JPH05957Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a touching device for stringed instruments such as shamisen and biwa, and is an improvement of Utility Model Application Publication No. 138896/1985, which was already proposed by the applicant. It is something.

(Prior art) In other words, the one disclosed in Utility Model Application Publication No. 138896/1983 is as follows:
The adjustment screw of the adjustment body is screwed into the lower end of the outer frame that is fitted under the first thread of the milk bag of the stringed instrument, so that it can move forward and backward in the vertical direction via the adjustment nut, and a vertically movable body is installed inside the outer frame. A movable upper piece with a ridge is inserted so that it can be moved up and down so that it can be protruded from the surface of the milk pouch by advancing and retracting the adjusting screw, and a compression spring is interposed between the adjusting screw and the movable upper piece. It was designed to allow Then, when adjusting the string, by turning the adjusting screw of the adjusting body clockwise, the movable upper bridge of the vertically movable body rises against the elastic force of the compression spring, and the first string is adjusted at the touch peak of the movable upper bridge. When the tension of the first thread is increased by pushing it up, the sound of the first thread becomes higher. Also, by rotating the adjusting screw of the adjusting body to the left, the movable upper piece of the vertically moving body is moved to the compression spring. The sound of the first string was made to become lower by lowering it with elastic force and reducing the tension of the first string.

On the other hand, only one or more vertical grooves are provided at the tip of the rotation control cylinder provided below the center of the T-shaped pedestal, and by tightening with a tightening nut, the adjustment screw is prevented from rotating freely. Alternatively, a tightening nut in which an elastic force is applied is disclosed (for example, Japanese Utility Model Application Publication No. 56695/1983).

(Problem to be solved by the invention) However, in the former case, since the adjusting nut of the adjusting body is formed in the shape of a mere inverted truncated cone, the adjusting screw of the adjusting body and the adjusting nut are screwed together by one thread. After adjusting the tension of the string and adjusting the string, the adjustment screw on the adjustment body is simply held by the engagement with the adjustment nut, so the adjustment screw tends to loosen, and each time you play a song with the plectrum, the adjustment screw on the adjustment body will tighten. The tension of the first thread had to be adjusted at the same time, and the operation of adjusting the tension of the first thread was troublesome. Not only that, but when you pull the first string with a pick, the slight vibration from the movable upper piece of the vertically moving body that pushes up the first string is softened only by the elastic force of the compression spring. When the first thread was played with a pick, a hard, metallic sound was emitted, which had a negative effect on the tone of the first string.

In addition, in the latter case, only one or more vertical grooves are provided at the tip of the rotation control cylinder, and the adjustment screw is tightened with a tightening nut to prevent free rotation of the adjustment screw, so the adjustment screw does not easily loosen. , the tension of the first string must be adjusted with the adjustment screw every time a song is played with the plectrum.Not only is it troublesome to adjust the tension of the first string, but there is also one thread at the tip of the rotation control tube. By providing only the above-mentioned longitudinal grooves and applying elastic force to the tightening nut, when the first thread is pulled with a pick, the movable upper piece of the vertically moving body that pushes the first thread upwards. I couldn't expect to hear a soft, clear, and beautiful tone because I couldn't soften the subtle vibrations from the sound.

Therefore, the present invention was devised to solve the above-mentioned problems, and the tension of one string can be adjusted without adjusting the tension of one string every time a song is played. To provide a touch device for a stringed instrument which allows adjustment operations to be performed extremely easily and which emits soft, clear and beautiful tones.

(Means for solving the problem) In order to achieve the above-mentioned purpose, the present invention
The adjustment screw of the adjustment body is screwed into the lower end of the outer frame that is fitted under the first thread of the milk bag of the stringed instrument, so that it can move forward and backward in the vertical direction via the adjustment nut, and a vertically movable body is installed inside the outer frame. A movable upper piece with a ridge is inserted so that it can be moved up and down so that it can be protruded from the surface of the milk pouch by advancing and retracting the adjusting screw, and a compression spring is interposed between the adjusting screw and the movable upper piece. In the touching device for a stringed instrument, a vertical groove is provided along the female threaded part of the cylindrical core from the upper end of the adjusting nut of the adjusting body to the vicinity of the lower end, and a lateral groove is provided on one side of the upper part of the adjusting nut, and the adjusting nut has a lateral groove that communicates with the vertical groove. are provided approximately at right angles to the vertical groove.

(Function) With the technical means described above, when adjusting the strings,
As the adjusting screw of the adjusting body rotates clockwise, the lower part of the horizontal groove of the adjusting nut of the adjusting body rises slightly against the slight elastic force caused by tightening the adjusting screw, and the vertical and horizontal grooves of the adjusting nut rise slightly. After the interval is narrowed and the string has been adjusted, the adjustment screw is tightened and held by the lower part of the horizontal groove of the adjustment nut of the adjustment body that tries to return to its original position, preventing the adjustment screw from loosening. Make it possible to prevent it. In addition, by applying elastic force to the lower part of the lateral groove of the adjusting nut of the adjusting body, when the first string is pulled with a plucke, the slight impact from the movable upper piece of the vertical moving body that is pushing up the first string can be applied. To soften vibration along with the elastic force of a compression spring.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in Figures 1 to 4, a square tube is fitted into a fitting hole drilled below the string 1 (thickest string) of a milk bag (not shown) of a stringed instrument such as a shamisen. A flange 3 is provided on the outer peripheral surface of the lower end of a shaped outer frame 2, and at the lower end of the outer frame 2, a horizontal substrate 4 whose both ends are screwed to the lower surface of the flange 3,
An adjustment nut 6 in the shape of an inverted truncated cone fixed to a through hole 5 in the longitudinal center of the lower surface of the substrate 4; an adjustment screw 7 screwed into the adjustment nut 6 so as to be able to move forward and backward in the vertical direction; An adjusting body 9 consisting of a projecting plate 8 having a substantially U-shaped side surface is attached to the central portion of the upper surface in the longitudinal direction.

