EP0169957B1 - Butterfly valve for an accordion and its dynamic coupling to the key - Google Patents

Butterfly valve for an accordion and its dynamic coupling to the key Download PDF

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Publication number
EP0169957B1
EP0169957B1 EP19840830233 EP84830233A EP0169957B1 EP 0169957 B1 EP0169957 B1 EP 0169957B1 EP 19840830233 EP19840830233 EP 19840830233 EP 84830233 A EP84830233 A EP 84830233A EP 0169957 B1 EP0169957 B1 EP 0169957B1
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EP
European Patent Office
Prior art keywords
butterfly
key
valve
accordion
frame
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EP19840830233
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German (de)
French (fr)
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EP0169957A1 (en
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Mario Crucianelli
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Individual
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Individual
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Priority to DE8484830233T priority Critical patent/DE3478522D1/en
Priority to EP19840830233 priority patent/EP0169957B1/en
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10B—ORGANS, HARMONIUMS OR SIMILAR WIND MUSICAL INSTRUMENTS WITH ASSOCIATED BLOWING APPARATUS
    • G10B3/00—Details or accessories
    • G10B3/06—Valves; Sleeves
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D11/00—Accordions, concertinas or the like; Keyboards therefor
    • G10D11/02—Actions

Definitions

  • the invention relates to a butterfly valve for accordion and means for its engagement with a key.
  • toppa valves are well known, made as a hammer actuated by the key by means of an angular lever with a very long arm, one end of which is integral with the hammer, while the other is attached to the button.
  • This valve produced as a hammer, implies and requires a very careful execution of the profile of the section of the lever arm between the setting of the key and the hammer; this section, especially in certain keys, is of a particularly considerable length.
  • the spring installed in the setting of the key develops, because of the long lever arm between the key and the hammer, an excessive force which goes to the disadvantage of the agility of the keyboard.
  • This force in fact, must always be able to guarantee the closing of the airtight valve by means of the pressure of the hammer, placed at the end of a long lever arm, on the sound box.
  • toppa Another disadvantage of the so-called "toppa” valves with the hammer closure is that the surface of the hammer which presses on the plane of the sound box - where the outlet openings (orifices) have been made air from the valves and therefore from the sound create an obstacle to the normal reflux of the air, which involves an alteration in the quality of the sound.
  • hammer valves have the disadvantage of beating on the metal background where the bells are installed and this disadvantage is particularly annoying in the recording room.
  • the role of the invention is to provide an accordion valve whose perfect airtight closure does not depend on the careful profile of the control lever and which allows, in opening, the exit of air without no impediment; whose return spring, when closed, is of considerably lower force than the spring of a traditional valve; and whose application costs are considerably reduced.
  • a butterfly valve for accordion and means for its engagement with a button according to the invention are claimed in claim 1.
  • An accordion according to the invention is claimed in claim 8.
  • a sound box (CA) with its keyboard backrest (ST) has been represented.
  • ST keyboard backrest
  • VT valve of the traditional type
  • F a lever
  • L lever
  • VT traditional valve
  • two valves are shown according to the invention: the first, which has been generically indicated by the number (1), dynamically engaged with a white button (B); the second aligned along the same longitudinal axis as the first, which has been generically indicated by the number (1 '), dynamically engaged with a black key (N).
  • the two valves have a fundamentally identical structure and differ only by the dynamic use of their respective button in opening and closing, as we will describe more clearly.
  • the first valve (1) consists of a frame which has a rectangular shape inside which is formed a single buttonhole opening (orifice) (2).
  • a hole has been drilled (4) and, on the opposite side, a cavity (5) has been made to accommodate respectively a small stud (4 ') and a small stud (5 ') of a butterfly (3) which, by pivoting on said pins (4') and (5 '), can open and seal the orifice (2) buttonhole.
  • the butterfly has a raised edge (6) on which the free end (7 ") clamps with a spiral spring (7) fixed by its other end to the valve frame.
  • a stud (8) is provided for dynamic use with the inclined plane (10) of a block of sliding (9).
  • the sliding block (9) slides forward and backward on a step (11) formed on the long side of the chassis, in correspondence with the raised edge (6) of the window (3) and, under the action of the key ( B) and of the spring (7), it actuates the opening and closing of the valve.
  • the second valve (1 ') aligned with the first valve along the same longitudinal axis as the latter, is structurally identical.
  • the step of the frame is on the extension of the step (11) of the valve frame (1) for the sliding of the sliding block (9).
  • the butterfly (3 ') of the valve (1') also has a stud (8 ') at the end of the raised edge (6') addressed to the keyboard backrest (ST).
  • each of the valves (1, 1 ′) is controlled by using two springs which stress the button and the valve separately.
  • the spring (7) in this case, while ensuring a more reliable airtight valve, also exerts less pressure on the resonance chamber.
  • the valve is held by the beat of the butterfly (3) pressed by the spring (7) against the upper (13) and lower (13,) edges of the chassis.
  • the frames preferably made of plastic, can be applied individually, or else be made in a single continuous piece.
  • valves according to the invention make it possible to eliminate the care necessary for the profile of the long lever arms between the key and the valve, saving material and 50% of the assembly time, but above all they allow eliminating the hand d 'specialized work.
  • the air resistance of the valves no longer depends on the adhesion of the hammer to the sound box entrusted to the execution of the profiles of a long arm, but it depends on the pressure of a spring which acts on the butterfly itself. valve.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Details Of Valves (AREA)

