Body structure of electric guitar and electric guitar

Abstract

An electric guitar body structure has a body having a first chamber and a second chamber formed at a distance from each other, and a slit connecting the first chamber and the second chamber.

Description

Technical Field

[0001] This invention relates to a body structure for an electric guitar and an electric guitar.

[0002] This application claims priority based on Japanese Patent Application No. 2019-220464 filed on December 5, 2019, the contents of which are incorporated herein by reference. Background Technology

[0003] Patent Document 1 discloses a technique in which multiple slots are provided inside the mainboard within the hollow body of stringed instruments such as acoustic guitars and violins, thereby enabling the production of beautifully resonant sounds. These beautifully resonant sounds can be achieved by appropriately controlling the acoustic phenomena (sound effects) of the instrument body.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2001-154662 Summary of the Invention

[0005] However, the bodies of instruments such as electric guitars sometimes have multiple lightweight chambers (cavities) inside. However, if multiple chambers of roughly the same volume exist within such a body, their resonant frequencies will become approximately equal, thus requiring control of the body's acoustic phenomena. Furthermore, even with multiple grooves on the inner surface of the chambers in an electric guitar body, as in Patent Document 1, it is difficult to control the body's acoustic phenomena.

[0006] The present invention was made in view of the above circumstances, and its object is to provide an electric guitar body structure capable of controlling the acoustic phenomena of a body having multiple chambers, and an electric guitar having the same.

[0007] The first aspect of the present invention is a body structure of an electric guitar, the body structure having a body having: a first chamber and a second chamber formed by being spaced apart from each other; and a slit connecting the first chamber and the second chamber.

[0008] The second aspect of the invention is an electric guitar having the aforementioned body structure.

[0009] The effects of the invention

[0010] According to the present invention, it is possible to control the acoustic phenomena of the body of an electric guitar having multiple chambers. Attached Figure Description

[0011] Figure 1 This is a top view of an electric guitar according to an embodiment of the present invention, viewed from the front surface of the guitar body.

[0012] Figure 2 The structure is viewed from the front surface side. Figure 1A top view of the back of the body of an electric guitar.

[0013] Figure 3 It means Figure 2 An enlarged oblique view of the two chambers and slits of the rear component.

[0014] Figure 4 This is an enlarged top view showing the main part of the body of an electric guitar according to other embodiments of the present invention. Detailed Implementation

[0015] The following is for reference Figures 1-3 One embodiment of the present invention will be described.

[0016] like Figure 1 As shown, the electric guitar 1 involved in this embodiment has a body structure 2, a neck 3, and strings 4.

[0017] The neck 3 is connected to the end of the body structure 2, along the direction away from the body structure 2 (in Figure 1 The neck 3 extends in the middle and upward direction. A peg 6 is provided at the head 5, the front end of the neck 3, for winding the end of the string 4. The string 4 is taut along the length of the neck 3.

[0018] The body structure 2 includes a body 20. In this embodiment, the body 20 constitutes the entire body structure 2. A bridge 7, an electromagnetic pickup 8, a controller, etc., are mounted on the body 20. The bridge 7, electromagnetic pickup 8, and controller are positioned along the thickness direction of the body 20 (in... Figure 1 The front surface 20a (hereinafter referred to as the front surface 20a) of the body 20 (in the direction perpendicular to the paper) is exposed.

[0019] One end of the string 4 is fixed to the bridge 7. Electromagnetic pickups 8 are located between the neck 3 and the bridge 7 along the length of the neck 3. Multiple electromagnetic pickups 8 are arranged along the length of the neck 3 (two in the example shown). A controller adjusts the volume, pitch, etc., of the acoustic signal output from the electromagnetic pickups 8. The controller includes two volume switches 9, a pickup selector 10 that switches between active electromagnetic pickups 8, etc.

[0020] The body 20 of this embodiment has: a top part 21 with a small thickness and a back part 22 with a larger thickness compared to the top part 21 (see reference). Figure 2 , 3 The upper component 21 and the back component 22 are overlapped in the thickness direction of the body 20 to form the body 20. The front surface 20a of the body 20 exposed by the bridge 7, etc., is formed by the upper component 21.

[0021] like Figure 2, 3 As shown, the body 20 has multiple (19 in the example) chambers 24 and slits 25.

[0022] Multiple chambers 24 are cavities formed to reduce the weight of the body 20. These multiple chambers 24 are spaced apart from each other. Specifically, the multiple chambers 24 are arranged in a direction orthogonal to the thickness direction of the body 20. When viewed from the thickness direction of the body 20, the multiple chambers 24 form the space within the body 20 where the neck 3, bridge 7, electromagnetic pickup 8, and controller (see reference) are installed. Figure 1 Areas outside of areas such as ) etc. In Figure 2 Although not shown in the figure, holes or recesses are formed on the body 20 for accommodating the bridge 7, electromagnetic pickup 8, and controller.

[0023] In this embodiment, a plurality of chambers 24 are recessed from the front surface 22a of the back component 22, which is opposite to the upper component 21. The plurality of chambers 24 are each cavity that does not open to the outside of the body 20 by overlapping the upper component 21 with the front surface 22a of the back component 22.

