Dual-structure fire extinguishing ball

Abstract

The present invention relates to a double-structured fire extinguishing grenade comprising: a housing having a centrally positioned bulkhead shaft with slide holes formed along the longitudinal direction on both sides; and fire extinguishing parts each positioned on both sides of the bulkhead shaft, with slide protrusions formed to slide along the slide holes formed on the bulkhead shaft. With this configuration, a double structure is formed in which fire extinguishing parts are respectively coupled to both sides of the bulkhead shaft, thereby enabling continuous fire extinguishing using the same fire extinguishing material or allowing for more effective response depending on the type and situation of the fire by selectively using different types of fire extinguishing materials.

Description

Technology Field

[0001] The present invention relates to a double-structured fire extinguishing projectile, and more specifically, to a double-structured fire extinguishing projectile used to extinguish a fire by throwing it at a flame area when a fire occurs. Background Technology

[0003] In general, various fire extinguishing devices, such as fire extinguishers and sprinklers, are used to rapidly suppress fires when they occur. However, these devices have limitations in installation locations or complex usage methods, making it difficult for ordinary users to respond immediately in emergency situations.

[0004] Accordingly, fire extinguishing bombs that can be extinguished by throwing them directly at the flames when a fire occurs have recently been proposed. These fire extinguishing bombs are formed with a fire extinguishing substance contained inside, and when a user throws them at the point of fire, the outer shell is damaged by impact or heat, releasing the fire extinguishing substance to suppress the flames.

[0005] However, conventional fire extinguishing grenades are generally formed with a single structure and contain only one type of extinguishing agent, which limits their ability to provide sufficient extinguishing performance depending on the type of fire. For example, despite the fact that the appropriate extinguishing agents differ for various fire types such as general fires, oil fires, and electrical fires, it is difficult to effectively respond to all fire situations using a single type of extinguishing grenade.

[0006] In addition, conventional fire extinguishing grenades must be thrown individually one by one when in use, so in cases where the fire is large or spreads rapidly, there is the inconvenience of having to repeatedly take out and throw the grenades, and there is a problem that initial response may be delayed during this process. Prior art literature

[0008] Korean Intellectual Property Office Registration No. 10-2946869 (March 27, 2026) Korean Intellectual Property Office Registration No. 10-1263166 (May 6, 2013) Korean Intellectual Property Office Registration No. 10-2222688 (February 25, 2021) Korean Intellectual Property Office Registration No. 10-2800639 (April 22, 2025) The problem to be solved

[0009] The present invention was devised to solve the aforementioned problems and aims to provide a fire extinguishing projectile that can be easily grasped and quickly thrown by a user in the event of a fire, while also improving safety by preventing the extinguishing part from unintentionally separating during use or movement.

[0010] In addition, another objective is to provide a fire extinguishing bomb that can flexibly respond to various fire environments by allowing the selective use of appropriate fire extinguishing materials depending on the type and situation of the fire. means of solving the problem

[0012] To achieve the above objectives, a double-structured fire extinguishing projectile according to a preferred embodiment of the present invention comprises: a housing having a bulkhead shaft positioned in the center, the bulkhead shaft having slide holes formed along the longitudinal direction on both sides; and a fire extinguishing part positioned on each side of the bulkhead shaft, each having a slide projection formed to slide along the slide holes formed on the bulkhead shaft.

[0013] In addition, the above-mentioned digestion unit is characterized by being configured to include the same type of digestion material on both sides or different types of digestion materials.

[0014] Additionally, it further includes a first interruption means comprising a coupling groove formed on the inner wall of the slide hole and a locking piece that is coupled to the slide projection and is pulled out by elasticity and fixed by being caught in the coupling groove, thereby fixing the fire extinguishing part.

[0015] Additionally, it further includes a second interlocking means comprising: an interlocking cam portion formed to protrude in both directions and coupled to the pivot axis of a handle rotatably coupled to the end of the bulkhead shaft; and locking pins disposed on both sides of the interlocking cam portion, which move outward according to the rotation of the interlocking cam portion and are inserted into locking holes formed in each fire extinguisher portion.

[0016] In addition, each of the above locking pins is elastically supported and is characterized by being inserted into or removed from the locking hole according to the rotation of the handle. Effects of the invention

[0018] According to the double-structure fire extinguishing bomb of the present invention, since it is formed as a double structure in which fire extinguishing sections are respectively coupled to both sides of the bulkhead axis, it is possible to perform continuous fire extinguishing using the same fire extinguishing material, or to respond more effectively depending on the type and situation of the fire by selectively using different types of fire extinguishing materials.

