JP2003120013A - Hanging structure of ceiling inspection port - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably mount an outer frame body to a ceiling backing material by engaging a fixing body with a mounting edge of the ceiling back material without looseness. SOLUTION: The ceiling backing material 5 is provided with a base wall part 6 and a mounting edge 7 projected from the end part of the base wall part 6. A hanging body 51 is formed with an outer frame mounting piece 52 and an extended part 55 extended upward in contact with the base wall part 6 of the ceiling backing material 5. A fixing body 60 is provided with a base part piece 61 fastened to the extended part 55; a projecting piece 64 projecting along the mounting edge 7 of the ceiling backing material 5 from the end part of the base part piece 61; an abutting piece 65 provided in bent shape in contact with the end part of the mounting edge 7 of the ceiling backing material 5 from the end part of the projecting piece 64; and a fixing part 66 projected from the abutting piece 65 so as to be engaged with the mounting edge 7. The projecting dimension L1 of the projecting piece 64 of the fixing body 60 is set smaller by a prescribed dimension L3 than the projecting dimension L2 of the mounting edge 7 of the ceiling backing material 5.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to buildings, ships,
Various wirings that are placed behind the ceiling of structures such as underground passages
The present invention relates to a ceiling inspection port suspension structure for attaching a ceiling inspection port for maintenance and inspection of pipes to a ceiling base material fixed on the back side of the ceiling in a suspended manner in its outer frame.

[0002]

2. Description of the Related Art Conventionally, an outer frame body having an inner frame body which can be opened and closed is hung on a ceiling base material fixed to the ceiling underside through a suspending tool having a suspending body and a fastening body. As a structure for suspending the ceiling inspection port for mounting, for example, the actual opening 62-16
It is disclosed in Japanese Patent No. 5335, Japanese Utility Model Publication No. 48-23431, and the like. In this, as shown in FIG.
The fastening body 160 is attached to the suspension body 151, the lower portion of which is connected to the outer frame body 111, at the base piece 161 thereof.
1 and a nut 172 are tightened so that the height can be adjusted. The fastening body 160 is provided with a projecting piece 164 that projects from the lower end of the base piece 161 along the attachment edge 107 of the ceiling base material 105. Further, at the tip of the overhanging piece 164, the mounting edge 10 of the ceiling base material 105 is attached.
Bending piece 1 bent along the end of 7 in a substantially semi-circular shape
65 is formed. Then, the arcuate bent piece 165 is engaged with the mounting edge 107 of the ceiling base material 105, and the fastening body 160 is fastened to the hanging body 151 by the tightening bolt 171 and the nut 172.
Is attached to the ceiling base material 105 in a suspended manner.

[0003]

By the way, in the above-mentioned conventional ceiling inspection port suspension structure, the mounting edge of the ceiling base material 105 is affected by variations in the bending process of the arc-shaped bending piece 165 of the fastening body 160. 10 to 16
A gap may be generated between the arc-shaped bent piece 165 of 0. Then, the ceiling base material 1 corresponding to the gap 1
The arcuate bending piece 165 of the fastening body 160 rattles against the mounting edge 107 of 05, and the outer frame body 1 with respect to the ceiling base material 105
There was a problem that the mounting stability of No. 11 deteriorated.

In view of the above-mentioned conventional problems, an object of the present invention is to allow the fastening body to be engaged with the mounting edge of the ceiling base material without rattling, and to stabilize the outer frame body against the ceiling base material. (EN) A hanging structure for a ceiling inspection port that can be mounted well.

[0005]

In order to achieve the above object, the ceiling inspection port suspension structure according to the first aspect of the present invention has a structure as set forth in claim 1. Therefore, in a state where the suspension body is attached to the outer frame member at a predetermined position with the outer frame attachment piece, the extension portion of the suspension body is made to follow the base wall portion of the ceiling base material. After that, the height of the fastening body is adjusted to the extending portion of the hanging body, and the fastening portion of the fastening body is engaged with the mounting edge of the ceiling base material. Then, by fastening the fastening body to the suspension body with the fastener, the outer frame body is mounted in a suspended state on the ceiling base material. The projecting dimension L1 of the projecting piece of the fastening body is set smaller than the projecting dimension L2 of the mounting edge of the ceiling base material by a predetermined dimension L3, and the predetermined dimension L3.
A gap is provided between the extending portion of the hanging body and the base piece of the fastening body by an amount corresponding to. Therefore, the abutting piece of the fastening body is brought into tight contact with the tip of the mounting edge of the ceiling base material without a gap, and the fastening portion is reliably engaged (fastened) with the mounting edge of the ceiling base material without defective engagement. Can be made. As a result, the outer frame can be stably attached to the mounting edge of the ceiling base material without rattling. Further, in the overhanging dimension L1 of the overhanging piece of the fastening body, even if there is some variation due to bending of the fastening body or the like, the variation between the extending portion of the hanging body and the base piece of the fastening body is caused. It can be absorbed in the gap between. For this reason, it is possible to eliminate a problem caused by manufacturing variations due to bending of the fastening body.

Further, the suspension structure for the ceiling inspection port according to the second aspect of the invention has a structure as set forth in claim 2.
Therefore, a pair of upper and lower fastening bodies can be engaged with and firmly attached to the upper and lower attachment edges of the ceiling base material, and the outer frame body can be attached more stably in a hanging shape.

A suspension structure for a ceiling inspection port according to a third aspect of the present invention has a structure as set forth in claim 3, wherein a part of the abutment piece of the fastening body projects in a cut-and-raised shape. As a result, the fastening portion is formed. Therefore, the fastening portion can be formed more accurately than in the case where the fastening portion is formed by bending the end portion of the contact piece. As a result, the fastening portion can be more reliably engaged with the mounting edge of the ceiling base material.

The structure for suspending a ceiling inspection port according to a fourth aspect of the present invention has a structure as set forth in claim 4, wherein the fastening portion of the fastening body has a mounting edge of a ceiling base material. A slanted guide surface that can slide along the end of is formed. Therefore, by sliding the slanted guide surface of the fastening portion along the end of the mounting edge of the ceiling base material, the fastening portion of the fastening body can be easily and surely attached to the mounting edge of the ceiling base material. Can be engaged and has excellent workability.

