Anti-jamming whistle

Abstract

The invention discloses an anti-jamming whistle, and belongs to the technical field of kinematics and acoustics, the anti-jamming whistle comprises a whistle body, the whistle body comprises a whistle cover plate and a lower cavity, the whistle cover plate is arranged on one side of the lower cavity, the lower cavity comprises a whistle body, a whistle tongue and a whistle tail, and the outer side of the whistle body is fixedly connected to one end of the whistle tongue. According to the invention, the whistle balls automatically avoid the clamping stagnation position of the air outlet during movement, so that the ball clamping phenomenon caused by outward exhaust force generated by the air outlet in the movement track of the traditional perfect circle cavity is fundamentally eliminated, the risk of dumb whistles is completely eradicated, and the whistle balls with different sizes are allowed to be used in the same whistle cavity; the whistle adopts a high-frequency automatic melting full-sealing and dead-corner-free welding method, the air leakage problem of a traditional whistle is solved, the whistle sound stability is enhanced, meanwhile, the whistle ball adopts a natural log material, and the outer surface of the whistle ball is coated with a hydrophobic and oleophobic coating, so that the whistle ball is more environment-friendly. And the rolling resistance and the viscosity can be effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of kinematics and acoustics, in particular to an anti-stuck whistle. Background Art

[0002] As a simple and loud sound-making tool, whistles are widely used in many fields such as sports events, outdoor activities, emergency rescue, military and police training, and daily activities organization. Among them, the ball-type whistle has become one of the mainstream whistle types because it can produce a unique and mellow vibrato under specific airflow conditions, which greatly enhances the penetration and recognition. Traditional rolling ball whistles usually adopt a perfect circular whistle cavity structure. The whistle ball is driven by airflow to roll in a circle in the cavity and constantly collide with the whistle cavity wall to disturb the airflow and make sound. There are some defects in use: the symmetrical structure of the perfect circular cavity and the air outlet can easily cause the whistle ball to get stuck in the air outlet when gravity or airflow changes, blocking the airflow channel and causing a dumb whistle. Especially in a humid environment, the whistle ball surface absorbs water vapor and adheres to the cavity wall, further increasing the risk of getting stuck. In addition, the traditional whistle cavity requires the whistle ball diameter to strictly match the whistle cavity size, and is not compatible with whistle balls of different sizes, limiting the range of tone adjustment. In addition, traditional whistles are prone to produce micro-gaps at the joints of the whistle body, side panels and whistle cover, causing air leakage and affecting the stability of the whistle sound. At the same time, the whistle ball surface easily absorbs water vapor and grease, resulting in reduced freedom of the whistle ball to roll. Summary of the Invention

[0003] The object of the present invention is to provide an anti-stuck whistle to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an anti-stuck whistle, comprising a whistle body, the whistle body comprising a whistle cover plate and a lower cavity, the whistle cover plate being arranged on one side of the lower cavity, the lower cavity comprising a whistle body, a whistle tongue and a whistle tail, the outer side of the whistle body being fixedly connected to one end of the whistle tongue, the lower cavity comprising a whistle cover, a protrusion and a side plate, the whistle cover being arranged on the upper side of the whistle tongue, and the side of the whistle cover close to the whistle body being fixedly connected to the side plate, and the whistle body and the side plate are combined to form a whistle cavity, a whistle ball being arranged in the whistle cavity, and the whistle ball circulates and rolls in the whistle cavity to convert a steady airflow into an intermittent airflow; As a further preferred embodiment of the present technical solution: the whistle tail is fixedly mounted on the outer side of the whistle body away from the whistle tongue, and the whistle tail is used to provide a fixing point for the whistle rope; As a further preferred embodiment of the present technical solution: an air outlet is provided at the upper end of the whistle body, and the air outlet is used to discharge the air blown into the whistle cavity; As a further preferred embodiment of the present technical solution: the circumference of the air outlet is provided with edges, and the edges are respectively fixedly provided on the whistle body and the side plate, and the edges are used to discharge the airflow; As a further preferred embodiment of the present technical solution: a protrusion is fixedly mounted on the upper side of the whistle cover to prevent the whistle from falling out, and the protrusion is arc-shaped, the whistle tongue and the whistle cover are welded together to form an air inlet, and the air inlet is wide at the front and narrow at the back, gradually converging the airway to increase the air flow rate; As a further preferred embodiment of the present technical solution: the connection between the whistle tongue and the whistle body is arc-shaped, and the air outlet has an asymmetric guide slope structure, and the side of the whistle body close to the air outlet is lower on the left and higher on the right; As a further preferred embodiment of the present technical solution: the whistle ball is round, and the material of the whistle ball is natural wood, and the outer surface of the whistle ball is coated with a hydrophobic and oleophobic coating.

