String rust removal device for grand piano

A technology for pianos and strings, which is applied in the field of rust removal devices for strings, which can solve the problems of string tension error and impact on sound quality, and achieve the effect of simple and convenient use and good rust removal effect

CN110718202AInactive Publication Date: 2020-01-21张胜男
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a string rust removal device for a grand piano. The device comprises a piano plate and a piano pedal, wherein multiple pairs of fixing blocks used for fastening strings are fixed on the piano plate; sliding slots are formed at the positions, below the strings, in the piano plate; a cylindrical cavity is formed under each sliding slot; a piston is arranged in each cylindrical cavity to divide the cylindrical cavity into a first cavity and a second cavity; a sliding rod is fixed between left and right inner walls of each cylindrical cavity; each sliding rod penetrates through the corresponding piston; a first spring is arranged on the part, positioned in the corresponding second cavity, of the corresponding sliding rod in a sleeving manner; an elastic air bag is bonded to the lower end of the piano pedal; the air outlet end of the elastic air bag communicates with each first cavity via an air inlet pipe; and a ball valve and a check valve are installed in each airinlet pipe. The device is reasonable in structure, capable of removing rust without dismounting the strings, simple and rapid to operate, and capable of rapidly and effectively scraping rusty spots on the outer side walls of the strings
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Description

technical field

[0001] The invention relates to the technical field of grand pianos, in particular to a rust removal device for strings of a grand piano. Background technique

[0002] The grand piano is used for large-scale performances or professionals. The structure consists of six parts: string row, soundboard, bracket, keyboard system (including black and white keys and hammers), pedal mechanism (including top rod and pedal) and shell. .

[0003] The main material of the piano strings is low carbon steel, which is easy to rust in a humid environment. Two necessary conditions for metal rust: oxygen and water (generally refers to the moisture in the air). The more moisture in the air the metal is in contact with, the faster it will rust. The strings of the piano are exposed, and it is easy to rust when exposed to the outside air. The rusted strings generally do not affect the sound quality, but if the degree of rust is large, the impact on the sound quality is also great...

Examples

Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

[0020] refer to Figure 1-4 , a rust removal device for strings of a grand piano, comprising a piano board 1 and a piano pedal 10, a plurality of pairs of fixed blocks 3 for tightening strings 6 are fixed on the piano board 1, and the piano board 1 is located at the position below the strings 6 There is a chute 5, a cylindrical cavity is arranged under the chute 5, a piston 16 is arranged in the cylindrical cavity, and the piston 16 divides the cylindrical cavity into a first cavity 28 and a second cavity 9. A sliding rod 18 is fixed between the left and right inner walls, the sliding rod 18 penetrates the piston 16, the first spring 8 is s...