Bellows-type hydraulic accumulator
AssigneeAdvics Co., Ltd.
InventorsKenichi Suzuki, Yuichiro Sakakibara
Life of this patent
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Abstract
A bellows-type hydraulic accumulator includes a main shell defining a pressure space, and a bellows unit sectioning the pressure space into a gas chamber and a liquid chamber. An auxiliary shell is disposed inside the liquid chamber and fixed to the main shell. The auxiliary shell has an auxiliary liquid chamber communicating with a liquid port. A movable wall member is disposed in the auxiliary shell in order to section the interior of the auxiliary shell into a first interior portion communicating with the liquid port and a second interior portion communicating with the liquid chamber via a communication passage formed in the auxiliary shell.
Claims15
A bellows-type hydraulic accumulator comprising:
- a main shell forming a pressure space;
- a bellows unit which is disposed in the pressure space and whose first end is fixedly secured to a first end wall of the main shell, the bellows unit sectioning the pressure space into an outer chamber serving as a gas chamber in which pressurized gas is enclosed, and an inner chamber serving as a main liquid chamber;
- an auxiliary shell disposed in the main liquid chamber and fixed to the main shell, the auxiliary shell having an auxiliary liquid chamber formed therein and communicating with a liquid port formed in the first end wall of the main shell;
- and
- a movable wall member disposed inside the auxiliary shell in a liquid-tight and slidable manner and sectioning the auxiliary liquid chamber into a first interior portion communicating with the liquid port and a second interior portion communicating with the main liquid chamber via a communication passage formed in the auxiliary shell.
A bellows-type hydraulic accumulator comprising:
- a main shell defining a pressure space;
- a bellows unit which is disposed in the pressure space and whose first end is fixedly secured to a first end wall of the main shell, the bellows unit sectioning the pressure space into an inner chamber serving as a gas chamber in which pressurized gas is enclosed, and an outer chamber serving as a main liquid chamber communicating with a first liquid port formed in a second end wall of the main shell;
- an auxiliary shell disposed outside the main shell and fixed to the main shell, the auxiliary shell having an auxiliary liquid chamber formed therein and communicating with the first liquid port;
- and
- a movable wall member disposed inside the auxiliary shell in a liquid-tight and slidable manner and sectioning the auxiliary liquid chamber into first and second interior portions, the first interior portion communicating with a second liquid port that is formed in a bottom wall portion of the auxiliary shell opposite the main shell, the second interior portion communicating with the main liquid chamber via the first liquid port.
Dependencies are inferred from the claim text.