JP2993848B2 - Unit type vibration isolator and floating floor structure using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit type vibration isolator used for elastically supporting a floor slab of a building. Particularly, it is suitably used for floor slabs of prefabricated houses.

[0002]

2. Description of the Related Art The purpose of isolating a floor slab of a building is to create a quiet sound environment by blocking vibrations propagating from outside to a room by blocking solid-borne sound, and conversely, to generate noise from a room. An object of the present invention is to prevent sound or vibration from being transmitted to another room as solid-borne sound and deteriorating the sound environment of another room (an adjacent room or a lower floor room). There is a floating floor method as a means for achieving this purpose. There are two types of floating floors: a dry floating floor and a wet floating floor.By using a material with increased density such as glass wool or rock wool between the floor slab and the concrete slab as an elastic material,
The floor slab is elastically supported. As described above, in the conventional floating floor method, since the floor slab is elastically supported by using an elastic body between the concrete slab and the floor slab, it cannot be used for a wooden house or a steel frame prefabricated house. However, with the recent development of prefabricated construction methods, many prefabricated apartment buildings have appeared. In these houses, a noise problem between the upper and lower floors (solid transmitted sound causes damage as noise) causes a complaint and significantly lowers the blade of the house. Therefore, it has been desired to develop a floating floor structure that is effective for such wooden houses and steel-frame prefabricated houses.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a wooden floor slab or an ALC floor slab used for a prefabricated house or the like. It is intended to provide a vibration damping device and a floating floor structure which are intended to cut off solid-borne sound by elastically supporting the same.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have developed a unit type vibration damping device having a specific structure. That is, the invention of the present application provides a metal core, a washer integrated with the metal core, a plurality of disc springs guided by the metal core, a washer guided by the metal core and fitted to the disc spring, and a metal core. A unit-type vibration isolator made of a cylindrical rubber vibration isolator fitted to an end, and the unit-type vibration isolator is inserted and fixed to a counterbore provided below a joist under a floor slab, and It has a floating floor structure in which the lower part of the device is mounted on a large scale.
There are various construction methods for prefabricated houses, and a general construction method is a method of completing a steel frame and fixing the floor assembled as a floor slab on a large scale. Therefore, it is necessary to unitize the vibration isolator in this case as an integral unit and incorporate it into a floor slab (including joists).

[0005] As means for integrating the vibration isolator, a method is provided in which a groove is provided near the end of the core bar and a lip portion of the vibration isolator is fitted thereto, and the vibration isolator having a hole smaller in diameter than the core bar is forcibly pushed. By using the elasticity of rubber, and with the cylindrical anti-vibration rubber incorporated, the core has a length protruding from the top of the rubber to the top of the rubber, and the upper end of the core is crushed by punching etc. And integrating them. Although there are various types of vibration insulators, a disc spring is employed in the present invention.
The use of a disc spring is advantageous in that it has a large space flexibility and a large degree of design freedom due to a change in the combination method.
However, the coned disc spring needs to be designed so as to be integrated by selecting a restraining method. In the present invention, a core metal integrated with the washer is used as a guide for the coned disc spring. The anti-vibration device of the present invention is preferably applied to a prefabricated house as described above, but is not limited to this, and can be applied to a conventional wooden house.

[0006]

The present invention will be described below in detail with reference to examples. FIG. 1 shows a unit type vibration isolator using a disc spring according to the present invention. The washer and the core have an integral structure. The upper part of the cored bar 2 has a groove for mounting the vibration isolating rubber 1.
In the drawing, the disc springs 4 are three in series, one sheet at a time. However, as shown in FIG. 3, several sets of two parallel ones are connected in series, or as shown in FIG. Can be adapted to sprung load. The washer 3 is fitted on the cored bar 2 on the disc spring 4, and the vibration isolating rubber 1 is placed thereon.
There is a lip at the lower part of the vibration isolation rubber 1, and it fits into the groove on the upper part of the cored bar 2 to constitute one unit as a whole. As a mounting direction, as shown in FIG. 1, a method in which a counterbore is provided on a joist under a floor slab with a vibration isolating rubber as an upper side and fitted and fixed, and as shown in FIG. Then, there is a method of making the vibration-proof rubber contact with the pulling and making it hard to slip.

