JP7015182B2 - Ceiling access door - Google Patents

Description

The present invention relates to a ceiling inspection port, and more specifically, is formed from a rectangular outer frame attached to an opening formed in the ceiling and a rectangular inner frame provided in the outer frame so as to be openable and closable. It is about the ceiling inspection door.

As a conventional ceiling inspection port, a substantially L-shaped presser member for holding the upper surface of the lid finishing material is provided on the inner surface of the inner frame in which the plate-shaped inner frame member is framed in a square shape, and the vertical portion of the presser member is provided. A bendable cut piece is provided inside the inner frame, and the cut piece is bent with the lid base material placed on the horizontal part of the holding member to form the lower edge of the cut piece. A structure is known in which a lid base material is sandwiched and fixed with a horizontal piece of a pressing member (see, for example, Patent Document 1).

In the ceiling inspection port described in Patent Document 1, the cut-up piece is in a slightly bent state in advance in order to facilitate the cut-up. Further, since the cut-up piece is bent in advance, the size of the lid base material is set small in order to avoid interference (catch) with the cut-up piece.

According to the ceiling inspection port described in Patent Document 1, the cut-up piece can be bent by hand with the lid base material inserted in the inner frame placed on the horizontal portion of the holding member. , It can be easily installed without using tools such as electric drills and electric drivers.

The ceiling inspection port described in Patent Document 1 is a two-sheet pasting type in which the upper surface of the lid finishing material is joined to the lower surface of the lid base material fixed to the holding member, and the lid finishing material is attached to the lower surface of the horizontal portion of the holding member. Two types of structures are adopted, which are single-paste type with only fixed.
The lid base material and the lid finishing material are made of a material having fire resistance, for example, gypsum board, and two types of thin plate thickness (quasi-incombustible) and thick plate thickness (non-combustible) are used according to the standard. There is.

JP 2009-91864

In the ceiling inspection port described in Patent Document 1 configured as described above, the lid base material is used to avoid interference (catch) with a pre-bent raised piece when inserted into the inner frame. In addition, since it is set to be smaller than the dimension between the facing pieces, the lid base material may be misaligned or rattled, and may come off from the cut pieces.
Therefore, when fixing the lid base material to the inner frame, it is necessary to pay close attention to the insertion of the lid base material into the inner frame and the bending of the cut-up piece.

The present invention has been made in view of the above circumstances, and has an object of providing a ceiling inspection port that facilitates attachment of a lid base material to an inner frame and can be firmly fixed without misalignment or rattling. do.

In order to solve the above problems, the present invention comprises an inner frame that is openably and closably provided in an outer frame attached to the ceiling, and a plate-shaped inner frame material is framed in a rectangular shape, and the inner surface surface of the inner frame material is formed. The presser member is provided with a substantially L-shaped presser member, and the presser member is provided with a vertical portion attached to the inner side surface of the inner frame material and a lower surface of the lid base material inserted into the inner frame and a lid. It has a horizontal portion that also holds the upper surface of the finishing material, a cut-out piece that can be bent inward of the inner frame is provided in the vertical portion, and the lid base material is placed on the horizontal portion. It is a ceiling inspection port that enables the lid base material to be sandwiched between the cut piece and the horizontal portion by bending the cut piece in the raised state, and is the base end of the cut piece. A positioning piece that can come into contact with the side edge of the lid base material as the cut-up piece is bent is provided in the lower portion of the side (claim 1).

With this configuration, with the lid base material placed on the horizontal part of the presser member, the cut piece is manually bent inward of the inner frame to form the lower edge of the cut piece. Can abut on the upper surface of the lid base material, and the lid base material can be sandwiched between the cut-up piece and the horizontal piece of the pressing member. Further, as the cut-up piece is bent, the positioning piece is also bent inward to the inner frame and abuts on the side edge of the lid base material, so that the position shift and rattling of the lid base material can be suppressed. ..

In the present invention, it is preferable to form a reinforcing guide piece having a length substantially equal to the projecting width of the raised piece before bending at the upper end of the inner frame material (claim 2).

