JPH0528048B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Object of the Invention (1) Industrial Application Field The present invention provides a floor wiring duct device, particularly a wiring duct, which has a substantially U-shaped cross section by connecting the lower portions of a pair of receiving frames with a bottom plate. The invention relates to a type of duct consisting of a duct body formed in a duct body and a lid that covers the open upper surface of the duct body so as to be openable and closable.

(2) Conventional technology Conventionally, a floor panel forming an air space between the supporting legs erected on a base is supported, and a wiring duct is supported on the base adjacent to the floor panel. A structure like this has already been proposed.

(3) Problems to be solved by the invention However, the conventional structure described above is unstable because the floor panel is simply laid on the concrete slab as a base via supporting legs, and the floor may be damaged due to earthquakes, etc. There is a risk that the panel may come off the support legs and cause the equipment to fall.

The present invention has been made in view of the above circumstances, and provides a floor wiring duct device that can firmly connect the duct body and the floor panel, and can also increase the rigidity of the duct body itself. The purpose is to

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a floor panel that forms a space between support legs erected on a base and the base. A wiring duct is mounted on a floor panel, which supports the wiring duct and has a duct body formed into a substantially U-shaped cross section by connecting the lower parts of a pair of receiving frames with a bottom plate, and a lid that covers the open upper surface of the duct body so as to be openable and closable. In the floor wiring duct device supported on the base adjacent to the edge of the duct, the receiving frame integrally connects substantially vertical inner and outer panel portions aligned in the width direction of the duct body and the lower portions of the inner and outer panel portions. A closure having a lower connecting plate portion that connects and has a lower surface superimposed and fixed to a side portion of the bottom plate, and an upper connecting plate portion that integrally connects the upper portions of the inner and outer plate portions and whose upper surface can support the lid. It is considered as a cross-sectional structure,
A support protrusion to which the edge portion of the floor panel is connected is integrally formed on the outer surface of the outer panel portion, and a support bundle whose upper end portion passes through the lower connecting plate portion and the bottom plate side portion is integrally formed on the base. is rotatably erected, and an adjustment support mechanism is provided between the support bundle and the receiving frame to support the bottom surface of the duct body and adjust its support height by rotation of the support bundle, and the upper connection A tool insertion hole that allows insertion of a tool for rotating the upper end of the support bundle and is opened and closed by the lid is formed in the plate portion in correspondence with the support bundle.

(2) Effect Since the floor panel is connected and supported not only by the support legs, which are the original support means, but also by the support bundle of the duct body, the support for the floor panel is stabilized.

In addition, the receiving frames on both sides of the duct body are extremely rigid closed-section structures, with the outer panel serving as a support for the floor panel, the upper connecting plate serving as a lid support, and the lower connecting plate serving as a support for the lid. The support bundle receiving function in cooperation with the bottom plate can be shared between the two.

Furthermore, even after the floor panel is set on the support legs, the height of the duct body can be adjusted without being interfered with by the floor panel by inserting a tool into the closed section structure through the tool insertion hole and rotating the support bundle. can be done. Furthermore, since the tool insertion hole is closed at the same time as the open upper surface of the duct body is closed with the lid, there is no risk of dust or the like entering the closed cross-section structure through the hole.

(3) Embodiments Below, embodiments of the present invention will be explained with reference to drawings. First, in FIGS. 1 and 2 showing an embodiment of the present invention, a wiring duct 1 is installed on a base 2 made of slab concrete. A floor panel 3 is placed on the base 2 at a height flush with the upper surface of the wiring duct 1, and a joist support bundle 8, which will be described later, is placed on the base 2.
The floor panel 3 is supported and fixed via the floor panel 1 and the floor joists 80, and an air space is formed between the floor panel 3 and the base 2. On the wiring duct 1 and floor panel 3,
A carpet 4 is laid as a finishing material.

The wiring duct 1 includes a duct main body 5 basically formed in a substantially U-shape, a lid 6 that covers the upper end opening of the duct main body 5 so as to be openable and closable, and a height-adjustable structure on which the duct main body 5 is mounted as a base. 2 and a support bundle 7 for support on the top of the support bundle 7.

Referring also to FIG. 3, the duct main body 5 is formed by connecting the lower parts of a pair of receiving frames 8 with a bottom plate 9, and basically having a substantially U-shaped cross section that opens upward. , both receiving frames 8 are made of aluminum, and the bottom plate 9
is formed from galvanized steel sheet.

