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Patent Searching and Data


Matches 351 - 400 out of 1,365

Document Document Title
JP2011040933A
To provide an earphone with a good efficiency with sound waves being efficiently propagated by contriving to reduce an air resistance of a sound conductive tube extending from a housing.The earphone includes: a driver unit 2 for driving ...  
JP2011030013A
To provide a thin moving-magnet type speaker by providing a quantitative guideline about a weight of a magnetic circuit and by suppressing an increase in inductance while sustaining a magnetic flux density of a voice coil.The moving-magn...  
JP2010178376A
To provide a method of improving an electro-dynamic planar speaker and a method of manufacturing the electrio-dynamic planar speaker.The electro-dynamic speaker typically includes a diaphragm plate having a conductor stucked to one of su...  
JP4448992B2  
JP4447356B2  
JP4433969B2  
JP2010505366A
The present invention provides a method and a device for an audio tolan スデュ * sir. An audio tolan スデュ * sir is excited by driving a paddle of a diaphragm. A plurality of node fields of a paddle are determined for a higher mod...  
JP4412495B2  
JP2010028813A
To improve the utilization ratio of an earphone with respect to magnetic energy.An earphone comprises a casing, a magnetic field system and a vibration system disposed in the casing. The magnetic field system includes a magnet and a coil...  
JP2009267779A
To provide an electromagnetic electro-acoustic transducer which has a configuration different from that of an electro-acoustic conversion means of a conventional speaker and can make the outer shape of a speaker sufficiently slender.In t...  
JP4276315B2  
JP4260333B2  
JP4244759B2  
JP4210677B2  
JP2009010709A
To solve problems that a high current flows in a flexible and conductive thin wire used for a moving coil, and then the wire is disconnected or deformed caused by heat generation in a speaker.An electric acoustic converter, such as a spe...  
JP2008252872A
To reduce a parasitic magnetic path in a movable armature container which vibrates an armature with an electric signal supplied to a coil by setting the armature in a magnetic field of one or more coils.Disclosed is the movable armature ...  
JP2008252871A
To provide a movable armature container which vibrates an armature with an electric signal supplied to a coil by setting the armature in a magnetic field of one or more magnets.Disclosed is the compact movable armature container which ha...  
JP2008199336A
To provide a ribbon microphone unit that can be easily exchanged while surely maintaining electrical connection between the ribbon microphone unit and wiring with the primary side of a step-up transformer, and a ribbon microphone.The rib...  
JP2008167247A
To prevent disconnection of lead wire for supplying a signal to a coil, to reduce leak magnetic fluxes and to raise radiation nature.This voice coil motor M1 is a movable magnet type voice coil motor having a stator 21 and a moving membe...  
JP4118863B2  
JP2008125051A
To provide an acoustic transducer for improving a conventional balanced version pendulum type fault.The acoustic transducer includes, within a casing (300), a diaphragm (350) at least a portion of which is constituted of magnetically per...  
JP4091006B2  
JP4080870B2  
JP4073382B2  
JP4037409B2  
JP4030056B2  
JP4006391B2  
JP2007074499A
To provide an electroacoustic transducer in which reduction of output sound pressure and rise of distortion ratio are hard to occur even when it is influenced by an excess external impact by improving shock resistance.In the electroacous...  
JP3870949B2
To prevent deterioration of tone quality in an inverse cone type speaker system. In the speaker system 1, a conic shape cone paper 2 is attached to a frame 3 in a convex shape. A bobbin 8 with a voice coil 9 is fixed to the cone paper 2....  
JP2006319595A
To provide a method of manufacturing a ribbon microphone by which the tension of a ribbon type diaphragm can be adjusted with uniform quality without the need for a skill and the vibrating state of the ribbon type diaphragm can easily be...  
JP3844641B2
To provide an electric/acoustic converter capable of surely fixing a frame and a housing by laser welding, A diaphragm unit part 3 is provided with a diaphragm frame 51, a diaphragm 52, and a resin film 53. The diaphragm 52 is arranged i...  
