Dual-Cutting Explosive Bolt Using a Single Igniter and Operation Method Thereof

Abstract

The first objective of the present invention is to provide a double-cutting explosive bolt using a single ignition device and a method of operating the same, which can form two cutting surfaces with only a single ignition device and a single electric inlet, thereby improving the cutting reliability of the explosive bolt while simultaneously achieving simplification of the system configuration. To achieve the above objective, a double cutting explosive bolt using a single ignition device according to one embodiment of the present invention comprises: an ignition device ignited by a single electric application; a connecting explosive connected to the ignition device and ignited by high temperature and high pressure gas; a T-shaped separating explosive connected to the connecting explosive and branched in both directions to perform independent cutting operations; a first fixing member and a second fixing member each coupled to both ends of the T-shaped separating explosive to fix a structure to be cut; and a first fastening member and a second fastening member for fastening and fixing the first fixing member and the second fixing member to the structure.

Description

Technology Field

[0001] The present invention relates to a double-cutting explosive bolt and a method of operating the same, and in particular to a double-cutting explosive bolt using a single ignition device capable of creating two cutting surfaces with only a single electrical input by a single ignition device, and a method of operating the same. Background Technology

[0003] In general, explosive bolts are widely used as a means to instantaneously release or separate the fastening state of structures.

[0004] In particular, it is applied as an essential component in fields requiring rapid and reliable release, such as the aerospace and defense industries, warhead separation systems, or emergency separation structures for mechanical devices.

[0005] Conventional explosive bolts include a single ignition device and a straight separating charge, and when an electric ignition signal is applied to the ignition device, the ignition device operates and the internal charge is ignited to create a cutting surface, thereby releasing or separating the fixation of the structure.

[0006] While this conventional technology has the advantages of being simple and highly reliable, it has a limitation in that the cutting surface corresponding to a single electrical ignition signal is generally a single structure, leaving no room for retrying in the event of a cutting failure.

[0007] To improve these problems, a double cutting structure having two ignition sources and two cutting sections has been proposed, but in this case, there are technical burdens such as increased system complexity due to the increase in the number of ignition sources, the need for redundancy in circuit design, increased weight, and difficulty in securing installation space.

[0008] Therefore, there is a need for a technology that can secure two cutting surfaces while using only a single ignition source. This is expected to be technically very useful as it improves cutting reliability and can be applied without modifying the structure of existing systems. Prior art literature

[0010] Korean Registered Patent No. 10-2738793 The problem to be solved

[0011] The first objective of the present invention, which is to solve the conventional problems described above, is to provide a double-cutting explosive bolt using a single ignition device and a method of operating the same, which can form two cutting surfaces with only a single ignition device and a single electric inlet, thereby improving the cutting reliability of the explosive bolt and simultaneously achieving simplification of the system configuration.

[0012] In addition, the second objective of the present invention is to provide a double-cutting explosive bolt using a single ignition device and a method of operation thereof, which can be directly applied to existing systems and is easy to install without changing the circuit design, by maintaining the same electrical circuit structure as the existing single-cutting explosive bolt while providing a function to form multiple cutting surfaces through a change in the internal structure.

[0013] In addition, the third objective of the present invention is to provide a double-cutting explosive bolt using a single ignition device and a method of operating the same, which can simultaneously realize horizontal splitting or symmetrical splitting of the cutting surface by applying a T-shaped separating explosive instead of a straight separating explosive, thereby realizing an explosive propagation structure capable of spreading in both directions from a single ignition source.

[0014] In addition, the fourth objective of the present invention is to provide a dual-cutting explosive bolt using a single ignition device and a method of operation thereof, suitable for high-reliability environments such as aerospace, defense industry, and emergency rescue systems, by ensuring structural stability that can reduce the probability of cutting failure and significantly improve the cutting success rate along with simplifying the configuration. means of solving the problem

[0016] To achieve the above objective, a double cutting explosive bolt using a single ignition device according to one embodiment of the present invention comprises: an ignition device ignited by a single electric application; a connecting explosive connected to the ignition device and ignited by high temperature and high pressure gas; a T-shaped separating explosive connected to the connecting explosive and branched in both directions to perform independent cutting operations; a first fixing member and a second fixing member each coupled to both ends of the T-shaped separating explosive to fix a structure to be cut; and a first fastening member and a second fastening member for fastening and fixing the first fixing member and the second fixing member to the structure.

[0017] In addition, in a double cutting explosive bolt using a single ignition device according to the present invention, the T-shaped separating explosive is detonated in both left and right directions according to the single ignition operation of the ignition device, and the first fixing member and the second fixing member each form independent cutting surfaces, thereby separating the structure.

[0018] In addition, in a double-cutting explosive bolt using a single ignition device according to the present invention, the ignition device includes an electric ignition element and is characterized by the fact that current is applied from a single power supply line to ignite the internal explosive.

[0019] In addition, in the double-cutting explosive bolt using a single ignition device according to the present invention, the connecting explosive has a straight structure and is characterized by communicating between the ignition device and the T-shaped separating explosive.

[0020] In addition, in the double-cutting explosive bolt using a single ignition device according to the present invention, the T-shaped separating explosive is characterized by having explosive filled inside a tubular passage that branches symmetrically from the center to both sides.

[0021] In addition, in a double cutting explosive bolt using a single ignition device according to the present invention, the first fixing member and the second fixing member are coupled to a structure to be cut and are characterized by including a weakening member to induce a fracture area when an explosion is operated.

[0022] In addition, in the double cutting explosive bolt using a single ignition device according to the present invention, the first fastening member and the second fastening member are characterized by being formed in a bolt-nut or screw fastening method that fixes the first fixing member and the second fixing member to a structure or external configuration, respectively.

[0023] In addition, the double-cutting explosive bolt using a single ignition device according to the present invention is characterized in that the explosion propagation characteristics of the T-shaped separating explosive are formed to operate uniformly in both directions without a time difference to prevent total cutting failure in the event of ignition failure.

[0024] In addition, in the double-cutting explosive bolt using a single ignition device according to the present invention, the two ends of the T-shaped separating explosive are each positioned at different parts of the structure to be cut, thereby simultaneously performing bidirectional cutting of the structure.

[0025] In addition, to achieve the above objective, a method of operating a double-cutting explosive bolt using a single ignition device according to another embodiment of the present invention comprises: a first step of applying an electric signal to a single ignition device to activate a detonation means inside the ignition device; a second step of igniting a high-temperature, high-pressure gas generated in the ignition device by transmitting it through a connecting explosive; a third step of transmitting explosive energy to both directions of a connected T-shaped separating explosive through the ignition of the connecting explosive; and a fourth step of performing separation of a structure to be cut by simultaneously forming a first cutting surface and a second cutting surface through the explosion of both sides of the T-shaped separating explosive.

[0026] In addition, in the method of operating a double-cutting explosive bolt using a single ignition device according to the present invention, the first step is characterized by supplying an ignition current to the ignition device through a single power supply line.

[0027] In addition, in the method of operating a double-cutting explosive bolt using a single ignition device according to the present invention, the second step is characterized by transferring the detonation energy of the ignition device to the center of the T-shaped separating explosive along a straight conduit.

