WO2017154662A1

WO2017154662A1 - Electric guitar

Info

Publication number: WO2017154662A1
Application number: PCT/JP2017/007715
Authority: WO
Inventors: 陽介梶屋; 清行奥山; 多一中村; 輝彦宇部; 雅広山崎
Original assignee: 株式会社セッショナブル
Priority date: 2016-03-11
Filing date: 2017-02-28
Publication date: 2017-09-14
Also published as: JPWO2017154662A1; JP6856261B2

Abstract

Provided is an electric guitar with new design, the sound of which can be improved independently from the material of wood. Employing, as a connection structure for a neck 3 and a body 2, a dovetail connection unit formed from a mortise portion 12 and a tenon portion 13 enables the neck 3 and the body 2 to be biased so as to be in close contact with each other, and firmly connected to each other due to tension of a string 5. The body 2 has a metal frame 8 having an outer frame portion 8A provided on the outer circumference of the body 2 or an inner frame portion 8B provided inside the body 2, whereby the whole of the body 2 can effectively function as a resonator of string vibration. Further, by providing a fan-shaped hole 9 from the distal end side to the center side of the body 2, the sound can be improved while the weight is reduced.

Description

Electric guitar

The present invention relates to a new design and structure of an electric guitar.

An electric guitar is a stringed instrument that converts a string vibration into an electric signal by a pickup, transmits the electric signal to an amplifier through a shield connected to a jack, and amplifies the electric signal by the amplifier to output sound from a speaker. As for electric guitars, there are historically several typical designs such as the caster cast type and the Les Paul type, and the user selects an electric guitar according to their favorite design or tone. I have chosen.

It is known that the tone that determines the value of the electric guitar is affected by the wood material used for the head, neck and body. The vibration of the string is transmitted to the body through a head and a neck that are in contact with the string, and a bridge and a tail piece that are holding members that hold the end of the string on the body side. The wooden body vibrates due to string vibration as a resonance body, but the vibration transmitted through the body is fed back to the string through the bridge and tailpiece and added to the string vibration, and the string vibration is converted into an electrical signal by the pickup. Each guitar produces a unique tone.

As described above, since the vibration fed back to the string varies depending on the material of the body through which the vibration of the string is transmitted, the wood used for the body greatly affects the tone of the electric guitar. For example, maple material has a characteristic in the high range, mahogany material has a characteristic in the mid to low range, alder material has a characteristic in the high range to the mid range, and it is known that it has a dry sound quality compared with the maple material. It has been.

By the way, since there are limits to the types of wood that can be used for electric guitars, it is difficult to differentiate the tone from existing electric guitars by changing the type of wood. For this reason, we devised wood processing methods such as electric guitars that use thermowood processed wood for heat processing, and electric guitars that make up the body from fiberboards made of wood fibers with adhesive and heat-pressed. Although electric guitars are gradually appearing on the market, there is no known one that can achieve a variety of tones beyond the material of wood.

And the problem common to the above-mentioned method of changing the tone by changing the material of the wood is that the electric guitar so far follows the typical basic design mentioned above, so that the tone is also restricted in design That is. As described above, since the body functions as a string vibration resonator that creates a unique tone color for each electric guitar, the vibration transmission in the body is naturally affected by the shape. However, the shape of the existing electric guitar is fixed to several basic designs, and no new electric guitar that attempts to realize a variety of sounds beyond the existing basic design has appeared on the market. In other words, the design is mature and its evolution has stopped.

The present invention was made against the background of the existing electric guitar as described above. The purpose is to provide an electric guitar with a new design that can improve the tone without depending on the wood material.

In order to achieve the above object, the present invention provides the following electric guitar.

The present invention relates to an electric guitar having a neck, a wooden body, and a holding member that is attached to the body and holds one end side of a string, wherein the body includes a frame that transmits string vibrations. .

According to the present invention, it is possible to realize various timbres that cannot be realized with an existing electric guitar made only of wood. That is, since the body includes a frame for transmitting string vibration, string vibration can be transmitted to the wooden body not only by the wooden body but also by the frame.

The frame can be made of a metal material. According to this, the string vibration can be effectively transmitted to the body. Specifically, a metal material having a low internal attenuation factor is preferable as the metal frame. For example, aluminum, titanium, cobalt chromium alloy, etc. can be used.

The frame can be configured to have a holding member mounting portion. According to this, since a holding member (for example, a bridge or a tail piece) that holds an end portion (for example, a ball end) of a string can be attached to the attachment portion of the frame, the string vibration can be directly transmitted to the frame. it can. Since the frame transmits vibrations to the body through the external frame part and the internal frame part, it is possible to more reliably and effectively realize a timbre change utilizing the vibration transferability of the entire body.

The frame may have an external frame portion surrounding the outer periphery of the body. In addition, the frame may have an internal frame portion disposed inside the body.

According to the present invention, it is possible to realize various timbres that cannot be realized with an existing electric guitar made only of wood. In other words, the outer frame portion surrounding the outer periphery of the body can improve the transmission of vibrations to the outer periphery of the body away from the center side of the body. That is, the outer periphery of the body is surrounded by the outer frame portion, and vibration transmission can be confined inside thereof, and vibration transmission performance on the outer periphery side of the body away from the holding member that holds the string can be enhanced. Therefore, it is possible to effectively realize a timbre change utilizing the vibration transmission of the entire body. Moreover, the internal frame part provided in the inside of the body can improve the vibration transmissibility inside the thickness of the body.

