JPH02200963A - Underfloor construction for wiring - Google Patents

Abstract

PURPOSE:To prevent the lateral totter of a floor joist by mutually connecting the adjacent floor joists perpendicularly to the floor joist using a connecting rod provided along the lower face of the floor joist. CONSTITUTION:A long floor joist 1 is formed into a half-cylinder which is made of extruded aluminum and has a sectional shape opening downward, and composed of an upper face 11, severally two webs 12, flanges 15 and lips 14, and has a slit 15 between the lips 14, and moreover a bolt leg 17 threadedly engaged in a fitting nut 16 inserted into the half-cylinder. A connecting member 2 formed of a thin half-cylinder opening upward is fixed to the bottom face of a floor joist 1 perpendicularly to it using a pair of a bolt and a nut 21. The floor joists 1 having the fixed connecting member 2 respectively are laid on a slab spaced in parall to each other, and a bar-shaped connecting rod 22 is fitted in the half-cylinder of the connecting member 2 to mutually connect the adjacent connecting members 2. The tottering of the floor joist 1 can be thereby prevented.

Description

[Detailed description of the invention] C Industrial application field] The present invention relates to a wiring floor substructure.

[Conventional technology]

The inventor has disclosed that
A plurality of joists having as essential elements a vertical web and a horizontal flange attached to the lower end thereof,
A wiring floor substructure 1 is constructed by installing supporting stands at intervals so as to provide at least a gap through which the cord can pass between the slab and the flange, and constructing both ends of the floorboard over the joists, - Using a strong floorboard only in the axial direction,
It has been successfully used to form a low floor base and is widely used.

[Problem that the invention seeks to solve]

The disadvantage of this substructure is that the joists are supported by a series of rows of joists, which causes them to sway laterally.

Means for Solving Problem c] In order to solve this problem, in the present invention, adjacent joists are connected using a connecting rod attached to the lower surface of the joists in a direction perpendicular to the joists.

[Effect]

With this configuration, adjacent joists are connected, eliminating unevenness of the joists.

[Real 8r! example〕 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in the 1st vIJ, the cross-sectional shape is semi-cylindrical with a downward opening, and the width is 50 f by aluminum extrusion molding.
A web 12 with a height of 30n is attached downward to both ends of the upper surface 11 of the l, and a web 12 with a width of 2n is attached on the outside in the horizontal direction of the lower edge of the web.
5m flange 13, inner 15fs lip 14
attached to form a long joist material.

A slit 15 with a width of about 20 m is formed between the lips on both sides.

A fitting nut 16 is inserted into the half-tube of the joist material, and a bolt leg 17 is fitted to the fitting 7 to form the joist l.

As shown in No. 2821, a connecting tool 2 consisting of a thin semi-cylindrical body with a length of 150 mm and an opening on one side is attached to the bottom surface of the joist 1 in a direction perpendicular to the bottom surface of the joist 1. For installation, use bolts and nuts 21 with slotted holes. In this way, the connector can be moved to any desired location along the slit.

As shown in Figure 183, bolt legs are installed at 50aa intervals, and joists 1 with connectors 2 attached between them are laid out in parallel on a slab, and the connections attached to the joists are laid out in parallel! L2
and the connecting tool 2 of the adjacent joist using the connecting rod 22,
Connect while maintaining the specified spacing.

The connecting rod 22 is a rod-shaped body that fits into the half-cylindrical body of the connecting tool,
The connecting rod 22 is attached to the connecting tool using screws 23.

In this way, a grid-like joist group is formed. The connection can be done by alternating the connecting rods in a so-called amida shape.Also, if multiple joists are connected, the unsteadyness of the joists will be resolved, so it is also possible to partially omit the connecting rods. be.

To form the wiring floor base, both ends of the floorboard 3 are mounted on the flanges 13 of the joists 1, as shown in FIG. By configuring the thickness of the floorboard and the depth of the web of the joist to be intermediate, the surface of the suspended floorboard is configured to be at the same level as the upper surface of the joist. Further, as shown in FIG. 5, the thickness of the surface board on which the surface board 31 at both ends of the floor board 3 is mounted on the upper surface 11 of the joist 1 is usually 2 to 3 fi, and it is not allowed to exceed 5 fl. do not have.

