JP2019143423A - Panel fixing metal fitting and nut holding metal fitting, and fixing method and fixing structure of metal floor panel and beam material - Google Patents

Abstract

To provide a panel fixing metal fitting capable of securely realizing a bolt joint using a lock nut, in spite of being restricted to fixing work from an upper part of a metal floor panel.SOLUTION: A panel fixing metal fitting 1 comprises: an upper side member 2 positioned on and fixed to an upper face plate 10a of a metal floor panel 10; a lower side member 3 including a horizontal portion 3a abutting on a lower face of an upper flange 11a of a beam material 11; a connection bolt 4 penetrating both members 2,3 in a vertical direction; a nut holding member 5 attached to the lower side member 3; and a lock nut 6. The nut holding member 5 which holds the lock nut 6 non-rotatably is fitted onto the lower side member 3. In a state where the lower side member 3 and the upper side member 2 hold the upper flange 11a of the beam material 11 and the upper face plate 10a, the connection bolt 4 is screwed into the lock nut 6. Thus, the metal floor panel 10 can be fixed to the beam material 11.SELECTED DRAWING: Figure 1

Description

  This invention is a metal floor panel suitably used as a safety board, work floor of various factories, or a floor plate material for platforms, heliports, maintenance decks, etc. The present invention relates to a panel fixing bracket that belongs to the technical field of floor panels, and more specifically, is used for fixing the metal floor panel to a beam member.

A metal floor panel provided with slits for allowing air and light to pass through is formed by punching and bending a long and thin steel plate to form a substantially U-shaped cross-section of the upper surface plate and the side surface plate. In addition, a long slit in the panel width direction is continuously formed at a predetermined interval in the panel longitudinal direction.
This metal floor panel is formed into a predetermined planar region having a width of about 200 to 250 mm, a length of about 200 to 6000 mm (particularly about 1500 to 2000 mm), a height of about 40 to 60 mm, and a slit width of about 20 mm. On the other hand, the floor structure is constructed by laying continuously on the upper surface of the beam material (specifically, the upper surface of the upper flange of the beam material such as H-shaped steel) in the vertical and horizontal directions. In recent years, it has been carried out in various places such as factories and warehouses of modern facilities because of its advantages such as being able to maintain a bright and clean environment and being excellent in aesthetics.

  By the way, the said metal floor panel was being fixed to the beam material using the panel fixing metal fittings which were disclosed by patent document 1, 2, for example.

The panel fixing bracket according to Patent Document 1 is a fixture that fixes the panel to a beam using the slit of the metal floor panel, as shown in FIGS. As shown in FIG. 10 to FIG. 12 of the same document 1, the upper member 1 that is sandwiched between the upper surfaces of at least two adjacent bridges B and B, the lower member B, and one end Can be linked to the lower surface of the beam member, and the other end can be brought into contact with the lower surface of one of the bridges B. The upper member 1 and the lower member 2 are connected to each other, and the floor plate is tightened. It consists of a connecting bolt 3 that clamps the (metal floor panel) with the beam member with the upper member 1 and the lower member 2,
The upper member 1 enters the gap M between the bridges, and holds the connecting bolt 3 in a suspended manner, and at the bottom wall thereof is integrally formed with a recess 1a having a seat for the connecting bolt 3, and an upper end edge of the recess 1a. A flange portion 1b connected and placed on the upper surface of each bridge B;
The lower member 2 is located directly below the upper member 1 and is connected to a connecting bolt 3 suspended and held in the concave portion 1a via a screw portion, and a linkage arm portion whose tip portion can be linked to the lower surface of the beam member. 2a and a standing arm portion 2b that is integrally connected to the rear end portion of the linkage arm portion 2a and rises along the connecting bolt 3.
The upright arm portion 2b is provided with an abutting portion 4c capable of abutting against the lower surface of the bridge B, and is provided with a bent portion 4 that is tilted toward the distal end side of the linkage arm portion 2a. .

On the other hand, the panel fixing bracket according to Patent Document 2 uses a gap 8 formed between metal floor panels adjacent to each other in the panel width direction as shown in FIGS. As shown in FIG. 1 etc. of the same document 2, the floor plate (metal floor panel) 1 is placed on the beam 7 having a horizontal flange 7a on the upper surface. The floor plate fixing bracket 11 in the floor structure fixed to the beam 7 by the floor plate fixing bracket 11 at the intersection between the flange 7a edge of the beam 7 and the gap 8 while arranging the gap 8 in the width direction,
The upper metal fitting 13, the lower metal fitting 14, and a bolt 15 that joins both metal fittings,
The upper metal fitting 13 is a floor plate formed on both ends of the flat plate portion 16 in the width direction of the floor plate 16 and the flat plate portion 16 placed on the edge in the width direction of both floor plates 1 across the gap 8 between the adjacent floor plates 1. A downward projection 17 that can be engaged with one of the holes or the edge of the elongated hole, and a bolt insertion hole 18 that is formed at the center of the flat plate portion 16 in the floor plate width direction,
The lower metal member 14 includes a beam 7 and an engaging portion 21 that can be engaged with the lower surface of the flange 7a and engage with the beam 7, and the bolt 15 inserted from above into the bolt insertion hole 18 of the upper metal member 13 is screwed. A bolt coupling portion 22 having a screw hole 22a that can be mated is provided.

