KR100277214B1 - Mechanical lighting safety devices - Google Patents

Abstract

The present invention relates to a mechanical ignition safety device, in the case of a conventional ignition safety device according to the electrical method is not completely free from the surrounding electrical influence there is a risk of malfunction, and it is not possible to visually determine whether the operator is safe or armed To solve this problem by recognizing that there is a problem that can be caused by an operation error due to psychological anxiety, the body is formed with a piston passage in the longitudinal direction and the propulsion engine insertion portion is formed to communicate laterally with the piston passage, A piston mounted to be movable along the piston passage, an ignition member fixed to one end of the body in a lengthwise direction such that a powder cup installed at one end thereof faces one side of the piston, and operated according to an operator's operation to control the movement of the piston. Piston selectively done to block or allow It provides a mechanical ignition safety device comprises a means of gold.

Description

Mechanical lighting safety devices

The present invention relates to a mechanical ignition safety device that can be applied to the propulsion engine of a missile or a rocket. Ignition means that the propulsion engines used in missiles or rockets supply energy to start combustion. Usually, the propulsion engines are ignited by using an igniter.

1 is a partial cross-sectional view schematically showing a state in which a conventional ignition machine is coupled to a propulsion engine, and as shown in FIG. 1, an ignition agent 3 and one side of a propulsion engine case 2 having a propellant 1 contained therein. While the ignition pill 4 adjacent thereto is inserted, one end where the gunpowder cup 5a is installed is adjacent to the ignition pill 4 and the part except the gunpowder cup 5a on the outside of the propulsion engine case 2 is The igniter 5 is installed to be exposed.

In the conventional propulsion engine and the igniter having the structure as described above, when the igniter 5, which is generally operated by electricity, is operated by the operator's operation, the flame is ignited while the powder cup 5a at the end is exploded As it is delivered to the pill 4 and back to the igniter 3 and to the propellant 1, the propulsion engine starts combustion.

However, as described above, the conventional configuration consisting of only the igniter 5 and the propulsion engine has the following problems.

First, as described above, since the igniter 5 is mainly operated by electricity, there is a possibility that the igniter 5 may be accidentally operated by static electricity or electromagnetic waves generated in the vicinity thereof. There is a need for safety measures to prevent this, which can cause huge damage to the property. Accordingly, conventionally, a method of additionally adding an electric relay or a switch to a launcher for operating the igniter 5 has been mainly used, and this method is also an electric method, and thus the possibility of accidental operation by static electricity or electromagnetic waves is used. There was a problem that cannot be completely excluded.

Next, in the conventional configuration, there is a problem that the worker working near the rocket cannot visually check whether the rocket is in a non-launchable state or a launchable state, thereby causing a psychological anxiety state and causing a mistake.

Therefore, the object of the present invention created by recognizing the above-mentioned problems prevents the combustion of the propulsion engine even when the igniter is accidentally operated, and can be visually checked whether it is in a launchable state or a non-launchable state. It is to provide an ignition safety device that can prevent the operation mistakes by promoting the psychological stability of the operator by.

1 is a partial cross-sectional view schematically showing a state in which a conventional ignition machine is coupled to a propulsion engine.

Figure 2 is a partial cross-sectional view schematically showing a state in which the mechanical ignition safety device coupled to the propulsion engine according to an embodiment of the present invention.

3 is a cross-sectional view showing a safe state of the mechanical ignition safety device according to an embodiment of the present invention.

4 is a partial cutaway cross-sectional view showing the armed state of the mechanical ignition safety device according to an embodiment of the present invention in a direction different from that shown in FIG.

5 is an exploded perspective view of the locking bar and its rotating means according to the present invention;

Fig. 6A shows the correlation between the handle and the handle support plate in a safe state.

Fig. 6B shows the relationship between the handle and the handle support plate in the armed state.

7 shows the operation after the igniter operation in the armed state.

