JP2000194374A - Small-sized guitar and small-sized bass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a child to easily play a small-sized guitar and small-sized bass and to easily smoothly play an ordinary guitar and ordinary bass in future. SOLUTION: The taper of in the width of a neck 3 of the small-sized guitar having a scale S of 300 to 560 mm is specified 0.029 to 0.033. The gear ratio of a peg 13 is specified to 25 to 35 and the shaft diameter of a peg shaft 14 to 3.0 to 4.0 mm. Or in the small-sized bass, the scale S is 500 to 660 mm and the taper of the width of the neck 3 is to 0.024 to 0.042. The gear ratio of the peg 13 is specified to 35 to 45 and the shaft diameter of the peg shaft 14 to 5.0 to 6.5 mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized guitar and a small-sized bass in which a guitar and an electric bass are respectively made smaller in size than usual.

[0002]

2. Description of the Related Art Guitars and electric basses (hereinafter, abbreviated as "bass") are the most popular roded plucked musical instruments in modern times, and are used in various music fields. For this reason, the desire to practice guitar and bass from a young age is as great as pianos and violins. In this case, usually as a practice guitar,
For an adult, for example, a guitar having a scale (string length) of 628 to 648 mm is used as it is.

[0003]

However, such a normal-sized adult guitar (hereinafter referred to as a "normal guitar") is too large for a child as a whole and is difficult to handle. Due to the difficulty, it is easy to overdo the performance, which is a factor that hinders the progress of the performance or stops the practice on the way. Of course, such a problem can be solved by using a smaller-sized guitar (hereinafter, referred to as a "small guitar"). As such a conventional gut guitar, for example, a Rekinto guitar is known. However, since the pitch of this rekind guitar is higher than that of a normal guitar by about 5 degrees, when the child grows up and plays the normal guitar in the future, a sense of incongruity occurs due to the difference in pitch. In order to avoid this, it is necessary to prepare a dedicated musical score obtained by transposing a musical score for a normal guitar, and in any case, there is a problem that it is not possible to smoothly transition to a normal guitar.

[0004] As another conventional small guitar, there is also known a small guitar whose pitch is the same as that of a normal guitar. This small guitar does not cause the above-described problem due to the difference in pitch. However, since this small-sized guitar is basically simply made compact so that it can be played by adults and easily carried and stored, there are the following problems when children play. . That is, in such a small guitar, there is a type in which the width of the neck, for example, the width at the zero fret and the 12th fret is set to the same value as that of a normal guitar, in which case, the width of the neck is totally for a child. Because it is too large, it is difficult to press strings and fingering, etc., and as the string length is shorter, the taper slope of the neck width becomes larger than the usual guitar because the neck length is shorter, so transition to the normal guitar In such a case, a sense of incongruity occurs especially in fingering along the length direction of the neck. In addition, since the string winding of the guitar is usually diverted to this small guitar, the string winding is too hard for the child to stretch the strings against the tension, and it is difficult to operate the strings. Furthermore, small guitars have a shorter string length, and the degree of change in pitch with respect to changes in string tension is greater than that of ordinary guitars. There is also a disadvantage that tuning cannot be performed because it cannot be adjusted.

[0005] The present invention has been made to solve such problems, and it is easy for children to play.
It is an object of the present invention to provide a small-sized guitar and a small-sized bass that can be smoothly shifted to a normal guitar and a normal bass, respectively, in the future.

[0006]

To achieve this object, the invention according to claim 1 has a scale of 300 to 560.
mm guitar with a neck width of 0.
029 to 0.033.

This small guitar has its scale (string length)
Is set to 300 to 560 mm, which is smaller than the normal guitar scale (628 to 648 mm), so that the child can play without difficulty. In addition, since the taper of the neck width is maintained in the same range as that of a normal guitar in the range of 0.029 to 0.033, fingering along the length direction of the neck when shifting to a normal guitar in the future will be described. This makes it possible to smoothly transition to a normal guitar. In this case, the taper of the width of the neck refers to a value obtained by dividing the difference between the width of one position of the neck and the width of the other position by the length of the neck between them.

