JPH08312123A - Inspection opening - Google Patents

Abstract

PURPOSE: To improve the workability, by providing an adjusting part of a plate thickness at the inner face of vertical wall of the inner frame member of an internal frame body detachably fitted in an external frame body and fixing inner covering boards having various thicknesses through an insertion edge or the like fixed thereto. CONSTITUTION: When an inner covering board 54 is to be fixed to an internal frame body 45, a support edge 56 formed at the inside of an internal frame member 46 is fitted between insertion edges 62a, 62b provided at the insertion part 60 of a support member 58 and the edge of the inner covering board 54 is held between an inner decoration edge 50 and the support member 58. And hence the covering board can be easily and securely fixed without fastening members and the fixing strength is sufficiently secured. When changing the thickness of covering board 54, the insertion edges 62a, 62b are inserted in required insertion grooves 57a, 57b provided in the support edge 56. In this way, the inner covering board 54 can be easily fitted or removed to correspond to boards with various thicknesses and also the fixing strength and support strength can be remarkably increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection port for inspecting wirings, pipes and the like which are attached to the ceiling or floor of a building and are arranged under the ceiling or under the floor.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 16, an inspection port 1 of this kind is provided with an outer frame body 2 which is attached to a ceiling or floor side opening W and which is framed in a substantially rectangular shape, and which is attached to and detached from the outer frame body 2. An inner frame body 3 which is fitted and fixed in an inner fitting shape as much as possible, and an inner lid plate 4 is attached to the inner frame body 3 in a fitting manner via a press fitting 5. As the inner lid body 4, various thicknesses are selected and adopted, and in order to cope with this thickness, the cross section of the inner side surface of the vertical edge 6 of the inner frame body 3 in the longitudinal direction is approximately as shown in the drawing. Plural mountain-shaped convex stripes 6a are formed in the height direction,
In addition, the ridges 6 of the vertical edge 6 are provided outside the vertical edge 7 of the holding metal fitting 5.
A plurality of ridges 7a that mesh with a are formed, and elongated holes 8 are formed at predetermined positions on the left and right sides of the holding metal fitting 5 so as to correspond to the thickness of the inner lid plate 4. It is provided so as to be vertically adjusted and fixed by screws 9.

Another structure is disclosed, for example, in Japanese Utility Model Laid-Open No. 48-28629. As shown in FIG. 17, the one disclosed in this publication is such that the inspection port 11 has an outer frame body 12 framed in a substantially rectangular shape, and an inner frame body 13 in the outer frame body 12.
The outer frame member 14 constituting the outer frame body 12 is vertically fitted with a long hole 1 at a predetermined position in the longitudinal direction.
5 is provided so as to penetrate therethrough, and a laterally projecting edge 17 that is moved up and down in response to the plate thickness of the peripheral member 16 through the same elongated hole 15 is provided so as to be fixed by a screw 18, and an inner frame is also provided. Body 1
Similarly, an elongated hole 20 is vertically provided at a predetermined position in the longitudinal direction of the inner frame member 19 forming the inner frame member 19, and an inner lid plate 21 fitted into the inner frame body 13 through the elongated hole 20. The support member 22 is configured to be attached by the screw 18 according to the plate thickness.

[0004]

However, at the inspection ports 1 and 11, the position of the holding metal fitting 5, the lateral protruding edge 17 and the support member 22 is adjusted by coping with the plate thickness through the elongated holes 8, 15 and 20. However, if the screws 9 and 18 are loosened, they cannot be reliably supported, and there is a problem that the supporting strength is weak.
Further, at the inspection port 1, although the ridges 6a of the vertical edge 6 and the ridges 7a of the vertical edge 7 are engaged with each other, there is a problem that if the screws 9 are loosened, reliable support cannot be maintained. . The present invention has been made in order to solve the above-mentioned conventional problems, and is capable of coping with the thickness of the inner lid plate attached to the inner frame body, and is easy to attach and detach and is excellent in supporting strength. The purpose is to provide an inspection port equipped with a body.

