JPH1181642A - Vibration-proof rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proof rubber capable of obtaining an excellent vibrationproof effect against the impact force from a floor board. SOLUTION: This vibration-proof rubber is provided with a disk-like upper face section 2 directly or indirectly fixed to a floor board and a disk-like lower face section 3 provided in parallel with the upper face section 2 and grounded on a floor foundation bed, and the lower face section 3 has a horizontal projected area larger than that of the upper face section 2. A spherical body 4 partially notched on the upper face section 2 side and the lower face section 3 side in the diameter direction is formed between the upper face section 2 and the lower face section 3, and four ribs 5 capable of bucking formed from the side face end 2a of the upper face section 2 and the side face end 3a of the lower face section 3 are provided at uniform intervals against the spherical body 4 on the side face of the spherical body 4. The vibration-proof rubber has multiple spring actions including a region where the buckling of the spherical body 4 reinforced by the ribs 5 rarely occurs in the initial stage, an impact absorbing region by the buckling of the spherical body 4 in the intermediate stage, and a region where the buckling of the spherical body 4 rarely occurs in the later stage against the impact force from the floor board, and it can have a nonlinear spring characteristic.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration rubber,
In particular, the present invention relates to an anti-vibration rubber for supporting a floor plate of a house, a gymnasium or the like.

[0002]

2. Description of the Related Art Anti-vibration rubbers have been used for supporting vibration-absorbing floor boards of houses and gymnasiums. This vibration-proof rubber can be used easily because it is small and lightweight for its load capacity. However, as shown in FIG. 10, the spring characteristics of such a vibration-isolating rubber have linearity in which the displacement increases linearly with respect to the load, so that it is large even when supporting a floor plate or other members. It was accompanied by displacement. As described above, if the displacement of the floorboard becomes large, the livability deteriorates, and therefore, it was not satisfactory as a support member for the floorboard.

[0003] The present invention has been made to solve such a conventional difficulty, and an object of the present invention is to provide an anti-vibration rubber capable of obtaining an excellent anti-vibration effect against an impact force from a floor plate. I do.

[0004]

According to the present invention, there is provided an anti-vibration rubber according to the present invention, which has a disk-shaped upper surface portion fixed to a floor plate and a disk-like upper surface portion provided in parallel with the upper surface portion. A lower surface portion having a disc-shaped lower surface portion, the lower surface portion having a larger horizontal projection area than the upper surface portion. A sphere with a part cut off in parallel is formed, and a plurality of buckling ribs are formed on the side surface of the sphere from the side edge of the upper surface to the side edge of the lower surface. It is.

[0005] When a load is applied from the upper surface of such a vibration-proof rubber, the load is first received by the rib together with the sphere, so that the amount of flexure is reduced. Therefore, the displacement is small for supporting a large load. When a load is further applied, the buckling displacement of the rib increases, and the ratio of the load applied to the sphere increases, so that the amount of deflection increases. Therefore, the impact force from the floor plate can be absorbed by the buckling displacement of the sphere. After that, since the contact area of the sphere increases, the amount of deflection decreases and the displacement decreases.

Further, the present invention provides an anti-vibration rubber having an upper surface portion fixed to a floor plate and a lower surface portion provided in parallel with the upper surface portion and arranged on a floor base.
The upper surface portion is formed of a cylindrical body, and a hemisphere is formed on the lower surface side of the cylindrical body, and the lower surface portion is formed of a plurality of cylindrical members disposed around the upper surface portion, and the plurality of cylindrical bodies as the lower surface portion Between each side surface of the cylinder and the side surface of the cylindrical body, which is the upper surface portion on which the hemisphere is formed, a columnar body, which is the upper surface portion on which the hemisphere is formed, is floated from the floor base by a predetermined amount, fixed and fixed. A plurality of ribs that can buckle toward the base are provided.

When a load is applied from the upper surface of such a vibration isolating rubber, the load is first received by the ribs together with the hemisphere on the upper surface, so that the amount of deflection is reduced. Therefore, the displacement is small for supporting a large load. When a load is further applied, the buckling displacement of the rib increases, and the ratio of the load applied to the hemisphere increases, so that the bending amount increases. Therefore, the impact force from the floor plate can be absorbed by the buckling displacement of the hemisphere. After that, since the contact area of the hemisphere increases, the amount of deflection decreases and the displacement decreases.

