EP2304712A2 - Cheville d'accord fin - Google Patents

Cheville d'accord fin

Info

Publication number
EP2304712A2
EP2304712A2 EP09780599A EP09780599A EP2304712A2 EP 2304712 A2 EP2304712 A2 EP 2304712A2 EP 09780599 A EP09780599 A EP 09780599A EP 09780599 A EP09780599 A EP 09780599A EP 2304712 A2 EP2304712 A2 EP 2304712A2
Authority
EP
European Patent Office
Prior art keywords
spindle
receiving portion
gear
tuning
tuning device
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.)
Withdrawn
Application number
EP09780599A
Other languages
German (de)
English (en)
Inventor
Adelbert Lauffer
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 EP2304712A2 publication Critical patent/EP2304712A2/fr
Withdrawn legal-status Critical Current

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
    • G10D3/14—Tuning devices, e.g. pegs, pins, friction discs or worm gears

Definitions

  • the invention relates to a tuning device for adjusting the tension of one or more strings of a stringed instrument having a swivel-receiving portion having pairs of holes for rotatably receiving voice-swirls, wherein the tuning-swirls each comprise a vertebral body having a spindle for insertion into a bore pair in the swirl-receiving portion and for winding up the end portion of a string and a swivel handle connected to the spindle for rotating the spindle about a common axis of the swivel handle and spindle, wherein outside the swirl-receiving portion there is provided functionally between the swivel handle and the spindle a gear transmitting a rotational movement of the swivel handle about the common axis to the spindle passes.
  • Such tuning devices having a gear for reducing rotational movement on the swivel handle to the spindle connected to a string are known in the art.
  • the use of a reduction gear allows a very sensitive tuning of the string.
  • the transmission can also prevent the unwanted effect of a jerky vortex rotation, which often occurs in conventional tuning devices without gear when the vortex undergoes a change from static to sliding friction at the beginning of the rotation.
  • the tuning pegs are dimensioned with reduction gear so that they can be installed in traditional stringed instruments without having to be modified, in particular without the holes in the swirl receiving section, which serve to accommodate the tuning pegs, must be increased.
  • the assembly work is greatly facilitated when conventional tools for attaching the tuning pegs can be used in the swirl receiving section. Because of these desirable properties and also for aesthetic reasons relating to the optics of the instrument, it is advantageous if the modern tuning gear with gear, which is hereinafter referred to as "fine tuning 5 vortex" corresponds in its outer dimensions in about a traditional tuning peg.
  • a tuning device which discloses a planetary gear, which is arranged outside the inserted into deno vortex receiving portion portion of the voice vortex.
  • a planetary gear which is arranged outside the inserted into deno vortex receiving portion portion of the voice vortex.
  • the tuning device should be able to be used with stringed instruments of conventional design, without them having to be significantly modified, and / or without the need for unusual tools.
  • the main advantage of this tuning device is that by using an eccentric gear larger gear elements can be used in the same space, as is possible in a planetary gear, as disclosed in DE 20 2007 001 518 U1. Due to the specific structure of a planetary gear, the diameter of the individual planetary gears, via which the force is transmitted from the vortex grip to the spindle of the fine tuning vortex, can not be greater than the distance between the teeth of the output Stimrades and the common axis of the vortex grip and spindle , In contrast, a corresponding, mounted on an eccentric, hollow pinion in an eccentric gear having an outer diameter which corresponds approximately to twice the above-mentioned distance.
  • the eccentric gear has the advantage over the planetary gear that it works with only one hollow pinion instead of multiple planet gears, so that reduces the number of parts of the transmission. This leads to reduced effort and costs in the production and assembly and also has a positive effect on the probability of failure of the transmission.
  • the eccentric gear comprises an eccentric shaft rotatable about the common axis by means of a rotary movement, a hollow pinion rotatably mounted on the eccentric shaft, a first ring gear toothing arranged non-rotatably relative to the swirl bearing section and a second ring gear toothing rotatably mounted to the spindle, wherein a first hollow pinion gear portion of the hollow pinion in meshing engagement with the first ring gear teeth and a first hollow pinion portion in the direction of the common axis adjacent second hollow pinion portion of the hollow pinion is in meshing engagement with the second ring gear.
  • the eccentric gear can be designed as stepped eccentric gear, i.
  • the eccentric gear is formed as a stepped eccentric gear, the outer teeth of the first hollow pinion portion and the outer teeth of the second hollow pinion portion may have a different number of teeth, which gives great flexibility in the choice of the appropriate reduction ratio.
