Electric guitar body structure and electric guitar

Abstract

To control an acoustic phenomenon of a body of an electric guitar having a plurality of chambers.SOLUTION: A body structure 2 of an electric guitar includes a body 20 having first chambers 24 and second chambers 24, which are formed to be spaced away from each other, and slits 25 connecting the first chambers 24 and the second chambers 24, and includes sound absorption materials stored in the slits 25.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an electric guitar body structure and an electric guitar. [Background technology]

[0002] Patent Document 1 discloses a technique for producing a beautiful, resonant sound by providing multiple grooves on the inside of the trunk plate of a hollow body of a stringed instrument such as an acoustic guitar or violin. A beautiful, resonant sound is obtained by appropriately controlling the acoustic phenomenon of the body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-154662 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, some electric guitars and other instruments have a body with multiple chambers (cavities) for weight reduction inside. However, if multiple chambers of approximately the same volume exist in this type of body, the resonance frequencies of the multiple chambers will be approximately the same, making it necessary to control the acoustic phenomenon of the body. Even if multiple grooves are provided on the inner surface of the chamber of an electric guitar body as in Patent Document 1, it is difficult to control the acoustic phenomenon of the body.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide an electric guitar body structure that can control the acoustic phenomenon of a body having multiple chambers, and an electric guitar equipped with the same. [Means for solving the problem]

[0006] A first aspect of the present invention is a body structure of an electric guitar, comprising a body having a first chamber and a second chamber formed with a gap between them, and a slit connecting the first chamber and the second chamber, and having a sound-absorbing material stored in the slit.

[0008] A third aspect of the present invention is an electric guitar including the body structure described above. Effect of the Invention

[0009] The present invention allows for control of the acoustic phenomena of a multi-chambered electric guitar body. [Brief description of the drawings]

[0010] [Figure 1] 1 is a plan view of an electric guitar according to an embodiment of the present invention, viewed from the front side of the body. [Diagram 2] 2 is a plan view of a back member constituting the body of the electric guitar of FIG. 1, as viewed from the front side. FIG. [Diagram 3] FIG. 3 is an enlarged perspective view showing two chambers and a slit in the back member of FIG. 2. [Figure 4] FIG. 11 is an enlarged plan view showing a main portion of a body of an electric guitar according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, one embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, an electric guitar 1 according to this embodiment includes a body structure 2, a neck 3, and strings 4. The neck 3 is connected to an end of the body structure 2 and extends in a direction away from the body structure 2 (upward in FIG. 1). A head 5, which forms the end of the neck 3 in the longitudinal direction, is provided with a peg 6 around which an end of a string 4 is wound. The string 4 is stretched along the longitudinal direction of the neck 3.

[0012] 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, and the like are attached to the body 20. The bridge 7, the electromagnetic pickup 8, and the controller are exposed on a front surface 20a (hereinafter referred to as the front surface 20a) of the body 20 that faces in the thickness direction of the body 20 (a direction perpendicular to the paper surface in FIG. 1). One end of the string 4 is fastened to the bridge 7. The electromagnetic pickup 8 is located between the neck 3 and the bridge 7 in the longitudinal direction of the neck 3. Multiple electromagnetic pickups 8 (two in the illustrated example) are lined up in the longitudinal direction of the neck 3. The controller adjusts the volume, tone, etc. of the acoustic signal output from the electromagnetic pickup 8. The controller includes two volume switches 9, a pickup selector 10 that switches which electromagnetic pickup 8 is enabled, and the like.

[0013] The body 20 of this embodiment has a top member 21 having a small thickness and a back member 22 (see Figs. 2 and 3) having a thickness greater than that of the top member 21. The top member 21 and the back member 22 overlap in the thickness direction of the body 20 to form the body 20. The front surface 20a of the body 20, where the bridge 7 and the like are exposed, is formed by the top member 21.

[0014] As shown in FIGS. 2 and 3, the body 20 has a plurality of chambers 24 (19 in the illustrated example) and a slit 25. The multiple chambers 24 are cavities formed to reduce the weight of the body 20. The multiple chambers 24 are formed at intervals from one another. Specifically, the multiple chambers 24 are lined up in a direction perpendicular to the thickness direction of the body 20. When viewed from the thickness direction of the body 20, the multiple chambers 24 are formed in an area of ​​the body 20 other than the area where the neck 3, bridge 7, electromagnetic pickup 8, controller (see FIG. 1), etc. are attached. Although not shown in FIG. 2, the body 20 also has holes and recesses for accommodating the bridge 7, electromagnetic pickup 8, and controller.

