eliminate the gap S between the side surface of the heat insulating inner lid 5 ′ and the inner peripheral surface of the mounting frame 3, when the heat insulating inner lid 5 ′ is fitted from above the mounting frame 3, the heat insulating inner lid 5 ′ is inserted. Since the lower part of ′ is caught on the mounting frame 3 and the fitting work becomes difficult, it is not possible to achieve both easy fitting of the heat insulating inner lid 5 ′ and improvement of airtightness and heat insulating property.

The present invention has been made in view of the above-mentioned conventional example, and has a structure in which the heat insulating inner lid is easily fitted from the upper side of the mounting frame, while sufficiently enhancing the airtightness between the mounting frame and the heat insulating inner lid. It is an object of the present invention to provide a low-priced ceiling inspection port structure that can be used, and also to provide a ceiling inspection port structure in which the heat insulating inner lid can be removed from below the mounting frame.

[0006]

In order to solve the above problems, according to the present invention, a mounting frame 3 is attached to an opening 2 provided in a ceiling 1, and a lower portion 3b of the mounting frame 3 is attached to a lower portion 3b side of the mounting frame 3. The inspection lid 4 for opening and closing is provided, and the insulating inner lid 5 is arranged above the inspection lid 4. The side wall 5a of the insulating inner lid 5 is directed toward the inner side toward the lower side. Inclined slope 7
The heat insulating inner lid 5 is fitted to the upper portion 3a side of the mounting frame 3 so as to be able to be pushed upward, and the upper portion of the heat insulating inner lid 5 is engaged with the upper end surface 3c of the mounting frame 3. The flange portion 8 to be stopped is provided so as to project, and the flange portion 8
It is characterized in that a packing material 9 for closing the gap with the mounting frame 3 is attached from the entire circumference of the lower surface 8a to the entire circumference of the upper portion 5b of the side surface 5a of the heat insulating inner lid 5, With this configuration, when the heat insulating inner lid 5 is fitted from the upper side of the mounting frame 3, the inclined surface 7 of the side surface 5 a of the heat insulating inner lid 5 is inserted.
As a result, the heat insulating inner lid 5 does not get caught on the mounting frame 3, and the packing material 9 has the flange portion 8 of the heat insulating inner lid 5.
Since it is attached from the lower surface 8a to the upper side surface, the packing material 9 comes into contact with the mounting frame 3 and the packing material 9 between the mounting frame 3 and the thermal insulation middle lid 5 is not completed until the end of fitting of the thermal insulation middle lid 5. This will ensure the seal. Further, since the packing material 9 seals 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 in the vertical direction A between the heat insulating inner lid 5 and the mounting frame 3 but also Also, the gap in the lateral direction B can be completely eliminated, and even if vibration is applied, it is possible to prevent the heat insulating inner lid 5 from floating due to the compression of the packing material 9.

An elastic packing material 10 is attached to an inner peripheral surface 3d at a substantially central portion in the vertical direction A of the mounting frame 3 to close a gap between the side wall 5a of the heat insulating inner lid 5. Preferably, with this 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 when the fitting of the heat insulating inner lid 5 is completed. Since they are in contact with each other, the elastic packing material 10 is attached to the side of the mounting frame 3 so that the fitting work of the heat insulating inner lid 5 is facilitated, and at the same time, the elastic packing material 10 allows the mounting frame 3 and the heat insulating inner lid 5 to be attached. The airtightness between the two is sufficiently obtained, and the elastic packing material 10
The airtightness of the heat insulating middle lid 5 in the lateral direction B can be further enhanced.

