EP0899028B1 - Lever actuated compressed-air mouth piece - Google Patents

Lever actuated compressed-air mouth piece Download PDF

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Publication number
EP0899028B1
EP0899028B1 EP98420148A EP98420148A EP0899028B1 EP 0899028 B1 EP0899028 B1 EP 0899028B1 EP 98420148 A EP98420148 A EP 98420148A EP 98420148 A EP98420148 A EP 98420148A EP 0899028 B1 EP0899028 B1 EP 0899028B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
lever
blower according
valve
female element
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
EP98420148A
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German (de)
French (fr)
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EP0899028A1 (en
Inventor
Jean Jacques Lacroix
Christophe Laporte
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Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
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Publication date
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Publication of EP0899028A1 publication Critical patent/EP0899028A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve

Definitions

  • the invention relates to a compressed air blow gun. controlled by an articulated lever.
  • blow guns whose sole function is to supply pressurized air.
  • blow guns which can be connected to portable tools. They then fulfill the function of removable pipe junction commonly called "quick coupling".
  • quick coupling When a tool is connected to such a blow gun, the operator is bothered by the presence of the control lever. This lever decreases the maneuverability of tools and can lead to inaccuracy operator gestures.
  • blow guns suitable for connection to tools are used mostly as quick couplers and at the end of post or at the end of the day, as blow guns. Consequently, the aforementioned inconvenience of operator discomfort is present most of the time, which is painful.
  • the invention relates to an air blow gun tablet controlled by a lever, characterized in that it comprises a substantially tubular body capable of cooperating with means of immobilization inside a female element quick coupling to hold said body in position in a central bore of said female element and a nozzle overall tubular able to move, by sliding inside of said body, a valve of said female element, sliding of said nozzle in said body being controlled by said the sink.
  • the blow gun of the invention constitutes a set removable intended to be mounted on the female element of a classic quick coupling and to be removed when a tool must be used. When the blow gun is disassembled, it does not interfere with the use of the tool, which is pleasant for the user. When the blow gun must be mounted, it is fitted into the female part of the fitting fast in the manner of a male end, that is to say so particularly easy.
  • the sliding of the nozzle inside of the tubular body of the blow gun of the invention allows to control the valve of the female element of the quick coupling and in particular to admit pressurized air inside nozzle for the aforementioned cleaning function. When the blowing operation is finished, the blower can be easily disconnected, eliminating any discomfort for the user.
  • the blow gun therefore transforms temporarily, quickly and cheaply, a fitting quick cleaning tool.
  • the lever is articulated around an axis supported by legs of the body, this axis being clipped into the legs.
  • This aspect of the invention makes it possible to envisage a removable nature of the blow gun while the lever articulation system is particularly simple.
  • a cam allows transform the rotational movement of the lever into a movement of translation of the nozzle.
  • the cam is further from the central axis of the nozzle than the ramp.
  • This aspect of the invention provides that, at the start of actuation of the lever, the reduction of the force is more important when the displacement of the nozzle is relatively slow, which overcomes the effort exerted on the valve of the female element by pressurized air.
  • the ramp can multiply the translation by approaching the axis center of the nozzle to obtain rapid opening of the valve. Thanks to this aspect of the invention, the opening movement is optimized in terms of efforts and opening speed.
  • the cam is arranged on a lug connecting part of the lever intended to be manipulated to the axis of articulation of the lever on the body. This contributes to the multiplier effect.
  • the nozzle door at its end intended to penetrate into the element female, a valve thrust ring.
  • This ring allows to adapt the outside diameter of the nozzle to that of the valve.
  • the nozzle can have an outside diameter of the order of 3 mm while the valve may have a larger diameter, from from 3 to 30 mm, depending on the type of female element of quick coupling and, in particular, its nominal pressure of job.
