| 摘要 |
PROBLEM TO BE SOLVED: To provide a webbing winding device which can increase a webbing winding amount at reducing operation time by a small number of part items. SOLUTION: Of a plurality of teeth in a sun gear 30, in a tooth groove between adjacent particular two teeth, an engaging plate 36 is formed. Of a plurality of teeth of a planet gear 46, in only one tooth 48, a tooth width is formed equal to thickness of the planet gear 46, a protrusion is formed. In a reducing condition, by elastic force of a spiral spring, the planet gear 46, while revolving in the clockwise direction, is rotated in the counter clockwise direction, the sun gear 30 is rotated in also the clockwise direction, a webbing is wound. The protrusion hits the engaging plate 36, when rotation of the planet gear 46 is stopped, the planet gear 46 revolves around by two turns, but the sun gear 30 is rotated about 6.86 turns, so as to increase a winding amount of the webbing. By eliminating necessity for arranging an intermediate material, a number of part items are prevented from increasing. |
