JPH0154923B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a wiring duct buried in the floor of a building or the like.

(2) Conventional technology Conventionally, there are two types of floor construction methods for burying wiring ducts: a wet construction method and a dry construction method, and wiring ducts are assembled with structures suitable for these construction methods. ing. In other words, in the wet method, after pouring the concrete slab that serves as the foundation,
The duct space is constructed with a formwork for additional cinder injection, and when adding cinder, reinforcing bars are erected and fixed to the cinder, anchors specifically for the duct are welded to the extra reinforcements, and finished with mortar. The formwork was removed and the wiring duct was installed.

Wet construction methods include a method in which the duct frame is fixed to a wooden support plate with screws after the wooden floor is assembled, and a method in which the duct frame is fixed with metal support bundles and then the wooden or steel floor is assembled. However, since the unique properties of wood, such as its elasticity, warping, and twisting, affect the wiring duct when using methods that involve fixing wires to wooden support plates, recently there has been a shift to methods that use metal support bundles. It's coming.

(3) Problems to be solved by the invention In the conventional wet construction method described above, slab concreting, curing, duct space formwork, additional cinder pouring, installation of differential reinforcement, curing, formwork removal, receiving frame installation, mortar finishing, and curing It is necessary to go through each process in sequence, and the work is complicated.

Furthermore, in the conventional dry construction method, even if a construction method using a metal support frame is used, a wiring duct for storing the wiring must be installed separately, and this work is performed on-site, resulting in poor workability.

Furthermore, in both the conventional wet and dry construction methods, the lids are simply laid out along the frame, and since the lids are installed while making minor adjustments on site, there are gaps between the lids and ducts. Dust and the like may enter the interior through the gaps, causing electromagnetic interference, and static electricity generated by walking on the lid may also cause problems. Moreover, since each lid is simply fitted into the frame, it can be easily opened and closed, and there is a possibility that the wiring housed in the duct may be tampered with.

The present invention has been made in view of the above circumstances, and can be applied to both wet and dry construction methods by shortening the work process, prevents dust from entering, eliminates static electricity, and protects storage wiring. To provide a wiring duct whose lid cannot be easily opened and closed.

B. Structure of the Invention (1) Means for Solving the Problems The wiring duct of the present invention is formed into a substantially U-shaped cross section by connecting a pair of side plates each having an inwardly protruding support protrusion with a bottom plate. a duct body; a plurality of mounting brackets fixed to the outer surfaces of the side plates at positions spaced apart from each other in the longitudinal direction; and a plurality of supports each connected to the mounting brackets and whose height is adjustable. a plurality of receiving frames movably attached to the supporting protrusions of the side plates in a longitudinal direction of the side plates; a plurality of connecting plates passed between corresponding receiving frames of the side plates; a temporary fixing member capable of temporarily fixing the receiving frame and the connecting plate; and an engagement piece for engaging the connecting plate to maintain a close state between the connecting plate and each receiving frame; a plurality of lids placed on the support protrusion to cover; each connecting plate being disposed at a position corresponding to a gap between adjacent lids;

(2) Effect In the wet method, the connecting plate and the receiving frame are temporarily fixed with a temporary fixing member, the duct body is supported by a support bundle, and additional cinder is applied to release the temporary fixing made by the temporary fixing member. After that, place the lid on the duct body. In the dry construction method, the duct body is supported by a support bundle, and a lid is placed on top of the duct body. Moreover, each lid is engaged with a connecting plate, and both side plates of the duct body are located at positions corresponding to the gaps between the lids to prevent dust from entering. Further, each lid is electrically connected to the duct body via the connecting plate and the receiving frame.

(3) Embodiment An embodiment of the present invention will be explained below with reference to the drawings. First, in FIG.
The wiring duct 1 houses wiring for connecting to various electronic devices such as computers.

2 to 4, the duct main body 4 of the wiring duct 1 has a substantially U-shaped cross section by connecting the lower ends of a pair of side plates 6, 6, each having a support protrusion 5 projecting inward, with a bottom plate 7. formed into a shape. The side plates 6, 6 and the bottom plate 7 are made of conductive metal and are interconnected to establish electrical connection therebetween.

