Lunisolar calendar display mechanism for a clockwork movement, corresponding clockwork movement and corresponding timepiece

A timepiece movement comprising a calendar display mechanism including

• a day of the month mobile intended to control the movement of a day of the month display member and to be able to complete a full turn on itself in a maximum number p of days during long months, a mechanism for actuation of said day of the month mobile arranged to cause said day of the month mobile to turn by at least one step each day,
• a month mobile arranged to be actuated by said day of the month mobile on each full turn of said day of the month mobile,
• a correction device for short months including a month cam carried by said month mobile and including a plurality of peripheral sectors each of which is associated with a given month in a cycle of n years, n being greater than one, the mean radius of each of said peripheral sectors being a function of the length of the associated month, said mechanism for actuation of said day of the month mobile being arranged to interact with said month cam and to allow actuation of said day of the month mobile by at least one additional step at the end of each short month comprising a number of days less than p,
• wherein said month mobile carries a year cam indexed on said month cam and including n series of steps each of which is associated with a given year, each series of steps comprising a number m of steps corresponding to the number of months in the associated year, and
• wherein the calendar display mechanism includes a rotary month lever carrying a month feeler-spindle held in contact with said year cam to define the angular orientation of said rotary month lever, said rotary month lever also having a kinematic connection with a month display mobile to drive it according to a retrograde movement.

A timepiece having a timepiece movement comprising a calendar display mechanism including a day of the month mobile intended to control the movement of a day of the month display member and to be able to complete a full turn on itself in a maximum number p of days during long months,

• a mechanism for actuation of said day of the month mobile arranged to cause said day of the month mobile to turn by at least one step each day,
• a month mobile arranged to be actuated by said day of the month mobile on each full turn of said day of the month mobile,
• a correction device for short months including a month cam carried by said month mobile and including a plurality of peripheral sectors each of which is associated with a given month in a cycle of n years, n being greater than one, the mean radius of each of said peripheral sectors being a function of the length of the associated month, said mechanism for actuation of said day of the month mobile being arranged to interact with said month cam and to allow actuation of said day of the month mobile by at least one additional step at the end of each short month comprising a number of days less than p,
• wherein said month mobile carries a year cam indexed on said month cam and including n series of steps each of which is associated with a given year, each series of steps comprising a number m of steps corresponding to the number of months in the associated year, and
• wherein the calendar display mechanism includes a rotary month lever carrying a month feeler-spindle held in contact with said year cam to define the angular orientation of said rotary month lever, said rotary month lever also having a kinematic connection with a month display mobile to drive it according to a retrograde movement.