EP1394905A1 - Connecteur pour composant electroacoustique et structure de connexion de ce connecteur - Google Patents

Connecteur pour composant electroacoustique et structure de connexion de ce connecteur Download PDF

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Publication number
EP1394905A1
EP1394905A1 EP02730790A EP02730790A EP1394905A1 EP 1394905 A1 EP1394905 A1 EP 1394905A1 EP 02730790 A EP02730790 A EP 02730790A EP 02730790 A EP02730790 A EP 02730790A EP 1394905 A1 EP1394905 A1 EP 1394905A1
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EP
European Patent Office
Prior art keywords
electroacoustic component
holder
electrodes
conductive
insulative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02730790A
Other languages
German (de)
English (en)
Other versions
EP1394905A8 (fr
EP1394905A4 (fr
Inventor
Kazuhiko Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Polymer Co Ltd
Publication of EP1394905A1 publication Critical patent/EP1394905A1/fr
Publication of EP1394905A8 publication Critical patent/EP1394905A8/fr
Publication of EP1394905A4 publication Critical patent/EP1394905A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
    • H01R13/518—Means for holding or embracing insulating body, e.g. casing, hoods for holding or embracing several coupling parts, e.g. frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads

Definitions

  • the present invention relates to an electroacoustic component connector and its connecting structure for establishing electric conduction between an electroacoustic component such as a microphone, speaker etc., and an electrically joined object such as a circuit board or the like, such as those used in a cellular phone or a mobile terminal (handy PC, PDA, etc.)
  • an electroacoustic component When an electroacoustic component is used for voice communication for a cellular phone or as a confirmation sound generator, the electroacoustic component and the circuit board should be electrically connected.
  • the method of conduction pin terminals and lead wires with soldering connections have been used conventionally. With the recent spread of cellular phones and increased variety of the products thereof, the product life becomes shorter. With this trend, the packaging method of the electroacoustic component is also being reconsidered. As one of such reconsideration, making use of cheap spring terminals is under investigation, from the viewpoint of equipment usage and manufacturing cost.
  • the present invention has been devised in view of the above, it is therefore an object of the present invention to provide an electroacoustic component connector and connecting structure therefor, which allows the electroacoustic component to be used again even when a repair is needed, can deal with miniaturization and reduction in weight of the electrically joined object, and can solve the problems of instability of connection resistance entailing from vibration, fatigue of connecting terminals and unstable connection.
  • the present invention has been devised to achieve the above object and the gist is as follows:
  • the first aspect of the present invention resides in an electroacoustic component connector fitted to an electroacoustic component having electrodes, comprising:
  • the second aspect of the present invention resides in the electroacoustic component connector defined by the first aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted to the electrodes of the electroacoustic component, and the conductive connecting part is constructed of an insulative elastic resin piece provided in the holder and a multiple number of fine conductive wires arranged with a predetermined pitch and embedded in the height direction of the elastic resin piece, so as to be put into contact with the electrodes of the electroacoustic component.
  • the third aspect of the present invention resides in the electroacoustic component connector defined by the first aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted covering or engaged with, the electrodes of the electroacoustic component, the holder is formed with a pocket hole, and the conductive connecting part is constructed of an insulative elastic resin piece provided in the pocket hole of the holder and a multiple number of fine conductive wires arranged with a predetermined pitch on the surface of the elastic resin piece, so as to be put into contact with the electrodes of the electroacoustic component.
  • the fourth aspect of the present invention resides in the electroacoustic component connector defined by the first aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted covering or engaged with, the electrodes of the electroacoustic component, the holder is formed with a pocket hole, and the conductive connecting part is constructed of an elastic resin piece provided in the pocket hole of the holder, the elastic resin piece being formed of insulative elastomers and conductive elastomers laminated alternately, so that the conductive elastomers of the elastic resin piece are put into contact with the electrodes of the electroacoustic component.