Each receiving frame 8 includes a vertical outer panel portion 10 and a vertical outer panel portion 1
0, a vertical inner plate part 11, a horizontal lower connecting part 12 that interconnects the lower parts of the outer plate part 10 and the inner plate part 11, and the upper end of the inner plate part 11 and the lower part of the outer plate part 10. It has a horizontal upper connecting plate part 13 that integrally connects the upper parts to form a sturdy closed cross-section structure.
In addition, a floor panel 3 is provided on the outer surface of the outer panel portion 10.
A support protrusion 14 for receiving the edge of the floor panel 3 is protrudingly provided at a position below the upper end by a thickness d. Further, the side portions of the bottom plate 9 are fixed to the receiving frame 8 so as to overlap below the connecting plate portion 12.

The upper connecting plate portion 13 receives the lid 6 via a rubber receiving member 15;
3, a dovetail groove 16 is bored over the entire length. On the other hand, the receiving member 15 is formed in a shape that can fit into the dovetail groove 16, thereby fixing the receiving member 15 on the upper connecting plate portion 13. Further, a groove 17 is provided on the upper surface of the upper connecting plate portion 13 near the tip thereof over the entire length.

The support bundle 7 includes a bundle seat 19 fixed on the base 2 with an anchor bolt 18, and an adjustment bolt 2 whose lower end is supported by the bundle seat 19 so as to be rotatable around a vertical axis.
0, and a nut 21 which is screwed into the adjustment bolt 20 so as to be movable forward and backward in order to receive the bottom surface of the duct body 5. That is, the bundle seat 19 is constructed by fixing a pair of upper and lower plates to each other, and a locking portion 22 provided at the lower end of an adjustment bolt 20 is engaged and held between the two plates so as to be rotatable around the vertical axis. Ru.

The upper end of the adjustment bolt 20 is connected to the lower connecting plate 12.
and the bolts 20 passing through the sides of the bottom plate 9.
An engagement groove 23 serving as an operating portion is provided at the upper end to engage and operate a tool (not shown) such as a driver for rotating the bolt 20.

Such support bundles 7 are fixedly installed on the base 2 at mutually corresponding positions spaced apart in the longitudinal direction of the duct body 5 in order to support the lower surfaces of both sides of the duct body 5. Moreover, on both sides of the duct body 5, the lower connecting plate portion 12 and the bottom plate 9 of each receiving frame 8 have insertion holes 24, 25 for inserting the adjustment bolts 20.
is provided. In addition, each of the insertion holes 24 and 25 is provided on the lower surface of the bottom plate 9 at a position corresponding to each support bundle 7.
A support substrate 27 having an insertion hole 26 connected to the 26 is fixed, and the adjustment bolt 20 is inserted into the insertion hole 24, 2.
5, 26 and rushes into the duct body 5,
The duct body 5 is supported by the support bundle 7 by receiving the support substrate 27 with the nut 21 .

By rotating the adjustment bolt 20, the nut 21, that is, the height of the duct body 5, can be adjusted. Therefore, the threaded portion of the adjustment bolt 20 and the nut 21 support the bottom surface of the duct body 5 and This constitutes an adjustment support mechanism A of the present invention that can adjust the support height. Further, in order to rotate the adjustment bolt 20, a tool insertion hole 28 is formed in the upper connecting plate portion 13 of the receiving frame 8 at a portion corresponding to the dovetail groove 16 above the insertion hole 24. Further, the receiving member 15 fitted in the dovetail groove 16 is also provided with an adjustment hole 29 that is connected to the tool insertion hole 28 .

The lid 6 is formed in a rectangular shape, and is placed on the receiving member 15 on the upper connecting plate portion 13 of both receiving frames 8 and fitted into the upper end opening of the duct body 5. Moreover, the lid 6 is attached to the duct main body 5 by a plurality of screw members 30 screwed into the grooves 17 of the upper connecting plate portion 13.
It is removably fixed to the In its fixed state, the lid 6
The upper surface is flush with the upper surfaces of both receiving frames 8, and the openings of the tool insertion hole 28 and adjustment hole 29 can be closed from above.