According to the panel fixing bracket according to Patent Document 1, when the connection bolt 3 is tightened, the contact bolt 3 can be loosened easily because the surface pressure of the connection bolt 3 against the bottom wall of the recess 1a can be increased. And a statement that the flooring (metal floor panel) can be firmly fixed to the beam for a long period of time under a relatively simplified structure (the end of paragraph [0011] of the specification, and [0042]).
Further, according to the panel fixing metal fitting according to Patent Document 2, although the installation site is different from the panel fixing metal fitting according to Patent Document 1, the upper metal fitting 13 has a recess corresponding to the recess 1a and the bottom wall of Patent Document 1. Form 19 and carry out. Therefore, it is presumed that the floor plate (metal floor panel) 1 can be firmly fixed to the beam member 7 for a long period of time without the bolt 15 being easily loosened, as in the above-mentioned Patent Document 1.

JP 2016-37815 A JP 2008-144553 A

However, with respect to fixing means using bolts (connection bolts) using the panel fixing metal fittings according to Patent Documents 1 and 2, the bottom wall is formed in the concave portion of the upper member (upper metal fitting) or the thread is increased. In this negative idea, it was obvious that the bolts loosened over time due to mechanical (engine) vibration transmitted to the metal floor panel or the influence of vibration such as wind and earthquake.
Therefore, for example, if a locking nut can be used as the fixing means, it is possible to reliably prevent bolts from loosening. Therefore, maintenance costs including safety check including bolt looseness of panel fixing brackets, which are usually used on one floor, are reduced. Although it is known that it can greatly contribute to the improvement of the metal floor panel, it cannot be realized because it is restricted by the fixing work (one-way work) from above the metal floor panel peculiar to this field.
That is, since it is restricted to the fixing work from above the metal floor panel, the locking nut cannot be reliably restrained with fingers or the like. Also, it is conceivable to weld and join the lower member (lower bracket) and the locking nut, but it is not realistic to weld the parts that have been pre-plated while maintaining the nut performance, and this can be realized temporarily. Even so, the lower member (lower metal fitting) and the locking nut would rotate together, and there was no motivation to adopt such as the work efficiency would be very different in the fixing work from above.

  Therefore, the present invention has been devised in view of the above-described problems of the background art, and the purpose thereof is loosening despite being restricted by the fixing work from above the metal floor panel. Bolt joints using lock nuts can be reliably realized. As a result, panel fixing brackets and nuts used in the panel fixing brackets can greatly contribute to reducing maintenance costs including bolt looseness check and improving safety. An object of the present invention is to provide a holding method and a fixing method and a fixing structure between a metal floor panel and a beam member using the panel fixing bracket.

As a means for solving the above-mentioned problems, the panel fixing bracket according to the invention described in claim 1 is a slit that is long in the panel width direction in the upper surface plate and has a substantially U-shaped cross section in the downward direction. Is a panel fixing bracket for fixing the metal floor panel to the beam material when laying the metal floor panel continuously provided at a predetermined interval in the panel longitudinal direction on the upper surface of the upper flange of the beam material Because
The panel fixing bracket includes an upper member that is positioned and fixed to the upper plate, a lower member that includes a horizontal portion that contacts the lower surface of the upper flange of the beam member, and a connecting bolt that penetrates both members in the vertical direction. A nut holding member that is attached to the lower member, and a locking nut, and the lower member is fitted with the nut holding member that holds the locking nut in a non-rotatable manner. The metal floor panel can be fixed to the beam member by screwing the connecting bolt into the locking nut while the upper flange of the beam member and the upper plate are sandwiched between the upper member and the upper member. It is characterized by being.

The invention described in claim 2 is the panel fixing bracket according to claim 1, wherein the panel fixing bracket fixes the metal floor panel to the beam using the slit.
The upper member has a concave portion that fits into the slit in the middle portion and is shaped to be placed on the upper surface plate, and the concave portion is provided with a bolt through hole penetrating in the vertical direction.
The lower member includes at least a horizontal portion that contacts the lower surface of the upper flange of the beam member, and is provided with a bolt through hole penetrating in the vertical direction;
The nut holding member is characterized in that it can be externally fitted to the lower member while holding the locking nut in a non-rotatable manner and can pass through the slit.

The invention described in claim 3 is the panel fixing bracket according to claim 1 or 2, wherein the locking nut is a flange locking nut.
The lower member is bent in a substantially L shape with a horizontal portion that contacts the lower surface of the upper flange of the beam member and a rising portion that contacts the lower surface of the upper plate, and penetrates the horizontal portion in the vertical direction. A bolt through hole is provided,
The nut holding member is slidably fitted on the horizontal portion of the lower member, and is provided with a nut through hole capable of supporting the flanged locking nut so as not to rotate. Features.

  According to a fourth aspect of the present invention, in the panel fixture according to any one of the first to third aspects, the upper member is provided with a downward projecting portion that engages with the slit at both ends thereof. It is characterized by that.

The invention described in claim 5 is the panel fixing bracket according to claim 1, wherein the panel fixing bracket utilizes the gap when laying the metal floor panel with a gap in the panel width direction. When fixing metal floor panels to beams,
The upper member has a concave portion that fits into the gap in the middle portion, and is shaped to be placed on the upper surface plate of the left and right metal floor panels, and is directed downwardly so as to hang on the slits of the left and right metal floor panels at both ends of the panel width direction. A protrusion is provided, and the concave portion is provided with a bolt through hole penetrating vertically.
The lower member includes at least a horizontal portion that contacts the lower surface of the upper flange of the beam member, and is provided with a bolt through hole penetrating in the vertical direction;
The nut holding member is characterized in that it has a shape that can be fitted onto the lower member while holding the locking nut in a non-rotatable manner.

