Fixing Clip Ribs for Tolerance-Tolerant Stud Retention
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Solution Overview
Problem
Existing fixing clips struggle to securely attach to threaded studs or welding pins with varying manufacturing tolerances, often requiring precise placement and lacking in ergonomic release mechanisms, which limits their versatility and longevity.
Innovation Solution
The design incorporates resiliently deformable ribs with angled edges that guide and grip studs during insertion, while allowing for secure retention and easy release through lever-operated mechanisms, along with biasing forces from deformable wings and abutments to enhance retention and accommodate larger tolerances in stud placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing fixing clips are used to attach to threaded studs or welding pins, then attachment is achieved, but they struggle to accommodate varying manufacturing tolerances and require precise placement
Solution Approach 1:
The fixing clip incorporates resiliently deformable ribs that can dynamically adjust their position and shape to accommodate variations in stud placement. The ribs are designed to flex and deform elastically, allowing the clip to adapt to manufacturing tolerances without requiring precise initial placement, thereby resolving the contradiction between adaptability and placement precision requirements.
Solution Approach 2:
The fixing mechanism utilizes changes in the physical state of the ribs from undeformed to deformed states. The ribs can change their dimensional parameters (length, angle, position) in response to stud placement variations, enabling the system to accommodate a range of positions while maintaining secure attachment, thus resolving the tolerance accommodation issue.
2Reliability
If resiliently deformable ribs with angled edges are used to guide and grip studs, then secure retention is achieved, but the device complexity increases
Solution Approach 1:
The fixing clip is segmented into multiple functional ribs, each with specific angled edges designed for particular functions (guiding, gripping, retaining). This segmentation allows each rib to perform a specialized function that contributes to overall reliability while keeping individual rib structures relatively simple, thus achieving secure retention without excessive overall complexity.
Solution Approach 2:
The ribs incorporate curved or angled surfaces rather than purely straight edges, creating guiding surfaces that naturally direct the stud into proper alignment during insertion. These curved geometries provide self-aligning features that improve retention reliability while adding only moderate geometric complexity to each rib structure.
3Ease of operation
If lever-operated mechanisms are incorporated for easy release, then ease of operation improves, but the device complexity increases
Solution Approach 1:
The lever-operated release mechanism is designed to be actuated by the user's finger or tool, utilizing the user's own force to accomplish the release. The lever provides mechanical advantage, allowing easy release with minimal user effort, while the mechanism itself remains relatively simple in structure, thus improving ease of operation without proportionally increasing complexity.
4Force
If biasing forces from deformable wings and abutments are used to enhance retention, then retention force is improved, but the device complexity increases
Solution Approach 1:
The biasing function is merged into the existing rib structure through integrally formed deformable wings and abutments. Rather than adding separate biasing components, the design incorporates elastic deformation capabilities directly into the ribs themselves, allowing the same structural elements to provide both mechanical engagement and retained biasing force, thus improving retention force while minimizing additional 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
This solution provides a secure, ergonomic, and reusable fixing mechanism that can handle manufacturing tolerances effectively, ensuring robust attachment and repeated use without compromising retention force or longevity.
Implementation Method 1
resiliently deformable ribs with angled edges that guide and grip studs during insertion
Implementation Method 2
easy release through lever-operated mechanisms
Implementation Method 3
biasing forces from deformable wings and abutments to enhance retention
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A fixing clip (10) for securing an assembly (3) to a ridged component (5A), the fixing clip comprising: at least one resiliently deformable rib arranged to engage the ridged component and being shaped such that: movement of the ridged component in a first direction relative to the fixing clip causes the resiliently deformable rib to deform, and movement of the ridged component in a second direction opposite to the first direction is prevented by engagement between the resiliently deformable rib and the ridged component. The resiliently deformable rib comprises an engaging surface arranged such that upon application of an external force to the engaging surface the resiliently deformable rib is configured to deform so as to release the ridged component for movement in the second direction.