KR20010073019A - Sound producing apparatus - Google Patents

Abstract

An acoustic generator 20 for disguising firecrackers is disclosed. The device includes an aerosol 24 that can be selectively operated and the chamber 35 inside the aerosol is filled with a pressurized fluid, which blows the cap 38 and reaches a large amount of colored paper 39 when a constant pressure is reached. And cause great loud roar. In another embodiment, a plurality of elastic elements ruptured by compressed air and optionally openable compressed fluid containers formed from the housing of the device are used to produce similar effects.

Description

Sound generating device {SOUND PRODUCING APPARATUS}

Fireworks and firecrackers form an integral part of many Chinese celebrations, including Chinese New Year, Opening Ceremony and Birthday. Recently, however, the use of such fireworks and firecrackers is limited, and in some countries, such as Hong Kong and Singapore, they are banned due to the inherent safety risks of such products.

It is an object of the present invention to provide an acoustic generator that mitigates the disadvantages of conventional fireworks and firecrackers.

The present invention relates to sound generating apparatus, and in particular, but not exclusively, to fireworks and firecrackers.

Embodiments of the invention are described by way of example in conjunction with the accompanying drawings.

1 is a partial cross-sectional view of an imitation firecracker tree comprising an embodiment of the sound generating apparatus of the present invention.

FIG. 2 is an enlarged cross-sectional view of the sound generator shown in FIG. 1. FIG.

3 is an enlarged cross-sectional view of a connection for connecting the acoustic generator to the fluid actuator source in the firecracker tree shown in FIG.

4 is a sectional view similar to FIG. 2, which is a second embodiment of the present invention;

Fig. 5 is a sectional view similar to Fig. 3 which is a third embodiment of the present invention.

FIG. 6 is a view similar to FIG. 1 illustrating an alternative connection. FIG.

7 is an enlarged cross-sectional view of the connecting part shown in FIG.

Fig. 8 is a sectional view similar to Fig. 2 which is a fourth embodiment of the present invention.

Fig. 9 is a sectional view similar to Fig. 2 which is a fifth embodiment of the present invention.

10 is a cross sectional view of the embodiment of FIG.

Fig. 11 is a sectional view similar to Fig. 2 which is a sixth embodiment of the present invention.

12 is a sectional view of a sixth embodiment in operation;

FIG. 13 is a cross sectional view similar to FIG. 7 illustrating a second alternative connection; FIG.

14 is a cross-sectional view taken along 14-14 of FIG. 13.

According to the present invention, there is provided an acoustic generator comprising a container configured to contain a pressurized fluid and a chamber selectively in fluid communication with the container, wherein the hydraulic pressure in the chamber exceeds a threshold. It is provided with an outlet that can be opened when.

Preferably, the apparatus further comprises a housing which comprises a container and / or a chamber.

The container can be an aerosol or pressure pack dispenser with an outlet valve, in which the container can move between a first position at which the valve opens and a second position at which the valve closes, and in a first position. It further includes a stop member for using and opening the valve.

The container is made of an elastomeric material, preferably the apparatus further comprises a disruption member for destroying the container, the disruption element being a pin member or a piston member. ) At least one or more additional containers may be provided, which in turn may be opened.

The container and the chamber are connected by at least one selectively openable valve means. The valve means has a valve element that slides in a valve sleeve, in which the valve element and the sleeve have holes to allow fluid to pass through the valve, or between the open and closed positions relative to the sealing element. A valve element sliding in the valve element, the valve element having a fluid passageway so that fluid is delivered through the sealing element in an open position and / or having a sleeve of elastic material covering the fluid delivery hole and forming a one-way valve element. You may.

The apparatus comprises a control fluid inlet or means for receiving a fluid control signal for opening a container, or an opening control for a container for means for receiving an electrical control signal for opening a container. It may also comprise means.

The apparatus further comprises a sealing element covering the outlet, which can be separated when the hydraulic pressure exceeds a threshold.

The sound generating device constitutes the appearance of a firecracker (or other explosive device) and preferably confetti and / or powder material is placed in the chamber.

Compressed fluids may be gases such as air or liquids such as liquid petroleum gas or liquid propellant.

The present invention extends to a plurality of sound generating devices connected to each other such as stringed firecrackers.

One sound generating device is preferably combined with delay means for delaying the actuation of the other sound generating device.