These external frame part and internal frame part can constitute a frame as having either one of them, but by making the frame having both, vibration transmission on both the outer peripheral side and the center side of the body, That is, there is an advantage that the tone color can be effectively improved by vibration transmission utilizing the entire body. The frame can reinforce the rigidity of the wooden body. Accordingly, warping generated in the body due to the tension of the string and the dry state can be suppressed.

About the said external frame part, it can comprise with the following forms, for example.
The first form is an end-like annular form that surrounds the entire outer periphery of the body except for the connecting portion with the neck.
The second form provides the body by providing a portion that wraps around the neck or the back side of the body, or an internal frame portion embedded in the body so as to bypass the connection portion with the neck. It is the endless annular form which surrounds the outer periphery.
A 3rd form is a form partially provided in the outer periphery of a body. This includes, for example, an aspect provided on the left and right side surfaces along the longitudinal direction of the body, and an aspect provided on the front end side of the body.

The inner frame portion may have a shape connected to at least two parts of the outer frame portion. According to this, since the external frame parts are connected by the internal frame part, for example, the part of the external frame part on the right side of the body and the part of the external frame part on the left side of the body are connected by the internal frame part. This makes it easier to transmit vibration from the center side of the body to the outer peripheral side, and vice versa, improving vibration transmission. As a result, it is possible to improve the vibration transmission performance of the entire body. In addition, since the different parts of the outer frame part are connected by the inner frame part, the overall rigidity of the frame against warping and twisting can be increased. Since the overall rigidity of the frame increases, the effect of reinforcing the rigidity of the wooden body also increases, so there is also an advantage that deformation of the body such as warpage caused by changes in string tension or dry state can be more effectively suppressed. .

Such an inner frame part may be any one that connects two or more parts of the outer frame part, and the number of parts may be any number. Further, the inner frame portion can be formed to extend radially from the center side of the body toward the outer periphery of the body. And the attachment part of a holding member can be provided in the center of the radial shape, and an external frame part can be provided in the outer side edge part of a radial shape.

The body may have a front plate and a back plate that sandwich and hold the frame. According to this, the timbre of the electric guitar that can be realized by the combination of the frame, the front plate and the back plate can be made more diverse than the case where the body is made of only wood, and the selection range of the timbre is widened. Can be spread. In this case, it is preferable to provide a connection part between the frame and the front or back plate. Specifically, it is better to provide a hole in the frame and provide a protrusion on the front or back plate to press fit into the hole. On the contrary, provide a protrusion on the frame and provide a hole in the front or back plate. Also good. Thereby, the adhesiveness of the front plate and the back plate with respect to the frame is increased, and the vibration transmission property between the frame and the body can be improved.

The frame can be configured to have a fitting recess into which the body is fitted. According to this, since the outer peripheral edge of the wooden body is fitted into the fitting recess of the frame, the body can be brought into close contact with the frame, and vibration transmission between the frame and the body can be improved. Further, since the outer edge of the wooden body is fitted into the fitting recess, the outer edge of the body can be protected from damage or the like.

The body may have a cut portion lacking the body so as to cut from the tip side toward the center. According to the electric guitar having this cut portion, the body can be greatly reduced in weight and thereby the tone can be improved, and further, a novel design that is different from the existing electric guitar can be realized.

In other words, it has been found that the difference in the weight of the body affects the timbre. Specifically, the lighter the weight of the body, the easier it is to produce a sound with a shorter wavelength (high frequency band). If the weight of the body is heavy, a long wavelength (low frequency band) sound tends to occur, and the tone tends to be unclear and dull. Therefore, although it is considered preferable to use light wood as a material for the body in order to produce a clear tone, it is difficult to largely change the weight of the body.

On the other hand, according to the present invention, the weight of the body can be reduced by the cut portion, so that a sound in a high frequency band is likely to be generated, and a clearer and clearer tone can be obtained. In addition, because the weight of the body is realized by a shape element that is a novel cut part that does not impair the aesthetics, it realizes a novel guitar design that is different from existing electric guitars. Can do.

It should be noted that the “cut part” is not a term meaning only a shape part obtained by cutting a material, but a term including a shape part formed without cutting the material. Therefore, a shape portion formed by any of primary processing and secondary processing of materials, such as polishing, grinding, melting, and molding of materials, is included.

The frame may have an inner peripheral frame portion along the cut portion. According to this, since the frame has the inner peripheral frame portion along the cut portion, a vibration transmission path leading from the cut portion to the outer frame portion or the inner frame portion is formed in the body, and the vibration transmission performance of the entire body is improved. Can do.

The holding member can be attached to the inner peripheral frame portion. According to this, a holding member such as a bridge or a tailpiece can be attached to the inner peripheral frame portion in the cut portion of the body, so that the end portion side of the string is located within the thickness of the body from the body surface side. It can be bent into a part. By providing such a bent portion on the string, it is possible to easily maintain the tension of the string. In addition, regarding the design of the electric guitar, it is possible to realize a novel and sophisticated design that does not exist in existing electric guitars, in which holding members that are bridges and tailpieces are arranged in the cut portion of the body. Furthermore, compared to a conventional electric guitar in which a holding member such as a bridge or a tail piece protrudes from the surface of the body, the holding member does not hit the player's hand and prevents the performance from being hindered. be able to.

The holding member has a tail holding part for fixing one end of the string inside the cut part of the body. According to this, the string can be reliably held by the tail holding part so that the string is stretched from the inside of the cut part of the body to the surface side of the body. In addition, it is possible to realize a holding member with a novel design that is not found in an electric guitar so far.

