Assembly having a tubular portion crimped to a cable at several locations with varying degrees of compression

An assembly comprising:

• a stripped end section (6) of an electric cable (4);
• and
• a connecting device (3) securely assembled on the stripped end section (6) of the electric cable (4),
• said connecting device (3) comprising a conducting element (7) having a tubular portion (13) and an insertion opening (16), said stripped end section (6) of the electric cable (4) extending through the insertion opening (16) and into an interior of the tubular portion (13), wherein said tubular portion (13) comprises
• a) a crimped first zone (40) with a first portion (43) of said stripped end section (6) located in said crimped first zone (40), and with said first portion (43) having a first predetermined degree of compression,
• b) a crimped second zone (41) with a second portion (44) of said stripped end section (6) located in said crimped second zone (41), and with said second portion (44) having a second predetermined degree of compression lower than said first predetermined degree of compression, wherein, of said crimped first zone and said crimped second zone, said crimped first zone (40) is farthest from said insertion opening (16) and said crimped second zone (41) is closest to said insertion opening (16), and
• c) a punched third zone (42) with a third portion (56) of said stripped end section (6) that is located in said punched third zone (42), said punched third zone (42) being located between said crimped first and second zones (40, 41), and with said third portion (56) having a third predetermined degree of compression higher than said first predetermined degree of compression, whereby said tubular portion (13) and said stripped end section (6) are crimped and punched together, and
• wherein said first predetermined degree of compression is comprised in a range of 10% to 30%,
• wherein said second predetermined degree of compression is comprised in a range of 2% to 20%, and
• wherein said third predetermined degree of compression is comprised in a range of 25% to 45%,
• wherein a compactness of the third punched zone defined as a ratio of i) an external perimeter of the third punched zone to ii) a smallest height passing through a center of gravity of the third punched zone, is greater than 6, and
• wherein a compactness of the crimped first zone and of the crimped second zone defined as i) a ratio of external perimeter of the crimped first zone and of the crimped second zone to ii) a smallest height passing through a center of gravity of the crimped first zone and of the crimped second zone, is less than 6.