Liquid seal anti-vibration device and manufacturing method thereof

An anti-vibration device, liquid technology, applied in the direction of spring/shock absorber manufacturing, shock absorber, shock absorber-spring combination, etc., can solve the problem of flow reduction, internal pressure cannot be fully increased, and vibration reduction cannot be achieved Capability and other issues, to achieve the effect of preventing deformation, reducing vibration, and high vibration damping function

CN102884338AActive Publication Date: 2013-01-16BRIDGESTONE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-01-16

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Abstract

The disclosed liquid seal anti-vibration device is provided with: an inner tube (1) and outer tube (2); rubber bodies (3, 4) connecting said inner and outer tubes (1, 2) in a liquid-tight manner at two positions separated in the axis direction; a partition wall which, disposed between the two rubber bodies (3, 4), divides into two parts in the axis direction the space between the inner and outer tubes and which comprises an annular rigid member (5a) and an elastic member (5b); liquid chambers (8, 9) formed by sealing a noncompressible fluid in each of the spaces formed by the partition wall (5); and a restricted passage (7) allowing communication between the two liquid chambers (8, 9) formed by the partition wall (5). The aforementioned partition wall (5) is configured from the annular rigid member (5a), which protrudes from the inner tube (1) towards the outer tube side, and from the elastic member (5b), which connects said annular rigid member (5a) to the outer tube (2). The aforementioned restricted passage (7) is configured from one or multiple passage grooves (5c), which, formed on the outer peripheral surface of the annular rigid member (5a), extend at least one time around the circumference thereof, and from a bounding rigid tube member (6) which, attached to the aforementioned elastic member (5b), seals the openings of the passage grooves (5c) via a seal member (5d) in a liquid-tight manner.
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Description

technical field

[0001] The present invention relates to a so-called differential type liquid-filled anti-vibration device with high vibration damping performance suitable for use as a cab mount and a manufacturing method thereof. The present invention particularly proposes a technique for a liquid-enclosed type anti-vibration device provided with a large cross-sectional area for restricting passages in a rigid annular member that contributes to the formation of a partition wall. The passage groove of the liquid-filled type anti-vibration device can effectively prevent the undesired deformation, damage, etc. of the passage groove, and further effectively prevent the undesired deformation, damage, etc. Achieves excellent vibration damping function over a long period of time as desired. Background technique

[0002] Patent Documents 1-5 disclose conventional anti-vibration devices of this type. Patent Document 1 discloses "a liquid-enclosed support, which includes: an inner p...

Examples

Embodiment Construction

[0074] refer to figure 1 In the embodiment shown, reference numeral 1 designates an inner cylinder provided with a flange at the upper end shown. The inner cylinder 1 may be made of metal and is generally cylindrical. Reference numeral 2 denotes an outer cylinder which is spaced apart from the inner cylinder 1 on the circumferential outside of the inner cylinder 1 and provided with an upper end flange. The outer cylinder 2 is also generally cylindrical and may also be made of metal.

[0075] The inner cylinder 1 and the outer cylinder 2 are connected to each other in a liquid-tight manner by a rubber body 3 at the illustrated upper end and a rubber body 4 at the illustrated lower end. The rubber bodies 3 , 4 are spaced apart from each other in the axial direction of the inner cylinder 1 and the outer cylinder 2 and are arranged between the inner cylinder 1 and the outer cylinder 2 . The space defined by the inner cylinder 1 , the outer cylinder 2 and the rubber bodies 3 , ...