CN219267299U

CN219267299U - Four-row spring sound changer of accordion keyboard

Info

Publication number: CN219267299U
Application number: CN202223362002.4U
Authority: CN
Inventors: 宋旭; 段秀芝
Original assignee: Tianjin Baidi Musical Instrument Co ltd
Current assignee: Tianjin Baidi Musical Instrument Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-06-27
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses an accordion keyboard four-row spring sound changer, which comprises a bottom bracket, four groups of sound changing transmission plates, a key shaft, a plurality of keys and a plurality of three-point poking sticks, wherein the bottom bracket is provided with a plurality of key shafts; the four layers of the base support are provided with sound-changing transmission plates, a key shaft is arranged above the sound-changing transmission plates, a plurality of keys are arranged on the key shaft, a plurality of three-point poking rods are arranged at the bottom of the base support, the three-point poking rods can be driven to rotate by pressing the keys, the three-point poking rods can drive the four groups of sound-changing transmission plates to move, so that different arrangement combinations are generated in the relative position relation among the four layers of sound-changing transmission plates, different keys 4 are pressed, different relative position relations are formed in the four layers of sound-changing transmission plates 2, and therefore different position arrangement combinations are generated through the different keys 4, and the sound holes are further controlled to be freely opened and closed according to syllable arrangement requirements, and different tone colors required by players are achieved.

Description

Four-row spring sound changer of accordion keyboard

Technical Field

The utility model belongs to the technical field of musical instruments, and particularly relates to an accordion keyboard four-row spring sound changer.

Background

The organ body of the accordion is provided with a sound changer, and the part can not emit sound, so that the tone color of the accordion can be changed. The principle is that pressing a key of a transducer changes the pronunciation reed of the accordion in the number of the tone area and the reed, and causes the structure and frequency of high and low tones to change, thereby the accordion produces various tone colors similar to musical instruments such as flute, big pipe, harmonica, black pipe, violin, saxophone, etc.

The traditional accordion sound changer mainly comprises keys, a transmission rod, a pusher dog, a sliding sheet, a transmission lever, a pull belt and the like, wherein the keys with a certain tone are pressed, the pusher dog is driven to rotate by the transmission rod, and the protrusion on the sliding sheet is stirred to enable the sliding sheet to transversely move, so that one end of the transmission lever is pushed, the pull belt arranged on a sound control board is pulled by the other end of the transmission lever, the switching between the opening and the closing of a sound hole is realized, and different reeds in high, medium and low are combined to form different tone changes. The main defect of the structure is that the structure of the pusher dog transmission is complex, the transmission process is complex, the assembly difficulty is high, and the assembly accuracy is low.

In order to solve the problems in the prior art, we propose an accordion keyboard four-row spring sound changer.

Disclosure of Invention

The utility model aims to provide the four-row spring sound changer of the accordion keyboard, which has ingenious design, smooth transmission and accurate assembly.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the four-row spring sound changer of the accordion keyboard comprises a bottom support, four groups of sound changing transmission plates, a key shaft, a plurality of keys and a plurality of three-point poking sticks; a plurality of vertical mounting plates are arranged on the bottom support at equal intervals, and key shaft mounting holes are formed in the upper ends of the mounting plates; a pair of arc holes are oppositely arranged between the mounting plates, a shaft hole is formed between the arc holes, and a strip-shaped hole is formed at one side of the shaft hole; the middle part of the variable-pitch transmission sheet is provided with a plurality of rectangular transmission holes, one side of the variable-pitch transmission sheet is provided with a plurality of strip-shaped control holes with different lengths, and the edge of the other side of the variable-pitch transmission sheet is provided with a plurality of protruding limiting sheets; the three-point poking stick comprises two bending parts and a straight part which are oppositely arranged, and a rotating shaft is arranged at the center of the three-point poking stick; the variable-pitch transmission plate is fixedly arranged on the bottom support in four layers, the installation plate penetrates out of the transmission hole, the key shaft is arranged in a key shaft installation hole of the installation plate, the plurality of keys are installed on the key shaft, the keys are respectively positioned between two adjacent installation plates, key legs are arranged at the bottoms of the keys, and the key legs penetrate into the strip-shaped holes downwards; the rotating shaft of the three-point poking rod is arranged in the shaft hole of the bottom support, two bending parts of the three-point poking rod respectively penetrate through the pair of arc-shaped holes, the outer ends of the two bending parts are respectively in butt joint with the control hole and the limiting piece, and the straight part is positioned below the strip-shaped hole.

