JP6421289B1 - Electric guitar body structure with improved acoustic characteristics - Google Patents

Abstract

An object of the present invention is to closely fix a metal plate having a constant weight to the back surface of a body, thereby suppressing vibration of the body and lengthening string vibration to improve damping characteristics and extending sound sources of fundamental and overtones. The purpose is to improve the acoustic characteristics. In a body 4 structure of an electric guitar 1, an aluminum flat plate 8 having a width equivalent to the longitudinal dimension of a bridge 5 is closely fixed with a screw 9 at the center in the width direction of the back of the body 4 to be convex. The electric guitar body structure is characterized by forming and improving the acoustic characteristics of the fundamental and overtones. [Selection] Figure 1

Description

The present invention relates to a body structure of an electric guitar that converts a string vibration into an electric signal and produces sound from a speaker.

As an electric guitar, a solid body guitar having a solid body structure is known. In the solid type, the body is processed and formed into a required shape with a piece of wood.

As described in Patent Document 1, the solid-type electric guitar has an entire fitting groove at the center in the width direction on the back of the body body in order to improve the ease of manufacturing the body structure and the performance of the performer. An electric guitar body structure is disclosed in which the base portion of the neck body is fitted into the fitting groove and fixed with a bolt.

Moreover, as described in Patent Document 2, a guitar display device comprising a layered member of a plate made of a plate and a polyethylene foam, an arm and a connecting member on the back surface of the body. The body structure is disclosed.

JP 2003-330466 A JP2015-200899A

Improvements in conventional electric guitars are mainly aimed at improving manufacturability and performance, and are not intended to improve acoustic characteristics.

The electric instrument sound of an electric guitar is not the sound that comes out from the hand, but the string vibrates when you play the string, picks up the sound with the pickup, and the sound comes out from the guitar amplifier. The string vibrates like a bow and gradually attenuates. If a part of the energy of the string vibration is offset by the energy that vibrates the body, the elongation of the string vibration is hindered.

There is a demand for electric guitar players to keep the sustain of the fundamental and overtones obtained when playing an electric guitar as long as possible. If such acoustic characteristics can be improved, a transparent sound can be enjoyed from the high range to the low range. However, with low-priced electric guitars, it is a fact that musicians who play as hobbies cannot obtain the fundamental and harmonic sound sources as much as they want.

The present invention has been made on the basis of the above circumstances, and by fixing a metal plate having a constant weight closely to the back of the body, the vibration of the body is suppressed, the string vibration is lengthened and the damping characteristic is improved. And it aims to improve the acoustic characteristics of the extended sound source.

In the first embodiment, in the body structure of an electric guitar, an aluminum flat plate having a width equivalent to the longitudinal dimension of the bridge is formed in a convex shape by closely fixing with a screw at the center in the width direction of the back of the body. And the body structure of an electric guitar characterized by improved acoustic characteristics of overtones.

In the second embodiment, in the body structure of the electric guitar, a rectangular recess-shaped fitting groove having a width equivalent to the longitudinal dimension of the bridge is formed at the center in the width direction of the back of the body, and the longitudinal direction of the bridge An aluminum flat plate with an approximately T-shaped recessed groove formed in the center of an aluminum flat plate having a width equivalent to the size is fitted into the fitting groove and embedded in the body and fixed in close contact with the fundamental and overtone sound. It is a body structure of an electric guitar characterized by improved characteristics. In the case of an electric guitar body not provided with a tremolo unit, the above-described substantially T-shaped recess groove is not necessary.

In the electric guitar body structure according to the third embodiment, a rectangular convex portion is formed at the center of the aluminum plate of the first embodiment so as to partition a plurality of parallel tremolo springs. And the body structure of an electric guitar characterized by improved acoustic characteristics of overtones.

In the fourth embodiment, in the body structure of the electric guitar, a rectangular convex portion is formed in the groove of the substantially T-shaped concave portion of the aluminum flat plate of the second embodiment to partition between a plurality of parallel tremolo springs. The electric guitar body structure is characterized in that the acoustic characteristics of the fundamental tone and the harmonic overtone are improved.

