JPH0717704Y2 - Anti-vibration support - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vibration-proof support, and more particularly to a support provided with a vibration-proof rubber pedestal used for a floor support structure in a multi-story building or the like.

[Conventional technology]

In recent residential construction, the number of multi-story apartments is increasing, and the floors of each floor of the building have become a wooden finish structure supported at a certain height above the foundation floor surface such as concrete slabs. , The floor impact sound is easily transmitted downstairs, causing troubles and complaints.

As a means for cushioning such impact noise, rubber, other cushioning materials, and vibration damping materials have been used so far in a part of the support (base or floor base) that supports the floor.

The conventional floor support structure with floor noise suppression measures is
As shown in the figure, rod-shaped support fittings (or support bolts) 4
By rotatably burying the lower end of the rod into the hole of the vibration-proof rubber pedestal 1, inserting the tip of a rotary tool such as a screwdriver into the minus groove 5 formed in the upper end surface of the rod-shaped support metal fitting, and rotating the rod-shaped support metal fitting 4. An anti-vibration support body is used which is configured to adjust the height of the floor member receiving member 8 mounted via a nut screwed to the upper end of the rod-shaped support fitting 4. The anti-vibration rubber pedestal 1 has a rubber body (1) made of a single material and a through hole 12 as shown in FIG. The hole 13 is provided. Generally, NR or SB is used as the material of the vibration-proof rubber pedestal 1.
R is used. These materials have high impact resilience,
The degree of cushioning against impact changes depending on the softness.

[Problems to be solved by the device]

It is generally said that the material having the lower hardness, that is, the softer the material, the better the performance, and actually, the data of the better performance of the softer material have been published. However, if it is too soft, the strength of the floor supported by it will decrease, the entire floor will become a flexible structure and the walking feeling will be unnatural, especially if a heavy object is placed, the floor will sink. There is. Although such a soft cushioning material can be expected to have good performance with respect to lightweight impact sound (impact sound of a light and hard object), it does not necessarily have good performance with respect to heavy impact sound (impact sound of a heavy and soft object). In some cases, the function as a support may be impaired.

In the conventional floor support structure using the vibration isolation pedestal made of a single material rubber body as described above, the hardness of the rubber body is lowered,
By lowering the mechanical strength by lowering the strength of the floor and making it a soft structure, the effect of cushioning the floor impact sound is being improved. For this reason, the strength of the floor is inevitably lowered, and it is unavoidable that the entire floor sways or sinks, and such a floor support structure has a practical problem.

Therefore, the hardness of anti-vibration (cushioning / cushioning) rubber could only be lowered to a certain extent, and there was nothing that could be said to be sufficient for cushioning floor impact noise.

In addition, due to the impact resilience of the rubber material, the rubber body jumps up when a large impact is applied, and accordingly, the entire floor installed on it jumps up, and the rubber material and the concrete slab of the foundation floor. When the sound of collision with is transmitted downstairs, a secondary impact sound is generated.

The present invention has been made in order to eliminate the above-mentioned problems, and its purpose is to effectively cushion both heavy impact sound and light impact sound and to have excellent structural strength. It is to provide an anti-vibration support.

[Means for Solving the Problems]

In order to achieve the above object, according to the present invention, a rod-shaped support metal fitting having a height-adjustable floor support member mounted on an upper end portion and a non-through hole into which a lower end portion of the rod-shaped support metal fitting is inserted are provided. An anti-vibration rubber pedestal, the anti-vibration rubber pedestal having a substantially spherical concave portion made of hard rubber having a small impact resilience, and a substantially spherical outer shape fitted in the concave portion of the outer peripheral rubber member. And an inner peripheral rubber member having a large impact resilience and having a hole having an inner diameter large enough for the lower end of the rod-shaped support fitting to be fitted and inserted thereinto, and the rod-shaped support fitting has a predetermined distance from its lower end. A flange portion protruding laterally is provided at a position separated upward, and the flange portion has a vibration-proof rubber via the flange portion when the lower end portion of the rod-shaped support metal fitting is inserted into the hole of the inner peripheral rubber member. Large enough to be placed on the inner rubber member of the pedestal Antivibration support is provided, characterized in that it is formed by.

