EP0433430A1 - Instrument de musique a archet en composite. - Google Patents
Instrument de musique a archet en composite.Info
- Publication number
- EP0433430A1 EP0433430A1 EP90910767A EP90910767A EP0433430A1 EP 0433430 A1 EP0433430 A1 EP 0433430A1 EP 90910767 A EP90910767 A EP 90910767A EP 90910767 A EP90910767 A EP 90910767A EP 0433430 A1 EP0433430 A1 EP 0433430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- wall
- section
- musical instrument
- fraction
- 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.)
- Granted
Links
Classifications
-
- 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
Definitions
- the present invention relates to a musical instrument with a bow, that is to say belonging to the fa i lLe of violins, violas, violas and double basses.
- the bill of violins in composite material that is to say at least The soundboard is based on oriented fibers (carbon or aromatic polyamides. Arranged in more or less crossed layers and connected together by a resin, has always was a failure because the sounds produced could never reach the richness of the sounds of a classical instrument.
- the present invention intends to propose an instrument using as one of its components, a composite material which does not have the drawbacks of prior instruments. To this end, it therefore relates to a musical instrument with a bow, at least of which the soundboard consists of a thin wall of composite material comprising a superposition of at least two crossed layers of long oriented fibers, covered on at least one of its faces a lining material of density significantly lower than that of the fibers, in which the arrangement of the nap? s of fibers is such that the ratio: modulus of elasticity Longitudinal / modulus of transverse elasticity of the wall is higher along the axis of symmetry Lon ⁇ gitudinal of the wall than in the vicinity of lateral edges of the instrument.
- FIG. 1 represents a front view of a violin of which at least the soundboard conforms to the invention
- FIG. 1 is a side view of the violin of Figure 1
- FIG. 3 is a section along line III-III of Figure 2 of the soundboard of the invention
- - Figure 4 is an enlarged view of an elementary fraction of the section of Figure 3
- FIGS. 1 and 2 are diagrams illustrating two possible basic structures for a composite wall usable as soundboard or background.
- the violin shown in FIGS. 1 and 2 conventionally takes a soundboard 1, a bottom 2 and sides 3 closing laterally the sound box.
- a handle 4 is coupled to the resonance box at the end of which strings 5 are fixed by pegs, these strings passing over an easel 6 located between the gills 7 of the soundboard, to lead to the tailpiece 8 of l 'instrument.
- the soundboard 1 is a vaulted wall shaped by molding a composite material comprising a superposition of layers (A, B, C, D, ..) of carbon fibers prepreg in a polymeric sand resin, these layers being crossed at selected angles. On each side of this superposition, there is a cladding in wood veneer, Y and Z, which gives the table the characteristics from the vibratory point of view (damping, decrease in the overall density of the wall ).
- Figure 4 is the drawing of an elementary fraction dS of the section of the table shown in Figure 3.
- This fraction enlarged disproportionately for the needs of the presentation, is crossed by fibers 10 to 14 (or bundles of fi bres), oriented in a direction determined according to the tablecloth to which they belong and / or their position in the tablecloth.
- the fibers 10, 12 and 14, belonging to different layers are perpendicular to the fraction dS of section therefore parallel to the longitu ⁇ dinal axis 9 of symmetry of the instrument;
- the fibers 11 and 13 belonging to plies interposed between the preceding plies are crossed with respect to the fibers 10,12,14.
- FIG. 5 shows a wall according to the intention in which one of the plies A of fibers is laterally truncated.
- the wall thus constructed presents on these edges a lower modulus of elasticity ratio than in the center. It is of course possible to cut the sheet A according to a contour adapted to the final shape of the violin.
- FIG. 6 it can be seen that at least one of the sheets A has fibers which are oriented at the edges much more transversely than at the center where they are almost parallel to the axis of symmetry of the wall. This is also achieved by this means, by combining one or more plies of this type by crossing them with layers of straight longitudinal fibers or at an angle, to the construction of a wall meeting the required characteristics.
- the soundboard 1 comprises among its tablecloths tablecloths of the kind of that in FIG. 6. It may also include tablecloths of the kind A of FIG. 5
- These arrangements show that the ratio of the elasticity modules is maximum at the center of the instrument, along its axis of symmetry Longitudinal 9. What is described for the soundboard also applies to the background from the sound box.
- the soundboard and the back can include Local reinforcements by adding additional layers of Limited area. For example, we know that there exists in Souls a soul lodged inside the resonance box slightly forcibly between the table and the bottom, near one of the legs of the easel.
- the contact zones of the table and the bottom with the core can be reinforced by adding, before plating, these additional partial plies which mechanically reinforce these zones where there is, due to the core, a concentration of stresses.
- the ratio of the elastic moduli can be greater than that of an area near the axis of symmetry of the wall and therefore a fortiori of an area near the edges of the instrument, but the surface concerned is limited.
- the ratio of the elasticity modules is decreasing either continuously or by level from the center to the edges .
