Vehicle hydraulic supply apparatus

Patent metadata

Field	Value
Publication number	US-9938973-B2
Application number	US-201414916042-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Sep 30, 2013
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A vehicle hydraulic supply apparatus with an oil passage component member that includes a first surface being in contact with a first rotor that is a pump rotor of the mechanical oil pump, a second surface facing in a direction opposite to a direction in which the first surface faces and being in contact with a second rotor that is a pump rotor of the electric oil pump, and a suction oil passage and a discharge oil passage of the mechanical oil pump which are located between the first surface and the second surface, and a suction oil passage and a discharge oil passage of the electric oil pump which are located between the first surface and the second surface.

First claim

The invention claimed is:

1. A vehicle hydraulic supply apparatus comprising:
a mechanical oil pump configured to be driven by a driving source of a wheel;
an electric oil pump configured to be driven by an electric motor; and
an oil passage component member for the mechanical oil pump and the electric oil pump, wherein
the oil passage component member includes
a first surface being in contact with a first rotor that is a pump rotor of the mechanical oil pump,
a second surface facing in a direction opposite to a direction in which the first surface faces and being in contact with a second rotor that is a pump rotor of the electric oil pump, and
a suction oil passage and a discharge oil passage of the mechanical oil pump which are located between the first surface and the second surface, and a suction oil passage and a discharge oil passage of the electric oil pump which are located between the first surface and the second surface,

a rotation shaft center of the first rotor is disposed parallel to a rotation shaft center of the second rotor, and
a rotation direction of the first rotor is opposite to a rotation direction of the second rotor.

2. The vehicle hydraulic supply apparatus according to claim 1 , wherein
the oil passage component member includes, in an outer peripheral surface of the oil passage component member, a first discharge end opening that is an end opening of the discharge oil passage of the mechanical oil pump and a second discharge end opening that is an end opening of the discharge oil passage of the electric oil pump, and
the first discharge end opening and the second discharge end opening are disposed at different locations as viewed from an axial direction of a rotation shaft center of the first rotor or the second rotor, and at a location overlapping each other as viewed from a circumferential direction of the rotation shaft center.

3. The vehicle hydraulic supply apparatus according to claim 2 , wherein
an upstream end portion of the suction oil passage of the mechanical oil pump and an upstream end portion of the suction oil passage of the electric oil pump are configured as a common oil passage.

4. The vehicle hydraulic supply apparatus according to claim 3 , wherein
the oil passage component member includes, in an outer peripheral surface of the oil passage component member, a suction end opening shared by the suction oil passage of the mechanical oil pump and the suction oil passage of the electric oil pump, a first discharge end opening that is an end opening of the discharge oil passage of the mechanical oil pump, and a second discharge end opening that is an end opening of the discharge oil passage of the electric oil pump, and
the first discharge end opening and the second discharge end opening are open in a direction opposite to a direction in which the suction end opening is open.

5. The vehicle hydraulic supply apparatus according to claim 3 , wherein
an angular range including a suction port of the mechanical oil pump with respect to a rotation shaft center of the first rotor and an angular range including a suction port of the electric oil pump with respect to a rotation shaft center of the second rotor overlap each other.

6. The vehicle hydraulic supply apparatus according to claim 2 , wherein
the discharge oil passage of the mechanical oil pump and the discharge oil passage of the electric oil pump do not overlap each other as viewed from an axial direction of the rotation shaft centers of the first rotor and the second rotor, and overlap each other as viewed from a circumferential direction of the rotation shaft centers, in a region radially outward of the first rotor and the second rotor.

7. The vehicle hydraulic supply apparatus according to claim 1 , wherein
an upstream end portion of the suction oil passage of the mechanical oil pump and an upstream end portion of the suction oil passage of the electric oil pump are configured as a common oil passage.

8. The vehicle hydraulic supply apparatus according to claim 7 , wherein
an angular range including a suction port of the mechanical oil pump with respect to a rotation shaft center of the first rotor and an angular range including a suction port of the electric oil pump with respect to a rotation shaft center of the second rotor overlap each other.

9. The vehicle hydraulic supply apparatus according to claim 1 , wherein
the oil passage component member includes, in an outer peripheral surface of the oil passage component member, a suction end opening shared by the suction oil passage of the mechanical oil pump and the suction oil passage of the electric oil pump, a first discharge end opening that is an end opening of the discharge oil passage of the mechanical oil pump, and a second discharge end opening that is an end opening of the discharge oil passage of the electric oil pump, and
the first discharge end opening and the second discharge end opening are open in a direction opposite to a direction in which the suction end opening is open.

10. The vehicle hydraulic supply apparatus according to claim 9 , wherein
the discharge oil passage of the mechanical oil pump and the discharge oil passage of the electric oil pump do not overlap each other as viewed from an axial direction of the rotation shaft centers of the first rotor and the second rotor, and overlap each other as viewed from a circumferential direction of the rotation shaft centers, in a region radially outward of the first rotor and the second rotor.

11. The vehicle hydraulic supply apparatus according to claim 1 , wherein
an angular range including a suction port of the mechanical oil pump with respect to a rotation shaft center of the first rotor and an angular range including a suction port of the electric oil pump with respect to a rotation shaft center of the second rotor overlap each other.

12. The vehicle hydraulic supply apparatus according to claim 11 , wherein
the discharge oil passage of the mechanical oil pump and the discharge oil passage of the electric oil pump do not overlap each other as viewed from an axial direction of the rotation shaft centers of the first rotor and the second rotor, and overlap each other as viewed from a circumferential direction of the rotation shaft centers, in a region radially outward of the first rotor and the second rotor.

13. The vehicle hydraulic supply apparatus according to claim 1 , wherein
the discharge oil passage of the mechanical oil pump and the discharge oil passage of the electric oil pump do not overlap each other as viewed from an axial direction of the rotation shaft centers of the first rotor and the second rotor, and overlap each other as viewed from a circumferential direction of the rotation shaft centers, in a region radially outward of the first rotor and the second rotor.

14. The vehicle hydraulic supply apparatus according to claim 1 , wherein
the discharge oil passage of the mechanical oil pump from a first discharge port that receives oil discharged from the mechanical oil pump to a first discharge end opening that is an end opening of the discharge oil passage of the mechanical oil pump is located entirely between the first surface and the second surface, and
the discharge oil passage of the electric oil pump from a second discharge port that receives oil discharged from the electric oil pump to a second discharge end opening that is an end opening of the discharge oil passage of the electric oil pump is located entirely between the first surface and the second surface.

Assignees

• Aisin Aw Co

Inventors

• Kito Masashi
• FUKUI Taisuke
• Murai Osamu

Classifications

• F04C15/008

  Prime movers · CPC title

• F04C15/06

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C2/3441

  the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation · CPC title

• F04C2/102

  the two members rotating simultaneously around their respective axes · CPC title

• B60R17/02

  Systems, e.g. central lubrication systems · CPC title