A high-safety integrated fuze structure with bionic design

Abstract

The present invention discloses a bionic design high-safety integrated fuze structure, which solves the problems of existing fuzes that require manual assembly of internal parts, resulting in large assembly errors, long production cycles, and high costs. The structure comprises an outer shell and an internal structure, wherein the internal structure includes an upper plate, a lower plate, a support platform, a firing pin, and a detonator seat. The upper plate and the lower plate are connected by a connecting column. The connecting column is integrally curved, and its diameter gradually decreases from the middle to the two ends. The two ends of the connecting column are respectively connected to the upper plate and the lower plate. The outer edge of the bottom of the support platform is connected to the inner wall of the outer shell. The upper part of the detonator seat is connected to the interior of the support platform cavity. The lower part of the detonator seat is connected to the inner wall of the outer shell. The firing pin is located below the lower plate. The lower plate and the support platform are connected by a first supporting column. A second supporting column is provided between the first supporting column and the support platform. The upper end of the second supporting column is connected to the first supporting column, and the lower end is connected to the upper surface of the support platform.

Description

Technical Field

[0001] The invention relates to a high-safety integrated fuze structure with a bionic design. Background Art

[0002] Fuzes are detonating devices installed on artillery shells, bombs, mines, and other devices, ensuring the safe and timely detonation of the warhead. Ensuring safety under unexpected conditions is a fundamental and crucial requirement for fuzes. A poorly designed fuze could cause the warhead to detonate prematurely, failing to kill the enemy and potentially causing casualties on the side. Furthermore, ensuring that the fuze detonates the ammunition at the predetermined time, location, and method is also a fundamental requirement. Existing fuze manufacturing methods, on the other hand, require each component to be individually manufactured and then manually assembled. This separate production followed by manual assembly leads to significant assembly errors, making it difficult to ensure the safety and reliability of the fuze during service. This also results in long production cycles and high costs. Summary of the Invention

[0003] In view of this, the present invention provides a high-safety integrated fuze structure with a bionic design. From the perspective of fuze safety and reliability requirements, the present invention draws on the energy absorption, vibration reduction and impact resistance principle of the woodpecker's head, so that the integrated fuze can dissipate the impact energy during the production, assembly, transportation, and launch processes, thereby avoiding premature explosion of the shells and ensuring the high safety of the fuze. At the same time, the structure can be detonated in time after contacting the target, ensuring the high reliability of the fuze. At the same time, through the integrated design of the fuze and the use of 3D printing technology to complete the integrated manufacturing method, no assembly is required, and it has the advantages of high material utilization, short manufacturing cycle, and integrated molding of complex parts.

[0004] In order to solve the above problems, the embodiments of the present invention provide a biomimetic high-security integrated fuze structure, which is special in that:

[0005] It comprises an outer shell and an internal structure arranged in the outer shell, and the outer shell and the internal structure are manufactured by integral molding.

[0006] The outer shell is a cylindrical structure; the internal structure includes, from top to bottom, an upper plate, a lower plate, a support platform, a firing pin and a detonator seat; the upper plate, lower plate, support platform, firing pin and detonator seat are all coaxially arranged with the outer shell.

[0007] The upper plate and the lower plate are connected by connecting columns, and the number of the connecting columns is at least two. The connecting columns are bent as a whole, and the diameter of the connecting columns gradually decreases from the middle to the two ends. The two ends of the connecting columns are respectively connected to the bottom surface of the upper plate and the upper surface of the lower plate.

[0008] The support platform includes a truncated cone structure, the interior of which is hollow to form a cavity, and the upper surface is provided with a through hole. The outer edge of the bottom of the support platform is connected to the inner wall of the shell, the upper part of the detonator seat is connected to the inside of the support platform cavity, and the lower part of the detonator seat is connected to the inner wall of the shell.

[0009] The firing pin is located below the lower plate, with the top of the firing pin connected to the bottom surface of the lower plate, and the firing pin passes through a through-hole in the support platform. The lower plate and the support platform are connected by a first support column, and the number of the first support columns is at least two. The first support columns are arranged at an angle, with their upper ends connected to the bottom surface of the lower plate and their lower ends connected to the side walls of the support platform. A second support column is also provided between the first support column and the support platform. The second support column is arranged at an angle, with its upper end connected to the first support column and its lower end connected to the upper surface of the support platform. The upper plate and the lower plate serve as a connection, the connecting column and the first support column serve to absorb energy, reduce vibration and resist impact, and the second support column and the support platform serve as a support.

