Warning speed-measuring wind chime

Abstract

The utility model relates to a bicycle warning device, in particular to a warning speed-measuring wind chime, which comprises a wind pressure accelerating tube, a vortex generating fan blade, a sounding tube, a front chime body, a rear chime body and a fixing device. The wind pressure accelerating tube can achieve the purpose of accelerating air in a tube cavity through the thickness change of the tube diameter, and negative pressure can be generated at an outlet of the wind pressure accelerating tube according to the Venturi effect; the vortex generating fan blades can change the air flowing direction, vortex similar to Rankine combination is generated in the bell body, the vortex is low in internal pressure and high in external pressure, and air pressure generated in the two forms acts on the elastic pieces on the wall of the sounding tube to enable the sounding tube to vibrate and drive the bell body to sound. According to the warning speed-measuring wind chime, the elastic pieces are arranged on the bearing body, so that the generated vibration force is different, the wind speed changes from small to large to enable the elastic pieces to vibrate in sequence and make different sounds, and therefore, the warning speed-measuring wind chime not only can provide warning sounds, but also can feed back the speed of the bearing body through the real-time wind speed, and is good in applicability.

Description

Technical Field

[0001] The utility model relates to a bicycle warning device, in particular to a warning speed measuring wind chime. Background Art

[0002] The speed of a bicycle is generally between 16 and 32 kilometers per hour, and the speed of a road bicycle may reach 30 to 48 kilometers per hour or even higher. In order to warn passers-by, the commonly used method is to install a manual bicycle bell.

[0003] However, current warning devices more or less require human intervention to achieve the warning effect. In some cases, when the vehicle speed is very fast, the rider needs to operate in a short time. Due to the difference between the operating speed and the reaction speed, it often fails to play a warning role in many scenarios. Secondly, the rider has no awareness of his own speed and needs a tool to feedback the instant speed. However, in many scenarios, people cannot feedback the instant speed by observing the instrument. Therefore, it is particularly important to manufacture a device with automatic warning sound, timely feedback of the instant speed and stable sound. Utility Model Content

[0004] In order to solve the above problems or at least partially solve the above problems, an embodiment of the utility model provides a warning speed measuring wind chime that automatically warns passers-by and prompts cyclists of their riding speed. It is based on the combined action of the Venturi effect and the vortex pressure difference. A wind pressure acceleration tube is provided inside, which can increase the flow velocity of the incoming flow on the windward side by changing the thickness of the tube cavity, thereby generating negative pressure at the air outlet. The outer ring is provided with vortex generating blades, which can change the direction of the incoming flow on the windward side and generate a Rankine-like combined vortex in the bell body. The vortex pressure distribution is large on the outside and small on the inside. The two pressures act on the sound tube shrapnel at the same time and in the same direction to make it vibrate and make a sound. Due to the different thickness of each shrapnel, different shrapnel can vibrate and make sounds under different wind pressures, thereby feedback the speed of the cyclist.

[0005] The utility model embodiment provides a warning speed measuring wind chime, comprising a wind pressure acceleration tube, a vortex generating fan blade, a sound tube, a front bell body, a rear bell body, and a fixing device.

[0006] The wind pressure acceleration tube is fixed inside the vortex generating blades, and the vortex generating blades are fixed inside the front bell body; the sound tube is fixed inside the rear bell body, and the sound tube includes a spring piece, a ventilation hole, and a tube body. The wind pressure acceleration tube is a funnel-shaped circular tube, with the thick end placed on the windward side and the thin end placed on the leeward side. The sound tube is a trapezoidal circular tube, with the thin end placed on the windward side and the thick end fixed inside the rear bell body. The tube wall of the sound tube is from thin to thick when viewed from the cross section. The thickness of the spring piece is equal to that of the tube body, and is arranged in a ring shape on the tube body. The ventilation hole is synchronous with the spring piece and is arranged in a ring shape on the tube body. The front bell body is fixed above the fixing device, and the rear bell body is fixed to the front bell body by threads. The thin end of the wind pressure acceleration tube is inserted into the sound tube, not exceeding the junction of the spring piece and the ventilation hole, and the tube wall of the wind pressure acceleration tube and the sound tube is matched and connected at the junction.

[0007] In some embodiments, the front bell body, the rear bell body, and the sound tube are made of a sound-prone medium.

[0008] And / or, the number of the spring pieces is multiple, not limited to 6, and the number of the ventilation holes is equal to the number of the spring pieces.

[0009] Compared with the prior art, the technical solution provided by the embodiment of the utility model has the following advantages:

[0010] The embodiment of the utility model provides a warning speed measuring wind chime based on the combined action of the Venturi effect and the vortex pressure difference, which does not require energy from other sources and is automatically completed by the change of speed during the riding process of the cyclist;

[0011] When the vehicle speed reaches a certain expected speed, a warning sound can be provided without manual operation, and different sounds can be used to remind the rider of the current vehicle speed, so it has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the utility model, and together with the description, are used to explain the principles of the embodiments of the utility model.

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is an exploded view of the warning speed measuring wind chime described in the embodiment of the utility model;

[0015] Figure 2This is a side section view of the warning speed measuring wind chime described in the embodiment of the utility model;

[0016] Figure 3 This is a side view of the warning speed measuring wind chime according to an embodiment of the utility model;

[0017] Figure 4 This is a front view schematic diagram of the internal structure of the warning speed measuring wind chime according to an embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the back side of the internal structure of the warning speed measuring wind chime according to an embodiment of the utility model;

[0019] Figure 6 This is a cross-sectional view of the sound pipe of the warning speed measuring wind chime according to the embodiment of the utility model;

[0020] Figure 7 This is a front view of the warning speed measuring wind chime described in an embodiment of the utility model.