It is preferable that the protruding dimension D of the flange portion 8 of the heat insulating inner lid 5 is set to a large value up to a limit at which the heat insulating inner lid 5 can be tilted and put in and out from below the mounting frame 3. With such a configuration, The flange portion 8 and the upper end surface 3 of the mounting frame 3
Not only the airtightness with the c is improved, but also the heat insulation inner lid 5
It is possible to prevent the flange portion 8 from being caught by the mounting frame 3 by tilting, so that the heat insulating inner lid 5 can be removed from the indoor side.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of the present invention will be described below. In FIG. 4, an opening 2 is provided in a ceiling 1 having a heat insulating property, and a mounting frame 3 is attached to the opening 2. The mounting frame 3 is made of wood or synthetic resin,
It may be made of metal. The outer frame 1 is attached to the inner circumference of the lower end of the mounting frame 3.
2 is installed, and the ceiling inspection port 6 is provided inside the outer frame 12.
An inspection lid 4 for opening and closing is attached. In this embodiment, the outer frame 12 and the mounting frame 3 are fixed to the base material 14 by the nails 13. One end of the inspection lid 4 is rotatably connected to one end of the outer frame 12 via a hinge (not shown), and the other end of the inspection lid 4 is connected via a lock mechanism (not shown). And is detachably attached to the other end of the outer frame 12. The inspection lid 4 is arranged substantially flush with the ceiling surface 1a, but of course, the inspection lid 4 may be projected below the ceiling surface 1a or may be recessed above the ceiling surface 1a.

A heat insulating middle lid 5 is arranged above the inspection lid 4. The heat insulating inner lid 5 is pushed up above the mounting frame 3 and can be freely pushed up, and the material thereof is not particularly limited. For example, a composite material of polystyrene and polyethylene, or a foamed resin molded product such as polystyrene foam or urethane foam. Can be used. Side 5a of heat insulating inner lid 5
Is composed of an inclined surface 7 which is inclined toward the inner side toward the lower side, and the entire heat insulating middle lid 5 has an inverted trapezoidal shape when viewed from the side.

On the upper portion of the heat insulating inner lid 5, a flange portion 8 which is engaged with the upper end surface 3c of the mounting frame 3 is provided in a protruding manner. The protrusion dimension D (FIG. 1) of the flange portion 8 is the plate thickness d of the mounting frame 3.
It has almost the same dimensions as. Here, as shown in FIG. 4A, the lateral 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 tilted and removed from the lower side of the mounting frame 3. There is.

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 portion 5b of the side surface 5a of the heat insulating inner lid 5. As shown in FIG. 2 (a), the packing material 9 includes a horizontal piece 9 a for sealing between the entire circumference of the lower surface 8 a of the flange portion 8 and the upper end surface 3 c 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 circumference of the upper part 5b of the above 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 become gradually thicker toward the lower side along the inclined surface 7 of the heat insulating inner lid 5, and thereby, between the vertical piece 9b and the mounting frame 3, The airtightness between the vertical piece 9b and the inclined surface 7 of the heat insulating inner lid 5 is ensured, respectively.

On the other hand, an elastic packing material 10 for closing a gap between the inner peripheral surface 3d of the mounting frame 3 and the side surface 5a of the heat insulating inner lid 5 is provided at a substantially central portion in the vertical direction A.
Has been attached. This elastic packing material 10 is shown in FIG.
As shown in (b), a fixing piece 10a fixed to the mounting frame 3 with a fixing member 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 C-shape. Also, with the heat insulating inner lid 5 fitted in the mounting frame 3,
The elastic tongue 10b has a protrusion width E (FIG. 1) so that it can be brought into 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 is the inclined surface 7 which is inclined inward toward the lower side, so that when the heat insulating inner lid 5 is fitted from above the mounting frame 3. To
The lower end of the heat insulating middle lid 5 does not get caught in the mounting frame 3. Moreover, the packing material 9 is the flange portion 8 of the heat insulating inner lid 5.
Is attached from the lower surface 8a to the entire upper portion 5b of the side surface 5a. On the other hand, the elastic packing material 10 is attached to the inner peripheral surface 3d of the mounting frame 3 at a substantially central portion in the vertical direction. At the start of fitting the heat insulation inner lid 5, the packing material 9 is attached to the mounting frame 3.
Since the elastic packing material 10 does not come into contact with the heat insulating inner lid 5, the work of fitting the heat insulating inner lid 5 can be performed smoothly. The packing material 9 attached to the heat insulating inner lid 5 can come into contact with the upper portion 3a of the mounting frame 3 as shown in FIG. Since the packing material 10 can contact the lower portion 5c of the side surface 5a of the heat insulating inner lid 5, the space between the mounting frame 3 and the heat insulating inner lid 5 is reliably sealed by the packing material 9 and the elastic packing material 10, and the inclined surface 7 is formed. As a result, 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 lateral direction B between the heat insulating inner lid 5 and the mounting frame 3 can be completely eliminated, and as a result, the heat insulating inner lid 5 can be fitted smoothly. However, the airtightness between the mounting frame 3 and the heat insulating inner lid 5 is sufficiently obtained, and the construction performance can be significantly improved.