With this configuration, the strength of the inner frame material can be increased by the reinforcing guide piece, and when the lid base material is inserted into the inner frame from above the inner frame, the reinforcing guide piece serves as a guide. It is possible to prevent the lid base material from being cut up and caught on the piece.

Further, in the present invention, a vertical groove hole is formed at an appropriate position of the inner frame material, a screw hole is provided at a position corresponding to the vertical groove hole in the holding member, and the above is described from the outside of the inner frame material. It is preferable that the holding member is vertically adjustable with respect to the inner frame material by screw-coupling the screw member penetrating the flute hole to the screw hole (claim 3).

With this configuration, the position of the horizontal portion of the holding member that holds the lid finishing material can be adjusted according to the thickness of the lid finishing material.

Further, in the present invention, the lid finishing material is housed in the inner frame below the lid base material, and the upper surface of the lid finishing material is joined to the lower surface of the lid base material to form the lid finishing material. It is preferable that the lower surface is located substantially on the same surface as the lower end of the inner frame material (claim 4).

With this configuration, after the lid base material is sandwiched and fixed between the cut-out piece of the presser member and the horizontal portion, the lid finish material is joined to the lid base material and the lower surface of the horizontal portion to form the lid finish material. The lower surface can be positioned substantially on the same surface as the lower end of the inner frame material.

Further, in the present invention, the cut-and-raised pieces are provided at both ends of the holding member in the longitudinal direction, and at each end, the upper surface of the lid base material is provided so as to correspond to different thicknesses of the lid base material. It is preferable that two types having different heights in contact with the surface are formed (claim 5).

With this configuration, it is possible to fix the lid base material by bending one of the two types of cut-and-raised pieces having different heights corresponding to the thickness of the two types of lid base materials according to the standard. At this time, the lower edge of the cut piece is brought into contact with the upper surface of two places on one side of the lid base material, and the positioning piece is brought into contact with the two places of the side edge, so that the position of the cover base material is displaced or rattled. Can be prevented and can be firmly fixed.

Further, in the present invention, it is preferable that the lower end edge of the cut piece is formed with a downward gradient from the tip of the cut piece toward the base end (claim 6).

With this configuration, by changing the bending angle of the raised piece, it is possible to cope with an error in the thickness of the lid base material, and the lid base material can be firmly fixed.

In addition, in the present invention, it is preferable that the horizontal portion of the holding member is provided with a pilot hole to which the fixing screw member of the lid finishing material can be screw-coupled (claim 7).

With this configuration, when only the lid finishing material is held in the horizontal portion of the holding member, the screw member penetrating the lid finishing material can be screw-coupled to the prepared hole. In this case, since the lid finishing material is square, a through hole is provided in the lid finishing material through a pilot hole in a state where the lid finishing material is in contact with the horizontal portion of the holding member, and this through hole is used. The screw member can be screwed into the prepared hole. Instead of this, after marking is performed through the prepared hole with the lid finishing material in contact with the horizontal portion of the pressing member, the lid finishing material is turned upside down and the screw member is placed at the marked position. It can be penetrated and screwed into the pilot hole.

According to the present invention, since it is configured as described above, the following excellent effects can be obtained.

(1) According to the first aspect of the present invention, by bending the raised piece, the lid base material is sandwiched between the cut piece and the horizontal piece of the holding member, and the positioning piece is the lid base material. Since it abuts on the side edge, it is possible to easily attach the lid base material to the inner frame, and it is possible to firmly fix the lid base material without misalignment or rattling.

(2) According to the second aspect of the present invention, in addition to the above (1), the strength of the inner frame can be further improved and the attachment of the lid base material can be facilitated.

(3) According to the inventions according to claims 3 and 4, in addition to the above (1) and (2), it is possible to further facilitate the attachment of the lid finishing material and the lower surface (finishing) of the lid finishing material. The aesthetics of the surface) can be improved.

(4) According to the invention of claim 5, in addition to the above (1) to (3), the lid base material can be fixed corresponding to the lid base material having a different thickness, and the lid can be fixed. It can be firmly fixed by preventing misalignment and rattling of the base material.

