Abstract: A speaker includes a carrying bracket, a diaphragm, and a voice coil. The carrying bracket is provided with an accommodating cavity and a mounting opening. The accommodating cavity communicates with an exterior of the speaker through the mounting opening. A first heat dissipation layer is disposed on one end of the carrying bracket provided with the mounting opening. The diaphragm covers the mounting opening and is provided with a second heat dissipation layer. The second heat dissipation layer abuts against the first heat dissipation layer. The voice coil is connected to the second heat dissipation layer, extends into the accommodating cavity, and is spaced apart from an inner wall of the accommodating cavity.

Abstract: A speaker structure includes a magnetic conductive carrier plate, a magnetic assembly, an outer frame and a vibration assembly. The magnetic assembly locates on the magnetic conductive carrier plate and forms a magnetic gap area. The outer frame locates on the magnetic assembly. The vibration assembly includes a flexible circuit unit, a vibrating unit and a voice coil. The flexible circuit unit includes an outer fixed rack, a connecting rack and an inner fixed rack. The thickness of the outer fixed rack is greater than connecting rack. The thickness of the connecting rack is greater than inner fixed rack. The flexible circuit unit locates on the magnetic assembly. The outer fixed rack disposes on the outer frame. The voice coil disposes on the inner fixed rack of the flexible circuit unit. The voice coil locates within the magnetic gap area. The vibrating unit disposes on the flexible circuit unit.

Abstract: The present disclosure relates to the technical field of resistance testing, and in particular to a testing method and a testing loop for a contact resistance, comprising exerting a given contact pressure to enable two metallic conductors to contact, and connecting two ends of a current source with a pair of leads respectively connected with two metallic conductors as an input current. The present disclosure provides a method for acquiring a contact surface temperature at different stages at different testing points, and a contact resistance value obtained through calculation is compared and verified with a contact resistance value actually tested.

Abstract: Provided is a loudspeaker. The loudspeaker includes a shell, a vibration structure, a magnetic circuit structure and a voice coil. The shell includes a main shell, a plurality of inner support bodies and an elastic member. The plurality of inner support bodies are connected to the main shell body through the elastic member, and the plurality of inner support bodies are disposed in a surrounding manner to define an inner support cavity that penetrates in a first direction. The vibration structure is connected to the main shell. The magnetic circuit structure is located in the inner support cavity and is sandwiched between the multiple the inner support bodies. The voice coil includes a main voice coil, and the main voice coil is connected to the vibration structure and is movable in the first direction relative to the magnetic circuit structure.

Abstract: A loudspeaker housing and a loudspeaker are provided, which relate to the technical field of loudspeakers. The loudspeaker housing includes a shell and a sound-guiding structure which are integrally formed. The shell is provided with an assembly cavity and an installation opening, the assembly cavity is in communication with the outside through the installation opening, and a sound-emitting unit can reach into the assembly cavity through the installation opening. The sound-guiding structure is provided with a front cavity, a sound outlet and a working opening. The front cavity is in communication with the outside through the sound outlet, and is in communication with the assembly cavity through the working opening, and when the sound-emitting unit is installed in the assembly cavity, the sound-emitting unit closes the working opening. The loudspeaker adopts the above-mentioned loudspeaker housing, with which, the structure is simple.

Abstract: A vibration assembly and a loudspeaker are provided. The vibration assembly includes a yoke structure, a diaphragm, a magnet member, and a voice coil. The yoke structure includes a plurality of first magnetic conductive layers and a plurality of first through holes. The diaphragm is arranged at a top end of the yoke structure. The magnet member is arranged at a bottom of a cavity formed by the diaphragm and the yoke structure, and an annular magnetic gap is between the magnet member and the yoke structure. The voice coil is arranged in the magnetic gap and connected to the diaphragm.

Abstract: Provided are an elastic material and a preparation method therefor and a loudspeaker and an electronic device. The elastic material comprises a carrying substrate, and a nanomaterial and a molecular sieve arranged inside pores of the carrying substrate; in the elastic material, the carrying substrate has a content of 97-99 wt %; a mass ratio of the nanomaterial to the molecular sieve is 1:0.9-1.1. The elastic material provided has a large specific surface area, which can effectively absorb noise, dissipate acoustic energy, and improve the efficacy of vibration and noise reduction; and by loading the nanomaterial and the molecular sieve, the shielding performance and signal output quality of the electronic device are improved, and the problem of reduced service life caused by unefficient heat dissipation of the electronic device is solved.

