Fuel supply device

Patent metadata

Field	Value
Publication number	US-11098684-B2
Application number	US-201917042227-A
Country	US
Kind code	B2
Filing date	Feb 14, 2019
Priority date	Mar 28, 2018
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A fuel supply device includes a fuel pump, a pump case, a cap, an O-ring, and a connection assembly. The pump case includes a case main body configured to receive the fuel pump and a discharge port connector. The cap includes a suction port connector. The O-ring is interposed between a fuel discharge port of the fuel pump and discharge port connector. The connection assembly includes a plurality of engagement projections and a plurality of engagement pieces configured to mate and engage with the engagement projections. The fuel discharge port of the fuel pump is configured to reach the O-ring coupled to the discharge port connector of the pump case simultaneous with the engagement between the engagement projections and the engagement pieces when the fuel suction port of the fuel pump and the suction port connector of the cap are connected together.

First claim

What is claimed is:

1. A fuel supply device comprising:
a fuel pump including a fuel discharge port and a fuel suction port;
a pump case including a case main body and a discharge port connector, wherein the case main body is configured to axially received the fuel pump therein, and wherein the discharge port connector is connected to be connected to the fuel discharge port of the fuel pump;
a cap including a suction port connector configured to be connected to the fuel suction port of the fuel pump;
a sealing member interposed between the fuel discharge port and the discharge port connector; and
a snap-fit connecting the pump case to the cap, wherein the snap-fit includes a plurality of engaging portions and a plurality of engaged portions, wherein the plurality of engaged portions mate and engage the plurality of engaging portions,
wherein the fuel discharge port of the fuel pump is configured to reach the sealing member coupled to the discharge port connector of the pump case upon engagement of the plurality of engaging portions and the plurality of engaged portions of the snap-fit when the fuel suction port of the fuel pump and the suction port connector of the cap are connected to each other.

2. The fuel supply device according to claim 1 , wherein:
the discharge port connector of the pump case is a male plug; and
the fuel discharge port of the fuel pump is a female socket configured to mate with and receive the male plug.

3. The fuel supply device according to claim 1 , wherein the pump case includes a window configured to allow visibility of the fuel discharge port of the fuel pump.

4. The fuel supply device according to claim 1 , wherein a fitting distance of the fuel discharge port of the fuel pump and the sealing member upon engagement of the plurality of engaging portions and the plurality of engaged portions of the snap-fit is equal to or greater than ½ of an axial thickness of the sealing member.

Assignees

• Aisan Ind

Inventors

• Takemura Morihiro
• Yoshida Koji
• Niwa Kensuke
• Nakamura Satoshi

Classifications

• F02M37/10 Primary

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

• F02M37/103

  Mounting pumps on fuel tanks · CPC title

• F02M37/106 Primary

  the pump being installed in a sub-tank · CPC title