  • a particularly advantageous development provides that a difference in number of teeth between the first ring gear teeth and the outer teeth of the first hollow pinion portion is equal to a difference in number of teeth between the second ring gear teeth and the outer teeth of the second hollow pinion portion.
  • This makes it possible, in contrast to an eccentric gear with the same number of teeth of the first and second hollow pinion section, to arrive at a relatively large degree of overlap for both the first gear stage defined by the first hollow gear portion and the first ring gear and the second gear stage defined by the second gear portion and the second ring gear.
  • the higher the degree of overlap of a gear stage the greater the number of teeth simultaneously engaged with each other, and the greater the transmittable force or the better the force to be transmitted can be distributed.
  • the first hollow pinion portion could have nineteen teeth, the first ring gear teeth twenty-four teeth, the second hollow pinion portion fifteen teeth, and the second ring gear teeth twenty teeth.
  • a tooth number difference between the corresponding hollow pinion portion and the corresponding ring gear toothing of five would result for both toothing stages, which leads to a relatively large degree of overlap of more than 1.4 for both toothing stages.
  • the vortex grip has a recess in which a first ring gear toothed component, and preferably also a second ring gear toothed component, at least partially received are.
  • the vertebral grip usually has a larger dimension in the radial direction, relative to the common axis, than the rest of the fine-tuning vertebrae.
  • the space available anyway in the swivel handle space for at least partially, preferably completely, accommodating the Exzentergetriebes be used.
  • the dimensions of the fine tuning vortex compared to a traditional tuning vortex, if any, so only slightly change. This has a positive effect on the overall appearance of the fine-tuning wirebis, whose form can be approximated or even maintained in the classical form.
  • the eccentric gear can be self-locking. Otherwise, other precautions to block the fine tuning vortex would be necessary, which would result in other components and thus higher costs.
  • the eccentric gear In order to produce the fine tuning vortices as inexpensively as possible, it is recommended that the eccentric gear at least partially made of plastic, in particular polyamide to form. With correspondingly high quantities, the unit costs of the gear elements can be kept very low, in particular by production by means of an injection molding process.
  • the eccentric gear may be at least partially formed from carbon fiber reinforced material, the carbon fiber fraction preferably being between 30% and 50%, more preferably about 40%. Furthermore, the reinforcement by the carbon fibers may contribute to increasing the modulus of elasticity of the parts of the fine tuning vortex such that the low material damping contributes to the excellent sonority of the stringed instrument.
  • a bearing housing which is preferably pressed into the bore of the swirl-receiving section is arranged non-rotatably relative to the swirl-receiving section, or / and that on the side facing away from the swirl-grip the swirl-receiving portion between the spindle and the vortex receiving portion is inserted into the bore of the swirl receiving portion, preferably pressed, sleeve rotatably disposed to the swirl receiving portion, wherein the spindle is rotatably mounted in the bearing housing and / or the sleeve about the common axis of rotation with the swirl handle.
  • the bearing of the spindle is independent of the material used for the Wirbelageabites, which ensures a constant friction between the spindle and the bearing housing and / or the socket and thus a largely independent of changing environmental conditions such as temperature and humidity movement when tuning.
  • the vortex boxes of traditional stringed instruments have holes for receiving the bearing housings for tuning pegs which, when new, have a diameter of about 12.5 mm on the side from which the tuning peg is inserted, and tend to be light tapered conically. Due to the fact that the material surrounding the holes, mostly wood, is subject to mechanical and other stresses, this diameter can increase over time. As a rule, an additional bush is inserted into the bore from a diameter of 14.5 mm. In addition, the whirl-receiving section tapers from the body of the stringed instrument toward the worm.
  • the fine-tuning vane according to the invention may be usable for the mentioned diameter of the bores and their intermediate area.
  • This can be achieved in an advantageous manner in that the bearing housing or / and the socket in the insertion direction of the tuning peg into the bore pair of the swirl receiving portion, preferably conical, taper, wherein the outer diameter of the bearing housing is between about 12.5 mm and about 14.5 mm.
  • the fine tuning vortices can thus be pushed more or less deep depending on the diameter of the bore.
  • the sleeve and the spindle of the fine tuning vortex are dimensioned in the direction of insertion of the vocal vertebra in the bore pairs of the swirl receiving portion such that they project beyond the vortex receiving portion on the side facing away from the vertebral grip portion.
