JPH074623U - Precast concrete floor - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a floor of precast concrete in which a floor panel whose wiring outlet can be freely changed can be easily laid and a space for wiring is provided. [Structure] On the surface of the precast concrete plate 10,
Columnar projecting portions 20 aligned vertically and horizontally at regular intervals are integrally provided, and a passage 30 for underfloor wiring is formed between the projecting portions 20.
Each protrusion 20 is flat so that it can support the floor panel 40. Four insertion holes 21 for fitting the protrusions 41 of the floor panel 40 are provided on the upper surface of the protruding portion 20. Insertion holes 21 are provided in every other protruding portion 20 on the basis of the protruding portions 20a provided at the corners of the precast concrete board 10.
The floor panel 40 has a square shape and thin columnar protrusions 41 at the four corners.
To provide. The projection 41 of the floor panel 40 is inserted into the insertion hole 21, and the surface of the rectangular precast concrete plate 10 is covered with the floor panel 40 having a square plate surface in order from the corner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a precast concrete floor, and in particular, can configure a space for wiring under the floor.

[0002]

[Prior art]

 Conventionally, floor duct systems and OA double floor systems have been used for underfloor wiring in office buildings, etc., in order to secure a large-capacity wiring space in response to OA. The floor duct method is a method in which a metal duct is embedded in the floor slab and an outlet is provided every 0.6 m. On the other hand, the OA double floor system is a system that secures a wiring space under the floor by laying a floor panel with support legs on a square plate of about 0.45 m square on a floor slab.

[0003]

[Problems to be solved by the device]

 However, in the conventional method, for example, in the floor duct method, there are problems that the position of the outlet is limited and it is difficult to replace the wiring. Further, in the OA double floor system, the position of the take-out port can be set relatively freely, but there is a problem that the work for laying the floor panel on the floor slab is troublesome and the cost is high. On the other hand, there was a dislike that the characteristics of the slabs made into precast concrete by the conventional factory processing were not fully utilized, compared to the precast concrete processing that should have been able to be processed with high precision in the factory. .

Therefore, the present invention adopts precast concrete that enables high-precision processing, so that it is easy to lay a floor panel whose outlet can be changed, and a precast concrete floor provided with a space for wiring. Aimed to provide.

[0005]

[Means for Solving the Problems]

 In order to achieve the above objective, in a precast concrete floor used for floor construction in offices, etc. where underfloor wiring is required, a large number of projecting parts with a flat top surface are aligned vertically and horizontally on the precast concrete plate surface. In addition, an insertion hole was provided on the upper surface of at least one of the projecting portions, and a projection provided on the lower surface of the floor panel was fitted into this insertion hole to cover the precast concrete board surface with the floor panel.

[0006]

[Action]

 In the present invention, since the floor panel is attached by fitting the projection of the floor panel into the insertion hole provided in the projecting part where the top surface of the precast concrete plate is flat, the precast concrete plate is prevented from lateral slippage. The surface can be covered with floor panels. In addition, since the floor panel does not laterally shift, it is only necessary to fit the protrusions into the insertion holes when installing the floor panel, which allows the floor panel to be freely attached and detached, and the wiring outlet can be changed freely. it can. Since the projecting parts on the precast concrete plate are aligned vertically and horizontally, the space formed between the projecting parts can be used as a passage for electric cables for underfloor wiring. Further, if the projecting portions are formed in an octagonal or circular columnar shape, the electric wire cables laid in the passages provided between the projecting portions will not be damaged by the corners of the projecting portions.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The precast concrete floor A according to the present invention is integrally molded by casting concrete in a mold in a factory. The dimensions, standards, etc. of the precast concrete floor A of this embodiment are set according to the conventional precast concrete floor. On the surface of the precast concrete board 10, projections 20 aligned in the vertical and horizontal directions are provided along the peripheral edge of the rectangle and integrally formed with the precast concrete board 10 by the mold frame.

The protruding portion 20 is formed in an octagonal column shape. The octagonal columnar projecting portion 20 is arranged such that one side of the octagonal shape matches the peripheral edge of the precast concrete plate 10 with reference to the projecting portion 20a provided at the corner of the rectangular precast concrete plate 10. They are arranged vertically and horizontally at regular intervals. In this way, the underfloor wiring passages 30 are formed vertically and horizontally between the protruding portions 20 on the surface of the precast concrete plate 10. Further, since the protruding portion 20 is formed in an octagonal prism shape, when wiring is performed through the passage 30, even if the wiring is bent, the wiring is not damaged at the corner of the protruding portion 20.

The heights of the octagonal columnar protrusions 20 are all the same, and the upper surfaces of the protrusions 20 are formed flat. Therefore, when the floor panel 40, which will be described later, is attached, the surface of the floor panel 40 comes into flat contact with and is supported by the upper surface of the projecting portion 20. Further, the height of the projecting portion 20 is such that when the electric cable used for underfloor wiring is laid, the electric cable or the like does not protrude above the passage 30 provided between the projecting portions 20. It is set.

