The present invention provides a micro speaker, including a frame with a containment space, and a magnetic circuit system and a vibration system contained in the containment space. The vibration system includes a first diaphragm, a circuit board, a skeleton, and a voice coil. The micro speaker further includes a welding plate structure and a balance component. The voice coil includes a lead wire electrically connected with the welding plate structure. By setting the balance component on the skeleton, the present invention can keep the weight balance at both ends of the skeleton, so as to ensure that the skeleton will not sway when the vibration system is working, so that the vibration of the skeleton is stable and the sound quality is improved.

A sound diffuser includes a housing and a transducer inside the housing. The transducer includes: a coil including a plurality of turns, each lying on a respective plane (Υ) transverse to a longitudinal axis; a ferromagnetic circuit, including a core provided with a central portion around which the coil is wound and an outer lateral portion located at the side of the coil and at least partly surrounding the coil, the outer lateral portion being separated from the core by an air gap extending longitudinally; and a permanent magnet inside the air gap that is caused to move parallel to the longitudinal axis when the coil is electrically energized. The sound diffuser includes a radiator coupled to the magnet so that longitudinal movement of the magnet parallel to the axis corresponds to longitudinal oscillation of the radiator along the axis.

A miniature sound generator is disclosed. The miniature sound generator includes a vibration system including a diaphragm and a voice coil arranged below the diaphragm for driving the diaphragm to generate sound, the voice coil having a pair of long axis edges and a pair of short axis edges; a fixing system; and a flexible circuit board elastically supporting the voice coil. The flexible circuit board includes a first fixing part connected with the fixing system, a second fixing part connected to the voice coil, and a plurality of elastic connecting pieces connecting the first fixing part to the second fixing part. The elastic connecting pieces are connected with the long axis edges of the voice coil, and the voice coil is electrically connected with the elastic connecting pieces.

A loudspeaker includes: a non-perforated membrane having a front surface facing in a forward direction for producing sound to be radiated outwardly from the loudspeaker in the forward direction and a back surface facing in a backward direction opposite to the forward direction, a magnet unit configured to provide a magnetic field in a predetermined region of space, a voice coil rigidly connected to the membrane, and configured to produce in use a magnetic field which interacts with the magnetic field provided by the magnet unit in the predetermined region of space so as to move the membrane along a longitudinal axis of the loudspeaker, a lead wire configured to input a signal to the voice coil. The lead wire is guided to the voice coil via one or more deformed holders. The lead wire remains at a single surface of the membrane without perforating the latter.

A speaker includes a frame, a vibration system, and a magnetic circuit system. The vibration system and the magnetic circuit system are respectively disposed on the frame. The vibration system includes a sound film, flexible circuit boards, a connecting rack, and a voice coil. The flexible circuit boards are disposed at intervals with the sound film. The connecting rack is connected with the sound film and the flexible circuit boards. The voice coil is fixed to the connecting rack. The voice coil includes a first voice coil and a second voice coil, and the second voice coil surrounds outside the first voice coil. The speaker of the present disclosure effectively solves the problem of supplying power to the first voice coil during the voice coil driving. The voice coil driving effectively improves the BL, provides a larger driving force, and improves sensitivity, so that performance of the speaker is better.

The present invention provides an acoustic device including a frame, a vibration system and a magnetic system. The vibration system includes a diaphragm, a voice coil assembly, and a support assembly. The support s assembly includes a flexible circuit board and a support membrane. The flexible circuit board includes a first fixing end secured to the frame, a second fixing end secured to the voice coil assembly, a connecting portion, and a soldering pad. The voice coil assembly includes a first voice coil and a second voice coil. The first voice coil includes a first leading wire. The first leading wire has a first extension part extending from a surface of the first voice coil, a second extension part bending and extending from the first extension part along an outer surface of the second voice coil, and a soldering part welding to the soldering pad.

The present invention provides an acoustic device including a frame, a vibration system and a magnetic circuit system. The vibration system includes a diaphragm, a voice coil, a voice coil holder connecting the diaphragm and the voice coil, and a support assembly connecting the frame and the voice coil holder. The voice coil holder comprises a first fixing portion extending toward a direction of the voice coil, a second fixing portion extending toward to the support assembly, and a first connecting portion connecting the first fixing portion and the second fixing portion. The first fixing portion is mounted to the voice coil, and the second fixing portion is mounted to the support assembly. The first connecting portion provides with a reinforcing rib protruding and extending from the first fixing portion.

Provided is a speaker, including frame, vibration unit, and magnetic circuit unit driving the vibration unit and having magnetic gap, the vibration unit including diaphragm fixed to the frame, voice coil component fixed to the diaphragm and driving the diaphragm, and lower voice diaphragm component supporting the voice coil component. The voice coil component includes voice coil inserted in the magnetic gap and holder fixed to the diaphragm and the voice coil, the voice coil includes first and second voice coil portions. The first voice coil portion is arranged close to the lower voice diaphragm component and is fixed to the lower voice diaphragm component through the holder. The first voice coil portion includes two first sides and second side connecting thereto, and the second voice coil portion protrudes away from the second side. The voice coil component has greater circumference than the racetrack voice coil, enabling better acoustic performance.

A bobbin for an electro-acoustic driver includes an outer surface, a substantially planar surface at an end of the bobbin, and a bobbin axis that is substantially coaxial with a housing axis. The bobbin is disposable inside a housing and configured to move along the bobbin axis. The substantially planar surface at the end of the bobbin is securable to an acoustic diaphragm. The bobbin includes one or more of (a) legs extending from the outer surface to the substantially planar surface, (b) a wall which extends about substantially all of a perimeter of the planar surface, and (c) a plurality of through holes in the substantially planar surface.

Embodiments disclosed in the present disclosure relate to vibration transducers. Such a transducer includes an electromagnet having a conductive coil. The conductive coil is configured to be driven by an electrical input signal to generate magnetic fields. The transducer further includes a magnetic diaphragm that is configured to mechanically vibrate in response to the generated magnetic fields. Additionally, the transducer includes a pair of cantilevered arms formed from damping steel. The cantilevered arms couple the magnetic diaphragm to a frame. The magnetic diaphragm vibrates with respect to the frame when the electromagnet is driven by the electrical input signal. Additionally, the pair of flexible support arms are connected to opposing sides of the magnetic diaphragm.