JP3145607B2 - 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 an inspection port provided on the ceiling or floor of a building for checking wiring, piping and the like disposed under the ceiling and below the floor.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 16, an inspection port 1 of this kind has an outer frame 2 framed in a substantially rectangular shape attached to a ceiling or floor side opening W, and is detachably attached to the outer frame 2. The inner frame 3 is fitted and fixed to the inner frame 3 as much as possible, and an inner lid plate 4 is fitted to the inner frame 3 via a holding metal fitting 5 in a fitted state. The inner lid 4 is of various thicknesses selected and adopted. In order to cope with this thickness, as shown in the drawing, the longitudinal section of the inner surface of the vertical edge 6 of the inner frame 3 has a cross section substantially in the longitudinal direction. A plurality of mountain-shaped ridges 6a are formed in the height direction,
Also, the ridges 6 of the vertical edge 6 are provided outside the vertical edge 7 of
a, and a plurality of protruding ridges 7a are formed so as to mesh with and engage with each other. It is provided so as to be adjusted vertically and fastened by screws 9.

[0003] Another configuration is disclosed in, for example, Japanese Utility Model Laid-Open No. 48-28629. As disclosed in this publication, as shown in FIG. 17, the inspection opening 11 has an outer frame 12 framed in a substantially rectangular shape and an inner frame 13 attached to the outer frame 12.
The outer frame member 14 constituting the outer frame body 12 has a long hole 1 at a predetermined position in the longitudinal direction.
5 is provided so that a horizontal protruding edge 17 which is moved up and down in accordance with the thickness of the peripheral member 16 through the same long hole 15 is fixed by a screw 18. Body 1
Similarly, an elongated hole 20 is vertically formed at a predetermined position in the longitudinal direction of the inner frame member 19 constituting the inner cover member 3, and the inner lid plate 21 is fitted into the inner frame body 13 through the elongated hole 20. The support member 22 is configured to be attached with the screw 18 in accordance with the thickness.

[0004]

However, in the inspection ports 1 and 11, the position of the presser fitting 5, the lateral protruding edge 17 and the support member 22 are adjusted through the slots 8, 15 and 20 in accordance with the plate thickness. However, if the screws 9 and 18 are loosened, they cannot be reliably supported, and the supporting strength is weak.
Further, in the inspection opening 1, although the ridge 6a of the vertical edge 6 and the ridge 7a of the vertical edge 7 are engaged with each other, there is a problem that if the screw 9 is loosened, reliable support cannot be maintained. . The present invention has been made in order to solve the above-mentioned conventional problems, and can deal with the thickness of an inner lid plate attached to an inner frame body, and can easily be attached and detached and has excellent support strength. It is an object to provide an inspection port having a body.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problem, the present invention is directed to an inner frame in which an inner lid plate is fitted in an outer frame body framed in a rectangular shape. At an inspection opening where the frame body is detachably fitted, the inspection port is located at a predetermined interval along the longitudinal direction of the inner surface of the vertical wall of the inner frame member of the inner frame body.
A plate thickness adjusting portion having a plurality of supporting edges provided below,
An inwardly protruding mounting edge for supporting the inner lid plate and the plate thickness
Removably insertable engagement with the supporting edge of the adjusting part
A bearing member having an edge integrally therewith, the bearing member comprising:
Insertion into the plate thickness adjusting portion corresponding to the plate thickness of the inner lid plate
That is, the engagement position can be selected. Also, billing
The invention according to claim 2 is the inspection port according to claim 1, wherein
At least the opposite thickness control section of the inner frame or the entire inner circumference
Insert the insertion edges of the support members into the multiple support edges of the
Insert and engage to support and fix, then attach the inner lid plate to the inner frame
This is the configuration. And the invention according to claim 3
Is the inspection port according to claim 1 or 2,
The supporting member is formed so that the insertion edge is at least vertically parallel.
To engage with the plate thickness adjusting portion of the inner frame body in a detachable manner.
It was done. Further, the invention described in claim 4 is:
The inspection mouth according to claim 1, claim 2 or claim 3.
The support member may have a mounting edge for supporting the inner lid plate in a hollow shape or a substantially hook-shaped cross section .

[0006]

According to the first aspect of the present invention, the inner lid plate is supported.
The bearing member to be held is engaged with the supporting edge of the plate thickness adjusting portion.
At this time, select the engagement position according to the thickness of the inner lid plate
The inner lid plate of various thicknesses is fastened with any other
It can be easily installed and installed without the need for members,
And it can provide reliable support. Claim 2
According to the invention described in the above, as in claim 1, of the various plate thicknesses,
The lid plate can be easily removed without any other fastening members.
Can be attached and can provide reliable support
It is. According to the third aspect of the present invention,
As in the case of 1, the inner lid plate of various thicknesses is connected to any other fastening members.
Installation work can be easily performed without the need for
It can provide reliable support. Furthermore, claim 4
According to the above-mentioned invention, the mounting edge of the support member has a hollow cross-section and is cut off.
Since it is formed in a key shape with a substantially flat surface, its deformation is prevented.
It is possible to secure mounting strength and support strength.
Wear.

