Anchoring device for a cable sheath, the anchoring device comprising three main parts: - a sheath terminal having a first cylindrical portion and a second cylindrical portion; - a support member having a slot open out at one edge thereof for receiving the first cylindrical portion of the sheath terminal; and - retaining means comprising a substantially U-shaped resilient member having two opposite arms provided with ends, the retaining means being adapted for receiving and retaining a the second cylindrical portion of the sheath terminal therebetween, whereby the second cylindrical portion of the sheath terminal has a diameter substantially larger than the distance between the ends of the retaining means when the terminal is not inserted into the retaining means, wherein the support member has guiding means comprising guide members (6a, 6b) that are formed integrally therewith for guiding the retaining means as the second cylindrical portion of the sheath terminal is received into the support member, wherein the guide members (6a, 6b) comprise at least one inclined ramp configured such that the ends of the retaining means slide on the guide members (6a, 6b) until said ends overcome the second cylindrical portion of the sheath terminal when the sheath terminal has reached an irreversible, final position, characterised in that the retaining means are adapted for being snap-fitted into the support member, wherein it further comprises securing and guiding means (10, 11) formed in the retaining means that cooperate with corresponding securing and guiding means (12, 13) formed in the support member protruding respectively from a substantially vertical wall of the support member and a substantially horizontal wall of the support member for securing and guiding the retaining means in the support member. - a sheath terminal having a first cylindrical portion and a second cylindrical portion; - a support member having a slot open out at one edge thereof for receiving the first cylindrical portion of the sheath terminal; and - retaining means comprising a substantially U-shaped resilient member having two opposite arms provided with ends, the retaining means being adapted for receiving and retaining a the second cylindrical portion of the sheath terminal therebetween, whereby the second cylindrical portion of the sheath terminal has a diameter substantially larger than the distance between the ends of the retaining means when the terminal is not inserted into the retaining means, wherein the support member has guiding means comprising guide members (6a, 6b) that are formed integrally therewith for guiding the retaining means as the second cylindrical portion of the sheath terminal is received into the support member, wherein the guide members (6a, 6b) comprise at least one inclined ramp configured such that the ends of the retaining means slide on the guide members (6a, 6b) until said ends overcome the second cylindrical portion of the sheath terminal when the sheath terminal has reached an irreversible, final position, characterised in that the retaining means are adapted for being snap-fitted into the support member, wherein it further comprises securing and guiding means (10, 11) formed in the retaining means that cooperate with corresponding securing and guiding means (12, 13) formed in the support member protruding respectively from a substantially vertical wall of the support member and a substantially horizontal wall of the support member for securing and guiding the retaining means in the support member.