KR101666217B1 - Safety charging mechanism for Shell fuse which is operated by the time variable change of setback force - Google Patents

Safety charging mechanism for Shell fuse which is operated by the time variable change of setback force Download PDF

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Publication number
KR101666217B1
KR101666217B1 KR1020160009735A KR20160009735A KR101666217B1 KR 101666217 B1 KR101666217 B1 KR 101666217B1 KR 1020160009735 A KR1020160009735 A KR 1020160009735A KR 20160009735 A KR20160009735 A KR 20160009735A KR 101666217 B1 KR101666217 B1 KR 101666217B1
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KR
South Korea
Prior art keywords
inertia
pin
rotor
spring
loading
Prior art date
Application number
KR1020160009735A
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Korean (ko)
Inventor
정준오
신인태
권오성
Original Assignee
주식회사 풍산에프앤에스
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Priority to KR1020160009735A priority Critical patent/KR101666217B1/en
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Publication of KR101666217B1 publication Critical patent/KR101666217B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes

Abstract

A second inertia fin (64) formed in a slender reel shape at the waist and upper and lower portions of the loading rotor (40) so as to face the upper end thereof, and a second inertia fin (64) A time-varying inertia-responsive safety loading structure of a cannon tube is disclosed in which the rotational fixed state of the charging rotor (40) is released by the cooperative motion of the pin (62).
The present invention relates to an inertial-sensitive safety pin assembly and operation structure capable of ensuring safety in advance of a shell launch in a rotor rotational delaying and charging device and capable of simultaneously pursuing clear explosion alignment after a shell is launched, The first inertia-sensitive spring 63 can push up the first inertia pin even when the second inertia pin 64 is retracted. Thus, the second inertia pin 64 retracted once advances again during the flight of the shell, 40 to prevent the rotational movement for aerial alignment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety charging mechanism for a shell,

The present invention relates to an inertial-responsive safety loading structure capable of ensuring safety in advance of shell launching in a rotor rotational delay loading device of a shell for a cannon,

The shell of the shell is required to have the function of precisely bombing the shell at a desired point after the launch, but it is also required to have a safety function to prevent the shell from exploding from the front of the shell to the shell immediately after the shell is fired.

Rotary delay loading device of the new pipe is an indispensable constituent for the safety of the handling of shells by intercepting the detonation path (explosion propagation path) between the detonator and the explosive charge,

The term "charging" or "armoring" refers specifically to the safe loading or delayed loading of a primer. The cylindrical charging rotor 40 is arranged in a state where the primer charged in the body thereof is disposed in a state of being deviated from the lower explosive charge (state of violent power propagation path cutoff), and then rotated after the shell is fired to stop at a certain angle, In a straight line.

The charging rotor 40 rotates at a predetermined angular velocity along the rotor shaft 41 after the coiling by the rotational force previously secured by the spring-loaded springs. The loading rotor can be set by the rotor rotation angle adjusting screw 51 to stop at a specific rotation angle before firing and thereby select a particular one of the two or more primers such as the primed primer 42 or the retard primer 43.

The selected primer is positioned on the upper side of the connecting gunpowder 52 immediately below the sinkhole 36 and aligned with them when the charging rotor 40 completes the rotation. This is referred to as erosion alignment. In this state, when the sinkhole (an electric wake-up current in the case of an electronic fuse) arouses the primer, the connection gunpowder 52 spreads the primer explosive force, causing the explosive charge 53 to explode, This explodes.

On the other hand, the rotational loading mechanism of the rotor must be carried out after the coiling, because the fired shell is prevented from exploding due to an unknown cause or exploding at close range of the firing point and causing damage to the ally.

Therefore, it is possible to reliably block the possibility of rotation of the loading rotor, which may occur without a reason before the blasting, by the separate safety pin configuration holding the rotor, and after the blasting, the safety pin reacts to the backward inertia force and retracts ≪ / RTI > has been steadily been made in the meantime.

This is what was introduced in the prior art documents (1) to (3). If the safety pin is retracted due to the setback force acting on the loading rotor by using the inertia-sensitive safety pin placed in double or triple arrangement separately from the operation of the sinker or the trigger device, But it follows a common principle in that the rotor is rotatable.

(1) European registered patent EP 0,327,706 fuse for launch vehicle (2) Korea registered patent No. 0675764 mortar shell new pipe device (3) US registered patent US 8,342,093 fuse for launch vehicle

Referring to FIGS. 2 and 3, when two inertia fins are sequentially retracted after the overlapping of the two inertia fins, the second inertia pin, which is released from the retraction of the first inertia pin, .