[0007]

FIG. 1 is a perspective view of a floor inspection port 25, and FIG. 2 is a sectional view taken along line AA of FIG. The mouth 25 is composed of an outer frame 26 which is attached to the floor opening Wa and is framed in a substantially rectangular shape, and an inner frame 45 which is fitted inside the outer frame 26.

The outer frame member 26 is formed by forming an outer frame member 27 having the same cross-sectional shape into a substantially rectangular frame. The outer frame member 27 is formed by extruding an aluminum alloy material or by using a stainless steel plate or the like. The cross-sectional shape is formed into a substantially L-shaped cross section by a vertical wall 28 having a predetermined height and a supporting edge 29 extending horizontally from the lower end of the vertical wall 28 with a predetermined width. Also, this support edge 29
A locking edge 30 having a substantially hook-shaped cross section is formed toward the outer side and upper side near the vertical wall 28. An outer decorative edge 31 for decorating the opening side edge of the peripheral member 41 of the floor opening Wa is formed on the upper end side of the vertical wall 28. The outer decorative edge 31 has a convex edge 32 protruding inward and an outer decorative edge 31 formed thereon. An overhanging edge 33 is formed so as to be decorative and has a predetermined overhang width, and an inclined surface 33a that is inclined outward is formed on the upper surface of the overhanging edge 33.
On the lower surface side of the overhanging edge 33, a protruding ridge 34 is provided so as to face the locking edge 30 formed on the lower end side, and the locking edge 3 is formed.
A groove 35 is formed between the protrusion 0 and the ridge 34.

The outer frame member 27 thus formed is cut to a predetermined length, and its left and right ends are cut at a predetermined angle to form an abutting surface C1. When the butting surfaces C1 are butted against each other, they form a substantially frame shape, the ridges 34 and the locking edges 30 are aligned to form a groove 35, and a substantially L-shaped corner is formed between the grooves 35 at the corners. The outer frame 26 is formed by fitting a metal fitting 36 into a substantially rectangular frame.

The corners are joined in various ways, and the corner fittings 36 are made of, for example, a zinc steel plate or the like, and as shown in FIG.
Is formed to have a width capable of being inserted into the groove portion 35, and a substantially U-shaped cut-and-raised groove portion 38 is provided at a predetermined position in the width direction of the insert piece 37 as shown in FIG. Are formed. The cut-and-raised piece 39 is provided on the outer frame member 27 side.
And a substantially rectangular locking hole 27a is provided at a position corresponding to
The insertion piece 37 is cut and raised with the insertion piece 37
9 is formed so as to bend and engage the inner corner portion side from the locking hole 27a to form a frame.

The outer frame 26 thus formed is fixed to the structural member 40 (for example, a joist) extending below the floor opening Wa through the supporting edge 29, for example. The outer decorative edge 31 is engaged with the edge of the peripheral member 41 (floor finishing material) of the floor opening Wa.

The inner frame member 45 is framed by an inner frame member 46 having the same cross-sectional shape into a substantially rectangular shape which is fitted inside the outer frame member 26. The inner frame member 45 is formed by extruding an aluminum alloy material or a stainless steel plate or the like in the same manner as the outer frame member 27.
A vertical wall 47 having a predetermined height opposite to the vertical wall 28 and a supporting edge 48 formed on the supporting edge 29 of the vertical frame member 27 in an overlapping manner are formed at the lower end thereof. The outer end of 48 is bent upward to form a ridge 49. Also,
The upper end of the vertical wall 47 has an inclined surface 50a having substantially the same cross-sectional shape as the outer decorative edge 31 of the outer frame member 27, and decorates the edge of the inner lid plate 54 that is fitted and fixed to the inner frame body 45. Interior decoration edge 5
0 is formed, and on the outer lower surface of the inner decorative edge 50, a ridge 51 is formed opposite to the ridge 49 of the lower supporting edge 48, and a groove 52 is formed between the ridges 49, 51. ing.
Further, a stopper edge 53 of the inner edge plate 54 is formed in a longitudinal direction at a predetermined position on the inner lower surface of the inner decorative edge 50. The inner lid plate 5 is located at a predetermined height position inside the vertical wall 47.
A plate thickness adjusting portion 55 for coping with the various plate thicknesses t of No. 4 is formed.

