Closing system for a door of the fuel tank

Closing system comprising:

• a module having a tubular body with a duct suitable for communicating with a fuel tank of a vehicle,
• a door hinged to the body of the module with a hinge, in such manner to close the duct;
• and
• a lock mounted in the body of the module, outside the duct;
• wherein said lock comprises:
• a box comprising a shell and a lid,
• a closing pin suitable for fastening said door, said closing pin being mounted in translating mode in said box in such manner to slide along an axis to go from a retracted closing position to an extracted opening position,
• a spring that stresses the closing pin towards the extracted opening position,
• a cam obtained in said closing pin,
• a follower mounted in said shell and having a tip that acts in said cam of the closing pin in order to control the translation movement of the closing pin,
• a latch comprising a slide mounted in translating mode in the shell, and
• an actuator mounted in the shell;
• wherein
• the door provides for a pin that protrudes towards the duct of the module and has a truncated-conical head;
• the closing pin is suitable for fastening the pin of the door and comprises a cylindrical body with a plurality of elastic tabs that define a cylindrical housing suitable for receiving the head of the pin of the door;
• each elastic tab having an external tooth and an internal tooth;
• the follower is revolvingly mounted in the shell in such manner to rotate freely around an axis;
• the slide of the latch is mounted in translating mode in the shell in such manner to slide along an axis orthogonal to the sliding axis of the closing pin to go from a backward unlocking position to an advanced locking position wherein the latch engages and locks the closing pin,
• the actuator is suitable for actuating the latch, and
• the module has an opening and a shank disposed under the opening (120) and provided with a collar that protrudes inwards to stop against the elastic tabs of the locking pin when the locking pin is in retracted closing position;
• said lock also comprising an emergency mechanism that acts on said closing pin and on said latch;
• said emergency mechanism being manually actuated by the user to unlock the closing pin from the latch.