EP0210206B1 - Accordion or bandoneon - Google Patents

Accordion or bandoneon Download PDF

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Publication number
EP0210206B1
EP0210206B1 EP86900780A EP86900780A EP0210206B1 EP 0210206 B1 EP0210206 B1 EP 0210206B1 EP 86900780 A EP86900780 A EP 86900780A EP 86900780 A EP86900780 A EP 86900780A EP 0210206 B1 EP0210206 B1 EP 0210206B1
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Prior art keywords
accordion
plates
crossbar
bandoneon
case
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EP86900780A
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German (de)
French (fr)
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EP0210206A1 (en
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Marcel Pelletier
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    • 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
    • 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
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/22—Material for manufacturing stringed musical instruments; Treatment of the material
    • 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
    • G10D9/00—Details of, or accessories for, wind musical instruments
    • G10D9/08—Material for manufacturing wind musical instruments; Treatment of the material

Definitions

  • the present invention relates to an accordion or bandoneon according to claim 1.
  • the invention overcomes these drawbacks.
  • the realization of these instruments in materials of minimum hardness of 85 shores D in particular in carbon fiber or other compound of fiber with resin and hardener, or in composite, of a hardness higher than wood and plastic; which allows the vibrations produced by the blades to propagate in the parts produced, and to obtain a higher speed-sound, as well as an increase in wavelengths, and more defined sounds.
  • the whole instrument can be made or only a few parts.
  • the average hardness of the carbon fiber is 85 to 90 shores D.
  • the weight decreases for the parts produced by about 50 to 80%. This allows the user to have a greater musical expression, with less effort, a lighter instrument, to play it longer, to tire less.
  • the hardness of the carbon fiber compound is about 85 to 90 D shores. This material therefore has a significantly higher reflectance of acoustic waves. Indeed the hardness of carbon fiber is about 31% higher compared to a thermosetting (plastic) and 42% compared to wood.
  • the extension of the plates (1) makes it possible to find the space necessary at the location of a certain number of holes or lights for the fixing means (2) which can be in particular screws, bolts, or nuts, to increase the pressure between the said plates (1) and the bed base (4).
  • the increase in this pressure promotes the propagation of vibrations emitted by the blades (3) fixed on the plate (1) in the bed base (4).
  • This set consisting of (1) + (2) + (3) + (4) being made more homogeneous, there is much less loss of sound.
  • the fixing system will be improved depending on whether at least 2 screw elements (2) are shown in figure 1 or 4 screw elements (2) are shown in figure 2 or 6 screw elements (2) are shown in figure 3 or 8 screw elements (2) are shown in figure 4.
  • screw elements (2) are shown in figure 1 or 4 screw elements (2) are shown in figure 2 or 6 screw elements (2) are shown in figure 3 or 8 screw elements (2) are shown in figure 4.
  • the implantation of the screw elements (2) could be screws: transverse figure 5 solution 1 or blind figure 5 solution 2 or bolts figure 5 solution 3.
  • this invention proposes a counterbore in the bed base (4) to center the plate (1) and therefore avoid its displacement.
  • the seal between the plates (1) and the base (4) is ensured by 1 or 2 lips (10) which allows the contact of the plates (1) with the base (4).
  • the known system for fixing the box spring (4) to the accordion body (6) is provided by aluminum plates, which are fixed by screws on the edge of the body to press the legs of the box spring.
  • This fixing has an average efficiency for the propagation of vibrations, the sealing as well as its displacement.
  • the seal was obtained by a fiber joint (felt-like) with skin, Figure 8 (13).
  • the invention improves this seal by inserting between the valves (12) and the plate on which they are supported, 1 or 2 lips which have the effect of reducing the bearing surface, of increasing the seal pressure while maintaining the same sealing pressure, maintaining the same operating pressure of the button.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust Silencers (AREA)
  • Springs (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Stringed Musical Instruments (AREA)

Abstract

The device for improving the sound of accordions and bandonions is characterized in that it is comprised of materials having a minimum hardness of 70 shores D, particularly of carbon fibre or other fibre compounds, or of composites (which may be coated for decorative purposes with materials having a lower or higher hardness), comprising platelets (1) arranged in the facing of the chest (4) by means of fixing elements (2). The chest (4) is fixed to an edge inside the case of the accordion (6) by screw elements (8). The sealing between the valves (12) and the plate on which they are bearing is improved by one or two lips (14), (15).

