KR101205246B1

KR101205246B1 - Fuse or detonator improved reliability of safety device assembly

Info

Publication number: KR101205246B1
Application number: KR1020100018773A
Authority: KR
Inventors: 김낙찬; 문학열; 박태민
Original assignee: 주식회사 풍산에프앤에스
Priority date: 2010-03-03
Filing date: 2010-03-03
Publication date: 2012-11-27
Also published as: KR20110099831A

Abstract

Disclosed is a structure for blocking the assembly error in the safety loading device and the fuse equipped with the centrifugal force according to the self-rotation after the launch.
The safety loading part of the present invention comprises a safety loading device and a safety loading housing for accommodating the same, and expands the movement range of the detent holding the rotor, so that the safety loading device is in an abnormal position when the detent is incorrectly assembled. The design designed to prevent insertion into the safety-loading housing, and the properly assembled detents, are provided on the inner surface of the safety-loading housing in excess of the range of motion of the detents to ensure normal release operation despite the extended range of motion. It consists of a configuration forming a corresponding operating space.
The detent is formed so as to protrude from the locking groove of the rotor while being equal to or greater than the protruding height of the male assembly of the safety loading device, and the female assembly formed inside the housing does not have the detent inserted into the locking groove. While it is formed so as not to be assembled, the detent working space is formed into a space that does not interfere even when the detent is protruded.
According to the present invention, when the detents of the safety loader do not bite the rotor normally, the rotor and the detent are moved to an abnormal position by preventing the male assembly from being inserted into the female assembly. It is possible to prevent assembly failure to be assembled. On the other hand, since the detent operation space is provided inside the safety loading housing, once the normally loaded safety loading device can freely protrude the detent located in the detent operation space, there is no restriction on the rotor release action due to shell firing. Do not. Therefore, there is an effect that can ensure the safety of the assembled fuse with high reliability without affecting the assembly process of the entire fuse or the actual operation of the fuse.

Description

Fuse or detonator improved reliability of safety device assembly}

The present invention relates to a safety improvement structure of the fuse that can be secured from the manufacturing stage.

Projectiles or bullets filled with high explosives or deposits and exploded / discharged at a specific time after launch are referred to as 'shells' for the purpose of including both. However, the following 'shells' It is not intended to be used as a term to limit the scope of application.) Is combined with various functional fuses to effectively cause an explosion at a desired time or to prevent an unexpected explosion at an undesired time.

For example, in the case of a shell of 155 mm diameter, the fuse is screwed to the front of the shell, and at the same time as the gun is fired, the shell has a strong setback force and an acceleration of approximately 10,000 to tens of thousands of G. The centrifugal force generated by rotating at the rotational speed of hundreds to thousands of RPM is applied to the inner wire. And these two forces basically act as triggers for the fuse.

The fuse actuated at the same time as the shell is fired on its own, based on the cumulative number of revolutions since the launch, the elapsed time, the time of impact (impact), the time elapsed after the impact, and the reception of the nose cone (command or target proximity). The explosives inside the fuse are exploded at the desired time, and the explosive force causes the high explosives filled in the shell to explode or release the submunition loaded inside the shell.

The operating time of these fuses may be entered in advance at the time of manufacture of the shell, but is usually set to suit the operational capability, the properties of the explosives charged in the shell, and the scattering characteristics of the shell or generated debris, prior to the launch of the shell. Is entered.

To this end, various fuse operation data input methods have been developed, that is, a method of charging fuse data has been developed. The typical fuse data charging method includes a manufacturer input method which inputs a basic explosion pattern before the fuse is manufactured, and before launch. Manual charging method for directly inputting operation data by directly turning the operation dial installed on the fuse, and remote charging method for inputting data by transmitting an electric signal to the control unit of the fuse before and after launch.

On the other hand, the fuse comprises a safety device (hereinafter referred to as the term 'safety load device' in the art for convenience) that prevents an error immediately after the shell is fired. The safety load device is an initiator of the fuse by a blocking member. And the high explosives (or shells) filled in the shells are assembled to the fuses physically blocking each other, and the blocking member operates independently of the control unit of the fuses to release these physical blocks only after a certain time after the shell is fired. . Therefore, the shell before firing can be safe against the detonation of the fuse, and the shell can also be safely stored and transported with the fuse attached. You can prevent the shell from popping into friendly positions by preventing it from passing inside the shell.