[0005] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the non-circular whistle cavity structure is combined with the asymmetric guide slope design of the air outlet to guide the airflow to directionally impact the edges and drive the whistle ball to roll in a circle along a specific trajectory, so that the whistle ball automatically avoids the stuck position of the air outlet during movement, fundamentally eliminating the ball jamming phenomenon caused by the outward exhaust force generated by the air outlet in the traditional circular cavity movement trajectory, eliminating the risk of dumb whistle, and the asymmetric slope enhances the vortex intensity of the airflow impacting the edges, combined with the resonance of the whistle cavity to amplify the sound pressure, significantly improving the brightness and fullness of the whistle sound.

[0006] In the present invention, the non-circular cavity structure is set up to break the traditional limitation on the diameter of the whistle ball, allowing the use of whistle balls of different sizes in the same whistle cavity. The small-diameter ball produces a high-pitched sharp whistle, and the large-diameter ball produces a low-pitched and thick whistle, thereby meeting the diverse sound requirements of different user scenarios. The whistle adopts a high-frequency automatic melting, fully sealed, and dead-angle-free welding method, which solves the problem of air leakage in traditional whistles and enhances the stability of the whistle sound. The whistle ball adopts a natural wood outer surface and is coated with a hydrophobic and oleophobic coating, which can effectively reduce rolling resistance and viscosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the three-dimensional structure of the anti-stuck whistle of the present invention; Figure 2 Schematic diagram of the partial cross-section structure of the anti-stuck whistle of the present invention; Figure 3 This is a schematic diagram of the three-dimensional explosion structure of the anti-stuck whistle of the present invention; Figure 4 Schematic diagram of the gas flow direction of the anti-stuck whistle of the present invention; Figure 5 Schematic diagram of the non-circular cavity of the anti-stuck whistle of the present invention; Figure 6 Schematic diagram of the perfect circular cavity of an ordinary whistle.

[0008] Legend: 10, whistle cover; 20, lower cavity; 101, whistle body; 102, whistle tongue; 103, whistle cover; 104, protrusion; 105, air inlet; 106, air outlet; 107, whistle tail; 108, side panel; 109, whistle cavity; 110, whistle ball; 111, edge. DETAILED DESCRIPTION

