JPH02204568A - Structure of under floor for wiring - Google Patents

Abstract

PURPOSE:To ensure wiring space and get rid of the shaking of floor joists by inserting floor joist members into inserting arms provided on four sides on the periphery of floor posts having height-adjustable legs in order and linking the floor joist members to one another by means of square pipes. CONSTITUTION:Each floor post 1 has a height-adjustable bolt leg 15 on its center bottom face and inserting arms 13 which project out of its periphery on four sides. Then, floor joist members 2 each composed of a square pipe in which supporting edges 21 are provided on its lower end portion are inserted in order into the inserting arms 13 which are aligned on a straight line to form a composite floor joist A. Mutually adjacent floor joists 2 are linked together in a grid form by inserting the square pipes onto the inserting arms 13 while placing floor boards in such a way that the finished face thereof is flush with the composite floor joist A. Thereby, a wiring space C can be sufficiently ensured while preventing the shaking of floor joists by the legs 15 placed in every direction.

Description

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

[Conventional technology]

In Tokukai No. 61-286227, the inventor proposed that [a plurality of joists each having a vertical web and a horizontal flange attached to the lower end of the joists as essential elements are supported at intervals, A wiring floor substructure constructed by installing a small gap between the slab and flange so that the cord can pass through, and installing both ends of the floorboard over the joists.
By using a floor plate that is strong only in the axial direction, we succeeded in forming a low floor base, and it is now widely used.

[Problem that the invention seeks to solve]

The disadvantage of this substructure is that the joists are supported by legs arranged in series and therefore tend to wobble laterally.

[Means to solve problems]

In order to solve this problem, the present invention uses a bundle with height-adjustable legs attached to the bottom of the central part and inserting arms that protrude in all directions around the legs. A composite joist is constructed by inserting a joist made of a square pipe with a support edge attached to the joist, and for adjacent joists, a square pipe or a square pipe with a support edge is inserted into the insertion arm protruding laterally. The floorboards are connected in a grid pattern and the floorboards are mounted so that the finished surface is flush with the composite joists.

[Effect]

With this configuration, adjacent joists are connected to each other, thereby eliminating unevenness of the joists.

[Example 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Shown in FIG. 1 is a part 1 made of die-cast aluminum. A through hole 11 is provided at the top and bottom in the center of the prismatic main body 10, a plastic nut 12 is loaded below the through hole 11, and four downwardly opened insertion arms 13 are protruded from the upper end of the periphery. , the nut 12 has an operating groove 1 at the upper end.
The bolt leg 15 with 4 is mated. The upper surface of the main body is formed to be approximately 2n higher than the upper surface of the insertion arm. One side of the prism of the main body is 5011, and the length is 40**. The insertion arm has a cross-sectional size of 45 mm on each side and a length of 50 mm.

What is shown in FIG. 2 is a joist material 2 made of extruded aluminum. Support edges 2 are provided on both sides at the lower end of the square tube 20.
1 will be attached. The square tube 20 is the insertion 1 of the above bundle! '112
Form it so that it fits securely inside. The width of the top surface is 50wm
The height is 2511 cm above the supporting edge and the length is 75 cm. The connecting rod 3 shown in FIG. Top width is 50
m, height is 27 m, and length is 50 cm.

What is shown in FIG. 4 is the floorboard 4. The floor plate is made of aluminum extrusion molding, and three hollow reinforcing tubes 41 are integrally attached to the back surface of the top plate 40. The thickness is 25
It is 1 m, width is 22.5 CIl, and length is 45 cm.

As shown in FIG. 5, the construction method is to construct a composite joist A by inserting the joists 2 one after another into two of the four insertion arms of the bundle 1 on a straight line. Composite joists A are laid parallel to each other at intervals on the slab. Adjacent composite joists A comrades are bundle 1
Between the insertion arms 13 that protrude laterally at right angles,
Insert the connecting rod 3 and connect firmly while maintaining a certain distance.

Composite joists A connected at regular intervals are connected to bolt leg 1 of bundle 1.
5 to obtain a level, and as shown in FIG. 6, the floor board 4 is placed between the supporting edge 21 of the joist 2 and the adjacent supporting edge 21 to form a subfloor. A wiring space C is formed between the subfloor and slab B.

For construction near a wall, it is convenient to prepare a special member as shown in Figure 7. Fig. 7 (f8) shows a bundle 1 in which two insertion arms 13 are attached at right angles to the main body 10 (Fig. 7 (b)).
1'', which also has three insertion arms, Fig. 7 (C1 is a joist 21 with a supporting edge 21 attached only to one side of the square tube 20).
etc.

[Example 2] Use bundle 1 similar to the previous example.

Use the same joist material 2 as in the previous example. However, the length is 45cm
A support edge 21 with an obliquely cut end is used.

No connecting rods are used.