Looking at the recent trends of the modern warfare and the military industry, not only the latest launchers and missiles, but also improved operational performance with the limited range of artillery and ammunition already produced and stored, resulting in more diversified operations. The development of this is possible, and in the global weapons market, there is a growing demand for multifunctional universal shells and universal projectiles capable of better operational performance while still using conventional artillery and ammunition systems. Accordingly, the demand for versatility and versatility as well as versatility and versatility is increasing in fuses that directly affect the performance of the bullet body.

The fuse shall be in a safe condition during storage or transport as well as immediately after the shell is fired. A common method for securing the safety of the fuse includes a safety loading device mounted below the fuse to physically block the fuse between the detonator and the high explosive inside the shell body. In this case, the loaded safety loader keeps the fuse in a safe state when it is normally assembled. However, due to mistakes in the manufacturing process of the fuse and loading of the shell, the fuse may be incorrectly assembled. Can be stored, transported and loaded. Assembly errors like this can reach even normal fuses and shells around, causing serious chain explosions or serious accidents during friendly fires.

A typical safety loading device is a device that blocks the explosion pressure of the detonator, and uses the disk-shaped rotor to wait for the detonation force transmission path of the detonator to be turned on (= blocked state), and at the same time as the shell is fired. By rotating the disc-shaped rotor to reach a certain angle of rotation, the discharging path of the distorted state is immediately aligned to release the safe state.

At this time, the disc-shaped rotor is a very effective safety release member in that it uses a rotational force that acts as a firm trigger force upon firing of the shell as a safety release power, but as mentioned above, it is also a mistake in the manufacturing process. The diaphragm transmission path may be misaligned from the beginning, or may be manufactured incorrectly, and the detents which prevent the rotor from moving due to inadvertent impact may not be properly held and opened. Can be.

These misassembled fuses are extremely dangerous, especially in ammunition holding large amounts of ammunition or in supply units in operation, which can lead to a terrible accident that results in a chain explosion due to the explosion of either fuse. Therefore, in view of the risk, such a malfunction of the safety loading device needs to be designed mainly from the side of the coupling movement path so that no defect occurs in the manufacturing and assembly process from the beginning.

An object of the present invention is to implement a coupling structure to block the assembly error at the time when the safety loading device is coupled to the fuse.

The safety loading part of the present invention is composed of a safety loading device and a safety loading housing for accommodating the safety loading device.

The safety loading device of the present invention comprises at least one detent inserted into the locking groove of the rotor to limit the rotation of the rotor, and the detent is the most from the safety loading device when it is not inserted into the locking groove. The outwardly protruding portion is characterized in that it protrudes more than or equal to the protruding height of the male assemble part of the safety loader.

The safety loading device expands the range of motion of the detent holding the rotor, and is configured to be impossible to insert into the safety loading housing when the detent is in an abnormally assembled state.

The safety loading housing has a female assemble part and a detent working space formed in the inner storage space, and the female assembly part is formed so that the safety loading device is not assembled when the detent is not inserted into the locking groove. On the other hand, the detent working space is formed so that the detent can protrude out of the locking groove so as not to interfere with the operation of the detent.

Therefore, the safety loading device cannot be assembled until the detent is properly inserted into the locking groove, and once the detent is properly assembled, the detent can be normally released due to centrifugal force in the operating space despite the extended range of motion. Therefore, there is no effect on normal operation after joining.

According to the present invention, the detent of the safety loading device protrudes in a state in which it is recognized as a poor manufacturing state except that the rotor is not normally held in the rotor, that is, the fuse is in operation, thereby preventing the male assembly from being inserted into the female assembly. Therefore, the safety loading part is not completed properly, there is an effect that makes it easy to find such a defect during the assembly process. In addition, since the detent operation space is provided in the interior of the safety loading housing, the safety loading device, once assembled normally, can freely protrude, so that the release of the rotor during shell firing is not limited. Therefore, it is possible to secure the safety of the fuse with high reliability without affecting the assembly process of the entire fuse or the operation of the actual fuse.

1 is a front cross-sectional view of a shell to which an embodiment of the present invention is applied.
Figure 2 is an exploded perspective view of the fuse produced by the embodiment of the present invention.
Figure 3 is an exploded cross-sectional view of the fuse produced by the embodiment of the present invention.
Figure 4 is an appearance and cross-sectional photo of the fuse produced by the embodiment of the present invention.
Figure 5 is a side view and a plan view showing the position of the rotor and the detent according to the alignment state of the safety loading device and the detonator in the embodiment of the present invention.
Figure 6a is a plan view and a side view showing a state that the safety loading device is not assembled in the safety loading housing due to the abnormal position (protrusion) of the detent in the embodiment of the present invention.
Figure 6b is a plan view and side view showing a state in which the detent is normally assembled (non-protruding) in the embodiment of the present invention, the safety loading device properly assembled in the safety loading housing.