[0028] In addition, in the method of operating a double-cutting explosive bolt using a single ignition device according to the present invention, the third step is characterized by inducing an explosion uniformly within the branched explosives on both sides, either simultaneously or without a time difference.

[0029] In addition, in the method of operating a double cutting explosive bolt using a single ignition device according to the present invention, the fourth step is characterized by inducing fracture along the cutting weakening area of ​​each of the first fixing member and the second fixing member disposed at both ends of the T-shaped separating explosive.

[0030] In addition, in the method of operating a double-cut explosive bolt using a single ignition device according to the present invention, the fourth step is characterized by the first fastening member and the second fastening member being released, which are configured to be independent from the main body to which the cut first fixing member and the second fixing member are connected and detached to the outside.

[0031] In addition, in the method of operating a double-cutting explosive bolt using a single ignition device according to the present invention, the first step is characterized by being performed through an ignition part configured by a nichrome wire or a friction ignition method.

[0032] In addition, in the method of operating a double-cutting explosive bolt using a single ignition device according to the present invention, the fourth step is characterized by monitoring whether the first cutting surface and the second cutting surface are operating through a detection sensor and determining whether the cutting is completed.

[0033] Meanwhile, to achieve the above objective, a double-cutting explosive bolt using a single ignition device according to another embodiment of the present invention is characterized by operating by the method of operating a double-cutting explosive bolt using a single ignition device.

[0035] Specific details of other embodiments are included in "Specific details for implementing the invention" and the attached "drawings".

[0036] The advantages and / or features of the present invention and the methods for achieving them will become clear by referring to the various embodiments described below in detail together with the accompanying drawings.

[0037] However, it should be understood that the present invention is not limited to the configurations of each embodiment disclosed below, but may be implemented in various different forms, and that each embodiment disclosed in this specification is provided merely to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the present invention, and that the present invention is defined only by the scope of each claim of the claims. Effects of the invention

[0039] As such, according to the present invention, two cutting surfaces can be created with only a single ignition and a single electric inlet, thereby significantly improving the cutting reliability of the explosive bolt, and accordingly, the risk of cutting failure or inability to separate that may occur in a conventional single cutting structure can be substantially eliminated.

[0040] In addition, according to the present invention, since the structure uses only one ignition device, the circuit design is simpler compared to the conventional double-cutting method using multiple ignition devices, and the problems of complexity and weight increase in the power supply system can be simultaneously solved, thereby contributing to the miniaturization, lightweighting, and design simplification of the system.

[0041] In addition, according to the present invention, by applying a T-shaped separating explosive, a structure can be realized in which the explosive energy generated from a single ignition device is simultaneously transmitted in the left and right directions and leads to each cutting surface, thereby ensuring simultaneity and uniformity of the cutting action, and consequently, the effect of enabling balanced separation of the structure or stable release operation is achieved.

[0042] In addition, according to the present invention, since high compatibility is maintained with conventional single-cut explosive bolt systems, it can be applied to existing systems without major structural changes, and has the effect of being effectively applied to high-reliability fields, particularly in aerospace, defense industries, or emergency separation systems for machinery.

[0043] Furthermore, according to the present invention, it provides excellent effects in various aspects such as operational reliability, design efficiency, ease of manufacturing, convenience of installation, and system integration, and has high commercial and technical utility value in technical fields requiring high-reliability separation mechanisms. Brief explanation of the drawing

[0045] FIG. 1 is a diagram showing the configuration of a double-cutting explosive bolt using a single ignition device in a double-cutting explosive bolt using a single ignition device and a method of operating the same according to an embodiment of the present invention. FIGS. 2 to 4 are drawings illustrating the assembly procedure of a double-cutting explosive bolt using a single ignition device and the method of operation thereof according to an embodiment of the present invention. FIGS. 5 to 8 are drawings illustrating the double cutting bolt operation procedure in the double cutting explosive bolt using a single ignition device and the method of operation thereof according to an embodiment of the present invention. FIGS. 9 and 10 are drawings showing the fastening and separation states of a double-cutting explosive bolt through double voltage input in a double-cutting explosive bolt using a single ignition device according to an embodiment of the present invention. FIG. 11 is a flowchart showing the overall flow of the operation method of a double-cutting explosive bolt using a single ignition device according to an embodiment of the present invention. Specific details for implementing the invention

[0046] Before describing the present invention in detail, it should be understood that the terms and words used in this specification should not be interpreted as being limited to their ordinary or dictionary meanings, and that the inventor of the present invention may appropriately define and use the concepts of various terms to best describe their invention, and furthermore, that these terms and words should be interpreted in a meaning and concept consistent with the technical spirit of the present invention.

[0047] In other words, it should be understood that the terms used in this specification are used merely to describe preferred embodiments of the present invention and are not intended to specifically limit the content of the present invention, and that these terms are defined in consideration of the various possibilities of the present invention.

[0048] In addition, it should be noted that in this specification, singular expressions may include plural expressions unless the context clearly indicates a different meaning, and that even if they are expressed in a similarly plural form, they may include a singular meaning.

[0049] Throughout this specification, where it is stated that a component "includes" another component, unless specifically stated otherwise, this may mean that it does not exclude any other component but may include any other component.

[0050] Furthermore, it should be noted that in cases where it is stated that a component "exists inside or is installed in connection with" another component, this component may be installed in direct connection or contact with the other component, or it may be installed at a certain distance apart, and in the case where it is installed at a certain distance apart, there may be a third component or means for fixing or connecting the component to the other component, and a description of this third component or means may be omitted.

[0051] On the other hand, if it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there is no third component or means.

[0052] Likewise, other expressions describing the relationship between each component, such as “between” and “right between”, or “adjacent to” and “directly adjacent to”, should be interpreted as having the same intent.

[0053] In addition, it should be understood that in this specification, terms such as “one side,” “other side,” “one side,” “other side,” “first,” “second,” etc., are used to clearly distinguish one component from another component, and that the meaning of the component is not restricted by such terms.

[0054] In addition, position-related terms such as "up," "down," "left," and "right" used in this specification should be understood as indicating the relative position of the corresponding component in the drawing, and unless an absolute position is specified, these position-related terms should not be understood as referring to an absolute position.

[0055] Furthermore, in specifying the reference numerals for each component of each drawing in this specification, the same component has the same reference numeral even if it is shown in different drawings; that is, the same reference numeral throughout the specification indicates the same component.

[0056] In the drawings attached to this specification, the size, position, connection relationships, etc., of each component constituting the present invention may be described in a partially exaggerated, reduced, or omitted manner for the convenience of explanation or to sufficiently clearly convey the concept of the present invention, and therefore, the proportions or scale may not be strictly accurate.

[0057] In addition, in the following description of the present invention, detailed descriptions of components that are deemed to unnecessarily obscure the essence of the present invention, such as known technologies including prior art, may be omitted.

[0059] Hereinafter, embodiments of the present invention will be described in detail with reference to the relevant drawings.

[0061] FIG. 1 is a diagram showing the configuration of a double-cutting explosive bolt using a single ignition device in a double-cutting explosive bolt using a single ignition device and a method of operating the same according to an embodiment of the present invention.

