| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission belt capable of suppressing turbulence of rotational transmission between pulleys and preventing noises caused by vibration from occurring. SOLUTION: A mold 5 is covered with a canvas jacket 4a and a core wire 3 is wound on the outside. In addition, an unvulcanized rubber sheet 6 is wound thereon and both end parts 7 thereof are piled up. Tapered parts 9a and 9b are formed in advance on the end parts 7 of the unvulcanized rubber sheet 6. The thickness of a lap part 8 made by piling up the both end parts 7 becomes approximately the same as the thickness of other sites. When this is covered with a shell bag and vulcanization molding is performed in a vulcanization oven, an amount of the unvulcanized rubber of the lap part 8 flowing in the width direction and in the peripheral direction is decreased. A positional shift of the wire 3 due to flow of the unvulcanized rubber hardly occurs. Turbulence of rotational transmission between a drive pulley and a driven pulley can be suppressed so that noises due to vibration of the transmission belt can be prevented. COPYRIGHT: (C)2004,JPO |
