JPH0734483U - Bent correction device for guitar neck - Google Patents

Abstract

(57) [Abstract] [Object] The invention is to fit an elongated tubular member fitted in a slot provided at the center of the neck portion of a guitar in the longitudinal direction, and to form an iron core member of the tubular member. It is characterized in that the tubular member is biased by tightening and is deformed in the direction opposite to the bending to correct the bending of the neck portion. According to the bending correction device of the present invention, a long tubular member fitted in a slot provided along the longitudinal center of a neck portion of a guitar is provided on the side facing each other across the hole. When the iron core member put in the tubular member is tightened and biased from one end side by changing the strength of the portion, the tubular member bends in the direction opposite to the bending of the neck portion to correct the bending of the neck portion. It is characterized by doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for correcting bending of a neck portion of a guitar.

[0002]

[Prior art]

 Conventionally, in a stringed instrument such as a guitar, the neck portion is bent because the tension of the string stretched between the body portion and the tip portion of the neck portion always acts to bend the neck portion. It is necessary to correct such bending of the neck portion. Conventionally, as a means for correcting such a bend in the neck of a guitar, an iron core is inserted into the long groove of a U-shaped metal member having a long groove formed in the neck portion of the guitar. The nut at one end is tightened and the metal member is biased so as to bend, and bending stress is applied to correct the bending of the neck portion.

[0003]

[Problems to be solved by the device]

 However, in such a conventionally-used straightening means, when the nut is tightened and a bending stress is applied so as to bias the iron core, the iron core protrudes from the long groove of the metal member and is strongly effective. There are some problems such as being unable to correct the bend effectively.

Therefore, an object of the present invention is to solve the above-mentioned problems in the prior art by providing a long tubular member which is fitted in a slot provided at the center of the guitar neck in the longitudinal direction. It is an object of the present invention to provide a device for correcting the bending of the neck by biasing the tubular member by deforming the tubular member in the direction opposite to the bending by fitting the tubular member and tightening the iron core member of the tubular member.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, according to the present invention, a device for straightening the neck of a guitar is provided with a long hole which is fitted in a slot provided along the longitudinal center of the neck of the guitar. By changing the strength of the section on the opposite side across the hole in the cross section, the iron core member inserted in the tubular member is clamped from one end side and biased when the tubular member bends. It is characterized in that the bending of the neck is corrected by bending in the opposite direction.

[0006]

[Action]

 In the guitar neck straightening device of the present invention thus constructed, one side of the tubular member is changed so as to change the strength of the portion of the tubular member facing the other side with the hole in cross section. Providing a large number of transverse slits at right angles to the longitudinal direction, or changing the thickness of one part on the opposite side to the part on the other side, etc. Correcting the bending of the neck of the guitar by bending the iron core member toward the slit side of the tubular member or the thinner side when the iron core member is tightened by Can be done.

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

[0008]

【Example】

 1 to 6 of the drawings, there are shown some embodiments of the apparatus for straightening the neck portion of the guitar of the present invention. As shown, the bending apparatus of the first embodiment of the present invention is the bending apparatus. The straightening device 10 includes a long tubular member 11 fitted in a slot 4 provided along the center of the neck portion 3 of the guitar 1 in the longitudinal direction, and a side facing the long tubular member 11 with a hole 14 in between. In order to change the strength of the portion of the tubular member 11, for example, at one side of the cross-section of the tubular member 11 facing each other with the hole 14 in between, at intervals along the longitudinal direction of the tubular member 11 and at right angles to the longitudinal direction. When the iron core member 12 put in the tubular member 11 is tightened and biased from one end side, the tubular member 11 opposes the bending of the neck portion 3 of the guitar 1. By bending in the direction, the neck of guitar 1 It is possible to correct the bending of.

1 to 3 of the drawings show a guitar 1 provided with a bending correction device 10 according to a first embodiment of the present invention. As shown, the guitar 1 has a body portion. 2 and a neck portion 3 attached to one end of the body portion 2, and a groove hole 4 is provided along the center of the upper surface of the neck portion 3, and the bend straightening device 10 of the present invention is provided in the groove hole 4. It is fitted and the fingerboard 5 is attached, and the required strings 6 are attached. Therefore, when the string 6 of the guitar 1 is tensioned by the tensioning member 7, the neck portion 3 bends upward, and the bend of the neck portion 3 is corrected by the bend correcting device 10 of the present invention.