[0015] In this embodiment, the multiple chambers 24 are each formed by being recessed from the front surface 22a of the back member 22 facing the top member 21. By overlapping the top member 21 on the front surface 22a of the back member 22, each of the multiple chambers 24 becomes a cavity that is not open to the outside of the body 20.

[0016] The slit 25 connects two adjacent chambers 24 (the first chamber 24A and the second chamber 24B) among the plurality of chambers 24. The slit 25, like the chambers 24, does not open to the outside of the body 20. The slit 25 extends in the arrangement direction of the two chambers 24. The direction in which the slit 25 extends may be parallel to the arrangement direction of the two chambers 24 or may be inclined with respect to the arrangement direction of the two chambers 24.

[0017] The cross-sectional area of ​​the slit 25 perpendicular to the arrangement direction of the two chambers 24 is smaller than each of the cross-sectional areas of the two chambers 24 perpendicular 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 may be, for example, the cross-sectional area of ​​the chamber 24 that is maximum in the arrangement direction of the two chambers 24. The volume of the slit 25 is sufficiently small compared with the respective volumes of the two chambers 24 .

[0018] The number of slits 25 connecting two chambers 24 may be one or two or more (plural). When the number of slits 25 is plural, the total cross-sectional area of ​​the plurality of slits 25 is smaller than each cross-sectional area of ​​the two chambers 24. In addition, the total volume of the plurality of slits 25 is sufficiently smaller than each volume of the two chambers 24.

[0019] The slit 25 of this embodiment is formed recessed from the front surface 22a of the back member 22, similar to the chamber 24. In Fig. 3, the depth dimension of the slit 25 is the same as the depth dimension of the chamber 24, but it may be, for example, smaller than the depth dimension of the chamber 24. In addition, the slit 25 may be formed so as not to open to the front surface 22a of the back member 22, for example.

[0020] The volumes of the two chambers 24 (the first chamber 24 and the second chamber 24) connected to each other by the slit 25 may be, for example, approximately the same. The volumes of the two chambers 24 being approximately the same means, for example, that the ratio of the volume of the second chamber 24 to the volume of the first chamber 24 is 70% or more and 130% or less.

[0021] The two chambers 24 are connected to each other by the slit 25, thereby forming a new chamber 26 (hereinafter referred to as a composite chamber 26) that includes the two chambers 24 and the slit 25. The volume of the composite chamber 26 is larger than the volume of each of the two chambers 24.

[0022] The above-mentioned chamber 24 and slit 25 will now be described in more detail. 2, the 19 chambers 24 (24A to 24S) are arranged generally along the edge of the back member 22 when viewed from the front surface 22a side. In the following description, the chambers are numbered 1, 2, ..., 18, 19 in order generally clockwise from chamber 24A located at the top right of the back member 22 (body 20) to chamber 24S located at the top left.

[0023] The first and second chambers 24A, 24B located in the upper right portion of the back member 22 (body 20) in FIG. 2 are connected by two slits 25Aa, 25Ab as shown in FIG. 2 and FIG. 3. This forms a composite chamber 26A including the first and second chambers 24A, 24B and the two slits 25Aa, 25Ab. The two slits 25Aa, 25Ab are arranged in a width direction perpendicular to the arrangement direction of the first and second chambers 24A, 24B and the thickness direction of the back member 22 (body 20). The two slits 25Aa, 25Ab are located at both ends of the first and second chambers 24A, 24B in the width direction.

[0024] As shown in FIG. 2, the embodiment in which chambers 24F, 24G, number 6, are connected with slit 25F to form composite chamber 26F, the embodiment in which chambers 24L, 24M, number 12, and 13, are connected with slit 25L to form composite chamber 26L, the embodiment in which chambers 24O, 24P, number 15, and 16, are connected with slit 25O to form composite chamber 26O, and the embodiment in which chambers 24R, 24S, number 18, and 19, respectively, are connected with slit 25R to form composite chamber 26R are all the same as the embodiment in which chambers 24A, 24B, number 1, and 2, respectively, are connected with slits 25Aa, 25Ab to form composite chamber 26A.

[0025] The third and fourth chambers 24C, 24D are connected by one slit 25C. This forms a composite chamber 26C including the third and fourth chambers 24C, 24D and one slit 25C. The one slit 25C is located midway between the third and fourth chambers 24C, 24D in the width direction perpendicular to the arrangement direction of the third and fourth chambers 24C, 24D and the thickness direction of the back member 22 (body 20). The slit 25C may be located at the end of the third and fourth chambers 24C, 24D in the width direction, for example.

