Medicament delivery device comprising - a housing (10; 110; 210; 310; 414) configured to receive a medicament container (16; 112; 316; 452) having a delivery member (20; 114; 318; 448) and a shield (22; 116; 320; 446) that covers said delivery member (20; 114; 318; 448), the housing having a longitudinal axis (30; 134; 350; 415), and comprising first connecting means (28; 129; 216; 312; 434) - a protective cap assembly (24; 128; 212; 322; 410) comprising a protective cap (26; 126; 214; 324; 428) which comprises second connecting means (27; 127; 215; 326; 432), wherein the first and the second connecting means (28; 122; 216; 312; 434 and 27; 127; 215; 326; 432) are configured such that a displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 414) allows the protective cap (26; 126; 214; 324; 428) to be removed from the housing, and wherein the protective cap (26; 126; 214; 324; 428) further comprises third connecting means (64; 140; 332; 444) for connecting to the shield (22; 116; 320; 446) of the delivery member (20; 114; 318; 448) such that removal of the protective cap (26; 126; 214; 324; 428) from the housing causes removal of the shield (22; 116; 320; 446) from the medicament container (16; 112; 316; 452), wherein the protective cap assembly (24; 128; 212; 322; 410) further comprises first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) configured to interact with corresponding second disconnecting means of the housing (14; 122; 220; 352; 420) and of the protective cap (63; 131; 246; 345; 428) such that activation of the first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) of the protective cap assembly (24; 128; 212; 322; 410) causes the displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 310; 414), wherein said first disconnecting means comprises an energy accumulating member, and an activation member configured to energize, upon activation, said energy accumulating member for activation of said first and second disconnecting means, wherein said first disconnecting means comprises a spring operably connected to said housing and to said protective cap and drivably connected to said activation member such that activation of said activation member causes said energy accumulating member to be compressed and thereby to displace said protective cap, and an activation member configured to energize, upon activation, said spring for activation of said first and second disconnecting means, wherein said activation member comprises a mechanical actuator (456, 458) arranged manually operable, such that a force applied on said mechanical actuator (456, 458) causes a displacement of said mechanical actuator (456, 458), in turn causing said energy accumulating member to be compressed. - a housing (10; 110; 210; 310; 414) configured to receive a medicament container (16; 112; 316; 452) having a delivery member (20; 114; 318; 448) and a shield (22; 116; 320; 446) that covers said delivery member (20; 114; 318; 448), the housing having a longitudinal axis (30; 134; 350; 415), and comprising first connecting means (28; 129; 216; 312; 434) - a protective cap assembly (24; 128; 212; 322; 410) comprising a protective cap (26; 126; 214; 324; 428) which comprises second connecting means (27; 127; 215; 326; 432), wherein the first and the second connecting means (28; 122; 216; 312; 434 and 27; 127; 215; 326; 432) are configured such that a displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 414) allows the protective cap (26; 126; 214; 324; 428) to be removed from the housing, and wherein the protective cap (26; 126; 214; 324; 428) further comprises third connecting means (64; 140; 332; 444) for connecting to the shield (22; 116; 320; 446) of the delivery member (20; 114; 318; 448) such that removal of the protective cap (26; 126; 214; 324; 428) from the housing causes removal of the shield (22; 116; 320; 446) from the medicament container (16; 112; 316; 452), wherein the protective cap assembly (24; 128; 212; 322; 410) further comprises first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) configured to interact with corresponding second disconnecting means of the housing (14; 122; 220; 352; 420) and of the protective cap (63; 131; 246; 345; 428) such that activation of the first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) of the protective cap assembly (24; 128; 212; 322; 410) causes the displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 310; 414),