Further, the vibration isolating rubber of the present invention has an upper surface portion fixed to a floor plate, and a lower surface portion provided in parallel with the upper surface portion and disposed on a floor base, wherein the lower surface portion is an upper surface. In the vibration-isolating rubber having a larger horizontal projection area than the circular recess, a circular concave portion is formed on the side where the lower surface portion is disposed, and a spherical body having a dimension shorter than the depth of the circular concave portion and smaller than the inner diameter at the bottom of the circular concave portion. And a groove is provided between the lower surface portion and the upper surface portion so as to buckle the lower surface portion until the spherical body comes into contact with the floor base by a load applied from the upper surface portion.

When a load is applied from the upper surface of such a vibration-proof rubber, the amount of flexure increases until the spherical body comes into contact with the floor base due to the groove provided between the upper surface and the lower surface. However, after the spherical body comes into contact with the floor base, the load is received together with the spherical body by the abutting portion of the lower surface other than the spherical body, so that the amount of bending is reduced. Therefore, the displacement is small for supporting a large load. When a load is further applied, the buckling displacement of the lower surface portion other than the spherical body increases, and the ratio of the load applied to the spherical body increases, so that the amount of bending increases. Therefore, the impact force from the floor plate can be absorbed by the buckling displacement of the spherical body. After that, since the contact area of the spherical body increases, the amount of deflection decreases and the displacement decreases.

As described above, since the non-linear spring characteristic can be provided, an excellent anti-vibration effect against an impact force from the floor plate can be obtained.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an anti-vibration rubber according to the present invention. FIGS. 1 (a), (b), (c), (d), (e)
As shown in the figure, a disk-shaped upper surface portion 2 and a disk-shaped lower surface portion 3 having a larger horizontal projected area than the upper surface portion 2 are provided in parallel, and between the upper surface portion 2 and the lower surface portion 3. A sphere 4 is formed. The spherical body 4 has a shape in which a part of the upper surface 2 and a part of the lower surface 3 are cut in parallel in the diameter direction. On the side surface of the sphere 4, four buckling ribs 5 formed from the side end 2a of the upper surface portion 2 to the side end 3a of the lower surface portion 3 are provided at regular intervals with respect to the sphere 4. Have been. In addition, a fixing hole 6 for press-fitting and fixing a support leg fixed to a floor plate described later is formed in the upper surface portion 2 side.

As shown in FIG. 2, the anti-vibration rubber 1 constructed as described above is attached to the lower part of the support leg 100 and disposed on the floor base 101, and the upper part of the support leg 100 is
It is fixed to. In such a state, the floorboard 10
When an impact force is applied from 2, a load due to the impact force is applied to the upper surface 2 of the vibration-proof rubber 1 via the support leg 100. On this occasion,
As can be seen from the relationship between the load and the amount of deflection shown in FIG. 3, since the load is initially received by the ribs 5 together with the sphere 4, the amount of deflection is reduced. Therefore, the displacement is small for receiving a large load. When a load is further applied, the buckling displacement of the rib 5 increases, and the ratio of the load applied to the sphere 4 increases, so that the amount of bending increases. Therefore, the impact force from the floor plate 102 can be absorbed by the buckling displacement of the sphere 4. After that, since the contact area of the spherical body 4 increases, the amount of deflection decreases and the displacement decreases. That is, in the initial stage in which a load is applied to the impact force from the floor plate 102, the vibration isolating rubber 1 according to the embodiment of the present invention is in a region where buckling by the sphere 4 reinforced by the rib 5 is unlikely to occur, In the stage, there are three patterns of spring action, that is, a shock absorbing region due to the buckling of the sphere 4 and a region in which the buckling by the sphere 4 is unlikely to occur in the later stage, so that a non-linear spring characteristic can be provided. Thereby, an excellent vibration-proof effect against the impact force from the floor plate can be obtained.

Further, the vibration-proof rubber of the present invention is not limited to this,
4 (a), (b), (c), (d), and (e), an upper surface portion 11 composed of a cylindrical body 12 and having a hemispherical body 13 formed below the cylindrical body 12. , Four cylindrical bodies 14 arranged at equal intervals around the cylindrical body 12 on the upper surface 11
A, 14B, 14C, and 14D, and four cylindrical bodies 14A, 14B, 1
4C and 14D, and a rib 1 between each side surface and an upper surface portion 11 which is a cylindrical body 12 having a hemisphere 13 formed at a lower portion.
5 may be provided. Each of these ribs 15
The upper surface portion 11, which is a cylindrical body 12 having a hemispherical body 13 formed at a lower portion, is floated and fixed by a predetermined amount from a floor base described later, and has a shape capable of buckling toward the floor base.
In addition, a fixing hole 16 for press-fitting and fixing a support leg fixed to a floor plate described later is formed in the upper surface portion 11 side.