In order to represent the main problem solving means of the present invention in more detail with reference to an embodiment of the present invention included in the drawings will be described in more detail.

However, in describing the present invention based on the following specific examples, the elements including specific technical terms and the specific structures in which they are combined do not limit the spirit inherent in the present invention.

1 illustrates a state in which the fuse 100 of the present embodiment is mounted and separated on a shell 200 filled with a high explosive agent 220 inside the outer shell 210. Each part configuration of the fuse 100 is easily understood with reference to FIGS. 2 and 3. The body of the fuse consists of a main housing 30 having a thick cross section and a sub housing 50, 61, 70 having a relatively thin section that is coupled to the main housing as a skeleton. The safety loading housing 20 is coupled to the safety loading device 10 for blocking between the detonator 40 and the high explosive 220 of the fuse until after the shell is fired. The coupling screw provided in the main housing 30 has a safety loading housing 20 at the bottom, and a central sub housing 50 at the top. An inner sub housing 61 holding the control unit 60 and an upper sub housing 70 surrounding the control unit 60 are covered inside the central sub housing 50. Above the upper sub housing 70, the manual inserting portion 80 and the nose cone 90 are sequentially assembled.

Learn about the features of each of the fuses assembled as above. The manual charging unit 80 under the nose cone 90 transmits charging data to the control unit 60 by directly inputting the dial when setting the time from the firing of the shell to the explosion or the time after the penetration. In charge. Such data charging may be remotely input by electromagnetic induction by a separate external charger using a data induction coil provided in the controller 60.

The control unit 60 starts operation at the same time as the firing with the set detonation data (by acting forces acting as an actuation trigger such as a retraction inertia force and a centrifugal force as described above) and sends the detonation signal to the detonator 40 at a predetermined time point. To pass. The detonator 40 has a battery, an detonator, and the like, which are activated at the same time as the launch. At this time, the detonating force of the detonating tube is transferred into the shell along the detonation path in the center filled with explosives.

On the other hand, the detonator can be misfired due to some wrong cause. In order to prevent this, the safety device for blocking the primary explosion transmission path with the high explosives inside the shell is the safety loading device 10 coupled to the lower side of the safety loading housing 20. At this time, the male assembly portion 13 formed on a part of the outer circumferential surface of the safety loading device 10 is inserted into the safety loading housing 20, and the female assembly portion 21 formed on a portion of the inner circumferential surface of the safety loading housing 20 is The male assembly portion 13 is stored and coupled to each other (see FIGS. 6A and 6B). The male assembly portion 13 and the female assembly portion 21 may be formed of a conventional male screw female screw, but if necessary, the thread is removed and may be formed in the form of a male and female spline. The reason why the term “assembly part” is applied without using an external thread is that the technical concept of the present invention can be applied to spline coupling commonly used in the art. Safety loading device 10 has a rotor (a disc-shaped rotor) 12 therein, the rotor 12, the second or third to deliver the primary detonating force of the detonator 40 to the high detonating agent in the shell The primary aerodynamic force transmission path is coupled to the safety-loading housing 20 in a state initially set to a slightly eccentric position in the center of the fuse, the primary aerodynamic force transmission path. Therefore, at the same time as the shot is fired, the detent 11 holding the rotor is released and the rotation of the rotor as much as the angle set in the rotor (that is, the safety release operation of the safety loader) is completed until all detonation paths coincide. The release time of this safety device can be transmitted to the inside of the shell, and the rotor is delayed by the principle of the minute hand of the clock, and it is set in advance by about tens to hundreds of rotations based on the number of revolutions. Or explode in friendly camps or inadvertently explode when loaded or transported.

Figure 4 is a picture of the appearance and cross section of the actual fuse manufactured according to this embodiment. From the lower propagation path, the safety loading device and the safety loading housing, the detonator in the main housing and the control part in the central sub housing, and the coupling structure of the upper sub housing, the manual loading part and the nose cone can be found in detail.

5 is a view showing the alignment state of the safety loading device and the detonator in this embodiment and the position of the rotor and detent accordingly. Let's look at the alignment of the detonator 40 and the safety loading device 10 on the left side of FIG. In the figure, the pink part is the detonator. When the safety loading device is in the safe state (10-1), the detonator tubes are shifted from each other. Therefore, even if the detonation unit malfunctions (detonation tube detonation), the explosive force according to the detonation is not transmitted to the inside of the shell (downward in the drawing). On the other hand, when the safety loading device is in an aligned state, that is, in the state of waiting for detonation (10-3), the explosive force according to the detonation is transmitted to the inside of the shell while being serially exploded.

