JPH0865863A - Wiring duct support structure on floor - Google Patents

Abstract

PURPOSE: To simplify duct support structure by using as a wiring duct supporting means joists conventionally provided for supporting a floor panel. CONSTITUTION: In a floor in which a plurality of joists N are provided on the base surface fB and a plurality of floor panels P are supported on the joists, a wiring duct D comprising a duct main body 8 having an opening part 8a in the upper surface and closing lid 9 capable of opening and closing the opening part 8a is fixedly placed on the joists and at the same time the upper surface fD of the wiring duct D is formed flush with the upper surface fp of the floor panel P adjacent to the duct D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a wiring duct on a floor in which a plurality of joists are arranged on a base surface and a plurality of floor panels are supported on the joists.

[0002]

2. Description of the Related Art Double floors that use joists for supporting floor panels have been used as mere floors in the past, but recently, floor base surfaces that support joists and floor panels supported on joists. Some have also used the underfloor space between and as a wiring space to prevent the wiring from being exposed on the floor surface.

On the other hand, it is already known that a wiring duct whose upper surface can be opened and closed with a lid is buried in slab concrete or post-cast concrete on the floor to form a wiring path so that the wiring is not exposed on the floor surface. Has been.

[0004]

When the underfloor space of the joist double floor is used as the wiring space as in the former case, the underfloor space can be effectively used, and the wiring is not exposed to improve the appearance and safety. However, on the other hand, there is a tendency that the wiring runs vertically and horizontally in the underfloor space and becomes messy, and it is troublesome to open and close the floor panel during additional wiring or maintenance. There is a problem such as being overloaded.

Although the above problems are all solved when the wiring duct is formed by using the wiring duct as in the latter case, the conventional wiring duct is embedded and integrated in the floor slab concrete or post-cast concrete. Since the burying work is relatively complicated and troublesome, it is necessary to carry out “chipping work” of the floor concrete when burying the duct in the existing building, and a substantial floor renovation work is required. There is another problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wiring duct supporting structure for a floor, which can solve all the above problems of the conventional ones.

[0007]

In order to achieve the above object, the invention of claim 1 is such that a plurality of joists are arranged on the base surface and a plurality of floor panels are supported on the joists. On the floor, a wiring duct consisting of a duct main body having an opening on the upper surface and a lid that opens and closes the opening is placed and fixed on the joist, and the upper surface of the wiring duct is adjacent to the floor. The invention is characterized by being formed so as to be flush with the upper surface of the panel, and the invention of claim 2 is characterized in that, in addition to the above characteristics, the lower surface of the duct body is engaged with the upper part of the joist. The invention of claim 3 is characterized in that an engagement groove portion extending along the longitudinal direction is formed. Further, in addition to the above respective features, the protrusion extending outwardly is provided on both side portions of the lower portion of the duct main body. Parts are integrally connected, and the upper surface of the overhanging part is Supporting the side edge of the floor panel adjacent to the main body of the floor, and the lower surface of the overhanging portion is integrally formed with an engaging portion capable of engaging with the upper end portion of the auxiliary leg that is erected on the base surface. It is characterized by that.

[0008]

[Operation] According to the above configuration of the inventions of each claim, since the wiring path under the floor is constructed by using the wiring duct whose upper surface can be opened and closed by the lid, the wiring is not exposed on the floor surface, and the appearance and safety are improved. Not only is it advantageous in terms of performance, but in the case of additional wiring or maintenance, it is possible to open the duct lid that can be easily opened and closed to easily perform wiring work and maintenance inspection work. Moreover, since such a wiring duct is placed and fixed on the joist, the joist, the wiring duct and the floor panel are laid out when a new wiring duct is installed in an existing building or when the duct is added or the line is changed. It can be easily handled by so-called lifting work.

Further, according to the above configuration of the invention of claim 2, the engagement position of the wiring duct and the joist is relatively positioned by engaging the engaging groove portion recessed in the lower surface of the duct body with the upper part of the joist. It can be easily performed, and the wiring duct can be formed as deep as possible except the part corresponding to the joist.

Further, according to the above configuration of the invention of claim 3,
The floor panel adjacent to the wiring duct can be directly supported by the wiring duct, and its supporting strength is enhanced by the auxiliary leg. Further, the positioning of the auxiliary leg can be easily performed by engaging the engaging portion on the lower surface of the overhanging portion and the upper end portion of the auxiliary leg.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic overall plan view showing a state in which a floor panel is partially removed, of the floor according to the present invention, and FIG.
2-2 is an enlarged cross-sectional view taken along the arrow 2 in FIG. 3, FIG. 3 is an enlarged perspective view of an essential part showing a supporting structure of joists and wiring ducts, and FIG.
-4 is an enlarged cross-sectional view taken along arrow 4, and FIG. 5 is an enlarged perspective view of a main portion of the cross-shaped cross wiring duct.