A suspension structure for a ceiling inspection port according to a fifth aspect of the present invention has a structure as set forth in claim 5, wherein the base piece of the fastening body is engaged with the suspension body. A detent portion that forms a detent for the fastening body is formed. Therefore, when the fastening body is fastened to the extending portion of the hanging body with the fastening tool, it is possible to prevent a problem that the fastening body is unexpectedly rotated, and it is possible to improve the fastening work.

A suspension structure for a ceiling inspection port according to a sixth aspect of the invention has a structure as set forth in claim 6, wherein the tightening tool includes a tightening bolt and a nut, and the tightening bolt includes a tightening bolt. Is integrally fixed to the base piece of the fastening body by caulking, welding, etc., while the extension portion of the suspension body has a long hole shape into which the tightening bolt is vertically movably adjustable. The adjustment hole is formed. Therefore, when the tightening bolt is inserted into the elongated hole-shaped adjustment hole of the extending portion of the hanging body and the fastening body is tightened with the fastening bolt and the nut so that the height can be adjusted, the fastening body and the fastening bolt are It is possible to eliminate the trouble of handling each separately. This makes it possible to prevent the tightening bolt from being lost, and facilitate the work of tightening the fastening body to the extending portion of the hanging body.

A suspending structure for a ceiling inspection port according to a seventh aspect of the invention has a structure as set forth in claim 7, wherein a lower portion of the suspending body is provided along a base wall portion of an outer frame body. And an outer frame mounting piece is formed, and the outer frame mounting piece is formed with a threaded portion into which a mounting screw is screwed through the base wall portion of the outer frame body. Therefore, it is possible to save the labor of forming the through hole corresponding to the mounting screw in the outer frame mounting piece of the hanging body and welding the nut to the position corresponding to the through hole.

A suspension structure for a ceiling inspection port according to an eighth aspect of the invention has a structure as set forth in claim 8, wherein the lower portion of the suspension body is located above the base wall portion of the outer frame body. A step portion bent in a step shape is formed along the edge, and an outer frame attachment piece that is downwardly formed along the base wall portion of the outer frame body is formed at the tip of the step portion. The outer frame mounting piece is formed with a screwed portion into which a mounting screw is screwed through the base wall portion of the outer frame body. Therefore, when attaching the hanging body to the base wall portion of the outer frame member, the step portion of the hanging body is brought into contact with the upper edge of the base wall portion, whereby the hanging body can be positioned in the vertical direction. Therefore, the work of screwing the mounting screw through the base wall portion of the outer frame into the screwed portion of the outer frame mounting piece becomes easy. Further, the strength of the suspension itself is increased by the stepped portion of the suspension, and the mounting stability can be improved.

A suspension structure for a ceiling inspection port according to a ninth aspect of the invention has a structure as set forth in claim 9, wherein the lower portion of the suspension body is located above the base wall portion of the outer frame body. An outer frame mounting piece bent along the projecting edge is formed, and a screwing portion into which a mounting screw is screwed is formed in the outer frame mounting piece through the upper projecting edge of the base wall portion of the outer frame body. . Therefore, the outer frame attachment piece on the lower part of the hanging body can be stably attached by the attachment screw in a state where the outer frame attachment piece is hooked on the lower surface of the protruding edge of the base wall portion of the outer frame body.

A suspension structure for a ceiling inspection port according to a tenth aspect of the present invention has a structure as set forth in claim 10, wherein a lower portion of the suspension body is provided along a base wall portion of an outer frame body. And an outer frame mounting piece is formed. The outer frame mounting piece is formed with a locking piece that is inserted into and engaged with a locking hole formed in the base wall portion. Therefore, by inserting and engaging the locking piece of the outer frame mounting piece of the suspension body into the locking hole of the base wall portion of the outer frame member,
The hanging body can be easily attached to the outer frame member, and the attachability can be improved.

The suspension structure for the ceiling inspection port according to the eleventh aspect of the present invention has a structure as set forth in claim 11, and the lower portion of the suspension body is provided along the base wall portion of the outer frame body. Outer frame attachment pieces are formed, and the outer frame attachment pieces are formed with upper and lower locking pieces that are inserted into and engaged with the upper and lower engagement edges formed on the base wall portion of the outer frame body. Therefore, by inserting and engaging the upper and lower engagement edges of the outer frame attachment piece of the suspension body with the upper and lower engagement edges of the base wall portion of the outer frame material, the suspension body can be easily and easily attached to the outer frame material. It can be firmly attached, and the attachability can be improved.

A suspension structure for a ceiling inspection port according to a twelfth aspect of the present invention has a structure as set forth in claim 12, wherein the lower portion of the suspension body is located above the base wall portion of the outer frame body. An outer frame mounting piece bent along the projecting edge is formed, and the tip of the outer frame mounting piece is inserted into a locking hole formed in the upper projecting edge of the base wall portion of the outer frame and engaged. A mating locking piece is formed. Therefore, by inserting and engaging the locking piece of the outer frame mounting piece of the suspension body with the locking hole of the overhanging edge of the base wall portion of the outer frame material, the suspension body can be easily attached to the outer frame material. It can be attached, and the attachability can be improved.

[0017]

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. In FIG. 4 in which the ceiling inspection port is shown in a plane and in FIG. 3 in which the section is taken along the line III-III in FIG. 4, the ceiling inspection port 10 attached to the opening 2 opened in the ceiling board 1 is Frame 11
And an inner frame body 20 that is attached to the opening of the outer frame body 11 so as to be openable and closable by a rotating shaft 40. In addition, for convenience of description, the center side of the opening 2 of the ceiling plate 1 is
The opposite side will be described as the outside.

The outer frame body 11 has a rectangular frame structure in which vertical and horizontal outer frame members 12 are connected by outer frame corner tools (not shown). These vertical and horizontal outer frame members 12
Are formed to have substantially the same cross-sectional shape by using an extruded material of a light alloy such as an aluminum alloy or a bent material of a metal plate such as a stainless steel plate. As shown in FIGS. 1 and 2, each outer frame member 12 includes a base wall portion 13 extending vertically along the inner peripheral surface of the opening 2 of the ceiling plate 1, and a lower end of the base wall portion 13. And an outer projecting edge 14 projecting toward the lower surface of the ceiling plate 1 from each other, and is formed in a substantially L-shaped cross section.

