JP4480911B2 - Metal joist - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal joist that can be used as a joist in a building such as a wooden structure or a unit structure.
[0002]
[Prior art]
In general, wooden joists using barrels and the like are often used as this type of joists, but recently, metal joists are also being used. For example, a configuration described in Japanese Patent Laid-Open No. 5-302374 is known as a conventional example.
[0003]
In this conventional example, a rectangular panel frame is formed of a metal channel material, and a plurality of metal joists formed of the metal channel material are installed in the panel frame. On one side (upper surface), a base material having a high heat insulating property such as a wood base is attached and a heat insulating material is fitted between the base materials.
[0004]
In such a metal joist, the structure relating to the coupling of the plurality of metal joists installed in the panel frame and the panel frame is neither explained nor illustrated, but generally coupled with screws or screws. Is. For that purpose, for example, using a metal fitting such as a corner member bent at a right angle as a separate part, addressing the corner member at the abutting position of the metal joist against the panel frame, the panel frame and the corner member, and the metal joist and the corner member respectively. The connection is achieved by screwing or screwing.
[0005]
Also, such building materials are generally taken into the construction site in a disjointed state in many cases in consideration of the ease of handling and the ease of transportation and transportation, etc., and are appropriately assembled at the construction site. It is. In this case, the panel frame and the metal joist are cut to a designed length, but no other processing is performed.
[0006]
[Problems to be solved by the invention]
By the way, when assembling the panel frame and metal joists at the construction site, the module is marked and tapped with a drill to attach the corner member. A hole having a size corresponding to the frame and the metal joist has to be formed at a predetermined position, and time and labor are required for that purpose, resulting in poor assembly workability.
[0007]
In addition, since a lot of time and labor is spent on the assembly work, there is a problem that the construction work period becomes longer and the cost is increased accordingly.
[0008]
Therefore, in the joist of the configuration composed of the conventional panel frame and the metal joist, there are problems that must be solved by facilitating the assembly workability and shortening the construction work period to reduce the cost. Have.
[0009]
[Means for Solving the Problems]
As specific means for solving the problems of the prior art, the present invention includes a plurality of joist materials arranged adjacent to each other at a predetermined interval, and a pair of track materials for fixing or connecting and supporting both ends of the joist material. And a plurality of anti-locking materials fixed or connected in a bridging manner in the vicinity of substantially the middle of the arranged joist material, wherein the joist material is formed of a cross-sectional C-type channel material and at least one piece A hole for piping or wiring is provided, and the track material is formed of a channel material having a U-shaped cross section, and a plurality of flaps for fixing or connecting and supporting the ends of the joist material are formed at predetermined intervals. The anti-slip material is formed of a channel material having a U-shaped cross section, and both ends of the anti-slip material fall on both sides while leaving the thickness of the joist material substantially on the upper surface. The cut is intended to provide a metal joists, characterized in that a pilot hole for the previously screwed to the fixing or coupling parts of the components.
[0010]
Further, in the present invention, the flap in the track material is cut and raised, and rib-like protrusions for reinforcement are formed on both sides of the cut and raised portion; and the joist material, the track material and the anti-roll material are It is formed of a hot dip galvanized steel sheet as an additional requirement.
[0011]
The metal joist according to the present invention is provided with a pilot hole for screwing in advance at the fixing or connecting portion of each component member, so that the assembling work at the construction site is remarkably facilitated, and the joist material Since at least one hole for piping or wiring is provided in the pipe, equipment construction such as piping or wiring can be performed quickly, and together, the construction period can be shortened.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the metal joist according to the present invention will be described with reference to the drawings. First, in FIG. 1, a metal joist 1 includes a plurality of joist members 2 arranged adjacent to each other at a predetermined interval, and a pair of track members 3 for fixing or connecting and supporting both ends of the joist member 2; It is composed of a plurality of anti-slip members 4 fixed or connected in a bridging manner between adjacent members in the vicinity of the middle of the arranged joist material 2, and these are combined in a set order. As a result, the metal joist 1 having a substantially rectangular shape as a whole is obtained.
[0013]
As shown in FIG. 2, the joist material 2 is formed of a C-shaped cross-section channel material, and at least one, preferably a plurality of piping or wiring holes 5 are provided at appropriate positions. A plurality of screw holes 6, 7, and 8 are formed in advance at the fixing or connecting portion with the track member 3 at both ends and the fixing or connecting portion with the anti-roll material 4 at the intermediate position. .