Description

L'invention regarde une vanne à papillon pour accordéon et moyen pour son enclenchement avec une touche.The invention relates to a butterfly valve for accordion and means for its engagement with a key.

Dans la construction des accordéons, on connaît bien les traditionnelles vannes soi-disantes "toppa", réalisées en guise de marteau actionné par la touche au moyen d'un levier angulaire au bras très long dont l'une des extrémités est solidaire du marteau, tandis que l'autre est solidaire de la touche.In the construction of accordions, the traditional so-called "toppa" valves are well known, made as a hammer actuated by the key by means of an angular lever with a very long arm, one end of which is integral with the hammer, while the other is attached to the button.

Cette vanne, réalisée en guise de marteau, implique et exige une exécution très soignée du profil du tronçon du bras de levier entre l'entablure de la touche et le marteau; ce tronçon, surtout en certaines touches, est d'une longueur particulièrement considérable.This valve, produced as a hammer, implies and requires a very careful execution of the profile of the section of the lever arm between the setting of the key and the hammer; this section, especially in certain keys, is of a particularly considerable length.

En l'absence de la susdite exécution, l'appui du marteau sur le plan de la caisse de résonance n'est pas parfait et, par conséquent, il manque l'indispensable fermeture étanche à l'air de la vanne quand le soufflet souffle l'air avec trop de pression vainquant l'action de rappel du ressort installé dans l'entablure de la touche.In the absence of the above execution, the support of the hammer on the plane of the sound box is not perfect and, therefore, the essential airtight closure of the valve is missing when the bellows blows the air with too much pressure defeating the return action of the spring installed in the setting of the button.

Le susdit profil, il est inutile de le rappeler, doit être exécuté manuellement de la part d'une main d'oeuvre extrêmement spécialisée dans le secteur et, par conséquent, cela se révélera très cher.The above profile, needless to say, must be performed manually by a workforce extremely specialized in the sector and, therefore, it will prove to be very expensive.

Le ressort installé dans l'entablure de la touche développe, à cause du long bras de levier entre la touche et le marteau, une force excessive qui va au désavantage de l'agilité du clavier.The spring installed in the setting of the key develops, because of the long lever arm between the key and the hammer, an excessive force which goes to the disadvantage of the agility of the keyboard.

Cette force, en effet, doit pouvoir garantir toujours la fermeture de la vanne étanche à l'air au moyen de la pression du marteau, disposé à l'extrémité d'un long bras de levier, sur la caisse de résonance.This force, in fact, must always be able to guarantee the closing of the airtight valve by means of the pressure of the hammer, placed at the end of a long lever arm, on the sound box.

