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An accordion soundhole cover capable of self-levelling

An automatic leveling and accordion technology, applied in the directions of accordions, wind instruments, instruments, etc., can solve the problems of cumbersome sound hole cover leveling procedures, difficult effects, poor effects, etc., achieve significant economic and social value, and improve product quality. And the effect of production efficiency and convenient operation

Inactive Publication Date: 2017-09-15
云南格律乐器制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to the production of the key transmission system is to ensure that the sound hole cover is parallel to the sound hole plate, so that the sound hole cover can be opened and closed evenly under the drive of the key rod, so as to ensure the performance quality. However, in the existing manufacturing technology, due to the irregular key rod Structural parts, making the leveling process of the sound hole cover extremely cumbersome, difficult and ineffective

Method used

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  • An accordion soundhole cover capable of self-levelling
  • An accordion soundhole cover capable of self-levelling
  • An accordion soundhole cover capable of self-levelling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as Figure 1~2 As shown in the present invention, a self-leveling accordion sound hole cover, the sound hole cover body 1 is processed with a key rod groove 3 connected to the key rod 6, and the cross-sectional shape of the key rod groove 3 is bottom An inverted trapezoidal structure with shorter sides, the middle part of the key rod groove 3 is provided with a transverse protrusion 2 perpendicular to the key rod groove 3 .

[0019] When the key rod groove 3 is set as an inverted trapezoidal groove body, since both sides of the key rod groove 3 are sloped surfaces, even if the sound hole cover body 1 is not aligned before installation, when the key rod 6 is pressed down for installation, it will slide down along the slope, thereby Adjust the sound hole cover body 1. Certainly from this principle we know that the width of the bottom edge of the key bar groove 3 must be equal to or slightly greater than the rear diameter or thickness of the key bar 6, and the gap be...

Embodiment 2

[0022] Such as Figure 3-6 As shown in the present invention, a self-leveling accordion sound hole cover, the sound hole cover body 1 is processed with a key rod groove 3 connected to the key rod 6, and the cross-sectional shape of the key rod groove 3 is bottom An inverted trapezoidal structure with shorter sides, the middle part of the key bar groove 3 is provided with a transverse protrusion 2 perpendicular to the key bar groove 3; the two sides of the key bar groove 3 are processed with symmetrical sizing grooves 4 ; One end of the key rod groove 3 is provided with a plug 5, and the sound hole cover body 1 and the plug 5 are integrally formed.

[0023] On the basis of embodiment 1, in this embodiment, symmetrical sizing grooves 4 are processed on both sides of the lateral protrusion 2 of the key rod groove 3, and the lateral depth of the sizing grooves 4 is 1-4mm, and each is a sizing groove 4. The length along the installation direction of the key rod 6 is 5-15 mm. After...

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Abstract

The invention discloses an accordion sound hole cover that can be automatically leveled. The sound hole cover body is processed with a key bar groove connected with the key bar. The cross-sectional shape of the key bar groove is an inverted trapezoidal structure with a short bottom , the middle part of the key rod groove is provided with a transverse protrusion perpendicular to the key rod groove. In the present invention, the key rod groove is processed into a trapezoidal structure, and the self-tightening principle is used to make the key rod and the sound hole cover automatically fall to the center position of the key rod groove when they are assembled, and the middle part of the key rod groove is arranged to be perpendicular to the key rod groove. Horizontal protrusion, using the principle of lever fulcrum, after the key rod is pressed into the key rod groove, it only contacts with the horizontal protrusion, thereby automatically leveling the sound hole cover, so that the force on the contact area between the bottom surface of the sound hole cover and the sound hole plate is even, And the stress point of each sound hole cover is the same. The structure of the invention can be automatically leveled and centered, has a simple structure, is convenient to operate, can greatly improve product quality and production efficiency, and has significant economic value and social value.

Description

technical field [0001] The invention relates to the technical field of accordion parts manufacturing, in particular to an accordion sound hole cover capable of automatic leveling. Background technique [0002] The accordion is a free-reed air-sounding instrument, which relies on the airflow to excite the vibration of the reed to produce sound. It is a good ensemble and accompaniment instrument, and it is also a commonly used instrument in music teaching. However, the structure of the accordion is compact and complex, the process precision is high, and the manufacturing process is cumbersome and lengthy. Usually, one process takes a long time to adjust, the production cost is high, and it is difficult to meet the requirements of professional pianos. The key transmission system of the accordion is a saddle structure, which is composed of keys, key rods, key rod frames, springs and sound hole covers. The base is stuck on the shaft of the key rod frame fixed on the piano case, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10D11/00G10D11/02
Inventor 黄芳
Owner 云南格律乐器制造有限公司
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