An injection device for delivering a dose of medicament from a syringe, the injection device comprising: a housing comprising a forward body and rearward body and wherein the forward and rearward body are axially moveably interconnected a drive mechanism arranged, in use, to be released from an energised position to deliver a dose from said syringe a latch arranged to hold the drive mechanism in the energised position and a trigger for releasing the latch wherein the injection device further comprises an interlock arrangement moveable between a locked position in which release of the drive mechanism is prevented and an unlocked position in which the drive mechanism may be released, the interlock arrangement comprising: an internal blocking formation associated with the rearward body and positioned between the latch and trigger, and wherein in use, forward movement of the rearward body relative to the forward body moves the blocking formation into the unlocked position.一種注射裝置,用以從一注射筒輸送一個劑量的藥物,該注射裝置包括:一殼體,包括一前本體及一後本體,其中該前本體及該後本體係軸向可移動的互連;一驅動機構,安排成在使用時從具能量的一位置被釋放,以從該注射筒輸送一個劑量;一閂鎖,安排成將該驅動機構固定於具能量的位置;以及一觸發器,用以釋放該閂鎖,其中該注射器裝置進一步包括一互鎖安排,其可移動於一鎖定位置及一未鎖定位置之間,該鎖定位置防止該驅動機構之釋放,該未鎖定位置釋放該驅動機構,該互鎖安排包括:內部的一止擋結構,關聯於該後本體,且定位於該閂鎖及該觸發器之間,於使用時,該後本體之相對於該前本體的向前移動將該止擋結構移動至未鎖定位置。1‧‧‧自動注射器2‧‧‧前子組件3‧‧‧後子組件5‧‧‧注射筒6‧‧‧針遮蔽20‧‧‧前本體30‧‧‧後本體35‧‧‧孔
