Seat reclining device for a vehicle
AssigneeAisin Seiki Kabushiki Kaisha
InventorsYuichi Kondo, Tadasu Yoshida, Yukifumi Yamada
Life of this patent
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Abstract
A seat reclining device for a vehicle includes a lower arm adapted to be fixedly arranged on a seat cushion member, an upper arm rotatably arranged with respect to the lower arm and adapted to be fixed on a seat back member, and a locking mechanism for locking the upper arm relative to the lower arm. The locking mechanism includes a rotatable cam and a spring. The spring is disposed between the lower arm and the cam to apply a biasing force to the cam. The spring is disposed so as to be wound around the rotational axis of the cam.
Claims20
A seat reclining device for a vehicle comprising:
- a lower arm adapted to be fixedly arranged on a seat cushion member,
- an upper arm adapted to be fixed on a seat back member and rotatably arranged with respect to said lower arm,
- a locking mechanism for locking the upper arm relative to the lower arm, the locking mechanism including a rotatable cam, and
- a spring accommodated in a space between said lower arm and said upper arm, said spring being disposed between said lower arm and said cam and having a portion positioned in a groove in the cam to apply a biasing force to the cam, said cam having a rotational axis and said spring being disposed so as to be wound around the rotational axis of the cam.
A seat reclining device for a vehicle comprising:
- a lower arm adapted to be fixedly arranged on a seat cushion member,
- an upper arm adapted to be fixed on a seat back member, said upper arm being rotatable relative to the lower arm,
- a locking mechanism for locking the upper arm relative to the lower arm, the locking mechanism including a rotatable cam that is rotatable about a rotational axis of the cam,
- the cam having a boss portion and being spring biased by only a single spiral spring which is wound around the boss portion and applies a biasing force to the cam causing the cam to rotate about said rotational axis in a direction locking the upper arm relative to the lower arm, and
- the spring being accommodated in a space between the upper and lower arms.
A seat reclining device for a vehicle comprising:
- a lower arm adapted to be fixedly arranged on a seat cushion member,
- an upper arm adapted to be fixed on a seat back member, one of the upper arm and lower arm being rotatable relative to the other of the upper arm and lower arm,
- a locking mechanism for locking one of the upper arm and lower arm relative to the other of the upper arm and lower arm, the locking mechanism including a rotatable cam that is spring biased by a spiral spring which applies a biasing force to the cam causing the cam to rotate in a direction causing the locking mechanism to effect locking of the upper arm and lower arm relative to one another,
- the spiral spring being accommodated in a space between said lower arm and said upper arm, and
- said spring including an inner end which engages a portion of the cam and an outer end which engages one of the upper and lower arms.
Dependencies are inferred from the claim text.