EP1630786A1 - Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes - Google Patents

Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes Download PDF

Info

Publication number
EP1630786A1
EP1630786A1 EP05007785A EP05007785A EP1630786A1 EP 1630786 A1 EP1630786 A1 EP 1630786A1 EP 05007785 A EP05007785 A EP 05007785A EP 05007785 A EP05007785 A EP 05007785A EP 1630786 A1 EP1630786 A1 EP 1630786A1
Authority
EP
European Patent Office
Prior art keywords
core plate
plate
strip
central zone
compressive strength
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
Application number
EP05007785A
Other languages
German (de)
English (en)
Other versions
EP1630786B1 (fr
Inventor
Martin Schleske
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1630786A1 publication Critical patent/EP1630786A1/fr
Application granted granted Critical
Publication of EP1630786B1 publication Critical patent/EP1630786B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • G10D3/02—Resonating means, horns or diaphragms
    • 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 invention relates to a resonator plate in fiber composite construction for acoustic stringed instruments, in particular for use as at least one of the two resonant plates of the resonator of stringed instruments, consisting of a core plate and provided on at least one of the two outer sides of the core plate fiber coating of long fibers in a carrier material embedded, wherein the Kemplatte has a lower average density than the fiber coating.
  • Structures in fiber composite construction generally consist of long fibers which are oriented in certain directions, and a carrier material, which is usually a thermosetting or thermoplastic plastic, in particular an epoxy resin system.
  • US Pat. No. 4,353,862 A shows a guitar resonance panel in which a glass fiber fabric impregnated with polyester resin is applied to a layer of wood.
  • the weft threads of the glass fiber fabric run approximately parallel and the warp threads of the glass fiber fabric approximately transversely to the grain of the wood layer.
  • EP 0 433 430 A relates to the resonator plate of a stringed instrument in which a number of layers are superimposed, each consisting of long fibers embedded in a substrate.
  • the long fibers run parallel to one another in each layer, while the fiber directions of the individual layers deviate from one another.
  • the top and bottom cover layers of this resonator plate are made of wood to reduce the overall density of the resonator plate and achieve the desired damping characteristics.
  • the subject of EP 1 182 642 A is furthermore a three-layered resonance plate, in which the middle layer forms a lower density template, while the two outer layers have a fiber coating of long fibers embedded in a carrier material.
  • the fiber coating is single-layered and at the same time designed to be multidirectional.
  • this resonance plate is stiffened by a correspondingly selected orientation of the multidirectional fiber coating of the central part of the resonance plate in the transverse direction.
  • DE 201 13 495 U1 discloses a resonant plate in fiber composite construction, in which the template has recesses for reducing the oscillating mass in the region of the two lower and upper jaws.
  • the invention has for its object to further develop a resonant plate of the type mentioned that on the one hand compared to excellent, manufactured in traditional construction solid wood resonance panels a significantly improved acoustic quality, especially while maintaining the usual and desirable timbre of a solid wood Resonant plate has a much higher sound power, but on the other hand, in comparison to known resonance panels in fiber composite construction characterized by a particularly pressure-stable construction - at the same time simple production.
  • a resonant plate of the type mentioned in that a the two end portions of the central zone of the core plate enclosing part of the Kemplatte has a longitudinal compressive strength which is greater than the longitudinal compressive strength of the rest of the Kemplatte, in particular the two side of the middle zone adjoining outer zones of the core plate.
  • the resonance plate only that part of the resonance plate is amplified, which is particularly stressed by the string tension.
  • This part of the core plate is reinforced in such a way that here compared to the rest Areas of the core plate is given significantly increased longitudinal compressive strength. This makes it possible using the lowest possible additional mass to achieve the required stability of the resonance plate, in particular an absolute security against the described risk of buckling.
  • the use of a very small additional mass for the longitudinal reinforcement of the core plate is crucial for achieving a high sound emission, since the vibration level of the natural oscillations relevant for the sound radiation of the instrument is the higher, the smaller the oscillating mass of the resonance plate.
  • the solution according to the invention with the longitudinal reinforcement of the two end regions of the core plate is characterized by a significantly lower mass and thus a significantly higher sound radiation out.
  • the increase in the compressive strength of the stressed by the string tension part of the core plate can according to the invention be carried out in different variants, which are the subject of claims 2 to 7 and are explained in detail with reference to FIGS. 2a, 2b and 3a to 3c.
