EP0374246B1 - Safety lighter - Google Patents

Safety lighter Download PDF

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Publication number
EP0374246B1
EP0374246B1 EP89908222A EP89908222A EP0374246B1 EP 0374246 B1 EP0374246 B1 EP 0374246B1 EP 89908222 A EP89908222 A EP 89908222A EP 89908222 A EP89908222 A EP 89908222A EP 0374246 B1 EP0374246 B1 EP 0374246B1
Authority
EP
European Patent Office
Prior art keywords
lighter
catch
pushbutton
notch
pusher
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
EP89908222A
Other languages
German (de)
French (fr)
Other versions
EP0374246A1 (en
Inventor
Henri Ansquer
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.)
Hameur et Cie
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Hameur et Cie
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
Priority claimed from FR8808912A external-priority patent/FR2633702B1/en
Priority claimed from FR8809387A external-priority patent/FR2634004A1/en
Application filed by Hameur et Cie filed Critical Hameur et Cie
Priority to AT89908222T priority Critical patent/ATE86029T1/en
Publication of EP0374246A1 publication Critical patent/EP0374246A1/en
Application granted granted Critical
Publication of EP0374246B1 publication Critical patent/EP0374246B1/en
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
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/16—Lighters with gaseous fuel, e.g. the gas being stored in liquid phase
    • F23Q2/164—Arrangements for preventing undesired ignition
    • 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
    • F23Q2/34—Component parts or accessories
    • F23Q2/46—Friction wheels; Arrangement of friction wheels

