FR2841028A1

FR2841028A1 - Guitar shell includes, at the connection between the shell and the neck of the guitar a cut-out in the form of a dihedron with a second face being left-handed and enabling easier access to lower frets

Info

Publication number: FR2841028A1
Application number: FR0207309A
Authority: FR
Inventors: Olivier Pozzo
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-13
Filing date: 2002-06-13
Publication date: 2003-12-19

Abstract

The guitar shell includes, at the connection between the shell and the neck (4) of the guitar, a cut-out in the form of a dihedron (7) having a first face (7a) constituted by a side of the neck and a second face (7b) by a lateral wall of the guitar shell joined to top and bottom (2) surfaces. The second quadrilateral face is left-handed and divided by a diagonal (20) into two triangles situated in a plane matched according to the diagonal in the form of an angle less than 10 degrees. On the rear face is a concavity (24,25) extending the cut-out on the bottom of the shell and on a side opposed to the connection of the neck and the shell.

Description

comportant un logement (14) propre a recevoir une etiquette signaletiquecomprising a housing (14) suitable for receiving a descriptive label

(13).(13).

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La presente invention conceme le domaine de la lutherie et interesse plus particulierement la The present invention relates to the field of violin making and is of particular interest to

conformation d'une caisse de guitare. conformation of a guitar case.

s Un premier but de ['invention est de faciliter au guitariste l'acces aux frettes basses du manche proches du chevalet; lorsque le doigt prend appui sur la corde en amont d'une frette cette derriere definit l'extremite de la zone vibratoire de la corde; les frettes les plus basses proches du chevalet raccourcissent done considerablement la partie vibrante de la corde pincee afin de produire les sonorites aigues. Or l'acces a cette zone du manche est limite ou handicape par la caisse de resonance; car la partie proximale du manche vers le chevalet s A first object of the invention is to make it easier for the guitarist to access the low frets of the neck close to the bridge; when the finger bears on the string upstream of a fret, this behind defines the end of the vibratory zone of the string; the lower frets close to the bridge therefore considerably shorten the vibrating part of the plucked string in order to produce the high tones. However access to this area of the neck is limited or handicapped by the sounding board; because the proximal part of the handle towards the bridge

surplombe la face superieure de la caisse. overlooks the upper face of the body.

On a deja prevu de conformer la caisse de resonance de fa,con a menager une encoche dans le volume de la caisse a proximite du manche et sur un cote de celui-ci; ['invention apporte des perfectionnements a cette configuration dans des conditions qui ameliorent considerablement l'aisance du jeu comme la sonorite A cet effet ['invention conceme un instrument de musique a cordes pincees du type guitare, 2 0 caracteri se en ce que la cai sse comporte au niveau du raccordement du manche et lateral ement par rapport a ce raccordement un retrait en forme de diedre dont une premiere face est constituee par un cote du manche et la seconde face par la paroi laterale de la caisse rejoignant la face superieure et le fond Avantageusement ['angle fome par le dit diedre est. d'une valeur comprise entre 30 et 50 Selon une particularite de ['invention la seconde face venue de la paroi laterale de la caisse est en forme generale de quadrilatere dont un petit cote est constitue par l'arete du diedre, les deux grands cotes paralleles conformant le raccordement de cette face sur la face It has already been planned to conform the resonance box in a manner, con to arrange a notch in the volume of the box near the handle and on one side thereof; [The invention brings improvements to this configuration under conditions which considerably improve the ease of playing as well as the sound for this purpose [The invention relates to a musical instrument with plucked strings of the guitar type, characterized in that the case sse comprises at the level of the handle connection and laterally with respect to this connection a death-shaped withdrawal, a first face of which is constituted by a side of the handle and the second face by the side wall of the body joining the upper face and the Advantageously the angle formed by the said death is. with a value between 30 and 50 According to a feature of the invention, the second face coming from the side wall of the body is in the general form of a quadrilateral, a small dimension of which is formed by the edge of the die, the two large sides parallel conforming the connection of this face on the face

superieure d'une part et le fond d'autre part de la caisse. upper on the one hand and the bottom on the other hand of the body.