Abstract: The present disclosure belongs to the technical field of sound-electricity conversions, and provides a multifunctional sounding device and an electronic device. A sounding unit of the multifunctional sounding device includes a vibration assembly fixed to a housing and a magnetic circuit assembly having a magnetic gap, the magnetic circuit assembly is provided with a through hole at a central position, and the vibration assembly vibrates and produces sound in a first direction under a driving of the magnetic circuit assembly. A bearing member is movably connected to the housing through an elastic arm. The motor assembly includes a coil unit accommodated in the through hole and a motor magnet, the coil unit is connected to the bearing member, the motor magnet is connected to the magnetic circuit assembly, and the coil unit is capable of driving the bearing member to vibrate in a second direction.

Abstract: Provided is a loudspeaker. The loudspeaker includes a shell, a vibration structure, a magnetic circuit structure and a voice coil. The shell includes a main shell, an inner support body and an elastic member. The inner support body is connected to the main shell body through the elastic member, multiple inner support bodies are provided, and the multiple inner support bodies are disposed in a surrounding manner to define an inner support cavity that penetrates in a first direction. The vibration structure is connected to the main shell. The magnetic circuit structure is located in the inner support cavity and is sandwiched between the multiple the inner support bodies. The voice coil includes a main voice coil and an auxiliary voice coil.

Abstract: The present disclosure belongs to the field of loudspeakers and discloses a loudspeaker and an electronic device. The loudspeaker includes a support, a diaphragm assembly, and a vibration assembly; where a cavity extending through the upper surface and the lower surface of the support is formed on the support; the vibration assembly is disposed on a side, facing the vibration assembly, of the diaphragm assembly and is capable of driving the diaphragm assembly to vibrate in a third direction; the vibration assembly includes multiple sound-producing structures, and the multiple sound-producing structures are disposed in the same layer on the support.

Abstract: A loudspeaker includes a support frame, a first diaphragm assembly, a second diaphragm assembly, a first vibration assembly, and a second vibration assembly; the first vibration assembly includes a first piezoelectric cantilever, the first piezoelectric cantilever includes a first fixed end connected to the support frame and a first free end suspended inside the support frame and connected to the first diaphragm assembly; the second vibration assembly includes a second piezoelectric cantilever, the second piezoelectric cantilever includes a second fixed end connected to the support frame and a second free end suspended inside the support frame and connected to the second diaphragm assembly; the first piezoelectric cantilever and the second piezoelectric cantilever are disposed opposite each other in a first direction, and the length of the first piezoelectric cantilever is different from the length of the second piezoelectric cantilever in the second direction perpendicular to the first direction.

Abstract: The present disclosure belongs to the technical field of sound-generating devices. Provided is a piezoelectric speaker. The piezoelectric speaker includes a support frame, a circuit assembly, a first diaphragm assembly, a second diaphragm assembly, and a vibration assembly. The periphery of the first diaphragm assembly is fixedly connected to the support frame. The periphery of the second diaphragm assembly is fixedly connected to the support frame. The vibration assembly is disposed in the cavity and located between the first diaphragm assembly and the second diaphragm assembly. The vibration assembly includes a first piezoelectric structure and a second piezoelectric structure that are disposed on the same layer on the support frame. The first piezoelectric structure is fixedly connected to the first diaphragm assembly and is configured to drive the first diaphragm assembly to vibrate in the first direction.

Abstract: A loudspeaker includes a support frame, a diaphragm assembly, a first piezoelectric cantilever, a connecting member, and a support member. The first piezoelectric cantilever includes a first fixed end connected to the support frame and a first free end suspended inside the support frame; a first end of the connecting member is connected to the first free end, the other end of the connecting member extends in a direction facing away from the first free end, and a stiffness of the connecting member is less than a stiffness of the first piezoelectric cantilever; the support member is connected to the connecting member and is used for being connected to the diaphragm assembly of the loudspeaker, and a position where the support member is connected to the connecting member is spaced from a position where the connecting member is connected to the first free end.