Definitions

  • the present invention relates to a safety lighter, with operational safety, which can only be lit after an arming operation.
  • the gas lighters currently manufactured generally include a reserve of liquefied gas, a regulator, a burner and an ignition assembly with stone and knurl.
  • the burner is movable in translation and its movement allows or not the passage of the expanded gas. It is known to control the movements of the burner using a tilting pusher, on which the user's thumb comes, after having turned the ignition wheel (which is in contact with the stone in the case traditional ignition). The tilting movement of the pusher lifts the burner head, which allows the expanded gas to rise towards the sparks.
  • piezoelectric ignition it is the pressure exerted on the pusher, which in this case is sliding, which generates the sparks and allows the passage of gas.
  • the object of the present invention is to overcome this drawback by making the lighting of a lighter more difficult, so that it can only result from a determined and voluntary operation, and in particular that a child cannot not cause it.
  • it aims to increase the operational safety of lighters and also relates to a lighter filler.
  • a spring is generally provided below the pusher, spring which returns the burner to its rest position corresponding to the gas passage stopping, the passage channel thereof being closed by a seal.
  • the spring must be strong enough to properly apply the seal against its seat through the tappet and the burner. However, for safety reasons, it appeared that the spring should be more powerful than necessary to ensure the seal, in order to avoid any accidental ignition by an unwanted bearing on the pusher, for example at inside a pocket.
  • a second object of the present invention is to overcome this drawback and to allow the use of a powerful pusher spring, without damaging the seal of the burner.
  • DE-U-88 02582 discloses a lighter, the pusher of which can be blocked for security purposes.
  • the blocking is obtained by mounting under the pusher, a disc having a central notch and the periphery of which comprises a maneuvering notch.
  • the pusher is provided with a central rod perpendicular to its lower surface which, in a determined position of the notch can pass through the central notch allowing the lowering of the pusher and the release of the gas. In the other positions, the rod abuts against the disc, which prohibits its lowering.
  • the safety lighter comprising a body of which a cavity forms the tank of liquefied gas, a burner movable under the action of a pusher whose front end is in mechanical connection with the burner head and whose l rear end has a bearing surface and a lateral surface which can be inserted into the body, the pusher being armed by a spring, and means for blocking the movement of the pusher controlled by a notch movable between a first safety position and a second operating position
  • said means consist of a movable safety catch in a notch in the body of the lighter, the notch being arranged, in the operating position, facing a light formed in the side wall of the pusher , the notch being integral with elastic return means in the safety position, means blocking the elastic return means in the operating position and et ant released by a cam by the movement of the pusher.
  • the notch moves, preferably in a plane perpendicular to the longitudinal median plane of the lighter.
  • the notch is secured to automatic return means in the safety position.
  • These means may consist, for example, of a spring which is banded when the user brings the notch into the operating position. But, in order to allow it to light the lighter with one hand, the front end of the spring can be hung on a hook, a cam secured to the pusher allowing disengage the spring from the hook, the spring being kept taut when the push button is pressed.
  • the liquefied gas lighter is characterized in that the front part of the pusher comprises a flexible zone and a rigid zone, a stroke limitation stop protruding downward from the zone rigid.
  • the contact between the front part of the tappet and the burner head is always effected by means of the flexible zone which in a way plays a damping role in the transmission of the force released by the tappet spring.
  • the pressure on the seal is made independent of the force of the pusher spring, the part or rigid zone of the front part of the pusher being stopped by the stop. It is therefore possible to mount a powerful spring on the lighter that meets safety conditions, without damaging the seal.
  • the spring can have, for example, a force of 15 to 20 newtons, the pressure on the seal being reduced to 2 or 3 newtons.
  • FIG. 1 We distinguish in Figure 1, the known components used in the manufacture of a lighter and, in particular, the upper end of the body 1 of the lighter, the burner 3 and the knob 4 for adjusting the height of the flame, partially included in the protective cover 2.
  • the pusher 7 is articulated on the body 1 and cooperates with the head of the burner 3. It is armed by a spring 8, working in compression, disposed between the body 1 and the internal surface of the pusher.
  • the rear side wall 9 of the pusher comprises a slot or notch 10.
  • this slot penetrates (in FIGS. 1, 2 and 2a which represent the lighter in the operating position), a tab or notch 11 secured to 'a crown 12 extending downward by a hub 13 rotating in a cavity 14 of the body 1 of the lighter which, moreover, serves as a housing at one end of the spring 8.
  • the notch 11 can rotate freely by an angle of about 60 ° in a lateral opening 25 of the side wall of the lighter body, while blocking the movement of the latter, except in the position corresponding to the light 10.
  • Figures 2, 2a, and 3, 3a show a part of the lighter in top view and in rear view, in this first embodiment.
  • the notch 11 can move me between two parts forming stops of the body 1, respectively referenced 21 and 22 limiting the travel of the notch 11.
  • the notch 11 has ridges 27 allowing it to be maneuvered to bring it into the required position.
  • the automatic return means in the safety position are constituted by a spiral spring 18 having a central crown 15.
  • the spring 18 is locked in rotation counterclockwise by a stud 16 or any other way.
  • the tab or notch 11 is secured to the spring 18 and guided as previously in the slot or cutout 25 cleared between the body 1 and the pusher 7. It is possible to provide on the pusher a slight ramp which facilitates the engagement of the notch 11 under the pusher when the notch returns to the locking position, completing the action of the pusher spring 8 and of the spring 18.
  • the front part 17 of the spring 18 has a notch 20, while in the vicinity of the edge 21 of the body is formed a hook 19.
  • the notch 20 snaps onto the hook 19.
  • the lighter can then operate, the tab 11 being in a suitable position, that is to say facing the light 10.
  • the body 1 of the lighter has, from left to right, a passage for mounting the burner 3 and mounting the adjustment stop 4 of the height of the flame, a yoke 5 receiving, in addition to the ignition wheel (not shown), an axis 6 for tilting the pusher 7.
  • the pusher 7 is armed by the spring 8 working in compression, the spring 8 being trapped on the one hand, in a cavity 7a formed in the pusher 7, and around a guide pin 26 formed in the body 1.
  • a pressure on the upper part of the pusher 7 causes the pusher to pivot about its axis 6 and the lifting of the front part 27 of the pusher.
  • This part 27 drives the head of the burner 3, and consequently, the whole burner towards the top of FIG. 6, which releases the seal 28 integral with the lower part 29 of the burner in its seat 30 and the passage of gas.
  • the front part 27 of the pusher 7 is made up of two zones, respectively 31 and 32 which will be described hereinafter as flexible zone 31 and rigid zone 32.
  • this composite structure results, in the example shown, from the cut in part 27 (or from the formation by molding) of a recess 33.
  • the rigidity of the zone 31 no longer depends only on the mechanical strength of the line 37 separating the two zones 31 and 32.
  • a stop 38 for limiting the travel of the front part 27 of the pusher 7.
  • this stop bears on the body 1 of the lighter. In the example shown, it rests on an extension 39 of the adjustment wheel 4.
  • the flexible part 31 has a heel 41 whose function will appear in the following.
  • the operation of the lighter provided with a pusher according to the invention is as follows: After action on the ignition wheel, pressure is exerted on the pusher 7, which causes the pivoting of the whole of the pusher and the raising of the front part 27.
  • the part 31 of the pusher comes into contact with the lower crown 40 of the burner head 3 and raises the latter, which has the effect of disengaging the burner seal from its seat 30, and allowing the passage of the igniting gas. It has been observed that, despite the elasticity of the flexible zone 31, the latter can lift the burner head without difficulty. But, in the opposite case, that is to say in the event of crushing of the part 31, the rigid zone would immediately take over to apply the necessary force.
  • the pressure on the pusher is released.
  • the pusher pivots in the sinistrorsum direction around the axis 6, and the part 27 descends to its rest position including the closing of the passage of gas by the burner gasket 28.
  • the burner is driven by the heel 41 of the part 31 which projects from below the lower surface of the rigid part 32. This drive continues until the burner seal is applied with sufficient pressure against his seat.
  • the stop 38 then comes into contact with the part 39 and the movement of the rigid part 32 is blocked. Only the pressure on the heel 41 acts on the burner, that is to say the pressure resulting from the elasticity of the line 37, which, as indicated above, is of limited value.
  • the lower surface of the flexible zone 31 is at a level lower than that of the lower surface of the rigid zone 32. If the flexibility of the zone 31 is sufficient, the stop can be omitted 38 stroke stop of the rigid zone 32. In all cases, it is the deformation of the flexible zone which transmits the desired pressure on the seal.
  • the flexible zone may be a circular central area projecting below the peripheral area. It is necessary to leave a little play between the parts in order to move them without friction. As a result, pressing the pusher can allow the gas to escape.

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

Abstract

Safety lighter operating only when a loading operation has been effected. A safety catch (11) moves freely in a notch (25) of the body (1) of the lighter, the plunger (7) of which can only be pressed when the catch (11) is in the central position. A spring automatically returns the catch to the safety position.

Description

La présente invention a pour objet un briquet de sécurité, à sûreté de fonctionnement, qui ne puisse être allumé qu'à la suite d'une opération d'armement.The present invention relates to a safety lighter, with operational safety, which can only be lit after an arming operation.