5 shows in detail the rotation state of the rotor 12 in the safety loading device in the (10-1) state, the (10-3) state, and the intermediate state (10-2). will be. Rotor 12 shown in the red disc in the figure is a structure in which a hole is formed in the inner portion of the disc as the center of gravity is eccentric in the center of the disc. Therefore, when the safety loading device 10 is strongly rotated according to the rotation of the shell, the rotor 12 receives centrifugal force, but due to the center of gravity is eccentric, it rotates itself. In other words, the revolution and rotation at the same time. Before the shell is fired, the rotor 12 is not rotated (rotated) because at least one detent (such as the member 11 on the left side of the rotor, indicated in green) is caught in the catch groove 14. Of course, at this time, even by installing a lock release pin operated by the inertia force, the rotation of the rotor 12 before the shell can be restrained.

When the shell is fired and the fuse rotates, a strong centrifugal force is applied to the detents, and the detents open and fall out of the catch groove 14 (10-2 state). At this time, the rotor can rotate.

The state of (10-3) is a state in which the rotor 12 is rotated by a considerable angle so that the detonation force transmission path at the center is almost aligned. At this time, the shell should be approaching the target normally, but in the manufacturing process of the fuse, the pawls can be opened from the beginning, and the rotor can be assembled with the twist. If the fuse made in this way is coupled to the shell and even the detonation unit malfunctions, the shell is misunderstood. Therefore, in the safety loading device, the detents and the rotor must be assembled in a state of being properly bite to each other through the locking groove (14). In the present embodiment, the pawl 11 in the coupling structure consisting of the rotor 12 is formed with a locking groove and at least one detent 11 to limit the rotation of the rotor 12 by inserting a portion of the body into the locking groove. ) Is not inserted into the locking groove 14, the pawl was formed to protrude more than the outer diameter of the male assembly 13 formed on the outer peripheral surface of the safety loading device (10).

In addition, the safety loading housing 20 is further provided with a detent working space 22 in which the detent 11 protrudes. In other words, the detent working space 22 is formed to have a size that does not prevent the detent 11 from protruding the operation by the centrifugal force. On the other hand, the arm assembly 21 should be formed to have an inner diameter smaller than the protruding width when the detent 11 is not inserted into the engaging groove 14. More preferably, the (inner circumferential) width of the detent working space is equal to or larger than the outer diameter of the male assembly portion 13 (protrudes more) and larger than the inner diameter of the female assembly portion 21 (protrudes more so as to be wrong). Should not be fitted during assembly). With reference to Figures 5 and 6a, 6b will be described in more detail the safety loading unit that is the core configuration of the present invention. First, there is a safety loading housing 20 in which an arm assembly 21 is formed on an inner circumferential surface and a detent operation space 22 is formed above the arm assembly 21. Then, the safety assembly 10 formed on the outer circumferential surface of the male assembly portion 13 and the male assembly portion 21 is coupled to the safety loading housing 20.
The rotor 12 that rotates by centrifugal force according to its own rotation after firing is further coupled to the upper end of the safety loading device 10, and the locking groove 14 is formed in the rotor 12. In addition, at least one detent 11 for restricting the rotation of the rotor 12 is further coupled to the upper end of the safety loading device 10 by inserting a part of the body into the locking groove 14.
When the detent 11 is not inserted into the locking groove, the detent 11 protrudes more than the outer diameter of the male assembly portion 13 so that the male assembly portion 13 is not coupled to the female assembly portion 21. When the detent 11 is formed and is inserted into the locking groove, the male assembly 13 is coupled to the female assembly 21 by protruding less than the outer diameter of the male assembly 13. It is formed to be.
On the other hand, the inner diameter of the detent working space 22 is formed wider than the outer diameter formed by the detent 11 when the detent 11 is not inserted into the locking groove 14, the male and female assembly is once When complete, allow the detent to freely open (protrude) by centrifugal force inside the safety loading housing.

Figure 6a is a state that the safety loading device is not assembled to the safety loading housing due to the abnormal position (protrusion) of the detent in this embodiment. The detent 11 protrudes as much as the outer diameter of the male assembly 13, and this protrusion height invades the inner diameter of the female assemble part 21 of the safety-loading housing 20 shown in blue. have. Therefore, both assembly parts, for example, male and female threads, are not fastened to each other. In Fig. 6A, both male and female assembly parts are threaded. 6A and 6B, the inner diameter of the female assembly 21 is smaller than the outer diameter of the male assembly 13, therefore. The detent 11 protrudes at a height equal to the maximum outer diameter of the male thread on the drawing (the opposite side must be female threaded, so it is not assembled even if it is not protruded more securely). If applied, it will need to protrude more than the maximum outer diameter of the male spline.

