A low-overload delay fuse mechanism

Abstract

The present invention relates to the technical field of weapon ammunition, and specifically to a low-overload delay insurance mechanism. The low-overload delay insurance mechanism includes: a seat body; a guide rod, which is installed on the seat body; and an insurance mechanism, which is located on the seat body and is slidably connected to the guide rod. Among them, the insurance mechanism includes a starting module and a delay control module; the starting module is respectively connected to the seat body and the guide rod, and is connected to the delay control module, and the starting module is also connected to an external ammunition security mechanism. The delay control module is fixedly connected to the seat body and is slidably connected to the guide rod. The low-overload delay insurance mechanism of the present invention has a novel structure, can withstand a large floating range of overload, has a small delay time dispersion range, and has the advantages of high safety, strong anti-interference ability, strong anti-vibration ability, and high movement reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of weapon ammunition, and specifically to a low-overload delay insurance mechanism. Background Art

[0002] The low-overload delay insurance mechanism is applied to the security mechanisms of high-overload ammunitions such as rockets and missiles. Among them, the mechanical clock mechanism is most widely used due to its high safety, strong anti-interference ability, wide timing range, high movement reliability and other characteristics.

[0003] At present, with the change of the modern war environment, weapon ammunition must be updated. One of them is the significant improvement in the missile maneuverability. The original clock mechanism can no longer meet the requirements. It is urgent to develop a clock with strong anti-lateral overload ability and strong anti-vibration ability. Therefore, in view of the above situation, it is urgent to develop a low-overload delay insurance mechanism to overcome the deficiencies in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-overload delay insurance mechanism to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A low-overload delay insurance mechanism, which includes:

[0007] A seat body;

[0008] A guide rod, which is installed on the seat body; and

[0009] An insurance mechanism, which is located on the seat body and is slidably connected to the guide rod. Among them, the insurance mechanism includes a starting module and a delay control module;

[0010] The starting module is respectively connected to the seat body and the guide rod, and is connected to the delay control module. Moreover, the starting module is also connected to the external ammunition security mechanism. The delay control module is fixedly connected to the seat body and is slidably connected to the guide rod.

[0011] As a further solution of the present invention: The delay control module includes:

[0012] An inertia block, which is sleeved on the guide rod through a movable cavity, and the movable cavity is opened on the inertia block;

[0013] A limiting groove, which is opened at the end of the inertia block;

[0014] Inertia spring, the inertia spring is installed between the inertia block and the seat body, wherein one end of the inertia spring is located in the limit groove, and the inertia spring is also sleeved on the guide rod; and

[0015] Elastic connection unit, the elastic connection unit is respectively connected with the inertia block and the starting module.

[0016] As a further solution of the present invention: the elastic connection unit includes:

[0017] Placement groove, the placement groove is opened on the inertia block and extends to the starting module;

[0018] Spring fixing pins, the number of the spring fixing pins is two, and the two spring fixing pins are respectively located at both ends of the placement groove; and

[0019] Pulling spring, both ends of the pulling spring are detachably connected with the spring fixing pins.

[0020] As a further solution of the present invention: the number of the movable cavities is two sets, and the two sets are respectively sleeved on the two guide rods, and the diameter of the movable cavity is larger than the diameter of the guide rod.

[0021] As a further solution of the present invention: the starting module includes:

[0022] Clock starting block, the clock starting block is sleeved on the guide rod and is slidably connected with the guide rod, and the clock starting block is also connected with the placement groove through the spring fixing pin;

[0023] Wherein, the mass of the clock starting block is smaller than the mass of the inertia block;

[0024] Safety pin, the safety pin is fixedly installed on the clock starting block and is connected with an external ammunition security mechanism; and

[0025] Timing unit, the timing unit is respectively connected with the seat body and the clock starting block.

[0026] As a further solution of the present invention: the timing unit includes:

[0027] Rack, one end of the rack is fixedly connected with the clock starting block; and

[0028] Clock, the clock is located on the seat body and is connected with the rack.

[0029] As a further solution of the present invention: further includes: steel balls, the steel balls are located between the seat body and the inertia block, and the number of the steel balls is several, and the several steel balls are symmetrically installed on both sides of the inertia block; and

[0030] A ball blocking plate, the number of the ball blocking plates is two, and the two ball blocking plates are respectively located on both sides of the seat body and are connected to the steel ball.

