CN210223549U

CN210223549U - Air whistle

Info

Publication number: CN210223549U
Application number: CN201921067514.3U
Authority: CN
Inventors: Xiaoxing Guo; 郭小行; Liqiang Zhu; 朱立强; Jianquan Liang; 梁建全; Jiaying Qin; 秦佳颖; Huaming Li; 李化明; Tongsheng Li; 李童生; Qiufen Qu; 曲秋芬
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-31
Anticipated expiration: 2029-07-09

Abstract

The utility model provides a flute belongs to sound production equipment technical field, including flute seat, sound production structure, loudspeaker, frequency modulation seat and wind regime connecting portion, the utility model provides a flute, during the use, connect wind regime or compressed air source on wind regime connecting portion, in gaseous first air chamber that passes wind regime connecting portion and enter into the flute seat, gaseous and sound production structure interact in first air chamber, make the sound production structure warp and send sound through loudspeaker, the frequency that the deformation of sound production structure and resume forms the sound production frequency of flute, stretch into the space between sound production structure and the frequency modulation seat through adjusting the distance that the frequency modulation seat stretched into the opening chamber for the deflection of sound production structure towards the second air chamber is different, and the time that the sound production structure replied the original shape changes along with second air chamber space size, and then changes the frequency of flute.

Description

Air whistle

Technical Field

The utility model belongs to the technical field of sound generating equipment, more specifically say, relate to a wind flute.

Background

The whistle is an important sound warning device for the rail vehicle, can warn pedestrians and vehicles to avoid trains, and prevents safety accidents from being caused. In order to ensure the performance, safety and reliability of the air whistle, related standard files are set for domestic and foreign rail vehicles, and the performance indexes of the air whistle are defined. The air whistle frequency is the important performance index of air whistle, and current air whistle can't realize the frequency modulation function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a whistle to solve the unable frequency modulated technical problem of whistle that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a wind whistle comprising:

the whistle seat is provided with a hollow cavity for the flowing of air to produce sound;

the sounding structure is arranged in the hollow cavity and is used for dividing the hollow cavity into a first air chamber and an opening cavity;

the horn is fixedly arranged on the whistle seat and is communicated with the sounding structure;

the frequency modulation seat is used for covering the opening cavity and forming a second air chamber between the opening cavity and the sounding structure; the frequency modulation base is movably connected to the air whistle base along the opening direction of the opening cavity;

the wind regime connecting portion is located on the air whistle seat, be located the sound production structure with between the loudspeaker, and with first air chamber intercommunication for let in the air.

Furthermore, an internal thread is arranged on the whistle seat, and an external thread connected with the internal thread is arranged on the outer wall of the frequency modulation seat.

Furthermore, an exhaust hole for exhausting is formed in the frequency modulation seat.

Furthermore, the outer side surface of the frequency modulation seat is of a tooth-shaped structure, and the frequency modulation seat and the air whistle seat are positioned through a first bolt penetrating through the tooth-shaped structure.

Further, the sound emitting structure includes:

the diaphragm is arranged in the hollow cavity and fixed on the whistle seat, and the second air chamber is formed between the diaphragm and the frequency modulation seat;

one end of the sounding nozzle is abutted against one side of the diaphragm, which is far away from the second air chamber, and the other end of the sounding nozzle is fixed on the whistle seat and communicated with the horn;

the diaphragm and the sounding mouth enclose the hollow cavity into a first air chamber.

Further, the diaphragm is kept away from loudspeaker one side is equipped with solid fixed ring, gu be equipped with a plurality of first through-holes on the fixed ring, be equipped with on the diaphragm a plurality of with the corresponding second through-hole of first through-hole, be equipped with in the whistle seat with first through-hole with the corresponding screw hole of second through-hole, the diaphragm with gu fixed ring through passing first through-hole the second through-hole with the second bolt fixed connection of screw hole in on the whistle seat.

Furthermore, one side of the whistle seat close to the horn is provided with a first connecting hole communicated with the first air chamber, the other end of the sounding mouth is fixedly connected with one end of the first connecting hole, and the horn is fixedly connected with the other end of the first connecting hole.

Furthermore, a horn fixing sleeve fixedly connected with a horn is arranged at the other end of the first connecting hole.