[0024] The slit 25 connects two adjacent chambers 24 (first chamber 24A and second chamber 24B) of the plurality of chambers 24. Like the chambers 24, the slit 25 does not open to the outside of the body 20.

[0025] The slit 25 extends along the arrangement direction of the two chambers 24. The direction in which the slit 25 extends can be parallel or inclined relative to the arrangement direction of the two chambers 24.

[0026] The cross-sectional area of ​​the slit 25 orthogonal to the arrangement direction of the two chambers 24 is smaller than the cross-sectional area of ​​each of the two chambers 24 orthogonal to the arrangement direction of the two chambers 24. The cross-sectional area of ​​each chamber 24 used for comparison with the cross-sectional area of ​​the slit 25 can, for example, be the cross-sectional area of ​​the largest chamber 24 in the arrangement direction of the two chambers 24.

[0027] The volume of slit 25 is sufficiently small compared to the volumes of the two chambers 24.

[0028] The number of slits 25 connecting the two chambers 24 can be one or more. When there are multiple slits 25, the total cross-sectional area of ​​the multiple slits 25 is less than the cross-sectional area of ​​each of the two chambers 24. In addition, the total volume of the multiple slits 25 is sufficiently small compared to the volume of each of the two chambers 24.

[0029] In this embodiment, the slit 25, like the chamber 24, is formed recessed from the front surface 22a of the rear component 22. Figure 3In this case, the depth dimension of the slit 25 is the same as the depth dimension of the chamber 24, but it may be smaller than the depth dimension of the chamber 24, for example. In addition, the slit 25 is formed, for example, in a manner that does not open the front surface 22a of the back part 22.

[0030] The volumes of the two chambers 24 (first chamber 24 and second chamber 24) connected by the slit 25 can be approximately the same, for example. For example, the volume ratio of the second chamber 24 to the first chamber 24 is 70% or more and 130% or less.

[0031] Two chambers 24 are interconnected by a slit 25, thereby forming a new chamber 26 (hereinafter referred to as the composite chamber 26) that includes the two chambers 24 and the slit 25. The volume of the composite chamber 26 is greater than the volume of each of the two chambers 24.

[0032] The chamber 24 and slit 25 described above will be explained in more detail.

[0033] like Figure 2 As shown, the 19 chambers 24 (24A to 24S) are arranged roughly along the edge of the back part 22 as viewed from the front surface 22a side. In the following description, the chambers 24A located on the upper right of the back part 22 (body 20) to 24S located on the upper left are numbered 1, 2, ..., 18, 19 in a clockwise direction.

[0034] exist Figure 2 In the middle, chambers 24A and 24B, located on the upper right side of the rear component 22 (body 20), are as follows: Figure 2 , 3 As shown, they are connected by two slits 25Aa and 25Ab. This forms a composite chamber 26A containing chambers 24A and 24B (numbers 1 and 2) and the two slits 25Aa and 25Ab. The two slits 25Aa and 25Ab are arranged in a width direction orthogonal to the arrangement direction of chambers 24A and 24B (numbers 1 and 2) and the thickness direction of the back component 22 (body 20). Furthermore, the two slits 25Aa and 25Ab are located at both ends of chambers 24A and 24B (numbers 1 and 2) in the width direction.

[0035] like Figure 2As shown, the method of connecting chambers 24F and 24G of No. 6 and No. 7 with slit 25F to form composite chamber 26F, the method of connecting chambers 24L and 24M of No. 12 and No. 13 with slit 25L to form composite chamber 26L, the method of connecting chambers 24O and 24P of No. 15 and No. 16 with slit 25O to form composite chamber 26O, and the method of connecting chambers 24R and 24S of No. 18 and No. 19 with slit 25R to form composite chamber 26R are all the same as the method of connecting chambers 24A and 24B of No. 1 and No. 2 with slits 25Aa and 25Ab to form composite chamber 26A.

[0036] Chambers 24C and 24D, numbered 3 and 4, are connected by a slit 25C. This forms a composite chamber 26C comprising chambers 24C and 24D, numbered 3 and 4, and a slit 25C. The slit 25C is located in the middle of chambers 24C and 24D in a width direction orthogonal to the arrangement direction of chambers 24C and 24D and the thickness direction of the back panel 22 (body 20). Alternatively, the slit 25C may be located at the ends of chambers 24C and 24D in the width direction.

[0037] Chamber 24J of number 10 is connected to chambers 24I of number 9 and 24K of number 11 via slits 25I and 25J, respectively. That is, chambers 24I to 24K of numbers 9 to 11 are connected via slits 25I and 25J. This forms a composite chamber 26I containing chambers 24I to 24K of numbers 9 to 11 and slits 25I and 25J. The method of connecting chambers 24I, 2, and J of numbers 9 and 10 via slit 25I, and the method of connecting chambers 24J and 24K of numbers 10 and 11 via slit 25J, are the same as the method of connecting chambers 24A and 24B of numbers 1 and 2 via slits 25Aa and 25Ab.