[0009] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0010] See also Figures 1-6 As shown, the present invention provides a technical solution: an anti-stuck whistle, comprising a whistle body, the whistle body comprising a whistle cover plate 10 and a lower cavity 20, the whistle cover plate 10 is arranged on one side of the lower cavity 20, the lower cavity 20 comprises a whistle body 101, a whistle tongue 102 and a whistle tail 107, the outer side of the whistle body 101 is fixedly connected to one end of the whistle tongue 102, the lower cavity 20 comprises a whistle cover 103, a protrusion 104 and a side plate 108, the whistle cover 103 is arranged on the upper side of the whistle tongue 102, and the side of the whistle cover 103 close to the whistle body 101 is fixedly connected to the side plate 108, and the whistle body 101 and the side plate 108 are combined to form a whistle cavity 109, a whistle ball 110 is arranged in the whistle cavity 109, and the whistle ball 110 circulates and rolls in the whistle cavity 109 to change a steady airflow into a fluctuating airflow; In this embodiment, specifically: the whistle tail 107 is fixedly mounted on the outer side of the whistle body 101 away from the whistle tongue 102, and the whistle tail 107 is used to provide a fixing point for the whistle rope; In this embodiment, specifically: an air outlet 106 is provided at the upper end of the whistle body 101, and the air outlet 106 is used to discharge the air blown into the whistle cavity 109; In this embodiment, specifically: the circumference of the air outlet 106 is provided with an edge 111, and the edge 111 is fixedly provided on the sentry body 101 and the side plate 108, and the edge 111 is used to discharge airflow; In this embodiment, specifically: a protrusion 104 is fixedly mounted on the upper side of the whistle cover 103 to prevent the whistle from falling out, and the protrusion 104 is arc-shaped. The whistle tongue 102 and the whistle cover 103 are welded together to form an air inlet 105, and the air inlet 105 is wide at the front and narrow at the back to gradually close the airway to increase the air flow rate; In this embodiment, specifically: the connection between the whistle tongue 102 and the whistle body 101 is arc-shaped, and the air outlet 106 has an asymmetric guide slope structure, and the side of the whistle body 101 close to the air outlet 106 is lower on the left and higher on the right; In this embodiment, specifically: the whistle ball 110 is round, and the material of the whistle ball 110 is natural wood, and the outer surface of the whistle ball 110 is coated with a hydrophobic and oleophobic coating.

[0011] Working principle or structural principle: When using, pinch the whistle with your hand and place it near your mouth. The upper lip covers the upper side of the whistle cover 103, and the lower lip covers the lower side of the whistle tongue 102. A protrusion 104 is provided on the upper side of the whistle cover 103, and the whistle tongue 102 is bent downward near the lower lip. The protrusion 104 and the downwardly bent whistle tongue 102 can prevent the whistle from falling out of the user's mouth when using it, and can increase the air tightness when holding it in the mouth. The user blows gas, and the gas flows into the air inlet 105 formed by the welded seal between the whistle tongue 102 and the whistle cover 103. The air inlet 105 is wide at the end close to the lips and narrow at the end close to the whistle cavity 109, which can increase the flow rate of the gas and form a high-speed directional jet. The gas flows to the edges 111 set on the sentinel body 101 and the side plate 108. The edges 111 divide the exhaust gas and allow the gas to enter the sentinel cavity 109. The high-speed airflow impacts the whistle ball 110, driving the whistle ball 110 to roll at high speed in the sentinel cavity 109 formed by welding the sentinel body 101 and the side plate 108. The whistle ball 110 implements double disturbance to the airflow during movement. The whistle ball 110 repeatedly blocks and releases the air outlet 106 during rolling, cutting the continuous airflow into a pulse sequence. When the whistle ball 110 rolls in the sentinel cavity 109, the whistle ball 110 collides with the inner wall of the sentinel body 101 and the side plate 108. Collision: Broadband impact noise is generated at the moment of collision. The rolling of the whistle ball 110 disrupts the steady-state airflow in the whistle cavity 109. The movement of the whistle ball 110 periodically blocks the air outlet 106, changing the cross-sectional area of ​​the airflow. The whistle ball 110 collides with the whistle body 101 and the inner wall of the side plate 108, causing a sudden change in the airflow velocity, inducing high-speed turbulence near the air outlet 106. When the turbulent flow passes through the edge 111, periodic vortex shedding is generated due to fluid-solid coupling, forming a fundamental tone of a specific frequency. When the sound waves generated by the collision noise and turbulence are repeatedly reflected in the cavity and the frequency matches the resonance frequency of the cavity, the sound pressure is significantly amplified, and a whistle sound is radiated. The whistle cavity 109 is a non-circular whistle cavity 109, and the air outlet 106 has an asymmetric guide slope structure, which is low on the left and high on the right. The airflow is directionally guided to impact the edge 111, thereby enhancing the vortex strength, allowing the whistle ball 110 to circulate smoothly and automatically avoid the air outlet 106 to prevent the air outlet 106 from being stuck. The asymmetric guide slope guides the airflow to preferentially impact the edge 111, while preventing the whistle ball 110 from being stuck. It can ensure that turbulent energy is efficiently converted into sound energy. The shape of the whistle ball 110 is round, and the material of the whistle ball 110 is natural wood, which makes the whistle ball 110 light, high temperature resistant and waterproof, and can generate elasticity when heated. The outer surface of the whistle ball 110 is coated with a hydrophobic and oleophobic coating, which can reduce the viscosity caused by water vapor and grease adsorption, reduce surface viscosity, and improve rolling freedom. By setting up a non-circular cavity, an asymmetric slope and a height difference of lower on the left and higher on the right, it is ensured that whistle balls 110 of different sizes can move freely and smoothly without getting stuck. When a whistle ball 110 with a smaller diameter is used, it usually tends to produce a higher-pitched, sharper and crisper whistle sound, while when a whistle ball 110 with a larger diameter is used, it tends to produce a lower-pitched, thicker and deeper whistle sound, thereby satisfying whistle sounds of different frequencies according to user needs.

