JP2663112B2 - Anti-vibration rubber - Google Patents

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, and more particularly to an anti-vibration rubber suitable for vibration and sound insulation of facilities such as buildings, equipment and air conditioning ducts.

[0002]

2. Description of the Related Art Conventionally, in an air conditioning system for a building such as a music hall that requires silence, the air noise has been reduced,
It is important to reduce solid-state noise that travels through an air conditioning duct. For the purpose of insulating vibration and insulating sound in such a duct, the following vibration-proof rubber is used.

That is, as shown in FIGS. 5 to 7, when the longitudinal direction is the x direction and the short direction is the y direction, the ratio of the length in the x direction to the y direction (x: y) is 5 or more. Then, the same dimension in the x and y directions as that of the plate-shaped metal fitting 2 is set between two plate-shaped metal fittings 2 on which a plurality of bolts 1 are arranged at equal intervals along the longitudinal direction (x-direction) on one surface. As shown in FIG. 8, a real pipe inserted into a penetrating portion of a building is used as a vibration-proof rubber 4 having a rectangular rubber elastic body 3 having a rectangular cross-section and bonded thereto. Attaching to the sleeve 5 and the like, and connecting the end of the duct 6 to the other side via an attaching member 6a. The mounting of the vibration isolating rubber 4 to the duct 6 or the like is performed by bolts 1 provided on the plate-shaped metal fitting 2. The main surface is fixed not at the center in the y direction but at a position slightly deviated downward from the center.

[0004]

However, in such a conventional anti-vibration rubber, the plate-shaped metal fitting 2 is deformed (warped), and as it is, not only is the workability of manufacturing poor, but also the defect of one pitch of the bolt. And so on.

That is, in order to attach the bolt 1 to the plate-like metal fitting 2 which generally has a large length ratio (x: y) in the x and y directions, the tip end surface of the bolt 1 provided with the small projection is attached to the plate-like metal fitting 2.
A so-called pressing (caulking) method is adopted, in which a plurality of bolts 1 are pressed against a long plate-shaped metal fitting 2, as shown in FIG. The end on the side closer to the pressure contact position is elongated, and warpage occurs. Such deformation of the metal plate 2 causes defects such as poor fit of the metal plate 2 into the mold when the rubber elastic body 3 is vulcanized and bonding, and unevenness of the pitch of the bolts 1 in the product. Was awake.

In order to prevent such a problem from occurring, it is necessary to correct the warpage of the plate-shaped metal fitting 2 using a press or the like before bonding the rubber elastic body 3, resulting in an increase in operating cost. was there.

The present invention has been made in order to solve these problems, and does not cause warpage of a plate-like metal fitting, and has good storage and workability in a mold when bonding a rubber elastic body. An object of the present invention is to provide an anti-vibration rubber in which a problem of a pitch of a mounting bracket such as a bolt is eliminated.

[0008]

According to the present invention, there is provided an anti-vibration rubber comprising: a plate-like metal fitting having a length ratio of 5 or more in a longitudinal direction and a transverse direction;
A vibration-isolating rubber comprising a plurality of mounting brackets fixed to one surface of the plate-shaped bracket by pressure contact at appropriate intervals along the longitudinal direction, and a rubber elastic body bonded to the other surface of the plate-shaped bracket. When the longitudinal direction is the x direction and the short direction is the y direction, an extension is provided on one end surface of the rubber elastic body in the y direction, the extending portion extending from an edge surface of the plate-shaped metal fitting. The metal fitting is located at the center of the plate-shaped metal fitting in the y direction.

In the present invention, it is desirable to use, as the plate-shaped metal member, a metal member whose surface is subjected to a corrosion resistance treatment by plating, painting, or the like. Further, a bolt or a nut can be used as the mounting bracket, and it is preferable to use a mounting bracket whose surface is subjected to a corrosion resistance treatment such as plating. Further, as the rubber elastic body, it is desirable to use rubber that is as soft (low hardness) and excellent in weather resistance as possible, as in the case of the conventional vibration isolating rubber for ducts, and particularly preferably chloroprene rubber.

[0010]

In the vibration isolating rubber of the present invention, the length of the plate-shaped metal member in the y direction is shorter than that of the rubber elastic member, and one end surface of the rubber elastic member in the y direction is on the same side as the plate metal member. Is formed so as to extend from the edge surface. Then, a plurality of mounting brackets are fixed to the plate-like bracket by pressure contact along the longitudinal direction so as to be located at the center in the y direction.

Therefore, the plate-like metal fitting to which the mounting fitting is fixed is not warped or deformed in the y direction, and is stored in the mold when the rubber elastic body is bonded by vulcanization bonding or the like. In addition to improving the performance, there is no problem such as uneven pitch of the mounting bracket. Further, since the plate-like metal fitting does not warp, a step for correcting the warp is unnecessary, and a vibration-proof rubber having good vibration-proof and sound-proof characteristics can be stably obtained at low cost. Further, since the mounting bracket is arranged at a position slightly deviated from the center of the vibration isolating rubber, not at the center in the y direction, the mounting to the duct or the like is easy.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are a front view and a sectional view (yz sectional view) showing an embodiment of the vibration-proof rubber of the present invention, respectively.

As shown in the figure, in the vibration isolating rubber of the embodiment, the length ratio between the longitudinal direction and the lateral direction is 5 or more (for example, 40: 1). , A plurality of (for example, 10) bolts 8 are respectively arranged at equal intervals along the longitudinal direction, and two of such anti-vibration metal fittings 9 are arranged in the longitudinal direction and the transverse direction in the x direction and in the transverse direction, respectively. y
The bolts 8 are arranged parallel to each other with the surface on which the bolts 8 are disposed outside, and a rubber elastic body 10 such as chloroprene rubber is sandwiched and vulcanized and bonded therebetween.

