Transducer devices

A transducer device, comprising:

• a first magnetic circuit assembly including a dynamic component and a static component, wherein the dynamic component includes a first magnet and a magnetic conductive plate, and the static component includes a magnetic conductive element at least partially surrounding the dynamic component;
• a voice coil assembly, wherein the voice coil assembly is fixed to the static component, at least a portion of the voice coil assembly is located in a magnetic gap between the static component and the dynamic component, the dynamic component is movable relative to the voice coil assembly and the static component, and the voice coil assembly includes at least one voice coil;
• and
• a resilient plate assembly, configured to connect the dynamic component and the static component, and to allow the dynamic component to move relative to the static component in a first direction, wherein the first direction is parallel to an axis of the voice coil assembly;
• wherein an inner side surface of the magnetic conductive element facing the first magnet is provided with at least one protrusion, the at least one protrusion is arranged in a staggered manner with the voice coil assembly in the first direction, the at least one protrusion has magnetic permeability;
• the magnetic conductive plate includes a first magnetic conductive plate and a second magnetic conductive plate, the first magnetic conductive plate and the second magnetic conductive plate are respectively arranged at two ends of the first magnet along the first direction;
• the at least one protrusion includes a single protrusion, the single protrusion is located between the first magnetic conductive plate and the second magnetic conductive plate, the first magnetic conductive plate and the second magnetic conductive plate are symmetrical based on a reference plane, and the single protrusion is symmetrical based on the reference plane when in a balanced position, the reference plane is a centerline plane of the first magnet parallel to a second direction, the second direction is perpendicular to the axis of the voice coil assembly, and the balanced position is a position of the dynamic component relative to the static component when the voice coil assembly is not energized.