According to a sixth aspect of the present invention, in the panel fixture according to the first or fifth aspect, the lower member is a side view including an upper and lower horizontal portion and a connecting portion capable of receiving the upper flange of the beam member. Is substantially U-shaped, and is formed in a generally downward U-shape with a long and narrow front view, and a bolt through hole penetrating in the vertical direction is provided in the upper horizontal portion,
The nut holding member has a shape that is externally fitted to the upper horizontal portion of the lower member, and is provided with a bolt through hole that penetrates in the vertical direction. When the nut holding member is externally fitted to the upper horizontal portion, the bolt A feature is that the locking nut can be placed in a non-rotatable state immediately above the through hole.

  The invention described in claim 7 is the panel fixing bracket according to any one of claims 1 to 6, wherein the nut holding member is formed in a lip groove shape opening upward. .

  A nut holding member according to an eighth aspect of the present invention is a nut holding member used in the panel fixing bracket according to any one of the first to seventh aspects, wherein the nut holding member is formed in a lip groove shape opening upward, and the lower When attached to the side member, the locking nut is formed in a shape capable of being held in a non-rotatable manner.

The method for fixing a metal floor panel and a beam material according to the invention described in claim 9 includes a metal floor panel and a beam material using the panel fixing bracket according to any one of claims 1 to 4 and 7. Fixing method,
When the panel fixing bracket fixes the metal floor panel to a beam using the slit,
The panel fixing bracket in a state in which the nut holding member is connected in a skewered manner with a connecting bolt inserted from above the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably. The lower member is inserted into the predetermined slit of the metal floor panel from above, and the orientation is rotated by approximately 90 degrees, and then positioned immediately below the upper flange of the beam material. The metal floor panel is fixed to the beam member while being further screwed into the locking nut to hold the upper flange and the upper plate of the beam member between the lower member and the upper member. To do.

A method for fixing a metal floor panel and a beam material according to the invention described in claim 10 includes a metal floor panel and a beam material using the panel fixing bracket according to any one of claims 1 and 5-7. Fixing method,
When the panel fixing bracket is used to fix the metal floor panel to a beam using the gap when laying the metal floor panel with a gap in the panel width direction,
The panel fixing bracket in a state in which the nut holding member is connected in a skewered manner with a connecting bolt that is inserted from above the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably. The lower member is inserted into the gap from above, and is positioned by sliding it directly below the upper flange of the beam member. After that, the connecting bolt is further screwed into the locking nut, thereby the lower member and The metal floor panel is fixed to the beam member while sandwiching the upper flange of the beam member and the upper surface plate with the upper member.

The fixing structure of the metal floor panel and the beam material according to the invention described in claim 11 is a fixing structure of the metal floor panel and the beam material using the panel fixing bracket according to any one of claims 1 to 7. Because
The panel fixing bracket, wherein the nut holding member is connected in a skewered manner with a connecting bolt in which the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably are inserted from above. The connecting bolt is screwed into the locking nut in a state where the upper flange of the beam member and the upper surface plate are sandwiched between the lower member and the upper member.

According to the panel fixing bracket, the nut holding member used in the panel fixing bracket, and the fixing method and the fixing structure between the metal floor panel and the beam member using the panel fixing bracket, the following effects are obtained. .
(1) Despite the fixing work (one-way work) from above the metal floor panel, it is possible to reliably realize bolt joining using a locking nut. Therefore, as a result, it is possible to drastically contribute to the reduction of maintenance cost and the improvement of safety including checking the looseness of the connecting bolts of the panel fixing brackets used in thousands on one floor.
(2) Since the structure which hold | maintains the said locking nut in a non-rotatable state is simple and can be implement | achieved at low cost, it is excellent in economical efficiency. Further, since it does not rotate with the lower member at all, it is excellent in workability (operability).

It is the front view which showed the panel fixing metal fitting which concerns on Example 1 in substantially full size. 1 is an exploded perspective view of a panel fixing bracket according to Embodiment 1. FIG. It is the top view which showed the fixation structure of the metal floor panel and beam material using the panel fixing bracket which concerns on FIG. FIG. 4 is a cross-sectional view taken along line QQ in FIG. 3. It is a top view of the panel fixing metal fitting concerning FIG. It is a bottom view of the panel fixing metal fitting concerning FIG. It is a right view of the panel fixing metal fitting concerning FIG. It is a left view of the panel fixing metal fitting concerning FIG. FIG. 6 is a cross-sectional view taken along line RR in FIG. 5. It is SS sectional view taken on the line of FIG. FIG. 2 is a cross-sectional view taken along line P-P in FIG. 1. A is an enlarged perspective view of the nut holding member according to FIG. 1, and B is a perspective view showing a variation of the nut holding member. It is the front view which showed the panel fixing metal fitting which concerns on Example 2 in substantially full size. It is a disassembled perspective view of the panel fixing metal fitting which concerns on Example 2. FIG. It is the top view which showed the fixation structure of the metal floor panel and beam material using the panel fixing bracket which concerns on FIG. It is the front view which showed the fixation structure of the metal floor panel and beam material using the panel fixing bracket which concerns on FIG. It is a top view of the panel fixing metal fitting concerning FIG. FIG. 14 is a bottom view of the panel fixing bracket according to FIG. 13. FIG. 14 is a right side view of the panel fixture according to FIG. 13. FIG. 14 is a left side view of the panel fixing bracket according to FIG. 13. FIG. 18 is a cross-sectional view taken along the line U-U in FIG. 17. It is the VV arrow directional cross-sectional view of FIG. FIG. 14 is a cross-sectional view taken along line T-T in FIG. 13. A to E are a front view, a plan view, a bottom view, a right side view, and a left side view, respectively, illustrating a state in which a locking nut is placed on the nut holding member according to FIG.