Their operation is highly intuitive and clear, but there is no guarantee that the second inertial pin, which is unpinned by the movement of the fixture, will remain in that state once it retracts.

That is, the second inertia pin (the second inertia pin of the present invention), which substantially releases the rotational fixed state of the rotor, continuously pushes the retard gear (rotary delay gear) assembly at the upper end of the rotor while retracting and immediately advancing to elastic recovery So no one knows what kind of operational error this lateral gear compression would cause. If the inertia pin spring is set weakly to prevent this, it is not possible to guarantee safety during handling before launching.

On the other hand, Document (1) is disclosed before Documents (2) to (3). In document (1), the three inertia pins sequentially retract after the coiling.

The operation of the first and second inertia pins is the same as before, and the third pin, which is relatively tightly resiliently fixed, moves forward immediately after the operation of the second inertia pin and pushes another fixture into the upper surface of the second inertia pin The second inertia pin, i.e., the rotor unlocking pin, is prevented from retreating.

As described above, the document (1) is advantageous in that, unlike the documents (2) to (3), once the rotor releasing pin is retracted, it is reliably held in this state. However, the third pin (not the inertial pin), which is additionally provided for this purpose, increases the number of operating parts in the cramped interior of the fuse, thereby reducing the size (and inertia mass) of the individual components, resulting in poorer assemblability and reduced inertia And the reliability is lowered. Furthermore, in the third spring, which is tightly compressed to such an extent that it is strong enough to overcome it and move forward, the possibility of permanent deformation during long-term storage of the tube is also a problem to be considered.

SUMMARY OF THE INVENTION The present invention is intended to solve the drawbacks that have not been solved by the existing inertial rotor rotation and unlocking structures as described above.

In addition, in the process of solving the above-mentioned disadvantages, compared to the conventional inertia pin interlocking structure, a simpler structure, better assembling reliability and operational reliability that is not damaged even in long-term storage are secured, It is an additional object of the present invention to provide an improved rotary delay charging device capable of lowering the cost of manufacturing the entire fuse.

In order to solve the above-mentioned problems, first, the inertia pin that is holding (locking) the loading rotor is operated only after the firing, so that the lock is released, and once the unlocked inertia pin is released, Can not be locked again. Of course, in addition to the above conditions, inertia fins, especially the inertia pin holding the loading rotor, must be visually identifiable in the initial locking state during assembly of the new tube.

In the present invention, in order to satisfy the above requirement with the minimum number of inertia fins, it is possible to perform a two-step or three-step operation step with one inertia pin and an elastic pin supporting the inertia pin by changing the outer shape of the inertia pin itself And to be able to do so.

For example, the second inertia pin 62, which is caught in the rotor fixing hole 42 of the charging rotor, is formed in a reel shape having a narrow waist portion and a top and bottom portion. And a post-retirement movement based on the co-inertia force) can be achieved step by step.

As another technical means of organically combining with the above technical means, the present invention has been made to differentiate the inertia response characteristics of the second inertia pin 64 and the first inertia pin 62 for fixing or releasing it.

For example, the first inertia-sensitive spring 63 that elastically supports the first inertia pin 62 can be resiliently restored by overcoming the inertial load being supported before the inertia force of the retractor retracts. More specifically, the first inertia sensing spring 63 reaches the maximum compression state at the time when the second inertia fin 64 is retracted by setting the elastic force and the elastic stroke to a large value. The first inertia pin 62 already begins to advance long before the retracted second inertia pin 64 advances. This allows the fixture 66, which has been directed toward the first inertia pin, to be again directed back toward the second inertia pin without the action of another third inertia pin. As a result, at the time of advancement of the first inertia pin 62, the fixture 66 fixes the second inertia pin 64 in the retracted state again to unnecessarily advance the second inertia pin when the retracted inertia force is extinguished, It prevents you from raising it.

In addition to the above-mentioned preemptive solution means, the upper and lower support jaw structures for supporting the upper and lower of the fixture, the introduction of the spring base 60 member for improving the assemblability of the inertia fin and the inertia sensitive spring, Detailed structures and methods of implementation that specifically support the claims of the invention, including key means, refer to the detailed description below.

According to the present invention, even when the first inertia spring 63 pushing up the first inertia pin 62 pushes up the first inertia pin even in the retracted state of the second inertia pin 64, the second inertia pin 63 can be fixed again Therefore, the second inertia pin 64 once retracted prevents the rotation of the loading rotor 40 from interfering with the rotational motion of the loading rotor 40 during the flight of the shell.

