JP2569772Y2 - Ceiling hanging bracket for post-installed anchor method of deck plate - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] Reinforced concrete or steel,
In general, the ceiling of a steel-concrete structure is arranged on a floor plate such as a deck plate, and concrete is cast, and the decorative ceiling is suspended by bolts hanging from the floor plate. In order to attach these suspension bolts to the floor panel, there are a pre-installation method of attaching an anchor to the floor panel before concrete placement and a post-installation method of attaching an anchor to the floor panel after concrete placement. The present invention relates to a new structure of a ceiling hanging bracket for an anchor method.

[0002]

2. Description of the Related Art Conventionally, installation of equipment such as a deck plate floor ceiling and piping is performed by an anchoring method using an insert metal fitting, that is, an anchor (insert) is attached to a deck plate before concrete is cast. Was the principle.

[0003] The pre-installation method involves laying a deck plate, attaching an anchor (insert), arranging floors, placing concrete, curing, and finally interior work. At the time of the interior work, a suspension bolt is attached to the anchor. Attached, installation of decorative ceilings, facility construction, floor finishing, etc. are performed.

[0004]

However, such a conventional pre-adjustment method cannot cope with a specification change instructed by a customer. Inflexible for future changes and modifications. There are problems such as the need for a specialist for each process.

In order to shorten the construction period and reduce the cost of construction work, a method of post-construction, that is, placing concrete on a deck plate, attaching an anchor, and attaching a decorative ceiling has been studied.

FIG. 4 shows an example of a post-installation method in which metal is fastened to the deck plate 3 after concrete is cast and screws 15 are used as anchors. The method of screwing metal as anchors one by one requires time and effort. It is efficient. An object of the present invention is to provide a ceiling hanging bracket as a post-installed anchor method which can be extremely easily and quickly constructed and is safe even in an earthquake or the like.

[0007]

SUMMARY OF THE INVENTION In order to solve the problem, the applicant has previously proposed a method in which a tool can be attached to a concave portion such as an emboss of a deck plate by hand without using a tool. The upright arms on both sides and the steel plate that connects the upright arms horizontally below are turned upside down by 90 ° in the middle, and the upright arms of the main body consisting of the elastic base used in the elastic direction are placed inward at the upper end. There has been proposed a ceiling hanging bracket in which claws are provided to be opposed to each other and are connected to the concave recesses of the deck plate, and hanging bolts are attached to substantially the center of the elastic bottom side (Japanese Utility Model Application No. Hei 3-30383).
issue).

[0008] In order to further improve this, and to ensure that it does not fall off even when subjected to shock loads or torsional movements such as earthquakes, the center part is a contact surface with the tip of a suspension bolt, and both sides are upright on both sides. Fit a fastening plate provided with a slit of an appropriate length that almost reaches the outer end of the arm into the upright arm on both sides from above,
Approximately in the middle of the upright arms on both sides, retaining pins were provided to stop against the upper surface of the fastening plate. The provision of this fastening plate is characterized in that when the suspension fitting is once attached to the deck plate, it is configured to be absolutely safe against earthquakes and torsion.

[0009]

[Function] Loosen the suspension bolts of the suspension bracket of the present invention, lower the tightening plate, lower the elastic bottom side of the suspension bracket of the present invention upward into the recess such as the embossment of the deck plate after casting concrete, and raise the upright arm. Open the claws on both sides of the upper end to the left and right, connect them, and tighten the suspension bolts. The tightening plate is pushed up by tightening the suspension bolt, and the tightening is completed when the tightening plate hits the lower surface of the deck plate. At this time, since the end of the slit of the fastening plate hits the bent portion of the upright arm, the claw does not come off from the embossed recess of the deck plate even if a twist or load is applied.

By performing interior work such as attaching a decorative ceiling to the suspension bolts, a load is applied to the elastic bottom portion, and the tightening reaction force of the warp claws increases downward, so that the claw bites into the deck plate. In this state, even if a torsional vibration or the like is transmitted, the claws do not come off due to the presence of the tightening plate, so that it is safe.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of the present invention. FIG. 1 is a front view of the hanging fitting, and FIG. 2 is a plan view.

