Elastic Housing Fastener for Thermal Assembly Misalignment
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Solution Overview
Problem
Temperature-induced size changes in housings can cause misalignment of hooks and slots during assembly, leading to poor assembly quality or damage.
Innovation Solution
A fastener design featuring a protruding portion with a buckling portion, a through hole in the second housing, and elastic portions that allow for relative movement and alignment, enabling the fastener to adjust its position and securely clamp onto the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the hook and slot are fixed at predetermined positions on the housings, then the assembly structure is simple and manufacturing is easy, but temperature-induced size changes cause misalignment during assembly
Solution Approach 1:
The patent introduces a fastener with a movable connecting portion that can dynamically adjust its position within the through hole. The connecting portion is not fixed but can move along the longitudinal direction, allowing the fastener to adapt to position deviations caused by thermal expansion or contraction of the housings. This dynamic adjustment capability resolves the contradiction by maintaining alignment precision while keeping the overall assembly structure simple.
Solution Approach 2:
The patent changes the positional parameter of the fastener by allowing the connecting portion to move within the through hole. This movement enables the fastener to compensate for dimensional changes in the housings due to temperature variations. The elastic portions also deform to accommodate position changes, further enabling parameter adjustment to maintain proper alignment despite thermal effects.
2Manufacturing precision
If the hook and slot positions are made adjustable to compensate for temperature changes, then alignment precision is improved, but the device complexity increases
Solution Approach 1:
The fastener incorporates a movable connecting portion that can automatically adjust its position within the through hole without requiring complex adjustment mechanisms. The elasticity of the connecting portion and elastic portions provides the necessary dynamics, allowing the fastener to self-align with the buckling portion even when position deviations occur due to thermal effects. This simple dynamic design avoids increasing device complexity while maintaining alignment precision.
Solution Approach 2:
The fastener is designed to automatically compensate for position deviations through the elastic deformation of its components. The connecting portion moves and the elastic portions deform to accommodate misalignment, enabling the fastener to self-correct without external intervention or complex control systems. This self-service mechanism maintains alignment precision while keeping the device structure relatively simple.
3Reliability
If the fastener is made movable within the through hole to allow alignment adjustment, then assembly reliability is improved, but the structural complexity of the fastener increases
Solution Approach 1:
The fastener employs a movable connecting portion that can shift position within the through hole to accommodate alignment variations. This dynamic capability significantly improves assembly reliability by ensuring proper engagement even when housings experience thermal expansion or contraction. The movement is achieved through simple elastic deformation rather than complex mechanical mechanisms, thus improving reliability without proportionally increasing structural complexity.
Solution Approach 2:
The connecting portion and elastic portions are designed with flexible characteristics, allowing them to deform and move to accommodate position deviations. This flexibility enables the fastener to adapt to various alignment conditions, improving assembly reliability. The flexible design uses simple elastic materials and structures rather than complex adjustable mechanisms, thereby limiting the increase in structural complexity.
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
Ensures accurate alignment and secure assembly of housings by allowing for slight adjustments in the fastener's position, mitigating the effects of temperature-induced deviations and improving assembly quality.
Implementation Method 1
the two elastic portions inclinedly extend into the first opening from the first portion... the buckling portion is allowed to pass through the elastic portions, and after the buckling portion passes through the elastic portions, the elastic portions return and are clamped on the protruding portion
Data Source
AI summary
A fastener is adapted for assembling a first housing to a second housing. The first housing is provided with a protruding portion and a buckling portion, and the second housing has a first surface, a second surface, and a through hole. The fastener includes a first portion, at least one connecting portion, at least two elastic portions, and a second portion. The first portion movably abuts against the first surface and has a first opening. The connecting portion is accommodated in the through hole. One end of the connecting portion is connected to the first portion. The connecting portion is spaced apart from an inner edge of the second housing by a gap. The two elastic portions inclinedly extend into the first opening. The second portion movably abuts against the second surface and is disposed at the another end of the connecting portion.