EP0337067B1 - Avertisseur sonore, en particulier pour véhicules - Google Patents

Avertisseur sonore, en particulier pour véhicules Download PDF

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Publication number
EP0337067B1
EP0337067B1 EP89102306A EP89102306A EP0337067B1 EP 0337067 B1 EP0337067 B1 EP 0337067B1 EP 89102306 A EP89102306 A EP 89102306A EP 89102306 A EP89102306 A EP 89102306A EP 0337067 B1 EP0337067 B1 EP 0337067B1
Authority
EP
European Patent Office
Prior art keywords
funnel
passage
opening
signalling
horn
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
EP89102306A
Other languages
German (de)
English (en)
Other versions
EP0337067A2 (fr
EP0337067A3 (en
Inventor
Werner Kukuk
Stefan Gepfert
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0337067A2 publication Critical patent/EP0337067A2/fr
Publication of EP0337067A3 publication Critical patent/EP0337067A3/de
Application granted granted Critical
Publication of EP0337067B1 publication Critical patent/EP0337067B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/22—Mountings; Casings

Definitions

  • the invention relates to a signal horn, in particular for motor vehicles, with a membrane which is moved by a drive and which acts on a pressure chamber, with a funnel which connects to the pressure chamber, which is wound up parallel to the membrane and which ends in a sound outlet opening and further means for connecting a portion of the horn to the surrounding air.
  • Such a bugle is known from DE-AS 12 56 115.
  • a channel is provided there for venting a room, which contains the electromagnetic drive for the membrane in order to prevent the membrane from being preloaded by a closed room.
  • the known bugle has disadvantages, since no measures are given to remove water from the horn of the bugle, which can form due to condensation in the hopper or which can be caused by a water surge, e.g. when driving the motor vehicle through rain through the sound outlet opening can get into the funnel.
  • water in the funnel impedes the sound transformation of the funnel and can thus lead to a sound that is attenuated in volume or even to a complete failure of the signal horn via a sound distortion.
  • a signal horn which has a funnel.
  • the funnel At a predetermined mounting position of the signal horn, the funnel has an opening which points essentially downward and which is adjoined by a channel.
  • the funnel of this known horn is not wound parallel to the membrane. The channel provided there does not point downwards when the signal horn is installed in a predetermined position.
  • EP 0 302 258 A1 describes a signal horn, in particular for motor vehicles, which has a membrane which is moved by a drive and which acts on a pressure chamber.
  • a funnel connects to the pressure chamber, which is wound parallel to the membrane and ends with a sound outlet opening.
  • a signal horn for motor vehicles is known, which is provided with a funnel wound parallel to the membrane. In addition to the sound outlet opening, however, no further means for connecting a part of the signal horn to the surrounding air are shown there.
  • the object of the invention is to create a signal horn in which the sound emitted by water in the funnel is avoided.
  • the funnel in addition to the sound outlet opening, has an essentially downward-pointing further opening at a winding lying at the deepest point for a given mounting position of the signal horn, to which an essentially downward-pointing channel leading to the air surrounding the signal horn is directed concludes that the length of the channel is such that because of the given resonance frequencies of the channel, they do not correspond in frequency to the harmonic level-determining harmonics generated by the signal horn, and that the channel extends from the deepest turn to the sound outlet opening.
  • an essentially downward-pointing channel is also provided, which connects to the opening.
  • the channel is an open tube that is quasi "open" acoustically only for its resonant frequencies, but acts like an acoustic closure for the frequency ranges in between. In these intermediate areas, there is therefore no appreciable weakening of the frequency components conducted within the funnel.
  • the length of the channel depends on the frequency position of the harmonics generated by the signal horn.
  • the sound of the bugle is composed of a number of harmonics.
  • the lowest harmonic is called the fundamental and the frequencies of the higher harmonics are an even multiple of the fundamental.
  • the length of the channel can then be selected depending on the position of these frequencies. This takes advantage of the fact that the channel has the acoustic properties of an open tube that draws vibrational energy from the funnel in its resonance frequencies, but blocks this energy transport in the frequency ranges in between.
  • the channel extends from the deepest turn to the sound outlet opening, because with the usually in the Motor vehicle used horns the length of the channel is then in the advantageous range of about 2 ... 6 cm.
  • the signal horn according to the invention thus has the advantage over the known one that water located in the funnel can run out of the funnel via the opening and the channel, and so that an adverse impairment of the sound by water in the funnel is avoided.
  • the channel can be used to prevent the influences of the opening, which impair the sound of the signal horn, in certain frequency ranges.
  • only a channel is required, so that the signal horn according to the invention with the above-mentioned acoustic advantages can be constructed simply and inexpensively.
  • horns with funnels When used in motor vehicles, horns with funnels are used, the volume-determining harmonics of which are between 1000 ... 3000 Hz. With such signal horns, it has proven particularly advantageous proven when the length of the channel is about 2 ... 6 cm. This applies in particular to channel cross sections of 3 ... 9 square millimeters.
  • the cross-sectional area of the opening is larger than 3 square millimeters.
  • a quick drain of the water from the funnel is guaranteed, but the effective acoustic effectiveness of the channel decreases due to the effects of the mouth.
  • a maximum cross-sectional area of 9 square millimeters has proven to be the upper limit.
  • the cross-sectional area of the channel is approximately equal to the cross-sectional area of the opening and if the channel and / or opening have a round cross-section.
  • the single figure shows a signal horn according to the invention which is attached to the motor vehicle with the membrane plane perpendicular to the direction of travel and whose sound outlet opening is arranged parallel to the membrane plane.
  • the sound outlet opening (5) thus hangs down and points to the road on which the motor vehicle is moving.
  • a funnel (1) is shown, which connects to a pressure chamber, which is not recognizable in the figure behind the funnel.
  • the membrane also not shown, is also located behind the funnel, approximately parallel to the plane of the drawing.
  • the drive of the horn according to the invention is also covered by the funnel (1).
  • the funnel (1) opens into a sound outlet opening (5) and has a downward and deepest turn (2) which has an essentially downward opening (3).
  • the opening (3) merges into an essentially downward-pointing channel (4) which is arranged in such a way that the channel (4) extends from the lowest lying turn (2) to the sound outlet opening (5).
  • the signal horn according to the invention is fastened to the body of the motor vehicle (not shown in the figure) by a fastening tab (6).
  • the measure according to the invention can thus reliably prevent falsification of the sound emitted by the signal horn according to the invention by water in the funnel (1).

