Vehicle door closer device

A vehicle door closer device comprising:

• a latch unit comprising a latch that is capable of moving from a half-latch position to a full-latch position and a ratchet that is capable of engaging with the latch in the half-latch position or full-latch position;
• a motor;
• and
• a closer-release unit comprising a planetary gear mechanism, the planetary gear mechanism comprising
• a pivot shaft,
• a sun gear pivoted via the pivot shaft, the sun gear being capable of turning in a first direction from a sun-gear neutral position and incapable of turning in a second direction opposite the first direction from the sun-gear neutral position,
• a planetary gear which meshes with the sun gear and revolves around the sun gear while the planetary gear rotates on its own axis,
• a closing lever pivoted via the pivot shaft and pivoting the planetary gear and
• a ring gear pivoted via the pivot shaft and having internal teeth meshing with the planetary gear in an inner circumference of the ring gear, the ring gear being capable of turning in a closing direction equal to the first direction of the sun gear and in a releasing direction opposite the closing direction,
• the planetary gear revolving around the sun gear while the planetary gear rotates on its own axis when the ring gear turns in the closing direction, the closing lever turning in the closing direction by the orbiting of the planetary gear to turn the latch from the half-latch position to the full-latch position,
• the planetary gear turning on its own axis when the ring gear turns in the releasing direction, the sun gear turning in one direction by turning the planetary gear on its own axis to release the ratchet from the latch.