EP0843873B1 - Avertisseur sonore a dispositif d'antiparasitage incorpore - Google Patents

Avertisseur sonore a dispositif d'antiparasitage incorpore Download PDF

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Publication number
EP0843873B1
EP0843873B1 EP96926460A EP96926460A EP0843873B1 EP 0843873 B1 EP0843873 B1 EP 0843873B1 EP 96926460 A EP96926460 A EP 96926460A EP 96926460 A EP96926460 A EP 96926460A EP 0843873 B1 EP0843873 B1 EP 0843873B1
Authority
EP
European Patent Office
Prior art keywords
breaker
contact
warning device
rivet
audible warning
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
EP96926460A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0843873A1 (fr
Inventor
Gilbert Hurst
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.)
Compagnie Europeenne de Composants Electroniques LCC CICE
Original Assignee
Compagnie Europeenne de Composants Electroniques LCC CICE
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 Compagnie Europeenne de Composants Electroniques LCC CICE filed Critical Compagnie Europeenne de Composants Electroniques LCC CICE
Publication of EP0843873A1 publication Critical patent/EP0843873A1/fr
Application granted granted Critical
Publication of EP0843873B1 publication Critical patent/EP0843873B1/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
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G10K9/15—Self-interrupting arrangements

Definitions

  • the present invention as defined in the claims relates to audible warning devices, in particular for equipment of land vehicles.
  • Known horns present on the market have a coil in the air gap of which can move an integral plunger of a membrane whose vibration produces a sound.
  • the coil is powered by through a breaker whose opening and closing control the reciprocating movement of the membrane.
  • This electric arc renewed at frequency alarm operation, provides a signal very broad spectrum parasitic radioelectric.
  • Such signal may be harmful to other equipment, especially especially electronic, vehicle.
  • EP-A-O 237 727 we know a audible warning device with anti-interference device incorporated.
  • This alarm includes, inside a metal envelope closed by a flexible membrane integral with a plunger core, a coil inside from which the plunger core and a breaker with isolated upper and lower arms to come into contact only through their parts of contact.
  • the breaker is mounted on the enclosure by means a rivet isolated from it, and a varistor is mounted to suppress the spurious signal which is generated by the electric arc produced each time the contact parts of the breaker.
  • the object of the present invention is to remedy the above mentioned drawbacks of known audible warning devices and it proposes for this purpose to modify these known alarms which, without complicating the realization of the alarm or significantly increase the cost of it, allows to rule out any harmful effect of the alarm, when operation of it, on the equipment in private individuals whose carrier vehicle is provided.
  • the audible warning device is of the type comprising, inside an envelope metal closed by a flexible membrane secured to a plunger core, a coil in which can introduce the said plunger core and a breaker whose the upper and lower arms are insulated to avoid come into contact only through their contact parts the breaker being mounted on said casing by a rivet isolated from the latter. It is characterized by a varistor mounted across the breaker and whose effect suppresses the spurious signal generated by the electric arc product each time the contact parts of the breaker.
  • the metallized varistor on each side is mounted on the body of the rivet while being isolated from it, and is pressed between the two arms of the breaker, opposite the said parts of contact, making contact with each of said arms.
  • the washer forming a varistor is isolated from the rivet, on which it is mounted, by an extension of the carcass of the coil.
  • the invention provides for the stiffening of the upper arm of the breaker so that when riveting, the rivet pressure is applied to the varistor ceramic in a uniform manner and flat (i.e. without overhang).
  • the shoulder presented by the plunger core and intended to engage the lower arm of the breaker, to separate the contact parts thereof carries a washer insulating, preferably forcibly engaged in a groove of the plunger core.
  • FIG. 1 there is shown the actuating part of a conventional horn. It includes a metal casing 1 closed at its front part by an elastic metallic membrane 2.
  • the metal casing 1 is provided with a fixed core 3 engaged in the center of the carcass 4 of a coil 5.
  • a plunger core 6, integral with the membrane 2, is located opposite the fixed core 3.
  • a breaker 7 comprising an upper arm 8 and an arm lower 9 between which is mounted an insulating part 10, the latter having an opening through which the contact parts meet respective 11.12 of the arms 8.9 of the breaker.
  • the breaker 7 is fixed by a rivet 13 forming a tongue, which passes through the casing 1, the shell 4, the arm 9, the insulating part 10 and the arm 8, being isolated by an insulating washer 14, of the mass of the housing 1.
  • the tongue of the rivet 13 serves input for electric current.
  • the lower arm 9 of the breaker 7 is in electrical contact with the input wire 15 of the coil 5, but is isolated from rivet 13.
  • the output wire 16 of the coil 5 is connected electrically, via a washer metallic 17, to a rivet 18 forming a tongue of outlet, which assembles the carcass 4 to the casing 1, a insulating washer 19 insulating the rivet 18 from the mass of envelope 1.
  • each opening of the breaker contacts gives rise to the formation of an electric arc between the contact parts 11,12 of the breaker 7.
  • This arc electric renewed at operating frequency of the horn, provides a radio signal very broad spectrum parasite which may be harmful for other equipment, in particular electronic, of the vehicle.
  • a varistor is mounted at the terminals of the breaker 7.
  • This varistor produced in the form a washer 21 (that is to say a disc provided with a hole central and on the opposite sides of which the contacts are taken at the touch of a button), is mounted on the rivet 13 between the upper breaker arms 8 and lower 9 by replacing the insulation of the breaker 10 of the conventional device of figure 1.
  • carcass 4 of the winding 5 then has a centering pin 22 disposed between the rivet 13 and the varistor 21.
  • the stiffening of the upper arm 8 of the breaker 7 of so that during riveting the pressure of the rivet 7 is applied to the varistor ceramic of a uniform and flat, i.e. without door to false.
  • the lower arm 9 of the breaker 7 is found during certain phases of the operation, at an electrical potential equal to that of the input tab 13.
  • the plunger core 6 is finds him at the potential of envelope 1 whose mounting mechanical on the chassis of the user vehicle will have the effect of fixing the potential to ground, that is to say at least from the battery. It is therefore essential, under penalty of short circuit, that none of the elements of the breaker 7, and in particular the arm lower 9 of it, is not in contact electric with one of the elements of the envelope metallic 1 of the horn, including the membrane 2 and the plunger 6

