Locking cylinder

A locking cylinder, particularly an electronic locking cylinder and with electromechanical rotational blocking, said locking cylinder comprising:

• a static double-body frame (1), of European profile in the form of a pear, for activation of said cylinder from the external and internal sides of the lock;
• each body having external (2) and internal (3) rotational cores or rotors each having a radial housing, which rotate in a recess of said two bodies of the static frame (1) and each of which has a key channel (2a, 3a) for introduction of the blade (65) of a corresponding electronic key (64) provided with an interactive electronic circuit that can be coded electronically;
• an electrical contact (5) positioned in said radial housing of each one of said external (2) and internal (3) rotors, which is in communication with its respective said key channel (2a, 3a) so as to contact either one of two electrical terminals (66) found opposite one another on said blade (65) of said electronic key (64) when said key is inserted operatively in said key channel (2a, 3a);
• an electrically conducting annular track (6) having an internal face and an external face, said track encircling each one of said external (2) and internal (3) rotors and having said internal face electrically communicating with each said electrical contact (5) of said rotors (2, 3);
• an electrical brush (7) which, in each one of said rotors (2, 3), communicates electrically with said external face of said annular track (6) and is loaded elastically against a second compression spring (7a);
• an electronic processing unit (31) which is in electrical communication with said electrical brushes (7) of said external (2) and internal (3) rotors;
• a retractile vertical tumbler (16) which is mounted against a helical compression spring (17) radial to said external rotor (2) and which belongs to an electromechanical device for rotational blocking of said external rotor (7) which is connected electrically to said electronic processing unit (31);
• a first eccentric cam (4) installed between said external (2) and internal (3) rotors;
• an external socket (32) enclosed axially between said first eccentric cam (4) and said external rotor (2);
• an internal socket (35) enclosed axially between said first eccentric cam (4) and said internal rotor (3);
• an external shoe (41) which is installed with axial clearance between said first eccentric cam (4) and said external rotor (2), which external shoe (41) has a sliding fit with respect to the inside of said external socket (32) and with respect to a first diametric planar lug (47) of said external rotor (2), which is located in the recess of said external shoe (41);
• an internal shoe (44) which is installed with axial clearance between said first eccentric cam (4) and said internal rotor (3), which internal shoe (44) has a sliding fit with respect to the inside of said internal socket (35) and with respect to a second diametric planar lug (48) which is located in the recess of said internal shoe (44);
• a first modular box (8) which has dimensions adapted to the inside of a first cast hollow part (1a) attached to said external rotor (2) which is made in said static double-body frame (1), said first modular box containing said electrical brush (7) of said external rotor (2), said electronic processing unit (31) and said electromechanical device for rotational locking of said external rotor (2);
• a second modular box (9) which has dimensions adapted to the inside of a second cast hollow part (1b) attached to said internal rotor (3), which is made in said static double-body frame (1), said second modular box (9) containing an autonomous electrical supply source and said electrical brush (7) corresponding to said internal rotor (3);
• and an electrical conductor (10) connected between said first (8) and second (9) modular boxes.