The plate thickness adjusting portion 55 copes with the plate thickness t of the inner cover plate 54 by a support member 58 attached to the inner cover plate 54, for example, on the lower surface side of the four peripheral edges, and has a predetermined range in the height direction. A plurality of support edges 56 projecting inward at predetermined intervals in the longitudinal direction (in this example, three support edges are illustrated).
An insertion groove 57 formed so as to protrude and be able to insert and support the insertion edges 62a and 62b of the support member 58 between the support edges 56.
a, 57b are formed.

The support member 58 attached to the lower surface of the inner cover plate 54 is formed by extruding an aluminum alloy material or a stainless steel plate, and has a sectional shape along the lower surface of the inner cover plate 54. A mounting edge 59 having a substantially hook-shaped cross section is formed, and an insertion portion 60 is formed at an end of the mounting edge 59. The insertion portion 60 is provided with an insertion receiving edge 61 which hangs downward in the drawing and an upper and lower portion of the insertion receiving edge 61. Insertion edge 62 that can be inserted into insertion groove 57 with a predetermined length
a, 62b are formed so as to protrude, and the insertion edges 62a, 62b are formed.
For example, b is formed at an interval capable of holding the three supporting edges 56 as shown in the figure.

The inner frame member 46 formed as described above is formed to have a predetermined length, and both ends thereof are connected to the outer frame member 2.
7 is cut at a predetermined angle to form an abutting surface C2, and the abutting surfaces C2 of the inner frame members 46 abut each other to form a substantially frame-like shape, thereby forming upper and lower ridges 49,5.
1 are aligned with each other so that the groove portion 52 is continuous, and three supporting edges 56 formed inside each inner frame member 46.
Are coordinated. As shown in FIG. 4 (b), the groove 52 at each corner is framed in a rectangular shape via a corner fitting 36, like the outer frame 26, and the inner frame 4
5 are formed.

The inner lid plate 54 is made of the same material as the peripheral member 41. For example, the inner lid plate 54 has a thickness t1 (approximately 12 mm).
5 and is formed in a substantially rectangular shape so as to be fittable into the holder 5, and a handle 100 is attached at a predetermined interval at the center. The inner lid plate 54 provided in this manner is fitted into the stopper edge 53, and the support member 58 has a short dimension of a predetermined length (for example, the same dimension as the edge length or about 3/4 of the same dimension). As shown in FIG. 2, three support edges 56 are inserted between upper and lower insertion edges 62a and 62b formed in the insertion portion 60 of the support member 58, and are fitted in a mounting manner.
The four peripheral edges on the upper surface side of the inner lid plate 54 are fixedly engaged with the inner decorative edge 50 by being screwed to the inner lid plate 54 through the inner wall 9.

The inner frame 4 with the inner lid plate 54 attached in this manner.
5 is fitted into the outer frame 26, and the lower supporting edge 48 is abutted and mounted on the supporting edge 29 of the outer frame 26 in an overlapping manner.
The inner and outer decorative edges 31, 50 of the frames 26, 45 are aligned with each other at the same position, and the inner lid plate 54 is held at the same position as the peripheral member 41.

As described above, the inner cover plate 54 having the thickness t1 is attached to the inner frame 45 by inserting the inner lid member 54 between the upper and lower insertion edges 61a and 61b formed on the insertion portion 60 of the support member 58. Since the formed three supporting edges 56 are fitted in a sandwiching manner and the edge of the inner cover plate 54 is sandwiched between the inner decorative plate 50 and the interior decoration edge 50, no other fastening member is required. It can be easily installed and installed without being attached, and is easily attached and detached. Further, since the insertion portion 60 and the three supporting edges are of a fitting configuration, reliable support can be obtained and mounting of the supporting member 58 can be achieved. Since the edge 59 is formed to have a substantially hook-shaped cross section, deformation and the like are prevented, and the mounting strength to the inner lid plate 54 can be sufficiently secured, and the supporting strength can be secured.

The thickness t of the inner lid plate 54 is equal to the thickness t1.
In the case of a thicker plate thickness t2 (for example, approximately 14 mm), as shown in FIG. 5A, the upper insertion edge 61a of the insertion portion 60 of the support member 58 is connected to the upper two of the three support edges 56. By being inserted into the insertion groove 57a between the support edges 56a, 56b of the strip, the insertion edge 61a is supported between the support edges 56a, 56b in a sandwiched manner, and the inner cover plate 54 is connected to the inner decorative edge 50.
Is sandwiched between.

