Patent ID: 8757577

Claim:
A slide rail device for a vehicle comprising: a lower rail which extends in a forward/rearward direction and is provided with lock grooves which extend in an upward/downward direction and are open at one end thereof; an upper rail which is supported by said lower rail to be slidable in said forward/rearward direction; a lock release lever which is provided with a rail-incorporated portion positioned between said upper rail and a bottom wall of said lower rail, and supported by said upper rail to be upwardly/downwardly rotatable between a locked position and an unlocked position; forward/rearward-movement restricting grooves which are formed on said upper rail, said forward/rearward-movement restricting grooves extending in the upward/downward direction and are open at the same end as that of said lock grooves; lock portions which are formed on a member which moves together with said lock release lever, which are movable in at least one of the forward direction and the rearward direction relative to said upper rail, wherein said lock portions are lock-engaged with said lock grooves and said forward/rearward-movement restricting grooves when said lock release lever is positioned at said locked position, and wherein said lock portions are released from said lock grooves and said forward/rearward-movement restricting grooves when said lock release lever is positioned at said unlocked position; and restricting lugs which are formed on said upper rail and are positioned so that said forward/rearward-movement restricting grooves are interposed between said restricting lugs in the longitudinal direction of said upper rail, said restricting lugs protruding beyond the open ends of said forward/rearward-movement restricting grooves in a direction from closed ends of said forward/rearward-movement restricting grooves, so that said forward/rearward-moveable range of the lock portions is mechanically restricted by said restricting lugs when said lock release lever is positioned in said unlocked position.