By mounting the floorboards in this way, a wiring space is created under the joists, connecting rods, and floorboards.

Note that the shapes of the joists, connectors, and connecting rods of this invention are not limited to the embodiments, and may be, for example, as shown below.

FIG. 6 shows a joist 1 consisting of a hat ram to which a hook 1F claw 18 is attached; a24
This is an example of a connecting rod 22 made of a semi-cylindrical body with attached to both ends.

FIG. 7 shows an example of a joist 1 made of lip-shaped steel and a cylindrical connecting rod 22 attached to the bottom surface of the joist with bolts and nuts 21.

Further, in the embodiment, the coupling tool and the bolt leg are formed separately, but it goes without saying that the leg may be attached to the coupling tool and integrated.

〔effect〕

The main purpose of this invention is to eliminate the looseness of the joists, but it also inherits the features of the conventional method and provides an overall extremely superior wiring floor substructure.

In the case of this invention, since the floorboards are installed on joists supported by support legs spaced apart, the weight of the floorboards and the entire load thereon are borne by the joists. Therefore, the joists are required to have high bending strength. To meet this requirement, the web, flange and/or lip are integrally formed to obtain a large moment of inertia. In this sense, the integrally formed flange and/or lip and web are essential components.

Also, one of the features of this invention is that the thickness for providing strength of the floorboard is buried in the thickness of the joist.
Normally, the finished height of the subfloor is determined by adding the thickness of the floorboards to the thickness of the joists, but in this invention, the thickness of the floorboards may be added, but in this case, the thickness of the floorboards is Since there is no need to add a!, a low floor base can be formed, and a relatively large wiring space can be created. It becomes possible to maintain

Floorboards can be made of any material or shape, such as gold, wood, or cement, as long as they are flat and strong enough to serve as a base. Both ends of the floorboard are linearly supported by the upper surface of the flanges or joists, so unlike the case of four-corner support, it is possible to reduce weight by creating a hollow structure/rib structure that is reinforced in one axis.For example, Aluminum is the best floorboard for wiring floor substrates due to its light weight, ease of construction, antistatic properties, and cleanliness, but it has traditionally been a tie-cast product, which is expensive. (7) However, since extrusion molded products can be used in the method of this invention, one major advantage is that inexpensive aluminum floorboards can be used.

Because the floorboards without legs are laid out on top of the joists, which are arranged in a uniform manner, it is extremely convenient to attach and remove the floorboards for wiring work, etc., and because the joists themselves are leveled in advance, Another great feature of this invention is that there is no need to level the floor after installing and removing the floorboards.

In summary: ■ Since the joists are connected in the transverse direction, the joists do not get stuck like in the conventional method.

■ The connecting rods are attached to the bottom of the joists, so you can connect them to the floorboards! ! It does not get in the way of the pigeon coop.

■ The long joists are also connected in the transverse direction, and the overall structure is connected in a lattice pattern, so it has high W resistance.

■ The thickness of the floorboard is buried within the thickness of the joists, resulting in a low-slung subfloor structure.

■ Since the floorboard only needs to be strong in one axis, it is possible to choose materials that are inexpensive and have good performance.

■ Floorboards can be freely attached and detached independently of the joists,
Since there is no need to adjust the level after tits, placement i1Tki etc. is convenient.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view showing an example of a joist, Fig. 2 is a front view showing a state in which a connecting tool is attached, and Fig. 3 is a yf! The plan view showing the T situation, Figures 4 and 5 are front views showing an example of the floor board construction situation, and Figures 6 and 7 are front views showing an example of the combination of joists and connecting rods. . 1 figure

Claims (2)

[Claims] (1) A plurality of joists each having a vertical section and a lateral section attached to the lower end as essential elements are placed between the slab and the joists with supporting legs erected at predetermined intervals. Make sure there is at least a gap for the cord to pass through.
In a wiring floor substructure constructed by installing parallel to a slab and constructing both ends of the floorboard over the joist so that the surface of the floorboard is approximately the same as the top surface of the joist, A wiring floor foundation structure characterized by connecting adjacent joists using connecting rods attached to the bottom surface. (2) A joist consisting of a long piece of material that has a semi-cylindrical cross-sectional shape with a downward opening, and has flanges on the outside and lips on the inside in the horizontal direction on both lower edges.