Further, the wind source connection part includes:

the second connecting hole is formed in the whistle seat and communicated with the first air chamber;

and one end of the air pipe joint extends into the second connecting hole and is communicated with the first air chamber, and the other end of the air pipe joint is used for connecting an air source.

Furthermore, a filter screen for filtering impurities is arranged in the second connecting hole.

The utility model provides a flute's beneficial effect lies in: compared with the prior art, the utility model discloses the whistle, during the use, connect wind regime or compressed air source on wind regime connecting portion, gaseous first air chamber that passes in wind regime connecting portion enter into the whistle seat, gaseous in first air chamber and sound production structure interact, make the sound production structure warp and send sound through loudspeaker, the frequency of sound production structure's deformation and the frequency that resumes forms the sound production frequency of whistle, stretch into the space between sound production structure and the frequency modulation seat through adjusting the frequency modulation seat the distance in open cavity, make the deflection of sound production structure towards the second air chamber different, the time that the sound production structure replied the original shape changes along with second air chamber space size, and then changes the frequency of whistle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a whistle provided in an embodiment of the present invention;

fig. 2 is a left side view of the whistle provided by the embodiment of the present invention;

fig. 3 is an exploded view of a wind whistle according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. a frequency modulation base; 2. a fixing ring; 3. a membrane; 4. a second bolt; 5. a first gasket; 6. a pronunciation mouth; 7. a whistle base; 8. a first lock nut; 9. a horn fixing sleeve; 10. a horn; 11. a first bolt; 12. a second gasket; 13. a filter screen; 14. an air pipe joint; 15. a card sleeve; 16. a second lock nut; 17. an air exhaust hole; 18. installing a notch; 19. a first connection hole; 20. a second connection hole; 21. a first air chamber; 22. a second air chamber.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3, the flute provided by the present invention will now be described. A wind whistle comprises a wind whistle seat 7, a sounding structure, a loudspeaker 10, a frequency modulation seat 1 and a wind source connecting part, wherein the wind whistle seat 7 is provided with a hollow cavity for gas flowing and sounding; the sounding structure is arranged in the hollow cavity and is used for dividing the hollow cavity into a first air chamber 21 and an opening cavity; the horn 10 is fixedly arranged on the whistle base 7 and communicated with the sounding structure; the frequency modulation base 1 is used for covering the opening cavity and forming a second air chamber 22 between the opening cavity and the sounding structure; the frequency modulation base 1 is movably connected to the whistle base 7 along the opening direction of the opening cavity; the wind source connecting part is arranged on the wind whistle seat 7, is positioned between the sounding structure and the loudspeaker 10, and is communicated with the first air chamber 21 for introducing air.

The utility model provides a flute, compared with the prior art, during the use, connect wind regime or compressed air source on wind regime connecting portion, gas passes in wind regime connecting portion enter into the first air chamber 21 in flute seat 7, gas and sound production structure interact in first air chamber 21, make sound production structure warp and send out sound through loudspeaker 10, the frequency of sound production structure's deformation and recovery forms the sound production frequency of flute, stretch into the space between sound production structure and the frequency modulation seat 1 through adjusting the distance in opening chamber of frequency modulation seat 1, make sound production structure receive the pressure difference after the second air chamber 22 warp, and reach the purpose that the frequency of sound production structure reply original shape changes, and then change the frequency of flute.

The sound production structure is located the cavity intracavity, and with the cavity intracavity for the second air chamber 22 that is close to frequency modulation seat 1 and the first air chamber 21 that is close to loudspeaker 10, the wind regime enters into and makes the sound production structure warp in the first air chamber 21, reaches the purpose of exhaust sound production, and the pressure in the first air chamber 21 is less than the pressure in the second air chamber 22 to the sound production structure resumes the non-deformation state. In the process of continuously inputting the gas, the sounding structure is repeatedly deformed, and the whistle frequency is formed. The size of the second air chamber 22 can be realized by adjusting the frequency modulation base 1 and the depth of the second air chamber 22, the larger the second air chamber 22 is, the longer the period of the sound production structure for recovering deformation is, and the lower the frequency is; on the contrary, the smaller the second air chamber 22, the shorter the period of the sound generating structure recovering deformation, and the lower the frequency, thereby achieving the effect of adjusting the whistle frequency. The adjusting mode is simple and flexible. One side that frequency modulation seat 1 stretched into well cavity is equipped with the mounting groove, be equipped with in the mounting groove with mounting groove sliding fit's extension piece, extend the piece can bulge or withdraw to the mounting groove in, when frequency modulation seat 1 all stretched into still unsatisfied requirement to well cavity, can pull out one end with extending the piece earlier, improve the volume size that occupies of frequency modulation seat 1 in the cavity. The side face of the extension block, which is in sliding fit with the mounting groove, is provided with an elastic bulge, so that the extension block can be clamped conveniently.

