Seat frame for vehicle seat

A seat frame for a vehicle seat comprising:

• a side frame which is disposed at each end of a seat back frame of a seat back of the vehicle seat in a width direction of the vehicle seat;
• a reclining mechanism which comprises a rotation shaft extending in the width direction and pivots the seat back with respect to a seat cushion of the vehicle seat by the rotation of the rotation shaft;
• and
• an actuator which is driven to rotate the rotation shaft,
• wherein:
• the reclining mechanism is attached to a side wall of the side frame while the rotation shaft penetrates the side wall of the side frame,
• the actuator is fixed to an attachment bracket bonded to an inner surface of the side wall in the width direction while engaging with a portion of the rotation shaft penetrating the side wall of the side frame,
• the attachment bracket comprises:
• an upper portion which is disposed above an attachment area of the reclining mechanism in the side wall;
• and
• a lower portion which is disposed below the attachment area of the reclining mechanism in the side wall, and
• one end of the upper portion and one end of the lower portion in a front to back direction of the vehicle seat are connected to each other, and
• an other end of the upper portion and an other end of the lower portion in the front to back direction are separated from each other.