A KIND OF DOUBLE-BARS VIOLIN FAMILY WITHOUT SOUND POST

Abstract

A double-bar violin family without sound post, including a resonance box, with a front plate, back plate and sidewalls, wherein: two upper bars are parallel on the front plate inner wall; two lower bars are parallel on the back plate inner wall; an upper cross groove sits on the front plate inner wall, and forms an upper cross sound tunnel on the front plate inner wall; a lower cross groove sits on the back plate inner wall, and the lower cross groove forms a lower cross sound tunnel on the back plate inner wall. This breaks the shackles of the traditional bass bar and sound post design in resonance box, eliminates sound post in resonance box, and proposes a new improved design, wherein treble register is not bright, and bass register is not sonorous and mellow enough, so the resonance box produces treble, alto, and bass registers with good timbre.

Claims

1. A kind of double-bars violin family without sound post, comprising a resonance box, which is composed of a front plate, a back plate and sidewalls, wherein; the resonance box is equipped with two upper bars, which are long-strip bar components; one side of the both upper bars is tightly fixed on the inner wall of the front plate, while the other side of the two upper bars is suspended in the resonance box relative to the back plate; the length direction of the two upper bars is consistent with the length direction of the resonance box, while in the width direction of the resonance box, the two upper bars are parallel and separated by a distance; the inner wall of the front plate is provided with a first groove and a second groove; the first groove and the second groove are arranged crosswise and connected with each other on the inner wall of the front plate, wherein the second groove is located between the two upper bars, and the length direction of the second groove is consistent with the length direction of the upper bars; the first groove spans two upper bars in the width direction of the resonance box, and forms an upper transverse sound tunnel on the inner wall of the front plate, while the second groove forms an upper longitudinal sound tunnel on the inner wall of the front plate.

2. The violin family according to claim 1, wherein: the resonance box is equipped with two lower bars, which are long-strip bar component; one side of the both lower bars is tightly fixed on the inner wall of the back plate, while the other side of the two lower bars is tightly suspended in the resonance box relative to the front plate; the length direction of the two lower bars is consistent with the length direction of the resonance box, while in the width direction of the resonance box, the two lower bars are parallel and separated by a distance; the inner wall of the back plate is provided with a third groove and a fourth groove; the third groove and the fourth groove are arranged crosswise and connected with each other on the inner wall of the back plate, wherein the fourth groove is located between the two lower bars, and the length direction of the fourth groove is consistent with the length direction of the lower bar; the third groove spans two lower bars in the width direction of the resonance box, and forms a lower transverse sound tunnel on the inner wall of the back plate, while the fourth groove forms a lower longitudinal sound tunnel on the inner wall of the back plate.

3. The violin family according to claim 1, wherein: a pillar is arranged at the intersections of the first groove and the upper bar; one end of the pillar is against the bottom of the first groove and the other end is against the upper bar.

4. The violin family according to claim 2, wherein: the upper bar is provided with an upper bridge opening, which is a breach on one side of the upper bar and makes the upper bar form an upper bridge-style bar structure, and the upper bridge opening is erected on the first groove; the lower bar is provided with a lower bridge opening, which is a breach on one side of the lower bar and makes the lower bar form a lower bridge-style bar structure, and the lower bridge opening is erected on the third groove.

5. The violin family according to claim 2, wherein; an upper reinforcing plate is fixed between the two upper bars, and a lower reinforcing plate is fixed between the two lower bars.

6. The violin family according to claim 1, wherein: the length of the first groove is less than the length of the front plate at the corresponding position of the first groove, and a smooth transition surface is arranged between the two ends of the first groove and the inner wall of the front plate; the length of the second groove is less than the length of the front plate at the corresponding position of the second groove, and a smooth transition surface is arranged between the two ends of the second groove and the inner wall of the front plate.

7. The violin family according to claim 2, wherein: the length of the third groove is less than the length of the back plate at the corresponding position of the third groove, and a smooth transition surface is arranged between the two ends of the third groove and the inner wall of the back plate; the length of the fourth groove is less than the length of the back plate at the corresponding position of the fourth groove, and a smooth transition surface is arranged between the two ends of the fourth groove and the inner wall of the back plate.

8. The violin family according to claim 2, wherein: the first groove, the second groove, the third groove and the fourth groove are all arc grooves.

9. The violin family according to claim 1, wherein: the two upper bars, one is located at the corresponding position of the bass foot of the bridge of violin family, and the other is located at the corresponding position of the treble foot of the bridge of violin family.

