Ignition assembly and sub-munition warhead having same

Abstract

The application relates to a firing assembly and a primary-secondary function warhead with the same, wherein in the firing assembly: the triggering mechanism, the primary locking mechanism and the secondary locking mechanism are arranged in the secondary warhead; after the primary warhead is launched, the secondary locking mechanism is released from the self-locking state, the secondary locking mechanism is unlocked with the primary locking mechanism, the primary warhead is released, the primary locking mechanism is unlocked with the triggering mechanism, and the triggering mechanism performs the ignition operation. Through the arrangement of the primary locking mechanism and the secondary locking mechanism, the primary locking mechanism is locked and protected in the first inertia action, and the primary locking mechanism is unlocked in the second inertia, so that a strong logic ignition program is realized, and the risk in the service operation and the launching process is avoided. The application effectively solves the problems that the ignition assembly in the primary-secondary warhead has weak logic and the ignition assembly has poor ignition reliability under the action of twice inertia.

Description

Technical Field

[0001] This application relates to the technical field of ignition devices, and more particularly to an ignition assembly and a submunition having the same. Background Technology

[0002] With the gradual development of science and technology, many emerging technologies have come into view, among which civilian functional warheads are a newly added category. Functional warheads can be used for weather management and environmental improvement, and currently, rain-inducing warheads, forest fire-extinguishing warheads, and cloud-dissipating warheads have emerged. Among these, launch-based fire extinguishing technology, as an emerging fire extinguishing technology, has received increasing attention due to its ability to conduct long-range, safe, and effective fire extinguishing operations. However, the design of warheads for civilian use requires consideration of many factors, adapts to more complex environments, and also needs reliable safety and good maintainability.

[0003] In existing technologies, when functional components need to be deployed over a large area, a cluster munition structure is typically used. A cluster munition is usually launched as a whole for a certain time or distance before releasing the submunitions, which then undergo secondary ignition to perform their function. Since functional warheads typically use inertial triggering for ignition, the special design of a cluster munition means that the submunitions inside undergo two inertial events. Electronic ignition is relatively expensive, while traditional mechanical ignition devices are easily affected by the first inertial event, leading to problems with the ignition logic and poor reliability, which can pose risks to both maintenance and launch. Summary of the Invention

[0004] This application provides an ignition assembly and a submunition warhead having the same, to solve the problem that the ignition assembly in the submunition has weak logic and poor ignition reliability under two inertial actions in the prior art.

[0005] In a first aspect, this application provides an ignition assembly for use in a cluster munition warhead. The cluster munition warhead includes a main warhead and multiple secondary warheads, with the multiple secondary warheads disposed within the main warhead. Each secondary warhead includes: an activation mechanism, a primary locking mechanism, and a secondary locking mechanism. The output of the activation mechanism is used to ignite the secondary warheads. The primary locking mechanism is locked to the activation mechanism. The secondary locking mechanism is locked to the primary locking mechanism and has a self-locking state. The activation mechanism, the primary locking mechanism, and the secondary locking mechanism are all disposed within the secondary warheads. After the main warhead is launched, the secondary locking mechanism releases its self-locking state and unlocks from the primary locking mechanism. After the secondary warheads are released, the primary locking mechanism unlocks from the activation mechanism, and the activation mechanism performs the ignition operation.

[0006] In some embodiments of this application, the ignition assembly includes a substrate, the substrate being provided with a first sliding channel, a second sliding channel and a third sliding channel, the ignition mechanism being slidably disposed in the first sliding channel, the primary locking mechanism being slidably disposed in the second sliding channel, and the secondary locking mechanism being slidably disposed in the third sliding channel.

[0007] In some embodiments of this application, the secondary locking mechanism includes a first inertial structure, a first locking member, and a first limiting structure. A receiving groove is provided on the outer periphery of the first inertial structure. The first locking member is located in the receiving groove. The first locking member extends along the length direction of the first inertial structure and abuts against the first end of the third sliding channel and the first inertial structure, respectively. The first limiting structure pushes against the outer periphery of the first inertial structure along the axial direction close to the first inertial structure.

[0008] In some embodiments of this application, the secondary locking mechanism further includes a first elastic member, and the third sliding channel has a receiving space on one side corresponding to the receiving groove. The first elastic member abuts against the second end of the third sliding channel and the first inertial structure.