(5) According to the invention of claim 6, by changing the bending angle of the raised piece, it is possible to cope with the error in the thickness of the lid base material, and thus the above (1) to (4). In addition, the lid base material can be further firmly fixed.

(6) According to the invention of claim 7, since the screw member penetrating the lid finishing material can be screw-bonded to the prepared hole formed in the horizontal portion of the pressing member, the lid finishing material can be attached. It can be facilitated, and it is possible to suppress misalignment and rattling of the lid finishing material. Further, since the presser member having a function of suppressing the displacement and rattling of the lid base material can also be used, the number of members can be reduced.

It is a top view of the inner frame which fixed the lid base material in this invention. Cross-sectional views (a) showing a state in which the lid base material and the lid finishing material in the present invention are fixed, the enlarged cross-sectional view (b) of the I portion of (a), and the lid base material and the lid finishing material having different thicknesses are fixed. It is an enlarged sectional view (c) which shows the state. It is a top view (a), the front view (b), and the side view (c) thereof which omitted a part of the presser member in this invention. It is a perspective view (a) which shows the state which the cut and raised piece of the holding member was bent up in advance, and is the perspective view (b) which shows the state which the cut and raised piece was bent. It is an exploded perspective view which shows the inner frame material, the presser member, the lid base material, and the lid finishing material in this invention. It is a perspective view which shows the state before attaching the lid base material. It is sectional drawing which shows the state before attaching the lid base material. It is an enlarged sectional view of the main part which shows the state before attaching the lid base material. It is a perspective view which shows the state which fixed the cover base material. It is a perspective view which shows the state before joining the lid finishing material. It is sectional drawing which shows the state before joining the lid finishing material. It is sectional drawing which shows the state before attaching the lid finishing material. It is sectional drawing which shows the state which attached the lid finishing material. FIG. 10 is an enlarged cross-sectional view (a) of part II of FIG. 10, and an enlarged cross-sectional view (b) showing a state in which a lid finishing material having a different thickness is attached.

Hereinafter, embodiments of the ceiling inspection port according to the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
As shown in FIG. 2, the ceiling inspection port 1 of the first embodiment is provided with a rectangular outer frame 10 mounted in the rectangular opening 2a formed in the ceiling 2 and a square outer frame 10 that can be opened and closed in the outer frame 10. A rectangular inner frame 20 to be formed, a lid base material 3 fixed by a pressing member 30 having a substantially L-shaped cross section provided in the inner frame 20, and a lid finishing material 4 joined to the lower surface of the lid base material 3. , Is provided.

The outer frame 10 is formed in a square shape by connecting the outer frame members 11 formed of four aluminum shaped members by angle-shaped corner members (not shown). The outer frame material 11 constituting the outer frame 10 is formed in a substantially crank-shaped cross section having an outward flange portion 12 that abuts on the ceiling finishing material 2b.

On the other hand, the inner frame 20 is formed by framed a plate-shaped inner frame member 21 formed of four aluminum shaped members in a square shape, and is connected by an angle-shaped corner member 22. In this case, the inner frame member 21 has the angle-shaped corner member 22 inserted in the insertion groove 23 formed between the lower end and the upper portion of the outer surface of the inner frame member 21.

Vertical groove holes 24 through which the fixing screws 40 of the pressing member 30 can penetrate are provided at two locations on both ends of the inner frame member 21 in the longitudinal direction.
Further, a reinforcing guide piece 25 extending inward from the upper end of the inner frame member 21 is formed at the upper end of the inner frame member 21. In this case, the reinforcing guide piece 25 has a length equal to or longer than the protrusion width P of the cut-up pieces 33a and 33b, which will be described later, before bending, which is provided on the holding member 30 (see FIG. 6B).
The reinforcing guide piece 25 can increase the strength of the plate-shaped inner frame material 21, and the reinforcing guide piece 25 guides the lid base material 3 when the lid base material 3 is inserted into the inner frame 20 from above the inner frame 20. Therefore, it is possible to prevent the lid base material 3 from being cut up and caught on the pieces 33a and 33b.

