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1. (WO1979001011) SYNCHRONIZER FOR TRANSMISSIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/001011 International Application No.: PCT/US1979/000262
Publication Date: 29.11.1979 International Filing Date: 23.04.1979
IPC:
F16D 23/06 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
D
COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
23
Details of mechanically-actuated clutches not specific for one distinct type; Synchronisation arrangements for clutches
02
Arrangements for synchronisation
04
with an additional friction cluch
06
and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
Applicants:
Inventors:
Priority Data:
90154401.05.1978US
Title (EN) SYNCHRONIZER FOR TRANSMISSIONS
(FR) SYNCHRONISEUR POUR TRANSMISSIONS
Abstract:
(EN) A compact device for synchronizing the rotational speed of a gear with a shaft in a transmission. The device (16) comprises a friction clutch including first and second cone clutch members (34, 38), a positive clutch including first and second jaw clutch members (32, 36), a plurality of springs (42) reacting between the second members for biasing the second cone member toward engagement with the first cone member, a stop means (44) for preventing engagement of the second cone with the first cone member until initial sliding movement of the first jaw member, and a blocker means (46, 48) for preventing engagement of the positive clutch until the friction clutch brings the gear to substantial synchronism with the shaft. The second jaw member (36) includes an outer circumferential surface which supports an inner circumferential surface of the second cone member (38). The blocker means (46, 48), which are defined on the outer and inner circumferential surfaces, allow limited relative rotation of the second cone clutch member on the second jaw member and prevent sliding movement of the second jaw member into engagement with the first jaw member until substantial synchronism is reached. Initial movement of the second jaw member engages the friction clutch through the springs; thereafter, force for engaging the friction clutch is transmitted through the blocker.
(FR) Dispositif compact de synchronisation de la vitesse de rotation d"un pignon avec un arbre dans une transmission. Le dispositif (16) comprend un embrayage a friction comportant un premier et un second organes coniques d"embrayages (34, 38), un embrayage positif comprenant un premier et un second organes d"embrayage a machoire (32, 36), une pluralite de ressorts (42) reagissant entre les seconds organes pour devier le second organe conique et l"amener en prise avec le premier organe conique, un arret (44) pour empecher l"engagement du second organe conique avec le premier organe conique jusqu"a ce qu"il se produise un mouvement par coulissement du premier organe a machoire, et des moyens bloqueurs (46, 48) pour empecher l"engagement de l"embrayage positif jusqu"a ce que l"embrayage a friction amene le pignon en synchronisation avec l"arbre. Le second organe a machoire (36) comprend une surface circonferentielle externe qui supporte une surface circonferentielle interne du second organe conique (38). Les moyens bloqueurs (46, 48) definis sur les surfaces circonferentielles interne et externe, permettent une rotation relative limitee du second organe conique d"embrayage sur le second organe a machoire et empechent le second organe a machoire de coulisser et de s"engager avec le premier organe a machoire jusqu"a ce qu"une synchronisation soit atteinte. Le mouvement initial du second organe a machoire engage l"embrayage a friction par l"intermediaire des ressorts; apres quoi, une force d"engagement de l"embrayage a friction est transmise par l"intermediaire du bloqueur.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)