As shown in FIGS. 3 and 4, the inner frame body 20 is removably mounted on the frame opening of the outer frame body 11 by a pair of rotating shafts 40, and the inner frame body 20 is closed by a locking member 80. Is held in a state. The inner frame body 20 has a rectangular frame structure in which vertical and horizontal inner frame members 21 are connected by inner frame corner tools (not shown). Each of the vertical and horizontal inner frame members 21 is formed to have substantially the same cross-sectional shape by an extruded material of a light alloy such as an aluminum alloy or a bent material of a metal plate such as a stainless steel plate. As shown in FIGS. 1 and 2, each inner frame member 21 of the inner frame body 20 includes a base wall portion 22 that is substantially parallel to the inside of the base wall portion 13 of each outer frame member 12 with a predetermined gap, and a base wall portion 22 thereof. An inner projecting edge 24 that projects inward from the lower end of the wall portion 22 is formed into a substantially L-shaped cross section. In addition, a protruding edge 23 having a substantially hook-shaped cross section and facing each other is formed at a position approximately at an intermediate height from the lower end portion of the outer surface of the base wall portion 22 of each inner frame member 21.
Thus, an L-shaped wing piece of an inner frame corner tool (not shown) and a fitting groove into which the head 41 of the rotary shaft 40 is fitted are formed.

As shown in FIG. 3, an inner lid plate 30 is installed on each of the ledges 24 of the inner frame body 20, and the inner lid plate 30 is provided.
Are supported by a required number of cover plate pressing members 31. The cover plate pressing member 31 is provided on the base wall portion 22 of the inner frame body 20.
The mounting piece 32 is mounted along the inner surface of the mounting piece 32, and the supporting piece 33 extends inward from the lower end of the mounting piece 32, and has a substantially L-shaped cross section. Further, in order to be able to correspond to various inner lid plates 30 having different thickness dimensions,
The lid plate pressing member 3 is provided along the inner surface of the base wall portion 22 of the inner frame body 20.
1 is attached so as to be vertically movable.

As shown in FIGS. 1 and 3, a rotary shaft 40 is caulked at the tip of its shaft 42 at the lower part of the outer surface of the outer frame member 12 facing one end of the outer frame 11 near one end. Attached by section 44. On the other hand, the inner frame body 20 has the rotating shaft 4 with the head portion 41 of the rotating shaft 40 fitted in the fitting groove between the projecting edges 23 of the inner frame member 21 facing each other.
It is mounted so that it can be opened and closed centered around 0. An opening 25 into which the rotary shaft 40 can be inserted / removed is formed in a notch shape in a part of the upper protruding edge 23 of the both protruding edges 23 of the inner frame member 21 (see FIG. 3). ).

As shown in FIGS. 2 and 4, the outer frame 1
A locking device for releasably locking the inner frame body 20 in a closed state is mounted between the inner frame body 1 and the inner frame body 20. This locking device is mainly composed of a locking member 80. The locking member 80 is attached to the outer surface of the base wall portion 13 of the outer frame member 12 via the lock bracket 90. That is, the locking member 80 includes the vertical shaft body 81 and the locking plate 8
And 5 are integrally provided. Then, the locking member 80 is
The shaft body 81 is rotatably fitted and assembled to the bearing portion of the lock bracket 90 having a plane cross section of approximately Ω. The locking plate 85 of the locking member 80 is located above the bearing portion of the lock bracket 90 and is fixed to the upper end of the shaft body 81 by the caulking portion 82 in a substantially horizontal shape.
A position at which the tip of the locking plate 85 is removably inserted into a closing hole 95 penetrating the base wall portion 22 of the inner frame member 21 through a through hole penetrating the base wall portion 13 of the outer frame member 12. Has been extended to. When the locking plate 85 is integrally rotated with the shaft 81 and is rotated, the locking plate is inserted into the closing hole 95 of the inner frame member 21 and engaged therewith, and approximately 90 degrees from the locking position. The arrangement is switched to an unlocked position in which it is rotated and slips out of the closing hole 95 of the inner frame member 21. Further, the lower end portion of the shaft body 81 of the locking member 80 penetrates the outer extending edge 14 of the outer frame member 12, and the outer extending edge 14
Slightly protrudes from the lower surface of the. On the lower end surface of the shaft body 81, a rotation groove 83 into which a coin or the like for rotating the locking plate 85 together with the shaft body 81 is inserted is provided.

As shown in FIGS. 1 to 4, above the ceiling plate 1 (on the back side), the field edges 3 are arranged in a substantially parallel shape while being supported by a field edge receiving member 4 having a channel-shaped cross section. Has been done. Further, a ceiling base material 5 is arranged in a substantially parallel shape along the vicinity of the opening 2 of the ceiling plate 1 so as to extend over the field edge receiving member 4. As shown in FIG. 1, the ceiling base material 5 includes a base wall portion 6 in a vertical direction, an upper mounting edge 7 that extends substantially horizontally from an upper edge of the base wall portion 6, and a base wall portion 6. And a lower mounting edge 8 that extends from the lower edge in a substantially horizontal shape, and has a substantially U-shaped cross section. Then, the outer frame body 11 is fitted into the opening 2 from below the ceiling plate 1, and the ceiling base material 5 is inserted through the hanging tool 50 including the hanging body 51 and the fastening body 60.
It is designed to be installed in a hanging shape. It should be noted that the field edge receiving member 4 has substantially the same cross-sectional shape as that of the ceiling base material 5, that is, the base wall portion in the vertical direction, and the upper and lower portions that extend substantially horizontally from the upper and lower edges of the base wall portion. When the cross-section is formed in a substantially U-shape, the field edge receiving member 4 is used as a ceiling base material, and the outer frame body 11 is hung in the field edge receiving member 4. It is also possible to wear it.
It is also possible to dispose another ceiling base material having substantially the same cross-sectional shape as the ceiling base material 5 on the ceiling base material 5, and to attach the outer frame 11 to the ceiling base material in a suspended manner. It is possible. Furthermore, it is also possible to dispose a plurality of different ceiling base materials having substantially the same cross-sectional shape on the ceiling base material 5 and to attach the outer frame 11 to the arbitrary ceiling base material in a suspended manner. Is. In the first embodiment, for example, as shown in FIG. 4, a suspension body 51 and a fastening body 60 are provided at a total of four locations, that is, the portions of the outer frame member 12 facing each other on one side of the outer frame body 12 on both sides. Although the case where the hanging tool 50 is provided is illustrated, the number of the hanging tool 50 to be provided may be appropriately set in consideration of the size and weight of the outer frame body 11.

