JPH08338121A - Reinforcing bed, composite floor board and grooved wiring floor - Google Patents

Abstract

PURPOSE: To provide a composite floor board as well as a grooved wiring floor of light weight and high strength by applying the constitution that a reinforcing leg is formed around a flat rigid board, and a plurality of reinforcing beds having a reinforcing leg made of a bent part of the flat board on the center lower side are integrated with the lower side of a surface board. CONSTITUTION: The periphery 11 of a rigid square flat board is drawn down orthogonally, thereby forming a reinforcing leg 2. In addition, a plurality of the center sections of the flat board are drawn to a round cup form, thereby forming reinforcing projections 22 for use as a reinforcing bed 1. In this case, the height of the projections 22 is kept identical to the height of the leg 2 of the periphery 11. Also, four reinforcing beds 1 are arranged like a grating at intervals suitable for a wiring groove and, then, a surface board 30 is jointed thereto in a superposed state, thereby forming a composite floor board 3. Furthermore, a groove cover is laid between coamings 12, thereby forming a grooved wiring floor. Also, four corners of the floor board 3 are cut out to form a leading outlet for wiring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing base, a composite floor board, and a grooved wiring floor using the same.

[0002]

2. Description of the Related Art Recently, floor-laying type wiring floors have been widely used. The inventor is the Japanese Patent Application No. 7889
No. 2 and the title of the invention, "Floorboard for Double Floor," proposed a floor-laying wiring floor using thin steel plates. Since a steel plate with high rigidity is used, there are many merits such as no fear of burning, high load strength, and a wide wiring space even if the floor height is low. However, when forming a floor with wiring grooves, it has been found that there is a problem that opening and closing of the lid is rather difficult because a half-angle cylinder whose cross-sectional shape is open downward is used.

[0003]

It is an object of the present invention to provide a laid floor type wiring floor having a lid which can be easily opened and closed, as well as a reinforcing base and a composite floor board for constituting the wiring floor, in order to solve the above problems. Has an aim.

[0004]

To this end, according to the present invention, a reinforcing leg is formed at a peripheral portion of a rigid flat plate and is lowered substantially vertically, and a part of the flat plate is bent or drawn on the lower surface of the central portion. By the above, a reinforcing base is formed in which reinforcing legs having substantially the same height as the peripheral portion are attached to the lower surface. Further, one or more reinforcing bases are combined on the lower surface of a surface plate made of a rigid flat plate to form a composite floor board, and the reinforcing base supports the periphery of the surface plate. When forming a wiring floor, the peripheral edge of the reinforcement base is projected from the peripheral edge of the surface plate with a narrow width to form a composite floorboard with an erection edge, and the composite floorboards are arranged side by side with a gap between them. By installing a groove lid between the erection edges,
The entire surface is made substantially the same plane.

[0005]

Function: A reinforcing base having a large number of reinforcing legs can be easily formed from one flat plate. By combining such a reinforcing base and a flat plate, a durable composite floor board can be obtained. Furthermore, a wiring floor that is easily removable can be obtained simply by installing the groove cover on the installation edge of the composite floor board.

[0006]

[Embodiment 1] A reinforcing base 1 is shown in FIG. Thickness 0.
It is formed by using a galvanized steel sheet for deep drawing of 5 mm. The reinforcing legs 2 are formed by squeezing the four peripheral edges 11 of the square flat plate 10 downward at a right angle of about 4 cm. The lower ends of the reinforcing legs are shortly bent outward to form the ground contact portion 21. At the same time, the central portion of the flat plate 10 is squeezed into a circular cup shape to form the reinforcing protrusions 22. The height of the reinforcing protrusions is the same as the height of the peripheral reinforcing legs. The completed reinforcing table is a square plate-like body having a height of about 4 cm and a surface of about 25 cm.