First, in FIG. 1, a floor wiring device A extending vertically and horizontally along the floor surface of a floor F in a room is provided, and the floor wiring device A is arranged in a plurality of columns. Wiring ducts D and cross wiring ducts D ′ (in the example shown in the drawing) that connect the wiring duct rows in a T-shape, a cross shape, or an L-shape when viewed from above are configured in combination. A predetermined wiring path extending vertically and horizontally is formed on the floor F by D and D '.

On a horizontal base surface f _B of the floor F formed of slab concrete or the like, a support leg unit U described later is provided.
The joists N made of steel are vertically and horizontally arrayed through and supported by a plurality of floor panels P and floor wiring devices A.
Each wiring duct D is mounted and supported.

Next, the supporting structure of the joist N will be described with reference to FIGS. Each joist N is formed by forming a steel material into a substantially rectangular cross section and extends linearly along the base surface f _B of the floor F. On the base surface f _B , a plurality of support leg units U are arranged at intervals in the longitudinal direction of the joist N, and the joist N is detachably erected on these support leg units U.

Each of the supporting leg units U is a base plate 1 fixed on a base surface f _B , and is erected integrally on the base plate 1 in the longitudinal direction of the joist N (in FIGS. A pair of main support legs 2 and 2 which are offset from each other in a direction orthogonal to the direction) and in a lateral direction (left and right directions in FIGS.
A supporting plate 4 horizontally connected between the upper portions of the two main supporting legs 2 and 2, and a supporting plate 3 made of a cushioning material such as rubber that is joined to the supporting plate 4 and allows the joist N to be directly placed on the upper surface thereof. When,
The support plate 4 is composed of a fixing band 5 made of a metal plate for bending and locking both ends in engagement holes 4a formed on both right and left sides of the support plate 4 to press the joist N on the support plate 3 from above. A pair of left and right holding pieces 4b and 4c that sandwich the joist N from the left and right are integrally formed on both left and right sides of the support plate 4, and the two holding pieces 4b and 4c are spaced from each other in the longitudinal direction of the joist N. And the fixing band 5 is located in the middle.

The support plate 4 has through holes (not shown) through which the main support legs 2 are inserted, and upper and lower parts which are respectively screwed into screw parts engraved on the outer peripheral surface of the main support legs 2. It is sandwiched between a pair of nuts 6 and 7, and the height of each support plate 4 can be arbitrarily adjusted by adjusting the screwing positions of both nuts 6 and 7. When installing the joist N, first, the joist N is placed on each of the support plates 4 of the plurality of support leg units U arranged at intervals along the planned installation position, and the fixing band 5 is used. The joist N is fixed to each support plate 4, and in this state, the nuts 6 and 7 of each support leg unit U are appropriately rotated to adjust the height of the joist N on each support plate 4. Then, the base plate 1 of each supporting leg unit U is fixed to the base surface f _B of the floor F by an appropriate fixing means such as an adhesive or an anchor, and the joist N is supported by the supporting leg unit U to a desired height on the base surface f _B. It can be installed and fixed in the position.

As shown in FIG. 1, a plurality of joists N are arranged at appropriate positions on the floor F at intervals, and most of the joists N are adjacent to each other in cooperation with each other. Figure 4
As shown in, one floor panel P is placed and supported on both sides,
If necessary, secure it to the upper wall of joist N with bolts B. In this case, between the upper surface of the joist N and the lower surface of the floor panel P, a seat plate 12 made of a cushion material such as rubber having substantially the same thickness as the fixing band 5 is interposed.

The wiring duct D is provided on a part of the joist N.
Is mounted and fixed. Next, the support structure of the wiring duct D will be specifically described. As shown in FIG. 2, each wiring duct D is formed in a channel shape having an opening 8a on the upper surface and extends in the longitudinal direction of the joist N, and the opening 8a of the duct main body 8 is opened and closed. The duct main body 8 is constituted by a lid 9, and a first wiring path L ₁ for accommodating a power supply line and a telephone line or a signal line are accommodated in the duct main body 8 by a partition wall 10 standing upright from a central portion of the bottom wall. And the second wiring path L ₂ for

A relatively wide raised portion 11 which is convex upward is integrally formed at the center of the bottom wall of the duct body 8, and the lower surface of the bottom wall of the duct body 8 is formed corresponding to the raised portion 11. Engagement groove 8 formed along the joist longitudinal direction
The upper part of the joist N is fitted in b with some play. Between the upper surface of the joist N and the bottom surface of the engagement groove portion 8b, a seat plate 12 made of a cushion material such as rubber having a thickness substantially the same as that of the fixing band 5 is interposed. From above the raised portion 11, a mounting bolt B ₁ for fixing the duct body 8 to the joist N penetrates the raised portion 11 and the seat plate 12 and the joist N
It is screwed into the upper wall of the.