The thickness t of the inner lid plate 54 is equal to the thickness t2.
In the case of a still greater plate thickness t3 (for example, approximately 17 mm), as shown in FIG.
0 of the insertion edge 61a on the upper side of the three support edges 56,
By being inserted into the insertion groove 57b between the lower two supporting edges 56b, 56c, the inserting edge 61a becomes the supporting edges 56a, 56c.
The inner cover plate 54 is held between the inner decorative plate 50 and the inner cover plate 54 while being supported between the inner decorative plate 50 and the inner decorative plate 50. Conversely, the insertion edge 61b on the lower side of the insertion portion 60 is inserted into the insertion groove 57b,
57a, the inner lid plate 5 having a thickness smaller than the thickness t1.
4 can be supported.

In this way, the three supporting edges 56 of the inner frame member 46 are clamped or inserted through the upper and lower insertion edges 61a and 61b of the insertion portion 60 in accordance with the various thicknesses t of the inner lid plate 54. It can be easily dealt with by inserting and engaging with 57a and 57b.

FIGS. 6 and 7 show a structure for improving the reliability and strength of the support of the inner lid plate 54.
The floor inspection port 65 shown in FIG.
And an inner frame 66 fitted inside the outer frame 26. The cross-sectional shape of the inner frame member 67 of the inner frame 66 is a vertical shape opposed to the vertical wall 28 of the outer frame 27. A support edge 69 is formed at the lower end of the wall 68 and abuts on the support edge 29 in an overlapping manner, and an outer end of the support edge 69 is bent upward to form a ridge 70. . At the upper end of the vertical wall 68, the edge of the inner lid plate 54, which has an inclined surface 71a having substantially the same cross-sectional shape as the outer decorative edge 31 of the outer frame member 27, is fitted and fixed to the inner frame 66. An inner decoration edge 71 to be decorated is formed, and a projection 72 is formed on the outer lower surface of the inner decoration edge 71 so as to face the projection 70 of the lower supporting edge 69.
A groove 73 is formed between the two. Also, the inner decorative edge 7
A stopper edge 74 of the inner edge plate 54 is formed in a longitudinal direction of a predetermined position on the inner lower surface of the inner edge plate 1. Further, in order to cope with various thicknesses t of the inner lid plate 54 in a predetermined height range from a lower portion of a surface on the inner side of the vertical wall 68, the inner lid plate 54 is protruded at a predetermined interval at a predetermined interval in a longitudinal direction thereof. A plate thickness adjusting portion 75 having a plurality of insertion grooves 77 is formed by the plurality of supporting edges 76. An inner lid plate 54 having a predetermined thickness t is fitted into the inner frame body 66 framed by the inner frame member 67 formed as described above, and an insertion portion of a support member 58 cut to a predetermined length. The upper and lower insertion edges 62a and 62b are inserted into the insertion groove 77 of the plate thickness adjusting portion 75 by changing the insertion position according to the thickness t as shown by a two-dot chain line and screwing the inner cover plate. In addition to being able to cope with various thicknesses of the inspection port 25, the same effect as that of the inspection port 25 can be obtained, and the state of attachment of the inner lid plate 54 to the adjustment portion 75 of the support member 58 is determined by the upper and lower insertion edges 62a, Since the 62b is inserted into the insertion groove 77 while sandwiching the three supporting edges 76, the reliability and the supporting strength of the support of the inner lid plate 54 can be significantly increased.

The floor inspection port 80 shown in FIG. 7 is almost the same as the inspection port 65, and the cross-sectional shape of the inner frame member 82 of the inner frame body 81 is opposed to the vertical wall 28 of the outer frame member 27. A supporting edge 84 is formed at the lower end of the vertical wall 83 that is
A ridge 85 projects upward from the outside end of the vertical wall 8.
An inner decorative edge 86 is formed at the upper end of the inner decorative edge 8.
Reference numeral 6 denotes a protruding ridge which is formed by cutting a part of the inclined surface 71a of the inner decorative edge 71 and omitting the stopper rim 53 so that the upper surface side is formed substantially flat, and the outer surface thereof is opposed to the protruding ridge 85 of the support rim 84. A groove 88 is formed between the ridges 85, 87, and the inner decorative edge 86 is
4 is formed in a cross-sectional shape formed in a thick shape. A support edge 84 on the inner side surface of the vertical wall 83 and an inner decorative edge 86
A thickness adjusting portion 89 having a plurality of insertion grooves 91 is formed by a plurality of support edges 90 protruding at a predetermined interval along the longitudinal direction at a predetermined overhang width.
A support member 92 attached to the four peripheral edges of the inner lid plate 54
The mounting portion 93 is formed in a substantially rectangular cylindrical shape having a hollow portion 93a in section, and one side 95 of the mounting portion 93 is formed as a plug portion 94. , 96b are projected. In addition, the interval between the insertion edges 96a and 96b is formed such that the three support edges 90 can be clamped similarly to the insertion edges 62a and 62b of the support member 58. An inner lid plate 54 having a predetermined thickness t is fitted into the inner frame body 81 framed by the inner frame member 82 thus formed, and the support member 92 is cut into a predetermined length, and Similarly, the upper and lower insertion edges 96a and 96b of the insertion portion 94 of the support member 92 are indicated by two-dot chain lines with respect to the insertion grooves 91 of the plate thickness adjusting portion 89, respectively.
By changing the insertion position, it is possible to cope with various thicknesses of the inner lid plate 54, and to achieve the same operation and effect as the inspection port 65, and to adjust the support member 92 of the inner lid plate 54. Since the adjusting portion 89 is formed in the entire width between the supporting edge 84 and the interior decoration portion 86 for attachment to the 89, the range of the plate thickness can be expanded, and the outer surfaces of the support edge 84 and the interior decoration portion 86 are flat. So the inner frame 81
Can be used inverted. Further, since the mounting portion 93 of the support member 92 is formed in a substantially rectangular cylindrical shape having a hollow portion 93a, deformation and the like are prevented, and the mounting strength and support strength to the inner lid plate 54 can be significantly increased.