10. The violin family according to claim 2, which is wherein: from the cross section of the resonance box, the two lower bars and the two upper bars are arranged correspondingly in the upper and lower directions.

Description

IMAGE DESCRIPTION

[0027] FIG. 1 is a sectional view of an existing resonance box of violin family;

[0028] FIG. 2 is a three-dimensional view of an existing bass bar;

[0029] FIG. 3 is a sectional view of the resonance box of violin family in an embodiment of the present invention;

[0030] FIG. 4 is a three-dimensional view of two upper bridge-style bars in the resonance box of violin family in an embodiment of the present invention;

[0031] FIG. 5 is a three-dimensional view of two lower bridge-style bars in the resonance box of violin family in an embodiment of the present invention;

[0032] FIG. 6 is a main view of the inner wall of the front plate and upper bridge-style bars in the resonance box of violin family in an embodiment of the present invention;

[0033] FIG. 7 is the A-A sectional view of FIG. 6;

[0034] FIG. 8 is the B-B sectional view of FIG. 6;

[0035] FIG. 9 is a main view of the inner wall of back plate and the lower bridge-style bars in the resonance box of violin family in an embodiment of the present invention;

[0036] FIG. 10 is a sectional view of the shell of the resonance box of violin family in an embodiment of the present invention;

[0037] FIG. 11 is a main view of the inner wall of the front plate in the resonance box of violin family in an embodiment of the present invention;

[0038] FIG. 12 is a main view of the inner wall of the back plate in the resonance box of violin family in an embodiment of the present invention;

[0039] FIG. 13 is a sectional view of the resonance box in which the upper reinforcing plate is added between the upper bars and the lower reinforcing plate is added between the lower bars;

[0040] FIG. 14 is a main view of the inner wall of the front plate of the resonance box where the upper reinforcing plate is added between the upper bars;

[0041] FIG. 15 is a main view of the inner wall of the back plate of the resonance box with the lower reinforcing plate added between the lower bars.

[0042] In the above figure: 1. front plate; 2. back plate; 3. sidewalls; 4. bass bar; 5. sound post; 6. upper bar; 7. lower bar; 8. first groove; 9. second groove; 10. third groove; 11. fourth groove; 12. upper bridge opening; 13. lower bridge opening; 16. pillar; 17. upper reinforcing plate; 18. lower reinforcing plate.

Specific Implementation

[0043] The present invention is further described below in combination with the figures and embodiments:

EMBODIMENT

A Kind of Double-Bars Violin Family without Sound Post

[0044] The violin family usually consists of a resonance box, scroll, fingerboard, strings, bridge, chinrest, tailpiece, pegs and etc. Since the innovation of the invention is concentrated on the resonance box, this embodiment will focus on the structure of resonance box. Therefore, the structure of the scroll, fingerboard, strings, bridge, chinrest, tailpiece, pegs and so on can be considered to be realized by the prior art, which will not be described in detail in this embodiment.

[0045] This embodiment takes the violin resonance box as an example to further describe the structure of the resonance box: as shown in FIG. 3-12, the shell of the violin resonance box is composed of a front plate (1), a back plate (2) and sidewalls (3) (see FIG. 3 and FIG. 10).

[0046] The resonance box is equipped with two upper bars 6 and two lower bars 7 (see FIG. 3). Both upper bars 6 and lower bars 7 are long-strip bar components (see FIG. 4 and FIG. 5). The upper bar 6 is provided with an upper bridge opening 12, which is a breach on one side of the upper bar 6 and makes the upper bar 6 form an upper bridge-style bar structure, and the upper bridge opening 12 is erected on the first groove 8; the lower bar 7 is provided with a lower bridge opening 13, which is a breach on one side of the lower bar 7 and makes the lower bar 7 form a lower bridge-style bar structure, and the lower bridge opening 13 is erected on the third groove 10. One side of the both upper bars 6 is tightly fixed on the inner wall of the front plate 1, while the other side of the two upper bars 6 is suspended in the resonance box relative to the back plate 2; the length direction of the two upper bars 6 is consistent with the length direction of the resonance box, while in the width direction of the resonance box, the two upper bars 6 are parallel and separated by a distance (see FIG. 3 and FIG. 6). One side of the both lower bars 7 is tightly fixed on the inner wall of the back plate 2, while the other side of the two lower bars 7 is tightly suspended in the resonance box relative to the front plate 1; the length direction of the two lower bars 7 is consistent with the length direction of the resonance box, while in the width direction of the resonance box, the two lower bars 7 are parallel and separated by a distance (see FIG. 3 and FIG. 9);

