EP0522352B1 - Verfahren zum Verkleben des Schwingspulenträgers mit der Membran eines Lautsprechers - Google Patents

Verfahren zum Verkleben des Schwingspulenträgers mit der Membran eines Lautsprechers Download PDF

Info

Publication number
EP0522352B1
EP0522352B1 EP92110616A EP92110616A EP0522352B1 EP 0522352 B1 EP0522352 B1 EP 0522352B1 EP 92110616 A EP92110616 A EP 92110616A EP 92110616 A EP92110616 A EP 92110616A EP 0522352 B1 EP0522352 B1 EP 0522352B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
loudspeaker
membrane
curing
voice coil
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.)
Expired - Lifetime
Application number
EP92110616A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0522352A3 (en
EP0522352A2 (de
Inventor
Johann Dipl.-Ing. Lang
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland GmbH
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 Nokia Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0522352A2 publication Critical patent/EP0522352A2/de
Publication of EP0522352A3 publication Critical patent/EP0522352A3/de
Application granted granted Critical
Publication of EP0522352B1 publication Critical patent/EP0522352B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Definitions

  • the invention is concerned with improving the method for gluing the voice coil bobbin to the membrane of a loudspeaker, at least one of the aforementioned components of the loudspeaker being formed from a material that absorbs the adhesive.
  • the voice coil bobbin is glued to the diaphragm of the loudspeaker using two-component adhesives if, on the one hand, at least one of the loudspeaker components to be glued together is formed from a material that absorbs the adhesive and, on the other hand, a high-temperature-resistant and at the same time shock-resistant connection is desired.
  • the loudspeakers are intended for use in motor vehicles are. Because of the heating of the interior of motor vehicles by solar radiation, the loudspeakers, together with the adhesive seam connecting the voice coil former and the membrane, have to be able to provide one hundred percent of their performance even after three hundred hours of continuous operation at an ambient temperature of 80 ° C to ensure good operational safety . Since the voice coil can heat up to a value of approximately 200 ° C through the operation of the loudspeaker - especially during continuous operation of the loudspeaker and the voice coil is connected to the adhesive seam via the voice coil former - temperatures in the area of the adhesive seam are around 180 ° C No rarity.
  • two-component adhesives are no longer able to guarantee a completely rigid connection between two components.
  • two-component adhesives tend to soften in this temperature range.
  • the latter is particularly disadvantageous because the loudspeaker membrane is driven via the voice coil former and the rigidity of the connection between the membrane and voice coil former is of crucial importance for the playing behavior and the quality of the loudspeaker.
  • fillers are added to the two-component adhesive.
  • a well-known and frequently used filler is stone powder, for example.
  • UV-curing adhesives are known per se which are capable of curing under the action of ultraviolet light.
  • these adhesives which already have a very good temperature resistance as a thermoset, cannot be used if it is necessary to use this adhesive to connect materials that are designed so that they apply this adhesive after the UV-curing adhesive has been applied soak up or allow the adhesive to diffuse into the material.
  • the lack of usability of commercially available UV adhesives for bonding the materials absorbing the adhesive is based on the fact that such connections are only stable up to a temperature of about 100 ° C. and this value is far below the value required for the application mentioned.
  • the invention is therefore based on the object of specifying a method for gluing the membrane and voice coil former, which avoids the disadvantages mentioned when using two-component adhesives and nevertheless enables a high-temperature-resistant and at the same time shock-resistant connection between membrane and voice coil former.
  • a UV-curing, one-component adhesive based on acrylate is used as adhesives for gluing voice coil carrier and membrane, which is designed so that it cures completely under the action of ultraviolet light, i.e. also in the areas that in the absorbent material has diffused into it.
  • This characteristic information is based on the knowledge of the applicant that commercially available UV adhesives, if one wants to connect them with materials that absorb the adhesive, therefore do not achieve the high temperature resistance required for automotive use because the proportions of the adhesive that are in the Diffuse materials in, do not fully harden through exposure to ultraviolet light on the surface of the adhesive.
  • UV-curing adhesive the portions of which that diffuse into the materials to be bonded and the adhesive absorbing materials cure under the action of ultraviolet light as well as the portions that directly on the interface between the adhesive and the ultraviolet Light lying.
  • UV-curing adhesives that fulfill these properties are acrylate-based adhesives, the filler of which is designed so that it is able to allow the incident ultraviolet light waves to penetrate into the areas that have diffused into the material absorbing the adhesive.
  • Such a filler is quartz powder. This quartz powder is able to transmit this light deep into the adhesive when it is exposed to ultraviolet light. This forwarding has the effect that parts of the adhesive which have remained uncured without the addition of quartz flour or the use of the special photoinitiator are also cured.
  • a photoinitiator in which particularly good hardening of the adhesive penetrating into the membrane material is achieved is the photoinitiator Darocur 1173.
  • This photoinitiator can be obtained from Merck under this manufacturer's name.
  • a UV-curing, one-component adhesive is specified, which ensures a temperature-resistant and rigid connection between the above-mentioned components between a membrane made of paper and a voice coil made of aluminum.
  • the voice coil former and the membrane are first plugged together.
  • the voice coil joint is then cast with the adhesive.
  • the adhesive that forms the adhesive bead is a one-component, UV-curing adhesive based on acrylate.
  • the adhesive also contains about 1 - 8 percent by weight organic silane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP92110616A 1991-06-29 1992-06-24 Verfahren zum Verkleben des Schwingspulenträgers mit der Membran eines Lautsprechers Expired - Lifetime EP0522352B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4121686 1991-06-29
DE4121686A DE4121686A1 (de) 1991-06-29 1991-06-29 Verfahren zum verkleben des schwingspulentraegers mit der membran eines lautsprechers