[0008] In order to achieve the above object, a second aspect of the present invention is provided.
Is a small-sized guitar having a scale of 300 to 560 mm, wherein the gear ratio of the string winding is 25 to 35 and the shaft diameter of the string winding shaft is 3.0 to 4.0 mm.

Here, the gear ratio of the winding means the ratio of the rotation speed of the winding shaft to the rotation speed of the winding knob. For example, a gear ratio of 25 means that the winding shaft makes one rotation when the winding knob makes 25 rotations. Means that. In the small guitar of the present invention,
This gear ratio is set in the range of 25 to 35 which is larger than that of the normal guitar (14 to 18). In addition, the diameter of the winding shaft is 3.0 to 3.0, which is smaller than that of a normal guitar (about 6 mm).
It is set in the range of 4.0 mm. Therefore, according to this small-sized guitar, since the reduction ratio of the string winding becomes larger and the torque due to the tension of the string acting on the winding knob becomes smaller than that of a normal guitar, even a child can easily tune with a small operation force. be able to. Also, for the same reason, the amount of winding of the string by the winding shaft for the same rotation operation amount of the winding knob becomes smaller. Fine tuning of the pitch can be easily performed in a small guitar having a characteristic that the degree of change of the pitch is large.

Further, in order to achieve the above object, the invention according to claim 3 is a small-sized base having a scale of 500 to 660 mm and a taper of a neck width of 0.024 to
0.042.

In the present invention, the same concept as in claim 1 is applied to a small-sized base, that is, the scale is larger than the scale (770-864 mm) of a normal-size adult base (normal base). Small 500-66
With the setting of 0 mm, the child can play without difficulty. Also, the taper of the neck width is 0.0
In the range of 24 to 0.042, the same range as that of the normal base is maintained, so that it is possible to smoothly shift to the normal base without causing a sense of incongruity in fingering.

According to another aspect of the present invention, the above object is achieved.
Is a small-sized base having a scale of 500 to 660 mm, wherein the gear ratio of the helical winding is 35 to 45, and the diameter of the helical winding shaft is 5.0 to 6.5 mm.

In this small-sized base, the gear ratio of the helical winding is set in a range of 35 to 45 larger than that of the normal base (20 to 28), and the diameter of the helical winding shaft is set to the normal base (9 to 14 m).
m) is set in the range of 5.0 to 6.5 mm smaller than m). Therefore, similarly to the small-sized guitar according to the second aspect, tuning can be easily performed with a small operation force with high accuracy.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a small guitar (electric small guitar) to which the present invention is applied.
Is shown. This small guitar 1 is one size smaller than a normal guitar, and is configured as a guitar exclusively for children.

As shown in FIG. 1, the configuration itself of the small guitar 1 is the same as that of a normal guitar.
A neck 3 extending from the body 2 and six strings 4 stretched along the neck 3 are provided. On the surface of the body 2, in order from the neck 3 side, the first and second microphones 5,
6, a lower piece (lower string receiver) 7 and a tailpiece 8 are provided. A fingerboard 9 is attached to the surface of the neck 3, and a plurality of frets 10 are embedded on the surface of the fingerboard 9 at predetermined intervals along the length direction of the fingerboard 9. The tip (zero fret) is an upper piece (upper string receiver) 11.

The head 12 at the tip of the neck 3 is provided with a plurality of chord windings 13 for each of the strings 4. Each of the bobbin windings 13 penetrates the head 12 in the up-down direction, and has a rotatable bobbin shaft 14 having a string mounting hole 15 (see FIG. 3) at an upper portion.
And a string knob 16 protruding laterally from the head 12. A pinion (not shown) is formed integrally with the winding shaft 14, and a worm (not shown) that meshes with the pinion is formed integrally with the winding knob 16.
Then, with one end of the string 4 engaged with the tailpiece 8 and the other end inserted into the string mounting hole 15 of the string shaft 14, the string knob 16 is rotated, and the string shaft is rotated via a worm and a pinion. By rotating the string 14, the string 4 is wound around the string winding shaft 14 and is stretched between the string 4 and the tailpiece 8. The scale (string length) S of the small guitar 1 is defined as the length between the upper piece 11 and the lower piece 7, as shown in FIG.

