JPH032948Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to an improvement of a mounting bracket for fixing the core of a shamisen.

(Prior Art) Conventionally, a mounting bracket for fixing a shamisen core to a body generally has a cylindrical shape having a flange that engages with the outer surface of the body. To fix this mounting bracket to the shell, insert the mounting bracket into the core insertion hole drilled in the shell so that the outside of the shell is visible, and then insert the tip of the mounting bracket that protrudes inside the shell so that the inside of the shell is visible. It was fixed by expanding radially with the grooves (see Figure 4).

(Problem that the invention aims to solve) However, in order to attach the core mounting bracket in this way, it must be installed before attaching the skin of the shamisen, and the mounting bracket fixed to the body does not interfere with the work of attaching the skin. It was getting in the way. Moreover, if the fixed mounting bracket becomes loose, it cannot be readjusted without peeling off the skin from the body.

On the other hand, the shamisen has a bridge between the strings and the skin. This is used to adjust the spacing between the strings and the skin, the balance of the strings by determining the position where the plectrum is applied, and the tension of the strings. However, the thickness of the cat or dog skin used for the shamisen skin varies slightly depending on the use, and the thickness of the strings is also not uniform. Therefore, if you try to adjust the height of the string or the balance of the string using only the bridge, you will need to move the position of the bridge along the string or shave the bridge to adjust the height of the bridge. Then, as this piece moves, the position where the plectrum is applied and the tension of the strings change slightly.
Another disadvantage is that the pieces are cut into small pieces and cannot be reused. Therefore, it has become extremely difficult for the player to maintain the optimum balance and position of the string each time the leather is replaced. Moreover, the period of re-covering is usually every six months or, in most cases, every three months.

Therefore, this device was devised to solve the above-mentioned problems. It is extremely easy to adjust the balance of the string, etc., and it does not interfere with the re-stretching work, and even after the string is re-strung, the core cannot be removed. The purpose of the present invention is to provide a shamisen core mounting bracket that can be readjusted.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above-mentioned object, this invention is based on a shamisen core mounting bracket in which a core is inserted into a core insertion hole having a generally oval cross-section that expands in the thickness direction of the body. , a cylindrical body having a locking flange that locks on the outer opening edge of the core insertion hole, a cylindrical body that is inserted into the body from the rod insertion hole of the body, and screwed to the outer peripheral surface of the cylindrical body, and the cylindrical body is inserted into the core. A means for solving the problem is to include a fixed ring that is slidably fixed along the hole.

(Function) According to this invention, the cylindrical body that slides along the approximately oval core insertion hole is screwed in the direction of the thickness of the body by a fixed ring inserted from the core insertion hole of the body. It is fixed in a position that can be adjusted freely.

(Example) Hereinafter, an example of this invention will be described in detail with reference to the drawings.

Reference numeral 1 shown in the figure is a cylindrical body, and the body 10 is inserted into the core insertion hole 14 bored at the bottom of the body 10 of the shamisen.
It is inserted so that it can be inserted and removed freely with the outside visible, and a locking flange 1A that locks on the peripheral edge of the core insertion hole 14 during insertion is provided at one end.

The core insertion hole 14 into which the cylindrical body 1 is inserted has an oval shape that is slightly expanded in the thickness direction of the body 10, and the core 13 whose tip is protected by a protective cap 3.
is formed so as to slide in the thickness direction of the body 10.

Reference numeral 2 denotes a fixed ring screwed onto the outer peripheral surface of the tip of the cylinder 1 inserted into the barrel 10. The fixing ring 2 fixes the cylinder 1 slidably in the barrel 10 by tightening the cylinder 1 slidably inserted along the expansion direction of the core insertion hole 14 so that the cylinder 1 can be adjusted freely. The fixed ring 2 in the illustrated example has a pair of locking holes 2A formed in the end surface of the fixed ring 2 for inserting and locking the tip of the adjustment tool, and a rod insertion hole 15 for inserting the rod 12 into the body 10.
Insert the adjustment tool from the center and rotate the fixed ring 2.
The shape of the fixed ring 2 can be changed to any shape other than the illustrated example, such as a nut shape.

