Hydraulic circuit device and hybrid drive system using that hydraulic circuit device
First Claim
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1. A hydraulic circuit device, comprising:
- an oil pan at a lower portion of a case; and
a valve body arranged in the oil pan, comprising;
a valve hole;
a drain port;
a drain chamber, fluidly connected to the drain port and;
a drain hole fluidly connecting the drain chamber with an external portion of the valve body, wherein the drain hole is arranged offset from the valve hole.
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Abstract
Drain holes are arranged in positions offset from valve holes of a valve body. The drain holes have a long chimney-shaped space such that even if insulation material, that has peeled off of an electric motor, is suspended in oil, it is less likely to enter drain chambers through the drain holes.
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Citations
20 Claims
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1. A hydraulic circuit device, comprising:
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an oil pan at a lower portion of a case; and
a valve body arranged in the oil pan, comprising;
a valve hole;
a drain port;
a drain chamber, fluidly connected to the drain port and;
a drain hole fluidly connecting the drain chamber with an external portion of the valve body, wherein the drain hole is arranged offset from the valve hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A valve body arranged in an oil pan, as part of a hydraulic circuit device, at a lower portion of a case, the valve body comprising:
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at least one drain chamber fluidly connected to a drain port of the valve, each drain chamber associated with a valve hole to which a valve is attached; and
a drain hole fluidly connected with at least one drain chamber, wherein the drain hole is arranged in a position offset from the valve hole. - View Dependent Claims (17, 18, 19, 20)
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Specification