JPH0584783B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a joist mechanism.

[Conventional technology]

A method in which a height-adjustable steel bundle is erected, a steel hoist is installed on the bundle, a joist is built on the hoshi in a direction perpendicular to the hoshi, and a floorboard is built on top of the joist. is widely known as a steel joist mechanism.

[Problem that the invention seeks to solve]

According to the traditional method, the bundles are covered with ohiki, joists,
Since the construction is carried out one after the other with the floorboards, the finished height as a whole becomes larger, and the floor height becomes higher.
This in turn leads to an increase in costs.

In order to solve these problems, the inventor
JP-A No. 63-97756 ``Floor substructure structure'' and JP-A No. 63-97756
No. 63-138064 "Cable floor substructure" provides for a joist having as essential elements a vertical web and a horizontal flange attached to its lower end.
We proposed a subfloor structure in which floorboards are installed between flanges.

This method is advantageous in that the height of the entire subfloor can be lowered, but because the rectangular floorboards are loaded onto two joists facing each other, unlike the case of four-sided support, it is possible to reduce the height of the entire subfloor. This requires the use of floorboards with very high bending strength (for example, floorboards made up of a plurality of semi-cylindrical bodies arranged in parallel), which has the disadvantage that the types of floorboards that can be used are limited.

It is an object of the present invention to provide a joist mechanism that has a low finished height and that allows the use of various floorboards without restrictions.

[Means to solve problems]

In order to solve these problems, this invention
A plurality of joists having a vertical web and a horizontal flange attached to the lower end thereof as essential elements are installed on the bundle, and the plurality of joists are placed in a direction perpendicular to the joists and The joist mechanism is constructed by installing between the flanges of the large drawers so that the upper surfaces of the large drawers are on the same level.

[Effect]

With this configuration, the finished height of the subfloor is
The thickness of the floorboard + the height of the large drawer makes it possible to finish the floor surface low without any waste, and also eliminates restrictions on the floorboards that can be used.

〔Example〕

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

<Bundle 1> As shown in Fig. 1, a substrate 11 made of thick steel plate
A bundle 1 having a height adjustment function is formed by cutting a screw in the center of the screw leg 14 with an operating groove 12 attached to the upper end and a bottom plate 13 attached to the lower end.

<Drawing 2> As shown in FIG.
shall be. Generally, the width of the top surface of the steel shaft is 20 to 70 mm, and the height of the web is 30 to 70 mm. Small holes 23 are provided at equal intervals on the flange surface, and a lip 24 folded upward is provided on the edge thereof. Operation holes 25 for screw legs are provided at various places on the upper surface of the hat-shaped steel.

The reason for providing the lip is to increase the section modulus of the joist and to fit the end of the joist into the lip to integrate the joist with the joist.

<Joist 3> As shown in Figure 3, it is made of galvanized steel plate with a thickness of 1.5 to 3 mm, the cross section is square, and the length is 30 to 90 mm.
Joist 3 is made of groove shaped steel with a standard length of cm. The height of the joist is 30 to 70 mm, which is the same as the height of the main web, and the width of the top surface is 20 to 70 mm. A notch 32 is provided at both ends of the side surface 31 to engage with the lip of the large drawer. Small holes 33 for screws are provided on the upper surface of both ends of the joists.

<Construction procedure of joist mechanism> When performing construction, as shown in FIG. 4, the joists 2 are installed parallel to the floor slab 4 at equal intervals. The large puller is supported in some places by bundles 1 and lifted from the slab, and the screw legs 14 are operated to level the upper surface of the large puller to the same level.

Joists 3 are constructed at intervals of 20 to 60 cm between two parallel wide flanges 22 in a direction perpendicular to the wide flanges. Insert the screw 34 from the small hole 33 on the top of the joist into the small hole 23 on the large flange.
Fix the joists in place.

Since the height of the joist is the same as the height of the flange of the main drawer, the top surface of the joist is naturally at the same level as the top surface of the main drawer. In this way, the lattice-like joist mechanism 5 is constituted by the parallel joists and the joists in the orthogonal direction.

<Construction of floorboards> To construct a subfloor on the joist mechanism 5 configured in this way, flat floorboards 6 may be laid as shown in FIG. 5. The floorboards are fixed to the top surface of the floor joists using methods such as screwing or gluing.

As shown in FIG. 6, a floorboard 6 having a thinner back on its four sides may be dropped into a lattice-like joist mechanism 5 made up of large drawers and joists.

〔supplementary explanation〕

As shown in FIG. 7, the distance between the large pulls 2 is set as short as 10 to 20 cm in some places. Here, the joists 3 can be omitted and the floorboards 6 can be constructed.

