Pin-type synchronizer

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 23/06 (2006.01) F16H 3/12 (2006.01)

Patent

CA 2242151

A pin-type, double-acting synchronizer mechanism (20) with friction members (30,40 and 32, 42), jaw members (34, 50 and 36, 52), three circumferentially spaced pins (44) including blocker shoulders for preventing asynchronous engagement of the jaw clutches, and pre-energizer assemblies (48) to ensure initial engagement of the friction rings and blocker shoulders in response to initial engaging movement of a shift flange (46), and self-energizing ramps (24d, 24e, 26d, 26e) defined by posts (24c, 26c)projecting from a hub (22) and self-energizing ramps (54b, 54c, 54d, 54e) defined by a ring integrally formed with the flange and two of the jaw members. The self-energizing ramps remain engaged when the jaw clutches are engaged to assist keeping the jawclutches engaged. A modified synchronizer 120 includes springs 155 to control/limit the additive force provided by the self-energizing ramps.

La présente invention a pour objet un synchroniseur (20) à double action comportant des ergots (30, 40, 32 et 42), des crabots (34, 50, 36 et 52), ainsi que trois griffes (44) disposée en espacement à la circonférence du dispositif, et comportant des épaulements destinés à prévenir les mises en prise asynchrones des crabots et des mécanismes de pré-activation (48) et assurer la mise en prise initiale des bagues de friction et des épaulements en réaction au mouvement de mise en prise initiale d'une bride de commande (46); des rampes d'auto-activation (24d, 24e, 26d et 26e) sont définies par des goujons en saillie sur un moyeu (22); d'autres rampes d'auto-activation (54b, 54c, 54d, 54e) sont définies par une bague formée intégralement avec la bride et deux des crabots. Les rampes d'auto-activation restent en prise pour consolider l'accouplement des crabots. Un synchroniseur modifié (120) comporte des ressorts (155) pour contrôler la force additive produite par les rampes d'auto-activation.

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