[Action]

In the anti-vibration support according to the present invention, the anti-vibration rubber base is
An outer peripheral rubber member made of hard rubber having a small spherical repulsion elasticity having a substantially spherical concave portion, and a substantially spherical outer shape to be fitted in the concave portion of the outer peripheral rubber member, and the lower end portion of the rod-shaped support metal fitting is inserted. And a generally soft inner rubber member having a large impact resilience and having a hole with an inner diameter of a large size, and the rod-shaped support fitting is a flange protruding laterally at a position spaced apart from the lower end by a predetermined distance. The flange portion is mounted on the inner peripheral rubber member of the vibration-proof rubber pedestal through the flange portion when the lower end portion of the rod-shaped support fitting is fitted into the hole of the inner peripheral rubber member. Since it is formed in such a size, the impact applied through the rod-shaped support fitting is first transmitted to the inner peripheral rubber member having a large impact resilience of the anti-vibration rubber pedestal, and then the outer peripheral rubber member having a small impact resilience. As you can see, Since the boundary surface between the member and the outer peripheral rubber member is formed in a substantially spherical shape, the impact is diffused radially, the light impact sound is efficiently absorbed by the inner peripheral rubber member, and the heavy impact sound is efficiently absorbed by the outer peripheral rubber member. In addition to achieving high vibration damping and cushioning effects, it also has the action and effect of being able to maintain floor cushioning properties and sufficient mechanical strength.

〔Example〕

The present invention will be described below with reference to the drawings illustrating embodiments.

FIG. 2 is a vertical cross-sectional view of an embodiment of the anti-vibration rubber pedestal 1 of the anti-vibration support body showing the basic configuration of the present invention.

In the figure, reference numeral 2 denotes an outer peripheral rubber member, which is made of hard rubber having a small impact resilience. On the other hand, reference numeral 3 denotes an inner peripheral rubber member embedded in an outer peripheral rubber member, which is generally made of soft rubber having a large impact resilience, but it is important that the material has a large impact resilience regardless of its hardness. .

The outer peripheral rubber member 2 has a concave portion 14 having a substantially spherical shape, preferably a true spherical shape, while the inner peripheral rubber member 3 has a substantially spherical outer shape fitted into the concave portion 14 of the outer peripheral rubber member 2, In addition, a hole 15 having an inner diameter of a size into which the lower end of a rod-shaped support fitting (or a support bolt) having a threaded portion formed at least on the upper side thereof is inserted.
Have. Therefore, when the lower end of the rod-shaped support fitting is inserted into this hole 15, the lower end thereof faces the bottom surface of the recess 14 of the outer peripheral rubber member 2. Further, in such a vibration-proof rubber pedestal, the inner peripheral rubber member is in a state of being wrapped in the outer peripheral rubber member, and will not fall off due to an external force.

FIG. 3 is a sectional view showing an entire floor support structure using a vibration-proof rubber pedestal of another embodiment according to the present invention.

In the figure, reference numeral 10 is a foundation floor such as a concrete slab, and the upper part thereof is the upper floor and the lower part thereof is the downstairs.

An anti-vibration rubber pedestal (rubber for anti-vibration / cushion / cushion) 1 placed on a foundation floor 10 such as a concrete slab has an outer periphery made of hard rubber having a substantially spherical recess 14 and having little or no fitting elasticity. It comprises a rubber member 2 and an inner peripheral rubber member 3 made of a generally soft rubber having a repulsive elasticity or a large property opposite to that of the outer peripheral rubber member 2. The inner peripheral rubber member 3 is a recess 14 of the outer peripheral rubber member 2. It is formed into a substantially spherical shape corresponding to and is fitted in the recess 14 of the outer peripheral rubber member 2.
The rod-shaped support fitting 4 has a flange portion 6 projecting laterally at a position spaced apart from the lower end by a predetermined distance, and the flange portion 6 connects the lower end portion of the rod-shaped support fitting 4 to the inside of the anti-vibration rubber pedestal 1. Formed in such a size that when it is inserted into the cylindrical hole 16 formed in the peripheral rubber member 3, it is placed on the inner peripheral rubber member 3 of the vibration-proof rubber pedestal 1 via the flange portion 6. Has been done. Therefore, the load applied to the rod-shaped support fitting 4 is applied to the upper surface of the inner peripheral rubber member 3 via the lower surface of the flange 6. The bottom surface of the rod-shaped support fitting 4 and the hole 16 of the inner peripheral rubber member 3
And an air chamber 9 having a certain volume are interposed between the and. A screw (outer screw) is cut on the upper side surface of the rod-shaped support fitting 4 as in the conventional example shown in FIG. 4, and a support portion 7a of a nut 7 having a screw (inner screw) screwed to the upper end portion thereof.
The floor material receiving member 8 is supported via the. The floor material receiving member 8 supports the floor material 11 on its upper surface.