Please refer to fig. 1 and fig. 3, as a specific embodiment of the flute provided by the present invention, an internal thread is provided on the flute seat 7, an external thread connected to the internal thread is provided on the outer wall of the frequency modulation seat 1, the frequency modulation seat 1 is connected to the inner wall of the hollow cavity by a thread, the frequency modulation seat 1 can be rotated to control the length of the frequency modulation seat 1 extending into the hollow cavity, so as to change the size of the space between the frequency modulation seat 1 and the sounding structure. The aim of adjusting the air whistle frequency is achieved. After the tuning seat 1 is adjusted, the tuning seat 1 needs to be fixed on the whistle seat 7. The frequency modulation base 1 can be provided with a threaded hole, and the relative positions of the frequency modulation base 1 and the whistle base 7 are fixed through the first bolt 11. The handle can be arranged on the frequency modulation seat 1, so that the frequency modulation seat 1 can be conveniently rotated. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Please refer to fig. 1 to 3, as the utility model provides a flute's a concrete implementation mode, be equipped with the exhaust hole 17 that is used for on the frequency modulation seat 1, gaseous pass wind source connecting portion enter into the cavity intracavity after, gather in the cavity intracavity between sound production structure and loudspeaker 10, the side produces the pressure difference about the sound production structure, right side pressure is big, sound production structure takes place elastic deformation towards frequency modulation seat 1 one side, thereby open sound production structure and sound, make the air current enter into loudspeaker 10 mouths and blow out, and simultaneously, the left gas of sound production structure passes through the exhaust hole 17 and discharges on the frequency modulation seat 1. The cover body used for covering the exhaust holes can be arranged on the frequency modulation base 1, and the cover body is internally provided with a flow guide hole used for guiding gas to flow downwards so as to prevent the gas from erupting to workers.

Please refer to fig. 1 and fig. 2, as a specific embodiment of the flute provided by the present invention, the outer side surface of the frequency modulation base 1 is a tooth-shaped structure 18, the frequency modulation base 1 and the flute base 7 are positioned by the first bolt 11 passing through the tooth-shaped structure 18, the outer side surface of the frequency modulation base 1 is the tooth-shaped structure 18, the flute base 7 is provided with a plurality of threaded holes corresponding to the tooth-shaped structure 18, after the frequency modulation base 1 is rotated, the tooth-shaped structure 18 still has a threaded hole corresponding to the threaded hole on the flute base 7, and the relative position of the rotated frequency modulation base 1 and the flute base 7 is positioned by passing through the tooth-shaped structure 18 and the threaded hole by the first bolt 11. The first bolt 11 is sleeved with the second gasket 12, and the fixing effect of the first bolt 11 is firmer through the second gasket 12.

