Patent application number | Description | Published |
20080212800 | Diaphragm for Speaker, Method for Producing Same, Speaker Using Such Diaphragm, and Apparatus Using Such Speaker - A diaphragm for a loudspeaker contains resin, aramid fibers, and an organic silicon compound binding the resin with the aramid fibers. By this structure, high elasticity and high internal loss as characteristics of the aramid fibers are maintained; flexibility in the setting of properties of the diaphragm is thus increased. Accordingly, a diaphragm securing humidity resistance reliability and strength, and having a superior appearance can be provided. | 09-04-2008 |
20090010471 | LOUDSPEAKER DAMPER, MANUFACTURING METHOD THEREOF, AND LOUDSPEAKER AND ELECTRONIC DEVICE USING THE SAME - A loudspeaker damper, a manufacturing method thereof, and a loudspeaker, electronic equipment and device using the loudspeaker damper. The damper has flexibility. Therefore, even if a large input is applied and the damper oscillates with a large amplitude, a resin layer provided on the surface of the damper base material is not cracked due to partial interface peeling. Thus, the damper follows such a large amplitude and realizes high input-resistance. This loudspeaker damper material is obtained by impregnating a material with thermosetting resin including 2 to 20 wt % of flexibility imparting agent and heat-curing thereof. | 01-08-2009 |
20090028373 | PLANT FOR PRODUCTION OF PAPER-MADE PART FOR SPEAKER, PAPER-MADE PART FOR SPEAKER PRODUCED THEREBY, AND SPEAKER UTILIZING THE SAME - The production equipment of paper-made components for loudspeakers includes a mixing device, a fining device, a paper-making device, and a shape processing device. The mixing device mixes material of a paper-made component for a loudspeaker into liquid to generate mixed liquid. The fining device includes a pressure unit, an orifice, and an inner wall. The pressure unit applies pressure on the mixed liquid to cause the mixed liquid to pass through the orifice, and the mixed liquid collides against the inner wall to cause the fining device to generate fined material. The paper-making device paper-makes the fined material to generate a paper-made component. The shape processing device processes the shape of the paper-made component. This structure provides production equipment of the paper-made components for loudspeakers, which prepares material for paper-making in a short time and reduces producing time. | 01-29-2009 |
20090080687 | SPEAKER DIAPHRAGM, SPEAKER DUST CAP, SPEAKER SUB-CONE, SPEAKER USING THESE COMPONENTS, AND ELECTRONIC APPARATUS USING THE SAME - A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers obtained from a bamboo tree aged one year or older, of which the fibers are finely beaten to an extent of micro-fibrillated form. The diaphragm and the dust cap are also made with a beaten paper containing at least 2 wt % of “A fibers” having stems of no greater than 30 μm in diameter, and surfaces of the stems are fibrillated into shaggy branches having diameters of 1 μm or less. | 03-26-2009 |
20090116682 | Speaker and Method of Manufacturing the Same - Provided is a loudspeaker using a resin with adhesiveness as a surface treatment agent that has already been applied onto either of a diaphragm and a voice coil before bonding. Because this structure can reduce the weight of an adhesive agent used for bonding the diaphragm to the voice coil, a sound pressure level can be improved. | 05-07-2009 |
20100027826 | MANUFACTURING METHOD OF PAPER MAKING PART FOR LOUDSPEAKER, PAPER MAKING PART FOR LOUDSPEAKER, DIAPHRAGM FOR LOUDSPEAKER, SUB CONE FOR LOUDSPEAKER, DUST CAP FOR LOUDSPEAKER AND LOUDSPEAKER - A manufacturing method of a paper making part for a loudspeaker has freedom of adjusting a characteristic and a sound quality, and has a higher productivity. Accordingly, a fibrillating step of a paper making material is achieved by an explosive crushing step. Alternatively, the step is achieved by a mixing step of a paper making material and a liquid, a material micro-fabricating step of applying a pressure to a mixed solution obtained by the mixing step so as to pass through an orifice and thereafter run into a device wall, and a paper making step including the micro-fabricated material. | 02-04-2010 |
20100059309 | DIAPHRAGM FOR SPEAKER, FRAME FOR SPEAKER, DUST CAP FOR SPEAKER, SPEAKER AND APPARATUS USING THEM, AND METHOD FOR MANUFACTURING COMPONENT FOR SPEAKER - A speaker diaphragm is configured by a compound mixed with resin and bamboo fiber. The diaphragm satisfying the advantage of the bamboo fiber of high sound quality and a large degree of freedom in the setting of the characteristic value of the diaphragm and the advantage of the diaphragm made of a resin with improved humidity resistance reliability and strength, excellent external appearance, and enhanced productivity and dimension stability is obtained. | 03-11-2010 |
20100150389 | SPEAKER, SPEAKER DEVICE USING THE SAME AND ELECTRONIC APPARATUS AND VEHICLE USING THE SPEAKER - According to the present invention, there is provided a speaker for use in audio/video apparatuses and a small-sized speaker device capable of realizing preferable reproduction a bass sounds. In order to attain this, in the present invention, a pressure adjusting body is coupled to a portion of a magnetic circuit or a frame, which is a component of a speaker unit, to constitute the speaker unit. The speaker unit is mounted to a small-sized cabinet to constitute a speaker device, which enables realization of preferable reproduction of bass sounds. | 06-17-2010 |