[0009] In some embodiments of this application, the substrate is provided with a fourth sliding channel, which is connected to the periphery of the third sliding channel. A second elastic member is provided between the first limiting structure and the end of the fourth sliding channel away from the third sliding channel. The second elastic member applies a thrust to the first limiting structure. A guide groove is provided on the side of the first inertial structure away from the receiving groove. The first limiting structure partially extends into the guide groove and can slide relative to the guide groove. The distance between the first limiting structure and the first end of the third sliding channel is greater than the length of the first limiting structure.

[0010] In some embodiments of this application, the sidewall of the second sliding channel is connected to the sidewall of the third sliding channel to form a first connecting channel. The first-level locking mechanism includes a second inertial structure, a second locking member, and a third elastic member. The third elastic member is disposed in the second sliding channel to apply a pushing force to the second inertial structure. The second locking member is slidably disposed in the first connecting channel. The first inertial structure abuts against the second locking member, and the second locking member partially extends into the second inertial structure to form a limit.

[0011] In some embodiments of this application, the second inertial structure is provided with an annular groove. When the secondary locking mechanism is in a self-locking state, the second locking member is partially located in the annular groove, and the end of the second inertial structure away from the third elastic member is provided with an movable gap with one side of the second sliding channel.

[0012] In some embodiments of this application, the sidewall of the first sliding channel communicates with the sidewall of the second sliding channel to form a second connecting channel. The excitation mechanism is provided with an excitation element, a third locking element, and a fourth elastic element. The fourth elastic element is disposed in the first sliding channel to apply a thrust to the excitation element. An ignition structure is provided at the end of the first sliding channel away from the fourth elastic element. The third locking element is slidably disposed in the second connecting channel. The excitation element is provided with an annular groove. The second inertial structure abuts against the third locking element. The third locking element partially extends into the annular groove to limit the excitation element.

[0013] In some embodiments of this application, there are multiple primary locking mechanisms and multiple secondary locking mechanisms, with each primary locking mechanism and each secondary locking mechanism corresponding to the other. Each primary locking mechanism and the triggering mechanism are in a locked state. After the main warhead is launched, each secondary locking mechanism releases its self-locking state and unlocks its corresponding primary locking mechanism. After the secondary warhead is released, each primary locking mechanism unlocks its triggering mechanism, and the triggering mechanism performs the ignition operation.

[0014] Secondly, this application provides a cluster warhead, which includes a main warhead and multiple secondary warheads, each of which is provided with an ignition assembly as described above.

[0015] The technical solutions provided in this application have the following advantages compared with the prior art:

[0016] This application provides an ignition assembly and a sub-warhead having the same function. The ignition assembly includes: an excitation mechanism, a primary locking mechanism, and a secondary locking mechanism. The output of the excitation mechanism is used to ignite the secondary warhead. The primary locking mechanism is locked to the excitation mechanism; the secondary locking mechanism is locked to the primary locking mechanism and has a self-locking state. The excitation mechanism, primary locking mechanism, and secondary locking mechanism are all located within the secondary warhead. After the main warhead is launched, the secondary locking mechanism releases its self-locking state, and the secondary locking mechanism unlocks from the primary locking mechanism. After the secondary warhead is released, the primary locking mechanism unlocks from the excitation mechanism, and the excitation mechanism performs the ignition operation. By setting up the primary and secondary locking mechanisms, the primary locking mechanism is protected from locking during the first inertial event and unlocked during the second inertial event, respectively. This achieves a highly logical ignition program. The mechanical structure enables highly logical ignition program control, ensuring reliability and avoiding risks during operation and launch. This application effectively solves the problem that the ignition components in cluster munitions in the prior art have weak logic and poor ignition reliability under two inertial actions. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 A cross-sectional schematic diagram of an ignition assembly provided in an embodiment of this application is shown;

[0021] Figure 2 It shows Figure 1 A cross-sectional view of the ignition assembly along the AA direction;

[0022] Figure 3 It shows Figure 2 Cross-sectional view of the ignition assembly along the BB direction;

[0023] Figure 4It shows Figure 2 Cross-sectional view of the ignition assembly along the CC direction;

[0024] Figure 5 It shows Figure 2 Cross-sectional view of the ignition assembly along the DD direction;

[0025] Figure 6 It shows Figure 4 Cross-sectional view of the ignition assembly along the EE direction;

[0026] Figure 7 It shows Figure 1 A front view schematic diagram of the first inertial structure of the ignition assembly;

[0027] Figure 8 It shows Figure 7 A side view of the first inertial structure;

[0028] Figure 9 It shows Figure 7 A top view of the first inertial structure;

[0029] Figure 10 It shows Figure 7 A cross-sectional view of the first inertial structure.

