초록 ▼

A cone clutch sleeve (18) on a main shaft (15) is moved axially between forward and reverse counter-rotating gears (13 and 14) by a yoke (102) having mirror-image oppositely tapered cams (108 and 109) on opposite sides thereof which are selectively rotatable to engage eccentric rings (132 and 133) o

A cone clutch sleeve (18) on a main shaft (15) is moved axially between forward and reverse counter-rotating gears (13 and 14) by a yoke (102) having mirror-image oppositely tapered cams (108 and 109) on opposite sides thereof which are selectively rotatable to engage eccentric rings (132 and 133) on the forward and reverse gears. This engagement drives the yoke away from the one engaged gear and toward the other gear to in turn drive the clutch sleeve out of engagement with the one gear such that torque applied through the cam-engaged gear ring assists clutch disengagement of the one gear such that requisite shift force decreases as speed and torque increases. The eccentric face surface of each ring actuates the yoke and drives the sleeve member out of engagement with the one gear and into engagement with the other gear with a pulsed impact hammer effect due to the eccentricity of the face surface as it rotates in a circumferential plane about the main shaft.

대표청구항 ▼

A shift mechanism and clutch apparatus comprising: a main axial shaft; reverse gear means freely rotatable about said main shaft, said reverse gear means having a clutch face on one side; forward gear means freely rotatable about said main shaft, said forward gear means having a clutch face on one s

A shift mechanism and clutch apparatus comprising: a main axial shaft; reverse gear means freely rotatable about said main shaft, said reverse gear means having a clutch face on one side; forward gear means freely rotatable about said main shaft, said forward gear means having a clutch face on one side, with said clutch faces facing each other; a drive gear meshed with said reverse and forward gear means for driving said reverse and forward gear means in respectively opposite directions of rota- tion; a sleeve member mounted on said main shaft between said reverse and forward gear means, said sleeve member having a clutch face at each end, each clutch face selectively engageable with one of said clutch faces of said reverse and forward gear means, and an exterior circumferential groove in said sleeve member between said clutch faces; yoke means for engaging said groove and moving said sleeve member axially; cam means operatively associated with said yoke means; and actuating means for actuating said cam means into engagement with one of said gear means to actuate said yoke means and drive said sleeve member out of engagement with said one gear means and into engagement with the other of said gear means.