Hydraulic actuator
AssigneeKabushiki Kaisha Ogura
InventorKiyoshi Kimura
Life of this patent
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Abstract
A hydraulic actuator includes a switching part that is provided with an oil passage for sending pressurized oil generated by a hydraulic pump to a tool and returning return oil from the tool to the hydraulic pump. The switching part switches a route of at least one of the pressurized oil and the return oil. The switching part includes an operating portion (for example, an operation knob) and an axis portion (for example, a spool) that advances or retreats when the operating portion is turned. When the operating portion is turned, the axis portion advances or retreats in a direction orthogonal to a direction of turning the operating portion, whereby the route of the oil passage is switched.
Claims5
A hydraulic actuator comprising:
- a hydraulic pump that generates pressurized oil;
- a tool that is operated by the pressurized oil generated by the hydraulic pump;
- an oil passage for sending the pressurized oil generated by the hydraulic pump to the tool and returning return oil from the tool to the hydraulic pump;
- a switching part provided with the oil passage and configured to switch a route of at least one of the pressurized oil and the return oil, wherein
- the switching part includes an operating portion and an axis portion that advances or retreats when the operating portion is turned, and
- when the operating portion is turned, the axis portion advances or retreats in a direction orthogonal to a direction of turning the operating portion, whereby the route of at least one of the pressurized oil and the return oil in the oil passage is switched.
Dependencies are inferred from the claim text.