[0030] The above figures include the following reference numerals:

[0031] 10. Activation mechanism; 11. Activation element; 111. Annular groove; 12. Third locking element; 13. Fourth elastic element; 20. First-stage locking mechanism; 21. Second inertial structure; 211. Annular groove; 22. Second locking element; 23. Third elastic element; 24. First receiving cavity; 30. Second-stage locking mechanism; 31. First inertial structure; 311. Receiving groove; 312. Guide groove; 313. Inclined platform; 32. First locking element; 33. First limiting structure; 34. First elastic element; 35. Second elastic element; 36. Second receiving cavity; 37. Pressing pin; 40. Base; 41. First sliding channel; 42. Second sliding channel; 43. Third sliding channel; 431. Receiving space; 44. Fourth sliding channel; 45. First connecting channel; 46. Second connecting channel; 47. Sealing plate; 50. Ignition structure. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0034] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0035] like Figures 1 to 6As shown, in a first aspect, embodiments of this application provide an ignition assembly applied to a master-slave warhead. The master-slave warhead includes a main warhead and multiple secondary warheads, with the multiple secondary warheads disposed within the main warhead. The assembly includes: an activation mechanism 10, a primary locking mechanism 20, and a secondary locking mechanism 30. The output of the activation mechanism 10 is used to ignite the secondary warheads. The primary locking mechanism 20 is locked to the activation mechanism 10. The secondary locking mechanism 30 is locked to the primary locking mechanism 20 and has a self-locking state. The activation mechanism 10, the primary locking mechanism 20, and the secondary locking mechanism 30 are all disposed within the secondary warheads. After the main warhead is launched, the secondary locking mechanism 30 releases its self-locking state, and the secondary locking mechanism 30 unlocks from the primary locking mechanism 20. After the secondary warheads are released, the primary locking mechanism 20 unlocks from the activation mechanism 10, and the activation mechanism 10 performs the ignition operation.

[0036] The primary locking mechanism 20 and the secondary locking mechanism 30 respectively protect the primary locking mechanism 20 during the first inertial impact and unlock it during the second inertial impact, achieving a highly logical ignition program. This robust ignition program control, achieved through a mechanical structure, ensures reliability and avoids risks during maintenance and launch. This application effectively solves the problem in existing cluster munitions where the ignition components have weak logic and poor ignition reliability under two inertial impacts.

[0037] It should be noted that in the technical solution of this application embodiment, the unlocking time of the primary and secondary locking mechanisms is strictly controlled through this setting. Utilizing the characteristic of the submunition warhead having two inertial actions, precise control of the unlocking timing is achieved, thereby better controlling the activation method of the secondary warhead. The initial design intent of the submunition warhead is, on the one hand, to carry a large number of secondary warheads simultaneously, and on the other hand, to increase the final range of the secondary warheads. If ignition occurs when the secondary warhead bears the first load, it can lead to ignition inside the main warhead, which in severe cases could affect other secondary warheads, resulting in the risk of premature release. If ignition occurs when the main warhead's firing time is short, it not only fails to reach a safe ignition position, posing a danger to the scene, but also fails to achieve the desired effect for firefighting, cloud penetration, and other operations, delaying the optimal firing time and seriously affecting the operational effectiveness. Furthermore, this setting makes the activation time of the secondary warhead relatively stable, and the second inertial action can be stably carried out within a safe ignition zone, greatly enhancing the safety of the submunition warhead during use.

[0038] like Figure 1 , Figures 3 to 5As shown, in this embodiment, the ignition assembly includes a base 40, which is provided with a first sliding channel 41, a second sliding channel 42, and a third sliding channel 43. The ignition mechanism 10 is slidably disposed within the first sliding channel 41, the primary locking mechanism 20 is slidably disposed within the second sliding channel 42, and the secondary locking mechanism 30 is slidably disposed within the third sliding channel 43. The arrangement of the first sliding channel 41, the second sliding channel 42, and the third sliding channel 43 facilitates the use of inertia to enable the primary locking mechanism 20, the secondary locking mechanism 30, and the ignition mechanism 10 located within them to operate.

