EP0236460B1 - Drucklufthorn - Google Patents

Drucklufthorn Download PDF

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Publication number
EP0236460B1
EP0236460B1 EP86905773A EP86905773A EP0236460B1 EP 0236460 B1 EP0236460 B1 EP 0236460B1 EP 86905773 A EP86905773 A EP 86905773A EP 86905773 A EP86905773 A EP 86905773A EP 0236460 B1 EP0236460 B1 EP 0236460B1
Authority
EP
European Patent Office
Prior art keywords
sheet
compressed
ring
casing
metal
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
Application number
EP86905773A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0236460A1 (de
Inventor
Jörg Fischer
Peter Weimann
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 AT86905773T priority Critical patent/ATE47925T1/de
Publication of EP0236460A1 publication Critical patent/EP0236460A1/de
Application granted granted Critical
Publication of EP0236460B1 publication Critical patent/EP0236460B1/de
Expired 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
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
    • G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air

Definitions

  • the invention relates to a compressed air horn, with a housing part, a bottom part connected thereto, a pipe socket arranged on the inside of the housing part, a sound funnel held in an opening of the housing part and communicating with the pipe socket, a compressed air duct leading into the housing part and one between the housing part and the bottom part fixed, against the pipe socket membrane, the housing part having a jacket ring rotatably connected to a jacket ring with an axial circumferential step, the bottom part has a bottom ring rotatably connected to a sheet metal ring with an axial circumferential step and a jacket ring arranged therein.
  • Compressed air horns of this type are attached to the superstructure of trucks or ships and are operated to produce highly audible horn tones with high air pressures of up to 10 bar, the pitch depending on the length of the air column formed by the horn, the operating pressure, the membrane thickness and tension and others Parameters.
  • the bell and the casing are constantly exposed to the weather and therefore corrosive stress.
  • FR-A-468 378 describes a compressed air horn in which the membrane is held between two rings which are inserted within two housing parts which are screwed together.
  • the outer edge of the sheet metal base directly encompasses the outwardly folded peripheral edge of the sheet metal housing and is permanently fixed to it by inwardly folded tabs, the membrane being clamped between the two sheet metal parts .
  • the tension of the membrane can be changed by means of drawn curvatures in the sheet metal base.
  • this construction does not result in a uniform clamping of the membrane over the circumference and no satisfactory sound quality. It is also hardly possible to remove the sheet metal base for membrane replacement without damage.
  • a car horn is also known in which the housing part and the base part are thick-walled castings which are detachably connected by circumferentially spaced threaded holes in the housing part and screws screwed into them.
  • This configuration is not only very difficult and expensive to manufacture, but also does not result in the membrane being clamped uniformly over the circumference.
  • a complex post-processing and chrome plating of the cast parts is necessary, which sooner or later begins to flake off, which considerably affects the appearance of the compressed air horn.
  • the object of the invention is now to provide a compressed air horn of the type mentioned, which results in better, easily adjustable clay properties with inexpensive manufacture and high weather resistance, the membrane holder should not require any additional support rings.
  • the housing halves should be easily detachable for changing the membrane.
  • the compressed air horn should have a permanently weather-resistant, attractive appearance even without chrome plating.
  • the pneumatic horn of the type mentioned is equipped according to the invention with the features of claim 1.
  • This air horn combines various advantages.
  • the weatherproof sheet metal parts can be easily and inexpensively manufactured so stably by pressing or other cold forming that they can withstand the high operating pressure without deformation. Since stainless steel sheet is very easy to polish, the desired high gloss can be achieved by simply polishing without chrome plating.
  • the solid screwable rings do not have to be made of corrosion-resistant material, since they are completely covered on the outside by weather-resistant sheet metal. The screwing of the rings ensures that the diaphragm is firmly clamped over the entire circumference, which prevents tone fluctuations and makes it easier to adjust the tone.
  • the simple construction comprises only a few individual parts, so that the compressed air horn can be manufactured in a straightforward manner, easily installed and easily screwed apart for changing the membrane.
