CN216928012U

CN216928012U - String pressing strip for piano

Info

Publication number: CN216928012U
Application number: CN202123115161.XU
Authority: CN
Inventors: 刘浪
Original assignee: Ningbo Beilun Musical Instrument Accessories Manufacturing Co ltd
Current assignee: Ningbo Beilun Musical Instrument Accessories Manufacturing Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-08
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a string pressing strip for a piano, which has the technical scheme that the string pressing strip comprises a long string pressing strip body, wherein a convex strip is arranged on one side surface of the string pressing strip body and is arranged along the length direction of the string pressing strip body; the cross section of sand grip is the arc surface, press string strip body to set up in a plurality of bolt hole, the bolt hole passes the sand grip, the cross section of sand grip is the semicircle face, the bolt hole deviates from the one end of sand grip and has seted up first chamfer, press string strip body to be equipped with sunken arc incision, the smooth-going connection of arc notched curved surface and the curved surface of sand grip, adopt sand grip pressfitting musical instrument string, and the width of sand grip is far less than the width of pressing string strip, make the contact surface of sand grip and string reduce to some extent, the accurate nature of musical instrument sound has been improved.

Description

String pressing strip for piano

Technical Field

The present invention relates to a component of a piano, and more particularly, it relates to a string-pressing bar for a piano.

Background

The string pressing strip is a component in a string tensioning system of the upright piano, bolt holes are formed in the center line of the existing string pressing strip, then fixing bolts penetrate through the bolt holes, the string pressing strip is fixed on an iron skeleton or a string shaft plate, and positioning and installation of the string pressing strip are completed. The top of the cross section of pressing the string body is the straight line, and the bottom is the circular arc, and the circular arc of bottom is in order can whether laminate with the string more to it is effectual to compress tightly the string.

A Chinese patent document with the application number of CN201621249168.7 is searched, and the name of the Chinese patent document is a vertical piano string pressing strip, namely, musical instrument strings are pressed by utilizing the arc part of the string pressing strip; the span of the arc surface of the traditional string pressing strip is large, the binding surface of the arc part and the string in the string pressing strip is large, and the string is easy to sound and loses accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a string pressing strip for a piano, which adopts a convex strip to press strings, and the width of the convex strip is far smaller than that of the string pressing strip, so that the contact surface of the convex strip and the strings is reduced, and the accuracy of piano sound is improved.

The technical purpose of the utility model is realized by the following technical scheme:

a string pressing strip for a piano comprises a long-strip string pressing strip body, wherein a convex strip is arranged on one side surface of the string pressing strip body and is arranged along the length direction of the string pressing strip body; the cross section of each convex strip is an arc surface, the maximum width of each arc surface is 1/4-1/3 of the width of each string pressing strip body, each string pressing strip body is arranged in a plurality of bolt holes, and the bolt holes penetrate through the convex strips.

By adopting the technical scheme, the principle of the design is that the convex strips are arranged above the string pressing strip body, strings are pressed by the convex strips instead of the traditional mode that the strings are pressed by the arc-shaped side faces of the string pressing strip body, and the advantage that the width of the convex strips is only 1/4-1/3 of the width of the string pressing strip body is achieved, so that the contact surface of the convex strips and the strings is far smaller than the pressing mode of the traditional string pressing strip, and the accuracy of musical instrument sound is improved.

The transverse base surface of the convex strip is an arc surface, so that the contact surface of the convex strip and the string pressing strip is smooth.

Secondly, the bolt is screwed, and string pressfitting string is pressed in the extrusion, and the sand grip is passed to the bolt hole in this design for the extrusion force of bolt is concentrated in the sand grip position, makes the power of sand grip extrusion string more stable, and string is pressed and is difficult for rotating along the arc surface of sand grip, to the stable pressfitting effect of string, is favorable to accurate musical instrument sound stable output.

Preferably, the cross section of the convex strip is a semicircular surface, and the diameter of the semicircular surface is 3 mm.

Through adopting above-mentioned technical scheme, the diameter is that the semicircle of 3mm is comparatively excellent to the extrusion effect of string, pressfitting string that can be stable.

Preferably, the bolt hole deviates from the one end of sand grip and has seted up first chamfer.

Through adopting above-mentioned technical scheme, the spiral hole is passed in the spiral of being convenient for to the setting of first chamfer.

Preferably, the string pressing strip body is provided with a sunken arc-shaped cut, and the curved surface of the arc-shaped cut is smoothly connected with the curved surface of the convex strip.

By adopting the technical scheme, the arc-shaped notch enables the space on one side of the convex strip to be enlarged, so that one side of the convex strip has more visual space; after string pressing bar pressfitting string, if need check whether have the foreign matter between string pressing bar and the string, can put in the position of arc incision through the mirror, the mirror surface can reflect the pressfitting condition between string pressing bar and the string to the mirror surface through the notched space of stepping down of arc, supplies to transfer the qin teacher to observe.