Preferably, the transmission holes of the four groups of variable-pitch transmission plates are identical in position, and the number and the position arrangement of the control holes and the limiting plates of the four groups of variable-pitch transmission plates are different.

Preferably, a pull rod joint is arranged on one side of the variable sound transmission sheet, which is close to the control hole.

Preferably, the positions of the pull rod joints on the four groups of variable-sound transmission plates are different.

Preferably, a plurality of groups of separation strips are arranged among the four groups of variable-pitch transmission plates, so that the space among the four layers of variable-pitch transmission plates is kept.

Compared with the prior art, the utility model has the beneficial effects that: through ingenious matching among the three-point poking sticks, the key legs and the tone-changing transmission sheets (specifically, keys drive the key legs to act, the key legs drive the straight parts on the three-point poking sticks to act, the straight parts drive the two bending parts to act, and the two bending parts are under the double limit of the tone-changing transmission sheet control holes and the limiting sheets), the 4-layer tone-changing transmission sheets can form various arrangement combinations of different relative position relations, and then a pull rod technology is adopted, so that the tone holes can be freely opened and closed according to syllable arrangement requirements by a tone control board, and different tone colors required by players can be achieved; simultaneously, the three-point poking rod is arranged on the bottom support through the rotating shaft, and the two bending parts can accurately enter the two arc-shaped holes of the bottom support, so that the assembly is easier to accurately assemble.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the shoe in the present utility model;

FIG. 3 is a schematic view of a structure of a variable-pitch driving plate according to the present utility model;

FIG. 4 is a schematic view of the structure of the shoe of the present utility model after the three-point stick is mounted;

FIG. 5 is a schematic view of the bottom structure of FIG. 4;

FIG. 6 is a schematic diagram of the structure of the shoe according to the present utility model after the key shaft and keys are mounted;

in the figure: 1. a bottom support; 11. a mounting piece; 12. a key shaft mounting hole; 13. an arc-shaped hole; 14. a shaft hole; 15. a bar-shaped hole; 2. a variable sound transmission plate; 21. a transmission hole; 22. a control hole; 23. a limiting piece; 24. a pull rod joint; 3. a key shaft; 4. a key; 41. a key leg; 5. a three-point poking stick; 51. a bending part; 52. a straight portion; 53. a rotating shaft.

Detailed Description

A preferred embodiment of the present utility model will be described with reference to the accompanying drawings, in which technical solutions of the preferred embodiment of the present utility model are clearly and completely described.

Referring to fig. 1, the present utility model includes a base 1, four sets of variable-pitch driving plates 2, a key shaft 3, a plurality of keys 4, and a plurality of three-point sticks 5.

Referring to fig. 2, the bottom support 1 is of a strip structure, a plurality of vertical mounting plates 11 are arranged on the bottom support 1 at equal intervals, as can be seen from fig. 2, rectangular openings are formed on the bottom support 1, then the rectangular openings are bent upwards to form vertical mounting plates 11, and key shaft mounting holes 12 are formed at the upper ends of the mounting plates 11 and are used for mounting key shafts 3; a pair of arc holes 13 are oppositely arranged between the mounting plates 11, a shaft hole 14 is formed between the arc holes 13, the shaft hole 14 is used for mounting the three-point poking rod 5, and a strip-shaped hole 15 is formed in one side of the shaft hole 14.

