KR101631808B1

KR101631808B1 - apparatus for adjusting timbre of stringed instrument

Info

Publication number: KR101631808B1
Application number: KR1020150105163A
Authority: KR
Inventors: 엄태창
Original assignee: 엄태창
Priority date: 2015-07-24
Filing date: 2015-07-24
Publication date: 2016-06-17

Abstract

The present invention relates to a timbre adjustment apparatus for a stringed instrument. The stringed instrument includes a front plate, a back plate, and a side plate surrounding the plates, strings are installed along a finger board extending from the front plate to one side, and a sound is generated by fiddling or strumming the strings. The timbre adjustment apparatus for a stringed instrument comprises: a fixed means which is fixed to any one of the front plate or the back plate; a movable means which protrudes from the fixed means, and a front end of which comes in contact with the other side, to adjust the distance between the front plate and the back plate; an adjustment means which is supported by the fixed means to control the protrusion length of the movable means. Accordingly, it is possible to adjust timbre by adjusting the distance between the front plate and the back plate constituting the body of the instrument.

Description

[0001] The present invention relates to a tone adjusting device for a string instrument,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone color adjusting apparatus for a stringed instrument, and more particularly, to a tone color adjusting apparatus for a stringed instrument, which adjusts a tone color by adjusting a gap between a front plate and a back plate.

In general, a stringed instrument is a collective term for musical instruments that make a sound by vibrating using strings. The strings are usually made of sheep's intestines or metal, and vary in pressure depending on the type of sound desired and the size required. And make a sound by turning on or off the bow. The stringed instruments that are often played in the West are the violin tribe, guitar and harp, and today the interest in medieval instruments such as Lébeque, Lute and so on is on the rise.

As mentioned above, the types of string instruments are vowel type instruments including violin, viola, cello, double bass, guitar, harp, and the like. There are Korean string instruments such as 'Gayageum', 'Geomungo', 'Sugarbeet', 'Haegum', and 'Creamy'.

Typically, popular stringed instruments, violins and guitars, consist mainly of body and neck, two main parts. Both parts are made of wood. The body consists of a front plate (also referred to as a Belly, a Table, or a Soundboard) that forms the uppermost surface of the body, and a back plate ), And a side plate (also referred to as ribs) connecting the front plate and the back plate.

This body functions as a resonance to strengthen the vibration of the strings. The shape of the whole body looks like a waist, so it can be said to be similar to the human body. Inside the body is a sound post, which serves to transmit the vibration of the strings.

The neck is made of long, thin wood and includes a fingerboard. On the top of the fingerboard and the front plate there are several strands of strings, which vary according to the musical instrument. In the case of the violin, 4 lines and the guitar is 6 lines. Strings wrapped around each string are routed over a nut, running over the fingerboard, over a piece of wood called a bridge, to the tailpiece.

These stringed instruments make a sound when the bow rubs or strikes the string between the end of the fingerboard and the part where the bridge is located. At this time, the bridges supporting the strings also vibrate. The vibration is transmitted to the front panel, and some to the back panel. The holes formed on the front plate help to freely vibrate the underside of the instrument and serve as sound outlets from the instrument body. The shape of the hole formed in the front plate differs depending on the type of musical instrument.

Each of these string instruments has a unique tone color, and even if they are the same type of instrument, they have different tones due to a slight difference.

A tone is a characteristic of a sound that appears differently depending on a person or a musical instrument even if the pitch of the sound is the same, and it soon reaches a unique color of the sound that appears as a difference in waveform or frequency.

For example, the violin, which usually produces a four octave range of string instruments, produces a delicate, emotional treble that seems to break. Viola is lower than the violin and makes a slightly higher sound than the cello. Compared to the colorful and light violin, it is soft and heavy, a little darker and darker. In modern orchestra, the tone of viola tends to be emphasized. The cello, like the violin, has a wide range of four octaves and produces a strong, soft bass. The bass is dark and mysterious, and the treble is sharp and intense. It can be played fast and rhythmically, so it is often used as a solo performance. Double bass is responsible for the lowest range. The high range is a soft, appealing bass, and the low range is a dark and bizarre bass. The harp has a mysterious and fantastic tone as a chord that is produced by the resonance of a large and long sound.

