CN201518216U

CN201518216U - Cast iron plate used on piano

Info

Publication number: CN201518216U
Application number: CN2009201383621U
Authority: CN
Inventors: 黄三元
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-12
Filing date: 2009-05-12
Publication date: 2010-06-30
Anticipated expiration: 2019-05-12

Abstract

The utility model discloses a cast iron plate used on a piano, wherein an arched corrugated side is arranged under a top projecting portion. Compared with the straight in the prior art, the arched corrugated side in the utility model can improve the tensile strength of the cast iron plate, under the condition that the intonation stability are ensured, the cast iron plate can bear the maximum tension of more than 20 tons, the cast iron plate is not easy to deform integrally, so that the intonation stability of the piano is better and the diapason is wider. Moreover, the arched corrugated side on the cast iron plate is designed so that the three-dimensional effect of the cast iron plate is increased and the cast iron plate has the beautiful effect.

Description

The cast iron plate of using on a kind of piano

Technical field

The utility model relates to the technology of piano structure, and is relevant with the cast iron plate structure on being used in piano.

Background technology

The employed cast iron plate of tradition piano, the below of its top projection all is a straight flange.The tensile strength of the cast iron plate integral body of this structure is lower, under normal operating condition, guarantees that cast iron plate does not deform and accuracy in pitch when relatively stable, and the maximum pull that cast iron plate can bear has only about 15 tons.

In the temperament process, the pulling force that cast iron plate integral body is born very easily invar string pulling force variation and surpass 15 tons, cause the cast iron plate easy deformation, make the interior pulling force of string wire produce fluctuation, finally cause the accuracy in pitch less stable of piano.

Therefore, the cast iron plate structure of traditional piano is improved, prevented distortion, for guaranteeing an important channel of accuracy in pitch stability.

The utility model content

The purpose of this utility model is to provide the cast iron plate of using on a kind of piano, to improve accuracy in pitch stability.

To achieve these goals, solution of the present utility model is:

The cast iron plate of using on a kind of piano, the below of its top projection are arch ripple limit.

The thickness on above-mentioned arch ripple limit is 5～10 millimeters.

In the above-mentioned arch ripple limit, the height of each arch is 3/5～2/3 of cast iron plate top projection itself height.

In the above-mentioned arch ripple limit, respectively corresponding 6～7 groups of string wires of each arch.

After adopting such scheme, the utility model is because form arch ripple limit below the projection of cast iron plate top, with the straight flange in this arch ripple limit replacement conventional art, improved tensile strength, when guaranteeing that accuracy in pitch is stablized, the maximum pull that cast iron plate can bear reaches more than 20 tons, and cast iron plate integral body is not yielding, make the accuracy in pitch stability of piano better, range is wideer.Simultaneously, the arch ripple limit design on the cast iron plate makes the cast iron plate stereoscopic sensation increase, and has aesthetic.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a use synoptic diagram of the present utility model.

Label declaration

1 cast iron plate, 2 arch ripple limits

3 string wires

Embodiment

As shown in Figure 1, be the cast iron plate that the utility model discloses, Fig. 1 is the partial enlarged drawing of Fig. 2, shown in Figure 2 is that the utility model applies to the use synoptic diagram on the piano.

The below of cast iron plate 1 top projection of the present utility model forms arch ripple limit 2, the thickness on arch ripple limit 2 is 5～10 millimeters, the height h of each arch is 3/5～2/3 of the own height H of cast iron plate 1 top projection, respectively corresponding 6～7 groups of string wires 3 of each arch.

Arch ripple of the present utility model limit 2 is compared with the straight flange in the conventional art, and the tensile strength of cast iron plate is improved, and cast iron plate 1 integral body is not yielding, makes the accuracy in pitch stability of piano better, and range is wideer.Simultaneously, 2 designs of arch ripple limit make cast iron plate 1 stereoscopic sensation increase, and have aesthetic.

Claims

1. the cast iron plate of using on the piano, it is characterized in that: the below of top projection is arch ripple limit.

2. the cast iron plate of using on a kind of according to claim 1 piano is characterized in that: the thickness on arch ripple limit is 5～10 millimeters.

3. the cast iron plate of using on a kind of according to claim 1 piano is characterized in that: in the arch arch ripple limit, the height of each arch is 3/5～2/3 of cast iron plate top projection itself height.

4. the cast iron plate of using on a kind of according to claim 1 piano is characterized in that: in the arch ripple limit, and respectively corresponding 6～7 groups of string wires of each arch.