As shown in FIGS. 1 and 5, the hanging body 51 is
An iron plate, a stainless steel plate, a metal plate such as an aluminum alloy plate, an extruded mold material such as an aluminum alloy, or a synthetic resin or the like is formed into a flat long strip in the vertical direction, and a predetermined length portion below the outer frame mounting piece 52 is formed. A portion extending upward from the outer frame mounting piece 52 is defined as an extending portion 55. A cylindrical threaded portion 52a having a female screw into which the mounting screw 100 is screwed is formed on the inner periphery of the outer frame mounting piece 52 of the hanging body 51 is formed by burring or the like. Then, the mounting screw 100 is screwed into the screw-in portion 52a of the outer frame mounting piece 52 through the mounting hole penetrating the base wall portion 13 of the outer frame member 12, so that the outer frame member facing one side of the outer frame body 11 is screwed. 1
The hanging body 51 is attached to four places of 2. The extending portion 55 extending upward from the outer frame attachment piece 52 of the hanging body 51 is in contact with the base wall portion 6 of the ceiling base material 5 and extends upward by a predetermined length. The extending portion 55 is provided with a vertically elongated adjustment hole 56 as height adjusting means.

As shown in FIGS. 1 and 5, the extending portion 55 of the hanging body 51 is provided with a fixing body 60 by means of an adjusting hole 56 and a fastener.
Is tightened for height adjustment. Further, the tightening tool includes a tightening bolt 71 that is movably fitted and inserted into the adjustment hole 56, and a nut 72 (a wing nut in the first embodiment) corresponding to the tightening bolt 71. As shown in FIGS. 5 to 7, the fastening body 60 is formed by bending a metal plate such as an iron plate, a stainless steel plate, and an aluminum alloy plate having a plate width dimension substantially the same as the plate width dimension of the hanging body 51. Formed, base piece 6
1, the overhanging piece 64, the contact piece 65, and the fastening portion 66 are integrally provided. It is also possible to form the fastening body 60 by an extrusion mold material such as an aluminum alloy.

The base piece 61 of the fastening body 60 is opposed to the extending portion 55 of the suspension body 51, and a mounting hole 62 is formed at a substantially central portion thereof. Then, as shown in FIG. 6, the base piece 6
The fastening bolt 71 is inserted into the mounting hole 62 of No. 1 from one side of the base piece 61, and the fastening bolt 71 is caulked 75.
-It is integrally fixed to the base piece 61 by welding or the like.
In the first embodiment, in the state where the head of the tightening bolt 71 is inserted into the mounting hole 62 up to a position where it comes into contact with one side surface of the base piece 61, the peripheral edge of the mounting hole 62 on the opposite side of the base piece 61. The fastening bolts 71 are fixed to the base piece 61 by crimping a ring or a plurality of points along the base piece 61. Further, a detent portion 63 that is fitted (engaged) with the adjustment hole 56 and serves as a detent for the fastening body 60 is integrally formed at the central portion in the width direction of the upper end portion of the base piece 61 of the fastening body 60. Has been done.

The end (lower end) of the base piece 61 of the fastening body 60
A bulging piece 64 that is bulged substantially horizontally along the upper surface of the mounting edge 7 on the upper side of the ceiling base material 5 is bent. Further, an abutting piece 65 is bent at a substantially right angle to the tip of the overhanging piece 64 in contact with the tip of the upper mounting edge 7 of the ceiling base material 5. The contact piece 65 has a fastening portion 66 that can be engaged with the lower surface of the upper mounting edge 7 of the ceiling base material 5.
Is projected. In the first embodiment, the fastening portion 66 is formed by protruding the lower central portion of the contact piece 65 in a cut-and-raised shape. Also, as shown in FIG.
The fastening portion 66 of the fastening body 60 is formed in a planar shape into a substantially semi-circular shape, a curved shape, a U shape, a V shape, a trapezoidal shape or the like. Further, as shown in FIG. 6, the attachment edge 7 of the ceiling base material 5 is formed by the overhanging piece 64, the contact piece 65 and the fastening portion 66 of the fastening body 60.
Is formed with an insertion groove 68 into which the insertion groove 6 can be inserted.
8 is formed on one side surface (upper surface in FIG. 6) of the fastening portion 66 forming one side wall 8 of the fastening portion 66, which is slidable along the tip of the upper mounting edge 7 of the ceiling base material 5. Has been done.
The insertion groove 68 is wide on the opening side located on the tip side of the fastening portion 66, and the groove bottom dimension on the inner side is substantially the same as the plate thickness dimension of the mounting edge 7 and narrows.

As shown in FIGS. 1 and 6, the overhanging dimension L1 of the overhanging piece 64 of the fastening body 60 (the distance dimension from the root of the overhanging piece 64 to the contact piece 65 at the tip) is the ceiling base material. It is set to be smaller than the projecting dimension L2 of the mounting edges 7 and 8 of 5 by a predetermined dimension L3. Then, the fastening body 60 is inserted into the insertion groove 6
8, the contact piece 65 is inserted to a position where it comes into contact with the tip of the mounting edge 7 of the ceiling base material 5, and the fastening body 71 is fixed to the extending portion 55 of the suspension body 51 by the tightening bolt 71 and the nut 72.
When the base piece 61 of the suspension body 51 is in the tightened state, the extension portion 5 of the hanging body 51 by an amount corresponding to the predetermined dimension L3.
A gap is provided between the 5 and the base piece 61 of the fastening body 60.