JP2006304295A
To provide a loudspeaker with low-frequency oscillation capable of emitting sound whose frequency is relatively low and improving the acoustic effect of earphones.In a housing 21, a ring portion 211 is formed by extending the bottom inwa...  
JP3822600B2  
JP3808951B2
To improve the resonance effect of a diaphragm by specifying the thickness of the diaphragm in a machine in which a vibrator is attached to the diaphragm, the vibrator is driven by an ultrasonic wave generator. In an ultrasonic cleaning ...  
JP2006186615A
To enhance shock resistance at the intermediate part of a frame which cantilevers an armature while keeping compact configuration of an electric oscillation transducer of balanced armature type.The gap between the rear surface wall 32a o...  
JP2006157753A
To improve reliability by making the holding strength of a magnetic circuit portion ample.In a sub-panel 3 serving as the enclosure of a magnetically driven actuator, an external cylinder 3a is connected to an internal cylinder 3b in the...  
JP2006060851A
To provide a method for improving and manufacturing an electro-dynamic planar loudspeaker.The electro-dynamic loudspeaker typically includes a diaphragm having a conductor applied to one of its surfaces. The diaphragm is secured to a fra...  
JP3749662B2  
JP2006054917A
To improve an electrodynamic type planar speaker, and to provide a method for manufacturing the electrodynamic type planar speaker.The electrodynamic type speaker typically includes a diaphragm having a conductor applied to one of surfac...  
JP3747361B2
To provide an electromagnetic acoustic transducer that can reduce a stress applied to a coil wire and ensure high reliability. The electromagnetic acoustic transducer 1 consists of a base 24 made of a magnetic material, a magnetic core 2...  
JP2006050665A
To improve an electrodynamic type planar loudspeaker, and to provide a method for manufacturing the electrodynamic type planar loudspeaker.The electrodynamic type loudspeaker typically includes a diaphragm, having a conductor applied to ...  
JP2006041768A
To provide an electroacoustic transducer which has enhanced anti-shock performance and therefore hardly undergoes a change in an output sound pressure and a distortion factor even when receiving an external shock.In the electroacoustic t...  
JP2006042021A
To provide a compact and easily easy-to-handle speaker for a helmet by which sound can be heard even under a noisy environment.A movable device 3 is oscillated by converting an electric signal obtained from a sound source into oscillatio...  
JP2006033787A
To provide a bone conduction device, which can be mounted efficiently, without generating dead spaces, when having a limited installation space, such as a cellular phone case having a large display screen, and a tympanum for such bone co...  
JPWO2004030406A1
ダイヤフラムの表面積をできるだけ大きくし つつ、組立が容易で信頼性の向上が図れる電 気音響変換器を提供する。ケース1とカバー 2により枠部材3を挟持してハウジング...  
JP2006500887A
a [subject] -- the polarity of the signal supplied to a magnetic body is controlled, and the drive mechanism which used the magnetic body as a driving source for making a driver drive is offered. [Solution means] Drive mechanism is equip...  
JP2005286984A
To provide a speaker for mobile terminal capable of realizing high sound quality after establishing wide frequency characteristics and good high frequency distortion characteristics.The speaker includes a frame having a side wall with a ...  
JP2005277868A
To provide a speaker device etc. having an attaching structure of a resin frame and a resin grill in which no looseness due to a change in environment such as temperature change is generated.The speaker device is provided with the resin ...  
JP2005269328A
To provide a loudspeaker apparatus adopting the support structure of a damper, whereby a contact or the like between a vibration system and a magnetic circuit system is prevented so as to prevent the occurrence of abnormal sound noise, w...  
JP2005269330A
To provide a loudspeaker apparatus capable of efficiently radiating heat produced in a voice coil or the like so as to prevent exfoliation or the like of an adhesive for fixing a connection member to various components of the loudspeaker...  

Matches 351 - 400 out of 1,365