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    • 3. 发明公开
    • CHAIN TRANSMISSION DEVICE FOR DRIVING CAMSHAFTS
    • KETTENTRIEBVORRICHTUNG ZUR ANSTEUERUNG VON NOCKENWELLEN
    • EP3109511A1
    • 2016-12-28
    • EP15748587.1
    • 2015-02-03
    • NTN Corporation
    • KATO, AkioYAMASHITA, TakahiroHASEGAWA, Hisataka
    • F16H7/18
    • F16H7/08F01L1/022F01L1/047F16H7/06F16H7/18F16H2007/0863F16H2007/0872F16H2007/0893F16H2007/0897F16H2007/185
    • A chain transmission device for driving camshafts is provided, the device including a crank sprocket (2) mounted to a crankshaft (1), cam sprockets (4) mounted to the respective camshafts (3), a chain (5) including a loose side chain portion (5a), and trained around the crank sprocket (2) and the cam sprockets (4), and a chain guide (A 1 ) mounted on the outer side of the loose side chain portion (5a) so as to be pivotable about one of the two end portions of the chain guide (A 1 ), and provided with a plurality of rotatable rollers (23). An adjustment force is applied to the other of the two end portions of the chain guide (A 1 ) by a chain tensioner (11) such that the chain guide (A 1 ) is biased toward the chain, so that the rollers (23) of the chain guide (A 1 ) can guide the chain (5) by rolling. The winding angle of the portion of the chain (5) located on the outer periphery of the roller (23) located closest to the crank sprocket (2) is set to be 170 degrees or over so as to reduce noise.
    • 提供了一种用于驱动凸轮轴的链条传动装置,该装置包括安装在曲轴(1)上的曲柄链轮(2),安装在各凸轮轴(3)上的凸轮链轮(4),包括松动侧 链条部分(5a),并围绕曲柄链轮(2)和凸轮链轮(4)进行训练;以及链条引导件(A 1),其安装在松散侧链条部分(5a)的外侧上以便可枢转 在链条导向件(A 1)的两个端部中的一个周围,并且设置有多个可旋转辊(23)。 通过链条张紧器(11)将调节力施加到链条引导件(A 1)的两个端部中的另一个端部,使得链条引导件(A 1)朝向链条偏压,使得辊子(23) (A 1)可以通过滚动来引导链条(5)。 位于最靠近曲柄链轮(2)的辊(23)的外周上的链条(5)的部分的卷绕角被设定为170度以上,以便降低噪音。