[0005]

SUMMARY OF THE INVENTION In order to solve the above technical problems, the present invention detachably mounts an inner frame body in which an inner lid plate is fitted in an outer frame body framed in a rectangular shape. In the inspection port to be provided, a plate thickness adjusting portion having a plurality of supporting edges provided at predetermined intervals along the longitudinal direction of the inner surface of the vertical wall of the inner frame member of the inner frame body is provided. It is configured to be able to cope with various plate thicknesses of the inner lid plate through a supporting member having a inserting edge that is removably inserted and engaged and an attaching edge that projects inward and is attached to and supports the inner lid plate, Further, the inner lid plate is attached such that a supporting member is inserted into and engaged with and supported by and fixed to at least a plate thickness adjusting portion of the inner frame body or a plate thickness adjusting portion of the entire inner circumference. And the insertion edges of the support member are formed at least vertically parallel to each other to form a plate thickness adjusting portion of the inner frame. Is to have a configuration in which the insertion engaging detachably, further attaching edge of said bearing member is a check port formed in a hollow shape or cross section key shape.

[0006]

With the above construction, this insertion engagement enables easy attachment and construction without the need for any other fastening member, and ensures reliable support, and the plate thickness adjusting portion of the inner frame body. By changing the insertion position of the insertion edge of the support member attached to the inner lid plate, the insertion groove can be attached to the insertion groove formed between the plurality of support edges while coping with various plate thicknesses of the inner lid plate. Further, since the mounting edge of the support member is formed to have a hollow cross section and a substantially hooked cross section, it is possible to prevent deformation and the like and secure the mounting strength and the supporting strength.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a floor inspection port 25, and FIG. 2 is a sectional view taken along the line AA of FIG. The mouth 25 is composed of an outer frame body 26 that is attached to the floor opening Wa and is framed in a substantially rectangular shape, and an inner frame body 45 that is fitted in the outer frame body 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, and the outer frame member 27 is formed by extruding an aluminum alloy material or is made of a stainless steel plate or the like. The cross-sectional shape is formed into a substantially L-shaped cross section by a vertical vertical wall 28 having a predetermined height and a supporting edge 29 that horizontally extends from the lower end of the vertical wall 28 with a predetermined overhanging width. Also, this support edge 29
A locking edge 30 having a substantially hook-shaped cross section is formed toward the upper side of the vertical wall 28 toward the outside. Further, 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 and the convex edge 32 protruding inward and the outer side. An overhanging edge 33 is formed so as to be decorativeable with a predetermined overhanging width, and an inclined surface 33a inclined outward is formed on the upper surface of the overhanging edge 33.
Further, a protrusion 34 is provided on the lower surface side of the projecting edge 33 so as to face the engaging edge 30 formed on the lower end side, and the engaging edge 3 is formed.
A groove 35 is formed between 0 and the ridge 34.

The outer frame member 27 thus formed is cut into a predetermined length, and the left and right ends thereof are cut at a predetermined angle to form the abutting surface C1. When the abutting surfaces C1 are abutted with each other, the protrusions 34 and the locking edges 30 are aligned with each other to form a groove, and the groove 35 is continuous. An outer frame body 26 is formed by fitting the metal fitting 36 into a frame having a substantially rectangular shape.

The corners are joined in various ways. The corner fitting 36 is made of, for example, a zinc steel plate, and the insertion piece 37 is formed as shown in FIG. 4 (a).
Is formed to have a width that can be inserted into the groove portion 35, and a cut-and-raised groove portion 38 having a substantially U-shape is penetratingly provided at a predetermined position in the width direction of the insertion piece 37 as shown in the drawing. Are formed. The cut-and-raised piece 39 is provided on the outer frame member 27 side.
A substantially rectangular locking hole 27a is provided at a position corresponding to
With the insert piece 37 inserted in the groove 35, the cut piece 3 is cut and raised.
9 is formed so as to be bent and engaged from the locking hole 27a toward the inner corner portion side to form a frame.

The outer frame body 26 thus formed is fixed to the structural member 40 (for example, joist member) extending to the lower side of the floor opening Wa, for example, through the support edge 29, and at the same time, to the upper side. 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 body 45 is framed by an inner frame member 46 having the same cross-sectional shape so as to be fitted inside the outer frame body 26. Similar to the outer frame member 27, the inner frame member 45 is formed by extruding an aluminum alloy material or is made of a stainless steel plate or the like, and has a cross-sectional shape of the outer frame member 27.
A vertical wall 47 having a predetermined height, which opposes the vertical wall 28, and a support edge 48, which is placed in contact with the support edge 29 of the vertical frame member 27 in a superposed manner, are formed on the lower end of the vertical wall 47. 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 portion of the inner lid plate 54 fitted and fixed to the inner frame body 45. Interior decoration edge 5
0 is formed, a ridge 51 is formed on the outer lower surface of the inner decorative edge 50 so as to face the ridge 49 of the lower support edge 48, and a groove 52 is formed between the ridges 49 and 51. ing.
Further, a stopper edge 53 of the inner edge plate 54 is formed at a predetermined position on the inner lower surface of the inner decoration edge 50 in the longitudinal direction. In addition, the inner lid plate 5 is provided at a predetermined height position inside the vertical wall 47.
A plate thickness adjusting portion 55 for coping with various plate thicknesses t of 4 is formed.

