EP0732545B1 - Allume-gaz piézo-électrique - Google Patents

Allume-gaz piézo-électrique Download PDF

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Publication number
EP0732545B1
EP0732545B1 EP19960101651 EP96101651A EP0732545B1 EP 0732545 B1 EP0732545 B1 EP 0732545B1 EP 19960101651 EP19960101651 EP 19960101651 EP 96101651 A EP96101651 A EP 96101651A EP 0732545 B1 EP0732545 B1 EP 0732545B1
Authority
EP
European Patent Office
Prior art keywords
piezoelectric
gas lighter
tubular extension
lighter according
extension
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
EP19960101651
Other languages
German (de)
English (en)
Other versions
EP0732545A1 (fr
Inventor
Sergio Dr. Bonometti
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.)
ELB Srl
Original Assignee
ELB Srl
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Filing date
Publication date
Application filed by ELB Srl filed Critical ELB Srl
Publication of EP0732545A1 publication Critical patent/EP0732545A1/fr
Application granted granted Critical
Publication of EP0732545B1 publication Critical patent/EP0732545B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/002—Igniters using electrically-produced sparks using piezoelectric elements

Definitions

  • This invention relates to a piezoelectric gas lighter.
  • this invention relates to a piezoelectric gas lighter comprising a mechanism with ceramic elements which, subject to strike, generate at each activation the formation of a spark in correspondence of an end electrode.
  • Piezoelectric cartridge devices generating sparks have been known for a long time and are commonly utilized in house kitchen for lighting kitchen gas-rings.
  • said gas lighters are formed by a plurality of components mutually connected to one another.
  • the container where the piezoelectric unit is housed is generally formed by two half-shells, preferably from plastic material, connected through screws.
  • the activating push-button, connected to said piezoelectric unit comprises in the container special strikers and a sliding seat.
  • the mechanism provided with ceramic elements which are subject to strike during the activation of the push-button must be stably fixed to said container.
  • a further component is constituted by a small tube, preferably from metal, where the lead coming out of the piezoelectric unit passes and extends up to the front end of said tube, in correspondence of which the end electrode forming the sparks is obtained. Also this tube must be strongly connected to the container, which is provided for this purpose with special seats with guide and centering ribs.
  • Conventional gas lighters require also an electric connection between the mass of the mechanism and the metal tube.
  • Object of this invention is to obviate the aforementioned drawback.
  • object of this invention is to provide a piezoelectric gas lighter of the one-spark tipe formed by a reduced number of components, whose assembly can be performed in a quick a simple way, with no need for special equipments to connect the individual components.
  • a further object of this invention is to provide a piezoelectric gas lighter such as to ensure a high degree of resistance and reliability in the time, and besides such as to be easily and economically realizable.
  • the piezoelectric gas lighter of this invention comprises an envelope housing the piezoelectric one-spark strike mechanism with the related lead, which envelope is formed by two complementary elements or bodies: a first back body and a second front body, provided each with means for the quick mutual connection.
  • the first front body extends in its upper part into an integral tubular extention wherein the lead passes, and, in its lower part, into a protruding sector, slightly spaced from said tubular extension, which develops inside said body forming a seat in which the piezoelectric mechanism is fixed.
  • the first back element or body (12) has, according to a preferred embodiment, a substantially glass-shaped configuration, whose open fore-front (12') circumscribes the engagement-seat of the second complementary element or body (14).
  • Said first body (12) is formed by a sector having a more extended wall and a diametral sector having a wall less extended that the first one.
  • a rib (20) is obtained which extends starting from the internal back wall, forming a longitudinally extended flange of reduced thickness.
  • Rib (20) extends in body (12) for a length equal to about two thirds of the most extended wall of said body, which in the representation illustrated by way of example in Figs. 1 and 2 corresponds to the upper diametral sector.
  • mouth (12') of body (12) is slightly lowered.
  • a through-opening is formed (24), having, by way of example, a rectangular shape and a limited extension.
  • a protrusion (26) snap-fits, which the second front element or body (14) is provided with.
  • Said second front body (14) has a round section, with an open back front (14'), with a diameter slightly shorter than the diameter of the first complementary body (12), so that it can be engaged in said first body (12).
  • the upper half-part of the second body (14) is frontally extended into an integral tubular extension (28).
  • the front end of said tubular extension (28) is open and a drilled end-piece (30), of which more will be said in the following, is engaged in said front end.
