PROBLEM TO BE SOLVED: To provide a V-belt continuously variable transmission for straddle-type vehicles capable of maintaining high support strength of a motor unit by improving rigidity of a motor unit support portion of a transmission case cover, and inhibiting the motor unit from protruding outward in a vehicle width direction.SOLUTION: The V-belt continuously variable transmission for straddle-type vehicles includes a motor unit (100) for adjusting a groove width of a drive pulley (61), attached to a transmission case cover (80) from outside so that at least part of the motor unit (100) is arranged in a belt gear change chamber (68) formed inside of a transmission case (23) and the transmission case cover (80) covering the transmission case (23) from outside in a vehicle width direction. The V-belt continuously variable transmission for straddle-type vehicles includes a curved concave portion (82C) having a curved surface projecting toward the belt gear change chamber (68), formed on the transmission case cover (80), and the motor unit (100) is attached to a curved bottom of the curved concave portion (82C).
【課題】伝動ケースカバーのモータユニット支持部の剛性を高めモータユニットの支持強度を高く維持するとともにモータユニットの車幅方向外側への突出を抑制することができる鞍乗型車両のVベルト式無段変速機を供する。【解決手段】伝動ケース(23)と同伝動ケース(23)を車幅方向外側から覆う伝動ケースカバー(80)とで内部に形成されるベルト変速室(68)内に、モータユニット(100)の少なくとも一部が配置されるように、駆動プーリ(61)の溝幅を調節するモータユニット(100)が伝動ケースカバー(80)に外部から取り付けられる鞍乗型車両のVベルト式無段変速機において、伝動ケースカバー(80)には、ベルト変速室(68)側へ膨出する曲面を有する湾曲凹部(82C)が形成され、湾曲凹部(82C)の湾曲底部にモータユニット(100)が取り付けられる鞍乗型車両のVベルト式無段変速機。【選択図】図8
V-BELT CONTINUOUSLY VARIABLE TRANSMISSION FOR STRADDLE-TYPE VEHICLE
鞍乗型車両のVベルト式無段変速機
2015-09-03
Patent
Electronic Resource
Japanese
V-BELT CONTINUOUSLY VARIABLE TRANSMISSION SYSTEM FOR STRADDLE TYPE VEHICLE
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