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EP1499834A1 - Gas lighter - Google Patents

Gas lighter

Info

Publication number
EP1499834A1
EP1499834A1 EP03747153A EP03747153A EP1499834A1 EP 1499834 A1 EP1499834 A1 EP 1499834A1 EP 03747153 A EP03747153 A EP 03747153A EP 03747153 A EP03747153 A EP 03747153A EP 1499834 A1 EP1499834 A1 EP 1499834A1
Authority
EP
European Patent Office
Prior art keywords
tubular element
well
gas
tank
threaded ring
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Withdrawn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
EP03747153A
Other languages
German (de)
French (fr)
Inventor
Michel Doucet
René Frigiere
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.)
BIC SA
Original Assignee
BIC SA
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 BIC SA filed Critical BIC SA
Publication of EP1499834A1 publication Critical patent/EP1499834A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/16—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase
    • F23Q2/162—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase with non-adjustable gas flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/16—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase
    • F23Q2/162—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase with non-adjustable gas flame
    • F23Q2/163—Burners (gas valves)

Definitions

  • the present invention relates to gas lighters. More particularly, the invention relates to a gas lighter comprising a reservoir made of rigid amorphous polymer material having an upper wall traversed by a well and intended to contain a fuel at least partially in the liquid phase, a threaded ring screwed onto a tapped part of the well of the reservoir, and a gas distribution device comprising at least one tubular element fitted into the threaded ring.
  • Rigid amorphous polymers among which there may be mentioned the category of SAN (Styrene Acrylonitrile) or ABS (Acrylonitrile Butadiene Styrenes) have several advantages for the production of gas lighter tanks. Indeed, these polymers are generally inexpensive and easy to use. In addition, some rigid amorphous polymers, such as SAN, are transparent which has the advantage of being able to visualize the level of fuel in liquid phase remaining in the tank.
  • amorphous polymers are, in general, relatively brittle at room temperature because their elongation at the elastic limit is low, generally less than 5%. These polymers therefore do not withstand extension constraints because these cause micro-cracks and therefore gas leaks. In addition, their mechanical properties deteriorate with the aging of the material. This fragility prohibits any mounting of the gas distribution means by force fitting into the tank well, since such a fitting would create microcracks and therefore gas leaks.
  • a gas distribution device is used which can include, for example, as shown in FIG. from PCT filing O01 / 18452:
  • a wick 27 which extends from the bottom of the tank 3 to the well of the upper wall to supply liquid fuel, by capillary action, a chamber 23 called wetting chamber;
  • a porous foam element 25 having a face in contact with the wetting chamber and which ensures evaporation of the fuel in the liquid phase;
  • a tubular element 12 which has an annular seal 31 to ensure a certain seal between the wall of the tubular element radially oriented towards the outside and the wall of the well; a threaded ring 11 screwed into a tapped upper part of the well and into which is fitted the tubular element which compresses the foam element; and
  • a chimney 13 generally made of brass, slidingly mounted through the threaded ring and a lower part of which cooperates with the tubular element to form a valve for controlling the gas flow.
  • the main drawback of such a dispensing device is linked to the fact that the foam element does not make it possible to ensure a constant flow of gas and therefore a constant flame height.
  • This flow rate varies in particular depending on the internal pressure of the tank and the temperature.
  • the threaded ring is then most often provided with a manual control 37 so that the user can adjust the flame by more or less compressing the foam element.
  • the variation in flame height can be very significant.
  • a lighter of the kind in question is characterized in that the tubular element passes right through the threaded ring and has a lower part which extends at least as far as the lower end of the well and in which is arranged a micro-porous membrane ensuring a substantially constant gas flow.
  • micro-porous membrane which forms a device for regulating the gas flow, a constant flame height can be guaranteed.
  • These microporous membranes have pores whose size and orientation allow precise regulation of the gas flow, even if the internal face of the membrane is in contact with the gas phase or the liquid phase of the fuel. In addition, the reduced dimensions of these membranes favor the miniaturization of the lighter.
  • this microporous membrane and of the lower part of the tubular element also contributes to guaranteeing a controlled flame height.
  • the inventors of the present invention have been able to observe, during impact tests, phenomena of damage to the micro-porous membrane, leading to uncontrolled variations in the height of flames, when the lower part of the tubular member was disposed in an intermediate position between the upper and lower ends of the reservoir well.
  • the inventors of the present invention have been able to observe that, surprisingly, these phenomena disappear when a positioning of the tubular element in accordance with the present invention is adopted.
  • an annular seal is arranged between the tubular element and a central part the well which has a smooth wall; the well has a radially internal rim against which the annular seal is held in abutment by the threaded ring; the tubular element is metallic; the micro-porous membrane is held against an internal shoulder of the tubular element by pressing a ring, the tubular element having one end crimped against said ring; the tank comprises a tank having an upper end on which said upper wall is welded;
  • the tank is made of a material chosen from ABS and SAN.
  • FIG. 1 is a view in vertical section of a head of lighter according to an embodiment of the invention.
