WO1980001013A1

WO1980001013A1 - String tension adjustment apparatus for stringed musical instrument

Info

Publication number: WO1980001013A1
Application number: PCT/JP1978/000016
Authority: WO
Inventors: S Ogata
Original assignee: S Ogata
Priority date: 1978-10-31
Filing date: 1978-10-31
Publication date: 1980-05-15
Also published as: DE2857647A1; DE2857647C1

Abstract

String tension adjustment apparatus lightening the string adjustment burden of stringed musical instrument. Stringed musical instruments, in prior art, were necessary for loosing all strings in unused state and for tuning each of all strings wherever players used them, and this was quite a burden for the players. This invention is provided with an apparatus to loosen all strings together with a single operation after the first string adjustment and also to loosen the tightened strings in used state at the same time. The invention contains a movable stand (4), capable of reciprocal motion, installing string winding attachment (5) at a head (10) of the stringed instrument, and is constructed to loosen all of the tightened strings and to tighten the strings into the original state by forcing to move said movable stand (4) by means of reciprocal motion means (6). This invention also contains a string loosing-proof means by fixing surely string end to string post (50), a means making tuning strings visually and a means maintaining the tightened state of strings, added to the string adjustment apparatus of the present invention, so that good performance of the apparatus is further promoted. This invention can be applied to the stringed instrument sounding by use of strings, such as double bass, violin, violoncello, etc.

Description

Akira and others

Glue String tuning device for stringed instruments

Technology.

The present invention provides a guitar, violin, or other stringed musical instrument having a string as a sounding body, loosening all tuned strings at once, and returning to the original tuned tension state at a later date. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuning apparatus, and more particularly to a mechanism for securely fastening a string to a string winding mechanism, a mechanism for reading the degree of string tension, and a mechanism for maintaining the tension of all strings. . Background technology "

All strings in a stringed instrument are stretched on the body with considerable tension. Or, there are various adverse effects such as promoting deformation and breakage of the members supporting the string tension. Therefore, it is desirable to loosen all the strings after the performance, but once the strings are loosened, it is necessary to tighten all the strings one by one each time the performance is performed and tune the strings using a tuning flute etc. . This tuning work is quite time-consuming, especially for beginners. Disclosure of the invention According to the present invention, the head (αο) of the stringed musical instrument is provided with a free-moving member (4) reciprocating in the direction in which the strings are stretched, and the string winding mechanism (5) on each string is placed on the moving member (4). After the tuning, the moving string (4) is reciprocally operated, and all strings are simultaneously relaxed. As a result, it is possible to simultaneously return to the original tuned tension state, thereby eliminating the need for the tuning work conventionally performed each time the performance is performed, greatly reducing the burden on the player ^; '

Further, according to the present invention, a stop (15) is attached to each string end, and the stop (19) is locked to a locking portion (55) formed in a string insertion hole (54) of a string winding shaft (50). Since the string ends are securely fastened to the winding shaft (50), tuning is required by completely preventing the slippage and detachment of the string that can occur with the conventional winding shaft (50). This is done so as to reduce the chances of performing the method and prevent the effects of the present invention from being reduced.

Further, the present invention provides a display unit (7) for indicating the transition process of the moving condition (4) on a scale, and displaces the display body (70) with the transition of the moving condition (4). What was tuned while listening to sound can be visually tuned by looking at the display (7), thereby simplifying and speeding up the tuning work. Improves accuracy.

Furthermore, the present invention completely prevents all the strings from loosening at the same time by adding a regulating means ^ for regulating the displacement of the movement (4) due to the pulling force of the strings, Further improving the performance of the equipment

OMPI

WIPO,, ¾ΝΑΤί ¾ Brief description of the drawings

Fig. 1 is a perspective view of a fork guitar in which the tuning apparatus according to the present invention is implemented,-Fig. 2 is a partially cutaway front view showing the structure of the head, and Fig. 3 is a bottom view. Structural illustration of the head seen from the bottom,

Fig. 4 is a partially cut-away perspective view showing the fixed state of the string to the winding shaft.

FIG. 5 is a perspective view of another embodiment showing a state in which the string is fixed to the winding shaft, in which the section is cut off.

FIG. 6 is a perspective view showing a connection structure between a string end and a stop, FIG. 7 is an explanatory view showing a structure of a display unit,

Fig. 8 is a partially cutaway front view showing the structure of a head in which the present invention has been practiced in a straight line.- Fig. 9 is a structural explanatory view of the head viewed from below.