[0062] Referring to FIG. 1, a double cutting explosive bolt (1000) using a single ignition device according to one embodiment of the present invention comprises an ignition device (400) that is ignited by a single electric application, a connecting explosive (500) that is connected to the ignition device (400) and ignited by high temperature and high pressure gas, a T-shaped separating explosive (100) that is connected to the connecting explosive (500) and branches in both directions to perform independent cutting operations, a first fixing member (300) and a second fixing member (200) that are respectively coupled to both ends of the T-shaped separating explosive (100) to fix a structure to be cut, and a first fastening member (600) and a second fastening member (700) for fastening and fixing the first fixing member (300) and the second fixing member (200) to a structure.

[0063] Here, according to the single ignition operation of the igniter (400), the T-shaped separating explosive (100) is detonated in both left and right directions, and the first fixing member (300) and the second fixing member (200) each form independent cutting surfaces, thereby separating the structure.

[0064] This ignition device (400) includes an electric ignition element, and current is applied from a single power supply line to ignite the internal gunpowder.

[0065] Additionally, the connecting explosive (500) has a straight structure and connects the ignition device (400) and the T-shaped separating explosive (100).

[0066] These T-shaped separating explosives (100) are filled with explosives inside tubular passages that branch symmetrically from the center to both sides.

[0067] Meanwhile, the first fixing member (300) and the second fixing member (200) are combined with the structure to be cut and may include a weakening part (not shown) to induce a fracture area when an explosion is operated.

[0068] Additionally, the first fastening member (600) and the second fastening member (700) may be formed in a bolt-nut or screw fastening manner to fix the first fixing member (300) and the second fixing member (200) to a structure or external configuration, respectively.

[0069] In a double-cutting explosive bolt (1000) using a single ignition device according to the present invention, the explosion propagation characteristics of the T-shaped separating explosive are formed to operate uniformly in both directions without a time difference to prevent total cutting failure in the event of ignition failure.

[0070] In addition, in the double cutting explosive bolt (1000) using a single ignition device according to the present invention, both ends of the T-shaped separating explosive (100) are each placed at different parts of the structure to be cut, so that bidirectional cutting of the structure can be performed simultaneously.

[0072] To explain in more detail, the T-shaped separating explosive (100) is a core separating explosive configured to split explosive force in both directions by the ignition operation of a single ignition device (400) so as to simultaneously form cutting surfaces formed on both sides of the structure.

[0073] The T-shaped separating explosive (100) is formed as a tubular structure extending symmetrically from the center to the left and right, and is filled with high-energy separating explosive to act as an explosion propagation path.

[0074] More specifically, the T-shaped separating explosive (100) is composed of a central main body (not shown) and a left branch (not shown) and a right branch (not shown) extending to the left and right, respectively, from the central main body.

[0075] The central main body is connected to the connecting explosive (500), and the connecting explosive (500) has a structure that receives high-temperature, high-pressure gas generated when the igniter (400) is operated and is directly ignited.

[0076] When an electric signal is applied from the ignition device (400), detonation occurs by the internal ignition element, and the high-temperature, high-pressure working gas generated by this propagates along the connecting explosive (500).

[0077] At this time, the connecting explosive (500) is pre-ignited to amplify the explosive energy, and this energy is simultaneously transferred to the left and right branches of the T-shaped separating explosive (100) through the central main body.

[0078] The left branch and the right branch are positioned at locations corresponding to the first fixed member (300) and the second fixed member (200), respectively, and a weakening portion for cutting induction is formed inside the fixed member or in the contact area.

[0079] Therefore, the branched explosion energy transmits impact force to each fixed member, simultaneously forming cut planes in both left and right directions.

[0080] In particular, the internal explosive filling of the T-shaped separating explosive (100) is formed to have uniform density and ignition sensitivity characteristics in the left and right directions, thereby enabling the explosion propagation speed and pressure to perform a synchronized explosion action without a time difference.

[0081] Through this, two cutting planes can be formed rapidly and simultaneously with a single ignition signal, ensuring complete separation of the structure.

[0082] In addition, unlike a conventional straight-type separating explosive, the T-shaped separating explosive (100) of the present invention has a structure that branches into two directions from a single ignition source, so it does not require multiple ignitioners (400), and accordingly, the electrical circuit configuration, power supply, control system, etc. can be simplified.

[0083] This provides additional benefits such as reduced weight of the entire system, improved design freedom, and cost reduction.

[0084] In other words, the T-shaped separating explosive (100) according to the present invention can simplify the structure by realizing bidirectional cutting with only the operation of a single ignition device (400), has an energy transfer structure through a central main body connected to a connecting explosive (500), enables uniform bidirectional explosion propagation through left and right branching parts, can simultaneously form cutting surfaces on each of the first fixed member (300) and the second fixed member (200), can secure a double cutting function without a complex multiple ignition circuit, and can secure reliable cutting action and structural separation.

[0085] Accordingly, the T-shaped separating explosive (100) of the present invention can have a separating explosive structure capable of stably and effectively performing double cutting with only a single electric application.

[0087] Next, the first fixed member (300) and the second fixed member (200) are key operating members for receiving explosive energy generated at both ends of the T-shaped separating explosive (100) by the ignition operation of a single ignitioner (400) to cut and separate the structure to be cut in both directions.

[0088] Each fixed member (200, 300) is a component that is combined with the structure of the explosive bolt and is installed corresponding to each of the two ends of the T-shaped separating explosive (100).

[0089] The first fixed member (300) is connected to the left branch of the T-shaped separating explosive, and the second fixed member (200) is connected to the right branch, so that the explosive energy of the explosive is directly transferred to each fixed member (200, 300).

[0090] These fixing members (200, 300) can generally be made of a high-strength metal material (e.g., aluminum alloy, titanium alloy, stainless steel, etc.) and have fastening threads or connecting grooves formed on the outside to maintain mechanical connection with the structure.

[0091] As a result, the fixing member (200, 300) can be firmly mounted to an external structure through the first fastening nut (600) and the second fastening nut (700) described later.

[0092] In particular, a cutting-inducing weakening portion (not shown) may be formed on the interior or one side surface of the first fixing member (300) and the second fixing member (200).

[0093] This weakening part is composed of a groove or perforation formed with a predetermined depth and thickness, and efficiently absorbs the explosive force transmitted from the T-shaped separating explosive (100) to clearly control the point of rupture.

[0094] Therefore, the explosive force of the gunpowder is not randomly dispersed throughout the entire fixed member, but is induced to cause uniform and rapid fracture at the intended cutting plane.

[0095] Additionally, the fixed member (200, 300) can be formed so that fragments do not scatter after cutting when separated from the external structure, and may include a cutting direction or rotation angle control structure inside that induces the fixed member (200, 300) to automatically detach from the structure after the cutting surface is formed.

[0096] In other words, these fixed members (200, 300) serve as receiving and transmitting the explosive force of the T-shaped separating explosive (100), maintain a mechanical connection with the structure to be cut, enable control of the cutting position and stable fracture induction through the weakening part, complete the fixed connection structure together with the fastening nut (600, 700), and have a protective effect on the structure by suppressing residual deformation and fragments after cutting.

