Force-Release Screw Connection for Swelling Damage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screw connections in assemblies are prone to damage when subjected to excessive forces, such as those caused by swelling components like batteries, leading to potential destruction of the assembly components.
Innovation Solution
A force release component connected to the screw and/or boss that selectively releases a portion of the screw from the boss in response to a specified force, mitigating damage by allowing controlled separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw connection is used to hold assemblies together, then the assembly is securely fastened, but the components are vulnerable to damage from excessive forces
Solution Approach 1:
The screw connection system is segmented into multiple components: a screw, a boss, and a force release component. The force release component acts as a separate element that can selectively engage or disengage from the boss, dividing the load-bearing function between the permanent screw-boss connection and the controllable force release mechanism.
Solution Approach 2:
The force release component serves as an intermediary element between the screw and the boss. It mediates the force transmission by providing a controlled release mechanism that activates when excessive force is detected, protecting the primary screw-boss connection from damage while allowing intentional disassembly.
2Reliability
If a force release component is added to protect against excessive force, then damage prevention is improved, but device complexity increases
Solution Approach 1:
The force release component is designed to automatically activate when excessive force is applied to the assembly. The component self-regulates the connection strength by engaging or disengaging from the boss based on the applied load, eliminating the need for external sensors, actuators, or control systems to detect and respond to excessive force.
Solution Approach 2:
The force release component changes its mechanical parameters (engagement state) in response to force magnitude. It transitions between engaged and disengaged states based on whether the applied force exceeds a predetermined threshold, dynamically adjusting the connection strength without requiring complex control logic.
3Stability of the object's composition
If the screw connection is made secure and permanent, then assembly stability is improved, but ease of repair deteriorates
Solution Approach 1:
The screw connection system transitions from a static, permanent connection to a dynamic connection that can change its state. The force release component provides a controlled release mechanism that allows the screw to be easily disassembled from the boss when needed, while maintaining stable connection during normal operation through its engaged state.
Data Source
AI summary
A screw includes a screw head, a threaded shaft, and a force release component connecting the screw head to the threaded shaft. The force release component releases the screw head from the threaded shaft in response to a specified force. The specified force is substantially along a screw axis in-line with the threaded shaft.