The string 4 is composed of a single wire or winding of steel, and is formed in advance in a length corresponding to the scale S of the small guitar 1, and its pitch is set to be the same as that of a normal guitar. This allows for a smooth transition to a regular guitar. In this case, the same string as that of a normal guitar is used as the string 4, so that the string S
The string 4 may be made easier to hold down by reducing the tension of the string to about 70%, for example, or the same tension as that of a normal guitar may be maintained by using a string 4 that is thicker than a normal guitar. .

As shown in FIG. 3, one end of the string 4 is twisted (FIG. 3A) or wound around a grooved holder 17 for fixing the tail piece (FIG. 3). Along with (b)), a ring-shaped folded portion 18 slightly larger than the string mounting hole 15 of the string winding shaft 14 is formed at the other end by rounding the core wire portion. With this configuration, the folded portion 18 of the string 4 can be smoothly inserted into the string mounting hole 15 as shown in FIG.
Since the turn-back portion 18 can reliably prevent the string 4 from coming off during winding, even a child can easily wind the string 4 around the string winding shaft 14. Further, since the folded portion 18 of the string 4 is folded in a ring shape and the cut surface is not exposed, even the child can safely wind the string 4.

Next, with reference to Table 1 and the drawings, major components of the small guitar 1 of the present embodiment and dimensions between the components will be described. In the right column of the table, the dimensions of the normal guitar are also described as comparative examples.

[0020]

[Table 1]

First, the scale S of the small guitar 1 is
Normally, it is smaller than the scale of a guitar (628 to 648 mm or more) and is set to 300 to 560 mm. The zero fret width WNO of the neck 3 (see FIG. 2), that is, the width of the upper piece 11 is smaller than that of a normal guitar (40 to 42 mm) and is set to about 37 mm.
TN1, T at 1st and 12th fret
N12 (see Fig. 5) is also a regular guitar (each about 20m
m, about 21 mm), each about 18 mm,
It is set to about 19 mm. Further, the upper piece pitch PSL and the lower piece pitch PSH (see FIG. 4), which are the intervals between the strings 4 and 4 in the upper piece 11 and the lower piece 7 (see FIG. 4), are usually guitars (about 7.0 mm, about 10mm)
Smaller than about 6.0 mm and 8.5 mm, respectively. As described above, in this small guitar 1, not only the scale S but also the width WNO and the thickness TN1, TN12 of the neck 3, the pitch PSL of the string 4,
Since PSH is also set to be small, even a child with small hands can easily perform the performance by easily grasping the neck 3 and pressing the strings 4.

On the other hand, the width taper TNW of the neck 3 is 0.02.
9 to 0.033, thickness taper TNT is 0.003 to 0.0
06, which is maintained in the same range as the normal guitar. Here, the width taper TNW of the neck 3 is, as shown in FIG. 2, the width of one position of the neck 3 (for example, zero fret width WNO) and the width of another position (for example, 12 fret width WN12). It refers to the value obtained by dividing the difference by the length LNO-12 of the neck 3 between them. Similarly, the thickness taper TNT of the neck 3 is a value obtained by dividing the difference between the thicknesses (for example, TN1 and TN12) at two different positions of the neck 3 by the length of the neck 3 between them.

As described above, the small guitar 1 of the present embodiment
In this example, the width and the thickness of the neck 3 are set to be smaller than those of the normal guitar, while the width taper TNW and the thickness taper TNT of the neck 3 are maintained in the same range as the normal guitar. Therefore, when the child grows up and shifts from the small guitar 1 to the normal guitar in the future, the fingering along the length direction of the neck 3 will not be uncomfortable, and the smooth transition to the normal guitar will not occur. it can.

