| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronizer ring capable of preventing jumping-out of a synchronizer key, and increasing strength around key grooves.SOLUTION: In a synchronizer ring 5, an end portion at a side of transmission gears 2, 3 of an outer peripheral face 22 is provided with a flange portion 24 projecting to the circumference, and a plurality of teeth 26 projecting to a radial outer side, are arranged at intervals in the circumferential direction. A plurality of key grooves 27 are formed on an outer peripheral face 22 at intervals in the circumferential direction. The key grooves 27 have the shape recessed to the outer peripheral face 22, and cut from an end face 28 at a side opposite to a transmission gear side, to a position having a specific interval with respect to the flange portion 24, and have bottoms 29 at an inner peripheral face 21 side. A thickened portion 30 raised to the outer peripheral face 22 and having a width larger than the interval of the teeth 26 in the circumferential direction, is locally formed between the flange portion 24 and the key grooves 27. |