The suspension structure of the ceiling inspection port 10 according to the first embodiment is constructed as described above. Therefore, when the outer frame body 11 is mounted in a suspended manner on the ceiling base material 5 via the suspending tool 50 including the suspending body 51 and the fastening body 60,
First, a predetermined position of the outer frame body 11 (on the other hand, the outer frame member 1 facing each other)
Attach the hanging body 51 to the two positions (4 locations near both ends). That is, the mounting screw 100 is screwed into the screw-in portion 52a of the outer frame mounting piece 52 of the suspension body 51 through the mounting hole of the base wall portion 13 of the outer frame member 12 to place the suspension body 51 at a predetermined position of the outer frame body 11. Install. Next, the outer frame body 11 is fitted into the opening 2 from below the ceiling plate 1. Then, the fastening body 60 of each suspension body 51 is engaged with the mounting edge 7 of the ceiling base material 5 and the suspension body 51 is tightened by the tightening bolts 71 and the nuts 72.
By fastening the fastening body 60 to the ceiling base material 5
The outer frame body 11 is mounted in a suspended manner.

As shown in FIGS. 1 and 6, the overhanging dimension L1 of the overhanging piece 64 of the fastening body 60 is set smaller than the overhanging dimension L2 of the mounting edges 7, 8 of the ceiling base material 5 by a predetermined dimension L3. A gap is provided between the extending portion 55 of the hanging body 51 and the base piece 61 of the fastening body 60 by an amount corresponding to the predetermined dimension L3. Therefore, the abutting piece 65 of the fastening body 60 is brought into contact with the tip of the mounting edge 7 of the ceiling base material 5 without a gap so that the fastening portion 66 is securely engaged with the mounting edge 7 of the ceiling base material 5 without any defective engagement. Can be engaged with. As a result, the outer frame body 11 can be stably attached to the mounting edge 7 of the ceiling base material 5 without rattling. Further, in the overhanging dimension L1 of the overhanging piece 64 of the fastening body 60, even if there is some variation due to the bending process of the fastening body 60, the variation is the variation in the extension 55 of the hanging body 51 and the fastening body 60. Can be absorbed in the gap between the base piece 61 and the base piece 61. Therefore, it is possible to solve the problem caused by the variation in the bending process of the fastening body 60.

In the first embodiment, the fastening portion 66 is formed by partially protruding the abutting piece 65 of the fastening body 60 in a cut-and-raised shape. Therefore, the contact piece 6
The fastening portion 66 can be formed more accurately than in the case where the end portion 5 is bent to form the fastening portion 66.
As a result, the fastening portion 66 can be more reliably engaged with the mounting edge 7 of the ceiling base material 5. In addition, in the first embodiment, the fastening portion 66 is formed in a substantially semi-arcuate shape, a curved shape, a U shape, a V shape, a trapezoidal shape, etc. in a plan view. For this reason, the fastening portion 66 has a strong structure that is not easily deformed by bending, and a problem due to the bending deformation of the fastening portion 66, for example,
It is possible to prevent the fastening portion 66 from being flexibly deformed and being disengaged from the mounting edge 7 of the ceiling base material 5.

Further, in the first embodiment, the projecting piece 64 of the fastening body 60, the contact piece 65 and the fastening section 66 constitute the insertion groove 68 into which the mounting edge 7 of the ceiling base material 5 can be inserted. To be done. The fixing portion 66 forming one side wall of the insertion groove 68 has an inclined guide surface 67 that is slidable on one side surface along the tip of the upper mounting edge 7 of the ceiling base material 5.
Are formed (see FIG. 6). For this reason, when inserting the insertion groove 68 of the fastening body 60 into the upper mounting edge 7 of the ceiling base material 5 and engaging the fastening portion 66 with the insertion groove 68, the inclined guide surface 67 of the fastening portion 66 is formed. Glide along the tip of the mounting edge 7. As a result, the fastening portion 66 of the fastening body 60 can be easily and surely engaged with the upper mounting edge 7 of the ceiling base material 5, and the workability is excellent.

Further, in the first embodiment, the fastening bolt 71 is inserted from one side of the base piece 61 into the mounting hole 62 of the base piece 61 of the fastening body 60.
The caulking 75 is integrally fixed to the base piece 61 by welding or the like. Therefore, when the fastening body 60 is fastened to the extending portion 55 of the hanging body 51 with the fastening bolt 71 and the nut 72, it is possible to eliminate the trouble of separately handling the fastening body 60 and the fastening bolt 71. it can. This makes it possible to prevent the tightening bolt 71 from being lost, and facilitate the work of tightening the fastening body 60 to the extending portion 55 of the hanging body 51. Further, in the first embodiment, the adjustment piece 56 of the suspension body 51 is fitted (engaged) with the center of the upper end portion of the base piece 61 of the fastening body 60 in the width direction to rotate around the fastening body 60. A detent portion 63 that serves as a stop is integrally formed. For this reason, the fastening body 60 is attached to the extending portion 55 of the hanging body 51.
When the fastening body 60 is fastened by the fastening bolt 71 and the nut 72, it is possible to prevent the problem that the fastening body 60 unexpectedly rotates, and to improve the fastening work.

Further, in the first embodiment, the outer frame mounting piece 52 of the hanging body 51 has a cylindrical shape in which a female screw into which the mounting screw 100 is screwed through the base wall portion 13 of the outer frame member 12 is formed. The threaded portion 52a is formed by burring or the like. Therefore, it is possible to save the labor of forming a through hole corresponding to the mounting screw 100 in the outer frame mounting piece 52 of the hanging body 51 and welding the nut at a position corresponding to the through hole. Further, the present invention may be modified, for example, as in Embodiments 2 to 8 shown in FIGS. 8 to 17, other than the description of Embodiment 1.

(Embodiment 2) Embodiment 2 shown in FIG.
In the above, the outer frame body 11 is mounted in a suspended manner on the ceiling base material 5 fixed to the ceiling underside via the suspending tool 50 including the suspending body 51 and the pair of upper and lower fastening bodies 60. . That is, in the second embodiment, the fastening body 60 having the same structure as that of the first embodiment is turned upside down and engaged with the upper and lower attachment edges 7 and 8 of the ceiling base material 5 to be fitted to the outer frame body 11. It is attached in a hanging shape. Therefore, in the second embodiment, the upper and lower mounting edges 7 and 8 of the ceiling base material 5 are provided.
On the other hand, the pair of upper and lower fastening bodies 60 can be engaged and firmly mounted, and the outer frame body 11 can be mounted more stably in a hanging shape. The other configuration of the second embodiment is similar to that of the first embodiment.
The same reference numerals are given to the same components and the description thereof will be omitted.