The frame may have a distal end frame portion that connects opposing portions of the inner peripheral frame portion facing each other through a cut portion on the distal end side of the body. According to this, since the inner peripheral frame portions of the frame are connected by the distal end frame portion at the distal end side of the body, a vibration transmission path is formed between the inner peripheral frame portions separated via the cut portion. Further, it is possible to improve the vibration transmission property between the front end portions of the body facing each other through the cut portion.

The present invention may have an acoustic adjustment portion attached to the cut portion. Since it has an acoustic adjustment part in the cut part, it does not have to be placed on the acoustic adjustment part on the front or back of the body, so the acoustic adjustment part is not caught in the player's hand during performance, and an electric guitar that is easy to play can do.

The cut part of the body can be a polygonal shape that becomes wider from the center side to the tip side of the body. According to this, it is possible to realize a design in which novelty is further emphasized by the polygonal cut portion which becomes wider toward the tip side of the body. As such a polygonal shape, for example, a substantially trapezoidal shape can be used. By having a trapezoidal cut part that spreads from the center side to the tip side of the body, the body becomes a double-headed shape facing the cut part, further detracting from aesthetics while emphasizing novelty No design can be realized.

The body can be configured to have an inclined surface from the front surface or the back surface toward the outer periphery. According to this, it is possible to reduce the volume by reducing the volume of the peripheral portion of the body. Therefore, it is possible to easily generate a short wavelength sound, and the tone of the electric guitar can be made clear. In addition, the slanted surface gives a design impression that looks like a Japanese sword blade, making it possible to produce a sharp and powerful design impression.

The neck and the body of the present invention can have a dovetail connecting portion as a neck joint structure.

The existing neck joint structure includes a “detachable neck” that secures the body and neck with bolts (screws), a “set neck” that adheres and fixes the body and neck, and a neck material that extends to the body end. Three types of “through neck” that adheres and fixes (wings) are known. However, since the “detachable neck” is bolted between the body and the neck, there is a problem that vibration transmission from the neck to the body is reduced by a slight gap generated between the neck and the body. Moreover, since the adhesion between the body and the neck changes depending on the strength of the bolting, there is a problem that the timbre changes due to the change in vibration transmission. Since the “set neck” is bonded and fixed, it is impossible or extremely difficult to remove the neck, and there is a problem in that the broken neck is inferior in replacement and maintenance. In addition, since an adhesive layer is interposed between the neck and the body, the vibration transmission medium is changed there. “Through neck” has the same problem as set neck.

On the other hand, in the present invention, the neck and the body are connected by the ant assembly connecting portion applying Japanese traditional Miyada carpenter technology. In an electric guitar, a tension exceeding about 5 kgf (49 N) is acting on each string, and a total tension exceeding about 40 kgf (392 N) is generally acting on a total of six strings. The electric bass is more than this, and the strings are thicker and stronger than the electric guitar, so they are stretched with greater force, and the total tension of the four strings is usually over 80 kgf (784 N). .

The above-mentioned ant assembly connecting portion uses the tension of the strings as a force for improving the adhesion between the neck and the body. The opposing surfaces of the ant groove and ant that make up the ant group are urged in the direction in which they are in close contact with each other by the action of the large tension of the strings described above, which is much larger than the bolt tightening force at the detachable neck Can be brought into close contact with. In the present invention, it is possible to connect the neck and the body with such a highly-adhesive neck joint structure, and due to the high adhesion, the transmission of vibrations input from the neck to the body can be greatly improved. .

It is not essential to use an adhesive like a set neck or through neck while achieving a strong adhesion. Therefore, if the tension of the string is released, the neck and the body can be attached and detached very easily, and even if the neck or head is damaged, it can be easily removed from the body and the replacement work can be performed easily. In addition, if there is no adhesive layer between the neck and the body, the transmission of vibration due to the adhesive layer does not occur, the transmission of vibration from the neck to the body is good, and the improvement of vibration transmission of the body The sound of the sound can be improved, and the effect of making the tone of the electric guitar clearer.

The ant assembly connecting portion can be configured to have a ant groove portion in which a groove opens on the front surface side of the body and a ant portion provided on the back surface of the neck. According to this, the ant portion is inserted along the length direction of the ant groove portion, and the side surface of the neck ant portion is perpendicular to the length direction (perpendicular to the surface of the body), and the side surface of the neck is The groove surface of the dovetail portion can be pressed and locked in a close contact state.

The ant assembly connecting portion may be configured to have a pair of locking surfaces provided on a neck and a body that come into contact with each other by tension of the string. According to this, the pair of locking surfaces provided on the body and the neck can be locked in close contact with each other by the tension of the strings. The “pair of locking surfaces” can be constituted by the groove surface of the dovetail portion and the side surface of the dovetail portion.

According to the present invention, it is possible to realize an electric guitar having a novel design that is superior to the basic design of an existing electric guitar and has an excellent acoustic surface.

Since the present invention can be realized as various electric guitars such as electric guitars and bass guitars, it is possible to bring innovation beyond the category to the design and technology of electric guitars.

The perspective view which shows the electric guitar of one Embodiment. The front view of the electric guitar of FIG. The rear view of FIG. The disassembled perspective view of the body of the electric guitar of FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. The perspective view which shows the flame | frame of the electric guitar of FIG. The perspective view of the neck and head of the electric guitar of FIG. BB sectional drawing of FIG. The front view of the tail piece of FIG. The side view which shows the attachment state of the tailpiece of FIG. The top view of the flame | frame by a modification. Explanatory drawing which shows the dovetail part by a modification.

Hereinafter, an electric guitar according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an electric guitar will be described as an example of the electric guitar 1, but the present invention can also be implemented as a bass guitar with appropriate modifications.

