DE2948034A1 - Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB - Google Patents

Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB

Info

Publication number
DE2948034A1
DE2948034A1 DE19792948034 DE2948034A DE2948034A1 DE 2948034 A1 DE2948034 A1 DE 2948034A1 DE 19792948034 DE19792948034 DE 19792948034 DE 2948034 A DE2948034 A DE 2948034A DE 2948034 A1 DE2948034 A1 DE 2948034A1
Authority
DE
Germany
Prior art keywords
electro
circuit board
loudspeaker
housing
chambers
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.)
Ceased
Application number
DE19792948034
Other languages
German (de)
Inventor
Ing.(grad.) Herbert 6230 Frankfurt Hofmann
Ing.(grad.) Dieter 6094 Bischofsheim Kirchner
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.)
Tenovis GmbH and Co KG
Original Assignee
Telefonbau und Normalzeit 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 Telefonbau und Normalzeit GmbH filed Critical Telefonbau und Normalzeit GmbH
Priority to DE19792948034 priority Critical patent/DE2948034A1/en
Publication of DE2948034A1 publication Critical patent/DE2948034A1/en
Ceased 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

The electroacoustic converter for e.g. a telephone system, has a housing (a) inside which is a support (i) with a loudspeaker (LA) attached. To improve the frequency response, the interior is divided into an inner chamber (R1) and outer chamber (R2) by a printed circuit board (L) attached to the loudspeaker support. Attached to the printed circuit board are electrical components (BT). The board is secured to the edges of the loudspeaker support panels by resilient sealing strips (D) which reduce vibration. An operating button (BE) is mounted inside a small additional chamber at the end of the loudspeaker housing.

Description

Elektro-akustischer Wandler mit zur Verbesserung des Frequenzverlaufes vorgesehenen Resonanzräuaen Die Erfindung betrifft einen elektro-akustischen Wandler mit mehreren zur Verbesserung des Frequenzverlaufes vorgesehenen Resonanzräumen, die durch mit Durchdringungen versehene Trennwände voneinander getrennt sind.Electro-acoustic converter to improve the frequency curve The invention relates to an electro-acoustic transducer with several resonance spaces intended to improve the frequency curve, which are separated from one another by partitions provided with penetrations.

Es ist bereits bekannt und üblich, bei elektro-akustischen Wandlern Resonanzräume vorzusehen, um damit den Frequenzverlauf zu verbessern. Diese Resonanzräume sind durch Trennwände voneinander getrennt, die zur Vermeidung von Resonanz spitzen Durchdringungen aufweisen. Solche Anordnungen sind für Fernsprech-Handapparate beschrieben in der DE-PS 970 840 (1) und in der DE-AS 11 88 656 (2).Wie aus der Beschreibung und Abbildung von 1 hervorgeht, wird durch die besondere Ausbildung der Trennwand die Trennung der Resonanzräume und auch die optimale Verkopplung derselben erreicht. Auch in 2 sind Trennwände und Öffnungen vorgesehen, die in besonderer Weise dem Anwendungsfall entsprechend ausgebildet sind.It is already known and common in electro-acoustic converters Provide resonance spaces in order to improve the frequency response. These resonance spaces are separated from each other by partitions that point to avoid resonance Have penetrations. Such arrangements are described for telephone handsets in DE-PS 970 840 (1) and in DE-AS 11 88 656 (2). As from the description and Figure 1 is evident from the special design of the partition the separation of the resonance chambers and also the optimal coupling of the same is achieved. Partition walls and openings are also provided in FIG Application are designed accordingly.

Um aen erwänschten 2;eck zu erreichen, ist in beiden Fällen ein nohes Maß anPräzision erforderlich, und die als @@@nwände d@enenden B@ @eile müssen gesondert gefertigt und montiert werden. Wenn außerdem noch elektrische Bauelemente erforderlich sind, so mussen zu deren Befestigung weitere Aufwendungen gemacht werden.In order to achieve a desired corner, it is necessary in both cases A degree of precision is required, and the parts that end up as walls must be separately manufactured and be assembled. If electrical components are also required, further efforts must be made to fix them.

Aufgabe der Erfindung ist es, einen elektro-akustischen Wandler vorzustellen, bei dem die Trennwände einfach und preiswert sind, und keine weiteren Aufwendungen für die Unterbringung der elektrischen Bauelemente erforderlich sind.The object of the invention is to present an electro-acoustic converter, in which the partitions are simple and inexpensive, and no further expenses are required for accommodating the electrical components.

Diese Aufgabe wird dadurch gelöst, daß die Trennwände durch Leiterplatten gebildet werden, die für den Betrieb des elektro-akustischen Wandlers erforderliche Bauteile enthalten.This object is achieved in that the partitions are made by printed circuit boards are formed, the necessary for the operation of the electro-acoustic converter Components included.

