A double-sided speaker, comprising a magnetic conductive carrying plate, an auxiliary magnetic conductive member, a side magnetic conductive member, 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 a sidewall and a bottom plate. One side surface of the bottom plate comprises a first side edge and a second side edge opposite to the first side edge. The sidewall is disposed at the first side edge. The auxiliary magnetic conductive member is assembled to the second side edge. The side magnetic conductive member is disposed at a side edge of another side surface of the bottom plate. The first magnetic circuit module is disposed at one side of the magnetic conductive carrying plate, of which the second magnetic circuit module is disposed at another side.

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 speaker includes: a diaphragm; a coil directly or indirectly attached to the diaphragm; a pair of conducting lines connecting electrically with the coil; a yoke having one pair of longer side portions, and another pair of shorter side portions; a frame disposed between the coil and the yoke; and an inner terminal provided on an area on a straight line extended from the longer side portion of the yoke, and electrically connected to the coil.

The present disclosure discloses a conductive film for a sound generation device and the sound generation device, the conductive film comprises a conductive layer and base material layers on two sides thereof the conductive layer comprises a first conductive layer on an inner side portion, a second conductive layer on an deformation portion and a third conductive layer on an outer side portion, two ends of the second conductive layer are respectively electrically connected to the first and third conductive layers, the first and third conductive layers are metal sheets, the second conductive layer is a conductive adhesive layer formed by coating or printing, a thickness of the conductive adhesive layer is 6 μm to 15 μm, a sheet resistance of the conductive adhesive layer is 10 to 30 mΩ/mm.sup.2/mil. The conductive film has conductivity, it can be used as a sound generation diaphragm and a supporting diaphragm.

A transcutaneous bone-anchored hearing aid device for a recipient patient is described. The transcutaneous bone-anchored hearing aid device for a recipient patient comprising; a receiver coil for transcutaneous receiving of an externally generated communication signal; a signal processor configured for converting the externally generated communication signal into an electrical stimulation signal; an electromagnetic vibrator configured for receiving the electrical stimulation signal, and wherein the electromagnetic vibrator including; a coil unit configured to generate a dynamic magnetic flux based on the electrical stimulation signal; a permanent magnet configured to generate a static magnetic flux; a mass unit connected to the permanent magnet; a bobbin unit configured to engage with the coil unit, the permanent magnet, and the mass unit; a spring unit configured for maintaining an air gap below a moving mass, wherein the moving mass includes the coil unit, the permanent magnet, the mass unit and the bobbin unit, and where the moving mass and the spring unit is configured to generate an acoustical vibration; a vibrator plate configured to receive the acoustical vibration, and where the air gap is between the vibrator plate and a part of the moving mass, and wherein the mass unit has at least one insert configured to receive at least one of a group that includes at least a part of the permanent magnet, the coil unit, the vibrator plate and/or the spring unit.

An ironless magnet assembly (128) for a loudspeaker (101) comprising two pairs of magnets (136) is disclosed. Each magnet (136) of each pair having a north pole and a south pole, a first pair of magnets (136c, 136d) are arranged with the north poles of the magnets of that pair facing each other and a second pair of magnets (136a, 136b) are arranged with the south poles of the magnets of that pair facing each other. The first pair of magnets (136c, 136d) are located opposite the second pair of magnets (136a, 136b) to define a voice coil gap (112) therebetween with each north pole of the first pair being located opposite a south pole of the second pair across the voice coil gap (112).

A loudspeaker includes a magnetic circuit system, a paper cone, a suspension, a voice coil, and a frame; the magnetic circuit system is mounted at a frame low end of the frame; a suspension inner side and a suspension outer side of the suspension are respectively connected to a paper cone outer side of the paper cone and a frame high end of the frame; a voice coil high end of the voice coil is connected to a driven position of the paper cone; a voice coil low end of the voice coil and the magnetic circuit system are magnetically connected to each other; the driven position of the paper cone deviates from the center axis of the loudspeaker. Thus, when the loudspeaker is mounted in a housing to form a loudspeaker device, the effect of a diffraction problem on the loudspeaker device can be reduced or avoided.

A speaker including a frame;a magnetic circuit system fixed to the frame, comprises a plurality of magnetic circuit devices connected to each with a magnetic gap;a vibration system driven by the magnetic to vibrator, comprises a diaphragm fixed to the frame and a plurality of voice coil assembly inserted into the magnetic gap drive the diaphragm vibrate jointly. the speaker can drive the diaphragm to vibrate and produce sound with a greater driving force, and the magnetic circuit system has a higher magnetic field. The efficiency makes the speaker have a better sound effect.

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.

Disclosed is a miniature loudspeaker, comprising a magnetic circuit system which comprises a yoke, a magnet and a washer, the yoke and the magnet are fixedly bonded, the magnet and the washer are fixedly bonded, a snap-fitting portion and a limiting portion, which are mutually cooperated, are disposed on the yoke and the magnet and/or on the magnet and the washer, the limiting portion is a structure formed by removing material, the snap-fitting portion and the limiting portion are both located on bonding surfaces of two components, and the limiting portion and the snap-fitting portion are coupled and fixed. In the miniature loudspeaker, arranging a locating structure can increase a contact area between the yoke and the magnet and/or between the magnet and the washer, which enhances the bonding force, and makes the fixture firmer and more stable, thereby ensuring the performance of the miniature loudspeaker.