Fuel pump for vehicle having brush holder for preventing shake of brush

Patent metadata

Field	Value
Publication number	US-10447121-B2
Application number	US-201615299232-A
Country	US
Kind code	B2
Filing date	Oct 20, 2016
Priority date	Oct 23, 2015
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

The present invention relates to a fuel pump for vehicle supplying power to a commutator and an armature through a brush to prevent the brush from shake, which comprises the brush, a spring mounted on a top of the brush, the commutator contacted to a bottom of the brush, a brush holder surrounding the brush and the spring, and a first hole formed for fuel flow at a front side of the brush holder in a rotational direction of the commutator based on the brush.

First claim

What is claimed is:

1. A brush holder provided in a fuel pump for a vehicle to prevent shaking of a brush, the fuel pump comprising:
the brush;
a spring mounted on a top of the brush; and
a commutator, a top of which is in contact with a bottom of the brush, to supply power to the commutator and an armature through the brush;
wherein the brush holder is formed to surround the brush and the spring, and a lower portion of the brush holder is opened so that the brush and the commutator are in contact with each other;
wherein the brush holder comprises a first hole formed for fuel ingress at a front side of the brush holder in a rotational direction of the commutator based on the brush; and
wherein the first hole is formed at a position corresponding to an upper portion of the brush that is in a tilted state when the commutator rotates and thereby a lower portion of the brush moves toward the front side of the brush holder, such that the upper portion of the brush is adhered to a back side of the brush holder through fuel introduced in a direction opposite to the rotational direction of the commutator, thereby preventing the brush from shaking.

2. The brush holder according to claim 1 , wherein the first hole is extended to a bottom of the brush holder and a bottom of the first hole is open.

3. The brush holder according to claim 1 , wherein the brush holder further includes a second hole for fuel flow at a lower portion of the back side of the brush holder in the rotational direction of the commutator based on the brush.

Assignees

• Coavis

Inventors

• Lee Hyun Tae
• Yu Gyu Sang
• Sohn In Seok

Classifications

• H02K13/10 Primary

  Arrangements of brushes or commutators specially adapted for improving commutation · CPC title

• H02K5/148

  Slidably supported brushes · CPC title

• H02K5/12

  specially adapted for operating in liquid or gas (combined with cooling arrangements H02K9/00) · CPC title

• F02M51/04

  Pumps peculiar thereto · CPC title

• H01R39/385

  Means for mechanical fixation of the brush holder · CPC title