[0019] In addition, since the fire extinguishing unit has a structure in which it slides along the slide hole, the mounting and detachment of the fire extinguishing unit are easy, which has the effect of improving user convenience of operation.

[0020] In addition, since a first locking means is provided that engages by elasticity, the fire extinguisher is stably fixed during storage or transport, while being able to be quickly separated when an external force exceeding a certain level is applied, thereby ensuring both ease of use and rapid response capabilities simultaneously.

[0021] In addition, since a second control means is additionally provided that operates a locking pin in conjunction with the rotation of the handle, it is possible to prevent the extinguishing part from unintentionally separating while the user is gripping the extinguishing bomb or preparing to throw it, thereby improving safety.

[0022] In addition, when the handle is laid flat, the overall volume is minimized to facilitate storage and portability, and when the handle is upright, it is configured to be easy to grip while simultaneously being additionally secured by a second locking means, thereby providing the effect of simultaneously ensuring storage convenience and stability during use.

[0023] In addition, since a grip portion is formed on the outer side of the extinguishing unit, the user can stably grip the extinguishing projectile even without using a handle, which has the effect of improving operability in various usage situations. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view of a double-structure fire extinguishing bullet according to a preferred embodiment of the present invention. FIG. 2 is a plan view of a double-structure fire extinguishing bullet according to a preferred embodiment of the present invention. FIG. 3 is an enlarged view of the first interruption means according to a preferred embodiment of the present invention. FIG. 4 is an enlarged view of a second interruption means according to a preferred embodiment of the present invention. FIG. 5 is an operation diagram of a second interruption means according to a preferred embodiment of the present invention. Specific details for implementing the invention

[0026] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings.

[0027] However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0028] Hereinafter, the present invention will be described with reference to the drawings for explaining a double-structured fire extinguishing projectile according to embodiments of the present invention.

[0029] FIG. 1 is a perspective view of a double-structure fire extinguishing bomb according to a preferred embodiment of the present invention, FIG. 2 is a plan view of a double-structure fire extinguishing bomb according to a preferred embodiment of the present invention, FIG. 3 is an enlarged view of a first control means according to a preferred embodiment of the present invention, FIG. 4 is an enlarged view of a second control means according to a preferred embodiment of the present invention, and FIG. 5 is an operation diagram of a second control means according to a preferred embodiment of the present invention.

[0030] Referring to these drawings, the double-structure fire extinguishing projectile according to the present embodiment has a structure in which fire extinguishing parts are slidably coupled to both sides of the housing, and is characterized by being able to simultaneously ensure stability during storage and speed during use through a stepwise intermittent means.

[0031] A double-structured fire extinguishing bullet (100) according to the present embodiment capable of providing such effects comprises a housing (110), a bulkhead shaft (111) disposed inside the housing (110), slide holes (112) formed on both sides of the bulkhead shaft (111), a fire extinguishing part (120) that slides and is slidably coupled to the bulkhead shaft (111) with a slide projection (122) formed to correspond to the slide holes (112), a first control means (130) for primarily fixing the fire extinguishing part (120), and a second control means (140) for secondarily fixing the fire extinguishing part (120) in conjunction with the rotation of a handle (114).

[0033] The housing (110) can generally be formed in a bar shape extending along the longitudinal direction, or in a cylindrical or polygonal prism shape, and a space is formed inside in which the bulkhead axis (111) can be arranged along the center. The bulkhead axis (111) can be formed integrally inside the housing (110) or manufactured as a separate member and coupled to the housing (110), thereby allowing for various manufacturing methods and assembly capabilities.

[0034] On both sides of the housing (110), a coupling area to which the fire extinguisher (120) is coupled may be formed. This coupling area may be opened to communicate with a slide hole (112) formed in the bulkhead shaft (111), so that the fire extinguisher (120) can be slid and inserted from above to below. At this time, the housing (110) may have a structure that serves as a guide to guide the insertion direction of the fire extinguisher (120) and simultaneously supports the fire extinguisher (120) so that it does not protrude excessively to the outside when coupled.

[0035] Additionally, a gripping surface may be formed on the outer side of the housing (110) to facilitate the user's grip. The gripping surface may be formed flat, but may have irregularities, grooves, or anti-slip patterns for a more stable grip, and may also be provided with a coating layer of rubber or elastic material as needed. Through this, the user can stably grip the fire extinguishing bomb (100) and throw it quickly even in emergency situations such as a fire.