As shown in FIGS. 3 to 5, the pressing member 30 has a vertical portion 31 attached to the inner side surface of the inner frame material 21 and a lower surface of the lid base material 3 inserted into the inner frame 20. It is formed in a substantially L-shaped cross section having a horizontal portion 32 that also holds the upper surface of the lid finishing material 4.
Further, at both ends of the vertical portion 31 in the longitudinal direction, cut pieces 33a and 33b having different widths in the height direction are placed inward of the inner frame 20 so as to correspond to different thicknesses of the lid base material 3. It is provided so as to be foldable, and with the lid base material 3 placed on the horizontal portion 32, by bending either one of the raised pieces 33a and 33b, the bottom of the bent cut pieces 33a or 33b. The edge abuts on the upper surface of the lid base material 3, and the lid base material 3 can be sandwiched and fixed between the raised piece 33a or 33b and the horizontal portion 32.

In this case, the presser member 30 is formed by, for example, pressing a steel member, and the upper portion on the inner side of both ends of the vertical portion 31 is cut out to cut out one of the raised pieces 33a and 33b, for example, the height. A cut piece 33a having a narrow width in the vertical direction is provided so as to be bendable, and at the lower portion of the base end side of the cut piece 33a, it hits the side edge of the lid base material 3 as the cut piece 33a is bent. A contactable positioning piece 34a is provided. The lower end edge of the cut piece 33a is formed with a downward gradient from the tip end of the cut piece 33a toward the base end.

Further, the lower portion on the outer side of both ends of the vertical portion 31 is cut out, and the other of the raised pieces 33a and 33b, for example, the wide cut piece 33b in the height direction is provided so as to be bendable and raised. A positioning piece 34b that can come into contact with the side edge of the lid base material 3 as the cut-up piece 33b is bent is provided at the lower portion of the piece 33b on the base end side. The lower end edge of the cut piece 33b is formed with a downward gradient from the tip end of the cut piece 33b toward the base end.

It should be noted that V-shaped notches 35a and 35a are provided in the upper and lower portions of the vertical portion 31 on the base end side of the raised piece 33a, and a long hole 36a is provided between the two notches 35a and 35a. The cutouts 35a and 35a and the elongated holes 36a facilitate the bending of the cut piece 33a.
Further, V-shaped notches 35b and 35b are provided in the upper and lower portions on the base end side of the raised piece 33b of the vertical portion 31, and a long hole 36b is provided between the two notches 35b and 35b. The cutouts 35b and 35b and the elongated holes 36b facilitate the bending of the cut piece 33b.
The cut pieces 33a and 33b are in a state of being slightly bent inward in advance at the time of shipment from the factory, and further facilitate the bending of the cut pieces 33a and 33b.

Further, between the raised pieces 33a and 33b in the vertical portions 31 on both ends of the pressing member 30, a screw hole 37 having a threaded portion in a burring machined hole protruding inward is provided. A fixing screw 40 that runs through the vertical groove hole 24 provided in the inner frame member 21 from the outside is screwed to the screw hole 37. The presser member 30 and the vertical groove hole 24 provided in the inner frame member 21 may be screwed together by screwing a tapping screw (fixing screw 40) without providing a screw portion in the burring hole.
Further, pilot holes 38 having a small diameter are formed on both ends of the horizontal portion 32 in the longitudinal direction.
It is desirable that a slit 39 is provided between the vertical portion 31 and the horizontal portion 32 on the lower side of the raised piece 33a along the longitudinal direction of the pressing member 30. The slit 39 can facilitate the molding of the presser member 30.