Two separators 33 and 34 projecting upward are fixed to the bottom plate 9 along its entire length at positions spaced apart from each other in the width direction. One separator 33
A first signal line passageway 35 for accommodating a signal line, for example, is defined between the receiving frame 8 and one receiving frame 8;
A second signal line passageway 3 for accommodating other signal lines, such as telephone lines, is provided between the separators 33 and 34.
6 is defined. Moreover, each separator 33, 34
A plurality of elastic sound deadening materials 37 that can come into contact with the lower surface of the lid 6 are attached at intervals in the longitudinal direction at the upper end, and these sound deadening materials 37 allow the lid to be easily moved when walking on the lid 6. 6 is prevented from bending downward and directly hitting the upper end of each separator 33, 34,
This prevents the lid 6 from bending and reduces collision noise.

A separator 38 is protruded from the bottom plate 9 between the separator 34 and the other receiving frame 8 , and a power line passageway 39 is defined between the separator 38 and the separator 34 . An auxiliary track 40 is provided between the other receiving frame 8.
is defined. Also, the separator 38 also has a sound deadening material 3.
7 is installed.

The auxiliary line 40 is for connecting and taking out the power line, and the separator 38 is provided with a hole 41 for transferring the power line between the power line passing line 39 and the auxiliary line 40. This hole 4
1 is fitted with a blind protective rubber 42, and when the protective rubber 42 is cut out and the power wire is inserted,
The protective rubber 42 is in close contact with the power line.

In the auxiliary line 40, a movable outlet 43 as a movable wiring device is detachably attached between the separator 38 and the receiving frame 8, and the lid 6 has an opening 44 corresponding to the movable outlet 43. is provided.

Referring to FIGS. 4 and 5 together, the movable outlet 43 includes a support frame 45 and a pair of outlet bodies 46, which serve as appliance bodies, arranged symmetrically.

The support frame 45 is basically formed into a rectangular bottomed cylinder shape with a width that can fit between the upper connecting plate part 13 and the separator 38, and the upper connecting plate part 13 and the separator 38 are formed on the sides thereof. A flange portion 47 that can come into contact with each upper surface of the separator 38 is provided to protrude over the entire circumference. A rubber seal member 48 for receiving the lower surface of the lid 6 is attached to the upper surface of the flange portion 47.

On the other hand, on the upper part of the separator 38, there is a reinforcing line 4.
A bent portion 49 bent toward the zero side is provided, and a locking groove 50 having an upper edge at the same height as the lower edge of this bent portion 49 is provided in the inner plate portion 11 of the receiving frame 8. Attachment flanges 51 are protruded from the sides of both ends of the support frame 45 in the longitudinal direction.
An engagement plate 52 that engages with the upper edge of is fixed by a screw member 53. Therefore, by tightening the screw members 53, the support frame 45 is fixed to the duct body 5.

A pair of outlet ports 54 are provided at the closed end, that is, at the top, of the support frame 45 at intervals in the longitudinal direction.
These outlet ports 54 are formed in a rectangular shape corresponding to the outlet main body 46, and a rubber seal member 55 is adhered to the upper surface of the opening edge. These seal members 55 receive an abutment flange 56 provided at the upper end of the outlet body 46 when the outlet body 46 is stored.

A total of four guide members 57 are fixed to both sides of the support frame 45, one on each side of each outlet 54. These guide members 57 are formed in a substantially U-shaped cross section and open inward.
They extend downward and are fixed to the support frame 45, respectively.

The outlet main body 46 is formed in a rectangular box shape corresponding to the outlet 54, and one end surface 46a thereof
A plug insertion port 64 is provided as a connection terminal connection portion. Rollers 59 are each pivotally supported at the lower portions of the two side surfaces 46b and 46c orthogonal to the side surface 46a, and these rollers 59 are fitted into the guide member 57 so as to roll up and down. .

At the lower part of the remaining side surface 46d of the outlet main body 46, there is a support surface 60 that is inclined inward at an angle of 90 degrees or more with the side surface 46d, and the support surface 60
A notch 62 is provided in the upper part of the support frame 45, which is curved convexly outward from the inner end and includes an arcuate guide surface 61 that protrudes beyond the side surface 46d. Piece 63 is fixed. Furthermore, the side surface 4 provided with a plug insertion port 64
A regulation plate 65 that protrudes on an extension of the support surface 60 is fixed to the lower end of the support surface 6a.