The plate at the bottom of the shell 10 has a curved cross section that curves outward from the shell 10. Therefore, both the locking flange 1A and the fixed ring 2 of the cylinder 1 have their contact surfaces with the barrel 10 curved to match the curved shape of the bottom.

Slide adjustment of the cylinder 1 is achieved by forming a bulge 1c on a part of the outer surface of the cylinder part of the cylinder 1 that is in contact with the core insertion hole 14, and rotating the cylinder 1 to adjust the inner circumference of the core insertion hole 14. The cylindrical body 1 is slidably adjusted by bringing the bulging portion 1C into sliding contact with the surface (see FIGS. 2 and 3). The bulging portion 1C is planned to be formed by bonding cloth, leather, etc. to a part of the side surface of the cylinder 1.

[Effect of idea]

This invention achieves its original purpose by being constructed as described above.

That is, in the shamisen core mounting bracket, the locking flange is inserted into the core insertion hole 14 having a generally oval cross section that expands in the thickness direction of the body 10 and is locked to the outer opening edge of the core insertion hole 14. Cylinder 1 with 1A
and a fixing ring 2 that is inserted into the barrel 10 through the rod insertion hole 15 of the barrel 10 and screwed onto the outer peripheral surface of the barrel 1 to fix the barrel 1 slidably along the core insertion hole 14. As a result, the cylindrical body, which slides along the approximately oval shaped core insertion hole, is screwed by a fixed ring inserted from the rod insertion hole of the body.
It is fixed so that its position can be adjusted freely in the thickness direction of the body.

Therefore, it is possible to adjust the balance of the string by sliding the mounting bracket of this invention in the direction of the thickness of the body. Therefore, even if the thickness of the skin 11 is different, the balance of the string, the position where the string is applied, etc. can be adjusted to the optimum condition. In addition, the cylinder body 1
Since the fixed ring 2 and the fixing ring 2 are fixed by screws, adjustment work is extremely easy.

Moreover, the cylinder body 1 can be inserted through the rod insertion hole 15 of the body 10.
Since the and fixing ring 2 can be screwed together, the skin 11 can be applied before attaching the metal fittings, which eliminates the inconvenience of conventional mounting fittings that are fixed before applying the skin and prevent the skin-adhesive work. do.

Furthermore, unlike conventional mounting fittings, there is no need to bend the tip of the fitting, so the metal fatigue of the fitting is extremely low and it can be used over and over again.

In this way, according to this invention, it is extremely easy to adjust the balance of the string, and it does not interfere with the work of replacing the skin, and the core can be readjusted even after the skin has been re-strung. Have a beneficial effect.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a cutaway front view showing the main parts, Fig. 2 is a partially enlarged sectional view, Fig. 3 is an exploded perspective view showing the mounting bracket and the core, and Fig. Figure 4 is a side view showing the adjustment state of the core, Figure 5
The figure is a perspective view showing a conventional core mounting bracket. 1... Cylindrical body, 1A... Locking flange, 1B...
Screw thread, 1C... bulge, 2... fixed ring, 2A...
...Latching hole, 3...Protective cap, 10...Body, 1
1... skin, 12... collar, 13... core, 14...
Core insertion hole, 15...rod insertion hole.

Claims (1)

[Scope of utility model registration request] A shamisen core mounting bracket includes a cylindrical body that is inserted into a core insertion hole with a generally oval cross section that expands in the thickness direction of the body, and has a locking flange that locks on the outer opening edge of the core insertion hole. , a shamisen characterized by comprising a fixing ring that is inserted into the body through the core insertion hole of the body, is screwed to the outer peripheral surface of the cylinder body, and fixes the cylinder body slidably along the core insertion hole. Core mounting bracket.