JPH01231098A - Method for reinforcing neck section of guitar - Google Patents

Abstract

PURPOSE:To exert necessary reinforcement and bend correcting stress to strengthen the neck section itself by inserting bimetal iron cores into a long hole provided from the root or head of the neck section and tightening the nut of the iron cores. CONSTITUTION:A long hole 5 is provided from the root 2 or head 3 of the neck section 1 of a guitar and bimetal iron cores 10 whose leading ends are fixed to each other and tail ends arc combined to each other in a slidable state and engaged with a nut 14 are inserted into the long hole 5. After inserting the iron cores 10, the iron cores 10 are adjusted to necessary reinforcing and correcting stress by tightening the nut 14. In other words, the iron cores 10 are deformed by tightening the nut 14. Therefore, the neck section of the guitar can be reinforced by causing necessary reinforcing and correcting stress to act to the neck section.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an improved method of reinforcing the neck of a guitar.

Conventional Technology Conventionally, the neck of a guitar has the risk of bending due to the tension of the strings, so a method of reinforcing and straightening the neck to correct this bend and keep the neck in its normal straight state has been used to straighten the neck. A slender steel adjuster rod whose length can be adjusted freely is embedded in the housing. As an example of a method of reinforcing such an adjuster rod by embedding it in the neck of a guitar, a groove with a width equal to the diameter of the adjuster rod is provided on the back side of the neck and is gently curved in an inverted arc shape. Drill a through hole on the tangential extension line of the groove so that it communicates with both ends of the groove, and install the adjuster rod by inserting it through this through hole and through the groove. Tighten the nut at the tip of the adjuster rod to tighten the neck. After reinforcing
A commonly known method is to fill in the empty space where the groove remains with buried wood and reinforce it.

In addition to examples of such general reinforcing methods,
As described in Publication No. 33590, the neck of the guitar is bent into an arc shape in advance, a straight long hole is drilled along the entire length of the neck, and both ends of this long hole are counterbored to form the tip of the neck. A reinforcing method is known in which an adjuster rod is inserted through the neck portion, a counterbore hole on the distal end side of the neck portion is filled with wood, and the reinforcing or straightening stress is adjusted using a nut at the end of the adjuster rod.

However, in the first reinforcing method described above, it is necessary to treat the adjuster rod with a release agent such as wax or oil in advance to prevent the adhesive from sticking to the groove filler. This requires a large number of steps such as trenching, drilling, and filling the shade with wood, which is time-consuming and labor-intensive, and the marks left by the wood filling are unsightly.
Particularly, the wood filling in the groove part requires pressure work to determine the depth, width, length, and arcuate shape, which poses problems such as being quite troublesome.

Further, in the above-mentioned second reinforcing method, it is necessary to bend the neck portion into an arc shape in advance and then drill a long straight hole, which poses problems such as making the hole cumbersome and difficult.

Therefore, an object of the present invention is to solve the problems with such conventional reinforcement methods by drilling a long hole from the root or head of the neck portion, inserting a bimetallic iron core into the long hole, and To provide an improved method for reinforcing the neck part of a guitar, which strengthens the neck part itself by applying necessary reinforcement and bending straightening stress by tightening the nut of the bimetallic iron core.

In order to solve the problem, the method for reinforcing the neck of a guitar according to the present invention is to make a long hole from the root or head of the neck of the guitar, and fix the front ends to each other within this long hole. The method consists of inserting a bimetallic core whose rear ends are slidably combined with each other and provided with a nut, and tightening the nut at the rear end of the bimetallic core to adjust the required reinforcing or straightening stress.

By the above-mentioned means, a bimetallic iron core is inserted into a long hole drilled from the base or head of the neck of the guitar.
By tightening the nut of this bimetallic core and deforming the bimetallic core, the neck of the guitar can be reinforced by applying stress for necessary reinforcement and bending correction.

Other objects, features and advantages of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

EMBODIMENTS As shown in FIGS. 1 and 2 of the drawings, in the improved method of reinforcing the neck of a guitar according to the present invention, first, from the base 2 of the guitar neck 1 to the elongated hole 5 is opened by any suitable means such as a laser beam or a long drill. In the case of the illustrated embodiment, the elongated hole 5 is a blind hole, but it goes without saying that the long hole 5 is not limited to a blind hole and may be a penetrating hole. Furthermore, as shown in FIG. 3, the elongated hole 5 can also be opened from the head 3 of the neck 2 of the guitar, and a long drill with a relatively large diameter can be used, so accuracy can be improved. Furthermore, if necessary, the neck portion 1 having the elongated hole 5 can be impregnated with resin in a vacuum or pressure cooker containing resin to perform resin impregnation treatment.