Les briquets à gaz actuellement fabriqués comprennent en général une reserve de gaz liquéfié, un détendeur, un brûleur et un ensemble d'allumage à pierre et molette. Le brûleur est mobile en translation et son déplacement permet ou non le passage du gaz détendu. Il est connu de commander les mouvements du brûleur à l'aide d'un poussoir basculant, sur lequel vient porter le pouce de l'utilisateur, après avoir fait tourner la molette d'allumage (qui est en contact avec la pierre dans le cas de l'allumage traditionnel). Le mouvement de basculement du poussoir soulève la tête du brûleur, ce qui permet la montée du gaz détendu en direction des étincelles. Dans le cas de l'allumage piézo-électrique, c'est la pression exercée sur le poussoir, qui dans ce cas est coulissant, qui génère les étincelles et permet le passage du gaz.The gas lighters currently manufactured generally include a reserve of liquefied gas, a regulator, a burner and an ignition assembly with stone and knurl. The burner is movable in translation and its movement allows or not the passage of the expanded gas. It is known to control the movements of the burner using a tilting pusher, on which the user's thumb comes, after having turned the ignition wheel (which is in contact with the stone in the case traditional ignition). The tilting movement of the pusher lifts the burner head, which allows the expanded gas to rise towards the sparks. In the case of piezoelectric ignition, it is the pressure exerted on the pusher, which in this case is sliding, which generates the sparks and allows the passage of gas.

D'une manière générale, les constructeurs se sont ingéniés à rendre l'allumage d'un briquet le plus simple possible. Mais ces briquets présentent des dangers en cas d'utilisation par les enfants.In general, manufacturers have tried to make lighting a lighter as simple as possible. However, these lighters present dangers when used by children.

La présente invention a pour objet de pallier cet inconvénient en rendant plus diffici le l'al lumage d'un briquet, afin que celui-ci ne puisse résulter que d'une opération déterminée et volontaire, et en particulier qu'un enfant ne puisse pas le provoquer. D'une manière générale, elle vise à accroître la sécurité de fonctionnement des briquets et concerne également un poussoir de briquet.The object of the present invention is to overcome this drawback by making the lighting of a lighter more difficult, so that it can only result from a determined and voluntary operation, and in particular that a child cannot not cause it. In general, it aims to increase the operational safety of lighters and also relates to a lighter filler.

Pour ramener automatiquement le brûleur dans sa position de fermeture, un ressort est généralement prévu au-dessous du poussoir, ressort qui rappelle le brûleur dans sa position de repos correspondant à l'arrêt de passage du gaz, le canal de passage de celui-ci étant obturé par un joint d'étanchéité.To automatically return the burner to its closed position, a spring is generally provided below the pusher, spring which returns the burner to its rest position corresponding to the gas passage stopping, the passage channel thereof being closed by a seal.

Le ressort doit être assez puissant pour appliquer convenablement le joint contre son siège par l'intermédiaire du poussoir et du brûleur. Mais, pour des raisons de sécurité, il est apparu que le ressort devait être plus puissant qu'il n'est nécessaire pour assurer l'étanchéité, afin d'éviter tout allumage accidentel par une portée indésirée sur le poussoir, par exemple à l'intérieur d'une poche.The spring must be strong enough to properly apply the seal against its seat through the tappet and the burner. However, for safety reasons, it appeared that the spring should be more powerful than necessary to ensure the seal, in order to avoid any accidental ignition by an unwanted bearing on the pusher, for example at inside a pocket.

On désire donc que l'allumage du briquet ne résulte que d'un geste volontaire de l'utilisateur et nécessite une force d'appui certaine sur le poussoir. Malheureusement, lorsque le ressort est très puissant, son action est reportée sur le joint de brûleur, et celui-ci est écrasé et endommagé. Il se produit des fuites, ce qui est dangereux et incompatible avec un fonctionnement normal.It is therefore desired that the ignition of the lighter results only from a voluntary gesture of the user and requires a certain pressing force on the pusher. Unfortunately, when the spring is very powerful, its action is transferred to the burner seal, and it is crushed and damaged. Leakage occurs, which is dangerous and incompatible with normal operation.

Un second objet de la présente invention est de pallier cet inconvénient et de permettre l'utilisation d'un ressort de poussoir puissant, sans endommager le joint du brûleur.A second object of the present invention is to overcome this drawback and to allow the use of a powerful pusher spring, without damaging the seal of the burner.

DE-U-88 02582 divulgue un briquet dont le poussoir peut être bloqué à des fins de sécurité. Le blocage est obtenu en montant sous le poussoir, un disque présentant une échancrure centrale et dont la périphérie comporte un cran de manoeuvre. Le poussoir est muni d'une tige centrale perpendiculaire à sa surface inférieure qui, dans une position déterminée du cran peut passer à travers l'échancrure centrale permettant l'abaissement du poussoir et la libération du gaz. Dans les autres positions, la tige vient buter contre le disque ce qui interdit son abaissement.DE-U-88 02582 discloses a lighter, the pusher of which can be blocked for security purposes. The blocking is obtained by mounting under the pusher, a disc having a central notch and the periphery of which comprises a maneuvering notch. The pusher is provided with a central rod perpendicular to its lower surface which, in a determined position of the notch can pass through the central notch allowing the lowering of the pusher and the release of the gas. In the other positions, the rod abuts against the disc, which prohibits its lowering.

Mais, après l'allumage, l'utilisateur doit ramener le cran de sûreté en position de blocage. Cette opération risque d'être très souvent négligée ou omise, ce qui rend le dispositif inefficace, une sécurité ne valant que par la permanence de son fonctionnement.However, after ignition, the user must return the safety catch to the locked position. This operation is likely to be very often neglected or omitted, which makes the device ineffective, a security being worth only by the permanence of its operation.