A leaf spring 66 is provided at the lower end of each guide member 57 and comes into contact with the lower end of the outlet main body 46 . These leaf springs 66 are arranged so that the outlet main body 46 connects the abutting collar 56 at the upper end to the sealing member 5.
The guide member 57 is provided so as to exert a spring force that urges the outlet main body 46 upwardly, that is, in the protruding direction when the outlet main body 46 is housed in the support frame 45 in contact with the guide member 57 .

An engagement groove 67 is provided in the upper part of the side surface 46a of the outlet main body 46, and a stopper 68 that can engage with the engagement groove 67 when the outlet main body 46 is stored in the support frame 45 is provided with an engagement groove 67. It is supported on the upper surface of the support frame 45 so as to be rotatable between a state in which it engages with the mating groove 67 and a state in which the engagement is released. The stopper 68 also has an operating portion 69 exposed on the upper surface of the support frame 45, and can be rotated from the outside by engaging a screwdriver or the like with the operating portion 69. Moreover, the stopper 68 can also sandwich the regulating plate 65 between the upper part of the support frame 45 and the stopper 68 .

A connection terminal section (not shown) for making a connection between the power supply line and a contact terminal (not shown) built into the outlet main body 46 is arranged inside the auxiliary line 40 outside the support frame 45.

Referring again to FIG. 1, flat cable outlets 71 and 72 corresponding to the first and second signal line passageways 35 and 36 are provided in the lid 6 at appropriate positions, and flat cable outlets 71 and 72 corresponding to the auxiliary line 40 are provided. A type cable outlet 70 is provided. These flat cable outlets 70, 71, and 72 are open at one side edge along the longitudinal direction of the duct body 5 and are formed long along the longitudinal direction of the lid 6.

In order to convert a round cable into a flat cable, a terminal box 73 is fixed at an appropriate position within each passageway 35, 36 and the auxiliary line 40.
Power supply lines and signal lines, which have been converted from round cables to flat cables by the terminal box 73, are taken out from the respective outlet ports 70, 71, and 72.

In the bottom plate 9 of the duct body 5, each passageway 3
At appropriate positions of 5, 36, and 39, there are knock-out portions 7 that can be easily punched out to form openings 75.
4, and a conduit 76 is provided in the opening 75.
can be connected.

In FIG. 6, a connecting member 77 that can be fitted into the opening 75 of the bottom plate 9 from below is fixed to the end of the electric conduit 76 by a screw member 78. The connecting member 77 is formed in the shape of a bent tube connected to the electric conduit 76 and curved at right angles, and a flange portion 79 that abuts the lower surface of the bottom plate 9 is fixed to the bottom plate 9 with a screw member 97.

The floor panel 3 is placed and fixed on a plurality of joists 80 horizontally arranged above the base 2 at intervals, and each joist 80 is attached to the base 2.
It is supported in a height-adjustable manner by a plurality of joist support bundles 81 as support legs that protrude upward.

Each joist 80 is made of a steel plate and includes a substantially U-shaped main body 82 that opens downward, and support flanges 83 that extend from both ends of the main body 82 in both left and right directions.

The joist support bundle 81 includes a bundle seat 85 fixed to the base 2 with concrete nails 84 or the like, a bolt 86 erected on the bundle seat 85, and a support member 87 screwed into the bolt 86 so as to be able to move forward and backward. and the support member 8
7, and a nut 89 that is screwed onto the bolt 86 to fix the position of the support member 87.

The support member 87 has a substantially U-shaped cross section that is open upward, and the locking member 88 is integrally attached to the inner surface of the support member 87 . The locking member 87 is provided with an insertion groove 90 into which the lower part of the main body 82 in the joist 80 and the support collar 83 can be inserted in the horizontal direction, and the insertion groove 90 of the locking member 88 has a defined height along the bolt 86. The joist 80 is supported by inserting it into the joist.

Joist 80 and floor panel 3 include joist 80
Drill holes 91 at intervals in the longitudinal direction of
are drilled, and a plurality of screw members 92 are inserted into each hole 9.
By screwing into 1, floor panel 3 connects to joist 8.
Fixed above 0.

Moreover, when fixed on the joist 80, the floor panel 3 is flush with the top surface of the wiring duct 1,
The end of the floor panel 3 is received by the support protrusion 14 of the duct body 5. Moreover, the floor panel 3 is screwed and fixed to the support protrusion 14 by screw members 98.

