Abstract: A speaker unit according to an embodiment includes a diaphragm, a frame, and a current plate. The frame supports an outer circumferential portion of the diaphragm. The current plate is provided in the frame so as to be located at a backside of the diaphragm, and its principal surface is arranged in a direction along an amplitude direction of the diaphragm.

Abstract: A speaker unit according to an embodiment includes a diaphragm, a frame, and a current plate. The frame supports an outer circumferential portion of the diaphragm. The current plate is provided in the frame so as to be located at a backside of the diaphragm, and its principal surface is arranged in a direction along an amplitude direction of the diaphragm.

Abstract: A method for identifying a subject of Acropora genus to an Acropora species comprises of detecting one or more microsatellite loci in the genome of the subject, wherein the microsatellite loci are selected from the group consisting of a microsatellite locus 8346m3 and others. A method for quantifying an index of level of chimerism of a coral colony restored by transplanting an Acropora first coral colony of an Acropora species into a second coral colony in need of restoration that belongs to the same species as the first coral colony comprises of identifying one or more microsatellite loci whose PCR fragment size, amplified with genomic DNA derived from the first coral colony as template, is different from the PCR fragment size amplified with genomic DNA derived from the second coral colony.

Abstract: A method for manufacturing an electrolytic capacitor includes preparing a capacitor element that includes an anode body having a dielectric layer, and a separator including a cellulose fiber; impregnating the capacitor element with a first treatment solution containing a first solvent and conductive polymer particles; and impregnating, after impregnating the capacitor element with the first treatment solution, the capacitor element with a second treatment solution containing a second solvent at a state where the capacitor element includes the first solvent.

Abstract: An object is to enhance workability in attachment in a sound generating apparatus that generates sound by vibrating a vibration plate with a vibrator while ensuring acoustic performance as good as that achieved by fastening with fine screw threads. Workability in attaching operation is improved while ensuring acoustic performance as good as that provided by fastening with fine screw threads, by providing first fixing portion that brings engagement portions into screw engagement with each other by rotation by a predetermined angle that can be attained by a user without taking his/her hand that holds a coupler off it and second fixing portion for fixing the coupler to a bracket so as to prevent the coupler from rotating relative to said bracket in a direction to loosen the engagement achieved by said first fixing portion.

Abstract: An object is to enhance workability in attachment in a sound generating apparatus that generates sound by vibrating a vibration plate with a vibrator while ensuring acoustic performance as good as that achieved by fastening with fine screw threads. Workability in attaching operation is improved while ensuring acoustic performance as good as that provided by fastening with fine screw threads, by providing first fixing portion that brings engagement portions into screw engagement with each other by rotation by a predetermined angle that can be attained by a user without taking his/her hand that holds a coupler off it and second fixing portion for fixing the coupler to a bracket so as to prevent the coupler from rotating relative to said bracket in a direction to loosen the engagement achieved by said first fixing portion.

Abstract: A vehicle audio device includes a vibrator (30), a first threaded member (20), a second threaded member (32), and a ring-shaped resilient member (25). The first threaded member (20) includes a tubular portion (22), an external thread (22m) formed on an outer surface of the tubular portion (22), and a flange (24) formed on one end of the tubular portion (22). The resilient member (25) is fitted around the tubular portion (22) of the first threaded member (20) so as to axially oppose the flange (24) of the first threaded member (20). The second threaded member (32) includes a ring-shaped portion (32f) axially opposing the resilient member (25) from the side of the resilient member (25) not opposing the flange (24) of the first threaded member (20). Internal threads (32w) are formed on an inner surface of the ring-shaped portion (32f) and are engageable with the external threads (22m) of the first threaded member (20). The vibrator (30) is mounted to one of the first and second threaded members (20, 32).

Abstract: A flat speaker comprising a vibrating plate including a spiral voice coil, a lead portion extracted from the vice coil and reinforced by the reinforcing member, and an electric supply line; an edge portion supporting the vibrating plate; and a yoke, supporting the edge portion, on which the permanent magnet arranged to face the voice coil. The flat speaker 1 of the invention includes a vibrating membrane 2 of an insulating base film 3 with a spiral or meandering voice coil 4 formed on one or both faces thereof, a permanent magnet 5 arranged on corresponding location facing the voice coil 4; and a yoke 6 on which the permanent magnet 5 is arranged. The vibrating membrane 2 is avoided from hitting the permanent magnet by providing a perforated sheet on the back face of the yoke to control acoustic resistance.

Abstract: An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Abstract: An object is to enhance workability in attachment in a sound generating apparatus that generates sound by vibrating a vibration plate with a vibrator while ensuring acoustic performance as good as that achieved by fastening with fine screw threads. Workability in attaching operation is improved while ensuring acoustic performance as good as that provided by fastening with fine screw threads, by providing first fixing means that brings engagement portions 31 and 41 into screw engagement with each other by rotation by a predetermined angle that can be attained by a user without taking his/her hand that holds a coupler 3 off it and second fixing means for fixing the coupler 3 to a bracket 4 so as to prevent the coupler 3 from rotating relative to said bracket 4 in a direction to loosen the engagement achieved by said first fixing means.