The panel fixing bracket according to the present invention is a panel fixing bracket used for fixing a metal floor panel to a beam material. More specifically, the panel fixing bracket uses a locking nut that has not existed in this technical field. It is a panel fixing bracket that can fix the floor panel to the beam.
The panel fixing bracket is for fixing the metal floor panel and the beam material mainly using the slit of the metal floor panel. However, the present applicant is not limited to this type, and the applicant of the present application intends to increase the fixing strength. There is also a type in which a gap is formed between adjacent metal floor panels, and the metal floor panel and the beam material are fixed using the gap, as in the above-described Patent Document 2. The former will be described in Example 1, and the latter will be described in Example 2.
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a panel fixing bracket, a nut holding member, a method for fixing a metal floor panel and a beam, and a fixing structure according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 12 (particularly FIGS. 1 to 4), the panel fixing bracket according to the first embodiment has a substantially U-shaped cross-section with a top plate 10a and a side plate 10b. When the metal floor panel 10 in which the slits S long in the panel width direction are continuously provided in the panel longitudinal direction at a predetermined interval on the face plate 10a is laid on the upper surface of the upper flange 11a of the beam member 11, the metal This is a panel fixing bracket 1 for fixing the floor panel 10 to the beam member 11.
The panel fixing bracket 1 according to the first embodiment uses a slit S of the metal floor panel 10 and is a panel of the type that fixes the metal floor panel 10 to the beam member 11 by work from above the slit S. It is a fixture.

The panel fixing bracket 1 includes an upper member 2 that is positioned and fixed to the upper surface plate 10a, a lower member 3 that includes a horizontal portion 3a that contacts the lower surface of the upper flange 11a of the beam member 11, both members 2, 3 includes a connecting bolt 4 penetrating through 3 in the vertical direction, a nut holding member 5 attached to the lower member 3, and a locking nut 6.
The lower member 3 is externally fitted with the nut holding member 5 that holds the locking nut 6 in a non-rotatable manner. The lower member 3 and the upper member 2 are connected to the upper flange 11a of the beam member 11 and The metal floor panel 10 can be fixed to the beam member 11 by screwing the connecting bolt 4 into the locking nut 6 in a state where the upper surface plate 10a is sandwiched.

More specifically, the upper member 2 has a concave portion 2a that fits into the slit S in the middle portion and is placed on the upper surface plate 10a. The concave portion 2a has a bolt through hole 2b that penetrates in the vertical direction. Is provided. Furthermore, downward projections 2d that extend on both ends of the slit S and prevent the rotation in the horizontal direction and facilitate the positioning operation are extended.
The lower member 3 has a groove-shaped cross section that opens upward, and is an abbreviation of a horizontal portion 3a that contacts the lower surface of the upper flange 11a of the beam member 11 and a rising portion 3b that contacts the lower surface of the upper surface plate 10a. The horizontal portion 3a is formed with a bolt through hole 3c penetrating in the vertical direction.
The locking nut 6 is a locking nut 6 with a flange 6a, and the nut holding member 5 can be externally fitted to the lower member 3 while holding the locking nut 6 non-rotatable, and It is formed in a width that can pass through the slit S.

The upper member 2 according to the present embodiment is provided with a positioning through-hole 2c so that it can easily correspond to the metal floor panel 10 in which protrusions such as convex embosses are formed on the upper surface plate 10a. It has been.
That is, the metal floor panel 10 is of a type in which the top plate 10a is flat as shown in FIGS. 3 and 4, and although not shown, the top plate 10a has a number of convex embosses (projections) for preventing slippage. Although there exists the formed non-slip type, the panel fixing metal fitting 1 which concerns on this invention can be implemented suitably with respect to both.

Next, the nut holding member 5 and the locking nut 6 which are main features of the present invention will be further described.
The nut holding member 5 is slidably fitted to the horizontal portion 3a of the lower member 3 and has a nut through hole 5a capable of supporting the locking nut 6 with the flange 6a so as to be non-rotatably supported. It is formed in a lip groove shape that is provided and opens upward.
In other words, the present invention is characterized in that a loosening prevention nut 6 with a flange 6a is used instead of a simple loosening prevention nut, and the loosening prevention nut 6 is passed through non-rotatably but the flange 6a is not passed. The nut holding hole 5 is formed in the nut holding member 5 (see FIG. 11 and the like). Due to such a shape characteristic, the nut holding member 5 rotates the locking nut 6. The structure which can be supported without suspension is realized.
Further, in the present invention, the nut holding member 5 is formed in a lip groove shape opening upward, and the left and right lip portions 5b and 5b are the upper and lower edge rail portions 3d of the horizontal portion 3a of the lower member 3. 3d, the nut holding member 5 suspends and supports the locking nut 6 with the flange 6a in a non-rotatable state while supporting the lower side. A unique configuration is realized in which the horizontal portion 3a of the member 3 is supported so as to be slidable.

The nut through-hole 5a may have a shape that allows the locking nut 6 to pass through in a non-rotatable manner, and can be implemented in a hexagonal shape in addition to a rectangular shape (see FIGS. 12A and 12B).
Further, the nut holding member 5 having the lip groove shape may be appropriately changed in design, such as by partially cutting off the upper half portion that interferes with the rising portion 3b of the lower member 3, as shown in FIG. By the way.