[0039] It should be noted that, as Figures 1 to 5 As shown, the first sliding channel 41, the second sliding channel 42, and the third sliding channel 43 are arranged parallel to each other. This arrangement can work with inertia to ensure that the sliding of the components at each position is in a normal state and has a uniform direction. At the same time, it can reduce the lateral friction caused by the sliding direction and avoid problems such as heat generation during the friction process.

[0040] like Figures 2 to 5 As shown, in the technical solution of this embodiment, the secondary locking mechanism 30 includes a first inertial structure 31, a first locking member 32, and a first limiting structure 33. A receiving groove 311 is provided on the outer periphery of the first inertial structure 31. The first locking member 32 is located in the receiving groove 311. The first locking member 32 extends along the length direction of the first inertial structure 31 and abuts against the first end of the third sliding channel 43 and the first inertial structure 31, respectively. The first limiting structure 33 pushes against the outer periphery of the first inertial structure 31 along the axial direction close to the first inertial structure 31.

[0041] The first locking element 32 limits the first inertial structure 31, preventing it from directly contacting the first end of the third sliding channel 43 and thus locking the first-stage locking mechanism 20. The first inertial structure 31 has a certain mass; when the main projectile is launched, it can move away from the first end of the third sliding channel 43 due to initial inertia, thereby releasing the first locking element 32 and finally abutting against the first end of the third sliding channel 43 to unlock the first-stage locking mechanism 20. It should be noted that the pushing direction of the first limiting structure 33 is perpendicular to the axis of the first inertial structure 31; that is, the direction in which the first limiting structure 33 applies the pushing force is perpendicular to the axis of the first inertial structure 31. This arrangement provides maximum pressure, maximizing the pressure and friction between the first inertial structure 31 and the third sliding channel 43, thus providing a basis for self-locking in conjunction with the first locking element 32.

[0042] It should be noted that the receiving groove 311 and the third sliding channel 43 form the final receiving space of the first locking member 32. The first locking member 32 is specifically a sphere, which is convenient for rolling. At the same time, the size of the receiving space is in clearance fit with the diameter of the first locking member 32. The first locking member 32 can be a steel ball or a sphere made of a high-strength material.

[0043] like Figures 2 to 5 , Figures 8 to 10 As shown, in the technical solution of this embodiment, the secondary locking mechanism 30 further includes a first elastic member 34, and the third sliding channel 43 is provided with a receiving space 431 on one side corresponding to the receiving groove 311. The first elastic member 34 pushes against the second end of the third sliding channel 43 and the first inertial structure 31 respectively. The first elastic member 34 is provided to apply a pushing force to the first inertial structure 31, so that it remains in a resisting state in the direction away from the first elastic member 34. This arrangement realizes the self-locking of the first inertial structure 31. At the same time, because the first locking member 32 is located in the receiving groove 311, it ensures that the first inertial structure 31 will not unlock the primary locking mechanism 20. When the main projectile is launched, the first inertial force is generated. Under the action of inertia, the first inertial structure 31 compresses the first elastic element 34. At this time, the receiving groove 311 moves in the direction close to the first elastic element 34 and eventually connects with the receiving space 431. The spherical first locking element 32 rolls from the receiving groove 311 into the receiving space 431 via the inclined platform 313. At this time, the inertial force gradually disappears, and the first elastic element 34 releases elastic potential energy and converts it into elastic force, which acts on the first inertial structure 31, pushing the first inertial structure 31 towards the first end of the third sliding channel 43, thereby unlocking the first-level locking mechanism 20. The advantage of this setting is that it strictly controls the unlocking time of the first-level locking mechanism 20. That is, the first-level locking mechanism 20 can only be unlocked after the first inertial force disappears. This setting effectively avoids the influence of the first inertial force on the first-level locking mechanism 20.

[0044] It should be noted that, as Figures 3 to 5 As shown, in the technical solution of this embodiment, there are two first locking members 32. Under normal conditions, both locking members are located in the receiving groove 311. This arrangement can increase the length of the receiving groove 311 and avoid the receiving groove 311 being too short, which would result in poor balance and serious deviation in the third sliding channel 43. The longer receiving groove 311 can be controlled by the cooperation of the two first locking members 32. That is, when the first inertial action occurs, only one first locking member 32 enters the receiving space 431, and the other first locking member 32 can abut against the receiving groove 311 and the third sliding channel 43 to maintain the overall stability of the first inertial structure 31.

