| 摘要 |
PCT No. PCT/EP86/00422 Sec. 371 Date Feb. 27, 1987 Sec. 102(e) Date Feb. 27, 1987 PCT Filed Jul. 17, 1986 PCT Pub. No. WO87/00595 PCT Pub. Date Jan. 29, 1987.Dog clutch with locking synchronization for gear shifts, wherein a synchronizer body (1) and a gear (2) turning with a different rotational speed are coupled together form-lockingly with the aid of an axially displaceable, annularly shaped sliding sleeve (3) when synchronized, whereby an inner toothing (31) of the sliding sleeve (3) engages in one respective external toothing (11, 12) of the synchronizer body (1) and the gear (2) with a locking pin and or plunger (4) located between the synchronizer body (1) and the sliding sleeve (3), which in the uncoupled stage engage in a recess (32) on the inside of the sliding sleeve (3) and have axially displaceable compression surfaces (41) which cooperate with the compression surfaces (51) on the synchro ring (5, 6) arranged between synchronizer body (1) and the gear (2), whereby at least two synchro rings (5, 50; 6, 60) are mutually connected via entrainment devices (52, 520; 62, 620) and are in entrainment connection with the synchronizer body (1) in both circumferential directions and with circumferential play, and whereby friction surfaces (24) assigned to the gear (2) form together severally frictionally connected couplings, and that when out of synchronization, the axial movement of the sliding sleeve (3) is blocked via blocking (37, 66) whereby a recess (12) in the synchronizer body (1) receives a coupling element (7) with circumferential play, with which at least two synchro rings (5, 50; 6, 60) are mutually connected. Due to the coupling of the two synchro rings (5, 50), arranged one over the other, the friction torque of the lower synchro ring (50, 60) contributes to the increase of the locking moment, so that the pointing of the blocking teeth can be kept slimmer, improving the disengagement operation. |
