JPH0571314U - Ceiling suspension bracket for deck plate - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a ceiling hanging metal fitting that can be easily and easily mounted on a deck plate and whose mounting position can be adjusted and changed. [Structure] A pair of left and right clamping pieces 3 and 3 for clamping the triangular protrusion 13 of the deck plate 12 in the metal fitting body 2,
The two support shafts 4 and 4 horizontally spaced apart from each other support the openable and closable shafts, respectively, and a spring 5 for urging the two clamping pieces 3 and 3 in the opening direction is provided. Non-rotatable bolt 6 that penetrates through the center between spindles 4 and 4.
Heads 6a are located on the inner ends of the two clamping pieces 3 and 3, and the clamping bolts 7 for connecting the hanging bolts screwed to the bolts 6 projecting downward from the metal fitting body 2 are tightened to thereby clamp both clamping pieces. Fixed so that 3 and 3 are closed and fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ceiling deck plate attached to a concrete slab, particularly the above-mentioned ridge portion of a deck plate (generally referred to as a high deck, F deck, etc.) integrally formed with a ridge portion having a triangular cross section on the lower surface side. It is related to the ceiling hanging metal fittings for deck plates used for hanging ducts and electric wiring with hanging bolts.

[0002]

[Prior art and its problems]

 Conventionally, there has not been provided an Arai suspension fitting that can be easily and easily attached to the above-mentioned deck plate with a ridge. Therefore, when suspending a suspension bolt on this type of deck plate, an appropriate metal fitting for supporting the suspension bolt was attached and fixed to the ridges of the deck plate by welding, but the welding work is extremely troublesome. In addition to this, there is a problem that once the welding is performed, it becomes difficult to adjust or change the mounting position.

In view of the above problems, it is an object of the present invention to provide a ceiling hanging metal fitting that can be easily and easily mounted on a deck plate and whose mounting position can be adjusted and changed.

[0004]

[Means for Solving the Problems]

 The ceiling hanging metal fitting for deck plate of the present invention, which can achieve the above-mentioned object, comprises a pair of left and right holding pieces for holding the triangular ridge portion of the cross section of the deck plate in the main body of the metal fitting. Heads of non-rotatable bolts that are rotatably supported by the respective support shafts and have springs that urge both clamping pieces in the opening direction, and that penetrate through the center of the bracket body between the support shafts. Is positioned on the inner end portions of the both clamping pieces, and the hanging bolt coupling fastening body screwed to the bolt protruding below the metal fitting body is tightened so that the both clamping pieces are closed and fixed. It is characterized by being configured into.

[0005]

【Example】

 An embodiment will be described with reference to the drawings. Figs. 1 to 3 show a ceiling hanging metal fitting 1 for a deck plate according to the present invention. The ceiling hanging metal fitting 1 is a U-shaped metal fitting having an upward section. A pair of left and right sandwiching pieces 3 and 3 are rotatably and axially supported on the main body 2 by two support shafts 4 and 4 which are horizontally spaced apart from each other, and the pair of sandwiching pieces 3 and 3 are opened. A spring 5 urging in the direction is interposed between both clamping pieces 3 and 3 and the metal fitting body 2, and vertically clamped in the central portion between the both supporting shafts 4 and 4 of the metal fitting body 2. The hexagonal head portion 6a of the one-side locking bolt 6 is fitted in a non-rotatable state between the inner end portions of the both holding pieces 3 and 3, and the screw portion 6b of the bolt 6 protruding below the metal fitting body 2 is engaged. The suspension bolt connecting fastening body 7 is screw-fitted to the.

To explain the above structure in more detail, as is clear from FIG. 3, the metal fitting body 2 is formed in an upwardly U-shaped cross section by the side walls 2a, 2a and the bottom wall 2b connecting them. The bottom wall 2b is provided with a bolt insertion hole 2c at the center thereof, and each side wall 2a is provided with a spindle insertion hole 2d at both ends thereof. Each of the sandwiching pieces 3 is composed of side walls 3a, 3a having a substantially L shape in a side view, and a bottom wall 3b connecting the side walls 3a. The side wall 3a has a shaft insertion hole 8 and the bottom wall 3b has an inner end formed with An arcuate engagement recess 9 that can engage with the peripheral surface of the bolt 6 on the side of the screw portion 6b is formed. Further, the inner ends of both side walls 3a, 3a of each sandwiching piece 3 project beyond the inner end of the bottom wall 3b, so that the contact state with the bolt head 6b is maintained even when the sandwiching pieces 3, 3 are in the open posture. A projecting piece 3c that can be held is formed.