Selon l'invention, le briquet de sécurité comprenant un corps dont une cavité forme le réservoir de gaz liquéfié, un brûleur mobile sous l'action d'un poussoir dont l'extrêmité avant est en liaison mécanique avec la tête du brûleur et dont l'extrêmité arrière présente une surface d'appui et une surface latérale pouvant s'insérer dans le corps, le poussoir étant armé par un ressort, et des moyens de blocage du mouvement du poussoir commandés par un cran déplaçable entre une première position de sécurité et une seconde position de fonctionnement est caractérisé en ce que lesdits moyens consistent en un cran de sûreté mobile dans une encoche du corps du briquet, le cran étant disposé, en position de fonctionnement, en regard d'une lumière formée dans la paroi latérale du poussoir, le cran étant solidaire de moyens de rappel élastique en position de sécurité, des moyens bloquant les moyens de rappel élastique dans la position de fonctionnement et étant libérés par une came par le mouvement du poussoir.According to the invention, the safety lighter comprising a body of which a cavity forms the tank of liquefied gas, a burner movable under the action of a pusher whose front end is in mechanical connection with the burner head and whose l rear end has a bearing surface and a lateral surface which can be inserted into the body, the pusher being armed by a spring, and means for blocking the movement of the pusher controlled by a notch movable between a first safety position and a second operating position is characterized in that said means consist of a movable safety catch in a notch in the body of the lighter, the notch being arranged, in the operating position, facing a light formed in the side wall of the pusher , the notch being integral with elastic return means in the safety position, means blocking the elastic return means in the operating position and et ant released by a cam by the movement of the pusher.

Dans un souci de simplicité de repérage, le cran se déplace, de préférence dans un plan perpendiculaire au plan médian longitudinal du briquet.For the sake of simplicity of location, the notch moves, preferably in a plane perpendicular to the longitudinal median plane of the lighter.

Le cran est solidaire de moyens de rappel automatique en position de sécurité. Ces moyens peuvent consister, par exemple, en un ressort qui est bandé lorsque l'utilisateur amène le cran en position de fonctionnement. Mais, afin de lui permettre d'allumer le briquet avec une seule main, l'extrêmité avant du ressort peut être accrochée sur un crochet, une came solidaire du poussoir permettant de dégager le ressort du crochet, le ressort étant maintenu tendu lors de l'appui sur le poussoir.The notch is secured to automatic return means in the safety position. These means may consist, for example, of a spring which is banded when the user brings the notch into the operating position. But, in order to allow it to light the lighter with one hand, the front end of the spring can be hung on a hook, a cam secured to the pusher allowing disengage the spring from the hook, the spring being kept taut when the push button is pressed.

Selon une autre caractéristique de l'invention, le briquet à gaz liquéfié, est caractérisé en ce que la partie avant du poussoir comprend une zone souple et une zone rigide, une butée de limitation de course faisant saillie vers le bas à partir de la zone rigide.According to another characteristic of the invention, the liquefied gas lighter, is characterized in that the front part of the pusher comprises a flexible zone and a rigid zone, a stroke limitation stop protruding downward from the zone rigid.

Le contact entre la partie avant du poussoir et la tête de brûleur s'effectue toujours par l'intermédiaire de la zone souple qui joue en quelque sorte un rôle amortisseur dans la transmission de la force libérée par le ressort de poussoir. Ainsi, la pression sur le joint est rendue indépendante de la force du ressort de poussoir, la partie ou zone rigide de la partie avant du poussoir étant stoppée par la butée. Il est donc possible de monter sur le briquet un ressort puissant répondant aux conditions de sécurité, sans endommager le joint. Le ressort peut avoir, par exemple une force de 15 à 20 newtons, la pression sur le joint étant réduite à 2 ou 3 newtons.The contact between the front part of the tappet and the burner head is always effected by means of the flexible zone which in a way plays a damping role in the transmission of the force released by the tappet spring. Thus, the pressure on the seal is made independent of the force of the pusher spring, the part or rigid zone of the front part of the pusher being stopped by the stop. It is therefore possible to mount a powerful spring on the lighter that meets safety conditions, without damaging the seal. The spring can have, for example, a force of 15 to 20 newtons, the pressure on the seal being reduced to 2 or 3 newtons.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre de modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent :

  • La figure 1, un vue en coupe verticale de la partie supérieure d'un briquet de sûreté conforme à l'invention ;
  • Les figures 2 et 2a, des vues par-dessus et par l'arrière d'un briquet en position d'utilisation ;
  • Les figures 3 et 3a, les mêmes vues du même briquet en position de sécurité ;
  • La figure 4, une vue par-dessus de la partie arrière du briquet, le poussoir étant retiré, montrant le verrou en position d'utilisation ;
  • La figure 5, dans les mêmes conditions, le verrou en position de sécurité ;
  • La figure 6, une coupe verticale de la partie supérieure d'un briquet à gaz selon l'invention, en position de repos ;
  • La figure 7, une demi-vue par-dessus de la partie antérieure du même briquet.
Other characteristics and advantages of the invention will emerge during the description which follows of particular embodiments, given solely by way of nonlimiting examples, with reference to the drawings which represent:
  • Figure 1, a vertical sectional view of the upper part of a safety lighter according to the invention;
  • Figures 2 and 2a, views from above and from the rear of a lighter in the use position;
  • Figures 3 and 3a, the same views of the same lighter in the safety position;
  • Figure 4, a view over the rear part of the lighter, the pusher being removed, showing the latch in the use position;
  • Figure 5, under the same conditions, the lock in the safety position;
  • Figure 6, a vertical section of the upper part of a gas lighter according to the invention, in the rest position;
  • Figure 7, a half view over the front of the same lighter.