[0045] like Figure 4 , Figure 5 and Figure 10As shown, the bottom of the first inertial structure 31 is provided with a second receiving cavity 36. The second receiving cavity 36 is formed along the direction close to the receiving groove 311. The first elastic member 34 can partially extend into the second receiving cavity 36. This arrangement can reduce the fixed connection between the first elastic member 34 and the first inertial structure 31 and realize the circumferential limitation of the first elastic member 34.

[0046] like Figure 3 and Figure 5 As shown, in the technical solution of this embodiment, the secondary locking mechanism 30 further includes a pressing pin 37, which is disposed on the base 40. Since the installation of the first inertial structure 31 requires the cooperation of the first elastic member 34, it would be difficult to assemble the first locking member 32 through the receiving space 431, and it would easily cause wear to adjacent components. Therefore, when installing the first locking member 32, a hole slightly larger than the size of the first locking member 32 is opened on the base 40. At this time, the receiving groove 311 and the receiving space 431 are isolated from each other. The first locking member 32 is inserted through the hole, and then the pressing pin 37 is inserted into the hole to squeeze the first locking member 32 to push against the first inertial structure 31, thereby achieving the locking of the primary locking mechanism 20.

[0047] like Figure 4 and Figure 7 As shown, in this embodiment, the substrate 40 is provided with a fourth sliding channel 44, which is connected to the periphery of the third sliding channel 43. A second elastic member 35 is provided between the first limiting structure 33 and the end of the fourth sliding channel 44 away from the third sliding channel 43. The second elastic member 35 applies a pushing force to the first limiting structure 33. A guide groove 312 is provided on the side of the first inertial structure 31 away from the receiving groove 311. The first limiting structure 33 partially extends into the guide groove 312 and can slide relative to the guide groove 312. The distance between the first limiting structure 33 and the first end of the third sliding channel 43 is greater than the length of the first limiting structure 33. The guide groove 312 can prevent the first inertial structure 31 from rotating and increase the contact area between the first inertial structure 31 and the first limiting structure 33, thereby increasing the friction between them and providing better support.

[0048] like Figure 4As shown, in the technical solution of this embodiment, under normal conditions, the end of the first limiting structure 33 is partially inserted into the bottom of the guide groove 312 and partially extends out of the guide groove 312. At this time, the first locking member 32 makes the end of the first inertial structure 31 away from the first elastic member 34 have a certain gap with the first end of the third sliding channel 43. After the first inertial action, the first locking member 32 no longer restricts the position of the first inertial structure 31. Compared with before the inertial action, the position of the first inertial structure 31 moves in the direction closer to the first end of the third sliding channel 43, that is, the first limiting structure 33... The end of the first inertial structure 31 that is away from the first elastic member 34 moves toward the first elastic member 34. At this time, the first limiting structure 33 is no longer restricted by the guide groove 312. Under the action of the second elastic member 35, it moves in a direction perpendicular to the axis of the first inertial structure 31, thereby limiting the end of the first inertial structure 31 that is close to the first elastic member 34. This setting allows the first inertial structure 31 to be completely locked by the first limiting structure 33 after the first inertial action ends, so that the first-level locking mechanism 20 is completely unlocked and is no longer restricted by the first inertial structure 31.

[0049] Furthermore, such as Figure 7 As shown, in one optional embodiment, the guide groove 312 can be provided with a curved channel. This configuration, together with the relatively fixed first limiting structure 33, can decelerate the first inertial structure 31 under the first inertial action, avoiding the first inertial structure 31 from sliding too fast, causing the first locking member 32 to get stuck before entering the receiving space 431, resulting in the first-level locking mechanism 20 being unable to unlock, ultimately leading to ignition failure.

[0050] It should be noted that the inclined platform 313 has a certain guiding function, which can convert part of the force into a force in the horizontal direction perpendicular to the axis, so that the first locking member 32 enters the receiving space 431.

[0051] like Figure 5As shown, in this embodiment, the sidewall of the second sliding channel 42 communicates with the sidewall of the third sliding channel 43 to form a first connecting channel 45. The first-stage locking mechanism 20 includes a second inertial structure 21, a second locking member 22, and a third elastic member 23. The third elastic member 23 is disposed within the second sliding channel 42 to apply a pushing force to the second inertial structure 21. The second locking member 22 is slidably disposed within the first connecting channel 45. The first inertial structure 31 abuts against the second locking member 22, and the second locking member 22 partially extends into the second inertial structure 21 to form a limit. This arrangement allows the first inertial structure 31 to release its pushing force on the second locking member 22 after the first inertial action, enabling the second locking member 22 to enter the bottom of the third sliding channel 43 along the first connecting channel 45, thereby completely unlocking the second inertial structure 21 and preparing for the second inertial action. The third elastic element 23 is used to apply thrust to the second inertial structure 21. Its effect and principle are the same as those of the first elastic element 34, and will not be described again here.