Further, in this embodiment, since the vertical piece 9b of the packing material 9 has a shape along the inclined side surface of the heat insulating inner lid 5, a space between the upper portion 3a of the mounting frame 3 and the heat insulating inner lid 5 is formed. The airtightness of the elastic packing material 10 is further improved. On the other hand, the elastic packing material 10 has a substantially downward C-shape, and a substantially arcuate elastic tongue piece 10b covers the front of the fixed piece 10a. Since the head of the fixing tool 15 such as a screw is not exposed on the surface and caught on the heat insulating middle lid 5, the elastic tongue piece 10b is continuously 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 and the direction in which the elastic tongue piece 10b extends are the same, and even when the heat insulating inner lid 5 comes into contact, the elastic tongue piece 10b does not turn up, If the heat insulating inner lid 5 can be fitted smoothly 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, it is possible to prevent the insulating inner lid 5 from floating due to the compression of the packing material 9 and the elastic packing material 10, and the airtightness is impaired even when vibration occurs. Never. 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 the 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.

By the way, since the heat insulating inner lid 5 can be pushed up above the mounting frame 3, the heat insulating inner lid 5 can be pushed from the back of the ceiling.
Although it can be removed, the work efficiency can be further improved if it can be removed from the indoor side. By the way, in the conventional heat insulating inner lid 5 '(FIG. 5), since the projecting dimension D'of the flange portion 7 is formed larger than the plate thickness d of the mounting frame 3, the heat insulating inner lid 5' Even if ′ ′ is to be removed 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 flange portion 8 and the mounting frame 3 are hermetically sealed. At the same time, the heat insulation inner lid 5 as shown in FIG.
It is possible to prevent the flange portion 8 from being caught by the mounting frame 3 by inclining, so that it can be removed from below the mounting frame 3. Therefore, the heat insulating inner lid 5 can be removed from the indoor side, and the work of removing the heat insulating inner lid 5 can be easily performed.

[0018]

As described above, the invention according to claim 1 of the present invention is the inspection lid for attaching the mounting frame to the opening provided in the ceiling and opening and closing the lower part of the mounting frame on the lower side of the mounting frame. And a structure of the ceiling inspection port in which the heat insulating inner lid is arranged above the inspection lid, and the side surface of the heat insulating inner lid is composed of an inclined surface inclined toward the inner side toward the lower side, The heat insulating inner lid is fitted on the upper side of the mounting frame so that it can be pushed upward, and at the upper part of the heat insulating inner lid, a flange portion that is locked to the upper end surface of the mounting frame is provided so as to project. Since the packing material for closing the gap with the mounting frame is attached from the entire circumference of the lower surface of the flange portion to the entire upper circumference of the side surface of the heat insulating inner lid, the heat insulating inner lid is attached from the upper side of the mounting frame. When fitting, the heat insulating inner lid is caught on the mounting frame by the inclined surface of the side surface of the heat insulating inner lid. Moreover, since the packing material is attached to the upper side surface from the bottom surface of the flange part of the heat insulating inner lid, the packing material does not come into contact with the mounting frame until the mounting material comes into contact with the mounting frame at the end of the fitting of the heat insulating inner lid. The packing material will ensure a reliable seal between the inner lid. Therefore, the work of fitting 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, and the construction performance can be greatly improved. Moreover, since the packing material seals between the inner peripheral surface of the mounting frame and the side surface of the heat insulating inner lid, not only the vertical gap between the heat insulating inner lid and the mounting frame but also the horizontal gap is completely eliminated. It is possible to eliminate it, and even if vibration is applied, it is possible to prevent the heat insulating inner lid from floating due to compression of the packing material, and it is a simple structure to attach the packing material to the heat insulating inner lid side. The existing mounting frame and the heat insulating inner lid can be used as they are, and the ceiling inspection port excellent in airtightness and heat insulating property can be provided at low cost.