On distingue sur la figure 1, les composants connus entrant dans la fabrication d'un briquet et, notamment, l'extrêmité supérieure du corps 1 du briquet, le brûleur 3 et la molette 4 de réglage de hauteur de la flamme, partiellement incluse dans le capot 2 de protection. Le poussoir 7 est articulé sur le corps 1 et coopère avec la tête du brûleur 3. Il est armé par un ressort 8, travaillant en compression, disposé entre le corps 1 et la surface interne du poussoir.We distinguish in Figure 1, the known components used in the manufacture of a lighter and, in particular, the upper end of the body 1 of the lighter, the burner 3 and the knob 4 for adjusting the height of the flame, partially included in the protective cover 2. The pusher 7 is articulated on the body 1 and cooperates with the head of the burner 3. It is armed by a spring 8, working in compression, disposed between the body 1 and the internal surface of the pusher.

Conformément à l'invention, la paroi latérale arrière 9 du poussoir comporte une lumière ou encoche 10. Dans cette lumière pénètre (sur les figures 1, 2 et 2a qui représentent le briquet en position de fonctionnement), une patte ou cran 11 solidaire d'une couronne 12 se prolongeant vers le bas par un moyeu 13 tournant dans une cavité 14 du corps 1 du briquet qui, par ailleurs, sert de logement à une extrêmité du ressort 8. Ainsi, comme celà apparaît mieux sur les figures 2a et 3a, le cran 11 peut tourner librement d'un angle d'environ 60° dans une ouverture latérale 25 de la paroi latérale du corps de briquet, tout en bloquant le mouvement de celui-ci, sauf dans la position correspondant à la lumière 10.According to the invention, the rear side wall 9 of the pusher comprises a slot or notch 10. In this slot penetrates (in FIGS. 1, 2 and 2a which represent the lighter in the operating position), a tab or notch 11 secured to 'a crown 12 extending downward by a hub 13 rotating in a cavity 14 of the body 1 of the lighter which, moreover, serves as a housing at one end of the spring 8. Thus, as shown better in Figures 2a and 3a , the notch 11 can rotate freely by an angle of about 60 ° in a lateral opening 25 of the side wall of the lighter body, while blocking the movement of the latter, except in the position corresponding to the light 10.

Seule la position du cran représentée sur les figures 1, 2 et 2a permet le mouvement du poussoir 7 et, par suite, la libération du gaz.Only the position of the notch shown in Figures 1, 2 and 2a allows movement of the pusher 7 and, consequently, the release of the gas.

Les figures 2, 2a, et 3, 3a représentent une partie du briquet en vue par-dessus et en vue par l'arrière, dans ce premier mode de réalisation. On voit sur la figure 2 que le cran 11 peut me déplacer entre deux parties formant butées du corps 1, référencées respectivement 21 et 22 limitant la course du cran 11. Le cran 11 présente des striures 27 permettant de le manoeuvrer pour l'amener dans la position requise.Figures 2, 2a, and 3, 3a show a part of the lighter in top view and in rear view, in this first embodiment. We see in Figure 2 that the notch 11 can move me between two parts forming stops of the body 1, respectively referenced 21 and 22 limiting the travel of the notch 11. The notch 11 has ridges 27 allowing it to be maneuvered to bring it into the required position.

Mais, comme indiqué ci-dessus, il est souhaitable que le briquet revienne de lui-même en position de sécurité après un allumage. Pour atteindre ce but, il est possible d'utiliser les moyens qui sont représentés sur les figures 4 et 5, respectivement en position de fonctionnement et en position de sécurité, le passage du gaz étant alors interdit par blocage du poussoir 7.However, as indicated above, it is desirable for the lighter to return by itself to the safety position after ignition. To achieve this goal, it is possible to use the means which are shown in FIGS. 4 and 5, respectively in the operating position and in the safety position, the passage of gas then being prohibited by blocking the pusher 7.

Dans l'exemple représenté, les moyens de rappel automatique en position de sécurité, sont constitués par un ressort en spirale 18 présentant une couronne centrale 15. Le ressort 18 est bloqué en rotation dans le sens anti-horaire par un téton 16 ou tout autre moyen. Dans ce mode de réalisation, la patte ou cran 11 est solidarisée avec le ressort 18 et guidée comme précédemment dans la fente ou découpe 25 dégagée entre le corps 1 et le poussoir 7. Il est possible de prévoir sur le poussoir une légère rampe qui facilite l'engagement du cran 11 sous le poussoir lorsque le cran retourne en position de verrouillage, complétant l'action du ressort de poussoir 8 et du ressort 18.In the example shown, the automatic return means in the safety position, are constituted by a spiral spring 18 having a central crown 15. The spring 18 is locked in rotation counterclockwise by a stud 16 or any other way. In this embodiment, the tab or notch 11 is secured to the spring 18 and guided as previously in the slot or cutout 25 cleared between the body 1 and the pusher 7. It is possible to provide on the pusher a slight ramp which facilitates the engagement of the notch 11 under the pusher when the notch returns to the locking position, completing the action of the pusher spring 8 and of the spring 18.