The spring 5 is composed of a leaf spring whose central portion protrudes upward in a curved shape, and a bolt insertion hole 10 through which the bolt 6 is inserted is provided at the center of the protrusion. Further, the bolt connecting fastening body 7 is composed of a long nut, and as shown in FIGS. 1 and 2, the bolt 6 is screwed into the upper side and the ceiling hanging metal fitting 1 is attached to the lower side. After the installation, the upper end of the suspension bolt 11 for suspending the duct, electric wiring, etc. is screwed into and connected. In FIGS. 1 and 2, reference numeral 12 is a deck plate generally called an F deck, which is attached to the concrete slab S and has a projecting ridge portion 13 having a triangular cross section protruding from the lower surface side thereof.

To assemble the ceiling hanging metal fitting 1, the spring 5 made of the spring plate is placed on the bottom wall 2b of the metal fitting body 2, and the bolt insertion hole 2c of the metal fitting body 2 and the bolt insertion hole of the spring 5 are mounted. In the state where 10 and 10 are matched, the inner end portions of both sandwiching pieces 3 and 3 which are symmetrically arranged with respect to each other are fitted into the metal fitting body 2 from both the left and right sides thereof, and the spindle insertion hole 2d of the metal fitting body 2 is inserted. Then, the support shaft 4 is inserted into the support shaft insertion hole 8 of each holding piece 3 and is fixed by the nut 4a, so that the left and right holding pieces 3 and 3 are pivotally attached to the metal fitting body 2 in an openable and closable manner. In this state, the two clamping pieces 3, 3 are urged by the spring 5 in the opening direction in which the upper ends of the inner ends of the two clamping pieces are separated from each other. Then, the clamping piece locking bolt 6 is inserted between the inner end portions of both the clamping pieces 3 and 3 into the bolt insertion holes 10 and 2c of the spring 5 and the metal fitting body 2, and both sides of the hexagonal bolt head 6a are inserted. The parallel side surfaces are non-rotatably abuttingly engaged with the inner ends of the side walls 3a, 3a of the two clamping pieces 3, 3 and the screw portion 6b of the bolt 6 protruding downward of the metal fitting body 2 is used for connecting the bolts. The fastening body 7 is screwed and assembled in an open state as shown in FIG.

Accordingly, when the bolt coupling fastening body 7 is tightened from the open state shown in FIG. 1, the bottom walls 3b of the sandwiching pieces 3, 3 which are locked to the lower surface of the head 6a of the bolt 6 are tightened. , 3b, the spring 5 is compressed via the inner end portions thereof, and the holding pieces 3 and 3 are rotated in the direction in which the upper end portions approach each other around the support shafts 4 and 4, that is, in the closing direction. , And is fastened and fixed in a closed posture as shown in FIG.

As described above, the left and right holding pieces 3, 3 have an inlet opening width wider than the bottom width of the triangular protrusion 13 of the deck plate 12 in the open posture as shown in FIG. In the closed posture as shown in FIG. 7, the fitting portion 14 is formed in which the width of the inlet opening is narrower than the width of the base of the triangular protrusion 13.

In order to mount the ceiling hanging metal fitting 1 having the above-mentioned configuration on the deck plate 13, the bolt connecting fastening body 7 is loosened in advance, and both clamping pieces 3 and 3 are opened as shown in FIG. In this state, the fastening body 7 is held, and the fitting portions 14 of the left and right sandwiching pieces 3 and 3 are fitted to the protruding portions 14 of the deck plate 13. In such a fitted state, the position of the deck plate ridge 13 is adjusted by appropriately sliding it along the lengthwise direction of the deck plate ridge 13, and then the hanging metal fitting 1 is attached to the bottom of the deck plate ridge 13. The fastening body 7 for connecting the hanging bolt is rotated and fastened while being pressed upward. By this fastening operation of the fastening body 7, the inner ends of the bottom walls 3b, 3b of the two clamping pieces 3, 3 are integrated with the metal fitting body 2 between the head 6a of the bolt 6 and the upper end of the fastening body 7. 2, the two clamping pieces 3, 3 are fixed in a closed state in which they are externally fitted to the deck plate protrusion 13 as shown in FIG. After that, the upper end portion of the suspension bolt 12 is screwed and coupled to the suspension bolt coupling fastening body 7.

