Fuse device with miniaturized proximity detector and projectile body

Abstract

The utility model provides a fuze device with a miniaturized proximity detector and a projectile body, and the fuze device comprises an air cap with a hollow structure, a detachably connected base, and a proximity detector which is located in the hollow structure of the air cap and is fixedly connected to the upper part of the base, according to the proximity detector, the encapsulation shell used for fixedly placing the circuit board device is arranged, the circuit board device is fixed by pouring the encapsulation glue, and the maximum radial diameter of the encapsulation shell is matched with the radial inner diameter of the upper end part of the hollow structure of the hood, so that the miniaturization of the proximity detector is realized, and the reliability of the proximity detector is improved. The geomagnetic satellite navigation system is adaptively installed at the front position of the front end of a projectile body, more layout space is provided for high-performance design of a guide cabin where a detector is located and a rear cabin section, the power of the detector and the geomagnetic satellite navigation system is increased, and the detection distance, the anti-interference capability, the positioning precision and the signal strength are all greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of missile fuze, in particular to a fuze device with miniaturized near-sensing detector and a projectile body comprising the fuze device with miniaturized near-sensing detector. BACKGROUND

[0002] The missile fuze is a control system that uses environmental information and target information to control the warhead to detonate or activate the transmission sequence at the most favorable position or time relative to the target under predetermined conditions. The missile fuze system is composed of a detection sensor for detecting the target, a transmission sequence for detonating the warhead, and a safety mechanism for ensuring safety. The dynamic, instantaneous and one-time nature of the working process of the missile fuze system constitutes its main feature that distinguishes it from other systems of the missile. A missile fuze with good performance can not only ensure the safety of the warhead and the whole missile, but also enable the warhead to fully exert its power to damage the target.

[0003] With the development of science and technology, in modern new-type wars, various detection devices are introduced at the front end of the projectile body. Even without any guidance and end correction, the use of near-sensing detectors can effectively improve the off-target hit rate and killing effect.

[0004] Since the outer size of the front end of the projectile body is basically fixed according to the relevant series standards, the head wind cap space of the front end of the projectile body is limited.

[0005] At present, the circuit board device of the existing design near-sensing detector is fixed by screws and isolation columns, as shown in the screw 316 on the circuit board device of the existing design near-sensing detector. Figure 7 The screw head will undoubtedly occupy the radial size of the circuit board, resulting in an increase in the radial size of the near-sensing detector. Since the radial size of the wind cap head space of the front end of the projectile body is limited, the near-sensing detector can only be arranged to the rear end of the projectile fuze during installation, which occupies the layout space and weight distribution index of other cabin sections, resulting in limited layout space, weight and power design of the battery compartment, control cabin, rudder cabin, transmission and detonation sequence, warhead and other cabin sections, and further limiting the overall performance improvement and cost reduction and efficiency improvement of the projectile body. In addition, the existence of the screw head at the end face of the radio frequency board antenna will also affect the waveform distribution of the electromagnetic wave near-field region, resulting in beam distortion and signal blind area of the detector, which cannot meet the development trend requirements of miniaturization, high precision and high reliability of the detector.

[0006] Therefore, for those skilled in the art, there is an urgent need to develop a small-sized near-sensing detector fuze device with reasonable structure. Content of the utility model

[0007] In view of this, in order to solve or partially solve the above problems, this application provides a fuse device with a miniaturized proximity sensor. The proximity sensor is fixed by setting a potting shell for fixing the circuit board device and fixing the circuit board device by potting encapsulant. The maximum radial diameter of the potting shell is adapted to the radial inner diameter of the upper end of the hollow structure of the wind cap, thereby realizing the miniaturization of the proximity sensor. It is adapted to be installed at the front end of the projectile, thus solving a series of problems caused by unreasonable structural design of existing fuse devices.