The metal floor panel 10 is formed by punching and bending a long and narrow steel plate, and has a substantially U-shaped cross-section with a top plate 10a and a side plate 10b having an inward lip extending at the lower end. None, the upper plate 10a is manufactured as a structure in which slits S that are long in the panel width direction are continuously formed at predetermined intervals in the panel longitudinal direction.
The metal floor panel 10 is implemented with a width of about 200 to 250 mm, a length of about 200 to 6000 mm (particularly 1500 to 2000 mm), a height of about 60 mm, and a slit (S) width of about 20 mm.

Next, the size of the panel fixture 1 will be described.
The upper member 2 has a plate thickness of about 2.3 mm and a width of about 48 mm and a length of 70 mm, which is sufficiently wider than the width of the slit S (about 20 mm) to prevent falling into the slit S. The height (depth) of the recess 2a is about 6.5 mm (see FIG. 9) so that the head of the connecting bolt 4 does not protrude upward for safety reasons, and the diameter of the bolt through hole 2b is about 9 mm downward. The height of the protrusion 2d is about 13 mm.
The lower member 3 has a plate thickness of about 2.3 mm, a width of about 17.5 mm that can pass through the slit S, a length (see reference symbol X in FIG. 9) of about 96 mm, and a height (reference symbol Y). Reference) is about 58 mm, and the diameter of the bolt through hole 3 c is about 9 mm.
The connecting bolt (head bolt) 4 has an axial diameter of 8 mm (M8) and a total length of about 87 mm. The locking nut 6 with the flange 6 a has a standard (size) corresponding to the connecting bolt 4. Adopted.
The nut holding member 5 has a thickness of about 0.6 mm, a height of about 17 mm, a width of about 19 mm that can pass through the slit S, the size of the nut through hole 5a is about 13 × 15 mm, and the lip portion 5b. The width dimension is about 4.5 mm.
Note that the above dimensions are merely examples, and the design can be changed as appropriate according to the structural design.

  Next, a method for fixing the metal floor panel 10 and the beam member 11 using the panel fixing bracket 1 having the above configuration will be described.

First, before carrying in to the site as a preparation stage, the panel fixing bracket 1 is combined with each member such as the upper member 2 shown in FIG. 2 and integrated into a skewer shape with a connecting bolt 4 as shown in FIG. Keep it. In addition to increasing the work efficiency at the site, it is for preventing the above-mentioned members from falling (mainly from the slits S) and preventing loss.
Specifically, the locking nut 6 is non-rotatably mounted on the nut holding member 5 (the nut through hole 5a) using the flange 6a, and the locking nut 6 is mounted non-rotatably. The holding member 5 is fitted on the horizontal portion 3a of the lower member 3 and is slid. When the nut holding member 5 is slid to the vicinity of the base end portion of the horizontal portion 3a, the core of the locking nut 6 attached to the nut holding member 5 and the core of the bolt through hole 3c drilled in the horizontal portion 3a. And with the cores aligned, the lower end of the connecting bolt 4 is connected to the bolt through hole 2b of the upper member 2, the bolt through hole 3c of the lower member 3, The panel fixing bracket 1 is integrated in a skewered manner by passing through the nut holding hole 5a of the nut holding member 5 in order and screwing into the locking nut 6b.

When the preparation is completed, the panel fixing bracket 1 carried into the site has previously loosened the connecting bolt 4 as compared with the state of FIG. 1, and the nut holding member 5 prevents the locking nut 6 from rotating. The lower member 3 that is externally fitted while being held is inserted from above into a predetermined slit S near the beam member 11, and the horizontal portion 3 a of the lower member 3 is inserted into the upper flange of the beam member 11. It is located below the lower surface of 11a (see FIGS. 3 and 4).
Next, the direction of the horizontal portion 3a of the lower member 3 is rotated by approximately 90 degrees and then pulled up to bring the horizontal portion 3a into contact with the lower surface of the upper flange 11a of the beam member 11 and the rising portion 3b. The upper end is brought into contact with the lower surface (back surface) of the upper surface plate 10 a of the metal floor panel 10.
Next, by further screwing the connecting bolt 4 into the locking nut 6, the upper member 2 is placed on the upper surface plate 10 a with its recess 2 a fitted into the corresponding slit S, thereby The metal floor panel 10 is fixed to the beam member 11 with the side member 3 and the upper member 2 sandwiching the upper flange 11a of the beam member 11 and the upper surface plate 10a.
The screwing operation of the connecting bolt 4 can be performed without causing the locking nut 6 to rotate together with the lower member 3, so that a smooth and stress-free operation can be realized.
The above-described work process is repeated according to the number of panel fixing brackets 1 to realize a fixing structure between the metal floor panel 10 and the beam member 11, and thus a floor structure is constructed.

  Thus, in the fixing structure of the metal floor panel 10 and the beam member 11 using the panel fixing bracket 1, the nut holding member 5 is externally fitted while the locking nut 6 is held non-rotatably. The upper flange 11a of the beam member 11 is formed by the lower member 3 and the upper member 2 of the panel fixing bracket 1 connected in a skewered manner with a connecting bolt 4 through which the member 3 and the upper member 2 are inserted from above. And the upper surface plate 10a are sandwiched between the connecting bolts 4 and screwed into the locking nuts 6.