  • timbre is essentially determined by the frequencies and vibration modes of the natural vibrations, which in turn depend on the anisotropy of the sound velocity of the longitudinal waves (in spruce wood, the ratio of sound velocity in the longitudinal direction to sound velocity in the transverse direction of the fiber is approximately 4: 1).
  • anisotropy the ratio of sound velocity in the longitudinal direction to sound velocity in the transverse direction of the fiber is approximately 4: 1.
  • the middle zone of the core plate consists of a strip 2 of a material of high compressive strength, preferably of spruce wood.
  • two outer, large-area strips 3 adjoin the side, which consist of a material of low density and correspondingly low compressive strength, preferably on balsa wood or hard foam.
  • the strip 2 which is arranged symmetrically to the vertical longitudinal center plane of the resonance plate, occupies a width of 10 to 25%, preferably 14 to 20%, of the overall width of the outline of the resonance plate.
  • the two end regions 14, 15 of the central zone of the resonance plate receive a longitudinal compressive strength which is increased in comparison with the two lateral strips 3, so that the resonance plate can reliably absorb the longitudinal compressive forces F, -F caused by the string tension and buckling of the resonance plate (as described with reference to FIG. 1b) is excluded with certainty.
  • This considerable increase in the pressure and buckling strength of the resonance plate is achieved with a reasonably small increase in the oscillating mass of the resonance plate.
  • FIGS. 3a to 3c show three variants of the embodiment according to FIGS. 2a and 2b:
  • the central zone of the core plate is reinforced by two segments of a compression-resistant strip 2, which are arranged at a mutual distance and preferably symmetrically to the vertical longitudinal center plane of the resonance plate.
  • the space between the two segments of the strip 2 is as well as the two outer zones filled with low density material (strip 3).
  • the core plate in the region of the central zone on a strip 2 of high longitudinal compressive strength, whose height is only a portion of the thickness d of the core plate.
  • This strip 2 is expediently shaped in such a way in the core plate that it is on all sides, i. also on the top and bottom, of low density material (strip 3) is enclosed.
  • Fig. 3c shows an embodiment in which in the middle zone of the core plate at a distance one above the other two segments of a strip 2 are provided with increased longitudinal compressive strength.
  • the overall height of these strip segments is smaller than the thickness d of the core plate.
  • the two segments of the strip 2 are preferably flush with the top or bottom of the core plate on which the fiber coatings 6 are arranged.
  • a resonant plate made in fiber composite construction has as much as possible the same anisotropy of the sound velocity of the longitudinal waves as an excellent wood resonance plate. Since this anisotropy is influenced to some extent already by the above-described inventive measures (increasing the longitudinal compressive strength in the central zone of the resonance plate), it is important to achieve the desired value of the anisotropy by an appropriate design of the two outer fiber coatings 6. Two suitable possibilities for this are shown in FIGS. 4 and 5.
  • FIG. 4 shows (in schematic, exploded illustration) a resonance plate whose middle zone has an increased longitudinal compressive strength (the measures used for this purpose, for example according to FIGS. 2a, 2b, 3a to 3c, are not shown in detail in FIG. 4).
  • the core plate is designated in Fig. 4 with 21, the two outer fiber coatings are designated 22, 23.
  • These Fiber coatings 22, 23 each contain a layer of long fibers embedded in a carrier material, which are arranged parallel to one another within the respective layer. In this case, the long fibers of the two fiber coatings 22, 23 - relative to an imaginary vertical longitudinal center plane 24 of the resonance plate - at different angles 25 and 25, in the illustrated embodiment under opposite and unequal large angles.
  • Fig. 5 illustrates a further possibility, such as a resonant plate, whose central zone has been given increased compressive strength by one of the illustrated measures, can be formed by appropriate design of the two outer fiber coatings to have the desired longitudinal velocity anisotropy of the sound waves.
  • Fig. 5 shows a surface segment of a fiber coating 6, which consists of many individual, separate, patchwork-like layers applied to the core plate zones of long fibers. Each of these zones has a unidirectional fiber profile per se. Overall, however, take the fiber longitudinal directions of all zones different angles. As a result, a multidirectional, single-layer fiber coating is achieved as a whole.
  • the resulting anisotropy of the resonance plate can be set very precisely to the desired value (also taking into account the influence of the pressure stiffening of the central zone of the resonance plate).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Stringed Musical Instruments (AREA)
EP05007785A 2004-08-24 2005-04-08 Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes Expired - Fee Related EP1630786B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004041010A DE102004041010A1 (de) 2004-08-24 2004-08-24 Resonanzplatte in Faserverbund-Bauweise für akustische Saiteninstrumente

