Inhaler counter (20) comprising a counter housing (390), a rocker arm (200) with a pawl (210), the rocker arm being pivotally supported by the housing and arranged to perform a rocker movement in response to a linear actuation motion, a return spring (220) for resetting the rocker arm, a ratchet wheel (230) engagable with the pawl to convert the movement of the rocker arm into an incremental rotational motion of an axle arrangement (240) advancing a display means (60), the axle arrangement further comprising a back rotation prevention means (280) in the form of a spring loaded friction brake and a worm gear, the display means comprising rotatable indicator means (120) with teeth that engage the worm-gear and a stationary scale.一種吸入器計量器,其包含:一計量器罩;一具有棘爪之搖臂,該搖臂為該罩樞轉式地支撐且被配置成響應一線性致動運動而進行之一搖移運動;一用於重置該搖臂之復位彈簧;一棘齒輪,其和該棘爪相嚙合以將該搖臂之移動轉換成使顯示器裝置前進之軸配置遞增旋轉運動,該軸配置進一步包含一呈彈簧負載式摩擦制動形式之防後旋裝置和一蝸輪,該顯示器裝置包含一具有嚙合該蝸輪之齒的可旋轉指示器裝置和一固定刻度。10‧‧‧吸入器裝置20‧‧‧計量器30‧‧‧啟動器主體/啟動器罩40‧‧‧嘴形件60‧‧‧顯示器配置120‧‧‧指示輪190‧‧‧計量器機構200‧‧‧搖臂210‧‧‧棘爪220‧‧‧復位彈簧230‧‧‧棘齒輪240‧‧‧軸配置260‧‧‧最低點280‧‧‧防後旋裝置、摩擦制動器、後旋轉制動器配置360‧‧‧閥桿370‧‧‧桿接納主體390‧‧‧計量器罩400‧‧‧開孔410‧‧‧突起420‧‧‧頂部邊緣
