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Accordion sound hole cover capable of being automatically leveled

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

Inactive Publication Date: 2015-05-13
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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  • Accordion sound hole cover capable of being automatically leveled
  • Accordion sound hole cover capable of being automatically leveled
  • Accordion sound hole cover capable of being automatically leveled

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 capable of being automatically leveled. The accordion sound hole cover capable of being automatically leveled is that a key rod slot connected with a key rod is processed in a sound hole cover body; the section of the key rod slot is in a shape of a revered trapezoidal structure of which the bottom side is relatively short; a transverse bulge which is vertical to the key rod slot is arranged in the middle part of the key rod slot. According to the accordion sound hole cover capable of being automatically leveled, the key rod slot is processed into the trapezoidal structure; the key rod can automatically fall down to the center of the key rod slot according to the self-fastening principle while being assembled to the sound hole cover; the transverse bulge vertical to the key rod is arranged in the middle part of the key rod slot; the key rod pressed into the key rod slot can only be in contact with the transverse bulge according to the lever supporting principle, and therefore, the sound hole cover can be automatically leveled, and the force on an area in which the bottom surface of the sound hole cover is in contact with a sound hole plate is uniform; in addition, stressing points of each sound hole cover are the same. The accordion sound hole cover adopting the structure above is able to automatically level and center, is simple in structure and convenient to operate, can greatly increase the product quality and production efficiency, and has obvious 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 Applications(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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