[0010] In some embodiments, the number of the connecting columns is 2-8, and the connecting columns are evenly distributed around the circumference of the circle with the axis of the lower plate as the center.

[0011] In some embodiments, the diameter of the middle portion of the connecting column is 1-4 mm, and the diameter of the end portion of the connecting column is 0.5-3 mm.

[0012] In some embodiments, the distance from the center of the middle cross section of the connecting column to the axis of the overall structure of the fuze is 2-5 mm, and the distance from the center of the end cross section to the axis of the overall structure of the fuze is 1-3 mm.

[0013] In some embodiments, the first support columns are evenly distributed around the axis of the lower plate, with a number of 2-8 and a diameter of 0.5-3 mm. The angle between the first support column and the axis of the fuse is 5°-45°.

[0014] In some embodiments, the distance from the edge of the lower plate to the corresponding end of the connecting column is less than or equal to 1 mm, and the angles between the second support column, the side of the support platform and the axis of the overall structure of the fuse are all less than or equal to 45°.

[0015] In some embodiments, an annular groove is provided at the connection between the lower part of the detonator seat and the inner wall of the shell. The radial cross-section of the annular groove is semicircular. A plurality of through holes are provided at the bottom of the annular groove, and the plurality of through holes are evenly distributed in the circumferential direction with the axis of the shell as the center.

[0016] In some embodiments, the side walls of the shell are provided with a circle of through holes at the horizontal height corresponding to the positions of the connecting column, the first support column and the detonator seat. The number of through holes in each circle is 3-8 and is evenly distributed along the circumferential direction of the shell. The holes along the axis of the overall structure of the fuse are on different busbars of the cylindrical shell.

[0017] In some embodiments, the through hole on the side wall of the housing is in a diamond shape or a teardrop shape. When the through hole is in a diamond shape, the side length of the through hole is 1-5 mm, and the acute angle is less than or equal to 45°.

[0018] Compared with the prior art, the biomimetic design of the high-safety integrated fuze structure of the present invention has at least the following beneficial effects:

[0019] 1. The present invention realizes the integrated design of the internal parts of the fuze while meeting the basic conditions of fuze safety and reliability, and solves the problems of the original fuze that require manual assembly resulting in large assembly errors, long production cycle, and high cost.

[0020] 2. This invention employs a bionic design of the woodpecker's head structure, which absorbs energy, reduces vibration, and resists impact. By utilizing the bending deformation of the connecting column and the supporting and protective function of the first support column, this design effectively prevents premature shell detonation, improving the safety of the fuze. Furthermore, the fuze's energy absorption can be adjusted by adjusting the thickness, curvature, and distance from the fuze axis of the connecting column and the first support column. This allows for controllable fuze energy absorption, allowing it to adapt to shells of varying firing rates and ranges.

[0021] 3. The present invention uses lightweight metal materials and adopts metal 3D printing methods to achieve lightweight and integrated manufacturing of the fuze.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A perspective view of the bionic-designed high-security integrated fuze structure of the present invention;

[0025] Figure 2 A cross-sectional view of the high-security integrated fuze structure designed by the present invention;

[0026] Figure 3 A schematic diagram of the internal structure of the bionic-designed high-security integrated fuze of the present invention;

[0027] Figure 4Schematic diagram of the holes on the shell of the high-safety integrated fuze structure designed by the present invention Figure 1 ;

[0028] Figure 5 Schematic diagram of the holes on the shell of the high-safety integrated fuze structure designed by the present invention Figure 2 .

