Mounting arrangement and coupling assembly for a drug-delivery device

摘要

A mounting arrangement for a drug-delivery device is proposed, the mounting arrangement comprising: a plug element with a longitudinal axis (L) and a housing part having a recess with a side wall which is adapted to receive the plug element. At least one of the plug element or the side wall of the recess are provided with a protrusion for fixing the plug element in a given position relative to the housing part by a force-fit engagement. Furthermore, a coupling assembly is proposed, the coupling assembly comprising the plug element and the housing part being mechanically coupled to each other.

主权项

1. A mounting arrangement for a drug-delivery injection device comprising
a plug element with a longitudinal axis (L) and a housing part having a recess with a side wall which is adapted to receive the plug element, where the plug element and the housing are both part of a drug delivery device comprising a cartridge holder connected to the housing, the side wall of the recess being provided with a protrusion for fixing the plug element in a given position relative to the housing part by a force-fit engagement, wherein the longitudinal profile of the protrusion is inclined along an edge as defined by an increasing radial distance (R) along a longitudinal end section of the protrusion for the purpose of facilitating the insertion of the plug element into the recess where the edge establishes the force-fit engagement, wherein the longitudinal profile of the protrusion is arranged and designed such that the longitudinal angle (A1) between the longitudinal end section and the longitudinal axis (L) is between 1° and 30° and/or a cross-section of the protrusion perpendicular to the longitudinal axis (L) is designed such that the radial distance (R) between the protrusion and the longitudinal axis (L) decreases monotonously to a given minimum on a first side face and, on a second side face being adjacent to the first side face, increases monotonously.