  • the compressed air horn 1 shown in the figures comprises a housing 2 comprising a housing part 4 and a base part 5, as well as a sound funnel 3 with a straight tube section A of constant diameter inserted into an opening of the housing part 4, followed by a cone section which widens evenly towards the mouth B and an adjoining, trumpet-like opening section C.
  • Sections A, B and C, each produced by pressing from stainless steel sheet, are connected by weld seams running in the circumferential direction.
  • the horn 3 can also in bent in one piece from stainless steel sheet and closed by longitudinal welding.
  • the housing part 4 comprises a sheet metal jacket 40 made of stainless steel sheet and a jacket ring 6 enclosed by the latter in a clamped fit End wall 45 and an inner tube 46 adjoining this, which forms a central opening for inserting tube section A of sound horn 3.
  • the jacket ring 6 is inserted into the sheet metal jacket 40 so that its outer peripheral surface is closely enclosed by the inner surface of the peripheral wall 42 and an outer edge lies at an angle between the cone section 41 and the peripheral wall 42. In this position, the casing ring 6 is clamped in a rotationally fixed manner to the sheet metal casing part 40 by an edge web 43 which is flanged radially inwards onto its outer wall.
  • the jacket ring 6 has on the side facing away from the cone section 41 a radially inwardly facing axial peripheral step 62, to which a radially inwardly projecting annular web 61 with an axially outwardly facing membrane mounting surface 64 is connected.
  • An internal thread 63 is cut into the circumferential step 62.
  • the base part 5 comprises a sheet metal base 50 made of stainless steel sheet with a central end wall 55, an outwardly adjoining cone wall 51, an annular wall 52 extending radially outward from the outer edge thereof and an axial circumferential wall 53 adjoining the outer edge and corresponding to the circumferential wall 42 of the sheet metal jacket 40.
  • the bottom ring 7 is closely enclosed on its outer circumferential surface by the inner surface of the circumferential wall 53 and is connected in a rotationally fixed manner to the sheet metal jacket 50 in the position axially against the annular wall 52 by flanging over an edge web 54 attached to the circumferential wall 53.
  • the bottom ring 7 has an axial ring web 71 which carries a radially outwardly facing, axial peripheral step 72 with an external thread 72 which can be screwed to the internal thread 63 of the casing ring 6.
  • the circumferential step 72 ends in an axial membrane mounting surface 74, which is designed as part of the end closure of the ring web 71.
  • the thread engagement of the internal thread 63 with the external thread 73 which extends over the entire circumference of the housing 2, ensures a uniform clamping and application of force to the outer edge of the membrane and thus a fluctuation-free membrane sound.
  • the bottom part 5 can be unscrewed quickly and easily from the housing part.
  • polygonal tool engagement surfaces (not shown) can also be provided in the sheet metal base 50.
  • the jacket ring 6 has a radial, with an opening in the circumferential wall 42 of the sheet metal jacket 40 compressed air channel 12 with an internal thread 13 in its outer portion for screwing in a threaded nipple 14. This is used for connection to a vehicle-side compressed air supply line 17 and at the same time for fastening of the compressed air horn 1 on the vehicle and for fixing a conical base part 11 made of stainless steel sheet, against which a rubber washer 15 and a spring washer 16 rest. This saves additional holes in the outer skin of the vehicle to carry out bolts and not only reduces the effort involved in fastening, but also the risk of corrosion.
  • the base part 5 with the external thread 73 of the base ring 7 is firmly screwed to the internal thread 63 of the casing ring 6, the membrane 8 being clamped evenly all around between the membrane mounting surfaces 64 and 74.
  • a sealing ring 9 pushed onto the ring web 71 of the base ring 7 is pressed in between the casing ring 6 and the base ring 7 in the screwed-together state of the housing 2 and prevents the penetration of moisture etc.
  • the end section of the sound funnel 3 is clamped into the inner tube 46 in the clamp seat of the sheet metal jacket 4 inserted and is supported in the region of its mouth section C by a holder 18.
  • the pipe socket 10 can also be formed by a correspondingly widened section of the inner pipe 46, provided that it protrudes axially a predetermined distance a beyond the plane of the membrane mounting surface 64.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Diaphragms And Bellows (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP86905773A 1985-09-11 1986-09-08 Drucklufthorn Expired EP0236460B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86905773T ATE47925T1 (de) 1985-09-11 1986-09-08 Drucklufthorn.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853532324 DE3532324A1 (de) 1985-09-11 1985-09-11 Drucklufthorn
DE3532324 1985-09-11