Mit der Erfindung wird in vorteilhafter Weise erreicht, daß eine ohnehin herzustellende, die elektrischen Bauteile tragende Leiterplatte, die auch die Verdrahtung der Schaltungsanordnung enthält, als Trennwand dient. Dadurch sind keine besonderen Trennwände erforderlich, und die Durchdringungen werden ohne zusätzlichen Aufwand zusammen mit den Bohrungen der Leiterplatte hergestellt.With the invention it is achieved in an advantageous manner that one anyway The printed circuit board to be produced which carries the electrical components and which also carries out the wiring contains the circuit arrangement, serves as a partition. This means that there are no special ones Partitions are required, and the penetrations are made with no additional effort made together with the holes in the circuit board.

Weitere Vorteile ergeben sich gemäß den Unteransprechen dadurch, daß die Leiterplatte das innere Gehäuse abschließt und dabei die Bedienungselemente elektrisch mit den übrigen Bauteilen der Schaltungsanordnung verbindet.Further advantages result according to the sub-clauses in that the circuit board closes the inner housing and the controls electrically connects to the other components of the circuit arrangement.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer Zeichnung näher beschrieben. In der Zeichnung ist die Seitenansicht eines als Lautsprecher LA ausgeführten elektro-akustischen Wandlers dargestellt, der in ein Gehäuse eingebaut ist. Die Leiterplatte L schließt dabei ein inneres Gehäuse i so ab, daß zwei Resonanzräume R1 und R2 entstehen. In der Zeichnung ist angedeutet, wie die Bauteile BT und auch die Bedienungselemente BE auf der Leiterplatte befestigt sind. Die Druckschaltung der Leiterplatte ist in bekannter Weise so ausgelegt, daß gemäß der Schaltungsanordnung die richtigen Punkte elektrisch miteinander verbunden sind.An embodiment of the invention is based on a Drawing described in more detail. In the drawing is the side view of a speaker LA executed electro-acoustic transducer is shown, which is built into a housing is. The circuit board L closes an inner housing i so from that two resonance spaces R1 and R2 arise. In the drawing it is indicated like the components BT and also the controls BE attached to the circuit board are. The printed circuit board is designed in a known manner so that according to the circuit arrangement the correct points are electrically connected to one another are.

Um akustisch einen optimalen Frequenzverlauf zu erhalten, sind an Befestigungsstellen der Leiterplatte Dichtungsstreifen D angeordnet. Die zur Kopplung der beiden Resonanzräume Rl und R2 dienenden Öffnungen Ö können an jeder beliebigen Stelle der Leiterplatte angebracht werden, so wie es für das akustische Verhalten der Anordnung am günstigsten ist. Wie weiterhin aus der Zeichnung ersichtlich ist, sind die Bedienungselemente von dem Resonanzraum R1 getrennt. Deshalb treten keine Veränderungen der akustischen Eigenschaften ein, wenn durch den Einbau der Bedienungselemente Undichtigkeiten entstehen.In order to obtain an acoustically optimal frequency curve, are on Fastening points of the printed circuit board sealing strips D arranged. The one for coupling of the two resonance spaces Rl and R2 serving openings Ö can be at any Place the circuit board to be attached as it is for the acoustic behavior the arrangement is most favorable. As can also be seen from the drawing, the operating elements are separated from the resonance chamber R1. Therefore do not step Changes in the acoustic properties, if by installing the controls Leaks occur.

Claims (3)

Elektro-akustischer Wandler mit zur Verbesserung des Frequenzverlaufes vorgesehenen Resonanzräumen Patentansprüche: ; Elektro-akustischer Wandler mit mehreren zur Verbesserung des Frequenzverlaufes vorgesehenen Resonanzräumen, die durch mit Durchdringungen versehene Trennwände voneinander getrennt sind, dadurch gekennzeichnet, daß die Trennwände durch Leiterplatten (L) gebildet werden, die fÜr den Betrieb des elektro-akustichen Wandlers erforderliche Bauteile (BT) enthalten.Electro-acoustic converter to improve the frequency curve provided resonance spaces Patent claims:; Electro-acoustic converter with several to improve the frequency curve provided resonance spaces, which by with Partition walls provided with penetrations are separated from one another, characterized in that that the partitions are formed by printed circuit boards (L) for the operation of the electro-acoustic converter contain the necessary components (BT). 2. Elektro-akustischer Wandler nach Anspruch 1, dadurch gekennzeichnet, daß eine Leiterplatte (L) innerhalb eines Gehäuses (G) mit Hilfe von elastischen Dichtungsstreifen (D) klirrfrei montiert ist.2. Electro-acoustic transducer according to claim 1, characterized in that that a circuit board (L) within a housing (G) with the help of elastic Sealing strip (D) is mounted without distortion. 3. Elektro-akustischer Wandler nach Anspruch 1, dadurch gekennzeichnet, daß zwei Resonanzräume (RI,R2) vorgesehen sind, die durch ein äußeres (a) und ein inneres (i) Gehäuse gebildet werden, wobei die Leiterplatte (L) als Bodenteil des inneren Gehäuses dient,und daß die Beaie£urseleerte (BE) am inneren Gehäuse befesti@@@ @nd3. Electro-acoustic transducer according to claim 1, characterized in that that two resonance chambers (RI, R2) are provided through an outer (a) and a inner (i) housing are formed, the circuit board (L) as the bottom part of the inner housing is used, and that the Beaie £ urseleerte (BE) is attached to the inner housing. @nd
DE19792948034 1979-11-29 1979-11-29 Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB Ceased DE2948034A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792948034 DE2948034A1 (en) 1979-11-29 1979-11-29 Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792948034 DE2948034A1 (en) 1979-11-29 1979-11-29 Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB

Publications (1)

Publication Number Publication Date
DE2948034A1 true DE2948034A1 (en) 1981-06-11

Family

ID=6087146

Family Applications (1)

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DE19792948034 Ceased DE2948034A1 (en) 1979-11-29 1979-11-29 Electroacoustic converter assembly - has loudspeaker mounted inside housing divided into two chambers by PCB

Country Status (1)

Country Link
DE (1) DE2948034A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118356A1 (en) * 1983-03-07 1984-09-12 Thomson-Csf Electro-acoustic transducer with piezo-electric diaphragm
EP0129320A1 (en) * 1983-06-16 1984-12-27 Northern Telecom Limited Loudspeaker enclosure arrangement for voice communication terminals
US4625328A (en) * 1983-06-13 1986-11-25 Konutra Industries, Ltd. Integrated amplifier and speaker system with improved cooling efficiency
DE4117598A1 (en) * 1991-05-29 1992-12-03 Fernsprech Und Signalbau Gmbh Telephone with slim casing and loudspeaker - has loudspeaker compartment forming two-cavity resonance system in telephone housing, with tuned frequency characteristics for ringing tone generation and hands-free operation
EP0909077A2 (en) * 1997-10-06 1999-04-14 Nokia Mobile Phones Ltd. Method and arrangement for improving leak tolerance of an earpiece in a radio device
FR2783652A1 (en) * 1998-09-23 2000-03-24 Sagem Mobile telephone with amplified speaker output includes protective screen behind speaker, with apertures to increase effective resonant cavity

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970840C (en) * 1952-02-05 1958-11-06 Carl Ludwig Lehner Electroacoustic converter for telephone purposes
DE1188656B (en) * 1962-04-27 1965-03-11 Siemens Ag Arrangement for improving the frequency response of an electroacoustic converter
DE1277353B (en) * 1964-09-19 1968-09-12 Krone Kg Talking capsule with transistor amplifier
DE1487350A1 (en) * 1965-05-24 1969-03-20 Ltv Ling Altec Inc Vibration system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970840C (en) * 1952-02-05 1958-11-06 Carl Ludwig Lehner Electroacoustic converter for telephone purposes
DE1188656B (en) * 1962-04-27 1965-03-11 Siemens Ag Arrangement for improving the frequency response of an electroacoustic converter
DE1277353B (en) * 1964-09-19 1968-09-12 Krone Kg Talking capsule with transistor amplifier
DE1487350A1 (en) * 1965-05-24 1969-03-20 Ltv Ling Altec Inc Vibration system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118356A1 (en) * 1983-03-07 1984-09-12 Thomson-Csf Electro-acoustic transducer with piezo-electric diaphragm
FR2542552A1 (en) * 1983-03-07 1984-09-14 Thomson Csf PIEZOELECTRIC DIAPHRAGM ELECTROACOUSTIC TRANSDUCER
US4607145A (en) * 1983-03-07 1986-08-19 Thomson-Csf Electroacoustic transducer with a piezoelectric diaphragm
US4625328A (en) * 1983-06-13 1986-11-25 Konutra Industries, Ltd. Integrated amplifier and speaker system with improved cooling efficiency
EP0129320A1 (en) * 1983-06-16 1984-12-27 Northern Telecom Limited Loudspeaker enclosure arrangement for voice communication terminals
DE4117598A1 (en) * 1991-05-29 1992-12-03 Fernsprech Und Signalbau Gmbh Telephone with slim casing and loudspeaker - has loudspeaker compartment forming two-cavity resonance system in telephone housing, with tuned frequency characteristics for ringing tone generation and hands-free operation
EP0909077A2 (en) * 1997-10-06 1999-04-14 Nokia Mobile Phones Ltd. Method and arrangement for improving leak tolerance of an earpiece in a radio device
EP0909077A3 (en) * 1997-10-06 2006-05-17 Nokia Corporation Method and arrangement for improving leak tolerance of an earpiece in a radio device
FR2783652A1 (en) * 1998-09-23 2000-03-24 Sagem Mobile telephone with amplified speaker output includes protective screen behind speaker, with apertures to increase effective resonant cavity
EP1001547A1 (en) * 1998-09-23 2000-05-17 Sagem Sa Loudspeaking mobile telephone

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8131 Rejection