Next, a procedure for attaching the lid base material 3 and the lid finishing material 4 into the inner frame 20 formed as described above will be described with reference to FIGS. 6 to 8A.
Before attaching the lid base material 3, the position of the horizontal portion 32 of the pressing member 30 is adjusted according to the thickness of the lid finishing material 4. Further, in order to facilitate bending, the cut pieces 33a and 33b are in a state of being slightly bent inward in advance at the time of shipment from the factory. In this state, the lid base material 3 is inserted into the inner frame 20 from above the inner frame 20 (see FIGS. 6, 6A and 6B). At this time, since the reinforcing guide piece 25 formed at the upper end of the inner frame material 21 has a length substantially equal to the protruding width P of the cut pieces 33a and 33b before bending, the lid base material 3 is cut and raised. It can be placed on the horizontal portion 32 of the pressing member 30 without interfering with (being caught by) the pieces 33a and 33b.

With the lid base material 3 placed on the horizontal portion 32, the cut-up piece 33b corresponding to the thickness of the lid base material 3 is bent, and the lower edge of the cut-up piece 33b is the upper surface of the peripheral edge of the lid base material 3. The positioning piece 34b is also bent along with the bending of the raised piece 33b so that it can come into contact with the side edge of the lid base material 3 (see FIG. 8A).
At this time, since the lower end edge of the cut-up piece 33b is formed with a downward slope from the tip end of the cut-up piece 33b toward the base end, even if there is a dimensional error in the thickness of the lid base material 3, By changing the bending angle of the cut piece 33b, the lower end edge of the cut piece 33b can be surely brought into contact with the upper surface of the peripheral edge of the lid base material 3.
Further, since the positioning piece 34b is in a state where it can abut on the side edge of the lid base material 3, that is, the positioning piece 34b is in contact with or close to the side edges of the four sides of the lid base material 3, the lid base material. It is possible to suppress the misalignment and rattling of 3.

Next, when the lid base material 3 is attached, after the adhesive 50 is applied to the lower surface of the lid base material 3 and the lower surface of the horizontal portion 32 of the presser member 30 (see FIG. 8), and before the adhesive 50 is cured. The upper surface of the lid finishing material 4 is adhered, and staples, nails, etc. 51 are driven from the lid finishing material 4 into the lid base material 3 to join the lid finishing material 4 (see FIGS. 2A, 2B, 8A). ..
In this case, the adhesive 50 can be reliably adhered by applying the adhesive so as to be slightly thicker than the thickness of the horizontal portion 32.

In the above description, the case where the cut-up piece 33b is bent and the lid base material 3 having a thin plate thickness is sandwiched and fixed between the cut-up piece 33b and the horizontal portion 32 of the pressing member 30 has been described. When a thick lid base material 3A is used, as shown in FIG. 2C, the cut piece 33a having a narrow width in the height direction is bent, and the lower edge of the cut piece 33a is used as the lid base material 3A. The lid base material 3A can be cut up and fixed between the piece 33a and the horizontal portion 32 of the pressing member 30 so as to be in contact with the upper surface of the peripheral edge of the lid.

Even in this case, since the positioning piece 34a is in contact with or close to the side edge of the lid base material 3A, it is possible to suppress misalignment and rattling of the lid base material 3A.

<Second Embodiment>
The second embodiment is a case where it is applied to a single-paste type ceiling inspection port in which only the lid finishing material 4 is attached to the inner frame 20.
When holding only the lid finishing material 4 on the horizontal portion 32 of the pressing member 30, as shown in FIGS. 9, 10 and 11 (a), the tapping screw 52 penetrating the lid finishing material 4 is attached to the horizontal portion 32. The lid finishing material 4 can be attached by screwing to the prepared prepared hole 38.

In this case, with the lid finishing material 4 in contact with the horizontal portion 32 of the pressing member 30, a through hole (not shown) is provided in the lid finishing material 4 from the prepared hole 38 side by a fine drill, and this through hole is used. Then, the tapping screw 52 can be screw-coupled to the prepared hole 38. Further, instead of this, since the lid finishing material 4 is square, marking is performed through the prepared hole 38 in a state where the lid finishing material 4 is in contact with the horizontal portion 32 of the pressing member 30, and then the lid finishing material 4 is used. 4 can be turned upside down so that the tapping screw 52 can be passed through the marked position and screwed to the prepared hole 38.

