| 摘要 |
A seat reclining apparatus includes a lower arm for mounting a seat cushion, a shaft having a first centric portion rotatably supported at the lower arm, an eccentric portion and a second centric portion of the shaft, an upper arm for mounting a seat-back, mounted on the eccentric portion of the shaft and having an inner gear, a locking arm mounted on the second centric portion of the shaft, engaged with the lower arm, and having an outer gear meshed with the inner gear of the upper arm, the number of teeth of the outer gear differing from that of the inner gear, a release device for releasing the engagement between the locking arm and the lower arm, a bushing secured to the lower arm and rotatably supporting the second centric portion of the shaft, a spiral spring mounted on the bushing and having an inner end connected thereto and an outer end connected to the locking arm for urging the locking arm in one direction, a handle connected to the shaft, and a braking device disposed between the bushing and the handle for restricting rotation of the shaft when the handle is not being manipulated, said braking device being released to permit rotation of the shaft when the handle is manipulated.
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