[0052] like Figure 5 As shown, in this embodiment, the second inertial structure 21 is provided with an annular groove 211. When the secondary locking mechanism 30 is in a self-locking state, the second locking member 22 is partially located within the annular groove 211. A movable gap is provided between the end of the second inertial structure 21 away from the third elastic member 23 and one side of the second sliding channel 42. The annular groove 211 is used to accommodate part of the second locking member 22, which limits the second inertial structure 21. At this time, the second inertial structure 21 will not slide within the second sliding channel 42. The movable gap, in conjunction with the third elastic member 23, allows the second inertial structure 21 to move along the direction of force applied by the third elastic member 23 after unlocking, filling the movable gap. At this time, the annular groove 211 will be misaligned with the first connecting channel 45. This arrangement causes the second locking member 22 located within the annular groove 211 to be pushed, thereby entering the third sliding channel 43 along the first connecting channel 45, achieving complete unlocking of the second inertial structure 21. It should be noted that the second locking member 22 can be a spherical structure or a roller structure. This is because it is more adaptable to the shape of the annular groove 211 and facilitates rolling. As the annular groove 211 fills the gap in the second inertial structure, the distance between it and the second locking member 22 gradually decreases, thereby exerting a pushing effect. The bottom of the second inertial structure 21 is provided with a first receiving cavity 24 for accommodating part of the third elastic member 23. The end of the third elastic member 23 is encircled by the first receiving cavity 24, thereby restricting the circumferential degree of freedom. This arrangement ensures that the direction of action of the third elastic member 23 remains constant, the direction of the applied thrust is accurate, and it is not easily damaged.

[0053] like Figure 1As shown, in this embodiment, the sidewall of the first sliding channel 41 communicates with the sidewall of the second sliding channel 42 to form a second connecting channel 46. The ignition mechanism 10 is provided with an ignition member 11, a third locking member 12, and a fourth elastic member 13. The fourth elastic member 13 is disposed within the first sliding channel 41 to apply a pushing force to the ignition member 11. An ignition structure 50 is disposed at the end of the first sliding channel 41 away from the fourth elastic member 13. The third locking member 12 is slidably disposed within the second connecting channel 46. The ignition member 11 is provided with an annular groove 111. The second inertial structure 21 abuts against the third locking member 12, and a portion of the third locking member 12 extends into the annular groove 111, thus limiting the ignition member 11. The fourth elastic member 13 is provided to apply a pushing force to the ignition member 11 so that after contact locking, the ignition member 11 pierces the ignition structure 50 to complete ignition. The setting principle of the second connecting channel 46 and the third locking member 12 is the same as that of the first connecting channel 45 and the second locking member 22. It should be noted that the end of the activating member 11 away from the fourth elastic member 13 is provided with a firing pin structure, which can pierce the ignition structure 50 to achieve ignition. The bottom of the activating member 11 is formed into a cylinder, so that the fourth elastic member 13 surrounds the cylinder and is fitted with a clearance around the cylinder. This arrangement restricts the degree of freedom of the fourth elastic member 13 around its periphery through the cylinder, which can reduce the volume and mass of the activating member 11 and ensure that the pushing of the fourth elastic member 13 will not deflect, thus preventing the activating member 11 from failing to activate. In the technical solution of this embodiment, each elastic member is a spring. Springs are easy to manufacture and can be customized according to requirements, making them excellent force-applying elements.

[0054] like Figure 1 As shown, in this embodiment, there are multiple primary locking mechanisms 20 and multiple secondary locking mechanisms 30. Each primary locking mechanism 20 and each secondary locking mechanism 30 is arranged in a one-to-one correspondence, and each primary locking mechanism 20 and the triggering mechanism 10 are in a locked state. After the main warhead is launched, each secondary locking mechanism 30 releases its self-locking state, and each secondary locking mechanism 30 unlocks its corresponding primary locking mechanism 20. After the secondary warhead is released, each primary locking mechanism 20 unlocks its connection to the triggering mechanism 10, and the triggering mechanism 10 performs the ignition operation. Using a multi-channel control method to control the triggering mechanism 10 ensures that triggering during operation will not affect the ignition components of the submunition warhead, effectively adding multiple layers of protection and avoiding the risk of accidental activation.