Fig. 10 is a partially cutaway perspective view showing the fixed state of the string on the winding shaft.

FIG. 11 is a partially cutaway front view showing a head of another embodiment in which the present invention is applied to a fork guitar.

Fig. 12 is a structural explanatory view of the head including another booster mechanism viewed from the bottom, and Fig. 13 is a cross-sectional view showing the structure of the holding mechanism inserted into the head.

OMPI

Λ, W1PO FIG. 1 is a plan view of a preferred embodiment of the present invention.

The present invention relates to a stringed musical instrument having a string as a sounding body, for example, a plucked string instrument that plays a string by playing a string, such as a guitar, a mandolin, a nope, a double base, a violin, and a viola. The present invention can be applied to various stringed instruments such as a bowed stringed instrument in which a string is rubbed and sounded like a cello. . ⁵

The drawings show an embodiment in which the present invention is implemented in a guitar. In the following, the present invention will be specifically described based on the drawings, particularly in an embodiment in which the present invention is implemented in a fork guitar and a gut guitar.

FIGS. 1 to 3 show a fork guitar in which a tuning mechanism according to the present invention is applied to a head base (2) integrally formed with a body (1). . The body (1) is composed of a body (12) and a neck (13) protruding in the longitudinal direction of the body (12). The body (13) is connected to a stop plate (14) fixed to the upper surface of the body (13). One end of the string 01) of the book is fastened, and the other end of each string ail is wound around a string winding mechanism (5) provided on the head αα) of the neck (13). (1) Six strings (11) are stretched upward. The head (10) 'is superimposed on the base (2) projecting from the end of the neck (13) and the lower surface of the base (2), and is screwed to the base (2) at the proper position. The fixed joint (3) has a movable joint (4) supported on the lower surface of the fixed joint (3) so as to reciprocate in the direction in which the strings (11) are stretched. . The lower surface of the grave joint (2) is provided with recesses (21) penetrating the base (2) at three locations each symmetrical on both sides, and the winding mechanism of each recess (each string 01 into 21T) ( 5) house. The fixed joint (3) has a front wall (31) facing down at the front end of the horizontal board (30), side walls (32) and (32), and a movable joint (4) on the lower surface of the rear end. Projecting support flanges (33) and (33) that slidably support the end of (). The horizontal board (30) is provided with through holes (34) at positions corresponding to the recesses (21) of the base (2), and the strings (11) are inserted into the recesses (21) through the through holes (34). Protrude the string winding mechanism (5).

The movable joint (4) is a metal body, and the winding mechanism (5) of each string (11) is positioned corresponding to the through hole (3) of the fixed joint (3).

The winding mechanism (5) is composed of a winding shaft (50) and an operating shaft (51) connected to each other by a worm (52). By rotating the winding shaft m, the string end is wound around the tip of the winding shaft (50). In the fork guitar, the winding axis W is vertically supported on the moving joint (4) and the upper end is projected upward on the base (2), and the operating shaft (51) is moved in the moving joint (4) '. The lever is horizontally supported on the lower surface, and the knob (53) is protruded toward the side wall of the moving case (4).

Since the movable joint (4) can reciprocate with respect to the fixed joint (3), the concave portion (21) provided in the base joint (2) and the through-hole (34) opened in the fixed joint (3). It is desirable to form the coil into a long shape that allows reciprocation of the winding mechanism (5).

Fig. 4 and Fig. 5 show a structure that completely prevents the slippage and slippage of the strings that tend to occur with the conventional winding shaft. In the example shown The winding shaft (50) has a string insertion hole (直径) penetrating in the diameter direction, and the insertion hole (54) has a locking portion (55) with one opening enlarged and a winding shaft (54). A string engagement groove (56) cut into the end face of (50) and connected to the insertion hole (54) is provided. The end of the string 01) is engaged in the insertion hole (54) through the engagement groove (56), and a stop (15) is attached to the end of the string, and the stop (15) is engaged with the locking portion ( 55) and fasten the string to the winding shaft (50) and wind it around the shaft o

The stop (15) has a tapered conical or pyramid shape, and when formed of a synthetic resin material, is embedded in the stop (15) with its chord end bent in a U-shape. The string (I and the stop (15) are connected by inserting.

