(57) Device for connecting a tool (T) to a driving means (A) of a working machine; said
device comprising a first member (2) and a second member (3), fit to be fixed to the
tool (T) and to the driving means (A), and provided with hooking means (4,5) for the
mutual removable hooking; one of said members (3,2) being furthermore provided with
at least a bolt means (6) fixed to a moving means (9) sliding in this latter member
(3,2) between an internal condition and an external condition of the at least one
bolt means (6) in which this latter can engage, in a hooking and approaching condition
between the members (2,3), at least a seat (7) of a matching means (8) of the other
member (2,3) to carry out, cooperating with the hooking means (4,5), the connecting
condition (C) between the tool and the driving means; the device (1) comprising furthermore
elastic means (11) acting on the moving means (9) in direction of the external condition
of the at least one bolt means (6) and one blocking means of (10) fit to carry out
a removable stop condition of the moving means (9) at least in the internal condition
Said device (1) comprises a mobile feeler means (12), associated to one of the members
(3,2), turned toward the matching means (8) at least in conditions next to the approaching
condition, and acting on the blocking means (10); said feeler means (12) being driven,
at least in proximity of the condition of the approaching condition of the members,
from its matching with the matching means (8) to act on the blocking means (10) to
unblock the moving means (9) allowing the elastic means (11) to translate said moving
mean (9) and the at least one bolt means (6) engaging this latter in the at least
one seat (7) carrying out the connecting condition (C).
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