Description

La présente invention a pour objet un accordéon ou bandonéon selon la revendication 1.The present invention relates to an accordion or bandoneon according to claim 1.

La fabrication des accordéons et bandonéons, effectuée en bois et en thermodurcissable (matière plastique) restitue des sons qui peuvent être améliorés ainsi que les fixations et l'étanchéité insuffisante des joints, et entraîne un poids trop important.The manufacture of accordions and bandoneons, made of wood and thermosetting (plastic) restores sounds that can be improved as well as the fixings and insufficient sealing of the joints, and results in too great a weight.

L'invention permet de remédier à ces inconvénients. La réalisation de ces instruments dans des matériaux de dureté minimum de 85 shores D notamment en fibre de carbone ou autre composé de fibre avec résine et durcisseur, ou en composite, d'une dureté supérieure au bois et au plastique; ce qui permet aux vibrations produites par les lames de se propager dans les parties réalisées, et d'obtenir une vitesse-son plus elevée, ainsi qu'une augmentation des longueurs d'ondes, et des sons plus définis.The invention overcomes these drawbacks. The realization of these instruments in materials of minimum hardness of 85 shores D in particular in carbon fiber or other compound of fiber with resin and hardener, or in composite, of a hardness higher than wood and plastic; which allows the vibrations produced by the blades to propagate in the parts produced, and to obtain a higher speed-sound, as well as an increase in wavelengths, and more defined sounds.

Tout l'instrument peut être réalisé ou seulement quelques parties. La dureté moyenne de la fibre de carbone est de 85 à 90 shores D. Le poids diminue pour les parties réalisées d'environ 50 à 80%. Cela permet à l'utilisateur d'avoir une expression musicale plus grande, avec un effort moins important, un instrument plus léger, le jouer plus longtemps, de moins fatiguer.The whole instrument can be made or only a few parts. The average hardness of the carbon fiber is 85 to 90 shores D. The weight decreases for the parts produced by about 50 to 80%. This allows the user to have a greater musical expression, with less effort, a lighter instrument, to play it longer, to tire less.

La dureté des matériaux utilisés actuellement est la suivante:- de 60 à 70 shores D pour les thermodurcissables (matières plastiques)

  • - de 55 à 65 shores D pour le hêtre, sapin etc...
The hardness of the materials currently used is as follows: - from 60 to 70 shores D for thermosets (plastics)
  • - from 55 to 65 shores D for beech, fir etc ...

La dureté du composé de fibre de carbone est de 85 à 90 shores D environ. Ce matériau a donc un pouvoir réfléchissant des ondes acoustiques nettement supérieur. En effet la dureté de la fibre de carbone est supérieur d'environ 31% par rapport à un thermodurcissable (matière plastique) et de 42% par rapport au bois.The hardness of the carbon fiber compound is about 85 to 90 D shores. This material therefore has a significantly higher reflectance of acoustic waves. Indeed the hardness of carbon fiber is about 31% higher compared to a thermosetting (plastic) and 42% compared to wood.

La vitesse du son (vitesse en mètres par seconde) étant augmentée à durée de vibrations (t) égale, on percevra une vitesse-son plus elevée (fréquence v=nombre de vibrations completes a la seconde), ainsi qu'une augmentation des longueurs d'ondes (λ en mètres) voirformules 1 et 2.