[0008] To achieve the above objectives, one embodiment of this application provides a fuse device with a miniaturized proximity detector, specifically including a wind cap with a hollow structure, a base extending into the hollow structure of the wind cap and detachably connected to the wind cap, and a proximity detector located within the hollow structure of the wind cap and fixedly connected above the base. The proximity detector includes a circuit board device and a potting housing for fixing the circuit board device. The potting housing fixes the circuit board device by potting potting compound, and the bottom of the potting housing is fixedly connected above the base.

[0009] The maximum radial diameter of the potting shell is adapted to the radial inner diameter of the upper end of the hollow structure.

[0010] Furthermore, the potting housing includes a bottom and a peripheral sidewall extending upward along the peripheral edge of the bottom, the peripheral sidewall surrounding to form a receiving space for accommodating the circuit board device.

[0011] Furthermore, the inner wall surface of the peripheral sidewall forms the accommodating space, which has a small opening and a large interior.

[0012] Furthermore, the bottom of the potting housing is provided with threaded holes, potting holes and wire passage holes.

[0013] Furthermore, the circuit board device includes an RF board and an MCU board, with the RF board located above the MCU board and the two connected by a connector.

[0014] Furthermore, a male connector is provided at the bottom of the radio frequency board, and a female connector adapted to the male connector is provided at the top of the MCU board.

[0015] Furthermore, a geomagnetic coil is sandwiched between the proximity sensor and the base.

[0016] Furthermore, the base has an interface thread on the end away from the wind cap.

[0017] Furthermore, the base is a hollow cavity structure, and within the cavity structure, a battery compartment, a security mechanism, and an end cap are arranged sequentially from top to bottom.

[0018] Another embodiment of this application provides a projectile, including a fuze device, a servo compartment, a detonation sequence, a warhead, and a propulsion system, wherein the fuze device is the fuze device with a miniaturized proximity sensor described in any of the above embodiments.

[0019] Compared with the prior art, the advantages of this application are as follows:

[0020] The proximity sensor of this application's fuze device achieves miniaturization by setting a potting shell for fixing the circuit board device and fixing the circuit board device by potting glue. The maximum radial diameter of the potting shell is adapted to the radial inner diameter of the upper end of the hollow structure of the wind cap. This allows the proximity sensor to be installed at the front of the projectile, providing more layout space for the high-performance design of the guidance compartment and rear compartment where the sensor is located. For example, the battery capacity of the battery compartment can be increased to 2.35 times the original capacity, removing the original power consumption limitations of the sensor and geomagnetic satellite guidance system. This increases the power of the sensor and geomagnetic satellite guidance system, and significantly improves the detection range, anti-interference capability, positioning accuracy, and signal strength.

[0021] Meanwhile, this application eliminates the problems of detection beam distortion and signal blind zone defects caused by the use of screw heads to block the near-sensor by setting up a potting shell for fixing the circuit board device and fixing the circuit board device by potting potting glue, and avoids the radial dimension occupied by the screw, which is conducive to the realization of miniaturized products.

[0022] Furthermore, the maximum radial diameter of the encapsulated shell of the proximity sensor in this application is compatible with the radial inner diameter of the upper end of the hollow structure of the wind cap, thereby achieving miniaturization of the proximity sensor and improving the adaptability and versatility of different projectile types. In particular, a series of projectile types that were originally abandoned due to space constraints or small diameter can now be adapted to the miniaturized proximity sensor, thus enabling more small munitions to add proximity detection functionality. Attached Figure Description

[0023] The following figures are provided to further illustrate this application and form part of this application. They are intended only to illustrate and explain the present invention and are not intended to limit the scope of the present invention. In the figures:

[0024] Figure 1 This is a three-dimensional structural diagram of a fuze device with a miniaturized proximity sensor in an embodiment of this application;

[0025] Figure 2 forFigure 1 A cross-sectional schematic diagram of a fuse device with a miniaturized proximity sensor.

[0026] Figure 3 This is a cross-sectional view of the miniaturized proximity sensor in an embodiment of this application.