[0014]
The joist material 2 is formed of, for example, a hot dip galvanized steel sheet having a thickness of 1.0 to 3.0 mm, and has an overall length of approximately 3000 mm and a width of 235 to 300 mm. As shown in FIGS. 3 and 4, the width of the folded top portion 2a is set to about 40 mm, the length of the hanging portion 2b hanging from the top portion is set to about 20 mm, and the hole 5 for piping or wiring as a whole It is formed in an elliptical shape of approximately 145 × 200 mm, and the rising height of the hole wall 5a is set to approximately 20 mm. It should be noted that these dimensions are only a guide and can be changed as appropriate.
[0015]
As shown in FIGS. 5 and 6, the track material 3 is formed of a channel material having a U-shaped cross section, and the joist material 2 is disposed in an adjacent state at a predetermined interval. In addition, a flap 9 for fixing or connecting and supporting the end portion is cut and raised, and rib-shaped convex portions 10 that also serve as reinforcement are formed on both sides of the cut and raised portion of the flap 9. The rib-shaped convex portion 10 can be press-molded by pressing at the same time as the flap 9 is cut and raised.
[0016]
Also in the track material 3, a pilot hole 11 for screwing is provided in advance at a portion where the joist material 2 is fixed or connected, and a pilot hole 12 for screwing is also provided in the flap 9 in advance. The track material 3 is also formed of a hot dip galvanized steel sheet having a thickness of 1.0 to 3.0 mm, similar to the joist material 2, and has an overall length of approximately 1820 to 2000 mm. The width is set to about 239 to 304 mm. And as shown in FIG. 7, the width | variety of the folded top part 3a is about 40 mm, the length of the flap 9 cut and raised is about 150 mm, and a width | variety is about 20 mm. It should be noted that these dimensions are only a guide and can be changed as appropriate.
[0017]
The anti-roll material 4 has the configuration shown in FIG. That is, the flat surface has a rectangular shape as a whole, has falling walls 4a and 4b that hang from both side edges, and has a U-shaped cross section. Similar to the joist material 2, the thickness is 1.0 to 3 0.0 mm hot dip galvanized steel sheet.
[0018]
In short, the anti-slip material 4 is set to have a length corresponding to the interval between the joist materials 2 arranged adjacent to each other, and the length is at least the both joist materials arranged adjacent to each other. It is necessary to make the length so that both ends overlap the top portion 2a of 2. Therefore, if the disposition interval (center portion) of the joist material 2 is, for example, 500 mm, it is preferable that the total length of the anti-roll material 4 is approximately 500 mm. In this case, the width is about 90 mm, and the width (height) of the falling walls 4a and 4b is about 40 mm.
[0019]
Since the falling walls 4a and 4b of the anti-slip material 4 need to be accommodated between the adjacent joist materials 2, the both end portions substantially correspond to the width of the top portion 2a of the joist material 2 or slightly less than that. It is cut in a long length. Incidentally, the length of the cut is about 43 mm.
[0020]
That is, the anti-slip material 4 is formed as cut portions 13 and 14 in which both end portions of the falling walls 4a and 4b are cut while leaving the upper surface of the thickness of the joist material 2 (the width of the top portion 2a). A pilot hole 15 for screwing is provided in the vicinity of both ends of the upper surface that remains and is fixed or connected. It should be noted that the state in which the falling walls 4a and 4b are fitted between the adjacent joist members 2 is preferably a loose fitting state having a so-called margin.
[0021]
The components having the above-described configuration, that is, the joist material 2, the track material 3, and the anti-slip material 4 are brought into the construction site in a disjointed state, and the joist material 2 and the track material 3 are positioned at the construction site. Then, the respective fixed or connected portions are aligned, and the respective prepared holes provided in the respective fixed or connected portions are opened and connected or fixed with appropriate screws or screw materials.
[0022]
In this case, a plurality of joist members 2 arranged adjacent to each other can be screwed without being bent or twisted by interposing the anti-rolling material 4 in the central portion at the stage of positioning. In particular, since the pilot hole is provided, the assembly work can be performed very quickly.