*** Explanation of symbols for main parts of drawing ***

One; Propellant 2; Propulsion Case

3; Ignition agent 4; Ignition pills

5; Complexing device 5a; Gunpowder Cup

10; Piston passage 11; Propulsion Inlet

11a; Gunpowder cup 11b; Gunpowder stopper

12; Piston 12a; Home

12b; Peak 12c; O-ring

13; Locking rod 13a; Arc-shaped recess

13b; Cavity 13c; Slide home

13d; Groove 13e; O-ring

14; Blocking plate 14a; Blocking plate plug

15; Spring 16; Spring housing

16a; Projection 17; handle

17a; Pin 18; Handle support plate

18a; Hole 18b; Pin groove

18c; Projection insertion groove 19; Hang bar fixing bolt

In order to achieve the object of the present invention as described above, the body and the piston passage is formed in the longitudinal direction and the propulsion engine insertion portion is formed so as to be in lateral communication with the piston passage, mounted so as to be movable along the piston passage of the body And a ignition member fixed to one end of the body in a lengthwise direction such that a powder cup installed at one end thereof faces one side of the piston, and selectively operated to prevent or allow movement of the piston by being operated by an operator. A mechanical ignition safety device is provided which comprises a piston locking means.

Hereinafter, the present invention will be described in detail with reference to an embodiment of the present invention shown in the accompanying drawings.

Figure 2 is a cross-sectional view schematically showing a state in which the mechanical ignition safety device coupled to the propulsion engine according to an embodiment of the present invention, Figure 3 shows a safety state of the mechanical ignition safety device according to an embodiment of the present invention. 4 is a partial cross-sectional view showing the armed state of the mechanical ignition safety device according to an embodiment of the present invention in a direction different from the direction shown in FIG.

As shown in the drawing, in the mechanical ignition safety device according to the present invention, the piston passage 10 is formed in the longitudinal direction, and the propulsion engine insertion portion 11 is formed to one side so as to communicate with the piston passage 10 laterally. It is configured to include a body. The piston 12 is mounted inside the body so as to be movable along the piston passage 10, and the ignition machine 5 is installed at one end in the longitudinal direction of the body, and the gunpowder cup 5a is installed at one end of the ignition machine 5. It is installed to face one side of the piston (12). On the other hand, a piston locking means which is operated according to the operator's operation to selectively prevent or allow the movement of the piston 12 is installed, the piston locking means in the locked state, the piston 12 is the piston passage 10 Even when the force in the longitudinal direction of the to prevent movement, in the open state to allow the piston 12 to be moved by the force in the longitudinal direction of the piston passage (10).

Although not shown as the piston locking means to form a through passage for penetrating the piston in the lateral direction and to form a through hole corresponding to the through passage in the body and having a rod having a diameter similar to the through passage and the through hole, In the case of preventing the longitudinal movement of the piston, a variety of means can be conceived, including a configuration in which the rod is matched with the passage and then the rod is inserted to allow movement. It must be strong enough to withstand the piston without being destroyed by the force to move it.

In the embodiment shown in the drawing, the locking groove 12a formed on one side of the piston 12 and the locking groove 12a when caught by the locking groove 12a to prevent movement of the piston 12 and rotated at an angle. It provides a piston locking means comprising a locking rod (13) to allow the movement of the piston 12 is not caught. The locking rod 13 preferably has an arcuate recess 13a as shown in FIG. 4 to allow longitudinal movement of the piston 12 when in the armed or open state. In addition, the locking groove 12a has an arcuate cross section so that the locking bar 13 is caught by the locking bar 13 when the locking bar 13 is in a safe or locked state of FIG. 3, which is rotated 90 ° from the armed state of FIG. 4. It is preferably formed.

3 and 4, the gunpowder cup 11a is provided toward the piston passage 10, and the ignition pills 4 are adjacent to the gunpowder cup 11a. This is put. Reference numeral 11b denotes an explosive stopper that closes the end portion of the ignition pellet 4 of the propulsion engine insertion portion 11. At this time, the lower end of the gunpowder cup (11a) is assembled in the form hanging on the piston 12 side as shown in Figure 3 and 4 so that it can be cut by the movement of the piston (12).

An apex 12b is formed on a surface of the piston 12 facing away from the igniter 5, and the piston 12 is located at an end opposite to the igniter 5 of the piston passage 10. A blocking plate 14 is installed to prevent the valve from being separated, and the blocking plate 14 is ruptured by the rod 12b when the piston 12 moves and collides with the blocking plate 14. It is preferable to attach 14a), which is to visually check whether the mechanical ignition safety device according to the present invention is operated.