A pair of left and right overhanging portions 13 extending substantially horizontally outwardly is integrally connected to the lower left and right sides of the duct main body 8, and the upper surface of each of the overhanging portions 13 is integrally formed. , Through the sheet-shaped cushioning material 14 adhered to its upper surface,
A side edge portion of the floor panel P adjacent to the duct body 8 is placed and supported. A sheet-like cushion material 15 is also adhered to the lower surface of each of the overhanging portions 13, and a pair of locking projections 13i and 13o parallel to the lower surface of each of the overhanging portions 13 on both sides of the lower cushion material 15. Are integrally formed,
The two locking projections 13i and 13o cooperate with each other to form an engaging portion of the present invention, and can engage with the upper end portion of the auxiliary leg S described next.

The auxiliary legs S are arranged in pairs on the left and right sides at intervals in the longitudinal direction of the wiring duct D and with the joist N interposed therebetween. Each of the auxiliary legs S includes a base plate 16 fixed on a base surface f _B of the floor F, a hollow cylindrical lower leg 17 integrally provided on the base plate 16, and a lower leg 17 thereof. The upper leg 18 has a screw shaft portion 18a which is inserted from above into the screw shaft portion 1 of the upper leg 18.
A flat head portion 18b that can be engaged with the lower surface of the overhanging portion 13 is integrally connected to the upper end of 8a. Further, the screw shaft portion 18a
An adjusting nut 19 whose lower end abuts against and is supported by the upper end of the lower leg 17 is screwed into the shaft, and when the nut 19 is rotated, the relative position of the nut 19 and the screw shaft portion 18a in the axial direction. Changes and the upper leg 18 moves up and down with respect to the lower leg 17,
Thereby, the support height of the upper leg 18 can be adjusted arbitrarily.

On the peripheral wall of the adjusting nut 19, a screw rod 20 for laterally locking the screw shaft portion 18a of the nut 19 is laterally screwed, and the inner end of the screw rod 20 has an outer periphery of the screw shaft portion 18a. Is pressed to fix the screwing position of the adjusting nut 19 to the screw shaft portion 18a. Further, an engaging hole 20a for engaging a tool is provided in the outer end of the screw rod 20.

Further, on the upper peripheral wall of the lower leg 17, the upper leg 1
8, a height fixing bolt B ₂ for fixing the adjusting height to the lower leg 17 is laterally inserted, and the tip of the bolt B ₂ is brought into pressure contact with the outer circumference of the screw shaft portion 18a of the upper leg 18 and the upper leg 18 is pressed. The support height of 18 is fixed. Also this is the shaft of the height fixing bolt B ₂ engaged locking nut 21 is threaded, by tightening the nut 21, the height fixing bolt B ₂ can be reliably prevented from loosening by vibration.

The lid 9 is formed in a rectangular shape as viewed from above so as to cover the opening 8a of the duct body 8, and its left and right side edge portions are locking steps formed on the inner surfaces of the left and right side walls of the duct body 8. A locking arm portion 9a, which is fitted and locked to the portion 8c, and which is elastically engageable with the inner surfaces of the left and right side walls of the duct body 8 is integrally provided on the lower surface of the lid 9. . The central portion of the lid 9 in the width direction is attached to the upper end of the partition wall 10 of the duct body 8 and is elastically silenced 22 which is locked to the upper end and extends in the longitudinal direction.
Supported through.

Further, as shown in FIG. 5, the intersecting wiring duct D'has different wiring paths of the wiring ducts D intersecting each other (that is, the first wiring path L ₁ of one wiring duct and the first wiring path L ₁ of the other wiring duct). 2 wiring path L ₂ ; second wiring path L ₂ of one wiring duct and first wiring path L ₁ of the other wiring duct) Having a crossover path 23 at the center for crossing each other, seen from above A cross-shaped cross duct body 8 ', and a cross-shaped cross lid 9'which also closes the upper opening 8a' of the cross duct body 8 '.