By tightly fixing the aluminum plate to the back of the body body made of wood, the vibration of the body is suppressed, and the energy of the string vibration that was previously taken as the energy that vibrates the body appears as a sound stretch, and the fundamental and overtones The sound source remains for a long time, and the fundamental and overtones can be heard more clearly.

As a result, the sound source of the fundamental tone and the harmonic overtone from the high range to the low range obtained when playing the electric guitar is extended, and the acoustic characteristics of the stringed instrument are further improved. By adopting such a unique structure, it is easier and cheaper to modify and make new guitars, even for low-priced electric guitars, compared to purchasing expensive stringed instruments that exhibit exceptional acoustic characteristics. Can be manufactured.

It is the rear view and side view of a 1st Example of this invention. It is a perspective view with the exploded assembly drawing of the 1st Example of this invention, and a 2nd Example. It is sectional drawing which cut | disconnects and shows a part of body main body of a 1st Example and a 2nd Example. It is sectional drawing which cut | disconnects and shows a part of body main body of 3rd Example and 4th Example.

The present invention will be described based on the embodiment shown in FIGS. FIG. 1 is a rear view and a side view showing an electric guitar of a first embodiment according to the present invention, FIG. 2 is a perspective view with an exploded view of the electric guitar of the first embodiment and the second embodiment, FIG. Is a sectional view showing a part of the body body of the first embodiment and the second embodiment, and FIG. 4 is a sectional view showing a part of the body body of the third embodiment and the fourth embodiment. Show.

In the rear view of FIG. 1 (A), an electric guitar 1 is composed of a head 2, a neck 3, a body 4, and a neck joint plate 6 as in the case of a conventional solid electric guitar. FIG. 1B is a side view, and is composed of a bridge 5 having a role of fixing one end of the string 10 to the body 4 and transmitting the string vibration to the body 4, and a pickup 11 for converting the vibration of the string into an electric signal. ing.

In the present invention, an aluminum flat plate 8 as shown in the drawing is closely fixed by a plurality of screws 9 at the center in the width direction of the back surface of the wood body 4. The material of the aluminum flat plate 8 is an Al—Mg (aluminum magnesium) alloy excellent in light weight, corrosion resistance, and workability, but a stainless steel flat plate or an iron flat plate can be substituted. In the present invention, a stainless steel flat plate or an iron flat plate has a specific gravity approximately three times that of an aluminum flat plate, and therefore an aluminum flat plate that is light and available at a low cost is selected.

In FIG. 1B, the aluminum flat plate 8 is fixed to the back surface of the body 4 in a convex shape and has a thickness of about 3 mm to 10 mm. The length of the aluminum flat plate 8 is about 400 mm, and the width is about 100 mm, which is the same as the longitudinal dimension of the bridge 5.

FIG. 2A shows a perspective view with an exploded view in the first embodiment. When the back cover on the back surface of the body 4 is opened, the tremolo spring 12 connected to the bridge 5 is stretched. A tremolo spring 12 is attached to the body 4 provided with a mechanism such as a tremolo unit for continuously changing the pitch. The tremolo spring 12 may be either a straight hook or an eight-shaped hook. A plurality of screws 9 are fixed to a plurality of screw holes 7 in a center in the width direction of the back surface of the body 4 so as to cover the tremolo springs 12.

FIG. 2B shows a perspective view with an exploded view in the second embodiment. The difference from FIG. 2A is that a rectangular recess-shaped fitting groove 13 is formed in the center of the back surface of the body 4 in the width direction. The length, width, and depth of the fitting groove 13 are equal to the dimensions of the aluminum flat plate 8.

3 shows a component diagram of the aluminum flat plate 8 in the first embodiment and the second embodiment, an enlarged sectional view taken along line XX and an enlarged sectional view taken along line YY in FIG.

FIG. 3A is a first embodiment, and a plurality of through holes are provided on the periphery of the aluminum flat plate 8.

As shown in the enlarged cross-sectional view along the line XX in FIG. 3A, a tremolo spring 12 is provided inside the center of the body 4, and a bridge 5 is disposed in front of the center of the body 4. The width of the aluminum flat plate 8 covers the tremolo spring 12 and is equal to the width (longitudinal direction) of the bridge 5, and the screw 9 is fixed to the screw hole 7 so as to be convex.

