| 摘要 |
An inner barrel is slidably inserted into an outer barrel, chuck pieces which hold a stick-shaped material is provided at a tip end portion of the inner barrel, a chuck ring is inserted between the chuck pieces and the outer barrel, an elastic member receiving part is provided at part of an inner peripheral surface in a circumferential direction of the outer barrel, an elastic member receiving part is provided at part of an outer peripheral surface in the circumferential direction of the inner barrel, and a coil spring is placed at part in a circumferential direction of the outer barrel and the inner barrel between the elastic member receiving part and the elastic member receiving part, and urges the inner barrel with respect to the outer barrel.
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