公开(公告)号：US20130091984A1

公开(公告)日：2013-04-18

申请号：US13649864

申请日：2012-10-11

Applicant: C.R.F. SOCIETA' CONSORTILE PER AZIONI

Inventor： Fabio PESOLA ,  Gianluigi PREGNOLATO ,  Andrea PIAZZA ,  Marco GARABELLO ,  Valter PASTORELLO

IPC: F16H37/06

CPC classification number: F16H37/065 ,  B60K6/36 ,  B60K6/48 ,  F16H3/006 ,  F16H63/18 ,  F16H2200/0047 ,  F16H2200/0052 ,  Y02T10/6221 ,  Y10T74/19014 ,  Y10T74/19051

Abstract: A transmission includes a first primary shaft carrying driving gearwheels for odd gears and reverse, a coaxial second primary shaft carrying driving gearwheels for the even gears, and a secondary shaft carrying idle driven gearwheels meshing with the driving gearwheels. The gearbox has a gear shift device having sliding engagement sleeves each arranged to connect a driven gearwheel corresponding to a given gear for rotation with a secondary shaft. Corresponding sliding shift forks cause an engagement sleeve to slide between a neutral and shift positions. A rotary drum has grooves on its cylindrical surface in which a stud slides, and is connected for translation with a respective shift fork in its sliding direction. An actuation unit rotates the drum stepwise among angular positions corresponding to engagement sleeves' predetermined positions. In a first angular position the engagement sleeves simultaneously engage gear reverse.

Abstract translation: 变速器包括：第一主轴，承载用于奇数档和倒档的主动齿轮;承载用于偶齿轮的主动齿轮的同轴第二主轴;以及承载与驱动齿轮啮合的空转从动齿轮的副轴。 齿轮箱具有一个具有滑动接合套筒的换档装置，每个齿轮装置被配置成将对应于给定齿轮的从动齿轮与副轴相连接。 相应的滑动移位叉使得接合套筒在空档和换档位置之间滑动。 旋转鼓在其圆柱形表面上具有凹槽，螺柱在其中滑动，并且在其滑动方向上与相应的换档拨叉连接以平移。 致动单元在对应于接合套筒的预定位置的角位置之间逐步旋转滚筒。 在第一角度位置，接合套筒同时啮合齿轮反向。