  • the fifth aspect of the present invention resides in the electroacoustic component connector defined by the first aspect, wherein the conductive connecting part is comprised of conductive wires to be put in inclined contact with the electrodes of the electroacoustic component, an elastic, first insulative elastomer attached to part of one side of the conductive wires and an elastic, second insulative elastomer attached to part of the opposite side of the conductive wires, and the first and second elastomers are arranged approximately point-symmetrically with respect to the approximate center of the length of the conductive wires while contact area reducing spaces are formed between the exposed face of the conductive wires and the first insulative elastomer and between the exposed face of the conductive wires and the second insulative elastomer, respectively, and either the first or second insulative elastomer is provided for the holder.
  • the sixth aspect of the present invention resides in a connecting structure for an electroacoustic component connector, characterized in that an electroacoustic component having electrodes at the peripheral portion thereof is electrically connected to the electrodes of an electrically joined object by an electroacoustic component connector comprising: an insulative holder attached to the electroacoustic component having electrodes; and a conductive connecting part provided for the holder so as to be put in contact with the electrodes of the electroacoustic component.
  • the seventh aspect of the present invention resides in the connecting structure for an electroacoustic component connector defined by the sixth aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted to the electrodes of the electroacoustic component, and the conductive connecting part is constructed of an insulative elastic resin piece provided in the holder and a multiple number of fine conductive wires arranged with a predetermined pitch and embedded in the height direction of the elastic resin piece, to be put into contact with the electrodes of the electroacoustic component.
  • the eighth aspect of the present invention resides in the connecting structure for an electroacoustic component connector defined by the sixth aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted covering or engaged with, the electrodes of the electroacoustic component, the holder is formed with a pocket hole, and the conductive connecting part is constructed of an insulative elastic resin piece provided in the pocket hole of the holder and a multiple number of fine conductive wires arranged with a predetermined pitch on the surface of the elastic resin piece, so as to be put into contact with the electrodes of the electroacoustic component.
  • the ninth aspect of the present invention resides in the connecting structure for an electroacoustic component connector defined by the sixth aspect, wherein the holder is formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted covering or engaged with, the electrodes of the electroacoustic component, the holder is formed with a pocket hole, and the conductive connecting part is constructed of an elastic resin piece provided in the pocket hole of the holder, the elastic resin piece being formed of insulative elastomers and conductive elastomers laminated alternately, so that the conductive elastomers of the elastic resin piece are put into contact with the electrodes of the electroacoustic component.
  • the tenth aspect of the present invention resides in the connecting structure for an electroacoustic component connector defined by the sixth aspect, wherein the conductive connecting part is comprised of conductive wires to be put in inclined contact with the electrodes of the electroacoustic component, an elastic, first insulative elastomer attached to part of one side of the conductive wires and an elastic, second insulative elastomer attached to part of the opposite side of the conductive wires, and the first and second elastomers are arranged approximately point-symmetrically with respect to the approximate center of the length of the conductive wires while contact area reducing spaces are formed between the exposed face of the conductive wires and the first insulative elastomer and between the exposed face of the conductive wires and the second insulative elastomer, respectively, and either the first or second insulative elastomer is provided for the holder.
  • the electroacoustic component of the present invention may take any shape such as button-like, cylindrical, rectangular, rectangular prism-like, polygonal or other shape.
  • the electrodes of this electroacoustic component may be a pair of flat metal plates or may be multiple f lexed leaf springs, or coil springs. Attachment of the holder to this electroacoustic component may be done by convexo-concave mating, insertion using positioning pins, bonding, adhesion etc.
  • the holder and conductive connecting part may be formed separately, or may be provided by assembling them after individual fabrication. Alternatively, they may be integrally formed of silicone rubber etc.
  • the holder may be formed having an approximately U-shaped section or in an approximately rectangular prism shape, so as to be fitted covering or engaged with, the electrodes of the electroacoustic component.
