Slide rail device for vehicle
The slide rail device includes a lock release lever which switches a locking mechanism between a slide restriction state and a slide restriction release state by rotating in the vertical direction and includes a rail-incorporated portion positioned between an upper rail and a bottom wall of a lower rail, a rotational contact portion which is formed on an upper surface of the rail-incorporated portion and contacts a roof surface of the upper rail, and a biaser which is installed in the rail-incorporated portion and the upper rail and biases the rotational contact portion toward the roof surface.
1. A slide rail device for a vehicle comprising:
a lower rail which extends in a forward/rearward direction;
an upper rail which is supported by said lower rail to be slidable in said forward/rearward direction;
a locking mechanism which is provided between said upper rail and said lower rail and restricts or releases a restriction on sliding of said upper rail;
a lock release lever which switches said locking mechanism between a slide restriction state and a slide restriction release state by rotating in a vertical direction and includes a rail-incorporated portion positioned between said upper rail and a bottom wall of said lower rail;
a rotational contact portion which is formed on an upper surface of said rail-incorporated portion, contacts a roof surface of said upper rail and rotatably supports said lock release lever; and
a biaser which is installed in said rail-incorporated portion and said upper rail, said biaser biasing said rotational contact portion toward said roof surface.
2. The slide rail device for a vehicle according to claim 1 , wherein said rotational contact portion comprises a protrusion which protrudes upward.
3. The slide rail device for a vehicle according to claim 1 , wherein said locking mechanism comprises:
a plurality of lock grooves which are formed in said lower rail and aligned in said forward/rearward direction; and
a lock portion which is engaged in any one of said lock grooves when said lock release lever is in a lock position and escapes from said lock groove when said lock release lever is in an unlock position.
4. The slide rail device for a vehicle according to claim 3 , wherein said biaser comprises a lock spring including said lock portion.
5. The slide rail device for a vehicle according to claim 1 , wherein said biaser comprises a torsion spring, wherein said torsion spring prevents said lock release lever from moving forward and rearward relative to said upper rail.
6. The slide rail device for a vehicle according to claim 5 , wherein said torsion spring comprises a lock portion which is engaged in any one of a plurality of lock grooves formed in said lower rail to be aligned in said forward/rearward direction when said lock release lever is positioned in a lock position, and said lock portions which escapes from said lock groove when said lock release lever is positioned in an unlock position, and
wherein said lock release lever includes a first engaging portion which is engaged with said torsion spring at a portion in the vicinity of said lock portion and a second engaging portion which is engaged with said torsion spring at a portion thereof which deviates from said first engaging portion in said forward/rearward direction.
7. The slide rail device for vehicle according to claim 1 , wherein a portion of said rail-incorporated portion is formed as a narrow-width portion which is smaller in width than the surrounding portion of said rail-incorporated portion, and
wherein at least part of said biaser is positioned in a space formed between said upper rail and both sides of said narrow-width portion.