  • the gas lighter 1, represented in FIG. 1, comprises a tank 2 intended to contain a fuel under pressure and at least partially in the liquid phase, such as for example isobutane.
  • the tank is formed by a tank 3 with a U-section which has a bottom, not visible in the figure, and an annular side wall which extends upwards to an upper end 4 .
  • This upper end 4 is closed by an upper wall 5 which, in the example shown, is an attached part fixed for example by welding to the tank 3. '
  • the entire tank 2 is made of at least one rigid amorphous polymer material, chosen for example from ABS (Acrylonitrile Butadiene Styrene) and SANs
  • the tank 3 can be made of SAN and the upper wall 5 of ABS, these materials being able to be welded in a known manner, for example by ultrasonic welding.
  • the tank 3 and the upper wall 5 have relatively thick walls.
  • the upper wall 5 of the reservoir has a well 6 which extends vertically and which has a cylindrical shape of revolution.
  • a threaded ring 7 is screwed into a threaded part 8 of the well, in the example shown it is the upper part of the well.
  • a gas distribution device 10 which is actuated by a control device 11 carried by a head 12 of the lighter, which overcomes the tank 2.
  • This head 12 also forms a mounting support for a folding hood 13, as well as for an ignition device 14.
  • the ignition device can for example comprise a friction toothed wheel 15 and a stone 16 held in pressure against the toothed wheel by a spring 17 housed in a circular bowl 18 of the head 12.
  • a complementary bowl 19 is formed in the upper wall 5 of the tank to receive the bowl 18 of the head.
  • other types of ignitions such as for example a piezoelectric device.
  • the head 12 is retained on the upper wall 5 of the tank by lugs 20 of said head which cooperate by clipping with complementary lugs 21 coming from molding with the upper wall 5 of the tank.
  • the dispensing device 10 comprises a tubular element 23 which may advantageously be metallic and which may have a cylindrical shape of revolution.
  • This tubular element 23 is fitted into the threaded ring 7. It is preferably a force fitting to seal and immobilize the tubular member relative to the ring.
  • a micro-porous membrane 25 which ensures a constant flow of gas.
  • This membrane can be constituted by a polypropylene film stretched axially united and having pores of elongated shape, as described in patent US4496309.
  • the lower part 24 of the tubular element 23 extends beyond the lower end 6a of the well. In the embodiment shown, this lower part projects about 1 millimeter. This arrangement surprisingly allows avoid any damage to the porous membrane, even during tests simulating the fall of the lighter from a great height onto hard ground. While during the tests carried out with a lower part 24 of the tubular element opening into the well 6, damage to the membrane was observed and even its rupture in certain cases. ⁇
  • the bowl 19 of the upper wall 5 can extend towards the inside of the tank 2 without modifying the resistance of the micro-porous membrane to impacts.
  • the membrane 25 is held against an internal shoulder 26 of the tubular element 23 formed towards the lower part 24 of the said tubular element, the membrane 25 masking an orifice 27 formed in the center of the shoulder 26 and being pressed against the underside of said shoulder by a rigid ring 28 itself retained in the lower part of the tubular element by crimping 29 from the end of the lower part of the tubular element.
  • the dispensing device also comprises a valve formed by a tubular hollow body 31 which carries in its lower part a shutter such as an elastomer disc 32 adapted to close the aforementioned orifice 27.
  • the hollow body delimits a gas outlet conduit 33 which communicates with the interior of the tubular element 23 by means of slots 34 or the like formed in said hollow body and which opens near the ignition means 14.
  • the hollow body 31 has an outer wall which extends along most of the inner wall of the tubular element 23 in order to limit the loss of gas when the valve is open.
  • the tubular element 23 advantageously passes through the ring 7 right through so as to increase the axial length of the external wall of the hollow body in contact with the internal wall of the tubular element and consequently to improve the sealing between the tubular element (23) and the hollow body (31).
  • the fact that the tubular element passes right through the ring reduces the vertical size of the gas distribution device (10).
  • the control device 11 comprises a fork 35 tilting around an axis integral with the head 12.
  • a first end 36 of the fork 35 cooperates with a notch 37 formed in the upper part of the hollow body 31 so as to lift said hollow body when the user presses on the second end 38 of the fork.
  • a compression spring 39 is disposed between the underside of the second end 38 of the fork and the bottom 40 of a well formed in the upper wall of the reservoir.
  • annular seal 41 is disposed between the tubular element 23 and a middle part 42 of the well which has a smooth wall.
  • the quality of the surface condition of the middle part 42 of the well and the quality of the material used for the annular seal 41 can be chosen so as to obtain a satisfactory tightness of the reservoir.
  • the seal 41 is held in abutment against a radially internal rim 43 of the well by the threaded ring 7, which improves the seal.
  • the annular seal must not be strongly compressed against the rim 43 to avoid the appearance of cracks in the upper wall 5 of the tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

The invention concerns a gas lighter comprising a reservoir (2) made of rigid amorphous polymer material having an upper wall (5) traversed by a container (6) and designed to hold a fuel at least partly in liquid phase, a threaded ring (7) screwed on a tapped part (8) of the reservoir container, and a gas dispensing device (10) including at least one tubular element (23) fitted in the threaded ring. The tubular element (23) passes right through the threaded ring and comprises a lower part (24) which extends at least down to the lower end (6a) of the container and wherein is arranged a microporous membrane (25) providing a substantially constant gas glow.