The retarding means may consist of a valve comprising a valve element resiliently biased towards the valve seat, the pressure being increased as the pressure on the valve element increases to force the valve element away from the valve seat or rupture disc. The valve is opened.

The source of pressurized fluid is connected to an acoustic generator and may further be provided with a resilient elastomeric member that expands above the breakpoint upon entry of fluid from the fluid source.

The delay method may consist of an electrical delay circuit.

In an embodiment of the invention, the housing of the sound generating device constitutes the shape of the firecracker, the outlet is covered with a detachable cap and the area adjacent to the cap is filled with confetti and fine powder so that the cap is separated. At the same time, the fluid under pressure escapes and a loud roar is heard. At the same time, a lot of powder and a lot of confetti disguise the smoke. The device thus simulates firecrackers without the associated risks.

Multiple sound generating devices can be connected together similarly to the construction of a tree of conventional firecrackers. Each sound generating device is connected in series and operated through a delay means, so that one sound generating device is operated before the next device in order to give alternating continuous loudness like a conventional firecracker tree.

1 shows the most firecracker tree 10. The most firecracker tree is similar in appearance to the conventional one in that multiple firecrackers are connected to each other by a fuse and end up in one larger "finale" firecracker. In use, the fuse brightens, the firecrackers alternately explode, and the largest and loudest firecrackers explode at the end.

In the embodiment of the present invention described below, the conventional firecrackers are replaced with an acoustic generator which is simply referred to as an "air cracker" 20. The air firecracker 20 is connected to the tube 40 via the connection 50. The first tube 40 is connected via a valve 42 to a source of compressed fluid (such as compressed air or liquid propellant) 44 at the end. The final tube 40 is connected to a balloon 70 filled with confetti 72 past the throttle 74 which reduces airflow, and the balloon 70 is surrounded by a paper housing 76.

The air firecracker 20 is shown in detail in FIG. 2 and has a hollow cylindrical housing 22 formed of a red plastic material in which a pressure pack dispenser or aerosol 24 comprising a compressed fluid, preferably compressed air, is disposed. The dispenser is slid to fit within the housing 22, and the O-ring 22 forms a fluid seal between the housing 22 and the aerosol 24. The dispenser has a depression-openable valve 28 and a fluid outlet 30 at the end. The valve has a conventional structure so that fluid under pressure can escape from the aerosol 24 as the outlet 30 is pressed. A cylindrical stopper 31 is located in the housing 22 and receives the free end 30 of the outlet in a cylindrical recess 32 in fluid communication with the cylindrical fluid outlet 34.

The housing 22 has a hollow cylindrical protrusion 37 at one end that defines a control fluid inlet 36. The dispenser has a circular recess 25 in fluid communication with the inlet 36 at the base. The other end of the housing has a chamber 35 filled with a piece of colored paper 39 having a detachable sealing element or cap 38 formed of plastic material, cardboard or paper or the like.

Air firecracker 20 is attached to the connecting portion 50 shown in FIG. The connection part 50 has a valve body with three cylindrical holes 51, 52, 53 formed therein. The cylindrical protrusion 37 of the air firecracker 20 is fixed to the hole 53 and the two tubes 40 are fixed to the cylindrical holes 51 and 52 in any known manner. Holes 51-53 are in fluid communication through conduits 54, 55, 56. Conduits 54 and 55 connecting the holes 51 connected to the tube 40 near the air supply 44 and the holes 51 connected to the air firecracker 20 are in direct fluid communication. However, conduit 55 is connected to conduit 56 via valve 60. The valve 60 comprises a conical valve element 62 that engages a valve seat 64 with a cylindrical blade edge. The valve element 62 is in contact with the valve seat 64 by a spring 60 positioned by a cap 68 that is threadedly coupled to the valve body 69.

In use, the air firecracker 20 is assembled to a tree as shown in FIG. When the user wants to activate the air firecracker 20, the valve 42 opens so that air under pressure flows out of the reservoir 44 along the tube 40. Upon reaching the first connection 50, the air under pressure enters the control fluid inlet 36 through conduits 54, 55. Finally the increased pressure acts on the recess 25 of the aerosol 24 such that the aerosol moves to the right in FIG. 2 with respect to the closure 31, whereby the fluid outlet 30 is pressed against the valve 28. Lose. Thus, until the cap 38 ruptures or blows out of the housing 22, the compressed air aerosols 24 through the outlet 34 to rapidly elevate the pressure in the chamber 35 adjacent to the detachable cap 38. Eject from). At that point, a sudden pressure wave is generated due to the high pressure difference, and at the same time, the confetti 39 is blown out of the air firecracker 20 to simulate the explosion of the flame firecracker.

All air firecrackers 20 are operated in this way, but due to the operation of the valve 50, they are alternately operated in the manner of a conventional firework firecracker tree. More specifically, referring to FIG. 3, after the valve 42 is opened, the pressure in the conduits 54, 55 rises, and as the pressure rises, the valve element 62 moves against the spring 66. Pressurized away from 64 to open the valve 60, and the compressed air of the reservoir 44 flows through the conduit 55 to the conduit 56 and the next connection 50, the next air firecracker 20 Depending on the speed at which valve 60 is opened, a short time delay occurs between the operation of each air firecracker 20.

After the last air firecracker 20 is activated and the corresponding valve is opened, compressed air from the reservoir 44 flows through the throttle 74 to the balloon 72 and the balloon 72 is inflated. By breaking the paper casing 76, the balloon continues to inflate until the scroll 77 is released and ruptured, so that the confetti 72 in the balloon is released as snow.

A second embodiment of an air firecracker is shown in FIG. 4 and the housing 100 is similar to the housing 22 of FIG. 2, but with three spherical elastic containers 112, e.g., a small inflated balloon containing compressed air. 114, 116). At one end of the container 100, the hollow cylindrical protrusion 102 is connected to the connection 50 in the same manner as in the embodiment of FIG. 2. However, the hole 104 comprises a captured pin 106 of known configuration, which pin is elastically deflected within the passage 104 but moves toward the housing 100 in the same manner as to pierce the balloon with a needle. The container 112 can be destroyed, once pressure from the reservoir 44 is received through the connection 50. The increased pressure in the housing 100 when the container 112 is destroyed causes a chain effect that in turn destroys the container 114 and the container 116. The confetti 120 is disposed in the chamber 121 between the container 116 and the opening 108 of the housing 100. Cap 122 is located on opening 108. In use, an explosion of air due to the destruction of the containers 112, 114, and 116 ruptures or blows the cap 122, while alternatingly generating a continuous roar and sprinkling pieces of colored paper as snow.

A third embodiment of the air firecracker of the present invention is shown in FIG. 5, in which the needle 106 is replaced by a cylindrical piston element 130 with a sealing o-ring 132 and a closing element 134 in the casing 100. Similar to the embodiment of FIG. 4 except that it is fixedly coupled. In use, the increased pressure in the passageway 104 causes the piston element 130 to compress the containers 112, 114, 116 and destroy the container. To assist in this process, the closing element 134 has a number of sharp protrusions 136 that destroy the container 116. The compressed air thus exits through the opening 135 as it is released and the air firecracker operates as described with reference to FIG. 4.

The deformation of the connector 50 is shown in FIGS. 6 and 7. In these figures, the air firecracker tree is the same as in FIG. 1, the only difference being the connection 150.

As shown in detail in FIG. 7, the connecting portion 150 has four connecting holes 152, 154, 156, and 158. The aperture 152 is connected to the tube 40 and is in the vicinity of the compressed air source 44. The holes 154, 156 are connected to the air firecrackers 20, respectively, and are in fluid communication with the holes 152 directly through the passages 160, 162, 164. The hole 158 is connected downstream of the air firecracker through the breaking plate 170 and the tube 40, and the rupture of the breaking plate 170 due to the increased level of pressure is similar to the valve 60 of FIG. 3. Delayed in a way.

8 shows a fourth embodiment of the invention as in FIG. 2 except that the o-ring 26 is replaced by a cylindrical rubber piston element 29. The operation of the embodiment of FIG. 8 shows that when air under pressure enters the control inlet 36, it acts on the piston element 29 to pressurize the piston element 29 against the aerosol 24 to open the valve 28. Same as the operation of the embodiment of FIG.

A fifth embodiment of the present invention is described in FIGS. 9 and 10. In this embodiment, a portion of the air firecracker housing forms the container of the previous embodiment. Specifically, the hollow cylindrical housing 300 has two spaced cylindrical elements 310, 320 having coaxial holes 311, 321, respectively. Element 310 is fixedly formed at one end of housing 300. Element 320 includes a cylindrical base 322 located in step 323 of housing 300. The base 322 is maintained in contact with the step by a circlip 324.

The valve element 330 is located between the elements. The central portion 332 of the element 330 is connected to narrow ends 334 and 336 that can slide in the respective holes 311 and 321. The ridge formed between the narrow ends 334, 336 and the central portion 332 defines the degree of sliding reciprocation of the element 330 that can be moved from the closed position shown in FIG. 9 to the open position shown in FIG. 10. do. The hole 311 is connected at one end to a hole 342 formed in the protrusion 346 to provide an inlet of the control fluid in the same manner as in the previous embodiment. End 334 has a sealing o-ring 339 located in a corresponding annular recess to prevent leakage of fluid along hole 311.

An approximately hollow cylindrical chamber 350 is formed between the housing 300 and the element 330 which is filled with compressed fluid in the previous embodiment method. End 336 and element 320 together provide a valving method such that space 350 is filled with compressed fluid and compressed fluid flows therefrom. For filling, the end 336 has a pair of radially extending holes 354, 356 and a hollow cylindrical hole 352 connected at one end. The free ends of the holes 354 and 356 are located in the annular channel 358 in which the sleeve 36 formed of rubber or other elastic material is disposed. The free end 362 of the hole 352 may be connected to a source of compressed air (or other compressed fluid). In use, the sleeve 360 will act as a one-way valve to push compressed sleeve 360 through the openings 360 through the holes 352, 354, 356 into the space 350. After filling, the compressed air in the space 350 exerts a force on the sleeve 360 to contact the openings in the holes 354 and 356 to seal the connection and prevent the compressed air from escaping.

The valving that allows air to escape from the space 350 is provided by two radial holes 370 and 372 formed in the element 320 and a pair of radial holes 374 and 376 formed in the end portion 336, One end of the holes 374 and 376 is connected to the annular channel 378 and the other end is connected to the hole 352. O-rings 380, 382 and 384 prevent leakage of pressurized fluid along holes 321.

The ends 362 of the holes 352 protrude into the chamber 390 filled with colored paper. A sealing element or cap 392 of the same type as the previous embodiment surrounds the chamber 390.

In use, the space 350 is filled with compressed air and the chamber 390 contains confetti and is sealed with a cap 392. When the air firecrackers are desired to be activated, compressed air is applied through the holes 342 so that the holes 374 and 376 and the annular recesses 378 are aligned with the holes 370 and 372 from the position shown in FIG. By moving the element 330 to the position shown at 10, air is discharged from the space 350 into the chamber 390. The pressure in the chamber 390 is formed until the cap 392 is destroyed or blown out causing a loud roar and the confetti is released in the manner of the previous embodiment.

A seventh embodiment is shown in FIGS. 11 and 12. Specifically, the seventh embodiment relates to the sixth embodiment except that the element 400 is formed from a cylindrical sealing plate with a central hole 408 in which the cylindrical end 401 of the element 330 is slidably received. similar. The holes 370-376 of the embodiment of FIG. 6 are replaced by two axial grooves 402, 404 formed in the portion 401 of length greater than the width of the plate 400. The sealing o-ring 406 is supplied along the hole 408 to prevent leakage of compressed air.

In FIG. 11, which shows the air firecracker in the filled state, the grooves 402, 404 are not in communication with the chamber 390, and any infiltration of air is blocked by the O-ring 406. In the operation shown in Fig. 12, the grooves 402 and 404 connect the space 350 and the chamber 390 to introduce air into the chamber 390, so that the cap is destroyed or blown out, and the confetti is shown. The pressure in the chamber is increased until it is released.

A third form of valve element similar to that shown in FIG. 6 is shown in FIGS. 13 and 14. The valve body 500 includes a compressed air inlet 510 and a compressed air outlet 520 connected to the first connection part 525 and the second connection part 524 to which the air firecrackers are respectively attached. Inlet 510 and outlet 520 are connected by valve 530. The connection is shown in detail in FIG. 14. The inlet 510 is connected to the valve chamber 532 where the valve element 534 is located by a hole 512. The valve element 534 is biased by a spring 536 positioned by the cap 538 towards the valve seat 540. The valve element 534 is conical so that the air pressure exerted through the hole 512 can act against the deflection of the spring 536, so if the pressure is high enough, the hole 512 is connected to the outlet 520. By applying force to the valve element 534 in communication with the aperture 525, compressed air is supplied to the air firecracker connections 522, 524. The inertia of the valve provides a time delay in air firecracker operation through the connections 522, 524, as described above.

Confetti may be mixed with fine powder to provide a smoke effect. Preferably the powder is flour or talcum powder.

The above embodiment of the present invention has not been limitedly described. For example, the operational control of air firecrackers is influenced by the fluid method in the embodiments described above. This can be done in any other suitable way, such as by electrical (solenoid) operation in which the delay valve is replaced with a delay circuit. In addition, air firecrackers can be placed as part of an air firecracker tree as well as individually used to represent a device that simulates an explosion, such as a single fireworks, firecracker, lightning flash or mortar device. When forming part of the tree, some or all of the delay means may be omitted, depending on the desired effect.

Claims (31)

As a sound generating device, A container containing compressed fluid, and A chamber in fluid communication with the container, the chamber having an outlet configured to open when the hydraulic pressure in the chamber exceeds a threshold. The sound generating device of claim 1, further comprising a housing forming the container. The sound generating device of claim 1, further comprising a housing including the container. 4. A sound generating device according to claim 2 or 3, wherein the housing forms the chamber. The sound generating device according to claim 1, wherein the container is composed of an aerosol or a pressure pack dispenser having an outlet valve. 6. A sound generating device according to claim 5, further comprising a housing, in which the container is movable between a first position at which the valve is opened and a second position at which the valve is closed. 7. A sound generating device according to claim 6, further comprising a closing element for engaging the first position to open the valve. The sound generating device of claim 1, wherein the container is formed of an elastic material. 9. A sound generating device according to claim 8, further comprising a breaking element for destroying the container. 10. The acoustic generator as claimed in claim 9, wherein the destructive element is a pin element or a piston element. 11. A sound generating device according to any one of claims 8 to 10, further comprising one or more chambers which can be opened in turn. 2. A sound generating device according to claim 1, wherein the container and the chamber are connected by one or more selectively openable valve means. 13. A sound generating device according to claim 12, wherein said valve means comprises a valve element that can slide in a valve sleeve, said valve element and sleeve having an opening for delivering fluid through the valve in an open position. . 13. The valve of claim 12 wherein the valve means includes a valve element that can slide between an open position and a closed position with respect to the seal element, wherein the valve element opens the fluid passage so that fluid can pass through the seal element in the open position. A sound generating device having a. 15. The acoustic generator as claimed in any one of claims 12 to 14, wherein the valve means comprises a sleeve of elastic material covering the fluid delivery opening, the sleeve forming a one-way valve element. The sound generating device according to any one of the preceding claims, further comprising means for controlling the opening of the container. 17. The sound generating apparatus of claim 16, wherein the control means comprises a control fluid inlet for receiving a fluid control signal for opening the container. 18. The apparatus of claim 17, wherein said control means comprises means for receiving an electrical control signal for opening the container. The sound generating device according to any one of the preceding claims, further comprising a sealing element covering the outlet, the sealing element being detachable when the hydraulic pressure exceeds a threshold. The sound generating device according to any one of the preceding claims, which has an appearance of firecrackers. A sound generating device according to any one of the preceding claims, wherein colored paper and / or powder material is disposed in the chamber. The acoustic generator as claimed in any one of the preceding claims wherein the compressed fluid is a gas. 22. The sound generating device according to any one of claims 1 to 21, wherein the compressed fluid is a liquid petroleum gas or a liquid propellant. A plurality of sound generating devices incorporating a sound generating device according to any one of the preceding claims. A plurality of sound generating apparatus according to claim 24, wherein the plurality of sound generating apparatuses are connected to each other like strings of firecrackers. 26. A plurality of sound generating devices according to claim 24 or 25, wherein one sound generating device is combined with a delay means for delaying the operation of the other sound generating device. 27. The valve element of claim 26, directly or indirectly dependent on claim 17, wherein the retarding means comprises a valve having a valve element elastically biased towards the valve seat, the valve element for urging the valve element away from the valve seat. A plurality of acoustic generators, characterized in that they can be opened in response to an increased pressure on the. 27. A plurality of sound generating devices according to claim 26, directly or indirectly dependent on claim 17, wherein said delay means comprises a breakdown plate. 29. A plurality of sound generating devices as claimed in any one of claims 24 to 28, further comprising a source of pressure fluid connected to the sound generating device. 30. The apparatus as claimed in claim 29 further comprising an elastic element capable of expanding above the break point upon entry of fluid from the fluid source. 27. A plurality of sound generating apparatus according to claim 26, directly or indirectly dependent on claim 18, wherein said delay means comprises an electrical delay circuit.