On retrouve cette solution, constructive dans le clapet rotatif décrit et illustré dans le brevet DE-C-707 723, où l'on propose un clapet pour acordéons, que l'on peut définir du type à "toppa", du moment qu'il tourne autour d'un axe longitudinal externe au clapet, qui résulte librement basculant autour de son propre axe médian longitudinal, uniquement dans le but de garantir sa meilleure adaptation à son plan de support et certainement pas pour son ouverture. La force qui garantit la fermeture du clapet décrit dans le brevet DE-C-707 723 est la force exercée sur la touche par le ressort de rappel positionné sous la touche même, un long levier de liaison étant prévu entre la touche et les moyens de support du clapet, avec les inconvénients ci- dessus mentionnés et ci-de suite mis en évidenice.We find this constructive solution in the rotary valve described and illustrated in patent DE-C-707,723, where a valve for accordions is proposed, which can be defined as "toppa", as long as it rotates around a longitudinal axis external to the valve, which results freely tilting around its own longitudinal median axis, only in order to guarantee its best adaptation to its support plane and certainly not for its opening. The force which guarantees the closing of the valve described in patent DE-C-707 723 is the force exerted on the key by the return spring positioned under the key itself, a long connecting lever being provided between the key and the means of support of the valve, with the drawbacks mentioned above and immediately highlighted.

On a souvent relevé que, pour rendre la tenue des vannes aussi fiable que possible, on a dû choisir la force des ressorts installés dans les entrablures des touches d'une façon telle qu'on à été obligé à augmenter l'épaisseur du plan de métal (d'habitude en aluminium) de la caisse de résonance.It has often been noted that, to make the holding of the valves as reliable as possible, we had to choose the force of the springs installed in the keyholes in such a way that we had to increase the thickness of the plane of metal (usually aluminum) of the sound box.

La pression exercée par l'ensemble des leviers à marteau sur le plan de la caisse de résonance non seulement oblige, souvent, à augmenter l'épaisseur du plan susdit, mais elle impose la réalisation de plusieurs orifices de sortie de l'air pour chaque vanne en correspondance de la surface de fermeture du marteau.The pressure exerted by all of the hammer levers on the plane of the resonance box not only often forces the thickness of the above-mentioned plane to be increased, but it also imposes the production of several air outlet orifices for each valve in correspondence with the closing surface of the hammer.

En effet, un seul orifice, dont la surface égale la surface du marteau, allégèrerait excessivement le plan de la caisse de résonance, déjà considérablement soumis aux sollicitations de la pression des ressorts, comme nous venons de décrire.Indeed, a single orifice, the surface of which equals the surface of the hammer, would excessively lighten the plane of the resonance box, already considerably subjected to the stresses of the pressure of the springs, as we have just described.

Mais plusieurs orifices au lieu d'un seul, dont la surface égale celle du plan de fermeture de la vanne, entraînent un volume d'air en sortie inférieur au détriment de la qualité r,u son et d'une ouverture plus petite du soufflet qui aiderait le musicien.But several orifices instead of a single one, the surface of which equals that of the valve closing plane, result in a lower volume of air at the outlet to the detriment of the quality r, u sound and a smaller opening of the bellows that would help the musician.

Un autre inconvenient des vannes soi-disantes à "toppa" avec la fermeture à marteau est que la surface du marteau qui appuie sur le plan de la caisse de résonance - où l'on a pratiqué les ouvertures (orifices) de sortie de l'air des vannes et donc du son-créent un obstacle au reflux normal de l'air, ce qui comporte une altération de la qualité du son.Another disadvantage of the so-called "toppa" valves with the hammer closure is that the surface of the hammer which presses on the plane of the sound box - where the outlet openings (orifices) have been made air from the valves and therefore from the sound create an obstacle to the normal reflux of the air, which involves an alteration in the quality of the sound.