  • the nozzle is provided with a notch defining two receiving housings of an elastic tab of the body, this tab being arranged so that its end selectively enters one housing.
  • the movement of pivoting of the lever is limited by the support of this lever on the body or on the nozzle.
  • the body carries a stop, capable of cooperating with a corresponding part of the lever when the nozzle is moved towards the inside of the female element, and that the nozzle carries a stop, able to cooperate with a corresponding stop of the lever when the nozzle is moved out of the element female.
  • the body of the female element A with a quick coupling shown in Figure 1 consists of the assembly of two tubular parts, namely a main part 1 and a part rear 2, this assembly being operated by elastic snap-fastening.
  • An assembly formed by a tubular valve 3, a seat or seal 4, a valve holder 5 and a return spring 6 is held in place inside a central bore the of the part 1 thanks to part 2.
  • the valve holder 5 ensures the retention an O-ring 7 intended to fulfill a sealing function.
  • the valve 3 and the valve holder 5 can be produced in a single piece.
  • the body formed of elements 1 and 2 is surrounded by an operating sleeve 8 and an anterior sleeve 9, the sleeve 9 being snapped elastically inside sleeve 8.
  • a ring 10, called a locking ring, provided with longitudinal claws 10 has turned towards the front, that is to say to the left of FIG. 1, slides on the part 1.
  • the free end of each of the claws 10 a has a profiled head 10 b intended to be trapped behind an external radial shoulder of a male end piece intended to cooperate with the female element A.
  • the claws 10 a therefore constitute means for immobilizing a male part inside the female element A.
  • the blower B is intended to be mounted in the element A. It comprises a body 51 in the form of a tubular sleeve provided with a radial peripheral groove 52 intended to receive the heads 10 b of the claws 10 a , to as shown in Figure 1. In this position, the body 51 is firmly immobilized relative to the female element A.
  • a nozzle 54 in the form of a tube which can slide relative to the body 51.
  • a lever 55 is articulated on the body 51 thanks to a pin 56 clipped into two legs of which only one is visible in the figures with the reference 57.
  • a ring 63 having a radial face of diameter substantially equal to the exposed face of the valve holder 5.
  • the end 62 of the nozzle 54 drives the ring 63 which pushes the valve holder 5 to against the force of the spring 6.
  • This has the effect of remove the valve 3 from its seal 4 and allow circulation compressed air from the upstream pipe to the nozzle 54, which is represented by the flow arrow E.
  • the air gun remains in this air flow position compressed as long as the handle 58 remains pressed on the sleeve 8.
  • a notch 64 is provided on the outside of the nozzle 54 and defines two housings 65 and 66, for receiving the head 67 of an elastic tab 68 formed in the body 51.
  • the head 67 is in place in the housing 65, so that the elasticity of the tab 68 is opposed to a movement of the nozzle 54 to the left of FIG. 2.
  • the elasticity of the tab 68 makes it possible to create a reaction force to the valve closing force due to the spring 6. This construction improves user comfort blow gun if the user does not feel the entire thrust force due to the spring 6.
  • the head 67 of lug 68 is in place in housing 66, so that it is opposed to an untimely operation of the lever 55.
  • the insertion of the nozzle 54 towards the valve 3 can only result from user effort enough to move head 67 from tab 68 above notch 64. This avoids untimely opening of the blower.
  • a stop 69 is provided on the body 51 to limit the movement of the leg 60, and therefore of the lever assembly 55, around the axis 56. In the position of FIGS. 2 and 3, the tab 60 is in support against the stop 69.
  • the nozzle 54 carries a radial flange 70 intended to cooperate with a nose 71 of the lever 55 to limit the tilting movement of the lever 55 in the opposite direction at force F.
  • the flange 70 serves as a stop for the nose 71 of the lever 55.
  • the stops 69 and 70 make it possible to limit the amplitude of the pivoting of the lever 55 and, thereby, the displacement of the nozzle 54, this movement being moreover controlled elastically thanks to tab 68.
  • Blow gun B can be easily assembled and disassembled on element A like the male end of a fitting fast while it works particularly satisfactory.
  • blower B once disassembled of the female element A, constitutes a unitary assembly which can be stored without risk of disassembly.
  • the invention has been presented with the articulated lever 55 around an axis.
  • other means of controlling the sliding of the nozzle 54 in the body 51 can be used such as, in particular, an outer ring engaged with the nozzle.
  • This ring could include a straight ramp or helical to increase the force applied to the nozzle.

