Safety device suitable for miniature remote control electromechanical fuze

Abstract

The safety device comprises a sliding seat and a cover plate, an electric ignition head is arranged at the bottom of the sliding seat, and the electric ignition head is connected into a circuit; a cavity is formed between the cover plate and the sliding seat, and a sliding part capable of sliding along the cavity is arranged in the cavity; a locking mechanism is installed in the cavity, and sliding of the sliding component is locked through the locking mechanism. The sliding member shorts the circuit, and when the sliding member slides, the sliding member is disconnected from the circuit. According to the device, sliding of the sliding component is controlled through the locking mechanism, it is ensured that the sliding component cannot slide accidentally when locking is not unlocked, and therefore a circuit is in a short-circuit state continuously, and the safety of the device is improved; through short circuit between the sliding part and the circuit, the state change of converting the circuit from short circuit to conduction is bound with the sliding of the sliding part, so that the conduction state of the circuit can be controlled through the locking mechanism.

Description

Technical Field

[0001] The invention relates to a safety device, in particular to a safety device suitable for a micro remote-controlled electromechanical fuze. Background Art

[0002] The micro-cluster UAV ammunition fuze is mainly used for micro-cluster UAV ammunition to ensure the safety of ammunition during storage, service handling, testing and use, and to detonate the warhead charge in time during combat to effectively destroy the target. Since both signals are remotely controlled, a mechanical structure is required as an actuator and as an on-off switch of the control circuit to ensure safety and correctness of the function.

[0003] In addition, the micro UAV fuze also needs to meet the requirements of miniaturization. That is, in a limited space, it is necessary to ensure the explosion-proof safety of the mechanical structure and take into account the on-off switch function of the circuit to meet the needs of miniaturized and lightweight UAV fuzes. Summary of the invention

[0004] The present invention is made in view of the above-mentioned problems, and its purpose is to provide a safety device suitable for a micro remote-controlled electromechanical fuze, which can realize the linkage of explosion-proof and circuit on-off and has high safety.

[0005] Specifically, the first aspect of the present application provides a safety device suitable for a micro remote-controlled electromechanical fuze, comprising a slide and a cover plate, wherein an electric ignition head is provided at the bottom of the slide, and the electric ignition head is connected to the circuit; a cavity is provided between the cover plate and the slide, and a sliding component that can slide along the cavity is provided in the cavity; a locking mechanism is installed in the cavity, and the sliding of the sliding component is locked by the locking mechanism; the sliding component is short-circuited with the circuit, and when the sliding component slides, its connection with the circuit is disconnected.

[0006] According to a technical solution of a safety device applicable to a micro remote-controlled electromechanical fuze of the present invention, at least the following beneficial effects are achieved:

[0007] The device controls the sliding of the sliding component through a locking mechanism to ensure that the sliding component will not slide accidentally when the lock is not released, thereby keeping the circuit in a short-circuit state and improving the safety of the device; by short-circuiting the sliding component with the circuit, the state change of the circuit from short circuit to conduction is bound to the sliding of the sliding component, and the conduction state of the circuit can be controlled by the locking mechanism.

[0008] In some specific embodiments of the present invention, the sliding component includes a slider, which is elastically connected to one end of the cavity through a sliding spring. When the locking mechanism is unlocked, the slider slides in the cavity under the elastic force of the sliding spring. This design can prevent the slider from accidentally moving during operation, thereby further improving safety and avoiding safety accidents caused by misoperation.

[0009] In some specific embodiments of the present invention, a detonator is provided inside the slider, and a booster charge is provided on the top of the cover plate.

[0010] In some specific embodiments of the present invention, when the slider slides to the extreme position, the electric ignition head, the detonator and the explosive transfer sequence of the booster are in an aligned state. The position of the detonator is controlled by the movement of the slider, so that the detonation sequence of the detonator and the booster is aligned, which simplifies the structure of the detonation device, reduces the components that need to be controlled separately, and improves the reliability and maintainability of the overall device.