The plate thickness adjusting portion 55 deals with the plate thickness t of the inner lid plate 54 by a support member 58 attached to the lower surface of the four edges of the inner lid plate 54, for example, and has a predetermined range in the height direction. There are a plurality of bearing edges 56 extending inward in the longitudinal direction of the bearing at predetermined intervals (in this example, the case of three bearings is illustrated).
An insertion groove 57 that is formed so as to project and is capable of inserting and supporting the insertion edges 62a and 62b of the support member 58 between the support edges 56.
a and 57b are formed.

The support member 58 attached to the lower surface of the inner cover plate 54 on the four sides is made of an aluminum alloy material by extrusion molding or a stainless steel plate, and its cross-sectional shape is attached along the lower surface of the inner cover plate 54. A mounting edge 59 having a substantially hook-shaped cross section and an insertion portion 60 is formed at an end portion of the mounting edge 59. The insertion portion 60 has a reception edge 61 that hangs downward in the drawing, and an upper and lower sides of the insertion edge 61. Insertion edge 62 that can be inserted into the insertion groove 57 with a predetermined length
a and 62b are formed so as to project, and the insertion edges 62a and 62b
For example, as shown in the drawing, b is formed at intervals so that three support edges 56 can be held.

The inner frame member 46 thus formed is formed to have a predetermined length, and both ends of the inner frame member 46 are formed at the outer frame member 2.
7, the abutting surface C2 is formed by cutting at a predetermined angle, and the abutting surfaces C2 of the inner frame members 46 are abutted to each other to form a substantially frame shape and the upper and lower ridges 49, 5 are formed.
1 are aligned and the groove 52 is continuous, and three support edges 56 formed inside each inner frame member 46.
Are aligned with peers. In addition, as shown in FIG. 4B, the inner frame 4 is framed in a rectangular shape through the corner metal fittings 36 in the groove 52 of each corner as shown in FIG. 4B.
5 is formed.

The inner cover plate 54 is a member of the same quality as the peripheral member 41, and has a plate thickness t1 (approximately 12 mm), for example.
The handle 100 is formed in a substantially rectangular shape so that the handle 100 can be fitted in the handle 5, and grips 100 are attached to the central portion at predetermined intervals. 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 approximately 3/4 of the same dimension). As shown in FIG. 2, the three mounting edges 56 are inserted between the upper and lower insertion edges 62a and 62b formed in the insertion portion 60 of the support member 58 so as to fit into the mounting edge 5
By screwing onto the inner lid plate 54 via 9, the four peripheral edges on the upper surface side of the inner lid plate 54 are abutted and fixed to the inner decorative edge 50.

The inner frame body 4 with the inner lid plate 54 attached in this way
5 is fitted into the outer frame body 26, and the supporting edge 48 on the lower side thereof is placed in contact with the supporting edge 29 of the outer frame body 26 in a superposed manner,
The decorative edges 31 and 50 inside and outside the frame bodies 26 and 45 are matched with each other, and the inner cover plate 54 is held to be the same as the peripheral member 41.

As described above, the inner cover plate 54 having the plate thickness t1 is attached to the inner frame member 45 by inserting the inner cover member 54 inside the inner frame member 46 between the upper and lower insertion edges 61a and 61b formed in the insertion portion 60 of the support member 58. The three support edges 56 thus formed are fitted into each other in a sandwiched manner, and the edge portion of the inner cover plate 54 is sandwiched between the inner decorative edge 50 and the inner decorative edge 50. Therefore, any other fastening member is required. Can be easily installed and removed, and can be easily attached and detached. Also, since the insertion portion 60 and the three supporting edges are in a fitting configuration, reliable support can be obtained and the supporting member 58 can be attached. Since the rim 59 is formed in a substantially hook shape in cross section, it is prevented from being deformed or the like, so that the mounting strength to the inner lid plate 54 can be sufficiently secured and the supporting strength can be secured.