  • the tubular extension (28) is provided with a through-opening (32) having, by way of example, a rectangular shape, circumscribed on the front by a protrusion (34).
  • the second body (14) is provided with a substantially cylindrical portion which develops from its lower fore-front, under the tubular extension (28), circumscribing a protruding sector (36), slightly spaced from the above tubular extension (28).
  • Said sector (36) forms an extension of the second body (14) in the part under the aforementioned extension (28) and extends inside said body, forming a substantially glass-shaped integral seat (38), without back wall.
  • the internal diameter of said glass-shaped seat (28) is slightly greater than the diameter of the piezoelectric mechanism (16) which is inserted in the same.
  • the fore-front of sector (36), slightly spaced from extension (28) is closed by a wall (40) having preferably a round shape. Said wall (40) forms the grip-point for the movement of the piezoelectric mechanism, as will be precised later on.
  • the glass-shaped seat (38) is preferably provided with a through-milling (38'), longitudinally extended and substantially aligned with the axis of extension (28). Said milling (38') forms the guide wherein lead (18) abuts in its stating part which develops from the piezoelectric mechanism (16).
  • the end-piece (30), which is pressure-fitted on the fore-front of the tubular extension (28), is formed by a core from pastic material, preferably analogous to the one that forms the first body and the second body (12, 14), and is provided with an axial hole (30') for the passage of the end of lead (18).
  • On said extension (18) o small metal tube (42) is fitted, provided on its upper end with conventional openings (44) and an end electrode (46).
  • Said end electrode (46) facing lead (18) causes the formation of the spark as a consequence of the activation of the piezoelectric mechanism (16).
  • a through-opening (38) is formed wherein protrusion (34) fits in, said protrusion being obtained before opening (32).
  • Sector (36) is provided, in its wall that exdends in the back in the inside of body (14), with a lowering (50) which forms a striking wall for the piezoelectric mechanism (16).
  • the latter is inserted, during the assembly stage of the gas lighter, in seat (38) of the second body (14) and rests, with its front end, agsinst said lowering (50), facing the through-opening (32) obtained on the tubular extension (28).
  • Wire (18), coming out of the piezoelectric mechanism (16) runs along the through-milling (38') of seat (38), which extends in the front part into the aforementioned tubular extension (28), protruding from the same for a reduced length.
  • the end-piece (30) On the free front end of lead (18) the end-piece (30) is fitted on, which is provided with hole (30'), to house said end.
  • extension (28) the metal tube (42) is fitted on which abuts, with its back end portion, the metal forefront of the piezoelectric mechanism (16) facing the through-opening (32), closing the electric circuit.
  • Tube (42) is kept in position by protrusion (34) formed on the wall of extension (28), which elastically engages in the through-opening obtained on said tube.
  • the second front element or body (14) is then fitten in mouth (12') of the first back element or body (12); the coupling is made in a very easy and quick manner, as protrusion (26) obtained on body (14) snap-inserts into the through-opening (24) obtained on the first body (12), as the latter has a diameter slightly greater than the diameter of the second body (14).
  • the connection of the two bodies (12, 14) causes the back end of the cartridge or the piezoelectric mechanism (16) to strike rib (20) created inside the first back body (12).
  • the through-opening (24) is sized according to the travel of the mobile part of said cartridge (16), so that protrusion (26) of body (14) abuts in its more advanced part and allows a suufficient backwards movement of said body during the activation of the gas lighter (10).
  • cartridge (16) is activated by the pressure exercized on the protruding sector (36) which forms the activating push-button, causing the formation of the spark between the lower end of lead (18) and the end electrode (46).
  • cartridge (16) which is provided with a conventional spring, goes back to its starting position, pushing forwards the front body (14) up to the point where protrusion (26) meets the front end of the through-opening (24).
  • the complementary back and front bodies might have different configuration and section compared with what has been described and illustrated by way of example and be connected to one another by means of several protrusions and corresponding through-openings.
  • the front body (14) wherein the seat of the piezoelectric mechanism is formed might be obtained fully from metal, excluding the presence of the end-piece, the metal tube fitted on the tubular extension, and the through-opening facing said piezoelectric mechanism.
  • an insulating bushing might be provided between the lead of the aforementioned mechanism and the internal surface of the tubular extension on which it rests.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Claims (9)

