JPS5814755Y2 - Soundproof and vibration-proof floor equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floor placement device with excellent sound insulation and vibration isolation effects for supporting floors of reinforced concrete, housing complexes, etc.

As shown in FIG. 1, this type of flooring device that has been proposed in the past basically has a flange portion that is fitted into a through hole 2 provided at a desired position in a flooring material 1 and is integrally provided on the lower side. It consists of an internally threaded member 4 fixed to the flooring 1 with rivets 3 at The horizontal level of the floor material 1 is adjusted by moving the floor material 1.

This conventional device is difficult to use when a large load is applied to the flooring material because the load from the flooring material is directly applied to the screw pile, and in particular, shocks, vibrations, etc. applied to the flooring material are passed through the screws 6 to the base plate 5. It has the disadvantage that it can directly propagate to the floor and generate noise in the rooms downstairs.

In order to eliminate this drawback, conventional measures have been taken to fit a rubber cup to the lower end of the screw punch 6 to dampen vibrations between it and the base plate 5, but the effect is still insufficient.

The present invention proposes a sound-proof and vibration-proof flooring device that eliminates the above-mentioned drawbacks. , a screw punch whose lower end is supported by the lower support and extends vertically upward; It consists of an upper elastic body having an upper small diameter part that fits into a through hole provided at a desired position and a lower large diameter part provided below the upper elastic body, and the lower support body is connected to the surrounding flange part and the central screw punch. It consists of a screw punch support member having a receiving recess and a lower elastic body that elastically supports the screw punch support member between it and a base, and when the lower end of the screw punch is covered with a synthetic resin type cap, the screw punch support member shown in FIG. This is due to the fact that it is press-fitted into the screw receiving recess, and thus, according to the present invention, shocks and vibrations from the flooring material are absorbed doubly by the upper elastic body and the lower elastic body. Therefore, the amount of noise propagated to the foundation is small, effectively preventing noise from occurring downstairs.In addition, the lower end of the screw is supported by simply fitting it in, making it easy to assemble.
Furthermore, this lower end is supported within a synthetic resin type cap and is rotatable with little friction, so that there are advantages such as easy adjustment of the flooring level.

Next, the present invention will be explained in more detail with reference to FIG. 2 of the accompanying drawings.

In FIG. 2, reference numeral 10 indicates a soundproof and vibration-proof flooring device of the present invention supporting a flooring material 11, and this device includes an upper support member 12.
, a lower support 13 , and a screw punch 14 connecting both supports.

The upper support body 12 consists of a female screw member 15 and an upper elastic body 16 attached to the rod of the test drill thread. It also has an integrally formed flange portion 18, on the other hand,
The upper elastic body 16 made of rubber is transparent (L) formed on the flooring material 11.
It consists of an upper small diameter part 20 which is fitted into the upper small diameter part 20 from below and a lower large diameter part 22 which is integrally and concentrically formed therewith and provides a shoulder part 21 for supporting the flooring material. A hole 23 is formed, and a female screw member 15 is inserted into this through hole.
The main body part 17 is fitted, and at this time the flange part 18 prevents the upper elastic body 16 from falling out.

In this case, it is preferable to insert a washer 24 between the flange portion 18 and the lower surface of the upper elastic body 16, and also make the diameter of the washer 24 slightly larger than the diameter of the through hole 19 so that the upper elastic body It is preferable that the load applied to the lower large diameter portion 22 is reliably received by the washer 24.

In some cases, the flange portion 18 may be extended instead of the washer 24 to provide a similar effect.

Incidentally, a large number of annular lips 25 are formed on the circumferential surface of the upper small diameter portion 20 of the upper elastic body 16, thereby ensuring a secure state of engagement between the through hole 19 and the upper small diameter portion 20, and ensuring that the upper small diameter portion 20 is not fitted. It also becomes easier.

The lower support body 13 has a lower elastic body 27 made of rubber placed on a base 26 and a screw supporting member 28 placed on the lower elastic body. It consists of a flange portion 29 and a central receiving portion 30 projecting downward, which fits into a hole 31 formed in the center of the lower elastic body and has a screw receiving recess 32 on the upper side. is forming.

Furthermore, the flange portion 29 is placed on the upper surface of the lower elastic body 27 so that the load, vibration, and impact force received by the screw supporting member 28 are effectively transmitted to the lower elastic body 27.

The screw punch 14 has male threads 33 formed mutually in the upper half or more thereof, and these male threads are screwed together with the female threads of the female thread member 15.

The lower end of the screw punch 14 is fitted into a screw receiving recess 32 of the screw support member 28 with a synthetic resin cap 34 interposed therebetween.

In this way, the lower end of the screw punch 14 is reliably supported, and it can slide and rotate with low friction between it and the synthetic resin cap 34.

An engagement part 35 for rotating the screwdriver is formed at the upper end of the screw punch 14, and this engagement part may be, for example, a slit into which the tip of a screwdriver is inserted, or a hexagonal part that engages with a hexagonal wrench. It can also be a hole.

As the flooring material 11 mentioned above, a conventional wooden flooring material may be used as is, but if a damping material 36 made of a (visco)elastic material is inserted in a sandwich shape as shown in the figure,
Sound and vibration damping performance can be further improved.

Examples of this (visco)elastic material include butadiene acrylonitrile rubber, polyisobutylene rubber, ethylene-propylene rubber, ethylene-propylene-diene terpolymer rubber as a base material, and vinyl chloride, polybutene, and inorganic fillers as base materials. Examples include, but are not limited to, rubber compositions containing internal damping ability.

