JPS62237133A - Vibration-proof support-body - Google Patents

Abstract

PURPOSE:To obtain a vibration-proof support-body having a suitable damping capacity by providing a lumen at at least one, with its annular end-face left untouched, of the bottom surfaces of the vibration-proof support-body which is a rubber elastic body whose upper and lower bottom surfaces are stuck with metal plates and enclosing fully a viscous-body or a visco-elastic-body into the lumen. CONSTITUTION:The structure is such that metal plates 4, 5 are stuck on the upper and lower bottom surfaces 2, 3 of a rubber elastic body 1 and a bolt 6 for fitting a vibration source to the metal plate 4 is implanted and an idle hole 7 for fitting the metal plate 5 to a base-substance is holed. And at the lower bottom surface 3 of the rubber elastic body 1 with its annular end-face left untouched is opened a lumen 9, into which is filled up a viscous-body or a visco-elastic-body 10. Thus, when the rubber elastic body 1 undergoes repeated deformations caused by vibrations from outside force, the viscous body or the like 10 enclosed in the lumen 9 also comes to suffer from forced deformations, thereby manifesting viscosity effect wherein damping capacity is brought about by the loss of inside energy. Accordingly, an excellent vibration-proof support-body integrating anti-vibration capacity of the rubber elastic body 1 can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolating support, and more particularly to a vibration isolating support having a damping ability suitable for an engine mount of an automobile.

Anti-vibration supports consisting of a rubber body sandwiched between upper and lower mounting brackets have traditionally been used as vibration-isolating supports for vibration sources such as automobile engines, but when using -115 rubber material, the damping performance is improved. There is a drawback that the amplitude is insufficient and the amplitude becomes excessive during resonance.

In addition, if a rubber material with particularly high damping performance is used, dynamic elasticity (
This results in a disadvantage that the dynamic spring constant (dynamic spring constant) becomes high and the vibration damping performance deteriorates. In order to improve these drawbacks, some attempts have been made to attach an oil damper in combination with the above-mentioned vibration isolation support, but this requires installation space for the oil damper, increases costs, and furthermore, due to the nature of the oil damper, it can only be used in one direction. It could not be said that the damping force was sufficient.

The present invention aims to improve the above-mentioned drawbacks of the prior art, and provides a vibration isolation support having damping ability.

That is, an object of the present invention is to advantageously utilize the damping force due to internal energy loss of a viscous body or a viscoelastic body, and to integrate the damping element into a vibration isolating support.

The present invention provides a vibration-proofing support made by bonding metal plates to the upper and lower surfaces of a rubber elastic body, in which a lumen is provided with an annular end surface left on at least one bottom surface, and a viscous material or a viscous material or This is an anti-vibration support made by filling and enclosing a viscoelastic material.

Specifically, a washer having a through hole communicating with the inner cavity is vulcanized and bonded to the annular end face, and a viscous or viscoelastic body is inserted into the inner cavity before fixing the washer and the metal plate. It is.

In such a case, in order to ensure the sealing of the enclosure, it is preferable to provide an annular groove in the contact surface of the washer or metal plate and fit a rubber elastic 0-IJ song into the groove.

In particular, in order to more effectively provide the damping ability of the viscous or viscoelastic body, it is desirable that the metal plate has protrusions (WW) that protrude into the inner cavity.

The viscous material or viscoelastic material to be filled into the inner cavity according to the present invention may be a known material, but examples include viscous materials such as silicone oil, polybutene, glycols, butadiene acrylonitrile-based synthetic rubber, polyisobutylene-based synthetic rubber, and polybutene. A viscoelastic material containing polyvinyl chloride, an inorganic optical fiber, etc. may be used.

FIG. 1 is a partially cutaway side view of a preferred example of the vibration-proof support A of the present invention. 1 is a rubber elastic body, and metal plates 4 and 5 are adhered to the upper and lower surfaces 2 and 3 of the rubber elastic body. In the figure, a bolt 6 for attaching a vibration source (not shown) is attached to the metal plate 4. Further, the metal plate 5 has a free hole 7 for attachment to a base body (not shown), and is attached to the base body (not shown) using screws. The rubber elastic body 1 leaves an annular end face 8 on the lower bottom surface 3 and opens a lumen 9, and the lumen 9 is filled with the above-described viscous or viscoelastic body 10.

A structure in which a washer 12 having a through hole 11 having the same diameter as the inner cavity 9 is vulcanized and adhered to the annular end face 8 and the washer 12 is fixed to the metal plate 5 is more preferable. Preferably, the washer 12 and the metal plate 5 are fixed by welding.

When the rubber elastic body 1 of the anti-vibration support A having the above structure is repeatedly deformed by vibrations caused by an external force, the viscous body etc. 10 sealed in the inner cavity 9 is also forcibly deformed, and a viscous effect is expressed. This produces a damping ability, and together with the vibration-proofing performance of the rubber elastic body 1, it becomes a good vibration-proofing support.

FIG. 2(a) shows another example of the vibration-proof support A, in which the metal plate 5 is provided with protrusions 13 to increase the contact area with the filled viscous material 10 and improve the viscous effect. This is what I am trying to do.