In the present specification and drawings, for example, as shown in FIG. 1, the longitudinal direction (front-rear direction) of the electric guitar 1 is the X direction, “+ X” is the front end side of the electric guitar 1, and “−X” is the rear end side. . Similarly, the width direction of the electric guitar 1 is the Y direction, “+ Y” is the right side, and “−Y” is the left side. The thickness direction of the electric guitar 1 is taken as the Z direction, “+ Z” is assumed to be the front side of the electric guitar 1, and “−Z” is assumed to be the back side. However, the specification of these directions does not limit the method of using the electric guitar 1 or the like.

Overall configuration of electric guitar [Figs. 1-3]:
The electric guitar 1 is stretched on the body 2 through the body 2, the neck 3 connected to the body 2, the head 4 provided on the rear end side (−X) of the neck 3, and the head 4 through the neck 3. A string 5 is provided.

Body configuration (Figs. 1-6):
The body 2 includes a front plate 6, a back plate 7 and a frame 8. The front plate 6 and the back plate 7 are fixed to the front surface 8 a and the back surface 8 b of the frame 8. As a fixing method, the frame 8 of the present embodiment has a fitting recess 8c formed on the front surface 8a and the back surface 8b, respectively, and the front plate 6 and the back plate 7 are press-fitted therein and fitted in a close contact state. It is fixed with.

In order to increase the fixing force of the front plate 6 and the back plate 7 to the frame 8, an adhesive layer may be provided on all or part of the bottom surface 8d and the side surface 8e of the fitting recess 8c. However, such an adhesive layer is different from the front plate 6, the back plate 7 and the frame 8 as a medium through which the string vibration is transmitted.

The body 2 in which the front plate 6, the back plate 7 and the frame 8 are combined has a cavity (not shown) corresponding to the thickness of the frame 8 between the front plate 6 and the back plate 7. The body 2 vibrates as a resonance body of the string vibration, thereby generating a specific vibration derived from its shape, structure, wood material, etc., and the vibration is fed back to the vibration of the string 5, and this electric guitar It will produce a unique tone.

The fan 2 is formed in the body 2 so as to gradually widen from the center side toward the tip side (+ X). This fan-shaped hole 9 constitutes the “cut portion” of the present invention.

In the peripheral portion of the body 2, an inclined surface 2 a is formed in which the plate surfaces of the front plate 6 and the back plate 7 smoothly incline from the center side of the front plate 6 and the back plate 7 toward the outer peripheral frame 8. ing. The inclined surface 2a has a shape that gradually widens from the rear end side (-X) to the front end side (+ X) of the electric guitar 1, and looks like a blade that can be seen in a Japanese sword blade. It is a design element that gives the above impression. As a result, the electric guitar 1 has a sharp and powerful design impression on the body 2 by gradually spreading the blade from the rear end side (−X) to the front end side (+ X). .

Structure of the front plate [Figs. 1, 2, 4]:
The front plate 6 is made of wood, and has a fan-shaped notch 6 a that forms a fan-shaped hole 9 on the tip side (+ X). The notch 6a is formed by lacking wood in a concave shape from the front end side to the center side of the front plate 6, whereby the pair of pointed heads 6b facing the front plate 6 via the notch 6a. Is formed. As the material of the front plate 6, wood having excellent acoustic characteristics when used as a musical instrument, such as hinoki, sen, alder, maple, china, etc., or processed wood subjected to thermowood processing or the like can be used.

Pickups

10a and 10b that convert vibrations of the strings 5 into electric signals and a bridge 11 that supports the strings 5 are attached to the surface of the front plate 6, and the strings 5 are stretched over them. Inside the body 2, electrical components such as tone control and volume control electrically connected to the

pickups

10a and 10b, jacks serving as output terminals to the amplifier, and wirings connecting them are arranged. A jack insertion port 8 f is formed on the outer peripheral surface of the frame 8.

A dovetail groove 12 for dovetailing with the neck 3 is formed at the tip of the front plate 6 on the neck 3 side as shown in FIGS. The dovetail portion 12 constitutes the “ant assembly connecting portion” of the present invention.

The dovetail groove 12 is formed such that the width W1 of the groove bottom surface 12a is wider than the width W2 of the upper opening edge 12b. Further, the dovetail groove portion 12 has a width W1 of the groove bottom surface 12a and a width W2 of the opening edge 12b that are gradually decreased from an insertion port 12c for inserting a dovetail portion 13 of the neck 3 described later to a back wall 12d on the back side in the insertion direction. It is formed to be narrow.

Back plate configuration (Figure 3):
The back plate 7 is made of wood, and, like the front plate 6, a fan-shaped cutout portion 7 a that forms a fan-shaped hole 9 is formed on the tip side (+ X), and a pair of opposed pointed heads on both sides thereof. 7b is formed. Similarly to the front plate 6, the back plate 7 is made of wood having excellent acoustic characteristics when used as a musical instrument, such as hinoki, sen, alder, maple, and china, and processed wood thereof. In addition, the material of the wood of the front board 6 and the back board 7 does not need to be the same, By changing the material of the front board 6 and the back board 7, it can be set as the electric guitar 1 of various acoustic characteristics.