On the other hand, the catching rod 13 requires a rotation means for rotating the catching rod 13 as necessary, although not shown as such means that the catching rod is extended to simply protrude to one side of the body, or protruded end It is conceivable to install a mechanical means such as a transverse rod so that it can rotate with a small force. In one embodiment of the present invention, as well as function as a rotating means for rotating the locking rod 13 has been created a configuration that allows the operator to clearly distinguish between the armed state or the safe state, which is shown in Figures 4 and 5 Is shown.

As shown in the figure, the cavity 13b in the longitudinal direction is formed at one end of the engaging rod 13, and the spring 15 and one end of the spring 15 are inserted into the cavity 13b. The spring housing 16 is inserted, and the end of the spring housing 16 where the spring 15 is not inserted is formed with a key groove protruding outward and a protrusion 16a protruding toward the front of the key groove. A handle 17 is provided to push an end portion of the spring housing 16 into which the spring 15 is not inserted, and one end of the spring housing 16 protrudes and installs a pin 17a that can be fitted into the key groove. At one side portion of the spring housing 16 is formed a slide groove (13c) which can be inserted into the key groove and the projection (16a) portion protruding to the predetermined depth, the engaging rod length direction of the handle 17 A hole through which the body passes is formed to support the handle 17. One pin groove 18b is formed so that the pin 17a of the handle 17 can pass only in the armed state, and a protrusion insertion groove 18c into which the protrusion 16a of the spring housing 16 can be inserted. The handle support plate 18 is formed to be provided at a 90 ° angle with the pin groove 18b. In the drawings, reference numeral 19 is a locking rod fixing bolt for preventing the longitudinal movement of the locking rod 13, and the locking rod 13 has a predetermined width groove into which the locking rod fixing bolt 19 can be fitted. 13d is formed so that the circumferential rotation of the locking rod 13 can be prevented from moving in the longitudinal direction. In the drawings, reference numerals 12c and 13e are O-rings respectively mounted to the piston 12 and the locking rod 13 to maintain airtightness.

The cavity 13b of the catching rod 13 and the outside of the spring housing 16 and the outside of the catching rod 13 longitudinal body of the handle 17 are polygonal in cross-sectional shape as shown in FIG. It is preferable to form.

Referring to the operation of the mechanical ignition safety device according to the present invention having the structure as described above are as follows.

In the safe state or the locked state shown in FIG. 3, the igniter 5 operates to apply pressure to one side of the piston 12 while exploding the powder cup 5a attached to one end of the igniter 5. Since the locking groove 12a of the 12 is caught by the locking rod 13 and the longitudinal movement of the piston 12 is prevented, the flame is blocked by the piston 12 and the O-ring 12c, and the propelling engine insertion part ( 11) The propulsion engine is not ignited because it does not reach the gunpowder cup 11a. At this time, the handle 17 for rotating the locking rod 13 has a safety state indicated by S in a state in which the pin 17a of the handle 17 is rotated 90 ° from the pin groove 18b as shown in FIG. 6A. It is in a state of being pinched between the handle support plate 18 and the key groove of the spring housing 16 while facing the direction shown, and the protrusion 16a of the spring housing 16 is the protrusion insertion groove 18c at the portion indicated by S. The spring housing 16 is prevented from being rotated by an external impact by being assembled by being fitted in the state of being fitted to the spring 15, and the locking rod 13 into which the spring housing 16 is inserted is also prevented. Its slide groove 13c is caught in the portion where the keyway and the projection 16a of the spring housing 16 is formed, and the cavity 13b formed in the polygon is engaged with the outside of the polygonal shape of the spring housing 16 to prevent rotation. do.