[0011] In some specific embodiments of the present invention, one end of the sliding block different from the sliding spring is elastically connected to a detection cap via a detection spring.

[0012] In some specific embodiments of the present invention, the cover plate is provided with a cover plate hole adapted to the detection cap. When the slide does not reach the limit position, the cover plate forms an upper limit for the detection cap, and the detection cap is always in a state of abutting against the cover plate. When the slide moves to the limit position, the detection cap will bounce into the cover plate hole under the elastic force of the detection spring, and the position of the slider is locked again.

[0013] In some specific embodiments of the present invention, the locking mechanism includes an electric ignition tube and a shear column, the electric ignition tube abuts against the shear column, and the shear column is fixed in the cavity by a shear pin.

[0014] In some specific embodiments of the present invention, a steel ball is provided between the shear column and the slider, and the front end of the slider has a slope, and the sliding of the slider is locked by the abutment between the steel ball and the slope. The electric ignition tube starts to work after receiving a signal, and the driving force generated by the combustion of gunpowder prompts the shear column to shear off the shear pin. After the lock on the position of the steel ball is removed, the steel ball also releases the lock on the slider component.

[0015] In some specific embodiments of the present invention, the circuit includes a circuit board and a conversion switch, the conversion switch is electrically connected to the electric ignition head, and two wires of the conversion switch are connected to the two ends of the detonation sequence electric ignition head and are connected to the circuit at the same time.

[0016] In some specific embodiments of the present invention, the circuit board is installed at the bottom of the slide, and an insulating plate is provided between the circuit board and the slide to prevent the solder joints on the circuit board from contacting the metal slide and causing a short circuit in the circuit board.

[0017] In some specific embodiments of the present invention, the slider is connected to a short-circuit plate. When the slider is in an initial state, the metal contacts on the short-circuit plate contact the spring pins in the conversion switch. When the short-circuit plate maintains contact with the spring pins on the switch, the electric ignition head is always in a short-circuit state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 It is a horizontal section of the present invention in an assembled state;

[0020] Figure 2 A vertical section of the present invention in an assembled state;

[0021] Figure 3 It is a vertical section of the present invention in the aligned state.

[0022] Explanation of the accompanying symbols: 1. Cover plate; 2. Sliding block; 3. Explosive charge; 4. Sliding seat; 5. Circuit board; 6. Detection spring; 7. Detection cap; 8. Detonator; 9. Sliding spring; 10. Electric ignition head; 11. Locking mechanism; 12. Steel ball; 13. Shear pin; 14. Shear column; 15. Electric ignition tube; 16. Short-circuit board; 17. Conversion switch; 18. Insulating board; 19. Manual pull pin.

[0023] The purpose, features and advantages of this figure will be further described in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0025] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0026] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0027] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0028] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0029] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0030] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0031] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the common meanings understood by persons with ordinary skills in the technical field to which this application belongs. The words "a", "an", "a safety device suitable for a micro remote-controlled electromechanical fuse", "the" and the like used in this application do not indicate quantity restrictions and may indicate the singular or plural.

[0032] The words "connected", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. The character " / " generally indicates that the objects associated with each other are an "or" relationship of a safety device suitable for a micro remote-controlled electromechanical fuse. The terms "first", "second", "third" and the like involved in this application are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0033] In the present application, the electric ignition head 10 and the conversion switch 17 are both connected to the circuit board 5, and the electric ignition head 10 is controlled by sending an electrical signal to the circuit board 5; and the electric ignition tube 15 is controlled by a separate electrical signal, and the shear column 14 is unlocked by connecting an electrical signal to the electric ignition tube 15.