These tones are mainly influenced by bridges, fingerboards, front plates, back plates, sound posts, and in particular, the sound posts are one of the factors that have a great influence on the tone. In the case of a violin, the sound post is installed in a column shape at an arbitrary position between the front plate and the back plate, as described above, and the tone varies greatly depending on the installation position. The sound posts are formed in a cylindrical shape having a predetermined length and are formed to have a predetermined length longer than the interval between the front plate and the back plate and moved at an arbitrary position between the front plate and the back plate so that the sound posts are left at the position where the best tone is emitted to adjust the tone. These tasks are usually performed by musical instrument experts.

However, since the sound posts are moved due to external shocks or storage errors, the users of general musical instruments may not actively replace them, or may attempt to arbitrarily adjust them, thereby causing harm to the tone.

In addition, the string instrument such as a guitar is not equipped with the above-mentioned tone color adjusting device, and thus there is a limitation in producing the best tone color.

Accordingly, in Korean Patent Laid-Open No. 10-2010-0120629, a piezoelectric element capable of converting the vibration and pressure of a string into an electrical signal is formed on a lower plate, and a sound post and a resonance generated in the upper plate is transmitted to the piezoelectric element and the lower plate through the sound post.

However, such a structure is structurally troublesome due to the provision of a separate piezoelectric element, and still can not escape the level of reliance on the position of the sound post.

Korean Patent Laid-Open Publication No. 10-2013-0072650 discloses a method for detecting a vibration generated by an acoustic pulse signal generated in a string while supporting a string generating vibration by a player, A main bridge base for holding the shape of the inner space formed in the auxiliary bridge portion from the outside and for supporting each constitution of the auxiliary bridge portion to be securely secured and for protecting from external impact, And a sound control unit for adjusting at least any one of a spatial sound effect and a gain through a mix of an externally input audio signal and a sound signal to generate a sound signal. .

This structure maintains the deep tone of the musical instrument while lowering the volume of the strings, and it can also provide the sound of expensive old musical instruments even by using a low price string, thereby effectively solving the demands of the tone of the musical instrument .

However, such a conventional structure includes a means for generating an electrical signal to the bridge, and the structure is complicated. Particularly, adjustment of a tone by an electrical signal is performed, There was a problem.

Korean Patent Publication No. 10-2010-0120629 Korean Patent Publication No. 10-2013-0072650

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a tone color adjusting apparatus for a stringed instrument which can effectively select a tone color by effectively adjusting a distance between a front plate and a back plate.

The object of the present invention is to provide a string instrument which comprises a front plate and a back plate and a side plate surrounding the front plate and the back plate and is provided with a string along a support plate extending from one side of the front plate, A movable means which is fixed to either one of the front and rear plates, a movable means which comes into contact with one side of the other end of the fixed member and adjusts the distance between the front plate and the rear plate, And adjusting means for controlling the length of the protrusion of the means.

Wherein the fixing means is a cylindrical type which is inserted through a fixing hole formed in a back plate, one side is opened and the other side is formed with a communication hole, a screw is formed on the outer circumference and a radial direction is extended from the end on the opening side, An upper supporting member having a latching jaw which is tightly engaged, an engaging portion formed on one side with a female screw threadably engaged with the fixed portion of the upper supporting member, and an extending portion extending in the opposite direction, As shown in Fig.

The movable means is formed with a male screw that is screwed to a female screw formed on an outer side of the extension of the lower support member and is moved forward or backward in the axial direction by rotation. A sliding groove is formed on one side along the axis, And a pressing rod having a movable member on which a groove is formed and a pressing tip fixed on one of the fixing grooves of the movable member and on the opposite side to the inner surface of the front plate.

And a fixed cap coupled to the upper support member to limit the protruding length of the movable member.

It is preferable that the tip of the pressing tip is formed in a spherical shape.

Wherein the adjusting means includes an adjustment knob inserted into the upper support member and a coupling shaft inserted into the communication hole of the upper support member on one side and engaged with the adjustment knob on one side and the coupling shaft extending in the axial direction on the other side, And a rotary rod connected to the power transmitting shaft and having one end connected to the connecting portion and the other end extended and slidably engaged with the sliding groove of the moving member.