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Stringed Musical Instruments (AREA)
- Laminated Bodies (AREA)
- Adornments (AREA)
- Catching Or Destruction (AREA)
- Electrophonic Musical Instruments (AREA)
- Details Of Garments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8909048A FR2649525B1 (fr) | 1989-07-05 | 1989-07-05 | Instrument de musique a archet en materiau composite |
FR8909048 | 1989-07-05 | ||
PCT/FR1990/000501 WO1991000589A1 (fr) | 1989-07-05 | 1990-07-03 | Instrument de musique a archet en composite |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0433430A1 true EP0433430A1 (fr) | 1991-06-26 |
EP0433430B1 EP0433430B1 (fr) | 1995-11-02 |
Family
ID=9383503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90910767A Expired - Lifetime EP0433430B1 (fr) | 1989-07-05 | 1990-07-03 | Instrument de musique a archet en materiau composite |
Country Status (8)
Country | Link |
---|---|
US (1) | US5171926A (fr) |
EP (1) | EP0433430B1 (fr) |
JP (1) | JPH0786749B2 (fr) |
AT (1) | ATE129826T1 (fr) |
DE (1) | DE69023318T2 (fr) |
ES (1) | ES2081371T3 (fr) |
FR (1) | FR2649525B1 (fr) |
WO (1) | WO1991000589A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1182642A2 (fr) * | 2000-08-23 | 2002-02-27 | Martin Schleske | Structure composite avec des fibres pour une table d'harmonie |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5333527A (en) * | 1991-08-26 | 1994-08-02 | Richard Janes | Compression molded composite guitar soundboard |
DE4313851C2 (de) * | 1993-04-28 | 1997-01-16 | Harry Hartmann | Musikinstrument mit einem Resonanzkörper |
US5895872A (en) * | 1996-08-22 | 1999-04-20 | Chase; Douglas S. | Composite structure for a stringed instrument |
US6284957B1 (en) | 1997-06-12 | 2001-09-04 | Luis G. Leguia | Carbon fiber cello |
US6060650A (en) | 1998-01-09 | 2000-05-09 | Mathew McPherson | Arrangement of a sound hole and construction of a sound board in an acoustic guitar |
US6294718B1 (en) | 2000-05-19 | 2001-09-25 | Kaman Music Corporation | Stringed musical instrument top member |
US6372970B1 (en) | 2000-05-19 | 2002-04-16 | Kaman Music Corporation | Stringed musical instrument body and neck assembly |
US6943283B2 (en) * | 2001-12-12 | 2005-09-13 | Mcpherson Mathew | Bracing system for stringed instrument |
US6703545B2 (en) * | 2002-05-22 | 2004-03-09 | Mcferson Mathew A. | Violin |
US6897366B2 (en) * | 2002-11-26 | 2005-05-24 | Mathew A. McPherson | Neck connection for stringed musical instrument |
DE102004041010A1 (de) * | 2004-08-24 | 2006-03-02 | Martin Schleske | Resonanzplatte in Faserverbund-Bauweise für akustische Saiteninstrumente |
DE102004041011A1 (de) | 2004-08-24 | 2006-03-02 | Martin Schleske | Resonanzplatte in Faserverbund-Bauweise für akustische Musikinstrumente |
US20070084335A1 (en) * | 2005-10-14 | 2007-04-19 | Silzel John W | Musical instrument with bone conduction monitor |
US20080202309A1 (en) * | 2007-02-22 | 2008-08-28 | Wiswell John R | Musical instrument and method of construction therefor |
ITFI20110028U1 (it) | 2011-05-05 | 2012-11-06 | Hiroshi Kugo | Accessori per strumenti musicali ad arco |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3699836A (en) * | 1970-09-09 | 1972-10-24 | Leon Glasser | Stringed musical instrument |
US4364990A (en) * | 1975-03-31 | 1982-12-21 | The University Of South Carolina | Construction material for stringed musical instruments |
US4408516A (en) * | 1981-08-24 | 1983-10-11 | John Leonard K | Graphite fibre violin |
GB2202072B (en) * | 1987-03-07 | 1991-04-03 | Joseph Harold Stephens | Improvements in or relating to violins |
-
1989
- 1989-07-05 FR FR8909048A patent/FR2649525B1/fr not_active Expired - Fee Related
-
1990
- 1990-07-03 JP JP2510016A patent/JPH0786749B2/ja not_active Expired - Lifetime
- 1990-07-03 DE DE69023318T patent/DE69023318T2/de not_active Expired - Fee Related
- 1990-07-03 AT AT90910767T patent/ATE129826T1/de not_active IP Right Cessation
- 1990-07-03 ES ES90910767T patent/ES2081371T3/es not_active Expired - Lifetime
- 1990-07-03 EP EP90910767A patent/EP0433430B1/fr not_active Expired - Lifetime
- 1990-07-03 US US07/651,358 patent/US5171926A/en not_active Expired - Fee Related
- 1990-07-03 WO PCT/FR1990/000501 patent/WO1991000589A1/fr active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9100589A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1182642A2 (fr) * | 2000-08-23 | 2002-02-27 | Martin Schleske | Structure composite avec des fibres pour une table d'harmonie |
US6610915B2 (en) | 2000-08-23 | 2003-08-26 | Martin Schleske | Soundboard of composite fibre material construction |
EP1182642A3 (fr) * | 2000-08-23 | 2003-11-26 | Martin Schleske | Structure composite avec des fibres pour une table d'harmonie |
Also Published As
Publication number | Publication date |
---|---|
EP0433430B1 (fr) | 1995-11-02 |
FR2649525A1 (fr) | 1991-01-11 |
FR2649525B1 (fr) | 1991-10-11 |
JPH0786749B2 (ja) | 1995-09-20 |
ATE129826T1 (de) | 1995-11-15 |
JPH03502502A (ja) | 1991-06-06 |
US5171926A (en) | 1992-12-15 |
DE69023318T2 (de) | 1996-06-27 |
ES2081371T3 (es) | 1996-03-01 |
WO1991000589A1 (fr) | 1991-01-10 |
DE69023318D1 (de) | 1995-12-07 |
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