[0097] Accordingly, the first fixing member (300) and the second fixing member (200) are positioned corresponding to both ends of the T-shaped separating explosive (100), and by performing a reliable cutting action when the explosive is operated, they can perform an essential function for realizing complete and safe separation of the structure.

[0098] In addition, in the present invention, by arranging fixed members (200, 300) having the same structure symmetrically on the left and right, bidirectional cutting can be stably performed simultaneously during explosion operation using a single ignition device (400).

[0100] Next, the igniter (400) is a basic detonation device that simultaneously induces bidirectional cutting of a structure by operating an internal ignition means according to a single electric signal applied from the outside to generate high-temperature, high-pressure detonation energy and transferring it to a connecting explosive (500) and a T-shaped separating explosive (100).

[0101] The ignition device (400) functions as the sole ignition source of the entire explosive bolt system and acts as a trigger to initiate detonation in response to an electrical signal.

[0102] In this embodiment, by using only one ignition device (400), the complexity of the electrical circuit can be reduced, and the weight, size, and energy consumption can be minimized.

[0103] More specifically, the igniter (400) may include an electric power application terminal, an ignition element (nichrome wire or electric detonator), a detonation chamber, and a heat dissipation or protective outer shell.

[0104] The electric power supply terminal is connected to an external power supply line and is configured as a contact terminal structure that receives a single electric signal (e.g., DC voltage) and supplies current to an internal ignition element.

[0105] An ignition element (nichrome wire or electric detonator) generates heat instantaneously when current flows, heating adjacent ignition explosives or ignition charges to a high temperature to induce a chemical detonation reaction.

[0106] In this embodiment, a material having a fast reaction speed and high thermal output may be applied for reliable ignition.

[0107] In the detonation chamber, thermal energy generated by the operation of the ignition element is transferred to the internal ignition charge (e.g., black powder, ZPP-based powder, etc.) to trigger detonation, thereby generating high-temperature, high-pressure gas.

[0108] This high-temperature, high-pressure gas is transferred to the connecting explosive (500) through an open port on one side of the igniter (400) body.

[0109] The exterior of the ignition device, which has a heat dissipation or protective outer shell, is formed of metal or heat-resistant insulating material and protects the internal ignition structure from external shocks, static electricity, and environmental influences (moisture, dust, etc.).

[0110] The operation sequence of the ignition device (400) is as follows.

[0111] When an electric signal is applied from the outside, current is supplied to the ignition element through the electric application terminal.

[0112] The ignition element instantly generates heat to ignite an adjacent ignition charge, and the explosive reaction of the ignition charge produces high-temperature, high-pressure gas and fragments.

[0113] This detonation energy is transferred to the connecting explosive (500) through the output port of the igniter (400) body, inducing a chain reaction that ignites the T-shaped separating explosive (100).

[0114] In other words, the ignition device (400) of the present invention has the following functional and structural features.

[0115] Looking at immediate operation by a single electrical signal, since all cutting functions are performed with only a single electrical input when executing the dual cutting explosion function, the circuit design and control of the entire system are simplified.

[0116] When looking at the central ignition point directly linked to the T-shaped separating explosive (100), high temperature and high pressure gas reaches the center of the separating explosive directly through the connecting explosive (500), thus ensuring synchronization of the bidirectional cutting operation.

[0117] Regarding the ease of application to existing systems, the double-cut structure of the present invention can easily replace existing single-cut explosion bolts because, compared to conventional technology using multiple ignition sources, the structure is simpler and the burden on the power and ignition control systems is reduced.

[0118] Regarding the potential for miniaturization and weight reduction, since it consists of a single structure, it facilitates miniaturization and modularization while possessing high-energy detonation capabilities, and is suitable for the lightweight requirements demanded by satellites, missiles, and aircraft.

[0119] Accordingly, the igniter (400) is a key component of a double-cutting explosive bolt system that can simultaneously form two cutting surfaces with only a single applied electric signal, and can contribute to simplifying the overall structure and improving operational reliability.

[0121] Next, the connecting explosive (500) efficiently receives and delivers high-temperature, high-pressure gas generated by the operation of the igniter (400), and functions as a chain detonation medium that induces simultaneous bidirectional cutting by rapidly igniting the center of the T-shaped separating explosive (100) using this.

[0122] The connecting explosive (500) has a linear passage structure, one side is connected to the detonation chamber of the ignition device (400), and the other side is configured to be connected to the center of the T-shaped separating explosive (100).

[0123] This structural arrangement is intended to allow the explosive energy generated from the ignition device (400) to reach the center point of the separated explosive along the shortest path with minimal loss.

[0124] In terms of composition, the connecting explosive (500) is filled with a high-sensitivity fuse-shaped explosive with high ignition sensitivity or a traditional detonation-assisting explosive (e.g., Lead Styphnate, RDX, etc.) inside, and the outer shell is formed of a metal tube, a ceramic protective layer, a polymer material, etc., to ensure protection against flames, shocks, static electricity, etc., and transmission stability.

[0125] The operating procedure is as follows.

[0126] When the ignition device (400) is ignited by external electric power, the internal ignition element is activated, causing the detonating ignition charge to explode, and consequently, high-temperature, high-pressure gas or heat waves are released.

[0127] This energy is rapidly transferred along the connecting explosive (500), and the ignition material within the connecting explosive is ignited sequentially to ignite the center of the T-shaped separating explosive (100).

[0128] At this time, the connecting gunpowder (500) performs a function beyond simply being a conduit for transmitting energy.

[0129] Specifically, it has the following functional characteristics.

[0130] That is, regarding the role of the detonation propagation medium, the high temperature and high pressure gas generated when the igniter (400) operates is transmitted to the T-shaped separating explosive (100) to induce chain ignition.

[0131] Looking at explosive force amplification and transmission stabilization, the internal gunpowder acts like a fuse to combust or explode, playing a role in amplifying or stabilizing energy transfer.

[0132] Regarding the guarantee of ignition timing consistency, the ignition characteristics of the connecting explosive (500) are adjusted so that the explosive energy reaches the left and right branches of the T-shaped separating explosive (100) at the same time interval, which is a very important function for ensuring cutting synchronization.

[0133] Looking at the directional transmission, the connecting explosive (500) is based on central ignition, so it has unidirectional or concentrated directional transmission characteristics and can be formed with a structure that blocks diffusion to the outside.

[0134] Regarding modularity and ease of maintenance, the outer shell structure or the connection parts at both ends are standardized, making it easy to mechanically fasten and airtightly connect with the igniter (400) and the T-shaped separating explosive (100), and it can also be implemented as a structure that allows for separation, storage, or replacement before firing.

[0135] In other words, the connecting explosive (500) is an ignition energy transfer channel for chain operation between a single igniter (400) and a T-shaped separating explosive (100), performs a fast and stable ignition action while minimizing energy loss, and plays a key role in ensuring the continuity of operation and the synchronization of cutting.

