Fuel tank

Abstract

Provided is a fuel tank made of metal reducing a fuel which cannot be sucked up and capable of lengthening life. The fuel tank 10 is provided with a tank body 20 made of metal; a pump unit 30; and a bead 61. The tank body 20 is provided with a tank upper 21 and tank lower 22. A tank side mounting part 29 of the tank body 20 is fastened to a vehicle body frame 11. The pump unit 30 is slide-expandably / contractably divided to a pump upper 31 and a pump lower 40. The pump upper 31 is penetrated through an upper upper wall 23a and is mounted. The pump lower 40 is urged to a downward direction by a coil spring 54 and a pump bottom part 40a is abutted on a lower lower wall 27. The bead 61 is molded in the projection shape in a plate thickness direction of the tank lower 22 and is penetrated through the neighborhood to the abutment part 27a and both ends are provided onto an edge of the lower lower wall 27 of the tank lower 22.

Description

technical field [0001] The present invention relates to a metal fuel tank connected by a flange portion to a body frame such as an automobile or the like. Background technique [0002] A fuel tank includes a metal tank (for example, refer to Patent Document 1). The case has a structure in which an upper case constituting an upper part and a lower case constituting a lower part are connected together by flanges. The fuel tank is mounted under the rear seat pan via the tank support handle. Usually, the pump assembly for pumping up the fuel in the metal tank is installed on the upper tank with the bottom separated from the lower wall of the lower tank. [0003] In addition, there is also disclosed a pump module (pump assembly), the bottom of which can abut against the lower wall of the box (see Patent Document 2). In Patent Document 2, the pump module is applied to a resin-made fuel tank. [0004] Patent Document 1: Japanese Publication No. 4-8021 [0005] Patent Document ...

AI Technical Summary

Problems solved by technology

However, if the bottom of the pump assembly is suspended, fuel that the pump assembly cannot draw up will remain in the tank

[0007] In addition, when the lower wall of the lower case abuts against the bottom of the pump unit, the lower wall of the lower case bends due to the repeated application of vibrations such as driving, so the lower wall of the lower case is separated from the bottom of the pump unit. The abutment starts to wear very easily

That is, when the pump assembly shown in Patent Document 2 is used on a lower tank with a thinner lower wall, the service life of the fuel tank will be shortened.

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