Enfin, les vannes à marteau ont l'inconvénient de battre sur le fond de métal où sont installées les sonnières et cet inconvénient est particulièrement ennuyeux dans la salle d'enregistrement.Finally, hammer valves have the disadvantage of beating on the metal background where the bells are installed and this disadvantage is particularly annoying in the recording room.

Le rôle de l'invention, par conséquent, est de proposer une vanne pour accordéon dont la parfaite fermeture étanche à l'air ne dépende pas du profil soigné du levier de commande et qui permette, en ouverture, la sortie de l'air sans aucun empêchement; dont le ressort de rappel, en fermeture, soit d'une force considérablement inférieure par rapport au ressort d'une vanne traditionnelle; et dont les frais d'application soient considérablement réduits.The role of the invention, therefore, is to provide an accordion valve whose perfect airtight closure does not depend on the careful profile of the control lever and which allows, in opening, the exit of air without no impediment; whose return spring, when closed, is of considerably lower force than the spring of a traditional valve; and whose application costs are considerably reduced.

Une vanne à papillon pour accordéon et moyen pour son enclenchement avec une touche selon l'invention sont revendiqués dans la revendication 1. Un accordéon selon l'invention est revendiqué dans la revendication 8.A butterfly valve for accordion and means for its engagement with a button according to the invention are claimed in claim 1. An accordion according to the invention is claimed in claim 8.

D'autres caractéristiques et particularités vont être illustrées ci-dessous d'une façon plus détaillée, en référence à une forme préférée de réalisation représentée, à titre d'exemple indicatif et non limitatif, dans les dessins inclus où:

  • - la fig. 1 est une vue perspective d'un dossier à clavier et d'une caisse de résonance sur le plan de laquelle.on a appliqué une vanne traditionnelle et deux vannes selon l'invention;
  • - la fig. 2 est une vue éclatée de la vanne selon l'invention;
  • - la fig. 3 est une section transversale de la vanne selon l'invention représentée antérieurement sur la fig. 1.
Other characteristics and particularities will be illustrated below in a more detailed manner, with reference to a preferred embodiment shown, by way of non-limiting example, in the included drawings where:
  • - fig. 1 is a perspective view of a keyboard file and a sound box on the plane of which. A traditional valve and two valves according to the invention have been applied;
  • - fig. 2 is an exploded view of the valve according to the invention;
  • - fig. 3 is a cross section of the valve according to the invention previously shown in FIG. 1.

Sur la fig. 1, on à représenté une caisse de résonance (CA) avec son dossier à clavier (ST) On peut remarquer, dessinée en tirets, une vanne du type traditionnel (à "toppa") (VT) entablée en (F) sur le dossier à clavier au moyen d'un levier (L).In fig. 1, a sound box (CA) with its keyboard backrest (ST) has been represented. One can notice, drawn in dashes, a valve of the traditional type ("toppa") (VT) set up in (F) on the keyboard file by means of a lever (L).

En particulier, il est important de fixer l'attention sur la longueur du levier (L), sur les maints pliages à coude et latéraux auxqeuls il à été soumis, ainsi que sur les trois orifices (OR), dessinés eux aussi en tirets, ménagés dans la caisse de résonance (CA) et sur lesquels s'appuie étanche le marteau (M) sous l'action d'un seul ressort, non visible sur le dessin, installé dans l'entablure (F).In particular, it is important to fix attention on the length of the lever (L), on the many bends at elbow and side to which only it has been subjected, as well as on the three orifices (OR), also drawn in dashes, formed in the resonance box (CA) and on which the hammer (M) seals tightly under the action of a single spring, not visible in the drawing, installed in the recess (F).

A côté de la vanne traditionnelle (VT), on à représenté deux vannes selon l'invention: la première, que l'on a génériquement indiquée du numéro (1), enclenchée dynamiquement à une touche blanche (B); la seconde alignée selon le même axe longitudinal que la première, que l'on a génériquement indiquée du numéro (1'), enclenchée dynamiquement à une touche noire (N).Next to the traditional valve (VT), two valves are shown according to the invention: the first, which has been generically indicated by the number (1), dynamically engaged with a white button (B); the second aligned along the same longitudinal axis as the first, which has been generically indicated by the number (1 '), dynamically engaged with a black key (N).