[0137] Next, the first fastening nut (600) and the second fastening nut (700) are mechanical fastening means for firmly fastening the first fixing member (300) and the second fixing member (200) to a structure, respectively, and are configured to simultaneously ensure structural stability and reliability of the cutting operation of the double cutting explosion bolt (1000) of the present invention.

[0138] Each fastening nut (600, 700) is composed of a metal member having a cap shape or a hexagonal structure having an internal hole with threads formed therein, and is fastened by screw coupling or a snap-fit ​​method with the threads or coupling protrusions formed on the outer circumference of the corresponding first fixing member (300) and second fixing member (200).

[0139] This structural connection not only fixes each fixed member (200, 300) but also contributes to ensuring consistency and safety in the formation of the cut surface by maintaining the fracture direction and stress distribution of each fixed member (200, 300) constant during the cutting operation.

[0140] More specifically, the configuration and function of the first fastening nut (600) and the second fastening nut (700) are as follows.

[0141] Looking at the role of fixing the structure and mechanically supporting it, each fastening nut (600, 700) strongly fixes the corresponding fixing member (200, 300) to the structure or external configuration, thereby ensuring that the entire structure remains rigid against external loads or vibrations in a normal operating state.

[0142] When looking at the structure maintenance for inducing a cutting reaction, when the explosion of the T-shaped separating explosive (100) reaches each fixed member (200, 300), in order for cutting to occur centered on the weakened area of ​​each fixed member (200, 300), the member must be fixed in the correct position.

[0143] Each fastening nut (600, 700) maintains this stably to induce fracture in the predicted cutting direction.

[0144] [This text appears to be a separate, unrelated sentence and likely an advertisement.]

[0145] Regarding the possibility of designing for inducing detachment or preventing detachment, in other embodiments, it is possible to form two opposite forms such that after the cutting operation, each fastening nut (600, 700) is automatically separated to achieve complete separation between the structure and each fixing member (200, 300), or conversely, to prevent detachment in order to support the remaining parts.

[0146] Regarding the diversity of materials and shapes, each fastening nut (600, 700) can be formed from various materials such as aluminum alloy, stainless steel, carbon steel, and heat-resistant alloy, and if necessary, vibration resistance, impact resistance, and airtightness can be improved by including anti-vibration pads, rock washers, adhesive coating parts, etc.

[0147] Accordingly, the first fastening nut (600) and the second fastening nut (700) are structural fixing devices that stably connect each fixing member (200, 300) to an external structure and simultaneously maintain a fixed state accurately at the time of cutting operation, thereby enabling the double cutting function according to the present embodiment to be performed quickly and accurately.

[0148] Each of these fastening nuts (600, 700) is structurally simple yet plays a very important role within the explosion operating system, so the overall safety, reliability, and ease of installation of the present invention can be enhanced.

[0150] In other words, the double cutting explosive bolt (1000) according to one embodiment of the present invention is a redundant explosive separation system configured to perform a cutting function in both directions simultaneously according to the electric ignition operation of a single igniter (400), and can be usefully applied in high-reliability environments such as aerospace, defense industry, and escape systems that require rapid and reliable separation of structures.

[0151] The double cutting explosive bolt (1000) is composed of a T-shaped separating explosive (100), a first fixing member (300), a second fixing member (200), an igniter (400), a connecting explosive (500), a first fastening nut (600), and a second fastening nut (700).

[0152] Each component is organically combined through structural connectivity and functional interaction so that bilateral severance can be performed simultaneously with only a single ignition signal.

[0153] Looking at the ignition device (400), the activation point of the double cutting explosion bolt (1000) starts from the ignition device (400).

[0154] The igniter (400) receives a single electric signal from the outside and immediately induces a detonation reaction through an internal ignition element (e.g., a nichrome wire or an electric detonator).

[0155] During this process, high-temperature, high-pressure working gas and thermal energy are generated and transferred to the connecting explosive (500) through the output port of the igniter (400) body.

[0156] Looking at the connecting explosive (500), the connecting explosive (500) positioned between the ignition device (400) and the center of the T-shaped separating explosive (100) functions as a detonation energy transfer passage.

[0157] The connecting explosive (500) performs rapid combustion or explosion propagation through the fuse-shaped explosive filled inside, thereby rapidly and stably igniting the center of the T-shaped separating explosive (100).

[0158] In addition, the connecting explosive (500) controls the operation timing and energy transfer path, playing a key role in ensuring the synchronization and uniformity of the left and right cuts.

[0159] Looking at the T-shaped separating explosive (100), the T-shaped separating explosive (100), which is initiated to explode in the center upon ignition of the connecting explosive (500), has a structure that is symmetrically branched to the left and right, and is filled with high-energy separating explosive inside.

[0160] The explosion propagates uniformly from the center in both directions without a time difference, reaching the first fixed member (300) and the second fixed member (200) respectively to perform a cutting action.

[0161] Unlike conventional technology using multiple ignition sources, this branched structure provides a high-efficiency structure capable of cutting both sides with only a single ignition source.

[0162] Looking at the first fixing member (300) and the second fixing member (200), the first fixing member (300) and the second fixing member (200) are respectively attached to both ends of the T-shaped separating explosive (100).

[0163] These fixed members (200, 300) are directly connected to the structure to be cut and include a cutting-inducing weakening part to be broken by explosive force.

[0164] As the explosive force of the T-shaped separating explosive (100) accurately reaches the weakened area of ​​the fixed member (200, 300), fracture is induced along the planned cutting plane, thereby maximizing the separation reliability of the structure.

[0165] Looking at the first fastening nut (600) and the second fastening nut (700), each fixing member (200, 300) is mechanically fixed to a structure or external configuration through the corresponding first fastening nut (600) and second fastening nut (700).

[0166] The fastening nut (600, 700) accurately maintains the cutting position of the fixed member (200, 300) and evenly distributes the explosive stress generated during operation to the structure, thereby performing the functions of controlling the cutting position and preventing fragment scattering.

[0167] In addition, in certain embodiments, the fastening nut (600, 700) is formed to automatically detach after cutting, so that complete separation of the structure may be easily achieved.

[0168] The double cutting explosive bolt (1000) has the following functional flow with each of the above-described components linked together.

[0169] The igniter (400) is ignited by a single electric signal, the connecting explosive (500) is ignited at the center of the separating explosive through high temperature and high pressure gas, the T-shaped separating explosive (100) undergoes a uniform explosion in both directions, the fixing member (200, 300) is broken along the weakening section, and the fastening nut (600, 700) induces the fixing of the cutting position and separation.

[0170] As a result, the double-cutting explosive bolt (1000) according to the present embodiment simultaneously implements multiple cuts even with a simple structure using a single igniter, thereby realizing various technical effects such as a reduction in the number of parts, circuit simplification, improved operational reliability, and weight reduction compared to existing systems.

[0171] This structure is highly suitable for fields requiring high reliability and high-speed separation capabilities, such as satellite fairing separation, aircraft emergency separation, and missile payload separation, and can also be usefully applied as a replacement technology for existing single-cut bolts.

[0173] FIGS. 2 to 4 are drawings illustrating the assembly procedure of a double-cutting explosive bolt using a single ignition device and the method of operation thereof according to an embodiment of the present invention.

