Discrete Multitool Locking Mechanism for Independent Tool Control
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Solution Overview
Problem
Existing multi-tools face issues with locking systems, particularly those using a laterally extending bar-like member that disengages from all tool members simultaneously, leading to inadequate control over individual tool member positions and orientations.
Innovation Solution
A multi-tool design featuring a tool cam surface with radially inward notches and a spring assembly with lock members that engage the tool cam surface to selectively lock and unlock tool members, allowing for independent positioning and orientation of each tool member, with a locking system that maintains engagement with adjacent tool members to prevent simultaneous disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a laterally extending bar-like member is used to engage all tool members simultaneously, then the locking system is simple in structure, but the control over individual tool member positions is lost and all members disengage at once
Solution Approach 1:
The locking system is segmented into multiple independent lock members, each capable of engaging and disengaging from individual tool members. This allows selective locking and unlocking of specific tool members without affecting others, resolving the contradiction between structural simplicity and individual control capability.
2Device complexity
If a single laterally extending bar engages all tool members, then the device complexity is reduced, but the reliability of individual tool member locking is insufficient
Solution Approach 1:
The locking system is divided into separate lock members, each independently responsible for securing specific tool members. This segmentation ensures that the locking reliability of individual members is maintained even if one member fails or is disengaged, while the overall system remains relatively simple.
3Adaptability or versatility
If friction is used to transfer torsional force between adjacent tool members, then the tool members can be coupled together, but precise control over individual member positions and orientations is lost
Solution Approach 1:
The locking system uses independent lock members for each tool member, allowing precise control over the position and orientation of individual members. This eliminates the need for friction-based coupling, enabling accurate positioning while maintaining the ability for tool members to function together when needed.
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 solution provides precise control over tool member positions and orientations, ensuring that one tool member can be unlocked without disrupting the locking of adjacent members, enhancing usability and ergonomic functionality.
Implementation Method 1
A spring assembly is attached to the first handle member in one mode of caring out the embodiment and the spring assembly comprising first and second spring members each engaging the first and second lock members to bias the lock extension to the tool cam surface the spring assembly
Implementation Method 2
There is friction between these tool members, which transfers torsional force from one moving tool member to an adjacent tool member
Data Source
AI summary
A locking system for a multitool where multiple discrete lock members are attached to a handle and the lock members can be individually engaged to lock and unlock tool members from a retained to an extended position and vice versa within the handle of a multitool.