Patent ID: 8858269

Claim:
A spring-cage terminal block ( 10 ) comprising: a bus bar ( 22 ) and a leg spring ( 42 ) for connecting a stripped conductor end piece ( 16 ) of an electrical conductor ( 12 ), wherein the bus bar ( 22 ) is made of a flat metal sheet and has at least one material passage ( 24 ) which forms an insertion opening for the stripped conductor end piece ( 16 ), wherein the material passage ( 24 ) has an annular metal collar ( 26 ) which extends in the insertion direction, and which has inner wall surfaces ( 30 a - 30 d ) of the metal collar at its inner side facing the insertion opening, wherein the leg spring ( 42 ) has a clamping leg ( 44 ) having a clamping site ( 46 ) which submerges in the material passage ( 24 ), wherein the conductor end piece ( 16 ) which is inserted into the material passage ( 24 ), transverse to the bus bar ( 22 ), is clamped between the clamping site ( 46 ) of the clamping leg ( 44 ) and the oppositely situated inner wall surface ( 30 a ) of the metal collar by means of the elastic force of the leg spring ( 42 ), wherein the inner wall surface ( 30 a ) of the metal collar opposite from the clamping site ( 46 ) of the clamping leg ( 44 ) forms a contact surface ( 52 ) for the conductor end piece ( 16 ) which extends along the longitudinal axis (A) of the clamped conductor end piece ( 16 ), and wherein the contact surface ( 52 ) has contact ribs ( 62 ) which protrude in the direction of the clamping leg ( 44 ) and extend along the longitudinal axis (A) of the clamped conductor end piece ( 16 ), such that in the clamped position, the stripped conductor end piece ( 16 ) lies against the contact ribs ( 62 ) over an extended length along its longitudinal axis (A), and is in electrical contact with the contact ribs.