Eight-degree key capable of adjusting pitch

Abstract

The utility model discloses an octave key for adjusting pitch, which comprises an electric blowpipe main body, a pitch adjusting device is arranged on the side wall of the electric blowpipe main body, the pitch adjusting device comprises a mounting frame, six fixed shafts are fixedly connected between the two side walls of the mounting frame, and the six fixed shafts are sequentially arranged at equal intervals. The six fixing shafts are sleeved with rollers in a rotating connection mode, five infrared proximity sensors are installed on the bottom side wall of the installation frame, and the five infrared proximity sensors are located below gaps between every two rollers of the six rollers correspondingly. According to the utility model, the step of pressing is omitted, and the fluency of fingers during switching is also increased, so that the problem that high and low pitches cannot be switched in time during playing can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-acoustic musical instruments, in particular to an octave key for adjusting pitch. Background Art

[0002] An electroacoustic instrument is a musical instrument that generates sound through electricity. It includes a housing, a control circuit, and a sound unit disposed inside the housing. Electroacoustic instruments can imitate the sounds of a variety of instruments. They can not only be used as a solo instrument, but can also produce the effect of an entire orchestra ensemble, so they are deeply loved by people.

[0003] When playing a musical instrument, making full use of the switching between treble and bass can achieve a good performance effect. Traditional string instruments can change the pitch by pressing different positions of the strings. When playing electro-acoustic instruments, it is necessary to adjust the treble and bass by pressing corresponding buttons. For example, when playing an electric blowpipe, when a note needs to be raised or lowered by an octave, it is necessary to switch back and forth between different buttons. For example, an electric blowpipe proposed in publication number CN117423325A has a large number of control buttons. Therefore, it may be difficult to press the corresponding buttons in time to switch between treble and bass when the rhythm of the music is fast. Utility Model Content

[0004] The utility model provides an octave key for adjusting pitch, so as to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An octave key for adjusting pitch comprises an electric blowpipe body, a pitch adjusting device is arranged on the side wall of the electric blowpipe body, the pitch adjusting device comprises a mounting frame, six fixed shafts arranged in sequence and at equal intervals are fixedly connected between the two side walls of the mounting frame, rollers are sleeved and rotatably connected on the six fixed shafts, five infrared proximity sensors are installed on the bottom side wall of the mounting frame, and the five infrared proximity sensors are respectively located below the gaps between the six rollers.

[0007] As a further improvement of the technical solution: a control circuit and a sound unit are arranged in the electric blowpipe body, the control circuit comprises a main control chip electrically connected to the sound unit, and the five infrared proximity sensors are all electrically connected to the main control chip.

[0008] As a further improvement of the technical solution: the side walls of the two rollers in the middle of the six rollers are roughened, and the surfaces of the other rollers are smooth.

[0009] As a further improvement of the technical solution: the installation frame is arranged in a rectangular box shape with an opening at the top.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The device is equipped with six rollers. The performer can slide his fingers into different gaps between the six rollers, which will be identified by the corresponding infrared proximity sensors to switch between high and low notes. This not only saves the step of pressing, but also increases the fluency of the fingers when switching, thus avoiding the problem of not having enough time to switch between high and low notes during performance.

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of the electric blowpipe proposed by the utility model;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of an octave key for adjusting pitch proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the installation frame proposed by the utility model;

[0017] Figure 4 It is a working principle diagram of the control circuit in the utility model;

[0018] Figure 5 This is a schematic diagram of a top view structure of an octave key for adjusting pitch proposed by the utility model;

[0019] Figure 6 The utility model is a schematic diagram of a side cross-sectional structure of an octave key for adjusting pitch.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Electric blowpipe body; 2. Installation frame; 3. Drum; 4. Fixed shaft; 5. Infrared proximity sensor; 6. Main control chip; 7. Sound unit. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figures 1 to 6 In an embodiment of the utility model, an octave key for adjusting pitch comprises an electric blowpipe body 1, a pitch adjusting device is arranged on the side wall of the electric blowpipe body 1, the pitch adjusting device comprises a mounting frame 2, the mounting frame 2 is in the shape of a rectangular box with an opening at the top, six fixed shafts 4 arranged in sequence and at equal intervals are fixedly connected between the two side walls of the mounting frame 2, rollers 3 are rotatably connected to the six fixed shafts 4, five infrared proximity sensors 5 are installed on the bottom side wall of the mounting frame 2, the five infrared proximity sensors 5 are respectively located below the gaps between the six rollers 3, a control circuit and a sound unit 7 are arranged in the electric blowpipe body 1, the control circuit comprises a main control chip 6 electrically connected to the sound unit 7, and the five infrared proximity sensors 5 are electrically connected to the main control chip 6.

[0026] Specifically, the side walls of the two rollers 3 in the middle of the six rollers 3 are rough, and the surfaces of the other rollers 3 are smooth. Because the six rollers 3 can form a total of five gaps opposite to each other, and the five gaps correspond to five octave controls, when the finger slides a roller 3 up or down from the surface of the two rough rollers 3 in the middle, the sound can be controlled to rise or fall by an octave respectively, and continuing to slide a roller 3 up or down can control the second rise / fall of the sound.

[0027] The working principle of the utility model is:

[0028] When a finger is located between any two rollers 3, the infrared proximity sensor 5 below the two rollers 3 can detect the approach of the finger, and the infrared proximity sensor 5 generates an electrical signal to the main control chip 6, and then the main control chip 6 can control the sound unit 7 to change the pitch after receiving the electrical signal; the six rollers 3 can form a total of five gaps facing each other, and the five gaps correspond to five octaves of control;

[0029] When playing the electric blowpipe body 1, the player can slide his fingers to the position between the two rollers 3 to change the pitch of the sound. When switching between high and low notes, the player only needs to slide his fingers back and forth between different rollers 3, which not only saves the step of pressing, but also increases the fluency of the fingers when switching, thereby avoiding the problem of not having enough time to switch between high and low notes during performance.

[0030] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. An octave key for adjusting pitch, comprising an electric blowpipe body (1), characterized in that: A pitch adjustment device is provided on the side wall of the electric blowpipe body (1), and the pitch adjustment device comprises a mounting frame (2), six fixed shafts (4) arranged in sequence and at equal intervals are fixedly connected between the two side walls of the mounting frame (2), and rollers (3) are sleeved and rotatably connected on the six fixed shafts (4), and five infrared proximity sensors (5) are installed on the bottom side wall of the mounting frame (2), and the five infrared proximity sensors (5) are respectively located below the gaps between the six rollers (3).

2. An octave key for adjusting pitch according to claim 1, characterized in that: The electric blowpipe body (1) is provided with a control circuit and a sound unit (7), the control circuit comprises a main control chip (6) electrically connected to the sound unit (7), and the five infrared proximity sensors (5) are all electrically connected to the main control chip (6).

3. An octave key for adjusting pitch according to claim 1, characterized in that: The side walls of two rollers (3) in the middle of the six rollers (3) are rough, and the surfaces of the other rollers (3) are smooth.

4. An octave key for adjusting pitch according to claim 1, characterized in that: The installation frame (2) is arranged in a rectangular box shape with an open top.

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