(Embodiment 3) Embodiment 3 shown in FIG.
In the lower part of the hanging body 51, a step portion 53 bent in a step shape is formed along the upper edge of the base wall portion 13 of the outer frame member 12 (outer frame body 11), and the step portion is formed. An outer frame attachment piece 52 is formed at one end of 53 along the base wall portion 13 of the outer frame member 12 so as to face downward. The outer frame mounting piece 52 is formed with a cylindrical threaded portion 52a into which the mounting screw 100 is screwed through the base wall portion 13 of the outer frame member 12 by burring. Further, at the other end of the step portion 53, an extending portion 55 extending upward and having an adjusting hole for tightening the fixing body 60 so that the height thereof can be adjusted is formed.
Further, in the third embodiment, the base wall portion 22 of the inner frame body 20 is formed in a stepped cross-sectional shape in which the upper portion 22a is narrow and the lower portion 22b is wide. Then, the inner cover plate 30 is attached to the support piece 33 of the cover plate pressing member 31 by the set screw 80. Therefore, in the third embodiment, the hanging body 5 is attached to the base wall portion 13 of the outer frame member 12 (outer frame body 11).
When attaching 1, the suspension body 51 can be positioned in the vertical direction by bringing the step portion 53 of the suspension body 51 into contact with the upper surface of the base wall portion 13. Therefore, the mounting screw 100 is passed through the base wall portion 13 of the outer frame member 12 to suspend the suspended body 51.
The work of screwing into the screw-in portion 52a of the outer frame mounting piece 52 is easy. Further, the strength of the suspension body 51 itself is increased by the step portion 53 of the suspension body 51, and the mounting stability can be improved. The other structure of the third embodiment is the same as that of the first or second embodiment, and therefore the same components are designated by the same reference numerals and the description thereof is omitted.

(Embodiment 4) Also in Embodiment 4 shown in FIG. 10, the outer frame attachment piece 52 is formed at one end of the stepped portion 53 at the lower portion of the hanging body 51, similarly to Embodiment 3 described above. The extended portion 55 extending upward to the other end of the step portion 53.
Are formed. In addition, in the fourth embodiment,
On the upper edge of the base wall portion 13 of the outer frame member 12 (outer frame body 11), an upper projecting edge 16 that horizontally projects outward is formed. Then, the step portion 53 of the hanging body 51 is provided on the overhanging edge 16.
Are stably abutted and positioned. Therefore, the mounting screw 100 is attached to the base wall portion 1 of the outer frame member 12.
3 through 3 screw-in portion 5 of the outer frame mounting piece 52 of the hanging body 51
The work of screwing into 2a becomes easier. Since the other structure of the fourth embodiment is the same as that of the first to third embodiments, the same components are designated by the same reference numerals and the description thereof will be omitted.

(Fifth Embodiment) In a fifth embodiment shown in FIG. 11, a lower surface of a hanging wall 51 has a lower surface of an overhanging edge 16 of a base wall portion 13 of an outer frame member 12 (outer frame body 11). An outer frame mounting piece 52 bent at a right angle is formed. Then, the tubular screw-in portion 5 into which the mounting screw 100 is screwed into the outer frame mounting piece 52 through the overhanging edge 16 of the base wall portion 13.
2a is formed by burring. Also,
The hanging body 51 has an extending portion 55 that extends upward from one end of the outer frame mounting piece 52. An adjusting hole is formed in the extending portion 55 for tightening the fixing body 60 so that the height thereof can be adjusted. Therefore, the fifth embodiment
In the above, in the state where the lower surface of the overhanging edge 16 of the base wall portion 13 of the outer frame member 12 (outer frame body 11) is hooked on the outer frame mounting piece 52 below the hanging body 51, the mounting screw 100 is used to stably mount the frame. be able to. In FIG. 11, the inner frame corners of the inner frame member 21 of the inner frame body 20 are fitted between the upper and lower projecting edges provided on the outer surface of the upper wall portion 22a of the step-like base wall portion 22. The tool 29 is integrally provided with a rotating shaft 40 that serves as an opening / closing center of the inner frame body 20. On the other hand, on the upper portion of the base wall portion 13 of the outer frame member 12 (outer frame body 11), the head portion 4 of the rotating shaft 40 is provided.
1 and upper and lower projecting edges into which the outer frame corner tool is fitted are provided. The other structure of the fifth embodiment is similar to that of the first to third embodiments, and therefore, the same components are designated by the same reference numerals and the description thereof is omitted.

(Sixth Embodiment) In the sixth embodiment shown in FIGS. 12 and 13, the outer frame member 1 is provided on the lower portion of the hanging body 51.
2 (outer frame body 11) along the base wall portion 13
The outer frame attachment piece 52 is formed with a locking piece 57 in a hook shape that is inserted into and engages with the locking hole 13a formed in the base wall portion 13 of the outer frame member 12. Has been formed. Further, a portion of the hanging body 51 extending upward from the outer frame mounting piece 52 is defined as an extending portion 55, and an adjusting hole 56 is formed in the extending portion 55 for tightening the fastening body 60 in a height adjustable manner. . Therefore, in the sixth embodiment, the outer frame member 12 has a base wall portion 13 having a locking hole 13a in which a locking piece of an outer frame mounting piece 52 of a suspension body 51 is inserted to engage with the outer frame member 12. The hanging body 51 can be easily attached to the material 12, and the attachability can be improved. The other structure of the sixth embodiment is the same as that of the first to third embodiments, and the description thereof is omitted.