Landscapes

  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Cleaning In General (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The blower (B), controlled by a lever (55), has a tubular body (51) designed to engage with a lock (10) inside a female quick-fit coupling member (A) to hold the body inside a central bore (1a). The blower body is equipped with a sliding nozzle (54) controlled by the lever (55), which is articulated about an axis (56) supported by lugs (57) on the body. The lever also has a cam which interacts with a sloping surface to shift the nozzle.

Description

L'invention a trait à une soufflette à air comprimé commandée par un levier articulé.The invention relates to a compressed air blow gun. controlled by an articulated lever.

Dans les ateliers ou les garages, il est connu d'utiliser l'air comprimé comme source d'énergie pour des outillages pneumatiques portatifs tel que des perceuses ou des visseuses. Il est également connu d'utiliser l'air comprimé pour nettoyer les postes de travail ou les machines en expulsant les copeaux ou la poussière grâce à un jet d'air. Pour ce nettoyage, on utilise une soufflette, c'est-à-dire une buse commandée qui peut être ouverte ou fermée au choix de l'utilisateur grâce à un levier.In workshops or garages, it is known to use compressed air as an energy source for tools portable tires such as drills or screwdrivers. It is also known to use compressed air to clean workstations or machines by expelling chips or dust thanks to an air jet. For this cleaning, we uses a blow gun, i.e. a controlled nozzle which can be opened or closed at the user's choice thanks to a lever.

Il existe des soufflettes dont la seule fonction est de délivrer de l'air sous pression.There are blow guns whose sole function is to supply pressurized air.

Il existe également des soufflettes de type particulier qui peuvent être connectées sur des outils portatifs. Elles remplissent alors la fonction de jonction amovible de canalisation communément appelée "raccord rapide". Lorsqu'un outil est raccordé à une telle soufflette, l'opérateur est gêné par la présence du levier de commande. Ce levier diminue la manoeuvrabilité des outils et peut conduire à une imprécision des gestes de l'opérateur. En pratique, il s'avère que les soufflettes aptes à être connectées à des outils sont utilisées la plupart du temps en tant que raccords rapides et, en fin de poste ou en fin de journée, en tant que soufflettes. En conséquence, l'inconvénient précité de gêne de l'opérateur est présent la plupart du temps, ce qui s'avère pénible.There are also special type blow guns which can be connected to portable tools. They then fulfill the function of removable pipe junction commonly called "quick coupling". When a tool is connected to such a blow gun, the operator is bothered by the presence of the control lever. This lever decreases the maneuverability of tools and can lead to inaccuracy operator gestures. In practice, it turns out that blow guns suitable for connection to tools are used mostly as quick couplers and at the end of post or at the end of the day, as blow guns. Consequently, the aforementioned inconvenience of operator discomfort is present most of the time, which is painful.

C'est à ces inconvénients qu'entend remédier l'invention en proposant une soufflette qui ne gêne pas un opérateur lorsque celui-ci veut utiliser uniquement une fonction "raccord rapide".It is these drawbacks that the invention intends to remedy. by proposing a blow gun which does not disturb an operator when this wants to use only a "fitting" function fast".

Dans cet esprit, l'invention concerne une soufflette à air comprimé commandée par un levier, caractérisée en ce qu'elle comprend un corps sensiblement tubulaire apte à coopérer avec des moyens d'immobilisation à l'intérieur d'un élément femelle de raccord rapide pour maintenir ledit corps en position dans un alésage central dudit élément femelle et une buse globalement tubulaire apte à déplacer, par coulissement à l'intérieur dudit corps, un clapet dudit élément femelle, le coulissement de ladite buse dans ledit corps étant commandé par ledit levier.In this spirit, the invention relates to an air blow gun tablet controlled by a lever, characterized in that it comprises a substantially tubular body capable of cooperating with means of immobilization inside a female element quick coupling to hold said body in position in a central bore of said female element and a nozzle overall tubular able to move, by sliding inside of said body, a valve of said female element, sliding of said nozzle in said body being controlled by said the sink.

La soufflette de l'invention constitue un ensemble amovible destiné à être monté sur l'élément femelle d'un raccord rapide classique et à en être démonté lorsqu'un outil doit être utilisé. Lorsque la soufflette est démontée, elle n'interfère pas avec l'utilisation de l'outil, ce qui est agréable pour l'utilisateur. Lorsque la soufflette doit être montée, elle est emmanchée dans la partie femelle du raccord rapide à la manière d'un embout mâle, c'est-à-dire de façon particulièrement aisée. Le coulissement de la buse à l'intérieur du corps tubulaire de la soufflette de l'invention permet de commander le clapet de l'élément femelle du raccord rapide et en particulier d'admettre de l'air sous pression à l'intérieur de la buse pour la fonction de nettoyage précitée. Lorsque l'opération de soufflage est terminée, la soufflette peut être facilement déconnectée, ce qui élimine toute gêne pour l'utilisateur. La soufflette permet donc de transformer temporairement, rapidement et à moindres frais, un raccord rapide en outil de nettoyage.The blow gun of the invention constitutes a set removable intended to be mounted on the female element of a classic quick coupling and to be removed when a tool must be used. When the blow gun is disassembled, it does not interfere with the use of the tool, which is pleasant for the user. When the blow gun must be mounted, it is fitted into the female part of the fitting fast in the manner of a male end, that is to say so particularly easy. The sliding of the nozzle inside of the tubular body of the blow gun of the invention allows to control the valve of the female element of the quick coupling and in particular to admit pressurized air inside nozzle for the aforementioned cleaning function. When the blowing operation is finished, the blower can be easily disconnected, eliminating any discomfort for the user. The blow gun therefore transforms temporarily, quickly and cheaply, a fitting quick cleaning tool.