Figure imgb0001
Figure imgb0002
(t=durée d'une vibration complete en secondes). Les modes de fixation des plaquettes sur le somier sont réalisés actuellement soit par des clous, soit par de la cire sur le pourtour. Ces fixations sont insuffisantes pour permettre aux vibrations produites par les lames de se propager totalement dans le sommier. De plus, avec l'usure, les clous se retirant légèrement ou la cire sèche et se décolle. Dans les deux cas cela accentue la déperdition du son, par le fait de la diminution de la pression entre les plaquettes et le sommier.The speed of sound (speed in meters per second) being increased for equal duration of vibrations (t), we will perceive a higher speed-sound (frequency v = number of complete vibrations per second), as well as an increase in lengths of waves (λ in meters) see formulas 1 and 2.
Figure imgb0001
Figure imgb0002
 (t = duration of a complete vibration in seconds). The methods of fixing the plates to the bed base are currently produced either by nails or by wax around the perimeter. These fixings are insufficient to allow the vibrations produced by the blades to propagate completely in the bed base. In addition, with wear, the nails withdraw slightly or the wax dries and peels off. In both cases this accentuates the loss of sound, due to the decrease in pressure between the pads and the bed base.

La présente invention sera mieux comprise en se reférant aux figures.

  • - La figure 1 représentant une vue du sommier à l'intérieur de la caisse d'accordéon.
  • - Les figures 2-3-4 différents modes de fixation et de réalisation des plaquettes.
  • - La figure 6 le mode d'étanchéité connu.
  • - La figure 7 l'étanchéité entre les dîtes plaquettes (1) et le sommier (4) et les modes de réalisation.
  • - La figure 9 une vue de côté d'un ensemble- touche avec le mode d'étanchéité connu.
  • - Les figures 9-10-11 réalisation de l'étanchéité des clapets.
The present invention will be better understood by referring to the figures.
  • - Figure 1 showing a view of the box spring inside the accordion case.
  • - Figures 2-3-4 different methods of fixing and making the plates.
  • - Figure 6 the known sealing mode.
  • - Figure 7 the seal between said plates (1) and the box spring (4) and the embodiments.
  • - Figure 9 a side view of a key assembly with the known sealing mode.
  • - Figures 9-10-11 realization of the sealing of the valves.

Le rallongement des plaquettes (1) permet de trouver l'espace nécessaire à l'emplacement d'un certain nombre de trous ou lumières pour les moyens de fixation (2) pouvant être notamment des vis, boulons, ou écrous, pour augmenter la pression de serrage entre les dîtes plaquettes (1) et le sommier (4). L'augmentation de cette pression favorise la propagation des vibrations émises par les lames (3) fixées sur la plaquette (1) dans le sommier (4). Cet ensemble constitué de (1)+(2)+(3)+(4) étant rendu plus homogène, il y a nettement moins de déperdition du son.The extension of the plates (1) makes it possible to find the space necessary at the location of a certain number of holes or lights for the fixing means (2) which can be in particular screws, bolts, or nuts, to increase the pressure between the said plates (1) and the bed base (4). The increase in this pressure promotes the propagation of vibrations emitted by the blades (3) fixed on the plate (1) in the bed base (4). This set consisting of (1) + (2) + (3) + (4) being made more homogeneous, there is much less loss of sound.

Le système de fixation sera amélioré suivant que l'on place au moins 2 éléments vissants (2) figure 1 ou 4 éléments vissants (2) figure 2 ou 6 éléments vissants (2) figure 3 ou 8 éléments vissants (2) figure 4. Pour conserver les plaquettes (1) connues il est possible d'insérer au moins 2 éléments vissants (2) en bordure de celles-ci ou dans des lumières, pour que les têtes ou écrous viennent en appui sur le pourtour des plaquettes (1) ou dans les lumières (9).The fixing system will be improved depending on whether at least 2 screw elements (2) are shown in figure 1 or 4 screw elements (2) are shown in figure 2 or 6 screw elements (2) are shown in figure 3 or 8 screw elements (2) are shown in figure 4. To keep the known plates (1) it is possible to insert at least 2 screw elements (2) at the edge thereof or in slots, so that the heads or nuts come to bear on the periphery of the plates (1) or in the lights (9).

