| 摘要 |
A seat reclining apparatus includes a support frame tiltable about a support axis relative to a first frame, an angle adjustment unit causing a second frame to tiltably move forward or rearward relative to the support frame by a driving force of an actuator, the second frame being displaced in a direction to approach and separate from the support axis, a lock mechanism selectively operated to an unlocked state and a locked state, and a front stopper provided at the first frame to specify a forward tilt limit of the seat back by making contact with a forward tilt contact portion provided at the second frame in a state where the lock mechanism is in the unlocked state, the front stopper including a linearly-shaped contact surface that makes contact with the forward tilt contact portion and that matches or approximates a virtual straight line passing through the support axis.
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