Fuel filler door module

[0027] Figure 1 to 3 The fuel tank cap module 1 shown in is configured as a two-component type and faces figure 2 The outer side of the vehicle located in the upper part has a tank part 2 and in the lower part, that is, in the installed state, it has a bottom section 3 pointing towards the inner side of the vehicle. The transition area between the bottom section 3 and the tank part 2 can be image 3 It is clearly seen in the cross section. In this transition zone, the pot-shaped part 2 is injection-molded on the inside and outside by the bottom section 3.

[0028] Both the pot part 2 and the bottom section or bottom guard plate 3 can be manufactured by injection molding. The tank part 2 has a relatively hard and inelastic plastic material, such as polypropylene, and the bottom section 3 is provided with a relatively soft and elastically deformable plastic material, preferably EPDM (ethylene propylene diene monomer). The outer tank part 2 and the bottom section 3 together form the tank body 1 of the fuel tank cover module. In addition, the tank 1 can be image 3 The fuel tank cover 8 which is shown in cross section and is supported in a reversible manner is closed to the outside.

[0029] In order to accommodate the fuel injection pipe joint not shown in detail in the drawings, the bottom section 3 is provided with a through hole 4 which is circular in this embodiment. According to figure 2 with image 3 As shown, the through hole has a bellows-shaped arch 5 in its edge region 6, which makes the bottom section 3 easier to elastically deform for installation purposes.

[0030] The edge area 6 where the bottom section 3 adjoins the through hole 4 has a friction-reducing surface structure 7 toward the fuel injection pipe joint, which is preferably designed as pitting pits or surface roughening of the plastic material in this area. In particular, it is provided here that at least the edge area 6 of the bottom section 3 is provided with a friction-reducing surface structure that lies against the fuel injection pipe connection. It can also be provided that the entire bottom section 3 is provided with surface roughness or pitting pits according to the invention on the inside and outside.

[0031] By reducing the static friction and/or sliding friction of the surface structure 7, the entire installation process, especially the fitting of the bottom section 3 on the fuel injection pipe joint that has been fixed in the final installation position, can be made easier and simplified. The use of additional lubricants or lubricating oil can be omitted in an advantageous way.