Here, the plurality of bolts 8 are fixed to the center of the y-direction (transverse direction) on one surface of the plate-shaped metal fitting 7 by pressing. The rubber elastic body 10 sandwiched between the two anti-vibration metal fittings 9 has a length in the y direction longer than that of the plate-shaped metal fitting 7, and the upper end surface is larger than the upper end edge surface of the plate-shaped metal fitting 7. It is formed so as to extend upward, for example, by 3 mm. In other words, the rubber elastic body 10 includes the holding portion 10 a held between the two plate-shaped metal members 7, and the extension portion 10 formed on the upper surface of the plate-shaped metal member 7 so as to cover the upper edge surface thereof.
b, which is fixed at the center of the plate-shaped metal member 7 in the y direction, the bolt 8 extends not from the center in the y direction but from the center with respect to the entire vibration isolating rubber.
It is located at a position deviated downward by half the dimension of.

In order to manufacture the vibration damping rubber of this embodiment, for example, the surface of the metal plate 7 punched from a steel plate whose surface is plated is plated at the center in the short direction (y direction). The bolts 8 to which the vibration control is applied are respectively fixed by pressure contact, and the inner surfaces of the obtained two vibration control fittings 9 are coated with an adhesive. Is placed in the mold so that the disposition position is deviated downward from the center of the cavity in the y direction, and then the unvulcanized rubber is put into the mold and vulcanized and formed integrally.

In the anti-vibration rubber of the embodiment configured as described above, the plurality of bolts 8 are fixed to the center position of the plate-shaped metal member 7 in the y direction by pressing, so that the fixing positions of the bolts 8 are set. Does not warp such that the end near the side extends. Therefore, in addition to improving the storability of the vibration isolator 9 in the mold when the rubber elastic body 10 is vulcanized and bonded,
The pitch of the bolts 8 becomes uniform, and the vibration isolator 9
There is no need to correct the warpage.

Further, an extended portion 10b of the rubber elastic body 10 is formed so as to cover an upper edge surface of the plate-shaped metal member 7, and a side peripheral surface of the plate-shaped metal member 7 and a side peripheral surface of the rubber elastic member extended portion 10b are formed. Have the same plane, and as described below, the sealing performance with respect to an attached portion such as an air-conditioning duct is improved. That is,
As shown in FIG. 3, when a load is applied in the z direction to the vibration isolating rubber of the embodiment mounted between ducts or the like, the extending portion 10b of the rubber elastic body 10 expands in the z direction and expands outward. Since it comes out and is pressed against the outer peripheral surface of the attached portion 11, a high sealing property is obtained, and the duct and the like can be supported by vibration isolation.

In the above embodiment, the example of the vibration-proof rubber in which the bolts 8 are arranged on the plate-shaped metal member 7 has been described.
The same effect can be obtained even if a nut is used as a fitting for a duct or the like.

Further, as shown in FIG.
A protrusion or ridge 12 extending in the x direction may be provided on the side peripheral surface of the upper extension 10a. With the vibration-proof rubber having such a structure, the sealing performance between the vibration-proof rubber and the mounted portion is further improved.

[0021]

As described above, in the vibration isolating rubber of the present invention, one end surface in the y direction of the rubber elastic body is formed to extend from the edge surface of the plate-like metal fitting, and is used for mounting a duct or the like. A plurality of mounting brackets such as bolts and nuts are fixed to the center of the plate-shaped bracket in the y-direction by pressure contact, so that the plate-shaped bracket does not warp or the like, so that the plate-shaped bracket can be stored in the mold and the mounting bracket can be mounted. Is improved.

In addition, since the plate-like bracket does not warp, a process for correcting the warp is not required, and an easy-to-install vibration-proof rubber having good vibration-proof and sound-proof characteristics can be efficiently manufactured. Can be.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a vibration-proof rubber of the present invention.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a cross-sectional view showing a state in which the vibration damping rubber of the embodiment is attached to a duct or the like.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a front view of a conventional anti-vibration rubber for an air conditioning duct.

FIG. 6 is a cross-sectional view of a conventional anti-vibration rubber.

FIG. 7 is a perspective view of a conventional anti-vibration rubber.

FIG. 8 is a cross-sectional view showing a mounting state of a conventional anti-vibration rubber.

FIG. 9 is a front view showing a state in which the plate-shaped metal fitting is warped in the conventional vibration-isolating rubber.

[Explanation of symbols]

 7 Plate metal member 8 Bolt 9 Anti-vibration metal member 10 Rubber elastic body 11 Attached part 12 Projection or ridge

Claims (2)

(57) [Claims] 1. A plate-like metal member having a length ratio of 5 or more in a longitudinal direction and a lateral direction, and a plurality of metal members fixed to one surface of the plate-like metal member by press contact at appropriate intervals along the longitudinal direction. In a vibration-isolating rubber including a mounting bracket and a rubber elastic body bonded to the other surface of the plate-like bracket, when the longitudinal direction is the x direction, and the short direction is the y direction,
An extension is provided on one end surface of the rubber elastic body in the y-direction to extend from an edge surface of the plate-shaped metal member, and the mounting member is positioned at the center of the plate-shaped metal member in the y-direction. And anti-vibration rubber. 2. The rubber elastic body according to claim 1, wherein x
The rubber cushion according to claim 1, further comprising a projection extending in the direction.