The above description has described the case where the lid finishing material 4 having a thin plate thickness is attached, but when the lid finishing material 4A having a thick plate thickness is attached, the plate thickness of the lid finishing material 4A is as shown in FIG. 11B. In a state where the height of the pressing member 30 in the vertical direction is adjusted to be high in accordance with the above, the tapping screw 52 penetrating the lid finishing material 4 is screw-coupled to the prepared hole 38 provided in the horizontal portion 32 in the same manner as described above. Therefore, the lower surface of the lid finishing material 4A can be attached so as to be substantially flush with the lower end of the inner frame material 21.

According to the second embodiment, the tapping screw 52 penetrating the lid finishing materials 4 and 4A is screw-coupled to the prepared hole 38 formed at a predetermined position in the horizontal portion 32 of the pressing member 30, so that the lid finishing material 4 , 4A can be firmly fixed by suppressing misalignment and rattling.
Further, since the presser member 30 having a function of suppressing the displacement and rattling of the lid base materials 3 and 3A can also be used, the number of members can be reduced.

1 Ceiling inspection port 2 Ceiling 2a Opening 3, 3A Closure base material 4, 4A Lid finishing material 10 Outer frame 20 Inner frame 21 Inner frame material 24 Vertical groove hole 25 Reinforcing guide piece 30 Pressing member 31 Vertical part 32 Horizontal part 33a, 33b Raised pieces 34a, 34b Positioning piece 37 Screw hole 38 Pilot hole 40 Fixing screw (screw member)
50 Adhesive 51 Staple 52 Tapping screw (screw member)
Protruding width of P cut-up piece

Claims (7)

The inner frame that can be opened and closed in the outer frame attached to the ceiling is framed by a plate-shaped inner frame material in a rectangular shape, and a substantially L-shaped pressing member is provided on the inner side surface of the inner frame material. The presser member has a vertical portion attached to the inner side surface of the inner frame material and a horizontal portion for both mounting the lower surface of the lid base material inserted in the inner frame and holding the upper surface of the lid finishing material. The cut piece is provided in the vertical portion so as to be bendable inward of the inner frame, and the cut piece is placed in the horizontal portion with the lid base material placed on the horizontal portion. A ceiling inspection port that allows the lid base material to be sandwiched between the cut-up piece and the horizontal portion by bending.
A positioning piece that can come into contact with the side edge of the lid base material as the cut piece is bent is provided at the lower portion of the base end side of the cut piece.
Ceiling inspection port featuring that. At the ceiling inspection port according to claim 1,
A ceiling inspection port characterized in that a reinforcing guide piece having a length substantially equal to the projecting width of the raised piece before bending is formed at the upper end of the inner frame material. At the ceiling inspection port according to claim 1 or 2,
A vertical groove hole is formed at an appropriate position of the inner frame material, a screw hole is provided at a position corresponding to the vertical groove hole in the holding member, and the vertical groove hole is allowed to penetrate from the outside of the inner frame material. The ceiling inspection port is characterized in that the holding member is vertically adjustable and attached to the inner frame material by screwing the screw member to the screw hole. At the ceiling inspection port according to any one of claims 1 to 3,
The lid finishing material is housed in the inner frame below the lid base material, the upper surface of the lid finishing material is joined to the lower surface of the lid base material, and the lower surface of the lid finishing material is the inner frame material. A ceiling inspection port characterized by being located on almost the same surface as the lower end of the ceiling. At the ceiling inspection port according to any one of claims 1 to 4,
The cut pieces are provided at both ends of the presser member in the longitudinal direction, and at each end, the height of the cut pieces abuts on the upper surface of the cover base material in order to accommodate different thicknesses of the cover base material. A ceiling inspection port characterized by the fact that two different types are formed. At the ceiling inspection port according to any one of claims 1 to 5,
A ceiling inspection port characterized in that the lower end edge of the raised piece is formed with a downward slope from the tip of the cut piece toward the base end. At the ceiling inspection port according to any one of claims 1 to 3,
A ceiling inspection port characterized in that a pilot hole to which a screw member for fixing the lid finishing material can be screwed is formed in the horizontal portion of the presser member.

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