In addition, inside the outer frame 2, there is a touch ridge 1 at the top.
The movable upper piece 12 is made of either golden gunmetal, which is an alloy of copper and tin, or yellow gold-plated brass, which is an alloy of copper and zinc, and has a dovetail-shaped protrusion 11 at the bottom. A clamping plate 13 with a dovetail shape at the front clamps the protrusion 11 of the movable upper piece 12. A contact plate 13 is fixed to the top of the clamping plate 13 and has a groove shape facing upward at the front, with the tip of the adjustment screw 7 contacting the lower end surface.
The vertically movable body 15, which is made up of the upper frame 14 and the lower frame 15a, is inserted so as to be movable up and down so as to be projected onto the surface of the milk bag by the forward and backward operation of the adjustment screw 7 of the adjustment body 9.
2. Two stainless steel compression springs 1 are inserted between the upper bent piece 16 of the lower adjusting body 9 and the protruding plate 8 of the lower adjusting body 9.
7 is inserted.

In the string instrument handling device formed as described above, a vertical groove 19 is provided along the cylindrical female threaded portion 18 from the upper end of the inverted truncated cone-shaped adjustment nut 6 of the adjustment body 9 to the vicinity of the lower end. Adjustment nut 6
A horizontal groove 20 communicating with the vertical groove 19 is provided at a right angle to the vertical groove 19 on one side of the upper part of the vertical groove 19 .

Next, the state of use of the present invention will be explained. When adjusting the string, by rotating the adjustment screw 7 of the adjustment body 9 clockwise as shown in FIG. Rise and touch mountain 1 of movable upper piece 12
When the tension of thread 1 is increased by pushing up thread 1 at 0, the sound of thread 1 becomes higher. Further, as shown in FIGS. 1 to 3, the adjustment screw 7 of the adjustment body 9
When the movable upper piece 12 of the vertically movable body 15 is lowered by the elastic force of the compression spring 17 and the tension of the first thread 1 is reduced by rotating it to the left, the first thread 1
The sound becomes lower.

(Effects of the invention) The present invention is constructed as described above, and a vertical groove 19 is provided along the cylindrical female threaded portion 18 from the upper end of the adjustment nut 6 of the adjustment body 9 to the vicinity of the lower end.
A horizontal groove 2 communicating with the longitudinal groove 19 is provided on one side of the upper part of the
0 is provided at a substantially right angle to the vertical groove 19, so that when adjusting the string, as the adjusting screw 7 of the adjusting body 9 is rotated clockwise, the adjusting nut 6 of the adjusting body 9 is rotated as shown in FIG. The lower part 21 of the lateral groove rises slightly against the slight elastic force caused by tightening the adjustment screw 7, and the interval between the vertical groove 19 and the lateral groove 20 of the adjustment nut 6 narrows, and after the string adjustment, the adjustment body 9 The adjustment screw 7 is tightened and held by the slight elastic force of the horizontal groove lower part 21 of the adjustment nut 6 that tries to return to its original position, and the adjustment screw 7 can be prevented from loosening. It is extremely easy to adjust the tension of the first string 1 without having to adjust the tension of the first string 1 every time a song is played.

Furthermore, by providing the adjusting nut 6 of the adjusting body 9 with a vertical groove 19 and a horizontal groove 20 substantially perpendicular to the vertical groove 19, and applying elastic force to the lower portion 21 of the horizontal groove,
When pulling the first thread 1 with a pick, the slight vibration from the movable upper piece 12 of the vertical moving body 15 that pushes up the first thread 1 can be alleviated together with the elastic force of the compression spring 17. You can expect it to produce a soft, clear, and beautiful tone.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a longitudinal front view, Fig. 3 is a longitudinal side view, and Fig. 4 is a longitudinal front view with the adjustment screw tightened. It is. DESCRIPTION OF SYMBOLS 1... Thread, 2... Outer frame, 3... Flange, 4... Board, 5... Through hole, 6... Adjustment nut, 7... Adjustment screw, 8... Projected plate, 9... Adjustment body, 10...Touching mountain, 11...Protrusion, 12...
Movable upper piece, 13... Holding plate, 14... Contact plate, 1
5...Vertical moving body, 16...Bending piece, 17...Compression spring, 18...Female thread portion, 19...Vertical groove,
20... Horizontal groove, 21... Lower part of the horizontal groove.

Claims (1)

[Scope of utility model registration request] The adjustment screw of the adjustment body is screwed into the lower end of the outer frame that is fitted under the first thread of the milk bag of the stringed instrument, so that it can move forward and backward in the vertical direction via the adjustment nut, and a vertically movable body is installed inside the outer frame. A movable upper piece with a ridge is inserted so that it can be moved up and down so that it can be protruded from the surface of the milk pouch by advancing and retracting the adjusting screw, and a compression spring is interposed between the adjusting screw and the movable upper piece. In the touching device for a stringed instrument, a vertical groove is provided along the female threaded part of the cylindrical core from the upper end of the adjusting nut of the adjusting body to the vicinity of the lower end, and a lateral groove is provided on one side of the upper part of the adjusting nut, and the adjusting nut has a lateral groove that communicates with the vertical groove. A touching device for a stringed musical instrument, characterized in that: is provided substantially at right angles to the longitudinal groove.