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Elimination Of Static Electricity (AREA)
  • Traffic Control Systems (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Claims (7)

  1. Klaxon, en particulier pour véhicules, comprenant une membrane qui est déplacée par un entraînement et agit sur une chambre de pression, un pavillon (1) qui est contigu à la chambre de pression, déroulé de manière parallèle à la membrane et qui se termine dans une ouverture de sortie du son (5), et d'autres moyens pour raccorder une partie du klaxon à l'air environnant, caractérisé en ce que le pavillon (1) présente, à côté de l'ouverture de sortie du son (5), sur un enroulement (2) situé au plus bas dans la position de montage prédéterminée du klaxon, une autre ouverture (3) orientée essentiellement vers le bas et à laquelle est raccordé un canal (4) orienté vers le bas conduisant à l'air entourant le klaxon, en ce que la longueur du canal (4) est choisie de telle manière que les fréquences de résonance du canal (4) ne concordent pas du point de vue de la fréquence avec les harmoniques déterminant le niveau sonore engendré par le klaxon, et en ce que le canal (4) va de l'enroulement le plus bas (2) à l'ouverture de sortie du son (5).
  2. Klaxon selon la revendication 1, caractérisé en ce que le canal (4) et/ou l'ouverture (3) présentent une section ronde.
  3. Klaxon selon la revendication 1, caractérisé en ce que la superficie de la section transversale du canal (4) est égale à la superficie de l'ouverture (3).
  4. Klaxon selon la revendication 1, caractérisé en ce que la longueur du canal (4) est d'environ 2 à 6 cm.
  5. Klaxon selon la revendication 4, caractérisé en ce que la longueur du canal (4) est d'environ 3,5 cm.
  6. Klaxon selon la revendication 1, caractérisé en ce que la superficie de l'ouverture (3) est d'environ 3 à 9 millimètres carrés.
  7. Klaxon selon la revendication 1, caractérisé en ce que le pavillon (1) et le canal (4) sont réalisés ensemble d'une seule pièce en matière plastique injectée.
EP89102306A 1988-04-12 1989-02-10 Avertisseur sonore, en particulier pour véhicules Expired - Lifetime EP0337067B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812096 1988-04-12
DE3812096A DE3812096A1 (de) 1988-04-12 1988-04-12 Signalhorn, insbesondere fuer kraftfahrzeuge

Publications (3)

Publication Number Publication Date
EP0337067A2 EP0337067A2 (fr) 1989-10-18
EP0337067A3 EP0337067A3 (en) 1990-02-28
EP0337067B1 true EP0337067B1 (fr) 1994-06-01

Family

ID=6351788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102306A Expired - Lifetime EP0337067B1 (fr) 1988-04-12 1989-02-10 Avertisseur sonore, en particulier pour véhicules

Country Status (6)

Country Link
EP (1) EP0337067B1 (fr)
AT (1) ATE106589T1 (fr)
DD (1) DD283874A5 (fr)
DE (1) DE3812096A1 (fr)
ES (1) ES2053827T3 (fr)
HK (1) HK145694A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU209356B (en) * 1991-10-30 1994-04-28 Gyoergy Membrane sound producing apparatus actuated by pressure fluid
DE19743664A1 (de) * 1997-10-02 1999-04-08 Bosch Gmbh Robert Akustischer Signalgeber
US7980193B1 (en) * 2009-06-09 2011-07-19 Brunswick Corporation Pressure lock marine horn

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689543A (en) * 1952-04-22 1954-09-21 Louis E Lemmon Motor vehicle horn guard
GB1036715A (en) * 1961-10-24 1966-07-20 Service Electric Company Ltd Sound producing apparatus
DE1256115B (de) * 1962-07-05 1967-12-07 Villmeca Sa Elektromagnetische Hupe
IT1047018B (it) * 1974-03-25 1980-09-10 Frigo D Avvisatore acustico pneumatico con cornetti accoppiati avvolti a chiocciola e complanari
US4212001A (en) * 1976-08-31 1980-07-08 Nippondenso Co., Ltd. Electric horn
DE2904265A1 (de) * 1979-02-05 1980-08-07 Westfaelische Metall Industrie Verfahren zum verbinden eines metallteils und eines kunststoffteils, insbesondere zum herstellen eines elektromagnetischen signalgebers, insbesondere eines horns fuer kraftfahrzeuge
US4433750A (en) * 1981-02-23 1984-02-28 Sparton Corporation Synthetic horn projector with metal insert
DE3641620C1 (en) * 1986-12-05 1988-06-30 Hella Kg Hueck & Co Signal transmitter for motor vehicles, in particular electropneumatic horn

Also Published As

Publication number Publication date
EP0337067A2 (fr) 1989-10-18
ES2053827T3 (es) 1994-08-01
HK145694A (en) 1994-12-30
EP0337067A3 (en) 1990-02-28
DE3812096A1 (de) 1989-10-26
DD283874A5 (de) 1990-10-24
ATE106589T1 (de) 1994-06-15
DE3812096C2 (fr) 1990-06-21

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