Since the inner frame members 67 and 82 of the inner frame bodies 66 and 81 are formed with a plurality of supporting edges 76 and 90 in a portion corresponding to almost the entire width of the vertical walls 68 and 83,
When the frame is formed, it is difficult to form the frame by forming the locking holes in the vertical walls 68 and 83 with the corner fitting 36 having the above-described cut-and-raised pieces 39, and therefore, is shown in FIGS. Corner fitting 98 bent into a substantially L-shape
U-shaped concave grooves 9 corresponding to the upper and lower edges of the insertion piece 99 of FIG.
9a, and as shown in FIG.
The upper and lower ridges 70, 72 and the ridges 85, 87 are prevented from being pulled out of the concave groove 99a by crimping molding K in a state where the insertion piece 99 is inserted into the grooves 73, 88 to form a frame.

FIG. 10 shows another embodiment of the bearing edge 56 of the plate thickness adjusting portion 55 formed on the inner frame member 46, for example, and shows the longitudinal direction of the lower surface of the tip of each bearing edge 56a, 56b, 56c. A substantially semicircular force bone portion 56d is formed along the direction, and by inserting the insertion edge 62a or the insertion edge 62b of the insertion portion 60 into each of the insertion grooves 57a and 57b, the clamping force becomes strong. , This power bone 56
The supporting strength can be improved using d as a fulcrum. In addition, the force bone portion 56d is connected to the supporting edge 7 of the inner frame members 67 and 82.
6, 90 may be applied.

FIGS. 11 to 13 show the inner frame 45,
The details of a handle 100 to be attached to a substantially rectangular long hole 54a opened at a predetermined position of the inner lid plate 54 at 66, 82 are shown. The handle 100 is a rotary handle,
11 and 12, the mounting body 101 is provided at the center of a rectangular flange lid 102 capable of closing the elongated hole 54a, as shown in FIGS.
A hole 103 is formed in the lower surface of the flange lid body 102 so as to be able to fit thereinto. A rim 104a of the hole 103 for the handle and elongated holes 54a are formed on both sides of the rim 104a.
Edge portions 104b are formed to be fitted to both end portions of the boss, and mounting bosses 105 each having a thread portion are formed in the edge portions 104a. A bracket 106 having a pin hole for pivotally attaching the handle 107 is formed at a predetermined position of the rim 104a.

Further, as shown in FIG.
A linear portion 109a and an arc-shaped portion 109b, which can be inclined at a predetermined angle in a deformed U-shape, are formed on the lower surface side of a lid portion 108 in which a handle hole formed in the flange lid body 102 is fitted so as to be able to close the handle 103. A grip portion 109 is formed on the base portion of the linear portion 109a. A pivot portion 110 is formed between the bracket 106 of the mounting body 101 and pivotally attached to the bracket portion. A stopper pin 111 is formed at the lower end of the linear portion 109a so as to extend in the left-right direction and to be able to abut between the edge portions 104a. Also, a flange lid is provided at the end of the lid 108 on the side of the linear portion 109a.
A stopper piece 112 is formed on the lower surface side of the stopper 102 so as to abut and engage with the lower surface side. The gripping body 107 thus formed is pinned between the brackets 106 of the mounting main body 101 via the pivots 110.
It is pivoted by 113.

