Abstract: The present disclosure discloses a sound device includes a frame, a magnet system, and a first vibration system and a second vibration system arranged on two sides of a magnet system. The magnet system includes a first central yoke, a central magnet mounted on the first central yoke, a side yoke surrounding the central magnet and fixed to the frame, and a connection portion connecting the first central yoke and the side yoke. The side yoke includes a first side yoke fixed to the frame and a second side yoke bending and extending from an edge of the first side yoke towards the central magnet; the connection portion connects the first central yoke and the second side yoke. The sound device in the present disclosure has higher magnetic ability and miniaturization ability.

Abstract: A double-sided sound device includes a first vibration system, a second vibration system, and a magnetic circuit system, and the second vibration system is disposed at a lower side of the first vibration system. The magnetic circuit system includes an inner magnet part, an outer magnet part, and non-magnetically conductive connectors. The inner magnet part includes a first inner pole core, two first inner magnetic steels, a second inner magnetic steel, and a second inner pole core. The outer magnet part includes a first outer pole core, a second outer pole core, and outer magnetic steels. The non-magnetically conductive connectors connect the second outer pole core and the first inner pole core. The double-sided sound device reduces a product size, and further reduces material costs.

Abstract: A sound generator provided in the present disclosure includes a frame, a magnetic circuit unit, and a first vibration unit and a second vibration unit arranged on two sides of the magnetic circuit unit. The magnetic circuit unit includes a first central magnetic yoke in the middle, a central magnet fixed to the first central magnetic yoke, a magnetic component arranged around the central magnet and fixed to the frame, and a connecting portion connecting the first central magnetic yoke to the magnetic component. The central magnet includes a first magnet portion fixed to the first central magnetic yoke and a second magnet portion fixed to the side of the first magnet portion away from the first central magnetic yoke, a projection area of the first magnet portion along a vibrating direction is greater than a projection area of the second magnet portion along the vibrating direction.

Abstract: The present disclosure discloses a sound device includes a frame, a magnet system, and a first vibration system and a second vibration system arranged on two sides of a magnet system. The magnet system includes a first central yoke, a central magnet mounted on the first central yoke, a side yoke surrounding the central magnet and fixed to the frame, and a connection portion connecting the first central yoke and the side yoke. The side yoke includes a first side yoke fixed to the frame and a second side yoke bending and extending from an edge of the first side yoke towards the central magnet; the connection portion connects the first central yoke and the second side yoke. The sound device in the present disclosure has higher magnetic ability and miniaturization ability.

Abstract: The present application discloses a speaker box, including: a housing having an accommodating space; a speaker accommodated in the accommodating space for dividing the accommodating space into a front cavity and a rear cavity; a sound passageway formed in the accommodating space for communicating the front cavity with outside of the speaker box; a leakage hole penetrating the housing for communicating the rear cavity with the outside; a first air permeable film covering the leakage hole; a sound cavity formed by the front cavity and the sound passageway; an auxiliary leakage hole penetrating the sound passageway for communicating the rear cavity with the sound passageway; and a second air permeable film covering the auxiliary leakage hole.