Preferably, the number of the convex strips on the string pressing strip body is multiple.

Preferably, the number of the convex strips on the string pressing strip body is 3, and the tails of two adjacent convex strips are staggered with each other along the length direction of the string pressing strip body.

Through adopting above-mentioned technical scheme, the position on the piano of the string of different timbres is different, consequently adopts 3 sand grips so that the string of pressfitting different positions.

Preferably, the side of pressing string strip body deviating from the sand grip is equipped with the second chamfer.

Through adopting above-mentioned technical scheme, the second chamfer can cooperate with the arc incision for the mirror of observing can be more smooth and easy putting at the arc incision for the position.

Drawings

FIG. 1 is a schematic view showing the positional relationship of a convex strip on a string pressing strip in example 1;

FIG. 2 is a schematic view showing the positional relationship of the first chamfer on the string pressing bar in embodiment 1;

FIG. 3 is a schematic diagram showing the positional relationship of 3 convex strips on the string pressing strip in example 2;

in the figure: 1. pressing string body; 2. a convex strip; 3. bolt holes; 4. a first chamfer; 5. an arc-shaped notch; 6. and (7) second chamfering.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Embodiment 1, a string pressing strip for a piano, refer to fig. 1-2, including an elongated string pressing strip body 1, a side surface on the string pressing strip body 1 is provided with a convex strip 2, the string pressing strip body 1 and the convex strip 2 are cast, the material is cast iron, and yellow anti-rust paint is prevented from being painted.

The convex strips 2 are arranged along the length direction of the string pressing strip body 1; the cross section of the convex strip 2 is a semicircular surface, the diameter of the semicircular surface is 1/4 of the width of the string pressing strip body 1, and the diameter of the semicircular surface is 3 mm. The string pressing strip body 1 is arranged in 6 bolt holes 3, the 6 bolt holes 3 are arranged in the string pressing strip body 1 in an equidistant mode in the length direction, and the bolt holes 3 vertically penetrate through the convex strips 2. First chamfer 4 has been seted up to the one end that bolt hole 3 deviates from sand grip 2.

Pressing string strip body 1 is equipped with sunken arc incision 5, and the curved surface of arc incision 5 and the smooth-going connection of curved surface of sand grip 2. The side of pressing string strip body 1 deviating from sand grip 2 is equipped with second chamfer 6.

The theory of operation, the sand grip 2 of string strip will be pressed towards the string, the arc surface and the string of sand grip 2 are contradicted, then pass the bolt hole 3 with the bolt, after the bolt is screwed, will press the string strip to compress tightly sand grip 2, realize pressing the purpose that the string strip compressed tightly the string, this design adopts more thin and small sand grip 2 and string to contradict for the contact surface between string strip and the string reduces to some extent, has reduced the vibration transmission of string to string strip, makes the musical instrument sound of string more accurate.

Embodiment 2, a string pressing bar for a piano, is different from embodiment 2 in that, referring to fig. 3, the number of the convex strips 2 on the pressing bar body 1 is 3, and the tails of two adjacent convex strips 2 are staggered with each other along the length direction of the pressing bar body 1.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims

1. The utility model provides a string pressing strip for piano, includes rectangular form string pressing strip body (1), characterized by: one side surface of the string pressing strip body (1) is provided with a convex strip (2), and the convex strip (2) is arranged along the length direction of the string pressing strip body (1); the cross section of each convex strip (2) is an arc surface, the maximum width of each arc surface is 1/4-1/3 of the width of each string pressing strip body (1), each string pressing strip body (1) is arranged in a plurality of bolt holes (3), and the bolt holes (3) penetrate through the convex strips (2).

2. The string presser for a piano of claim 1, wherein: the cross section of the raised line (2) is a semi-circular surface, and the diameter of the semi-circular surface is 3 mm.

3. The string presser for a piano of claim 1, wherein: a first chamfer (4) is arranged at one end of the bolt hole (3) deviating from the convex strip (2).

4. The string presser for a piano of claim 1, wherein: pressing string strip body (1) is equipped with sunken arc incision (5), and the curved surface of arc incision (5) and the smooth-going connection of curved surface of sand grip (2).

5. The string presser for a piano of claim 1, wherein: the number of the convex strips (2) on the string pressing strip body (1) is multiple.

6. The string presser for a piano of claim 5, wherein: the number of the convex strips (2) on the string pressing strip body (1) is 3, and the ends of two adjacent convex strips (2) are staggered with each other along the length direction of the string pressing strip body (1).

7. The string presser for a piano of claim 1 or 4, wherein: and a second chamfer (6) is arranged on the side surface of the string pressing strip body (1) deviating from the raised line (2).