20100172520 | ASSEMBLING METHOD OF SPEAKER AND ELECTRONIC APPARATUS EMPLOYING THAT SPEAKER - A voice coil wound to have a loop having an inner side is fixed to a diaphragm vibrating in a vibration direction. A first magnet having a first pole surface is fixed to an upper case. A second magnet having a second pole surface is fixed to a lower case. A first magnetic fluid is attached to the first pole surface of the first magnet after fixing the first magnet to the upper case. The diaphragm is fixed to the upper case after fixing the voice coil to the diaphragm and after attaching the first magnetic fluid to the first pole surface of the first magnet, such that the first pole surface of the first magnet faces the inner side of the voice coil and that the first magnetic fluid is provided between the first pole surface of the first magnet and the voice coil and contacts the first pole surface and the voice coil. | 07-08-2010 |
20100177928 | SPEAKER AND ELECTRONIC APPARATUS EMPLOYING THE SAME - A loudspeaker includes a diaphragm, a voice coil fixed to the diaphragm, a first magnet having a first pole surface facing an inner side of the voice coil, a second magnet located inside the inner side of the voice coil, and a first magnetic fluid provided between the first pole surface of the first magnet and the voice coil. The first magnet has the first pole surface facing the inner side of the voice coil. The second magnet has a second pole surface located inside the inner side of the voice coil such that a magnetic flux passing through the first pole surface of the first magnet crosses the voice coil in a direction perpendicular to the voice coil and a vibration direction. The first magnetic fluid contacts the first pole surface and the voice coil. The loudspeaker has a small thickness but can produce a high audio output, while preventing rolling. | 07-15-2010 |
20110007922 | SPEAKER DIAPHRAGM, SPEAKER, AND ELECTRONIC EQUIPMENT AND MOBILE DEVICE USING THE SPEAKER - A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality. | 01-13-2011 |
20110007931 | SPEAKER DIAPHRAGM, SPEAKER, AND METHOD FOR MANUFACTURING SPEAKER DIAPHRAGM - A speaker diaphragm of the present invention is molded by paper-making molding, using not smaller than 5 wt % of fibers extracted from at least bamboo leaves. It is thereby possible to improve the rigidity of the speaker diaphragm, so as to realize a speaker diaphragm with low environmental load, reducible cost and high sound quality. | 01-13-2011 |
20120112382 | DIAPHRAGM FOR SPEAKER, FRAME FOR SPEAKER, DUST CAP FOR SPEAKER, SPEAKER AND APPARATUS USING THEM, AND METHOD FOR MANUFACTURING COMPONENT FOR SPEAKER - A speaker diaphragm is configured by a compound mixed with resin and bamboo fiber. The diaphragm satisfying the advantage of the bamboo fiber of high sound quality and a large degree of freedom in the setting of the characteristic value of the diaphragm and the advantage of the diaphragm made of a resin with improved humidity resistance reliability and strength, excellent external appearance, and enhanced productivity and dimension stability is obtained. | 05-10-2012 |
20120114149 | DIAPHRAGM FOR SPEAKER, FRAME FOR SPEAKER, DUST CAP FOR SPEAKER, SPEAKER AND APPARATUS USING THEM, AND METHOD FOR MANUFACTURING COMPONENT FOR SPEAKER - A speaker diaphragm is configured by a compound mixed with resin and bamboo fiber. The diaphragm satisfying the advantage of the bamboo fiber of high sound quality and a large degree of freedom in the setting of the characteristic value of the diaphragm and the advantage of the diaphragm made of a resin with improved humidity resistance reliability and strength, excellent external appearance, and enhanced productivity and dimension stability is obtained. | 05-10-2012 |
20120114165 | DIAPHRAGM FOR SPEAKER, FRAME FOR SPEAKER, DUST CAP FOR SPEAKER, SPEAKER AND APPARATUS USING THEM, AND METHOD FOR MANUFACTURING COMPONENT FOR SPEAKER - A speaker diaphragm is configured by a compound mixed with resin and bamboo fiber. The diaphragm satisfying the advantage of the bamboo fiber of high sound quality and a large degree of freedom in the setting of the characteristic value of the diaphragm and the advantage of the diaphragm made of a resin with improved humidity resistance reliability and strength, excellent external appearance, and enhanced productivity and dimension stability is obtained. | 05-10-2012 |
20120145345 | MANUFACTURING METHOD OF PAPER MAKING PART FOR LOUDSPEAKER, PAPER MAKING PART FOR LOUDSPEAKER, DIAPHRAGM FOR LOUDSPEAKER, SUB CONE FOR LOUDSPEAKER, DUST CAP FOR LOUDSPEAKER AND LOUDSPEAKER - A manufacturing method of a paper making part for a loudspeaker has freedom of adjusting a characteristic and a sound quality, and has a higher productivity. Accordingly, a fibrillating step of a paper making material is achieved by an explosive crushing step. Alternatively, the step is achieved by a mixing step of a paper making material and a liquid, a material micro-fabricating step of applying a pressure to a mixed solution obtained by the mixing step so as to pass through an orifice and thereafter run into a device wall, and a paper making step including the micro-fabricated material. | 06-14-2012 |