An electronic device has an exterior housing with a piezoelectric speaker disposed in an opening formed within the housing. The piezoelectric speaker includes a speaker diaphragm that is secured within the opening with a vibration isolator. The vibration isolator allows the diaphragm to vibrate independently from the housing.

A digital acoustic device including: at least one suspended diaphragm facing a support and at least one actuator associated with the diaphragm, the associated actuator being configured to move the diaphragm away from and/or closer to the support; a stop mechanism configured to interrupt movement of the diaphragm further to activating the actuator when the diaphragm has a non-zero speed, the stop mechanism being sized to interrupt the movement of the diaphragm when the movement of the diaphragm is greater than or equal to 50% of the theoretical maximum stroke of the diaphragm and lower than or equal to 95% of the theoretical maximum stroke of the diaphragm.

A speaker, including a paper cone, a damping ring, a damper, a magnetic assembly, and a voice coil, is provided. The damping ring is integrally connected to the paper cone. The damping ring has a first side edge and a second side edge opposite to each other, and the first side edge is connected to the paper cone. The damper has an inner edge and an outer edge. The outer edge abuts against the second side edge of the damping ring. The magnetic assembly abuts against the inner edge of the damper. The paper cone, the damping ring, the damper, and the magnetic assembly define a space. The voice coil is disposed in the space and abuts against the paper cone.

A support frame for a thin mini speaker structure thinner than 10 mm includes a main body having a fixing hole, into which a magnet assembly is mounted to locate below a voice coil; two electrically conductive members disposed on the main body; two lead wire holders disposed on the main body between the fixing hole and the electrically conductive members and each defining a lead wire receiving groove thereon; a first damping colloid applied into the lead wire receiving grooves. Two lead wires of the voice coil are set in the first damping colloid in the lead wire receiving grooves and the electrically conductive members to respectively present an outward curved shape. A thin mini speaker lead wire assembling method is also introduced. With the above support frame and method, two ends of the voice coil windings can be directly used as lead wires to save additional tinsel leads.

A support frame for a thin mini speaker structure thinner than 10 mm includes a main body having a fixing hole, into which a magnet assembly is mounted to locate below a voice coil; two electrically conductive members disposed on the main body; two lead wire holders disposed on the main body between the fixing hole and the electrically conductive members and each defining a lead wire receiving groove thereon; a first damping colloid applied into the lead wire receiving grooves. Two lead wires of the voice coil are set in the first damping colloid in the lead wire receiving grooves and the electrically conductive members to respectively present an outward curved shape. A thin mini speaker lead wire assembling method is also introduced. With the above support frame and method, two ends of the voice coil windings can be directly used as lead wires to save additional tinsel leads.

An electro-acoustic transducer includes an accordion-type structure that functions as both an acoustic radiation element and an acoustic seal. In one example, the transducer includes parallel, accordion-type structures that attach to a flat, rectangular diaphragm. The diaphragm is connected to a voice coil. The voice coil and an associated frame are positioned between a magnet arrangement. The magnet arrangement includes stacked magnet pairs positioned between pole pieces to focus magnetic flux.

A passive radiator structure includes an integrally formed diaphragm structure and a surround suspension. The diaphragm structure includes a diaphragm, a frame, and a web-like spider having a plurality of suspension arms integrally extended to between the diaphragm and the frame. The surround suspension has a radially inner gluing edge adhered to a radially inner location of the diaphragm structure around the diaphragm, and a radially outer gluing edge adhered to a radially outer location of the diaphragm structure around the frame. The surround suspension and the web-like spider of the diaphragm structure form two suspension elements for stably supporting the diaphragm, enabling minimized irregular shaking and reduced weight of the diaphragm, as well as reduced sound distortion, increased compliance and upgraded efficiency of the passive radiator structure.

A vibrating element including a diaphragm, a voice coil and a stiffening layer is provided. The diaphragm has a first surface and a second surface opposite to each other. The first surface includes a first conductive region and a second conductive region. The voice coil is disposed on the first surface. Two ends of the voice coil are electrically connected to the first conductive region and the second conductive region. The stiffening layer is disposed on the diaphragm. The diaphragm has a center region, which is enclosed and circled by the voice coil and includes an area of the diaphragm above the voice coil. The region outside the center region includes an inner circled zone and an outer circled zone surrounding the inner circled zone. At least one end of the voice coil is located in the inner circled zone and the stiffening layer covers the inner circled zone.

A passive radiator structure includes an integrally formed diaphragm structure and a surround suspension. The diaphragm structure includes a diaphragm, a frame, and a web-like spider having a plurality of suspension arms integrally extended to between the diaphragm and the frame. The surround suspension has a radially inner gluing edge adhered to a radially inner location of the diaphragm structure around the diaphragm, and a radially outer gluing edge adhered to a radially outer location of the diaphragm structure around the frame. The surround suspension and the web-like spider of the diaphragm structure form two suspension elements for stably supporting the diaphragm, enabling minimized irregular shaking and reduced weight of the diaphragm, as well as reduced sound distortion, increased compliance and upgraded efficiency of the passive radiator structure.

A speaker in which an end of a magnetic assembly close to the diaphragm has a magnetic gap. A coil is wound around a coil former, and at least a portion of the coil is located in the magnetic gap. A connecting member is arranged on a side of the coil former close to a side wall of the accommodating cavity. An annular first damper is arranged between the coil former and the connecting member. The first damper is close to an upper end of the coil and is distal from a lower end of the coil. An annular second damper is arranged between the connecting member and the side wall of the accommodating cavity. The second damper is close to the lower end of the coil and is distal from the upper end of the coil.