Abstract: A fitting structure for attaching a fuel pump in a fuel tank, which includes a gasket surrounding a pump insertion hole of the fuel tank. The gasket is collapsed by a presser ring through a flange portion of the fuel pump, thus enabling the gasket to provide an effective seal between the fuel pump and the fuel tank. A nut fastened onto a bolt is used to bring a second valley portion of the presser ring into close contact with a first mount portion of a fixed side ring that has been preliminarily welded to the fuel tank, thus securely fitting the fuel pump to the fuel tank. As compared with a conventional fitting structure using a bayonet or snap fit connection, wherein the fitting structure must be turned against the gasket to be fitted into a secure position, this new fitting structure presses the gasket into place, thus avoiding the turning motion and the resulting damage that may be caused to the gasket.

Abstract: A fitting structure for attaching a fuel pump in a fuel tank, which includes a gasket surrounding a pump insertion hole of the fuel tank. The gasket is collapsed by a presser ring through a flange portion of the fuel pump, thus enabling the gasket to provide an effective seal between the fuel pump and the fuel tank. A nut fastened onto a bolt is used to bring a second valley portion of the presser ring into close contact with a first mount portion of a fixed side ring that has been preliminarily welded to the fuel tank, thus securely fitting the fuel pump to the fuel tank. As compared with a conventional fitting structure using a bayonet or snap fit connection, wherein the fitting structure must be turned against the gasket to be fitted into a secure position, this new fitting structure presses the gasket into place, thus avoiding the turning motion and the resulting damage that may be caused to the gasket.