JPS6318053Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a keyboard holding part and a hammer rail part for an upright piano.

That is, the cross-sectional shapes of the piano keyboard holder and the hammer rail are the same, a hammer rail fork mounting hole is provided on one end surface, and a hammer rail cloth is pasted on the other end surface. The part to which the hammer rail fork is attached becomes the hammershank stop part, and when used as a keyboard holder, the part to which the hammer rail cross is affixed becomes the keyboard holder felt, and the hammer rail fork mounting hole also serves as the keyboard holder's mounting hole. This is a hammer rail that doubles as a piano keyboard holder.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, FIG. 1A shows a conventional keyboard holder, and FIG. 1B shows a conventional hammer rail.

The surface of the keyboard holder 11a is coated with a coating film 12a. Further, a keyboard presser felt 3a is glued to the lower surface. Also, there are holes 4a for attaching the keyboard holder at both ends.
have.

On the other hand, the conventional hammer rail 11b is molded from aluminum extrusion, the surface is painted or coated with an alumite treatment film 12b, a hammer rail cloth 3b is adhered, and the hammer rail fork attachment hole 4b is formed.

In this way, the keyboard presser 11a and the hammer rail 1
1b is a completely different member, but the present invention makes the keyboard holder 21a and the hammer rail 21b common by making the cross-sectional shapes the same as shown in FIGS. It is something that can be provided. Also, the conventional keyboard presser 1 shown in Fig. 1
1a is a processed wood product, so it depends on the material of the wood.
Furthermore, the dimensional stability was poor due to twisting and warping due to humidity, but the present invention also solves these drawbacks. That is, as shown in Figure 2 a and b,
The keyboard holder 21a and the hammer rail 21b have the same cross-sectional shape and are made of a metal plate (mainly a steel plate) by press bending such as roll press molding or forming.

Necessary items, such as the keyboard presser felt 3a and the hammer rail cross 3b, are glued to the same processed part, and the keyboard presser mounting holes 4a and the hammer rail fork mounting holes 4b are located at the same predetermined locations as shown in FIG. ing. However, it should be noted that the right and left ends of the keyboard holder 21a of the present invention are connected to the hammer rail 21.
This corresponds to the left and right ends of b, so by reversing the right and left sides, it becomes the regular mounting shape for the hammer rail. Furthermore, when attaching the keyboard presser foot 21a to the piano's clapboard, use the keyboard presser mounting bracket 5.
It will be attached via a. Or, if you want to attach the keyboard holder to the keyboard lid (or colophon), you will need to attach it directly.

As described above, this invention makes two different parts have the same shape, so the production quantity can be doubled and a mass production effect can be expected.In addition, the material is changed from aluminum to steel plate, etc., and if the surface is used as a keyboard holder, it can be painted or hammered. In the case of rails, they can be functional if treated with galvanizing or painting. It has an excellent appearance and can provide a cost reduction effect.

Experimentally, there were no particular problems acoustically with the shape shown in Figure 2, but depending on the thickness of the board, soundproofing paint for resonance prevention or soundproofing materials such as various foam resins or PVC may be applied to the inside of the bend. It is also possible to use synthetic resin coating materials.

[Brief explanation of the drawing]

Figure 1a is a side view of a conventional keyboard presser, Figure 1b
2 is a side view of a conventional hammer rail, FIG. 2a is a side view of a keyboard presser according to an embodiment of the present invention, and FIG. 2b is a side view of a conventional hammer rail.
FIG. 2 is a side view of a keyboard holder according to an embodiment of the present invention in which a hammer rail is used. 21a...Keyboard holder, 21b...Hammer rail, 3a...Keyboard holder felt, 3b...Hammer rail cloth, 4a...Keyboard holder mounting hole, 4
b……Hammer rail fork mounting hole.

Claims (1)

[Scope of utility model registration request] The cross-sectional shape of the piano key presser and hammer rail are the same, a hammer rail fork mounting hole is provided on one end, and a hammer rail cloth is attached to the other end. When used as a hammer rail,
The part where the hammer rail cloth is attached becomes the hammer shank stop part, and when used as a keyboard presser, the part where the hammer rail cloth is attached becomes the keyboard presser felt,
A piano keyboard presser/hammer rail, characterized in that the hammer rail fork mounting holes are also used as mounting holes for a keyboard presser.