On the inner surfaces of the side plates 6, 6, a pair of flat support protrusions 5 protruding inwardly at right angles is provided over the entire length. On the upper surface of each support protrusion 5,
A dovetail groove 8 is bored over the entire length of the side plates 6, 6 in the longitudinal direction. Further, a rubber receiving member 9 is placed on the upper surface of each support protrusion 5 near the base, and a dovetail 10 integrally protruded from the lower surface of this receiving member 9 is fitted into the dovetail groove 8. The receiving member 9 is fixed on the support protrusion 5 by this.

Side plates 6, 6 are provided on the lower surface of each supporting protrusion 5 near the free end.
The sliding groove 11 extends in a straight line over the entire length in the longitudinal direction.
are provided respectively.

Further, a plurality of metal fittings 12 are attached to the outer surfaces of the side plates 6, 6 with bolts 13. Moreover, these mounting fittings 12 are arranged at mutually corresponding positions along the longitudinal direction of both side plates 6, 6. These mounting brackets 12 are provided with support portions 14 protruding outward, and the support portions 14 and
A bolt 17 of a metal support bundle 16 is screwed into a support fitting 15 that abuts the lower surface of the support portion 14 .

The support bundle 16 has a support plate 19 fixed to the concrete slab 2 (see FIG. 1) with bolts 18.
In addition, the bolt 17 extending vertically is supported by a rotating member. That is, the support plate 19 is constructed by fixing a pair of upper and lower plates with a space between them,
The bolt 17 is erected on the support plate 19 with its head supported by a rotating member within the support plate 19. Furthermore, an engagement groove 20 in the shape of a cross, for example, is provided at the upper end of the bolt 17 to engage a driver (not shown) for rotating the bolt 17.

One end of a support plate 21 that contacts the lower surface of the bottom plate 7 is fixed to the support fitting 15.
The other end is fixed to another support fitting 15 at a corresponding position. Therefore, when the bolt 17 is screwed into the support part 14 of the mounting bracket 12 and the support bracket 15, the mounting bracket 12 and the support bracket 15 cannot rotate, and by rotating the bolt 17, the mounting bracket 12 And the support fitting 15, that is, the duct body 4 is displaced upward and downward.

Receiving frames 22 are attached to the support protrusions 5 of the side plates 6, 6 at a plurality of positions spaced apart in the longitudinal direction. Each receiving frame 22 is formed by bending a rectangular conductive metal plate, and has a protrusion 23 at one end that fits into the sliding groove 11 of the support protrusion 5, and a protrusion that abuts the free end surface of the support protrusion 5. 24 is provided protrudingly. These protrusions 23 and 24 are fitted into the free end of the support protrusion 5, so that the receiving frame 22 is fitted onto the support protrusion 5.
mounted on. Moreover, each receiving frame 22 and the supporting protrusion 5
The fitted state with the receiving frame 22 is determined so that the receiving frame 22 can move along the sliding groove 11, and the receiving frame 22 will not fall even if the receiving frame 22 is released from the fitted state.

A connecting plate 25 made of conductive metal is spanned between a pair of supporting frames 22, 22 which are attached to the supporting protrusions 5 of the side plates 6, 6 and correspond to each other. Both ends of the connecting plate 25 are brought into contact with the lower surfaces of both receiving frames 22, 22, and are temporarily fixed to both receiving frames 22, 22 by temporary fixing members 26 when cinder is added.

The temporary fixing member 26 is formed into a rectangular flat plate shape, and has a receiving frame 22 and a connecting plate 2 on both sides of one end thereof.
A pair of holding portions 27, 27 are integrally provided, which are bent downward to hold 5. Further, at the other end of the temporary fixing member 26, there is a slope 2 that slopes upward.
8 is provided.

Such a temporary fixing member 26 has a holding portion 27,
27 holds the ends of the receiving frame 22 and the connecting plate 25, and the receiving member 9 is placed on the receiving frame 22 so that the inclined portion 28 rides on the side edge of the receiving member 9.
As the inclined portion 28 rides on the side edge of the receiving member 9, the temporary fixing member 26 pushes up the end of the connecting plate 25 with its holding portions 27, 27. Therefore, the end of the connecting plate 25 is firmly pressed against the receiving frame 22,
The connecting plate 25 and the receiving frame 22 are connected.