(Embodiment 7) In Embodiment 7 shown in FIGS. 14 and 15, the outer frame member 1 is provided on the lower portion of the suspension body 51.
2 (outer frame body 11) along the base wall portion 13
The outer frame mounting piece 52 has upper and lower engaging pieces 57 that are inserted into and engage with the upper and lower engaging edges 17 and 18 formed outside the base wall portion 13 of the outer frame body 11. 58 is formed. Further, the upper locking piece 57 is formed by cutting and raising a part of the outer frame mounting piece 52. Further, the lower locking piece 58 is formed by bending the lower portion of the outer frame mounting piece 52 into an inverted L shape, and one corner or both corners of the lower locking piece 58 has an arc shape. Has been formed. Then, in a state where the hanging body 51 is laid down substantially laterally with respect to the base wall portion 13 of the outer frame body 11, the engaging edge 17 on the base wall portion 13 of the outer frame member 12 is placed on the outer frame mounting piece 52. By inserting and engaging the locking piece 57 and rotating the same about 90 degrees from the starting point to stand up, the hanging body is attached to the upper and lower engaging edges 17 and 18 of the base wall portion 13 of the outer frame member 12. Upper and lower locking pieces 57, 5
8 are adapted to be engaged. Further, a portion extending upward from the outer frame attachment piece 52 of the hanging body 51 is defined as an extension portion 55,
An adjusting hole 56 is formed in the extending portion 55 for tightening the fixing body 60 so that the height thereof can be adjusted. Therefore, in the seventh embodiment, with the suspension body 51 laid sideways, the engagement piece 57 on the outer frame attachment piece 52 is engaged on the base wall portion 13 of the outer frame material 12. The upper and lower locking pieces 57 and 58 of the outer frame mounting piece 52 are made to stand up by rotating the outer frame mounting piece 52 about 90 degrees from the starting point while inserting into the edge 17 and engaging with each other. Upper and lower engaging edges 1
7 and 18 are engaged. As a result, the hanging body 51 can be easily and firmly attached to the outer frame member 12,
It is possible to improve the mountability. The other structure of the seventh embodiment is the same as that of the first to third embodiments, and the description thereof will be omitted.

(Embodiment 8) In the embodiment 8 shown in FIG. 16 and FIG. 17, the upper wall of the base member 13 of the outer frame member 12 (outer frame member 11) is placed on the lower portion of the hanging body 51. An outer frame attachment piece 52 that is bent along the lower surface of the projecting edge 16 is formed. A locking piece 59 is formed at the tip of the outer frame mounting piece 52 so as to be inserted into and engaged with a locking hole 16a formed in the overhanging edge 16 of the base wall portion 13 of the outer frame member 12. . Therefore, in the eighth embodiment, the hanging body 51 is provided in the locking hole 16a of the upper protruding edge 16 of the base wall portion 13 of the outer frame member 12.
By inserting and engaging the locking piece 59 of the outer frame attachment piece 52, the hanging body 51 can be easily attached to the outer frame member 12, and the attachability can be improved. The other structure of the eighth embodiment is the same as that of the first to third embodiments, and the description thereof will be omitted.

The present invention is not limited to the first to eighth embodiments. For example, the field edge receiving member 4 may be a ceiling base material, and the hanging tool 50 may be directly attached to the ceiling base material 4. Further, a plurality of suspending tools 50 may be attached respectively to the ceiling base materials 4 and 5 that intersect vertically, and may be set appropriately according to the arrangement state of the ceiling base material on the back side of the ceiling. In addition, each outer frame member 1 of the outer frame body 11
The cross-sectional shape of 2 and the cross-sectional shape of each inner frame member 21 of the inner frame body 20 may be various cross-sectional shapes. Further, the locking member 80 forming the locking device may be arranged on the inner frame 20 side. In addition, the ceiling plate 1 and the inner lid plate 30 may have a structure in which a plurality of plate materials are stacked, or may have different thickness sizes in various sizes. Alternatively, the inner frame body 20 may be attached to the outer frame body 11 so that the inner frame body 20 can be opened and closed by an opening and closing arm pivotably supported at one end on the outer frame body 11 and the other end on the inner frame body 20. Further, in the hanging body 51, an extension portion 55 of the hanging body 51 is formed into a substantially C-shaped cross section in place of the elongated body-shaped adjusting hole 56 for mounting the fastening body 60 in a height adjustable manner. It is also possible to tighten the fastening body 60 along the groove so that the height can be adjusted. Further, in this case, it is also possible to bend the flat plate material to form the suspension body 51 having a substantially C-shaped cross section. Further, by cutting a part of the rectangular tube material, the suspension body having a substantially C-shaped cross section. It is also possible to form 51. Furthermore, it is also possible to form the hanging body 51 by using an extrusion mold material having a substantially C-shaped cross section.

[0043]

As described above, according to the present invention,
Since the fastening body can be fixed to the mounting edge of the ceiling base material without rattling, the outer frame body can be stably attached to the ceiling base material.

[Brief description of drawings]

FIG. 1 is a sectional view showing a suspended structure of a ceiling inspection port according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a relationship among an outer frame body, an inner frame body and a locking device of the ceiling inspection port.

FIG. 3 is a sectional view of the ceiling inspection port based on the line III-III of FIG.

FIG. 4 is a plan view showing the entire ceiling inspection port.

FIG. 5 is a perspective view showing a state in which the hanging body and the fastening body of the hanging device are separated from each other.

FIG. 6 is a sectional view showing a state in which a fastening bolt is fixed to the base piece of the fastening body by caulking.

FIG. 7 is a bottom view of the fastening portion of the fastening body.

FIG. 8 is a sectional view showing a suspended structure of a ceiling inspection port according to the second embodiment of the present invention.

FIG. 9 is a sectional view showing a suspended structure of a ceiling inspection port according to Embodiment 3 of the present invention.

FIG. 10 is a sectional view showing a suspended structure of a ceiling inspection port according to Embodiment 4 of the present invention.

FIG. 11 is a sectional view showing a suspended structure of a ceiling inspection port according to Embodiment 5 of the present invention.

FIG. 12 is a perspective view showing a suspension body used in the suspension structure for the ceiling inspection port according to the sixth embodiment of the present invention.

FIG. 13 is an explanatory view showing a state in which the outer frame attachment piece of the hanging body is also engaged with the outer frame body.

FIG. 14 is a perspective view showing a suspension body used in the suspension structure for the ceiling inspection port according to the seventh embodiment of the present invention.

FIG. 15 is an explanatory view showing a state in which the outer frame attachment piece of the hanging body is also engaged with the outer frame body.

FIG. 16 is a perspective view showing a suspension body used in a suspension structure for a ceiling inspection port according to Embodiment 8 of the present invention.

FIG. 17 is an explanatory view showing a state in which the outer frame attachment piece of the hanging body is also engaged with the outer frame body.

FIG. 18 is a cross-sectional view showing a conventional suspended structure of a ceiling inspection port.

