Transfer device

• US 10,641,266 B2
• Filed: 01/06/2016
• Issued: 05/05/2020
• Est. Priority Date: 01/19/2015
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Takeda, Mitsuhiro, Mizuno, Yoshihiro, Kohno, Tetsuya, Soga, Yoshinobu, Moriyama, Syuji, Nitani, Hiromitsu, Inagaki, Takafumi
• Primary Examiner(s): Gooden, Jr., Barry
• Application Number:
  US15/539,434
• Publication Number:
  US 20170356444A1
• Time in Patent Office: 1,581 Days
• CPC Class Codes: F01C 21/0863 the fluid being the working fluid
• CPC Class Codes: F01C 21/108 with an axial surface, e.g. side plates
• CPC Class Codes: F04C 11/00 Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type combinations of such pumps specially adapted for elastic fluids F04C23/00; Pumping installations F04C13/00 takes precedence; specially adapted for elastic fluids F04C23/00; fluid gearing F16H
• CPC Class Codes: F04C 11/003 having complementary function
• CPC Class Codes: F04C 14/02 specially adapted for several machines or pumps connected in series or in parallel
• CPC Class Codes: F04C 14/065 Capacity control using a multiplicity of units or pumping capacities, e.g. multiple chambers, individually switchable or controllable
• CPC Class Codes: F04C 14/26 using bypass channels
• CPC Class Codes: F04C 15/064 with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps
• CPC Class Codes: F04C 2/344 with vanes reciprocating with respect to the inner member
• CPC Class Codes: F04C 2/3446 the inner and outer member being in contact along more than one line or surface
• CPC Class Codes: F04C 2240/20 Rotors
• CPC Class Codes: F04C 2240/30 Casings or housings
• CPC Class Codes: F04C 2240/60 Shafts
• CPC Class Codes: F04C 2270/56 Number of pump/machine units in operation
• CPC Class Codes: F04C 29/021 Control systems for the circulation of the lubricant

Abstract

A transfer device that includes a case that houses a transfer mechanism; a strainer that suctions oil stored in a lower portion of the case; a valve body that has a hydraulic supply circuit that supplies a hydraulic pressure to the transfer mechanism and a suction oil path that discharges an extra hydraulic pressure that is extra for the hydraulic supply circuit; a first suction inlet that communicates with one of the suction oil path and the strainer and a second suction inlet that communicates with the other of the suction oil path and the strainer, and a balanced vane pump.

Claims

1. A transfer device comprising:

a case that houses a transfer mechanism;

a strainer that suctions oil stored in a lower portion of the case;

a valve body that has a hydraulic supply circuit that supplies a hydraulic pressure to the transfer mechanism and a suction oil path that discharges extra hydraulic pressure that is extra for the hydraulic supply circuit;

a first suction inlet that communicates with one of the suction oil path and the strainer and a second suction inlet that communicates with the other of the suction oil path and the strainer; and

a balanced vane pump that has;

a drive shaft, a rotor fixed to the drive shaft, a vane capable of protruding and retracting in a radial direction with respect to the rotor, and a cam ring, an inner peripheral surface of the cam ring being in sliding contact with a distal end of the vane,

a first suction port which faces the first suction inlet, opens to an inner circumferential side of the cam ring and into which oil flows from the first suction inlet,

a second suction port which faces the second suction inlet, opens to the inner circumferential side of the cam ring and into which oil flows from the second suction inlet,

a first discharge outlet and a second discharge outlet that discharge oil having flowed thereinto from the first suction inlet and the second suction inlet to the hydraulic supply circuit, and

a communication oil path disposed on the inner circumferential side of the cam ring as viewed from an axial direction of the drive shaft to communicate between the first suction port and the second suction port,

wherein the communication oil path has a first communicating oil path that extends between the first suction port and the second suction port on a first side of the drive shaft and a second communicating oil path that extends between the first suction port and the second suction port on a second side of the drive shaft opposite the first side of the drive shaft, as viewed from the axial direction of the drive shaft.

2. The transfer device according to claim 1, wherein

the valve body is disposed on an opposite side of the vane pump from the strainer.

3. The transfer device according to claim 1, wherein

the communication oil path communicates between an inner circumferential side, centered on the drive shaft, of the first suction port and an inner circumferential side, centered on the drive shaft, of the second suction port.