Metal bellows type accumulator
US-2018087665-A1 · Mar 29, 2018 · US
Accumulator
US10907657B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10907657-B2 |
| Application number | US-201716464650-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 10, 2017 |
| Priority date | Dec 2, 2016 |
| Publication date | Feb 2, 2021 |
| Grant date | Feb 2, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An accumulator includes a bellows 3 having a plurality of outer ridge portions and a plurality of inner annular ridge portions and configured to be capable of expanding and contracting, and a housing having a fluid supply port and fixed to one end of the bellows serving as a fixed end. An interior of the housing is partitioned in a sealed state into an inside and an outside of the bellows. The outer annular ridge portions are divided into at least a first sector and a second sector which are distributed in an expansion and contraction direction of the bellows such that the second sector is positioned between the first sector and the fixed end. The outer annular ridge portions included in the first sector have an outer diameter smaller than an outer diameter of the outer annular ridge portions included in the second sector.
First claim
Opening claim text (preview).
The invention claimed is: 1. An accumulator comprising: a bellows having a plurality of outer annular ridge portions and a plurality of inner annular ridge portions and configured to be capable of expanding and contracting, and a housing having a fluid supply port and fixed to one end of the bellows serving as a fixed end, the bellows having, in addition to the fixed end, a loose end opposed to the fixed end in an expansion and contraction direction of the bellows, an interior of the housing being partitioned in a sealed state into an inside and an outside of the bellows, wherein: the outer annular ridge portions are divided into at least a first sector and two second sectors which are distributed in an expansion and contraction direction of the bellows the outer annular ridge portions included in the first sector have an outer diameter smaller than that of the outer annular ridge portions included in the second sectors, and the first sector is disposed between the second sectors and occupies a center position between the fixed end and the loose end of the bellows in the expansion and contraction direction. 2. The accumulator according to claim 1 , wherein: the outer annular ridge portions of the first sector are distributed such that the outer diameter of the outer annular ridge portions of the first sector is gradually decreased toward the center position in the expansion and contraction direction of the bellows. 3. The accumulator according to claim 2 , further comprising a stay fixed to the housing and provided inside the bellows housed in the housing such that an inside of the bellows is configured to communicate with the fluid supply port, the inner annular ridge portions are divided into at least a third sector and a fourth sector which are distributed in the expanding and contraction direction of the bellows such that the fourth sector is positioned between the third sector and the fixed end, the inner annular ridge portions included in the third sector have an inner diameter larger than that of the inner annular ridge portions included in the fourth sector. 4. The accumulator according to claim 1 , further comprising a stay fixed to the housing and provided inside the bellows housed in the housing such that an inside of the bellows is configured to communicate with the fluid supply port, the inner annular ridge portions are divided into at least a third sector and a fourth sector which are distributed in the expanding and contraction direction of the bellows such that the fourth sector is positioned between the third sector and the fixed end, the inner annular ridge portions included in the third sector have an inner diameter larger than that of the inner annular ridge portions included in the fourth sector. 5. An accumulator comprising: a bellows having a plurality of outer annular ridge portions and a plurality of inner annular ridge portions and configured to be capable of expanding and contracting, and a housing having a fluid supply port and fixed to one end of the bellows serving as a fixed end, the bellows having, in addition to the fixed end, a loose end opposed to the fixed end in an expansion and contraction direction of the bellows, an interior of the housing being partitioned in a sealed state into an inside and an outside of the bellows, the accumulator further comprising a stay fixed to the housing and provided inside the bellows housed in the housing such that an inside of the bellows is configured to communicate with the fluid supply port in the bellows, wherein the inner annular ridge portions are divided into at least a third sector and two fourth sectors which are distributed in an expanding and contraction direction of the bellows, the outer annular ridge portions included in the third sector have an outer diameter equal to or smaller than that of the outer annular ridge portions included in the fourth sectors, the inner annular ridge portions included in the third sector have an inner diameter larger than that of the inner annular ridge portions included in the fourth sectors, and the third sector is disposed between the fourth sectors and occupies a center position between the fixed end and the loose end of the bellows in the expansion and contraction directions.
Assignees
Inventors
Classifications
with guiding or supporting means · CPC title
using gas · CPC title
- F15B1/103Primary
the separating means being bellows · CPC title
the flexible separating means being bellows · CPC title
with particular means for limiting wear · CPC title
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Frequently asked questions
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- What does patent US10907657B2 cover?
- An accumulator includes a bellows 3 having a plurality of outer ridge portions and a plurality of inner annular ridge portions and configured to be capable of expanding and contracting, and a housing having a fluid supply port and fixed to one end of the bellows serving as a fixed end. An interior of the housing is partitioned in a sealed state into an inside and an outside of the bellows. Th…
- Who is the assignee on this patent?
- Eagle Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F15B1/103. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 02 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).