[0031] As a further scheme of the present invention: both the seat body and the ball blocking plate are made of materials with high strength and wear resistance, the inertia block is made of a metal material with high density, and the clock starting block is made of a metal material with low density or a non-metal material.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] 1. As a safety mechanism in ammunition products, the present invention can sense the launch overload of ammunition. Under the action of the launch overload, the safety mechanism delays the release of the restraint on the safety part, playing the role of muzzle safety. It is mainly applied to low-overload ammunition such as rockets and ballistic missiles. In the normal non-launch state, the safety mechanism is in the safety position. During the launch process, the safety mechanism senses the longitudinal launch overload in the active section of the ammunition. Through the set delay control module, the starting module can be in the position of releasing the safety after a certain delay. During use, not only can the timing time be adjusted through the set delay control module, but also when it can withstand a large floating range of overload, the delay time dispersion range is small, and it has the advantages of high safety, strong anti-interference ability, strong anti-vibration ability, and high movement reliability.

[0034] 2. Through the rolling of the steel ball, the friction force is greatly reduced, and the anti-lateral overload and anti-vibration abilities are enhanced.

[0035] 3. In addition to adjusting the timing time by adjusting the clock, the timing time can also be adjusted by adjusting the mass of the inertia block, the resistance of the tension spring, and the movement stroke of the clock starting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic cross-sectional structure diagram of the low-overload delay safety mechanism in the embodiment of the present invention.

[0037] Figure 2 It is a schematic structure diagram of the inertia block part in the embodiment of the present invention.

[0038] Figure 3 It is a schematic structure diagram of the clock part in the embodiment of the present invention.

[0039] Figure 4 It is a schematic structure diagram of the safety pin part in the embodiment of the present invention.

[0040] In the figure: 1 - base body, 2 - guide rod, 3 - ball blocking plate, 4 - steel ball, 5 - rack, 6 - clock, 7 - inertia spring, 8 - tension spring, 9 - tension spring fixing pin, 10 - clock starting block, 11 - inertia block, 12 - safety pin, 13 - movable cavity, 14 - limiting groove, 15 - placing groove. Detailed implementation mode

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0042] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0043] Please refer to Figures 1-4 , a low-overload delay insurance mechanism provided by an embodiment of the present invention, the low-overload delay insurance mechanism includes:

[0044] Base body 1;

[0045] Guide rod 2, the guide rod 2 is installed on the base body 1; and

[0046] An insurance mechanism, the insurance mechanism is located on the base body 1 and is slidably connected to the guide rod 2, wherein the insurance mechanism includes a starting module and a delay control module;

[0047] The starting module is respectively connected to the base body 1 and the guide rod 2, and is connected to the delay control module, and the starting module is also connected to an external ammunition security mechanism, the delay control module is fixedly connected to the base body 1 and is slidably connected to the guide rod 2.

[0048] As an insurance mechanism in ammunition products, the present invention can sense the launch overload of ammunition. Under the action of the launch overload, the insurance mechanism delays the release of the restraint on the insurance part, playing the role of muzzle insurance. It is mainly applied to low-overload ammunition such as rockets and ballistic missiles. When in the non-launch state usually, the insurance mechanism is in the insurance position. During the launch process, the insurance mechanism senses the longitudinal launch overload in the active section of the ammunition. Through the set delay control module, the starting module can be in the position of releasing the insurance after a certain delay. During use, not only can the timing time be adjusted through the set delay control module, but also when it can withstand a large floating range of overload, the delay time dispersion range is small, and it has the advantages of high safety, strong anti-interference ability, strong anti-vibration ability and high movement reliability, etc., and is worthy of promotion.

[0049] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 , the delay control module includes:

[0050] An inertia block 11, the inertia block 11 is sleeved on the guide rod 2 through a movable cavity 13, and the movable cavity 13 is opened on the inertia block 11;

[0051] A limiting groove 14, the limiting groove 14 is opened at the end of the inertia block 11;

[0052] An inertia spring 7, the inertia spring 7 is installed between the inertia block 11 and the seat body 1. Wherein, one end of the inertia spring 7 is located in the limiting groove 14, and the inertia spring 7 is also sleeved on the guide rod 2, and is guided by the guide rod 2; and

[0053] An elastic connection unit, the elastic connection unit is respectively connected to the inertia block 11 and the start module.