[0027] Figure 4 This is a three-dimensional structural diagram of the potting shell in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram showing the connection between the RF board and the MCU board of the circuit board device in this embodiment of the application via the connector 313.

[0029] Figure 6 This is a schematic diagram of the layout structure of components on an RF board in one embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the layout structure of components on an RF board in the prior art.

[0031] Figure 8 This is a schematic diagram of the structure of a projectile.

[0032] Figure label:

[0033] 1. Hood;

[0034] 2. Base; 20. Interface thread;

[0035] 3. Miniaturized proximity detector; 31. Circuit board components; 311. RF board; 312. MCU board; 313. Power strip connector; 3131. Male plug; 3132. Female socket; 314a. Transmitting antenna; 314b. Receiving antenna; 315. RF processing chip; 316. Screw; 32. Encapsulation housing; 320. Through hole; 321. Encapsulation hole; 322. Threaded hole; 323. Groove ring; 33. Encapsulating resin;

[0036] 4. Battery compartment;

[0037] 5. Security agencies;

[0038] 6. End caps;

[0039] 7. Geomagnetic coil;

[0040] 100. A fuse device with a miniaturized proximity sensor;

[0041] 200. Steering gear compartment;

[0042] 300. Detonation sequence;

[0043] 400. Warhead;

[0044] 500. Propulsion system. Detailed Implementation

[0045] The following drawings will disclose several embodiments of this application and provide a clear and complete description of the technical solution of this application. The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this utility model and do not constitute an improper limitation of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this application.

[0046] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can refer to a fixed connection, a detachable connection, or an integral part, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0048] See Figure 1 , Figure 2 As shown, this embodiment provides a fuse device 100 with a miniaturized proximity detector, specifically including a wind cap 1 with a hollow structure, a base 2 extending into the hollow structure of the wind cap 1 and detachably connected to the wind cap, and a proximity detector 3 located in the hollow structure of the wind cap and fixedly connected above the base 2. The proximity detector 3 includes a circuit board device 31 and a potting housing 32 for fixing the circuit board device 31. The potting housing 32 fixes the circuit board device 31 by potting potting glue 33, and the bottom of the potting housing 32 is fixedly connected above the base 2; wherein, the maximum radial diameter of the potting housing 32 is adapted to the radial inner diameter of the upper end of the hollow structure.

[0049] It should be noted that the wind cap 1 in this embodiment is a hollow shuttle-shaped structure, used for rectifying the fuse head, and has good transmission performance for electromagnetic waves. The inner wall at the bottom is provided with threads that are threaded to the base 2.

[0050] Combination Figure 5As shown, the circuit board device 31 of the proximity detector in this embodiment includes an RF board 311 and an MCU board 312. The RF board 311 is located above the MCU board 312, and the two are connected by a connector 313. The circuit board device is potted and fixed by injecting potting compound into the potting housing 32.

[0051] Further integration Figure 6 , Figure 7 Comparison shows that the circuit board device in this application embodiment, compared with the circuit board device in the prior art, eliminates the fixing screw 316. This reduces the radial dimension of the circuit board occupied by the screw 316, and also eliminates the problems of detection beam distortion and signal blind zone defects caused by the screw head blocking the circuit board. This is conducive to the realization of miniaturized products and improves the performance of the detector. In addition, it ensures that the maximum radial diameter of the potting shell 32 is matched with the radial inner diameter of the upper end of the hollow structure, so that the proximity detector is assembled close to the front end of the wind cap, which is conducive to the high-precision and high-reliability detection of the detector.

[0052] Using the technical solution of this embodiment, this application embodiment sets up a potting shell 32 for fixing the circuit board device 31, and fixes the circuit board device 31 by potting potting glue. The maximum radial diameter of the potting shell 32 is adapted to the radial inner diameter of the upper end of the hollow structure of the wind cap 1, thereby realizing the miniaturization of the proximity sensor. It is adapted to be installed at the front end of the projectile, which makes more layout space available for the high-performance design of the guidance cabin and the rear section where the sensor is located. This increases the power of the sensor and the geomagnetic satellite guidance system, and greatly improves the detection range, anti-interference ability, positioning accuracy and signal strength.