The carpet 4 is laid over the wiring duct 1 and the floor panel 3, and an opening (not shown) is provided in a portion corresponding to the movable outlet 43 to allow the movable outlet 43 to protrude.

Next, the operation of this embodiment will be explained. The wiring duct 1 is laid along the wiring route on the base 2 while adjusting the height from the support bundle 7. Further, on the base 2 between the wiring ducts 1, a plurality of joists 80 are arranged, the height of which is adjusted by a joist support bundle 81, and the wiring ducts 1 are placed on these joists 80.
The floor panel 3 is fixed so as to be flush with the upper surface of the floor panel 3. Therefore, floor panel 3 has joists 8
0 and the joist support bundle 81, it is fixed on the base 2 and also on the duct body 5, and the floor panel 3 and the duct body 5 are firmly integrated, so that earthquakes etc. Even if it gets hot, the floor panel 3 will not fall from above the joist 80.

Furthermore, since the support bundle 7 supports the bottoms of both sides of the duct body 5, the support bundle 7 does not interfere with the facility of the floor panel 3. Further, the adjustment bolt 20 of the support bundle 7 is connected to the auxiliary track 40 on the inner plate portion 11.
Since the adjusting bolt 20 protrudes into the duct main body 5 at a section separated from the adjusting bolt 20, there is no possibility that the power line or the like will be damaged by the adjusting bolt 20.

When the lid 6 is opened, the tool insertion hole 2 provided in the upper connecting plate portion 13 of the receiving frame 8 and the receiving member 15 is opened.
The adjustment bolt 20 can be rotated by inserting a screwdriver etc. from 8 and 29, and the wiring duct 1
The height can be adjusted very easily.

The carpet 4 covers the wiring duct 1 and the floor panel 3, but the power line, telephone line and signal line are connected to the flat cable outlet 7 as flat cables.
0, 71, and 72, and the wiring can be routed to a desired position between the carpet 4 and the floor panel 3. Therefore, the wiring is not exposed on the carpet, and the appearance is improved.

Furthermore, the movable outlet 43 can be switched between a state in which the outlet body 46 protrudes upward from the lid 6 and a state in which it is housed within the duct body 5, so that the aesthetic appearance of the floor is improved when the movable outlet 43 is housed.

By punching out the knock-out portion 74 provided on the bottom plate 9 to form an opening 75, each passageway 35, 3
6, 39 can also be connected to the electric conduit 76.

Since the auxiliary line 40 is separated from the power line passageway 39 via the separator 38, connecting the power line with the auxiliary line 40 eliminates the risk of being shot and also prevents damage to the power line sheathing. can also be prevented.

FIG. 7 shows another embodiment of the present invention, and parts corresponding to those in the previous embodiment are given the same reference numerals. In this embodiment, instead of the carpet 4 of the previous embodiment, antistatic tiles 93 as a finishing material are provided on the floor panel 3 and the lid 6' of the wiring duct 1. Moreover, the antistatic tile 93 is laid flush with the upper surface of the duct body 5 in the wiring duct 1, and the tile 93 on the lid 6' is also laid flush with the upper surface of the duct body 5.

In addition, a width determining plate 31 is provided between each lid 6'.
is passed over. That is, the width determining plate 31 has a pair of engagement protrusions 32 at both ends that engage with the grooves 17 of each receiving frame 8, and the engagement protrusions 32
By engaging with the groove 17 and spanning between both receiving frames 8, it is possible to prevent both receiving frames 8 from falling toward each other or in a direction away from each other. Further, the width determining plate 31 can prevent dust from entering between the lids 6'.

In the above embodiment, the separators 33, 34, 3
Although the sound deadening material 37 was attached to 8, the separator 33,
A shield member that comes into contact with the lower surface of the lid 6 may be attached to the upper ends of the shield members 34 and 38 to provide a shield between the passageways 35, 36 and 39 and to also function as the sound deadening material 37.

Further, the lids 6, 6' may be provided with an outlet for taking out the round cable.