[0174] Referring to FIG. 2, it shows the state in which a double-cut explosive bolt (1000) is inserted inside the basic structure.

[0175] First, the left structure and the right structure are aligned while maintaining a predetermined fastening direction, and a T-shaped separating explosive (100), a first fixing member (300), and a second fixing member (200) are arranged integrally in the central area between them.

[0176] This state is the normal state before cutting the explosive bolt, and the outer side of the fixing member (200, 300) is aligned to be in close contact with the structure to be cut, and the cutting guide groove or weakening part is set to accurately correspond to the fracture location of the structure to be cut.

[0177] Referring to FIG. 3, the process of mechanically fastening a fixing member (200, 300) to a structure using a fastening member (600, 700) is shown.

[0178] The first fastening nut (600) and the second fastening nut (700) are each fastened to the threaded portion formed on the outer circumference of the first fixing member (300) and the second fixing member (200).

[0179] Thus, the fixing member (200, 300) is accurately and firmly fixed to the structure, and the explosive bolt (1000) is positioned to penetrate between both sides of the structure.

[0180] In addition to firmly supporting the fixed member (200, 300), the fastening nut (600, 700) also performs the function of preventing the fixed member (200, 300) from abnormally detaching or moving slightly due to vibration during an explosion.

[0181] The completion of this stage means that the cutting preparation is complete, and the final ignition system including the igniter (400) is then ready to be installed.

[0182] Referring to FIG. 4, the final assembly is completed by mounting the ignition device (400) so as to be in communication with the connecting gunpowder (500).

[0183] At this stage, the ignition device (400) is connected in a straight line with the connecting explosive (500) connected to the center of the T-shaped separating explosive (100) and is hermetically mounted to the fixed part.

[0184] The ignition device (400) is positioned with the electrical application terminal exposed to the outside so that it can receive an ignition signal from an external power source, and if necessary, a dustproof or insulating connector may be additionally attached to the top.

[0185] When this stage is completed, the double cutting explosive bolt (1000) reaches a fully operational state, and when the igniter (400) is ignited by an external electric signal, high-temperature high-pressure gas is delivered to the T-shaped separating explosive (100) through the connecting explosive (500), and the two fixing members (200, 300) are cut simultaneously, and the structure is dismantled.

[0186] This assembly procedure is essential for ensuring the precise cutting operation and structural safety of the entire explosion system, and its modular design offers excellent ease of production, maintenance, and installation.

[0188] FIGS. 5 to 8 are drawings illustrating the double cutting bolt operation procedure in the double cutting explosive bolt using a single ignition device and the method of operation thereof according to an embodiment of the present invention.

[0189] Looking at Fig. 5, the moment when the igniter (400) operates as an electric signal is applied from the outside can be observed as an operating stage of the igniter (400).

[0190] In this stage, a single electric signal is applied through a power supply line to an ignition element (e.g., a nichrome wire or an electric detonator) of the ignition device (400), and the ignition element generates a high temperature to detonate an adjacent ignition charge.

[0191] This generates a high-temperature, high-pressure working gas, which is discharged through the discharge port of the igniter (400) toward the connecting explosive (500).

[0192] Looking at FIG. 6, it can be seen that the ignition step of the connecting gunpowder (500) involves a high-temperature, high-pressure gas generated by the operation of the igniter (400) igniting the connecting gunpowder (500).

[0193] High temperature and high pressure gas sequentially ignites the fuse-shaped explosives inside the connecting explosive (500), and energy propagates rapidly.

[0194] This process is a transfer process to accurately deliver ignition energy to the center of the T-shaped separating explosive (100) via the connecting explosive (500), thereby ensuring the stability of explosion propagation and synchronization of cutting timing.

[0195] Looking at Fig. 7, it can be seen that the T-shaped separating explosive (100) operates in a stage of operation in which the T-shaped separating explosive (100) explodes upon ignition of the connecting explosive (500).

[0196] The T-shaped separating explosive (100) is ignited at the center, and the separating explosive filled inside propagates symmetrically in both left and right directions, causing simultaneous explosions along each branch.

[0197] This explosive energy is transferred to the first fixed member (300) and the second fixed member (200) located at the end of each branch, and induces an accurate cutting action along the cutting-inducing weakening portion formed within the fixed members (200, 300).

[0198] At this time, the propagation characteristics of the T-shaped structure ensure bidirectional cutting without a time difference, and allow the fixed member (200, 300) to be stably separated from the structure.

[0199] Looking at FIG. 8, in the cutting surface separation step, the first fixing member (300) and the second fixing member (200) are broken by the explosion of both sides of the T-shaped separating explosive (100), and the structure is separated.

[0200] Two cut surfaces formed by the explosion occur along the weakened portions of each fixed member (200, 300), thereby completely separating the structure into left and right sides.

[0201] At this stage, the first fastening nut (600) and the second fastening nut (700) may be formed to detach together with the cut fixing member (200, 300) or the fixing member (200, 300) may be formed to automatically separate from the main body.

[0202] As a result, the entire structure is safely and quickly separated at once by a single ignition device (400), which provides advantages such as circuit simplification, weight reduction, and improved operational reliability compared to conventional multiple ignition device structures.

[0203] Accordingly, the operation procedure of the double cutting explosive bolt (1000) is that when the igniter (400) is activated, the connecting explosive (500) is ignited, both directions of the T-shaped separating explosive (100) explode, and the first fixing member (300) and the second fixing member (200) are cut, and the structure is separated.

[0204] This operating mechanism is based on a single ignition device (400) to realize simpler and more reliable separation operation, and can be applied to fields requiring high-speed, high-precision separation technology, such as space launch vehicle separation systems, satellite fairing dismantling, and aircraft emergency separation mechanisms.

[0206] FIGS. 9 and 10 are drawings showing the fastening and separation states of a double-cutting explosive bolt through double voltage input in a double-cutting explosive bolt using a single ignition device according to an embodiment of the present invention.

[0207] FIG. 9 illustrates an explosive bolt including a dual ignition device mounted on a structure, with the ignition device (left) and the ignition device (right) independently positioned on the left and right sides, respectively.

[0208] The main body of the double-action explosive bolt is positioned in the center, and on both sides, a first fastening nut (left) and a second fastening nut (right) secure the fixing member (left) and the fixing member (right), respectively, to the structure.

[0209] Each fastening nut is fastened to a corresponding fixing member by screwing or snapping, maintaining the integrity of the structure.

[0210] In particular, this embodiment is designed to allow independent electrical signals to be applied through both igniters, and the user can selectively operate only the left igniter, operate the right igniter, or operate both igniters simultaneously to perform bidirectional cutting.

[0211] By ensuring operational flexibility in this way, it is implemented as a structure capable of responding to various separation scenarios.

[0212] In addition, the centrally located dual explosive bolt body contains left and right branching explosive charges inside, and the branching sections in the corresponding directions operate independently upon the operation of each ignition device.

[0213] This allows the user to implement a selective cutting function or a redundant safety cutting function.

[0214] FIG. 10 shows a state in which the structure is separated after explosive cutting is performed following the activation of one of the left and right ignitioners or both ignitioners in the fastening state shown in FIG. 9.

