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JP2003294545A |
To provide a force detection device improved for vibration detection or a filter, or at least for alternative use thereof.This force detection device has an electromagnetic material and a magnetic element capable of moving relatively to ...
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JP3454720B2 |
To provide a receiver with a simple structure and sufficient strength against an external force on a lead piece with a simplified assembling process that can be used the same manufacturing facility even when a slight design change takes ...
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JP2003283896A |
To provide a digital camera having a voice recording function and a voice reproducing function so as to attain downsizing a set comprising a microphone and a speaker and decrease the number of components and the manufacturing cost.The di...
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JP2003274487A |
To solve the problem of a conventional electromagnetic or dynamic electroacoustic transducer that cannot have been downsized because of the permeability and the saturation magnetic flux density of a magnetic diaphragm and a yoke and the ...
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JP2003259485A |
To provide a speaker and a method of manufacturing it.A damper (38) is attached above tinsel cords (48) and by maximizing the size of the damper, the amplitude of the output sound is heightened and a low frequency components are maximize...
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JP2003220363A |
To provide a high performance small-sized portable axially driven vibration body.The axially driven vibration body 10 has a drive element 20 which is formed from the cylindrical drive coil 12 fixed to one side end of a cylindrical frame ...
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JP3427054B2 |
To provide a signal converter of a small-size and a low profile that minimizes the power consumption so as to extend the operating time of a portable phone or a PCS(Personal Communication Service phone) that mounts the signal converter. ...
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JP3421654B2 |
Disclosed is an electric-acoustic transducer comprising at least one fixed coil adapted to generate alternating magnetic field upon externally receiving an electrical drive signal, a frame having a recessed structure for centrally receiv...
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JP2003520007A |
(57) [Summary] The present specification discloses a balanced receiver that significantly reduces vibration. As disclosed herein, this balanced receiver comprises an operably fitted closed loop between the armature and the diagram. The e...
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JP3416815B2 |
To provide a speaker and its manufacturing method by which the productivity can be enhanced and the characteristic can easily be improved. A frame 14 of a speaker 10 is designed to be separated into a 1st frame 15 and a 2nd frame 44 and ...
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JP3373151B2 |
A case is formed by an upper case and a lower case, and a buzzer is provided in the case. Two coil springs are securely mounted in holes formed in the lower case. A lower portion of the coil spring is projected from an underside of the l...
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JP2003032793A |
To provide an acoustic microphone by which a stable output can be obtained even in a hot and humid environment such as an area around steam pipes in a nuclear energy plant.An alternate current theory of a mutual induction circuit is appl...
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JP2003009495A |
To obtain oscillations accompanied by feeling of presence by resonating a cabinet for built-in equipment.An oscillator 3 is formed by combining the first frame assembly and the second frame assembly into one. A magnetic circuit part (a m...
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JP2002541749A |
An electroacoustic transducer employing a polymer connection for maximizing volume displacement. The transducer includes a diaphragm in a case and means for converting. The diaphragm includes a central portion. The means for converting c...
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JP2002271895A |
To provide a magnet of an electromagnetic sounder that is used for a surface mount electromagnetic sounder and solves problems of an insufficient magnetic force of the small sized magnet and a complicated manufacturing method.In the elec...
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JP2002219410A |
To promote realization of a multi-functional type acoustic device that is simple in structure and excellent in heat radiation with which quality of voice and music will not deteriorate even through low and high frequency signals are exci...
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JP3311471B2 |
PURPOSE: To miniaturize and flatten an electromagnetic acoustic transducer with high sound pressure by increasing the winding number of a winding wire at a pole without securing a special space. CONSTITUTION: The winding wire 10 is wound...
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JP2002094630A |
To provide the connection method and structure of the microphone of a mobile communication terminal for easily connecting the microphone and a printed circuit board, reducing the assembly time of products and improving working efficiency...
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JP3255171B2 |
To provide an excellent magnetic acoustic converter with improved shock resistance in a magnetic sound generator used for radiating sound (calling, information, warning, etc.), in various industrial fields. In this magnetic acoustic conv...
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JP2002501358A |
A thin loudspeaker is provided that produces a superior frequency response and a diffuse acoustical pattern using magnetic drivers, acoustical plates, or a combination of magnetic drivers and acoustical plates. The invention contains a s...
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JP2001326994A |
To provide a small electromagnetic-acoustic transducer with high sound pressure which can certainly fix a small magnet while securing a large back surface space of a diaphragm.The electromagnetic-acoustic transducer 1 is composed of: a b...
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JP2001324982A |
To provide an excellent sounder which is used for various moving body communication terminals, etc., and generates calling sounds of a high sound pressure.This sounder is provided with notched parts 13c and 13d in the lower parts on the ...