This temporary fixing member 26 is attached to the receiving frame 22 and the connecting plate 25 in order to prevent the side plates 6, 6 from falling inward when adding cinder around the duct body 4.
This is for temporarily fixing the cinder bolts, and will become unnecessary after the additional cinder work is completed.

In FIG. 5, a lid 29 for closing the upper open end of the duct body 4 is formed in a rectangular shape with a width corresponding to the distance between the inner surfaces of the side plates 6, 6, and has at least its frame. 29a is made of conductive metal. Each lid 29 is fitted into the upper part of the duct body 4 so as to be placed on the receiving member 9 on the support protrusion 5 on the side plates 6, 6. Moreover, each receiving frame 22 is attached to the supporting protrusion 5 at a position corresponding to between the two adjacent lids 29, 29. In order to connect each receiving frame 22 and the connecting plate 25, each lid 29 is provided with a pair of engaging pieces 30 that abut and engage with the lower surface of the connecting plate 25.
9 is inserted into the duct body 4, the connecting plate 25 is pressed upward by the engaging piece 30, and both ends of the connecting plate 25 come into close contact with the lower surfaces of both receiving frames 22, 22.

Since each lid 29 is engaged with the connecting plate 25 in this manner, the lid 29 cannot be pulled upwardly and opened after the lid 29 is attached. Therefore, a lid 31 that can be opened and closed as shown in FIG. 6 is provided at the end along the longitudinal direction of the duct body 4.
By opening the lids 29, the lids 29 can be opened in sequence.

An engaging arm 32 that can engage with the lower surface of the support protrusion 5 is rotatably provided on the lower surface of the lid 31, and this engaging arm 32 is attached to a lock 33 (not shown) provided on the upper surface of the lid 31. It is constructed so that it can be rotated only by inserting a key and operating the rotation.

A ground terminal 34 (see FIG. 5) is provided on the outer surface of one side plate 6 of the duct body 4.
When the duct body 4 is installed, the ground terminal 34 is grounded via the ground wire 35.

Next, to explain the operation of this embodiment, when installing the wiring duct 1 by the wet method, first, after pouring and curing the concrete slab 2 that will become the substrate, the support bundle 16 is placed on the concrete slab 2. Install the duct body 4. At this time, it is necessary to adjust the level of the vertical and horizontal postures of the duct body 4, but since each support bundle 16 is commonly connected to the side plate 6, the level adjustment can be done in a short time and with high precision. . In contrast, conventionally, the support frames on both the left and right sides were supported by multiple support bundles, so when adjusting the level of both support frames, the support bundles were unified while taking into account the left and right balance. Adjustments were made for each book, which was complicated and time-consuming. After installing the duct body 4, additional cinder 3 is applied, but before that, both ends of each connecting plate 25 are temporarily fixed to the receiving frame 22 by temporary fixing members 26. As a result, even if cinder 3 is added around the duct body 4, the side plates 6, 6 will not collapse inward due to the pressure, and the duct body 4 will maintain its U-shaped cross section. Can be done.

After the curing process of the cinder 3 is completed, each temporary fixing member 26 is removed and the wiring is stored in the duct body 4. Next, a lid 29 is placed on the top of the duct body 4.
At this time, each lid 29 is fitted with its engaging piece 3.
0 to the connecting plate 25, the duct body 4 is sequentially attached from one end along the longitudinal direction. Finally, the lid 31 is fitted into the other end of the duct body 4, and by inserting a key into the lock 33 and rotating the engaging arm 32, the lid 31 and the support protrusion 5 are engaged.

In this way, the assembly work of the wiring duct 1 is completed, but the work that was previously required, such as forming a formwork, installing a crossbar, removing the formwork, installing a receiving frame, and finishing with mortar,
Various processes such as curing become unnecessary, making it possible to significantly shorten the work process.