The plate thickness t of the inner lid plate 54 is the plate thickness t1.
In the case of a thicker plate thickness t2 (for example, approximately 14 mm), as shown in FIG. 5 (a), the insertion edge 61a on the upper side of the insertion portion 60 of the support member 58 is the upper side of the three support edges 56. By inserting into the insertion groove 57a between the support edges 56a and 56b of the strip, the insertion edge 61a is supported in a pinch-like manner between the support edges 56a and 56b, and the inner cover plate 54 is attached to the inner decorative edge 50.
Be held in between.

The plate thickness t of the inner lid plate 54 is the plate thickness t2.
In the case of a thicker plate thickness t3 (for example, about 17 mm), the insertion portion 6 of the support member 58 is shown in FIG. 5 (b).
0 of the insertion edge 61a on the upper side of the three support edges 56,
By inserting it into the insertion groove 57b between the lower two support edges 56b, 56c, the same insertion edge 61a becomes the support edges 56a, 56.
The inner cover plate 54 is supported between the b and the inner cover plate 54 while being held in a sandwiched manner. Further, contrary to the above, the insertion edge 61b on the lower side of the insertion portion 60 is inserted into the insertion groove 57b,
The inner lid plate 5 having a plate thickness smaller than the plate thickness t1 by being inserted into 57a.
4 can be supported.

In this way, the three support 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 according to various plate thicknesses t of the inner lid plate 54. This can be easily dealt with by inserting and engaging with 57a and 57b.

Next, FIGS. 6 and 7 show a structure for improving the certainty and support strength of the support of the inner cover plate 54.
The floor inspection port 65 shown in FIG. 6 is the outer frame 26 as in the conventional case.
The inner frame member 66 of the inner frame member 66 is fitted in the outer frame member 26. The inner frame member 67 of the inner frame member 66 has a vertical cross section that is opposed to the vertical wall 28 of the outer frame member 27. At the lower end of the wall 68, a support edge 69 is formed which is placed in contact with the support edge 29 in a superposed manner, and the outer end of the support edge 69 is bent upward to form a ridge 70. . Further, at the upper end of the vertical wall 68, an edge portion 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 and which is fitted and fixed to the inner frame body 66 is provided. 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 support edge 69.
A groove 73 is formed between the two. In addition, interior decoration edge 7
A stopper edge 74 of the inner edge plate 54 is formed in a longitudinal direction at a predetermined position on the inner lower surface of 1. Further, in order to cope with various plate thicknesses t of the inner lid plate 54 in a predetermined height range from the lower part of the inner surface of the vertical wall 68, the inner cover plate 54 is projected with a predetermined overhang width at predetermined intervals in the longitudinal direction thereof. A plate thickness adjusting portion 75 having a plurality of insertion grooves 77 is formed by the plurality of bearing edges 76. The inner frame member 66 framed by the inner frame member 67 formed in this way is fitted with the inner lid plate 54 having a predetermined plate thickness t, and the insertion portion of the support member 58 cut into a predetermined length. As shown by the chain double-dashed line, the upper and lower insertion edges 62a and 62b of 60 are inserted into the insertion groove 77 of the plate thickness adjusting portion 75 by changing the insertion position according to the plate thickness t and attaching by screws. It is possible to cope with various plate thicknesses of 54, and the same effect as the inspection port 25 can be obtained, and the mounting state of the support member 58 of the inner lid plate 54 with respect to the adjusting portion 75 is the upper and lower insertion edges 62a, Since 62b is inserted into the insertion groove 77 in a state of sandwiching the three support edges 76, the reliability and support strength of the support of the inner lid plate 54 can be significantly enhanced.

