JP2000276167A - Body structure of stringed instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a production process by reducing the consumption of timber and to inexpensively manufacture a body structure while maintaining a high-quality finish feel and sound quality and to enhance the degree of freedom in design. SOLUTION: The body is composed by a body frame 21, a center block 24 disposed in the central part of this body frame and a front surface plate 12 and rear surface plate 13 covering the front and rear surfaces of the body frame 21 and the center block 24. The body frame 21 is formed of metal or synthetic resin and the center block 24 is formed of timber or synthetic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body structure of a stringed instrument suitable for being applied to an electric guitar body.

[0002]

2. Description of the Related Art Electric guitars, which are usually called electric guitars, can be broadly classified according to differences in body structure.
There are two types: solid type and semi-acoustic type.
As disclosed in Japanese Utility Model Publication No. 55-36872, the solid type is formed by processing a body into a required shape with a piece of wood, and has a completely solid inside,
There are two types of structures in which a hollow portion is provided by hollowing out a part of the inside. The semi-acoustic type is 55-246
As disclosed in Japanese Patent Publication No. 0, etc., an exterior deck and side plates made of wood such as pine and spruce form a body that is hollow inside and functions as a resonance body similarly to an acoustic guitar, and a maple or the like is formed in the center of the interior. A pillar (center block) made of wood is provided.

FIG. 5 shows a conventional solid-type electric guitar. In the figure, 1 is a body, 2 is a neck, 3 is a string,
4 is a bridge, 5 is a pickup device for converting the vibration of the string 3 into an electric signal, 6 is a tailpiece, 7 is various knobs for adjusting the volume, sound quality and the like, and 8 is a pickup changeover switch. The body 1 is usually made of solid wood (thickness 40 to 5).
0 mm) is formed into a predetermined shape by woodworking, and then subjected to painting and polishing to finish.
Then, the bridge 4, the pickup device 5, the tail piece 6, the various knobs 7 and the switches 8
The base of the neck 2 is joined to the front end, and the string 3 is stretched.

FIG. 6 is a cross-sectional view of a body of a conventional acoustic electric guitar.
Is an exterior deck, which is composed of a front deck 12 and a back deck 13 that respectively cover the front and back surfaces of the center block 10. 1
Reference numeral 4 denotes a side plate connecting the peripheral edges of the front deck 12 and the back deck 13.

[0005]

As described above, in the conventional electric guitar, the body of both the solid type and the semi-acoustic type is made of wood. However, in the case of wood, many steps such as aging, woodworking, polishing, painting and the like are required, so that it takes a lot of time and labor to manufacture, and the production cost is increased. In particular, the coating requires a base coat, a base coat, a polishing, an intermediate coat, a polishing, a top coat, a polishing step, etc., so that the cost is high, and it may be as much as 50% of the entire processing time. I have. In addition, the prices of timber itself have risen due to the depletion of resources due to random logging, and it is difficult to obtain high-quality timber. In addition, since woodworking is difficult to perform fine processing, there have been many problems such as great restrictions on design.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to reduce the amount of wood used, simplify the manufacturing process, and provide a high-quality finish and feeling. It is an object of the present invention to provide a body structure of a stringed instrument that can be manufactured at low cost while maintaining sound quality, and that can increase the degree of freedom in design.

[0007]

According to a first aspect of the present invention, a body frame, a center block provided at a central portion of the body frame, and front and back surfaces of the body frame and the center block are provided. And an exterior deck, wherein the body frame is formed of metal or synthetic resin.

[0008] In a second aspect based on the first aspect,
The center block is made of wood.

In the present invention, when the body frame is made of metal or synthetic resin, the amount of wood used can be reduced. Further, polishing and painting are not required, and the manufacturing process can be simplified. As the material of the body frame, in the case of metal, an aluminum alloy, a magnesium alloy, or the like is used. In the case of a synthetic resin, noise resistance can be improved by using a conductive resin.
Wood, synthetic resin, or the like is used as the material of the center block. Especially when using wood, sound quality is good. As the material of the exterior deck, a composite material such as wood and carbon graphite, a metal plate such as aluminum and magnesium, and a plastic plate can be used. When a metal plate or a plastic plate is used for the exterior deck, the painting process is not required. Even when wood is used for the exterior deck, the shape is simpler than that of a normal guitar body, so that painting can be performed easily because the shape is plate-like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a body structure of a stringed musical instrument according to the present invention, FIG. 2 is a perspective view of the body, and FIG. 3 is a sectional view taken along line III-III of FIG. In these figures, a body 20 is composed of a body frame 21, a front deck 12 and a back deck 13 which constitute an exterior deck, and a center block 24.

The body frame 21 is formed of a metal or a synthetic resin into a shape as shown in FIG. 1, so that three punched holes 28, The center block 24 is fitted into a central hole 28 ′, and various electric components are housed in the holes 28, 28 on both sides. In addition, the weight of the frame itself is reduced by the holes 28.

A neck 2 (FIG. 5) is provided on the surface of the center block 24 which is fitted and fixed in the hole 28 '.
), Three concave portions 30 into which the pickup devices are respectively incorporated, and concave portions 31 into which the bridge is incorporated are formed in parallel in the longitudinal direction. Here, an example in which the center block 24 is formed in a substantially flat plate shape has been described, but the center block 24 may have a convex lens shape in which the thickness at the center in the width direction is the thickest and the cross-sectional shape gradually decreases toward both ends. Good.