[0029] The reference numerals in the figures are as follows:

[0030] Upper plate 1, connecting column 2, lower plate 3, first supporting column 4, second supporting column 5, supporting platform 6, firing pin 7, detonator seat 8, and outer shell 9. DETAILED DESCRIPTION

[0031] To further illustrate the technical means and effects employed by the present invention to achieve its intended objectives, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0032] In the description of the present invention, it should be clarified that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; the terms "vertical", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, and do not mean that the devices or elements referred to must have a specific direction or position, and therefore cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] Example 1

[0035] This embodiment provides a bionic design of a high-security integrated fuze structure, see Figure 1 and Figure 2, including a shell 9 and an internal structure arranged in the shell 9. The shell 9 and the internal structure are manufactured in an integrated manner using 3D printing technology, which effectively solves the problem of large assembly errors of existing fuzes.

[0036] Specifically, see Figure 2 and Figure 3 , the outer shell 9 is a cylindrical structure; the internal structure includes, from top to bottom, an upper plate 1, a lower plate 3, a support platform 6, a firing pin 7 and a detonator seat 8; the upper plate 1, the lower plate 3, the support platform 6, the firing pin 7 and the detonator seat 8 are all coaxially arranged with the outer shell 9. The upper plate 1 is a disc structure, and the upper plate 1 and the lower plate 3 are connected by a connecting column 2, and the number of the connecting columns 2 is at least two. The two ends of the connecting column are respectively connected to the bottom surface of the upper plate 1 and the upper surface of the lower plate 3. At the same time, in order to make the stress distribution on the connecting column 2 more uniform when the shell is impacted, the connecting column 2 is bent as a whole during design, and the diameter of the connecting column 2 gradually decreases from the middle to the two ends, thereby ensuring its energy absorption capacity by reducing the stress concentration area.

[0037] The connecting post 2 draws on the energy absorption, vibration reduction and impact resistance principles of the woodpecker's beak sheath. The bending deformation of the connecting post 2 achieves an impact-absorbing effect, ensuring that the fuze can dissipate impact energy during production, assembly, transportation, and firing, preventing the firing pin 7 from accidentally triggering the detonator in the detonator seat 8. This prevents premature detonation of the projectile, ensuring the high safety of the fuze. At the same time, the structure can complete detonation promptly after contact with the target, ensuring the high reliability of the fuze.

[0038] See also Figure 2 The support platform 6 includes a truncated cone structure, the interior of which is hollow to form a cavity, and the upper surface is provided with a through hole. The outer edge of the bottom of the support platform 6 is connected to the inner wall of the outer shell 9, the upper part of the detonator seat 8 is connected to the inside of the cavity of the support platform 6, and the lower part of the detonator seat 8 is connected to the inner wall of the outer shell 9.

[0039] See also Figure 2 and Figure 3 The firing pin 7 is located under the lower plate 3 , the top of the firing pin 7 is connected to the bottom surface of the lower plate 3 , and the firing pin 7 passes through the through hole of the support platform 6 .

[0040] The lower plate 3 and the support platform 6 are connected via a first support column 4. The number of the first support columns 4 includes at least two. The first support column 4 is tilted, and its upper end is connected to the bottom surface of the lower plate 3, and its lower end is connected to the side wall of the support platform 6. A second support column 5 is also provided between the first support column 4 and the support platform 6. The second support column 5 is tilted, and its upper end is connected to the first support column 4, and its lower end is connected to the upper surface of the support platform 6. The first support column 4 draws on the energy absorption, vibration reduction and impact resistance principle of the woodpecker's skull, and can play a supporting and protective role for the firing pin 7 (corresponding to the woodpecker's brain) during the production, assembly, transportation, and launch processes. At the same time, it can ensure the reliable operation of the fuze by buckling after the shell contacts the target.

[0041] As a preferred embodiment of the present invention, the number of the connecting columns 2 is 2-8, and the connecting columns 2 are evenly distributed around the circumference with the axis of the lower plate 3 as the center. The diameter of the middle part of the connecting column 2 is 1-4 mm, and the diameter of the end part of the connecting column 2 is 0.5-3 mm. The distance from the center of the middle cross section of the connecting column 2 to the axis of the overall structure of the fuze is 2-5 mm, and the distance from the center of the end cross section to the axis of the overall structure of the fuze is 1-3 mm. For different firing rates and ranges, when the shells need to dissipate different amounts of impact energy, the energy absorption capacity of the structure can be adjusted by changing the thickness of the connecting column 2 (i.e., the above-mentioned gradient diameter) and the degree of curvature (i.e., the distance from the middle and both ends of the connecting column 2 to the axis of the overall structure of the fuze), thereby achieving controllable energy absorption of the fuze.