[0021] Among them, 1. wind pressure acceleration tube; 2. vortex generating blades; 3. sound tube; 4. front bell body; 5. rear bell body; 6. fixing device; 31. shrapnel; 32. ventilation hole; 33. tube body. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the scheme of the embodiments of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the utility model, but the embodiments of the utility model can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the utility model, rather than all of the embodiments.

[0024] like Figure 1 As shown, this embodiment provides a warning speed measuring wind chime, including a wind pressure acceleration tube 1, a vortex generating fan blade 2, a sound tube 3, a front bell body 4, a rear bell body 5, and a fixing device 6.

[0025] like Figure 2 The wind pressure accelerating tube 1 shown is fixed inside the vortex generating blade 2, the vortex generating blade 2 is fixed inside the front bell body 4, the sound tube 3 is fixed inside the rear bell body 5, and the sound tube 3 includes a spring piece 31, a ventilation hole 32, and a tube body 33.

[0026] like Figure 1 , 2The wind pressure acceleration tube 1 shown in 4, 5, and 6 is a funnel-shaped circular tube, with the thick end placed on the windward side and the thin end placed on the leeward side. The sound tube is a trapezoidal circular tube, with the thin end placed on the windward side and the thick end fixed to the inside of the rear bell body 5. The sound tube 3 has a tube wall from thin to thick when viewed from the front view. The thickness of the spring piece 31 is equal to that of the tube body 33, and they are arranged in a ring on the tube body. The ventilation holes 32 are synchronous with the spring pieces 31 and are arranged in a ring on the tube body 33. The number of ventilation holes 32 and the spring pieces 31 are equal.

[0027] like Figure 1 , 2 5, the front bell body 4 is fixed on the top of the fixing device 6, the rear bell body 5 is fixed to the front bell body 4 by screw threads, the thin end of the wind pressure acceleration tube 1 is inserted into the sound tube 3, not exceeding the junction of the spring piece 31 and the ventilation hole 32, and the pipe wall of the wind pressure acceleration tube 1 and the sound tube 3 are connected at the junction.

[0028] When implementing it, refer to Figure 2 , 4 As shown in , 5, 6, and 7, the front flow enters the thin end through the thick end of the wind pressure acceleration tube 1 and flows out, and the fluid velocity at the outlet increases. According to the Venturi effect, the pressure around the outlet decreases. At this time, the spring 31 on the sound tube 3 is subjected to an inward pressure.

[0029] When the front incoming flow passes through the vortex generating blades 2, the fluid in the rear bell body 5 makes a vortex motion and is discharged through the ventilation hole 32. This vortex is similar to a Rankine combination vortex, with a strong external pressure and a small internal pressure. At this time, the spring 31 on the sound tube 3 is subjected to an inward pressure.

[0030] The combined force generated by the two ways acts on the spring 31 on the sound tube 3 and makes it vibrate to produce sound, and the sound can be transmitted through the rear bell body 5, such as Figure 6As shown, the body 33 of the sound tube 3 is designed from thin to thick, and the thickness of the spring 31 is the same as that of the body 33. The purpose of vibration of springs 31 of different thicknesses can be achieved through different incoming flow speeds, thereby producing different warning sounds. It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The above description is only a specific implementation method of the embodiment of the utility model, so that those skilled in the art can understand or implement the embodiment of the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features of the embodiments of the present invention described herein.

Claims

1. A warning speed measuring wind chime, characterized in that: It comprises a wind pressure accelerating tube (1), a vortex generating blade (2), a sound tube (3), a front bell body (4), a rear bell body (5), and a fixing device (6); The wind pressure accelerating tube (1) is fixed inside the vortex generating blade (2), and the vortex generating blade (2) is fixed inside the front bell body (4); The sound tube (3) is fixed inside the rear bell body (5), and the sound tube (3) comprises a spring piece (31), a ventilation hole (32), and a tube body (33).

2. The warning speed measuring wind chime according to claim 1 is characterized in that The wind pressure acceleration tube (1) is a funnel-shaped circular tube, with the thick end placed on the windward side and the thin end placed on the leeward side; the sound tube is a trapezoidal circular tube, with the thin end placed on the windward side and the thick end fixed inside the rear bell body (5); the sound tube (3) has a wall from thin to thick in a tangential view; the spring sheet (31) has the same thickness as the tube body (33) and is arranged in an annular shape on the tube body; the ventilation holes (32) are arranged in an annular shape on the tube body (33) synchronously with the spring sheet (31).

3. The warning speed measuring wind chime according to claim 1 is characterized in that The front bell body (4) is fixed above the fixing device (6), and the rear bell body (5) is fixed to the front bell body (4) via threads.

4. The warning speed measuring wind chime according to claim 1, 2 or 3, characterized in that The thin end of the wind pressure acceleration tube (1) is inserted into the interior of the sound tube (3) and does not exceed the junction of the spring sheet (31) and the ventilation hole (32). The tube walls of the wind pressure acceleration tube (1) and the sound tube (3) are in contact at the junction.

5. The warning speed measuring wind chime according to claim 1 is characterized in that The number of the ventilation holes (32) is equal to the number of the spring pieces (31).

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