Frame configuration (Figs. 1-4, 6, 10):
FIG. 6 is a perspective view of the frame 8. Various metal materials can be used as the material of the frame 8, and for example, an aluminum alloy, a titanium alloy, a cobalt chromium alloy, or the like can be used. In the case of an aluminum alloy, the machinability is good and the manufacture is easy, and the lightweight frame 8 is obtained. In the case of a titanium alloy, since it is harder and lighter than an aluminum alloy, a rigid and lightweight frame 8 can be obtained. In the case of a cobalt chrome alloy, it is a metal having higher hardness and higher mechanical strength than an aluminum alloy or a titanium alloy, so that it has excellent vibration transmission, and the tone of the electric guitar 1 can be made clearer. Therefore, it is preferable.

The frame 8 has a shape having an outer frame portion 8A, an inner frame portion 8B, an inner peripheral frame portion 8C, and a tip frame portion 8D.

The outer frame portion 8A is a portion provided on the outer periphery of the body 2 and constitutes the “external frame portion” of the present invention. Specifically, left and right side surface portions 8A1 are formed. Cutaways 8A1a and 8A1b are formed on the outer frame portion 8A of the present embodiment. That is, the cutaway 8A1a, which is a double cutaway, and protrudes relatively long, has an annular mounting hole for attaching the end of the strap with a carabiner or the like when the strap (not shown) is attached to the electric guitar 1. 8A1c is formed

The inner frame portion 8B is a portion provided inside the body 2 and constitutes the “inner frame portion” of the present invention. In the present embodiment, an erection portion 8B1 that connects between the left and right side surface portions 8A1 of the outer frame portion 8A is formed as the inner frame portion 8B.

The inner peripheral frame portion 8C is a portion provided so as to overlap the notch portion 6a of the front plate 6 and the notch portion 7a of the back plate 7. The inner peripheral frame portion 8C and the distal end frame portion 8D of the outer frame portion 8A are continuously connected to form an endless polygonal annular frame portion 8E.

The inner peripheral frame portion 8C has three side surfaces. That is, the first longitudinal side surface 8C1, the second longitudinal side surface 8C2, and the first and second longitudinal side surfaces 8C1, 8C2 extending from the center side to the distal end side (+ X) are connected to one end side of the body 2. This is the short side surface 8C3.

Among these, a plurality of control knobs 14 are attached to the second longitudinal side surface 8C2 as “acoustic adjusting portions”. In this embodiment, three control knobs 14 are attached. On the short side surface 8C3, a mounting portion 8C3a for fastening the tailpiece 15 as a “holding member” with a bolt B is formed (FIG. 10).

The front end frame portion 8D is formed between a pair of

pointed heads

6b and 7b of the front plate 6 and the back plate 7, and constitutes a part of the outer frame portion 8A. When attaching a strap (not shown) to the electric guitar 1, an attachment hole 8 D 1 for attaching the end of the strap with a carabiner or the like is formed through the front end frame portion 8 D. In the existing electric guitar, since the strap pin protrudes from the tip of the electric guitar, the posture may become unstable or the strap pin may be bent when the electric guitar is stood. However, in the present embodiment, such an inconvenience does not occur because the mounting hole 8D1 is formed at the tip and does not protrude.

The body 2 has the “cut portion” of the present invention by the inner peripheral frame portion 8C, the front end frame portion 8D, and the cutout portion 6a of the front plate 6 and the cutout portion 7a of the back plate 7 that overlap the inner peripheral frame portion 8C. Is formed. The fan-shaped hole 9 has a fan-shaped form that gradually becomes wider from the center side of the body 2 toward the front end side (+ X).

Tailpiece configuration [FIGS. 1-4, 6, 9, 10]:
A tail piece 15 as a “holding member” for fixing the end of the string 5 is attached inside the fan-shaped hole 9. The tail piece 15 is made of metal, and an aluminum alloy, a titanium alloy, a cobalt chromium alloy, or the like can be used in the same manner as the frame. Since the tail piece 15 is also in direct contact with the end of the string 5 and is directly fixed to the body 2, it is preferably formed of a material having high vibration transmission. In this respect, a cobalt chrome alloy having a particularly high hardness and a high mechanical strength is preferable, and the tone of the electric guitar 1 can be made remarkably clear. As this cobalt chromium alloy, “COBARION” (registered trademark) manufactured by Eiwa Co., Ltd. can be used.

As shown in FIGS. 9 and 10, the tail piece 15 is formed with a tail holding portion 15a and a mounting portion 15b.

The tail holding part 15a is formed in a block shape, and fixed holes 15c for a plurality of strings 5 are formed. The fixed hole 15c of the string 5 has a shape in which the hole diameter gradually decreases. When the string 5 is inserted from the front end side (+ X) of the body 2, the ball end of the string 5 is caught and is prevented from coming off. The tail holding portion 15a has a front surface curved in an arc shape in the width direction Y, and the fixing holes 15c opened there are formed in a vertically long elliptical shape, which is different from existing tail pieces. It has a novel design and exhibits a unique design impression.

The mounting portion 15b is formed in a plate shape, and an insertion hole 15d for the bolt B is formed. The tail piece 15 is detachably fixed to the frame 8 by fastening the mounting portion 15b with the bolt B along the short side surface 8C3 of the inner peripheral frame portion 8C of the frame 8.

As shown in FIG. 10, since the tail piece 15 is provided below the bridge 11 (−Z side), when the string 5 is stretched, the string is bent from the bridge 11 toward the tail piece 15, and the string The tension toward the lower side (-Z side) is applied to the end of 5 to strengthen the tension of the string 5 and maintain the tension compared to the case where the string 5 is stretched horizontally and held horizontally. Can do. As a result, the tone of the electric guitar 1 can be continuously vivid and sharp.

