Screw Holder With Conical Grip for Stable Single-Handed Driving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screw holding solutions are limited in their ability to securely hold screws of various sizes and types on screwdrivers, often requiring two hands and failing to maintain alignment during insertion, especially in challenging conditions.
Innovation Solution
A screw holder with a spiral slot and textured inner surface, combined with an elastomeric membrane, securely fits various screwdriver diameters and screw types, ensuring the screw remains aligned and prevents dislodging during insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a one-point grip design is used to hold the screw at the head, then the screwdriver tip can accommodate the screw head, but the screw easily bends over or tilts preventing insertion
Solution Approach 1:
The screw holder divides the single holding point into multiple contact points: the conical surface provides radial contact around the screw shaft, while the textured inner surface provides axial contact with the screw head. This segmentation of the grip into multiple points prevents the screw from tilting or bending during insertion.
Solution Approach 2:
The screw is nested within the conical cavity of the screw holder, with the screw head positioned against the textured inner surface and the screw shaft surrounded by the conical surface. This nested configuration provides stable multi-point contact that prevents tilting while enabling single-handed operation.
2Adaptability or versatility
If a universal design is used to accommodate various screwdriver diameters and screw types, then versatility is improved, but the holding mechanism becomes more complex
Solution Approach 1:
The screw holder is designed with a conical shape and spiral slot that allows it to universally accommodate various screwdriver diameters and screw types. The conical surface adapts to different screw shaft diameters, while the textured inner surface works with various screw head configurations, providing a single universal solution for multiple applications.
Solution Approach 2:
The elastomeric material of the screw holder provides flexible adaptation to different screw and screwdriver dimensions. The material can deform to accommodate various sizes while maintaining the conical geometry, allowing a single holder design to work universally without increasing structural complexity.
3Reliability
If putty adhesive or tape is used to hold the screw head to the screwdriver tip, then the screw can be held in place, but it is not practical for multiple or large scale requirements
Solution Approach 1:
The screw holder is a reusable tool that permanently remains on the screwdriver tip, eliminating the need to apply adhesive or tape for each screw insertion. The elastomeric holder stays in place and can accommodate multiple screws continuously, making it practical for large-scale operations unlike disposable adhesive solutions.
4Reliability
If magnetic materials are used in the screwdriver tip to hold screws, then the screw can be held during insertion, but it increases cost and does not work for non-ferromagnetic materials
Solution Approach 1:
The invention replaces the magnetic field-based holding mechanism with a mechanical contact-based system. The textured inner surface and conical shape provide mechanical friction and geometric constraint to hold the screw, eliminating the need for magnetic materials and enabling compatibility with all screw materials including non-ferromagnetic ones.
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
The screw holder allows single-handed operation, securely holding screws of different sizes and types, maintaining alignment and preventing tilting or bending, even in slippery conditions, at a low cost and with recyclable materials.
Implementation Method 1
The inner surface of the cone is textured, dimpled, protruding-rings or such, which creates friction to hold the screw in place and prevent it from slipping
Implementation Method 2
an elastomeric or polymeric covering over the large opening end of the funnel, which elastomeric or polymeric covering has three or more slits to allow for entry of the screw head and screw body, into the funnel
Data Source
AI summary
A screw holder for holding a screw to be driven by a screwdriver. The screw holder may include a longitudinal holder body with first and second ends. A through-hole may be provided from the first to the second end, with the first end having an opening configured to receive a blade and shank of a screwdriver, and the second end having an opening configured to receive the screw. The second end opening may progressively taper towards the first end. The through-hole may be configured to allow the blade of the screwdriver the engage with the head of the screw within the holder body.