Each of the rotary rod and the sliding groove is formed into a polygonal shape having a square or more.

The power transmitting shaft is further provided with locking means for interfering with a fixing member fixed to the upper supporting member to restrict rotation of the power transmitting shaft.

The locking means includes a fixing member which is rotatably coupled to the power transmitting shaft and fixed to the upper supporting member at the outside of the power transmitting shaft, and the fixing member is extended outward in the radial direction to form a plurality of engaging grooves And an elastic member having an elastic restoring force in the axial direction is fixed to a portion adjacent to the connection portion of the power transmitting shaft, and a locking protrusion elastically coupled to one of the retaining grooves of the retaining plate is formed in the elastic member do.

The tone color adjusting device according to the present invention adjusts the interval between the front plate and the back plate by advancing or retracting the movable sleeve according to the amount of rotation of the adjustment knob, It is possible to fix it and fix it even when the plate material is deformed for a long period of use, so that the tone color adjusting device which can be used very effectively can be provided.

In other cases, the guitar suitable for fingering, the guitar suitable for stroke, the guitar suitable for pickup, and the guitar suitable for recording are respectively designed. In this case, Which has the function of adjusting the beat effect, which is the principle of resonance, can be implemented in a guitar having the above four functions.

FIG. 1 is a perspective view of a tone color adjusting apparatus of a stringed instrument according to the present invention,
FIG. 2 is an exploded perspective view showing a structure of a tone color adjusting device of a stringed instrument according to the present invention. FIG.
3 is an exploded sectional view showing a configuration of a tone color adjusting apparatus of a stringed instrument according to the present invention;
4 is a perspective view showing an embodiment in which the tone color adjusting device of a stringed instrument according to the present invention is mounted on a musical instrument.
FIG. 5 is a sectional view showing a state in which the tone color adjusting device of a stringed instrument according to the present invention is in a state of being applied to a musical instrument,
FIG. 6 is a sectional view showing an expanded state as an operating state in a state where a tone color adjusting device of a stringed instrument according to the present invention is applied to a musical instrument

Hereinafter, the structure of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 illustrate a configuration of a tone color adjusting apparatus of a stringed instrument according to the present invention, and FIG. 4 shows a state where the tone color adjusting apparatus is installed in a real musical instrument. According to the present invention, there is provided a string instrument comprising: a fixing means fixed to a back plate (10) of a stringed instrument; a movable means which comes into contact with one side of the front end and protrudes from the fixing means and adjusts the distance between the front plate (20) And adjusting means for supporting the protruding and retracting length of the movable means.

3, the upper and lower support members 100 and 100, which are fixed to the rear plate 10 by mutual engagement at the inside and outside of the fixing hole 12 formed in the rear plate 10, (200).

The upper support member 100 is inserted through the fixing hole 12 and is formed with a male screw 102 on its outer periphery and a cylindrical shape with one side open and a communication hole 104 on the other side, (110) extending in the radial direction and engaged with the outer side of the back plate (10).

The lower support member 200 includes a coupling part 210 formed with a female screw 212 threadedly engaged with the male screw 102 of the upper support member 100 at one side and a coupling part 210 extending to the opposite side from the coupling part 210, An extension 220 is formed integrally with the female thread 222 and the male thread 224 formed on the outer side. The coupling part 210 and the extension part 220 are communicated with each other by the communication hole 240 to allow entry of the rotary rod described later.

The upper support member 100 is screwed into the female screw 102 of the lower support member 200 by screwing the female screw 212 of the lower support member 200 to the upper surface of the connection portion 210 in a state in which the engagement jaw 110 is engaged with the surface of the rear plate 10. [ The upper support member 100 and the lower support member 200 are firmly coupled to the back plate 10 by the end portions being in close contact with the inner surface of the back plate 10. [

The movable unit includes a moving member 300 screwed to the lower supporting member 200 and linearly moving when rotated, and a pressing rod 330 fixed to a distal end of the moving member 300.