Selon un premier aspect avantageux de l'invention, le levier est articulé autour d'un axe supporté par des pattes du corps, cet axe étant clippé dans les pattes. Cet aspect de l'invention permet d'envisager un caractère démontable de la soufflette alors que le système d'articulation du levier est particulièrement simple.According to a first advantageous aspect of the invention, the lever is articulated around an axis supported by legs of the body, this axis being clipped into the legs. This aspect of the invention makes it possible to envisage a removable nature of the blow gun while the lever articulation system is particularly simple.

On peut prévoir que le levier porte une came apte à coopérer avec une rampe de la buse pour déplacer cette buse en direction du clapet. L'utilisation d'une came permet de transformer le mouvement de rotation du levier en un mouvement de translation de la buse.Provision may be made for the lever to carry a cam capable of cooperate with a ramp of the nozzle to move this nozzle in direction of the valve. The use of a cam allows transform the rotational movement of the lever into a movement of translation of the nozzle.

Dans ce cas, on peut avantageusement prévoir que la came est plus éloignée de l'axe central de la buse que la rampe. Cet aspect de l'invention permet de prévoir que, au début de l'actionnement du levier, la démultiplication de la force est plus importante alors que le déplacement de la buse est relativement lent, ce qui permet de vaincre l'effort exercé sur le clapet de l'élément femelle par l'air sous pression. Au contraire, lorsque le clapet est ouvert, c'est-à-dire lorsque les forces dues à la pression sont équilibrées de part et d'autre de celui-ci puisqu'il n'y a plus étanchéité, la rampe peut démultiplier la translation en se rapprochant de l'axe central de la buse pour obtenir une ouverture rapide du clapet. Grâce à cet aspect de l'invention, le mouvement d'ouverture est optimisé du point de vue des efforts et de la vitesse d'ouverture.In this case, it can advantageously be provided that the cam is further from the central axis of the nozzle than the ramp. This aspect of the invention provides that, at the start of actuation of the lever, the reduction of the force is more important when the displacement of the nozzle is relatively slow, which overcomes the effort exerted on the valve of the female element by pressurized air. At on the contrary, when the valve is open, i.e. when the forces due to the pressure are balanced on the one hand and other of it since there is no longer sealing, the ramp can multiply the translation by approaching the axis center of the nozzle to obtain rapid opening of the valve. Thanks to this aspect of the invention, the opening movement is optimized in terms of efforts and opening speed.

On peut avantageusement prévoir que la came est ménagée sur une patte reliant une partie du levier destiné à être manipulé à l'axe d'articulation du levier sur le corps. Ceci contribue à l'effet de démultiplication.It can advantageously be provided that the cam is arranged on a lug connecting part of the lever intended to be manipulated to the axis of articulation of the lever on the body. This contributes to the multiplier effect.

Selon un autre aspect avantageux de l'invention la buse porte, à son extrémité destinée à pénétrer dans l'élément femelle, un anneau de poussée du clapet. Cet anneau permet d'adapter le diamètre extérieur de la buse à celui du clapet. Ainsi, la buse peut avoir un diamètre extérieur de l'ordre de 3 mm alors que le clapet peut avoir un diamètre supérieur, de l'ordre de 3 à 30 mm, dépendant du type de l'élément femelle de raccord rapide et, en particulier, de sa pression nominale de travail.According to another advantageous aspect of the invention, the nozzle door, at its end intended to penetrate into the element female, a valve thrust ring. This ring allows to adapt the outside diameter of the nozzle to that of the valve. Thus, the nozzle can have an outside diameter of the order of 3 mm while the valve may have a larger diameter, from from 3 to 30 mm, depending on the type of female element of quick coupling and, in particular, its nominal pressure of job.

Selon un autre aspect avantageux de l'invention, la buse est pourvue d'un cran définissant deux logements de réception d'une patte élastique du corps, cette patte étant disposée de telle sorte que son extrémité pénètre sélectivement dans l'un des logements. Cet aspect de l'invention permet d'améliorer l'ergonomie d'utilisation de la soufflette en générant deux positions différenciées de la buse vers lesquelles tend naturellement la soufflette sous l'effet de l'effort élastique créé par la patte du corps.According to another advantageous aspect of the invention, the nozzle is provided with a notch defining two receiving housings of an elastic tab of the body, this tab being arranged so that its end selectively enters one housing. This aspect of the invention makes it possible to improve the ergonomics of use of the blow gun by generating two differentiated positions of the nozzle towards which tends the blowgun naturally under the effect of elastic force created by the leg of the body.