  • the holder may be formed with a pocket hole, and the conductive connecting part may be constructed of an insulative elastic resin piece provided in the pocket hole of the holder and a multiple number of fine conductive wires arranged with a predetermined pitch and embedded in the height direction of the elastic resin piece, so as to be put into contact with the electrodes of the electroacoustic component.
  • the approximate U-shaped section implies similar shapes such as angled U-shape, C-shape and the like.
  • the approximate center implies the mathematical middle point and roughly central points. Sentences including 'approximately point symmetrical' should also be understood similarly.
  • examples of the electrically joined object include various kinds of circuit boards (e. g. , printed board, flexible board, buildup wiring board), LCD display.
  • An electroacoustic component connector in the present embodiment includes: as shown in Figs. 1 to 9 and Fig.18, an insulative holder 10 covering or fitted on an electrode portion 2 at the periphery on the underside of an electroacoustic component 1 as part of a cellular phone; a conductive connecting part 20 put through, and supported by this holder 10 and to be in pressure contact with a pair of electrodes 3 of electroacoustic component 1 located below, and completes conduction between the paired electrodes 3 of electroacoustic component 1 and the electrodes on a circuit board 30 located above, by its being pressed.
  • electroacoustic component 1 examples include various kinds of speakers (including receivers) or microphones (e. g. , non-directional microphones, directional microphones and the like), and it is arranged with its vibrating membrane down in Fig.4.
  • This electroacoustic component 1 basically has a short cylindrical shape, circular button shape or the like, as shown in Figs.1 and 2, with part of its outer periphery radially projected forming electrode portion 1 of an approximate rectangle.
  • a pair of electrodes 3 Arranged on the rear side of this electrode portion 2 as a backplate are a pair of electrodes 3, as rectangular metal plates, spaced at a predetermined distance.
  • Holder 10 is formed of predetermined material by injection molding, extrusion, pasting, machining etc., and is detachably fitted and engaged with electrode portion 2 at the peripheral part of electroacoustic component 1, as shown in Figs.3 to 5.
  • multi-purpose plastics engineering plastics which are excellent in heat resistance, dimensional stability, moldability and the like, various kinds of elastomers (e.g., silicone rubber) and the like may be used.
  • elastomers e.g., silicone rubber
  • Specific examples include polypropylene, polyvinyl chloride, polyethylene, ABS resin, polycarbonate, polycarbonate containing glass fiber, polyetherimide, polyamide, polyether sulfone, aromatic polyester, liquid crystal polymers. Of these materials, polycarbonate is the most suitable in view of workability and cost.
  • the material of holder 10 should not be limited thereto.
  • the same material as for an aftermentioned elastic resin piece 21 and a support layer 23 may be used.
  • Holder 10 is formed by bending into, basically, a flat projected shape, in a shape having a U-cross-section or in an approximately rectangular prism shape as shown in Fig.3 and Figs.5 to 7, having a pocket hole 11 for a conductive connecting part formed in an elongated, approximately elliptic or rectangular shape.
  • the free ends of the holder 10, extending downward on both sides, are bent inwards forming anti-drop claws 12 (see Fig.6(a)) in consideration of assembly and cost performances etc.
  • These anti-drop claws 12 detachably engage electrode portion 2 of electroacoustic component 1 so as to effectively prevent conductive connecting part 20 from dislodging.
  • Dislodging may be prevented by fitting the free ends of holder 10 into electrode portion 2 of electroacoustic component 1 or may be prevented by forming the free end portions of holder 10 into an angled prism shape so as to fit the electrode portion 2 of the electroacoustic component (see Figs.6(b) and (c)).
  • Conductive connecting part 20, as shown in Figs.3, 8 and 9, is comprised of an insulative, elastic resin piece 21 which is detachably or fixedly fitted into pocket hole 11 of holder 10, and a multiple number of fine metal wires 22 embedded linearly in the height direction of the elastic resin piece 21 and arranged in multiple rows with a predetermined pitch along the longitudinal direction, so as to come into contact with paired electrodes 3 of electroacoustic component 1.
  • Elastic resin piece 21 is given as a block body which is formed of a predetermined material stable in shape so that it will neither significantly deform due to gravity nor be plastically deformed after its hardening. Further, it may have a support layer(s) 23 of the same shape selectively bonded to one side or both sides thereof.
  • Materials which can be considered for elastic resin piece 21 and support layer 23 are natural rubber, copolymer rubbers such as butadiene-styrene, acrylonitorile-butadiene, acrylonitorile-butadiene-styrene, styrene-ethylene, ethylene-propylene, ethylene-propylene-dien, synthetic rubbers such as chloroprene rubber, silicone rubber, butadiene rubber, isoprene rubber, chloro-sulfonated polyethylene rubber, polysulfide rubber, butyl rubber, fluoro rubber, urethane rubber, polyisobutylene rubber, and thermoplastic elastomers such as polyester elastomer etc., plasticized-vinyl-chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, etc.
