Hydraulic circuit device and hybrid drive system using that hydraulic circuit device
First Claim
Patent Images
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 and at the lower portion of the case, 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 outside the valve body and in the oil pan, wherein the drain hole is arranged offset from the valve hole in a direction alternating with an axial direction of the valve hole.
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Accused Products
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.
44 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 and at the lower portion of the case, 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 outside the valve body and in the oil pan, wherein the drain hole is arranged offset from the valve hole in a direction alternating with an axial direction of 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, and 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, 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 and with an external portion outside the valve body and in the oil pan, wherein the drain hole is arranged in a position offset from the valve hole in a direction alternating with an axial direction of the valve hole. - View Dependent Claims (17, 18, 19, 20)
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Specification