Fuel pump

Patent metadata

Field	Value
Publication number	US-2016333833-A1
Application number	US-201415112347-A
Country	US
Kind code	A1
Filing date	Nov 14, 2014
Priority date	Jan 27, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A fuel pump may be driven by a brushless motor. The fuel pump may include a core; three supplying terminals configured to supply electric power to a coil wire fixed to the core and wound around the core; a resin layer holding the three supplying terminals; and a ground terminal held by the resin layer in a state of being insulated from the three supplying terminals, wherein the ground terminal may be electrically connected to a control circuit configured to control electric power supplied to the three supplying terminals.

First claim

1 . A fuel pump configured to be driven by a brushless motor, the fuel pump comprising:
a core; a plurality of supplying terminals configured to supply electric power to a coil wire fixed to the core and wound around the core; a fixing member holding the plurality of the supplying terminals; and a ground terminal held by the fixing member in a state of being insulated from the plurality of the supplying terminals, wherein the ground terminal is electrically connected to a control circuit configured to control electric power supplied to the plurality of the supplying terminals.

2 . The fuel pump as in claim 1 , further comprising a conducting portion configured to conduct between the plurality of the supplying terminals and the coil wire, wherein
the ground terminal electrically shields at least a part of the conducting portion.

3 . The fuel pump as in claim 1 , further comprising at least one metal member, wherein
the ground terminal is electrically connected to the at least one metal member.

4 . The fuel pump as in claim 3 , wherein
the ground terminal is in contact with the at least one metal member in a state where at least a part of the ground terminal is elastically deformed.

5 . The fuel pump as in claim 3 , further comprising a spring member made of a conductive material, wherein
the ground terminal is in contact with the spring member, and the spring member is in contact with the at least one metal member.

6 . The fuel pump as in claim 3 , wherein the ground terminal is directly in contact with the at least one metal member.

7 . The fuel pump as in claim 1 , further comprising at least one metal member, wherein
the ground terminal comprises: a terminal portion sticking out above the fuel pump and configured to electrically connect to the control circuit; a contacting portion being in contact with the at least one metal member; a held portion held by the fixing member; and a joining portion joining the terminal portion, the contacting portion and the held portion.

8 . The fuel pump as in claim 7 , wherein
the joining portion is elastically deformable.

Assignees

• Aisan Ind

Inventors

• Honda Yoshihiko
• Hamajima Akira
• Kamio Yoshiki

Classifications

• H02K5/08

  Insulating casings · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title

• F02M37/10

  submerged in fuel, e.g. in reservoir · CPC title

• H02K11/40

  Structural association with grounding devices · CPC title

• F02M37/08 Primary

  electrically driven · CPC title