公开(公告)号：US4531418A

公开(公告)日：1985-07-30

申请号：US532480

申请日：1983-09-15

申请人： Yasuie Takahasi ,  Shozi Haga

发明人： Yasuie Takahasi ,  Shozi Haga

IPC分类号： F16H3/14 ,  F16H3/38 ,  F16H59/02 ,  F16H61/08 ,  F16H61/16 ,  F16H61/18 ,  F16H61/24 ,  F16H63/00 ,  F16H63/20 ,  F16H63/30 ,  F16H63/32 ,  F16H63/36

CPC分类号： F16H3/385 ,  F16H63/20 ,  F16H63/302 ,  F16H61/24 ,  F16H63/3069 ,  F16H63/3408 ,  Y10T74/19284 ,  Y10T74/20018

摘要： A gear-shift mechanism for a transmission unit which includes a fork shaft slidably supported in a housing assembly which is selectively shifted from its neutral position to forward and reverse positions, a detent mechanism for selectively retaining the fork shaft in its neutral and shifted positions, a shift head member slidable on the fork shaft, a one-way engagement mechanism for effecting the engagement between the shift head member and the fork shaft during axial displacement of the fork shaft toward and away from its reverse position, and a shift arm member pivotably mounted to the inner wall structure of the housing assembly and linked with the shift head member to retain an idler gear in its neutral position and engage the same with driving and driven gears. The detent mechanism includes a holder member having a slot in its upper portion and a shaft fixed to the upper side portion of the holder member. The head portion of the shaft fixed to the holder member can be engaged with another head portion provided at a select return spring holder.

摘要翻译： 一种用于传动单元的换档机构，其包括可滑动地支撑在壳体组件中的叉轴，所述转轴被选择性地从其中立位置移动到前后位置;止动机构，用于选择性地将叉轴保持在其中立位置， 可在叉轴上滑动的换档头构件，用于在叉轴朝向和远离其倒档位置的轴向位移期间实现换挡头构件和叉轴之间的接合的单向接合机构，以及可枢转地转动的换档臂构件 安装到壳体组件的内壁结构并与换档头构件连接以将空转齿轮保持在其中立位置并将其与驱动齿轮和从动齿轮接合。 止动机构包括在其上部具有狭槽的保持器构件和固定到保持器构件的上侧部分的轴。 固定到保持器构件的轴的头部可以与设置在选择复位弹簧保持器处的另一头部接合。