Comme celà apparaît sur les figures 4 et 5, la partie avant 17 du ressort 18 présente une encoche 20, alors qu'au voisinage du bord 21 du corps est formé un crochet 19. Lorsque la patte 11 est amenée dans la position de fonctionnement (figure 4), l'encoche 20 vient s'encliqueter sur le crochet 19. Le briquet peut alors fonctionner, la patte 11 étant dans une position convenable, c'est-à-dire en regard de la lumière 10.As shown in Figures 4 and 5, the front part 17 of the spring 18 has a notch 20, while in the vicinity of the edge 21 of the body is formed a hook 19. When the tab 11 is brought into the operating position ( Figure 4), the notch 20 snaps onto the hook 19. The lighter can then operate, the tab 11 being in a suitable position, that is to say facing the light 10.

Lorsque l'utilisateur appuie sur le poussoir 7, la surface 24 du poussoir (figure 1) vient porter sur une dent ou came 23 solidaire de la patte 11, qui entraîne celle-ci vers l'avant, c'est-à-dire vers le corps du briquet. Ce mouvement entraîne le dégagement de l'encoche 20 hors du crochet 19. Mais, la came 23 de la patte 11 reste bloquée par le côté correspondant de la lumière 10. Ce n'est donc qu'après que le poussoir 7 ait retrouvé sa position de repos sous l'action du ressort 8, que la patte 11 peut échapper, à l'intérieur de la fente 25, en tournant sous l'action du ressort 18. La position prise par les différents composants est alors celle qui est représentée sur la figure 5. La patte 11 vient, sous l'action du ressort 18, en butée contre le bord 22 de la fente 25 et avant utilisation ultérieure le cran ou patte 11 doit être ramené en regard de la lumière 10.When the user presses the pusher 7, the surface 24 of the pusher (FIG. 1) comes to bear on a tooth or cam 23 integral with the tab 11, which drives the latter forward, that is to say towards the body of the lighter. This movement results in the release of the notch 20 from the hook 19. However, the cam 23 of the tab 11 remains blocked by the corresponding side of the light 10. It is therefore only after the pusher 7 has found its rest position under the action of the spring 8, which the tab 11 can escape, inside the slot 25, by turning under the action of the spring 18. The position taken by the various components is then that which is shown in FIG. 5. The tab 11 comes, under the action of the spring 18, into abutment against the edge 22 of the slot 25 and before subsequent use the notch or tab 11 must be brought back facing the light 10.

Sur la figure 6 sur laquelle le dispositif de sécurité n'est pas représenté dans un souci de simplicité, le corps 1 du briquet présente, de gauche à droite, un passage pour le montage du brûleur 3 et le montage de la butée 4 de réglage de la hauteur de la flamme, une chape 5 recevant, outre la molette d'allumage (non représentée), un axe 6 de basculement du poussoir 7.In Figure 6 in which the safety device is not shown for the sake of simplicity, the body 1 of the lighter has, from left to right, a passage for mounting the burner 3 and mounting the adjustment stop 4 of the height of the flame, a yoke 5 receiving, in addition to the ignition wheel (not shown), an axis 6 for tilting the pusher 7.

Le poussoir 7 est armé par le ressort 8 travaillant en compression, le ressort 8 étant emprisonné d'une part, dans une cavité 7a formée dans le poussoir 7, et autour d'un téton de guidage 26 formé dans le corps 1. Comme dans la technique antérieure, une pression sur la partie supérieure du poussoir 7 provoque le pivotement du poussoir autour de son axe 6 et le soulèvement de la partie avant 27 du poussoir.The pusher 7 is armed by the spring 8 working in compression, the spring 8 being trapped on the one hand, in a cavity 7a formed in the pusher 7, and around a guide pin 26 formed in the body 1. As in the prior art, a pressure on the upper part of the pusher 7 causes the pusher to pivot about its axis 6 and the lifting of the front part 27 of the pusher.

Cette partie 27 entraîne la tête du brûleur 3, et par suite, tout le brûleur vers le haut de la figure 6, ce qui dégage le joint d'étanchéité 28 solidaire de la partie inférieure 29 du brûleur de son siège 30 et le passage du gaz.This part 27 drives the head of the burner 3, and consequently, the whole burner towards the top of FIG. 6, which releases the seal 28 integral with the lower part 29 of the burner in its seat 30 and the passage of gas.

Selon une caractéristique de l'invention, la partie avant 27 du poussoir 7 est constituée de deux zones, respectivement 31 et 32 qui seront qualifiées par la suite de zone souple 31 et de zone rigide 32. Comme celà apparaît sur la figure 7, cette structure composite résulte, dans l'exemple représenté, de la découpe dans la partie 27 (ou de la formation par moulage) d'un évidement 33. Ainsi, la rigidité de la zone 31 ne dépend plus que de la résistance mécanique de la ligne 37 de séparation des deux zones 31 et 32.According to a characteristic of the invention, the front part 27 of the pusher 7 is made up of two zones, respectively 31 and 32 which will be described hereinafter as flexible zone 31 and rigid zone 32. As shown in FIG. 7, this composite structure results, in the example shown, from the cut in part 27 (or from the formation by molding) of a recess 33. Thus, the rigidity of the zone 31 no longer depends only on the mechanical strength of the line 37 separating the two zones 31 and 32.

Au-dessous de la zone 32, fait saillie, vers le bas, une butée 38 de limitation de la course de la partie avant 27 du poussoir 7. D'une manière générale, cette butée prend appui sur le corps 1 du briquet. Dans l'exemple représenté, elle repose sur un prolongement 39 de la molette de réglage 4.Below the zone 32, projects downward a stop 38 for limiting the travel of the front part 27 of the pusher 7. Generally, this stop bears on the body 1 of the lighter. In the example shown, it rests on an extension 39 of the adjustment wheel 4.

