Seat adjustment apparatus for vehicle

A seat adjustment apparatus for a vehicle, comprising:

• a set bracket having a rear part to which a back frame is rotatably connected;
• and
• a cushion frame disposed on an upper side of the set bracket, and configured to be tilted by a link mechanism,
• wherein the link mechanism includes:
• a first link member hinge-engaged with a front part of the set bracket and connected to a driving unit, and configured to:
• support a front part of the cushion frame and make the front part of the cushion frame ascend and descend based on an operation of the driving unit;
• a second link member hinge-engaged with a rear part of the set bracket, and hinge-engaged with a middle part or a rear part of the cushion frame, the second link member configured to guide a movement of the rear part of the cushion frame;
• and
• a third link member hinge-engaged with the set bracket and the cushion frame and disposed between the first link member and the second link member, the third link member configured to determine a tilting position of the cushion frame when the cushion frame ascends,
• wherein:
• the first link member, the second link member and the third link member are arranged to be spaced apart from each other along a length direction of the set bracket,
• the set bracket is provided with a base bracket,
• the second link member has a first end hinge-engaged with a portion of the base bracket at a position higher than positions of the first link member and the third link member in the rear of the set bracket, and
• a second end hinge-engaged with the middle part or the rear part of the cushion frame and extending to be curved downward.