An apparatus includes at least one load and a plurality of armatures, each including a permanent magnet, which are coupled to the at least one load to cause the at least one load to move. The apparatus also includes a common stator that defines an air gap within which the plurality of armatures is disposed. The common stator is configured for creating magnetic flux across the air gap for the armatures to interact with, thereby to drive motion of the at least one load.

A speaker frame, including: a vibration support portion supporting a vibrating body of a speaker; a magnet support portion arranged inside of said vibration support portion and supporting magnetic circuit portion of said speaker; and a plurality of connection beams connecting said vibration support portion and said magnet support portion, wherein the vibration support portion and the magnet support portion have a circular ring shape having the same major axis length and minor axis length, said plurality of connection beams are arranged radially centering on a central axis from said magnet support portion to said vibration support portion, the central axis being parallel to a direction of an acoustic radiation, and a length of one of said connection beams and a length of another connection beams are different from each other.

A speaker frame, including: a vibration support portion supporting a vibrating body of a speaker; a magnet support portion arranged inside of said vibration support portion and supporting magnetic circuit portion of said speaker; and a plurality of connection beams connecting said vibration support portion and said magnet support portion, wherein the vibration support portion and the magnet support portion have a circular ring shape having the same major axis length and minor axis length, said plurality of connection beams are arranged radially centering on a central axis from said magnet support portion to said vibration support portion, the central axis being parallel to a direction of an acoustic radiation, and a length of one of said connection beams and a length of another connection beams are different from each other.

A speaker frame, including: a vibration support portion supporting a vibrating body of a speaker; a magnet support portion arranged inside of said vibration support portion and supporting magnetic circuit portion of said speaker; and a plurality of connection beams connecting said vibration support portion and said magnet support portion, wherein the vibration support portion and the magnet support portion have a circular ring shape having the same major axis length and minor axis length, said plurality of connection beams are arranged radially centering on a central axis from said magnet support portion to said vibration support portion, the central axis being parallel to a direction of an acoustic radiation, and a length of one of said connection beams and a length of another connection beams are different from each other.

Disclosed is a vibration sound-producing apparatus. A sound output aperture of the vibration sound-producing apparatus is provided at a lateral surface. A diaphragm corresponds to the position of the sound output aperture. A flat sound coil is perpendicular to the diaphragm. A magnet is parallel to the sound coil. The vibrating direction of the sound coil avoids a thickness direction. The vibrating direction of the magnet and a mass block also avoids the thickness direction. The mass block is fixedly joined to a housing via a flexible piece. This facilitates reduced product thickness, increased product performance, and a simplified product production process. Therefore, the vibration sound-producing apparatus of the present invention has the advantages of a great thickness-reduced design, great performance, and simple assembly.

A receiver including a housing defining a chamber, and a motor assembly that includes a magnet assembly and an armature. The receiver includes a diaphragm operationally attached to the armature. The motor assembly is attached to the housing by a movable suspension structure. A method of reducing vibrations includes providing a housing defining a chamber, providing a motor assembly including a magnet assembly and an armature, providing a diaphragm, providing a movable suspension structure, attaching the diaphragm to the armature, and attaching the motor assembly to an inner wall of the housing by the movable suspension structure.

The present invention provides for a surface acoustic transducer optimally structured to produce sound within an aircraft cabin by vibrating the interior cabin walls. Specifically, the surface acoustic transducer comprises a primary assembly comprising a voice coil assembly having a voice coil former and wire, and a transducer housing for retaining said primary assembly and a magnet therein such in movable relations. The present surface acoustic transducer may further include a spider structured to provide an improved excursion. An external housing may additionally be provided comprising a rigid retaining wall for protecting the surface acoustic transducer from potential externally applied forces and a malleable excursion cover allowing for an excursion of the primary assembly thereof.

The present disclosure application relates to a transducer, a loudspeaker, and an acoustic output device. The transducer comprises: a magnetic circuit system including a magnet, a magnetic conductive plate and a magnetic conductive cover, the magnet and the magnetic conductive plate being arranged along a vibration direction of the transducer; and a vibration plate including a first vibration plate and a second vibration plate, the first vibration plate or the second vibration plate being fixed on both sides of the magnet along the vibration direction of the transducer, and being configured to elastically support the magnet; wherein a ratio of a thickness of the magnetic conductive plate to a thickness of the magnet is in a range of 0.05-0.35.

The present disclosure application relates to a transducer, a loudspeaker, and an acoustic output device. The transducer comprises: a magnetic circuit system including a magnet assembly and a magnetic conductive cover, the magnetic conductive cover being arranged at least partially around the magnet assembly; and a vibration plate, including a first vibration plate and a second vibration plate, the first vibration plate and the second vibration plate being respectively distributed on both sides of the magnet assembly along a vibration direction of the magnet assembly, and being configured to elastically support the magnet assembly, wherein an equivalent stiffness of the first vibration plate or the second vibration plate in any direction perpendicular to the vibration direction of the magnet assembly is greater than 4.710.sup.4 N/m.

Disclosed is a vibration loudspeaker, comprising a housing, a back lid matching the housing, and a vibration system and a magnetic circuit system in the housing; the housing and the back lid are both square-shaped structures; the four corners of the square-shaped structure of the housing are provided with a recess, and the four corners of the back lid corresponding to the four corners of the housing are provided with a step, such that the back lid and the housing snap together and fix to each other. The vibration loudspeaker of the present invention effectively enhances the firmness of the fitting between the back lid and the housing, thereby enhancing the overall strength of the vibration loudspeaker product of the present invention. The vibration loudspeaker of the present invention has high overall strength, good reliability, and strong shock resistance.