The floor inspection port 80 shown in FIG. 7 is almost the same as the inspection port 65, and the inner frame member 82 of the inner frame member 81 has a cross-sectional shape 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
A ridge 85 is projected upward at the outer end of the vertical wall 8
An inner decorative edge 86 is formed at the upper end of the inner decorative edge 8
6, a part of the inclined surface 71a of the inner decorative edge 71 is cut, the stopper edge 53 is also omitted, and the upper surface side is formed substantially flat, and the outer side is a ridge that faces the ridge 85 of the support edge 84. 87 is formed and a groove 88 is formed between the ridges 85 and 87, and the inner decorative edge 86 is the support edge 8
4 is formed in a thick cross section. In addition, the support edge 84 and the inner decorative edge 86 on the inner surface of the vertical wall 83.
A plate thickness adjusting portion 89 having a plurality of insertion grooves 91 is formed between and by a plurality of support edges 90 protruding at a predetermined interval along the longitudinal direction with a predetermined overhanging width.
Further, a supporting member 92 attached to the four peripheral edges of the inner lid plate 54.
The mounting portion 93 is formed into a substantially rectangular tubular shape having a hollow portion 93a, and one piece 95 side of the mounting portion 93 is an insertion portion 94. Above and below the same piece 95, an insertion edge 96a to be inserted into the insertion groove 91 is formed. , 96b are projected. Incidentally, the intervals between the insertion edges 96a and 96b are formed so that the three support edges 90 can be clamped, like the insertion edges 62a and 62b of the support member 58. The inner frame member 81 framed by the inner frame member 82 thus formed is fitted with the inner lid plate 54 having a predetermined plate thickness t, and the supporting member 92 is cut into a predetermined length, Similarly to the above, the upper and lower insertion edges 96a and 96b of the insertion portion 94 of the support member 92 are shown in the two-dot chain line with respect to the insertion groove 91 of the plate thickness adjusting portion 89.
By changing the insertion position, various plate thicknesses of the inner lid plate 54 can be coped with, and the same effect as the inspection port 65 can be obtained, and the adjusting portion of the support member 92 of the inner lid plate 54 can be obtained. Since the adjusting portion 89 is formed in the entire width between the supporting edge 84 and the inner decoration portion 86, the plate thickness range can be widened, and the outer surfaces of the supporting edge 84 and the inner decoration portion 86 are flat. Since it is said that the inner frame 81
It is possible to use the reverse of. Further, since the mounting portion 93 of the support member 92 is formed into a substantially rectangular tubular shape having a hollow portion 93a, deformation and the like are prevented, and the mounting strength and the supporting strength to the inner lid plate 54 can be significantly enhanced.

Since the inner frame members 67, 82 of the inner frame bodies 66, 81 are formed with a plurality of bearing edges 76, 90 at portions substantially corresponding to the entire widths of the vertical walls 68, 83.
When forming the frame, it is difficult to open the locking holes in the vertical walls 68 and 83 in the corner metal fitting 36 having the above-mentioned cut-and-raised piece 39 to form the frame, and therefore, it is shown in FIGS. 8 and 9. Metal fittings that are bent into a substantially L shape
U-shaped concave groove 9 corresponding to the upper and lower edges of the insertion piece 99 of
9a is formed, and as shown in FIG.
The upper and lower ridges 70, 72 and ridges 85, 87 are inserted into the grooves 73, 88 in the groove portions 73, 88 to prevent the retaining grooves 99a from being pulled out by the caulking molding K to form a frame.

Further, FIG. 10 shows another mode of the support edge 56 of the plate thickness adjusting portion 55 formed on the inner frame member 46, for example, the longitudinal length of the lower end surface of each support edge 56a, 56b, 56c. A semi-circular force bone portion 56d is formed along the direction. By inserting the insertion edge 62a or the insertion edge 62b of the insertion portion 60 into each of the insertion grooves 57a, 57b, the attachment force becomes strong, and , This strength part 56
The supporting strength can be improved with d as a fulcrum. In addition, the strength frame portion 56d is the supporting edge 7 of the inner frame members 67 and 82.
6, 90 may be applied.

Further, FIGS. 11 to 13 show inner frame bodies 45,
The detail of the grip 100 attached to the substantially rectangular long hole 54a opened at a predetermined position of the inner cover plate 54 of 66, 82 is shown. This grip 100 is a rotary grip,
As shown in FIGS. 11 and 12, the mounting body 101 comprises a grip body 107 and a grip body 107. The grip body 107 is provided at the center of a rectangular flange cover 102 capable of closing the elongated hole 54a.
A substantially rectangular handle hole 103 into which the handle can be fitted is opened, and the flange cover 102 has a lower surface side with an edge portion 104a of the handle hole 103 and elongated holes 54a on both sides of the edge portion 104a.
There are formed edging portions 104b which are fitted into both ends of the edging portion 104, and mounting bosses 105 each having a threaded portion are correspondingly formed in the edging portions 104a. A bracket 106 having a pin hole for pivotally mounting the handle 107 is formed at a predetermined position of the edging portion 104a.