In addition, since the inertia fins and the inertia sensitive springs supporting the inertial fingers are assembled by inserting the inertia fingers into the new pipe, the accurate initial position of the fastener and the second inertia pin can be easily determined by the structure of the spring base 60, It is possible to shorten overall assembly time and reduce assembly defects.

FIG. 1 is a perspective view showing a whole outer shape of a new pipe to which the present invention is applied; FIG.
2 is a representative diagram of the prior art documents (1) to (3).
3 is an exploded perspective view of a new tube to which the present invention is applied.
FIGS. 4 to 5 are perspective views showing the safety loading structure of the present invention inside a fuse; FIG.
FIG. 6 is an exploded assembly sectional view showing the safety loading structure of the present invention in a body housing of a fuse; FIG.
7 is an overall cross-sectional view showing the position of the inertia pin in the pre-spreading standby state.
8 is an overall cross-sectional view showing inertia pin positions immediately after the foaming operation;
Fig. 9 is an overall cross-sectional view showing inertia pin positions at a point outside the minimum safety distance after wrapping; Fig.
10 is an overall cross-sectional view showing the positions of inertia fins at the point of transition to the detonation enabling state after the wrapping.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG.

However, in the embodiments described below, the components expressed in the specific terminology and the combination structure thereof do not limit the technical idea that is included in the present invention in a comprehensive manner.

Figs. 1 and 3 to 7 show an overall external perspective view, an incision perspective view, an exploded perspective view, and a disassembly view and an overall cross-sectional view of a new tube to which the present invention can be applied. 7 shows a state in which the second inertia pin 64 is well engaged with the rotor fixing hole 42 of the loading rotor 40 and the first inertia pin 62 is also not retracted, It shows that it is in standby state.

A single primer (43) is shown on the cross section. Two or more primers (40) are mounted on the rotor (40), such as a primed primer that explodes immediately after impact, or a retard primer that explodes after the primed primer And is operable through a primer adjusting screw 51 that adjusts the total rotation angle.

Since the charging rotor 40 is designed to rotate about the rotor shaft 41 and the rotor shaft is shifted from the center of the body housing 50, the charging rotor 52 is rotated by a predetermined angle, (See FIG. 10).

In order to satisfy the minimum safety distance (40 m or more) after the firing without substantial damage to the aliens, the rotation time of the loading rotor (40) required for aerial alignment is secured so that the minimum rotation time of the rotor Lt; / RTI >

More specifically, the initial position of the primer before the occurrence of the explosion must be deviated from the connection gun 52 at the bottom. This is called a safety state and the safety pin must be able to be inserted into the rotor fixing hole 42 in order to secure a safety state before launching.

The core configuration of the present invention will be described with reference to FIGS. 4 to 7. FIG.

The entire structure of the new pipe can roughly be divided roughly into three parts: the nose housing 10, the body housing 50, and the explosive charge 53. The shock sensing unit 11 may be formed at the upper end of the nose housing 10 when the shock crown is a pipe. The mechanical sensing crown may be disposed at the lower end of the nose housing so as to strike the primer.

The body housing 50 performing the explosion alignment is where the safety loading structure of the present invention can be mounted.

The entire loading module including the loading rotor 40 and the rotor shaft 41 can be inserted and fixed in the upper and lower directions of the body housing 50 and the spring base The inertia fins 62 and 64 and the inertia sensitive springs 63 and 65 may be inserted and fixed. Inertial fins serving as safety pins are usually inserted in the same direction before insertion of the rotary loading module, but in the present invention, they are inserted from opposite sides (see FIG. 6).

Such a structure has a structure in which the inertia pins 62 and 64, the inertia-sensitive springs 63 and 65, and the fixture 66 for restricting and releasing motion between the inertia pins are integrally supported together (60).

The initial position of the rotor fixing hole 42 can be confirmed without any mistake by the spring base 60 and its assembling direction / structure as described above. When the two inertia fins and fixing member are inserted, the correct initial position of the fixing member 66 You can check it all at once without making a mistake.

Although not shown in the cross-sectional view, the spring base 60 can be easily and reliably engaged with one or two simple fastening bolts (see Fig. 5), and the fastener lower end tuck 61, which also serves as a partition between the inertia fins, ) Also performs well.

Since the lower end portion of the body housing 50 to which the spring base 60 is coupled is further provided with a fixing upper end tine 56 for supporting the upper end of the fixing member 66, Only in the left and right direction.