Comme celà apparaît sur la figure 6, la partie souple 31 présente un talon 41 dont la fonction apparaîtra dans ce qui suit.As shown in Figure 6, the flexible part 31 has a heel 41 whose function will appear in the following.

Le fonctionnement du briquet muni d'un poussoir selon l'invention est le suivant :
   Après action sur la molette d'allumage, une pression est exercée sur le poussoir 7, qui provoque le pivotement de l'ensemble du poussoir et l'élévation de la partie avant 27. La partie 31 du poussoir vient en contact avec la couronne inférieure 40 de la tête de brûleur 3 et soulève celle-ci, ce qui a pour effet de dégager le joint de brûleur de son siège 30, et de permettre le passage du gaz qui s'enflamme. On a observé que, malgré l'élasticité de la zone souple 31, celle-ci pouvait soulever, sans difficulté, la tête de brûleur. Mais, dans le cas contraire, c'est-à-dire en cas d'écrasement de la partie 31, la zone rigide prendrait immédiatement le relais pour appliquer la force nécessaire.The operation of the lighter provided with a pusher according to the invention is as follows:
After action on the ignition wheel, pressure is exerted on the pusher 7, which causes the pivoting of the whole of the pusher and the raising of the front part 27. The part 31 of the pusher comes into contact with the lower crown 40 of the burner head 3 and raises the latter, which has the effect of disengaging the burner seal from its seat 30, and allowing the passage of the igniting gas. It has been observed that, despite the elasticity of the flexible zone 31, the latter can lift the burner head without difficulty. But, in the opposite case, that is to say in the event of crushing of the part 31, the rigid zone would immediately take over to apply the necessary force.

Après allumage d'une cigarette ou analogue, la pression sur le poussoir est relâchée. Sous l'action du ressort 8 préalablement comprimé, le poussoir pivote dans le sens sinistrorsum autour de l'axe 6, et la partie 27 redescend vers sa position de repos incluant la fermeture du passage du gaz par le joint de brûleur 28. Au cours de cette descente, le brûleur est entraîné par le talon 41 de la partie 31 qui est en saillie par rapport au-dessous de la surface inférieure de la partie rigide 32. Cet entraînement se poursuit jusqu'à ce que le joint de brûleur soit appliqué avec la pression suffisante contre son siège. La butée 38 vient alors au contact de la pièce 39 et le mouvement de la partie rigide 32 est bloqué. Seule agit sur le brûleur la pression du talon 41, c'est-à-dire la pression résultant de l'élasticité de la ligne 37, qui, comme indiqué ci-dessus, est d'une valeur limitée.After lighting a cigarette or the like, the pressure on the pusher is released. Under the action of the previously compressed spring 8, the pusher pivots in the sinistrorsum direction around the axis 6, and the part 27 descends to its rest position including the closing of the passage of gas by the burner gasket 28. During from this descent, the burner is driven by the heel 41 of the part 31 which projects from below the lower surface of the rigid part 32. This drive continues until the burner seal is applied with sufficient pressure against his seat. The stop 38 then comes into contact with the part 39 and the movement of the rigid part 32 is blocked. Only the pressure on the heel 41 acts on the burner, that is to say the pressure resulting from the elasticity of the line 37, which, as indicated above, is of limited value.

D'une manière générale, il importe que la surface inférieure de la zone souple 31 se trouve à un niveau inférieur à celui de la surface inférieure de la zone rigide 32. Si la souplesse de la zone 31 est suffisante, on peut omettre la butée 38 d'arrêt de course de la zone rigide 32. Dans tous les cas, c'est la déformation de la zone souple qui transmet la pression voulue sur le joint. Bien entendu, la zone souple peut être une zone centrale circulaire faisant saillie au-dessous de la zone périphérique. Il est nécessaire de laisser un peu de jeu entre les pièces en vue de leur déplacement sans frottement. Il en résulte qu'un appui sur le poussoir peut permettre au gaz de s'échapper.In general, it is important that the lower surface of the flexible zone 31 is at a level lower than that of the lower surface of the rigid zone 32. If the flexibility of the zone 31 is sufficient, the stop can be omitted 38 stroke stop of the rigid zone 32. In all cases, it is the deformation of the flexible zone which transmits the desired pressure on the seal. Of course, the flexible zone may be a circular central area projecting below the peripheral area. It is necessary to leave a little play between the parts in order to move them without friction. As a result, pressing the pusher can allow the gas to escape.

La description qui précède a été donnée dans le cas d'un briquet à allumage traditionnel par pierre. Mais, des moyens analogues peuvent être mis en oeuvre dans le cas d'un allumage piézo-électrique dans lequel le poussoir n'est plus basculant, mais coulissant.The foregoing description was given in the case of a traditional lighter with stone ignition. However, similar means can be used in the case of a piezoelectric ignition in which the pusher is no longer tilting, but sliding.

