Going train for a timepiece
The going train for a timepiece has a mechanical movement having a frame ( 0 ), a barrel ( 1 ) and an escapement pinion ( 5 ) which are connected by the going train. This going train has a stepping-up epicyclic train having a first planet gear ( 6 ) with a constant rotational speed during normal operation of the movement, a second planet gear ( 7 ) kinematically connected to the escapement pinion ( 5 ), at least one satellite gear ( 9 ) each meshing with the first planet gear ( 6 ) and the second planet gear ( 7 ), and a satellite carrier ( 8 ) kinematically connected to the barrel ( 1 ) and carrying the satellite gear(s) ( 9 ).
1. A going gear train for a timepiece movement having a frame ( 0 ), a barrel ( 1 ), and an escapement pinion ( 5 ), the going gear train connects the barrel to the escapement pinion and comprises a stepping-up epicyclic train having a first planet gear ( 6 ), a second planet gear ( 7 ) connected kinematically to the escapement pinion ( 5 ), at least one satellite gear ( 9 ) meshing with the first planet gear ( 6 ) and the second planet gear ( 7 ), and a satellite carrier ( 8 ) connected kinematically to the barrel ( 1 ) and carrying the satellite gear(s) ( 9 ),
wherein the satellite carrier ( 8 ) effects one full turn per hour.
2. The going gear train as claimed in claim 1 , wherein the first planet gear ( 6 ) has a crown having internal toothing meshing with each satellite gear ( 9 ) and the second planet gear ( 7 ) has a wheel with external toothing meshing with each satellite gear ( 9 ).
3. The going gear train as claimed in claim 2 , wherein the satellite carrier ( 8 ) has a satellite carrier wheel ( 8 . 1 ) meshing directly with a first toothing ( 2 ) of the barrel ( 1 ).
4. The going gear train as claimed in claim 2 , further comprising at least one intermediate mobile ( 10 ) between the wheel ( 7 . 1 ) of the second planet gear ( 7 ) and the escapement pinion ( 5 ) of the movement.
5. The going gear train as claimed in claim 2 , further comprising an hour wheel ( 11 ) carried by an axle passing coaxially through the epicyclic train, this hour wheel being in direct engagement with a second toothing ( 3 ) of the barrel ( 1 ) of the movement and effecting one full turn in twelve hours or twenty four hours.
6. The going gear train as claimed in claim 2 , wherein the first planet gear ( 6 ) has a speed of zero and is thus fixed with respect to the frame ( 0 ) of the movement during normal operation of the movement.
7. The going gear train as claimed in claim 2 , wherein the first planet gear ( 6 ) is rotationally mounted on the frame ( 0 ) of the movement and is kinematically connected to a winding stem which the said movement comprises when this winding stem is in the time-setting position.
8. The going gear train as claimed in claim 1 , wherein the satellite carrier ( 8 ) has a satellite carrier wheel ( 8 . 1 ) meshing directly with a first toothing ( 2 ) of the barrel ( 1 ).
9. The going gear train as claimed in claim 1 , further comprising at least one intermediate mobile ( 10 ) between the wheel ( 7 . 1 ) of the second planet gear ( 7 ) and the escapement pinion ( 5 ) of the movement.
10. The going gear train as claimed in claim 1 , further comprising an hour wheel ( 11 ) carried by an axle passing coaxially through the epicyclic train, this hour wheel being in direct engagement with a second toothing ( 3 ) of the barrel ( 1 ) of the movement and effecting one full turn in twelve hours or twenty four hours.
11. The going gear train as claimed in claim 1 , wherein the first planet gear ( 6 ) is rotationally mounted on the frame ( 0 ) of the movement and is kinematically connected to a winding stem which the said movement comprises when this winding stem is in the time-setting position.
12. A timepiece comprising the going gear train as claimed in claim 1 .
13. The timepiece as claimed in claim 12 , further comprising a time display having a minute hand carried by the satellite carrier ( 8 ) of the epicyclic train of the going gear train.
14. The timepiece as claimed in claim 13 , wherein the time display has an hour hand driven by an hour wheel ( 11 ) meshing directly with second toothing ( 3 ) of the barrel ( 1 ) of the movement.
15. The movement as claimed in claim 1 , wherein the first planet gear ( 6 ) has a crown having internal toothing meshing with each satellite gear ( 9 ) and the second planet gear ( 7 ) has a wheel with external toothing meshing with each satellite gear ( 9 ).
16. A timepiece movement having a frame ( 0 ), a barrel ( 1 ), an escapement pinion ( 5 ) and a going train, the going train comprising a stepping-up epicyclic train having a first planet gear ( 6 ), a second planet gear ( 7 ) connected kinematically to the escapement pinion ( 5 ), at least one satellite gear ( 9 ) meshing with the first planet gear ( 6 ) and the second planet gear ( 7 ), and a satellite carrier ( 8 ) connected kinematically to the barrel ( 1 ) and carrying the satellite gear ( 9 ),
wherein the satellite carrier ( 8 ) effects one full turn per hour,
wherein the satellite carrier ( 8 ) has a satellite carrier wheel ( 8 . 1 ) meshing directly with a first toothing ( 2 ) of the barrel ( 1 ), and
wherein each satellite gear ( 9 ) has a satellite pinion ( 9 . 1 ) in engagement with the first planet gear ( 6 ) and a satellite wheel ( 9 . 2 ) in engagement with a pinion ( 7 . 2 ) of the second planet gear ( 7 ), this second planet gear ( 7 ) having a second planet gear wheel ( 7 . 1 ) kinematically connected to the escapement pinion ( 5 ) of the movement.
17. The movement as claimed in claim 16 , wherein the satellite carrier ( 8 ) carries two satellite gears ( 9 ).
18. A timepiece movement having a frame ( 0 ), a barrel ( 1 ), an escapement pinion ( 5 ) and a going train, the going train comprising a stepping-up epicyclic train having a first planet gear ( 6 ), a second planet gear ( 7 ) connected kinematically to the escapement pinion ( 5 ), at least one satellite gear ( 9 ) meshing with the first planet gear ( 6 ) and the second planet gear ( 7 ), and a satellite carrier ( 8 ) connected kinematically to the barrel ( 1 ) and carrying the satellite gear ( 9 ),
wherein the satellite carrier ( 8 ) effects one full turn per hour, and
wherein the first planet gear ( 6 ) has a speed of zero and is thus fixed with respect to the frame ( 0 ) of the movement during normal operation of the movement.
19. The movement as claimed in claim 18 , wherein the satellite carrier ( 8 ) has a satellite carrier wheel ( 8 . 1 ) meshing directly with a first toothing ( 2 ) of the barrel ( 1 ).
20. The movement as claimed in claim 18 , further comprising at least one intermediate mobile ( 10 ) between the wheel ( 7 . 1 ) of the second planet gear ( 7 ) and the escapement pinion ( 5 ) of the movement.