Patent application number | Description | Published |
20080226116 | Diaphragm and Loudspeaker Using Same - Diaphragm ( | 09-18-2008 |
20080240488 | Speaker - There is disclosed a small-size speaker in which distortion is not easily caused when a diaphragm vertically movers for sound reproduction. The speaker includes: a bottom-equipped cylindrical frame having an opening at the top; a magnetic circuit arranged on the inner bottom of the frame; a voice coil whose coil portion is arranged in a magnetic gap of the magnetic circuit; a diaphragm arranged at the opening of the frame and its inner circumference is fixed to the voice coil while its outer circumference is fixed to the frame via a first edge; and a support body having one end fixed to the side of the diaphragm having the magnetic circuit and the other end fixed to the vicinity of the magnetic circuit via a second edge. The first edge has a shape substantially similar to the shape of the second edge with respect to the boundary between the first edge and the second edge. | 10-02-2008 |
20080317275 | Speaker Damper and Speaker Using the Same - Speaker damper ( | 12-25-2008 |
20090022355 | LOUDSPEAKER - A high efficiency loudspeaker without a damper is provided. The loudspeaker includes magnetic circuit having a magnetic gap and a voice coil member, which has movable coil, disposed in the magnetic gap of the magnetic circuit. The loudspeaker also includes a diaphragm, whose inner peripheral part is linked with the voice coil member, outside the magnetic gap and a frame linked with an outer peripheral part of the diaphragm via a first edge. An inner peripheral part of a suspension holder is linked with the voice coil member at a linked position which is closer to the magnetic circuit than a linked position of the diaphragm and the voice coil member. An outer peripheral part of the suspension holder is linked with a frame via a second edge. The first edge and the second edge are substantially symmetrical with each other about a median of a first edge and a second edge. | 01-22-2009 |
20090060252 | LOUDSPEAKER - A loudspeaker has a frame, a magnetic circuit, a voice coil body, a first edge, a diaphragm, a second edge, and a damper. The magnetic circuit is provided with a magnetic gap, and is supported by the frame. The voice coil body is disposed movably with respect to the magnetic gap. The outer peripheral end of the diaphragm is coupled to the frame via the first edge, and the inner peripheral end thereof is coupled to the voice coil body. The second edge is coupled to the frame at a position closer to the magnetic circuit than the first edge. The damper is disposed closer to the magnetic circuit than the diaphragm, the outer peripheral end thereof is coupled to the frame via the second edge, and the inner peripheral end thereof is coupled to the voice coil body. | 03-05-2009 |
20090080685 | SPEAKER - A speaker having smaller distortion and driven at higher efficiency is disclosed. The speaker includes a frame, a magnetic circuit supported by the frame, a voice coil unit placed movable with respect to magnetic gap provided to the magnetic circuit, a diaphragm of which outer rim is coupled to the frame via a first edge, and of which inner rim is coupled to the voice coil unit, and a damper placed on the magnetic circuit side with respect to the diaphragm, and which damper has an outer rim coupled to the frame and an inner rim coupled to the voice coil unit. The outer rim of the damper is coupled to the frame via a second edge, which includes a first protrusion protruding toward the diaphragm and a second protrusion protruding oppositely to the first protrusion. | 03-26-2009 |
20090116680 | LOUDSPEAKER - Loudspeaker has frame, magnetic circuit, voice coil, diaphragm, first combination and second combination. First combination and second combination are both provided closer to magnetic circuit than diaphragm, the inner rims of which are connected to voice coil while the outer rims are to frame. First combination has first damper and first edge wherein first edge has first edge protrusion protruding in a direction toward diaphragm. Second combination has second damper and second edge wherein second edge has second edge protrusion protruding in an opposite direction to the protruding direction of first edge protrusion. This structure obtains loudspeaker that distortion is suppressed and weight reduction is easy for an excursion part thus improved in driving efficiency. | 05-07-2009 |
20090232344 | Speaker - The frame of a speaker is divided into a first frame part and second frame part. The outer circumferential edge of the suspension holder is sandwiched between the surfaces of the first and second frame parts. This structure can reduce rolling of the diaphragm and harmonic distortion of the speaker. | 09-17-2009 |
20090262971 | Speaker - An uncured fluid adhesive is charged into a groove surrounding the outer circumference of a voice coil so that the inner circumferential edge of a diaphragm is immersed in the adhesive. The cured adhesive securely bonds the diaphragm to the voice coil, and thus the diaphragm can be driven at high output. | 10-22-2009 |
20120263339 | SPEAKER - A damper, which is an element of a speaker and suppresses the rolling of a voice coil unit, includes a corrugated structure portion at its inner periphery and a leaf spring at its outer periphery. By coupling the corrugated structure portion to the voice coil unit and coupling the leaf spring to the frame, the distortion of a speaker can be reduced and the driving efficiency can be improved. | 10-18-2012 |