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Burglar Alarm Systems (AREA)
  • Breakers (AREA)
  • Emergency Alarm Devices (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Catching Or Destruction (AREA)
EP96926460A 1995-07-26 1996-07-25 Avertisseur sonore a dispositif d'antiparasitage incorpore Expired - Lifetime EP0843873B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9509066A FR2737334B1 (fr) 1995-07-26 1995-07-26 Avertisseur sonore a dispositif d'antiparasitage incorpore
FR9509066 1995-07-26
PCT/FR1996/001170 WO1997005601A1 (fr) 1995-07-26 1996-07-25 Avertisseur sonore a dispositif d'antiparasitage incorpore

Publications (2)

Publication Number Publication Date
EP0843873A1 EP0843873A1 (fr) 1998-05-27
EP0843873B1 true EP0843873B1 (fr) 1999-10-20

Family

ID=9481389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96926460A Expired - Lifetime EP0843873B1 (fr) 1995-07-26 1996-07-25 Avertisseur sonore a dispositif d'antiparasitage incorpore

Country Status (9)

Country Link
EP (1) EP0843873B1 (da)
AT (1) ATE185922T1 (da)
AU (1) AU6663296A (da)
DE (1) DE69604811T2 (da)
DK (1) DK0843873T3 (da)
ES (1) ES2141522T3 (da)
FR (1) FR2737334B1 (da)
PT (1) PT843873E (da)
WO (1) WO1997005601A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853506B4 (de) * 1998-11-20 2008-01-31 Robert Bosch Gmbh Akustischer Signalgeber
FR2910167A1 (fr) * 2006-12-14 2008-06-20 Composants Electr Sa Soc D Avertisseur sonore comprenant une bobine produisant un flux electromagnetique et un element ferromagnetique apte a confiner le flux au voisinage immediat de la bobine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349183A (en) * 1929-03-18 1931-05-28 Moto Meter Gauge & Equip Corp Improvements in audible traffic signal or warning devices
US2145711A (en) * 1934-04-19 1939-01-31 Gen Motors Corp Sounding signal device
US2598994A (en) * 1949-07-28 1952-06-03 Russell A Gougeon Electromagnetically operated signal producing resonator device
DE3123877C1 (de) * 1981-06-16 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Überbrückungsschalter für Elektrolysezellen
DE3608761A1 (de) * 1986-03-15 1987-09-17 Hella Kg Hueck & Co Elektromagnetisches signalhorn

Also Published As

Publication number Publication date
ES2141522T3 (es) 2000-03-16
DE69604811D1 (de) 1999-11-25
PT843873E (pt) 2000-04-28
DE69604811T2 (de) 2000-06-29
AU6663296A (en) 1997-02-26
EP0843873A1 (fr) 1998-05-27
ATE185922T1 (de) 1999-11-15
DK0843873T3 (da) 2000-04-25
FR2737334B1 (fr) 1997-10-17
WO1997005601A1 (fr) 1997-02-13
FR2737334A1 (fr) 1997-01-31

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