[0012] The body is used in the non-elastic direction of the longitudinal direction of the steel plate
Sideways In embodiments with both side upright arms 4, 4 having a shape bent inward meat shape, and 90 ° reverses the upright arm portion in the same direction at both end portions of the steel plate of the vertical connecting horizontally below And the elastic bottom portion 7 used in the elastic direction . The upright arm portion upper end of the body, opposite to the claw 8, 8 engaged joint in the recessed 10 of the deck plate 3 is provided inward. Reference numeral 11 denotes a slit 13 of an appropriate length, which has a central portion serving as a contact surface 12 of the suspension bolt 2 and has left and right sides substantially reaching the outer ends of the upright arms 4 on both sides.
13 is a clamping plate provided with, this is rarely come fitted from above on both sides upright arms 4, 4 of the body. In the middle of both arms
Is retaining pins 14 to stop strikes the upper surface of the clamping plate 11 are projected in the vicinity of the bending point in the embodiment.
The substantially middle elastic bottom portion 7 of the body, the screw hole 9 is provided
There, the tip abutment surface 12 of the clamping plate 11 which hanger rod 2 may abut is Nishi挿.

[0013] The dimensions of the hanging fittings are, of course, changed depending on the type of deck plate on which the hanging fittings are mounted.

The calculation of the yield strength and the materials used of the hanging bracket of the present invention are the same as those described in the specification of Japanese Patent Application No. Hei 3-30383.

FIG. 3 shows the hanging metal fitting 1 of the present invention attached to the deck plate 3 after the concrete has been cast.

That is, the elastic bottom 7 of the hanging fitting 1 is bent upward on the concave embossed portion 10 of the deck plate 3 after the concrete is cast, and the claws 8, 8 are attached while being opened right and left.

The hanging bolts 2 screwed into the screw holes 9 are screwed in, and the claws 8, 8 are cut into the embosses 10 while pushing up the contact surface 12 of the tightening plate 11 with the tips of the hanging bolts 2. Attachment is completed when it hits the lower surface of the deck plate 3.

Even when a load is applied to a decorative ceiling, a duct, a pipe, or the like, the elastic bottom portion 7 is warped downward, and exhibits a large final fracture value with a small variation due to an increase in the tightening reaction force of the claws 8,8.

[0019]

[Effects of the Invention] The hanging bracket of the present invention can be constructed simultaneously with the interior construction work, and is a post-construction work for the anchor (insert) installation worker, which is very simple. Even if the vertical load is greater than the static load, the body of the hanging bracket, which increases the reaction force of tightening the claws 8,8, can be used as an anchor, and no processing is required on the deck plate, and it can be mounted without tools. 3-3
All the effects of the 0383 hanging bracket are retained.

In addition, it is very safe against shock loads such as earthquakes and torsional moments, and accidents such as dropping of the hanging fitting without opening the claws are eliminated, and the effect of not giving the user an uneasy feeling is great. .

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a ceiling hanging bracket of the present invention.

FIG. 2 is a plan view showing an example of the ceiling hanging bracket of the present invention.

FIG. 3 is a partial cross-sectional front view showing a state where the ceiling hanging bracket of the present invention is attached to a deck plate after casting concrete.

FIG. 4 is a cross-sectional view showing an example of a conventional ceiling hanging fitting by a post-installation method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling hanging bracket 2 Hanging bolt 3 Deck plate 4 Upright arm part 5 Bending part 6 Twist part 7 Elastic bottom part 8 Claw 9 Screw hole 10 Depression (emboss) 11 Clamping plate 12 Contact surface 13 Slit 14 Stopping pin 15 Screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A two-sided upright arm using a steel plate in a vertical inelastic direction, and a vertically-oriented steel plate connecting the upright arm horizontally below at both ends by 90 ° in the same direction at both ends. Then, at the upper end of the upright arm of the main body consisting of the elastic base used in the horizontal elastic direction, there is provided a claw that faces inward and is connected to the concave recess of the deck plate, and the center part is the tip of the suspension bolt. A fastening plate with an appropriate length slit on each of the left and right sides that almost reaches the outer ends of the upright arms on both sides is fitted into the upright arms on both sides from above, and approximately in the middle of the upright arms on both sides. A retaining pin for stopping against the upper surface of the tightening plate is protruded, a screw hole is provided substantially at the center of the elastic bottom portion of the main body, and a suspension bolt whose tip can abut on the abutting surface of the tightening plate is inserted. Ceiling suspension fittings for post-installed anchoring method used on deck plates that are to be used.