[0007]

[Embodiment 2] FIG. 2 shows a composite floor board 3 formed by combining a reinforcing base and a surface board. Four reinforcement bases 1 to 3
They are arranged side by side in the shape of a square with a space of a centimeter, and the surface plate 30 is stacked on it, and spot welding, caulking, etc. are used for joining. The surface plate 30 is wholly supported by a reinforcing base, and erected edges 12 each having a width of about 1.5 cm are formed to protrude outside the four sides. The face plate 30 is made of a square galvanized steel plate having a thickness of 1.6 mm and a side of 50 cm.

[0008]

Example 3 To form a grooved wiring floor, as shown in FIG. 3, a wiring floor 4 having a width of about 10 cm is formed in the vertical and horizontal directions and a composite floor board 3 is laid. 1.6 mm thick,
A strip lid 5 having a width of about 12 cm and reinforced by transverse beads 51 is erected between the erection edges 12 on both sides. The groove lid 5 has a length of 50 cm and covers the intersection 41 of the wiring groove 30.
Prepare two types of centimeters.

[0009]

Fourth Embodiment FIG. 4 shows an example of a composite floor board 3 in which the four corners of a square are cut. The surface plate 30 in which the four corners are similarly cut is superposed on the reinforcing base 1 formed in the shape in which the four corners are cut off. A wiring outlet 6 is provided on each of the cut sides.

A method of forming the reinforcing base 1 of this embodiment will be described. A 1.2 mm thick galvanized steel blank 7 having a shape as shown in FIG. 5 is formed. In each peripheral edge 11 of the modified octagonal flat plate 10 in which the four corners of the square are cut off,
Band-shaped leg forming portions 71 each having a width of 4 cm are attached. A long tongue notch 60 continuous with the outer edge is provided on the leg forming portion 71 provided on the corner-cut peripheral edge. A plurality of U-shaped punches 72 are provided in the central portion of the flat plate 10. The line segment connecting the tips of the U-shaped punches is the refraction line 73. A substantially rectangular leg forming portion 71 surrounded by a U-shaped punching 72 on three sides and a refraction line 73 is formed.

As shown in FIG. 6, the leg forming portion 7 of the peripheral edge 11 is formed.
1 and the leg forming portion 71 of the central portion are simultaneously bent at a right angle downward by press working to complete the reinforcing base 1 provided with a large number of reinforcing legs 2. The tongue-shaped notch becomes the wiring outlet 6. A modified octagonal surface plate 30 which is slightly smaller than the reinforcing base is superposed on the reinforcing base 1 and joined to complete the composite floor board 3. A supporting stand projects and a erection edge 12 is formed around the surface plate. The erected edge portion of the reinforcing base may be formed to be slightly lower than the other portions in advance.

As shown in FIG. 7, in order to join the surface plate and the reinforcing base, a small hole 74 is formed in the flat plate 10 of the reinforcing base, and a burring that projects downwardly from the surface plate 30 at a position corresponding to the small hole. 31 may be provided, burring may be inserted into the small hole, and the burring may be crushed to crimp.
In this case, a plastic cushion sheet 8 having the same size as the reinforcing base and having holes at the same location may be sandwiched between the two and then caulked together. This is advantageous because the erection edge 12 is covered with a cushion sheet and the squeaking noise between the surface plate and the reinforcing base can be suppressed.

[0013]

[Fifth Embodiment] As shown in FIG. 8, a composite floorboard 3 according to a fourth embodiment.
Are laid out with a wiring groove 4 having a predetermined width. At the intersection 41 of the wiring groove, a substantially octagonal groove lid 5 is installed. A strip-shaped groove lid 5 is installed on the parallel wiring grooves, and the whole is flattened. When the composite floorboard is laid on the floor surface, it is desirable to lay a thin cushion sheet 8 made of rubber, cushioning resin, or the like on the floor surface as well, in order to make it smooth.

The reinforcing base / composite floorboard of the present invention is not limited to the wiring floor with grooves shown in the embodiments. It may be used to form a flat raised floor by laying a composite floorboard in which a reinforcing base of the same size and shape and a surface board are united. The merging may be performed on-site by using glue or double-sided adhesive tape.

