DE3818552A1 - Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls - Google Patents

Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls

Info

Publication number
DE3818552A1
DE3818552A1 DE19883818552 DE3818552A DE3818552A1 DE 3818552 A1 DE3818552 A1 DE 3818552A1 DE 19883818552 DE19883818552 DE 19883818552 DE 3818552 A DE3818552 A DE 3818552A DE 3818552 A1 DE3818552 A1 DE 3818552A1
Authority
DE
Germany
Prior art keywords
vibration damping
housing
housing walls
walls
connecting rods
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Withdrawn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
DE19883818552
Other languages
German (de)
Inventor
Walter Koschwitz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19883818552 priority Critical patent/DE3818552A1/en
Publication of DE3818552A1 publication Critical patent/DE3818552A1/en
Withdrawn legal-status Critical Current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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
    • H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The damping of loudspeaker housings according to the invention can self-evidently be undertaken in a plurality of axial directions. In this case, it is not necessary that the introduction of force takes place at the centre point or on a central axis of the housing wall to be damped. For connecting the housing walls, as many connecting rods as desired can be used. Intersections at a point are intended to be avoided, in order to make special constructional measures unnecessary. It is self evident that the positioning of the connecting rods is also determined by the position of the loudspeaker. The mechanical design of the connecting rods offers manifold possibilities: screws and tubes with inner threads, hexagonal-head screws, cross-head screws, cap nuts, etc., without thereby altering the characteristic features of the present damping methods.

Description

Die Erfindung betrifft Schwingungsdämpfung bei Lautsprechergehäusen durch verspannende Verbindung sich gegenüberliegender Gehäusewände. Dabei kann die Spannung der Gehäusewände sowohl durch Druck als auch durch Zug bewirkt werden.The invention relates to vibration damping Loudspeaker housings through tensioning connection themselves opposite housing walls. The tension of the Housing walls caused by both pressure and train will.

Neben einer Vielzahl anderer schwingungsdämpfender Maßnahmen (z. B. Beschichtungen mit verschiedensten Materialien) ist das Mittel der Gehäuseversteifung durch zusätzlich eingefügte Querverbindungen in vielfältiger Form bereits bekannt. Die vorgelegte Lösung geht über eine Versteifung und Stabilisierung hinaus, indem auf die zu dämpfenden Gehäuseflächen ein zusätzlicher Druck oder Zug ausgeübt wird.In addition to a variety of other vibration damping measures (e.g. coatings with different materials) that is Means of stiffening the housing by additionally inserted Cross-connections in various forms are already known. The presented solution goes over a stiffening and stabilization addition, by clicking on the housing surfaces to be damped additional pressure or tension is exerted.

Dadurch werden die bedämpften Gehäuseflächen so unter Spannung gesetzt, daß sich ihre Resonanzfrequenz erhöht und außerhalb des Bereichs der Arbeitsfrequenzen der verwendeten Lautsprechersysteme liegt. Die Verbindung der Gehäusewände geschieht zweckmäßigerweise durch eine oder mehrere Verbindungsstangen, die in ihrer Dimension so gewählt werden, daß ihre eigene Resonanzfrequenz ebenfalls außerhalb des angestrebten Arbeitsbereichs liegt. Durch Anziehen der an den Außenseiten des Gehäuses offen oder versenkt angebrachten Muttern oder Schrauben kann jede erwünschte Spannkraft zwischen den solcherart miteinander verbundenen Gehäuseflächen erreicht werden. Es ist bei dieser Anordnung auch jederzeit möglich, die Spannkraft bei auftretender Materialermüdung nachzuregeln. Weniger zweckmäßig, aber ebenfalls möglich ist eine Druckausübung durch innenliegende Muttern oder Schrauben. Dabei werden allerdings die Eckverbindungen der einzelnen Gehäusewände in ungünstiger Weise beansprucht. This will make the damped housing surfaces so tensioned that their resonance frequency increased and outside the range of Working frequencies of the speaker systems used is. The Connection of the housing walls is conveniently done by one or more connecting rods that are so dimensionally be chosen that their own resonance frequency as well is outside the intended work area. By tightening the open or recessed on the outside of the case attached nuts or bolts can be any desired Tension between those connected in such a way Housing surfaces can be reached. It is with this arrangement too possible at any time, the clamping force when occurring Readjust material fatigue. Less useful, but also pressure can be exerted by internal nuts or Screws. However, the corner connections of the individual housing walls claimed in an unfavorable manner.  