[0055] It should be noted that, in the ignition assembly provided in this application embodiment, during service processing, the two-stage inertial safety mechanism (first-stage locking mechanism 20 and second-stage locking mechanism 30) constrains the ignition device (excitation mechanism 10) to be in a safe state.

[0056] When the first inertial action occurs, the first inertial structure 31 in the secondary locking mechanism 30 moves to the bottom along the third sliding channel 43 under the action of inertia. The first locking member 32 of the receiving groove 311 of the first inertial structure 31 then descends into the receiving space 431 on the side and rolls out of the receiving groove 311 of the first inertial structure 31. After the first inertial structure 31 reaches the bottom, since its upper end surface is higher than the second locking member 22 of the locking primary locking mechanism 20, it still locks the primary locking mechanism 20.

[0057] After the initial inertial force disappears, the first inertial structure 31 moves upward under the resistance of the first elastic member 34. Since the first locking member 32 in the receiving groove 311 has rolled out, the upper end face of the first inertial structure 31 contacts the top surface of the corresponding inner cavity of the third sliding channel 43. The lower end face of the first inertial structure 31 is higher than the second locking member 22 of the locking first-stage locking mechanism 20. Under the action of the second elastic member 35, the first limiting structure 33 extends out to lock the first inertial structure 31. The second locking member 22 between the first-stage locking mechanism 20 and the second-stage locking mechanism 30 rolls out, releasing the lock on the first-stage locking mechanism 20.

[0058] When the second inertial action occurs, the first-level locking mechanism 20 moves downward under the action of inertia, overcoming the resistance of the third elastic element 23, until it releases the third locking element 12 between the first-level locking mechanism 20 and the ignition mechanism 10, thus releasing the locking of the ignition mechanism 10. The firing pin of the ignition element 11 on the ignition mechanism 10 moves upward under the action of the fourth elastic element 13, striking the ignition structure and completing the activation action.

[0059] This design makes full use of the inertial effects at different times, so that the secondary warhead in the cluster munition has a strict activation procedure and activation conditions, which can ensure that the activation of the cluster munition achieves the best effect.

[0060] Secondly, this application provides a cluster munition warhead, comprising a main warhead and multiple secondary warheads, each containing an ignition assembly as described above. This cluster munition warhead allows for the configuration of multiple secondary warheads as needed, ensuring that the secondary warheads do not trigger on the first inertial impact, employing a strict ignition logic. Furthermore, the ignition time of each secondary warhead is consistent with the second inertial impact, meaning the ignition time of the secondary warheads is controllable, thus facilitating the effective function of the warhead. Specifically, the functional warheads can be forest fire extinguishing projectiles, rain-making projectiles, or cloud-penetrating projectiles, etc., enabling the secondary warheads to re-ignite upon reaching a designated location after long-range launch, thereby expanding the coverage area and achieving better operational results.