The floorboard 4 is a hard cement board with a thickness of 25 mm and a square side of 45 cm.

The construction is the same as in Example 1, but instead of connecting rods, joists with supporting edges are used. Looking at the construction results, as shown in Figure 8, joists 2 and 2 are used. becomes a composite joist A assembled in a lattice shape with bundles 1 at the four corners. Support edges 21 are formed around the inner four circumferences of the lattice frame.

Drop the floorboards into such a lattice frame. It is necessary to choose a thickness that allows the surface of the floorboard to be at the same level as the surface of the joists. The floorboard is supported on four sides by supporting edges, which is desirable for stability and strength.

〔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, the floorboards are installed on joists supported by spaced support legs, so that the joists bear the entire weight of the floorboards and the load thereon. Therefore, the joists are required to have high bending strength. In the case of this invention, this problem is solved by using a square tube. The square tube is
One purpose is to mate with the insertion arm of the bundle. From that point of view, there is no problem even if the bottom of the square tube is partially opened, but in order to obtain a large moment of inertia,
A completed square tube is preferable.

When a completed square tube is used, the insertion arm of the bundle can be fitted into the bundle no matter which part of the square tube is cut, which is convenient for construction, such as near a wall.

In addition, one feature of this invention is that the thickness for providing strength of the floorboard is buried in the thickness of the joist, and normally the finished height of the subfloor is equal to the thickness of the joist and the floorboard. However, in this invention, the thickness of the floor plate is not added, so a low floor base can be formed, and a relatively wide wiring space can be secured.

The bundle is made longer than the joists and floorboards, and the bolt legs are built into it, which is convenient because the range of height adjustment is wide. It is also possible to create a raised floor by using long bolt legs.

Floorboards can be made of any material or shape, as long as they have flatness and strength as a base, such as metal, wood, cement, resin, or composite products. Since the floorboard is linearly supported at both ends or on all four sides by the supporting edges, it is possible to reduce the weight by creating a hollow structure or rib structure that is reinforced in one axis direction, unlike the case where the floorboard is supported at four corners.

For example, aluminum is the best choice for wiring floor substrates and floorboards in terms of light weight, ease of construction, antistatic properties, and cleanliness, but in the past, aluminum was limited to die-cast products and was expensive. However, in the method of this invention, Example 1
As shown in Figure 2, one of the major advantages is that extrusion molded products can be used, so inexpensive aluminum floorboards can be used.

Because the floorboards without legs are laid on top of the well-structured synthetic joists, it is extremely convenient to attach and remove the floorboards for wiring work, etc., and because the synthetic joists are leveled in advance, Another major feature of the present invention is that there is no need to adjust the level of the floor surface after attaching and detaching the floorboards.

In summary: - The synthetic joist is firmly connected into one long joist by the insertion arm of the bundle, so it is durable and easy to level.

■ The joists are also connected in the transverse direction and are configured in a lattice pattern, so the joists do not get stuck like in traditional methods.
It also has high earthquake resistance.

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

■ Since the bolt legs are built into a long bundle, the range of height adjustment is wide. Also, high floors can be created using long bolt legs.

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

■ It is also possible to support the floorboards on all four sides, so floorboards with weaker sides can also be used.

■ Floorboards can be freely attached and detached independently of the joists,
Wiring work is convenient because there is no need to adjust the level after attaching and detaching.

[Brief explanation of the drawing]

Figure 1 is a front view (partially showing a cross section) of an example of a bundle.
, Fig. 2 is a front view showing an example of a joist material, Fig. 3 is a front view showing an example of a connecting rod, Fig. 4 is a front view showing an example of a floor board, Figs. 5 and 8 are a front view showing an example of a connecting rod. , a plan view showing the construction status, FIG. 6 is a front view thereof, and FIG. 7 (al and fbl are plan views showing other examples of bundles), and FIG. It is a front view showing an example.

Claims (2)

[Claims] (1) A square tube with support edges attached to both lower ends of the two insertion arms in a straight line, in a bundle with height-adjustable legs on the bottom of the center part and insertion arms protruding from all sides around the legs. A composite joist is constructed by inserting joists of a predetermined length one after another and connecting them in a straight line. A plurality of the above composite joists are laid on the slab at parallel intervals, and two adjacent For the composite joists, both ends of square pipes of a certain length and a thickness that will be finished on the same plane as the joists are inserted between the insertion arms that protrude laterally, and held at a constant interval. A wiring floor substructure consisting of a floorboard with a thickness that is flush with the joists between the support edges of the joists. (2) A bundle with height-adjustable legs attached to the bottom of the central part and insertion arms protruding in all directions around the legs, each insertion arm having a predetermined length of square tube with supporting edges attached to both lower ends. A composite joist is constructed by inserting the joists one after another and connecting them in a grid pattern, and within the support edge of the composite joist is placed a floorboard of a thickness that is flush with the joists. Wiring floor substructure.