JP2565091Y2 - Ceiling suspension bracket for deck plate - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ceiling deck plate attached to a concrete slab, in particular, a deck plate in which a ridge portion having a triangular cross section is integrally formed on a lower surface side (generally referred to as a high deck, F deck, etc.). The present invention relates to a ceiling hanging metal fitting for a deck plate used for hanging a duct, an electric wiring and the like by a hanging bolt by being attached to the above-mentioned ridge portion.

[0002]

2. Description of the Related Art Conventionally, there has not been provided a ceiling hanging bracket which can be easily and easily attached to a deck plate having a ridge as described above. Therefore, when suspending bolts are suspended from this kind of deck plate, appropriate fittings for supporting the suspending bolts are fixed to the ridges of the deck plate by welding, but the welding work is extremely troublesome. Further, there is a problem that it is difficult to adjust or change the mounting position once welding is performed.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a ceiling hanging bracket which can be easily and easily mounted on a deck plate, and whose mounting position can be adjusted and changed.

[0004]

In order to achieve the above object, the present invention provides a deck plate ceiling suspension fitting comprising a pair of right and left holding pieces for holding a triangular ridge of a cross section of a deck plate on a fitting body. A pair of springs that open and close freely by two laterally spaced support shafts and that urge both holding pieces in the opening direction are provided in parallel, and penetrate through the center of the bracket body between the support shafts. The heads of the non-rotatable bolts are positioned on the inner ends of the two holding pieces, and the two holding pieces are tightened by fastening the suspension bolt connecting fasteners screwed into the bolts projecting below the bracket body. Is configured to be closed and fixed.

[0005]

Embodiments will be described with reference to the drawings.
FIGS. 1 to 3 show a ceiling hanging bracket 1 for a deck plate according to the present invention. The ceiling hanging bracket 1 includes a pair of left and right holding pieces 3 and 3 on a bracket main body 2 having an upward U-shaped cross section.
Are supported by two support shafts 4 and 4 horizontally spaced apart from each other so as to be openable and closable, and a spring 5 for urging the pair of holding pieces 3 and 3 in the opening movement direction is connected to both holding pieces. A hexagonal head 6a of a clamping piece locking bolt 6 which is interposed between the brackets 3 and 3 and the metal fitting main body 2 and vertically penetrates a central portion between the two support shafts 4 and 4 in the metal fitting main body 2 is provided. The screw portion 6b of the bolt 6 which is fitted between the inner ends of the holding pieces 3 and 3 in a non-rotatable state and protrudes below the metal fitting body 2.
Then, a fastening body 7 for hanging bolt connection is screwed therein.

The above structure will be described in more detail. As is clear from FIG.
a, 2a and a bottom wall 2b connecting them are formed in an upward U-shaped cross section. Bolt insertion holes 2c are provided in the center of the bottom wall 2b, and support shafts are provided at both ends of each side wall 2a. An insertion hole 2d is provided. Each of the holding pieces 3 is substantially L in side view.
And a bottom wall 3b connecting these, and a support shaft insertion hole 8 is provided in each side wall 3a, and an inner end of the bottom wall 3b is connected to a screw portion 6b side peripheral surface of the bolt 6. An arcuate engaging recess 9 is formed which can be fitted. The inner ends of both side walls 3a, 3a of each holding piece 3 protrude from the inner ends of the bottom wall 3b, so that the holding state with the bolt head 6b is maintained even when the holding pieces 3, 3 are in the open position. A projecting piece 3c that can be held is formed.

The spring 5 is formed of a leaf spring whose central portion projects upward in a curved shape, and has a bolt insertion hole 10 through which the bolt 6 is inserted at the center of the projection. 1 and 2, the bolt 6 is screwed into the upper part, and the ceiling hanging fitting 1 is inserted into the lower part. After the mounting, the upper ends of the suspension bolts 11 for suspending the ducts, the electric wiring, and the like are screwed into and connected to each other. FIG.
In FIG. 2, reference numeral 12 denotes a deck plate generally called an F deck, which is attached to the concrete slab S and has a protruding ridge 13 having a triangular cross section formed on the lower surface thereof.

In order to assemble the ceiling hanging bracket 1, a spring 5 made of the spring plate is mounted on the bottom wall 2b of the bracket main body 2, and the bolt insertion hole 2c of the bracket main body 2 and the bolt insertion hole of the spring 5 are mounted. 10, the inner ends of the holding pieces 3, 3 arranged symmetrically to each other are fitted into the metal fitting body 2 from both left and right sides thereof, and the support shaft insertion hole 2d of the metal fitting body 2 is formed. The support shaft 4 is inserted through the support shaft insertion hole 8 of each of the holding pieces 3 and fastened with a nut 4a.
Is pivotally attached to the metal fitting body 2 so as to be freely opened and closed. In this state, the holding pieces 3 and 3 are urged by the spring 5 in the opening movement direction in which the upper ends of the inner ends of the holding pieces are separated from each other. Then, the clamping piece locking bolt 6 is inserted between the inner ends of the clamping pieces 3 and 3 through the spring 5 and the bolt insertion holes 10 and 2c of the metal fitting body 2 so that both sides of the hexagonal bolt head 6a are formed. The parallel side portions are formed by the side walls 3 of the two holding pieces 3.
1 and 3a, the inner ends of the bolts 6 are non-rotatably contacted with each other, and the bolt coupling fasteners 7 are screwed into the screw portions 6b of the bolts 6 projecting downward from the fitting body 2, as shown in FIG. Assemble open.

