Whistle

Abstract

The utility model discloses a whistle. The whistle comprises a whistle body, the front end of the whistle body is provided with a sound outlet, the inner side of the sound outlet is provided with a second air hole, the other inner side of the sound outlet is provided with a first air hole, the first air hole is located in the axial orthographic projection area of the second air hole, and one end of the whistle body is provided with a mouthpiece communicated with the first air hole; a hollow part is arranged at the rear end of the whistle body, the whistle further comprises a sealing cover, the sealing cover covers the hollow part, and a resonant cavity is formed between the sealing cover and the hollow part; the mouthpiece, the first air hole, the second air hole, the resonant cavity and the sound outlet form an airflow channel; according to the utility model, the sealing cover and the whistle body can be manufactured and installed independently, and a user can flexibly adjust the shape and the space size of the resonant cavity according to actual requirements by replacing sealing covers with different shapes or sizes, so that the volume and the tone of sound are optimized; by means of the design, the problem that in the prior art, acoustic performance cannot be adjusted due to the fact that the resonant cavity is fixed is solved.

Description

Technical Field

[0001] This utility model relates to the field of whistle technology, and in particular to a whistle. Background Technology

[0002] As a functional sound-generating tool, the application scenarios of whistles have gradually expanded from traditional sports refereeing and emergency signals to areas such as gifts, children's toys, and brand promotion.

[0003] Whistles include, but are not limited to, a sealing cap and a whistle body, with a resonant cavity formed between them. Currently, the sealing cap and whistle body are usually molded as a single piece. This one-piece molding results in a fixed shape and size of the resonant cavity, making it difficult to adjust according to actual needs. When it is necessary to change the volume or timbre of the sound, the entire mold needs to be redesigned and manufactured, which is not only costly but also time-consuming. Because the shape and size of the resonant cavity are fixed, the resonance effect of the sound cannot be optimized through simple adjustments, making it difficult to achieve optimal acoustic performance. Once the shape or size of the resonant cavity needs to be adjusted, the entire mold may need to be redesigned and manufactured, which not only increases production costs but also extends the production cycle. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a whistle that can effectively solve the problems existing in the prior art.

[0005] The technical solution of this utility model is:

[0006] According to one aspect of the present invention, the whistle body includes: a sound outlet at its front end, a second air hole on the inner side of the sound outlet, and a first air hole on the other inner side, wherein the first air hole is located within the axial orthogonal projection area of ​​the second air hole; a mouthpiece communicating with the first air hole at one end of the whistle body; a hollow portion at the rear end of the whistle body; and a sealing cover, wherein the sealing cover is disposed on the hollow portion, and a resonant cavity is formed between the sealing cover and the hollow portion; the mouthpiece, the first air hole, the second air hole, the resonant cavity, and the sound outlet form an airflow channel.

[0007] Furthermore, the rear end face of the whistle body has a mounting portion that fits into the sealing cover.

[0008] Furthermore, the mounting portion is provided with a plurality of positioning grooves, and the sealing cover is correspondingly provided with a plurality of positioning protrusions, the plurality of positioning grooves cooperating with the plurality of positioning protrusions.

[0009] Furthermore, the sealing cap is fixedly connected to the whistle body with adhesive.

[0010] Furthermore, the whistle body is a polypropylene (PP), polyethylene (PE), or ABS engineering plastic product.

[0011] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0012] Firstly, the sealing cap and whistle body in this invention can be manufactured and installed independently. By replacing the sealing cap with different shapes or sizes, users can flexibly adjust the shape and size of the resonant cavity according to actual needs, thereby optimizing the volume and timbre of the sound. This design avoids the problem of acoustic performance not being adjustable due to the fixed resonant cavity in the prior art. In the prior art, adjusting the resonant cavity requires redesigning and manufacturing the entire mold, which is costly and time-consuming. This invention, through its split design, can optimize the sound by adjusting the shape of the sealing cap and the resonant cavity without remanufacturing the mold, significantly reducing production costs and shortening the production cycle.

[0013] Secondly, the shape of the mounting part matches the sealing cover, and the combination of the positioning groove and the positioning protrusion ensures quick and accurate alignment between the sealing cover and the whistle body. The positioning protrusion and positioning groove facilitate assembly and ensure complete alignment between the mounting part of the sealing cover and the whistle body, preventing air leakage or sound quality deviation due to misalignment of the resonant cavity. The positioning protrusion and positioning groove are fixed with glue, providing double protection for the airtightness of the resonant cavity and ensuring stable sound resonance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the front end face of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the rear end face of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the present invention with the sealing cap removed. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention with the sealing cap removed. Figure 2 ;

[0019] In the diagram: Whistle body-1, mouthpiece-11, sound outlet-12, first air hole-13, second air hole-14, hollow part-15, positioning groove-16, mounting part-17, sealing cover-2. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] like Figures 1 to 4 As shown, this solution provides a whistle.