The mounting body on which the gripping body 107 is mounted as described above.
101 has an edge portion 104b fitted into an elongated hole 54a of the inner lid plate 54, and a flange lid body on the back side of the elongated hole 54a.
The grip portion 109 of the handle body 107 has a rectangular shape slightly larger than 102.
A holding plate 114 having a long hole 115 through which the handle 100 can be inserted is mounted via a mounting boss 105, and the handle 100 is a flange cover.
The inner cover plate 54 is attached to the inner cover plate 54 by the holding plate 102 and the holding plate 114. In this mounting state, the handle 107 is pivoted downward about the pin 113 by the weight of the grip 109, whereby the stopper piece 112 is brought into contact with the lower surface of the flange lid 102, and the lid 108 is brought into contact with the flange lid 102. Are coplanar and the handle hole 103 is closed. The handle 107 from the closed state
By pressing the end of the lid 108 on the side of the stopper piece 112, the other end of the lid 108 is lifted up, and the lid 108 is pulled out by holding the same end and pivoting around the pin 113.
Is almost vertical and the stopper pin 111 is
The inner frame bodies 45, 66, and 82 can be attached and detached by holding the arc-shaped portion 109b in this state.

In the above embodiment, the corner fittings 36, 98 are separately used in the frame of the outer frame 26 and the inner frames 45, 66, 81. However, the present invention is not limited to this. May be applied.

Next, the case of the ceiling inspection port will be described. FIG. 14 is a cross-sectional view of the ceiling inspection port 121. The outer frame body 122 has a substantially rectangular shape and is attached along the ceiling opening Wb. And an inner frame 140 attached to the outer frame 122 so as to be capable of being opened and closed.

The outer frame member 122 is formed by forming an outer frame member 123 having the same cross-sectional shape into a substantially rectangular frame. The outer frame member 123 is formed by extruding an aluminum alloy material or by using a stainless steel plate or the like. A vertical vertical wall 124 having a predetermined height in cross section, and an outer decoration in which the lower end of the vertical wall 124 is formed by hanging the opening side edge of the peripheral member 134 of the ceiling opening Wb as a hanging strip. An edge 125 is formed, and the outer decorative edge 125 is formed with a convex edge 126 protruding inward and a projecting edge 127 projecting outward with a predetermined projecting width so as to be decorable outward. Inclined inclined surface 127a
In addition, a stopper edge 128 for abutting the peripheral member 134 is provided on the upper surface side of the overhanging edge 127 so as to protrude along the longitudinal direction. At the upper end side of the vertical wall 124, a locking edge 129 having a substantially hook-shaped cross section is provided so as to face the stopper edge 128, and a groove is formed between the locking edge 129 and the stopper edge 128.
130 are formed. Outer frame member formed in this way
123 is cut to a predetermined length, the left and right ends are cut at a predetermined angle to form an abutting surface, and by abutting the abutting surfaces, the mutual stopper edge 128 and the locking edge 129 are formed. The grooves 130 are aligned so that the outer frame 122 is formed into a frame through a corner fitting 131 substantially similar to the above.

At a predetermined position near one side of one corresponding outer frame member 123 of the outer frame body 122 thus framed,
As shown in FIG. 15, a rotary shaft 132 having a flange portion 133 which protrudes inward and has a tip portion slidably fitted in the groove portion 147 of the inner frame body 140 so as to be freely fitted is attached. The outer frame body 122 thus framed is fitted in the ceiling opening Wb in an in-fit manner, and the outer decorative edge 125 is abutted on the lower surface of the peripheral edge of the peripheral member 134 of the opening Wb, and It is attached to the ceiling structural member 136 via a hanging bracket 135 in a suspended manner.

The inner frame 140 is framed by an inner frame member 141 having the same cross-sectional shape into a substantially rectangular shape which is fitted inside the outer frame 122. The inner frame member 140 is formed by extruding an aluminum alloy material or a stainless steel plate, and has a cross-sectional shape formed by a vertical wall 142 having a predetermined height opposed to the vertical wall 124 of the outer frame member 123 and a lower end thereof. Is formed with an inner decoration edge 143 having an inclined surface 143a substantially symmetrical to the outer decoration edge 125 of the vertical frame member 123, and an outer end of the inner decoration edge 143 is formed with a ridge 144 upward, and A stopper edge 145 of the ceiling lid 149 is also provided on the upper surface. On the outer side of the upper end of the vertical wall 142, a ridge formed on the inner decorative edge 143 is provided.
A locking edge 146 having a hook-shaped cross section is formed opposite to 144, a groove 147 is formed between the ridge 144 and the locking edge 146, and a projection 148 is formed on the upper end in a substantially horizontal inward direction. Is protruding. At a predetermined height position inside the vertical wall 142, a plate thickness adjusting section 150 for coping with various plate thicknesses t of the ceiling inner lid plate 149 is formed.