The intersecting duct body 8'has an integrally formed extending duct portion 24 extending in four directions from the three-dimensional intersection 23 at the center thereof. The cross-sectional shape of each of the extending duct portions 24 is basically the same as that of the duct body 8 of the wiring duct D, and the first and second wiring paths L are provided at the center of the bottom wall.
_1, L ₂ partition wall 10 for partitioning the 'is erected. The left and right overhanging portions 13 ′ and 13 ′ of the respective extension duct portions 24 have upper and lower end portions of a pair of left and right auxiliary legs S having the same configuration as the auxiliary legs S used to support the wiring duct D described above. (That is, the flat head portion 18b) is engaged, and thereby each extension duct portion 24 is supported on the base surface f _B via the auxiliary leg S. The central bottom wall of the cross duct body 8 ', across the sound-absorbing rubber plate 25 on the upper end of the bed base surface f _B height erected on adjustable posts 26 is abutting the support.

The upper surface f _D of the wiring duct D, i.e. the upper surface of the duct main body 8 left and right side walls and the lid 9, and the upper surface f _P of the floor panel P, be formed on the upper surface flush with the crossing wiring duct D ' , Constitutes a flat floor surface. A floor finish material C such as carpet, cork material or P tile is joined to the upper surfaces of the wiring ducts D and D ′ and the floor panel P.

Next, the operation of the above embodiment will be described.
When raising the floor F, a plurality of joists N are installed on the base surface f _B of the floor leg F along the floor surface in the vertical and horizontal directions and at predetermined height positions by the above-described procedure. .

Next, a plurality of wiring ducts D are provided on some joists N.
Move to the work for mounting and fixing in a column. In this work, first, the duct main body 8 of each wiring duct D is placed on the joist N so that the engaging groove portion 8b of the bottom wall of the duct main body 8 is fitted to the upper part of the joist N, and then the mounting bolt B ₁ The duct body 8 is fixed to the joist N by. After that, the upper end of the auxiliary leg S (that is, the flat head 18b at the upper end of the upper leg 17) is engaged with the engaging portion (that is, both locking protrusions 13i, 13o) on the lower surface of the overhanging portion 13 on both sides of the duct body 8. Auxiliary leg S
The support height of the upper leg 18 at the base is adjusted and fixed, and the base plate 16 is fixed to the base surface f of the floor F by an adhesive or an anchor.
Fix on _B.

The above work is sequentially performed for each wiring duct D, and the ends of the adjacent wiring ducts D are butted against each other and connected. At the intersection of the wiring duct D,
The central bottom wall of the above-mentioned cross wiring duct D'is attached to the pillar 26.
And the left and right laterally extending portions 13 'and 13' of the respective extending duct portions 24 extending in four directions from the central portion thereof are provided with the auxiliary legs S.
And the end portions of the respective extension duct portions 24 are abutted against the end portions of the corresponding wiring duct D to be connected.

After the wiring duct D and the cross wiring duct D'are set in this manner, the floor panels P are sequentially laid. In this case, the floor panel P adjacent to the wiring duct D or the cross wiring duct D'has one side edge portion thereof as shown in FIG.
Each of them is placed and supported on the other side, while the other side edges are shown in FIG.
It is placed and fixed on the joist N as shown in FIG. In addition, the other floor panels P are placed and fixed on the pair of parallel joists N at the left and right side edges as shown in FIG. Thus floor panel P
A floor surface is formed by the upper surfaces of the wiring ducts D and D ', and the floor finishing material C is attached on the floor surface. The floor finishing material C may be attached individually to the upper surfaces of the floor panel P and the lids 9 and 9'of the wiring ducts D and D'in advance.

If the wiring paths L ₁ and L ₂ under the floor are constructed by using the wiring duct D whose upper surface can be opened and closed by the lid 9 as described above, the wiring is not exposed on the floor surface, and the appearance and safety are improved. Of course, in the case of additional wiring or maintenance,
Wiring work and maintenance and inspection work can be easily performed by opening the duct lids 9 and 9'which can be easily opened and closed. Moreover, since the wiring duct D is mounted and fixed on the joist N, even when the wiring duct is newly installed in the existing building or when the duct is added or the line is changed, the joist N and the wiring are This can be easily dealt with by so-called raising work in which the ducts D, D'and the floor panel P are appropriately laid out, so that the working time and cost can be reduced. Moreover, since the joists N which are conventionally provided for supporting the floor panel are also used as the supporting means of the wiring duct D, the duct supporting structure can be simplified accordingly.