FIGS. 4 to 7 show in detail a first embodiment of the bend correcting device for the neck portion of the guitar of the present invention. As shown, the bend correcting device 10 has a long length. The tubular member 11 and the elongated iron core member 12 inserted into the tubular member 11 are provided to change the strength of the portions of the tubular member 11 on the opposite sides of the hole 14 in the cross section. In the cross-section of the tubular member 11, a plurality of slits 15 extending in the lateral direction at right angles to the longitudinal direction of the tubular member 11 are provided on one side facing each other across the hole 14 and are spaced along the longitudinal direction of the tubular member 11. Is set up. Further, a head 16 is provided at one end of the iron core member 12, a rotation stopper 17 is provided at the lower side of the head, and a screw is cut at the other end so that a tightening nut 18 can be inserted through a washer 19. Have been fitted.

Therefore, in such a bend straightening device 10, the iron core member 12 is inserted into the hole 14 of the tubular member 11, the fastening nut 18 is fitted to the threaded portion through the washer 19, and the head portion 16 is inserted. It is fitted into the slot 4 of the neck portion 3 so that the side is located on the base side of the neck portion. In such a guitar 1, when the string 6 is stretched and tensioned by the tension member 7, the neck portion 3 bends upward, and in this case, the bending correction of the present invention located on the tip side of the neck portion 3 is performed. By tightening the tightening nut 18 of the device 10, the tubular member 11 is bent as shown in FIG. 7, and thus the bending correction device of the present invention is opposed to the bending of the neck 3 of the guitar 1 by the preceding string 6. The bend of the neck portion 3 can be corrected by the number 10.

8 to 12 show a second embodiment of the bending correction device of the present invention. This bending correction device 20 includes a tubular member 21 provided with a plurality of slits as in the first embodiment, an iron core member 22 inserted into a hole 24 of the tubular member 21, and a tubular member 21. It consists of a stopper 26 that closes one end of the hole 24 of the member 21 and a fastening screw 28 that is screwed into the threaded hole 24 at the other end of the tubular member 21. , For example, a hole 29 for a hexagon wrench is provided. Of course, the tightening screw 28 is not limited to the one that is tightened by the hexagonal wrench, but other similar screws can be used.

In the second embodiment, when the fastening screw 28 is tightened so as to face the bending of the neck portion of the guitar, the iron core member 22 is pressed and the tubular member 21 is tensioned, as shown in FIG. The bending of the tubular member 21 allows the bending of the neck portion of the guitar to be straightened by the bending straightening device 20.

FIGS. 13 to 15 show a third embodiment of the bending correction device of the present invention. The bending correction device 30 of the third embodiment has a tubular member 31 having an irregular cross section in which one side is thicker and the other side is thinner with a hole sandwiched in the cross section, and a head inserted into the hole 34 of the tubular member 31. It is composed of an iron core member 32 with 36 and a fastening screw 38 screwed to a threaded portion cut at the tip of the iron core member 32.

Therefore, in the third embodiment, when the fastening screw 38 is tightened so as to face the bending of the neck portion, the tubular member 31 is tensioned by the iron core member 32, and the tubular member 31 becomes thin. Since the tubular member 31 is curved toward the end, the bending of the tubular member 31 can correct the bending of the neck portion of the guitar. The irregular cross section of the tubular member 31 can also be formed outside the shape shown, for example by grinding one side of the tubular member into a D-shaped cross section.

In the bend correcting device 10, 20, 30 for the neck portion of the guitar of the present invention configured as described above, the slot 4 provided along the center of the neck portion 3 of the guitar 1 in the longitudinal direction. The tubular member 11 is formed of a long tubular member 11, 21, 31 and the long iron core member 12, 22, 32 inserted into the tubular member 11, 21, 31. In order to change the strength of the portions of the sections facing each other across the holes 14, 24, 34 in the cross sections of the holes 21, 24, 34, the tubular members 11, 21 are placed on the sides facing each other with the holes 14, 24 in the section. A plurality of transverse slits 15 and 25 perpendicular to the longitudinal direction of the tubular member 31 are provided at a required interval, or one portion and the other side of the tubular member 31 facing each other with a hole 34 therebetween. The tubular member 31 Is formed. Therefore, by changing the strength of the portions of the tubular members 11, 21 and 31 facing each other across the holes 14, 24 and 34 in this manner, the iron cores inserted in the tubular members 11, 21, and 31. When the members 12, 22, 32 are biased by being tightened from one end side, the tubular members 11, 21, 31 are bent in a direction opposite to the bending of the neck portion 3 of the guitar 1 so that the neck portion 3 of the guitar 1 is bent. The bending can be corrected accurately.