Further, as shown in FIG. 13, the handle body 107 is
On the lower surface side of the lid portion 108 into which the handle hole 103 formed in the flange lid body 102 is fitted so as to be able to close the straight hole portion 109a and the arcuate portion 109b, which are inclined in a deformed U shape at a predetermined angle. The grip portion 109 is formed, and the linear portion 109a is formed with a pivot portion 110 which is fitted between the brackets 106 of the mounting body 101 and pivotally attached to the base portion side. Further, a stopper pin 111 is formed at the lower end of the linear portion 109a so as to extend in the left-right direction so as to be able to abut between the edging portions 104a. In addition, a flange lid is attached to the end of the lid 108 on the side of the linear portion 109a.
A stopper piece 112 is formed which abuts and engages with the lower surface side of 102. The gripping body 107 thus formed is pinned between the brackets 106 of the mounting body 101 via the pivotal joint 110.
It is pivotally connected by 113.

A mounting body having the gripping body 107 mounted in this way
Reference numeral 101 denotes a rimmed portion 104b fitted in the elongated hole 54a of the inner lid plate 54, and a flange lid body on the back side of the elongated hole 54a.
A strip shape slightly larger than 102, and a grip portion 109 of a handle body 107
A holding plate 114 having a long hole 115 through which the insert can be inserted is attached via an attachment boss 105, and the handle 100 is a flange lid body.
The inner cover plate 54 is attached in a sandwiched manner by 102 and a holding plate 114. In this mounted state, the handle body 107 is rotated downward by the weight of the grip portion 109 around the pin 113, whereby the stopper piece 112 is brought into contact with the lower surface of the flange lid body 102, and the lid portion 108 becomes the flange lid body 102. And the handle hole 103 is closed. From this closed state, the handle body 107
In order to pull out, the other end of the lid 108 is pushed up by pressing the end of the lid 108 on the stopper piece 112 side, and the lid 108 is pulled out while holding the same end and pivoting around the pin 113.
Is almost vertical, the stopper pin 111 is
The inner frame bodies 45, 66, 82 can be attached / detached by abutting against the arcuate portion 4 and gripping the arcuate portion 109b in this state.

In the above embodiment, the corner metal fittings 36 and 98 are separately used in the frame of the outer frame body 26 and the inner frame bodies 45, 66 and 81, but the invention is not limited to this, and it is possible to use it. The configuration may be applied by

Next, the case of the ceiling inspection port will be described. FIG. 14 shows a cross-sectional view of the ceiling inspection port 121. The outer frame body 122 is attached to the ceiling opening Wb and is framed in a substantially rectangular shape. And an inner frame body 140 that is attached to the outer frame body 122 so as to be openable and closable in an inner fitting manner.

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, and the outer frame member 123 is formed by extruding an aluminum alloy material or is made of a stainless steel plate or the like. The vertical decoration 124 has a vertical cross-sectional shape with a predetermined height, and the lower end of the vertical wall 124 has an outer edge of the peripheral member 134 of the ceiling opening Wb as a hook to decorate the outer decoration. An edge 125 is formed, and this outer decoration edge 125 is formed with a convex edge 126 protruding inward and an overhanging edge 127 overhanging with a predetermined overhanging width so that it can be decorated outward. Inclined inclined surface 127 a
Further, on the upper surface side of the projecting edge 127, a stopper edge 128 that abuts the peripheral member 134 is provided so as to project along the longitudinal direction. In addition, a locking edge 129 having a substantially hook-shaped cross section is provided on the upper end side of the vertical wall 124 so as to face the stopper edge 128, and a groove portion is provided between the locking edge 129 and the stopper edge 128.
130 have been formed. Outer frame member formed in this way
123 is cut into 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, mutual stopper edge 128 and locking edge 129 are formed. The groove portions 130 are aligned and continuous, and the outer frame body 122 is formed by framing via the corner metal fittings 131 similar to the above.

At a predetermined position near one side of the outer frame member 123 corresponding to one of the outer frame bodies 122 thus framed,
As shown in FIG. 15, a rotary shaft 132 having a flange 133 protruding inward and fitted to the groove 147 of the inner frame 140 so as to be slidably fitted in a groove 147 is attached. The outer frame body 122 framed in this manner is fitted in the ceiling opening Wb in an inner shape, and the outer decorative edge 125 is abuttingly engaged with the lower surface of the peripheral edge of the peripheral member 134 of the opening Wb. It is attached in a suspending manner to the ceiling structural member 136 via a suspending metal fitting 135.