In this area, the spacing is narrow, so there is no problem with the strength of the floorboards even without joists. Since there are no floor joists, removing the floorboards creates a continuous groove. This groove is conveniently used as the wiring space 7.

In the above embodiment, if the wide joists (which can also be thought of as floorboards) are laid down without any gaps, the floor base will be formed.

It should be noted that the materials and shapes of each member used in this invention are not limited to the examples.

In the case of large joists, a single band-shaped flat plate has low bending strength and cannot support the joists. It is important that the vertical webs are integrally attached to the horizontal flanges and that the height of the webs affects the bending strength. Due to its strength and shape, metals such as iron and aluminum are often used, but angle steel bent into an L-shape attached to both sides of a prism may also be used.

Bending strength is most important for joists, but as long as the joists are strong enough, other than metal products, cement-based products, wood-based products, plastic-based products, etc. can be used freely.

Floorboards can be made of any material or shape, such as metal, wood, cement, or plastic, as long as they have the flatness and strength of the base.

〔effect〕

Since the present invention is configured as described above, it has the following features.

Since the web and flange are integrally formed, the daihiki is extremely durable. For this reason, it is possible to widen the interval between the bundles that support the large pull,
This helps reduce the cost of the entire mechanism.

By adjusting the height of the joists, you can naturally bring out the overall level without adjusting the height of the joists, making construction very easy.

The height of the joist is formed to be the same as the height of the web of the joist, and since the joist is installed on the flange of the joist, the top surface of the joist and the top surface of the joist are at the same level. Therefore, when compared to the conventional method in which joists are stacked on top of the floor planks, the total height is smaller and the floor height can be lowered.

Since the top surface of the joist and the top surface of the joist are on the same level, the floorboard is supported by both the joist and the joist. It is easier in terms of strength and allows for a wider range of material selection for the floorboard.

If the strength of the floorboards is low, the spacing between the joists can be set as desired, such as narrowing the spacing between the joists. Therefore, the range of floorboard selection is widened.

Since the joist is installed by fitting the notch into the lip of the joist, it is possible to prevent the joist from shifting or falling off in a direction perpendicular to the joist, and it is possible to integrate the joist with the joist.

Further, the horizontal load applied in the direction orthogonal to the joist can be resisted by the above-mentioned fitting structure between the notch and the lip, thereby increasing the strength of the entire joist mechanism.

There is a conventional joist mechanism that allows construction by simply placing the end of the joist on the flange of the joist (Utility Model Application No. 59-51938), but in this case, the placement position of the joist may be misaligned. If the joists are not even slightly parallel to each other, it becomes difficult or impossible to erect the joists, so it is necessary to install the joists while correcting the positions of the joists.

However, when the joist is moved to correct its position, the existing joists are simply placed on top of each other, so they may shift or fall off.

Therefore, in order to correct the position of the large pull, it is necessary to also correct the position of the joists, and these position corrections become extremely complicated and cause a decrease in work efficiency.

On the other hand, with the joist mechanism of the present invention, the slip of the joist and the notch of the joist fit together, so even if the joist is moved, the existing joist will not shift or fall off, and the joist will not be moved when the joist is installed. The distance between them can be maintained accurately.

Therefore, by simply erecting the joists one by one through the extremely simple process of fitting the slips and notches, the long gaps will naturally be corrected to be parallel to each other without having to consciously correct the position of the large gaps. ,
It is possible to improve work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a bundle, Fig. 2 is a perspective view showing an example of a large pull, Fig. 3 is a perspective view showing an example of a joist, and Fig. 4 is an example of the construction status of the joist mechanism. The perspective view, FIGS. 5 and 6 are front views showing an example of the construction situation of the subfloor, and FIG. 7 is a front view showing another example of the construction situation. DESCRIPTION OF SYMBOLS 1... Bundle, 11... Board, 12... Operation groove, 13... Bottom board, 14... Screw leg, 2... Large pull, 21... Web,
22...Flange, 23...Small hole, 24...Rip, 2
5...operation hole, 3...joist, 31...side surface, 32...notch, 33...small hole for screw, 34...screw, 4...floor slab, 5...joist mechanism, 6...floorboard, 7...wiring space.

Claims (1)

[Scope of Claims] 1. In a joist mechanism in which joists are installed orthogonally between a plurality of joists supported in a bundle so that the upper surfaces of the joists and the joists are on the same level, a web in the vertical direction is provided. A flange is attached horizontally to the lower end of the flange, and a lip is raised at the side end of the flange, and the cross-sectional shape is a semi-cylindrical body with a downward opening.
A joist mechanism, comprising: a joist having a notch at a lower end of its side surface; the joist notch is fitted into the wide lip, and the joist is constructed between the wide gaps.