[0042] In a preferred embodiment of the present invention, the first support columns 4 are evenly distributed around the circumference of the lower plate 3, with a number of 2-8, a diameter of 0.5-3 mm, and an angle between the first support columns 4 and the fuze axis of 5°-45°. To accommodate different projectile impact energies required to be dissipated under conditions of varying firing rates and ranges, the structural strength can be adjusted by varying the thickness (diameter) and inclination (angle) of the first support columns 4, resulting in varying energy absorption capacities and thus controllable fuze energy absorption.

[0043] As a preferred embodiment of the present invention, see Figure 3 The overhang length of the edge of the lower plate 3, that is, the distance from the edge of the lower plate 3 to the corresponding end of the connecting column 2 is less than or equal to 1 mm, and the angles between the side surfaces of the second support column 5 and the support platform 6 and the axis of the overall structure of the fuze are all less than or equal to 45°, so as to ensure that no unnecessary support is required during the printing process; at the same time, the second support column 5 can directly play a supporting role to ensure that the support platform 6 is completely printed during the manufacturing process.

[0044] As a preferred embodiment of the present invention, see Figure 1 and Figure 2An annular groove is defined at the junction of the lower portion of the detonator holder 8 and the inner wall of the outer shell 9. The radial cross-section of the groove is semicircular, and the bottom of the groove is provided with multiple through-holes, evenly distributed circumferentially around the axis of the outer shell 9. This facilitates powder removal after printing. The semicircular cross-section of the annular groove further facilitates powder flow into the through-holes, while also ensuring printing accuracy. Preferably, the bottom through-holes have a diameter of 1-2.5 mm and are present in 3-8 holes.

[0045] As a preferred embodiment of the present invention, see Figure 1 、 Figure 4 and Figure 5 In order to facilitate the powder cleaning work after printing is completed, the side wall of the shell 9 is provided with a circle of through holes at the horizontal height corresponding to the positions of the connecting column 2, the first support column 4 and the detonator seat 8. The number of through holes in each circle is 3-8, and they are evenly distributed along the circumference of the shell 9. The holes along the axis of the overall structure of the fuze are on different busbars of the cylindrical shell 9 to ensure the strength of the shell 9.

[0046] See also Figure 4 and Figure 5 As a preferred embodiment, the through hole on the side wall of the housing 9 is in a diamond or teardrop shape. When the through hole is in a diamond shape, the side length of the through hole is 1-5 mm, and the acute angle is less than or equal to 45°.

[0047] As a preferred embodiment of the present invention, the internal structure and the shell 9 are manufactured in an integrated manner using a metal 3D printing method. The materials of the internal structure and the shell 9 are both corrosion-resistant and have a density of less than 5g / cm 3 Lightweight metal materials, including but not limited to aluminum alloys.

[0048] In summary, the present invention proposes a bionic design of a 3D printed high-security integrated fuze structure. By bionic designing the structure of the woodpecker's head with energy absorption, vibration reduction and impact resistance, the high safety of the fuze during production, assembly, transportation, and launch is achieved. At the same time, the manufacturing process is simple, and the integrated manufacturing of the fuze is achieved, which effectively solves the problem of large assembly errors, long production cycle and high cost caused by the need for manual assembly of internal parts in the original fuze.

[0049] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous technical features can be freely combined and superimposed.