Referring to fig. 1 and 3, as a specific embodiment of the flute provided by the present invention, the sounding structure includes a diaphragm 3 and a sounding mouth 6, the diaphragm 3 is disposed in the hollow cavity and fixed on the flute seat 7, and forms the second air chamber 22 with the frequency modulation seat 1; one end of the sounding mouth 6 is abutted against one side of the diaphragm 3 far away from the second air chamber 22, and the other end is fixed on the whistle seat 7 and communicated with the horn 10; the membrane 3 and the sound-emitting mouth 6 enclose a hollow cavity as a first air chamber 21. Frequency modulation seat 1 is connected with second air chamber 22, diaphragm 3 sets up the intermediate position in cavity, divide into the second air chamber 22 that is close to frequency modulation seat 1 and the first air chamber 21 that is close to loudspeaker 10 with well cavity, the wind regime enters into and gathers in the first air chamber 21, make diaphragm 3 towards second air chamber 22 elastic deformation, thereby open the connected state between diaphragm 3 and the pronunciation mouth 6, the air current enters into pronunciation mouth 6 through the gap between pronunciation mouth 6 and the diaphragm 3, and make pronunciation mouth 6 sound production, then gas passes pronunciation mouth 6 and is blown out by loudspeaker 10 mouth, simultaneously, the gas in the second air chamber 22 is discharged through exhaust vent 17 on frequency modulation seat 1. After the gas is discharged from the mouthpiece 6, the pressure in the first air chamber 21 is lower than the pressure in the second air chamber 22, and the diaphragm 3 is restored to the non-deformed state. In the process of continuously inputting the wind source, the diaphragm 3 repeats the actions to form the whistle frequency. The size of the second air chamber 22 can be realized by adjusting the screwing depths of the frequency modulation base 1 and the whistle base 7, and the larger the second air chamber 22 is, the longer the period of single elastic deformation of the diaphragm 3 is, and the lower the frequency is; conversely, the smaller the second air chamber 22, the shorter the period of single elastic deformation of the diaphragm 3, and the lower the frequency, thereby achieving the effect of adjusting the whistle frequency. The membrane 3 may be a double membrane 3. The speed of the gas in the first air chamber 21 passing through the sound producing nozzle 6 is higher than that of the gas in the second air chamber 22 passing through the exhaust hole 17, and after the gas is exhausted from the sound producing nozzle 6, the pressure in the first air chamber 21 is lower than that in the second air chamber 22, so that the diaphragm 3 is restored to the non-deformed state. Be equipped with the spacing platform that is used for spacing pronunciation mouth 6 mounted position on the inner wall of well cavity for the cooperation is installed pronunciation mouth 6, makes pronunciation mouth 6 install fast accurate, raises the efficiency. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Referring to fig. 1 and 3, as a specific embodiment of the flute provided by the present invention, a fixing ring 2 is disposed on a side of a diaphragm 3 away from a horn 10, the fixing ring 2 is disposed with a plurality of first through holes, the diaphragm 3 is disposed with a plurality of second through holes corresponding to the first through holes, a screw hole corresponding to the first through holes and the second through holes is disposed in a flute seat 7, the diaphragm 3 and the fixing ring 2 are fixedly connected to the flute seat 7 by a second bolt 4 penetrating through the first through holes, the second through holes and the screw hole, the mounting surface is arranged on the inner wall of the hollow cavity of the whistle seat 7, the diaphragm 3 is firstly propped against the mounting surface, then establish solid fixed ring 2 pressure on diaphragm 3 to make each first through-hole and second through-hole align, use second bolt 4 to pass first through-hole and second through-hole and screw hole, reach the purpose of fixed diaphragm 3, it is better to fix the effect through solid fixed ring 2. And the first gasket 5 is sleeved on the second bolt 4 to enhance the fixing effect. The fixing ring 2 is made of a thin annular sheet made of a thin metal material.

Please refer to fig. 1 and fig. 3, as a specific embodiment of the flute provided by the present invention, one side of the flute seat 7 close to the horn 10 is provided with a first connection hole 19 communicated with the first air chamber 21, the other end of the sounding nozzle 6 is fixedly connected with one end of the first connection hole 19, the horn 10 is fixedly connected with the other end of the first connection hole 19, the sounding nozzle 6 is fixedly connected and communicated with the left end of the first connection hole 19, the horn 10 is fixedly connected and communicated with the right end of the first connection hole 19, the sounding nozzle 6 is communicated with the horn 10 by this way, the air flow enters the sounding nozzle 6 through the gap between the sounding nozzle 6 and the diaphragm 3, and the sounding nozzle 6 sounds, and then the air passes through the first connection hole 19, enters the horn 10 port and is discharged. An internal thread may be provided on an inner wall of the first connection hole 19, and the other end of the sound-emitting nozzle 6 and one end of the horn 10 are provided with an external thread to be matched with the internal thread.