  • silicone rubber which is inexpensive and excellent in aging performance, electric insulation, heat-resistance, compression set, workability and the like, is the best.
  • silicone rubber dimethyl-, methylphenyl- and methylvinyl-polysiloxanes, halide polysiloxanes blended with a filler such as silica so as to have a proper rheology characteristic, halide polysiloxanes vulcanized or cured with metal salt, can usually be considered.
  • Each fine metal wire 22 may be formed of gold, silver, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium bronze, nickel, nickel-titanium alloy, molybdenum, tungsten, stainless steel, iron, iron-carbon alloy or the like, or may be formed of one of these plated with metal as required. Of these, fine metal wire 22 plated with gold, is preferred in view of stability of the resistance and stability against corrosion and the like under high-temperature high-humidity environments.
  • each fine metal wire 22 should fall within the range of 3 to 500 ⁇ m, preferably 10 to 100 ⁇ m. This range is specified because if the wires are too thin they might break when arrayed. Conversely, if they are too thick, the desired small pitch cannot be achieved. Further, if the diameter of each fine metal wire 22 is specified within the range of 3 to 500 ⁇ m, preferably 10 to 100 ⁇ m, easy handling and moldability can be obtained.
  • conduction between electroacoustic component 1 and circuit board 30 is made by fitting holder 10 so as to cover electrode portion 2 of electroacoustic component 1, fitting conductive connecting part 20 through pocket hole 11 of the holder 10 so as to be supported thereby, placing one end portion of fine metal wires 22 into contact with electrodes 3 of electroacoustic component 1, fitting the assembly into the case of a cellular phone etc., placing the other end portion of fine metal wires 22 into contact with the electrodes of circuit board 30, and finally pressing down circuit board 30 so as to be fixed, whereby conduction between the electroacoustic component 1 and circuit board 30 can be reliably established (see Fig.18).
  • conduction between electroacoustic component 1 and circuit board 30 may be made by fitting conductive connecting part 20 through pocket hole 11 of the holder 10 so as to be supported thereby, fitting holder 10 so as to cover electrode portion 2 of electroacoustic component 1, and placing fine metal wires 22 of conductive connecting part 20 into contact with electrodes 3 of electroacoustic component 1.
  • the action in which conductive connecting part 20 is fitted through and supported by pocket hole 11 of holder 10 can be done manually or automatically by an automatic assembly system.
  • holder 10 and conductive connecting part 20 may be formed integrally as shown in Fig.10, so as to reduce the number of parts.
  • connection resistance becomes unstable, fatigue occurring due to repeated application of load or gilded portions of the electrodes peeling off, it is possible to secure markedly stable connecting conduction.
  • no coil type spring terminal is used, fatigue and like problems can be effectively eliminated.
  • holder 10 is constructed so as to only fit and cover electrode portion 2 of electroacoustic component 1 instead of fitting and housing electroacoustic component 1, marked reduction of material and reduction in manufacturing cost can be expected.
  • a conductive connecting part 20 is constituted of an insulative elastic resin piece 21 having an approximate semi-oval shape, detachably fitted to a pocket hole 11 of a holder 10 and a multiple number of fine metal wires 22 which are shaped in an approximate U-form and arranged in a row with a predetermined pitch on the curved surface of the elastic resin piece 21 so that the wires can be put in pressing contact with the electrodes of electroacoustic component 1 and those of circuit board 30.
  • An unillustrated, separated rubber layer may be selectively bonded to the linear, upright surfaces of elastic resin piece 21.
  • Holder 10 and conductive connecting part 20 instead of being formed separately can be formed integrally.
  • the material of elastic resin piece 21 is the same as that of the elastic resin piece 21 and support layer 23. Since other components are the same as the above embodiment, description is omitted.
  • a conductive connecting part 20 is given as a block-shaped elastic resin piece 21 which can be detachably fitted to a pocket hole 11 of a holder 10.
  • This elastic resin piece 21 is constructed so that plate-like, elastic, insulative elastomer 25 and conductive elastomer 26 are arranged alternately, forming multiple laminations abreast in a row, with their joined faces parallel to each other. Multiple layers of conductive elastomer 26 of the elastic resin piece 21 are pressed against the electrodes of electroacoustic component 1 and those of circuit board 30.