Description

BRIQUET A GAZ GAS LIGHTER
La présente invention est relative aux briquets à gaz . Plus particulièrement, l'invention concerne un briquet à gaz comprenant un réservoir en matériau polymère amorphe rigide présentant une paroi supérieure traversée par un puits et destiné à contenir un combustible au moins partiellement en phase liquide, une bague filetée vissée sur une partie taraudée du puits du réservoir, et un dispositif de distribution de gaz comprenant au moins un élément tubulaire emmanché dans la bague filetée.The present invention relates to gas lighters. More particularly, the invention relates to a gas lighter comprising a reservoir made of rigid amorphous polymer material having an upper wall traversed by a well and intended to contain a fuel at least partially in the liquid phase, a threaded ring screwed onto a tapped part of the well of the reservoir, and a gas distribution device comprising at least one tubular element fitted into the threaded ring.
Les polymères amorphes rigides parmi lesquels on peut citer la catégorie des SAN (Styrène Acrylonitrile) ou des ABS (Acrylonitrile Butadiène Styrènes) présentent plusieurs avantages pour la réalisation de réservoir de briquets à gaz. En effet, ces polymères sont généralement peu coûteux et faciles à mettre en œuvre. De plus, certains polymères amorphes rigides, comme le SAN, sont transparents ce qui présente l'avantage de pouvoir visualiser le niveau de combustible en phase liquide restant dans le réservoir.Rigid amorphous polymers, among which there may be mentioned the category of SAN (Styrene Acrylonitrile) or ABS (Acrylonitrile Butadiene Styrenes) have several advantages for the production of gas lighter tanks. Indeed, these polymers are generally inexpensive and easy to use. In addition, some rigid amorphous polymers, such as SAN, are transparent which has the advantage of being able to visualize the level of fuel in liquid phase remaining in the tank.
Ces polymères amorphes sont, de manière générale, relativement cassants à température ambiante car leur allongement à la limite élastique est faible, généralement inférieure à 5%. Ces polymères ne supportent donc pas des contraintes d'extensions car celles-ci provoquent des micro-fissures et par conséquent des fuites de gaz. De plus, leurs propriétés mécaniques se dégradent avec le vieillissement du matériau. Cette fragilité interdit tout montage des moyens de distributions de gaz par emmanchement à force dans le puits du réservoir, car un tel emmanchement créerait des microfissures et donc des fuites de gaz. Pour ce type de briquet on utilise donc un dispositif de distribution de gaz qui peut comprendre par exemple, comme représenté à la figure 8 du dépôt PCT O01/18452 :These amorphous polymers are, in general, relatively brittle at room temperature because their elongation at the elastic limit is low, generally less than 5%. These polymers therefore do not withstand extension constraints because these cause micro-cracks and therefore gas leaks. In addition, their mechanical properties deteriorate with the aging of the material. This fragility prohibits any mounting of the gas distribution means by force fitting into the tank well, since such a fitting would create microcracks and therefore gas leaks. For this type of lighter, therefore, a gas distribution device is used which can include, for example, as shown in FIG. from PCT filing O01 / 18452:
- une mèche 27 qui s'étend du fond du réservoir 3 jusqu'au puits de la paroi supérieure pour alimenter en combustible liquide, par capillarité, une chambre 23 dite chambre de mouillage ;- A wick 27 which extends from the bottom of the tank 3 to the well of the upper wall to supply liquid fuel, by capillary action, a chamber 23 called wetting chamber;
- un élément en mousse poreuse 25 présentant une face en contact avec la chambre de mouillage et qui assure 1' évaporation du combustible en phase liquide ;- A porous foam element 25 having a face in contact with the wetting chamber and which ensures evaporation of the fuel in the liquid phase;
- un élément tubulaire 12 qui comporte un joint annulaire 31 pour assurer une certaine étanchéité entre la paroi de l'élément tubulaire radialement orienté vers l'extérieur et la paroi du puits ; une bague filetée 11 vissée dans une partie supérieure taraudée le du puits et dans laquelle est emmanché l'élément tubulaire qui comprime l'élément en mousse ; et- A tubular element 12 which has an annular seal 31 to ensure a certain seal between the wall of the tubular element radially oriented towards the outside and the wall of the well; a threaded ring 11 screwed into a tapped upper part of the well and into which is fitted the tubular element which compresses the foam element; and
- une cheminée 13, généralement en laiton, montée coulissante à travers la bague filetée et dont un partie inférieure coopère avec l'élément tubulaire pour former une valve de commande du débit de gaz.- A chimney 13, generally made of brass, slidingly mounted through the threaded ring and a lower part of which cooperates with the tubular element to form a valve for controlling the gas flow.
