# US 2018/0023655 A1 · Fluid-filled vibration damping device

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- Number: US 2018/0023655 A1
- Document ID: US20180023655A1
- Status: Published application
- Kind: A1
- Application number: 15/720,391
- Filed: 2017-09-29
- Published: 2018-01-25
- Earliest claimed: 2015-08-24
- Assignees: Sumitomo Riko Company Limited
- Applicants: Sumitomo Riko Company Limited
- Inventors: Yasuhiro KOMIYA; Takashi HAYASHI
- Web page: https://patentgrep.com/patent/US20180023655A1

## CPC

- F16F 13/10: the wall being at least in part formed by a flexible membrane or the like (F16F13/14 - F16F13/18 take precedence)
- B29C 45/14: incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)}
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)

## Abstract

A fluid-filled vibration damping device including: an inner mounting member; an outer bracket formed by molding; a main rubber elastic body elastically connecting the inner mounting member and the outer bracket with each other; a fluid chamber for which a portion of a wall is constituted by the main rubber elastic body with a non-compressible fluid sealed therein; a caulking member whose material is different from a material of the outer bracket, the caulking member being fixed to the outer bracket in a projecting state; and a lid member constituting an other portion of the wall of the fluid chamber, the lid member being attached to the outer bracket by being fastened through caulking using the caulking member.

## Claims

### Claim 1

A fluid-filled vibration damping device comprising:
an inner mounting member;
an outer bracket formed by molding;
a main rubber elastic body elastically connecting the inner mounting member and the outer bracket with each other;
a fluid chamber for which a portion of a wall is constituted by the main rubber elastic body with a non-compressible fluid sealed therein;
a caulking member whose material is different from a material of the outer bracket, the caulking member being fixed to the outer bracket in a projecting state; and
a lid member constituting an other portion of the wall of the fluid chamber, the lid member being attached to the outer bracket by being fastened through caulking using the caulking member.

### Claim 2 (depends on 1)

The fluid-filled vibration damping device according to claim 1, wherein the outer bracket is made of synthetic resin.

### Claim 3 (depends on 1)

The fluid-filled vibration damping device according to claim 1, wherein the caulking member is fixed to the outer bracket as being partially buried in the outer bracket.

### Claim 4 (depends on 1)

The fluid-filled vibration damping device according to claim 1, wherein the caulking member is fixed to the outer bracket by being engaged in the outer bracket.

### Claim 5 (depends on 1)

The fluid-filled vibration damping device according to claim 1, wherein the lid member includes a flexible film, while a partition member is disposed in the fluid chamber to partition the fluid chamber into a pressure-receiving chamber whose wall is partially constituted by the main rubber elastic body and an equilibrium chamber whose wall is partially constituted by the flexible film on opposite sides of the partition member, and an orifice passage is formed communicating the pressure-receiving chamber and the equilibrium chamber with each other.