The fixture 66 is formed with a diameter larger than the gap between the first and second inertia fins 62 and 64 and is initially located in the waist recess of the second inertia pin 64, When the second inertia pin 62 is retracted, the second inertia pin 64 is released and the second inertia pin 64 is fixed again when the first inertia pin 62 advances.

The first inertia fin (62) is thin in the top and thick in the bottom, and is immediately retracted by the wrapping yarn. The first inertia-sensitive spring 63 elastically supporting the first inertia pin 62 is set to have a relatively strong elastic force such that the inertial load during the retraction of the retracted inertia force is canceled and the elastic inertia can be restored do.

The second inertia pin 64 is formed in a reel shape having a slender back and upper and lower portions as if the thread is wound around the thread and the lower surface of the loading rotor 40, And can move backward by the wrapping yarn in the same manner as the first inertia pin.

Referring to FIGS. 7 to 10, the specific cooperative motion of the fixture, the inertia pin, and the springs will be described step by step.

Note that in the specification and drawings of the present invention, retraction refers to the downward direction, and forward refers to the upward direction. The lower part in the drawing is the opposite direction of the wrapping yarn, that is, the backward direction, and the upper part in the drawing is the wrapping yarn direction and the advancing direction.

The first and second inertia fins, which are arranged side by side in the initial state before firing as shown in Fig. 7, tightly hold the charging rotor 40 by the fixing device. Since the thick lower portion of the first inertia fin 62 is formed sufficiently long, the weak inertia force of dropping or dropping the trunk on the floor causes the fixture 66, which is contained in the concave portion of the second inertia pin 64, I can never get out.

8 is a time point at which the retraction inertia force applied to the inertial fins is maximized. The first inertia pin 62 retracts to the maximum such that the narrow upper portion is lowered and the fastener 66 is slightly pushed to the left side. (The retraction inertia force of the second inertia pin 64 is applied to the concave portion As soon as the fastener is pushed, the second inertia pin starts retracting.

Fig. 9 can be interpreted as a time when the safety distance (the minimum distance that can prevent alien damage) has been just out of sight. Both the first inertia pin and the second inertia pin are retracted to the maximum extent.

In this state, if the first inertia-sensitive spring 63 is set to an elastic strength capable of advancing the first inertia pin 62, the retracting inertia force of the pulleys is still retracting the second inertia pin 64, The one inertia pin 62 can be moved forward (= upward).

10 shows that the first inertia pin 62 starts to rise and the first inertia pin 62 comes to the upper end side (right side direction) of the second inertia pin with the second inertia sensing spring 65 still flattened, (66). The first inertia pin 62 does not retreat again and consequently the fastener 66 can hold the second inertia pin 64 firmly at a sufficiently low position, The rotor 40 can perform rotational motion for aligning the rotor until the second inertia pin (= safety pin) enters the rotor fixing hole 42 again without worrying that the inertia pin will enter again.

It is not difficult to adjust the inertia mass of the first inertia pin 62 and the elastic force of the first inertia sensing spring 63 so as to adjust the moving time of the fixture 66. However, The most secure method is that the second inertia spring 65 which elastically supports the second inertia pin 64 is moved at least to the second inertia pin 64 so as to support only the weight of the second inertia pin 64 in a state in which the pull- As shown in Fig. It may be possible to remove the spring altogether, but it may be difficult to determine the initial position of the fixture during assembly. The second inertia sensing spring 64 appropriately protrudes when the fastener is not inserted into the waist-side concave portion of the second inertia fin in a state before the spring base 60 is inserted, so long as it is possible to judge in advance an assembly failure . The second inertia sensing spring 65 hardly protrudes from the surface to be in contact with the spring base 60 when the fastener 66 is properly inserted into the waist recessed portion and the first inertia sensing spring 63 does not protrude from the spring base 60 And the elasticity of the first inertia sensing spring 63 can be substantially adjusted, the overall operation reliability of the new tube is greatly improved as compared with the prior art, and even when it is stored for a long period of time It is possible to lower the probability of unexpected malfunction.

The technical idea of the present invention has been described above with reference to specific embodiments. It should be understood that the technical idea of the present invention should be construed on the basis of the contents described in the following claims rather than the technical interpretation category of the embodiment.

