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Document Title |
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7606386 |
Vibration actuator
A vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed...
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7593540 |
Electroacoustic transducer and magnetic circuit unit
An electroacoustic transducer has a magnetic circuit unit including a plate-shaped yoke, first and second magnets juxtaposed on the yoke, and first and second top plates mounted on the respective...
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7587060 |
Speaker device
In a speaker device, each inner peripheral edge portion of a conductive damper and an ordinary damper is fixed to an area in the vicinity of a lower end of a cylindrical portion of a connecting...
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7570779 |
Speaker
In a speaker having a magnet circuit causing vibrations of a diaphragm and attached to and supported on a frame, a plurality of projections is formed on a bottom portion of the frame supporting the...
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7561705 |
Reduction of flux leakage in a dynamic microphone
Leakage flux is reduced particularly in a magnetic gap of a magnetic circuit to improve the sensitivity of a dynamic microphone. A dynamic microphone including a magnetic circuit unit 20 ...
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7539318 |
Speaker unit, method for fabricating the same, and speaker apparatus
A speaker apparatus is configured such that a speaker unit including a single magnetic circuit system, a plurality of vibration systems and a case is housed inside a speaker box. In the speaker...
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7532737 |
Loudspeakers, systems, and components thereof
Improved loudspeakers, systems and components are adapted to interconnect with many forms of communication media. In one embodiment, a speaker is mountable within a receptacle. The speaker includes...
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7529381 |
Multifunction-type vibration actuator and portable communication equipment
A multifunction vibration actuator is disclosed, which includes a housing ( 1 ) integrally formed with a first house part ( 1 a ) with an elliptic wall ( 10 ), a second house part ( 1 b ) having a...
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7519191 |
Loudspeaker, manufacturing method thereof, and mobile telephone using the same
A loudspeaker used mainly for mobile communication equipment such as a mobile telephone and having two loudspeaker parts provided in one frame is provided. In the loudspeaker, a yoke has a groove...
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7508953 |
Loudspeaker and components for use in construction thereof
A loudspeaker and components for use in the construction thereof is provided. In one aspect, the present invention relates generally to a new type of loudspeaker comprising a driver having a sound...
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7477757 |
Dual-gap transducer with radially-charged magnet
An electromagnetic transducer such as an audio speaker, having a multi-gap geometry in which there are two or more magnetic air gaps over which magnetic flux flows in a same radial orientation. The...
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7457429 |
Laminated motor structure for electromagnetic transducer
An electromagnetic transducer such as an audio speaker having at least one of the soft magnetic components of its motor assembly constructed as a laminated structure of electrically insulated...
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7443995 |
Acoustic loudspeaker
An acoustic driver has a voice coil in which adjacent turns of the coil are spaced apart. The driver is placed at one end of a foam-lined, elongated structure, such as a tube. An opposing end of...
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7433487 |
Speaker
A speaker includes a magnet, a yoke, and a coil. A surface of the magnet opposed to the yoke includes a first magnetized surface at one side in the moving direction of the coil and a second...
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7418108 |
Transducer for tactile applications and apparatus incorporating transducers
The disclosed transducer the can transfer an audio signal into a full-spectrum tactile wave over a frequency of 10 Hz-2 KHz. Upper and lower springs of the transducer produce vibrations via a...
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7412071 |
Low-inductance electromagnetic drive without driving the magnetic flux circuit
The present invention relates to a low-inductance electromagnetic drive without driving magnetic flux circuit, which comprises a magnetic pole, a drive coil, an upper magnetic inductive board, a...
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7400740 |
Core cap for loudspeaker
A core cap or top plate for use with loudspeakers that includes offset adhesive control grooves on the opposite faces of the disk-like core cap is disclosed. The grooves are offset from one another...
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7388964 |
Loudspeaker, and module and electronic apparatus using the loudspeaker
A loudspeaker is provided that satisfies requirements for both a small size and a high sound pressure. In addition, the heat capacity of the magnetic circuit and the heat dissipation of the voice...
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7386144 |
Inertial voice type coil actuator
The present invention provides an intertial-type voice actuator that includes a magnetic flux conductive material core with a continuous channel. The channel has antifringing groove. The actuator...
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7382893 |
Loudspeaker with inverted cone
The movable structure of a loudspeaker is configured to include a bridging element that connects the base of a diaphragm to an electromagnetic actuator. The bridging element extends radially with...
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7321664 |
Receiver having an improved bobbin
A receiver is disclosed for use in listening devices, such as hearing aids. The receiver comprises an electromagnetic drive assembly that includes a bobbin having a coil of conductive wire formed...
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7319771 |
Vibrator for bone conducted hearing aids
A vibrator for a bone conduction type hearing aid device. The vibrator includes a coil for generating a dynamic magnetic field and two permanent magnets for generating a static magnetic field. The...
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7302077 |
Electromagnetic driver for a planar diaphragm loudspeaker
The invention relates to an electromagnetic driver comprising a soft magnetic core in the form of an E with three legs and a back, an alternating field driver, magnetically coupled to the soft...
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7302076 |
Low profile speaker and system
A speaker has a magnet structure mounted ahead of the speaker diaphragm to produce a shallow compact unit. The magnet structure defines a flux gap, and a voice coil residing in the flux gap is...
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7289642 |
Audio speaker
An audio speaker has a T-yoke, a solenoid, a voice coil, a cone paper, a magnet, a gasket, a basket, a terminal, a damper and a wire. The T-yoke has a bottom disk and a pole formed on the bottom...
