| 摘要 |
PROBLEM TO BE SOLVED: To provide a looseness preventive structure of a seat back of an internal gear type of seat reclining device. SOLUTION: The internal gear type of seat reclining device has a tooth member 11 and guide parts 13, 13 which sandwich, guide and move the tooth member 11. The tooth member 11 has sides parallel to the guide parts 13, 13. At least one of a pair of the guide parts 13, 13 has closely contacting parts 49, 50 which protrude from the other surface of a guide groove 12 to the side of the tooth member 11. The closely contacting parts 49, 50 are at least at the end of the guide groove 12, that is, on the side of a tooth part 7 engaging with a tooth part 10. COPYRIGHT: (C)2005,JPO&NCIPI
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