[0015]

Sixth Embodiment As shown in FIG. 9, a composite floorboard 3 of the present invention is used.
It is also possible to form the raised floor by installing the reinforcing bases 1 at a wide interval and laying wood plywood covering a large area thereon as the surface plate 30.

[0016]

Since the present invention is constructed as described above, the following effects can be expected. 1 Since a large number of reinforcing legs can be simultaneously formed on the reinforcing base, it can be manufactured at an extremely low cost. (2) Since the reinforcing base does not directly appear on the surface, there is no danger of objects colliding with each other and denting. Therefore, the reinforcing base can be formed of a thin steel plate or the like, which enables weight reduction and cost reduction. 3 A composite floorboard can be formed by combining a flat surface board with a reinforcing base, and therefore the composite floorboard can be produced at an extremely low cost. 4. Since the surface plate can be freely selected, a large floor plate covering a large area can be easily formed. 5 When forming a wiring floor, if a small surface plate is attached on the reinforcing base to form a erection edge, and a groove lid is mounted on this erection edge, the lid can be attached and removed very easily, and It is convenient when operating the wiring. 6 If the composite floor board is cut into corners to form an octagon, it is convenient to bend the cord when wiring in the wiring groove. 7. If a rectangular floor plate is used, it is difficult to support the lid at the intersection of the wiring grooves, but if a corner-cutting floor plate is used, it is convenient because the lid can be supported by the corner cutting edge. 8 Since it is possible to form a composite floorboard using multiple reinforcement bases,
The size and shape of the surface plate can be freely selected. Even if a corner cut floor plate is used, it is a problem that a half edge is created by construction near the wall, but it is possible to freely use a half cut floor plate. 9 Since the basic structure can be formed entirely of steel plates, it is possible to provide a non-combustible, high-strength, lightweight reinforcing plate / composite floor plate / wiring floor.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an example of a reinforcing base.

FIG. 2 is a plan view showing an example of a composite floor board. (Partial surface plate cut out)

FIG. 3 is a plan view showing an example of a formation state of a grooved wiring floor.

FIG. 4 is a plan view showing another example of the composite floor board.

FIG. 5 is a plan view showing an example of a method of forming a reinforcing base.

FIG. 6 is a side sectional view showing another example of the composite floor board.

FIG. 7 is a side cross-sectional view showing an example of a method of joining the reinforcing base and the surface plate.

FIG. 8 is a plan view showing another example of the formation status of the wiring floor with grooves.

FIG. 9 is a side sectional view showing another example of the composite floor board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcement stand 12 Construction edge 2 Reinforcement leg 3 Composite floor board 30 Surface board 4 Wiring groove 5 Groove lid 6 Wiring outlet 7 Vent board 8 Cushion sheet

Claims (6)

[Claims] 1. A stiff flat plate is provided with a reinforcing leg that descends substantially vertically, and a part of the flat plate is bent or drawn on the lower surface of the central part so that the same height as the peripheral part is obtained. Reinforcement base characterized by forming reinforcement legs. 2. A reinforcing plate according to claim 1, wherein one or more reinforcing bases are combined with a lower surface of a surface plate made of a rigid flat plate,
A composite floorboard, characterized in that the surface plate is supported by the reinforcing legs of the reinforcing base. 3. The composite floorboard according to claim 2, wherein at least one corner of the reinforcing base having a rectangular planar shape is diagonally cut, and the corresponding surface plate is also cut. 4. The erection edge is provided by projecting the peripheral edge of the reinforcing base from the peripheral edge of the surface plate with a predetermined width.
The composite floor board according to claim 2. 5. The combination of a reinforcing base and a surface plate, characterized in that a thin cushioning sheet-like material is sandwiched between the two to cover at least the erection edge. A composite floorboard as described. 6. The composite floorboard according to any one of claims 3 to 5 is laid on a floor surface at a predetermined interval, and is laid between the erection edges that face each other to form a flat surface. A wiring floor with a groove, which is characterized by that.