JP2594882Y2 - 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 a vibration-proof rubber in which a rubber elastic body acts on shear.

[0002]

2. Description of the Related Art Conventionally, as this kind of vibration-proof rubber, for example, there is a rubber-like rubber elastic body 1 as shown in FIG. That is, in FIG. 2 , the outer edge of the disc-shaped rubber elastic body 1 arranged so that the axis is oriented in the vertical direction is supported by the trapezoidal casing 2, and fitted to the inner periphery of the shaft hole of the rubber elastic body 1. Stopper plates 4 and 5 are provided above and below via a cylindrical body 3 formed. The stopper plates 4 and 5 are used to suppress the vertical fluctuation of the rubber elastic body 1 by a certain amount or more. The device 6 is placed on the upper stopper plate 4 during use. Usually, a shear stress acts on the rubber elastic body 1.

[0003]

The above-mentioned conventional vibration-isolating rubber is mounted on the cylindrical body 3 by mounting bolts 7 at the time of mounting.
Since it is tightened and fixed while holding down the stopper plates 4 and 5 arranged at the lower ends, the attachment to the device 6 is complicated,
Further, there is a problem that the structure is complicated due to the large number of parts. Also, an extreme load is applied to the mounting bolt 7 during use.
The lower end of the mounting bolt 7 collides with the base
There is also a drawback in that a shock is applied to a device or the like to be subjected to vibration isolation.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional difficulty , and is easy to handle, easy to install , and easy to use.
Even if an extreme load is applied when using
It is an object of the present invention to provide an anti-vibration rubber that cannot be obtained.

[0005]

According to the present invention, there is provided an anti-vibration rubber having a bottomed casing, a cylindrical support fitting erected in the center of the casing, and an outer edge supported by the casing, An anti-vibration rubber comprising: a substantially disk-shaped rubber elastic body that holds the support fitting at a central portion and is separated from the bottom surface of the casing;
A mortar-shaped concave portion is formed in the center of the inner surface of the
A hemispherical cover is provided at the lower end of the bracket, and the cover
Cover with a rubber cushion that is almost the same shape as the cover.
It is characterized by being formed integrally with the rubber elastic body .

[0006]

In use, an appropriate mounting bolt is screwed into the screw hole of the support bracket, and the device is attached to a device or the like with the mounting bolt. Shear stress acts on the rubber elastic body.

If an extreme load is applied to the support during use, the lower end surface of the support abuts against the rubber cushion, so that the impact is alleviated and a fluctuation of more than a certain value is prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

In FIG. 1, an anti-vibration rubber according to the present invention is a cylinder having a bottomed metal casing 10 and a threaded hole 11 which is erected at the center of the casing 10 in a floating state and penetrates in the axial direction. Support bracket 12 and casing 10
A substantially disk-shaped rubber elastic body 13 supported on the inner surface is provided. The rubber elastic body 13 is a support fitting 1 held at the center.
2 is supported coaxially away from the casing 10.

A circumferential groove 14 for fitting a substantially disc-shaped rubber elastic body 13 is provided on the inner peripheral surface of the casing 10.
A mortar-shaped space 15 is provided on the inner surface of the bottom.
An air vent 16 is provided at the bottom of the casing 10 and communicates from inside the space 15 to the outside. The casing 10
A double-sided adhesive tape 17 for attachment is attached to the bottom surface.
The cylindrical support member 12 has a hexagonal cross section, and has a structure in which a hexagon nut is elongated in the axial direction.

A hemispherical cover 18 for closing the lower end of the screw hole 11 is provided on the lower end surface of the support fitting 12. A rubber elastic body 19 is provided outside the hemispherical cover 18 integrally with the rubber elastic body 13.

The rubber elastic body 19 is a rubber cushion portion, and is formed in a hemispherical shape corresponding to the cover 18 by using the same or different material as the rubber elastic body 13.
It faces the mortar-shaped space 15.

The rubber elastic body 13 is vulcanized and bonded to the support fitting 12, but may be bonded or non-bonded to the inner peripheral surface of the casing 10.

When the anti-vibration rubber having the above configuration is used, an appropriate-sized mounting bolt (not shown) is screwed into the screw hole 11 of the supporting bracket, and the rubber is attached to a device or the like (not shown) with the mounting bolt. Can be The vertical load applied to the support fitting 12 acts as a shear stress on the rubber elastic body 13. If an extreme load is applied to the support fitting 12 during use, the lower end surface of the support fitting 12 comes into contact with the rubber elastic body 19, that is, the rubber cushion portion, so that the impact is reduced and a fluctuation of a certain degree or more is prevented.

[0015] bottom surface of the rubber elastic body 19 and the casing 10 exhibits the same action as the stopper plate of FIG.

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[Effects of the Invention] As described above, the anti-vibration rubber of the present invention is separated from the bottom surface in the casing, and has a cylindrical shape in the center.
A substantially disk-shaped rubber elastic body that holds the support bracket
Hemisphere at the lower end of the cylindrical support bracket
And a cover of approximately the same shape
Because the rubber cushion part was formed integrally with the rubber elastic body,
The structure is simple and easy to handle.
Very little pace is required, and extreme load during use
There is an advantage that no shock is given to the device or the like even when it is added .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a conventional anti-vibration rubber.

[Explanation of symbols]

 10 casing 11 screw hole 12 support bracket 13 rubber elastic body 14 circumferential groove 15 space 16 air vent hole 19 rubber elastic body

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Yamashita 2-1, 1-1 Sakae Oda, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. Actually open sho 59-18620 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F16F 15/00-15/32 F16F 1/00-6/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A casing having a bottom, a tubular support fitting erected in a central portion of the casing, and an outer edge portion supported by the casing. Supported by separating from the bottom of the casing
In an anti-vibration rubber having a substantially disc-shaped rubber elastic body,
A mortar-shaped recess is formed in the center of the bottom inner surface of the support fitting
A hemispherical cover is provided at the lower end of the cylindrical support fitting.
While covering the cover with a substantially same shape as the cover.
A rubber cushion, wherein a rubber cushion is formed integrally with the rubber elastic body .