The anti-vibration rubber 10 configured as described above is used in the same manner as the anti-vibration rubber 1 described above. That is, as shown in FIG. 5, it is attached to the lower part of the support leg 100 and disposed on the floor base 101, and the upper part of the support leg 100 is
It is fixed to. In such a state, the floorboard 10
When an impact force is applied from 2, a load due to the impact force is applied to the upper surface 11 of the vibration-proof rubber 10 via the support leg 100. At this time, as can be seen from the relationship between the load and the amount of deflection shown in FIG. 6, initially, the load is received by the rib 15 together with the hemisphere 13 on the upper surface portion 11, so that the amount of deflection is reduced. Therefore,
The displacement is small for receiving a large load. And
When a load is further applied, the buckling displacement of the rib 15 increases, and the ratio of the load applied to the hemisphere 13 increases, so that the bending amount increases. Therefore, the impact force from the floor plate 102 can be absorbed by the buckling displacement of the hemisphere 13.
After that, since the contact area of the hemisphere 13 increases, the amount of deflection decreases and the displacement decreases. That is, the anti-vibration rubber 1 according to another embodiment of the present invention.
0 is the rib 1 at the initial stage when a load is applied to the impact force from the floor plate 102, as in the case of the vibration isolating rubber 1 described above.
The three types of springs include a region hardly causing buckling due to the hemisphere 13 reinforced by 5, a shock absorbing region due to buckling of the hemisphere 13 in the middle stage, and a region hardly causing buckling due to the hemisphere 13 in the late stage. Since this is an action, a non-linear spring characteristic can be provided. Thereby, an excellent vibration-proof effect against the impact force from the floor plate can be obtained. By changing the thickness of the rib 15, the spring constant in the initial stage where a load is applied can be adjusted.

The anti-vibration rubber of the present invention is not limited to this. As shown in FIGS. 7 (a), 7 (b), 7 (c), 7 (d) and 7 (e), A lower surface portion 22 having a larger horizontal projection area than that of the portion 21 is provided in parallel, and a circular concave portion 23 is provided on an arrangement side of the lower surface portion 22 on a floor base described later.
Is formed, and the circular recess 2 is formed at the bottom of the circular recess 23.
A spherical body 24 having a dimension shorter than the depth of 3 and smaller than the inner diameter may be protruded. The upper surface 2 is located between the upper surface 21 and the lower surface 22 of the vibration-proof rubber 20.
There is provided a groove 25 for buckling the lower surface portion 22 until the spherical body 24 comes into contact with the floor base by a load applied from 1. In addition, a fixing hole 26 for press-fitting and fixing a support leg fixed to a floor plate, which will be described later, is formed in the upper surface 21.

The anti-vibration rubber 20 configured as described above is used in the same manner as the two anti-vibration rubbers 1 and 10 described above.
That is, as shown in FIG. 8, it is attached to the lower part of the support leg 100 and is arranged on the floor base 101, and the upper part of the support leg 100 is fixed to the floor plate 102. In such a state, when an impact force is applied from the floor plate 102, a load due to the impact force is applied to the upper surface portion 21 of the vibration isolation rubber 20 via the support legs 100. At this time, as can be seen from the relationship between the load and the amount of deflection shown in FIG. 9, the spherical body initially protruded into the circular concave portion 23 by the groove 25 provided between the upper surface portion 21 and the lower surface portion 22. The lower surface portion 22 until 24 contacts the floor base 101.
Becomes large. However, the spherical body 24 is
After the contact with the spherical body 24, the load is applied together with the spherical body 24.
Since the contact portions of the lower surface portion 22 other than the above will be received,
The amount of deflection is reduced. Therefore, the displacement is small for supporting a large load. When a load is further applied, the buckling displacement of the lower surface portion 22 other than the spherical body 24 increases, and the ratio of the load applied to the spherical body 24 increases, so that the amount of bending increases. Therefore, the impact force from the floor plate 102 can be absorbed by the buckling displacement of the spherical body 24. After that, since the contact area of the spherical body 24 increases, the amount of deflection decreases and the displacement decreases. In other words, the vibration isolating rubber 20 according to another embodiment of the present invention has an initial stage in which a load is applied to an impact force from the floor plate 101 in a region buckled by the groove 25 in the front stage, and a spherical body. 24 is spherical body 2 after contact
4 is a region that is reinforced by the abutting portion of the lower surface portion 22 and is less likely to buckle, a shock absorbing region due to buckling by the spherical body 24 in the middle stage, and a spherical body 2 in the later stage.
Since there are four patterns of spring action in a region where buckling by 4 is unlikely to occur, it is possible to provide a non-linear spring characteristic. Thereby, an excellent vibration-proof effect against the impact force from the floor plate can be obtained.

