Lid lock for refueling or charging port

A lid lock for a refueling or charging port, comprising:

• a lifting shaft having a head for mounting a refueling or charging port lid, the lifting shaft being provided with lifting screw teeth on an outer wall thereof;
• a worm wheel, the worm wheel being provided with inner screw teeth and an outer gear, the worm wheel being rotatably sleeved on the outside of the lifting shaft, the inner screw teeth of the worm wheel being meshed with the lifting screw teeth of the lifting shaft;
• a limiting sleeve configured to limit the movement of the worm wheel in an axial direction
• a worm shaft, the worm shaft being provided with helical teeth on the outside thereof, the helical teeth being meshed with the outer gear of the worm wheel, the worm shaft being rotatable in a first direction and a second direction opposite to the first direction;
• and
• a trajectory sleeve connected to a tail portion of the lifting shaft, the trajectory sleeve being provided with a trajectory control slot on an outer wall thereof;
• wherein the worm wheel and the worm shaft are configured such that the worm shaft rotates in the first direction to drive the worm wheel to rotate, thereby driving the lifting shaft to perform a descending movement along an axial direction of the lifting shaft and then perform a rotational movement to expose the refueling or charging port for fuel or electricity supply;
• or the worm shaft rotates in the second direction to drive the worm wheel to rotate, thereby driving the lifting shaft to perform a rotational movement and then perform an ascending movement along the axial direction of the lifting shaft to close the refueling or charging port;
• wherein the limiting sleeve is provided with a positioning pin on an inner wall thereof;
• and
• wherein the positioning pin and the trajectory control slot are configured to cooperate with each other to control the trajectory of the ascending, descending and rotational movements of the lifting shaft.

A lid lock for a port, the lid lock comprising:

• a lifting shaft having a head configured for mounting a port lid, the lifting shaft including lifting screw threads formed on an outer surface thereof;
• a worm wheel comprising internal threads and an external gear, the worm wheel being rotatably sleeved over the lifting shaft such that the internal threads of the worm wheel engage with the lifting screw threads of the lifting shaft;
• a limiting sleeve having an inner wall having a top portion, wherein the top portion of the inner wall of the limiting sleeve and a bottom portion of the worm wheel have complementary stepped portions, the limiting sleeve being configured to support the worm wheel and restrict its downward movement;
• and
• a worm shaft having helical teeth on an outer surface, the helical teeth being meshed with the external gear of the worm wheel, the worm shaft being rotatable in a first direction and a second, opposite direction.