C. Effects of the Invention As described above, according to the present invention, the receiving frame on both sides of the duct main body integrally connects the substantially vertical inner and outer panel parts and the lower part of the inner and outer panel parts, and the lower surface of the duct main body is connected to the lower part of the inner and outer panel parts. A closed cross-section structure having a lower connecting plate portion that is superimposed and fixed to the side portion of the bottom plate, and an upper connecting plate portion that integrally connects the upper portions of the inner and outer plate portions and whose upper surface can support the lid,
A supporting protrusion to which the edge of the floor panel is connected is integrally formed on the outer surface of the outer panel, and a support bundle whose upper end passes through the lower connecting plate and the side of the bottom plate is rotatable on the base. An adjustment support mechanism is provided between the support bundle and the receiving frame to support the bottom surface of the duct body and to adjust the support height by rotating the support bundle. A tool insertion hole that allows the insertion of a tool for rotating the upper end of the support bundle and is opened and closed by the lid is formed corresponding to the support bundle, so that the floor panel can be used as the original support means. It is possible to connect and support not only the support legs but also the support bundle of the duct body, so the support for the floor panel is stable, and there is no risk that the floor panel will shift or come off from the support legs due to earthquakes, etc. That will disappear. In addition, the receiving frames on both sides of the duct body are extremely rigid closed-section structures, with the outer panel serving as a support for the floor panel, the upper connecting plate serving as a lid support, and the lower connecting plate serving as a support for the lid. In addition, since the support bundle receiving function in cooperation with the bottom plate can be shared, each function can be achieved without any problems, and the overall strength of the duct body can also be improved.

Furthermore, even after the floor panel is set on the support legs, if a tool is inserted into the closed section structure through the tool insertion hole and the support bundle is rotated, the height of the duct body can be adjusted without being obstructed by the floor panel. Adjustments can be made accurately. In addition, since the tool insertion hole is closed at the same time as the open upper surface of the duct body is closed with a lid, there is no risk of dust etc. entering the closed section structure through the hole, and a dedicated tool is used to prevent dust from entering. There is no need to provide a special stopper, which contributes to the simplification of the structure.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a vertical cross-sectional view, and FIG. 3 is an enlarged cross-sectional view taken along the - line in FIG. Fourth
The figure is an enlarged view in the direction of the arrow in Figure 1 with the lid omitted.
5 is a sectional view taken along the line -- in FIG. 4, FIG. 6 is an enlarged exploded perspective view showing a conduit, and FIG. 7 is a longitudinal sectional view corresponding to FIG. 2 of another embodiment of the present invention. A... Adjustment support mechanism, 1... Wiring duct, 2...
... Base, 3 ... Floor panel, 5 ... Duct body, 6 ... Lid, 7 ... Support bundle, 8 ... Receiving frame, 9 ...
...Bottom plate, 10... Outer plate part, 11... Inner plate part, 12
...Lower connecting plate part, 13... Upper connecting plate part, 14
... Support protrusion, 28 ... Tool insertion hole, 81 ... Joist support bundle as support leg.

Claims (1)

[Claims] 1 The support legs 81 erected on the base 2 are attached to the base 2.
A duct body 5 is formed with a substantially U-shaped cross section by supporting a floor panel 3 forming a space between the duct body 5 and connecting the lower portions of a pair of receiving frames 8 with a bottom plate 9, and an opening of the duct body 5. In a floor wiring duct device in which a wiring duct 1 having a lid 6 that covers the upper surface so as to be openable and closable is supported on the base 2 adjacent to the edge of the floor panel 3, the receiving frame 8 extends in the width direction of the duct body 5. a lower connecting plate part 12 which integrally connects the lower parts of the inner and outer plate parts 11 and 10 and whose lower surfaces are superimposed and fixed to the sides of the bottom plate 9; and an upper connecting plate part 13 which integrally connects the upper parts of the inner and outer plate parts 11 and 10 and whose upper surface can support the lid 6,
The floor panel 3 is provided on the outer surface of the outer panel portion 10.
A supporting protrusion 14 is integrally formed to which the end edges of the support bundle 7 are connected, and a supporting bundle 7 whose upper end passes through the lower connecting plate part 12 and the side part of the bottom plate 9 is rotatably erected on the base 2. Between this support bundle 7 and receiving frame 8,
An adjustment support mechanism A that supports the bottom surface of the duct body 5 and can adjust its support height by rotation of the support bundle 7 is provided on the upper connecting plate portion 13.
A tool insertion hole 28, which allows the insertion of a tool for rotating the upper end of the support bundle 7 and is opened and closed by the lid 6, is formed corresponding to the support bundle 7. Floor wiring duct equipment.