[0054] Please refer to Figure 1 , the elastic connection unit includes:

[0055] A placement groove 15, the placement groove 15 is opened on the inertia block 11 and extends to the start module;

[0056] Two tension spring fixing pins 9, the number of the tension spring fixing pins 9 is two, and the two tension spring fixing pins 9 are respectively located at both ends of the placement groove 15; and

[0057] A tension spring 8, both ends of the tension spring 8 are detachably connected to the tension spring fixing pins 9.

[0058] Please refer to Figure 1 , the number of the movable cavities 13 is two sets, and they are respectively sleeved on the two guide rods 2, and the diameter of the movable cavity 13 is larger than the diameter of the guide rod 2. Wherein, the guide rod 2 respectively rubs against the clock start block 10 and the inertia spring 7 and does not rub against the inertia block 11.

[0059] Please refer to Figures 1-4 , the start module includes:

[0060] A clock start block 10, the clock start block 10 is sleeved on the guide rod 2 and is slidably connected to the guide rod 2, and the clock start block 10 is also connected to the placement groove 15 through the tension spring fixing pin 9;

[0061] Wherein, the mass of the clock start block 10 is much smaller than the mass of the inertia block 11;

[0062] Safety pin 12, which is fixedly installed on the clock starting block 10 and connected to an external ammunition safety mechanism, is used to secure safety components such as sliders and rotors in the ammunition safety mechanism; and

[0063] A timing unit, which is respectively connected to the seat body 1 and the clock starting block 10.

[0064] The timing unit includes: a rack 5, one end of the rack 5 is fixedly connected to the clock starting block 10 and is used to drive the clock 6 to operate; and

[0065] A clock 6, which is located on the seat body 1 and is connected to the rack 5.

[0066] In the normal non-firing state, under the resistance of the inertia spring 7, the inertia block 11 and the clock starting block 10 are located at one end of the seat body 1, and the safety pin 12 on the clock starting block 10 is in the safety position;

[0067] During the firing process, both the inertia block 11 and the clock starting block 10 sense the longitudinal firing overload in the active section of the ammunition. Since the mass of the inertia block 11 is much larger than that of the clock starting block 10, and the clock starting block 10 is connected to the clock 6 through the rack 5, the inertia block 11 moves downward and reaches the other end of the seat body 1 first, and the tension spring 8 is stretched. At this time, the clock starting block 10 is under the combined action of the longitudinal overload force and the resistance of the tension spring 8, and drives the clock 6 to reach the other end of the seat body 1 after a certain delay. At this time, the safety pin 12 on the clock starting block 10 is in the de-safety position;

[0068] Since the mass of the clock starting block 10 is relatively light and the force it receives under low overload is small, and the clock is mainly driven by the tension of the tension spring 8 for timing, the dispersion error of the clock timing can still be ensured to be small when the firing overload fluctuation range is large.

[0069] In addition, when it is necessary to finely adjust the delay time, it can be achieved by adjusting the length of the tension spring 8 hanging between the tension spring fixing pins 9 or replacing the tension spring 8 with different tensions;

[0070] According to specific requirements, when the clock starting block 10 moves to the de-safety position, a locking mechanism can also be added to lock it to prevent the clock starting block 10 from returning to the safety position under the resistance of the inertia spring 7 after the longitudinal firing overload disappears. This will not be elaborated here.

[0071] In an embodiment of the present invention, please refer to Figure 1 and Figure 3 , it further includes: steel balls 4, the steel balls 4 are located between the seat body 1 and the inertia block 11, and the number of the steel balls 4 is several, and several steel balls 4 are symmetrically installed on both sides of the inertia block 11; and

[0072] A ball blocking plate 3, the number of the ball blocking plates 3 is two, the two ball blocking plates 3 are respectively located on both sides of the seat body 1 and are connected to the steel ball 4 for limiting the steel ball 4.

[0073] Please refer to Figure 1 , both the seat body 1 and the ball blocking plate 3 are made of materials with high strength and wear resistance, the inertia block 11 is made of a metal material with a relatively large density, and the clock starting block 10 is made of a metal material with a relatively small density or a non-metal material.