Publications (2)

Publication Number Publication Date
EP0236460A1 EP0236460A1 (de) 1987-09-16
EP0236460B1 true EP0236460B1 (de) 1989-11-08

Family

ID=6280609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86905773A Expired EP0236460B1 (de) 1985-09-11 1986-09-08 Drucklufthorn

Country Status (5)

Country Link
US (1) US4829930A (enrdf_load_stackoverflow)
EP (1) EP0236460B1 (enrdf_load_stackoverflow)
JP (1) JPS63500900A (enrdf_load_stackoverflow)
DE (2) DE3532324A1 (enrdf_load_stackoverflow)
WO (1) WO1987001850A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078074A (en) * 1990-03-22 1992-01-07 Gomez Laurence B Vehicle horn
FR2672415B1 (fr) * 1991-02-06 1995-05-05 Bourin Francois Xavier Dispositif d'assemblage de deux parties consecutives d'un instrument de musique a vent.
US5662064A (en) * 1991-10-30 1997-09-02 Gyoergy; Laszlo High acoustic output horn
US6294984B1 (en) 2000-02-03 2001-09-25 Tom Meister Air horn assembly
US7063040B2 (en) * 2004-04-20 2006-06-20 David Terry Woods Portable air horn apparatus
DE102010054835A1 (de) 2010-12-16 2012-06-21 Rainer Mang Drucklufthornpistole
HU4091U (en) * 2011-10-21 2012-02-28 Laszlo Gyoergy Commercial horn

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR468378A (fr) * 1913-04-22 1914-07-04 Etienne Teste Dispositif vibrateur pour avertisseurs
US1281877A (en) * 1913-08-19 1918-10-15 Etienne Teste Automobile-horn.
US1267060A (en) * 1913-10-15 1918-05-21 Benjamin Electric Mfg Co Electric horn.
US1183676A (en) * 1914-04-11 1916-05-16 Thomas Crosbee & Sons Ltd Audible electric signaling device.
FR475735A (fr) * 1914-07-25 1915-06-10 Louis Guetton Dangon Avertisseur pour automobiles et autres applications
US2173951A (en) * 1937-07-30 1939-09-26 Westinghouse Air Brake Co Pneumatic horn
US2370939A (en) * 1942-08-19 1945-03-06 Keystone Signalphone Company Sound-emitting device
US2840032A (en) * 1956-05-10 1958-06-24 Falcon Alarm Company Inc Portable signalling device
US3000344A (en) * 1957-02-25 1961-09-19 Ferrell Donald Power horn
US2918895A (en) * 1957-03-14 1959-12-29 Roy D Buell Fluid powered horn
GB1267199A (enrdf_load_stackoverflow) * 1968-05-31 1972-03-15
US4171678A (en) * 1977-07-22 1979-10-23 Midland-Ross Corporation Air horn
FR2483660A1 (fr) * 1980-05-30 1981-12-04 Klaxon Sa Perfectionnements aux avertisseurs sonores pneumatiques
IT1154511B (it) * 1982-08-27 1987-01-21 Leonardo Beltrame Base per unita' acustica perfezionata per trombe elettropneumatiche

Also Published As

Publication number Publication date
EP0236460A1 (de) 1987-09-16
JPS63500900A (ja) 1988-03-31
WO1987001850A1 (fr) 1987-03-26
DE3532324C2 (enrdf_load_stackoverflow) 1988-03-10
DE3666889D1 (en) 1989-12-14
DE3532324A1 (de) 1987-03-19
US4829930A (en) 1989-05-16

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