[0036] A handle (114) may be attached to the end of the bulkhead shaft (111) of the housing (110), and the handle (114) may be formed to be rotatable around a pivot shaft (114a). An interlocking cam portion (114b) may be axially coupled to the pivot shaft (114a) of the handle (114), and the interlocking cam portion (114b) may be formed to protrude in both directions around the pivot shaft (114a). Accordingly, when the handle (114) rotates clockwise or counterclockwise, the interlocking cam part (114b) rotates together with the rotation axis (114a), and one side projection of the interlocking cam part (114b) pushes the locking pin (141) positioned on one side of the partition axis (111) outward, and the other side projection of the interlocking cam part (114b) pushes the locking pin (141) positioned on the other side of the partition axis (111) outward. In this way, the interlocking cam part (114b) coupled to one rotation axis (114a) acts on each locking pin (141), thereby enabling a secondary interlocking operation for both fire extinguishing parts (120) to be performed in conjunction.

[0037] A shaft hole or bearing structure may be formed in the above bulkhead shaft (111) so that the pivot shaft (114a) of the handle (114) can be rotatably supported, and accordingly, the handle (114) can be coupled to the housing (110) so as to be rotatable at a certain angle. The handle (114) can be laid flat so as to be in close contact with the outer surface of the housing (110) when stored, and can be rotated upward when in use so as to be switched to a state where it is easy for the user's hand to grip.

[0038] The above housing (110) can be formed from various materials such as metal, synthetic resin, or composite material, and in order to simultaneously ensure lightness and durability, the interior can be formed as a hollow structure or designed with a structure having reinforcing ribs. In particular, considering portability, aluminum alloy, engineering plastic, or reinforced plastic may be applied, and it can be formed to have an appropriate thickness and strength to prevent damage caused by external impact.

[0039] Additionally, the housing (110) may be formed with a detachable structure for maintenance or replacement of internal components as needed. For example, the housing (110) may be formed with a case structure that can be separated vertically or horizontally, so that the internal bulkhead shaft (111), first interruption means (130), second interruption means (140), etc., can be easily assembled or replaced.

[0041] An internal space (121) containing a fire extinguishing substance may be formed inside the fire extinguishing unit (120). Various forms of fire extinguishing substances, such as powder fire extinguishing agents, liquid fire extinguishing agents, gel fire extinguishing agents, and foam fire extinguishing compositions, may be contained in the internal space (121). The fire extinguishing substance may be released to the outside and suppress flames when the outer shell is damaged by external impact or heat in the event of a fire. Additionally, if necessary, the internal space (121) may be divided into multiple compartments to contain different types of fire extinguishing substances simultaneously, and in this case, the fire extinguishing performance may be improved through interaction upon release.

[0042] A slide projection (122) may be formed protrudingly on one side of the fire extinguisher (120), that is, on the inner side facing the bulkhead shaft (111). The slide projection (122) is configured to be inserted into a slide hole (112) formed in the bulkhead shaft (111) and guide the fire extinguisher (120) to be mounted by moving from the top to the bottom, and may be formed in a shape corresponding to the slide hole (112). For example, the slide projection (122) may be formed in a straight rail shape, a protruding rib shape, or a key shape, and accordingly, the slide hole (112) may also be formed in a corresponding shape so that the fire extinguisher (120) is coupled only in a predetermined direction.

[0043] In particular, the shape of the slide projection (122) may be formed identically for the left fire extinguishing section and the right fire extinguishing section, but may also be formed with different shapes to form an asymmetric coupling structure that allows a specific fire extinguishing section (120) to be coupled only to a specific location. In this case, it is possible to prevent the fire extinguishing section (120) containing different types of fire extinguishing materials from being incorrectly installed, thereby improving the reliability of fire response.

[0044] A grip portion (123) may be formed on the outer side of the fire extinguishing portion (120) to facilitate the user's grip. The grip portion (123) may be formed in a concave groove shape or an outwardly protruding rib shape so that the user's fingers can be in close contact, and an anti-slip pattern or irregularities may be formed on the surface. Accordingly, the user can stably grip the fire extinguishing portion (120) using the grip portion (123) even without holding the handle (114) upright, and it becomes possible to quickly pick up and throw the fire extinguishing bomb (100), especially in emergency situations.