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JP2001326995A |
To provide a small electromagnetic-acoustic transducer with high sound pressure which can certainly fix a small magnet while securing a back surface space of a diaphragm.The electromagnetic-acoustic transducer 1 is composed of: a base 24...
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JP2001290484A |
To provide an electromagnetic sound producing body with which the vibration characteristics of a diaphragm are stabilized. A groundsel cover 2 and upper cover 3 constituting a casing 1 are united to form a sound releasing hole 1a. A yoke...
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JP2001245390A |
To provide an electroacoustic transducer that can easily fix the drive pin to the diaphragm.The drive pin 41 has a diaphragm side plane 42 nearly in parallel with a diaphragm 52 and an armature side plane section 43 that is extended in a...
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JP2001228874A |
To provide an electric guitar system which allows independent extrac tion of sounds of respective strings, is wide in the width of sound creation and is applicable to guitars of various types.This electric guitar is constituted by mounti...
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JP2001509985A |
An electro-dynamic inertial vibration exciter (1) for exciting a member (2) having capability to sustain and propagate input vibrational energy comprising a motor coil assembly (3, 4) having a coil (3) rigidly fixed to a tubular coil for...
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JP2000193006A |
To provide a highly reliable flat spring-integrated core consisting of a flat spring and an inverted cup-shaped core securely fixed to each other in which the quantity of expensive rubber to be used is reduced, and provide a method of ma...
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JP2000193007A |
To provide a highly reliable flat spring-integrated core which can be manufactured inexpensively and surely positioned and fixed. This flat spring-integrated core consists of an outer circumference ring, a center hole, an inner circumfer...
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JP2000148154A |
To reduce the man-hours in the assembling to a body case and minimize the space factor of a buzzer on a printed board as much as possible. In a buzzer 11 having a substantially cuboid-shaped thin casing 12 incorporating a sounding part, ...
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JPH11331965A |
To reproduce voice information with high sound quality without drilling any hole through a casing by fixing a magnet to the casing having a vibration area capable of vibration via a frame to generate a magnetic field to a voice coil that...
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JP2967777B1 |
A yoke 1 having a center magnetic pole 2 around which a voice coil is wound is provided, the yoke 1 is extended in four directions, magnets 4 are disposed on two parts 7 and 7 facing to each other among the extensions, respectively, and ...
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JP2957698B2 |
This invention relates to coil assemblies and in particular, but not exclusively, to such assemblies for acoustic transducers. Thus a transducer 10 includes a case 11 in which is located a coil 16 mounted on a flexi-circuit, which locate...
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JP2936009B2 |
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JPH11113092A |
To provide an electroacoustic transducer where an excellent spherical sound field at all times is obtained by preventing the generation of an undesired vibration mode caused at a circumferential ridge. In an electrostatic type spherical ...
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JPH10290494A |
To make a diaphragm thin and light in weight, to make it into complicated form, to make it flexible, to improve vibration efficiency, to increase the sound pressure and to expand a frequency range to provide a prescribed sound pressure b...
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JPH10224892A |
To obtain stable acoustic characteristic by executing magnetic processing to resin at the whole pole piece within an electroacoustic transducer or at least an iron core part within the pole piece so as to precisely set a gap between the ...
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JP2749748B2 |
PURPOSE: To enable make possible downsizing by arranging a constitution such that a magnet material which moves in a shifting direction, including an electromagnet consisting of a shell and a winding around a rectilinear shifting path, i...
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JPH1011067A |
To make it possible to cancel noise or a hum effectively without sacrificing sound quality by reduction coupling coils inductively and magnetically with each other by a shield. A lower coil 20 extends to the circumference of magnetic pol...
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JP2632579B2 |
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JPH0993680A |
To suppress the shape change in the microphone caused by addition of a lighting function. A printed circuit board 19 on which light emitting diodes 20 are soldered is fixed while being inserted between a microphone holder 21 and a microp...
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JPH08265403A |
To provide a portable telephone set incorporating a speaker having a flip stand or a door with hinge. A portable telephone set 10 is provided with a telephone set main body having a recess on one side, a flip stand (the flip stand functi...
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JP2500908Y2 |
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JPH08502635A |
This invention relates to electroacoustic transducers which incorporate a reed armature 17. Formations (25, 26, 27, 28 and 29) are provided for mounting the deflection of the reed 17.
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JPH07118835B2 |
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JPH07112317B2 |
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JPH07106336B2 |
An apparatus for effecting a vibrating motion comprises a resonant planar armature, a housing, an electromagnetic device attached to the housing for effecting an alternating electromagnetic field, a magnetic device coupled to the armatur...
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JPH07508864A |
An immersion-resistant housing adapted to receive a vibratable diaphragm spanning the interior of the housing to divide the housing into first and second chambers includes a first port communicating between the first chamber and the exte...
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JPH0731671Y2 |
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JPH0731672Y2 |
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