Head for a line hedge trimmer

A head for hedge trimmer, comprising an external casing intended to rotate around an axis of rotation and equipped with at least one lateral exit hole for a cutting wire, said external casing internally defining a housing for storing a part of the cutting wire so that an end portion of said wire exits from the casing through said at least one lateral hole;

• said head further comprising, inside said housing, a pair of presser elements facing each other and defining between the presser elements an annular shaped housing to contain said part of the cutting wire, said presser elements being moveable towards each other along said axis of rotation so as to compress between the presser elements said part of the cutting wire stored between the presser elements;
• wherein the head further comprises clamping means to generate movement between said presser elements so as to clamp between said presser elements said part of the cutting wire stored between the presser elements;
• said external casing being defined by a first shell-part and a second shell-part, the two shell-parts being joinable through movement towards each other along said axis of rotation and in which said clamping means comprise a compression spring arranged between the first shell-part and a first of said presser elements so as to keep the first presser element pressed towards a second of said presser elements;
• the second shell-part having a peripheral portion to be permanently associated with the first shell-part and a central portion, slidable with respect to the peripheral portion along said axis of rotation and acting on the second presser element to move the presser elements towards the first shell-part against a thrust action exerted by said spring.