Referring to fig. 3, a plurality of rectangular transmission holes 21 are formed in the middle of the variable-pitch transmission plate 2, a plurality of bar-shaped control holes 22 with different lengths are formed on one side of the variable-pitch transmission plate 2, and a plurality of protruding limiting plates 23 are arranged on the edge of the other side of the variable-pitch transmission plate 2. As can be seen from fig. 3, the sizes and positions of the transmission holes 21 of the four groups of variable-pitch transmission plates 2 are completely coincident, the numbers and positions of the control holes 22 and the limit plates 23 of the four groups of variable-pitch transmission plates 2 are different, the four layers of variable-pitch transmission plates 2 can relatively move, and different overlapping relations between the control holes 22 and the limit plates 23 can generate various different arrangements and combinations.

Referring to fig. 4 and 5, the three-point stick 5 includes two bending portions 51 disposed opposite to each other, and a straight portion 52, and a rotation shaft 53 is disposed at the center of the three-point stick 3. The three-point poking rod 5 is arranged at the bottom of the bottom support 1, and in the rotating process of the rotating shaft 53, the two bending parts 51 can respectively drive the control hole 22 and the limiting piece 23 to move, and the relative position relationship between the four layers of sound-changing transmission pieces 2 generates different arrangement and combination due to the combined limiting action of the control hole 22 and the limiting piece 23.

Referring to fig. 1 and 6, the variable-pitch transmission plate 2 is fixedly mounted on the base 1 in four layers, the mounting plate 11 extends out from the transmission hole 21, so that a sufficient space for relative movement exists between the four layers of transmission plates, the key shaft 3 is disposed in the key shaft mounting hole 12 of the mounting plate 11, the plurality of keys 4 are mounted on the key shaft 3, the keys 4 are respectively disposed between two adjacent mounting plates 11, key legs 41 are disposed at the bottoms of the keys 4, and the key legs 41 penetrate into the bar holes 15. The rotating shaft 53 of the three-point poking rod 5 is disposed in the shaft hole 14 of the bottom support 1, two bending parts 51 of the three-point poking rod 5 respectively penetrate through the pair of arc-shaped holes 13, the outer ends of the two bending parts 51 respectively butt-joint with the control hole 22 and the limiting piece 23, and the straight part 52 is located below the strip-shaped hole 15. When the key 4 is pressed, the key leg 41 slides in the bar-shaped hole 15 to drive the straight part 52 to move, the straight part 52 drives the three-point poking rod 5 to rotate, and then the two bending parts 51 respectively drive the control holes 22 and the limiting pieces 23 on two sides to move, so that the four groups of variable-tone transmission pieces 2 form a group of relative position relations, different keys 4 are pressed, and the four groups of variable-tone transmission pieces 2 form different relative position relations.

The sound changer is connected with the sound control board in a transmission way through the transmission aluminum box, and different sound holes of the sound control board are accurately opened by the change transmission between the sound changer and the sound control transmission piece 2, so that sound is transmitted out through the sound holes of the sound control board, the sound control board transmission piece freely opens and closes the sound holes according to syllable arrangement requirements, and different tone colors required by players are achieved. Therefore, a pull rod joint 24 is arranged on one side of the variable-tone transmission plate 2 close to the control hole 22, the pull rod joint 24 is connected with a pull rod, and the pull rod drives the opening and closing of the tone hole on the tone control plate through a transmission aluminum box, so that different tone colors are played.

As shown in fig. 3, in order to provide a sufficient moving space for the tie rod joints 24, the tie rod joints 24 on the four groups of the variable-pitch transmission plates 2 are staggered in position so as not to collide with each other.

In addition, a plurality of groups of separation strips 25 are arranged among the four groups of variable-pitch transmission plates 2, so that the space among the four layers of variable-pitch transmission plates 2 is kept.

The working principle of the utility model is as follows: the transmission system of the transducer is composed of four layers of variable-pitch transmission plates 2 with different structures (specifically, different numbers, structures and positions of control holes 22 and limiting plates 23), the variable-pitch transmission plates are arranged on a transducer frame, keys 4 are assembled at fixed positions through key shafts 3, different positions of the four layers of variable-pitch transmission plates can be combined through different keys 4, and then a pull rod technology is adopted, and the transmission plates of the sound control plates can freely open and close the sound holes according to syllable arrangement requirements through pull rod transmission, so that different tone colors required by players are achieved, and the players can freely control during playing. The number of the transducer keys 4 can be 3, 5, 7, 11, 13 and the like according to different models of accordion.