[0215] In this state, the internal explosive of the double-acting explosive bolt is activated, inducing fracture along the cut weakening sections of each fixed member in the left and right directions.

[0216] When the cutting is performed, the fixed members (left) and (right) of the structure are separated from each other, and the explosive bolt located between them is broken down into severed pieces of the duplicated explosive bolt.

[0217] At this time, the fastening nuts (left and right) also detach along with the fixing member or switch to an unconstrained state, releasing the mechanical connection of the entire system.

[0218] This embodiment provides a redundancy structure to prepare for operation failure, as cutting is possible through the operation of another igniter even if one igniter does not operate.

[0219] Therefore, it can be very usefully applied in fields where cutting failure can lead to fatal consequences, such as spacecraft, satellite fairings, and launch vehicle separation systems.

[0220] In other words, FIG. 9 illustrates a state in which the structure is fastened with the ignition devices (left and right) independently arranged, and FIG. 10 illustrates a state in which at least one ignition device is activated, the two fixing members are cut, and the structure is separated.

[0221] The dual voltage input method is another embodiment of the present invention, and provides high operational reliability and flexibility compared to the single electric application method, and can have a functional advantage over conventional single-operation explosive bolts in terms of providing multiple operation options and dual cutting opportunities.

[0223] FIG. 11 is a flowchart showing the overall flow of the operation method of a double-cutting explosive bolt using a single ignition device according to an embodiment of the present invention.

[0224] A double-cutting explosive bolt (1000) using a single ignition device according to another embodiment of the present invention described above can be operated by the method of operating a double-cutting explosive bolt using a single ignition device according to an embodiment of the present invention described below.

[0225] Referring to FIG. 11, a method of operating a double-cutting explosive bolt using a single ignition device according to another embodiment of the present invention comprises four steps.

[0226] That is, the method of operation of a double-cutting explosive bolt (1000) using a single ignition device according to one embodiment of the present invention is configured according to a chain ignition mechanism for simultaneously cutting both sides of a structure, and is distinguished from existing technology in that, in particular, it is designed so that two cutting surfaces are formed simultaneously or without a time difference by a single electric application signal.

[0227] In the first step (S100), an electric signal is applied to a single igniter (400) to activate the detonation means inside the igniter (400).

[0228] In the first step (S100), ignition current is supplied to the igniter (400) through a single power supply line.

[0229] In the first step (S100), the ignition can be achieved through an ignition part configured by a nichrome wire or a friction ignition method.

[0230] That is, in the first step (S100), an electric signal is applied to a single igniter (400) through an external power supply line.

[0231] The ignition device (400) includes an ignition element such as a nichrome wire or an electric detonator inside, and as current flows, the ignition element generates a high temperature to immediately ignite an adjacent ignition charge or explosive charge.

[0232] Thus, high-temperature, high-pressure detonating gas is generated inside the ignition device (400), and this is continuously transferred to the connecting explosive in the subsequent stage.

[0233] The first stage (S100) is carried out within a very short period of time and is configured to enable precise timing control in the launch vehicle or satellite separation system, etc.

[0234] In the second stage (S200), the high temperature and high pressure gas generated from the igniter (400) is transferred through the connecting gunpowder (500) to ignite it.

[0235] In the second stage (S200), the detonation energy of the igniter (400) is transferred along a straight conduit to the center of the T-shaped separating explosive (100).

[0236] That is, in the second stage (S200), the high temperature, high pressure gas generated in the ignition device (400) is delivered along the straight connecting explosive (500).

[0237] The connecting explosive (500) has a linear fuse structure and is connected to the main body of the T-shaped separating explosive (100) at the center, stably transferring energy to that location without loss.

[0238] In this process, the high-sensitivity explosive filled inside the connecting explosive (500) is rapidly ignited, and the energy reaches the central ignition point of the T-shaped separating explosive (100) and acts as a switching trigger to induce bidirectional branching operation.

[0239] In the third stage (S300), explosive energy is transferred to both directions of the connected T-shaped separating explosive (100) through the ignition of the connecting explosive (500).

[0240] In the third stage (S300), explosions are induced uniformly within the branched explosives on both sides, either simultaneously or without a time difference.

[0241] That is, in the third stage (S300), the T-shaped separating explosive (100) ignited by the connecting explosive (500) performs a simultaneous explosion along the explosive passages branched to the left and right from the center.

[0242] At this time, the separating explosive (500) is uniformly filled within both branch sections, and a symmetrical design is applied so that there is no time difference in operating speed and explosion pressure.

[0243] Accordingly, an equal explosive force is transmitted in both directions, and the explosive shock spreads to the first fixed member (300) and the second fixed member (200), respectively.

[0244] This ensures that the entire structure can be cut simultaneously in both directions at the precise timing.

[0245] In the fourth step (S400), the first cutting surface and the second cutting surface are simultaneously formed by the explosion of both sides of the T-shaped separating explosive (100), thereby performing the separation of the structure to be cut.

[0246] In the fourth step (S400), fracture is induced along the cutting weakening areas of each of the first fixing member (300) and the second fixing member (200) placed at both ends of the T-shaped separating explosive (100).

[0247] In step 4 (S400), the first fastening member (600) and the second fastening member (700), which are configured to be independent from the main body to which the cut first fixing member (300) and the second fixing member (200) are connected and detached to the outside, are released.

[0248] In the fourth step (S400), the operation of the first cutting surface and the second cutting surface can be monitored through a detection sensor (not shown) and the completion of the cutting can be determined.

[0249] That is, in the fourth step (S400), the explosion of both sides of the T-shaped separating explosive (100) induces a fracture along the cutting-inducing weakening section formed in the corresponding fixed member (200, 300).

[0250] Thus, a first cutting plane and a second cutting plane are formed on both the left and right sides, respectively, and the structure is separated quickly and accurately based on the center.

[0251] In the fourth step (S400), the first fastening nut (600) and the second fastening nut (700) fastened to the outside of the fixed member (200, 300) are detached together with the cut fixed member (200, 300), or the connection with the structure is released, thereby realizing complete structural separation.

[0252] In certain embodiments, a sensor module for detecting whether cutting has occurred is included, configured to monitor the operation of each cutting surface in real time and transmit the success or failure of the cutting to a control system.

[0253] This allows safety auxiliary devices or alternative means to be activated in the event of problems such as explosion failure or incomplete cutting.

[0254] Therefore, since this method enables double cutting with only a single electrical application, it has the effect of eliminating the need for complex circuits, reducing weight, and improving operational reliability.

[0255] Technical advantages such as uniform propagation of explosive force, synchronized cutting action, minimization of residual stress in structures, and suppression of explosive fragments are secured.

[0256] Additionally, through the configuration of a nichrome wire or friction-ignition type igniter, modularization of the cutting confirmation sensor, and an automatic release structure of the fastening nut, it is possible to provide advanced cutting capabilities suitable for environments requiring high reliability (e.g., satellite separation, aircraft emergency escape, combat vehicle separation, etc.).