Further, in addition to the effect of claim 1, the invention of claim 2 has an elasticity for closing a gap between the side surface of the heat insulating inner lid and an inner peripheral surface of a substantially central portion of the mounting frame in the vertical direction. Since the packing material is attached, when fitting the heat insulating inner lid from above the mounting frame, the heat insulating inner lid does not come into contact with the elastic packing material and is not attached to the mounting frame until the end of fitting of the heat insulating inner lid. Since the attached elastic packing material comes into contact with the heat insulating inner lid, it has a simple structure that the elastic packing material is attached 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 attaches to the mounting frame. Airtightness between the heat insulating inner lid and the heat insulating inner lid can be sufficiently obtained, and the airtightness of the heat insulating inner lid in the lateral direction can be further enhanced by the elastic packing material.

According to the invention of claim 3, in addition to the effect of claim 1, the protrusion size of the flange portion of the heat insulating inner lid is
Since the heat insulating inner lid is tilted and set to be large enough to be taken in and out from below the mounting frame, not only can the airtightness between the flange portion and the upper end surface of the mounting frame be enhanced, but the flange portion can also be tilted by tilting the heat insulating inner lid. Since it 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 drawings]

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

2 (a) is an enlarged cross-sectional view of the portion a in FIG. 1, and FIG. 2 (b) is an enlarged cross-sectional view of the portion b in FIG.

FIG. 3 is a sectional view showing the entire ceiling inspection port of the above.

FIG. 4 (a) is an explanatory view when the heat insulating inner lid is removed from below the mounting frame, and FIG. 4 (b) is a perspective view of the mounting frame.

FIG. 5 is a sectional view showing an entire conventional ceiling inspection port.

[Explanation of symbols]

1 ceiling 2 openings 3 mounting frame 3a upper part 3b lower part 3c Top surface 3d inner surface 4 Inspection lid 5 Thermal insulation inner lid 5a side 5b upper part 6 Ceiling inspection port 7 slope 8 Flange 9 packing material 10 Elastic packing material A vertical direction B horizontal direction D Flange projection size

Claims (3)

(57) [Claims] 1. A mounting frame is attached to an opening provided in a ceiling,
The structure of the ceiling inspection port is that the inspection lid that opens and closes the lower part of the mounting frame is provided on the lower side of the mounting frame, and the heat insulation inner lid is arranged above the inspection lid, and the side surface of the heat insulation inner lid is the lower side. It is composed of an inclined surface that inclines toward the inside, and the heat insulating inner lid is fitted to the upper side of the mounting frame so that it can be pushed up upward, and the upper part of the heat insulating inner lid is above the mounting frame. The flange part that is locked to the end face is projected, and the packing material for closing the gap with the mounting frame is installed from the entire circumference of the lower surface of the flange part to the entire upper part of the side surface of the heat insulating inner lid. The structure of the ceiling inspection door, which is characterized by being worn. 2. The elastic packing material for closing the gap between the side wall of the heat insulating inner lid is attached to the inner peripheral surface of the mounting frame at a substantially central portion in the vertical direction. The structure of the ceiling inspection door. 3. The structure of the ceiling inspection port according to claim 1, wherein the projecting dimension of the flange portion of the heat insulating inner lid is set to be large up to a limit at which the heat insulating inner lid can be tilted and pulled out from below the mounting frame.