[0034] like Figure 1 As shown, a safety device suitable for a micro remote-controlled electromechanical fuze comprises a slide 4, a cover plate 1, an electric ignition head 10 and explosive charge 3. A cavity is provided between the cover plate 1 and the slide 4, a slide block 2 which can slide along the cavity is provided in the cavity, the electric ignition head 10 is mounted on the bottom of the slide 4 and connected to a circuit board 5 below the slide 4, the explosive charge 3 is arranged in the middle of the cover plate 1, a detonator 8 is connected to the tail end of the slide block 2, when the slide block 2 slides to the extreme position, the detonation sequence of the electric ignition head 10, the detonator 8 and the explosive charge 3 is in an aligned state, at this time, the electric ignition head 10 can be controlled by the circuit to detonate the detonator 8 and the explosive charge 3 in sequence.

[0035] In order to further improve safety and ensure the safety of service transportation, such as Figure 2 As shown, in this embodiment, an electric ignition tube 15 is provided in the cavity, and the electric ignition tube 15 is abutted against the shear column 14. The shear column 14 is fixed in the cavity by a shear pin 13. A channel is provided in the cavity, and a steel ball 12 that can move along the channel is provided in the channel. The front end of the slider 2 has a 45° inclined surface. When the slider 2 is in the initial state, the steel ball 12 is just stuck between the shear column 14 and the inclined surface of the slider 2. If the slider 2 wants to slide, it must push the steel ball 12 to slide into the channel, and the shear column 14 can prevent the steel ball 12 from sliding into the channel, locking the position of the slider 2, so that when the electric ignition tube 15 does not receive a signal, the explosion transmission sequence is in a flameproof state. In addition, the slider 2 is connected to one end of the cavity through the sliding spring 9, and the electric ignition tube 15 starts to work after receiving the signal. Under the driving force generated by the combustion of gunpowder, the shear column 14 is prompted to shear the shear pin 13. After the lock on the position of the steel ball 12 is removed, the slider 2 slides in the cavity under the action of the sliding spring 9.

[0036] Furthermore, a short-circuit plate 16 is installed on the slider 2, and a metal contact connected to the conversion switch 17 is provided on the short-circuit plate 16. The conversion switch 17 is connected to the circuit board 5. When the slider 2 is in the initial state, the spring pin on the conversion switch 17 contacts the metal contact on the short-circuit plate 16, so that the circuit is in a short-circuit state. At this time, the electric ignition head 10 cannot be detonated, ensuring the safety of service processing. When the slider 2 starts to slide, the short-circuit plate 16 is no longer in contact with the conversion switch 17. At this time, the electric ignition head 10 is no longer in a short-circuit state and can receive the next electrical signal and detonate at any time.

[0037] Preferably, the spring pin in the conversion switch 17 can freely expand and contract within a certain range. When the locking of the steel ball 12 by the shear column 14 is not released, the change of the position of the short-circuit plate 16 caused by any error of the slider 2 will not affect the contact between the spring pin and the short-circuit plate 16.

[0038] In the above embodiment, when the slider 2 slides under the force of the sliding spring 9, since the stretching distance of the sliding spring 9 is limited, when the sliding spring 9 is stretched to the extreme by the slider 2, the stretching force generated by the sliding spring 9 will cause the slider 2 to rebound. Therefore, in this embodiment, a detection cap 7 is installed at one end of the slider 2. Figure 3 As shown, the detection cap 7 is installed in one of the holes of the slider 2 through the detection spring 6, and a cover plate hole adapted thereto is opened on the cover plate 1, and the diameter of the cover plate hole is larger than the diameter of the detection cap 7. When the slide does not reach the limit position, the cover plate 1 forms an upper limit for the detection cap 7, and the detection cap 7 is always in a state of abutting against the cover plate 1. When the slide moves to the limit position, the detection cap 7 will be bounced into the cover plate hole under the elastic force of the detection spring 6, and the position of the slider 2 is locked again, thereby preventing the slider 2 from rebounding.

[0039] Preferably, in order to prevent the solder joints on the circuit board 5 from contacting the metal slide 4 and causing a short circuit in the circuit board 5, an insulating plate 18 is provided between the circuit board 5 and the slide 4. The solder joints on the circuit board 5 are separated from the slide 4 by the insulating plate 18 to prevent the circuit board 5 from short circuiting.