FIG. 6B is a state in which the detent is normally assembled (non-protruding) in this embodiment so that the safety loading device is properly assembled in the safety loading housing. The detent 11 is inserted into the locking groove and enters the outer diameter of the male assembly portion 13 and the female assembly portion 21 can pass the detent normally.

Once passed normally, the detent is located on the detent operating space 22 formed inside the safety loading housing 20. This space can be formed in the form of a groove larger than the inner diameter of the arm assembly portion (21). Accordingly, the detent working space 22 provides a free space that does not interfere with the operation so that the detent 11 can be freely opened by the shell firing, that is, it can freely exit the locking groove by centrifugal force. .

The safety loading device 10 and the safety loading housing 20 accommodating and coupling the safety loading device 10 may be mounted on the fuse as a single module, that is, a safety loading module. In addition, the arm assembly and the detent operation space is formed in the main housing 30 of the fuse without the safety loading housing 20 in accordance with the dimensions of the safety loading device 10 can also be mounted to the fuse alone.

While the embodiments of the present invention have been described in detail with reference to the drawings, the technical spirit of the present invention is not limited to the above embodiments.

In other words, those of ordinary skill in the art to which the present invention pertains may utilize the technical spirit contained in the specification and drawings of the present invention, and as necessary, simple modifications and simple changes that are not included in the specification and drawings of the present invention. An extended example may be further implemented, but this is also obviously included in the scope of the technical idea uniquely possessed by the present invention.

The assembly safety securing structure of the safety loading device according to the present invention can be easily applied not only to the fuse for the shell artillery manufactured in the factory, but also to the grenade rushing in the battlefield.

That is, the principle of the present invention is based on the centrifugal force in the ball generated when the ballistic rotation, so it can be applied to the shell in the finished product state as well as the guided bullet in the semi-manufactured state or the explosive intelligence grenade.

For example, if you want to use a special purpose ammunition modified by using bullets, the safety loading device of the present invention can be miniaturized, but the male coupling part is constructed by a interference fit method compatible with universal bullet calibers, not by screwing, and the thickness and strength of detents. By increasing the height and minimizing the height of the protrusion, the detonator and the safety loader can be inserted in reverse order in the upper part of the shell where the warhead is removed. In this case, when the detent reaches the convex center through the inlet of the casing, the detent's working space is secured. A simple assembly that puts an explosive warhead on top of it can immediately assemble and safely launch intelligent grenade on the battlefield.

100: fuse 200: shot
210: shell case 220: explosive
10: safety device
10-1,10-2,10-3: (in order) safety device with detent open, detent open and rotor rotated
11: detent 12: rotor
13: male assemble part
14: Hanging groove
20: safety loading housing (lower)
21: female assemble part
22: detent working space
30: main housing 40: detonation part
50: sub housing (center)
60: control unit 61: sub housing (inside)
70: sub-housing (upper)
80: manual insert 90: nose cone

Claims

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A safety assembly housing 20 having an arm assembly 21 formed on an inner circumferential surface thereof and having a detent operation space 22 formed above the arm assembly 21;
A safety loading device (10) having a male assembly portion (13) fitted to the female assembly portion (21) on an outer circumferential surface thereof is coupled to the safety loading housing (20);
The rotor 12 is further coupled to the upper end of the safety loading device 10 by the centrifugal force according to the self-rotation after the launch, the engaging groove 14 is formed in the rotor 12;
In addition, at least one detent (11) restricting the rotation of the rotor (12) is further coupled to the upper end of the safety loading device (10) by inserting a part of the body into the locking groove (14);
When the detent 11 is not inserted into the locking groove, the detent 11 protrudes more than the outer diameter of the male assembly portion 13 so that the male assembly portion 13 is not coupled to the female assembly portion 21. Formed;
In addition, when the pawl 11 is inserted into the locking groove, the pawl 11 is formed to protrude less than the outer diameter of the male assembly portion 13 so that the male assembly portion 13 is coupled to the female assembly portion 21. Become;
The inner diameter of the detent working space 22 is formed to be wider than the outer diameter formed by the detent 11 when the detent 11 is not inserted into the locking groove 14; Safety loading part.

Fuse (100) characterized in that the safety loading section described in claim 2.

Explosive bomb, characterized in that the safety loading section described in claim 2.