The plate thickness adjusting section 150 is formed by a support member 155 attached to, for example, the upper surface side (rear side) of the ceiling inner cover plate 149, for example, on the four peripheral edges, similarly to the floor inspection port 25.
In the longitudinal direction of a predetermined range in the height direction, a plurality of supporting edges 151 extending inward at predetermined intervals are provided (in this example, three supporting edges are used). Insertion grooves 152a and 152b are formed between the support edges 151 (shown as examples) so as to insert and support the insertion edges 159a and 159b of the support member 155.

A support member 155 mounted on the upper surface of the four-circumferential surface of the ceiling inner cover plate 149 is formed by extruding an aluminum alloy material or a stainless steel plate, and has a sectional shape along the upper surface of the ceiling inner cover plate 149. A mounting edge 156 having a substantially key-shaped cross section and an insertion portion 157 is formed at an end of the mounting edge 156. The insertion portion 157 is a plug receiving edge 158 that rises upward in the drawing, and the plug receiving edge 158
Inserting edges 159a and 159b which can be inserted into the inserting grooves 152a and 152b with a predetermined length are formed projecting above and below the inserting edge 15a.
For example, 9a and 159b are formed at intervals at which three supporting edges 151 can be clamped as shown in the figure.

The inner frame member 141 thus formed is formed to have a predetermined length, and both ends thereof are formed at the outer frame member 12.
The inner frame member 141 is cut at a predetermined angle to form an abutting surface, and the upper and lower ridges 144 and the locking edge 146 are aligned with each other by abutting the abutting surfaces of the inner frame members 141 to form the groove 147. And the inner frame members 14
The three bearing edges 151 formed on the inside of 1 are aligned. In addition, an outer frame body is provided in the groove 147 at each corner.
Similarly to 123, an inner frame 140 is formed by being framed in a rectangular shape via a corner fitting 131.

The ceiling inner lid plate 149 is made of the same material as the peripheral member 134. For example, the ceiling inner lid plate 149 is formed in a substantially square shape so as to be fit into the inner frame 140 with a predetermined plate thickness ta, and is fitted to the inner frame 140. The support member 155 attached to the upper surface of each edge side of the ceiling inner lid plate 149 is cut into a short dimension of a predetermined length,
The three supporting edges 151 are inserted between upper and lower insertion edges 159a and 159b formed on the insertion portion 157 of the supporting member 155, and are fitted to the upper surface of the ceiling inner cover plate 149 via the mounting edge 156. By attaching the screws, the four peripheral edges of the ceiling inner lid plate 149 abut and engage with the inner decorative edge 143 to be fixed.

The inner frame 140 thus formed is an outer frame.
Although not shown, the protrusions 144 and the locking edges 146 of the inner frame member 141 on the side corresponding to the rotating shaft 132 correspond to the sliding shaft 122 at a predetermined position. Notch and the groove of the rotary shaft 132 in the groove 147
The inner frame member 141 is provided so that the
Although not shown, the vertical wall 142 is formed at both ends with cut-off or bulging stopper portions of the flange portion 133, for example. In addition, the inner frame member 141 having the cut-out portion has three bearing edges at the center portion inside the vertical wall 142 of the inner frame member 141 on the far side by the rotation shaft 132 of the other opposed inner frame member 141. 151
A lock 160 is attached to the upper end of the vertical wall 124 of the outer frame body 122 so as to be partially cut away.

The inner frame 140 provided in this manner is inserted perpendicularly to the outer frame 122 attached to the ceiling opening Wb, and the flange 133 of the rotary shaft 132 is fitted into the groove 147 from the notch. The ceiling opening Wb can be opened and closed by rotating through the rotary shaft 132, and the ceiling opening Wb is closed by engaging the lock 160 with the outer frame 122 in a closed state.

As described above, the ceiling inner lid plate 149 having the plate thickness ta is attached to the inner frame 140 by the upper and lower insertion edges 159a, 159a formed on the insertion portion 157 of the support member 155 mounted on the four circumferential upper surfaces thereof.
Three supporting edges 15 formed inside the inner frame member 141 between 159b
1 is sandwiched and fitted, and the edge of the inner lid plate 149 is sandwiched between the inner decorative edge 143, so that it can be easily installed without any additional fastening members. Can be easily attached and detached.
And the three supporting edges 151 have a fitting configuration, so that reliable support can be obtained and the supporting strength can be ensured.

If the thickness ta of the ceiling inner cover plate 149 is changed, or if the thickness of the ceiling inner cover plate 149 is changed by combining a decorative veneer or the like, the floor inspection port 25 is changed.
The insertion position is changed to the insertion grooves 152a, 152b between the three supporting edges 151 of the inner frame member 141 via the upper and lower insertion edges 159a, 159b of the insertion portion 157 in accordance with the changed plate thickness in the same manner as described above. Therefore, it is possible to easily cope with various thicknesses.