[0074] During the launching process, if the ammunition is subjected to a large lateral overload, due to the displacement generated between the inertia block 11 and the seat body 1 through the rolling of the steel ball 4, and the rolling friction is small, it can ensure that the inertia block 11 can still move reliably under a large lateral overload. Moreover, when the entire safety mechanism undergoes long-term vibration and wear, the movement reliability of the rolling fit formed by the steel ball 4, the inertia block 11, and the seat body 1 is much higher than that of the old-fashioned sliding fit;

[0075] Among them, the steel ball 4 is located between the seat body 1 and the inertia block 11, rolls in the limit groove of the seat body 1 and the spherical groove of the inertia block 11, and is installed symmetrically left and right. When the inertia block 11 moves, displacement is generated between the inertia block 11 and the seat body 1 through the rolling of the steel ball 4.

[0076] To sum up, as a safety mechanism in ammunition products, the present invention can sense the launching overload of the ammunition. Under the action of the launching overload, the safety mechanism delays the release of the restraint on the safety component, playing the role of muzzle safety. It is mainly applied to low-overload ammunition such as rockets and ballistic missiles. When in the non-launch state usually, the safety mechanism is in the safety position. During the launching process, the safety mechanism senses the longitudinal launching overload in the active section of the ammunition. Through the set delay control module, the starting module can be in the position of releasing the safety after a certain delay. During the use process, not only can the timing time be adjusted through the set delay control module, but also when it can withstand a large floating range of overload, the delay time dispersion range is small, and it has the advantages of high safety, strong anti-interference ability, strong anti-vibration ability, and high movement reliability.

[0077] It should be noted that in the present invention, unless otherwise clearly specified and limited, terms such as "sliding", "rotating", "fixing", "provided with" should be understood in a broad sense. For example, it can be a welded connection, a bolt connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0078] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-overload delay fuse mechanism, characterized in that, The low-overload delay fuse mechanism includes: A seat body; A guide rod, which is installed on the seat body; and A fuse mechanism, which is located on the seat body and is slidably connected to the guide rod. Among them, the fuse mechanism includes a starting module and a delay control module; The starting module is respectively connected to the seat body and the guide rod, and is connected to the delay control module. Moreover, the starting module is also connected to an external ammunition security mechanism. The delay control module is fixedly connected to the seat body and is slidably connected to the guide rod; The delay control module includes: An inertia block, which is sleeved on the guide rod through an activity cavity, and the activity cavity is opened on the inertia block. Among them, the number of the activity cavities is two sets, and they are respectively sleeved on two of the guide rods; A limit groove, which is opened at the end of the inertia block; An inertia spring, which is installed between the inertia block and the seat body. One end of the inertia spring is located in the limit groove, and the inertia spring is also sleeved on the guide rod; and An elastic connection unit, which is respectively connected to the inertia block and the starting module; The elastic connection unit includes: A placement groove, which is opened on the inertia block and extends to the starting module; Two tension spring fixing pins, and the two tension spring fixing pins are respectively located at both ends of the placement groove; and A tension spring, and both ends of the tension spring are detachably connected to the tension spring fixing pins; The starting module includes: A clock starting block, which is sleeved on the guide rod and is slidably connected to the guide rod. Moreover, the clock starting block is also connected to the placement groove through the tension spring fixing pin; Among them, the mass of the clock starting block is less than the mass of the inertia block; A safety pin, which is fixedly installed on the clock starting block and is connected to an external ammunition security mechanism; and A timing unit, which is respectively connected to the seat body and the clock starting block.

2. The low-overload delay fuse mechanism according to claim 1, characterized in that, The diameter of the activity cavity is greater than the diameter of the guide rod.

3. The low-overload delay fuse mechanism according to claim 2, wherein, The timing unit includes: A rack, one end of which is fixedly connected to the clock starting block; and A clock, which is located on the seat body and is connected to the rack.

4. The low-overload delay insurance mechanism according to claim 3, characterized in that, It also includes: Steel balls, which are located between the seat body and the inertia block, and the number of the steel balls is several. The several steel balls are symmetrically installed on both sides of the inertia block; And Two ball blocking plates, and the two ball blocking plates are respectively located on both sides of the seat body and are connected to the steel balls.

5. The low-overload delay fuse mechanism according to claim 4, wherein Both the seat body and the ball blocking plates are made of materials with high strength and wear resistance. The inertia block is made of a metal material with a large density. The clock starting block is made of a metal material with a small density or a non-metal material.

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