Abstract: Provided is a headset including a speaker and a wearing part. The speaker includes a diaphragm. The wearing part includes a cavity and a sound output port. The cavity includes an accommodating room and an acoustic channel. The speaker is arranged in the accommodating room. The diaphragm is arranged facing the acoustic channel. The sound output port is arranged on an end of the acoustic channel away from the accommodating room. The acoustic channel extends curvedly in a reference plane. In the sound propagation direction, the cross-sectional area of the acoustic channel progressively increases.

Abstract: The present invention discloses an electronic device, comprising: a case includes a containing tank. A weighting base is located in the containing tank, and the weighting base includes a weighting main body and a bearing plate assembled together. A motor coil is located on the bearing plate. A supporting plate is installed on the case, and the supporting plate is located on the motor coil. A magnetic unit is located on the supporting plate, the magnetic unit is located corresponding to the motor coil, and the magnetic unit is configured to act on the motor coil. A frame component is located on the case, and the frame component is located on the magnetic unit. A vibration component is located on the frame component. A voice coil is located under the vibration component and the voice coil extends downward into the magnetic unit.

Abstract: A loudspeaker includes a main shell body, as well as an elastic body, an inner support body and a sound generating unit which are connected in sequence from an exterior of the main shell body inwards. The sound generating unit includes a yoke suspended in an inner cavity of the main shell body, the inner support body includes a support rod body, a first connection portion is formed on a side of the support rod body facing the yoke and is connected to the yoke, a second connection portion is formed on another side of the inner support body facing the elastic body and is connected to the elastic body.

Abstract: A loudspeaker includes a magnetic circuit system and a vibration system. The magnetic circuit system includes a central magnetic component and a magnetic frame component for forming a magnetic gap. The vibration system includes a voice coil suspended in the magnetic gap, as well as a first diaphragm and a second diaphragm fixed to the magnetic frame component. Damping rubber blocks are provided in receiving grooves of the magnetic frame component to fix lead-out wires of the voice coil, and the lead-out wires extend outward through wiring ports on the magnetic frame component. As a result, the loudspeaker solves the problem of diaphragm rocking vibration.

Abstract: A loudspeaker, comprises a magnetic circuit system and a vibration system. The magnetic circuit system comprises a central magnetic component and a magnetic frame component. The vibration system comprises a voice coil, and a first diaphragm and a second diaphragm fixed on the magnetic frame component. The first diaphragm and the second diaphragm are on two sides of the central magnetic component. The voice coil comprises an upper portion and a lower portion. The upper portion is connected with the first diaphragm and coiled in a first direction. The lower portion is connected with the second diaphragm and coiled in a second direction or is set as a fixed member.

Abstract: A speaker structure includes a magnetic conductive carrier plate, a magnetic assembly, an outer frame and a vibration assembly. The magnetic assembly locates on the magnetic conductive carrier plate and forms a magnetic gap area. The outer frame locates on the magnetic assembly. The vibration assembly includes a flexible circuit unit, a vibrating unit and a voice coil. The flexible circuit unit includes an outer fixed rack, a connecting rack and an inner fixed rack. The thickness of the outer fixed rack is greater than connecting rack. The thickness of the connecting rack is greater than inner fixed rack. The flexible circuit unit locates on the magnetic assembly. The outer fixed rack disposes on the outer frame. The voice coil disposes on the inner fixed rack of the flexible circuit unit. The voice coil locates within the magnetic gap area. The vibrating unit disposes on the flexible circuit unit.

Abstract: Provided is a loudspeaker. The loudspeaker includes a shell, a vibration structure, a magnetic circuit structure, a voice coil and a bridging structure. The vibration structure is disposed on the shell. The magnetic circuit structure includes a yoke and a magnetic pole structure disposed on the yoke. The voice coil is connected to the vibration structure and is movable relative to the magnetic circuit structure. The yoke is connected to the shell through the bridging structure, and when the loudspeaker is in sound generating operation, the magnetic circuit structure is configured to vibrate independently relative to the shell under a separation of the bridging structure.