Actutaor mechanism for automation technology

Actuator mechanism (1) for automation technology, comprising:

• a manual drive (10) with a manual drive shaft (11) and/or an electric motor (60) with a motor drive shaft (61);
• an output (20) with an output shaft (21) adapted to adjust and/or actuate a fitting;
• a gear (30) by which a transmission of torque or force from the manual drive shaft and/or the motor drive shaft to the output shaft is effected,
• wherein the gear has a plurality of toothed parts (31) and toothed part carriers (34) assigned to the toothed parts;
• a torque-limiting device (40) that is adapted to define an upper limit of the torque transmissible from the manual drive shaft and/or the motor drive shaft,
• wherein the torque-limiting device (40) includes by:
• at least one assembly (41) comprising a toothed part (31) with an associated toothed part carrier (34), wherein at least one positive limiting connection (42) is provided between the toothed part and the associated toothed part carrier,
• the positive limiting connection is provided by force engagement,
• wherein, upon reaching a limit torque, the positive connection is released,
• the at least one positive limiting connection is matched to the upper limit of the torque to be transmitted;
• in at least one said assembly (41) of the at least one assembly, the force connection between the toothed part (31) and the toothed part carrier (34) is mediated by at least one intermediate element (43),
• the intermediate element is in contact with the toothed part and the toothed part carrier and is annular,
• said toothed part (31) has a longitudinal axis (31.1) and a through bore (31.2) extending along the longitudinal axis, said through bore defines an inner lateral surface (31.3) of the toothed part, wherein the inner lateral surface surrounds an associated toothed part carrier (34),
• in at least one of the assemblies (41) of the at least one assembly, the inner lateral surface (31.3) of the toothed part is spaced apart from an outer surface (34.1) of the associated toothed part carrier (34),
• wherein the at least one annular intermediate element (43) is arranged between the outer surface and the inner lateral surface and is in contact with both the inner lateral surface and the outer surface, and
• the at least one positive limiting connection (42) is effected between the intermediate element and the inner lateral surface or between the intermediate element and the outer surface.