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7283642 |
Moving-coil electrodynamic motor for a loudspeaker, loudspeaker and pole piece
The invention relates to a moving-coil electrodynamic motor and a loudspeaker. A moving-coil includes a winding with a given number of turns. A motor comprises a magnet arranged between a front...
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7277555 |
Electroacoustic transducer with built in transducer circuit
In an electroacoustic transducer ( 1 ), an annular shaped magnet system ( 14 ) is provided, enclosing an inner space ( 22 ), in which inner space ( 22 ) an integrated circuit ( 31 ) is...
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7254248 |
One-magnet rectangular transducer
An electroacoustic transducer comprising a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap there between, the magnetic circuit comprising one...
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7248714 |
Micro-speaker and method for assembling a micro-speaker
The micro-speaker includes a driver unit having a housing, a magnet disposed within the housing forming a radial gap between the magnet and the circumferential walls of the housing, and a magnetic...
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7246425 |
Method of manufacturing a speaker
In manufacturing a speaker, ultrasonic complex vibration welding is applied at least to: a process of fixedly putting together a magnet, a pot yoke a the pole piece; a process of fixing, to a...
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7242787 |
Electromagnetic driving unit for a loudspeaker assembly
An electromagnetic driving unit includes a magnet part and a coil part that is translatable along a translation axis with respect to the magnet part. A diaphragm extends from the coil part in a...
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7236609 |
Electro-acoustic transducer with resistance to shock-waves
A transducer comprising a pair of spaced magnets at least partially forming a tunnel having a central axis. A coil having a first and a second side wall and an upper and a lower wall at least...
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7231058 |
Electroacoustic transducer and electronic apparatus
In an electroacoustic transducer of the present invention, a casing supports a diaphragm, a drive coil is provided on the diaphragm, a first magnetic structure has a first space in a center thereof...
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7231057 |
Multi-function actuator capable of preventing vibration
The present invention relates to a multi-function actuator, in which a voice coil vibrates a sound-generating diaphragm in response to an audio signal. A vibration coil is placed on a central axis...
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7227970 |
Shorting ring fixture for electromagnetic transducer
An electromagnetic transducer such as an audio speaker, having a motor structure in which a shorting ring that sinks eddy currents also serves as a permanent fixture to provide coaxial alignment of...
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7224817 |
Loudspeaker
A loudspeaker of the present invention includes a diaphragm; a voice coil for driving the diaphragm; and a magnetic circuit including a yoke, a magnet provided on the yoke, and an upper plate...
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7212647 |
Vibration actuator device of portable terminal
By having multiple air passage holes 10 c in the housing 1 and by creating a clearance G 2 between the outer surface of the yoke 20 and the inner surface of the housing 1, the measurement...
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7200241 |
Loudspeaker
A speaker includes a substantially rectangular case having connection terminals at corners, a substantially rectangular voice coil, a diaphragm, and a substantially rectangular magnetic circuit. A...
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7197155 |
Magnet assembly for loudspeakers
A magnet assembly having inner and outer yokes of magnetic flux conductive material which together define an annular air gap and a radially oriented magnet sandwiched between the inner and outer...
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7187779 |
Electromagnetic transducer and portable communication device
An electromagnetic transducer includes a magnetic member, a suspension for supporting the magnetic member at a central portion of the suspension, a diaphragm connected to the suspension, a magnet...
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7184567 |
Thin speaker and method of manufacturing the speaker
A thin speaker having a magnetic circuit ( 2 ) disposed at the front of a cone-like diaphragm, wherein an internal magnetic type magnetic circuit ( 2 ) and a vibration system are supported by a...
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7181041 |
Flat speaker of full-face driving
Ring magnets ( 5 ) are concentrically placed with certain spacings ( 6 ) on a magnetic frame ( 4 ). The magnetic members on the magnets ( 5 ) are removed, and the magnets are arranged so that the...
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7177440 |
Electromagnetic transducer with asymmetric diaphragm
An electromagnetic transducer such as an audio speaker which includes an asymmetric diaphragm to deliver smooth frequency response with reduced distortion by reduction of common modes in the...
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7164777 |
Speaker driver with detachable motor and basket
A speaker driver has a detachable motor and basket to allow attachment or separation of the motor assembly from the basket assembly. Two embodiments are disclosed, a thread-on detachable motor and...
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7149323 |
Speaker
A speaker comprising: a magnetic circuit provided with a through hole, and a recess formed around the through hole for retaining a magnetic fluid. The speaker further comprises a bearing provided...
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7149322 |
Magnetic circuit for loudspeaker and loudspeaker comprising it
A magnetic circuit of the present invention uses a yoke, wherein a thickness of a bottom portion 10 b of the yoke 10 is thicker than a thickness of a cylindrical peripheral portion 10 a of...
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7142687 |
Electroacoustic converter
An electroacoustic transducer 20 , such as a speaker, a headphone, an earphone, a microphone, an acoustic wave sensor, etc., includes magnet plates 21 and 22 , the entirety of which are formed...
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7142685 |
Adjustable loudspeaker
A loudspeaker motor structure uses variable geometry to change the effective magnetic field acting on the voice coil of the motor structure. A magnet generates the magnetic field, which couples...
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7130441 |
Speaker system having processing circuitry
A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects from the front side of the weight is joined to the rear side of a center pole of the...
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7120271 |
Internal magnetic circuit and loudspeaker system incorporating the same
An internal magnetic circuit is formed by a plate forming a pole piece, a vertically magnetized magnet attached to a bottom face of the plate, and a yoke attached to a bottom face of the magnet. A...
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