In this way, the base 2 or the head 3 of the neck 2 of the guitar
A bimetallic iron core 10 is inserted into the elongated hole 5 made from the hole 5.

The bimetallic iron core 10 is made of a combination of two different metals, as shown in FIG. 4, for example, as shown in the figure, a first elongated metal rod 11 with a rectangular cross section and a second elongated metal rod 12 with a circular cross section. It is composed of. A first metal rod 11 having a rectangular cross section is fixed at one end to a second metal rod 12 having a circular cross section, for example, by explosive welding or brazing, and a cylindrical sleeve 14 is fixed to the other end. The other end of the second metal rod 12 is slidably inserted into the sleeve 14 of the first metal rod 11 . Further, the other end of the second metal rod 12 is threaded and has an elongated nut 16 screwed thereon. Therefore, the nut 1 at the other end of the second metal rod 12
When the first metal rod 6 is tightened, the first metal rod 11 is deformed and curved, and stress is applied to the first metal rod 11.

Once the elongated hole 5 is formed in the guitar neck 1 in this manner, the bimetallic iron core 10 is inserted into the elongated hole 5 through the root portion 2 or the head portion 3 of the elongated hole 5. When inserting this bimetal iron core 1o, as shown in FIG.
For example, a necessary amount of epoxy adhesive 17 may be injected into the bottom of the metal core 10, and one end of the metal iron core 10 to be inserted may be glued and fixed, or as shown in FIG. 'A semicircular piece of wood 18 is glued and fixed along the wall surfaces of both +1111 at the entrance of the elongated hole 5 over an appropriate length to prevent rotation of the bimetallic iron core 10 to be inserted. It is preferable to do so.

Once the adhesive 17 (Fig. 5) is injected into the bottom of the elongated hole 5 and the bimetal iron core 10 is inserted into the elongated hole 5 provided with the wooden piece 18 (Fig. 6) for preventing rotation, the bimetallic iron core 10 is inserted into the elongated hole 5. A nut 16 screwed to the end of the second metal rod 12 of the iron core 10 is tightened with a hexagonal wrench 20 to curve and deform the first metal rod 11 and adjust it to apply a required corrective stress. The predetermined reinforcement process is completed.

Effects of the Invention As described above, according to the improved method for reinforcing the neck of a guitar according to the present invention, a long hole is drilled in the neck of the guitar using a long drill with a relatively large diameter, and different types of holes are inserted into the long hole. All you have to do is insert a bimetallic iron core made of two types of metal rods, tighten the nuts on the bimetallic iron core, and bend and deform the bimetallic iron core to apply the specified stress for reinforcement and straightening, which greatly reduces the number of steps. This eliminates the need for troublesome embedding of long grooves, which saves time and effort, eliminates the need to treat the adjuster rod with a release agent that accompanies this embedding process, and eliminates the need for any bending of the neck. The desired functions can be achieved with fewer steps and in a shorter time, and the neck itself can be further strengthened.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a guitar neck in which a long hole has been drilled in order to carry out the guitar neck reinforcing method of the present invention, Fig. 2 is an end view, and Fig. 3 is a neck of another guitar. FIG. 4 is a front view showing the bimetallic core used in the reinforcing method of this invention, and FIG. The partial cross-sectional view, FIG. 6, is an end view of the neck of the guitar into which the bimetallic iron core has been inserted. In the figure, 1: neck, 2: root, 3: head, 5: long hole 1, IO/bimetal iron core, 1
1.12・Metal rod, 14. Sleeve, 16 oak l1.
17: Resin, 18: Wood piece, 20: Hexagon spanner. Figure 1 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] A long hole is made from the base or head of the neck of the guitar, and a bimetallic iron core is inserted into this long hole, the front ends of which are fixed to each other, the rear ends of which are slidably assembled together, and provided with a nut. A method of reinforcing the neck of a guitar, which consists of tightening a nut at the rear end of the iron core and adjusting the required reinforcing stress.