Pin pusher safety structure with fault safety and mistake proofing characteristics
By designing a safety structure for the pusher and utilizing a mechanical safety mechanism to prevent accidental release of the fuse, the problems of high cost and susceptibility to interference with electric and electromagnetic pin pullers for pyrotechnic devices are solved, thus improving the safety and reliability of the fuse system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING HUAXING ELECTROMECHANICAL CO LTD
- Filing Date
- 2024-12-30
- Publication Date
- 2026-05-08
AI Technical Summary
In existing fuse systems, electric detonator and electromagnetic detonator are characterized by high cost, large size, and susceptibility to interference, resulting in insufficient safety and making it difficult to meet the requirements of low cost and high safety.
A pusher safety structure is designed, including a fail-safe pin, a lug, a pusher, a spring, a steel ball, and a safety pin. The mechanical safety mechanism ensures that the safety pin protrudes from the outer circle after release. Combined with the synergistic effect of the pusher and the fail-safe pin, it prevents accidental release of the safety and enhances security.
It achieves ballistic safety in the event of circuit malfunction, prevents premature disarming of the fuze, improves the safety and reliability of the fuze system, and reduces costs.
Smart Images
Figure CN224215969U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fuse technology, specifically relating to a pusher safety structure with fail-safe and error-proof characteristics. Background Technology
[0002] With the development of weapon systems, higher requirements have been placed on the safety of fuses. Ammunition fuses not only require a safety system to ensure safety during operational handling and before the safety release delay, but also to prevent the detonation sequence from being triggered prematurely during the ammunition's flight trajectory before its normal engagement with the target, even if the fuse system is interfered with and gives an early detonation signal. This has led to the evolution from traditional launch-based safety systems to target-based safety systems. Traditional fuses belong to launch-based safety systems; as long as the launch environment is correct and the ammunition exceeds the safe distance, the safety system can release the safety, regardless of the existence of the target (or target area) or the relative distance between the projectile and the target. Target-based safety systems, on the other hand, will not release the safety unless a definite target (or target area) signal exists beyond the safe distance. Therefore, when designing a fuse, it is necessary not only to utilize the launch environment as a release condition but also to add a controllable safety mechanism that can release the safety in a timely manner based on target information, sensor information, and setting information. This controllable safety mechanism, which identifies and judges information before transmitting it to the fuse safety system, achieves separation between sensing fuse information and the release action.
[0003] Since controllable safety devices typically rely on sensors for identification and cannot directly utilize environmental energy, a "sensor + control circuit + actuator" model is usually employed. Highly reliable sensors, combined with signal processing and identification circuits, and an actuator converts the safety release information into mechanical motion, thus controlling the safety status of the mechanical isolator. Currently, electro-pneumatic pin pullers and electromagnetic pin pullers are mainly used. Electro-pneumatic pin pullers utilize the high temperature and high pressure gas generated by the ignition element and its charge to retract the safety pin, completing the pin pull function. Electromagnetic pin pullers utilize the principle of electromagnetic conversion; by applying current, electromagnetic force attracts the safety pin, which overcomes spring resistance and moves upward, thereby releasing the explosion-proof component and achieving the purpose of releasing the safety. Electro-pneumatic pin pullers are relatively expensive, increasing the cost of the fuse and hindering low-cost development. Electromagnetic pin pullers are also expensive due to their larger size and the lack of a self-locking design on the safety pin. They are generally not used in ordinary grenade platforms. Furthermore, the use of electro-pneumatic pin pullers and electromagnetic pin pullers carries the possibility of premature safety release due to unexpected interference, which can affect the safety of the fuse system. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The technical problem to be solved by this utility model is to provide a sales agent insurance structure with fail-safe and error-proof characteristics to solve the problems existing in the prior art.
[0006] (II) Technical Solution
[0007] To solve the above-mentioned technical problems, this utility model provides a pusher safety structure with fail-safe and error-proof characteristics, including: a fail-safe pin 1, a support lug 2, a pusher 3, a spring 4, a steel ball 5, a safety pin 6, and an explosion-proof component 7.
[0008] One end of the fault safety pin 1 is inserted into the explosion-proof component 7 of the safety system, and the other end is connected to the pusher 3 via the lug 2;
[0009] The safety pin 6 has one end of the explosion-proof component 7 and the other end placed on the outer circle of the safety system. The safety pin 6 has an annular groove, and a steel ball 5 is placed in the groove. The steel ball 5 abuts against the fault safety pin 1 above.
[0010] The safety pin 6 is externally fitted with a spring 4, which is placed inside the safety system.
[0011] During assembly, the explosion-proof components are restricted by the safety pin 6, allowing them to move only within a certain range.