Selon un autre aspect avantageux de l'invention, le mouvement de pivotement du levier est limité par l'appui de ce levier sur le corps ou sur la buse. On peut, en particulier, prévoir que le corps porte une butée, apte à coopérer avec une partie correspondante du levier lorsque la buse est déplacée vers l'intérieur de l'élément femelle, et que la buse porte une butée, apte à coopérer avec une butée correspondante du levier lorsque la buse est déplacée vers l'extérieur de l'élément femelle. According to another advantageous aspect of the invention, the movement of pivoting of the lever is limited by the support of this lever on the body or on the nozzle. We can, in particular, provide that the body carries a stop, capable of cooperating with a corresponding part of the lever when the nozzle is moved towards the inside of the female element, and that the nozzle carries a stop, able to cooperate with a corresponding stop of the lever when the nozzle is moved out of the element female.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaítront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'une soufflette conforme à l'invention, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une coupe axiale d'une soufflette conforme à l'invention montée sur un élément femelle d'un raccord rapide, la soufflette n'étant pas activée ;
  • La figure 2 est une vue analogue à la figure 1 alors que la soufflette est activée ;
  • la figure 3 est une vue extérieure de la soufflette seule, dans la position de la figure 2, avec arrachement partiel et
  • la figure 4 est une coupe axiale selon la ligne IV-IV à la figure 3 ; on y a représenté en III-III la ligne d'arrachement de la figure 3.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a blow gun according to the invention, given solely by way of example and made with reference to the accompanying drawings in which:
  • Figure 1 is an axial section of a blower according to the invention mounted on a female element of a quick connector, the blower not being activated;
  • Figure 2 is a view similar to Figure 1 while the blower is activated;
  • FIG. 3 is an external view of the blower alone, in the position of FIG. 2, with partial cutaway and
  • Figure 4 is an axial section along the line IV-IV in Figure 3; there is shown in III-III the tear line of Figure 3.

Le corps de l'élément femelle A d'un raccord rapide représenté à la figure 1 est constitué par l'assemblage de deux pièces tubulaires, à savoir une pièce principale 1 et une pièce arrière 2, cet assemblage étant opéré par encliquetage élastique. Un ensemble formé par un clapet tubulaire 3, un siège ou joint 4, un porte-clapet 5 et un ressort de rappel 6 est maintenu en place à l'intérieur d'un alésage central la de la pièce 1 grâce à la pièce 2. Le porte-clapet 5 assure la retenue d'un joint torique 7 destiné à remplir une fonction d'étanchéité. Le clapet 3 et le porte-clapet 5 peuvent être réalisés dans une pièce monobloc. Le corps formé des éléments 1 et 2 est entouré par un manchon de manoeuvre 8 et une douille antérieure 9, la douille 9 étant encliquetée élastiquement à l'intérieur du manchon 8.The body of the female element A with a quick coupling shown in Figure 1 consists of the assembly of two tubular parts, namely a main part 1 and a part rear 2, this assembly being operated by elastic snap-fastening. An assembly formed by a tubular valve 3, a seat or seal 4, a valve holder 5 and a return spring 6 is held in place inside a central bore the of the part 1 thanks to part 2. The valve holder 5 ensures the retention an O-ring 7 intended to fulfill a sealing function. The valve 3 and the valve holder 5 can be produced in a single piece. The body formed of elements 1 and 2 is surrounded by an operating sleeve 8 and an anterior sleeve 9, the sleeve 9 being snapped elastically inside sleeve 8.

Une bague 10, dite de verrouillage, pourvue de griffes longitudinales 10a tournées vers l'avant, c'est-à-dire vers la gauche de la figure 1, coulisse sur la pièce 1. L'extrémité libre de chacune des griffes 10a comporte une tête profilée 10b destinée à se coincer en arrière d'un épaulement radial externe d'un embout mâle prévu pour coopérer avec l'élément femelle A. Les griffes 10a constituent donc des moyens d'immobilisation d'une partie mâle à l'intérieur de l'élément femelle A.A ring 10, called a locking ring, provided with longitudinal claws 10 has turned towards the front, that is to say to the left of FIG. 1, slides on the part 1. The free end of each of the claws 10 a has a profiled head 10 b intended to be trapped behind an external radial shoulder of a male end piece intended to cooperate with the female element A. The claws 10 a therefore constitute means for immobilizing a male part inside the female element A.