In addition to the case in which the protrusion 13 is implanted in the metal plate 5 from the lower base side, it is also possible to implant it in the metal plate 4 from the upper base side. FIG. 2(b) shows an example of this, in which a protrusion 13 is provided protruding from the tail of a bolt 6 welded to a metal plate 4, and this is vulcanized and bonded to a rubber elastic body 1. It is.

FIG. 3 also shows another example of the present invention, in which the leakage of the filling material is prevented especially when the filling material is a viscous material. On the contact surface, an annular groove 14 is provided on the metal plate 5 side in the figure, and an 0-I made of a rubber elastic body is provided in this groove 14.
J-Song 5 is inserted to provide a leak-preventing effect.

Still another example in FIG. 4 is one in which the inner cavity 9 reaches not only the lower bottom surface 3 but also the upper bottom surface 2, and the rubber elastic body 1 has a so-called cylindrical shape, and there is a viscous material etc. 10 inside. It is filled and enclosed.

However, on the upper bottom surface 2 there is a washer 1 similar to that shown in FIG.
6 is vulcanized and bonded, and the metal plate 4 is fixed to this. Similarly to the metal plate 5, the metal plate 4 has an annular groove 1.
7 is provided, and an O-ring 18 is fitted into this groove 17.

In each of the above descriptions, the metal plate 5 fixed to the washer 12 does not particularly require the use of a special member, and is shown in FIG.
b) A flange 511 provided on the base body as shown in
It is possible to use it as is.