Publications (2)

Publication Number Publication Date
EP1630786A1 true EP1630786A1 (fr) 2006-03-01
EP1630786B1 EP1630786B1 (fr) 2007-03-07

Family

ID=35058366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05007785A Expired - Fee Related EP1630786B1 (fr) 2004-08-24 2005-04-08 Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes

Country Status (3)

Country Link
US (1) US7208665B2 (fr)
EP (1) EP1630786B1 (fr)
DE (2) DE102004041010A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7276868B2 (en) * 2004-03-29 2007-10-02 Allred Iii Jimmie B Carbon-fiber laminate musical instrument sound board
US7687696B2 (en) * 2005-08-05 2010-03-30 Charles Edward Fox Tonally improved hollow body stringed instrument
US20080202309A1 (en) * 2007-02-22 2008-08-28 Wiswell John R Musical instrument and method of construction therefor
UA93064C2 (uk) * 2008-06-05 2011-01-10 Флориан Ильич Юрьев Штучний шаруватий матеріал для резонансних дек музичних інструментів
US8450587B2 (en) 2011-08-16 2013-05-28 Mcp Ip, Llc Bracing system for stringed instrument
CN103413541B (zh) * 2013-08-31 2015-12-23 连云港神鹰碳纤维自行车有限责任公司 一种碳纤维增强复合材料制作吉他的方法
US10074348B2 (en) 2013-10-16 2018-09-11 Mcp Ip, Llc Laminate faced honeycomb bracing structure for stringed instrument
JP6146258B2 (ja) * 2013-10-22 2017-06-14 ヤマハ株式会社 弦楽器用板材の製造方法
EP3134894B1 (fr) 2014-04-23 2023-02-22 Oy All-plast Ab Produit acoustique composé de matériau composite
US10657931B2 (en) 2018-03-16 2020-05-19 Fender Musical Instruments Corporation Lightweight body construction for stringed musical instruments

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150736A (en) * 1937-10-20 1939-03-14 Harry S Braman Stringed instrument body
US2674912A (en) * 1951-10-09 1954-04-13 Joseph E Petek Violin sounding board construction
US3477330A (en) * 1967-09-29 1969-11-11 Conn Ltd C G Laminated soundboard for a string instrument
DE20113495U1 (de) * 2000-08-23 2001-10-31 Schleske Martin Resonanzplatte in Faserverbund-Bauweise