Plus specialement cette seconde face venue de la paroi laterale de la caisse est legerement gauchie etant separee en deux triangles par une diagonale du dit quadrilatere, les deux triangles etant disposes dans des plans se coupant selon la cite diagonale selon un angle inferieur a 10 More specifically, this second face coming from the side wall of the body is slightly warped, being separated into two triangles by a diagonal of the said quadrilateral, the two triangles being arranged in planes intersecting according to the diagonal city at an angle less than 10

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Et la premiere face du diedre ci-dessus est formee d'une partie sensiblement plane venue du cote du manche et se prolongeant par une incurvation en forme generale de segment de cylindre venant conformer la face arriere du manche du cote oppose a sa face active receptrice And the first face of the above die is formed of a substantially flat part coming from the side of the handle and extending by a curvature in the general shape of a cylinder segment coming to conform the rear face of the handle on the side opposite to its active receiving face.

des frettes et cordes, cette face arriere se prolongeant par le fond de la caisse. frets and strings, this rear face extending through the bottom of the body.

Et le fond de la caisse comporte egalement, dans le prolongement de la base du manche et lateralement, du cote oppose au dit retrait diedral, un evidemment en forme generale de segment de calotte spherique, compris entre une arete en arc de cercle raccordant cet And the bottom of the body also includes, in the extension of the base of the handle and laterally, on the side opposite to the said deathral withdrawal, an obviously in the general shape of a spherical cap segment, comprised between an edge in an arc of a circle connecting this

evidemment sur le fond et le cote convexe de la base du manche. obviously on the bottom and the convex side of the base of the handle.

Selon encore une autre caracteristique la face avant de la caisse comporte une rainure peripherique suivant le bord de cette face a proximite immediate de son raccordement sur la paroi laterale Enfin selon encore une autre particularite, les oues de la caisse vent disposees sur le fond de According to yet another characteristic, the front face of the body has a peripheral groove along the edge of this face in the immediate vicinity of its connection to the side wall. Finally according to yet another particularity, the ears of the wind body are arranged on the bottom of

cette derriere.this behind.

D'autres caracteristiques et avantages de ['invention ressortiront encore de la description qui Other characteristics and advantages of the invention will emerge from the description which

suit et qui est donnee en relation avec une forme particuliere de realisation de ['invention en se referent aux dessins annexes La figure 1 presente une vue en perspective d'une partie de la guitare vue de face Et la figure 2 represente une vue egalement en perspective et partielle de la guitare par son fond. Selon ['ensemble des figures la guitare comporte une caisse constituee d'une face superieure 1 et d'un fond 2, raccordes par les parois laterales peripheriques 3. Le manche 4, porteur des follows and which is given in relation to a particular embodiment of the invention with reference to the accompanying drawings. FIG. 1 shows a perspective view of a part of the guitar seen from the front And FIG. 2 represents a view also in perspective and partial of the guitar by its background. According to the set of figures, the guitar comprises a body consisting of an upper face 1 and a bottom 2, connected by the peripheral lateral walls 3. The neck 4, carrying the

frettes 5 et des cordes 6, se raccorde sur la caisse. frets 5 and strings 6, connects to the body.

Selon ['invention la caisse presente lateralement par rapport au manche 4 un retrait 7 en forme de diedre rentrant. Une premiere face 7a est formee par le cote lateral du manche 4 et une seconde face 7b est venue d'un retour de la paroi laterale et peripherique de la caisse; cette seconde face 7b est de forme generale de quadrilatere sensiblement parallelepipedique; un According to the invention, the box presents laterally with respect to the handle 4 a recess 7 in the form of a reentrant diere. A first face 7a is formed by the lateral dimension of the handle 4 and a second face 7b came from a return from the lateral and peripheral wall of the body; this second face 7b has the general shape of a substantially parallelepiped quadrilateral; a