Further, the inner frame body 140 is framed by an inner frame member 141 having the same cross-sectional shape so as to be fitted in the outer frame body 122 inside. The inner frame member 140 is formed by extruding an aluminum alloy material or is made of a stainless steel plate or the like, and its cross-sectional shape is a vertical wall 142 of a predetermined height opposite the vertical wall 124 of the outer frame member 123 and its lower end portion. Is formed with an inner decorative edge 143 having an inclined surface 143a having a substantially symmetrical shape with the outer decorative edge 125 of the vertical frame member 123, and an outer end portion of this inner decorative edge 143 is formed with a protrusion 144 on the upper side and an inner side. A stopper edge 145 of the ceiling lid 149 is also provided on the upper surface. In addition, on the outside of the upper end of the vertical wall 142, there is a ridge formed on the inner decorative edge 143.
A locking edge 146 having a hook-shaped cross section is formed so as to face the groove 144, and a groove 147 is formed between the protrusion 144 and the locking edge 146. Is projected. Further, a plate thickness adjusting portion 150 for dealing with various plate thicknesses t of the ceiling inner cover plate 149 is formed at a predetermined height position inside the vertical wall 142.

The plate thickness adjusting portion 150 is provided with a support member 155 attached to, for example, the upper surface side (rear surface) of the four edges of the ceiling inner cover plate 149 in substantially the same manner as the floor inspection port 25.
The plate thickness t of 9 is dealt with, and there are a plurality of supporting edges 151 extending inward in the longitudinal direction within a predetermined range in the height direction at predetermined intervals (in the case of three in this example, Inserted grooves 152a, 152b are formed between the support edges 151, which are formed as a projection, and into which the insert edges 159a, 159b of the support member 155 can be inserted and supported.

Further, the supporting member 155 attached to the upper surface of the four ceiling inner cover plates 149 is made of an aluminum alloy extruded or made of stainless steel plate or the like, and its sectional shape is along the upper surface of the ceiling inner cover plate 149. A mounting edge 156 having a substantially hook-shaped cross section to be mounted and an insertion portion 157 is formed at an end of the mounting edge 156. The insertion portion 157 is formed by an insertion receiving edge 158 that rises upward in the drawing and the insertion receiving edge 158.
Inserting edges 159a, 159b which can be inserted into the inserting grooves 152a, 152b with a predetermined length are formed on the upper and lower sides of the protruding edge 15a, 159b.
9a and 159b are formed, for example, at intervals such that three support edges 151 can be attached.

The inner frame member 141 thus formed is formed to have a predetermined length, and both ends thereof are formed on the outer frame member 12.
Similar to 3, the butt surfaces are formed by cutting at a predetermined angle, and the upper and lower ridges 144 and the locking edges 146 are aligned and the groove portions 147 are formed by abutting the butt surfaces of the inner frame members 141. And each inner frame member 14
Three bearing edges 151 formed inside 1 are aligned with each other. In addition, the groove 147 at each corner has an outer frame body.
Similar to 123, the inner frame body 140 is formed by being framed in a rectangular shape through the corner metal fitting 131.

Further, the ceiling inner cover plate 149 is a member of the same kind as the peripheral member 134, and is formed in a substantially square shape so that it can be fitted into the inner frame body 140 with a predetermined plate thickness ta, and is fitted into the inner frame body 140. The supporting member 155 attached to the upper surface side of each edge portion of the ceiling inner cover plate 149 is cut into a short dimension of a predetermined length,
The three support edges 151 are fitted in between the upper and lower insertion edges 159a and 159b formed in the insertion portion 157 of the support member 155, and are attached to the upper surface of the ceiling inner lid plate 149 via the attachment edge 156. By attaching with screws, the four peripheral edges of the ceiling inner cover plate 149 are abutted and fixed to the inner decorative edge 143.

The inner frame body 140 thus formed is the outer frame body.
Although not shown, the protrusions 144 and the locking edges 146 of the inner frame member 141 on the side corresponding to the rotary shaft 132 correspond at predetermined positions because they are slid, inverted, and attached / detached via the rotary shaft 132. Are notched and are notched in the groove 147.
The inner frame member 141 is provided so that 133 can be fitted therein.
Although not shown, the vertical wall 142 is provided with a retaining portion for the collar portion 133, which is not shown, for example, in a raised or bulged shape. The inner frame member 141, which is provided with the notch, is provided with three supporting edges at the center of the inner side of the vertical wall 142 of the inner frame member 141 on the side farther from the rotary shaft 132 of the other inner frame member 141. 151
A lock 160 is attached to the upper end of the vertical wall 124 of the outer frame 122 by cutting out a part of the lock.

