Seat for vehicle

A seat for a vehicle, comprising:

• a pair of seat rails coupled to the vehicle and spaced apart from each other in a left-right direction;
• a left slider and a right slider that are disposed on the pair of seat rails, respectively, and that are configured to move back and forth along the pair of seat rails;
• a left side frame and a right side frame that are connected to each other, wherein positions of the left and right side frames are configured to change with respect to the left and right sliders, respectively;
• a first link unit comprising a plurality of first links that connect one of the left slider or the right slider to one of the left side frame or the right side frame, respectively, the first link unit being disposed at one of a front side or a rear side of the seat in a front-rear direction;
• a second link unit comprising a plurality of second links that connect the other of the left slider or the right slider to the other of the left side frame or the right side frame, respectively, the second link unit being disposed at the other of the front side or the rear side of the seat in the front-rear direction;
• an interlocking link that connects the first link unit to the second link unit;
• and
• at least one cross bar that connects the left and right side frames to each other,
• wherein the plurality of first links comprise a first link and a second link, and
• wherein the plurality of second links comprise a third link and a fourth link.

A seat for a vehicle, comprising:

• a pair of seat rails coupled to the vehicle and spaced apart from each other in a left-right direction;
• a left slider and a right slider configured to move back and forth along the pair of seat rails, respectively;
• a left side frame and a right side frame that are connected to each other, wherein positions of the left and right side frames are configured to change with respect to the left and right sliders, respectively;
• a first link unit comprising a first link and a second link that connect one of the left slider or the right slider to one of the left side frame or the right side frame, respectively, the first link unit being disposed at one of a front side or a rear side of the seat in a front-rear direction;
• a second link unit comprising a third link and a fourth link that connect the other of the left slider or the right slider to the other of the left side frame or the right side frame, the second link unit being disposed at the other of the front side or the rear side of the seat in the front-rear direction;
• and
• an interlocking link that connects the second link and the fourth link to each other,
• wherein one of the left slider or the right slider, the second link, the first link, one of the left side frame or the right side frame, the third link, the fourth link, and the interlocking link are hinged to one another and define a seven-bar linkage mechanism.