Accordion bass

Abstract

The invention discloses an accordion bass. The accordion bass comprises a top plate, a top plate pin, a rolling screw, a stand pile and a top rod, wherein the top plate is an integrally molded structure; the top plate pin is a cylindrical structure; an installation hole I corresponding to the position of the top plate pin is formed in the top plate; the top plate pin and the installation hole I are in interference fit; an installation hole II corresponding to the position of the stand pile is formed in the rolling screw, the stand pile and the installation hole II are in interference fit. According to the accordion bass disclosed by the invention, the connecting form of the main transmission parts of the bass is changed into riveting from welding, so that the original aligning work which needs much labor power after manual welding can be completed by pressing after mechanical punching, and thus, the assembly precision is high, the aligning is not needed, the connection is stable, the dismounting and replacing are easy, the assembly is convenient and quick, the precision is high, the maintenance cost is low, the product quality and the production efficiency of the bass can be greatly improved, and the economic value and the social value are remarkable.

Description

technical field [0001] The invention relates to the technical field of accordion parts, in particular to an accordion bass machine. 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. The accordion bass machine is the core part of the accordion, and it is also the part with the most complex structure and the highest process precision requirements. The efficiency and quality of its manufacturing are directly related to the cost and quality of the accordion production. The accordion bass machine is connected by thousands of parts. In the prior art, the top piece and the top piece nail, the rolling thread and the stake and the ejector rod are mainly connected by welding. Due to welding deformation and small parts, it is difficult to locate Assembling wel...

AI Technical Summary

Problems solved by technology

The accordion bass machine is connected by thousands of parts. In the prior art, the top piece and the top piece nail, the rolling thread and the stake and the ejector rod are mainly connected by welding. Due to welding deformation and small parts, it is difficult to locate Assembling welding, the position accuracy of the workpiece after welding is poor, and the transmission system of the bass machine has high requirements on the accuracy of the parts, so it takes a lot of manual adjustment of the parts after assembly welding, resulting in low production efficiency, high cost and poor quality Stablize

In addition, the prior art accordion bass machine needs to be improved in terms of how to reduce the impact of transmission noise on the performance sound quality

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