[0258] As such, according to the present invention, two cutting surfaces can be created with only a single ignition and a single electric inlet, thereby significantly improving the cutting reliability of the explosive bolt, and accordingly, the risk of cutting failure or inability to separate that may occur in a conventional single cutting structure can be substantially eliminated.

[0259] In addition, according to the present invention, since the structure uses only one ignition device, the circuit design is simpler compared to the conventional double-cutting method using multiple ignition devices, and the problems of complexity and weight increase in the power supply system can be simultaneously solved, thereby contributing to the miniaturization, lightweighting, and design simplification of the system.

[0260] In addition, according to the present invention, by applying a T-shaped separating explosive, a structure can be realized in which the explosive energy generated from a single ignition device is simultaneously transmitted in the left and right directions and leads to each cutting surface, thereby ensuring simultaneity and uniformity of the cutting action, and consequently, the effect of enabling balanced separation of the structure or stable release operation is achieved.

[0261] In addition, according to the present invention, since high compatibility is maintained with conventional single-cut explosive bolt systems, it can be applied to existing systems without major structural changes, and has the effect of being effectively applied to high-reliability fields, particularly in aerospace, defense industries, or emergency separation systems for machinery.

[0262] Furthermore, according to the present invention, it provides excellent effects in various aspects such as operational reliability, design efficiency, ease of manufacturing, convenience of installation, and system integration, and has high commercial and technical utility value in technical fields requiring high-reliability separation mechanisms.

[0264] Although various preferred embodiments of the present invention have been described above with some examples, the descriptions of various embodiments described in the "Specific details for carrying out the invention" section are merely illustrative, and those skilled in the art to which the present invention pertains will understand that the present invention can be modified in various ways or equivalent embodiments can be carried out based on the above description.

[0265] Furthermore, since the present invention can be implemented in various other forms, the present invention is not limited by the description above. The above description is provided merely to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the present invention, and it should be understood that the present invention is defined only by each claim of the claims. Explanation of the symbols

[0267] 100 : T-shaped separating powder 200: First fixing member 300 : Second fixing member 400 : Ignition device 500 : Connecting gunpowder 600: First fastening nut 700 : Second fastening nut 1000: Double-cutting explosive bolt using a single ignition source

Claims

Claim 1 An igniter ignited by a single electric application; a connecting explosive connected to the igniter and ignited by high-temperature, high-pressure gas; a T-shaped separating explosive communicating with the connecting explosive and branching in both directions to perform independent cutting actions; a first fixing member and a second fixing member each coupled to both ends of the T-shaped separating explosive to fix a structure to be cut; A double-cutting explosive bolt using a single ignition device, comprising: a first fastening member and a second fastening member for fastening and fixing the first fixing member and the second fixing member to a structure; wherein, upon a single ignition operation of the ignition device, the T-shaped separating explosive is detonated in both left and right directions, so that the first fixing member and the second fixing member each form independent cutting surfaces to separate the structure; wherein the connecting explosive has a straight structure and communicates between the ignition device and the T-shaped separating explosive; wherein both ends of the T-shaped separating explosive are each placed at different parts of the structure to be cut, thereby simultaneously performing bidirectional cutting of the structure; and wherein the internal explosive filling of the T-shaped separating explosive is formed to have uniform density and ignition sensitivity characteristics in the left and right directions. Claim 2 delete Claim 3 A double-cutting explosive bolt using a single ignition device according to claim 1, wherein the ignition device includes an electric ignition element and is characterized by the fact that current is applied from a single power supply line to ignite the internal explosive. Claim 4 delete Claim 5 A double-cutting explosive bolt using a single ignition device, wherein, in claim 1, the T-shaped separating explosive is characterized by having explosives filled inside tubular passages that branch symmetrically from the center to both sides. Claim 6 A double-cutting explosive bolt using a single ignition device, wherein, in claim 1, the first fixing member and the second fixing member are coupled to a structure to be cut and include a weakening member for inducing a fracture area upon explosive operation. Claim 7 A double cutting explosive bolt using a single ignition device, wherein, in claim 1, the first fastening member and the second fastening member are formed in a bolt-nut or screw fastening manner to fix the first fixing member and the second fixing member, respectively, to a structure or external configuration. Claim 8 A double-cutting explosive bolt using a single ignition device, characterized in that, in claim 1, the explosion propagation characteristics of the T-shaped separating explosive are formed to operate uniformly in both directions without a time difference to prevent total cutting failure in the event of ignition failure. Claim 9 delete Claim 10 A first step of applying an electric signal to a single ignition device to activate a detonation means inside the ignition device; a second step of transmitting high-temperature, high-pressure gas generated in the ignition device through a connecting explosive to ignite it; and a third step of transmitting explosive energy to both directions of a connected T-shaped separating explosive through the ignition of the connecting explosive. A method for operating a double-cutting explosive bolt using a single ignition device, comprising: a fourth step of simultaneously forming a first cutting surface and a second cutting surface through the explosion of both sides of the T-shaped separating explosive; wherein the T-shaped separating explosive is detonated in both left and right directions according to a single ignition operation of the ignition device, and the first fixing member and the second fixing member, respectively coupled to both ends of the T-shaped separating explosive, each form independent cutting surfaces to separate the structure; wherein the connecting explosive has a straight structure and communicates between the ignition device and the T-shaped separating explosive, and the two ends of the T-shaped separating explosive are respectively placed at different parts of the structure to be cut to simultaneously perform bidirectional cutting of the structure, and wherein the internal explosive filling of the T-shaped separating explosive is formed to have uniform density and ignition sensitivity characteristics in the left and right directions. Claim 11 A method of operating a double-cut explosive bolt using a single ignition device, wherein, in claim 10, the first step is characterized by supplying an ignition current to the ignition device through a single power supply line. Claim 12 In claim 10, the second step is characterized by transferring the detonation energy of the igniter to the center of the T-shaped separating explosive along a straight conduit, a method of operating a double-cutting explosive bolt using a single igniter. Claim 13 A method of operating a double-cutting explosive bolt using a single ignition device, wherein the third step is characterized by inducing an explosion uniformly within the branched explosives on both sides, either simultaneously or without a time difference. Claim 14 A method of operating a double-cutting explosive bolt using a single ignition device, wherein, in claim 10, the fourth step is characterized by inducing fracture along the cutting weakening zones of each of the first fixed member and the second fixed member disposed at both ends of the T-shaped separating explosive. Claim 15 A method of operating a double-cut explosive bolt using a single ignition device, wherein, in the fourth step, the first fastening member and the second fastening member configured to be detached from the main body to which the cut first fixing member and the second fixing member are connected are released. Claim 16 A method of operating a double-cut explosive bolt using a single ignition device, wherein, in claim 10, the first step is performed through an ignition part configured by a nichrome wire or a friction ignition method. Claim 17 A method for operating a double-cutting explosive bolt using a single ignition device, wherein, in claim 10, the fourth step is characterized by monitoring whether the first cutting surface and the second cutting surface are operating through a detection sensor and determining whether the cutting is completed. Claim 18 A double-cutting explosive bolt using a single ignition device, characterized by operating by a method of operating a double-cutting explosive bolt using a single ignition device according to any one of claims 10 to 17.

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