As described above, this invention skillfully combines the damping performance of a viscous body and a viscoelastic body with the conventional vibration isolation support using a rubber elastic body, and is extremely effective for vibration isolation, especially when an engine is idling. It is something.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the invention, FIGS. 2(a) and 2(b) are sectional views of another embodiment, and FIGS. 3 and 4 are sectional views of still another embodiment. 1... Rubber elastic body 4, 5... Metal plate 9...
・Inner cavity 10... Viscous body or viscoelastic body Patent applicant Bridgestone Co., Ltd. Procedures Amendment January 16, 1988 Commissioner of the Patent Office Black 1) Mr. Yu Akira■,
Indication of the case Patent application filed on December 19, 1985 (Patent application 1983-
103782 as the original patent application) 2. Name of the invention Anti-vibration support 3. Relationship with the person making the amendment Patent applicant (527) Brideston Co., Ltd. 4 , has a drop ability suitable for agent mounting, etc.
Particulars ■1 Title of the invention Vibration isolating support 2, Claim 1, In a vibration isolating support formed by bonding metal plates to the upper and lower surfaces of a rubber elastic body, A lumen is provided, leaving at least one annular end surface, and the lumen is filled with a viscous or viscoelastic material. 2. The vibration isolating support according to claim 1,
1. A vibration-proof support made by vulcanizing and adhering a washer having a through hole communicating with the inner cavity to the main vertical annular end face, and fixing the cough washer and a metal plate. 3. In the vibration isolation support according to claim 2,
A vibration-proof support body comprising an annular groove opening in the contact surface between a washer and a metal plate in contact with the washer, and a rubber elastic O-ring inserted into the groove. 3. Detailed Description of the Invention The present invention relates to a vibration-proof support, particularly for automobile engineering #I-/
& /Tl rh a+? −r Jp ++, ze − M 4 I9 μ 7, ikue = −h
+--w +++ related to the support body. Anti-vibration supports consisting of a rubber body sandwiched between upper and lower mounting brackets have traditionally been used as vibration-isolating supports for vibration sources such as automobile engines, but when ordinary rubber materials are used, the damping performance is insufficient. However, it has the disadvantage that the amplitude becomes excessive during resonance. In addition, if a rubber material with particularly high damping performance is used, dynamic elasticity (
This results in a disadvantage that the dynamic spring constant (dynamic spring constant) becomes high and the vibration damping performance deteriorates. In order to improve these drawbacks, some attempts have been made to attach an oil damper in combination with the above-mentioned vibration isolation support, but this requires installation space for the oil damper, increases costs, and furthermore, due to the nature of the oil damper, it can only be used in one direction. It could not be said that the damping force was sufficient. The present invention aims to improve the above-mentioned drawbacks of the prior art, and provides a vibration isolation support having damping ability. That is, an object of the present invention is to utilize a viscous body or a viscoelastic body in a way that is not so strong as to cause a loss, and to integrate the damping element into a vibration isolating support. It's about incorporating it. This invention relates to a vibration-proofing support formed by bonding a metal plate to the upper and lower surfaces of a rubber elastic body, in which an annular end surface is left on at least one of the upper and lower surfaces of the rubber elastic body, and a bore is provided in the metal plate. The plate is a vibration-proofing support formed by passing through a protrusion that protrudes into a lumen, completely filling the lumen, and enclosing a viscous material or a viscoelastic material. A washer having a through hole communicating with the inner cavity is vulcanized and bonded to the annular end surface of the rubber elastic body, the cough washer and the metal plate are fixed, and an annular groove is further provided in the contact surface between the washer and the metal plate in contact with the washer. ,
A preferred embodiment is to fit a rubber elastic O-ring into the groove. In order to effectively provide the damping ability of a viscous body or a viscoelastic body, the metal plate in this invention is provided with a protrusion that protrudes into the inner cavity. The contact area with the viscous or viscoelastic body that completely fills the inner cavity and is sealed on the outer surface of the protrusion increases, and the viscous effect is strengthened by the pushing action, contributing to obtaining a large damping capacity. The viscous material or viscoelastic material to be filled into the inner cavity according to the present invention may be a known material, but examples include viscous materials such as silicone oil, polybutene, glycols, butadiene acrylonitrile-based synthetic rubber, polyisobutylene-based synthetic rubber, and polybutene. A viscoelastic material containing polyvinyl chloride, an inorganic optical fiber, or the like may be used. FIG. 1 is a partially cutaway side view of a preferred example of the vibration-proof support A of the present invention. 1 is a rubber elastic body, which has an upper bottom surface 2 and a lower bottom surface 3.
A metal plate 4.5 is glued to the top. In the figure, the metal plate 4 has a port 6 for attaching a vibration source (not shown), and the metal plate 5 has a free hole 7 for attaching it to a base (not shown), and is attached with screws. In this example, the rubber elastic body 1 leaves an annular end surface 8 on the lower bottom surface 3 and has an inner cavity 9.
This annular end surface 8 is provided with a through hole 1 having the same diameter as the inner cavity 9.
1 is vulcanized and bonded, and this washer 12 is fixed to the metal plate 5. However, the washer 12 may be omitted, and in any case, the metal plate 5 protrudes into the inner cavity 9. A protrusion 13 is provided to completely fill the interior of the inner cavity 9 and encapsulate the above-described viscous or viscoelastic body 10 therein. When the washer 12 is used, it is preferable that the washer 12 be fixed to the metal plate 5 by welding. When the rubber elastic body 1 of the anti-vibration support A having the above structure is repeatedly deformed by vibrations caused by an external force, the viscous body or viscoelastic body 10 filled and sealed inside the inner cavity 9 is also forcibly deformed. At this time, the increase in the contact area on the outer surface of the protrusion 13 produces an enhanced viscous effect, which produces an effective damping ability, which combines with the vibration damping performance of the rubber elastic body 1 to provide a good vibration damping support. becomes. In addition to the case where this protrusion 13 is implanted on the metal plate 5 on the lower base side, it is also possible to implant it on the metal plate 4 from the upper base side, an example of which is shown in FIG. A protrusion 13 is provided protruding from the tail of a bolt 6 welded to a metal plate 4, and this is vulcanized and bonded to the rubber elastic body 1. FIG. 3 shows the separate parts in this invention,
In order to prevent the filling material from leaking especially when filling and enclosing a viscous fluid, an annular groove 14 is provided on the metal plate 5 side in the figure at the contact surface between the washer 12 and the metal plate 5. This is an example in which an O-ring 15 made of a rubber elastic body is fitted, and another example in FIG. The body 1 has a so-called cylindrical shape, and a hollow lumen 9 thereof is filled with a viscous material or a viscoelastic material 10. A washer 16 is also vulcanized and bonded to the upper bottom surface 2, and the metal plate 4 is fixed thereto.The metal plate 4 is provided with an annular groove 17 in the same way as the metal plate 5. - The ring 18 is fitted. Also, in this example, both the upper and lower metal plates 4.
5 is provided with a protrusion 13. In each of the above descriptions, the metal plate 5 fixed to the washer 12 is not particularly required to use a special member, and the flange 5' provided on the base body can be used as is, as shown in FIG. It is possible. As described above, this invention skillfully combines the damping performance of a viscous material and a viscoelastic material with the conventional vibration-isolating support made of a rubber elastic material, and is extremely effective for damping vibrations, especially when an engine is idling. It is. 4. Brief Description of the Drawings FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of another embodiment, and FIGS. 3 and 4 are sectional views of still other embodiments. 1...Rubber elastic body 4.5...Metal plate 9...
・Inner cavity 10...Viscous body or viscoelastic body 13...Protrusion body

Claims (1)

[Scope of Claims] 1. In a vibration-proof support formed by bonding a metal plate to the upper and lower bottom surfaces of a rubber elastic body, a lumen is provided on at least one bottom surface leaving an annular end surface; A vibration-proof support made by filling and enclosing a viscous or viscoelastic material. 2. In the vibration-proof support according to claim 1,
A vibration isolating support formed by vulcanizing and adhering a washer having a through hole communicating with the inner cavity to an annular end face, and fixing the washer and a metal plate. 3. In the vibration isolation support according to claim 2,
A vibration-proof support body comprising an annular groove opening in the contact surface between a washer and a metal plate in contact with the washer, and a rubber elastic O-ring inserted into the groove. 4. The vibration isolating support according to claims 1 and 3, wherein the metal plate has a protrusion projecting into the inner cavity.