The embodiment shown in FIG. 6 shows an example in which the stop (15) is made of metal—a cut groove (16) (16) that is axially wavy in both sides of the stop (15). The end of the string (11) is engaged in the groove (16), and the stopper (15) is narrowly pressed to close the groove opening to secure the string end. The locking portion (55) formed on the helical winding shaft 150) has, of course, a hole shape corresponding to the shape of the stopper (15). Further, the shape of the stop (15) is not limited to the conical shape shown in FIG. 4 or the pyramid shape shown in FIG. -A reciprocating mechanism (6) for forcibly shifting the moving table (4) is provided between the fixed joint (3) and the moving table (4). The reciprocating machine (6) has a sleeve (35) with a threaded inner surface protruding from the front wall (31) of the fixed base (3). Operation with handle (60) at base end

-BUREA U

OMPI The operating shaft (61) is screwed in, and the leading end of the operating shaft (61) protruding into the front wall (31) is moved via the booster mechanism (8) and the connecting piece (41). The movable platform (4) is reciprocated by rotating the handle (willow) connected to the end of the movable base. In the present embodiment, a booster mechanism (8) using a roller shaft (81) is adopted, and the base end of the roller shaft (81) is pivotally mounted on one side wall (3) on the inner surface. Then, the operation shaft (61) is engaged with the groove opening (82) provided at the tip of the roller shaft (81), and the support member (81) with the roller glaze (81) attached to the tip of the operation shaft (61) 63) and reciprocate with the operating shaft (61) In the example shown, a ball bearing is used for the support member (63), and the operating shaft (61) is the inner race of the bearing. (64), and the armature shaft (81) is supported by the outer race (65), and only the inner race (64) is rotated integrally with the operating shaft (61) '. A connecting piece (83) is protruded from a substantially central portion of the length of the lever shaft (81), and a connecting piece protruding from the connecting piece (83) and the movable joint (4)). And the external force applied to the tip of the lever shaft (81) is almost doubled by leverage to connect It acts on the piece (41).

FIG. 12 shows an embodiment in which a booster mechanism using a pair of reduction gears (84) and (85) is added to the booster mechanism (8) based on the lever shaft (81). In the illustrated example, the operating shaft (61) provided with the handle W is supported on a front wall (31) of the fixed joint (3) by a bearing cylinder (36) protruding from the center portion, and ) Is mounted on the shaft end protruding inward, and the screw shaft (86) is screwed into the screw sleeve (37) protruding from the side of the front wall (31). , The center of the screw shaft (86) projecting into the front wall (31) A driven gear (85) having a diameter larger than that of the driving gear is attached to the gear, and the two gears (84) and (85) are connected to each other. Therefore, the rotation force of the handle (60) is increased according to the gear ratio of the two gears (84) and (85) and transmitted to the screw shaft 更に, and further utilizes the lever shaft (81). Acts on the transfer (4) via the booster mechanism (8). The driven gear (85) is mounted on the screw shaft ^ by a pin (87), and the reciprocation of the screw shaft (86) is performed by an elongated hole (88) passing through the pin (87). Allowed.

The device of the present invention includes a display section (7) for indicating the movement distance of the movement (4), in other words, the degree of tension of the string (11) by a scale. The display unit (7) can perform various modes, but in this embodiment, as shown in FIG. 7, an appropriate string (αΐ) is attached to the upper surface of the display plate mounted on the head base. Use a scale with an indication scale (Α) indicating the tension state and an indication scale (弦) indicating the relaxed state of the appropriate string αΐ). The display section (7) has a display body (70) that is displaced with the transition of the movement (4). The display (70) has an operating shaft (73) protruding from the upper surface of the movable plate (4), and the upper end of the operating shaft (73) is protruded above the base (2). ) Is reciprocally engaged into the guide groove ^ established at the edge of). On the other hand, a pivot ^ equipped with a pointer (72) is pivotally supported on the display plate (71), and a reciprocating motion of the operating shaft (73) is transmitted to the transmission member (76) protruding from the pivot (75). The pointer can be shaken by converting it into rotary motion.

A spring (77) is mounted on the pivot (75), and the spring always biases the transmission member t-6) to the operating shaft 3).

BU EA

C: PI FIG. 13 shows the restricting means (^) added to the reciprocating mechanism (6), and the movement (4) is applied to the neck (13) by the pulling force of the whole string (11). ) Side.

