Changing key terminal position limiter for key button shape accordion

Abstract

The invention relates to a button-shaped accordion conversion key terminal limiting device, comprising a bracket (1) and a limiting mechanism (2), the bracket (1) being installed on the sound board (3) of the accordion, and the limiting mechanism (2) There are two covers, and every set of limit mechanism (2) comprises a voice-changing movable sheet (21), an upper pull-out rod (22), a roller shaft (23), a lower pull-out rod (24), a sound-changing valve plate (25), a limiter Bit frame (26), fork (27), spring (28) and fork seat (29), one end of the phonation movable piece is connected with the phonation key of the accordion, and the other end is hinged with one end of the upper puller, and the upper puller The other end is fixedly connected with the roller, and the roller is installed on the two supports. One end of the lower lever is fixed with the roller (23), the other end is hinged with the end of the sound changing valve plate (25), and one end of the limit frame (26) is connected with the The roller (23) is fixed, the other end is hinged with the fork, the fork is hinged with the fork seat (29), the fork seat (29) is installed on the soundboard (3), and the spring (28) is sleeved on the fork ( 27) on. After the device is added, every time a tone-changing key is pressed, the best position can be accurately reached, so that the player can avoid problems such as channeling and automatic sound-changing when using it.

Description

Technical field: [0001] The invention relates to a button-shaped accordion, in particular to a button-shaped accordion transforming key terminal limiter, which is mainly used for the tone sequence transformation of the button-shaped accordion tonic changer. It belongs to the technical field of musical instruments. Background technique: [0002] Before the present invention was made, the pitch change of the tonic tone changer of the traditional button-shaped accordion was usually positioned by a single-sided spring. Displacement, there are disadvantages such as insufficient opening or lax closing of the sound changing valve, resulting in channeling or insufficient volume in the performance. Invention content: [0003] The object of the present invention is to overcome the above-mentioned disadvantages, and provide a button-shaped accordion changing key terminal limiting device which can avoid problems such as channeling and automatic sound changing when the player is using...

AI Technical Summary

Problems solved by technology

[0002] Before the present invention was made, the pitch change of the tonic tone changer of the traditional button-shaped accordion was usually positioned by a single-sided spring. Displacement, there are disadvantages such as insufficient opening or lax closing of the sound changing valve, resulting in channeling or insufficient volume in the performance, etc.

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