L'implantation des éléments vissants (2) pourra être des vis: transversale figure 5 solution 1 ou borgne figure 5 solution 2 ou des boulons figure 5 solution 3.The implantation of the screw elements (2) could be screws: transverse figure 5 solution 1 or blind figure 5 solution 2 or bolts figure 5 solution 3.

Dans le système traditionnel d'étanchéité des plaquettes (1) sur le sommier (4), celles-ci étaient fixées directement sur le joint "à plat" figure 6. Cela occasionnait d'une part, des fuites au niveau plan-joint, et celui-ci diminuait la propagation des vibrations produites par les lames dans le sommier (4) et la caisse (6) de l'instrument; d'autre part, un déplacement de la plaquette (1) au moment de la fixation pouvait se produire. Ce déplacement provoquait le fait que la lame (3) ou la peau (5) frottait sur le sommier (4) et annihilait leurs vibrations.In the traditional sealing system of the plates (1) on the bed base (4), these were fixed directly to the gasket "flat" in Figure 6. This caused on the one hand, leaks at the joint level, and this reduced the propagation of vibrations produced by the blades in the base (4) and the body (6) of the instrument; on the other hand, a displacement of the plate (1) at the time of attachment could occur. This displacement caused the fact that the blade (3) or the skin (5) rubbed on the bed base (4) and annihilated their vibrations.

Pour remédier à cet état de fait, cette invention propose un lamage dans le sommier (4) pour centrer la plaquette (1) et donc éviter son déplacement.To remedy this state of affairs, this invention proposes a counterbore in the bed base (4) to center the plate (1) and therefore avoid its displacement.

De plus, l'étanchéité entre les plaquettes (1) et le sommier (4) est assurée par 1 ou 2 lèvres (10) qui permet le contact des plaquettes (1) avec le sommier (4).In addition, the seal between the plates (1) and the base (4) is ensured by 1 or 2 lips (10) which allows the contact of the plates (1) with the base (4).

Le système connu de fixation du sommier (4) sur la caisse d'accordéon (6) est assuré par des plaquettes en aluminium, qui sont fixées par des vis sur le rebord de la caisse pour appuyer sur les pattes du sommier. Cette fixation a une efficacité moyenne pour la propagation des vibrations, l'étanchéité ainsi que son déplacement.The known system for fixing the box spring (4) to the accordion body (6) is provided by aluminum plates, which are fixed by screws on the edge of the body to press the legs of the box spring. This fixing has an average efficiency for the propagation of vibrations, the sealing as well as its displacement.

Pour l'améliorer, il est nécessaire de provoquer une bordure (7) à l'intérieur de la caisse d'accordéon (6) sur tout le périmètre ou d'une manière ponctuelle à l'endroit des pattes du sommier (4) de façon qu'elle soit intimement liée en appui avec ses rebords (7) à l'aide d'une ou deux vis (8), ou pour conserver le système connu, ajouter une ou deux vis pour augmenter la pression de serrage entre les plaquettes et les pattes du sommier.To improve it, it is necessary to cause a border (7) inside the accordion case (6) over the entire perimeter or in a punctual manner at the location of the legs of the box spring (4). so that it is intimately linked in support with its edges (7) using one or two screws (8), or to keep the known system, add one or two screws to increase the clamping pressure between the pads and the legs of the box spring.

