fuel supply device

Abstract

A fuel supply device, comprising: a fuel pump (4) is held by a pump holding wall (8) of a first casing (1) and a fitting wall (22) of a second casing (2); The buckle fixing mechanism (55) connects these pump holding walls (8) and the fitting walls (22), and uses the elastic piece (56), the locking hole (57) and the locking claw (58) to form a buckle Fixing mechanism (55), the elastic piece (56) makes the fitting wall (22) fit with the inner circumference of the pump holding wall (8), extends from the end of the pump holding wall (8) and fits with the fitting wall (22) contact with the outer surface of the fitting wall (22), the locking hole (57) is provided at the end of the elastic piece (56), the locking claw (58) protrudes from the outer surface of the fitting wall (22), and the elastic piece ( 56) is engaged with the locking hole (57), and a restricting wall (60) that restricts the deflection of the elastic piece (56) outward in the radial direction is provided in the second housing (2). Accordingly, it is possible to provide a fuel supply device that can easily release the engaged state of the snap fixing mechanism without being obstructed by the attachment flange.

Description

technical field [0001] The present invention mainly relates to a fuel supply device for supplying fuel to a fuel injection valve of an engine, and more particularly to an improvement of the fuel supply device. The first housing has a base portion having a fuel take-out pipe at one end and a mounting flange attached to the fuel tank at the other end, and a pump holding wall, the base portion closing an opening of the fuel tank , the pump holding wall extends into the fuel tank from the base portion, the second housing cooperates with the pump holding wall to hold the fuel pump and has a fuel pipe for guiding the discharged fuel of the fuel pump to The fuel take-out tube. Background technique [0002] The fuel supply device described above is known as disclosed in Patent Document 1. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2008-82263 Contents of the invention [0006] The problem to be solved by th...

AI Technical Summary

Problems solved by technology

In such a fuel supply device in which the pump holding wall and the second casing are connected by a snap-fit ​​mechanism so that the first casing and the second casing are combined with each other, the device's friction caused by the snap-fit ​​mechanism is suppressed. It is effective to increase the diameter, but in the structure disclosed above, there is a disadvantage that since the end portion of the elastic piece is close to the mounting flange, when the elastic piece is bent outward in the radial direction to release the buckle In the engaged state of the fixing mechanism, the mounting flange becomes an obstacle, and the release operation becomes difficult

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