Adjustment of the horizontal level of the floor material in the floor placement device of the present invention is preferably performed using such materials for the upper and lower elastic bodies 16.27, which are the base bodies of the upper and lower supports 12.13.
For example, insert a screwdriver through the through hole 19 of the flooring 11 and use the screw rotating engagement part 35 at the upper end of the screw punch 14 to tighten the screw punch 14.
The lower end of the screw punch 14 slides smoothly against the synthetic resin cap 34, and the upper support 12 carrying the flooring 11 is easily rotated from side to side.
is moved up and down depending on the amount of rotation of the screw punch 14 and the pitch of the screw.

In this case, the female screw member 15' can have a long slip fit over the thickness of the lower large diameter portion 22 of the upper elastic body 16 relative to the thickness of the flooring 11, so the amount of horizontal level adjustment of the flooring 11 can be increased. Not only does the range become wider, but the load-bearing capacity also increases.

As described above, according to the structure of the flooring device of the present invention, the flooring material 1
1 is elastically supported between it and the base 26 through the elastic bodies 16 and 27, so that shocks and vibrations applied to the flooring are doubly absorbed by both of the elastic bodies, and the vibrations are transmitted through the base 26. It is possible to prevent noise from occurring in the downstairs room, and in this case, if the flooring material used is a sandwich-like damping material made of (visco)elastic material,
The sound and vibration damping effect can be further improved.

The effects of the present invention will be demonstrated below using experimental examples.

The conventional devices A and B and the device C of the present invention are JIS-A14
The impact sound levels were compared according to the method for measuring floor impact sound levels at the site of 19 buildings.

When using a tapping machine, the head of the hammer should be a steel head, and when using a tire drop, use a tire size 5.
．． 20-10, an air pressure of 2 kg/cm2, and a weight of 7 kg was dropped from 0.9±0.1 m above the floor.

The measurement microphone was set 1.2 m above the floor in the downstairs sound receiving room.

The concrete thickness of the base was 120 mm.

Conventional device A: It has a structure as shown in Fig. 1, but the flooring material has a thickness of 3Q mm for the upper plate (including the soffit) and a thickness of 20 mm for the lower plate.
mm, with a 1 mm thick polyisobutylene rubber sheet sandwiched between them.

The distance between the base and the floor was 140 mm.

Conventional device B: The lower support member 13 shown in Fig. 2 is used at the lower end of the screw punch shown in Fig. 1, and the lower elastic member has a hardness of 80° (J
IS) rubber body was used.

(The flooring and other materials are the same as in the case of conventional device A.

) Apparatus C of the present invention: the structure shown in FIG. 2, in which the upper elastic body 16 was made of a rubber body with a hardness of 70° (JIS), and the lower elastic body 27 was made of a rubber body with a hardness of 80° (JIS).

The flooring and other features are the same as in the conventional device A.

Figure 3 shows the results of measuring the impact sound level using a tapping machine.

As can be seen from these results, conventional device A has extremely high impact noise under the floor, and conventional device B has an elastic body fitted to the lower end of the screw punch.
The impact sound of things is also high pitched.

On the other hand, in the case of device C of the present invention, which uses a damping material for the flooring material and also includes rubber elastic bodies at the upper and lower ends of the screw punch, a significant reduction in the impact sound level is observed.

Figure 4 shows the measurement results of the impact sound level due to a falling tire.

From this result, it is clear that the device C of the present invention is significantly more effective than the conventional devices A and B, as described in the case of FIG.

According to this invention, it is possible to provide strong support for the floor with excellent sound insulation and vibration proofing properties, and it is easy to adjust the horizontal level of the flooring material, and it is also possible to make large adjustments, so the floor surface can be fixed without sacrificing ease of construction. It is possible to almost completely prevent shocks and vibrations from being transmitted to the base.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a conventional bed placing device, Fig. 2 is a longitudinal cross-sectional view of a bed placing device according to the present invention, Fig. 3 is a graph comparing the effects of the conventional device and the proposed device by a tapping machine impact test, FIG. 4 is a graph similar to FIG. 3 in the case of the tire drop impact test. The correspondence relationship between the main parts shown and the symbols is as follows. 11...Floor material, 12...Upper support,
13...lower support, 14...screw pestle,
15...Female screw member, 16...Upper elastic body, 19...Through hole, 20...Upper small diameter section, 22...Lower step Large diameter section, 26...
Base, 27...Lower elastic body, 28...
Screw punch support member, 29...Flange portion, 32...
...Screw punch receiving recess, 34...Synthetic resin cap.

Claims (1)

[Scope of utility model registration request] The above-mentioned upper part has an upper support body for receiving the flooring material, a lower support body placed on the base, and a screw pestle whose lower end is supported by the lower support body and extends vertically upward. The support comprises a female threaded member that is screwed into a screw punch, an upper small diameter portion held by the female threaded member and fitted into a through hole provided at a desired position in the flooring material, and a lower large diameter portion provided below the small diameter portion. an upper elastic body, the lower support member having a peripheral flange portion and a central screw receiving recess, and a lower elastic body that elastically supports the screw punch support member between the base; Become,
A sound-proofing and vibration-proofing floor device characterized in that the lower end of the screw punch is press-fitted into the screw receiving recess with a synthetic resin type cap covered.