Le principal inconvénient d'un tel dispositif de distribution est lié au fait que l'élément en mousse ne permet pas d'assurer un débit constant de gaz et donc une hauteur de flamme constante. Ce débit varie notamment en fonction de la pression interne du réservoir et de la température. La bague filetée est alors le plus souvent munie d'un commande manuelle 37 pour que l'utilisateur puisse régler la flamme en compressant plus ou moins l'élément en mousse. Mais en cas de manipulation accidentelle ou involontaire de la commande de hauteur de flamme, comme cela arrive souvent avec un briquet de poche, la variation de la hauteur de flamme peut être très importante .The main drawback of such a dispensing device is linked to the fact that the foam element does not make it possible to ensure a constant flow of gas and therefore a constant flame height. This flow rate varies in particular depending on the internal pressure of the tank and the temperature. The threaded ring is then most often provided with a manual control 37 so that the user can adjust the flame by more or less compressing the foam element. However, in the event of accidental or involuntary manipulation of the flame height control, as often happens with a pocket lighter, the variation in flame height can be very significant.
La présente invention à pour but de pallier ces inconvénients. A cet effet, selon l'invention, un briquet du genre en question est caractérisé en ce que l'élément tubulaire traverse de part en part la bague filetée et comporte une partie inférieure qui se prolonge au moins jusqu'à l'extrémité inférieure du puits et dans laquelle est agencée une membrane micro-poreuse assurant un débit de gaz sensiblement constant .The present invention aims to overcome these drawbacks. To this end, according to the invention, a lighter of the kind in question is characterized in that the tubular element passes right through the threaded ring and has a lower part which extends at least as far as the lower end of the well and in which is arranged a micro-porous membrane ensuring a substantially constant gas flow.
Grâce à cette membrane micro-poreuse qui forme un dispositif de régulation du débit de gaz, on peut garantir une hauteur de flamme constante. Ces membranes microporeuse possèdent des pores dont la taille et l'orientation permettent de réguler de manière précise le débit de gaz, et ceci même si la face interne de la membrane est en contact avec la phase gazeuse ou la phase liquide du combustible. De plus, les dimensions réduites de ces membranes favorisent la miniaturisation du briquet.Thanks to this micro-porous membrane which forms a device for regulating the gas flow, a constant flame height can be guaranteed. These microporous membranes have pores whose size and orientation allow precise regulation of the gas flow, even if the internal face of the membrane is in contact with the gas phase or the liquid phase of the fuel. In addition, the reduced dimensions of these membranes favor the miniaturization of the lighter.
En outre, la position de cette membrane microporeuse et de la partie inférieure de l'élément tubulaire contribue également à garantir une hauteur de flamme contrôlée.In addition, the position of this microporous membrane and of the lower part of the tubular element also contributes to guaranteeing a controlled flame height.
En effet, les inventeurs de la présente invention ont pu constater, au cours d'essais de chocs, des phénomènes d' endommagement de la membrane micro-poreuse, conduisant à des variations non contrôlées de la hauteur de flammes, lorsque la partie inférieure de l'élément tubulaire était disposée dans une position intermédiaire entre les extrémités supérieure et inférieure du puits du réservoir.Indeed, the inventors of the present invention have been able to observe, during impact tests, phenomena of damage to the micro-porous membrane, leading to uncontrolled variations in the height of flames, when the lower part of the tubular member was disposed in an intermediate position between the upper and lower ends of the reservoir well.
Ces phénomènes d' endommagement , qui se produisent spécifiquement lorsque le réservoir est réalisé en polymère amorphe rigide, par exemple en SAN ou autre, apparaissent lors de certains essais de chocs destinés à simuler la chute du briquet d'une grande hauteur, auquel cas il se produit dans le réservoir une onde de chocs qui compte tenu de la rigidité du réservoir, est transmise intégralement vers la partie supérieure du briquet et est canalisée dans le puits du réservoir jusqu'à la membrane micro-poreuse.These damage phenomena, which occur specifically when the tank is made of rigid amorphous polymer, for example SAN or other, appear during certain impact tests intended to simulate the fall of the lighter from a great height, in which case it occurs in the tank a shock wave which taking into account the rigidity of the tank, is transmitted in full towards the upper part of the lighter and is channeled in the tank well to the micro-porous membrane.
Les inventeurs de la présente invention ont pu constater que, de façon surprenante, ces phénomènes disparaissent lorsqu'on adopte un positionnement de l'élément tubulaire conforme à la présente invention.The inventors of the present invention have been able to observe that, surprisingly, these phenomena disappear when a positioning of the tubular element in accordance with the present invention is adopted.
