JPS5819204Y2 - Anti-vibration insert - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to anti-vibration inserts.

Conventionally, for ceiling structures, it has been common practice to bury inserts in concrete slabs and to screw hanging bolts to the inserts.

However, the buildings inside the station, which are subject to constant vibration,
The interior ceilings of buildings under elevated railways would directly transmit the vibrations of the building, emitting vibration noise due to resonance and significantly deteriorating its durability.

Therefore, the present invention has been developed with a focus on this point, and provides a vibration-proofing insert that provides a vibration-proofing effect to the insert that serves as the overall support part of the ceiling structure, prevents noise, and improves durability. Its gist is that it has an inverted truncated cone-shaped upper and lower through hole with at least one axial protrusion on the inner circumferential wall surface, and a first rubber or other material is inserted into the upper and lower through holes. A vibration isolator is fitted, a suspension bolt threaded assembly is fitted and buried in the center of the lower surface of the first vibration isolation body, and a second suspension bolt made of rubber or the like is provided with a through hole in the center on the lower surface of the suspension bolt threaded assembly. The invention resides in a vibration-proof insert characterized by comprising a vibration-proof body.

Next, an example of implementation of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 indicates a vibration-proof insert main body according to the present invention, and this vibration-proof insert main body 1 has a metal embedded body 2.

This buried body 2 has upper and lower through holes 3 in the shape of an inverted truncated cone, and flanges 4 and 4a are provided at the upper and lower opening edges of the upper and lower through holes 3, respectively, extending in directions orthogonal to each other. ,
The flanges 4, 4a are provided with through holes 5, 5, . . . for insertion of fixing devices such as screws and nails.

Further, a pair of protrusions 6, 6 are provided on the inner circumferential wall surface of the upper and lower through holes 3 at corresponding positions in the axial direction.

Furthermore, a first vibration isolator 7 made of an elastic material such as rubber is fitted into the upper and lower through holes 3.

This first vibration isolator 7 is provided with grooves 8, 8 that fit into the protrusions 6, 6 of the upper and lower through holes 3, and this first vibration isolator 7
It is designed to prevent it from rotating too much.

A hole 9 is provided in the center of the lower surface of the first vibration isolator 7, and a pair of vertical grooves 10, 10 are provided in the inner wall surface of the hole 9 at positions facing each other.

A threaded body 11 of a metal hanging bolt is fitted and buried in this hole 9.

Projections 12 and 12 that fit into the vertical grooves 10 and 10 of the hole 9 are provided on the outer surface of the embedded body 11 to prevent rotation, and a screw 13 is provided on the inner peripheral surface. It is engraved, and a collar 14 is provided on the edge of the opening.

Further, a second vibration isolator 15 is provided below the screw assembly 11.

This second vibration isolator 15 has a dish shape, and has a flat recess 16 on its top surface into which the collar 14 of the screw assembly 11 fits, and a hole 17 through which a hanging bolt passes through the center. The outer peripheral wall is provided with grooves 18, 18 that fit into the lower ends of the protrusions 6, 6 of the buried body 2 to prevent rotation.

Further, on the lower surface of this second vibration isolator 15, there is an annular groove 2 that fits into an annular rising wall 19 provided at the lower part of the buried object 2.
0 is provided to prevent it from falling off.

Note that this annular rising wall 19 corresponds to the collar 14 of the screw assembly 11.
The suspension bolt 21 is configured to be narrower than the diameter of the suspension bolt 21 to prevent it from falling even in the event of an accident such as a fire.

The vibration isolating insert according to the present invention is constructed as described above, and it goes without saying that the effect is the same even if the buried body is square, and the vibration isolating body can be formed by being poured into the upper and lower through holes of the buried body. You can also.

The anti-vibration insert according to the present invention is constructed as described above.

The buried body of the insert is equipped with first and second vibration isolators made of elastic materials such as rubber, which absorb vibrations of the building.
No vibration noise is generated, and the durability of the building itself and the ceiling structure can be significantly improved, and distortion due to rotation etc. can be prevented.

As described above, the present invention has many excellent advantages, and implementing the present invention has enormous practical value.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a vibration isolating insert according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing the same in use, and FIG. 3 is a longitudinal sectional view showing the same in use. 1... Anti-vibration insert body, 2... Buried body, 3... Upper and lower through holes, 4, 4a...
・Flange, 5...Insertion hole, 6゜12...
... Projection, 7... First vibration isolator, 8, 18...
... groove, 9 ... hole, 10 ... vertical groove,
11...screwing together, 13...screwing out, 14
...Tsuba, 15...Second vibration isolator, 16.
...Flat concave part, 17 ... Hole, 19 ...
...Annular rising wall, 20...Annular groove, 21
...hanging bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] It has an inverted truncated cone-shaped upper and lower through hole with at least one axial protrusion protruding from the inner peripheral wall surface, and a first vibration damping material such as rubber is installed in the upper and lower through holes. A suspension bolt threaded assembly is fitted and buried in the center of the lower surface of the first vibration isolator, and a second vibration isolation member made of rubber or the like is provided with a through hole in the center of the lower surface of the suspension bolt threaded assembly. Anti-vibration insert characterized by having a body. (2) A claim insert characterized in that each opening edge of the upper and lower through-holes is provided with a flange portion extending in mutually orthogonal directions.