When mounting the suspension fitting 1, the suspension bolt connecting fastening body 7 is not completely tightened, but is loosened to some extent, and the sandwiching pieces 3 and 3 are slid with respect to the deck plate protrusion 13. By making it possible, the ceiling hanging metal fitting 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 an example of a ceiling suspension fitting 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 metal fitting 21, a spring 15 composed of a coil spring is used, and this spring 15 is horizontally arranged along the outer side surface of the side wall 2a of the metal fitting body 2, and both ends of the spring 5 are arranged. The holding pieces 3 and 3 can be held in the open position by being attached to the pins 16 and 16 fixed to the outer surface of the outer ends of the side walls 3a and 3a of the left and right holding pieces 3 and 3, respectively. The pin 16 is located below the support shaft 4 when the holding pieces 3 and 3 are in the open position as shown by the solid line in FIG. 4, and is in the closed position as shown by the phantom line in FIG. It will be positioned higher.

The deck plate 13 is usually used as a form for forming the concrete slab S, and is left as it is after the concrete is placed, and is integrally mounted on the lower surface of the concrete slab S. Therefore, the ceiling hanging fitting 1 according to the present invention can be attached to the deck plate 13 before and after placing concrete. In this embodiment, only the so-called F deck is exemplified as the deck plate, but other than this, the present invention can also be applied to so-called high decks and N decks.

[0015]

[Operation and effect of the device]

 According to the ceiling hanging metal fitting for a deck plate of the present invention, both clamping pieces are held in an open position by loosening the bolt coupling fastening body when mounting on the deck plate. Then, by fitting the sandwiching pieces held in the open position to the protrusions of the deck plate from the lower side and rotating the fastening body for connecting the hanging bolts to fasten them, both sandwiching pieces are By closing from the open position, the inner ends of the two clamping pieces are integrally fastened together with the metal fitting body between the heads of the bolts for locking the clamping pieces and the upper ends of the fastening bodies. As a result, both sandwiching pieces are fixed in a closed state in which the projecting ridges of the deck plate are held from both sides.

As described above, according to the present invention, it suffices to fit both holding parts to the ridges of the deck plate in the open posture and rotate the hanging bolt coupling fastening body. Can be easily and easily installed. Also, by loosely tightening the fastening body for connecting the suspension bolts to a certain extent so that both clamping pieces can be slid on the ridges of the deck plate and temporarily fixed, it is easy to adjust and change the mounting position of the suspension fittings. It becomes possible.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional front view of a ceiling hanging metal fitting similar to FIG. 1, showing a closed posture.

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

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

[Explanation of symbols]

 1 Ceiling hanging metal fittings 2 Metal fitting body 3 Holding piece 4 Support shaft 5 Spring (leaf spring) 6 Bolts for locking the holding piece 7 Hanging bolt connecting fasteners 11 Hanging bolts 12 Deck plate 13 Deck plate cross section Triangular ridge 15 Spring (Coil spring) 21 Ceiling suspension fitting

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right sandwiching pieces for sandwiching a triangular projecting portion of a deck plate in a cross section on a metal fitting body are pivotally supported by two spindles which are horizontally spaced apart from each other, and A spring for urging both clamping pieces in the opening direction is provided side by side, and the head of a non-rotatable bolt penetrating the central portion between the support shafts of the metal fitting body is located on the inner end portions of both clamping pieces, A ceiling hanging metal fitting for a deck plate, which is configured such that both clamping pieces are closed and fixed by tightening a fastening body for connecting a hanging bolt screwed to the bolt protruding below the metal fitting body.