Dans des formes de réalisations préférées de l'invention, on a recours, en outre, à l'une et ou à l'autre des dispositions suivantes : - un joint d'étanchéité annulaire est disposé entre l'élément tubulaire et une partie médiane du puits qui présente une paroi lisse ; le puits comporte un rebord radialement interne contre lequel le joint d'étanchéité annulaire est maintenu en appui par la bague filetée ; l'élément tubulaire est métallique ; la membrane micro-poreuse est maintenue contre un épaulement intérieur de l'élément tubulaire par appui d'un anneau, l'élément tubulaire présentant une extrémité sertie contre ledit anneau ; le réservoir comporte une cuve présentant une extrémité supérieure sur laquelle est soudée ladite paroi supérieure ;In preferred embodiments of the invention, recourse is also had to one or the other of the following arrangements: - an annular seal is arranged between the tubular element and a central part the well which has a smooth wall; the well has a radially internal rim against which the annular seal is held in abutment by the threaded ring; the tubular element is metallic; the micro-porous membrane is held against an internal shoulder of the tubular element by pressing a ring, the tubular element having one end crimped against said ring; the tank comprises a tank having an upper end on which said upper wall is welded;
- le réservoir est formé en un matériau choisi parmi les ABS et les SAN.- the tank is made of a material chosen from ABS and SAN.
D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre, donnée à titre d'exemple non limitatif, en référence au dessin annexé dans lequel la figure 1 est une vue en coupe verticale d'une tête de briquet selon une forme de réalisation de l'invention.Other characteristics and advantages of the invention will appear during the description which follows, given by way of nonlimiting example, with reference to the appended drawing in which FIG. 1 is a view in vertical section of a head of lighter according to an embodiment of the invention.
Le briquet à gaz 1, représenté à la figure 1, comprend un réservoir 2 destiné à contenir un combustible sous pression et au moins partiellement en phase liquide, tel que par exemple l' isobutane. Dans le mode de réalisation représenté, le réservoir est formé d'une cuve 3 à section en U qui présente un fond, non visible sur la figure, et une paroi latérale annulaire qui s'étend vers le haut jusqu'à une extrémité supérieure 4.The gas lighter 1, represented in FIG. 1, comprises a tank 2 intended to contain a fuel under pressure and at least partially in the liquid phase, such as for example isobutane. In the embodiment shown, the tank is formed by a tank 3 with a U-section which has a bottom, not visible in the figure, and an annular side wall which extends upwards to an upper end 4 .
Cette extrémité supérieure 4 est fermée par une paroi supérieure 5 qui, dans l'exemple représenté, est une pièce rapportée fixée par exemple par soudure sur la cuve 3. 'This upper end 4 is closed by an upper wall 5 which, in the example shown, is an attached part fixed for example by welding to the tank 3. '
L'ensemble du réservoir 2 est réalisé en au moins un matériau polymère amorphe rigide, choisi par exemple parmi les ABS (Acrylonitrile Butadiène Styrène) et les SANThe entire tank 2 is made of at least one rigid amorphous polymer material, chosen for example from ABS (Acrylonitrile Butadiene Styrene) and SANs
(Styrène Acrylonitrile). A titre d'exemple, la cuve 3 peut être réalisée en SAN et la paroi supérieure 5 en ABS, ces matériaux pouvant être soudés de manière connue, par exemple par soudure ultrasons.(Acrylonitrile styrene). By way of example, the tank 3 can be made of SAN and the upper wall 5 of ABS, these materials being able to be welded in a known manner, for example by ultrasonic welding.
L'avantage de ces polymères amorphes rigides est notamment qu'ils sont peu coûteux et faciles à mettre en œuvre. De plus, certains d'entre eux, comme le SAN, sont transparents, ce qui permet à l'utilisateur de contrôler le niveau de combustible en phase liquide restant dans le réservoir .The advantage of these rigid amorphous polymers is in particular that they are inexpensive and easy to use. In addition, some of them, like the SAN, are transparent, which allows the user to control the level of liquid phase fuel remaining in the tank.
Compte tenu de la pression de gaz régnant à l'intérieur du réservoir, la cuve 3 et la paroi supérieure 5 présentent des parois relativement épaisses. La paroi supérieure 5 du réservoir comporte un puits 6 qui s'étend verticalement et qui présente une forme cylindrique de révolution.Given the gas pressure prevailing inside the tank, the tank 3 and the upper wall 5 have relatively thick walls. The upper wall 5 of the reservoir has a well 6 which extends vertically and which has a cylindrical shape of revolution.
Une bague filetée 7 est vissée dans une partie taraudée 8 du puits, dans l'exemple représenté il s'agit de la partie supérieure du puits.A threaded ring 7 is screwed into a threaded part 8 of the well, in the example shown it is the upper part of the well.