[0050] The above are merely preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A biomimetic high-safety integrated fuze structure, characterized by: It comprises a shell (9) and an internal structure arranged in the shell (9), wherein the shell (9) and the internal structure are manufactured by integral molding; The housing (9) is a cylindrical structure; The internal structure comprises, from top to bottom, an upper plate (1), a lower plate (3), a support platform (6), a firing pin (7) and a detonator seat (8); the upper plate (1), the lower plate (3), the support platform (6), the firing pin (7) and the detonator seat (8) are all coaxially arranged with the outer shell (9); The upper plate (1) and the lower plate (3) are connected by a connecting column (2). The connecting column (2) draws on the energy absorption, vibration reduction and impact resistance principle of the beak sheath layer in the beak of a woodpecker. The number of the connecting columns (2) is at least two. The connecting columns (2) are curved as a whole, and their diameter gradually decreases from the middle to the two ends. The two ends of the connecting column (2) are respectively connected to the bottom surface of the upper plate (1) and the upper surface of the lower plate (3). The support platform (6) comprises a truncated cone structure, the interior of which is hollow to form a cavity, and the upper surface of the table is provided with a through hole, the outer edge of the bottom of the support platform (6) is connected to the inner wall of the shell (9), the upper part of the detonator seat (8) is connected to the interior of the cavity of the support platform (6), and the lower part of the detonator seat (8) is connected to the inner wall of the shell (9); The firing pin (7) is located below the lower plate (3), the top of the firing pin (7) is connected to the bottom surface of the lower plate (3), and the firing pin (7) passes through the through hole of the support platform (6); The lower plate (3) and the support platform (6) are connected via a first support column (4), the first support column (4) being based on the energy absorption, vibration reduction and impact resistance principle of the woodpecker's skull, the number of the first support columns (4) being at least two, the first support columns (4) being arranged at an angle, the upper end of which is connected to the bottom surface of the lower plate (3), and the lower end of which is connected to the side wall of the support platform (6); A second support column (5) is provided between the first support column (4) and the support platform (6). The second support column (5) is tilted, with its upper end connected to the first support column (4) and its lower end connected to the upper surface of the support platform (6).

2. The biomimetic high-safety integrated fuze structure according to claim 1 is characterized by: The number of the connecting columns (2) is 2-8, and the connecting columns (2) are evenly distributed around the circumference with the axis of the lower plate (3) as the center.

3. The biomimetic high-safety integrated fuze structure according to claim 2, characterized in that: The diameter of the middle portion of the connecting column (2) is 1-4 mm, and the diameter of the end portion of the connecting column (2) is 0.5-3 mm.

4. The biomimetic high-safety integrated fuze structure according to claim 3 is characterized by: The distance from the center of the middle section of the connecting column (2) to the axis of the overall structure of the fuze is 2-5 mm, and the distance from the center of the end section to the axis of the overall structure of the fuze is 1-3 mm.

5. The biomimetic high-safety integrated fuze structure according to claim 4 is characterized by: The first support columns (4) are evenly distributed around the circumference of the lower plate (3) with the axis as the center, and the number is 2-8. The diameter of the first support columns (4) is 0.5-3 mm, and the angle between the first support columns (4) and the axis of the fuse is 5°-45°.

6. The biomimetic high-safety integrated fuze structure according to claim 5, characterized in that: The distance from the edge of the lower plate (3) to the end of the corresponding connecting column (2) is less than or equal to 1 mm, and the angles between the side surfaces of the second supporting column (5) and the supporting platform (6) and the axis of the overall structure of the fuze are all less than or equal to 45 degrees.

7. The biomimetic high-safety integrated fuze structure according to any one of claims 1 to 6, characterized in that: An annular groove is provided at the connection between the lower portion of the detonator seat (8) and the inner wall of the shell (9). The radial cross section of the annular groove is semicircular. A plurality of through holes are provided at the bottom of the annular groove. The plurality of through holes are evenly distributed in the circumferential direction with the axis of the shell (9) as the center.

8. The biomimetic high-safety integrated fuze structure according to claim 7, characterized in that: The side wall of the shell (9) is provided with a circle of through holes at the level corresponding to the positions of the connecting column (2), the first supporting column (4) and the detonator seat (8). The number of through holes in each circle is 3-8 and is evenly distributed along the circumferential direction of the shell (9). The holes along the axis direction of the overall structure of the fuze are on different busbars of the cylindrical shell (9).

9. The biomimetic high-safety integrated fuze structure according to claim 8, characterized in that: The through hole on the side wall of the housing (9) is rhombus-shaped, with a side length of 1-5 mm and an acute angle of less than or equal to 45°.

10. The biomimetic high-safety integrated fuze structure according to claim 8, characterized in that: The through hole on the side wall of the housing (9) is teardrop-shaped.

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