公开(公告)号：US4057264A

公开(公告)日：1977-11-08

申请号：US599122

申请日：1975-07-25

申请人： Kensei Suzuki ,  Takashi Sanada ,  Kenzo Okazima

发明人： Kensei Suzuki ,  Takashi Sanada ,  Kenzo Okazima

IPC分类号： B62K25/08

CPC分类号： B62K25/08

摘要： A front fork for suspending a front wheel of a motorcycle has an outer tube and an inner tube slidably accomodated therein. A pressure chamber is defined between the inner tube and a hollow rod and communicates with a lower chamber formed in the outer tube through a port formed in the inner tube, an anular recess formed in the inner tube, another port formed in the inner tube at the lower portion thereof and a selected one of a plurality of orifices of different diameters formed in a lock piston located in the inner tube. The lock piston is provided with an engaging member engageable with a bottom wall of the outer tube when the inner tube is caused to intrude into the outer tube by a maximum amount. The degree of fluid communication between the port of the inner tube and each of the orifices formed in the lock piston can be varied by rotating the inner tube and outer tube relative to each other while the engaging member is held in engagement with the bottom wall of the outer tube, whereby a damping effect is adjusted and air is prevented from mixing with working oil while production of unusual sounds due to lack of working oil sucked into the lower chamber is prevented.

摘要翻译： 用于悬挂摩托车前轮的前叉具有可滑动地容纳在其中的外管和内管。 压力室被限定在内管和中空杆之间，并且通过形成在内管中的端口与形成在外管中的下腔室连通，形成在内管中的腔室，形成在内管中的另一端口 其下部和形成在位于内管中的锁定活塞中的多个不同直径的孔中的选定的一个孔。 锁定活塞设置有当内管以最大量侵入外管时与外管的底壁接合的接合构件。 内管端口与形成在锁定活塞中的每个孔之间的流体连通程度可以通过使内管和外管相对于彼此旋转而变化，同时接合构件保持与底壁相接合 外管，由此防止了阻尼效果，防止空气与工作油混合，同时防止由于缺少吸入下腔室的工作油产生异常声音。