Patent ID: 7934669

Claim:
A nozzle assembly comprising a nozzle body with a recess into which a nozzle needle is introduced and at one axial end of which an injection nozzle is embodied which, axially adjacent to the injection nozzle, has a first guide region for the nozzle needle which has at least one cross-sectional extension which extends toward the other axial end of the recess, the recess being embodied for supplying fluid to the injection nozzle, and in a subsection of the cross-sectional extension a guide bushing is introduced into the recess, which guide bushing forms a second guide region for the nozzle needle and which is embodied for conducting fluid radially outside of the second guide region, the nozzle assembly further comprising a coupling element which is secured on the nozzle needle, wherein an axial end of a bellows is directly connected to the coupling element and a sleeve shaped spring holder is rigidly connected to the coupling element, wherein an axial end of a resetting spring is supported by the spring holder, wherein the spring holder is designed to axially cover the bellows, and wherein the coupling element and spring holder are rigidly secured to the nozzle needle such that the coupling element and spring holder are carried by the nozzle needle during axial movement of the nozzle needle relative to the nozzle body.