Neck and head configuration (Figs. 1-3, 7, 8):
In the neck 3, a thin long plate-like fingerboard 17 is attached to the surface of a long plate-like wooden neck body 16, and a metal fret 18 is attached on the fingerboard 17.

A dovetail portion 13 is formed on the tip side (+ X) of the neck body 16 as a convex portion for fixing with the body 2 and dovetail assembly (FIG. 7). The ant portion 13 and the above-mentioned ant groove portion 12 constitute the “ant assembly connecting portion” of the present invention. As shown in FIG. 8, the dovetail portion 13 of the neck body 16 has a width W4 at the lower end portion wider than a width W3 at the upper end portion.

The width W3 of the upper end portion of the dovetail portion 13 of the neck body 16 is substantially the same as the width W2 of the opening edge 12b of the dovetail portion 12 of the front plate 6. The width W4 of the lower end portion of the dovetail portion 13 is substantially the same as the width W1 of the groove bottom surface 12a of the dovetail groove portion 12 of the front plate 6.

The head 4 is a wooden member formed continuously with the neck 3, and is provided with a metal peg 19 and a peg post 20 that fix the end of the string 5.

The neck 3 and the head 4 are made of wood having excellent acoustic characteristics when used as musical instruments, such as hinoki, sen, alder, maple, and china.

How to assemble an electric guitar:
Next, a method for assembling the electric guitar 1 will be described.

First, the body 2 of the electric guitar 1 is assembled. The body 2 is attached by press-fitting the front plate 6 and the back plate 7 into the fitting recess 8 c of the frame 8. At this time, as described above, the fitting recess 8c may be provided with an adhesive layer and fixed. Note that electrical components such as a control knob 14 are attached to the frame 8.

Next, the body 2 and the neck 3 are connected. The connection is performed by inserting the dovetail part 13 of the neck 3 into the dovetail part 12 of the body 2 as follows.

That is, on the insertion opening 12c side of the dovetail groove portion 12 of the body 2, the width W2 of the opening edge 12b is substantially the same as the width W3 of the upper end portion of the dovetail portion 13 of the neck 3, and the width of the groove bottom surface 12a of the dovetail groove portion 12 W1 is substantially the same as the width W4 of the lower end portion of the ant portion 13 of the neck 3.

On the other hand, the dovetail groove portion 12 of the body 2 has a shape in which the back wall 12d side is narrower than the insertion port 12c side of the dovetail portion 13.

Therefore, at the initial stage of fitting when the dovetail portion 13 is inserted into the dovetail portion 12, the dovetail portion 13 can be smoothly inserted into the dovetail portion 12 with almost no resistance, but the insertion resistance gradually increases. And finally, the dovetail part 13 will be press-fitted into the dovetail groove part 12 by pressing the neck 3 against the insertion resistance. At this time, the tip portion of the ant portion 13 is in contact with the back wall 12d which is the back end portion of the ant groove portion 12.

After the body 2 and the neck 3 are fitted, the insertion side tip of the dovetail part 13 is in contact with the back wall 12d of the dovetail part 12, so that the neck 3 is restricted from moving in the insertion direction (+ X direction). ing. On the other hand, a strong resistance force acts on the movement in the removal direction (−X direction) due to the pressing force and frictional force between the dovetail portion 13 and the dovetail groove portion 12, but it is not possible to prevent it from coming off. The neck 3 can be extracted from the body 2.

Further, since the width W4 of the lower end portion of the dovetail portion 13 is wider than the width W2 of the opening edge 12b of the dovetail portion 12, the dovetail portion 13 is detached from the dovetail portion 12 above the surface of the front plate 6 in the fitted state. Even if it tries, the side surface 13a of the ant portion 13 is engaged with the side surface 12e of the dovetail groove portion 12 and is prevented from coming off. Therefore, the neck 3 is in a state where movement of the body 2 in the thickness direction (+ Z direction) is restricted. Further, since the bottom surface 13b of the dovetail portion 13 contacts the groove bottom surface 12a of the opposed dovetail groove portion 12, the neck 3 is also restricted from moving in the thickness direction (−Z direction) with respect to the body.

Furthermore, since the side surface 13a of the dovetail portion 13 comes into contact with the side surface 12e of the dovetail groove portion 12, the movement of the neck 3 in the left-right width direction (± Y direction) is restricted with respect to the body 2.

In the state in which the neck 3 is assembled to the body 2 as described above, the neck 3 is temporarily fixed to the body 2, and for example, even if the body 2 is not supported by holding only the neck 3, the body 2 does not fall. It will be fixed with some strength.

Next, the string 5 is stretched from the body 2 through the neck 3 to the head 4. One end side of the string 5 is fixed to the tail piece 15 of the body 2, and the other end side is fixed to the peg post 20 of the head 4.

The string 5 can be fixed to the tailpiece 15 by inserting the string 5 into the fixing hole 15c of the tailpiece 15 and locking the ball end at the end of the string 5 to the fixing hole 15c as described above.

The string 5 is fixed to the peg post 20 by passing the end of the string 5 with the ball end cut through a peg hole (not shown) of the peg post 20 and turning the peg 19 to wind the string 5 around the peg post 20. Is called.

Thus, when the string 5 is stretched from the body 2 to the head 4, the string 5 acts so as to pull them in the insertion direction in which the ant portion 13 and the ant groove portion 12 abut each other by the tension. At the same time, the side surface 13a of the ant portion 13 is urged in the contact direction against the side surface 12e of the opposing ant groove portion 12 by the tension of the string 5, and can be brought into close contact with each other with a large force by the six strings 5. As a result, the movement of the neck 3 in the removal direction (−X direction) with respect to the body 2 is restricted, and the fixing of the neck 3 to the body 2 is completed.