[0038] Chambers 24E, 24H, 24N, and 24Q in chambers 5, 8, 14, and 17 are not connected to other chambers 24.

[0039] As described above, according to the body structure 2 and the electric guitar 1 having the body structure 2 of this embodiment, the two chambers 24 are connected by a slit 25, thereby making the volume of the composite chamber 26, which includes the two chambers 24 and the slit 25, larger than the individual volumes of the two chambers 24. Consequently, the resonant frequency of the composite chamber 26 is lower than the individual resonant frequencies of the two chambers 24. That is, the volumes of the chambers 24 and 26 can be controlled so that the resonant frequencies of the multiple chambers 24 and 26 formed in the body 20 are different from each other. For example, two chambers 24 with approximately the same volume may have approximately equal resonant frequencies, but by connecting these two chambers 24 by the slit 25, the number of chambers 24 with approximately equal resonant frequencies can be reduced.

[0040] Therefore, the acoustic phenomena of the guitar body 20 can be controlled. Thus, even the guitar body 20 of an electric guitar 1 with multiple chambers 24 for lightweighting can produce a beautiful sound.

[0041] Furthermore, in the body structure 2 of this embodiment, the cross-sectional area of ​​the slit 25 connecting the two chambers 24 is smaller than the cross-sectional area of ​​each of the two chambers 24. As a result, it is possible to suppress the reduction of rigidity of the body 20 and ensure a large volume of chambers (i.e., composite chambers 26).

[0042] Furthermore, in the instrument body structure 2 of this embodiment, the resonant frequency of the composite chamber 26 containing the two chambers 24 and the slits 25 can be controlled by appropriately changing the number of slits 25 connecting the two chambers 24. This allows for control of the acoustic phenomena of the instrument body 20.

[0043] The present invention has been described in detail above, but the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0044] In this invention, the body structure 2 can also be, for example, as shown in the example... Figure 4 The diagram shows a sound-absorbing element 27 housed within the slit 25. The sound-absorbing element 27 is, for example, a sound-absorbing component such as polyurethane foam. In this structure, the resonant frequency of the composite chamber 26, which contains two chambers 24 and the slit 25 connecting them, can be controlled by the sound-absorbing element 27. This allows for control of the acoustic phenomena of the instrument body 20.

[0045] In this invention, the cross-sectional area of ​​the slit 25 may, for example, be the same as the cross-sectional area of ​​each of the two chambers 24.

[0046] Industrial applicability

[0047] This invention can be applied to electric guitars, particularly to the body of an electric guitar. According to this invention, the acoustic phenomena of the body of an electric guitar with multiple chambers can be controlled.

[0048] Explanation of the label

[0049] 1 Electric Guitar

[0050] 2. Body Structure

[0051] 20. Body of the instrument

[0052] 24 chambers

[0053] 25 Slits

[0054] 27 sound absorbing parts

Claims

1. A body structure for an electric guitar, It has a body, which includes: a first chamber and a second chamber spaced apart from each other; and a slit connecting the first chamber and the second chamber. The instrument body has multiple slits. The first chamber and the second chamber are connected by a plurality of the slits.

2. The body structure of the electric guitar according to claim 1, wherein, The cross-sectional area of ​​the slit orthogonal to the arrangement direction of the first chamber and the second chamber is smaller than the cross-sectional area of ​​the first chamber and the second chamber orthogonal to the arrangement direction.

3. The body structure of the electric guitar according to claim 1 or 2, wherein, The volume of the second chamber is more than 70% and less than 130% of the volume of the first chamber.

4. The body structure of the electric guitar according to claim 1, wherein, The combined cross-sectional area of ​​the plurality of slits is less than the cross-sectional area of ​​the first chamber or the second chamber.

5. The body structure of the electric guitar according to claim 1 or 2, wherein, It has a sound-absorbing element housed within the slit.

6. A body structure for an electric guitar, It has a body, which includes: a first chamber and a second chamber spaced apart from each other; and a slit connecting the first chamber and the second chamber. The body of the instrument is formed by a top component and a back component having a front surface. When viewed from the thickness direction of the instrument body, the first chamber and the second chamber are formed in the rear component in areas other than those where the neck, bridge, electromagnetic pickup, and controller are mounted on the instrument body. The upper component is overlapped on the front surface of the back component such that the first chamber, the second chamber, and the slit do not open to the outside of the instrument body.

7. The body structure of the electric guitar according to claim 6, wherein, The cross-sectional area of ​​the slit orthogonal to the arrangement direction of the first chamber and the second chamber is smaller than the cross-sectional area of ​​the first chamber and the second chamber orthogonal to the arrangement direction.

8. The body structure of the electric guitar according to claim 6 or 7, wherein, The volume of the second chamber is more than 70% and less than 130% of the volume of the first chamber.

9. The body structure of the electric guitar according to claim 6 or 7, wherein, The instrument body has multiple of the aforementioned slits.

10. The body structure of the electric guitar according to claim 6 or 7, wherein, It has a sound-absorbing element housed within the slit.

11. An electric guitar having the body structure as described in any one of claims 1 to 10.

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