Abstract: A vehicle audio device includes a vibrator (30), a first threaded member (20), a second threaded member (32), and a ring-shaped resilient member (25). The first threaded member (20) includes a tubular portion (22), an external thread (22m) formed on an outer surface of the tubular portion (22), and a flange (24) formed on one end of the tubular portion (22). The resilient member (25) is fitted around the tubular portion (22) of the first threaded member (20) so as to axially oppose the flange (24) of the first threaded member (20). The second threaded member (32) includes a ring-shaped portion (32f) axially opposing the resilient member (25) from the side of the resilient member (25) not opposing the flange (24) of the first threaded member (20). Internal threads (32w) are formed on an inner surface of the ring-shaped portion (32f) and are engageable with the external threads (22m) of the first threaded member (20). The vibrator (30) is mounted to one of the first and second threaded members (20, 32).

Abstract: The present invention is directed to providing a vibro-acoustic system that can be used for an extended period of time by reducing the uncomfortable feeling or sensation of pressure that a user may experience during use. The vibro-acoustic system comprises: a seat having a seatback and a seat proper; a band dividing circuit which produces a first sound signal and a second sound signal by dividing an input sound signal into frequency bands; a first vibrating device which vibrates in accordance with the first sound signal, and which is mounted in the seatback so that the direction of vibration of the first vibrating device is parallel or substantially parallel to the occupant-side surface of the seatback; and a second vibrating device which vibrates In accordance with the second sound signal, and which is mounted in the seat proper so that the direction of vibration of the second vibrating device is parallel or substantially parallel to the occupant-side surface of the seat proper.

Abstract: A flat speaker comprising a vibrating plate including a spiral voice coil, a lead portion extracted from the vice coil and reinforced by the reinforcing member, and an electric supply line; an edge portion supporting the vibrating plate; and a yoke, supporting the edge portion, on which the permanent magnet arranged to face the voice coil. The flat speaker 1 of the invention includes a vibrating membrane 2 of an insulating base film 3 with a spiral or meandering voice coil 4 formed on one or both faces thereof, a permanent magnet 5 arranged on corresponding location facing the voice coil 4; and a yoke 6 on which the permanent magnet 5 is arranged. The vibrating membrane 2 is avoided from hitting the permanent magnet by providing a perforated sheet on the back face of the yoke to control acoustic resistance.

Abstract: A speaker apparatus which does not need insertion of a stand into a speaker box, and which can prevent vibrations occurring in a speaker unit from transmitting to the speaker box by the speaker apparatus itself is provided. Within a speaker box which can be divided into first and second half portions, a plurality of supports extending from a main body portion of a weight radially are fixed at a connecting portion of the speaker box by bolts. A driving portion of a speaker unit is coupled to the main body portion of the weight, and is supported inside the speaker box in a manner that vibrations do not transmit, by the main body portion of the weight acting as a virtual ground. In order to swing the speaker box, a stand and the speaker box are pivotally supported by a pivotally supporting mechanism.

Abstract: An exciter for directly vibrating a board, which enables a sufficient rotational torque to be obtained by a work tool at the time of attachment or detachment, provided with a magnetic circuit unit having an outside yoke comprised of a side wall and a bottom, a permanent magnet fastened to the bottom, and an inside yoke and with a coil inserted into a clearance between the side wall and inside yoke, the magnetic circuit unit being vibratably supported at the coupler member by elastic members, the coupler member being screwed with the bracket member fastened to the surface of the board, two parallel flat surfaces engaging with ends of a work tool being provided at an outer circumference of the outside yoke, and the work tool being turned to attach/detach the coupler member with respect to the bracket member.

Abstract: An exciter for directly vibrating a board, which enables a sufficient rotational torque to be obtained by a work tool at the time of attachment or detachment, provided with a magnetic circuit unit having an outside yoke comprised of a side wall and a bottom, a permanent magnet fastened to the bottom, and an inside yoke and with a coil inserted into a clearance between the side wall and inside yoke, the magnetic circuit unit being vibratably supported at the coupler member by elastic members, the coupler member being screwed with the bracket member fastened to the surface of the board, two parallel flat surfaces engaging with ends of a work tool being provided at an outer circumference of the outside yoke, and the work tool being turned to attach/detach the coupler member with respect to the bracket member.

Abstract: An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration-of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Abstract: A method and apparatus for automatically re-pointing twist drill bits includes a drill support mechanism including means for rotatably and axially translatably holding the shank of a drill bit, and a fluted portion receiver for supporting the fluted front cutting portion of the drill bit. The apparatus also includes an optical sensor unit which views the tip and blade part of the drill bit with the drill support mechanism in an off-line position, i.e., rotated away from a grinding wheel station. Responsive to error correction servo command signals received from a comparison of the actual orientation of drill bit cutting lips with a desired pre-determined template position, rotary and linear actuators in the drill support mechanism rotate the drill bit to the proper angular orientation, and advance the bit axially to a pre-determined protrusion length.