Patent ID: 9038981
Filing Date: 2015-05-26
Classification: B60N

Abstract:
1. A seat slide apparatus for a vehicle, comprising: a first rail including first and second flanges arranged side by side in a width direction of the first rail, each of the first and second flanges including a plurality of locking protrusions at an end portion; a second rail connected to the first rail to be relatively movable to the first rail, the second rail including first and second inner flanges arranged side by side in the width direction at an inner side of the first and second flanges of the first rail in the width direction, the second rail including first and second outer flanges that are arranged to be extended outwardly from respective ends of the first and second inner flanges in the width direction to separate from each other and are arranged to be folded back at an outer side of the first and second flanges of the first rail in the width direction, the first and second inner flanges including inner opening portions respectively, the first and second outer flanges including outer opening portions respectively, the inner opening portions and the outer opening portions being connected to one another in the width direction; a lock member connected to the second rail to be rotatable about an axis line that extends in the width direction at an inner side of the first and second inner flanges in the width direction, the lock member including a flat plate portion that passes through the inner opening portions and the outer opening portions in the width direction and that includes lock portions with which the locking protrusions are engageable, the lock portions being formed at opposing ends of the flat plate portion in the width direction, the lock member selectively restricting a relative movement between the first rail and the second rail by engagement and disengagement between the lock portions and the corresponding locking protrusions in association with the rotation of the lock member; a biasing member biasing the lock member to rotate in a direction to restrict the relative movement between the first rail and the second rail, the lock member being rotatably connected to the second rail in a state where a support shaft fixed to one of the second rail and the lock member and including the axis line that extends in the width direction is inserted to be positioned within an elongated hole formed at the other of the second rail and the lock member to be movable in first and second directions of the relative movement between the first rail and the second rail and is biased by a support shaft biasing member in a direction orthogonal to the first and second directions of the relative movement between the first rail and the second rail; and a restriction portion restricting the support shaft from moving within the elongated hole in the first and second directions of the relative movement between the first rail and the second rail in a case where a load applied in one of the first and second directions of the relative movement between the first rail and the second rail is smaller than a predetermined value.