Rotary actuator unit with load control

A rotary actuator unit comprising

• a casing (200) and an internal rotating shaft integral with rotating end flanges projecting from the casing (200) at a main axis of rotation,
• retaining means (B1, 200a, 200b) integral to a housing (200),
• a load cell (300) apt to detect a load acting on one of the rotating end flanges, characterised by which it further comprises
• an articulated link parallelogram frame defined by
• a pair of end brackets (201, 202) constrained to the rotating end flanges, equipped with respective hinge bodies (201b, 202b) defining parallel hinge axes (X1, X2) in which first hinge pins (P1, P2) are pivotingly engaged,
• a pair of lower (204) and upper (205) end plates hinged a proximal end to the hinge pins (P1, P2),
• the lower (204) and upper (205) end plates being provided with second hinge pins (P3, P4) at a distal end,
• and also an attachment plate (206) hinged at respective ends to the second hinge pins (P3, P4),
• and by that the upper end plate (205) is abutting the load cell (300) and the attachment plate (206) has fastening means (B3) to engage a user structure.