In this small guitar 1, the string height is set smaller than that of a normal guitar. here,
As shown in FIG. 5, the chord height refers to the height from the vertex of the fret 10 to the chord 4 above it. In this embodiment, 1
String height HS1, HS12 at fret and 12th fret
However, the usual guitar (0.8-1.0 mm, 1.8, respectively)
0.3 to 0.5 mm smaller than 1.0 to 2.0 mm).
Each is set to 2 to 1.5 mm. By reducing the string height in this way, the string 4 can be pressed with a smaller force, so that the child can play more easily. In addition, the small guitar 1 has a tendency that the pitch shift accompanying the increase in the string tension at the time of pressing the string is large because the scale S is small as compared with the normal guitar. This pitch shift can be suppressed.

In the small guitar 1, the width WF and the height HF (see FIG. 5) of the fret 10 are also smaller than those of a normal guitar (2.0 to 2.7 mm and 1.5 mm, respectively). It is set to 1.0 mm. By reducing the height HF of the fret 10, as shown in FIG. 6, the string pressing distance is shortened, and accordingly, the above-mentioned increase in the string tension at the time of string pressing is reduced. The displacement can be further suppressed.

The reason why the width WF of the fret 10 is reduced is as follows. That is, as shown in FIG. 7A, the fret 10 generally has a chevron-shaped cross section, and the chord 4 originally contacts the vertex of the fret 10 in a point contact state. In addition, it is necessary to keep the height of the fret 10 constant in order to prevent chattering of the sound, but it is unavoidable that a certain mounting error occurs immediately after the fret 10 is embedded in the fingerboard 9. Therefore, after the fret 10 is attached, it is general that the top is cut to keep the height constant. As a result, the contact state of the string 4 changes from point contact to surface contact, as shown in FIGS.
The chord length from the lower piece 7 to the fret 10 is reduced from the original L by the width of the top surface of the fret 10.

FIG. 2B shows a situation where the width of the fret 10 is equal to that of a normal guitar. In this case, since the original width of the fret 10 is relatively large, the top surface of the fret 10 is relatively large. The dispersion of the width ΔL1 and ΔL1 between the frets 10 and 10 increases. Such a variation in ΔL1 leads to a deviation in pitch, and in the small guitar 1 having a small scale S, the deviation in pitch appears remarkably. The above-mentioned setting of the width WF of the fret 10 takes this point into consideration, and by setting this width WF smaller than that of a normal guitar, as shown in FIG. The width ΔL of the top surface of the fret 10
2 and the variation of ΔL2 between the frets 10 and 10 can be made narrower than in the case of FIG. 2B, whereby the deviation of the pitch in the small guitar 1 can be suppressed as much as possible.

Further, in the small guitar 1 of the present embodiment,
The gear ratio RG of the winding 13 and the shaft diameter DG of the winding shaft 14 are
It is smaller than a normal guitar (14-18, respectively, about 6 mm), and is set to 25-35, 3.0-4.0 mm, respectively. Here, the gear ratio RG of the bobbin 13 refers to the ratio of the rotational speed of the bobbin shaft 14 to the rotational speed of the bobbin knob 16. For example, the gear ratio RG25
This means that the winding shaft 14 makes one rotation when making five rotations. Therefore, according to the small-sized guitar 1, the reduction ratio of the string winding 13 is increased and the torque due to the tension of the string 4 acting on the string winding knob 16 is reduced as compared with the ordinary guitar, so that even a child can adjust the tuning with a small operating force. Can be easily performed. Also, for the same reason,
Since the amount of winding of the string 4 by the string winding shaft 14 for the same rotation operation amount of No. 6 is small, the scale S is small, so that there is a characteristic that the degree of change in pitch with respect to change in tension of the string 4 is large. In the small guitar 1, fine adjustment of the pitch can be easily performed.

As described above, the small guitar 1 of the present embodiment
According to the conventional guitar, not only the scale S but also the width WNO and the thickness TN1, TN12 of the neck 3 and the string 4
The pitches PSL and PSH and the string heights HS1 and HS12 are also set small, so that even small children can easily hold the neck 3 and hold down the strings 4 so that they can easily perform. Also, the width taper TNW of the neck 3
And the thickness taper TNT remains in the same range as the normal guitar, so that if the child grows up and transitions from the small guitar 1 to the normal guitar in the future, the movement along the length of the neck 3 No discomfort is caused to the fingers, and a smooth transition to a normal guitar can be achieved.

