(57) A control unit for controlling the angular end-of-stroke positions of the clamping
arm of a locking device of the articulated lever type, in which the arm (12) is fastened
on a rotatable shaft (16) and is controlled into rotation through a toggle joint unit
(22) by the axial sliding of a control rod (20), comprises a support member (5) for
supporting a pair of sensors (48, 50) which sense the passing of reference means (32,
34) connected to the rod (20) in order to control its stop when the positions of angular
end-of-stroke of the arm (12) are reached. The support member (5) can be fastened
to the body (2) of the device at an opening (5a) of the rear zone (3) of the device
(1). The sensors (48, 50) are fixed to the support member (5) and the reference means
comprise two appendages (32, 34) separated and connected to the rod (20), at least
one (34) of which is associated to adjustable fastening means (28, 36, 38, 40) in
order to allow to fasten it in one of a plurality of positions along the rod (20).
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