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US 2025/0180043 A1Published application
Fluid pressure circuit
AssigneeEagle Industry Co., Ltd.
InventorYoshiyuki SHIMADA
Life of this patent
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Abstract
There is provided a fluid pressure circuit capable of saving energy. A fluid pressure circuit includes: a fluid supply source; a cylinder device; a valve that diverts some of a return fluid from the cylinder device to discharge the return fluid via a throttle; and a recovery passage R1 which is provided between the fluid supply source and the cylinder device and through which the return fluid flows from a first chamber of the cylinder device to a second chamber of the cylinder device.
Claims10
1:
- A fluid pressure circuit, comprising:
- a fluid supply source;
- a cylinder device including a first chamber and a second chamber which are partitioned from each other;
- a valve that is configured to divert some of a return fluid from the cylinder device to discharge the return fluid via a throttle;
- and
- a recovery passage which is provided between the fluid supply source and the cylinder device and through which the return fluid flows from the first chamber to the second chamber.
3 more elements
2:
- The fluid pressure circuit according to claim 1,
- wherein the fluid pressure circuit further includes a throttle passage provided with the throttle in the valve, and a low-fluid-resistance passage with a lower fluid resistance than the throttle passage, wherein the low-fluid-resistance passage is configured for communicating with the recovery passage.
3:
- The fluid pressure circuit according to claim 2,
- wherein the low-fluid-resistance passage is provided in the valve.
4:
- The fluid pressure circuit according to claim 2,
- wherein the throttle passage includes two passage parts, wherein one of the two passage parts is configured for communicating with the recovery passage.
5:
- The fluid pressure circuit according to claim 1, further comprising
- a switching valve provided in a flow passage between the fluid supply source and the valve to control an inflow and outflow of a fluid between the fluid supply source and the cylinder device, and
- the recovery passage is provided inside the switching valve.
6:
- The fluid pressure circuit according to claim 1,
- wherein the recovery passage is configured to allow for a flow therein only when the cylinder device is retracted.
7:
- The fluid pressure circuit according to claim 2,
- wherein the recovery passage is configured to allow for a flow therein only when the cylinder device is retracted.
8:
- The fluid pressure circuit according to claim 3,
- wherein the recovery passage is configured to allow for a flow therein only when the cylinder device is retracted.
9:
- The fluid pressure circuit according to claim 4,
- wherein the recovery passage is configured to allow for a flow therein only when the cylinder device is retracted.
10:
- The fluid pressure circuit according to claim 5,
- wherein the recovery passage is configured to allow for a flow therein only when the cylinder device is retracted.