Les deux vannes ont une structure fondamentalement identique et ne diffèrent que par l'emploi dynamique de leur touche respective en ouverture et en fermeture, comme nous allons décrire plus clairement.The two valves have a fundamentally identical structure and differ only by the dynamic use of their respective button in opening and closing, as we will describe more clearly.

La première vanne (1) se compose d'un châssis qui présente une forme rectangulaire à l'intérieur duquel est ménagée une seule ouverture à boutonnière (orifice) (2).The first valve (1) consists of a frame which has a rectangular shape inside which is formed a single buttonhole opening (orifice) (2).

Dans l'un des petits côtés du châssis à rectangle on a percé un trou (4) et, sur le côté opposé, on a ménagé une cavité (5) pour loger respectivement un petit téton (4') et un petit téton (5') d'un papillon (3) qui, en pivotant sur lesdits tétons (4') et (5'), peut ouvrir et fermer étanche l'orifice (2) à boutonnière.In one of the short sides of the rectangle frame, a hole has been drilled (4) and, on the opposite side, a cavity (5) has been made to accommodate respectively a small stud (4 ') and a small stud (5 ') of a butterfly (3) which, by pivoting on said pins (4') and (5 '), can open and seal the orifice (2) buttonhole.

Le papillon présente un bord relevé (6) sur lequel mord l'extrémité libre (7") à pince d'un ressort spiral (7) fixé par son autre extrémité au châssis de la vanne.The butterfly has a raised edge (6) on which the free end (7 ") clamps with a spiral spring (7) fixed by its other end to the valve frame.

A l'extrémité du bord relevé (6), adressé vers l'intérieur de la caisse de résonance (CA), on a prévu un téton (8) pour l'emploi dynamique avec le plan incliné (10) d'un bloc de glissement (9). Le bloc de glissement (9) coulisse en avant et en arrière sur un gradin (11) ménagé sur le grand côté du châssis, en correspondance du bord relevé (6) du guichet (3) et, sous l'action de la touche (B) et du ressort (7), il actionne l'ouverture et la fermeture de la vanne.At the end of the raised edge (6), directed towards the inside of the resonance box (CA), a stud (8) is provided for dynamic use with the inclined plane (10) of a block of sliding (9). The sliding block (9) slides forward and backward on a step (11) formed on the long side of the chassis, in correspondence with the raised edge (6) of the window (3) and, under the action of the key ( B) and of the spring (7), it actuates the opening and closing of the valve.

La seconde vanne (1') alignée à la première vanne selon le même axe longitudinal que celle-ci, est structuralement identique.The second valve (1 ') aligned with the first valve along the same longitudinal axis as the latter, is structurally identical.

Le gradin du châssis se trouve sur le prolongement du gradin (11) du châssis de la vanne (1) pour le coulissement du bloc de glissement (9).The step of the frame is on the extension of the step (11) of the valve frame (1) for the sliding of the sliding block (9).

Le papillon (3') de la vanne (1') présente, lui aussi, un téton (8') à l'extrémité du bord relevé (6') adressée vers le dossier à clavier (ST).The butterfly (3 ') of the valve (1') also has a stud (8 ') at the end of the raised edge (6') addressed to the keyboard backrest (ST).

Mais l'emploi dynamique avec la touche (N) est dirigé grâce au téton (8') sans l'intervention d'un bloc de glissement, comme dans le cas de la vanne (1).But the dynamic use with the key (N) is directed thanks to the stud (8 ') without the intervention of a sliding block, as in the case of the valve (1).