[0047] The inner wall of the front plate 1 is provided with a first groove 8 and a second groove 9 (see FIG. 7, FIG. 8 and FIG. 11); the first groove 8 and the second groove 9 are arranged crosswise and connected with each other on the inner wall of the front plate 1 (see FIG. 11), wherein the second groove 9 is located between the two upper bars 6, and the length direction of the second groove 9 is consistent with the length direction of the upper bars 6; the first groove 8 spans two upper bars 6 in the width direction of the resonance box, and forms an upper transverse sound tunnel on the inner wall of the front plate (see FIG. 6 and FIG. 7), while the second groove 9 forms an upper longitudinal sound tunnel on the inner wall of the front plate (see FIG. 6 and FIG. 8).

[0048] A pillar 16 is arranged at the intersections of the first groove 8 and the upper bar 6; one end of the pillar 16 is against the bottom of the first groove 8 and the other end is against the upper bar 6 (see FIG. 7).

[0049] The length of the first groove 8 is less than the length of the front plate 1 at the corresponding position of the first groove 8, and a smooth transition surface is arranged between the both two ends of the first groove 8 and the inner wall of the front plate 1 (see FIG. 11); the length of the second groove 9 is less than the length of the front plate 1 at the corresponding position of the second groove 9, and a smooth transition surface is arranged between the two ends of the second groove 9 and the inner wall of the front plate (see FIG. 11).

[0050] The inner wall of the back plate 2 is provided with a third groove 10 and a fourth groove 11 (see FIG. 3 and FIG. 12); the third groove 10 and the fourth groove 11 are arranged crosswise and connected with each other on the inner wall of the back plate 2 (see FIG. 12), wherein the fourth groove 11 is located between the two lower bars 7, and the length direction of the fourth groove 11 is consistent with the length direction of the lower bar 7 (see FIG. 9); the third groove 10 spans two lower bars 7 in the width direction of the resonance box, and forms a lower transverse sound tunnel on the inner wall of the back plate 2 (see FIG. 3), while the fourth groove 11 forms a lower longitudinal sound tunnel on the inner wall of the back plate 2.

[0051] The length of the third groove 10 is less than the length of the back plate 2 at the corresponding position of the third groove 10, and a smooth transition surface is arranged between the two ends of the third groove 10 and the inner wall of the back plate (see FIG. 12); the length of the fourth groove 11 is less than the length of the back plate 2 at the corresponding position of the fourth groove 11, and a smooth transition surface is arranged between the two ends of the fourth groove 11 and the inner wall of the back plate (see FIG. 12).

[0052] The thickness of the front plate 1 and back plate 2 is a thickness gradient structure that is thick in the central area and thin around (see FIG. 3 and FIG. 7). The first groove 8, the second groove 9, the third groove 10 and the fourth groove 11 are all arc grooves (see FIG. 3 FIG. 7 and FIG. 8). Among the two upper bars 6, one is located at the corresponding position of the bass foot of the bridge of the violin, and the other is located at the corresponding position of the treble foot of the bridge of the violin (Not shown in Figures). From the cross section of the resonance box, the two lower bars 7 and the two upper bars 6 are arranged correspondingly in the upper and lower directions. The shape and size of the two upper bars 6 are the same (see FIG. 4). The shape and size of the two lower bars 7 are the same (see FIG. 5).