[0045] Additionally, a locking hole (124) may be formed at a predetermined location of the fire extinguishing unit (120). The locking hole (124) is a part into which the locking pin (141) of the second control means (140) is inserted, and can perform the function of secondarily fixing the fire extinguishing unit (120) as the locking pin (141) is inserted or removed according to the rotation of the handle (114). The locking hole (124) may be formed in a circular, elliptical, or slot shape, and may be formed to have an appropriate depth and diameter so as to effectively prevent the fire extinguishing unit (120) from moving upward or shaking when the locking pin (141) is inserted.

[0046] A lid (125) for sealing the internal space (121) may be attached to the top of the fire extinguishing unit (120). The lid (125) may be attached to the fire extinguishing unit (120) by means such as screw fastening, press-fitting, or locking, and may perform the function of protecting the internal fire extinguishing material from the external environment and maintaining performance even during long-term storage. Additionally, the lid (125) may serve to reinforce the structural rigidity of the fire extinguishing unit (120), and if necessary, a weak point or a rupture-inducing structure may be further formed to facilitate damage upon impact.

[0048] The first locking means (130) is configured to ensure that the fire extinguisher (120) remains in a basically fixed state without separate complex operation after being coupled along the slide holes (112) formed on both sides of the bulkhead shaft (111). That is, the first locking means (130) can function as a primary fixing structure that prevents the fire extinguisher (120) from being accidentally detached while being stored or carried by the user, while allowing it to be separated relatively easily when a certain level of extraction force or pressure is applied when necessary. Accordingly, the first locking means (130) can serve as a key component for simultaneously ensuring mounting stability and ease of use of the fire extinguisher (120).

[0049] The first locking means (130) may be configured to include a locking piece (131) and a first elastic member (132). The locking piece (131) may be coupled to a predetermined position on the inner side of the fire extinguishing part (120), more specifically on the slide projection (122), and is formed to be selectively engaged with a coupling groove (113) formed on the inner wall of the slide hole (112). The locking piece (131) may be formed in a flat shape, a hook shape, a projection shape, or an elastic tongue shape, such as having one side fixed and the other side elastically displaceable, and may be configured to be temporarily retracted by an external force during the coupling process and then withdrawn again at a predetermined position to be engaged with the coupling groove (113).

[0050] The first elastic member (132) is configured to provide elastic force to cause the catch piece (131) to return to its original position and may be formed as a coil spring, a leaf spring, an elastic body, or a similar member that provides restoring force. The first elastic member (132) may be positioned at the rear or inside of the catch piece (131) so that the catch piece (131) is elastically supported outward or in a protruding direction under normal conditions. Accordingly, the catch piece (131) maintains a position where it can be caught in the coupling groove (113) in a normal state where no external force is applied.

[0051] More specifically, when the user inserts the fire extinguisher (120) from above to below by aligning it with the slide hole (112) of the bulkhead shaft (111), the slide projection (122) moves downward along the slide hole (112). During this process, the catch piece (131) may be inserted while being temporarily pushed inward by contacting the inner wall of the slide hole (112) or the inclined surface formed at the entrance of the coupling groove (113). Subsequently, when the fire extinguisher (120) reaches a predetermined mounting position, the catch piece (131) is pulled outward again by the elastic restoring force of the first elastic member (132), and at this time, the fire extinguisher (120) can be primarily fixed by being engaged with the coupling groove (113).

[0052] That is, the first locking means (130) can be configured so that automatic fastening is achieved solely through a slide insertion operation, without the need to press a separate lock button or perform a rotation operation when mounting the fire extinguishing unit (120). Accordingly, the user can quickly and intuitively mount the fire extinguishing unit (120) even in an emergency environment such as a fire situation, and can maintain the fire extinguishing unit (120) so that it does not easily fall off due to its own weight or minor external impact during storage.

[0053] In addition, the first locking means (130) may be configured to be released when an external force exceeding a certain level is applied, rather than being a simple permanent fixed structure. For example, when a user pulls upward or applies a pulling force in a predetermined direction to separate the fire extinguishing unit (120), the locking piece (131) may be retracted inward while resisting the elastic force of the first elastic member (132), and the fire extinguishing unit (120) may be separated as it detaches from the coupling groove (113). In this way, the first locking means (130) provides stable fixing force under normal conditions, but can be released relatively easily when the user intentionally wants to separate it, thereby satisfying both ease of use and stability of maintenance.

