Magnetic Bit-Holder Bracelet for Wrist-Mounted Tool Retention
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Solution Overview
Problem
Users face difficulties in accessing and managing screwdriver bits, especially in restrictive working conditions, due to their concealment, poor visibility, and vulnerability to damage or loss when stored in pockets or traditional bit holder boxes.
Innovation Solution
A magnetic bit-holder bracelet device made of polymer material, featuring cylindrical or conical reception cavities with magnetic retention and a pivoting or tilting extraction system, allowing easy access and retention of screw bits on the wrist, enhancing visibility and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bits are stored in a storage box attached to the user's belt, then the bits are protected from loss, but the bits become difficult to access and select when the box is located at a remote location
Solution Approach 1:
The patent transitions from storing bits in a box on the belt (horizontal/distant access) to integrating bit holders directly into the wristwear (immediate proximity). This dimensional change in spatial arrangement allows bits to be both secure and instantly accessible without requiring the user to reach for a separate storage container.
Solution Approach 2:
The patent combines the functions of wristwear and bit storage into a single integrated device. The bit holders are incorporated directly into the wristwear structure, merging the support function with the storage function, thereby eliminating the need for separate storage containers and improving both retention and accessibility.
2Quantity of substance
If bits are placed in bulk in the user's pocket, then storage capacity is increased, but the choice and gripping of bits becomes difficult due to poor visibility and accessibility
Solution Approach 1:
The patent divides the storage space into multiple individual bit holder compartments within the wristwear structure. Each compartment is designed to hold a specific bit, allowing for easy visual identification and selection. This segmentation maintains storage capacity while dramatically improving accessibility and bit selection efficiency.
3Reliability
If clamping force is increased to prevent bits from falling, then bit retention is improved, but easy and rapid removal or extraction of bits is opposed
Solution Approach 1:
The patent employs elastic elements that provide dynamic clamping force. The elastic nature allows the bit holder to automatically adjust its grip strength - maintaining strong retention during normal use while allowing rapid release when force is applied during extraction. This dynamic mechanism resolves the contradiction between strong retention and easy removal.
4Reliability
If bits extend parallel to the tool axis and are held by magnetic attraction with slight protrusion, then magnetic retention is achieved, but the gripping part is insufficient making extraction difficult especially when wearing gloves
Solution Approach 1:
The patent creates an asymmetric bit holder design where bits are positioned at angles rather than parallel to the tool axis. This asymmetric arrangement provides better leverage and gripping surfaces for fingers or gloved hands, making extraction easier while maintaining magnetic retention through the optimized holder geometry.
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
Facilitates quick and effective gripping and extraction of screw bits in various working conditions, ensuring retention and visibility, reducing the risk of loss and damage.
Implementation Method 1
the bottom of each receiving cavity comprising a magnet suitable in exerting a magnetic attraction force on the end piece concerned to retain it and maintain it in the reception cavity concerned
Data Source
AI summary
A magnetic bit-holder bracelet device intended to be worn by a user on his wrist and to hold screwdriver or similar bits includes a bracelet made of plastic, that can be attached or fixed to the wrist, incorporating, over all or part of its circumference, a row of pockets and holder cavities built into the bracelet, each formed by one of the pockets or attached to the bracelet, each in one of the pockets and able to house axially, and removably, one of the bits, the blind end of each holder cavity having a magnet able to apply a magnetic force of attraction to the bit concerned in order to retain and hold it in the relevant holding cavity.