[0012] Upon receiving the system's release instruction, the pusher 3 releases the steel ball 5, thereby removing the restriction on the safety pin 6. The safety pin 6 then withdraws, releasing the restriction on the explosion-proof component 7.
[0013] When the safety device 3 is released, the end of the safety pin 6 is pulled outward and protrudes from the outer diameter of the safety system.
[0014] When interference occurs after launch, the pusher safety pin 1 activates two mechanical safety mechanisms in advance, and the pusher 3 pushes the fault safety pin 1 into the explosion-proof component 7, locking the explosion-proof component 7 in the safe position so that it can no longer move.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, the present invention has the following beneficial effects: by utilizing the characteristic that the safety pin protrudes from the outer circle after the safety is released, and the characteristic that the explosion-proof component is restricted to the explosion-proof position after the electrical safety is accidentally released in advance, the mechanism can realize safety status identification, avoid the possibility of assembling the fuse in the released state, and at the same time ensure ballistic safety when the circuit function is abnormal after interference, thus improving the safety of the product. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a diagram illustrating the insurance release status.
[0019] Figures 3-4 A schematic diagram of the assembly and fault status of the sales device. Detailed Implementation
[0020] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0021] This embodiment provides a pusher safety structure with fail-safe and error-proof features, including: a fail-safe pin 1, a support lug 2, a pusher 3, a spring 4, a steel ball 5, a safety pin 6, and an explosion-proof component 7.
[0022] One end of the fault safety pin 1 is inserted into the explosion-proof component 7 of the safety system, and the other end is connected to the pusher 3 via the lug 2;
[0023] The safety pin 6 has one end of the explosion-proof component 7 and the other end placed on the outer circle of the safety system. The safety pin 6 has an annular groove, and a steel ball 5 is placed in the groove. The steel ball 5 abuts against the fault safety pin 1 above.
[0024] The safety pin 6 is externally fitted with a spring 4, which is placed inside the safety system.
[0025] During assembly, the explosion-proof components are restricted by the safety pin 6, allowing them to move only within a certain range.
[0026] After launch, once the two mechanical safety locks of the safety system are released, the explosion-proof component rotates at a certain angle to avoid the locked position of the mechanical locks, while the safety pin continues to restrain the explosion-proof component. Upon receiving the system's release command, the pusher releases the steel ball, releasing the restraint on the safety pin, which then retracts to release the restraint on the explosion-proof component. The explosion-proof component moves into position, and the pyrotechnic device is aligned.
[0027] This invention improves the pusher fuse by adding anti-misinstallation and fail-safe features. When the pusher fuse is released, the fuse pin protrudes outwards from the outer diameter of the safety system, as shown in the image. Figure 2 It can effectively identify the insurance status of the sales device and prevent the safety system of the sales device in the uninsured state from being installed in the fuse body, thus effectively ensuring the safety of the fuse.
[0028] After launch, in the event of interference, the pusher safety mechanism activates two mechanical safety mechanisms in advance. The pusher pushes the fail-safe pin into the explosion-proof enclosure, locking the enclosure in the safe position and preventing it from being moved again, thus creating a fail-safe characteristic and achieving fail-safe protection. The structure is as follows: Figure 3 This ensures ballistic safety when the fuse is interfered with and its circuit function malfunctions.
[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A sales device safety structure with fail-safe and error-proof features, characterized in that, include: Failure safety pin (1), lug (2), pusher (3), spring (4), steel ball (5), safety pin (6), explosion-proof component (7); One end of the fault safety pin (1) is inserted into the explosion-proof component (7) of the safety system, and the other end is connected to the pusher (3) through the lug (2); The safety pin (6) has an explosion-proof component (7) at one end and the other end placed on the outer circle of the safety system. The safety pin (6) has an annular groove, and a steel ball (5) is provided in the groove. The steel ball (5) abuts against the fault safety pin (1) above. The safety pin (6) is fitted with a spring (4), which is placed inside the safety system; When assembled, the explosion-proof component is restricted by the safety pin (6) so that it can only move within a certain range.
2. The sales device safety structure with fail-safe and error-proof characteristics as described in claim 1, characterized in that, After receiving the system release command, the pusher (3) releases the steel ball (5) and removes the restriction on the safety pin (6). The safety pin (6) then moves outward to release the restriction on the explosion-proof component (7).
3. The sales device safety structure with fail-safe and error-proof characteristics as described in claim 2, characterized in that, When the insurance of the pusher (3) is released, the end of the safety pin (6) is pulled outward and protrudes from the outer diameter of the safety system.
4. The sales device safety structure with fail-safe and error-proof characteristics as described in claim 3, characterized in that, When interference occurs after launch, the pusher (3) pushes the fault safety pin (1) into the explosion-proof component (7), locking the explosion-proof component (7) in the safe position so that it can no longer move.