Disclosed are a sound production apparatus and an electronic device, the sound production apparatus comprises an elastic member and a component to be connected, the elastic member comprises a connection end, the component to be connected comprises a coupling region, and a shape and a structure of the connection end are configured such that the connection end is fitted with the coupling region when coupling the connection end and the coupling region. The technical solutions of the present disclosure are intended to have a good coupling effect at the connection between the elastic member and the component to be connected, and to improve the reliability of the sound production apparatus.

Disclosed is an application device, comprising an elastic member group comprising a plurality of elastic members each comprises first and second connecting portions and a deformation portion therebetween, the first and second connecting portions are respectively connected to different members in the application device, the different members are movable or fixed relative to each other, the deformation portion is formed by extending from a first end to a second end in a straight line and/or a curve in same or different directions, forming manner and/or a cross-sectional size and/or material of at least one elastic member are different from other elastic members. The elastic members can be adaptively changed according to different internal environments of the application device, have good compatibility and are simple and convenient to manufacture, facilitate the thinning of products, maintain good compliance, provide sufficient displacement and do not affect the vibration of a vibration unit.

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

The present disclosure provides an acoustic output apparatus. The acoustic output apparatus may include a vibration assembly and a mass element. The vibration assembly may include a piezoelectric structure and a vibration element. The piezoelectric structure may be configured to convert an electrical signal into mechanical vibrations, and the vibration element may be connected to the piezoelectric structure at a first position of the piezoelectric structure and configured to receive the mechanical vibrations to generate an acoustic signal. The mass element may be connected to the piezoelectric structure at a second position of the piezoelectric structure.

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

The present disclosure relates to a micro-electromechanical system (MEMS) device and a method of forming the same. The MEMS device includes a substrate, a cavity, an interconnection structure and a proof mass. The substrate includes a first surface and a second surface opposite to the first surface. The cavity is disposed in the substrate, extending between the first surface and the second surface. The interconnection structure is disposed on the first surface of the substrate, over the cavity. The proof mass is disposed in the cavity, connected to the interconnection structure, the proof mass having a thickness which is smaller than a thickness of the substrate.

A loudspeaker is provided having a frame, a device for generating a magnetic field in a magnetic circuit exhibiting an air gap, turns of conductive materials for moving in the air gap, a diaphragm rigidly connected to the turns of the conductive materials that moves in a direction of movement with respect to the frame, the diaphragm having an inner face and an outer face. The inner face of the diaphragm is positioned to face the frame, and the loudspeaker also contains ag rid that stiffens the diaphragm and is shaped to allow the grid to be glued to the outer face of the diaphragm. The grid glued on the diaphragm forces the diaphragm to execute the movements of the turns of conductive materials. The diaphragm obeys impulses given by the turns of the conductive materials, reproduces them identically and transmits vibrations to the air without creating parasitic standing waves.

A loudspeaker is provided having a frame, a device for generating a magnetic field in a magnetic circuit exhibiting an air gap, turns of conductive materials for moving in the air gap, a diaphragm rigidly connected to the turns of the conductive materials that moves in a direction of movement with respect to the frame, the diaphragm having an inner face and an outer face. The inner face of the diaphragm is positioned to face the frame, and the loudspeaker also contains ag rid that stiffens the diaphragm and is shaped to allow the grid to be glued to the outer face of the diaphragm. The grid glued on the diaphragm forces the diaphragm to execute the movements of the turns of conductive materials. The diaphragm obeys impulses given by the turns of the conductive materials, reproduces them identically and transmits vibrations to the air without creating parasitic standing waves.

A sound generating device includes a magnet and a center pole on a yoke, a bobbin around the center pole, a coil wound around the bobbin, a frame outside the yoke, a damper between the frame and the bobbin, and a spacer in the bobbin.