De la fig. 1, on peut noter comme l'on commande chacune des vannes (1, 1') en se servant de deux ressorts qui sollicitent séparément la touche et la vanne. Cela comporte une plus petite sollicitation sur la caisse de résonance (CA) par rapport à la traditionnelle vanne à marteau et cela garantit une meilleure tenue de celle-ci, puisqu'elle ne dépend plus de la parfaite adhérence du marteau sur le plan de la caisse de résonance liée à l'exécution soignée du profil du levier entre la touche et le marteau, mais elle ne dépend que de la pression du ressort (7) sur le papillon (3). Le ressort (7), en ce cas-là, tout en assurant une plus fiable vanne étanche à l'air, exerce aussi une pression moins forte sur la caisse de résonance.From fig. 1, it can be noted that each of the valves (1, 1 ′) is controlled by using two springs which stress the button and the valve separately. This involves less stress on the resonance box (CA) compared to the traditional hammer valve and this guarantees a better hold of the latter, since it no longer depends on the perfect adhesion of the hammer on the plane of the sound box linked to the careful execution of the profile of the lever between the key and the hammer, but it only depends on the pressure of the spring (7) on the butterfly (3). The spring (7), in this case, while ensuring a more reliable airtight valve, also exerts less pressure on the resonance chamber.

En outre, cela permet de percer un seul orifice pour la vanne au lieu de plusieurs orifices séparés comme dans les vannes traditionnelles, puisqu'il n'existe plus aucun problème d'allègement de la caisse de résonance (CA).In addition, this makes it possible to drill a single orifice for the valve instead of several separate orifices as in traditional valves, since there is no longer any problem of reducing the resonance chamber (CA).

Il en résulte un plus grand volume d'air en sortie, donc une qualité meilleure du son et une plus petite ouverture du soufflet, qui aide le musicien.This results in a larger volume of air at the outlet, therefore a better quality of sound and a smaller opening of the bellows, which helps the musician.

Nous référant toujours à la fig. 1, il faut encore observer que soit la vanne (7), soit la vanne (1') sont enclenchées dynamiquement à leur touche respective (B) et (N) au moyen de leviers (14), (14') bien plus courts par rapport aux leviers des vannes traditionnelles, mais surtout il est indispensable de remarquer que ces leviers, puisqu'ils ne doivent plus être directement responsables de la tenue des vannes, peuvent être profilés beaucoup plus facilement et rapidement par une main d'oeuvre non spécialisée.Still referring to fig. 1, it should also be observed that either the valve (7) or the valve (1 ') are dynamically engaged at their respective button (B) and (N) by means of levers (14), (14') much shorter compared to the levers of traditional valves, but above all it is essential to note that these levers, since they no longer have to be directly responsible for the holding of the valves, can be profiled much more easily and quickly by unskilled labor .

Grâce à la fig. 3, il est possible de comprendre encore mieux d'autres particularités de l'invention. On peut noter que la paroi longitudinale (12) de la boutonnière (2) du côté opposé à celui du bord relevé (6) du papillon (3) est incliné de haut en bas et vers l'extérieur du châssis. Ce profil favorise la sortie de l'air lors de l'ouverture de la vanne.Thanks to fig. 3, it is possible to understand even better other features of the invention. It can be noted that the longitudinal wall (12) of the buttonhole (2) on the side opposite that of the raised edge (6) of the butterfly (3) is inclined up and down and towards the outside of the frame. This profile favors the exit of air when the valve opens.

La tenue de la vanne est assurée par la battue du papillon (3) pressé par le ressort (7) contre les bords supérieurs (13) et inférieurs (13,) du châssis.The valve is held by the beat of the butterfly (3) pressed by the spring (7) against the upper (13) and lower (13,) edges of the chassis.

Le gradin (11), sur lequel coulisse le bloc de glissement (9) est fermé de côté par la paroi d'un couple successif de vannes (1, 1') qui seront placées aux côtés de celles que nous venons de décrire.The step (11), on which slides the sliding block (9) is closed from the side by the wall of a successive pair of valves (1, 1 ') which will be placed alongside those which we have just described.

Enfin, l'extrémité du ressort (7) est profilé à pince (7") pour favoriser une prise meilleure sur le bord relevé (6) du papillon (3).Finally, the end of the spring (7) is profiled with clamps (7 ") to promote better grip on the raised edge (6) of the butterfly (3).