The shifting member 300 is formed on the outer side with a transfer male screw 302 that is screwed to a transfer female screw 222 formed on the extension 220 of the lower support member 200 and is advanced or retracted axially by rotation A sliding groove 310 is formed on one side along the axis and a fixing groove 320 is formed on the other side.

The present invention includes a fixed cap 700 that limits the shifting position of the shifting member 300 from the lower supporting member 200. The fixed cap 700 is formed in a cylindrical shape with one side opened and a female screw 710 screwed to the male screw 224 formed outside the extended portion 220 of the lower support member 200 is formed, A through hole 720 into which the pressurizing rod 330 is inserted is formed.

When the moving member 300 reaches the inner end of the extension 220 at the inner side of the extension 220 of the lower support member 200, that is, at the inner end of the feed screw 222, The stopper 250 is formed. That is, the locking protrusion 250 is formed in the periphery of the communication hole 240, and restricts the movement of the moving member 300 in the axial direction.

It is preferable that a wavy protrusion 230 is formed on the outer circumferential surface of the coupling part 210 of the lower support member 200 in order to increase the rotational force at the time of screwing with the upper support member 100.

Accordingly, the moving distance of the moving member 300 is limited at the forward and backward positions by a predetermined distance. Preferably, the moving distance of the moving member 300 is 4 mm.

One end of the pressing rod 330 is fixed to the fixing groove 320 of the moving member 300 and the other side of the pressing rod 330 is integrally formed with a pressing tip 332 contacting the inner surface of the front plate 20. The tip of the pressure tip 332 is preferably formed in a spherical shape to minimize the possibility of damaging the front plate by partially applying pressure while reducing frictional force with the front plate 20.

The adjusting means includes an adjusting knob 400 and a power transmitting shaft 500 coupled to the adjusting knob 400. The adjusting knob 400 is coupled to the power transmitting shaft 500 and the other is coupled to the moving member 300. [ And a rotating rod 600 for transmitting the rotational force of the adjusting knob 400 to the moving member 300.

The adjustment knob 400 is inserted into the open end side of the upper support member 100, and a fastening hole 410 is formed. The outer surface of the adjustment knob 400 is preferably configured such that it can be gripped by a person and rotated, and is configured such that the rotation does not slip due to roughness on the surface.

The power transmitting shaft 500 is inserted into the communication hole of the upper support member 100 at one side to form a coupling shaft 510 to be coupled to the coupling hole 410 of the adjustment knob 400, And the connection portion 520 at the end is formed integrally.

One end of the rotation rod 600 is formed with a connection groove 610 to be engaged with the connection portion 520 and the other end is extended in the axial direction to connect the sliding groove 310 of the movable member 300 and the axial slip Lt; / RTI >

The rotating rod 600 and the sliding groove 310 are formed in a polygonal shape having a triangular shape or the like so that when the rotating rod 600 rotates, the moving member 300 rotates together. More preferably a square to hexagonal shape. Most preferably a square shape. The connection portion 520 and the connection groove 610 are coupled to each other by interference fit and further a fixing pin (not shown) penetrating the connection groove 610 and the connection portion 520 is provided, The slip between the shaft 500 and the rotary rod 600 can be prevented. Such slip prevention can also be achieved by forming the connection groove 610 and the connection portion 520 in a rectangular shape.

Preferably, the present invention includes locking means for restricting rotation of the adjustment knob 400 on the power transmitting shaft 500. This is provided to limit the adjustment of the adjusted best adjustment state by the natural rotation of the adjustment knob 400 in the adjusted state.

The locking means includes a fixing member 800 which is fixed to the upper support member 100 and to which the power transmission shaft 500 is rotatably coupled and a fixing member 800 fixed to the power transmission shaft 500, And an elastic member 820 for mutually elastic action.

The fixing member 800 is formed at its central portion with a fastening shaft 510 of the power transmission shaft 500 through which the fastening shaft 510 is allowed to flow so that a male shaft 802 is formed on the outer side thereof, And is fixed to the upper support member 100 by a nut 804 inserted into the hole 104 and inserted into the open end of the upper support member 100 and fastened to the male screw 802. On one side of the fixing member 800, a retaining plate 810 having a plurality of retaining grooves 812 extending circumferentially outward in the radial direction is integrally formed.

