Patent ID: 6869057

Claim:
A seat slide device comprising: a lower rail having a channel structure; an upper rail having a channel structure, the upper rail being slidably engaged with the lower rail in a manner to define therebetween an elongate enclosed space; an elongate lock plate placed in the elongate enclosed space and secured to the lower rail; a latch lever including a pawl portion and an input arm and placed in the elongate enclosed space, the latch lever being pivotally connected to the upper rail to pivot about a given axis that extends in parallel with the upper rail, the latch lever being pivotal between a lock position where the pawl portion is engaged with a part of the lock plate to establish a locked engagement between the lower and upper rails and an unlock position where the pawl portion is released from the lock plate to cancel the locked engagement, the latch lever being pivoted in a direction from the lock position to the unlock position when the input arm is applied with an external force; a spring member placed in the elongate enclosed space for biasing the latch lever to pivot toward the lock position; and an opening formed in the upper rail for having a given part of the input arm projected outward therethrough.