Accordingly, the panel fixing bracket 1 according to the present invention, the nut holding member 5 used in the panel fixing bracket 1, and the fixing method and fixing structure between the metal floor panel 10 and the beam member 11 using the panel fixing bracket 1 are provided. According to this, the bolt joint using the locking nut 6 can be reliably realized despite the fixing work (one-way work) from above the slit S of the metal floor panel 10. Therefore, as a result, it is possible to drastically contribute to the reduction of maintenance costs and the improvement of safety including the check of looseness of the connecting bolts 4 of the panel fixing bracket 1 used on the one floor.
Moreover, since the structure which hold | maintains the said locking nut 6 in a non-rotatable state is simple and can be implement | achieved at low cost, it is excellent in economical efficiency. Moreover, since it does not rotate with the lower member 3 at all, it is excellent in workability (operability).

13 to 24 show the panel fixture 21 according to the second embodiment.
The panel fixing bracket 21 according to the second embodiment employs means for fixing the panel fixing bracket 1 according to the first embodiment using the slits S of the metal floor panel 10, whereas FIG. As shown, when the metal floor panel 10 is laid with a gap T in the panel width direction, means for fixing the metal floor panel 10 to the beam member 11 using the gap T is adopted. The point is different. Since the metal floor panel 10 and the beam member 11 have the same configuration as in the first embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.

The panel fixing bracket 21 according to the second embodiment includes an upper member 22 that is positioned and fixed to the upper surface plate 10a of the metal floor panel 10, and a horizontal portion 23a that contacts the lower surface of the upper flange 11a of the beam member 11. The lower member 23, a connecting bolt 24 that penetrates both members 22, 23 in the vertical direction, a nut holding member 25 attached to the lower member 23, and a locking nut 26.
The lower member 23 is externally fitted with a nut holding member 25 that holds the locking nut 26 in a non-rotatable manner. The lower member 23 and the upper member 22 connect the upper flange 11a of the beam member 11 to the lower member 23. The metal floor panel 10 can be fixed to the beam member 11 by screwing the connecting bolt 24 into the locking nut 26 in a state where the top plate 10a is sandwiched.

More specifically, the upper member 22 has a concave portion 22a that fits into the gap T in the middle portion, and is shaped to be placed on the upper surface plates 10a, 10a of the left and right metal floor panels 10, 10, and in the panel width direction. Downward projections 22c and 22c that are latched on the slits S and S of the left and right metal floor panels 10 and 10 are provided at both ends, and a bolt through hole 22b that penetrates in the vertical direction is provided in the recess 22a.
The lower member 23 includes at least a horizontal portion 23a that comes into contact with the lower surface of the upper flange 11a of the beam member 11, and is provided with a bolt through hole 23d penetrating in the vertical direction. Specifically, the side view (see FIG. 13) composed of the upper and lower horizontal portions 23b, 23a and the connecting portion 23c capable of receiving the upper flange 11a of the beam member 11 is substantially U-shaped, and the front view (see FIG. 20). ) Is formed in an elongated, generally U-shaped downward shape.
The nut holding member 2 has a shape that can be fitted onto the lower member 23 (the upper horizontal portion 23b thereof) while holding the locking nut 26 non-rotatable. Specifically, a bolt through hole 25a penetrating in the vertical direction is provided, and when the outer horizontal part 23b is externally fitted, the locking nut 26 can be placed in a non-rotatable state directly above the bolt through hole 25a. It is configured. That is, the inner width dimension of the upper horizontal portion 23b is set longer than the opposite dimension of the locking nut 26 to be used and shorter than the diagonal dimension. The outer diameter of the bolt through hole 25a is set smaller than the outer diameter of the nut.

Next, the nut holding member 25 and the locking nut 26 which are main features of the present invention will be further described.
The nut holding member 25 has a basic lip groove shape that can be fitted on the upper horizontal portion 23b of the lower member 23 and opens upward, and further has a bottom extending portion 25c and a nut drop prevention piece 25d on the front side. It has. The bottom surface extending portion 25c is shorter than the diagonal dimension of the locking nut 26 and has a width dimension that can be horizontally inserted into the elongated downward substantially U-shape of the lower member 23 (upper horizontal portion 23b). The nut drop prevention piece 25d is set to have a width and a height that do not interfere with the elongated downward substantially U-shape.
Further, when the nut holding member 25 is fitted on the upper horizontal portion 23b and is positioned against the downward slope portion of the upper horizontal portion 23b, the bolt of the upper horizontal portion 23 is positioned on the bottom extending portion 25c. The bolt through hole 25a is provided at a portion where the core substantially coincides with the through hole 23d.

Next, the size of the panel fixture 21 will be described.
The upper member 22 has a plate thickness of about 2.3 mm, a width dimension of about 54 mm, which is sufficiently wider than the gap T, a length of about 70 mm, and the height (depth) of the recess 2a. For this reason, the head of the connecting bolt 24 is about 9 mm (see FIG. 21), the diameter of the bolt through hole 22b is about 9 mm, and the height of the downward projection 22c is about 10 mm.
The lower member 23 is formed by bending a steel plate (plate thickness of about 2.3 mm) punched into a predetermined shape into the above-described elongated downward substantially U-shape (width dimension is about 18 mm, vertical dimension is about 67 mm). The diameter of the bolt through hole 23d is about 9 mm.
The connecting bolt (head bolt) 24 has an axial diameter of 8 mm (M8) and an axial length of about 55 mm, and the locking nut 26 adopts a standard (size) corresponding to the connecting bolt 24. .
The nut holding member 25 has a plate thickness of about 0.5 mm, a height of about 15 mm, a width of about 19.4 mm, and a diameter of the bolt through hole 25a of about 9 mm.
Note that the above dimensions are merely examples, and the design can be changed as appropriate according to the structural design.

