Machine element or mechanism – Gearing – Interchangeably locked
Patent
1987-09-18
1989-05-09
Braun, Leslie A.
Machine element or mechanism
Gearing
Interchangeably locked
74477, 192 363, F16H 308, G05G 510, G05G 900, G05G 1300
Patent
active
048277835
ABSTRACT:
In a key-shift transmission which comprises a shifting mechanism including a shifter fork (51) slidable on a fork shaft (50), an interlocking mechanism for preventing a shifting operation at the engaged condition of clutch (22) is provided by utilizing a latching mechanism disposed between the fork and fork shaft. In addition to a spring-biased latching ball (55) cooperating with a plurality of annular grooves (52N-52R) of the fork shaft for the latching purpose, a second ball (61) is provided which is received in the fork and is operative to interlock such fork in cooperation with the annular grooves. The fork shaft is supported rotatably and is operatively connected to a clutch-disengaging pedal (26) so that the shaft is rotated at the clutch-disengaged condition to an angular position where additional cut-out grooves (65) formed to the fork shaft unlock the fork.
In an aspect of the invention, the fork shaft is formed with second cut-out grooves (74) by which a clutch-disengaging operation may be omitted for a quick shifting purpose under a relatively shock-free condition.
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Okada Hideaki
Yamaoka Kojiro
Braun Leslie A.
Kanzaki Kokyukoki Mfg. Co. Ltd.
Macris Harold F.
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