  • the hardness (measured by the testing method specified by JIS-K6253(ISO7619)) of elastic resin piece 21 is preferably set at 50 to 80° , preferably 60 to 80° .
  • This hardness setting enables uniform connection upon conduction even if the compressibility is markedly low as small as 2 to 10%, and can eliminate almost completely the buckling entailed with compression. Further, it is possible to obtain a reliable and stable connected state by a small load acting on the appliance. Resultantly, it is possible to promote development into compact and lightweight configurations.
  • Elastic resin piece 21 is produced by printing or calendering. Calendering is preferable because stable production can be obtained.
  • a thin film of insulative elastomer 25 is formed over a polyethylene terephthalate film by calendering, and is heated and cured.
  • a film of conductive elastomer 26 is formed on the insulative elastomer 25 by calendering.
  • the thus obtained lamination of films is peeled off from the polyethylene terephthalate film, so that the laminations as a whole are formed in multiple layers with the same orientation as that above, forming a block body. Thereafter, this is cut into slices so as to produce elastic resin piece 21.
  • Insulative elastomer 25 and conductive elastomer 26 differ only in whether conductive material is added or not.
  • the material of insulative elastomer 25 and conductive elastomer 26 is the same as that of elastic resin piece 21 and support layer 23.
  • conductive elastomer 26 the amount of 50 to 800 parts by weight, preferably 100 to 600 parts by weight of conductive material is added. This is so specified because if the amount is less than 50 parts by weight, satisfactory resistivity cannot be obtainedhence the expected connector function cannot be obtained. Conversely, when the amount is greater than 800 parts by weight, the function as an elastic body cannot be achieved.
  • the conductive material for conductive elastomer 26 carbon compounds, graphite, gold, silver, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium bronze, nickel, nickel-titanium alloy, molybdenum, tungsten, stainless steel, iron, iron-carbon alloy or the like may be used.
  • the conductive material may have a variety of particle shapes, such as spherical, elliptic, flaked and other forms.
  • the particle may be a metallic particle as well as a thermoplastic resin particle, heat-curing resin particle, silica particle etc., plated with metal, as required. These particles may be used alone or in combination of two or more kinds. From the viewpoint of stabilizing the resistivity, particles plated with silver or gold are preferred.
  • Holder 10 and elastic resin piece 21, or holder 10 and conductive connecting part 20, may be integrally formed, instead of being formed separately.
  • the other configurations are the same as the above embodiments, so description is omitted.
  • Fig.13 to Figs.16(a) and (b) show the fourth embodiment of the present invention.
  • a holder 10 is formed in a bent configuration having an approximate L-shaped section and is bonded or adhered so as to cover electrodes 2 on the underside of an electroacoustic component 1.
  • a conductive connecting part 20 is comprised of a multiple number of conductive wires 27 arranged between electroacoustic component 1 and a circuit board 30 in such a manner that the wires are inclined with respect to the vertical or approach direction, an elastic, first insulative elastomer 28 which is partially bonded to the rear side of the multiple conductive wires 27 and put into elastic contact with electrodes 3 of electroacoustic component 1 and an elastic second insulative elastomer 28A which is partially bonded to the obverse side of the multiple conductive wires 27 and put into elastic contact with the electrodes of circuit board 30.
  • the first and second insulative elastomers 28 and 28A are arranged so that they are set off from, and yet arranged approximately point-symmetrically with respect to, the approximate center P of the length of conductive wires 27, so that their cross-section forms an approximate X-shape while the first insulative elastomer 28 is bonded at its end and joined to holder 10 in such a manner that the exposed side of conductive wire 27 with the first or second insulative elastomer 28, 28A defines a contact area reducing space 29 of a triangular section.
  • Multiple conductive wires 27 are arranged abreast in a row with a predetermined pitch of 0.02 mm or greater, for example, as shown in Fig.13 and Figs.15(a) and 15(b). These multiple conductive wires 27 linearly extend with a predetermined angle of inclination. This angle of inclination is preferably 30° to 60° , preferably 45° . If the angle of inclination is less than 30° , the pressure reducing effect upon conduction is so low that conductive wires 27 are liable to buckle. Conversely, when the angle exceeds 60° , the height dimension of the electroacoustic component connector is too low to absorb the variation entailed with compression of the electroacoustic component connector.
  • Each conductive wire 27 is formed of gold, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium bronze, nickel, nickel-titanium alloy, molybdenum, tungsten, stainless steel, iron, iron-carbon alloy or the like, and is provided in an elongated plate-like, strip-like or line form, with its surface plated with gold, gold alloy or the like, as required.