Dans le système traditional connu des ensembles-touches, l'étanchéité était obtenue par un joint en fibre (genre feutre) avec peau, figure 8 (13). L'invention améliore cette étanchéité en intercalant entre les clapets (12) et la plaque sur laquelle ils s'appuient, 1 ou 2 lèvres qui ont pour effet en diminuant la surface portante, d'augmenter la pression d'étanchéité en conservant la même pression d'étanchéité, en conservant la même pression d'utilisation de la touche.In the traditional known system of key sets, the seal was obtained by a fiber joint (felt-like) with skin, Figure 8 (13). The invention improves this seal by inserting between the valves (12) and the plate on which they are supported, 1 or 2 lips which have the effect of reducing the bearing surface, of increasing the seal pressure while maintaining the same sealing pressure, maintaining the same operating pressure of the button.

Claims (6)

1. Accordion or bandoneon which comprises a case having holes for the passage of air, a crossbar which is attached to the case and which carries plates provided with leaves arranged so as to be actuated by the passage of air under the control of valves actuated by the musician, characterized in that the case (6) and/or the crossbar (4) are made at least partly of a material whereof the Shore D hardness is within the range 85 to 90 and a joint is provided at the periphery of the plates to provide air tightness between the plates and the crossbar and the said joint (11) comprises sealing lips (10) integrally formed with the crossbar or the plates.
2. Accordion or bandoneon according to Claim 1, characterized in that the material is of fibres of a synthetic material.
3. Accordion or bandoneon according to Claim 2, characterized in that the said fibres are carbon fibres.
4. Accordion or bandoneon according to one of the preceding claims, characterized in that the said plates (1) are fixed to the crossbar (4) by screws (2).
5. Accordion or bandoneon according to one of the preceding claims, characterized in that the said plates (1) are embedded in the crossbar.
6. Accordion or bandoneon according to one of the preceding claims, characterized in that the crossbar (4) is attached to the case (6) by lugs of the crossbar which are superposed on an internal edge (7) of the case, means (8) being provided to intimately connect the lugs so that they bear against the edge.
EP86900780A 1985-01-18 1986-01-13 Accordion or bandoneon Expired - Lifetime EP0210206B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86900780T ATE56834T1 (en) 1985-01-18 1986-01-13 ACCORDION OR BANDONEON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8500819 1985-01-18
FR8500819A FR2576442B1 (en) 1985-01-18 1985-01-18 DEVICE FOR IMPROVING THE SOUND AND WEIGHT OF ACCORDIONS AND BANDONEONS AS WELL AS GUITARS, VIOLINS, STRING DOUBLES, CLARINETS, PIANO, FLUTES, BATTERY

Publications (2)

Publication Number Publication Date
EP0210206A1 EP0210206A1 (en) 1987-02-04
EP0210206B1 true EP0210206B1 (en) 1990-09-19

Family

ID=9315458

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Application Number Title Priority Date Filing Date
EP86900780A Expired - Lifetime EP0210206B1 (en) 1985-01-18 1986-01-13 Accordion or bandoneon

Country Status (5)

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EP (1) EP0210206B1 (en)
AU (1) AU5316086A (en)
DE (1) DE3674285D1 (en)
FR (1) FR2576442B1 (en)
WO (1) WO1986004443A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH715803B1 (en) * 2019-01-18 2020-08-31 Carboneon Gmbh Hand traction instrument.
EP4134945B1 (en) * 2021-08-09 2023-09-27 Carboneon GmbH Reed plate arrangement for a manual pulling instrument, sound post arrangement for a manual pulling instrument, and manual pulling instrument

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE259800C (en) *
FR811498A (en) * 1936-09-28 1937-04-15 Method of manufacturing musical instruments such as accordions and the like
US2173617A (en) * 1938-01-03 1939-09-19 Conn Ltd C G Accordion
US4364990A (en) * 1975-03-31 1982-12-21 The University Of South Carolina Construction material for stringed musical instruments

Also Published As

Publication number Publication date
WO1986004443A1 (en) 1986-07-31
AU5316086A (en) 1986-08-13
DE3674285D1 (en) 1990-10-25
FR2576442A1 (en) 1986-07-25
FR2576442B1 (en) 1987-08-14
EP0210206A1 (en) 1987-02-04

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