Assisted Opening Multitool Spring Mechanism
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Solution Overview
Problem
Existing multitools require manual effort to open and close, making it difficult to operate with one hand, especially when the other hand is occupied.
Innovation Solution
An assisted opening multitool handle system with a spring mechanism that provides rotational resistance and positive torque to open the tool member from a closed to an open orientation, allowing for one-handed operation by utilizing an external torque initially and then biasing the tool to remain open.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual effort is required to open and close the tool member, then the structure remains simple, but one-handed operation becomes difficult when the other hand is occupied
Solution Approach 1:
The spring system is pre-loaded in the closed position to store potential energy, which is then released to automatically open the tool member when the locking mechanism is disengaged, eliminating the need for manual opening effort
Solution Approach 2:
The assisted opening system uses the spring's stored energy to automatically perform the opening action without requiring external manual intervention, making the system self-servicing for the opening operation
2Ease of operation
If the tool member is held open without assistance, then the structure remains simple, but the user cannot easily extract the tool member when the other hand is occupied
Solution Approach 1:
The spring is pre-compressed or pre-tensioned in the closed position, storing energy that is automatically released to open the tool member when the locking mechanism is released, eliminating the need for manual extraction effort
Solution Approach 2:
The spring-based assisted opening system automatically performs the tool member extraction action using stored energy, making the system self-servicing and eliminating dependence on the user's other hand being free
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
Enables easy one-handed operation of multitool components like blades or pliers by providing initial rotational assistance and maintaining the open position with stored energy, enhancing usability and convenience.
Implementation Method 1
a spring system operatively attached to the tool member where the spring system provides rotational resistance of the tool cover for a first portion of rotation of the tool member from the closed orientation to the open orientation, and the spring system provides positive torque for a second portion of rotation
Data Source
AI summary
An assisted opening multitool handle comprising a handle housing having a longitudinal axis and a lateral axis, the handle housing having first and second longitudinal regions, the handle housing having an interior surface defining a channel region. The assisted opening multitool handle further comprises a tool member pivotally attached to the handle housing and operatively configured to be positioned in a closed orientation within the channel region and configured to rotate in an opening direction to an open orientation.