Ce qui vient d'être décrit pour une vanne (1) d'une touche blanche (B) est naturellement valable aussi pour une vanne (1') d'une touche noire (N) avec les seules différences du grédin (6) et de l'emploi dynamique avec les touches respectives, comme nous avons décrit et représenté dans le dessin.What has just been described for a valve (1) with a white button (B) is naturally also valid for a valve (1 ') with a black button (N) with the only differences from the rogue (6) and dynamic use with the respective keys, as we have described and shown in the drawing.

Toutes les autres vannes appliquées à la caisse de résonance à côté de celles que nous avons décrites sont identiques aux susdites vannes.All the other valves applied to the sound box next to those which we have described are identical to the above-mentioned valves.

Les châssis, réalisés de préférence en plastique, peuvent être appliqués individuellement, ou bien être réalisés en une seule pièce continue.The frames, preferably made of plastic, can be applied individually, or else be made in a single continuous piece.

D'après tout ce qui vient d'être décrit et illustré, on peut constater que l'invention à tout à fait satisfait le but qu'elle s'était proposée.From all that has just been described and illustrated, it can be seen that the invention has completely satisfied the aim which it had proposed.

Les vannes selon l'invention permettent d'éliminer les soins necessaires au profil des longs bras de levier entre la touche et la vanne, en épargnant du matériel et 50 % du temps d'assemblage, mais surtout elles permettent d'éliminer la main d'oeuvre spécialisée. Ce sont deux ressorts séparés qui commandent les vannes, c'est pourquoi la caisse de résonance est soumise aux sollicitations d'une façon tout à fait inférieure, ce qui permet la réalisation d'un seul orifice continu pour chaque vanne, avec, par conséquent, un plus grand volume d'air en sortie, donc un son meilleur, et une ouverture moins grande du soufflet.The valves according to the invention make it possible to eliminate the care necessary for the profile of the long lever arms between the key and the valve, saving material and 50% of the assembly time, but above all they allow eliminating the hand d 'specialized work. These are two separate springs which control the valves, this is why the sound box is subjected to the stresses in a completely lower way, which allows the realization of a single continuous orifice for each valve, with, consequently , a larger volume of air at the outlet, therefore better sound, and a smaller opening of the bellows.

La tenue d'air des vannes ne dépend plus de l'adhérence du marteau à la caisse de résonance confiée à l'exécution des profils d'un long bras, mais elle dépend de la pression d'un ressort qui agit sur le papillon même de la vanne.The air resistance of the valves no longer depends on the adhesion of the hammer to the sound box entrusted to the execution of the profiles of a long arm, but it depends on the pressure of a spring which acts on the butterfly itself. valve.

Le reflux de l'air en sortie ne rencontre plus aucun obstacle de la part du marteau, n'altérant plus le son.The reflux of the outlet air no longer encounters any obstacle on the part of the hammer, no longer altering the sound.

L'inconvénient des marteaux qui battent sur le plan de la caisse de résonance est éliminé.The disadvantage of hammers beating on the plane of the sound box is eliminated.

Enfin, on élimine l'essai final (le soi-disant étamage), relatif à l'alignement des touches et à la parfaite tenue des vannes.Finally, the final test (the so-called tinning), relating to the alignment of the keys and the perfect holding of the valves, is eliminated.

L'invention à été décrite et illustrée en référence à une forme préférée de réalisation. Il est bien entendu que les formes de réalisation, les dispositions, les dimensions et les proportions pourront être modifiées, sans sortir pour cela du cadre de la présente invention.The invention has been described and illustrated with reference to a preferred embodiment. It is understood that the embodiments, the arrangements, the dimensions and the proportions may be modified without departing from the scope of the present invention.