Therefore, when the bolt connecting fastener 7 is tightened from the open state shown in FIG.
The spring 5 is compressed through the inner ends of the bottom walls 3b and 3b of the holding pieces 3 and 3 which are locked to the lower surface of the head 6a. 4, the upper ends are pivoted in a direction in which they approach each other, that is, in a closing direction, and are fastened and fixed in a closed posture as shown in FIG.

[0010] As described above, the left and right holding pieces 3, 3 include:
In the open position as shown in FIG. 1, the entrance opening width is wider than the bottom width of the triangular ridge 13 of the deck plate 12,
In the closed position as shown in FIG. 2, a fitting portion 14 is formed in which the width of the entrance opening is smaller than the width of the base of the triangular ridge 13.

[0011] The ceiling hanging bracket 1 having the above configuration
In order to attach the deck plate 13 to the deck plate 13, the bolted fastener 7 is loosened in advance, the fasteners 7 are held in a state in which the holding pieces 3, 3 are in the open posture as shown in FIG. The fitting portions 14 of the left and right holding pieces 3 and 3 are fitted to the protrusions 14 of the thirteen. In such a fitting state, after the slide plate 1 is appropriately slid along the length direction of the deck plate ridge 13 to adjust the position, the hanging metal fitting 1 is moved to the bottom of the deck plate ridge 13. The hanging bolt connecting fastener 7 is rotated and fastened in a state of being pressed upward. By the fastening operation of the fastening body 7, the inner ends of the bottom walls 3b, 3b of the holding pieces 3, 3
a and the upper end of the fastening body 7 are integrally fastened and fixed together with the metal fitting body 2, whereby both holding pieces 3, 3 are fitted to the deck plate projections 13 as shown in FIG. 2. It is fixed in the closed state. Thereafter, the upper end of the suspension bolt 12 is screwed and coupled to the suspension bolt coupling fastener 7.

At the time of attaching the hanging metal fitting 1, the hanging bolt connecting fastener 7 is not completely tightened, but is loosened to some extent, and the holding pieces 3, 3 can be slid with respect to the deck plate ridge 13. In this state, the ceiling hanging bracket 1 can be temporarily fixed to the deck plate 12, and the mounting position can be easily adjusted and changed in this temporarily fixed state.

FIG. 4 shows a ceiling hanging bracket 21 according to another embodiment.
Which is different from the previous embodiment in the manner of mounting the spring. That is, in this ceiling hanging bracket 21,
A spring 15 composed of a coil spring is used. The spring 15 is disposed horizontally and horizontally along the outer surface of the side wall 2a of the metal fitting body 2, and both ends of the spring 5 are connected to the side walls 3a of the left and right holding pieces 3, 3. , 3a are attached to pins 16, 16, which are fixed to the outer surfaces of the outer ends, so that the holding pieces 3, 3 can be held in an open position. The pin 16 is positioned lower than the support shaft 4 when the two holding pieces 3, 3 are in the open position as shown by the solid line in FIG. It will be at the top.

The deck plate 13 is usually used as a formwork for forming the concrete slab S, is left as it is after the concrete is cast, and is integrally mounted on the lower surface of the concrete slab S. Thus, the ceiling hanging bracket 1 according to the present invention can be attached to the deck plate 13 before or after the concrete is cast. In this embodiment, only the so-called F deck is illustrated as the deck plate.
The present invention is also applicable to so-called high decks and N decks.

[0015]

According to the present invention, both holding pieces are held in the open position by loosening the bolted fasteners when mounting the deck plate on the deck plate of the present invention. Then, the two holding pieces held in this open position are fitted to the ridges of the deck plate from below, and the fastening body for connecting the suspension bolts is rotated to be fastened. Closing from the open position, the inner ends of the two holding pieces are integrally fastened and fixed together with the metal fitting body between the head of the holding piece locking bolt and the upper end of the fastening body. The holding piece is fixed in a closed state in which the ridges of the deck plate are held from both sides.

As described above, according to the present invention, it is only necessary to fit the both holding portions to the protruding portions of the deck plate while keeping the both holding portions in the open posture, and to rotate the fastening member for connecting the suspension bolts. The work of attaching to the device can be performed easily and easily. In addition, the hanging bolt coupling fastener is loosely tightened to some extent so that both holding pieces can be slid temporarily with respect to the ridges of the deck plate, so that the mounting position of the hanging bracket can be easily adjusted and changed. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a ceiling hanging bracket according to an embodiment of the present invention, showing an open posture;

FIG. 2 is a longitudinal sectional front view of a ceiling hanging bracket similar to FIG. 1, showing a closed posture.

FIG. 3 is an exploded perspective view of the ceiling hanging bracket shown in FIGS. 1 and 2;

FIG. 4 is a front view of a ceiling hanging bracket according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling suspension metal fitting 2 Metal fitting main body 3 Holding piece 4 Support shaft 5 Spring (leaf spring) 6 Bolt for locking holding piece 7 Hanging bolt coupling fastening body 11 Hanging bolt 12 Deck plate 13 Deck plate triangular ridge 15 Cross section (Coil spring) 21 Ceiling hanging bracket

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of left and right holding pieces for holding a triangular ridge of a cross section of a deck plate are supported on a metal fitting body by two horizontally and horizontally spaced support shafts so as to be openable and closable, respectively. A spring that urges both holding pieces in the opening direction is provided, and a head of a non-rotatable bolt penetrating through a center portion between the support shafts of the metal fitting body is positioned on an inner end of the both holding pieces, A ceiling hanging metal fitting for a deck plate, wherein the two holding pieces are closed and fixed by tightening a fastening body for connecting a hanging bolt screwed into the bolt protruding below the metal fitting body.