JPS6331105Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a key lever for a Taishogoto.

Traditional Taishogoto is made by pressing down on the key to force the strings between the lever and the fret.If the strings are not evenly sandwiched between the key lever and the fret line, it will be difficult to produce a clear sound when the strings are plucked. It took a lot of pressure to press the key to release it. Therefore, children, elderly people, and other people who have a weak ability to press down on the keys may not be able to play the instrument satisfactorily. In addition, in order to reduce the amplitude of the string, the space between the lower end of the lever and the upper end of the fret had to be greater than the amplitude of the string, and the distance over which the string could be pushed down was also large. For this reason, when a key is pressed, the tension on the string increases, which tends to distort the sound, and the depth of touch of the key also becomes deeper.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional method, and to press down the key, it does not require strong force as the key is held suspended in the air.Furthermore, since the string is not pressed against the fret side, the touch depth of the key is also reduced. There is also less deviation in pitch due to changes in tension. Another object of the present invention is to provide a key lever for a Taishogoto, which is characterized in that a string holding piece is provided integrally with the key lever or separately from the key lever, with a notch formed in the lower end of the key lever for the string to be inserted in order to prevent the string from sliding sideways.

To explain the illustrated embodiment, reference numeral 1 indicates the main body of the koto, 2 indicates a string stretched on the main body 1, and 3 indicates a key lever.The lower edge of the key lever 3 is a string made of a material that does not absorb vibrations, such as synthetic resin. Attach presser piece 4. This string holding piece 4 has a row of notches 5 on the lower edge into which the string 2 enters, and when the key lever 3 is pressed down, the string is pushed down within the notch 5 of the string holding piece 4, and is pressed down while floating in the air. To prevent the string 2 from slipping sideways even after completion of the string. In the figure, 6 is a spring acting on the key lever 3, and 7 is a spring acting on the key lever 3.
is attached to a support piece 9 suspended from a top plate 8 together with a spring 6 by a shaft rod that serves as a fulcrum for the key lever 3. Reference numeral 10 denotes a receiving member for the string presser piece 4 formed on the upper surface of the main body 1. Although it is designed to prevent the string 2 from being disturbed even if the key lever 3 is pushed down strongly, it does not necessarily have to receive the string presser piece 4. Even if there is no such structure, a structure that receives the key lever 3 may be used. Note that the string holding piece 4 may be provided integrally with the key lever 3, and the notches 5 formed on the lower edge of the string holding piece 4 may be formed in the number of strings 2 as shown in the figure, or in a serrated shape. Sometimes they form in large numbers.

According to the present invention, the strings 2 are not strongly pressed against the main body 1 side, but are held in a suspended state within the notch 5, so that the strings 2 do not shift back and forth, and do not require strong force as in the conventional case. You can operate it without any trouble, and the sound will not become muddy or out of tune. Therefore, it is possible to provide a Taishogoto which is completely different in concept from the conventional Taishogoto, that is, it does not require any frets, which is revolutionary.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a taishokoto equipped with a key lever according to the present invention, FIG. 2 is a front view, and FIG. 3 is a side view of the key lever of the present invention. 1...Body, 2...Strings, 3...Key lever, 4...
...String presser piece, 5...notch.

Claims (1)

[Scope of utility model registration request] A key lever for a Taishogoto, in which a string holding piece is integrally or separately protruded below the lever, and a row of notches into which strings stretched over the main body are inserted are arranged on the lower edge of the string holding piece.