Further, after the lids 29 and 31 are attached, the gap between the lids 29 and 31 is closed by the connecting plate 25, so that dust and the like are prevented from entering the duct body 4. Furthermore, each lid 29, 31 is electrically connected to the duct body 4 via the connecting plate 25 and the receiving frame 22, and by grounding the duct body 4, static electricity caused by walking on the lids 29, 31 can be removed. It is possible to prevent electromagnetic interference to wiring due to static electricity accumulation. Furthermore, since each lid 29 is engaged with the connecting plate 25 and the lid 31 is engaged with the support protrusion 5, it is difficult to open each lid 29 unless the lid 31 is opened using a key. Duct body 4
It is possible to prevent tampering with the wiring housed inside.

Although the above description has been made using the wet construction method, the wiring duct 1 according to the present invention can also be used for the dry construction method, as shown in FIG. In this dry construction method, the wiring duct 1 is
The duct main body 4 can be simply placed in a storage space formed of steel material 36 or the like and fixed to the slab concrete 2 with the support bundles 16, eliminating the need for the duct frame that was conventionally required, and greatly reducing work costs. Ru.

C. Effects of the Invention As described above, the wiring duct of the present invention includes: a duct main body in which a pair of side plates each having a support protrusion protruding inward are connected by a bottom plate to form a substantially U-shaped cross section; a plurality of mounting brackets fixed to the outer surface of the plate at spaced positions in the longitudinal direction thereof;
a plurality of support bundles each connected to the mounting brackets and whose height is adjustable; a plurality of support frames movably attached to the support protrusions of the side plates along the longitudinal direction of the side plates; a plurality of connecting plates that are passed between corresponding receiving frames of the plates;
a temporary fixing member capable of temporarily fixing each receiving frame and each connecting plate; and an engagement piece for engaging with the connecting plate to maintain a close state between the connecting plate and each receiving frame; a plurality of lids placed on the support protrusion to cover; each connecting plate being disposed at a position corresponding to a gap between adjacent lids;
The following effects (a) to (f) can be achieved.

(a) Since the support bundle is connected to the duct body, adjustment during installation is extremely easy. (b) The conventionally required duct frame is not required, and the duct body only needs to be directly attached, so the number of parts and work hours can be reduced. (C) Since the connecting plates are arranged in correspondence with the gaps between the respective lids, it is possible to prevent dust from entering the duct body. (d) Since each lid is electrically connected to the duct body via the connecting plate and the receiving frame, static electricity generated on the lid can be removed by grounding the duct body.
(e) Since each lid is engaged with the connecting plate, each lid cannot be opened easily, and tampering with the storage wiring can be prevented as much as possible. (f) The wiring duct of the present invention can be applied to both dry and wet construction methods, and particularly in the wet construction method, it is possible to significantly reduce the number of work steps.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a cross-sectional view of the wiring duct of the present invention when the floor is assembled using the wet construction method, Fig. 2 is an enlarged perspective view showing the duct body, and Fig. 3 The figure is an enlarged perspective view showing the support bundle.
The figure is an enlarged perspective view showing how the receiving frame is attached to the side plate and the temporary fixing member, FIG. 5 is an enlarged perspective view showing how the lid and the connecting plate are engaged, and FIG. 6 is the lid being locked. FIG. 7 is a cross-sectional view of the wiring duct of the present invention when the floor is constructed using the dry construction method. 1...Wiring duct, 4...Duct body, 5...
Support protrusion, 6... Side plate, 7... Floor plate, 12... Mounting bracket, 16... Support bundle, 22... Receiving frame, 25...
...Connecting plate, 26... Temporary fixing member, 29, 31...
Lid, 30...engaging piece.

Claims (1)

[Claims] 1. A duct body formed into a substantially U-shaped cross section by connecting a pair of side plates with a bottom plate, each having a support protrusion protruding inward; and a duct main body having a substantially U-shaped cross section; a plurality of mounting brackets fixed at fixed positions; a plurality of support bundles each connected to the mounting brackets and adjustable in height;
a plurality of receiving frames movably attached to the supporting protrusions of the side plates in a manner movable along the longitudinal direction of the side plates; a plurality of connecting plates passing between corresponding receiving frames of the both side plates; each receiving frame and the connecting plates; a temporary fixing member capable of temporarily fixing the plate; an engagement piece for engaging the connecting plate to maintain a close state between the connecting plate and each receiving frame; A wiring duct comprising: a plurality of lids placed on a support protrusion; each connecting plate being disposed at a position corresponding to a gap between adjacent lids.