JPH0742642A - Fuel filter - Google Patents

Abstract

PURPOSE:To aim at lowering manufacturing cost of fuel filter by making semimanufactured goods common to each other. CONSTITUTION:This fuel filter is equipped with a filter body 10, which main body is a bag shaped screen 11, and a suction pipe 20 which is cylindric and has its one end communicating with the interior of the filter body 10 while its other end is communicating with a fuel inflow port 41 of an in-tank type electrically driven fuel pump 40. The suction pipe 20 is provided with a stretchable and flexible bellows shaped bellows part 21 which is fixed to a specified shape by a resin layer 30 of an optical hardening resin or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel filter for an in-tank type electric fuel pump used in vehicles and the like.

[0002]

2. Description of the Related Art A conventional example will be described with reference to a partially cutaway side view of FIG. The fuel filter 101 has a tubular shape with a filter body 110 mainly composed of a bag-shaped screen 111, one end of which is communicated with the inside of the filter body 110, and the other end is the fuel of the in-tank type electric fuel pump 140. The suction pipe 120 is provided so as to communicate with the inflow port 141. The suction pipe 120 itself is formed of a synthetic resin material into a substantially elbow shape, and does not have functions such as expansion and contraction and bending. An example of such a fuel filter is disclosed in Japanese Patent Laid-Open No. 62-87216.

[0003]

Generally, the structure of the fuel tank in the vehicle, the mounting method of the electric fuel pump, and the like are different for each vehicle type, and the specifications of the fuel filter are also different for each vehicle type. By the way, in the above-mentioned conventional fuel filter, it is necessary to set the specifications according to the type of vehicle to be installed, so that the number of types of fuel filters is increased and the cost is increased.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a fuel filter which can reduce the cost by sharing a semi-finished product of the fuel filter. It is in.

[0005]

According to the present invention for solving the above-mentioned problems, a filter main body having a bag-shaped screen as a main body, a tubular shape, and one end of which communicates with the inside of the filter main body and the other end In a fuel filter including a suction pipe communicating with a fuel inlet of an in-tank electric fuel pump, the suction pipe is provided with a bellows-like bellows portion that is expandable and contractible, and the bellows portion is a photocurable resin. It is fixed in a predetermined shape by a resin layer such as.

[0006]

According to the above-mentioned means, the bellows part of the intake pipe in the semi-finished product in which the bellows part of the intake pipe is not fixed by the resin layer is expanded and contracted and bent according to the specification according to the vehicle type to be mounted, and the photocurable resin or the like The resin layer is applied and solidified to obtain a finished product having the specified shape.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, which is a partially cutaway side view of a fuel filter, a fuel filter 1 is made of a synthetic resin filter body 10 having a bag-shaped screen 11 as a main body and a tubular shape, and one end portion of which is the filter body 10. It is provided with a synthetic resin suction pipe 20 communicated with the inside. The suction tube 20 is provided with a bellows portion 21 having a bellows shape that can be expanded and contracted and bent, and the bellows portion 21 is a resin layer 30 of a photocurable resin.
It is fixed in a predetermined shape by.

The fuel filter 1 (refers to the finished product) is
In-tank type electric fuel pump 40 shown in FIG.
Attached to. 2 (a) is a side view and FIG. 2 (b) is the same.
Is a bottom view. That is, the pump connection pipe portion 24 at the free end of the suction pipe 20 is fitted into the fuel inlet 41 on the bottom surface of the electric fuel pump 40, and the pipe portion 24 is provided.
The fuel filter 1 is attached to the electric fuel pump 40 by fixing the outer fixing piece 25 to a pump housing (reference numeral omitted) with, for example, screws 44. The electric fuel pump 40 is integrally provided with an electric motor such as a brushless motor or a DC motor and a pump portion driven by the motor portion, and is arranged in the fuel tank. The fuel is taken in through the fuel filter 1 and supplied to the engine from a fuel outlet 42 on the upper surface of the pump through a fuel supply pipe (not shown). An unillustrated power supply connector is electrically connected to the terminal 43 on the upper surface of the pump.