Claims (9)

1. Butterfly valve for accordion and means for connecting the same to the key, consisting of:
- a base rectangular frame, in which there is a single hole (2) this frame being suitable for mounting on an air outlet opening of a sound box (CA) of an accordion;
- a butterfly (3, 3') to open and close the hole (2) on said frame, the butterfly being supported within the short sides of the rectangular frame, the axis of the above butterfly being parallel to the longitudinal axis of the frame;
- a spiral spring (7, 7') fixed to said frame and operating the butterfly (3, 3') to close the hole subsequent to rotatian of the butterfly valve around its axis;
- a pin (8, 8') protruding sideways from said butterfly and suitable for being connected dynamically with a key lever (B, N) to open the hole subsequent to rotation of the butterfly around its axis.
2. Butterfly valve for accordion and means for cannecting the same to a key according to claim 1, characterized in that each valve is controlled with the cooperation af two springs operating separately, one on key (B, N) and the other (7) on the butterfly (3, 3') of the valve.
3. Butterfly valve for accordion and means for connecting the same to a key, according to claim 2, characterized in that the free end of the spring (7, 7') has a plier like shape (7") to improve the fixing on the lifted edge (6, 6') of the butterfly (3, 3').
4. Butterfly valve for accordion and means for connecting the same to a key according to claim 1, characterized in that the longitudinal section (12) of the frame on the opposite side to the raised edge (6, 6') of the butterfly (3, 3') is slanted from top to bottom and outwards to encourage the air to flow out.
5. Butterfly valve far accordion and means for connecting the same to a key according to claim 4, characterized in that the air tight seal is provided by the butterfly (3, 3') pressed by the spring (7, 7') against the bottom edge (13) of a high section of the longitudinal part of the frame and on the upper edge (13') of the frame on the side opposite to the longitudinal part.
6. Butterfly valve for accordion and means for connecting the same to a key according to claim 1, characterized in that the butterfly, is opened by a white key (8), by means of a thrust forward by the lever (14) of the key (B), of a slide (9) which with its slanted plane (10) pushes the butterfly (3) pin (8) up, lifting the butterfly against the action of the spring (7).
7. Butterfly valve for accordion and means for connecting it to a key accarding to claim 1, characterized in that the valve (1') is opened by a blach key (N) by means of the direct action of the key (N) lever which pushes the butterfly (3) pin (8') up, lifting the butterfly against the action of the spring (7').
8. Accordion including the valve and means for connecting it according to one of the claims from 1 to 7.
9. Accordion according to claim 8, including a bellows, characterized in that the air blown by the bellows flows out through a single hole (2) whose surface is equal to that of the butterfly (3, 3').
EP19840830233 1984-07-31 1984-07-31 Butterfly valve for an accordion and its dynamic coupling to the key Expired EP0169957B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8484830233T DE3478522D1 (en) 1984-07-31 1984-07-31 Butterfly valve for an accordion and its dynamic coupling to the key
EP19840830233 EP0169957B1 (en) 1984-07-31 1984-07-31 Butterfly valve for an accordion and its dynamic coupling to the key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840830233 EP0169957B1 (en) 1984-07-31 1984-07-31 Butterfly valve for an accordion and its dynamic coupling to the key

Publications (2)

Publication Number Publication Date
EP0169957A1 EP0169957A1 (en) 1986-02-05
EP0169957B1 true EP0169957B1 (en) 1989-05-31

Family

ID=8193094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840830233 Expired EP0169957B1 (en) 1984-07-31 1984-07-31 Butterfly valve for an accordion and its dynamic coupling to the key

Country Status (2)

Country Link
EP (1) EP0169957B1 (en)
DE (1) DE3478522D1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217600C (en) *
FR718087A (en) * 1931-06-03 1932-01-19 Matth Hohner Akt Ges Air valve for air operated musical instruments
DE707723C (en) * 1938-02-08 1941-07-01 Cantulia Neuerburg Kom Ges Tone air flap storage for harmonicas
US2230162A (en) * 1939-11-25 1941-01-28 Lidblom Richard Accordion

Also Published As

Publication number Publication date
DE3478522D1 (en) 1989-07-06
EP0169957A1 (en) 1986-02-05

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