Now, in order to ignite the propulsion engine, when it is desired to switch to the armed state or the open state, first push the handle 17 to separate the protrusion 16a from the protrusion insertion groove 18c, and then 90 ° from the safe state as shown in FIG. 6B. The handle 17 is turned by an angle so that the pin groove 18b at the position indicated by A of the handle support plate 18 indicating the armed state coincides with the pin 17a of the handle 17. In this way, while the polygonal shape of the handle 17 is inserted into the polygonal cavity 13b of the locking rod 13, the locking rod 13 is rotated to rotate the locking rod 13 as shown in FIG. 4. The recess 13a is positioned so as not to interfere with the longitudinal movement of the piston 12, and the handle 17 is separated from the safety device by the coincidence of the pin groove 18b and the pin 17a. In this state, when the ignition device 5 is operated and the powder cup 5a of the ignition device 5 explodes, the explosion pressure pushes the piston 12 to move the piston 12 to the propulsion engine insertion part 11. The piston 12 is stopped by the blocking plate 14 while cutting the mounted powder cup 11a and the rod 12b of the piston 12 ruptures the blocking plate stopper 14a. At the same time, the flame from the gunpowder cup 5a of the igniter 5 ignites the gunpowder cup 11a of the propulsion engine insert 11 cut by the piston 12 as shown in FIG. Again, the ignition pill 4 is ignited above and eventually the propulsion engine is ignited.

As described above, the piston 12 moved at the time of ignition penetrates the blocking plate plug 14a by its rod 12b so that the safety device can be visually observed. The leak is prevented by the O-rings 12c and 13e mounted on the locking rod 13 and the piston 12. In the armed state, the handle 17 can be confirmed to be armed by being separated. In the safe state, the handle 17 is not separated and the protrusion 16a of the spring housing 16 is fitted into the protrusion insertion groove 18c. It is in a state and can confirm.

In order to confirm the safety performance, it was confirmed that the gunpowder cup of the ignition insert was not cut by adding an additional powder (0.5g of BKNO ₃ Ⅱ-B pellets) in addition to the igniter (approximately 0.25g powder) in a safe state. After the test, water pressure was applied for 1 minute at 3,000 psi higher than the normal rocket internal pressure to confirm that there was no leakage at all.

In addition, the mechanical ignition safety device was applied to a rocket having an internal pressure of about 1,000 psidl and a combustion time of several seconds, and ignition was successful, and it was confirmed that there was no leakage by applying water pressure at 3,000 psi for 1 minute after the test.

Mechanical ignition safety device according to the present invention having the structure as described above is to prevent the combustion of the propulsion engine even during accidental operation of the igniter by mechanically preventing the movement of the piston by a locking rod having a sufficient strength. This function can be performed without any electric influences such as an external magnetic field, and the operator can easily check whether it is in a safe state or an armed state with the attachment of the handle. There is an effect that can be prevented.

Claims (5)

A piston passage is formed in a longitudinal direction and a body in which a propulsion engine insertion portion is formed so as to communicate laterally with the piston passage, a piston mounted to be movable along a piston passage of the body, and a gunpowder cup installed at one end of the piston And a ignition member fixed to one end in the longitudinal direction of the body so as to face one side, and a piston locking means that is selectively operated to prevent or allow movement of the piston by an operator's operation. According to claim 1, The piston locking means is a locking groove formed on one side of the piston and the locking groove to prevent the movement of the piston is caught by the locking groove and is not caught by the locking groove when rotated by a certain angle to allow the movement of the piston Mechanical ignition safety device, characterized in that the piston locking means comprising a. The mechanical ignition safety device according to claim 1, wherein the propellant insertion part is assembled with a gunpowder cup so as to be cut by movement of a piston. According to claim 1, wherein the side of the piston facing the opposite side of the igniter is formed with a tip, the opposite end of the ignition of the piston passage is equipped with a blocking plate to prevent the piston from leaving the piston passage, the blocking plate is a piston A mechanical ignition safety device, characterized in that the closure plate stopper that is ruptured by the tip when attached to the blocking plate is moved. According to claim 2, wherein a longitudinal cavity is formed in one end of the engaging rod, a spring and a spring housing into which one end of the spring is inserted are inserted, and an outer side of the spring housing is not inserted into the cavity. A protruding portion protruding toward the front toward the front of the key groove is formed, and a handle is pushed to an end portion on which the spring of the spring housing is not inserted, and a pin which can be fitted into the key groove protrudes at one end thereof. Is installed, one side of the cavity is formed with a slide groove that can be inserted into the key groove and the projection portion projecting to the outside of the spring housing to a predetermined depth, a hole through which the engaging rod longitudinal body of the handle is formed is formed One pin groove is formed to support the handle and allow the pin of the handle to pass through only in the armed state. Mechanical ignition safety device provided with a handle support plate formed with a 90 ° angle to the pin groove is a projection insertion groove into which the projection of the spring housing can be inserted.