[0061] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0062] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0063] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An ignition assembly applied to a cluster munition warhead, the cluster munition warhead comprising a main warhead and a plurality of secondary warheads, wherein the plurality of secondary warheads are disposed within the main warhead, characterized in that, include: The output end of the firing mechanism (10) is used to ignite the secondary warhead; A primary locking mechanism (20) is engaged with the triggering mechanism (10); A secondary locking mechanism (30) is engaged with the primary locking mechanism (20), and the secondary locking mechanism (30) is self-locking. The activation mechanism (10), the primary locking mechanism (20), and the secondary locking mechanism (30) are all located inside the secondary warhead. After the main warhead is launched, the secondary locking mechanism (30) releases its self-locking state and unlocks from the primary locking mechanism (20). After the secondary warhead is released, the primary locking mechanism (20) unlocks from the activation mechanism (10), and the activation mechanism (10) performs the ignition operation. The ignition assembly further includes a substrate (40), which is provided with a first sliding channel (41), a second sliding channel (42) and a third sliding channel (43). The ignition mechanism (10) is slidably disposed in the first sliding channel (41), the first-stage locking mechanism (20) is slidably disposed in the second sliding channel (42), and the second-stage locking mechanism (30) is slidably disposed in the third sliding channel (43). The secondary locking mechanism (30) includes a first inertial structure (31) and a first locking member (32). The outer periphery of the first inertial structure (31) is provided with a receiving groove (311). The first locking member (32) is located in the receiving groove (311). The first locking member (32) extends along the length direction of the first inertial structure (31) and abuts against the first end of the third sliding channel (43) and the first inertial structure (31), respectively. The secondary locking mechanism (30) further includes a first elastic element (34), and the third sliding channel (43) is provided with a receiving space (431) on one side corresponding to the receiving groove (311). The first elastic element (34) pushes against the second end of the third sliding channel (43) and the first inertial structure (31). The sidewall of the second sliding channel (42) is connected to the sidewall of the third sliding channel (43) to form a first connecting channel (45). The first-level locking mechanism (20) includes a second inertial structure (21) and a second locking member (22). The second locking member (22) is slidably disposed in the first connecting channel (45). The first inertial structure (31) abuts against the second locking member (22). The second locking member (22) partially extends into the second inertial structure (21) to form a limit. When the main warhead generates a first inertia during launch, the first inertia compresses the first elastic element, the receiving groove connects with the receiving space, the first locking element rolls from the receiving groove into the receiving space, and the secondary locking mechanism releases its self-locking; after the first inertia disappears, the first elastic element pushes the first inertial structure towards the first end of the third sliding channel, and the second locking element enters the bottom of the third sliding channel along the first connecting channel to unlock the second inertial structure.

2. The ignition assembly according to claim 1, characterized in that, The secondary locking mechanism (30) further includes a first limiting structure (33), which abuts against the outer periphery of the first inertial structure (31) along the axial direction close to the first inertial structure (31).

3. The ignition assembly according to claim 2, characterized in that, The base (40) is provided with a fourth sliding channel (44), which is connected to the periphery of the third sliding channel (43). A second elastic element (35) is provided between the first limiting structure (33) and the end of the fourth sliding channel (44) away from the third sliding channel (43). The second elastic element (35) applies a thrust to the first limiting structure (33). A guide groove (312) is provided on the side of the first inertial structure (31) away from the receiving groove (311). The first limiting structure (33) extends into the guide groove (312) and can slide relative to the guide groove (312).

4. The ignition assembly according to claim 1, characterized in that, The primary locking mechanism (20) further includes a third elastic element (23), which is disposed in the second sliding channel (42) to apply a thrust to the second inertial structure (21).

5. The ignition assembly according to claim 4, characterized in that, The second inertial structure (21) is provided with an annular groove (211). When the secondary locking mechanism (30) is in a self-locking state, the second locking member (22) is partially located in the annular groove (211). The end of the second inertial structure (21) away from the third elastic member (23) is provided with an active gap with one side of the second sliding channel (42).

6. The ignition assembly according to claim 4, characterized in that, The sidewall of the first sliding channel (41) is connected to the sidewall of the second sliding channel (42) to form a second connecting channel (46). The excitation mechanism (10) is provided with an excitation element (11), a third locking element (12) and a fourth elastic element (13). The fourth elastic element (13) is disposed in the first sliding channel (41) to apply a thrust to the excitation element (11). The end of the first sliding channel (41) away from the fourth elastic element (13) is provided with an ignition structure (50). The third locking element (12) is slidably disposed in the second connecting channel (46). The excitation element (11) is provided with an annular groove (111). The second inertial structure (21) abuts against the third locking element (12). The third locking element (12) extends into the annular groove (111) to limit the excitation element (11).

7. The ignition assembly according to any one of claims 1 to 6, characterized in that, There are multiple primary locking mechanisms (20) and multiple secondary locking mechanisms (30). The multiple primary locking mechanisms (20) and multiple secondary locking mechanisms (30) are arranged in a one-to-one correspondence. Each primary locking mechanism (20) and the triggering mechanism (10) are locked. After the main warhead is launched, each secondary locking mechanism (30) is released from its self-locking state and each secondary locking mechanism (30) is unlocked from the corresponding primary locking mechanism (20). After the secondary warhead is released, each primary locking mechanism (20) is unlocked from the triggering mechanism (10) and the triggering mechanism (10) performs the ignition operation.

8. A cluster munition warhead, characterized in that, The submunition functional warhead includes a main warhead and multiple secondary warheads, and each of the multiple secondary warheads is provided with an ignition assembly as described in any one of claims 1 to 7.

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