Dans ce puits 6 est disposé un dispositif de distribution de gaz 10 qui est actionné par un dispositif de commande 11 porté par une tête 12 du briquet, qui surmonte le réservoir 2. Cette tête 12 forme également un support de montage pour un capot paravent 13, ainsi que pour un dispositif d'allumage 14.In this well 6 is disposed a gas distribution device 10 which is actuated by a control device 11 carried by a head 12 of the lighter, which overcomes the tank 2. This head 12 also forms a mounting support for a folding hood 13, as well as for an ignition device 14.
Le dispositif d'allumage, connu en soi, peut comprendre par exemple une roue dentée de friction 15 et une pierre 16 maintenue en pression contre la roue dentée par un ressort 17 logé dans une cuvette circulaire 18 de la tête 12. Une cuvette complémentaire 19 est formée dans la paroi supérieure 5 du réservoir pour recevoir la cuvette 18 de la tête. Mais bien entendu, il est possible d'utiliser d'autres types d'allumages, comme par exemple un dispositif piézo-électrique .The ignition device, known per se, can for example comprise a friction toothed wheel 15 and a stone 16 held in pressure against the toothed wheel by a spring 17 housed in a circular bowl 18 of the head 12. A complementary bowl 19 is formed in the upper wall 5 of the tank to receive the bowl 18 of the head. But of course, it is possible to use other types of ignitions, such as for example a piezoelectric device.
Dans le mode de réalisation représenté, la tête 12 est retenue sur la paroi supérieure 5 du réservoir par des ergots 20 de ladite tête qui coopèrent par clipsage avec des ergots complémentaires 21 venus de moulage avec la paroi supérieure 5 du réservoir .In the embodiment shown, the head 12 is retained on the upper wall 5 of the tank by lugs 20 of said head which cooperate by clipping with complementary lugs 21 coming from molding with the upper wall 5 of the tank.
Le dispositif de distribution 10 comporte un élément tubulaire 23 qui peut avantageusement être métallique et qui peut présenter une forme cylindrique de révolution. Cet élément tubulaire 23 est emmanché dans la bague filetée 7. Il s'agit préférentiellement d'un emmanchement à force pour assurer l'étanchéité et l'immobilisation de l'élément tubulaire par rapport à la bague . Dans une partie inférieure 24 de l'élément tubulaire est agencé une membrane micro-poreuse 25 qui assure un débit constant de gaz. Cette membrane peut être constituée par un film de polypropylène étiré uni axialement et présentant des pores de forme allongée, tel que décrit dans le brevet US4496309.The dispensing device 10 comprises a tubular element 23 which may advantageously be metallic and which may have a cylindrical shape of revolution. This tubular element 23 is fitted into the threaded ring 7. It is preferably a force fitting to seal and immobilize the tubular member relative to the ring. In a lower part 24 of the tubular element is arranged a micro-porous membrane 25 which ensures a constant flow of gas. This membrane can be constituted by a polypropylene film stretched axially united and having pores of elongated shape, as described in patent US4496309.
Selon l'invention, la partie inférieure 24 de l'élément tubulaire 23 se prolonge au-delà de l'extrémité inférieure 6a du puits. Dans le mode de réalisation représenté cette partie inférieure dépasse d'environ 1 millimètre. Cette disposition permet de manière surprenante d'éviter tout endommagement de la membrane poreuse, même lors d'essais simulant la chute d'une grande hauteur du briquet sur un sol dur. Tandis qu'au cours des essais effectués avec une partie inférieure 24 de l'élément tubulaire débouchant dans le puits 6, on a constaté un endommagement de la membrane et même sa rupture dans certains cas. ιAccording to the invention, the lower part 24 of the tubular element 23 extends beyond the lower end 6a of the well. In the embodiment shown, this lower part projects about 1 millimeter. This arrangement surprisingly allows avoid any damage to the porous membrane, even during tests simulating the fall of the lighter from a great height onto hard ground. While during the tests carried out with a lower part 24 of the tubular element opening into the well 6, damage to the membrane was observed and even its rupture in certain cases. ι
Les essais montrent qu'il suffit que l'extrémité de la partie inférieure 24 affleure à la surface intérieure 5a de la paroi supérieure 5 du réservoir pour éviter d'endommager la membrane.The tests show that it is sufficient for the end of the lower part 24 to be flush with the internal surface 5a of the upper wall 5 of the tank to avoid damaging the membrane.
On notera que la cuvette 19 de la paroi supérieure 5 peut s'étendre vers l'intérieur du réservoir 2 sans modifier la résistance de la membrane micro-poreuse aux chocs .Note that the bowl 19 of the upper wall 5 can extend towards the inside of the tank 2 without modifying the resistance of the micro-porous membrane to impacts.