La soufflette B conforme à l'invention est destinée à être montée dans l'élément A. Elle comprend un corps 51 en forme de manchon tubulaire pourvu d'une gorge périphérique radiale 52 destinée à recevoir les têtes 10b des griffes 10a, à la manière représentée à la figure 1. Dans cette position, le corps 51 est fermement immobilisé par rapport à l'élément femelle A.The blower B according to the invention is intended to be mounted in the element A. It comprises a body 51 in the form of a tubular sleeve provided with a radial peripheral groove 52 intended to receive the heads 10 b of the claws 10 a , to as shown in Figure 1. In this position, the body 51 is firmly immobilized relative to the female element A.

Dans l'alésage central 53 du corps 51, est disposée une buse 54 en forme de tube qui peut coulisser par rapport au corps 51.In the central bore 53 of the body 51, is disposed a nozzle 54 in the form of a tube which can slide relative to the body 51.

Par ailleurs, un levier 55 est articulé sur le corps 51 grâce à un axe 56 clippé dans deux pattes dont une seule est visible sur les figures avec la référence 57.Furthermore, a lever 55 is articulated on the body 51 thanks to a pin 56 clipped into two legs of which only one is visible in the figures with the reference 57.

Dans la position de la figure 1, le corps 51 est immobilisé par rapport à l'élément femelle A, mais aucune action n'est exercée par la soufflette B sur le clapet 4.In the position of FIG. 1, the body 51 is immobilized relative to female element A, but no action is exerted by the blower B on the valve 4.

Dans la position de la figure 2, le levier 55 subit une force F tendant à déplacer la partie destinée à être manipulée ou manette 58 en direction du manchon 8. Par cette action, une came 59 réalisée sur une patte 60 reliant la manette 58 à l'axe 56 vient en appui sur une rampe 61 façonnée sur la surface extérieure de la buse 54. Ainsi, la buse 54 est déplacée en direction du clapet 3.In the position of FIG. 2, the lever 55 undergoes a force F tending to move the part intended for handling or lever 58 in the direction of the sleeve 8. By this action, a cam 59 produced on a tab 60 connecting the lever 58 to the axis 56 comes to rest on a ramp 61 shaped on the surface outside of the nozzle 54. Thus, the nozzle 54 is moved in valve direction 3.

A l'extrémité 62 de la buse 54 est monté un anneau 63 présentant une face radiale de diamètre sensiblement égal à la face exposée du porte-clapet 5. Ainsi, l'extrémité 62 de la buse 54 entraíne l'anneau 63 qui pousse le porte-clapet 5 à l'encontre de la force du ressort 6. Ceci a pour effet de décoller le clapet 3 de son joint 4 et de permettre la circulation de l'air comprimé depuis la canalisation amont vers la buse 54, ce qui est représenté par la flèche d'écoulement E. La soufflette demeure dans cette position d'écoulement de l'air comprimé tant que la manette 58 demeure appuyée sur le manchon 8.At the end 62 of the nozzle 54 is mounted a ring 63 having a radial face of diameter substantially equal to the exposed face of the valve holder 5. Thus, the end 62 of the nozzle 54 drives the ring 63 which pushes the valve holder 5 to against the force of the spring 6. This has the effect of remove the valve 3 from its seal 4 and allow circulation compressed air from the upstream pipe to the nozzle 54, which is represented by the flow arrow E. The air gun remains in this air flow position compressed as long as the handle 58 remains pressed on the sleeve 8.

Un cran 64 est prévu à l'extérieur de la buse 54 et définit deux logements 65 et 66, de réception de la tête 67 d'une patte élastique 68 formée dans le corps 51. Dans la position de la figure 2, la tête 67 est en place dans le logement 65, de sorte que l'élasticité de la patte 68 s'oppose à un mouvement de la buse 54 vers la gauche de la figure 2. En d'autres termes, l'élasticité de la patte 68 permet de créer une force de réaction à l'effort de fermeture du clapet due au ressort 6. Cette construction améliore le confort d'utilisation de la soufflette dans la mesure où l'utilisateur ne ressent pas l'intégralité de l'effort de poussée dû au ressort 6.A notch 64 is provided on the outside of the nozzle 54 and defines two housings 65 and 66, for receiving the head 67 of an elastic tab 68 formed in the body 51. In the position of Figure 2, the head 67 is in place in the housing 65, so that the elasticity of the tab 68 is opposed to a movement of the nozzle 54 to the left of FIG. 2. In in other words, the elasticity of the tab 68 makes it possible to create a reaction force to the valve closing force due to the spring 6. This construction improves user comfort blow gun if the user does not feel the entire thrust force due to the spring 6.