Further, in particular, by engaging the engaging groove portion 8b recessed in the lower surface of the duct body 8 with the upper portion of the joist N,
Since the relative positioning of the wiring duct D and the joist N is easy, and since the wiring duct D can be formed as deep as possible except for the joist corresponding portion thereof, the effective capacity of the wiring duct D should be secured as wide as possible. You can

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various design changes can be made within the scope of the present invention. For example, the number of wiring paths formed in the wiring duct may be one or three or more, and a wiring connection device such as a movable outlet may be installed in a part of the wiring path if necessary. If necessary, the lid of the wiring duct may be provided with a passage opening with a small lid or a movable outlet for taking out the wiring in the wiring path into the room.

[0035]

As described above, according to the invention of each claim,
Since the wiring path under the floor is constructed using a wiring duct whose top surface can be opened and closed with a lid, the wiring is not exposed on the floor surface, which is advantageous in terms of aesthetics and safety, as well as additional wiring. For maintenance or the like, the duct lid which can be easily opened and closed can be opened to easily perform the wiring work and the maintenance and inspection work. Moreover, since the wiring duct is placed and fixed on the joist, the joist, the wiring duct, and the floor panel can be installed when the wiring duct is newly installed in the existing building or when the duct is added or the line is changed. This can be easily dealt with by so-called raising work in which the tiles are lined up, which can greatly contribute to the reduction of working time and cost reduction. Further, since the joists conventionally provided for supporting the floor panel are also used as the supporting means of the wiring duct, the duct supporting structure can be simplified accordingly.

According to the second aspect of the invention, the relative positioning of the wiring duct and the joist can be easily performed by engaging the engagement groove formed in the lower surface of the duct body with the upper part of the joist. Further, the wiring duct can be formed as deep as possible except the portion corresponding to the joists, which can contribute to the increase of the effective volume.

According to the third aspect of the present invention, the bulging portions extending outward are integrally connected to both side portions of the duct body, and the upper surface of the bulging portion is adjacent to the duct body. The side edge of the floor panel to be supported is formed integrally with the lower surface of the overhanging portion, which is engageable with the upper end of the auxiliary leg that is erected on the base surface. The floor panel adjacent to the duct can be directly supported by the wiring duct, and its supporting strength can be increased by the auxiliary legs. Further, since the auxiliary leg can be easily positioned by engaging the engaging portion on the lower surface of the overhanging portion with the upper end of the auxiliary leg, it is possible to contribute to improving the efficiency of the installation work of the auxiliary leg.

[Brief description of drawings]

FIG. 1 is a schematic overall plan view showing a state in which a floor panel is partially removed, of a floor according to the present invention.

FIG. 2 is an enlarged sectional view taken along the line 2-2 of FIG.

FIG. 3 is an enlarged perspective view of a main part showing a supporting structure for joists and wiring ducts.

FIG. 4 is an enlarged sectional view taken along arrow 4-4 of FIG.

FIG. 5 is an enlarged perspective view of a main part of a cross-shaped cross wiring duct.

[Explanation of symbols]

D ……………… Wiring duct F ……………… Floor L ₁ , L ₂ …… _First and _second wiring paths as wiring path N ……………… Joist S ……………… Auxiliary leg f _B ………… Base surface f _D ……………… Top of wiring duct f _P ……………… Top of floor panel 8 ……………… Duct body 8a ………… Opening 8b ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… Locking protrusion 18b ... Flat head as the upper end

Claims (3)

[Claims] 1. A plurality of joists (N) on the base surface (f _B ).
In which a plurality of floor panels (P) are supported on the joists (N), a duct body (8) having an opening (8a) on the upper surface and the opening (8a) A wiring duct (D) consisting of a lid (9) that opens and closes is fixed on the joist (N), and the upper surface (f _D ) of the wiring duct (D) is fixed to the duct (D).
Top (f _P) and characterized by being formed so as to flush cable duct support structure in the bed of the floor panel (P) which are adjacent to. 2. An engagement groove (8b) extending along the longitudinal direction of the joist (N) is formed on the lower surface of the duct body (8) so as to engage with the upper part of the joist (N). The wiring duct support structure for a floor according to claim 1, wherein the wiring duct support structure is for a floor. 3. The duct main body (8) is integrally connected to both sides of the duct main body (8) so as to extend outward, and the duct main body is provided on the upper surface of the protrusion (13). The side edge of the floor panel (P) adjacent to (8) is supported, and on the lower surface of the overhanging portion (13) of the auxiliary leg (S) which is erected on the base surface (f _B ). The wiring duct support structure for a floor according to claim 1 or 2, wherein an engaging portion (13i, 13o) capable of engaging with the upper end portion (18b) is integrally formed.