  • a "standard fine tuning vane" is long enough both for insertion into a bore with a diameter of about 12.5 mm and in a bore with a diameter of about 14.5 mm
  • Spindle and bushing may protrude too far out of the swirl-receiving section, which could be cut to length if necessary, for example, if both are made of plastic be reduced.
  • the component having the first ring gear is connected in a rotationally fixed manner to the bearing housing by means of a snap closure and / or by means of an adhesive bond.
  • the hook and hook elements required for a snap closure can be formed very well integrally with injection-molded parts.
  • the fine tuning vortex invention can be used in any known type of stringed instrument, so for example in stringed instruments such as violin, viola, cello or the like, or plucked instruments such as guitar, zither, harp or the like or in different type of stringed instruments, such as dulcimer or the like, just to name a few examples.
  • stringed instruments such as violin, viola, cello or the like
  • plucked instruments such as guitar, zither, harp or the like
  • different type of stringed instruments such as dulcimer or the like
  • FIG. 1 shows a schematic side view of a swirl receiving section with only one tuning device according to the invention
  • Fig. 2 is a schematic plan view of the vortex receiving portion of Fig. 1;
  • Fig. 3 is taken along the line HI-III in Fig. 1 taken sectional view of the vortex receiving portion shown in Fig. 1.
  • the schematic side view of Fig. 1 and the schematic plan view of Fig. 2 show a vortex receiving portion 10 of a stringed instrument.
  • the whirl-receiving portion 10 is the pegbox of a stringed instrument, such as a violin.
  • the invention can also be used to advantage in other types of stringed instruments whose whirl-receiving portion is not referred to as a pegbox.
  • the vortex receiving portion 10 includes a plurality of pairs of holes 12, 14, wherein in one of the pairs of holes 12, 14 an inventive tuning peg 20 is arranged by way of example.
  • the tuning peg 20 includes a peg handle 22, which in this embodiment is provided with finger wings 24 for better gripping. Via the swivel handle 22, the spindle 26 arranged on a common axis a with the swivel handle 22 can be rotated. In the spindle 26, a winding hole 28 is inserted, through which a string, not shown, of the stringed instrument can be introduced to be tuned via the tuning device.
  • Fig. 3 shows the embodiment of the tuning device according to the invention for adjusting the tension of one or more strings in a stringed instrument in a section along the line Ill-Ill of Fig. 1 in an enlarged view.
  • Both bores of the bore pair 12, 14 are formed in the swirl receiving portion 10 such that they taper conically in the insertion direction E of the vocal vertebra 20.
  • a socket 30 which likewise tapers in the insertion direction E of the vocal cogwheel 20 is introduced into the bore 14 facing away from the vertebral grip 22 and fixed there, in particular rotationally fixed, to the vertebral receiving section 10.
  • a bearing housing 32 which tapers in the direction of insertion E of the tuning peg 20, is also inserted into the bore 12 facing the swirl grip 22, where it is fixed, in particular non-rotatable, to the vertebral receiving section 10.
  • Bushing 30 and bearing housing 32 support the spindle 26 of the tuning peg 20 rotatable to the pawl receiving portion 10th
  • a component 34 which has a first internal gear toothing 36, is attached to the bearing housing 32 in a fixed, in particular non-rotatable manner.
  • the attachment can, as shown for this embodiment, carried out by snap closures, not shown here at the points S, which can be added if desired by gluing the two components 32, 34.
  • the hollow pinion 40 is rotatably mounted on an eccentric shaft 46.
  • a first pin 48 at the one end of the eccentric shaft 46 is fixed, in particular rotationally fixed, connected to the vertebral handle 22.
  • the first pin 48 of the eccentric shaft 46 in a recess of the Vortex grip 22 inserted and connected, for example by means of a spline connection and / or an adhesive connection with the vertebrae grip 22.
  • a second pin 50 at an end opposite to the first pin end of the eccentric shaft 46 is rotatably mounted in a recess of the spindle 26.
  • the axes of the two pins 48, 50 of the eccentric shaft 46 are preferably arranged on the common axis a.
  • the hollow pinion 40 may have a second hollow pinion section 42 adjacent to the first hollow pinion section 44 in the insertion direction E of the tuning vortex 20, which, like the first hollow pinion section 44, is likewise provided with external toothing. However, both the diameter and number of teeth of the second hollow pinion section 42 are smaller than those of the first hollow pinion section 44.
  • the external toothing of the second hollow pinion section 42 is in meshing engagement with a second ring gear toothing 52, which is preferably integrally formed with the spindle 26.
  • the reduction is 1:19, which means that the swivel handle 22 must be rotated nineteen times to rotate the spindle 26 once.
  • the force transmitting and the translation effecting hollow pinion 40 thanks to the inventive design of the tuning device, designed sufficiently large to ensure a long life of Feinstimmwirbels.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)