[0053] Combination Figure 3 , Figure 4 As shown, the potting housing 32 includes a housing bottom and a peripheral sidewall extending upward along the peripheral edge of the housing bottom, the peripheral sidewall forming a receiving space for accommodating the circuit board device. Further, as... Figure 3 As shown in the example, the longitudinal section of the accommodating space formed by the inner wall surface of the peripheral sidewall in this embodiment is trapezoidal, with a small opening and a large belly. The slope angle of the trapezoid is preferably, but not limited to, 10°, and can be set appropriately according to the actual situation. Of course, the accommodating space formed by the inner wall surface of the peripheral sidewall only needs to meet the anti-detachment function of the small opening and large belly structure, such as the common can-shaped inner arc surface structure, which also facilitates the potting and curing of circuit board devices and prevents them from falling out. The specific potting process is as follows: the circuit board device is installed into the potting shell, and the assembly joint between the circuit board device and the potting shell is sealed with sealant. After the sealant has cured, it is placed in a vacuum potting machine, and a certain amount of potting adhesive is poured in with the potting hole facing upwards. It is left to stand for 24 hours to cure, and then it enters the subsequent quality inspection process.

[0054] Furthermore, such as Figure 4 As shown, the bottom of the potting housing 32 is provided with a threaded hole 322 that is fixedly connected to the base, a potting hole 32 for potting potting compound 33 and a wire through hole 320 for passing through circuit board lines.

[0055] Furthermore, such as Figure 3 As shown, a groove ring 323 is provided laterally on the inner wall of the potting housing 32, and the potting adhesive can enter and solidify in the groove ring 323, further ensuring the potting and fixing of the circuit board components.

[0056] As a preferred implementation method, such as Figure 5 As shown, a male connector 3131 is provided below the radio frequency board 311, and a female connector 3132 adapted to the male connector 3131 is provided above the MCU board 312.

[0057] It should be noted that the male plug 3131 and the female socket 3132 adapted to the male plug 3131 included in this embodiment are commercially available conventional devices, and the detailed structure will not be described in detail here.

[0058] like Figure 2 As shown, a geomagnetic coil 7 is sandwiched between the potting housing 32 of the proximity sensor and the base 2. Utilizing Faraday's law of electromagnetic induction, the geomagnetic coil, as the fuze rotates during flight, cuts the Earth's magnetic field, generating an electromotive force (EMF). The magnitude of this EMF is related to the strength of the Earth's magnetic field, the number of turns of the coil, the area of ​​the coil, and the angular velocity of the fuze. By measuring this EMF, the rotational speed and state of the fuze can be indirectly measured.

[0059] like Figure 1 , Figure 2 As shown, the base 2 has an interface thread 20 on the end away from the wind cap 1. The base 2 is a hollow cavity structure, and within the cavity structure, from top to bottom, are arranged a battery compartment 4, a security mechanism 5, and an end cap 6. The battery compartment 4 is responsible for providing power to the geomagnetic coil, proximity detector, security mechanism, detonation sequence, and overall communication system. The battery compartment is fixed to the base by four countersunk screws evenly distributed around its circumference. The security mechanism is used to prevent accidental detonation during storage and transportation and premature detonation during launch, ensuring the absolute safety of the operating site. It is connected to the end cap by four screws at the bottom, and the end cap is connected to the base by threads. Then, the entire fuse device is connected to the adjacent section of the projectile body via interface threads.

[0060] like Figure 8As shown, another embodiment of this application provides a projectile, including a fuse device, a servo compartment 200, a detonation sequence 300, a warhead 400, and a propulsion system 500. The fuse device is the fuse device 100 with a miniaturized proximity detector described in any of the above embodiments. The propulsion system 500 includes an engine compartment. The specific structure and function of the servo compartment 200, the detonation sequence 300, the warhead 400, and the propulsion system 500 are prior art and will not be described in detail here.