Publications (3)

Publication Number Publication Date
EP0522352A2 EP0522352A2 (de) 1993-01-13
EP0522352A3 EP0522352A3 (en) 1993-08-25
EP0522352B1 true EP0522352B1 (de) 1994-10-26

Family

ID=6435136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110616A Expired - Lifetime EP0522352B1 (de) 1991-06-29 1992-06-24 Verfahren zum Verkleben des Schwingspulenträgers mit der Membran eines Lautsprechers

Country Status (9)

Country Link
EP (1) EP0522352B1 (enExample)
JP (1) JPH05252592A (enExample)
CZ (1) CZ282515B6 (enExample)
DE (2) DE4121686A1 (enExample)
DK (1) DK0522352T3 (enExample)
ES (1) ES2066523T3 (enExample)
HU (1) HU214652B (enExample)
MY (1) MY108337A (enExample)
PL (1) PL168195B1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434630A1 (de) * 1994-09-28 1996-04-04 Nokia Deutschland Gmbh UV-Klebstoff
US6003766A (en) 1995-09-02 1999-12-21 New Transducers Limited Vending machine
US6243473B1 (en) 1995-09-02 2001-06-05 New Transducers Limited Laptop computer with loudspeaker(s)
UA51671C2 (uk) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Акустичний пристрій
DE19645797A1 (de) * 1996-11-07 1998-05-14 Nokia Deutschland Gmbh Mehrkomponentiger Klebstoff
KR100980520B1 (ko) * 2008-03-20 2010-09-06 이석순 보이스 코일을 진동판에 접착하는 방법 및 장치
CN107880828A (zh) * 2017-11-21 2018-04-06 苏州赛伍应用技术股份有限公司 一种微型扬声器振膜球顶用粘结胶膜及球顶模块

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1769476B2 (de) * 1968-05-29 1977-09-22 Resart-lhm AG, 6500 Mainz Lichthaertender polymerisationskleber
US3959210A (en) * 1974-02-20 1976-05-25 Tatyana Esperovna Lipatova Acrylate adhesive composition
DE2846573A1 (de) * 1978-10-26 1980-05-08 Roehm Gmbh Fluessige bis pastenfoermige, haertbare kunststoffmasse
SU1008929A1 (ru) * 1981-01-15 1983-03-30 Предприятие П/Я В-2962 Способ склеивани активных элементов пьезокерамических преобразователей
DE3242630A1 (de) * 1982-11-18 1984-05-24 Norbert 7239 Epfendorf Schäfer Verfahren zur herstellung eines lautsprechers mit mehreren verteilten elektrodynamischen systemen
JPS61223716A (ja) * 1985-03-28 1986-10-04 Olympus Optical Co Ltd 光学部品の保持装置
SU1470755A1 (ru) * 1986-07-14 1989-04-07 Харьковский институт инженеров коммунального строительства Полимерна композици дл креплени анкерных болтов в бетоне

Also Published As

Publication number Publication date
DK0522352T3 (da) 1994-11-28
MY108337A (en) 1996-09-30
CZ9202004A3 (en) 1993-01-13
DE4121686A1 (de) 1993-01-07
ES2066523T3 (es) 1995-03-01
EP0522352A3 (en) 1993-08-25
HU214652B (hu) 1998-04-28
PL294720A1 (enExample) 1993-02-08
HUT63535A (en) 1993-08-30
EP0522352A2 (de) 1993-01-13
JPH05252592A (ja) 1993-09-28
CZ282515B6 (cs) 1997-07-16
DE59200685D1 (de) 1994-12-01
HU9201776D0 (en) 1992-09-28
PL168195B1 (pl) 1996-01-31

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