  • the surface of conductive wires 27 is degreased with a solvent as required.
  • an adhesive adjuvant e.g., silane-coupling agent
  • each conductive wire 27 is 0.01 to 0.5 mm, preferably 0.02 to 0.5 mm. If the thickness is less than 0.01 mm, the material lacks strength as a wire, is poor in durability when used as a product and presents poor handling performance when fabricated. Conversely, when the thickness exceeds 0.5 mm, the rigidity of the material is too high to regulate the connecting load, and it is difficult to perform processings such as etching, laser shaping, press stamping, etc.
  • the approximate center P in the length of conductive wire 27 indicates the half point and thereabout of the length of conductive wire 27.
  • the first and second insulative elastomers 28 and 28A are made of elastic, nonfoamed material such as of silicone rubber, polybutadiene-rubber, natural rubber, polyisoprene rubber, urethane rubber, chloroprene rubber, polyester rubber, styrene-butadiene copolymerized rubber, epichlorohydrin rubber, or foamed material of one of these, and each have a thickness extended in the interior direction of Fig.12 and each are formed with a bend having an approximate L-shaped, approximate V-shaped or approximate open V-shaped cross section. These elastomers are arranged so as to partly overlap each other sandwiching conductive wires 27 when fabricated.
  • silicone rubber which is excellent in electric insulation, heat resistance, chemical resistance, heat resistance and compression set is the best.
  • first and second insulative elastomers 28 and 28A ranges from 10° to 70° H in rubber hardness, and preferably ranges from 30° to 60° H. Beyond this range, the rubber hardness is too high and a high contact pressure is needed. When the rubber hardness is less than 30° H, a sticky feeling which is peculiar to silicone rubber occurs after forming, hence causing difficulties in handling. Conversely, if the rubber hardness exceeds 60° H, a high contact pressure, greater than necessary, is needed.
  • Holder 10 and conductive connecting part 20 may be integrally formed, instead of being formed separately.
  • the other components are the same as the above embodiments, so description is omitted.
  • first and second insulative elastomers 28 and 28A functioning as elastic supports, contract, so as to make reliable connection between the electrodes of electroacoustic component 1 and the electrodes of circuit board 30 via multiple conductive wires 27, establishing conduction.
  • the same operational effect as that of the above embodiments can be expected.
  • the hollowed portions, i.e., contact area reducing spaces 29, are formed above and below the first and second insulative elastomers 28 and 28A, it is possible to minimize the contact area of the contact face.
  • the connecting pressure is relieved in the inclined direction of multiple conductive wires 27, the connecting pressure can be alleviated. As a result, it is possible to markedly reduce the connecting load with a simple configuration.
  • holder 10 is formed with a bend so that it has an approximate L-shaped cross-section, the present invention should not be limited thereto.
  • holder 10 may be formed so as to have an approximate plate-like cross section, approximate C-shaped cross section, approximate J-shaped cross section or other shapes.
  • the end portion of the second insinuative elastomer 28A may be bonded and joined to holder 10.
  • a conductive connecting part 20 is constructed by a pair of conductive rubber pins 40 which are arranged a predetermined distance apart, put through and supported by holder 10, each conductive rubber pin 40 being formed of an elastic conductive elastomer 26.
  • the exposed top and bottom ends of the paired conductive rubber pins 40 are adapted to be pressed against the electrodes of electroacoustic component 1 and those of circuit board 30.
  • Each conductive rubber pin 40 can be formed in a cylindrical form as shown in the figure, but should not be limited to this.
  • the pin may be formed in an elliptic cylindrical, prism shaped, triangular or polygonal cylindrical form.
  • Other components are the same as the above embodiments, so the description is omitted.
  • the present invention provides the effect that the electroacoustic component can be used again even when repair is needed and can provide effectiveness to deal with development of cellular phones into compact and light-weight configurations. It is also possible to eliminate instability of connection resistance entailed with vibration of the electroacoustic component and fatigue and unstable connection of the connecting part, etc.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
EP02730790A 2001-06-08 2002-05-30 Connecteur pour composant electroacoustique et structure de connexion de ce connecteur Withdrawn EP1394905A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001174352 2001-06-08
JP2001174352 2001-06-08
PCT/JP2002/005278 WO2002101885A1 (fr) 2001-06-08 2002-05-30 Connecteur pour composant electroacoustique et structure de connexion de ce connecteur