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petit cote Sa est forme par l'arrete rentrante du diedre; le petit cote oppose 8b, forme une arete saillante rejoignant la paroi laterale 3 de la caisse; les deux grands cotes 9a et 9b vent constitues par le raccordement de ce quadrilatere respectivement avec la face avant et le fond de la caisse. Le quadrilatere 7b formant la seconde face du diedre est gauchi etant partage selon la diagonale 20 en deux triangles situes dans des plans se coupant selon cette diagonale small side Sa is formed by the reentrant stop of the diedre; the short side opposes 8b, forms a projecting edge joining the side wall 3 of the body; the two large dimensions 9a and 9b wind constituted by the connection of this quadrilateral respectively with the front face and the bottom of the body. The quadrilateral 7b forming the second face of the diedre is warped being divided along the diagonal 20 into two triangles located in planes intersecting along this diagonal

et formant entre eux un angle inferieur a 10 . and forming between them an angle less than 10.

La premiere face 7a du retrait diedral se prolonge vers la face arriere ou fond de la caisse par The first face 7a of the diedral withdrawal extends towards the rear face or bottom of the body by

une zone incurvee convexe 22 definissant sensiblement un segment de cylindre. a convex curved zone 22 substantially defining a cylinder segment.

Sur le cote du manche 4, oppose au retrait diedral precedemment decrit, la caisse remonte vers l'exterieur selon une protuberance 23 se raccordant au manche par un evidemment 24 et ce dernier presente une surface arriere concave 25 comprise entre l'arriere du manche 4 et le fond de la caisse; cette concavite est en forme generale de segment de calotte spherique compris entre une arete circulaire exterieure 26 rejoignant le fond 3 et une zone incurvee convexe 27 par laquelle la concavite 25 se perd dans la surface convexe et sensiblement On the side of the handle 4, opposite to the previously described deathral withdrawal, the body rises towards the outside according to a protuberance 23 connecting to the handle by a recess 24 and the latter has a concave rear surface 25 comprised between the rear of the handle 4 and the bottom of the box; this concavity is in the general shape of a spherical cap segment comprised between an external circular edge 26 joining the bottom 3 and a convex curved zone 27 by which the concavity 25 is lost in the convex surface and substantially

hemicylindrique de l'arriere du manche. hemicylindrique of the back of the handle.

Selon la figure 1 on volt que la face avant de la caisse comporte sur son pourtour une rainure en creux 28 a proximite immediate du bord, rainure apportant une plus grande souplesse a la According to FIG. 1, it is seen that the front face of the body has on its periphery a hollow groove 28 in the immediate vicinity of the edge, a groove providing greater flexibility to the

cite face et ameliorant- les qualites acoustiques de ltensemble. quotes face and improving the acoustic qualities of the whole.

Le retrait ci-dessus decrit permet a la main active du guitariste d'acceder au plus pres et avec aisance aux frettes basses pour engendrer les sonorites les plus aigues, et la conformation de ['ensemble avec le jeu des concavites arrieres permet a la main de se laisser guider le long du manche, toujours en accedant confortablement et rapidement aux notes hautes (frettes les plus proches du chevalet ou de la table d'armature) The above described shrinkage allows the active hand of the guitarist to access as close and with ease to the low frets to generate the sharpest tones, and the conformation of the whole with the play of back concavities allows the hand let yourself be guided along the neck, always by comfortably and quickly accessing the high notes (frets closest to the bridge or the frame table)

La description qui precede n'a ete donnee qu'a titre d'exemple d'une forme de realisation de The foregoing description has been given only as an example of an embodiment of

[ ' invention et l' on pourra a partir des elements decrits realiser diverges variantes sans sortir ['invention and one will be able from the described elements to realize various variants without leaving

des limites de ['invention.limits of the invention.

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REVEiNDICATIONS 1 - Instrument de musique a cordes pincees du type guitare, caracterise en ce que la caisse comporte au niveau du raccordement du manche (4) et lateralement par rapport a ce raccordement un retrait en forme de diedre (7) dont une premiere face (7a) est constituee par un cote du manche et la seconde face (7b) par la paroi laterale (3) de la caisse rejoignant la REVEiNDICATIONS 1 - Musical instrument with plucked strings of the guitar type, characterized in that the body comprises at the level of the neck connection (4) and laterally with respect to this connection a die-shaped recess (7) including a first face ( 7a) is constituted by a side of the handle and the second face (7b) by the side wall (3) of the body joining the

face superieure ( 1) et le fond (2). upper face (1) and bottom (2).