[0012] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anti-stuck whistle, comprising a whistle body, characterized in that: The whistle body comprises a whistle cover plate (10) and a lower cavity (20), wherein the whistle cover plate (10) is arranged on one side of the lower cavity (20), and the lower cavity (20) comprises a whistle body (101), a whistle tongue (102) and a whistle tail (107), wherein the outer side of the whistle body (101) is fixedly connected to one end of the whistle tongue (102), and the lower cavity (20) comprises a whistle cover (103), a protrusion (104) and a side plate (108). The whistle cover (103) is arranged on the upper side of the whistle tongue (102), and the side of the whistle cover (103) close to the whistle body (101) is fixedly connected to the side plate (108), and the whistle body (101) and the side plate (108) are combined to form a whistle cavity (109), and a whistle ball (110) is arranged in the whistle cavity (109), and the whistle ball (110) circulates and rolls in the whistle cavity (109) to convert a steady airflow into an intermittent airflow.

2. The anti-stuck whistle according to claim 1, characterized in that: The whistle tail (107) is fixedly mounted on the outer side of the whistle body (101) away from the whistle tongue (102), and the whistle tail (107) is used to provide a fixing point for the whistle rope.

3. The anti-stuck whistle according to claim 1, characterized in that: An air outlet (106) is provided at the upper end of the whistle body (101), and the air outlet (106) is used to discharge the air blown into the whistle cavity (109).

4. The anti-stuck whistle according to claim 3, characterized in that: The air outlet (106) is provided with edges (111) around its periphery, and the edges (111) are fixedly arranged on the whistle body (101) and the side plate (108), respectively, and the edges (111) are used to discharge airflow.

5. The anti-stuck whistle according to claim 1, characterized in that: A protrusion (104) is fixedly mounted on the upper side of the whistle cover (103) to prevent the whistle from falling out, and the protrusion (104) is arc-shaped. The whistle tongue (102) and the whistle cover (103) are welded together to form an air inlet (105), and the air inlet (105) is wide at the front and narrow at the back to gradually close the airway to increase the flow rate of air.

6. The anti-stuck whistle according to claim 1, characterized in that: The side plates (108) are symmetrically provided in two groups, and the two symmetrically provided groups of side plates (108) are respectively fixedly welded to both sides of the sentry body (101).

7. The anti-stuck whistle according to claim 3, characterized in that: The connection between the whistle tongue (102) and the whistle body (101) is arc-shaped, and the air outlet (106) has an asymmetric flow-guiding slope structure, and the side of the whistle body (101) close to the air outlet (106) is lower on the left and higher on the right.

8. The anti-stuck whistle according to claim 1, characterized in that: The whistle ball (110) is circular, and the material of the whistle ball (110) is natural wood, and the outer surface of the whistle ball (110) is coated with a hydrophobic and oleophobic coating.

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