[0023]
Further, in assembling the joist material 2 and the track material 3, the flap 9 provided on the track material 3 serves as a reference for alignment, so that the alignment can be performed quickly, and the joist material 2 can be moved relative to the flap 9. The end portion can be fixed or connected, and the top portion 2a of the joist material 2 can also be fixed or connected to the top portion 3a of the track material 3, so that it is stable as a whole. .
[0024]
Furthermore, the anti-slip material 4 is fitted from the upper part of the adjacently arranged joist material 2 and can be positioned and screwed from the upper part, so that workability is further facilitated.
[0025]
In any case, the metal joist 1 according to the present invention has the structure specified as described above, so that the assembly work at the construction site is remarkably easy, and can be assembled in a short time. The strength as joist is enough. And after attaching to the floor beam of a building, naturally, necessary floor materials, such as a heat insulating material and a floor panel, are laid by the upper part of metal joists.
[0026]
【The invention's effect】
As described above, the metal joist according to the present invention includes a plurality of joist materials arranged adjacent to each other at a predetermined interval, and a pair of track materials for fixing or connecting and supporting both ends of the joist material. And a plurality of anti-locking materials fixed or connected in a bridge shape in the vicinity of substantially the middle of the arranged joist material, wherein the joist material is formed of a cross-sectional C-type channel material and at least one pipe Alternatively, a wiring hole is provided, and the track material is formed of a channel material having a U-shaped cross section, and a plurality of flaps for fixing or connecting and supporting the end portion of the joist material are formed at predetermined intervals. The anti-slip material is formed of a channel material having a U-shaped cross section, and both ends of the anti-slip material are cut off on both sides by leaving the thickness of the joist material on the upper surface. In addition, by using a structure in which a pilot hole for screwing is provided in advance in the fixing or connecting portion of each component member, screwing is performed using the pilot hole in assembly work at the construction site, so that In addition, it is not necessary to print or reinforce on the site, and the assembly work is remarkably facilitated, and at least one pipe or wiring hole is provided in the joist material. Or, the installation work such as wiring can be performed promptly, and there is an excellent effect that the construction period of the work can be shortened together.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an assembled state of a metal joist according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a joist material used for the metal joist according to the embodiment.
FIG. 3 is an enlarged perspective view showing a part of the joist material.
4 is an enlarged cross-sectional view taken along line AA in FIG.
FIG. 5 is a perspective view showing the inside of a track material used for the metal joist according to the embodiment.
FIG. 6 is a perspective view showing the inside of the track material.
FIG. 7 is an enlarged perspective view showing a part of the track material.
FIG. 8 is an enlarged perspective view showing a locking material used for the metal joist according to the embodiment.
[Explanation of symbols]
1 metal joist, 2 joist material, 2a top, 2b hanging part,
3 Track material, 3a Top, 4 Anti-slip material,
4a, 4b falling wall, 5 hole for piping or wiring,
5a Rising wall,
6, 7, 8, 11, 12, 15 Pilot holes provided at the fixing or connecting part,
10 Rib-shaped convex part, 13, 14 Cut part.

Claims (3)

A plurality of joist materials disposed adjacent to each other at a predetermined interval;
A pair of track members for fixing or connecting and supporting both ends of the joist material;
It consists of a plurality of anti-roll materials fixed or connected in a bridging manner in the vicinity of approximately the middle of the arranged joist material,
The joist material is formed of a cross-sectional C-type channel material and provided with at least one hole for piping or wiring,
The track material is formed of a channel material having a U-shaped cross section, and a plurality of flaps for fixing or connecting and supporting the end portion of the joist material are formed at predetermined intervals.
The anti-slip material is formed of a channel material having a U-shaped cross section, and both end portions thereof are cut off the falling walls on both sides while leaving the approximate thickness of the joist material on the upper surface.
A metal joist characterized in that a pilot hole for screwing is provided in advance in a fixing or connecting portion of each constituent member. The flap in the track material is
The metal joist according to claim 1, wherein the metal joists are formed by cutting and raising, and rib-like protrusions for reinforcement are formed on both sides of the raised and raised portion. Joyst material, track material and anti-slip material
3. The metal joist according to claim 1, wherein the metal joist is formed of a hot dip galvanized steel sheet.

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