[0026] The tenth chamber 24J is connected to the ninth chamber 24I and the eleventh chamber 24K located on both sides thereof by the slits 25I and 25J, respectively. That is, the three chambers 24I to 24K, numbered 9 to 11, are connected by the slits 25I and 25J. As a result, a composite chamber 26I including the ninth to eleventh chambers 24I to 24K and the slits 25I and 25J is formed. The mode in which the ninth and tenth chambers 24I and 24J are connected by the slit 25I and the mode in which the tenth and eleventh chambers 24J and 24K are connected by the slit 25J are both the same as the mode in which the first and second chambers 24A and 24B are connected by the slits 25Aa and 25Ab.

[0027] The fifth, eighth, fourteenth and seventeenth chambers 24E, 24H, 24N and 24Q are not connected to the other chambers 24.

[0028] As described above, according to the body structure 2 of the present embodiment and the electric guitar 1 including the same, by connecting the two chambers 24 with the slit 25, the volume of the composite chamber 26 including the two chambers 24 and the slit 25 becomes larger than the volume of each of the two chambers 24. Accordingly, the resonance frequency of the composite chamber 26 becomes lower than the resonance frequency of each of the two chambers 24. That is, by controlling the volumes of the chambers 24, 26, the resonance frequencies of the multiple chambers 24, 26 formed in the body 20 can be made different from each other. For example, the resonance frequencies of two chambers 24 with approximately the same volume are approximately equal, but by connecting these two chambers 24 with the slit 25, the number of chambers 24 having approximately equal resonance frequencies can be reduced. This makes it possible to control the acoustic phenomenon of the body 20. Therefore, even if the body 20 of the electric guitar 1 has a plurality of weight-reducing chambers 24, it is possible to produce a beautiful, resonant sound.

[0029] In the body structure 2 of this embodiment, the cross-sectional area of ​​the slit 25 connecting the two chambers 24 is smaller than each of the cross-sectional areas of the two chambers 24. This makes it possible to ensure a large-volume chamber (i.e., the composite chamber 26) while suppressing a decrease in the rigidity of the body 20.

[0030] In the body structure 2 of this embodiment, the resonance frequency of the composite chamber 26 including 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 makes it possible to control the acoustic phenomenon of the body 20.

[0031] Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0032] In the present invention, the body structure 2 may have a sound absorbing material 27 housed in the slit 25, as shown in Fig. 4, for example. The sound absorbing material 27 is a member that absorbs sound, such as urethane foam. In such a configuration, the resonance frequency of the composite chamber 26 including the two chambers 24 and the slit 25 connecting them can be controlled by the sound absorbing material 27. This makes it possible to control the acoustic phenomenon of the body 20.

[0033] In the present invention, the cross-sectional area of ​​the slit 25 may be, for example, the same as each of the cross-sectional areas of the two chambers 24 . [Explanation of symbols]

[0034] 1...electric guitar, 2...body structure, 20...body, 24...chamber, 25...slit, 27...sound-absorbing material

Claims

1. A body having a first chamber and a second chamber spaced apart from each other, and a slit connecting the first chamber and the second chamber; An electric guitar body structure having a sound absorbing material housed in the slit.

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

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

4. The body has a top member and a back member that overlap each other in a thickness direction of the body to form the body, 4. The electric guitar body structure according to claim 1, wherein a thickness dimension of the back member is greater than a thickness dimension of the top member.

5. the first chamber is a first recess recessed from a front surface of the back member facing the top member; 5. The electric guitar body structure according to claim 4, wherein the second chamber is a second recess recessed from a front surface of the back member facing the top member.

6. 6. The electric guitar body structure according to claim 5, wherein the slit is a third recess recessed from a front surface of the back member facing the top member.

7. 7. The electric guitar body structure according to claim 6, wherein a depth dimension of the third recess is the same as a depth dimension of the first recess and a depth dimension of the second recess.

8. 7. The electric guitar body structure according to claim 6, wherein a depth dimension of the third recess is smaller than a depth dimension of the first recess and a depth dimension of the second recess.

9. 9. The electric guitar body structure according to claim 5, wherein a non-recessed portion that is not recessed from a front surface of the back member is provided between the first recess and the second recess.

10. The slits include a first slit and a second slit spaced apart from the first slit, The electric guitar body structure of claim 9 , wherein the non-recessed portion is disposed between the first slit and the second slit.

11. An electric guitar comprising the body structure according to any one of claims 1 to 10.

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