Next, the fuel filter 1 will be described in detail. As shown in FIG. 1, the filter body 10 is held in a swelled state by a frame (not shown) and has a suction pipe connecting pipe 12 which is integral with the frame. An annular protrusion 13 is formed on the outer circumference of the connection pipe 12. In addition, the suction pipe 2
A semi-finished product (denoted by reference numeral 1a) in which the bellows portion 21 of 0 is not fixed by the resin layer 30 is shown in FIG. Figure 3
(A) is a side view of a semi-finished product and (b) is a sectional view thereof. In FIG. 3, the suction pipe 20 is the bellows portion 21.
The main body connecting pipe portion 22 is continuous with one end portion thereof, and the pump connecting pipe portion 24 is continuous with the other end portion thereof. Body connection pipe part 22
An annular protrusion 23 is formed on the outer periphery of the. A fixing piece 25 having a fixing hole 24 projects from the outer surface of the pump connecting pipe portion 24. The main body connecting pipe portion 22 of the suction pipe 20 is the suction pipe connecting pipe 12 of the filter main body 10.
The semi-finished product 1a is obtained by being fitted to.

The bellows portion 21 of the suction pipe 20 in the semi-finished product 1a is shown in FIG.
By expanding and contracting and bending as shown by the chain double-dashed line in (a), the mounting angle, vertical position, horizontal position, etc. of the filter body 10 are changed to the specified shape. At this time, the horizontal position can be adjusted also by mutual sliding adjustment of the suction pipe connecting pipe 12 and the main body connecting pipe portion 22. Next, as shown in FIG. 1, a resin layer 30 of a photocurable resin is provided around the suction pipe 20 having the specified shape.
Is applied by spraying or spraying, and the resin layer 30 is irradiated with ultraviolet rays to be solidified, whereby the suction pipe 20 is fixed to the specified shape to obtain the finished product 1. At this time, the connecting portion between the suction pipe connecting pipe 12 and the main body connecting pipe portion 22 is also fixed by the resin layer 30, so that the fitting state of the connecting portion is prevented from changing due to vehicle vibration or the like. At this time, suction pipe connection pipe 1
By fixing the 2 and the annular projections 13 and 23 of the main body connecting pipe portion 22 with the resin layer 30, it is possible to favorably prevent the change in the fitted state as compared with the case where there is no such projection.

Therefore, according to the fuel filter 1, it is possible to meet the specification shape by expanding and bending the bellows portion 21 of the suction pipe 20 of the semi-finished product 1a, and fixing the specification shape with the resin layer 30 to the finished product. Therefore, the semi-finished product 1a can be used in common as a finished product regardless of various specifications, and the cost can be reduced. The resin layer 30 is not limited to the photocurable resin, and may be any synthetic resin that solidifies in a short time after application.

[0012]

EFFECTS OF THE INVENTION According to the present invention, it is possible to meet the specification shape by expanding and contracting the bellows portion of the intake pipe of the semi-finished product, and completing the specification shape by fixing the shape with a resin layer such as a photocurable resin. Since it is a product, it is possible to reduce costs by standardizing semi-finished products as finished products regardless of various specifications.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a fuel filter.

FIG. 2 is an explanatory view showing a mounting state of a fuel filter of a fuel pump.

FIG. 3 is an explanatory view showing a suction pipe of a semi-finished product of a fuel filter.

FIG. 4 is a partially cutaway side view showing a conventional example.

[Explanation of symbols]

 1 Fuel Filter 10 Filter Body 11 Bag-shaped Screen 20 Suction Pipe 21 Bellows Section 30 Resin Layer 40 Electric Fuel Pump 41 Fuel Inlet

Claims (1)

[Claims] Claim: What is claimed is: 1. A filter body mainly comprising a bag-shaped screen, a tubular body, one end of which communicates with the inside of the filter body and the other end of which communicates with a fuel inlet of an in-tank electric fuel pump. In a fuel filter including a suction pipe, the suction pipe is provided with a bellows-shaped bellows portion that can be expanded and contracted and bent, and the bellows portion is fixed in a predetermined shape by a resin layer such as a photocurable resin. .