Seat frame

A seat frame comprising:

• a cushion frame constituting a framework of a seat cushion, the cushion frame including a pair of cushion side frames and a rear pipe connecting rear portions of the pair of cushion side frames;
• a back frame constituting a framework of a back seat cushion, the back frame including a pair of back side frames;
• a recliner plate fixed to a lower end of each back side frame;
• a bracket arranged to be in contact with a side surface of each cushion side frame;
• a nut fixed to the bracket;
• an end nut fixed to an end of the rear pipe;
• a bolt which can be screwed into the nut;
• and
• an end bolt which can be screwed into the end nut,
• the rear portion of each cushion side frame being provided with a bolt insertion hole through which the bolt is inserted and a pipe insertion hole through which the rear pipe is inserted,
• the recliner plate being provided with a bolt hole through which the bolt is inserted and an end bolt hole through which the end bolt is inserted,
• the bracket including
• a nut fixing portion to which the nut is fixed, and
• a pipe fixing portion for fixing the rear pipe with the rear pipe being inserted therethrough,
• the bolt being fixed to the nut in a state of being inserted through the bolt hole and the bolt insertion hole,
• the end bolt being fixed to the end nut in a state of being inserted through the end bolt hole.