Dispositif de synchronisation pour pignon baladeur

摘要

1,006,103. Positive clutches. REGIE NATIONALE DES USINES RENAULT. June 25, 1962 [June 30, 1961], No. 24390/62. Heading F2C. In a synchromesh device for a change-speed sliding gear 1 which is slidable and, when disengaged, rotatable on a hub 6, and has external teeth 2 engageable with teeth of a parallel shaft gear and internal clutch teeth 3 engageable with external clutch teeth 7 on the hubs, a synchromesh ring 10 has a friction cone 16 engageable with a complementary cone 5 on the gear 1 and internal teeth 11 engageable with the hub teeth 7, and chamfers 71, 111 on the hubs and ring teeth balk positive engagement of the clutch teeth 3, 7 under pro-synchronous drag torque of the cones following introductory engagement of the sliding gear external teeth 2. A lipped casing 13 fast on the hub and a ring-return spring 14 respectively axially and torsionally retain the faces 71, 111 in engagement when the synchromesh ring is released by the sliding gear. The spring 14 is anchored on the hub and the synchromesh ring and during assembly is torsionally pre-stressed. For a two-speed change by the gear 1, the synchromesh device may be provided at each end thereof, or, as shown, only for the hub teeth 7 corresponding to engagement of the gear 9 for first speed, reverse gear engagement for which further hub teeth (Fig. 1, not shown) are provided being non- synchronized.