  Next, a method for fixing the metal floor panel 10 and the beam member 11 using the panel fixing bracket 21 having the above configuration will be described.

First, before carrying in to the site as a preparation stage, the panel fixing bracket 21 is combined with each member such as the upper member 22 shown in FIG. 14 and integrated into a skewer shape with a connecting bolt 24 as shown in FIG. Keep it. In addition to increasing the work efficiency at the site, it is for preventing the members from falling and losing.
Specifically, the loosening prevention nut 26 is externally fitted and pushed into the upper horizontal portion 23b of the lower member 23 while being placed on the bolt passage hole 25a of the nut holding member 25 so that the core is aligned. Slide). Since the inner width dimension of the upper horizontal portion 23b is set to be longer than the opposite dimension of the loosening prevention nut 26 and shorter than the diagonal dimension, the locking nut 26 is maintained in a non-rotatable state. Is done.
Next, in a state where the cores of the bolt through hole 25a, the locking nut 26, and the bolt through hole 23c of the upper horizontal portion 23a are aligned, the lower end of the connecting bolt 24 is connected to the bolt through of the upper member 22. The panel fixing bracket 21 is integrated in a skewered manner by passing through the hole 22b and the bolt through hole 23c of the lower member 23 in order, screwing into the locking nut 26b, and passing through the bolt through 25a. .

When the preparation is completed, the panel fixing bracket 21 carried into the site has previously loosened the connecting bolt 24 as compared with the state of FIG. 13, and the nut holding member 25 prevents the locking nut 26 from rotating. The lower member 23 that is externally fitted while being held is inserted into the gap T from above, and the upper flange 11a of the beam member 11 is sandwiched between the upper and lower horizontal portions 23b and 23a as shown in FIG. Slide to position. In addition, when the positioning is performed, a device such as substantially aligning the upper member 22 of the panel fixture 21 and the panel longitudinal end of the metal floor panel 10 is appropriately performed from various viewpoints such as work and aesthetics. It is where it is said.
Next, the connecting bolt 24 is further screwed into the locking nut 26. The loosening prevention nut 26 placed on the bottom extending portion 25c of the nut holding member 25 (see FIG. 24) rises while gradually rotating upward by the screwing operation of the connecting bolt 24, and finally FIG. As shown in FIG. 3, the lower member 23 and the upper member 22 abut against and contact with the lower surface of the upper horizontal portion of the lower member 23, so that the upper flange 11a and the upper surface plate 10a of the beam member 11 are The metal floor panel 10 is fixed to the beam member 11 while sandwiching.
The screwing operation of the connecting bolt 24 can be performed without causing the locking nut 26 to rotate and without rotating together with the lower member 23, so that a smooth and stress-free operation can be realized.
The above-described operation process is repeated according to the number of the panel fixing brackets 21 to realize a fixing structure between the metal floor panel 10 and the beam member 11, thereby constructing a floor structure.

  Thus, the fixing structure of the metal floor panel 10 and the beam member 11 using the panel fixing bracket 21 is such that the nut holding member 25 is externally fitted while the locking nut 26 is held non-rotatably. The upper flange 11a of the beam member 11 is formed by the lower member 23 and the upper member 22 of the panel fixing bracket 21 connected in a skewered manner with a connecting bolt 24 through which the member 23 and the upper member 22 are inserted from above. And the upper surface plate 10a are clamped, and the connecting bolt 24 is screwed into the locking nut 26.

Accordingly, the panel fixing bracket 21 according to the present invention, the nut holding member 25 used in the panel fixing bracket 21, and the fixing method and fixing structure between the metal floor panel 10 and the beam member 11 using the panel fixing bracket 21 are provided. According to this, the bolt joint using the locking nut 26 can be reliably realized despite the fixing work (one-way work) from above the gap T formed between the adjacent metal floor panels 10 and 10. Therefore, as a result, it is possible to drastically contribute to the reduction of the maintenance cost and the improvement of the safety including the looseness check of the connecting bolt 24 of the panel fixing bracket 21 used on the one floor.
Moreover, since the structure which hold | maintains the said locking nut 26 in a non-rotatable state is simple and can be implement | achieved at low cost, it is excellent in economical efficiency. Moreover, since it does not rotate with the lower member 23 at all, it is excellent in workability (operability).

  Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

DESCRIPTION OF SYMBOLS 1 Panel fixing bracket 2 Upper member 2a Recessed part 2b Bolt through hole 2c Through hole 2d Downward protrusion 3 Lower member 3a Horizontal part 3b Standing part 3c Bolt through hole 3d Upper edge rail part 4 Connecting bolt 5 Nut holding member 5a Nut through hole 5b Lip part 6 Locking nut 6a Flange 10 Metal floor panel (floor panel)
10a Top plate 10b Side plate 11 Beam 11a Upper flange S Slit 21 Panel fixing bracket 22 Upper member 22a Recess 22b Bolt through hole 22c Downward projection 23 Lower member 23a (Lower) Horizontal portion 23b (Upper) Horizontal portion 23c Connecting portion 23d Bolt Through hole 24 Connecting bolt 25 Nut holding member 25a Bolt through hole 25b Lip portion 25c Bottom extending portion 25d Nut fall prevention piece 26 Loosening prevention nut

Claims (11)