In the illustrated example, the operation handle (60) of the reciprocating mechanism (6) is provided with a restricting means for restricting reverse rotation, but in addition, the movement (4) is fixed (3). Various modes can be adopted, such as providing a mechanism that directly locks the lock. In the illustrated example, an L-shaped mounting member (91) is fixed to the outer surface of the front wall (31) of the fixing base (3) directly below the operating shaft (51), and is held by the mounting member (91). ) Is screwed into the screw shaft (93), and the pressing member (94) is pivotally supported. The rotating operation of the screw shaft (93) causes the pressing member (94) to face downward (by biasing the pressing member (94) downward). Then, the pressing surface (95) at the tip is pressed against the inner surface of the flange portion (62) of the operation handle (60) to prevent the return rotation of the handle (60). By setting a large coefficient of friction between the flange (62) and the pressing member (9), for example, by making a number of notches on the inner surface of the flange (62), Power is greatly improved.

Although the embodiment in which the present invention is implemented in the fork guitar has been described above, the above configuration can be applied to the gut guitar as it is.

FIG. 8 shows an embodiment in which the present invention is applied to a gutter guitar. The head base (2) integrally formed with the neck (13) has a lower chord (11) It has a recessed part © large enough to accommodate the string winding mechanism (5), and the recessed part (22) has two rows of elongated holes (23) penetrating the bottom wall. In addition to the opening of (23), elongated through-holes (38) and (38) are also opened at the position corresponding to the elongated hole (24) in the fixing (3). The winding mechanism (5) disposed on the movable plate (4) is located in the concave portion (22), and the winding shaft (50) faces horizontally to the elongated hole (23). The operation shaft (51), which is supported by a shaft and connected via an arm (52), has a knob (53) protruding downward and below the moving plate (4). At 50), as shown in Fig. 10, the insertion hole (54) of the chord (11) is opened in the radial direction 1. The insertion hole ¾ is one; A locking portion (55) and a string winding shaft (a string engaging groove 66 formed by cutting the circumferential surface of ¾ along the diameter line and communicating with the insertion hole (54)). Insert the end of the string (11) into the hole (54) through the groove (56), attach the stop (15) to the end of the string, and attach the stop (15) to the locking part (55). Engage and fasten the end of the string 01) to # 5 · wound shaft (50) and wind it around the circumference of the wound shaft 50).

The structure of the reciprocating mechanism (6), the display section (7), and the like are common to the fork guitar, and thus description thereof is omitted.

FIG. 11 shows an embodiment in which a fixing member (3) is directly connected to a tip of a neck (13) to form a head (10).

20 The fixing member (3) in the illustrated example has a housing shape with a bottom opening, and a movable plate (4) having a string winding mechanism (5) is supported in the housing in a reciprocating manner. The connecting flange (39) to be fitted to the tip of the neck (13) is provided so as to protrude. Therefore, compared to the embodiment having the neck base, the material is saved, there are advantages such that labor for machining the-based alloy is omitted ^25. Industrial applicability

The usage of the tuning device according to the present invention will be described below.

First, the handle (60) of the reciprocating mechanism (6) is rotated to move the movable member (4) in the distal direction, and the display (the pointer (72) of the indicating scale indicates an appropriate tension state is indicated by a scale. When command (A) is given, the rotation of the handle (60) is stopped, and the stop position of the movement (4) is D-clicked by the regulating means i »T. Turn each knob (53) to tension each string (11) and adjust the tone of each string 01) accurately using a tone whistle etc.o-After use, release the opening of the control means ^ Then, the handle (60) is rotated in the opposite direction to that described above to retract the movable member (4), and the pointer (72) of the display (7) indicates an appropriate loose state. ), Stop the turning operation of the handle (60). In this state, all the strings αΐ) are evenly loosened, and if the stringed instrument is kept in this state, it is possible to prevent the strings from being cut or stretched, and the string attachment parts from being damaged or deformed.

When using the stringed instrument again, rotate the handle (60) until the pointer on the display (7) indicates the indication scale (A) indicating appropriate tension, and then move (4). By restoring), all the strings (11) will be in the same tension state as the last time they were tuned correctly, and there is no need to readjust each string (11). ,

For models without the display unit (7), counting the number of rotations of the handle (60) is almost equivalent to the above.

