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Title:
FUEL PUMP
Document Type and Number:
Japanese Patent JP2007187145
Kind Code:
A
Abstract:

To provide a fuel pump preventing accumulation of fuel and foreign matter in a bearing hole of a fuel delivery side provided with a bearing of a rotary shaft of a rotor.

A motor part 13 is a brushless motor, and sucked-in fuel is pressurized by rotating an impeller 24 of a pump part 12 rotatively driven by the motor part 13. An insulating resin material 4 is molded to cover a coil 42, and it integrally forms an end cover 50 covering an end in an opposite side of the pump part 12 with respect to a stator core 30. In the end cover 50, the bearing hole 52 for bearing a shaft 72 is formed in a center part. The bearing hole 52 directly bears the shaft 72, and a bottom is blocked. In the end cover 50, a delivery passage 206 is formed, decentered from the bearing hole 52. The delivery passage 206 is formed to linearly pierce the end cover 50 in an axial direction, and it is directly overlapped and communicated with the bearing hole 52.


Inventors:
OSADA KIYOSHI
SUMIYA SHINJI
Application Number:
JP2006154435A
Publication Date:
July 26, 2007
Filing Date:
June 02, 2006
Export Citation:
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Assignee:
DENSO CORP
International Classes:
F02M37/08; F02M37/10; F04D5/00; H02K5/167; H02K7/14
Domestic Patent References:
JP2003343439A2003-12-03
JPS59105073U1984-07-14
JPH05180172A1993-07-20
JPH0727031A1995-01-27
JP2005315243A2005-11-10
Foreign References:
WO2005026555A12005-03-24
Attorney, Agent or Firm:
Masaki Hattori
South Island Noboru