EP0164887A2
Expired / Lapsed
EP
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Vibration isolating apparatus
Assignee: Bridgestone Corp
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Filing: 1985-05-07
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Granted: —
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Expires: 2005-05-07
Abstract
Abstract A vibration isolating apparatus employed for mounting, for example, the engine of an automobile includes a tube communicated with a hollow chamber which is expanded and contracted by vibrations generated in the engine. The tube is provided therein with a mass member which has a larger density than that of a fluid sealed inside the hollow chamber. The mass member encourages the occurrence of resonance of the fluid inside the tube, whereby the vibrations are absorbed by means of the air-column resonance.
Inventors
- 👤 Takao Ushijima
- 👤 Takeshi Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 19:40
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/22; F16F13/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A vibration isolating,apparatus for reducing vibrations from a vibration source, said apparatus including a vibration absorbing main body interposed between said vibration source and a vibration receiving portion, said main body having a portion thereof made of a resilient material and a hollow chamber capable of being expanded and contracted, said hollow chamber being filled with a fluid, characterized in that a mass member having a larger density than that of said fluid is disposed inside a tube which has one end thereof communicated with said hollow chamber, whereby the mass moving inside said tube is increased such as to encourage the occurrence of resonance of said fluid.
Claim 2
Dependent Claim
108 words
A vibration isolating,apparatus for reducing vibrations from a vibration source, said apparatus including a vibration absorbing main body interposed between said vibration source and a vibration receiving portion, said main body having a portion thereof made of a resilient material and a hollow chamber capable of being expanded and contracted, said hollow chamber being filled with a fluid, characterized in that a mass member having a larger density than that of said fluid is disposed inside a tube which has one end thereof communicated with said hollow chamber, whereby the mass moving inside said tube is increased such as to encourage the occurrence of resonance of said fluid.
Claim 3
Dependent Claim
25 words
'A vibration isolating apparatus according to Claim 1, wherein said fluid is air, and the other end of said tube opens to the atmospheric air.
Claim 4
Dependent Claim
19 words
A vibration isolating apparatus according to Claim 2, wherein said mass member is spherical and reciprocatable inside said tube.
Claim 5
Dependent Claim
16 words
A vibration isolating apparatus according to Claim 2, wherein the axis of said tube is spiralled.
Claim 6
Dependent Claim
24 words
A vibration isolating apparatus according to Claim 1, wherein said tube is provided with a stopper for restricting the movement of said mass member.
Claim 7
Dependent Claim
36 words
A vibration isolating apparatus according to Claim 5, wherein said stopper projects in such a manner as to reduce the inside diameter of said tube at the portion thereof at which said stopper is provided. 1
Claim 8
Dependent Claim
38 words
A vibration isolating apparatus according to Claim 5, wherein said stopper is constituted by a resilient member which is disposed inside said tube in such a manner as to abut against said mass member as it is moved.
Claim 9
Dependent Claim
48 words
A vibration isolating apparatus according to Claim 5, wherein said stopper is constituted by a bellows having one of the ends thereof attached to said tube and the other attached to said mass member, whereby said mass member is movable by means of the deformation of said bellows.
Claim 10
Dependent Claim
35 words
A vibration isolating apparatus according to Claim 1, wherein said fluid is liquid and the other end of the tube is communicated with another hollow chamber, said mass member being movable when said fluid circulates.
Claim 11
Dependent Claim
42 words
A vibration isolating apparatus according to Claim 1, wherein said fluid is air, and said mass member is a liquid which is disposed in an intermediate portion of said tube and is movable by the movement of the air inside said tube.
Claim 12
Dependent Claim
21 words
A vibration isolating apparatus according to Claim 1, wherein said mass member is rotatable inside said tube around its own axis.
Claim 13
Dependent Claim
37 words
A vibration isolating apparatus according to Claim 1, wherein said mass member has a spiral groove formed on its outer periphery and is rotatable by means of the resistance produced by said fluid as it passes thereover.
Claim 14
Dependent Claim
35 words
A vibration isolating apparatus according to Claim 12, wherein said fluid is liquid and the oher end of the tube is communicated with another hollow chamber, said mass member being rotatable when said fluid circulates.
Claim 15
Dependent Claim
22 words
A vibration isolating apparatus according to Claim 12, wherein said mass member is rotatably supported at both of its axial end portions.
Claim 16
Dependent Claim
17 words
A vibration isolating apparatus according to Claim 12, wherein said mass member has a propeller blade shape.
Claim 17
Dependent Claim
19 words
A vibration isolating apparatus according to Claim 1, wherein said mass member is reciprocatable and rotatable inside said tube.
References Cited (Backward Citations)
No citation records indexed.
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