Vehicle seat with movable cushion portion

A vehicle seat, comprising:

• a seat back portion;
• a cushion portion supported by a frame portion and provided to be movable in a forward and backward direction of a vehicle relative to the frame portion and the seat back portion;
• a supporting body included in the frame portion;
• a movable body included in the cushion portion and movable in the forward and backward direction of the vehicle relative to the supporting body;
• an upper guide wall provided at one of the supporting body and the movable body and extending in the forward and backward direction of the vehicle;
• a lower guide wall provided at a lower side of the upper guide wall and extending in the forward and backward direction of the vehicle;
• a sliding contact portion provided at the other one of the supporting body and the movable body and slidably movable relative to the upper and lower guide walls, the sliding contact portion including a main portion made of metal and a secondary portion which is more easily deformed elastically than the main portion;
• an entirety of the secondary portion is provided within a space defined between the upper and lower guide walls and interposed between the main portion and the upper and lower guide walls to an elastically deformed state;
• wherein the secondary portion includes a projecting slide portion fitted into a recessed portion formed at the main portion;
• wherein
• the main portion includes a fitted portion, a wall portion and a guide groove, the guide groove being between an end surface of the fitted portion and the wall portion, one of the upper and lower guide walls being positioned in the guide groove,
• the recessed portion of the main portion is formed at the end surface of the fitted portion so as to be continuous with the guide groove, and
• the projecting slide portion of the secondary portion is interposed between the fitted portion of the main portion and the one of the upper and lower guide walls when fitted into the recessed portion formed at the main portion.