[0054] The shape, size, and placement position of the above-mentioned catch piece (131) may be varied depending on the size, weight, required fixing force, etc. of the fire extinguishing unit (120). For example, the above-mentioned catch piece (131) may be provided as a single piece, but for a more stable connection, a pair may be provided symmetrically on the left and right, or multiple pieces may be spaced apart in the front and rear directions. In addition, the above-mentioned coupling groove (113) may also be formed as a single piece, but it may be configured to be formed in multiple pieces depending on the mounting depth or position of the fire extinguishing unit (120) to enable multi-stage fastening. In such cases, the user can select different fixing states depending on the mounting depth of the fire extinguishing unit (120).

[0055] The first restraining means (130) can be understood as a basic fixing means that is functionally distinct from the second restraining means (140). That is, the first restraining means (130) performs the role of basically maintaining the fire extinguishing unit (120) regardless of whether the handle (114) is operated, and the second restraining means (140) performs the role of providing an additional fixing state depending on the rotation of the handle (114). Accordingly, the roles of the first restraining means (130) can be distinguished as a structure that secures basic carrying and storage stability of the fire extinguishing projectile (100), while the second restraining means (140) secures additional safety during use or preparation for throwing.

[0057] The second control means (140) is configured to additionally fix the extinguishing part (120) that is primarily fixed by the first control means (130), thereby preventing the extinguishing part (120) from being unintentionally separated during the process of the user gripping or moving the double-structured extinguishing bomb (100), or during the process of preparing to throw it at a fire point. That is, the second control means (140) can function as a secondary fixing structure that improves stability in the usage state by selectively forming an additional fixed state in conjunction with the posture change of the handle (114), in addition to the basic coupling maintenance function provided by the first control means (130).

[0058] The second locking means (140) may be configured to include a locking pin (141) disposed on each side of the bulkhead shaft (111), a guide part (142) that guides the movement of each locking pin (141), and a second elastic member (143) that elastically supports each locking pin (141). Each locking pin (141) may be configured to be selectively inserted into or removed from a locking hole (124) formed in each of the fire extinguishing parts (120). The locking pin (141) may generally be formed in a rod shape, a cylinder shape, or a prismatic shape, and the outer end may be formed as a locking end that is inserted into the locking hole (124), and the inner end may be formed as an interlocking end that contacts or interferes with the interlocking cam part (114b).

[0059] The guide portion (142) may partially surround the outer circumference of each locking pin (141) or be formed in the shape of a guide hole or guide slot through which the locking pin (141) passes. The guide portion (142) may be formed inside the housing (110) or on both sides of the bulkhead axis (111) to guide the locking pin (141) to move linearly only in the forward and backward directions toward the locking hole (124) of each fire extinguisher (120). Accordingly, tilting or eccentric movement of each locking pin (141) is suppressed, thereby ensuring stable locking performance even during repetitive operation.

[0060] The second elastic member (143) may be positioned on the inner or rear side of each locking pin (141) to provide elastic force so that the locking pin (141) returns to its original position under normal circumstances. For example, the second elastic member (143) may be formed in the form of a coil spring, a leaf spring, or an elastic block so that it returns to the inner side when the handle (114) returns to its original position after the locking pin (141) is pushed outward by the interlocking cam part (114b).

[0061] The operation of the second control means (140) can be performed in conjunction with the rotation of the handle (114). More specifically, the handle (114) is rotatably coupled to the end of the bulkhead shaft (111), and an interlocking cam part (114b) can be axially coupled to the rotation shaft (114a). The interlocking cam part (114b) is formed with a structure that protrudes in both directions around the rotation shaft (114a), and can perform the function of converting the rotational movement of the handle (114) into the linear movement of each locking pin (141).

[0062] For example, when the handle (114) is in a lying position, that is, in a storage state in close contact with the outer surface of the housing (110), the protrusions on both sides of the interlocking cam part (114b) are positioned so that they do not push each locking pin (141), and the locking pin (141) can maintain a state of being returned inward by the elastic force of the second elastic member (143). In this case, since the locking pin (141) maintains a state of being spaced apart from the locking hole (124) of the fire extinguishing part (120), the fire extinguishing part (120) can be primarily fixed only by the first control means (130).

[0063] On the other hand, when the user rotates the handle (114) clockwise or counterclockwise to switch to an upright state, the interlocking cam part (114b) rotates together with the rotation axis (114a), and the protrusion on one side of the interlocking cam part (114b) pushes the locking pin (141) located on one side outward so that it is inserted into the locking hole (124) of the one side fire extinguishing part (120), and the protrusion on the other side of the interlocking cam part (114b) pushes the locking pin (141) located on the other side outward so that it is inserted into the locking hole (124) of the other side fire extinguishing part (120). In this way, when each locking pin (141) is inserted into the corresponding locking hole (124), the two fire extinguishing parts (120) form an additional mechanical fixing state by the second locking means (140) in addition to the basic fixing by the first locking means (130), so they can have higher resistance to the upward pulling direction or shaking direction.

