Projectile Fuse Housing Position Part Coupling
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Solution Overview
Problem
Existing fuse housing structures for projectiles lack a simple, precise, and accurate method for coupling a position part, which can lead to erroneous explosion prevention and timing issues during the firing process.
Innovation Solution
A fuse housing structure with a through-hole portion and a position part that includes a large diameter portion, an outer diameter reduction portion, and a deformation portion, allowing for external force-induced deformation to securely couple with the housing, featuring a stepped portion for rotation and a curved surface for alignment, ensuring accurate positioning and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional coupling method is used for the position part to the fuse housing, then the manufacturing process is simpler, but the coupling precision and accuracy are insufficient leading to erroneous explosion prevention issues
Solution Approach 1:
The position part is divided into three distinct segments: a large diameter portion, an outer diameter reduction portion with a stepped portion, and a deformation portion. This segmentation allows each part to perform its specific function - the large diameter portion provides structural support, the outer diameter reduction portion with stepped portion enables precise positioning and rotation control, and the deformation portion allows for secure coupling through external force-induced deformation. The segmentation resolves the contradiction by achieving high coupling precision through functional division without requiring overly complex assembly mechanisms.
Solution Approach 2:
The outer diameter reduction portion is pre-formed with a stepped portion that corresponds to the stepped portion in the through-hole portion of the fuse housing. This preliminary preparation of the coupling interface ensures that when the position part is inserted and subjected to external force, the deformation occurs at the predetermined location and orientation, achieving accurate coupling without requiring complex real-time adjustment mechanisms during assembly.
2Stability of the object's composition
If the position part is made rigid for stable positioning, then positioning stability is improved, but the ability to deform under external force for secure coupling is reduced
Solution Approach 1:
The position part exhibits different mechanical properties at different locations: the large diameter portion and outer diameter reduction portion maintain high rigidity for stable positioning and precise orientation, while the deformation portion is designed with localized flexibility to deform under external force. This local quality differentiation resolves the contradiction by providing both positioning stability and deformation capability where needed, without compromising the overall structural integrity.
Solution Approach 2:
The position part transitions from a static rigid structure to a dynamic system where the deformation portion can change its shape in response to external force. This dynamic characteristic allows the position part to securely couple with the fuse housing through controlled deformation while maintaining stability in the non-deformed portions. The dynamic behavior enables the structure to adapt during assembly while preserving positioning accuracy.
3Manufacturing precision
If the coupling process requires multiple steps for precise alignment, then coupling accuracy is improved, but the manufacturing time and complexity increase
Solution Approach 1:
The stepped portion in the outer diameter reduction portion and the corresponding stepped portion in the through-hole portion are pre-configured to provide automatic alignment during insertion. This preliminary preparation eliminates the need for complex multi-step alignment procedures, as the stepped portions guide the position part into the correct orientation and position automatically, achieving high coupling accuracy while maintaining fast assembly speed.
Solution Approach 2:
The deformation portion is designed to automatically deform under external force applied during assembly, securing itself to the fuse housing without requiring additional fastening operations or complex alignment procedures. The self-service characteristic of the deformation mechanism resolves the contradiction by achieving precise coupling through the inherent properties of the structure rather than through multiple manual intervention steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simple, precise, and accurate coupling of the position part to the fuse housing, preventing erroneous explosions and ensuring the projectile is safe from premature detonation by maintaining the explosive initiator blocked until the desired time, enhancing the safety and reliability of the projectile's handling and firing.
Implementation Method 1
a deformation portion protruding from the other side of the large diameter portion in such a manner as to be inserted into the through-hole portion by means of the deformation caused by the external force
Implementation Method 2
the position part rotates along the through-hole portion by means of the contact between the stepped portion and the stepped portion correspondence portion
Data Source
AI summary
A fuse housing structure including: a fuse housing coupled to a projectile and having a first surface exposed to the outside, a second surface hidden to the interior of the projectile, and a through-hole portion formed between the first surface and the second surface; and a position part deformed by an external force, in the state of being inserted into the through-hole portion, in such a manner as to be coupled to the fuse housing, the position part including a large diameter portion having a first outer diameter, an outer diameter reduction portion connected to one side of the large diameter portion, and a deformation portion protruding from the other side of the large diameter portion in such a manner as to be inserted into the through-hole portion by means of the deformation caused by the external force.