A package structure of a micro speaker is provided. The package structure includes a substrate, a diaphragm, a coil, an etch stop layer, a carrier board, a permanent magnetic element, and package lid. The substrate has a hollow chamber. The diaphragm is suspended over the hollow chamber. The coil is embedded in the diaphragm. The etch stop layer is positioned below the coil and overlaps the coil in the direction that is perpendicular to the top surface of the diaphragm. The etch stop layer is made of a metal material. The carrier board is disposed on the bottom surface of the substrate. The permanent magnetic element is disposed on the carrier board and in the hollow chamber. The package lid is wrapped around the substrate and the diaphragm, and has a lid opening that exposes a portion of the top surface of the diaphragm.

A coil assembly for integration into a transducer is presented. The coil assembly may include a metal bobbin assembly, a wire coil, and one or more nonconductive printed circuit board (PCB) stiffeners. A speaker that renders micro noise in an artificial reality environment for improving simulated presence is further presented. The speaker may generate a plurality of micro noises based in part on the determined state of the virtual object. The speaker may spatialize the plurality of micro noises, such that the plurality of micro noises appears to originate from the virtual object. A speaker for speaker diaphragm motion detection using optical MEMS sensors is further presented. Optical MEMS sensors are used to optically monitor displacement of one or more portions of a speaker diaphragm. The speaker may be configured to determine that a speaker diaphragm is in rocking mode and move the speaker diaphragm out of rocking mode.

Disclosed is an application device comprising a plurality of elastic members, the elastic member comprises a first connecting portion, a second connecting portion and a deformation portion located between the first connecting portion and the second connecting portion; the first connecting portion and the second connecting portion are connected to different components in the application device respectively, and the different components are movable relative to each other, or the different components may be unmovable relative to each other; the deformation portion is formed by extending from the first end to the second end along the same direction or different directions in a straight line and/or a curved line; and each of the elastic members is integrally formed by punching a sheet-shaped structure.

Disclosed is an application device comprising a plurality of elastic members, the elastic member comprises a first connecting portion, a second connecting portion and a deformation portion located between the first connecting portion and the second connecting portion; the first connecting portion and the second connecting portion are connected to different components in the application device respectively, and the different components are movable relative to each other, or the different components may be unmovable relative to each other; the deformation portion is formed by extending from the first end to the second end along the same direction or different directions in a straight line and/or a curved line; and each of the elastic members is integrally formed by punching a sheet-shaped structure.

This application relate to the field of electronic device technologies, and in particular, to a loudspeaker and an electronic device. Embodiments of this application are provided to resolve a technical problem of insufficient sensitivity of a loudspeaker caused by a small electromagnetic driving force that drives a voice coil to vibrate. According to a loudspeaker and an electronic device in embodiments of this application, a yoke includes a bottom part and a sleeve located on the side of the bottom part. An annular magnet is sleeved on the outer side of the sleeve. A voice coil is sleeved on the sleeve and located between the magnet and the sleeve. A damper is located in a region enclosed by the sleeve. An outer edge of the damper is connected to the voice coil, and a middle part of the damper is connected to the yoke.

The invention provides a loudspeaker with a fin-reinforced voice coil structure, comprising a voice coil, fins, an upper magnetic conductor, and a magnetic conduction column, wherein a magnetic gap is formed between the upper magnetic conductor and the magnetic conduction column located in the center thereof; the voice coil works in the magnetic gap; wherein the inner wall of the voice coil is connected to the fins; wherein one end of each fin is connected and fixed to the inner wall of the voice coil; wherein the magnetic conduction column is provided with fin grooves for accommodating the other ends of the fins; wherein the width of the fin grooves is at least 0.2 mm greater than the thickness of the fins, so that the balance performance and the stability of the voice coil are greatly improved. The distortion is greatly reduced compared, by measurement, with the traditional voice coil.

A loudspeaker and an earphone are disclosed. The loudspeaker comprises: a housing; and a vibration system and a magnetic circuit system that are accommodated in the housing. The vibration system comprises a diaphragm, a centering support piece and a vibrating voice coil. The centering support piece comprises a mounting part correspondingly connected with the central part of the diaphragm. The magnetic circuit system comprises a magneto-conduct yoke, a central magnetic circuit part and a side magnetic circuit part, and a coupling magnetic circuit part located above the central magnetic circuit part, and a magnetic gap accommodating the vibrating voice coil is formed between the central magnetic circuit part and the side magnetic circuit part. When the coupling voice coil is energized, upward and downward forces are generated by magnetic field coupling of the coupling voice coil and the coupling magnetic circuit part. The loudspeaker has good sound effect.

A loudspeaker and an earphone are disclosed. The loudspeaker comprises: a housing; and a vibration system and a magnetic circuit system that are accommodated in the housing. The vibration system comprises a diaphragm, a centering support piece and a vibrating voice coil. The centering support piece comprises a mounting part correspondingly connected with the central part of the diaphragm. The magnetic circuit system comprises a magneto-conduct yoke, a central magnetic circuit part and a side magnetic circuit part, and a coupling magnetic circuit part located above the central magnetic circuit part, and a magnetic gap accommodating the vibrating voice coil is formed between the central magnetic circuit part and the side magnetic circuit part. When the coupling voice coil is energized, upward and downward forces are generated by magnetic field coupling of the coupling voice coil and the coupling magnetic circuit part. The loudspeaker has good sound effect.

A double-sided speaker, comprising a combination of magnetic conductive carrying plate with a side magnetic conductive member (or a magnetic conductive carrying plate component), a first magnetic circuit module, a second magnetic circuit module, a first voice coil, a second voice coil, a first vibrating component, and a second vibrating component. The magnetic conductive carrying plate comprises two sidewalls and a bottom plate. The two sidewalls are disposed at two side edges of a side surface of the bottom plate. The side magnetic conductive member is disposed on two side edges of another side surface of the bottom plate. The first magnetic circuit module is disposed at one side of the magnetic conductive carrying plate. The second magnetic circuit module is disposed at another side of the magnetic conductive carrying plate. The first voice coil is disposed between the first magnetic circuit module and the sidewall.

A double-sided speaker, comprising a combination of magnetic conductive carrying plate with a side magnetic conductive member (or a magnetic conductive carrying plate component), a first magnetic circuit module, a second magnetic circuit module, a first voice coil, a second voice coil, a first vibrating component, and a second vibrating component. The magnetic conductive carrying plate comprises two sidewalls and a bottom plate. The two sidewalls are disposed at two side edges of a side surface of the bottom plate. The side magnetic conductive member is disposed on two side edges of another side surface of the bottom plate. The first magnetic circuit module is disposed at one side of the magnetic conductive carrying plate. The second magnetic circuit module is disposed at another side of the magnetic conductive carrying plate. The first voice coil is disposed between the first magnetic circuit module and the sidewall.