Assembly locking device, thread bolt with assembly locking device, a component with installed thread bolt as well as a manufacturing method for the assembly locking device and an assembly method of the thread bolt with assembly locking device

An assembly locking device adapted to a thread of a thread shaft of a thread bolt with a bolt head, so that the assembly locking device is positionable on the thread of the thread shaft in a loss-proof manner and the thread bolt with assembly locking device is arrangeable in a pull-out-proof manner inserted in a component opening, wherein the assembly locking device comprises the following features:

• a. a cylindrical helix comprised of a plurality of helically wound turns of a wire, which comprises a first end and a second end,
• b. starting at the first end of the helix, at least one holding turn is provided, which extends over an angular range of greater than 360° about a central longitudinal axis of the helix and comprises a positive pitch PH as well as an inner diameter DH,
• c. following the holding turn, a transition turn is provided which extends over an angular range of at least 65° about the central longitudinal axis of the helix and comprises a smaller pitch PU as well as an increasing inner diameter Du compared to the holding turn, and
• d. adjacent to the second end of the helix, a blocking turn is provided which extends over an angular range of at least 65° about the central longitudinal axis of the helix and comprises a negative pitch PB compared to the holding turn, so that at least an end portion of the blocking turn is elastically displaceable in the axial direction of the central longitudinal axis between an insertion position and a blocking position, wherein the end portion of the blocking turn forms the second end of the helix in the insertion position and is arranged at least partially radially outwardly of the transition turn and/or the holding turn in the blocking position.