Par ailleurs, dans la position de la figure 1, la tête 67 de la patte 68 est en place dans le logement 66, de sorte qu'elle s'oppose à une manoeuvre inopportune du levier 55. En d'autres termes, l'enfoncement de la buse 54 en direction du clapet 3 ne peut résulter que d'un effort de l'utilisateur suffisant pour faire passer la tête 67 de la patte 68 au-dessus du cran 64. On évite ainsi les ouvertures intempestives de la soufflette.Furthermore, in the position of FIG. 1, the head 67 of lug 68 is in place in housing 66, so that it is opposed to an untimely operation of the lever 55. In in other words, the insertion of the nozzle 54 towards the valve 3 can only result from user effort enough to move head 67 from tab 68 above notch 64. This avoids untimely opening of the blower.

En référence à la figure 3, on note que la came 59 est plus éloignée de l'axe central XX' de la buse 54 que la rampe 61. Cette construction permet d'obtenir un mouvement relativement lent de la buse 54 au début de son déplacement en direction du clapet, donc une force de déplacement du clapet intense, apte à vaincre la résistance due à la pression régnant en amont du clapet et à la force du rappel du ressort 6. Au contraire, vers la fin du mouvement de déplacement de la buse 54 en direction du clapet 4, ce mouvement peut être rapide et ne nécessite pas de force importante dans la mesure où le décollement du clapet 3 par rapport au joint 4 a permis un équilibrage quasi-immédiat des pressions en amont et en aval de ce clapet.Referring to Figure 3, we note that the cam 59 is further from the central axis XX 'of the nozzle 54 than the ramp 61. This construction makes it possible to obtain a movement relatively nozzle 54 slowly at the start of its movement towards of the valve, therefore a displacement force of the valve intense, able to overcome the resistance due to the prevailing pressure upstream of the valve and by the force of the spring return 6. At on the contrary, towards the end of the nozzle movement movement 54 towards the valve 4, this movement can be rapid and does not require significant force since the detachment of the valve 3 relative to the seal 4 allowed a almost immediate balancing of pressures upstream and downstream of this valve.

Comme il apparait plus clairement à la figure 3, une butée 69 est prévue sur le corps 51 pour limiter le mouvement de la patte 60, et donc de l'ensemble du levier 55, autour de l'axe 56. Dans la position des figures 2 et 3, la patte 60 est en appui contre la butée 69.As shown more clearly in Figure 3, a stop 69 is provided on the body 51 to limit the movement of the leg 60, and therefore of the lever assembly 55, around the axis 56. In the position of FIGS. 2 and 3, the tab 60 is in support against the stop 69.

Par ailleurs, la buse 54 porte une collerette radiale 70 destinée à coopérer avec un nez 71 du levier 55 pour limiter le mouvement de basculement du levier 55 dans la direction opposée à la force F. Dans la position de la figure 1, la collerette 70 sert de butée au nez 71 du levier 55. Furthermore, the nozzle 54 carries a radial flange 70 intended to cooperate with a nose 71 of the lever 55 to limit the tilting movement of the lever 55 in the opposite direction at force F. In the position of FIG. 1, the flange 70 serves as a stop for the nose 71 of the lever 55.

Ainsi, les butées 69 et 70 permettent de limiter l'amplitude du pivotement du levier 55 et, par là même, le déplacement de la buse 54, ce déplacement étant par ailleurs contrôlé élastiquement grâce à la patte 68.Thus, the stops 69 and 70 make it possible to limit the amplitude of the pivoting of the lever 55 and, thereby, the displacement of the nozzle 54, this movement being moreover controlled elastically thanks to tab 68.

La soufflette B peut être facilement montée et démontée sur l'élément A à la manière de l'embout mâle d'un raccord rapide alors qu'elle fonctionne de manière particulièrement satisfaisante.Blow gun B can be easily assembled and disassembled on element A like the male end of a fitting fast while it works particularly satisfactory.

On note également que la soufflette B, une fois démontée de l'élément femelle A, constitue un ensemble unitaire qui peut être stocké sans risque de se démonter.We also note that the blower B, once disassembled of the female element A, constitutes a unitary assembly which can be stored without risk of disassembly.