[0017]

[Effect of device]

 As described above, according to the bend correcting device for the neck portion of the guitar of the present invention, the long tubular member fitted into the slot provided along the longitudinal center of the neck portion of the guitar is provided. An irregular cross section, such as a plurality of transverse slits that are perpendicular to the longitudinal direction with a required spacing, or by changing the thickness of one part on the opposite side and the part on the other side For example, when the tubular member is changed in strength in the section on the opposite side across the hole in the cross section, and therefore the iron core member put in the tubular member is tightened and biased from one end side, the tubular member is Since it bends in the direction opposite to the bending of the neck portion of the guitar, this has the effect that the bending of the neck portion of the guitar can be accurately corrected. The guitar neck straightening device of the present invention has a small number of members because it is composed only of the tubular member and the iron core member, and the section of the tubular member on the side facing each other with the hole in between is simply included. It is only necessary to provide a plurality of slits at different intervals to change the strength, or to change the thickness between one part on the opposite side and the part on the other side. It is easy to manufacture and can be manufactured at low cost, and the operation has the effect that the bending of the neck can be easily corrected simply by tightening the screw at the tip of the neck.

[Brief description of drawings]

FIG. 1 is a plan view of a guitar provided with a bending correction device of the present invention.

2 is a schematic side sectional view showing the neck portion of the guitar of FIG. 1 in section. FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III of the neck portion of the guitar shown in FIG.

FIG. 4 is a side view showing a first embodiment of the bending correction device of the present invention with a part thereof omitted.

5 is a side view of the iron core member of the bending correction device of FIG. 4. FIG.

6 is a left end view of the bending correction device of FIG. 4. FIG.

7 is a side view of the bending correction device of FIG. 4 when the device is biased and bent.

FIG. 8 is a side view showing a second embodiment of the bending correction device of the present invention with a part thereof omitted.

9 is a side view of an iron core member of the bending correction device of FIG.

10 is a left end view of the bending correction device of FIG. 8. FIG.

11 is a right end view of the bending correction device of FIG. 8. FIG.

FIG. 12 is a side view of the bending correction device of FIG. 8 when the device is biased and bent.

FIG. 13 is a side view showing the tubular member of the third embodiment of the bending correction device according to the present invention with a part of the tubular member omitted.

FIG. 14 is an end view of the tubular member of FIG.

15 is a side view when the tubular member of the bending correction device of FIG. 13 is biased by an iron core member and curved.

[Explanation of symbols]

 1 Guitar 2 Body part 3 Neck part 4 Groove hole 5 Fingerboard 6 String 7 Tension member 10 Bending correction device 11 Tubular member 12 Iron core member 14 Hole 15 Slit 16 Head part 17 Detent 18 Fastening nut 19 Washer 20 Bending correction device 21 Tubular Member 22 Iron Core Member 24 Hole 25 Slit 26 Stopper 28 Fastening Screw 30 Bending Correction Device 31 Tubular Member 32 Iron Core Member 34 Hole 36 Head 38 Fastening Screw

Claims (3)

[Scope of utility model registration request] 1. A long tubular member fitted into a slot provided along the longitudinal center of a neck portion of a guitar, wherein the strength of portions on opposite sides of the hole in cross section is changed. When the iron core member put in the tubular member is tightened and biased from one end side, the tubular member bends in the direction opposite to the bending of the neck portion to correct the bending of the neck portion. A bend correction device for the neck of a guitar. 2. The tubular member is provided with a large number of slits at one side of the tubular member facing each other across the hole in a cross section at intervals in the lateral direction perpendicular to the longitudinal direction. 2. The bending correction device for a neck portion of a guitar according to claim 1, wherein the bending correction device is curved. 3. The tubular member is curved when the iron core member is tightened by changing the thickness of the portions of the tubular member facing each other across the hole in the cross section. 1. A bending correction device for the neck portion of the guitar according to 1.