Specifically, when the key 4 is pressed, the key leg 41 moves back and forth in the bar hole 15 of the bottom support 1, and as the straight part 52 of the three-point poking rod 5 is positioned at the bottom of the bar hole 15, the key leg 41 drives the straight part 52 to move, the straight part 52 drives the three-point poking rod 5 to rotate, then the two bending parts 51 respectively drive the control holes 22 and the limiting sheets 23 on two sides to move, and as the structures and positions of the control holes 22 and the limiting sheets 23 on the four-layer sound-changing transmission sheet 2 are different, the two sides are limited together, so that the four-layer sound-changing transmission sheet 2 forms a group of relative position relations; by pressing different keys 4, the four layers of variable-pitch transmission plates 2 form different relative position relations, so that various different position arrangements are generated through different keys 4, and the sound holes can be freely opened and closed according to syllable arrangement requirements by further controlling the sound control plate, thereby achieving different tone colors required by players.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An accordion keyboard four-row spring sound changer which is characterized in that: comprises a bottom support (1), four groups of variable-pitch transmission plates (2), a key shaft (3), a plurality of keys (4) and a plurality of three-point poking sticks (5);

a plurality of vertical mounting plates (11) are arranged on the collet (1) at equal intervals, and key shaft mounting holes (12) are formed in the upper ends of the mounting plates (11); a pair of arc holes (13) are oppositely arranged between the mounting plates (11), a shaft hole (14) is formed between the arc holes (13), and a strip-shaped hole (15) is formed at one side of the shaft hole (14);

a plurality of rectangular transmission holes (21) are formed in the middle of the variable-pitch transmission plate (2), a plurality of strip-shaped control holes (22) with different lengths are formed in one side of the variable-pitch transmission plate (2), and a plurality of protruding limiting plates (23) are arranged on the edge of the other side of the variable-pitch transmission plate (2);

the three-point poking stick (5) comprises two bending parts (51) which are oppositely arranged, and a straight part (52), and a rotating shaft (53) is arranged at the center of the three-point poking stick (5);

the variable-pitch transmission plate (2) is fixedly arranged on the bottom support (1) in four layers, the installation plate (11) penetrates out of the transmission hole (21), the key shaft (3) is arranged in a key shaft installation hole (12) of the installation plate (11), the plurality of keys (4) are arranged on the key shaft (3), the keys (4) are respectively positioned between two adjacent installation plates (11), key legs (41) are arranged at the bottoms of the keys (4), and the key legs (41) penetrate into the strip-shaped holes (15) downwards;

the rotating shaft (53) of the three-point poking rod (5) is arranged in the shaft hole (14) of the bottom support (1), two bending parts (51) of the three-point poking rod (5) respectively penetrate through the pair of arc-shaped holes (13), the outer ends of the two bending parts (51) are respectively in butt joint with the control hole (22) and the limiting piece (23), and the straight part (52) is located below the strip-shaped hole (15).

2. The four-bar spring transducer of an accordion keyboard of claim 1 wherein: the transmission holes (21) of the four groups of variable-pitch transmission plates (2) are identical in position, and the number and the position arrangement of the control holes (22) and the limiting plates (23) of the four groups of variable-pitch transmission plates (2) are different.

3. The four-bar spring transducer of an accordion keyboard of claim 1 wherein: one side of the variable-sound transmission plate (2) close to the control hole (22) is provided with a pull rod joint (24).

4. A four-bar spring transducer for an accordion keyboard as claimed in claim 3, wherein: the positions of the pull rod joints (24) on the four groups of variable-pitch transmission plates (2) are different.

5. The four-bar spring transducer of an accordion keyboard of claim 1 wherein: a plurality of groups of separation strips (25) are arranged between the four groups of variable-pitch transmission plates (2) so as to keep the space between the four layers of variable-pitch transmission plates (2).