The top plate and the side plate have a substantially U-shaped cross section facing downward, and a metal floor panel in which slits long in the panel width direction are continuously provided at predetermined intervals in the panel longitudinal direction on the top plate is a beam material A panel fixing bracket for fixing the metal floor panel to the beam when laying on the upper surface of the upper flange,
The panel fixing bracket includes an upper member that is positioned and fixed to the upper plate, a lower member that includes a horizontal portion that contacts the lower surface of the upper flange of the beam member, and a connecting bolt that penetrates both members in the vertical direction. A nut holding member that is attached to the lower member, and a locking nut, and the lower member is fitted with the nut holding member that holds the locking nut in a non-rotatable manner. The metal floor panel can be fixed to the beam member by screwing the connecting bolt into the locking nut while the upper flange of the beam member and the upper plate are sandwiched between the upper member and the upper member. Panel fixing bracket, characterized in that. When the panel fixing bracket fixes the metal floor panel to a beam using the slit,
The upper member has a concave portion that fits into the slit in the middle portion and is shaped to be placed on the upper surface plate, and the concave portion is provided with a bolt through hole penetrating in the vertical direction.
The lower member includes at least a horizontal portion that contacts the lower surface of the upper flange of the beam member, and is provided with a bolt through hole penetrating in the vertical direction;
The nut holding member is configured to be able to be externally fitted to the lower member while holding the locking nut non-rotatably and to be able to pass through the slit,
The panel fixing metal fitting according to claim 1, characterized by each of the above. The locking nut is a locking nut with a flange;
The lower member is bent in a substantially L shape with a horizontal portion that contacts the lower surface of the upper flange of the beam member and a rising portion that contacts the lower surface of the upper plate, and penetrates the horizontal portion in the vertical direction. A bolt through hole is provided,
The nut holding member is slidably fitted on the horizontal portion of the lower member, and is provided with a nut through hole capable of supporting the flanged locking nut so as not to rotate. The panel fixing bracket according to claim 1, wherein the panel fixing bracket is characterized.   The panel fixing bracket according to any one of claims 1 to 3, wherein the upper member is provided with downward projections that are hooked to the slits at both ends thereof. When the panel fixing bracket is used to fix the metal floor panel to a beam using the gap when laying the metal floor panel with a gap in the panel width direction,
The upper member has a concave portion that fits into the gap in the middle portion, and is shaped to be placed on the upper surface plate of the left and right metal floor panels, and is directed downwardly so as to hang on the slits of the left and right metal floor panels at both ends of the panel width direction. A protrusion is provided, and the concave portion is provided with a bolt through hole penetrating vertically.
The lower member includes at least a horizontal portion that contacts the lower surface of the upper flange of the beam member, and is provided with a bolt through hole penetrating in the vertical direction;
The nut holding member has a shape that can be fitted onto the lower member while holding the locking nut in a non-rotatable manner,
The panel fixing metal fitting according to claim 1, characterized by each of the above. The lower member is formed in a substantially U shape in a side view composed of upper and lower horizontal portions and a connecting portion capable of receiving the upper flange of the beam member, and is formed in a substantially downward U shape in a front view. The horizontal part is provided with a bolt through hole penetrating in the vertical direction,
The nut holding member has a shape that is externally fitted to the upper horizontal portion of the lower member, and is provided with a bolt through hole that penetrates in the vertical direction. When the nut holding member is externally fitted to the upper horizontal portion, the bolt The panel fixing bracket according to claim 1 or 5, wherein the loosening prevention nut can be placed in a non-rotatable state immediately above the through hole.   The panel fixing bracket according to any one of claims 1 to 6, wherein the nut holding member is formed in a lip groove shape opening upward.   It is a nut holding member used for the panel fixing metal fitting in any one of Claims 1-7, Comprising: It forms in the lip groove shape opened upwards, and when it attaches to the said lower side member, the said locking nut cannot be rotated. A nut holding member characterized by having a shape that can be held by the nut. A method for fixing a metal floor panel and a beam using the panel fixing bracket according to any one of claims 1 to 4,
When the panel fixing bracket fixes the metal floor panel to a beam using the slit,
The panel fixing bracket in a state in which the nut holding member is connected in a skewered manner with a connecting bolt inserted from above the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably. The lower member is inserted into the predetermined slit of the metal floor panel from above, and the orientation is rotated by approximately 90 degrees, and then positioned immediately below the upper flange of the beam material. The metal floor panel is fixed to the beam member while being further screwed into the locking nut to hold the upper flange and the upper plate of the beam member between the lower member and the upper member. To fix the metal floor panel and beam. A method of fixing a metal floor panel and a beam using the panel fixing bracket according to any one of claims 1 and 5-7,
When the panel fixing bracket is used to fix the metal floor panel to a beam using the gap when laying the metal floor panel with a gap in the panel width direction,
The panel fixing bracket in a state in which the nut holding member is connected in a skewered manner with a connecting bolt that is inserted from above the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably. The lower member is inserted into the gap from above, and is positioned by sliding it directly below the upper flange of the beam member. After that, the connecting bolt is further screwed into the locking nut, thereby the lower member and A method for fixing a metal floor panel and a beam material, wherein the metal floor panel is fixed to the beam material while sandwiching an upper flange of the beam material and the upper surface plate with the upper member. A fixing structure of a metal floor panel and a beam using the panel fixing bracket according to any one of claims 1 to 7,
The panel fixing bracket, wherein the nut holding member is connected in a skewered manner with a connecting bolt in which the lower member and the upper member that are externally fitted while holding the locking nut non-rotatably are inserted from above. The metal floor panel, wherein the connecting bolt is screwed into the locking nut in a state where the upper flange and the upper plate are sandwiched between the lower member and the upper member And fixed structure of beams.

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