This refers to an auto Injector (1) to administer a dose of liquid Medicine (m), which comprises: a tubular chassis (2) that is elongated in a Telescopic chassis (12)； a subset of Carrier comprises a Carrier Tube (7) arranged Sliding part Within the chassis (2) within the housing (12),The carrier (7) is adapted to contain a syringe (3) with a Hollow injection Needle (4), a Spring and a plunger Drive (8), (9) to forward the Spring load impulse (8) to (6) a Cap from the syringe (3),The syringe (3) can hold for the axial Translation together with the carrier (7)； a Spring control (19) provided around the carrier (7)； a Control mechanism (24) insertion of Needle connected to a proximal end of the control lever (19) at Carrier (7) P To make progress for the insertion of the Needle or the chassis (2),The Control mechanism (24) insertion of Needle comprises a First flange (20) provided by the Spring control proximally (P), in which at least one fifth Bra (2.10) is available in one of the chassis (2) or the first collar (20) start stop doing Using a block (2).10) on the other side of the chassis (2) or the first collar (20), which provides a link between the fifth Bra in Ramp (2.10) and Carrier (7) to shift out the fifth Bra (2.10) with the Movement of the carrier (proximally (7) P), in which the diverted Towards outside the fifth Fastener (2).10) with the Movement of the carrier (7) proximally (P) is hindered initially by the housing (12) makes out with the top Fifth Fastener (2).10), in which the casing (12) prepares at least initially distally (d) in the housing (12) is available to Move against the predisposition proximally (P) with respect to the frame to an advanced position, bringing with it a second window (12.8) The Housing (12) out behind the fifth Fastener (2).10), thereby allowing the diversion out to decouple the fifth Bra (2.10) block (20.7) and to allow the first collar (20) Abut against the carrier (7) and to Move under the Spring load control (19).La presen