The octagonal upper surface of the projecting portion 20 is provided with four insertion holes 21 into which projections 41 of a floor panel 40 described later can be fitted. The four insertion holes 21 are provided symmetrically with respect to the center of the octagon on the upper surface of the protruding portion 20 so that the central angles thereof are at right angles. Further, the insertion hole 21 is formed to such an extent that a thin columnar projection 41 of a floor panel 40, which will be described later, can be inserted to the root portion. Further, with reference to the protrusions 20a provided at the corners on the precast concrete board 10, all the protrusions 20 are set to have the insertion holes 21 every other.

On the other hand, the floor panel 40 is formed in a flat square shape, and the length of one side of the floor panel 40 is octagonal between the protruding portion 20 having the insertion hole 21 and the protruding portion 20 having the adjacent insertion hole 21. Is set equal to the distance a between the centers of the upper surfaces of the. Further, at the four corners of the floor panel 40, there are provided four thin columnar projections 41 having a length and a diameter just fitted to the insertion holes 21 of the projecting portion 20. When the four protrusions 41 are arranged so that the four corners of the square floor panel 40 are aligned with the upper surface of the protruding portion 20 having the insertion hole 21, the protrusion 41 can be just inserted into the insertion hole 21 of the protruding portion 20. , Is provided perpendicular to the plate surface of the floor panel 40.

In this way, while inserting the protrusion 41 of the floor panel 40 into the insertion hole 21 on the upper surface of the projecting portion 20 of the precast concrete board 10, the rectangular precast concrete board 10 on the surface in order from the corner, It can be covered with a floor panel 40 having a square plate surface. At this time, a part that cannot be covered by the square floor panel 40 is generated along the peripheral edge of the precast concrete board 10 in the form of a strip. However, the part is a peripheral edge floor panel 42 and a corner having a shape adapted to this part. A floor panel 43 for use is separately formed so as to cover the floor panel 43.

The peripheral rectangular floor panel 42 is formed in a rectangular shape whose long side is set to be equal to the length a 1 of one side of the square floor panel and whose short side is set to be equal to the width b of the strip-shaped uncoverable portion. Has been done. Further, at both ends of the rectangular floor panel 42, the same protrusions 41 provided on the square floor panel 40 are fitted one by one so that they can be fitted into the insertion holes 21 of the protruding portion 20. It is provided. In addition, the four corners of the precast concrete board 10 can be covered by separately preparing a floor panel 43 for square corners, one side of which is set equal to the width b of the uncoverable portion. There is. The corner floor panel 43 is also provided with one protrusion 41, which is the same as that provided on the floor panel 40, at the center of the square surface.

In this way, while inserting the projection 41 of the floor panel 40 into the insertion hole 21 on the upper surface of the projecting portion 20 of the precast concrete board 10, the surface of the precast concrete board 10 is sequentially ordered from the end into a square shape. It can be covered with a floor panel 40 having a plate surface. Further, the peripheral floor panel 42 is used for the peripheral portion of the precast concrete plate 10 and the corner floor panels 43 are used for the four corners to cover the surface of the rectangular precast concrete plate 10. You can do it. After that, by laying a floor finishing material such as tile carpet on the floor panels 40, 42, 43 laid on the surface of the precast concrete plate 10, there is a passage 30 of a wiring space under the floor, and the wiring is taken out. The floor is designed so that the mouth can be changed freely.

The present invention is not limited to the above-described embodiment. For example, the insertion hole 21 provided in the projecting portion 20 is not provided in the specific projecting portion 20 as described above, but all the By providing the protruding portion 20 with the insertion hole 21, the floor panel may have a polygonal shape other than the quadrangle or a floor panel having a curved contour. The projecting portion may also be a column other than the above-mentioned embodiment. Further, instead of separately preparing the rectangular floor panels 42 and 43 for the peripheral edge portion, it is also possible to separately prepare a floor panel 40 having the peripheral edge portion added thereto. Further, only the peripheral portion may be covered with a panel having no protrusion.

[0016]

[Effect of device]

 According to the present invention, the floorboard can be formed by inserting the projections of the floor panel into the projections that are vertically and horizontally aligned on the precast concrete board.Therefore, unlike the conventional method, there is a wiring space at the work site. The construction work of the double floor can be simplified, and it is possible to achieve large labor saving and shortening of the construction period. Since the projections of the precast concrete board are provided in many rows and columns, even the floor panels of various shapes can support the weight on average, and it is possible to use floor panels with a larger area than before. is there.

[Brief description of drawings]

FIG. 1 is an explanatory plan view (a) in which a part of a precast concrete floor is covered with a floor panel. Sectional explanatory drawing (b) in the state which covered a part of precast concrete floor with the floor panel.

FIG. 2 is a perspective view of a precast concrete board.

[Explanation of symbols]

 10 Precast Concrete Plate 20 Projection Part 21 Insertion Hole 30 Passage 40 Floor Panel 41 Protrusion A Precast Concrete Floor

Claims (1)

[Scope of utility model registration request] 1. A precast concrete floor used for floor construction of an office or the like, which requires underfloor wiring,
On the surface of the precast concrete plate, a large number of projections with a flat upper surface are arranged vertically and horizontally, and at least a part of the projections has an insertion hole on the upper surface, and this insertion hole is provided on the lower surface of the floor panel. The precast concrete floor is characterized in that the surface of the precast concrete plate is covered with a floor panel by fitting the projections.