As shown in FIG. 3 (A) XX line enlarged cross-sectional view and YY line enlarged cross-sectional view, the cross section of the body 4 is formed in a convex shape. This is an effective means for remodeling an existing electric guitar at a low cost.

FIG. 3B shows a second embodiment, in which the central portion of the aluminum flat plate 8 has a substantially T-shape so as not to interfere with the spring hanger, tremolo spring 12 and inertia block provided inside the back surface of the body 4. A groove of the recess 14 is formed. In the case of the body 4 of the electric guitar 1 that is not provided with a tremolo unit or the like, the groove of the aforementioned substantially T-shaped recess 14 is not necessary.

As shown in FIG. 3 (B) XX line enlarged cross sectional view and YY line enlarged cross sectional view, a rectangular recessed groove 13 is formed in the center of the back surface of the body 4 in the width direction. The aluminum flat plate 8 is fitted into the groove 13 and the screw 9 is correspondingly fixed to the screw hole 7.

By embedding the aluminum flat plate 8 in the fitting groove 13, there is no step on the front surface side of the body 4, the aesthetic appearance of the electric guitar 1 is not impaired, and the performance of the performer is affected. Disappear. This is an effective way to make a new electric guitar easily and inexpensively.

FIG. 4 shows a component diagram of the aluminum flat plate 8 in the third embodiment and the fourth embodiment, an enlarged sectional view taken along line XX and an enlarged sectional view taken along line YY in FIG.

FIG. 4A shows a third embodiment, in which a rectangular convex portion 15 is formed in the central portion of the aluminum flat plate 8 in the first embodiment, and the convex portion 15 includes a plurality of parallel tremolo springs 12. The structure is arranged so as to partition the space and is in contact with the back surface of the body 4.

FIG. 4B shows a fourth embodiment, in which a rectangular convex portion 15 is formed in the groove of the substantially T-shaped concave portion 14 of the aluminum flat plate 8 in the second embodiment, and the convex portion 15 is parallel to the fourth embodiment. The plurality of tremolo springs 12 are arranged so as to partition each other and are in contact with the back surface of the body 4.

The third embodiment and the fourth embodiment are effective means when the tremolo spring 12 is doubled.

The embodiment of the present invention shows an electric guitar 1 having a solid body guitar with a solid body 4 and a tremolo unit, but no head 2, no neck 3, no tremolo unit. Even a special type of guitar can be used.

1 Electric Guitar 2 Head 3 Neck 4 Body 5 Bridge 6 Neck Joint Plate 7 Screw Hole 8 Aluminum Flat Plate 9 Screw 10 String 11 Pickup 12 Tremolo Spring 13 Fitting Groove 14 Recess 15 Protrusion

Claims (3)

In the body structure of the electric guitar, the widthwise center of the body back, a plurality of tremolo have a comparable width and longitudinal dimension of the bridge, the aluminum plates to form a convex portion of a rectangular type in central, parallel A body structure of an electric guitar characterized in that it is arranged so as to partition between springs, and the aluminum flat plate is closely fixed with a screw to form a convex shape, thereby improving the fundamental and overtone acoustic characteristics. In the body structure of the electric guitar, a rectangular recess-shaped fitting groove having a width equivalent to the longitudinal dimension of the bridge is formed at the center in the width direction of the back surface of the body, and is equivalent to the longitudinal dimension of the bridge. have a width, the aluminum flat plate having grooves of substantially T-shaped recess in the center, is closely fixed by embedding in the body is fitted into the fitting groove, improve the acoustic properties of the fundamental and overtone The body structure of an electric guitar characterized by 3. The electric guitar body structure according to claim 2, wherein an aluminum flat plate in which a rectangular convex portion is formed in the groove of the substantially T-shaped concave portion is arranged so as to partition a plurality of parallel tremolo springs. the in the fitting groove is fitted in close contact and fixed to embedded in the body, the body structure of the electric guitar, characterized in that to improve the acoustic properties of the fundamental and harmonics.