A locking piece 814 is formed at an upper portion of the outer circumferential surface of the retaining plate 810 and the retaining piece 814 is inserted in the vicinity of the communication hole 104 of the upper supporting member 100, 800) is formed in the stopper hole (106). This is an auxiliary means for completely blocking the rotation of the fixing member 800 that can be expected according to the rotation of the power transmitting shaft 500 due to loosening of the fastening force of the nut 804. [

The elastic member 820 is a plate member fixed to the lower end of the power transmitting shaft 500 and having an elastic force in the axial direction. At least one locking protrusion 822 is formed on the surface of the plate member 820, (812) to limit the rotation of the power transmitting shaft (500).

The tone color adjusting apparatus of the stringed instrument according to the present invention having such a configuration is installed between the back plate and the front plate as shown in Fig. FIGS. 5 and 6 are enlarged cross-sectional views illustrating an installation portion of the tone color adjusting apparatus according to the present invention, and show a process of adjusting an actual tone color. Fig. 5 is a reduced state in which the pressing rod is inserted, and Fig. 6 is an expanded state in which the pressing rod protrudes. According to the present invention, when the adjustment knob 400 is rotated, the power transmitting shaft 500 coupled to the rotating knob 400 is rotated, and the rotating rod 600 is rotated.

The rotation of the rotating rod 600 is combined with the sliding groove 310 of the rectangular shape to carry the rotation of the shifting member 300. The shifting member 300 moves the transferring screw 302 and the lower supporting member 200 And moves in the axial direction by the interaction of the female screw 222. The direction of movement of the movable member 300 is also reversed in accordance with the rotation direction of the adjustment knob 400.

Accordingly, the pressing rod 330 coupled to the moving member 300 moves forward or backward, and an optimum tone color is found in a process of pressing the inner surface of the front plate 20 or releasing the pressure.

When the movable member 300 is protruded by a predetermined distance, the distal end of the movable member 300 is caught by the pen fixing cap 700 and can not advance further. This makes it possible to prevent problems such as breakage caused by the moving member 300 advancing indefinitely and exerting excessive force on the front plate 20.

On the other hand, when the adjustment knob 400 is rotated, the elastic member 820 coupled to the power transmission shaft 500 rotates together. At this time, the latching protrusion 822 of the elastic member 820 moves along the plurality of latching grooves 812 formed in the latching plate 810. At this time, the latching protrusion 822 repeatedly engages the latching grooves 812 A latching sound is generated for each latching groove 812 while riding over. This is transmitted to the operator through auditory and hand vibration, so that the operator can perform the adjustment while sensing the amount of rotation. The locking protrusion 822 is inserted into the corresponding locking groove 812 to be elastically pressed in the axial direction at a point where the rotation of the adjustment knob 400 is stopped by finding a desired tone color so that the adjustment knob 400 is not subjected to an external force The rotation does not occur, and the adjusted state is maintained as it is.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. And should be understood to fall within the scope of protection of the invention.

That is, although the fixing means is fixed to the rear plate 10 in the above embodiment, it is also possible to sufficiently fix the rear plate 10 by providing the fixing means on the front plate 20.

The engaging groove 812 of the latching plate 810 and the latching protrusion 822 of the elastic member 820 constituting the locking means may be formed at mutually opposite positions. That is, it is also expected that the latching protrusion is formed on the latching plate 810 and the latching groove is formed in the elastic member 820.

In addition, the locking means may be configured to use a spring-resiliently supported ball in addition to the above embodiment. That is, a ball spring is disposed on the upper support member, and a retaining plate having a plurality of retaining holes is formed in proximity to the retaining plate. These examples exist in many cases, and a detailed description thereof will be omitted.