10: nose housing 11: shock sensing unit
36: Declination
40: reloading rotor 41: rotor shaft
42: rotor fixing hole 43: primer
44: rotation delay gear
50: Body housing 51: Rotor angle of rotation adjustment screw
52: Connection gunpowder 53: Explosive charge
54: first inertia pin hole 55: second inertia pin hole
56: Fixture upper jaw
60: spring base 61: fixture lower jaw
62: first inertia pin 63: first inertia sensitive spring
64: second inertia pin 65: second inertia spring
66: Fixture

Claims (4)

delete delete A loading rotor (40) mounted with at least one primer and housed in the body housing (50) and rotating around a rotor axis (41);
A second inertia pin (64) formed such that its waist and upper and lower portions are formed in a thin reel shape, arranged to face the upper end of the loading rotor (40), and moving backward by the wrapping yarn;
A first inertia pin 62 having a thin stomach and a thick bottom and disposed in parallel with the second inertia pin 64 and moving backward by the wrapping yarn;
A first inertia-sensitive spring (63) elastically supporting the first inertia pin (62) and restoring an inertial load being supported before the retractor inertial force of the collapsible body is extinguished;
A second inertia spring 65 for elastically supporting the second inertia pin 64; And
The first inertia pin 62 is formed to have a larger diameter than the gap between the first and second inertia fins 62 and 64 and is initially located in the waist recess of the second inertia pin 64, And a fixture (66) for releasing the second inertia pin (64) upon retraction and for securing the second inertia pin (64) again when the first inertia pin (62) is advanced,
The first inertia sensing spring 63 is set to have an elasticity strength capable of advancing the first inertia pin 62 even when the retracting inertial force of the retractor for retracting the second inertial pin 64 is in operation,
Wherein the second inertia sensing spring (65) is set to have an elastic strength capable of supporting only the weight of the second inertia fin (64) in a state in which the pulley retraction inertia force is not applied. rescue. The safety loading structure according to claim 3,
And a spring base (60) for supporting the inertial pins (62, 64), the inertia sensitive springs (63, 65) and the fixture (66) together,
The body housing 50 is further provided with a fixing upper end protrusion 56 for supporting the upper end of the fixing protrusion 66. The spring base 60 is provided with a fixture lower end protrusion 61 for supporting the lower end of the fixing protrusion 66 ) Is further formed,
Wherein the loading rotor 40 is inserted and fixed from the top to the bottom of the body housing 50 and the spring base 60 is inserted and fixed from the bottom to the bottom of the body housing 50. [ Loading structure.
KR1020160009735A 2016-01-27 2016-01-27 Safety charging mechanism for Shell fuse which is operated by the time variable change of setback force KR101666217B1 (en)

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KR1020160009735A KR101666217B1 (en) 2016-01-27 2016-01-27 Safety charging mechanism for Shell fuse which is operated by the time variable change of setback force

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180070157A (en) 2016-12-16 2018-06-26 주식회사 풍산 High current switch for power activation
KR20210026011A (en) 2019-08-29 2021-03-10 주식회사 풍산 The fuse having a module of delaying firing
KR102295915B1 (en) * 2020-09-01 2021-08-31 김홍덕 Shell fuse outer support and device for continuous manufacturing thereof and method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217828A (en) * 1977-09-09 1980-08-19 S.A. Prb, Societe Anonyme Safety device for fuses
EP0327706A2 (en) 1987-12-16 1989-08-16 Gebrüder Junghans Gmbh Projectile fuze
KR100675764B1 (en) 2000-01-05 2007-01-29 융한스 화인베르크테크닉 게엠베하 운트 코 카게 Fuse device, in particular for a mortar shell
US8342093B2 (en) 2008-10-30 2013-01-01 Junghans Microtec Gmbh Fuze for a projectile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217828A (en) * 1977-09-09 1980-08-19 S.A. Prb, Societe Anonyme Safety device for fuses
EP0327706A2 (en) 1987-12-16 1989-08-16 Gebrüder Junghans Gmbh Projectile fuze
KR100675764B1 (en) 2000-01-05 2007-01-29 융한스 화인베르크테크닉 게엠베하 운트 코 카게 Fuse device, in particular for a mortar shell
US8342093B2 (en) 2008-10-30 2013-01-01 Junghans Microtec Gmbh Fuze for a projectile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180070157A (en) 2016-12-16 2018-06-26 주식회사 풍산 High current switch for power activation
KR20210026011A (en) 2019-08-29 2021-03-10 주식회사 풍산 The fuse having a module of delaying firing
KR102295915B1 (en) * 2020-09-01 2021-08-31 김홍덕 Shell fuse outer support and device for continuous manufacturing thereof and method thereof
KR102347303B1 (en) * 2020-09-01 2022-01-04 김홍덕 Strip base material

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