[0053] The following describes other embodiments and structural changes of the invention: [0054] 1. In the above embodiment, although it is an embodiment corresponding to the violin resonance box, but this invention is not limited to this. Its objects can also be viola, cello, double bass (contrabass), child violin and so on. This is easily understood and accepted by those skilled in the art. [0055] 2. In the above embodiments, the inner walls of front plate 1 and back plate 2 are provided with double-bars structures and cross grooves. However, the invention is not limited to this. The measures such as double-bars and cross grooves used on the inner wall of back plate 2 can be canceled or changed to other structural forms. It is also feasible to retain only the technical measures set on the inner wall of front plate 1, but the effect is slightly worse. For the resonance box, front plate 1 is more important than back plate 2. The reason is that the front plate 1 is equipped with bridge and strings, while the back plate 2 is not directly connected with the bridge and strings. This is easily understood by those skilled in the art. [0056] 3. In the above embodiment, the inner wall of the front plate 1 and the back plate 2 are provided with a double-bars structure. That is, there are two upper bars 6 on the front plate 1 and two lower bars 7 on the back plate 2. However, this invention is not limited to this: Two upper bars 6 can be formally changed into four upper bars 6 for parallel use. For the invention, four upper bars 6 and two upper bars 6 are different in quantity and form, but they are essentially the same. Suppose that the two outer ones of the four upper bars 6 are close to the two inner ones, which will be equivalent to the double bars. Therefore, it can be considered that this change has not brought unexpected effects and should be understood as substantive equivalence. Similarly, the double-bars structure on the back plate 2 also includes such changes. In the invention, the double-bar contains the meaning of symmetrical arrangement of even number of bars. Therefore, the symmetrical arrangement of the six-bars is also an equivalent variation of the invention. This is easily understood by those skilled in the art. [0057] 4. In the above embodiment, two upper bars 6 are parallel in the width direction of the resonance box (see FIG. 6). Two lower bars 7 are parallel (see FIG. 9). However, this invention is not limited to this. The two upper bars 6 and the two lower bars 7 do not necessarily need to be parallel, even if parallel setting is the best, which is easily understood and accepted by those skilled in the art. [0058] 5. In the above embodiment, a pillar 16 is arranged at the intersections of the first groove 8 and the upper bars 6. One end of the pillar 16 is against the bottom of the first groove 8, and the other end is against the upper bar 6. However, the present invention is not limited to this: the pillar 16 does not necessarily need to be set; a pillar 16 could also be set both between the first groove 8 and the upper bars 6 and between the third groove 10 and the lower bars 7 at the same time. This is easily understood and accepted by those skilled in the art. [0059] 6. In the above embodiment, an upper bridge opening 12 is set on the upper bar 6, and a lower bridge opening 13 is set on the lower bar 7. However, the invention is not limited to this: It could be set without the upper bridge opening 12, the lower bridge opening 13, or even only one bridge opening. This is easily understood and accepted by those skilled in the art. [0060] 7. In the above embodiment, two upper bars 6 are fixed on the inner wall of front plate 1 in parallel, and two upper bars 6 are suspended in the resonance box (see FIG. 3). However, the invention is not limited to this: The upper reinforcing plate 17 could be fixed and erected between two upper bars 6 (see FIG. 13 and FIG. 14). Similarly, in the above embodiment, two lower bars 7 are fixed on the inner wall of the back plate 2 in parallel, and two lower bars 7 are suspended in the resonance box (see FIG. 3). However, the invention is not limited to this: The lower reinforcing plate 18 could be fixed and erected between two lower bars 7 (see FIG. 13 and FIG. 15). The upper reinforcing plate 17 and the lower reinforcing plate 18 can increase the strength of the middle area of the front and back plate, especially between the upper and lower bars, and increase the load when two upper bars and two lower bars resonate. [0061] 8. In the above embodiment, the first groove 8, the second groove 9, the third groove 10 and the fourth groove 11 are arc grooves. However, the invention is not limited to this: The groove can be designed into other shapes, such as V-shaped, U-shaped, W-shaped and other concave structures. This is easily understood and accepted by those skilled in the art. [0062] 9. In the above embodiment, one upper bar 6 is located at the corresponding position of the bass foot of the bridge of violin family, and the other upper bar 6 is located at the corresponding position of the treble foot of the bridge of violin family. However, the invention is not limited to this: They can actually deviate from these positions, which can be determined according to the sound quality and timbre of the resonance box. This is easily understood and accepted by those skilled in the art. [0063] 10. In the above embodiment, from the cross section of the resonance box, two lower bars 7 and two upper bars 6 are arranged correspondingly in the upper and lower directions (see FIG. 3). However, the invention is not limited to this: They can be arranged in a misaligned way, which can be determined according to the situation when adjusting the timbre and sound quality of the resonance box. This is easily understood and accepted by those skilled in the art. [0064] 11. In the above embodiment, the shape and size of the two upper bars 6 are the same (see FIG. 4). The shape and size of the two lower bars 7 are the same (see FIG. 5). However, the invention is not limited to this: The shape and size of two upper bars 6 can be different, and the shape and size of two lower bars 7 can also be different. The details can be determined according to the situation when adjusting the timbre and sound quality of the resonance box. This is easily understood and accepted by those skilled in the art.

[0065] The above embodiments are only intended to illustrate the technical concept and features of the invention, aiming at enable those familiar with the technology to understand the contents of the invention and implement it according to it, which do not limit the scope of protection of the invention. Any equivalent changes or modifications made according to the spirit of the invention shall be covered by the scope of protection of the invention.