De manière préférentielle la membrane 25 est maintenue contre un epaulement intérieur 26 de l'élément tubulaire 23 formé vers la partie inférieure 24 du dudit élément tubulaire, la membrane 25 masquant un orifice 27 formé au centre de 1 ' epaulement 26 et étant plaqué contre la face inférieure dudit epaulement par un anneau rigide 28 lui-même retenu en partie inférieure de l'élément tubulaire par sertissage 29 de l'extrémité de la partie inférieure de élément tubulaire. Le dispositif de distribution comporte également une valve formée d'un corps creux tubulaire 31 qui porte dans sa partie inférieure un obturateur tel qu'un disque en élastomère 32 adapté pour obturer l'orifice 27 susmentionné. Le corps creux délimite un conduit de sortie de gaz 33 qui communique avec l'intérieur de l'élément tubulaire 23 par l'intermédiaire de fentes 34 ou similaires ménagées dans ledit corps creux et qui débouche à proximité des moyens d'allumages 14.Preferably, the membrane 25 is held against an internal shoulder 26 of the tubular element 23 formed towards the lower part 24 of the said tubular element, the membrane 25 masking an orifice 27 formed in the center of the shoulder 26 and being pressed against the underside of said shoulder by a rigid ring 28 itself retained in the lower part of the tubular element by crimping 29 from the end of the lower part of the tubular element. The dispensing device also comprises a valve formed by a tubular hollow body 31 which carries in its lower part a shutter such as an elastomer disc 32 adapted to close the aforementioned orifice 27. The hollow body delimits a gas outlet conduit 33 which communicates with the interior of the tubular element 23 by means of slots 34 or the like formed in said hollow body and which opens near the ignition means 14.
Le corps creux 31 présente une paroi extérieure qui s'étend le long de la majeure partie de la paroi intérieure de l'élément tubulaire 23 afin de limiter les pertes de gaz lorsque la valve est ouverte. On notera que l'élément tubulaire 23 traverse avantageusement la bague 7 de part en part afin d'augmenter la longueur axiale de la paroi extérieure du corps creux en contact avec la paroi intérieure de l'élément tubulaire et par conséquent d'améliorer l'étanchéité entre l'élément tubulaire (23) et le corps creux (31) . De plus, le fait que l'élément tubulaire traverse de part en part la bague permet de réduire l'encombrement vertical du dispositif de distribution de gaz (10) .The hollow body 31 has an outer wall which extends along most of the inner wall of the tubular element 23 in order to limit the loss of gas when the valve is open. It will be noted that the tubular element 23 advantageously passes through the ring 7 right through so as to increase the axial length of the external wall of the hollow body in contact with the internal wall of the tubular element and consequently to improve the sealing between the tubular element (23) and the hollow body (31). In addition, the fact that the tubular element passes right through the ring reduces the vertical size of the gas distribution device (10).
Le dispositif de commande 11 comprend une fourchette 35 basculante autour d'un axe solidaire de la tête 12. Une première extrémité 36 de la fourchette 35 coopère avec une echancrure 37 formé en partie supérieure du corps creux 31 de manière à soulever ledit corps creux lorsque l'utilisateur appuie sur la deuxième extrémité 38 de la fourchette. Afin de maintenir la valve obturée en position de repos, un ressort de compression 39 est disposé entre la face inférieure de la deuxième extrémité 38 de la fourchette et le fond 40 d'un puits formé dans la paroi supérieure du réservoir.The control device 11 comprises a fork 35 tilting around an axis integral with the head 12. A first end 36 of the fork 35 cooperates with a notch 37 formed in the upper part of the hollow body 31 so as to lift said hollow body when the user presses on the second end 38 of the fork. In order to keep the valve closed in the rest position, a compression spring 39 is disposed between the underside of the second end 38 of the fork and the bottom 40 of a well formed in the upper wall of the reservoir.
Afin d'assurer l'étanchéité du réservoir, un joint annulaire 41 est disposé entre l'élément tubulaire 23 et une partie médiane 42 du puits qui présente une paroi lisse. La qualité de l'état de surface de la partie médiane 42 du puits et la qualité du matériau employé pour le joint annulaire 41 peuvent être choisies de manière à obtenir une étanchéité satisfaisante du réservoir. De plus, le joint d'étanchéité 41 est maintenu en appui contre un rebord radialement interne 43 du puits par la bague filetée 7, ce qui améliore l'étanchéité. Toutefois le joint annulaire ne doit pas être fortement comprimé contre le rebord 43 pour éviter l'apparition de fissure dans la paroi supérieur 5 du réservoir. In order to ensure the tightness of the reservoir, an annular seal 41 is disposed between the tubular element 23 and a middle part 42 of the well which has a smooth wall. The quality of the surface condition of the middle part 42 of the well and the quality of the material used for the annular seal 41 can be chosen so as to obtain a satisfactory tightness of the reservoir. In addition, the seal 41 is held in abutment against a radially internal rim 43 of the well by the threaded ring 7, which improves the seal. However, the annular seal must not be strongly compressed against the rim 43 to avoid the appearance of cracks in the upper wall 5 of the tank.