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 is closed by engaging the lock 160 with the outer frame 122 in a closed state by rotating the same through the rotary shaft 132 so that the ceiling opening Wb can be opened and closed.

As described above, the ceiling inner lid plate 149 having the plate thickness ta is attached to the inner frame body 140 by inserting the upper and lower insertion edges 159a formed in the insertion portion 157 of the support member 155 attached to the upper surface of the four circumferences.
Three support edges 15 formed inside the inner frame member 141 between 159b
Since 1 is inserted in a sandwiched manner and the edge portion of the inner lid plate 149 is sandwiched between the inner lid plate 149 and the inner decorative edge 143, it can be easily attached and installed without any other fastening member. Can be attached and detached easily, and the insertion portion 157
Since the three support rims 151 and the three support edges 151 are fitted together, it is possible to obtain reliable support and secure support strength.

In addition, when the plate thickness ta of the ceiling inner cover plate 149 is changed or when the finish decorative plate is combined with the ceiling inner cover plate 149 and the plate thickness is changed, the floor inspection port 25 is used.
Similarly, according to the changed plate thickness, the insertion position can be changed to the insertion grooves 152a, 152b between the three support edges 151 of the inner frame member 141 via the upper and lower insertion edges 159a, 159b of the insertion portion 157. Therefore, various plate thicknesses can be easily dealt with.

Although the supporting members 58, 92, 155 are attached to the four circumferences of the inner cover plate 54 of the floor inspection port 25, 65, 80 and the ceiling inner cover plate 149 of the ceiling inspection port 121 as an example, the present invention is not limited to this. Instead of the above, it may be attached to the corresponding edge portion, and in this case also, the same effect as the above can be obtained.

[0043]

As described above, according to the present invention, the inner lid plate can be easily attached to the inner frame without any fastening member.
Also, it is easy to attach and detach, and by inserting and engaging with the insertion groove between the insertion portion and the plurality of bearing edges, it is possible to obtain reliable support and secure the support strength,
This can be easily dealt with by changing the insertion engagement position. Further, since the mounting edge of the inner lid plate of the support member is formed in a hollow shape or a substantially hook-shaped cross section, its deformation or the like is prevented, and the mounting strength and the supporting strength to the inner lid plate can be significantly increased.

[Brief description of drawings]

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

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

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

FIG. 4 (a) is a sectional view of a corner portion of the outer frame connected by a corner fitting. (b) It is a connection sectional view by a corner metal fitting of a corner portion of the inner frame.

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

FIG. 6 is an explanatory view of attachment adjustment with respect to a plate thickness of an inner lid plate by another inner frame member.

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

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

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

FIG. 10 is a cross-sectional view of another bearing 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 handle mounting body.

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

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

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

FIG. 16 is an explanatory view of adjusting the plate thickness of a conventional inner lid plate.

FIG. 17 is an explanatory view 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 part (mounting edge) 92a Hollow part 62,96 Insertion edge 121 Ceiling inspection port 122 Outer frame body 140 Inner frame body 141 Inner frame member 142 Vertical wall 149 In the ceiling Cover plate 150 Plate thickness adjusting part 151 Bearing edge 155 Bearing member 159 Insert edge

Claims (4)

[Claims] 1. An inspection port in which an inner frame body having an inner lid plate fitted therein is detachably fitted in an outer frame body framed in a rectangular shape, wherein a vertical wall of the inner frame member of the inner frame body is provided. A plate thickness adjusting portion having a plurality of bearing edges provided at predetermined intervals along the longitudinal direction of the inner surface is provided, and the plate thickness adjusting portion extends inwardly with an inserting edge that is removably inserted and engaged. An inspection port characterized in that it is configured to be able to cope with various plate thicknesses of an inner lid plate through a support member having an attachment edge attached to and supporting the lid plate. 2. The mounting of the inner lid plate is such that a supporting member is inserted into and engaged with and supported by at least a plate thickness adjusting portion of the inner frame, or a plate thickness adjusting portion of the entire inner circumference. The inspection port according to claim 1, wherein: 3. The insertion edge of the supporting member is formed at least parallel to the upper and lower sides so as to be removably inserted into and engaged with the plate thickness adjusting portion of the inner frame body. Inspection port of 2. 4. The mounting edge of the support member is formed in a hollow shape or a substantially hook-shaped cross section.
The inspection port according to claim 2 or claim 3.