Claims (10)

  1. A safety lighter comprising a body (1) in which a cavity forms a store for liquefied gas, a burner (3) movable under drive from a pushbutton (7) wise front end is mechanically linked with the burner head (3) and whose rear end has a thrust surface and a side surface capable of being inserted in the body (1), the pushbutton (7) being loaded by a spring (8), and locking means controllable by a displaceable catch for preventing the pushbutton moving between a safe first position and a working second position, the lighter being characterized in that said means are constituted by a safety catch (11) that is movable in a notch (25) in the body (1) of the lighter, the catch (11) being disposed in the working position facing an opening (10) formed in the side wall (9) of the pushbutton (7), the catch (11) being secured to resilient return means (18) for urging it towards the safe position, means (19, 20) locking the resilient return means (18) in the working position and being released by a cam (23) by the movement of the pushbutton (7).
  2. A lighter according to claim 1, characterized in that the catch (11) is guided inside the notch (25) between two vertical edges ( 21, 22 ) forming abutments, corresponding respectively to the working position and to the safe position.
  3. A lighter according to claim 1 or 2, characterized in that the catch ( 11 ) is secured to a ring ( 12 ) surrounding the spring (8) of the pushbutton (7).
  4. A lighter according to any one of claims 1 to 3, characterized in that the catch (11) is secured to a resilient piece (18) disposed around the spring (8) of the pushbutton (7), the front end (17) of the piece (18) having a notch (20) that engages a hook (19) provided in the body (1) of the lighter, when the catch (11) is displaced into its working position.
  5. A lighter according to claim 4, characterized in that the pushbutton (7) has a sloping surface (24) co-operating with a cam (23) provided on the catch (11) in order to disengage the notch (20) from the hook (19) and to release the resilient piece (18).
  6. A lighter according to any preceding claim, characterized in that since the body is symmetrical about its midplane, the edges of the notch (10) are parallel to said plane and on either side of said plane.
  7. A lighter according to any preceding claim, characterized in that the front portion of the pushbutton (7) includes a flexible zone (31) and a rigid zone (32), the flexible zone (31) being provided with a rim (41) whose bottom surface is at a level below the level of the bottom surface of the zone (32).
  8. A lighter according to claim 7, characterized in that a stroke/limiting abutment (38) projects from the bottom surface of the rigid zone (32).
  9. A lighter according to claim 7 or 8, characterized in that the two zones (31, 32) are made of the same material, the flexible zone (31) being separated from the rigid zone (32) by a hollow (33), the connection between the zones (31, 32) being provided by a line (37).
  10. A lighter according to any one of claims 7 to 9, the lighter being provided with a knob (4) for adjusting the gas flow rate, the lighter being characterized in that the abutment (38) bears in the rest position against an extension (39) of the knob (4).
EP89908222A 1988-07-01 1989-06-29 Safety lighter Expired - Lifetime EP0374246B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908222T ATE86029T1 (en) 1988-07-01 1989-06-29 SAFETY LIGHTER.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8808912A FR2633702B1 (en) 1988-07-01 1988-07-01 SAFETY LIGHTER
FR8808912 1988-07-07
FR8809387 1988-07-11
FR8809387A FR2634004A1 (en) 1988-07-11 1988-07-11 Push button for a lighter

Publications (2)

Publication Number Publication Date
EP0374246A1 EP0374246A1 (en) 1990-06-27
EP0374246B1 true EP0374246B1 (en) 1993-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908222A Expired - Lifetime EP0374246B1 (en) 1988-07-01 1989-06-29 Safety lighter

Country Status (5)

Country Link
US (2) US5224854A (en)
EP (1) EP0374246B1 (en)
JP (1) JPH03501647A (en)
FI (1) FI900918A0 (en)
WO (1) WO1990000239A1 (en)

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US4773849A (en) * 1987-05-14 1988-09-27 Schaechter Friedrich Valve actuator for pocket lighter
US4889482A (en) * 1987-05-14 1989-12-26 Schaechter Friedrich Valve actuator for pocket lighter
JPH0335975Y2 (en) * 1987-05-20 1991-07-30
US4758152A (en) * 1987-06-01 1988-07-19 Gary Michael Price Safety mechanism for a cigar lighter
JPH0335971Y2 (en) * 1987-06-26 1991-07-30
US4850854A (en) * 1987-10-02 1989-07-25 Buck George S Child resistant cigarette lighter
EP0312627B1 (en) * 1987-10-21 1990-11-28 Tokai Corporation Gaslighter equipped with a safety lock
JPH053894Y2 (en) * 1987-12-28 1993-01-29
US4830603A (en) * 1988-03-04 1989-05-16 Salvatore Cirami Child-resistant disposable lighter
DE3811161A1 (en) * 1988-03-31 1989-10-19 Erka Gmbh MULTI-PURPOSE LIGHTER
US4832596A (en) * 1988-04-15 1989-05-23 Morris Sr Glenn H Child resistant cigarette lighter
US4878836A (en) * 1988-05-11 1989-11-07 Tokai Corporation Gaslighter structure
JPH053897Y2 (en) * 1988-06-07 1993-01-29
US4822276A (en) * 1988-06-13 1989-04-18 Bisbee Jerry L Child-proof cigarette lighter
US4799877A (en) * 1988-06-13 1989-01-24 Bisbee Jerry L Child-proof adaptor for disposable butane cigarette lighter
US4921420A (en) * 1988-07-05 1990-05-01 Johnston James A Child resistant disposable lighter
US5002482B1 (en) * 1988-09-02 2000-02-29 Bic Corp Selectively actuatable lighter
US4869663A (en) * 1988-09-22 1989-09-26 Fremund Zdenek A Child proof cigarette lighter

Also Published As

Publication number Publication date
US5378143A (en) 1995-01-03
WO1990000239A1 (en) 1990-01-11
FI900918A0 (en) 1990-02-23
JPH03501647A (en) 1991-04-11
US5224854A (en) 1993-07-06
EP0374246A1 (en) 1990-06-27

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