In the floor supporting structure having the anti-vibration rubber pedestal 1 of the present invention as described above, the impact from the upper floor (11) is transmitted to the soft inner rubber member 3 having repulsion elasticity through the rod-shaped support fitting 4. At this time, the rubber has a sufficient cushioning effect to prevent the impact from being transmitted to the hard outer rubber member 2 having no impact resilience. Furthermore, when a shock or load is applied that cannot be sufficiently absorbed and buffered by the soft inner rubber member 3 having repulsion elasticity, it is radially transmitted to the hard outer rubber member 2 having no repulsion elasticity, This peripheral rubber member 2
Holds the soft inner rubber member 3 having a firm impact resilience and hardness.

Since the compressive deformation due to the load of the soft inner peripheral rubber member 3 having the repulsive elasticity occurs radially, it is effectively held and suppressed from the outside by the hard outer peripheral rubber member 2 having the non-repulsive hardness, and the floor shakes. And effectively prevent subsidence.

In addition, the outer peripheral rubber member 2 having a hardness without the impact resilience
Has a large internal loss against vibration due to its nature, has shock absorption, and can be used as a foundation floor for concrete slabs, etc.
It also has the effect of absorbing the shock of going to.

Further, since the vibration-proof (cushioning / cushion) rubber pedestal 1 itself has a hard rubber (2) having no impact resilience on the outer periphery thereof, the rubber pedestal will not jump or move due to an external impact. The structure is such that the impact sound generated by colliding with the foundation floor 4 such as concrete slab is not generated.

Further, the air chamber 9 is formed between the bottom surface of the rod-shaped support fitting 4 and the inner peripheral rubber member 3 having repulsion elasticity or the outer peripheral rubber member 2 having no repulsion elasticity.
Does not collide with the inner rubber member 3 having impact resilience or the outer rubber member 2 having no impact resilience due to the compression (shrinkage) of the inner rubber member 3 due to the impact, and the impact sound caused thereby also occurs. The effect that it does not occur is obtained.

[Effect of device]

With the above-mentioned structure, the vibration-proof support of the present invention has a vibration-proof (cushion / cushion) rubber pedestal as a floor impact noise countermeasure. It has the effect of effectively absorbing any sound and not transmitting it downstairs, and having both floor cushioning properties and mechanical strength.

[Brief description of drawings]

1 (a) and 1 (b) are cross-sectional views showing respective conventional examples of a vibration-proof rubber pedestal. FIG. 2 is a sectional view showing an embodiment of the present invention of the vibration-proof rubber pedestal. FIG. 3 is a sectional view showing an embodiment of a floor support structure using a vibration-proof support according to the present invention. FIG. 4 is a perspective view of an anti-vibration support body using an anti-vibration rubber pedestal. 1 ... Anti-vibration rubber, 2 ... Outer peripheral rubber member, 3 ... Inner peripheral rubber member,
4 ... Rod-shaped support metal fittings, 8 ... Floor material receiving member, 9 ... Air chamber, 10
… Foundation floors such as concrete slabs, 11… Floor materials.

Claims (1)

[Scope of utility model registration request] 1. A bar-shaped support fitting on which a floor support member is mounted at its upper end so that its height can be adjusted freely, and a vibration-proof rubber pedestal having a non-through hole into which the lower end of the bar-shaped support fitting is inserted. The anti-vibration rubber pedestal has an outer peripheral rubber member having a substantially spherical recess and made of hard rubber having a small impact resilience, and a substantially spherical outer shape fitted in the recess of the outer peripheral rubber member, and the rod-shaped support metal fitting. Of the inner peripheral rubber member having a large impact resilience and having an inner diameter hole into which the lower end portion of the rod-shaped support fitting is inserted, and the rod-shaped support fitting is laterally positioned at a position spaced apart from the lower end by a predetermined distance. It has a projecting flange portion, and the flange portion is mounted on the inner peripheral rubber member of the anti-vibration rubber pedestal through the flange portion when the lower end portion of the rod-shaped support fitting is fitted into the hole of the inner peripheral rubber member. Characterized by being formed in a size that can be placed Anti-vibration support that.