Publications (3)

Publication Number Publication Date
EP1394905A1 true EP1394905A1 (fr) 2004-03-03
EP1394905A8 EP1394905A8 (fr) 2004-04-28
EP1394905A4 EP1394905A4 (fr) 2007-01-03

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Application Number Title Priority Date Filing Date
EP02730790A Withdrawn EP1394905A4 (fr) 2001-06-08 2002-05-30 Connecteur pour composant electroacoustique et structure de connexion de ce connecteur

Country Status (7)

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EP (1) EP1394905A4 (fr)
JP (1) JPWO2002101885A1 (fr)
KR (1) KR100598250B1 (fr)
CN (1) CN1331275C (fr)
NO (1) NO20035457D0 (fr)
TW (1) TWI277736B (fr)
WO (1) WO2002101885A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008089456A2 (fr) * 2007-01-19 2008-07-24 Molex Incorporated Ensembles de bornes, connecteurs et fabrication de ceux-ci
EP2285136A1 (fr) * 2009-07-15 2011-02-16 Siemens Medical Instruments Pte. Ltd. Aide auditive dotée d'un écouteur échangeable
US10219054B2 (en) 2012-05-31 2019-02-26 Nitto Denko Corporation Protective member for acoustic component and waterproof case

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005167530A (ja) * 2003-12-02 2005-06-23 Pioneer Electronic Corp スピーカ装置
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Cited By (8)

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Publication number Priority date Publication date Assignee Title
WO2008089456A2 (fr) * 2007-01-19 2008-07-24 Molex Incorporated Ensembles de bornes, connecteurs et fabrication de ceux-ci
WO2008089456A3 (fr) * 2007-01-19 2008-12-11 Molex Inc Ensembles de bornes, connecteurs et fabrication de ceux-ci
US8206168B2 (en) 2007-01-19 2012-06-26 Molex Incorporated Terminal assemblies, connectors and manufacturing thereof
EP2285136A1 (fr) * 2009-07-15 2011-02-16 Siemens Medical Instruments Pte. Ltd. Aide auditive dotée d'un écouteur échangeable
US8428280B2 (en) 2009-07-15 2013-04-23 Siemens Medical Instruments Pte. Ltd. Hearing aid with an interchangeable earpiece
US10219054B2 (en) 2012-05-31 2019-02-26 Nitto Denko Corporation Protective member for acoustic component and waterproof case
TWI658735B (zh) * 2012-05-31 2019-05-01 日商日東電工股份有限公司 音響零件用保護構件及防水盒
TWI672048B (zh) * 2012-05-31 2019-09-11 日商日東電工股份有限公司 音響零件用保護構件及防水盒

Also Published As

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WO2002101885A1 (fr) 2002-12-19
TWI277736B (en) 2007-04-01
JPWO2002101885A1 (ja) 2004-09-30
KR100598250B1 (ko) 2006-07-07
EP1394905A8 (fr) 2004-04-28
CN1541433A (zh) 2004-10-27
NO20035457D0 (no) 2003-12-08
CN1331275C (zh) 2007-08-08
KR20040007662A (ko) 2004-01-24
EP1394905A4 (fr) 2007-01-03

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