[0064] Additionally, when the handle (114) is rotated back to its original position, the protrusions on both sides of the interlocking cam part (114b) release the pressure on each locking pin (141), and the locking pin (141) can be returned inward by the elastic force of the second elastic member (143) and detached from the locking hole (124). Accordingly, the two fire extinguishing parts (120) can be switched back to a state where they are maintained only by the first control means (130).

[0065] In this way, the second control means (140) can implement a structure in which a single interlocking cam part (114b) coupled to a single pivot shaft (114a) acts on each locking pin (141), thereby simultaneously or correspondingly forming or releasing a secondary locking state for both fire extinguishing parts (120). Accordingly, the fire extinguishing projectile (100) of the double structure according to the present invention can simultaneously improve storage efficiency, ease of gripping, safety during movement, and reliability in the ready-to-throw state.

[0067] According to the double-structure fire extinguishing bomb of the present invention, since it is formed as a double structure in which fire extinguishing sections are respectively coupled to both sides of the bulkhead axis, it is possible to perform continuous fire extinguishing using the same fire extinguishing material, or to respond more effectively depending on the type and situation of the fire by selectively using different types of fire extinguishing materials.

[0068] In addition, since the fire extinguishing unit has a structure in which it slides along the slide hole, the mounting and detachment of the fire extinguishing unit are easy, which has the effect of improving user convenience of operation.

[0069] In addition, since a first locking means is provided that engages by elasticity, the fire extinguisher is stably fixed during storage or transport, while being able to be quickly separated when an external force exceeding a certain level is applied, thereby ensuring both ease of use and rapid response capabilities simultaneously.

[0070] In addition, since a second control means is additionally provided that operates a locking pin in conjunction with the rotation of the handle, it is possible to prevent the extinguishing part from unintentionally separating while the user is gripping the extinguishing bomb or preparing to throw it, thereby improving safety.

[0071] In addition, when the handle is laid flat, the overall volume is minimized to facilitate storage and portability, and when the handle is upright, it is configured to be easy to grip while simultaneously being additionally secured by a second locking means, thereby providing the effect of simultaneously ensuring storage convenience and stability during use.

[0072] In addition, since a grip portion is formed on the outer side of the extinguishing unit, the user can stably grip the extinguishing projectile even without using a handle, which has the effect of improving operability in various usage situations.

[0074] A person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0075] 100: Double-structured fire extinguishing grenade 110: Housing 111: Bulkhead shaft 112: Slide ball 113: Connecting groove 114: Handle 114a: Rotating shaft 114b: Yeondong Campus 120: Sohwabu 121: Internal space 122: Slide projection 123: Grip part 124: Locking hole 125: Lid 130: Primary enforcement means 131: Catching piece 132: First elastic member 140: Secondary enforcement means 141: Locking pin 142: Guide section 143: Second elastic member

Claims

Claim 1 A double-structured fire extinguishing projectile comprising: a housing having a bulkhead shaft positioned in the center with slide holes formed along the longitudinal direction on both sides; and fire extinguishing portions each positioned on both sides of the bulkhead shaft and having slide protrusions formed to slide along the slide holes formed on the bulkhead shaft; further comprising a first restraining means including a coupling groove formed on the inner wall of the slide hole and a locking piece that is coupled to the slide protrusion and is pulled out by elasticity and fixed by being caught in the coupling groove to secure the fire extinguishing portion; and further comprising a second restraining means including an interlocking cam portion formed to protrude in both directions and coupled to the pivot axis of a handle rotatably coupled to the end of the bulkhead shaft, and a locking pin positioned on both sides of the interlocking cam portion, which moves outward according to the rotation of the interlocking cam portion and is inserted into a locking hole formed in each fire extinguishing portion. Claim 2 A double-structured fire extinguishing bomb according to claim 1, characterized in that the fire extinguishing section is configured to include the same type of fire extinguishing material on both sides or different types of fire extinguishing materials. Claim 3 delete Claim 4 delete Claim 5 A double-structured fire extinguishing bullet according to claim 1, wherein each of the locking pins is elastically supported and is inserted into or removed from the locking hole according to the rotation of the handle.

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