JPS6237854Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to vibration prevention measures for ceiling structures in buildings.

The ceiling structure in this type of building is generally
As shown in the figure, when forming the ceiling slab A (which is also the floor slab on the upper floor) by pouring concrete, insert metal fittings B are integrally buried in the ceiling slab A. The hanger hardware E is further connected to the hanging rod C which is screwed to the insert hardware B and hung down.
A beam structure consisting of cross-crossing field edges F and field edges G is attached to the beam structure, and a ceiling board H is attached to this with nails or the like. In addition, air conditioning ducts and electrical wiring ducts are installed on the hanger hardware E as appropriate, and in order to block out the sounds of daily life (mainly vibration noise) on the upper floors, the hanging rods C and connection 〓D are installed. A vibration-proofing structure is provided in which vibration-proofing rubbers I and J are interposed between the connection D and the hanger hardware E, respectively.

However, such a conventional structure naturally increases the number of parts and complicates the structure, which is disadvantageous in terms of cost. In addition, ceiling slab A and ceiling board H
If the gap h is long and you want to make the gap h small for design reasons, that is, if you want to leave room for the ceiling height in the room, you will have to make a lot of effort, especially when connecting as an intermediate connection. D was surprisingly large at 100 m/m considering the gap h, and this was the cause of the increase in the gap h.

In view of the above, the present invention aims to simplify and reduce the cost of the ceiling structure by using an extremely small number of parts, and to reduce the gap h without difficulty. The present invention is based on a ceiling structure that uses an insert metal fitting embedded in the ceiling slab with an open downward position, a nut-like body elastically supported within the insert metal fitting,
The above object is achieved by providing a hanger hardware having an integrally formed upper end with a screw shaft portion which passes through the above opening and is screwed onto the nut-like body.

Hereinafter, details of the present invention will be explained using the structure of each embodiment shown in the drawings.

FIGS. 1 and 2 show a first embodiment, in which the metal insert 1 has a box-like shape with an opening at the bottom, and a positioning flange 2 that is bent outward is provided at the lower edge of the opening. At the same time, a retaining flange 3 is also provided around the opening, which is also bent inward from the mouth edge, and an insertion/removal opening 4 is formed surrounding the distal end of the retaining flange 3. . 5
is a vibration-isolating rubber block that is tightly fitted inside the insert metal fitting 1 when it is manufactured, and a female threaded metal fitting 6 is embedded inside the rubber block 5, and a female threaded metal fitting 6 is inserted from the entrance of the female threaded metal fitting 6. A tapered insertion hole 7 is opened toward the lower end of the rubber block, and a screw hole 8 of the female threaded fitting 6 is exposed to the outside through the insertion hole 7 and the insertion/extraction opening 4. Reference numeral 9 indicates a flange portion for preventing the female screw fitting 6 from coming off, and reference numeral 10 indicates an anchor fixed to the insert metal fitting 1 by welding. On the other hand, hanger hardware 11
is a metal plate having a substantially inverted battledore shape, and the main body portion 11a is bent and formed with an engaging hook portion 12 for holding the field edge receiver F shown in FIG. Nail holes 13, 13 for nailing into the receiver F are provided, and furthermore, this main body part 1
A suspension rod portion 11b extending upward from 1a is a helical shaft portion.

The metal insert 1 is integrally buried in the ceiling slab A when it is cast, with the rubber block 5 fitted therein, and after the die is removed, the insertion/removal opening 4 of the metal insert 1 and the rubber block 5 are inserted into the ceiling slab A.
Insert the hanging rod part 11b of the hanger metal fitting 11 through the insertion hole 7 and connect it by screwing it into the female threaded metal fitting 6.
A ceiling plate H is suspended through a beam structure consisting of a frame receiver F and a frame G shown in the figure, and an air conditioning equipment duct and an electrical wiring duct are connected to a specific hanger hardware 11.

In this way, when vibrations from the upper floor attempt to be transmitted to the hanger hardware 11 through the ceiling slab A and the insert hardware 1, they are absorbed by the rubber block 5 and do not reach the hanger hardware 11, and the screw connection structure between the female threaded hardware 6 held in the rubber block 5 and the hanger hardware 11 allows the ceiling panels, ducts, etc. to be securely suspended.
Also, the gap between the ceiling slab A and the ceiling board H is kept short by only the hanger metal fittings 11 and the beam structures F and G. Since the insertion hole 7 of the rubber block 5 is a tapered hole, the hanging rod portion 1 can be smoothly inserted.
1b can be guided into the screw hole 8 of the female thread fitting 6.

3 and 4 show the structure of a second embodiment of the present invention, in which a vibration-isolating coil spring 14 is used in place of the rubber block 5.
That is, the coil spring 14 has one end 14a welded and fixed to the top wall 1a of the metal insert 1, and its tip connected to the guide hole 1 opened in the top wall 1a.
5 and take it out to the outside, and attach it to the anchor 16.
In addition, the lower end 14b of the coil spring 14 is similarly welded and fixed to the nut 17, and the nut is suspended in the insert metal fitting 1, and the hanger metal fitting 11 is connected to this.

As described above, the present invention includes a nut-like body that is elastically supported in a metal insert, a hanger metal piece is connected to this nut-like body, a ceiling plate is suspended from this via a beam structure, and various ducts are connected to the piping. As a result, the gap between the ceiling slab and the ceiling board is shortened, which has the advantage of increasing the indoor ceiling height and providing flexibility in the design of the building. . Further, the number of parts can be significantly reduced, the structure can be simplified, and the cost can be improved accordingly.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a vertical side view of the insert metal fitting before it is installed, Figure 2 is a vertical side view of the insert metal fitting after installation, and Figure 3 is a vertical side view of the insert metal fitting before it is installed. FIG. 4 is a longitudinal sectional side view of the insert metal fitting showing the second embodiment, FIG. 4 is a cross-sectional view taken along the line shown in FIG. 3, and FIG. 5 is a schematic diagram showing the conventional structure. A...Ceiling slab, 1...Insert hardware,
5,14...Elastic body, 6,17...Nut-like body,
11... Hanger hardware, 11b... Spiral shaft part.

Claims (1)

[Scope of utility model registration request] A hanger that is integrally formed with an insert metal fitting buried in a ceiling slab in a downward opening position, a nut-like body elastically supported inside the metal fitting, and a screw shaft part that passes through the opening and screws onto the nut-like body at the upper end. A ceiling structure in a building comprising hardware.