JPH10161644A - Taisho lyre - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the slipping of an arm of a keyboard key for surely pressing the strings, and produce a clear and beautiful sound, by laminating an antislipping plate on one side face of a string contact part of a metallic arm of each keyboard key which presses each string. SOLUTION: An antislipping plate 4 is laminated on one side face of a string 1 contact part of a metallic arm 3 of each keyboard key 2 which presses each string 1. The antislipping plate 4 is molded out of plastic such as nylon (polyamide), polyester or the like having high strength, carbon or the like. The antislipping plate 4 is laminated on one side face of the string 1 contact part of the arm 3, preferably on the side face at the string 1 winding side, by one or both of an adhering means by an adhesive, or a press fitting means by a heat treatment. In the case of the press fitting means by the heat treatment, a heat treatment piece of the antislipping plate 4 is inserted into each heat treatment hole of the arm 3, and performing the heat treatment to the point of the heat treatment piece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Taisho koto capable of producing a clear tone and a prolonged sound.

[0002]

2. Description of the Related Art Heretofore, in this type of Taisho koto, the arms of each keyboard key for pressing various strings attached at appropriate intervals to the upper side of each fret and piece on the upper surface of the Taisho koto body are formed only of metal.

[0003]

However, since the arms of each keyboard key are formed only of metal, the various strings that can be pressed during performance are also metal wires. The keys of the keyboard slipped and could not reliably hold the various strings, making it impossible to produce a clear tone and a prolonged sound.

Accordingly, the present invention has been made in view of the above-described problems, and prevents the arms of a keyboard key from slipping and securely presses various strings, thereby providing a clear tone and elongation. It provides Taisho koto that can make sound.

[0005]

In order to solve the above-mentioned problems, the Taisho Koto of the present invention is provided with plastic or carbon made of plastic or carbon on one side of a metal arm of each keyboard key for holding various strings. And the like.

Further, a non-slip plate is attached to one side of the string contact portion of the arm by one of an adhesive means and a crimping means, or both of the adhesive means and the crimping means.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a Taisho koto capable of producing a clear tone and an extended sound will be described with reference to the drawings as an embodiment of the present invention.

As shown in FIGS. 1 and 2, the Taisho koto of the present invention has a metal arm 3 of each keyboard key 2 for pressing various strings 1.
A non-slip plate 4 made of plastic, carbon, or the like is attached to one side of the string 1 contact portion.

That is, the non-slip plate 4 is formed of a strong plastic such as nylon (polyamide) or polyester, carbon, or the like. One side of the winding side (the left side in the figure) is adhered by one of the bonding means using an adhesive and the pressure bonding means using a heat treatment, or both the bonding means using an adhesive and the heat treatment means. In the case of the crimping means by this heat treatment, as shown in FIG.
A pair of heat-treating holes 5 are formed at appropriate intervals in the string 1 abutting portion, and a pair of heat-treating pieces 6 are provided at appropriate intervals at both ends of the side surface of the non-slip plate 4 on the arm 3 side. Each heat treatment piece 6 of the non-slip plate 4 is inserted into each heat treatment hole 5 of the arm 3, and the tip of each heat treatment piece 6 is heat treated.

In the Taisho koto of the present invention, the slits 9 are arranged at appropriate intervals in the left-right longitudinal direction on a support plate 8 attached to the front lower surface of the top plate 7. The inner ends of the metal arms 3 of the keyboard keys 2 attached to the upper sides of the fret 11 and the piece 12 on the upper surface of the keyboard 10 at appropriate intervals are supported via a shaft pin 13 so as to be movable up and down. The hook 14 provided at the inner end of the arm 3 is
Torsion coil spring 15 attached to the rear of the lower surface of top plate 7
It is formed so that it can be resiliently hooked on.

At the time of performance, each keyboard key 2 is depressed with a finger, and the outer end side of the arm 3 is moved downward around the shaft pin 13 while resisting the resilience of the torsion coil spring 15. , So that you can hold various strings 1
Also, when the finger is released from each keyboard key 2, the outer end side of the arm 3 is moved upward by the resilient force of the torsion coil spring 15 around the shaft pin 13, and the arm 3 of each keyboard key 2 is returned to its original position. It returns to the position.

[0012]

As described above, the Taisho koto of the present invention has a non-slip plate 4 made of plastic, carbon, or the like on one side of the metal arm 3 of each keyboard key 2 for pressing the various strings 1.
When the various strings 1 are pressed by the arms 3 of the keyboard keys 2 during performance, there is no metal-to-metal contact as in the past, and a non-slip material such as plastic or carbon is used. Combined with the function of assisting the sliding of the plate 4, the arm 3 of each keyboard key 2 can be prevented from slipping and the various strings 1 can be reliably pressed, so that a clear tone can be obtained. A sound with elongation can be produced reliably.

In this case, the metal arm 3 of each keyboard key 2
When a non-slip plate 4 made of plastic or carbon is wrapped around the whole, the sound becomes dull during the performance and the sound does not extend,
String 1 of metal arm 3 of each keyboard key 2 that holds various strings 1
By attaching the non-slip plate 4 made of plastic, carbon, or the like to only one side of the abutting portion, the sound can be extended at the time of the performance and a lingering sound can be produced.

Further, a non-slip plate 4 is attached to one side of the portion of the arm 3 where the string 1 abuts by using either the bonding means or the pressing means, or both the bonding means and the pressing means, thereby providing close contact. Since the performance is good, it is possible to prevent the slip plate 4 from peeling off from the arm 3 when pressing the various strings 1 during the performance, and to smoothly move the arm 3 of each keyboard key 2 up and down. In this case, even if the non-slip plate 4 is attached to one side of the string 1 contact portion of the arm 3 by either the bonding means or the crimping means, the adhesion is good, but the string 1 contact of the arm 3 is good. When the slip plate 4 is adhered to one side of the portion by both the bonding means and the pressure bonding means, the adhesion is better, and when the various strings 1 are pressed during performance, the slip plate 4 is Needless to say, it is possible to further prevent peeling off from the surface.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing one embodiment of a Taisho koto of the present invention.

FIG. 2 is a partially cutaway plan view of the keyboard key of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 String 2 Keyboard key 3 Arm 4 Slip plate 5 Heat treatment hole 6 Heat treatment piece 7 Top plate 8 Support plate 9 Slit 10 Taishokoto main body 11 Fret 12 Pieces 13 Axis pin 14 Hook claw 15 Torsion coil spring

Claims (2)

[Claims] 1. A Taisho koto characterized in that a non-slip plate made of plastic or carbon is attached to one side of a string contact portion of a metal arm of each keyboard key for pressing various strings. 2. The Taisho koto according to claim 1, wherein a non-slip plate is attached to one side of the string contact portion of the arm by one of an adhesive unit and a crimp unit, or both the adhesive unit and the crimp unit.