Electric guitar effects:
The electric guitar 1 configured as described above has the following various features in addition to those already described.

According to the electric guitar 1, since the fan-shaped hole 9 as the “cut portion” is provided in the body 2, the electric guitar 1 can be greatly reduced in weight and easily generate a sound with a short wavelength (high frequency band). As a result, the tone of the electric guitar 1 can be made clear.

In terms of design, for example, a large single fan-shaped hole 9 is formed in the body 2 unlike the light weight that gives a complicated impression to the viewer, as in the case of reducing the weight by forming many small holes in the body. By doing so, you can give a unified impression. And you can realize a novel design that is different from existing electric guitars.

The peripheral portion of the body 2 has the inclined surface 2a that smoothly inclines from the front plate 6 and the back plate 7 toward the frame 8, so that the volume of the peripheral portion of the body 2 can be reduced. As a result, the weight of the body 2 can be reduced, so that a short wavelength sound is likely to be generated, and a clear tone can be obtained. Further, in terms of design, the inclined surface 2a can provide a design impression such as a “blade pattern”, and the body 2 can provide a sharp and powerful design impression.

By constructing the body 2 with the wooden front plate 6 and the back plate 7 and the metal frame 8, the tone obtained by changing the material of these members is more than the case where the body is made of only wood. Can be a wide variety, and the range of timbre selection can be expanded.

That is, the outer frame portion 8 A of the frame 8 can improve vibration transmission performance on the outer peripheral side away from the center side of the body 2 connected to the neck 3.
Further, the inner frame portion 8 B of the frame 8 can improve the vibration transmission performance inside the body 2. In particular, since it is configured as an erection portion 8B1 that connects the side surface portions 8A1 of the outer frame portion 8A, the vibration transmission performance between the outer peripheral sides of the body 2 can be improved.
Therefore, it is possible to effectively realize improvement in timbre by vibration transmission on both the outer peripheral side and the center side of the body 2, that is, vibration transmission utilizing the entire body 2.

In particular, a vibration transmission path by two multiple closed loops is formed on the front end side (+ X) from the installation part 8B1. The first closed loop is a vibration transmission path formed by the installation portion 8B1, the left and right side surface portions 8A1 of the outer frame portion 8A, and the tip frame portion 8D. The second closed loop is a vibration transmission path formed by the inner peripheral frame portion 8C and the distal end frame portion 8D inside the second closed loop. Both the large and small vibration transmission paths are directly connected to the tailpiece 15 that directly receives string vibration. Therefore, the entire body 2 can effectively function as a string vibration resonator.

Further, a vibration transmission path from the neck 3 to the body 2 is secured on the rear end side (−X) from the erection portion 8B1 by a neck joint structure that is firmly adhered to each other, which will be described later, and the outer frame portion 8A. The upper half of the outer periphery of the body 2 is surrounded by the left and right side surfaces 8A1 until the side surface of the neck 3 is reached. This also allows the entire body 2 to function effectively as a string vibration resonator.

The frame 8 reinforces the rigidity of the wooden front plate 6 and the back plate 7 by its rigidity. Therefore, the curvature which arises in the body 2 by the tension | tensile_strength and dry state of a string can be suppressed.

The tail piece 15 on which the tension of the string 5 directly acts is not fixed to the wooden front plate 6 or the back plate 7 but is fixed to the metal frame 8. It is possible to suppress warping of the front plate 6 and the back plate 7.

The neck joint structure of the neck 3 and the body 2 allows the neck 3 and the body 5 to be firmly adhered only by the dovetail portion of the dovetail groove portion 12 and the dovetail portion 13 and the tension of the string 5. As a result, the adhesive layer and the gap between the neck 3 and the body 2 generated in the conventional electric guitar can be eliminated, and the vibration transmission from the neck 3 to the body 2 can be improved. The sound of the electric guitar 1 can be made clearer by improving the sound of the sound due to the vibration of 2.

Unlike the conventional electric guitar in which the neck 3 and the body 2 are fixed with an adhesive, the neck 3 can be easily detached from the body 2 by removing the strings 5. Therefore, even when an accident that damages the neck 3 or the head 4 occurs, it can be easily replaced and the maintainability can be improved.

Since the control knob 14 is provided inside the fan-shaped hole 9, they are not caught by the player during performance, and the electric guitar 1 can be easily played.

Since the control knob 14 and the tail piece 15 are provided inside the fan-shaped hole C, they give a refined aesthetic that has a sense of unity as compared to the conventional electric guitar exposed from the body 2 to the outside. be able to.

Modification of Embodiment [FIGS. 11 and 12]:
The present invention is not limited to the above-described embodiment, and various modifications can be made.

In the frame 8 of the above embodiment, the frame 8B1 is exemplified as the inner frame 8B. However, for example, a structure as shown in FIG. That is, the construction part 8B2 of the inner frame part 8B extends from the attachment part 8C3a of the inner peripheral frame part 8C and is connected to the constricted part 8A2 of the outer frame part 8A. Thus, according to the erection part 8B2 of the inner frame part 8B, since it is connected to the attachment part 8C3a of the tailpiece 15, the transmission of the string vibration is more effectively transmitted to the outer frame part 8A than in the above embodiment. be able to. Further, like the frame 8 of this modified example, the installation portion 8C3a of the tail piece 15 is centered, and the installation portion 8B2 and the first longitudinal side surface 8C1 and the second longitudinal side surface 8C2 of the inner peripheral frame portion 8C are extended and removed. It is a form connected to the frame portion 8A, and thereby string vibration can be efficiently transmitted to the entire body 2.