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427915A (en) * 1964-08-19 1969-02-18 Melvin Mooney Acoustic panels
JPS54119910A (en) * 1978-03-10 1979-09-18 Nippon Gakki Seizo Kk Sound plate for stringed instrument such as guitar
US4353862A (en) * 1980-05-12 1982-10-12 Kaman Aerospace Corporation Method for making sound board
US4408516A (en) * 1981-08-24 1983-10-11 John Leonard K Graphite fibre violin
FR2598843B1 (fr) * 1986-05-15 1989-02-10 Centre Nat Rech Scient Structure composite pour table d'harmonie d'instruments a cordes et son procede de fabrication
DE3890284T1 (de) * 1987-03-07 1989-04-13 Joseph Harold Stephens Violinen
FR2649525B1 (fr) 1989-07-05 1991-10-11 Centre Nat Rech Scient Instrument de musique a archet en materiau composite
JPH0631942B2 (ja) * 1989-07-28 1994-04-27 ヤマハ株式会社 楽器用響板
AUPP361698A0 (en) * 1998-05-21 1998-06-11 Gondwana Musical Instrument Company Pty Ltd Stringed musical instrument
FI106485B (fi) * 2000-03-24 2001-02-15 Liikanen Musical Instr Ky Tukirakenne kielisoitinta varten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150736A (en) * 1937-10-20 1939-03-14 Harry S Braman Stringed instrument body
US2674912A (en) * 1951-10-09 1954-04-13 Joseph E Petek Violin sounding board construction
US3477330A (en) * 1967-09-29 1969-11-11 Conn Ltd C G Laminated soundboard for a string instrument
DE20113495U1 (de) * 2000-08-23 2001-10-31 Schleske Martin Resonanzplatte in Faserverbund-Bauweise

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUTCHINS, CARLEEN MALEY: "Violinen", DIE PHYSIK DER MUSIKINSTRUMENTE, 1998, Berlin Heidelberg, pages 64 - 77, XP002350087 *

Also Published As

Publication number Publication date
DE102004041010A1 (de) 2006-03-02
EP1630786B1 (fr) 2007-03-07
DE502005000447D1 (de) 2007-04-19
US20060042447A1 (en) 2006-03-02
US7208665B2 (en) 2007-04-24

Similar Documents

Publication Publication Date Title
EP1630786B1 (fr) Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes
EP1182642B1 (fr) Structure composite avec des fibres pour une table d'harmonie
DE4214336C2 (de) Tonerregendes Blatt für Blasinstrumente
DE3221219A1 (de) Klangkoerperdecke eines saiteninstrumentes
EP1630785B1 (fr) Table d'harmonie en matériau renforcé de fibres pour des instruments de musique à cordes
DE2915959C2 (fr)
DE3518032C2 (fr)
EP0697963B1 (fr) Instrument de musique comportant une table d'harmonie
EP1032739A1 (fr) Liants de colle a bois renforces par des fibres de carbones
DE2523321A1 (de) Webeschaftstab
DE102009032663A1 (de) Hochelastischer Verbundwerkstoff sowie Sportbogen aus einem hochelastischen Verbundwerkstoff
DE102019111088B4 (de) Sandwichpaneel mit angepasstem Schalldämmmaß und dessen Verwendung
EP0998738B1 (fr) Corps de resonance pour instrument a cordes
DE9400438U1 (de) Verbundplatte für äußere und innere Verkleidungen
DE19831589C2 (de) Saitenhalter
AT313130B (de) Schi aus Kunststoff
DE3427111C2 (de) Verbundaufbau
EP0612596B1 (fr) Panneau en bois naturel, panneau composé en bois naturel et procédé pour leur fabrication
DE2115119C3 (de) Resonanzkörper
DE2434423A1 (de) Schwingungsgedaempfter ski
DE2114319A1 (de) Ski
DE2204964C3 (de) Klavierresonanzboden mit profilierten Querrippen
AT520790A1 (de) Bauelement
DE2115119B2 (de) Resonanzkörper
DE9315083U1 (de) Verbund-Vlies mit eingenadelten steifen Verstärkungselementen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20060728

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): DE FR GB

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502005000447

Country of ref document: DE

Date of ref document: 20070419

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070524

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20071210

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110510

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110421

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110624

Year of fee payment: 7

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120408

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005000447

Country of ref document: DE

Effective date: 20121101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121101