Elastic Clamping Collar Packaging for Bone Screws
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Solution Overview
Problem
Conventional plastic packaging for elongated objects with increased head diameters, such as bone screws and ejector pins, risks damaging the sharp-edged threads by scraping off plastic particles, which can lead to wound-healing issues and damage to precision-machined components during packaging.
Innovation Solution
An individual packaging using an elastically bendable cylindrical sleeve with a secure, expandable clamping collar that holds only the head of the object, keeping the bolt-side end at a distance from the packaging interior, preventing contact and potential damage, and allowing for easy removal by compressing radial widened regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional plastic packaging is used for elongated objects with increased head diameters, then the packaging provides basic protection, but the sharp-edged threads scrape off plastic particles that can be carried into the thread channel and cause wound-healing problems
Solution Approach 1:
The packaging is segmented into distinct functional zones: a clamping collar region that secures the head, a widened transition region, and a sleeve region that maintains distance from the bolt end. This segmentation allows each region to perform its specific function - the clamping collar provides secure holding while the widened and sleeve regions prevent contact between the bolt and packaging interior.
Solution Approach 2:
The packaging structure acts as an intermediary barrier between the bolt end and the packaging interior. The widened regions and sleeve portion create a physical intermediary zone that prevents direct contact between the precision-machined bolt end and the plastic packaging surface, thereby preventing plastic particle contamination.
2Reliability
If conventional plastic packaging is used for precision-machined ejector pins, then the packaging provides basic protection, but the sensitive bolt end makes direct contact with the inside of the plastic packaging causing damage
Solution Approach 1:
The packaging structure is segmented to create distinct zones: the clamping collar for head securing, the widened transition region, and the sleeve region. This segmentation ensures the precision bolt end remains in the sleeve region at a distance from the packaging interior, protecting the micrometer-precision machining from damage.
Solution Approach 2:
The widened regions and sleeve portion function as an intermediary protective barrier between the precision-machined bolt end and the plastic packaging. This intermediary structure prevents direct contact, thereby preserving the manufacturing precision of the bolt end.
3Ease of operation
If the clamping collar is made elastically expandable, then the head can be securely held and easy removal is enabled, but the structure becomes more complex
Solution Approach 1:
The clamping collar is designed with elastic expandability, allowing it to dynamically adjust between a constricted state for secure head holding and an expanded state for easy object removal. The elastic material property enables this dynamic behavior without requiring complex mechanical mechanisms.
Solution Approach 2:
The clamping collar utilizes changes in its physical parameters - specifically its elastic deformation - to transition between holding and release states. By applying finger pressure or mechanical force, the collar's elastic properties are exploited to expand and release the head, enabling easy removal without complex structures.
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
Prevents contact between the bolt-side end and the packaging, eliminating the risk of plastic particle transfer and damage to precision components, ensuring safe packaging and easy retrieval of the object.
Implementation Method 1
an elastically expandable clamping collar (5) that follows the introduction opening (2) in the axial direction
Implementation Method 2
an approximately cylindrical packaging sleeve that is open at the face end at least on one side, composed of an elastically bendable material
Data Source
AI summary
Packaging for elongate objects such as a screw (20, 30) having a head (21) of enlarged diameter and a bolt part (23, 24) having reduced diameter. The packaging (1) includes a packaging sleeve that is open at at least one end and that is made of an elastically bendable material. The packaging sleeve has at least one upper insertion opening (2) and securely holds the head (21) of the object screw (20) in an axial direction in an elastically expandable clamping collar (5) that is adjacent to the insertion opening (2) and maintains the bolt-side end of the object at a distance from the inside of the plastic packaging.