JPS6241354Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a piano damper mechanism having a straight damper wire.

Originally, in the case of a piano, the strings were slanted relative to the keyboard as shown in Figure 1, in order to ensure the strings were as long as possible and to widen the area of the soundboard to ensure the volume effect. .

On the other hand, in order for a piano's damper mechanism to perform its function, when a damper that can be moved into and out of the strings comes into contact with the strings, it must be in contact with the strings with the same pressure in the longitudinal direction without any gaps. It is essential.

However, as shown in Figures 1 and 2, in the conventional damper mechanism, due to the design of the piano, as is clear from the above explanation, misalignment between the keyboard core and the strings is unavoidable, so the damper lever 14
and the string 4 are no longer substantially parallel to each other, and the tip of the damper lever is no longer on the axis of the vertical upper end 7' of the damper wire 7, so that when the damper 5 is brought into contact with the string 4, each damper 5, In order to ensure that the damper wires 7 are in contact with each other with the same pressure in the longitudinal direction without any gaps, the damper wires 7 are bent one by one by hand, based on the intuition of a highly skilled person, over a long period of time. I was going by doing that. For this reason,
This has the drawback that the adjustment work of the damper is delayed and the efficiency of damper installation and damper manufacturing work is not improved.

The purpose of the present invention is to eliminate these drawbacks by providing a damper mechanism that can be manufactured simply and easily by any person without relying on human intuition, while maintaining a certain level of accuracy. a key pivotably supported on a piano body; a damper lever pivotably pivoted on the piano body;
A string disposed above these keys and a damper lever, a damper disposed astride the string so as to be able to come into and out of it, a damper guide installed on the piano body, and a damper that is vertically supported by the damper guide. a damper wire, the damper wire is movable in the vertical direction, and the upper end of the damper wire is fixed to the damper, and the lower end of the damper wire is arranged above the tip of the damper lever. In the piano damper mechanism, the damper lever swings in accordance with the swing of the key and pushes up the lower end of the damper wire based on the swing, wherein the swing surface of the damper lever and the swing of the key are connected to each other. A piano damper mechanism is characterized in that it does not lie on the same plane as the moving surface.

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 in the figure is the damper mechanism body of the piano, and this damper mechanism body 1 includes a damper part 2 and a keyboard part 3.
It is composed of.

The damper part 2 has a string 4 stretched over its upper part, and a damper 5 is provided on the string 4 so as to be freely accessible and detachable via a damper felt 6 affixed to the lower surface of the damper 5. Further, on one side of the damper 5, a vertical upper end 7' of a linear damper wire 7 is provided.
The linear damper wire 7 has a lower end fixed coaxially in the longitudinal direction to the upper end surface of a hexagonal columnar damper wire 8. The damper wire 8 passes through a guide bush 10 fitted in a through hole formed in an upper damper guide 9, and further through a through hole formed in a lower damper guide 11 provided below the upper damper guide 9. The columnar damper wire 8 hangs down by the load of the columnar damper wire 8 itself, passing through the guide bush 13 fitted in the columnar damper wire 8. A damper lever 14 is provided below the columnar damper wire 8 substantially parallel to the string 4. The lever 14 is rotatably supported in the vertical direction on the tip of a support 16 screwed onto the piano body 15 at its rear end. An adjustment screw 17 is located on the axis of the vertical upper end 7' of the wire 7 and screwed onto its upper surface for adjusting the distance from the lower end surface of the columnar damper wire 8. A disk-shaped felt punching 18 is pasted.This felt punching 18 pushes up the lower end surface of the columnar damper wire 8 when the damper lever 14 moves upward.The felt punching 18 is attached to the upper surface. Since it has a predetermined area, the lower end surface of the columnar damper wire 8 can be pushed up within a predetermined range, and the distance between the felt punching 18 and the lower end surface of the columnar damper wire 8 can be adjusted with the adjustment screw 17. The conventional spoon bending work that relies on human intuition is no longer necessary.

Further, on the front side of the damper lever 14, there is a keyboard section 3.
A spoon 20, which can be freely approached and separated, is fixed to the tip of a key 19 constituting the key 19. Furthermore, a back check support 21 is erected on the upper surface of the front end of the key 19. A bag check 22 is fixed to the upper end of the bag check support 21. In addition, in the figure, 23 is a hammer, and 24 is a damper guide rail.

The piano damper mechanism according to this invention includes a key pivotally supported on the piano body, a damper lever pivotally supported on the piano body, and arranged above the keys and the damper lever. a damper provided so as to be able to move toward and away from the string, a damper guide installed in the piano body, and a damper wire supported in the vertical direction by the damper guide, the damper wire being It is movable in the vertical direction, and the upper end of the damper wire is fixed to the damper, and the lower end of the damper wire is disposed above the tip of the damper lever, and the damper lever is connected to the key. In a piano damper mechanism that oscillates according to the oscillation and pushes up the lower end of the damper wire based on this oscillation, the oscillation surface of the damper lever is not on the same plane as the oscillation surface of the key. It is something.

Therefore, even if the string is not parallel to the key, the swinging tip of the damper lever can be placed directly below the damper attachment end of the damper wire. As a result, a straight damper wire can be used.

Therefore, if the piano damper mechanism according to this invention is used, there is no need for the bending work of the damper wire, which requires a high degree of skill, which was required in the past, so anyone can use it easily and easily while maintaining a certain level of accuracy. damper mechanisms can be manufactured.
Furthermore, by making the damper lever parallel to the strings, the damper lever can be easily housed in the piano body. Therefore, by carrying out this invention, the work efficiency in manufacturing damper mechanisms and pianos can be greatly improved.

Thus, the practical value of this idea is enormous.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional damper mechanism, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a perspective view of an embodiment of the present invention, and Fig. 4 is a B in Fig. 3.
-B sectional view. DESCRIPTION OF SYMBOLS 1... Damper mechanism, 4... String, 5... Damper, 7'... Upper end of damper wire, 8... Damper wire, 9, 11... Damper guide (9...
... Upper damper guide, 11 ... Lower damper guide), 14 ... Damper lever, 14' ... Tip of damper lever, 15 ... Piano body, 19
……key.

Claims (1)

[Claims for Utility Model Registration] A key pivotally supported on a piano body, a damper lever pivotally supported on the piano body, and a damper lever disposed above these keys and the damper lever. The piano includes a string, a damper installed so as to be able to move into and out of the string, a damper guide installed in the piano body, and a damper wire supported in the vertical direction by the damper guide, the damper wire being supported in the vertical direction. and the upper end of the damper wire is fixed to the damper, and the lower end of the damper wire is disposed above the tip of the damper lever, and the damper lever is movable when the key swings. In a damper mechanism for a piano that swings according to the movement and pushes up the lower end of the damper wire based on this swing, the swing surface of the damper lever and the swing surface of the key are not on the same plane. The characteristic piano damper mechanism.