Please refer to fig. 1 and fig. 3, as a specific embodiment of the flute provided by the present invention, a horn fixing sleeve 9 for fixedly connecting with the horn 10 is disposed on the other end of the first connecting hole 19, the outer side surface of the horn fixing sleeve 9 is provided with an external thread, and is in threaded connection with the inner wall of the first connecting hole 19, and then the horn 10 and the horn fixing sleeve 9 are in threaded connection, by which the horn 10 can be conveniently mounted, dismounted, and replaced. The first locking nut 8 is sleeved on the outer side surface of the horn fixing sleeve 9, and the horn fixing sleeve 9 is locked by the first locking nut 8 after being installed in the first connecting hole 19 through the horn fixing sleeve 9. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, as a specific embodiment of the air whistle of the present invention, the air source connecting portion includes a second connecting hole 20 and an air pipe joint 14, the second connecting hole 20 is disposed on the whistle base 7 and is communicated with the first air chamber 21; one end of the air pipe joint 14 extends into the second connecting hole 20 and is communicated with the first air chamber 21, the other end of the air pipe joint is used for connecting an air source, the second connecting hole 20 is arranged to be a stepped hole, one end of the air pipe joint 14 is installed on a stepped surface in the second connecting hole 20, then the air source is directly connected to the other end of the air pipe joint 14 and is inflated into the air pipe joint 14, and the air source can be quickly and firmly connected in the mode. The air pipe joint 14 adopts a tubular structure, a shoulder is arranged on the outer side surface of the tubular structure and is abutted against the whistle seat 7, external threads are respectively arranged at two ends of the tubular structure, one end of the tubular structure extends into the second connecting hole 20 and is connected with the second connecting hole 20, and the external threads at the other end of the tubular structure are sleeved with a second locking nut 16. The clamping sleeve 15 is arranged in the air pipe joint 14, the clamping sleeve 15 is installed in the air pipe joint 14 in a matched mode, and when the air pipe joint 14 is locked through the second locking nut 16, the clamping sleeve 15 is pressed in the air pipe joint 14 through the second locking nut 16 to form effective sealing connection.

Referring to fig. 1 and 3, as a specific embodiment of the whistle provided by the present invention, a filter 13 for filtering impurities is disposed in the second connecting hole 20, and the filter 13 is disposed in the air pipe joint 14, so that when the air source passes through the air pipe joint 14 and the second connecting hole 20, the filter 13 filters part of impurities in the air source, thereby ensuring the normal operation of the whistle. Meanwhile, impurities are reduced from entering the whistle seat 7, the diaphragm 3 can be effectively protected, the sounding mouth 6 is not damaged, the sounding effect of the whistle is improved, and the service life of the whistle is prolonged.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The air whistle, its characterized in that includes:

2. The air whistle of claim 1 wherein the air whistle base has an internal thread, and the frequency tuning base has an external thread on an outer wall thereof, the external thread being in threaded engagement with the internal thread.

3. The air whistle of claim 1 wherein the tuning base is provided with an exhaust hole for exhausting air.

4. The air whistle of claim 1 wherein an outer side surface of the tuning seat is a toothed structure, and the tuning seat and the whistle seat are positioned by a first bolt passing through the toothed structure.

5. The flute according to claim 1, wherein the sound emitting structure comprises:

6. The flute according to claim 5, wherein a fixing ring is provided on a side of the diaphragm away from the horn, the fixing ring is provided with a plurality of first through holes, the diaphragm is provided with a plurality of second through holes corresponding to the first through holes, the flute holder is provided with threaded holes corresponding to the first through holes and the second through holes, and the diaphragm and the fixing ring are fixedly connected to the flute holder by second bolts passing through the first through holes, the second through holes and the threaded holes.

7. The wind whistle of claim 5 wherein a side of the wind whistle base adjacent to the horn is provided with a first connection hole communicating with the first air chamber, the other end of the sounding mouth is fixedly connected with one end of the first connection hole, and the horn is fixedly connected with the other end of the first connection hole.

8. The flute according to claim 7, wherein a horn securing sleeve for securing connection with the horn is provided on the other end of the first connecting hole.

9. The air whistle of claim 1 wherein the wind source connection includes:

10. The air whistle of claim 9 wherein a filter screen for filtering impurities is provided in the second connecting hole.