[0040] The safety device provided in the embodiment of the present application works as follows:

[0041] During the service and transportation stage, the movement of the slider 2 can be blocked by a manual pull pin 19 for disconnecting the circuit, which ensures that the circuit is disconnected and the explosion sequence is in a flameproof state. When the pull pin is pulled out, the fuse is completely controlled by the electrical signal. After receiving the first release electrical signal, the electric ignition tube 15 of the locking mechanism 11 starts to work. Under the driving force of the gunpowder, the shear column 14 is prompted to cut the shear pin 13. After removing the lock on the position of the steel ball 12, the steel ball 12 also releases the lock on the slider 2. At this time, the slider 2 is pushed by the sliding spring 9 to move to the other end of the cavity. After moving to the extreme position, the detection cap 7 pops out into the cover plate hole under the elastic force of the detection spring 6. At this time, the position of the slider 2 is locked again. The short-circuit plate 16 connected to the slider 2 is also away from the conversion switch 17 at this time, and the metal contacts provided on the short-circuit plate 16 are no longer in contact with the spring pins in the conversion switch 17. At this time, the detonation sequence of the electric ignition head 10, the detonator 8 and the explosive charge 3 is in an aligned state, and the electric ignition head 10 is no longer in a short-circuit state. After being connected to the circuit, it can receive the next electrical signal and detonate at any time.

[0042] It should be noted that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and the same effect as the technical solution of the present application are all included in the technical scope of the present invention. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art are applied to the embodiments, and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A safety device suitable for a micro remote-controlled electromechanical fuze, characterized in that: It comprises a slide seat (4) and a cover plate (1), An electric ignition head (10) is provided at the bottom of the slide seat (4), and the electric ignition head (10) is connected to the circuit; a cavity is provided between the cover plate (1) and the slide seat (4), and a sliding component that can slide along the cavity is provided in the cavity; A locking mechanism (11) is installed in the cavity, and the sliding of the sliding component is locked by the locking mechanism (11); The sliding component is short-circuited with the circuit, and when the sliding component slides, the connection with the circuit is disconnected.

2. The safety device according to claim 1, characterized in that: The sliding component comprises a sliding block (2), and the sliding block (2) is elastically connected to one end of the cavity via a sliding spring (9).

3. The safety device according to claim 2, characterized in that: A detonator (8) is arranged inside the slider (2), and a booster charge (3) is arranged on the top of the cover plate (1).

4. The safety device according to claim 3, characterized in that: When the slide block (2) slides to the extreme position, the detonation sequence of the electric ignition head (10), the detonator (8) and the booster charge (3) is in an aligned state.

5. The safety device according to claim 2, characterized in that: One end of the slider (2) that is different from the sliding spring (9) is elastically connected to a detection cap (7) via a detection spring (6).

6. The safety device according to claim 5, characterized in that: The cover plate (1) is provided with a cover plate hole matched with the detection cap (7); when the slider (2) slides to the extreme position, the detection cap (7) is engaged with the cover plate hole.

7. The safety device according to claim 2, characterized in that: The locking mechanism (11) comprises an electric ignition tube (15) and a shearing column (14); the electric ignition tube (15) is in abutment with the shearing column (14); and the shearing column (14) is fixed in the cavity by a shearing pin (13).

8. The safety device according to claim 7, characterized in that: A steel ball (12) is provided between the shear column (14) and the slider (2); the front end of the slider (2) has an inclined surface, and the sliding of the slider (2) is locked by the abutment between the steel ball (12) and the inclined surface.

9. The safety device according to claim 2, characterized in that: The circuit comprises a circuit board (5) and a conversion switch (17), and the conversion switch (17) is electrically connected to an electric ignition head (10).

10. The safety device according to claim 9, characterized in that: The slider (2) is connected to a short-circuit plate (16); when the slider (2) is in an initial state, a metal contact on the short-circuit plate (16) contacts a spring pin in a conversion switch (17).

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