GENERATOR MOTOR AND ELECTRIC VEHICLE USING SAME - HITACHI CONSTRUCTION MACHINERY

Title:

GENERATOR MOTOR AND ELECTRIC VEHICLE USING SAME

Document Type and Number:

WIPO Patent Application WO/2013/042490

Kind Code:

A1

Abstract:

[Problem] To evenly cool down an armature winding along the circumferential direction of a stator in a generator motor. [Solution] A generator motor includes a stator (1) fixed to the inner diameter side of a housing (18), a rotor (130) rotatably supported by a bearing (5), and an armature winding wound around the teeth of a stator core (110). A bracket (200) provided via the bearing (5) has a passage (201, 202) through which cooling oil flows and an injection hole (204) which communicates with the passage and injects cooling oil at a position opposite the winding end of the armature winding. Cooling oil is injected toward the winding end of the armature winding from the injection hole (204) of the bracket (200) arranged on both sides of a shaft (6) in the axial direction. In the flow distribution of oil from a plurality of the injection holes (204), oil flow is set to be greater the higher the position of the injection hole is above the level of the shaft (6). The placement pitch of the injection holes (204) on the bracket (200) is narrower at the upper positions in the vertical direction of the bracket (200), and gradually becomes wider closer to the level of shaft (6).

More Like This:

WO/2023/031280	ELECTRIC MOTOR
JP2022018777	ROTOR AND METHOD FOR MANUFACTURING THE SAME
JP3499745	WATER COOLING STRUCTURE FOR MOTOR

Inventors:

KIKUCHI SATOSHI (JP)
ISHIDA SEIJI (JP)
MIYOSHI TSUTOMU (JP)
SAWADA ITSURO (JP)
ISHIJIMA MAKOTO (JP)
AOKI SHIGENORI (JP)

Application Number:

PCT/JP2012/070636

Publication Date:

March 28, 2013

Filing Date:

August 13, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI CONSTRUCTION MACHINERY (JP)
HITACHI IND EQUIPMENT SYS (JP)
KIKUCHI SATOSHI (JP)
ISHIDA SEIJI (JP)
MIYOSHI TSUTOMU (JP)
SAWADA ITSURO (JP)
ISHIJIMA MAKOTO (JP)
AOKI SHIGENORI (JP)

International Classes:

H02K9/19

Domestic Patent References:

WO2008015798A1

2008-02-07

Foreign References:

JP2010057261A	2010-03-11
JPH0636363U	1994-05-13
JP2010130794A	2010-06-10
JP2010252502A	2010-11-04
JP2001008413A	2001-01-12
JP2010148272A	2010-07-01
JP2010057261A	2010-03-11

Other References: