JP2003279297A - Shooting sound generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shooting sound generator for preventing discharge of a broken piece of a tightly blocking-up part, excellently maintaining handling performance in the front, and allowing a shooting sound to sufficiently reach forward. <P>SOLUTION: A casing 17 for constituting the shooting sound generator 16 is formed of a bottom wall 18, a peripheral wall 19 erected from the periphery of the bottom wall 18, and a cover body 21 for forming a housing space 20 inside by covering a front end part of the peripheral wall 19. The shooting sound generator 16 has an igniter 26 arranged on the bottom wall 18 of the casing 17, a firing charge 27 arranged in a position in close vicinity of the igniter 26 of the housing space 20, and a gas generating agent 28 loaded in the housing space 20. A plurality of gas exhaust holes 24 constituted so as to generate tightly blocking-up pressure in the casing 17 by combustion gas of the gas generating agent 28 are arranged in a cover body 21 of the casing 17. The gas exhaust holes 24 are constituted so as to generate the tightly blocking-up pressure of 10 to 50 MPa in the casing 17. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a launching device for launching a flying object, and more particularly to a launching sound generating device used for launching training without using an actual flying object. More specifically, the present invention relates to a firing sound generation device capable of maintaining good handleability in front of the firing device without causing the launch device to release fragments of the flying object or the tightly closed part.

[0002]

2. Description of the Related Art The purpose of using a firing sound generator is to make an operator feel a realistic volume during firing training without using an actual flying object. Up to now, two types have been known as emission sound generators developed for such a purpose.

The first type encloses the combustion gas of the gas generating agent generated in the launching device with a lid plug or embolus made of a material such as cork, resin, wood fiber board, etc. It is a device for generating a firing sound by generating a lid plug or an embolus that is discharged with a rupture.

As such an example, for example, Japanese Patent No. 300
In the 2729 publication, there is a configuration in which a combustion gas of explosive is tightly closed by a lid, such as a wood fiber board having a plurality of holes penetrating in the axial direction so as to minimize the fragments of the lid plug after discharge. It is used.

Further, in Japanese Patent Application Laid-Open No. 64-46593, firing is performed by using a lid plug in which thin plate-like materials formed of a material having a temporary specific gravity of 0.1 or more and less than 0.33 are weakly deposited. Gas is occluded in the apparatus, and when the lid pressure or the embolism is broken by the pressure of the occluded gas, the gas is discharged from the emission apparatus to generate a firing sound.

The other type is disclosed in, for example, Japanese Patent Laid-Open No. 7-190698, and a taper portion and a nozzle portion for the purpose of firmly locking the tightly closed portion are provided following the opening of the shell. Is a device for closing the combustion gas. It is a device that utilizes the resulting recoil to activate the automatic mechanism such as discharging the shell and exchanging ammunition.

[0007]

However, in the device disclosed in Japanese Patent No. 3002729, the fragments of the wood fiber board after rupture are minimized to reduce the flight distance of the fragments scattered outside the device, and It has reduced power,
In the vicinity of the front of the device, it was not possible to completely prevent the bursting of energetic fragments, and the handling was still poor.

Further, even in the example disclosed in Japanese Patent Laid-Open No. 64-46593, it is not possible to completely prevent the fragments of the lid plug from protruding from the device, and there is a problem in handling in the vicinity of the front. .

Further, in the apparatus disclosed in Japanese Patent Laid-Open No. 7-190698, since a large amount of explosive powder having the same strength as that used for ejecting an actual flying object is used, the firing sound inside the firing sound generating apparatus is burned. There is a problem that corrosion is likely to occur and the handleability of the firing sound generator cannot be maintained well.

In addition, since the combustion gas of the gas generating agent is tightly closed by a single nozzle, it is not possible to completely prevent a part of the gas generating agent from being blown out forward. There was also a problem with securing.

The present invention has been made by paying attention to the problems existing in the prior art as described above. The purpose is to prevent the release of fragments of the tightening part, to maintain good handling in the front, and to make the firing sound sufficiently forward. To provide a device.

[0012]

In order to achieve the above object, the firing sound generator of the first invention has a lid on a bottom wall, a peripheral wall standing upright from the periphery of the bottom wall, and a front end portion of the peripheral wall. And a igniter provided on a bottom wall of the housing, an igniting agent arranged in a position close to the igniter in the housing space, and a housing. A firing sound generator including a gas generating agent loaded in a space, the gas being configured to generate a tight closing pressure in the housing by a combustion gas of the gas generating agent on a peripheral wall or a lid of the housing. It is characterized by having a plurality of discharge holes.

A firing sound generator according to a second aspect of the present invention is the firing sound generator according to the first aspect, wherein an ignition tube is supported between the bottom wall and the lid, and a gas generating agent is annularly formed around the ignition tube. The ignition cylinder is loaded with the ignition powder, and the cylinder wall of the ignition cylinder is provided with a plurality of blow-out holes through which the flame generated by the ignition powder is blown out.

A firing sound generator according to a third aspect of the present invention is the emission noise generator according to the first or second aspect, wherein the gas discharge hole is 10 to 10 in a housing.
It is configured to generate a tightening pressure of 50 MPa.

A firing sound generator according to a fourth aspect of the present invention is the emission sound generator according to any one of the first to third aspects, wherein the gas discharge hole is closed by a rupture plate provided with a cross slit.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) The first embodiment of the firing sound generator of the present invention will be described in detail below.

As shown in FIG. 3, the launching device 11 is manufactured by simulating an ordinary fire gun (bullet), and has a cylindrical drug chamber portion (combustion chamber) 12 having a large diameter on the rear end side. A barrel-shaped barrel 13 having a small diameter on the front end side is connected via an intermediate taper portion 14, and a rear end portion is integrated with a chain stopper 15. A firing sound generator 16 is housed at the rear end of the drug chamber 12 of the launcher 11.

As shown in FIG. 1, the casing 17 constituting the firing sound generator 16 has a bottom wall 18, a cylindrical peripheral wall 19 standing upright from the periphery of the bottom wall 18, and a front end portion of the peripheral wall 19. A disk-shaped lid 21 that covers the inside of the container and forms the accommodation space 20 inside
It consists of and. A female screw portion 22 is threaded on the inner peripheral surface of the front end of the peripheral wall 19. The lid 21 has a male screw portion 23 on its outer peripheral surface, and the male screw portion 23 is screwed into the female screw portion 22 at the front end of the peripheral wall 19 of the housing 17,
It is fixed to the front end of the housing 17. As shown in FIGS. 1 and 2, nine gas discharge holes 24 are formed in the outer peripheral region of the lid body 21 on the same circumference at regular intervals. The number of gas discharge holes 24 is set based on the total area of the gas discharge holes 24, the workability of the gas discharge holes 24, and the like.

The material forming the casing 17 must be able to withstand the pressure and heat of the gas generated when the firing sound generator 16 operates, and is a metal material such as aluminum, iron, or brass, or Inorganic materials such as ceramics can be used. Among these materials, it is preferable to use iron from the viewpoint of strength against impact due to rapid combustion of the gas generating agent and heat resistance of combustion gas.

The insertion hole 2 is formed in the center of the bottom wall 18 of the housing 17.
5 is provided, and an ignition tool 26 is supported in the insertion hole 25. An ignition powder 27 is arranged in the accommodation space 20 in the front position of the igniter 26. A gas generating agent 28 is loaded in a position in front of the ignition powder 27 in the accommodation space 20.

The housing 17 has an outer diameter equal to or smaller than the inner diameter of the drug chamber 12 of the launching device 11 so that it can be loaded into the launching device 11, and the length of the housing 17 is also the drug chamber of the launching device 11. 1
The length is less than the length that can be loaded in 2. The outer diameter of the housing 17 is
1 to 2 from the inner diameter of the launching device 11 so that it can be smoothly attached to and detached from the launching device 11 and can be positioned in the launching device 11.
Those smaller by mm are preferable.

Further, it is desirable that the length of the housing 17 is 1/2 or more of the outer diameter of the housing 17. The reason is the case 1
In FIG. 7, the ignition device 26 is provided on the bottom wall 18, the bottom wall 18 is not placed down, and the peripheral wall 19 is placed down, so that the stability in that case is maintained well. Also, the housing 17
It is desirable that the length of the above is 1/2 or less of the length of the medicine chamber 12 of the launching device 11. The reason is to reduce the weight of the housing 17 and facilitate loading and unloading of the housing 17 with respect to the launching device 11. The volume in the housing 17 is determined by the outer diameter and the length of the housing 17, and is preferably 1/2 or less of the volume of the launching device 11.

When the igniter 26 is ignited, the igniting agent 27 disposed in the vicinity of the igniter 26 is ignited, and the entire gas generating agent 28 is burned by the flame caused by the ignition of the igniting agent 27. There is. The igniter 26 is preferably a detonator that is ignited by an electric signal or a hit from the outside of the launching device 11.

The ignition charge 27 is quickly ignited by the ignition of the igniter 26 and propagates the flame to the gas generating agent 28. The types of ignition powder 27 include black powder, single base type ignition powder containing nitrocellulose as a main component, boron / nitrite type ignition powder,
Alternatively, magnesium / fluorine resin (polytetrafluoroethylene) -based igniting agent or the like can be used, but black explosive and nitrocellulose-based igniting agent generally used for ammunition are preferable.

The gas generating agent 28 is for generating gas in the housing 17 by igniting the ignition powder 27.
Although any substance that rapidly generates gas after ignition can be used, it is preferable to use a propellant such as propellant or propellant.

The gas generating agent 28 changes the gas generation rate in the housing 17 at the time of gas generation depending on the composition and shape, but by adjusting the area of the gas discharge hole 24, it corresponds to the tightness pressure at which a firing sound is generated. Therefore, it is possible to use a commonly used existing composition or shape instead of a special gas generating agent.

[0027] Specifically, in the composition, a single base system mainly composed of nitrocellulose, a double base system mainly composed of nitrocellulose and nitroglycerin, or a triple base system mainly composed of nitrocellulose, nitroglycerin and nitroguanidine is used. A gas generant can be used.

Further, an oxidizing agent such as ammonium perchlorate, potassium perchlorate, ammonium nitrate or nitramine,
It is also possible to use a composite gas generating agent composed of a binder that serves as a fuel, such as polybutadiene, polyether or polyester.

Among these, a gas generating agent composed of a single base type, a double base type or a triple base type smokeless explosive is preferable because it produces a combustion gas that does not affect the launching device 11 by corrosion or the like. .

As the shape of the gas generating agent 28, a long tubular shape with a groove, a single hole tubular shape, a rod shape, a spherical shape, a plate shape, a perforated tubular shape or the like which is generally used for a gas generating agent is adopted. In order to ensure stable combustion of the agent 28, it is desirable that the shape of the combustion area does not change from the start to the end of combustion. From such a viewpoint, a long tube with a groove or a single-hole tube is desirable. Further, in order to prevent the gas generating agent during combustion from being released from the gas discharging hole, it is preferable that the particle diameter of the gas generating agent 28 is larger than the diameter of the gas discharging hole 24.

The position of the gas discharge hole 24 is the lid 21 of the housing 17 or the peripheral wall 19, but preferably the lid 21 is such that the exhaust gas does not directly blow to the launching device 11.
The number of arrangement is two or more. The position of the gas discharge hole 24 is preferably arranged on the same circumference with the front part of the lid 21 as the center in order to uniformly disperse the reaction force applied to the launching device 11 due to the gas discharge.

The hole diameter, shape and total area of the gas discharge holes 24 are appropriately set according to the gas generation speed generated in the housing 17 and the tight closing pressure required to generate the emission sound.
The shape of the gas discharge hole 24 is not defined as long as the area of the gas discharge hole 24 is constant, but a circular shape that is less susceptible to the corrosion and deformation of the gas discharge hole 24 is preferable.

When the gas generating agent 28 is in the form of small particles, in the gas generating agents 28 other than the rapidly combustible gas generating agent 28, the unburned gas generating agent 28 jumps out from the gas discharge hole 24, and goes out of the launching device 11. After being discharged, good handling property in front of the launching device 11 cannot be ensured.

Therefore, while maintaining the total area of the gas discharge holes 24 so that the diameter of the gas discharge holes 24 is in the range of the above-mentioned closing pressure, a plurality of holes are provided to make the diameter smaller than the outer diameter of the gas generating agent 28. It is preferable. That is, it is preferable to set so as to satisfy the relationship of the following equation.

Particle size of gas generating agent> [(A / nπ) ×
4] ^1/2 A: total area of the gas discharge holes 24, n: number of the gas discharge holes 24 Considering that the gas generating agent 28 during combustion is ejected from the gas discharge holes 24, the diameter of the gas discharge holes 24 is set to It is more preferable to set it to 50% or less of the outer diameter of the generator 28.

The tightening pressure is mainly determined by a combination of the total area of the gas discharge holes 24 and the gas generation rate in the housing 17. More specifically, combustion of the gas generating agent 28 in the housing 17 produces gas in the housing 17 at a certain gas generation rate. In the initial stage of combustion, in which the amount of gas generated in the housing 17 is larger than the amount of gas discharged from the gas discharge holes 24, the pressure in the housing 17 increases and the gas is tightly closed. On the other hand, in the latter stage of combustion, where the amount of gas generated in the housing 17 is smaller than the amount of gas discharged from the gas discharge holes 24, the pressure in the housing 17 begins to drop. The main firing sound is after the pressure inside the housing 17 has reached the maximum pressure,
It occurs when gas is exhausted to the outside of the housing 17 all at once while the tightening pressure is rapidly reduced. In addition, generally, the higher the tightening pressure, the louder the generated sound tends to be.

Therefore, it is preferable to secure a tightness pressure of 10 to 50 MPa, and more preferably to secure a tightness pressure of 15 to 30 MPa in order to generate a preferable firing sound. When the tightening pressure exceeds 50 MPa, the gas generated in the housing 17 is not smoothly discharged from the gas discharge holes 24, which is likely to cause an abnormal pressure rise. On the other hand, when the tightening pressure is less than 10 MPa, it tends to be impossible to generate a sufficient firing sound. It should be noted that the range of the tightening pressure means that the pressure inside the casing 17 during combustion is not entirely maintained within this range, but the maximum pressure is suppressed within this range.

Further, the control of the tightening pressure is performed because the gas generation rate in the housing 17 is determined by the specifications of the amount, shape, composition, etc. of the gas generating agent and the inner volume of the housing 17. The tightening pressure in the housing 17 can be controlled by optimally adjusting the area of the gas discharge hole 24 with respect to the specifications of 17 and the gas generating agent 28.

In order to prevent the casing 17 from being destroyed by the gas generated by the combustion of the gas generating agent 28,
In addition to the strength of the bottom wall 18 and the peripheral wall 19 of the housing 17 and the strength of the lid 21, the total strength of the joint strength between the peripheral wall 19 and the lid 21 is the strength (10 to 50M) due to the generated pressure of the gas in the housing 17.
It is necessary to exceed Pa).

When the firing sound generator 16 is used to generate a firing sound, the ignition tool 26 is first ignited by an electric signal from the outside of the firing device 11. By the ignition of the igniter 26, the igniting agent 27 located in front of the igniter 26 is ignited, and the flame thereof burns the gas generating agent 28 to generate combustion gas.

At the beginning of combustion of the gas generating agent 28, the casing 17
The internal pressure increases and the gas is tightly sealed in the housing 17, and then the internal pressure of the housing 17 reaches the maximum pressure. The pressure begins to drop. In this process, after the pressure inside the housing 17 has exceeded the maximum pressure, a firing sound is generated when the tightness pressure is rapidly reduced and the gas is exhausted from the gas exhaust hole 24 to the outside of the housing 17 all at once. .

As a result, the firing sound generators 16 to 100
A firing sound of approximately 120 db (decibel) is obtained, and a sufficient sound can be made to reach the front of the firing sound generation device 16 in the firing training.

The effects exhibited by the first embodiment as described above will be summarized and described below. -According to the emission sound generating device of the first embodiment, the projectile is not provided in the emission device 11, the lid as the tightening portion is not broken, and the gas discharge hole 2 is provided.
Since the gas is discharged from No. 4, the fragments of the lid body 21 are not released to the outside. Therefore, nothing is discharged to the front of the launching device 11, and good handling can be maintained in the front.

Further, the sound generated when the combustion gas of the gas generating agent 28 passes through the gas discharge hole 27, that is, when the tightening pressure in the housing 17 is released, reaches the front of the launching device 11 sufficiently. By doing so, attention can be called in front of the launching device 11. At this time, since the plurality of gas discharge holes 24 are provided, the release of the pressure of the gas generated in the accommodation space 20 can be easily adjusted, and the above effect can be reliably exhibited.

In addition, since the gas discharge hole 24 is configured to generate a closing pressure of 10 to 50 MPa in the housing 17, the gas discharge is performed without causing an abnormal pressure increase in the housing 17. The holes 24 can generate a sufficient sound.

In addition, by changing the area of the gas discharge hole 24 with respect to the gas generation rate in the housing 17,
The gas tightness pressure in the housing 17 can be controlled, and the emission volume can be changed to meet the target level.

Further, since the area of the gas discharge hole 24 suitable for the shape, composition, weight, etc. of the gas generating agent 28 can be set, it is possible to use a general gas generating agent or a general shape. it can. (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. In this second embodiment,
The differences from the first embodiment will be mainly described.

As shown in FIG. 4, a central ignition tube 29 as a cylindrical ignition tube made of the same material as that of the housing 17 is provided between the bottom wall 18 of the housing 17 and the central portions of the lid 21. Are joined and supported. An ignition charge 27 is loaded in the central ignition cylinder 29, and a cylinder wall 30 of the central ignition cylinder 29 is also included.
A large number of opening holes 31 are formed therethrough.

The outer diameter of the central ignition cylinder 29 is not more than the inner diameter of the housing 17 and is not particularly limited as long as it can hold the lid 21 of the housing 17 at a strength equal to or higher than the tightening pressure. In order to sufficiently secure the inner diameter of the housing 17,
It is preferably in the range of%.

The ignition charge 26 in the central ignition tube 29 is ignited by the ignition of the igniter 26, and a flame is blown out from a large number of openings 31 provided in the cylindrical wall 30 of the central ignition tube 29 to generate gas. It is designed to burn the agent 28.

Therefore, according to the firing sound generator 16 of the second embodiment, the gas generating agent 28 can be efficiently burned from the central portion and the burning speed can be increased. Therefore, it is possible to quickly generate the emission sound from the emission sound generation device 16. (Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, parts different from the first embodiment will be mainly described.

As shown in FIGS. 5A and 5B, the housing 1
In the gas discharge hole 24 provided in the lid 21 of FIG. 7, a rupture plate 33 with a disc-shaped cross slit 32 has a locking recess having a diameter larger than that of the gas discharge hole 24 provided in the inner surface of the lid 21. It is fixed to 34. The cross slit 32 of the rupture plate 33 is formed in a cross shape so as to intersect at the center of the rupture plate 33.

When the igniter 26 ignites the igniting charge 27 and the gas generating agent 28 burns, the rupture plate 33
Seals the combustion gas of the gas generating agent 28 in the housing 17,
When a predetermined tightening pressure is reached, the rupture plate 33 crosses the slit 3
It bursts from the intersection of 2 toward the outer periphery, and gas is released at a stretch. Therefore, as shown in FIGS. 6A and 6B, the rupture plate 33 is divided into four uniform fan plates 35. Each fan plate 35 is bent at the outer peripheral portion of the rupture plate 33, and remains held in the rupture plate 33.

Here, the cross slit 32 provided in the rupture plate 33 is provided to control the rupture shape so that fine fragments are not generated when the rupture plate 33 ruptures. The intersecting slit 32 is preferably formed by two or more straight lines intersecting at the center of the gas discharge hole 24.
Two cross slits 32 are more preferable in order that the metal plate ruptured along 2 is held on the outer circumference of the cross slit 32.

As the material of the rupture plate 33, a metal plate such as aluminum, brass, iron or the like can be usually used, but aluminum having a strong malleability is preferable because it is necessary to hold the metal plate after rupture. Then, in order to crush the rupture plate 33 according to a predetermined tightening pressure, a thickness corresponding to the material of the rupture plate 33 is set.

Therefore, the firing sound generator 1 of the third embodiment is used.
According to 6, in addition to the sound that the rupture plate 33 ruptures at the intersecting slit 32, the gas discharge hole 24 is larger than that of the first or second embodiment, and a large amount of gas passing through the gas discharge hole 24 causes The generated sound produces a sufficiently loud sound. As a result, the sound can be sufficiently recognized in front of the launching device 11, and the handleability of the launching sound generating device 16 can be further improved.

[0057]

EXAMPLES Example 1 An apparatus having the following configuration was manufactured as the emission sound generating apparatus 16 of the first embodiment shown in FIGS. 1 and 2.

The bottom wall 18 and the peripheral wall 19 of the housing 17 were made of steel (SK3). The lid 21 of the housing 17 is also made of the same material, and the male screw portion 23 of the lid 21 is screwed into the female screw portion 22 of the peripheral wall 19 to fix the lid 21 to the peripheral wall 19.
Nine gas discharge holes 24 having a diameter of 5 mm are arranged on the lid body 21 on a concentric circle at equal intervals. The inner wall of the peripheral wall 19 of the housing 17 is about 140 mm and the length is about 80 mm.
Had a volume of about 800 cm ³ .

As the composition of the gas generating agent 28, a double base type gas generating agent containing nitrocellulose and nitroglycerin as main components was used. The gas generating agent 28 has an outer diameter of about 7 m
m, an inner diameter of about 2 mm, a length of 60 mm is a single-hole tubular drug,
The dose was 128 to 184 g.

An igniter 26 consisting of an electric detonator is attached to the bottom wall 18 of the housing 17, and 6 g of black explosive is used as the igniter 27 to uniformly ignite the gas generating agent 28.
It was arranged in the vicinity of 6. Next, after disposing a pressure detector (manufactured by Japan Steel Works, product name: T-18) inside the housing 17, a lid 21 is provided.
Attached.

After the firing sound generator 16 is fixed horizontally, the igniter 26 is connected and electricity is supplied by remote control to ignite the igniter 26 and ignite the igniting charge 27 to generate gas. Agent 28 was burned. As a result, the gas generated in the housing 17 is discharged from the gas discharge hole 24,
At the same time when the firing sound was generated, smoke was generated in front of the firing sound generator 16.

The firing volume (db) is 30 m in front of the test equipment.
Sound level meter placed at the point (manufactured by Rion, trade name: NA-2
4) and the tightening pressure (MPa) was measured by the pressure detector. The emission volume is JIS C 1502.
It is the value measured by the sound level meter according to the above and frequency-corrected for the A characteristic.

The results of the tightening pressure and the firing volume are shown in Table 1. (Examples 2 and 3) Example 2 was repeated except that the amount of gas generating agent was changed as shown in Table 1, and the tightening pressure (MP
a) and the emission volume (db) were measured. The test results are shown in Table 1.

[0064]

[Table 1] As shown in Table 1, in Examples 1 to 3, the tightness pressure was 10 to 50 (MPa) and the firing volume was 109 to 116.
It was (db), and the sound at the point 30 m in front of the firing sound generator was sufficiently loud and sufficient to recognize the sound. Therefore, the handling property in front of the firing sound generation device could be favorably maintained.

The present invention can be carried out by modifying the above embodiment as follows. -As shown in Drawing 7 (a), case 17 can be made into the convex shape which has the small cylinder part 36 which makes the front end the small cylinder shape. Then, the gas discharge hole 24 may be formed in the peripheral wall 19a of the small cylindrical portion 36.

Further, as shown in FIG. 7B, a peripheral wall 19b is formed in a taper shape such that the front portion of the housing 17 has a smaller diameter toward the front end, and a gas discharge hole 24 is formed in the peripheral wall 19b. You can also do it.

The planar shape of the gas discharge hole 24 may be elliptical or polygonal. Also,
The number, size, or position of the gas discharge holes 24 can be changed as appropriate.

In FIGS. 7A and 7B, the gas discharge holes 24 can be provided in both the lid 21 and the peripheral wall 19. The ignition cylinder may be provided at a position other than the center of the bottom wall 18 and the lid 21 of the housing 17, and a plurality of ignition cylinders may be provided in the housing 17.

It is also possible to form the bottom wall 18 of the housing 17 separately from the peripheral wall 19 and integrate them by means such as screws. Further, the technical idea understood from the above embodiment will be described below.

The firing sound generator according to any one of claims 2 to 4, wherein the ignition tube is supported at respective center positions of the bottom wall of the housing and the lid. With such a configuration, the effect of the invention described in claim 2 can be most effectively exhibited.

The compression pressure is set and generated so that the gas generation amount generated by the combustion of the gas generating agent in the housing is larger than the gas discharge amount discharged from the gas discharge hole. The firing sound generator according to any one of claims 1 to 4. When configured in this way, the effects of the invention according to any one of claims 1 to 4 can be reliably exhibited.

The firing sound generating device according to any one of claims 1 to 4, wherein the casing is incorporated in a launching device for training in which a flying object is not loaded. When configured in this manner, the effects of the invention according to any one of claims 1 to 4 can be effectively exhibited for launch training of a flying object.

[0073]

Since the present invention is constructed as described above, it has the following effects. According to the firing sound generator of the first aspect of the present invention, it is possible to prevent the fragments of the tightening portion from being released, maintain good handling in the front, and allow the firing sound to reach the front sufficiently. be able to.

According to the firing sound generating device of the second invention, in addition to the effect of the first invention, the gas generating agent can be efficiently burned, the burning speed can be increased, and the firing can be performed. It is possible to promptly generate a sound emission from the sound generation device.

According to the firing sound generator of the third invention, in addition to the effect of the first or second invention, it is possible to generate a sufficient firing sound without causing an abnormal pressure rise. According to the firing sound generator of the fourth invention, in addition to the effect of any one of the first to third inventions, a sufficiently loud sound is obtained, and the sound is sufficiently recognized in front of the firing sound generator. Therefore, it is possible to further improve the handleability of the firing sound generation device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing a firing sound generation device according to a first embodiment of the present invention, which is a cross-sectional view taken along line 1-1 of FIG.

FIG. 2 is a perspective view schematically showing the firing sound generation device of the first embodiment.

FIG. 3 is a sectional view showing a part of the launching device.

FIG. 4 is a cross-sectional view schematically showing a firing sound generator according to a second embodiment.

5A is a cross-sectional view schematically showing the firing sound generation device of the third embodiment, which is a cross-sectional view taken along line 5a-5a of FIG. 5B, and FIG. FIG.

6A is a cross-sectional view showing the operation of the firing sound generator of the third embodiment, and is a cross-sectional view taken along line 6a-6a of FIG. 6B, and FIG. 6B is a firing sound generator. Plan view.

FIG. 7A and FIG. 7B are cross-sectional views showing emission sound generators of other examples.

[Explanation of symbols]

16 ... Firing sound generator, 17 ... Casing, 18 ... Bottom wall, 1
9, 19a, 19b ... peripheral wall, 20 ... accommodation space, 21 ... lid, 24 ... gas discharge hole, 26 ... igniter, 27 ... ignition powder,
28 ... Gas generating agent, 29 ... Central ignition cylinder as ignition cylinder,
32 ... Cross slit, 33 ... Bursting disc.

Continued front page    (72) Inventor Junichi Kasamatsu             2620 Oji-ri, Oita-shi, Oita (72) Inventor Masanori Watanabe             2-8-16 Yokota, Oita City, Oita Prefecture

Claims (4)

[Claims] 1. A casing comprising a bottom wall and a peripheral wall which is erected from the periphery of the bottom wall, and a lid body which covers the front end of the peripheral wall to form an accommodation space therein, and the bottom of the casing. A firing sound generating device comprising an ignition tool provided on a wall, an ignition agent arranged in a position close to the ignition tool in the accommodation space, and a gas generating agent loaded in the accommodation space, wherein A firing sound generating device having a plurality of gas discharge holes configured to generate a tight closing pressure in a casing by combustion gas of a gas generating agent on a peripheral wall or a lid. 2. An ignition tube is supported between the bottom wall and the lid, a gas generating agent is annularly arranged around the ignition tube, and an ignition agent is loaded in the ignition tube. The firing sound generating device according to claim 1, wherein a plurality of blow-out holes for blowing out a flame generated by igniting the ignition charge are provided on the cylinder wall of the ignition cylinder. 3. The gas discharge hole is 10 to 50M in the housing.
A device configured to generate a tightening pressure of Pa.
Alternatively, the firing sound generator according to claim 2. 4. The emission sound generating device according to claim 1, wherein the gas discharge hole is closed by a rupture plate provided with a cross slit.