Abstract

La présente invention concerne un dispositif d'accord destiné à régler la tension d'une ou de plusieurs cordes d'un instrument à cordes comprenant un cheviller (10) qui présente des paires de trous (12, 14) destinées à prendre en charge des chevilles d'accord (20) en leur permettant de tourner. Selon l'invention, les chevilles d'accord (20) comprennent respectivement un corps de cheville comprenant une tige (26) qui est insérée dans une paire de trous (12, 14) du cheviller (10) et sur laquelle est enroulée la section d'extrémité d'une corde, et une partie de préhension (22) qui est reliée à la tige (26) et sert à faire tourner la tige (26) sur un axe (a) commun à la partie de préhension (22) et à la tige (26) de la cheville. Un engrenage (33) est disposé à l'extérieur du cheviller (10) de manière fonctionnelle entre la partie de préhension (22) et la tige (26) de la cheville, ledit engrenage transmettant un mouvement de rotation de la partie de préhension (22) autour de l'axe (a) commun, de façon démultipliée à la tige (26), l'engrenage (33) étant un engrenage excentrique.
EP09780599A 2008-07-15 2009-07-15 Cheville d'accord fin Withdrawn EP2304712A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008033190A DE102008033190A1 (de) 2008-07-15 2008-07-15 Feinstimmwirbel
PCT/EP2009/059025 WO2010007080A2 (fr) 2008-07-15 2009-07-15 Cheville d'accord fin

Publications (1)

Publication Number Publication Date
EP2304712A2 true EP2304712A2 (fr) 2011-04-06

Family

ID=41427118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09780599A Withdrawn EP2304712A2 (fr) 2008-07-15 2009-07-15 Cheville d'accord fin

Country Status (4)

Country Link
US (1) US20110162507A1 (fr)
EP (1) EP2304712A2 (fr)
DE (1) DE102008033190A1 (fr)
WO (1) WO2010007080A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102903354A (zh) * 2012-09-18 2013-01-30 成都新海星文化传播有限公司 一种琴弦微调装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20110028U1 (it) * 2011-05-05 2012-11-06 Hiroshi Kugo Accessori per strumenti musicali ad arco
CN104217708A (zh) * 2014-09-12 2014-12-17 余李方 一种琴弦微调机构
CN108320726B (zh) * 2017-01-17 2023-07-04 鲁璐 一种箜篌转调变音器和应用该转调变音器的箜篌
WO2020087168A1 (fr) * 2018-10-31 2020-05-07 Dunwoodie, David Machine de réglage pour instruments à cordes
EE01516U1 (et) * 2019-02-20 2020-11-16 Gabriel Passov Keelpillivirbel

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US1422738A (en) * 1921-08-29 1922-07-11 Caspari Karl Tensioning peg for stringed instruments
US1506373A (en) * 1924-07-03 1924-08-26 H A Weymann & Son Inc Tuning peg for musical instruments
US1832379A (en) * 1928-09-13 1931-11-17 Gilbert Otto Peg for string musical instruments
US1802937A (en) * 1929-02-11 1931-04-28 A D Grover & Son Inc Internal-geared tuning peg
US2303365A (en) * 1939-11-14 1942-12-01 Karlsen Karl Henry Clock mechanism
US3726172A (en) * 1971-07-12 1973-04-10 M Sorkin String tensioning device
US4026182A (en) * 1976-04-15 1977-05-31 Gilbrech Donald A Tuning peg
DE3828548A1 (de) * 1988-08-23 1990-03-08 Burger Hans Joachim Feinstimmwirbel
US5767427A (en) * 1996-05-20 1998-06-16 Corso; Steve Fine tuner device for stringed instruments
US5998713A (en) * 1998-02-12 1999-12-07 Herin; John C Tuning peg
SE513311C2 (sv) * 1998-12-29 2000-08-21 Gustav Rennerfelt Excenterväxel
JP2002073011A (ja) * 2000-09-05 2002-03-12 Goto Gut Kk ウクレレ用糸巻き具
US20050159528A1 (en) * 2002-08-09 2005-07-21 C/O Koyo Seiko Co., Ltd., Resin gear
DE20303120U1 (de) * 2003-02-25 2003-05-15 Willich, Georg, Dr., 88090 Immenstaad Feinstimmwirbel für Saiteninstrumente
US8137370B2 (en) * 2005-11-02 2012-03-20 Stryker Corporation Powered surgical handpiece with improved latch mechanism and rotary to oscillating output drive
DE102006007970A1 (de) * 2006-02-15 2007-08-23 Rudolf Wittner Gmbh & Co. Kg Wirbelelement
DE202007001518U1 (de) 2007-02-02 2007-03-29 Lauffer, Adelbert Wirbel-Feinstimmer
US7641579B2 (en) * 2007-04-19 2010-01-05 Junkers John K Eccentric gear mechanism and method of transfering turning force thereby
DE102007054312B4 (de) * 2007-11-05 2019-08-29 Wittner Gmbh & Co.Kg Feinstimmwirbel

Non-Patent Citations (1)

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Title
See references of WO2010007080A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102903354A (zh) * 2012-09-18 2013-01-30 成都新海星文化传播有限公司 一种琴弦微调装置

Also Published As

Publication number Publication date
WO2010007080A3 (fr) 2010-08-05
DE102008033190A1 (de) 2010-01-21
WO2010007080A2 (fr) 2010-01-21
US20110162507A1 (en) 2011-07-07

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