[Explanation of symbols]

1 ceiling board 2 openings 4 Field edge receiving material (ceiling base material) 5 Ceiling base material 6 Base wall 7,8 Mounting edge 10 Ceiling inspection port 11 Outer frame 12 Outer frame material 13 Base wall 20 Inner frame 21 Inner frame material 22 Base wall 50 hanging equipment 51 hanging body 52 Outer frame mounting piece 55 Extension 56 Adjustment hole 60 fastening body 61 base piece 63 times stop 64 Overhanging piece 65 Abutment piece 66 Fastening part 67 Guide 70 Fastener 71 Tightening bolt 72 nuts

Claims (12)

[Claims] 1. An outer frame body having an inner frame body that can be opened and closed is mounted in a suspended manner on a ceiling base material fixed to the ceiling backside through a suspending tool including a suspending body and a fastening body. For suspending the ceiling inspection port for, the ceiling base material is a base wall portion in the vertical direction, and of the upper and lower end portions of the base wall portion, at least one of the upper and lower ends of the base wall portion is projected substantially horizontally. An attachment edge is provided, and an outer frame attachment piece to be attached to the outer frame body is formed in a lower portion of the suspension body, and an upper portion of the suspension body is in contact with a base wall portion of the ceiling base material and is upward. An extension portion is formed that extends to the base, and the fastening body is a base piece clamped to the extension of the suspension body so that the height can be adjusted by a fastener, and the ceiling base material from the end of the base piece. Of the overhanging piece and the end of the overhanging piece that touches the end of the attaching edge of the ceiling base material. The contact piece provided in a bent shape, and the fastening portion projecting from the contact piece so as to be engageable with the mounting edge, and the overhanging dimension L1 of the overhanging piece of the fastening body is A suspended structure for a ceiling inspection port, which is set smaller than a protruding dimension L2 of a mounting edge of the ceiling base material by a predetermined dimension L3. 2. An outer frame body having an inner frame body that can be opened and closed is suspended from a ceiling base material fixed to the ceiling underside through a suspending tool including a suspending body and a pair of upper and lower fastening bodies. A structure for suspending a ceiling inspection port for mounting, wherein the ceiling base material is a base wall portion in a vertical direction, and both upper and lower attachments protruding substantially horizontally from both upper and lower end portions of the base wall portion. An edge, and an outer frame attachment piece to be attached to the outer frame body is formed in a lower portion of the suspension body, and an upper portion of the suspension body is in contact with a base wall portion of the ceiling base material and upwardly An extending portion is formed to extend, and the pair of fastening members includes a base piece clamped to the extending portion of the suspension body with height adjustable by a fastener, and the ceiling substrate from an end portion of the base piece. Overhanging pieces protruding along both the upper and lower mounting edges of the material and the upper and lower mounting edges of the ceiling base material from the end of the overhanging piece. The fastening body includes: an abutting piece that is provided in a bent shape in contact with an end portion; and a fastening portion that protrudes from the abutting piece so as to engage with upper and lower mounting edges of the ceiling base material. The overhanging structure of the ceiling inspection port is such that the overhanging dimension L1 of the overhanging piece is set to be smaller than the overhanging dimension L2 of the upper and lower mounting edges of the ceiling base material by a predetermined dimension L3. 3. The ceiling inspection port suspension structure according to claim 1 or 2, wherein a part of the abutment piece of the fastening body is projected in a cut-and-raised shape to form the fastening part. Suspended structure for the ceiling inspection port. 4. The ceiling inspection port suspension structure according to any one of claims 1 to 3, wherein the fastening portion of the fastening body extends along an end of a mounting edge of the ceiling base material. Suspended structure of the ceiling inspection port with a slanted guide surface that can be slid. 5. The suspension structure for a ceiling inspection port according to claim 1, wherein the base piece of the fastening body is engaged with the suspension body to secure the suspension body. Suspended structure for the ceiling inspection port with a detent that forms a detent. 6. The suspension structure for a ceiling inspection port according to claim 1, wherein the tightening tool includes a tightening bolt and a nut, and the tightening bolt is a fastening member. It is integrally fixed to the base piece of the body by caulking, welding, etc., while the extension part of the hanging body is formed with a long hole-shaped adjustment hole through which the tightening bolt can be vertically moved and adjusted. Suspended structure for the ceiling inspection port that is used. 7. The suspension structure for a ceiling inspection port according to claim 1, wherein an outer frame attachment piece is provided along a base wall portion of the outer frame body at a lower portion of the suspension body. And the outer frame mounting piece is formed with a threaded portion into which a mounting screw is screwed through the base wall portion of the outer frame body. 8. The suspension structure for a ceiling inspection port according to claim 1, wherein a step is provided at a lower portion of the suspension body along an upper edge of a base wall portion of the outer frame body. A step portion bent in a circular shape is formed, and an outer frame attachment piece is formed at a tip of the step portion so as to face downward along the base wall portion of the outer frame body. The ceiling inspection port suspension structure has a threaded portion into which a mounting screw is screwed through the base wall portion of the outer frame. 9. The suspension structure for a ceiling inspection port according to claim 1, wherein the lower portion of the suspension body is provided along the upper edge of the base wall portion of the outer frame body. A bent outer frame mounting piece is formed, and the outer frame mounting piece is formed with a screw-in portion into which a mounting screw is screwed through the protruding edge of the base wall portion of the outer frame body. Hanging structure. 10. The suspension structure for a ceiling inspection port according to claim 1, wherein an outer frame attachment piece is provided along a base wall portion of the outer frame body at a lower portion of the suspension body. The hanging structure of the ceiling inspection port, wherein the outer frame mounting piece is formed with a locking piece that is inserted into and engaged with a locking hole formed in the base wall portion. 11. The suspension structure for a ceiling inspection port according to claim 1, wherein an outer frame attachment piece is provided at a lower portion of the suspension body along a base wall portion of the outer frame body. The upper frame attachment piece is formed with upper and lower engaging pieces that are inserted into and engage with the upper and lower engaging edges formed on the base wall portion of the outer frame body. Lower structure. 12. The suspension structure for a ceiling inspection port according to claim 1, wherein the lower portion of the suspension body is provided along the upper edge of the base wall portion of the outer frame body. An outer frame attachment piece is formed by bending the outer frame attachment piece, and the outer frame attachment piece is inserted into and engaged with a locking hole formed in an upwardly projecting edge of a base wall portion of the outer frame body at a tip end of the outer frame attachment piece. Suspended structure of the ceiling inspection port with a stop formed.