Bei geeigneter Gestaltung der einzelnen Gehäusewände bietet die Spannungserzeugung durch außenliegende Muttern oder Schrauben Stabilitäts- und Montagevorteile. Da sich die sechs Wände eines quaderförmigen Gehäuses durch mindestens drei Verbindungsstangen in den drei Richtungsachsen miteinander verbinden lassen, ist eine Montage von Lautsprechergehäusen ohne Verleimung möglich. Das bietet Vorteile bei Lagerung und Versand von Bausätzen. Die notwendige Abdichtung kann vom Erwerber eines Bausatzes problemlos selbst vorgenommen werden. Schließlich ist bei entsprechender Anordnung der Verbindungsstangen die Möglichkeit gegeben, besondere Zuleitungen zu den Lautsprechern zu vermeiden, indem man eine oder mehrere Verbindungsstangen als Stromleiter nutzt. In den nachfolgenden drei Figuren ist die vorteilhafte Ausgestaltung der Erfindung in Zusammenhang mit der nachfolgenden Beschreibung dargestellt. Dabei werden zur Verspannung Gewindestangen und Muttern verwendet.With a suitable design of the individual housing walls, the Voltage generation by external nuts or screws Stability and assembly advantages. Since the six walls are one cuboid housing by at least three connecting rods can be connected in the three directional axes loudspeaker housings can be installed without gluing. This offers advantages when storing and shipping kits. The necessary sealing can be obtained from the purchaser of a kit can be easily done by yourself. Finally, at appropriate arrangement of the connecting rods the possibility given to avoid special leads to the speakers, by using one or more connecting rods as current conductors uses. The following three figures show the advantageous one Embodiment of the invention in connection with the following Description shown. Doing so will cause tension Threaded rods and nuts used.

Fig. 1 Schnitt in Richtung einer Spannachse eines erfindungsgemäß auf zwei Wänden bedämpften Gehäuses. Fig. 1 section in the direction of a clamping axis of a housing damped according to the invention on two walls.

Die beiden Gehäusewände 3 und 4 sind durch die Gewindestange 5 miteinander verbunden. Bei Anziehen der Muttern 6 und 7 werden sie gespannt und damit bedämpft. Die Resonanzfrequenz der Wände 3 und 4 wird angehoben. Die Gehäusewände 1 und 2 bleiben in dieser Darstellung unbedämpft.The two housing walls 3 and 4 are connected to one another by the threaded rod 5 . When the nuts 6 and 7 are tightened, they are tensioned and thus damped. The resonance frequency of walls 3 and 4 is increased. The housing walls 1 and 2 remain undamped in this illustration.

Fig. 2 Schnitt in Richtung einer Spannachse eines erfindungsgemäß auf zwei Wänden bedämpften Gehäuses. Fig. 2 section in the direction of a clamping axis of a housing damped according to the invention on two walls.

Die Gewindestange 5 stützt sich auf den Gehäusewänden 3 und 4 ab. Die Muttern 8 und 9 werden angezogen und stützen sich auf den Hülsen 10 und 11 ab. Die Hülsen 10 und 11 übertragen die Kraft auf die Gehäusewände. Dadurch werden die Wände 3 und 4 bedämpft. Die Gehäusewände 1 und 2 bleiben in dieser Darstellung unbedämpft.The threaded rod 5 is supported on the housing walls 3 and 4 . The nuts 8 and 9 are tightened and are supported on the sleeves 10 and 11 . The sleeves 10 and 11 transmit the force to the housing walls. This dampens walls 3 and 4 . The housing walls 1 and 2 remain undamped in this illustration.

Fig. 3 Schnitt in Richtung zweier Spannachsen eines erfindungsgemäß auf vier Wänden bedämpften Gehäuses. Fig. 3 section in the direction of two clamping axes of a housing damped according to the invention on four walls.

Hier sind die Gehäusewände 3 und 4 durch die Verbindungsstange 5, die Gehäusewände 1 und 2 durch die Verbindungsstange 14 verbunden. Nach Anziehen der Muttern 6, 7, 12 und 13 werden die Wände 1, 2, 3 und 4 bedämpft und gleichzeitig derart miteinander verbunden, daß eine Verleimung nicht erforderlich ist.Here, the housing walls 3 and 4 are connected by the connecting rod 5 , the housing walls 1 and 2 by the connecting rod 14 . After tightening the nuts 6, 7, 12 and 13 , the walls 1, 2, 3 and 4 are damped and at the same time connected to one another in such a way that gluing is not necessary.

Claims (4)

1. Schwingungsdämpfung, gekennzeichnet durch verspannende Verbindung sich gegenüberliegender Gehäusewände und einer dadurch erzielten Schwindungsdämpfung an den verbundenen Gehäusewänden.1. Vibration damping, characterized by a bracing connection of opposing housing walls and a resulting vibration damping on the connected housing walls. 2. Schwingungsdämpfung nach Anspruch 1, dadurch gekennzeichnet, daß bei außenliegenden Muttern oder Schrauben die spannende Kraft von außen nach innen wirkt (Fig. 1).2. Vibration damping according to claim 1, characterized in that with external nuts or screws, the exciting force acts from the outside in ( Fig. 1). 3. Schwingungsdämpfung nach Anspruch 1, dadurch gekennzeichnet, daß bei innenliegenden Muttern oder Schrauben die spannende Kraft von innen nach außen wirkt (Fig. 2).3. Vibration damping according to claim 1, characterized in that with internal nuts or screws, the exciting force acts from the inside out ( Fig. 2). 4. Schwingungsdämpfung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß bei der Bedämpfung aller sechs Wände eines quaderförmigen Gehäuses, die Montage des Gehäuses ohne Verleimung oder andere Mittel der Verbindung vorgenommen werden kann, wenn die Gehäusewände entsprechend gestaltet werden (Fig. 3).4. Vibration damping according to claims 1 and 2, characterized in that in the damping of all six walls of a cuboid housing, the assembly of the housing can be carried out without gluing or other means of connection if the housing walls are designed accordingly ( Fig. 3) .
DE19883818552 1988-05-27 1988-05-27 Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls Withdrawn DE3818552A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883818552 DE3818552A1 (en) 1988-05-27 1988-05-27 Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883818552 DE3818552A1 (en) 1988-05-27 1988-05-27 Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls

Publications (1)

Publication Number Publication Date
DE3818552A1 true DE3818552A1 (en) 1989-11-30

Family

ID=6355549

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883818552 Withdrawn DE3818552A1 (en) 1988-05-27 1988-05-27 Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls

Country Status (1)

Country Link
DE (1) DE3818552A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501028U1 (en) * 1995-01-24 1995-05-24 Strauß, Günter, 34119 Kassel Loss factor reducing loudspeaker enclosure
DE19815751A1 (en) * 1998-04-08 1999-10-14 Matthias Petig Loudspeaker with housing made of several components has decoupling of resonant frequencies of chassis and housing achieved without increasing material thickness or costs and without special shaping of housing
US7212644B2 (en) * 2000-05-26 2007-05-01 California Institute Of Technology Resonant frequency adjustment using tunable damping rods
DE102009034110B3 (en) * 2009-07-21 2011-01-27 Kammler, Dietmar, Dr. speaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501028U1 (en) * 1995-01-24 1995-05-24 Strauß, Günter, 34119 Kassel Loss factor reducing loudspeaker enclosure
DE19815751A1 (en) * 1998-04-08 1999-10-14 Matthias Petig Loudspeaker with housing made of several components has decoupling of resonant frequencies of chassis and housing achieved without increasing material thickness or costs and without special shaping of housing
DE19815751C2 (en) * 1998-04-08 2000-10-26 Matthias Petig Loudspeaker with a loudspeaker housing formed from several components
US7212644B2 (en) * 2000-05-26 2007-05-01 California Institute Of Technology Resonant frequency adjustment using tunable damping rods
DE102009034110B3 (en) * 2009-07-21 2011-01-27 Kammler, Dietmar, Dr. speaker
EP2280556A1 (en) 2009-07-21 2011-02-02 Dietmar Dr. Kammler Speaker

Similar Documents

Publication Publication Date Title
DE102004020605B4 (en) Vibration absorbing or compensating device, designed as housing accommodating mass element attached to helical springs
DE69308642T2 (en) Block for connecting or assembling profiled bars and assembling profiled bars made from them
DE202014011406U1 (en) Self-adjusting vibration damper and system that includes it
DE6931018U (en) DAMPING DEVICE FOR AIR SPRINGS.
DE3818552A1 (en) Vibration damping in loudspeaker housings by means of the bracing connection of opposite housing walls
EP3114361A1 (en) Fastening element for a current sensor
DE2425177B2 (en) Pressure transducer
DE2650480A1 (en) HANGING DEVICE
DE2458287A1 (en) Multi-purpose support frame construction - has C-shaped members with extensions to support feet and reinforcing struts
DE1953028U (en) VIBRATION REDUCER FOR DAMPING MECHANICAL VIBRATIONS IN A COMPONENT OR HOUSING, PREFERREDLY A TRANSFORMER HOUSING.
DE102006043209A1 (en) Assembly gauge, insert element for creating screw channels in a flat concrete element, wood / concrete composite element and wood / concrete composite structure
EP1070010B1 (en) Large transportable container, notably container suitable for air transport
DE2632574C2 (en) Device for damping vibrations on internal combustion engines
DE2633612A1 (en) ELASTIC HOLDER OR BUFFER
DE202007000776U1 (en) Mounting device for connecting e.g. wooden beams, has empty conduits that run out from base plate, where conduits exhibit spatial progression, such that screws take up screw path, which penetrates from one wooden unit to another wooden unit
DE29614089U1 (en) Device attachment on the underside of a rail vehicle undercarriage, in particular a local transport rail vehicle
EP2924314A1 (en) Vibration damper
DE112009004787T5 (en) GAS LASER OSCILLATOR
EP2256756B1 (en) Electric transformer or electric choke
EP1630311A2 (en) Sound absorbing device, specially for mounting on a ceiling or wall
DE966354C (en) Electrical feed-through capacitor
DE2131726A1 (en) Deformable metal profile for device housing for further processing
DE3115920C2 (en) Electromagnetic horn
DE2630163A1 (en) Framework for electronic appts. - has C-cross section members with corners formed from angle sections mounted at right angles on shaped plate
EP0007435A1 (en) Electro-acoustic transducer

Legal Events

Date Code Title Description
8122 Nonbinding interest in granting licenses declared
8139 Disposal/non-payment of the annual fee