L'invention a été présentée avec le levier 55 articulé autour d'un axe. Cependant, d'autres moyens de commande du coulissement de la buse 54 dans le corps 51 peuvent utilisés tels que, notamment, une bague extérieure en prise avec la buse. Cette bague pourrait comprendre une rampe rectiligne ou hélicoïdale permettant de démultiplier l'effort appliqué à la buse.The invention has been presented with the articulated lever 55 around an axis. However, other means of controlling the sliding of the nozzle 54 in the body 51 can be used such as, in particular, an outer ring engaged with the nozzle. This ring could include a straight ramp or helical to increase the force applied to the nozzle.

Claims (10)

  1. A compressed-air blower (B) actuated by a lever (55), characterised in that it comprises a substantially tubular body (51) capable of cooperating with means (10) for immobilising within a female quick-release coupling element (A) to keep said body in position in a central bore (1a) in said female element and an overall tubular nozzle (54) capable of displacing, by sliding within said body, a valve (3) of said female element, the sliding of said nozzle within said body being controlled by said lever (55).
  2. A blower according to Claim 1, characterised in that said lever (55) is articulated about a spindle (56) supported by lugs (57) of said body (51), said spindle being clipped into said lugs.
  3. A blower according to Claim 1, characterised in that said lever (55) bears a cam (59) capable of cooperating with a ramp (61) of said nozzle (54) to displace said nozzle in the direction of said valve (3).
  4. A blower according to Claim 3, characterised in that said cam (59) is farther from the central axis (XX') of said nozzle (54) than said ramp.
  5. A blower according to Claims 2 and 3, characterised in that said cam (59) is formed on a lug (60) connecting a part (58) of said lever (55) which is intended to be manipulated to said spindle (56).
  6. A blower according to one of the preceding claims, characterised in that said nozzle (54) bears, at its end (62) intended to penetrate into said female element, a thrust ring (63) for said valve (3).
  7. A blower according to one of the preceding claims, characterised in that said nozzle (54) is provided with a ridge (64) defining two housings (65, 66) for receiving an elastic lug (68) of said body, said lug being arranged such that its end (67) penetrates selectively into one of said housings.
  8. A blower according to one of the preceding claims, characterised in that the pivoting movement of said lever (55) is limited by said lever bearing against said body (51) or said nozzle (54).
  9. A blower according to Claim 8, characterised in that said body (51) bears a stop (69) capable of cooperating with a corresponding part (60) of said lever (55) when said nozzle (54) is displaced towards the inside of said female element (A).
  10. A blower according to Claim 8, characterised in that said nozzle (54) bears a stop (70) capable of cooperating with a corresponding stop (71) of said lever (55) when said nozzle (54) is displaced towards the outside of said female element (A).
EP98420148A 1997-09-01 1998-08-28 Lever actuated compressed-air mouth piece Expired - Lifetime EP0899028B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711033A FR2767896B1 (en) 1997-09-01 1997-09-01 COMPRESSED AIR BELLOWS CONTROLLED BY A LEVER
FR9711033 1997-09-01

Publications (2)

Publication Number Publication Date
EP0899028A1 EP0899028A1 (en) 1999-03-03
EP0899028B1 true EP0899028B1 (en) 2002-10-16

Family

ID=9510778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98420148A Expired - Lifetime EP0899028B1 (en) 1997-09-01 1998-08-28 Lever actuated compressed-air mouth piece

Country Status (6)

Country Link
US (1) US6032878A (en)
EP (1) EP0899028B1 (en)
AT (1) ATE226117T1 (en)
DE (1) DE69808710T2 (en)
ES (1) ES2182251T3 (en)
FR (1) FR2767896B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200239294Y1 (en) * 1999-05-20 2001-09-25 이황우 Air gun for many talent
US6752335B2 (en) * 2000-05-23 2004-06-22 Summit Tool Company Pivoting blow-gun

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1425900A1 (en) * 1965-05-07 1969-04-03 Luciano Bracchino Blowing or spraying equipment
IT209219Z2 (en) * 1985-11-19 1988-09-20 Gervasoni Bono BODY OF AIR PISTOL PERFECTED WITH VALVE HOUSED IN THE CONNECTION FITTING WITH THE COMPRESSED AIR SUPPLY DUCT.
US4676269A (en) * 1986-03-07 1987-06-30 Tuthill Corporation Connector assembly

Also Published As

Publication number Publication date
DE69808710T2 (en) 2003-07-03
ES2182251T3 (en) 2003-03-01
FR2767896B1 (en) 1999-10-22
FR2767896A1 (en) 1999-03-05
DE69808710D1 (en) 2002-11-21
US6032878A (en) 2000-03-07
EP0899028A1 (en) 1999-03-03
ATE226117T1 (en) 2002-11-15

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