When the upper surface of the vibration isolating rubber is fixed to the floorboard, a desired effect can be obtained even if the rubber is directly fixed without the support legs.

[0018]

As described above, according to the anti-vibration rubber of the present invention, the buckling hardly occurs in the initial stage, the shock absorbing region due to buckling in the middle stage, and the buckling hardly occurs in the late stage. Since a non-linear spring characteristic comprising a plurality of patterns of spring actions of regions can be provided, an excellent vibration damping effect against an impact force from the floor plate can be obtained.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of an anti-vibration rubber of the present invention,
(A) is a top view, (b) is a front view, (c) is a right side view,
(D) is a bottom view, and (e) is an AA cross-sectional view of (a).

FIG. 2 is an explanatory view showing a construction state of the vibration isolating rubber of FIG. 1.

3 is a graph showing the relationship between the load and the amount of deflection of the anti-vibration rubber of FIG. 1.

4A and 4B are diagrams showing another embodiment of the vibration isolating rubber of the present invention, wherein FIG. 4A is a top view, FIG. 4B is a front view, FIG. 4C is a right side view, and FIG. (E) is an AA sectional view of (a).

FIG. 5 is an explanatory view showing a construction state of the vibration isolating rubber of FIG. 4.

6 is a graph showing the relationship between the load and the amount of deflection of the vibration isolating rubber of FIG. 4.

7A and 7B are diagrams showing another embodiment of the vibration damping rubber of the present invention, wherein FIG. 7A is a top view, FIG. 7B is a front view, FIG. 7C is a right side view, and FIG. (E) is an AA sectional view of (a).

FIG. 8 is an explanatory diagram showing a state of application of the vibration isolating rubber of FIG. 7;

9 is a graph showing the relationship between the load and the amount of deflection of the vibration isolating rubber of FIG. 7.

FIG. 10 is a graph showing the relationship between the load and the amount of deflection of a conventional anti-vibration rubber.

[Explanation of symbols]

 1... Anti-vibration rubber 2... Upper surface 2a... Upper surface side end 3... Lower surface 3a... Lower surface side end 4. ·································································· Bottom-side part 14A, 14B, 14C, 14D ··········· Cylindrical body ... Rib 20... Anti-vibration rubber 21... Upper surface 22... Lower surface 23... Circular recess 24. ····groove

Claims (3)

[Claims] A disc-shaped upper surface portion fixed to a floor plate,
A disk-shaped lower surface portion provided in parallel with the upper surface portion and disposed on a floor base, wherein the lower surface portion has a horizontal projection area larger than the upper surface portion. A sphere is formed between the lower part and the lower part, and a part of the upper part and the lower part is cut out in parallel in the diametrical direction, and a side surface of the sphere is formed from a side end of the upper part to the lower part. An anti-vibration rubber comprising a plurality of buckling ribs formed toward a side end of the portion. 2. An anti-vibration rubber having an upper surface portion fixed to a floor plate and a lower surface portion provided in parallel with the upper surface portion and disposed on a floor base, wherein the upper surface portion is formed of a cylindrical body. A hemisphere is formed on the lower surface side of the cylindrical body, and the lower surface includes a plurality of cylindrical bodies disposed around the upper surface, and each of the plurality of cylindrical bodies as the lower surface is formed. Between the side surface and the side surface of the columnar body which is the upper surface portion where the hemisphere is formed, the cylindrical body which is the upper surface portion where the hemisphere is formed is lifted from the floor base by a predetermined amount. A plurality of ribs that are fixed to the floor base and that can buckle toward the floor base. 3. An upper surface portion fixed to a floor plate, and a lower surface portion provided in parallel with the upper surface portion and disposed on a floor base, wherein the lower surface portion is more horizontally projected than the upper surface portion. In an anti-vibration rubber having a large area, a circular concave portion is formed on the side where the lower surface portion is disposed, and a spherical body having a dimension shorter than the depth of the circular concave portion and smaller than the inner diameter protrudes from the bottom of the circular concave portion. A groove is provided between the upper surface and the lower surface to buckle the lower surface until the spherical body comes into contact with the floor base by a load applied from the upper surface. Anti-vibration rubber.