FIG. 3 shows a simplified structure for mounting the vibration-proof rubber. The vibration-proof rubber, whose inner diameter is slightly smaller than the outer diameter of the cored bar, is integrated by utilizing the elasticity of the rubber by forcibly pushing it. The relationship between the outer diameter of the cored bar and the inner diameter of the vibration isolating rubber is determined in consideration of the length of the portion where the rubber and the cored bar are fitted and the hardness of the rubber. Fig. 1
Like FIG. 2 and FIG. 2, the vibration-proof rubber may be on the upper side or the lower side, and is determined in consideration of the material and the like of the large-scale. FIG. 4 shows an example in which the entirety of the cored bar has a core slightly longer than the assembled height, and the upper part of the cored bar 2 is crushed by punching or the like as shown in FIG. In this case, in addition to the spot facing for fitting the whole joist 7, a spot facing 8 is required so that the head of the cored bar 2 does not hit the joist. When mounting upside down, the counterbore 8 is provided on the large pulling side.

FIG. 5 shows a mounting structure of a floor slab using the unit type vibration damping device of the present invention. A composite floor 9 composed of various flooring materials is reinforced by joists 7. The conventional floor has a structure in which the joist 7 directly rides on the large pulley 11, but the floor of the present invention has a counterbore for attaching the vibration isolator 10 to the joist 7, and the vibration isolator 10 It is fitted and pressed into the joist 7 using the adhesive or the elasticity of the vibration-proof rubber, and fixed. In this way, by placing the floor slab on the pulling bar 11,
The floating floor structure supported elastically is completed. Therefore, by attaching the unit 10 of the vibration isolator to the joist 7 in advance, a floating floor having excellent vibration isolation can be obtained without drastically changing the construction method. FIG. 6 is an example of the measurement of the heavy floor impact sound level (according to JIS A1418). Compared with the conventional fixed floor, the floating floor according to the present invention has an improvement of two ranks (10 dB) in the sound insulation class of the floor impact sound level.

[0009]

As described above, according to the anti-vibration apparatus and the floating floor structure of the present invention, excellent anti-vibration properties can be exhibited without greatly changing the conventional method, and the sound environment can be easily improved. it can.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which a groove of a cored bar and a rubber lip are used as integrated means in a unit-type vibration isolator of the present invention;

FIG. 2 shows the mounting of FIG. 1 upside down,

FIG. 3 shows an embodiment of the unit type vibration damping device of the present invention in which the unit is integrated by tightening using elasticity of rubber as an integrating method,

FIG. 4 is an example of a unit-type vibration isolator of the present invention in which a protruding portion of a core bar is plastically deformed by punching or the like as an integrating method and integrated.

FIG. 5 is an explanatory view showing a state in which a floor slab is roughly placed using the unit type vibration damping device of the present invention,

FIG. 6 is a comparison diagram of a heavy floor impact sound level between a conventional floor and a floating floor according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anti-vibration rubber 2 Core metal 3 Washer 4 Belleville spring 5 Rubber bulging part 6 Fall prevention part 7 Joist 8 Counterbore 9 Composite floor 10 Unit type vibration isolator 11 Large pull

Claims (4)

(57) [Claims] 1. A metal core, a washer integrated with the metal core, a plurality of disc springs guided by the metal core, a washer guided by the metal core and fitted above or below the disc spring, and a core. A unit-type vibration isolator made of a cylindrical vibration-isolating rubber in which a lip is fitted in a groove provided around the top of gold. 2. A metal core, a washer integrated with the metal core, a plurality of disc springs guided by the metal core, a washer guided by the metal core and fitted above or below the disc spring, and A unit-type vibration damping device consisting of a cylindrical vibration damping rubber having a hole with a diameter smaller than that of a core metal, which is integrated using the elasticity of rubber. 3. A metal core, a washer integrated with the metal core, a plurality of disc springs guided by the metal core, a washer guided by the metal core and fitted on the disc spring, and a cylindrical member. A unit-type vibration isolator that is made of vibration-proof rubber and is integrated by plastically deforming the metal core head that has penetrated the vibration-proof rubber by punching or the like to prevent the vibration-proof rubber from falling off. 4. The unit type vibration damping device according to claim 1 is inserted and fixed to a counterbore provided under a joist under a floor slab, and the lower portion of the vibration damping device is pulled up. Floating floor structure to be mounted.