When such a body frame 21 is manufactured, an aluminum alloy, a magnesium alloy, or the like is used, and is manufactured by die casting or the like. In the case of a synthetic resin, any of a thermoplastic resin and a thermosetting resin may be used, but a conductive synthetic resin (for example, polyurethane, polyester, or the like) mixed with carbon, copper powder, or the like is preferably used. , Manufactured by injection molding. In particular, in the case of a synthetic resin, there is an advantage that it can be colored freely and does not need to be painted.

The front deck 12 and the back deck 13 are formed in the same shape as the contour of the body frame 21, and are respectively bonded to the front and back of the body frame 21 and the center block 24 by an adhesive. At the center in the width direction on the surface of the front deck 12, cutouts 35 and holes 36 to 39 having the same shape are formed corresponding to the recesses 29 to 31 of the center block 24, and various knob shafts are formed. A plurality of small holes 40 through which are inserted are formed. Further, a connection hole 41 into which a jack of an amplifier connection cord is inserted is formed on one side surface of the rear end side of the body frame 21.

The material of the front deck 12 and the back deck 13 is as follows.
Wood such as conker plywood and sycamore plywood, a composite material such as carbon graphite, and a metal or synthetic resin plate such as an aluminum alloy are used. In the case of carbon graphite, an aluminum alloy, or a synthetic resin, it can be easily manufactured by punching with a press machine, and painting is not required. For plywood, CN
After processing and forming into a predetermined shape using a C router or a template, polishing and painting are performed. The coating is performed by a roll coater 43 or the like as shown in FIG.

The coating and polishing of the front deck 12 and the back deck 13 are as follows.
It is performed in a flat state, and then the front deck 12 and the back deck 13 may be curved so as to match the shape of the front and back surfaces of the center block 24. The polishing process can be largely automated and simplified.

According to the body 20 having such a structure, since the body frame 21 is formed of a metal or a synthetic resin, it can be manufactured easily and with high precision by die casting or injection molding. In addition, since the front and back surfaces are covered by the front deck 12 and the back deck 13, the center block 24 does not impair the appearance of the body 20 without painting or polishing, and the manufacturing process can be significantly simplified. Productivity can be improved. Further, since the side surface of the body frame 21 functions as a conventional side plate, there is no need for a process for manufacturing the side plate, and the manufacturing process can be further simplified. Furthermore, by using metal or synthetic resin, the amount of wood used can be reduced, and a tone different from that of a conventional wooden body can be obtained.

Further, when the body frame 21 is made of an aluminum alloy or a magnesium alloy, it is lightweight and the noise resistance of the guitar can be improved. Further, since such metals can be reused, they are also excellent in effective use of resources. Similarly, noise resistance can also be improved when manufactured using a conductive synthetic resin. Furthermore, in the case of a synthetic resin, it can be colored to a desired color and does not require painting.

If the front deck 12 and the back deck 13 are made of aluminum alloy or carbon graphite and the center block 24 is made of synthetic resin, a completely new body using no wood can be provided. Furthermore, since a complicated and fine shape can be obtained as compared with wood, the degree of freedom in design can be increased. Further, when wood is used for the center block 24, a high-quality guitar having good sound quality in terms of sound quality can be obtained as compared with the case where the center block 24 is made of synthetic resin.

The part using wood is the center block 2
4. By using only the front deck 12 and the back deck 13, the amount of wood used can be reduced to 50% or less as compared with a conventional guitar body.

[0021]

As described above, according to the body structure of a stringed musical instrument according to the present invention, the amount of wood used can be reduced, and at the same time, the manufacturing process, especially the painting and polishing processes, can be simplified. It can be manufactured at low cost while maintaining a high quality finish. Furthermore, metal and synthetic resin can process finer shapes with higher precision than wood, so that the degree of freedom in design can be improved. Furthermore, when wood is used for the center block, a high quality guitar with good sound quality can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a body structure of a stringed musical instrument according to the present invention.

FIG. 2 is a perspective view of a body.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a view showing a polishing step of the exterior deck.

FIG. 5 is an exploded perspective view of a conventional solid-type electric guitar.

FIG. 6 is a sectional view of a body of a conventional semi-acoustic electric guitar.

[Explanation of symbols]

1 ... body, 2 ... neck, 3 ... strings, 4 ... bridge, 5 ...
Pickup device, 6 ... Tailpiece, 7 ... Various knobs, 10 ... Center block, 11 ... Exterior deck, 12 ...
Front deck, 13 ... Back deck, 14 ... Side plate, 20 ... Body, 2
1 ... body frame, 24 ... center block, 28 '
… Drilled hole.

Claims (2)

[Claims] 1. A vehicle comprising: a body frame; a center block provided in a center portion of the body frame; and an outer deck covering front and back surfaces of the body frame and the center block, wherein the body frame is formed of metal or synthetic resin. The body structure of a stringed instrument characterized by: 2. The body structure of a stringed musical instrument according to claim 1, wherein the center block is formed of wood.