Valve assembly for an injection valve and injection valve

The invention relates to a valve assembly (12) for an injection valve (10), comprising a valve body (16) including a central longitudinal axis (L), the valve body (16) comprising a cavity (20) with a fluid inlet portion (22) and a fluid outlet portion (21), a valve needle (24) axially movable in the cavity (20), the valve needle (24) preventing a fluid flow through the fluid outlet portion (21) in a closing position and releasing the fluid flow through the fluid outlet portion (21) in further positions, the valve needle (24) comprising a protrusion (28) extending in radial direction, and an electro-magnetic actuator unit (46) being designed to actuate the valve needle (24), the electro-magnetic actuator unit (46) comprising an armature (26) axially movable in the cavity (20). The armature (26) comprises an armature cavity (36) . The armature cavity (36) has a first stop surface (42a) and a second stop surface (42b) . The normals of the stop surfaces (42a, 42b) are essentially orientated in axial direction. The second stop surface (42b) essentially faces the first stop surface (42a) . The protrusion (28) of the valve needle (24) is arranged in the armature cavity (36) axially between the first stop surface (42a) and the second stop surface (42b) in such a manner that a relative movement between the valve needle (24) and the armature (26) in axial direction is limited.