[0061] In summary, the proximity sensor of this application's fuze device achieves miniaturization by using a potting shell for fixing the circuit board components and fixing them with potting compound. The maximum radial diameter of the potting shell matches the radial inner diameter of the upper part of the hollow structure of the wind cap. This allows for a more compact proximity sensor, which can be installed at the front of the projectile, providing more layout space for the high-performance design of the guidance compartment and rear sections where the sensor is located. Furthermore, it increases the battery capacity of the battery compartment to 2.35 times the original capacity, removing the original power consumption limitations of the sensor and geomagnetic satellite guidance system. This results in increased power of the sensor and geomagnetic satellite guidance system, significantly improving detection range, anti-interference capability, positioning accuracy, and signal strength.

[0062] Meanwhile, this application eliminates the problems of detection beam distortion and signal blind zone defects caused by the use of screw heads to block the near-sensor by setting up a potting shell for fixing the circuit board device and fixing the circuit board device by potting potting glue, and avoids the radial dimension occupied by the screw, which is conducive to the realization of miniaturized products.

[0063] Furthermore, the maximum radial diameter of the encapsulated shell of the proximity sensor in this application is compatible with the radial inner diameter of the upper end of the hollow structure of the wind cap, thereby achieving miniaturization of the proximity sensor and improving the adaptability and versatility of different projectile types. In particular, a series of projectile types that were originally abandoned due to space constraints or small diameter can now be adapted to the miniaturized proximity sensor, thus enabling more small munitions to add proximity detection functionality.

[0064] The foregoing description illustrates and describes preferred embodiments of this application. However, as previously understood, this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the conception herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A fuse device with a miniaturized proximity detector, characterized in that, include: The hood has a hollow structure; The base extends into the hollow structure of the hood and is detachably connected to the hood; The proximity sensor is located inside the hollow structure of the wind cap and is fixedly connected to the top of the base. Specifically, it includes a circuit board device and a potting shell for fixing the circuit board device. The potting shell fixes the circuit board device by potting potting compound, and the bottom of the potting shell is fixedly connected to the top of the base. The maximum radial diameter of the potting shell is adapted to the radial inner diameter of the upper end of the hollow structure.

2. The fuze device with a miniaturized proximity detector according to claim 1, characterized in that, The potting housing includes a bottom and a peripheral sidewall extending upward along the peripheral edge of the bottom, the peripheral sidewall surrounding to form a receiving space for accommodating the circuit board device.

3. The fuze device with a miniaturized proximity detector according to claim 2, characterized in that, The inner wall surface of the peripheral sidewall forms the accommodating space, which is small at the opening and large at the belly.

4. The fuze device with a miniaturized proximity detector according to claim 2, characterized in that, The bottom of the potting housing is provided with threaded holes, potting holes and wire passage holes.

5. The fuze device with a miniaturized proximity detector according to claim 1, characterized in that, The circuit board device includes an RF board and an MCU board, with the RF board located above the MCU board and the two connected by a connector.

6. The fuze device with a miniaturized proximity detector according to claim 5, characterized in that, A male connector is provided at the bottom of the radio frequency board, and a female connector adapted to the male connector is provided at the top of the MCU board.

7. The fuze device with a miniaturized proximity detector according to claim 1, characterized in that, A geomagnetic coil is sandwiched between the proximity sensor and the base.

8. The fuze device with a miniaturized proximity detector according to claim 1, characterized in that, The base has an interface thread on the end away from the wind cap.

9. The fuze device with a miniaturized proximity detector according to claim 1, characterized in that, The base is a hollow cavity structure, and within the cavity structure, from top to bottom, are arranged a battery compartment, a security mechanism, and an end cap.

10. A projectile body, comprising a fuse device, a servo compartment, a detonation sequence, a warhead, and a propulsion system, characterized in that, The fuze device is the fuze device with a miniaturized proximity detector as described in any one of claims 1-9.

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