C. ',: PI

,:: \ ATl ( Get the effect of

Claims

(1) A mobile platform (4) is freely reciprocated in the stringing direction of the string (I) to the head of the stringed instrument αο, and each string end is wound on the transfer (4). A reciprocating mechanism for forcibly shifting the blue moving member (4) between the head (10) and the moving member (4) is attached. 6) A string tuning device in a stringed musical instrument comprising a deployed.

(2) The head (10) is constructed by attaching a fixing tie (3) to the lower surface of a head base (2) integral with the body (1) of the stringed instrument. A tuning device for the described stringed instrument.

(3) The tuning device for a stringed musical instrument according to claim 1, wherein the (head) is configured by connecting a fixed body (3) to the body (1) of the stringed instrument at the front end.

2. The winding mechanism (5) according to claim 1, wherein the winding mechanism (5) is connected to the operating shaft (51) having a knob (53) via a worm (52). A tuning device for stringed instruments.

⑤ 'The winding shaft W is vertically supported on the moving joint (4), and the operating shaft (51) is horizontally fixed to the lower surface of the moving joint (4), and the knob (53) is moved. 5. The tuning apparatus for a stringed musical instrument according to claim 4, wherein the tuning apparatus protrudes to the side of the stringed instrument. ''

© The bobbin shaft (50) is horizontally supported on the carriage (4), and the operating shaft (51) is vertically supported on the moving unit (4). 5. The tuning apparatus according to claim 4, wherein the tuning apparatus protrudes downward. One BUR £ 4

. _0Λ5ΡΙ 往復 The reciprocating mechanism (6) of the carriage (4) includes an operation handle (60) and a booster mechanism (8) for increasing the operation torque of the handle (60). A tuning device for a stringed musical instrument according to claim 1.

® Claim 7 wherein the booster mechanism (8) is a lever shaft (81).

A tuning device for the stringed instruments mentioned.

(9) The tuning device for a stringed musical instrument according to claim 7, wherein the booster mechanism (8) is a reduction gear-gear (84) (85).

往復 Reciprocate the string (II) in the direction in which the string (II) is stretched freely to the head (ttO) of the string-O---...... .. A reciprocating mechanism that forcibly transfers the movement (4) between the head (10) and the movement (4) by attaching the winding mechanism (5) with the winding shaft (50) The string winding shaft (50) is provided with a locking portion (55) having an enlarged opening of the string insertion hole 5d), and the hole is connected to the insertion hole (54) and cut into the shaft surface. A string adjusting device for a stringed instrument equipped with a stop (15), while forming a groove for engaging the string (56) and engaging a locking portion (55) at the string end.

弦 The string tuning apparatus for a stringed musical instrument according to claim 10, wherein the stop (15) has a thin conical shape on the connection side with the string.

⑬ The stop (15) is connected to the string (11) by engaging the chord end into the cut groove (16) to the peripheral surface and closing the groove opening. A tuning device for a stringed musical instrument described in the item.

止 The stringed musical instrument according to claim 10, wherein the stringer (15) has a string end embedded in the stringer (15) and connected to the string 01). Tuning

To the head of the stringed instrument, reciprocate freely in the direction in which the string (11) is stretched, and move (4) freely, and wind each string end onto the transfer (4). A string winding mechanism (5) equipped with a 50) is attached, and a reciprocating mechanism (6) for forcibly transferring the movement (4) is provided between the head (10) and the movement (4). In addition, the head (10) is provided with a display section (7) indicating the transfer process of the transfer (4) on a scale, and the display section (7) is provided with a transition of the transfer (4). A tuning device for a stringed musical instrument equipped with a display (OT) that displaces together.

The display unit (7) is provided with a display scale (指示) (指示) indicating an appropriate tension state and an appropriate relaxation state of the string (11) on the display plate (71), respectively. 13 The tuning indicator (70) of the stringed musical instrument described in Section 3 is pivotally movable so that it can move on the scale of the operating shaft (73) protruding above the movable joint (4) and the scale of the display (7). A string tuning device for a stringed musical instrument according to claim 13, comprising a pointer (72) set forth above, and a transmission member TO for transmitting movement of the operating shaft (73) to the pointer. (4) is freely reciprocated in the stretching direction of (), and a winding mechanism (5) having a winding shaft (50) for winding each string end on the moving connection (4) is attached. Between the head (10) and the movement (4), the reciprocating mechanism (6) forcibly transferring the movement (4) and the movement of the movement (4) due to the pulling force of the string are used. Regulate A tuning device for stringed instruments

. One OKPI