  1. Allume-gaz piézoélectrique (10) comprenant une gaine comportant un mécanisme piézoélectrique (16) de type à génération d'une étincelle unique, et une conduite correspondante (18), caractérisé en ce que cette gaine est formée par deux éléments ou corps complémentaires (12, 14) : un corps postérieur (12) et un corps antérieur (14), munis de moyens pour leur assemblage rapide, la partie postérieure du corps antérieur (14) s'étendant dans un prolongement tubulaire solidaire (28) dans lequel passe la conduite (18), et sa partie inférieure s'étendant dans une partie en saillie (36) légèrement écartée du prolongement tubulaire (28) qui s'étend depuis le corps antérieur (14) en formant un siège (38) dans lequel est logé le mécanisme piézoélectrique (16).
  2. Allume-gaz piézoélectrique selon la revendication 1, dans lequel la gaine formée par les deux éléments ou corps complémentaires (12, 14) forme en même temps le siège logeant le mécanisme piézoélectrique (16), la poignée, le bouton-poussoir d'activation dudit mécanisme, et un prolongement tubulaire (21) pour la conduite (18).
  3. Allume-gaz piézoélectrique selon la revendication 1 ou 2, charactérisé en ce que le corps postérieur (12) a une configuration en forme de verre dans laquelle la partie avant ouverte (14) circonscrit le siège d'engagement du corps antérieur complémentaire (14) muni d'une partie postérieure sensiblement cylindrique dont le diamètre est légèrement inférieur au diamètre du corps postérieur (12), ledit corps postérieur comportant une nervure (20) qui s'étend à partir de la paroi interne postérieure (22) et forme une collerette d'épaisseur réduite s'étendant dans la direction longitudinale.
  4. Allume-gaz piézoélectrique selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps postérieur (12) est muni, au voisinage de l'embouchure (12'), d'une ouverture traversante (24), et le corps antérieur (14) est muni d'une saillie (26) qui s'emboíte dans l'ouverture traversante (24).
  5. Allume-gaz piézoélectrique selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extension vers l'intérieur du deuxième corps (14) de la partie en saillie (36) forme un siège (38) ayant sensiblement la forme d'un verre, sans paroi postérieure, et muni d'un fraisage traversant (38') d'étendue longitudinale et aligné avec l'axe du prolongement (28), un abaissement (50) qui forme la paroi de frappe pour le mécanisme piézoélectrique (16) étant obtenu dans cette partie (36).
  6. Allume-gaz piézoélectrique selon l'une quelconque des revendications précédentes, caractérisé en ce que le prolongement tubulaire (28) présente, en correspondance avec son extrémité postérieure, une ouverture traversante (32) à laquelle fait face ou de laquelle fait saillie l'élément de masse du mécanisme piézoélectrique (16).
  7. Allume-gaz piézoélectrique selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un petit tube métallique (42) est agencé sur le prolongement tubulaire (21), ce tube comportant à son extrémité une ou plusieurs ouvertures (44) et une électrode terminale (46), et à son extrémité postérieure, une ouverture traversante (48) dans laquelle vient en butée un prolongement (34) qui a été formé avant l'ouverture (32) du prolongement (28).
  8. Allume-gaz piézoélectrique selon l'une quelconque des revendications 3 à 7, caractérisé en ce que le corps postérieur qui comporte la nervure interne (20), et le corps antérieur (14) qui comporte le prolongement tubulaire solidaire (28), la partie en saillie (36), et le siège interne (38) du mécanisme piézoélectrique (16) sont réalisés en une matière plastique.
  9. Allume-gaz piézoélectrique selon l'une quelconque des revendications 3 à 7, caractérisé en ce que le corps postérieur qui comporte la nervure interne (20), et le corps antérieur (14) qui comporte le prolongement tubulaire solidaire (28), le secteur en saillie (36) et le siège inteme (38) du mécanisme piézoélectrique (16) sont en métal.
EP19960101651 1995-03-16 1996-02-06 Allume-gaz piézo-électrique Expired - Lifetime EP0732545B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI950182U 1995-03-16
ITMI950182 IT236741Y1 (it) 1995-03-16 1995-03-16 Accendigas piezoelettrico perfezionato

Publications (2)

Publication Number Publication Date
EP0732545A1 EP0732545A1 (fr) 1996-09-18
EP0732545B1 true EP0732545B1 (fr) 1999-05-06

Family

ID=11370409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960101651 Expired - Lifetime EP0732545B1 (fr) 1995-03-16 1996-02-06 Allume-gaz piézo-électrique

Country Status (4)

Country Link
EP (1) EP0732545B1 (fr)
DE (1) DE69602303D1 (fr)
ES (1) ES2131355T3 (fr)
IT (1) IT236741Y1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527546B1 (en) 1997-01-22 2003-03-04 Bic Corporation Utility lighter
US6332771B1 (en) 1997-01-22 2001-12-25 Bic Corporation Utility lighter
US6065958A (en) * 1997-01-22 2000-05-23 Bic Corporation Utility lighter
US5934895A (en) * 1997-01-22 1999-08-10 Bic Corporation Utility lighter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA708184B (en) * 1970-02-11 1972-05-31 Ind Commercial Inmobiliaria Y An electric gas lighter
FR2251783A1 (en) * 1973-11-19 1975-06-13 Elektrolume Sa Hand held piezoelectric gas lighter - has two arms squeezed together to operate mechanism
US3947731A (en) * 1974-01-01 1976-03-30 Manufactura de Articulos para el Hogar "Aurora" Sociedad Anonima Industrial Comercial, Inmobiliaria y Financiera Piezoelectric lighter

Also Published As

Publication number Publication date
ITMI950182U1 (it) 1996-09-16
ES2131355T3 (es) 1999-07-16
IT236741Y1 (it) 2000-08-17
EP0732545A1 (fr) 1996-09-18
DE69602303D1 (de) 1999-06-10
ITMI950182V0 (it) 1995-03-16

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