Further, since the gear ratio RG of the bobbin 13 and the shaft diameter DG of the bobbin shaft 14 are set smaller than those of a normal guitar, the child can easily perform tuning with a small operating force and with high accuracy. Also, fret 10
The width WF and the height HF are set to be smaller than those of a normal guitar, so that deviations in pitches and pitches due to cutting and string pressing of the fret 10 can be suppressed as much as possible.

FIG. 8 shows a small base (electric small base) to which the present invention is applied. The small base 21 is one size smaller than the normal base, and is configured as a child-only base. The configuration of the small base 21 is the same as that of the small guitar 1 of FIG. 1 except for the number of the strings 4 and the like, and therefore, the same components are denoted by the same reference numerals and description thereof will be omitted. Table 2 below
The figure shows the main components of the small base 21 and the dimensions between the components, etc., in comparison with the normal base.

[0032]

[Table 2]

As is clear from Table 2, this small bass 21 has a scale S, a width WNO and a thickness TN1, TN12 of the neck 3, and a string 4 similar to the relationship between the small guitar 1 and the normal guitar in Table 1. Are set to respective predetermined values smaller than the normal base, and the width taper TNW and the thickness taper TNT of the neck 3 are maintained in the same range as the normal base. Have been. The gear ratio R of the winding 13
G and the shaft diameter DG of the winding shaft 14 and the fret 10
Are also set to respective predetermined values smaller than the normal base. Therefore, the effect of the small guitar 1 described above can be obtained in the small bass 21 of the present embodiment.

The present invention is not limited to the embodiments described above, but can be implemented in various modes.
For example, the shapes of the body 2 of the small guitar 1 and the small base 21 and the types of the tailpiece 8 and the string winding 13 shown in FIGS. 1 and 8 are merely examples, and the present invention is not limited to the shape of the body. And can be applied arbitrarily. The small guitar 1 shown in FIG. 1 is an example in which the present invention is applied to an electric guitar.
The present invention is not limited to this, and can be applied to an acoustic guitar.

[0035]

As described in detail above, the small guitar and the small bass of the present invention are easy for children to play,
This has the effect of enabling a smooth transition to a normal guitar and a normal bass, respectively, in the future.

[Brief description of the drawings]

FIG. 1 is a front view of a small guitar according to an embodiment of the present invention.

FIG. 2 is a front view of the small guitar of FIG. 1 with strings removed.

FIG. 3 is a view showing a configuration of a string and a state of attachment to a string winding shaft.

FIG. 4 is a partially enlarged front view showing a pitch near an upper piece and a lower piece of a string.

FIG. 5 is a partially enlarged side view of the small guitar.

FIG. 6 is a diagram for explaining a relationship between a height of a fret and a string pressing state.

FIG. 7 is a diagram for explaining a relationship between a width of a fret and a chord length.

FIG. 8 is a front view of a small base according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Small guitar 3 Neck 13 String winding 14 String winding shaft 21 Small base TNW Neck width taper RG Gear ratio of winding DG Shaft diameter of winding shaft

Claims (4)

[Claims] 1. A small-sized guitar having a scale of 300 to 560 mm and a neck width taper of 0.029 to 0.25 mm.
033 is a small guitar. 2. A small-sized guitar having a scale of 300 to 560 mm, wherein a gear ratio of a string winding is 25 to 35 and a diameter of a string winding shaft is 3.0 to 4.0 mm. 3. A small-sized base having a scale of 500 to 660 mm and a taper of a neck width of 0.024 to 0.25 mm.
042, a small base. 4. A small-sized base having a scale of 500 to 660 mm, wherein a gear ratio of a helical winding is 35 to 45, and a diameter of a helical winding shaft is 5.0 to 6.5 mm.