10: back plate 20: front plate
100: upper support member 102: male screw
104: communication hole 106: support hole
200: lower support member 210:
212: female thread portion 220: extension portion
222: Feeding female thread 224: Male thread
300: moving member 302:
310: sliding groove 320: fixing groove
330: pressing rod 332: pressing tip
400: adjusting knob 410: fastening groove
500: power transmission shaft 510: fastening shaft
512: Nut 520: Connection axis
600: rotating rod 610: connecting ball
700: Fixed cap 710: Female thread
720: Through hole
800: fixing member 810: retaining plate
812: engaging groove 814: engaging piece
820: elastic member 822; Obstacle

Claims

A rear plate 10 having a front plate 20 and a fixing hole 12 formed thereon and a side plate surrounding the front plate 20. The string is installed along a supporting plate extending on one side of the front plate 10, A tone color adjusting device for a stringed instrument,
Is inserted through a fixing hole (12) formed in the back plate (10), a male screw (102) is formed on an outer circumference thereof, and one side is opened and the other side is formed in a cylindrical shape having a communication hole (104) An upper support member 100 having a latching hole 106 formed around the latching member 104 and having a latching protrusion 110 which is radially extended from an end of the latching opening to be closely attached to the outer side of the backing plate 10, And a wedge protrusion 230 formed on an outer circumferential surface thereof and a fastening part 210 having a wedge protrusion 230 formed on an outer circumferential surface thereof and a fastening part 210 fastened to the fastening part 210 on the opposite side And the extension part 220 is integrally formed with the extension part 220. The extension parts 220 and the extension parts 220 are formed in the inner side of the communication hole 240 The upper support member 100 includes a lower support member 200 and a lower support member 200. The lower support member 200 is connected to the lower support member 100, The female screw 212 of the lower support member 200 is screwed to the male screw 102 so that the end of the coupling portion 210 is engaged with the inner surface of the rear plate 10 so that the upper support member 100 The lower supporting part 200 is fixed to the back plate 10 and the engaging protrusion (not shown) for restricting the entry of the moving member 300 at the inner end of the extending part 220 at the inner end of the transferring screw 222 250) is formed around the communication hole (240);
A transfer male screw 302 that is screwed to a transfer female screw 222 formed on the extension part 220 of the lower support member 200 is formed on the outer side of the lower support member 200 to be screwed to the lower support member 200, A movable member 300 having a polygonal sliding groove 310 formed on one side along the axis and a fixing groove 320 formed on the other side of the movable groove 300, And a pressing tip 332 fixed to the other end of the front plate 20 so as to reduce the frictional force when the pressing tip 332 is in contact with the front plate 20, And a pressing rod (330) formed of the pressing rod (330).
An adjustment knob 400 inserted into the open end side of the upper support member 100 and having a fastening hole 410 and having a rough surface and a control knob 400 inserted into the communication hole of the upper support member 100, A power transmitting shaft 500 extending axially to the other side of the coupling shaft 510 and having a rectangular connecting portion 520 formed at an end thereof; And the other side is axially slidably coupled to the sliding groove 310 of the movable member 300 in an axial direction so as to be rotatable about the adjustment knob 400 ) For transmitting the rotational force of the movable member (300) to the moving member (300), and controlling the protruding / retracting length of the movable unit by converting the rotational motion into linear motion;
A coupling shaft 510 of the power transmission shaft 500 is inserted into the center of the upper portion of the upper support member 100 so as to be fluidly connected and a male screw 802 is formed on the outer side of the coupling shaft 510 to be inserted into the communication hole 104 of the upper support member 100, Is fixed to the upper support member (100) by a nut (804) inserted into the open end side of the support member (100) and fastened to the male screw (802), and is extended radially outwardly on one side, A fixing member 800 having a latching plate 810 having a latching groove 812 formed integrally with the latching plate 810 and having a latching part 814 bent upwardly at a part of the outer circumferential surface of the latching plate 810 and inserted into the latching hole 106, And at least one engaging projection 822 is formed on the surface of the engaging plate 810 so as to engage the engaging groove 812 of the engaging plate 810 And an elastic member 820 which is caught by the power transmission shaft 500 and restricts rotation of the power transmission shaft 500 Configured locking means;
A female screw 710 which is threadedly coupled to a male screw 224 formed on the outer side of the extension 220 of the lower support member 200 is formed on the other side of the lower support member 200 and a press rod 330 is inserted (700) formed with a through hole (720) for limiting the moving position of the moving member (300) from the lower supporting member (200);
&Lt; / RTI >
Tone adjustment device for strings.

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