In the above embodiment, the metal material is exemplified as the material of the frame 8, but other materials such as wood and resin can be used as well as the metal material. However, the metal material is more suitable as the frame 8 for transmitting the string vibration to the body 2 because the internal damping rate is different between the metal material and wood or the like.

In the above-described embodiment, an example in which the frame 8 includes the outer frame portion 8A, the inner frame portion 8B, the inner peripheral frame portion 8C, and the tip frame portion 8D is shown. You may have.

In the above embodiment, the body 2 having the fan-shaped hole 9 is exemplified as the “cut portion”, but the fan-shaped hole 9 may be omitted. Further, the fan-shaped hole 9 as the “cut portion” may be other polygonal shape or circular shape instead of the sector shape.

In the above embodiment, an example in which the dovetail groove portion 12 is provided on the front plate 6 of the body 2 as shown in FIGS. 4 and 5 is shown. However, as shown in FIG. Here, a dovetail groove portion 12 similar to that of the above embodiment may be provided, and the front plate 6 may be provided with a dovetail recess portion 6c into which the dovetail protrusion 21 is fitted. When the dovetail groove portion 12 is provided on the front plate 6, an operation for masking the dovetail groove portion 12 is required when the front plate 6 is coated, and the work load is large. However, the modification as shown in FIG. 12 eliminates the need for masking work of the front plate 6, and does not require painting on the surface of the back plate 7 to be combined with the front plate 6. Since the side surface is hidden by the dovetail recess 6c of the front plate 6 and the top surface of the dovetail protrusion 21 is hidden when the neck 3 is inserted, it is not necessary to paint the dovetail protrusion 21 and the work load is reduced. Can do.

In the above embodiment, the dovetail groove portion 12 and the dovetail portion 13 are exemplified as the neck joint structure of the body 2 and the neck 3, but a configuration without such a dovetail connecting portion may be employed. The body 2 and the neck 3 can be fixed by bolt fastening or an adhesive.

In the above embodiment, an example in which the tailpiece 15 is fixed to the frame 8 with the bolt B has been described, but the present invention is not limited to such an aspect. A tail piece may be integrally formed on a part of the frame 8, or the tail piece 15 may be fixed to the frame 2 by welding or bonding.

In the above embodiment, an electric guitar is exemplified as the electric guitar 1, but it can be applied to various electric guitars such as a bass guitar.

DESCRIPTION OF SYMBOLS 1 Electric guitar 2 Body 2a Inclined surface 3 Neck 4 Head 5 String 6 Front plate 6a Notch 6b Pointed head 6c Concave for dovetail 7 Back plate 7a Notch 7b Pointed head 8 Frame 8A Outer frame 8A1 Side 8A1a Cutter Way 8A1b Cutter Way 8A1c Mounting Hole 8A2 Constriction 8B Inner Frame 8B1 Installation 8B2 Installation 8C Inner Frame 8C1 First Long Side 8C2 Second Long Side 8C3 Short Side 8D 3 Front Attachment 8D Hole 8E Annular frame portion 8a Front surface

8b Back surface

8c Fitting recess

8d Bottom surface 8e Side surface 8f Insertion port 9 Fan-shaped

holes

10a, 10b Pickup 11 Bridge 12 Dovetail groove portion (ant assembly connecting portion)
12a Groove bottom surface

12b Opening edge

12c Insertion slot

12d Back wall 12e Side surface (locking surface)
13 Ant part (ant group connection part)
13a Side (locking surface)
13b Bottom 14 Control knob 15 Tail piece (holding member)
15a Tail holding portion

15b Mounting portion

15c Fixing hole

15d Insertion hole 16 Neck body 17 Finger plate 18 Fret 19 Peg 20 Peg post 21 Dovetail protrusion B Bolt

Claims

Neck and
With a wooden body,
A holding member attached to the body and holding one end of the string;
In an electric guitar having
An electric guitar, wherein the body includes a frame for transmitting string vibration.
The electric guitar according to claim 1, wherein the frame is made of a metal material.
The electric guitar according to claim 1, wherein the frame has an attachment portion for the holding member.
The electric guitar according to any one of claims 1 to 3, wherein the frame includes an external frame portion surrounding an outer periphery of the body.
The electric guitar according to any one of claims 1 to 4, wherein the frame has an internal frame portion disposed inside the body.
The electric guitar according to claim 5, wherein the inner frame portion has a shape connected to at least two portions of the outer frame portion.
The electric guitar according to any one of claims 1 to 6, wherein the body has a cut portion partially lacking the body so as to be cut from the front end side toward the center.
The electric guitar according to claim 7, wherein the frame has an inner peripheral frame portion along the cut portion.
The electric guitar according to claim 8, wherein the holding member is attached to the inner peripheral frame portion.
10. The electric guitar according to claim 8, wherein the frame includes a front end frame portion that connects opposing portions of the inner peripheral frame portion facing each other through the cut portion on a front end side of the body.
The electric guitar according to any one of claims 7 to 10, further comprising an acoustic adjustment portion attached to the cut portion.
The electric guitar according to any one of claims 1 to 11, wherein the neck and the body have a dovetail connecting portion as a neck joint structure.
The electric guitar according to claim 12, wherein the dovetail connection portion includes a dovetail groove portion having a groove opening on a front surface side of the body and a dovetail portion provided on a back surface of the neck.
14. The electric guitar according to claim 12, wherein the dovetail connection portion includes a pair of locking surfaces provided on the neck and the body that are in contact with each other by tension of the string.