Patent ID: 8516912

Claim:
A swing leaf operator comprising: a closer portion having an output shaft, a cam disc torsion-resistantly disposed on the output shaft, a pressure roller, a closer spring pressing the pressure roller against a running surface of the cam disc by means of an operational connection, a drive motor in operational connection with the output shaft, wherein the pressure roller is disposed with regard to an axial center of the output shaft such that, upon opening or closing of a swing leaf coupled to the output shaft, the pressure roller is moved along a path, wherein, in different modes of operation of the swing leaf operator at a respective opening angle of the swing leaf, a substantial identical torque is applied to the swing leaf because the path bypasses the axial center of the output shaft and because of a configuration of the running surface of the cam disc, and a means for adjusting a distance of the pressure roller with regard to the path of the pressure roller in a mounted condition of the swing leaf operator, wherein the adjusting means comprises a mounting bracket, at which the pressure roller is stationarily and freely rotatably disposed, the mounting bracket having a threaded bore hole extending in a second direction perpendicular to a longitudinal extension of the output shaft and to a longitudinal extension of the closer portion, the closer portion has a lateral wall, in which a through opening is formed in such a way that, from an outer side of the lateral wall, a screw is insertable into the threaded bore; and the mounting bracket is supported and guided by a guide of a connecting member coupled to the closer spring.