[0022] Please see Figures 1 to 4 The system includes: a whistle body 1, which is made of polypropylene (PP), polyethylene (PE), or ABS engineering plastic. The whistle body 1 has a sound outlet 12 at its front end, a second air hole 14 on the inner side of the sound outlet 12, and a first air hole 13 on the other inner side, with the first air hole 13 located within the axial orthogonal projection area of ​​the second air hole 14. One end of the whistle body 1 has a mouthpiece 11 communicating with the first air hole 13. The rear end of the whistle body 1 has a hollow portion 15 and a sealing cover 2, which covers the hollow portion 15, forming a resonant cavity between the sealing cover 2 and the hollow portion 15. The mouthpiece 11, the first air hole 13, the second air hole 14, the resonant cavity, and the sound outlet 12 form an airflow channel. Furthermore, the axis of the mouthpiece 11 is collinear with the axis of the first air hole 13. By precisely aligning the mouthpiece 11 and the first air hole 13, energy loss during airflow transmission is reduced, avoiding turbulence or noise caused by misalignment, thereby improving sound production efficiency and sound quality stability.

[0023] Please see Figure 3 The rear end face of the whistle body 1 has a mounting portion 17 that fits into the sealing cover 2. The mounting portion 17 has a plurality of positioning grooves 16, and the sealing cover 2 correspondingly has a plurality of positioning protrusions (not shown). The positioning grooves 16 and the positioning protrusions cooperate with each other. The sealing cover 2 is fixedly connected to the whistle body 1 with adhesive. The shape of the mounting portion 17 fits into the sealing cover 2, and the cooperation of the positioning grooves 16 and the positioning protrusions ensures quick and accurate alignment between the sealing cover and the whistle body 1. The positioning protrusions and grooves facilitate assembly and ensure complete alignment between the sealing cover 2 and the mounting portion 17 of the whistle body 1, preventing air leakage or sound quality deviation due to misalignment of the resonant cavity. The positioning protrusions and grooves are fixed with adhesive, providing double protection for the airtightness of the resonant cavity and ensuring stable sound resonance.

[0024] Of course, decorative parts such as brand logos, embossed patterns, movable parts, and reflective strips can also be fixed on the outside of the whistle body 1 to improve the aesthetics of the product. Customized decorative parts can also be used to convey brand information.

[0025] Working principle:

[0026] When a user blows air through the nozzle 11, the airflow passes through the first air hole 13 and the second air hole 14 in sequence. Since the first air hole 13 is located within the axial orthogonal projection area of ​​the second air hole 14, the airflow enters the resonant cavity through the second air hole 14. The airflow forms a vortex and generates vibration in the resonant cavity. After the vibration is amplified by the resonant cavity, the airflow exits from the second air hole 14 and finally emits sound from the sound outlet 12. The shape and sealing of the resonant cavity affect the volume and pitch, while the relative position of the first air hole 13 and the second air hole 14 optimizes the airflow efficiency, making the sound more stable and louder.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A whistle, characterized in that, include: The whistle body (1) has a sound outlet (12) at its front end, a second air hole (14) inside the sound outlet (12) and a first air hole (13) on the other inner side, with the first air hole (13) located in the axial orthogonal projection area of ​​the second air hole (14). One end of the whistle body (1) has a mouthpiece (11) communicating with the first air hole (13). The rear end of the whistle body (1) has a hollow part (15) and also includes a sealing cover (2). The sealing cover (2) covers the hollow part (15), and a resonance cavity is formed between the sealing cover (2) and the hollow part (15). The mouthpiece (11), the first air hole (13), the second air hole (14), the resonance cavity, and the sound outlet (12) form an airflow channel.

2. A whistle as described in claim 1, characterized in that, The rear end face of the whistle body (1) has a mounting part (17) that fits into the sealing cover (2).

3. A whistle as described in claim 2, characterized in that, The mounting part (17) is provided with a plurality of positioning grooves (16), and the sealing cover (2) is provided with a plurality of positioning protrusions accordingly, and the plurality of positioning grooves (16) cooperate with the plurality of positioning protrusions.

4. A whistle as described in claim 2 or 3, characterized in that, The sealing cap (2) is fixedly connected to the whistle body (1) by glue.

5. A whistle as described in claim 1, characterized in that, The whistle body (1) is a polypropylene (PP), polyethylene (PE) or ABS engineering plastic product.

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