2- Instrument de musique selon la revendication 1 et caracterise en ce que ['angle forme par le dit diedre est d'une valeur comprise entre 30 et 50 3 - Instrument de musique selon la revendication 1 et caracterise en ce que la seconde face (7b) du diedre, venue de la paroi laterale (3) de la caisse est en forme generale de quadrilatere dont un petit cote (8a) est constitue par 1'arete du diedre, les deux grands cotes (9a et 9b) paralleles conformant le raccordement de cette face sur la face superieure (1) d'une part et le 2- A musical instrument according to claim 1 and characterized in that the angle formed by said die is of a value between 30 and 50 3 - A musical instrument according to claim 1 and characterized in that the second face ( 7b) of the diedre, coming from the side wall (3) of the body is in the general form of a quadrilateral of which a small side (8a) is constituted by the edge of the diedre, the two large sides (9a and 9b) parallel conforming the connection of this face on the upper face (1) on the one hand and the

fond (2) d'autre part de la caisse.bottom (2) on the other hand of the body.

4- Instrument de musique selon la revendication 3 et caracterise en ce que la seconde face (7b) venue de la paroi laterale de la caisse est legerement gauchie etant separee en deux triangles par une diagonale (20) du dit quadrilatere, les deux triangles separes par la diagonale etant disposes dans des plans se coupant selon la cite diagonale selon un angle inferieur a . 5- Instrument de musique selon la revendication 1 caracterise en ce que la premiere face (7a) du diedre est formee d'une partie sensiblement plane venue du cote du manche (4) et se prolongeant par une incurvation en forme generale de segment de cylindre (22) venant conformer la face arriere du manche du cote oppose a sa face active receptrice des frettes et 4- Musical instrument according to claim 3 and characterized in that the second face (7b) coming from the side wall of the body is slightly warped being separated into two triangles by a diagonal (20) of said quadrilateral, the two separate triangles by the diagonal being arranged in planes intersecting according to the diagonal city at an angle less than a. 5- Musical instrument according to claim 1 characterized in that the first face (7a) of the die is formed by a substantially flat part coming from the side of the handle (4) and extending by a curvature in general shape of cylinder segment (22) conforming to the rear face of the neck on the side opposite to its active face receiving frets and

cordes, cette face arriere se prolongeant par le fond de la caisse. strings, this rear face extending through the bottom of the body.

6 - Instrument de musique selon la revendication 1 caracterise en ce que le fond (2) de la caisse comporte egalement, dans le prolongement de la base du manche et lateralement, du cote oppose au dit retrait diedral (7), un evidemment (24) en forme generale de segment de calotte spherique (25) , compris entre une ardte en arc de cercle (26) raccordant cet 6 - Musical instrument according to claim 1 characterized in that the bottom (2) of the body also comprises, in the extension of the base of the neck and laterally, on the side opposite to said diedral withdrawal (7), an obviously (24 ) in the general shape of a spherical cap segment (25), comprised between an arcuate arch (26) connecting this

evidemment sur le fond (2) d'une part, et le cote convexe (27) de la base du manche. obviously on the bottom (2) on the one hand, and the convex dimension (27) of the base of the handle.

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6- instrument de musique selon la revendication l, caracterise en ce que la face avant (l) de la caisse comporte une rainure peripherique (28) suivant le bord de cette face a proximity immediate de son arete de raccordement sur la paroi laterale (3). 7 - Instrument de musique selon la revendi cati on l et cacacteri se en ce que les ouies de la 6- musical instrument according to claim l, characterized in that the front face (l) of the body has a peripheral groove (28) along the edge of this face in immediate proximity to its connection edge on the side wall (3 ). 7 - Musical instrument according to the resale cati on l and cacacteri se in that the gills of the

caisse vent disposees sur le fond de cette derriere. wind case arranged on the bottom of this behind.