The support members 58, 92, and 155 are attached to the four sides of the inner lid plate 54 of the floor inspection ports 25, 65, and 80 and the ceiling inner lid plate 149 of the ceiling inspection port 121, but the present invention is not limited to this. Instead, it may be configured to be attached to the corresponding edge, and in this case, the same operation and effect as described above can be obtained.

[0043]

According to the first aspect of the present invention, the inner lid plate is supported.
The supporting member to be engaged with the supporting edge of the plate thickness adjusting part.
At this time, select the engagement position corresponding to the thickness of the inner lid plate
Can be done. With this, the inner lid plate of various thickness
Can be easily installed without any other fastening members.
It can be worked and can provide reliable support. Claim
According to the invention of (2) and (3), the plate thickness adjusting portion of the inner frame is
Insert the insertion edge of the support member into the formed multiple support edges.
Easily deal with various thicknesses of the inner lid plate by changing the insertion position
It can be mounted in various thicknesses as in claim 1.
The inner lid plate can be easily installed without any other fastening members.
Can be installed on the floor and can provide reliable support
You. According to the invention of claim 4, deformation of the bearing member is prevented.
The mounting strength and support strength.
Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor inspection port.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view of a corner portion.

FIG. 4 (a) is a cross-sectional view of the corner portion of the outer frame connected by a corner fitting. (b) It is connection sectional drawing by the corner fitting of the corner part of an inner frame.

FIGS. 5 (a) and 5 (b) are explanatory diagrams of adjustment of attachment with respect to the thickness of the inner lid plate.

FIG. 6 is an explanatory diagram of attachment adjustment to the thickness of the inner lid plate by another inner frame member.

FIG. 7 is an explanatory diagram of attachment adjustment to the thickness of the inner lid plate by another inner frame member.

FIG. 8 is a side view of another corner fitting.

FIG. 9 is a perspective view of a corner connection by the corner fitting of FIG. 8;

FIG. 10 is a cross-sectional view of another supporting edge in the plate thickness adjusting portion of the inner frame member.

FIG. 11 is a detailed view of a handle.

FIG. 12 is a bottom view of the mounting body of the handle.

FIG. 13 is a front view of the handle body.

FIG. 14 is a sectional view of a ceiling inspection port.

FIG. 15 is a sectional view of a rotation shaft portion of the ceiling inspection port.

FIG. 16 is an explanatory diagram of a conventional thickness adjustment of an inner lid plate.

FIG. 17 is an explanatory diagram of another plate thickness adjustment of the conventional inner lid plate.

[Explanation of symbols]

 25, 65, 80 Floor inspection port 26 Outer frame body 45, 66, 81 Inner frame body 46, 67, 82 Inner frame member 47, 68, 83 Vertical wall 54 Inner lid plate 55, 75, 89 Plate thickness adjusting part 56, 76,90 Supporting edge 58,92 Supporting member 59 Mounting edge 92 Mounting portion (mounting edge) 92a Hollow portion 62,96 Insertion edge 121 Ceiling inspection port 122 Outer frame 140 Inner frame 141 Inner frame member 142 Vertical wall 149 Inside ceiling Lid plate 150 Plate thickness adjustment part 151 Bearing edge 155 Bearing member 159 Insert edge

Claims (4)

(57) [Claims] 1. An inspection port for removably mounting an inner frame body having an inner lid plate fitted therein in a rectangular frame-shaped outer frame body, wherein a vertical wall of an inner frame member of the inner frame body is provided. Along the length of the inner surface and
Thickness with multiple supporting edges set up and down at specified intervals
An adjusting portion, an inwardly extending mounting edge for supporting the inner lid plate, and
The difference in removably inserting engagement with the bearing edge of the thickness adjustment part
And a support member having an integral bevel edge. The support member has a thickness adjustment corresponding to the thickness of the inner lid plate.
An inspection port characterized in that an insertion engagement position with respect to a node portion can be selected . 2. A thickness control for at least the opposed inner frame body.
The bearings on the joint edges or on the multiple
Insert and engage the insertion edge of the member to support and fix it,
2. The structure according to claim 1, wherein the inner cover plate is mounted.
Inspection port described . 3. The supporting member has at least an insertion edge.
Vertically parallel to to claim 1 or claim 2 access port, wherein it has a structure in which plate thickness engaging in the regulation portion detachably inserted engagement of the inner frame member. Wherein said first aspect the bearing member, characterized in that the formation of the mounting edge for supporting the inner lid plate in a hollow shape or a substantially key shape, claim 2 or claim 3 inspection port as claimed.