Claims

REVENDICATIONS
1. Briquet à gaz comportant un réservoir (2) en matériau polymère amorphe rigide présentant une paroi supérieure (5) traversée par un puits (6) et destiné à contenir un combustible au moins partiellement en phase liquide, une bague filetée (7) vissée sur une partie taraudée (8) du puits du réservoir, et un dispositif de distribution de gaz (10) comprenant au moins un élément tubulaire (23) emmanché dans la bague filetée, caractérisé en ce que l'élément tubulaire (23) traverse de part en part la bague filetée (7) et comporte une partie inférieure (24) qui se prolonge au moins jusqu'à l'extrémité inférieure (6a) du puits et dans laquelle est agencée une membrane micro-poreuse (25) assurant un débit de gaz sensiblement constant .1. Gas lighter comprising a reservoir (2) made of rigid amorphous polymer material having an upper wall (5) traversed by a well (6) and intended to contain a fuel at least partially in liquid phase, a threaded ring (7) screwed on a threaded part (8) of the reservoir well, and a gas distribution device (10) comprising at least one tubular element (23) fitted into the threaded ring, characterized in that the tubular element (23) passes through right through the threaded ring (7) and comprises a lower part (24) which extends at least to the lower end (6a) of the well and in which is arranged a micro-porous membrane (25) ensuring a flow substantially constant gas.
2. Briquet à gaz selon la revendication 1, dans lequel un joint d'étanchéité annulaire (41) est disposé entre l'élément tubulaire (23) et une partie médiane (42) du puits (6) qui présente une paroi lisse.2. A gas lighter according to claim 1, in which an annular seal (41) is arranged between the tubular element (23) and a middle part (42) of the well (6) which has a smooth wall.
3. Briquet à gaz selon la revendication 2, dans lequel le puits (6) comporte un rebord radialement interne (43) contre lequel le joint d'étanchéité annulaire (41) est maintenu en appui par la bague filetée (7) .3. A gas lighter according to claim 2, in which the well (6) has a radially internal rim (43) against which the annular seal (41) is held in abutment by the threaded ring (7).
4. Briquet à gaz selon l'une quelconque des revendications 1 a 3, dans lequel l'élément tubulaire (23) est métallique.4. Gas lighter according to any one of claims 1 to 3, wherein the tubular element (23) is metallic.
5. Briquet à gaz selon la revendication 4, dans lequel la membrane micro-poreuse (25) est maintenue contre un epaulement intérieur (26) de l'élément tubulaire (23) par appui d'un anneau (28), l'élément tubulaire (23) présentant une extrémité inférieure (29) sertie contre ledit anneau (28) . 5. A gas lighter according to claim 4, in which the micro-porous membrane (25) is held against an internal shoulder (26) of the tubular element (23) by pressing a ring (28), the element tubular (23) having a lower end (29) crimped against said ring (28).
6. Briquet selon l'une quelconque des revendications 1 à 5, dans lequel le réservoir (2) comporte une cuve (3) présentant une extrémité supérieure (4) sur laquelle est soudée la paroi supérieure (7) .6. Lighter according to any one of Claims 1 to 5, in which the tank (2) comprises a tank (3) having an upper end (4) on which the upper wall (7) is welded.
7. Briquet selon l'une quelconque des revendications l à 6, dans lequel le réservoir (2) est formé en un matériau choisi parmi les ABS et les SAN. 7. Lighter according to any one of claims l to 6, wherein the tank (2) is formed of a material chosen from ABS and SAN.
EP03747153A 2002-04-26 2003-04-23 Gas lighter Withdrawn EP1499834A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0205297A FR2839142B1 (en) 2002-04-26 2002-04-26 GAS LIGHTER
FR0205297 2002-04-26
PCT/FR2003/001283 WO2003091628A1 (en) 2002-04-26 2003-04-23 Gas lighter

Publications (1)

Publication Number Publication Date
EP1499834A1 true EP1499834A1 (en) 2005-01-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03747153A Withdrawn EP1499834A1 (en) 2002-04-26 2003-04-23 Gas lighter

Country Status (10)

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US (1) US20040152030A1 (en)
EP (1) EP1499834A1 (en)
JP (1) JP2005527770A (en)
CN (1) CN1650132A (en)
AU (1) AU2003246854A1 (en)
BR (1) BR0308120A (en)
CA (1) CA2476185A1 (en)
FR (1) FR2839142B1 (en)
MX (1) MXPA04008576A (en)
WO (1) WO2003091628A1 (en)

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ES2774278T3 (en) * 2010-12-09 2020-07-20 SOCIéTé BIC Valve assembly for a lighter and a gas lighter comprising said valve assembly
CA2888167C (en) * 2012-10-12 2020-01-07 Societe Bic Valve assembly for a gas lighter
CN109307281B (en) * 2018-12-01 2021-12-07 邵东弘邦电子有限公司 Dual-purpose ignition device

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Also Published As

Publication number Publication date
JP2005527770A (en) 2005-09-15
AU2003246854A1 (en) 2003-11-10
CA2476185A1 (en) 2003-11-06
FR2839142B1 (en) 2005-01-14
US20040152030A1 (en) 2004-08-05
MXPA04008576A (en) 2004-12-06
FR2839142A1 (en) 2003-10-31
CN1650132A (en) 2005-08-03
WO2003091628A1 (en) 2003-11-06
BR0308120A (en) 2005-01-04

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