Driving mechanism for door lock, and door lock

A door lock comprising a cylinder plug and a driving mechanism, wherein the driving mechanism comprises:

• a motor;
• a planetary gear assembly comprising a ring gear, a planet gear, and a sun gear, wherein the motor is rotatably connected to the ring gear, the planet gear is rotatably connected to the ring gear, and the planet gear is also rotatably connected to the sun gear;
• and
• a cage connected to the planet gear;
• wherein when the sun gear is in a fixed state, the ring gear is driven by the motor to rotate, to make the planet gear rotate relative to the sun gear, to drive the cage to rotate;
• or when the ring gear is in a fixed state, the sun gear, the planet gear, and the cage are configured to cooperate with one another, to make the planet gear rotate relative to the sun gear and the cage rotate, wherein
• when the ring gear is in the fixed state, the sun gear is controlled to rotate, to make the planet gear rotate relative to the ring gear, to drive the cage to rotate;
• the driving mechanism further comprises a bracket assembly, wherein the bracket assembly comprises a bracket, a second bracket, and first elastic members, the sun gear is connected to one side of the first bracket, a buffer groove is defined at the other side of the first bracket, and first protrusions protrude from a sidewall of the buffer groove;
• second protrusions protrude from a periphery of the second bracket, the second protrusions are disposed in the buffer groove, and the second bracket has a fixed state or a rotating state;
• and
• the first elastic members are disposed in the buffer groove, and each of the first elastic members elastically abuts between one first protrusion and one second protrusion adjacent to the first protrusion;
• and
• the cylinder plug is connected to the driving mechanism, and the cylinder plug is driven by the driving mechanism to move to open or close a door.

A driving mechanism for a door lock, comprising:

• a motor;
• a planetary gear assembly comprising a ring gear, a planet gear, and a sun gear, wherein the motor is rotatably connected to the ring gear, the planet gear is rotatably connected to the ring gear, and the planet gear is further rotatably connected to the sun gear;
• and
• a cage connected to the planet gear;
• wherein when the sun gear is in a fixed state, the ring gear is driven by the motor to rotate, to make the planet gear rotate relative to the sun gear, to drive the cage to rotate;
• or when the ring gear is in a fixed state, the sun gear, the planet gear, and the cage are configured to cooperate with one another, to make the planet gear rotate relative to the sun gear and the cage rotate;
• wherein
• when the ring gear is in the fixed state, the cage is directly controlled to rotate to drive the planet gear to rotate and the sun gear to rotate, and make the planet gear rotate relative to the ring gear;
• the driving mechanism further comprises a bracket assembly, wherein the bracket assembly comprises a first bracket, a second bracket, and first elastic members, the sun gear is connected to one side of the first bracket, a buffer groove is defined at the other side of the first bracket, and first protrusions protrude from a sidewall of the buffer groove;
• second protrusions protrude from a periphery of the second bracket, and the second protrusion are disposed in the buffer groove;
• and
• the first elastic members are disposed in the buffer groove, and each of the first elastic members elastically abuts between one first protrusion and one second protrusion adjacent to the first protrusion.