Interchangeable-Head Lever Tool for Tool-Free Secure Locking
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Solution Overview
Problem
Existing hand tools with interchangeable heads require external tools for head replacement, leading to complexity, cumbersome procedures, insecure locking mechanisms, and limited versatility.
Innovation Solution
A hand tool with interchangeable heads featuring a lever and tool heads with elastically-biased engaging members, allowing quick and secure attachment and detachment without external tools, and a pivoting head for enhanced maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastening mechanism with external tools is used for head replacement, then the locking mechanism can be secure, but the device complexity increases and head replacement becomes cumbersome
Solution Approach 1:
The engaging member is designed to be actuated directly by the user's finger through the actuating hole, eliminating the need for external tools. The spring member automatically engages and disengages the engaging member from the recessed portion through elastic deformation, enabling self-service head replacement while maintaining secure locking during use.
2Reliability
If a complex fastening mechanism is used to secure the head, then the head attachment can be reliable, but the head replacement procedure becomes cumbersome
Solution Approach 1:
The spring member stores elastic energy that automatically drives the engaging member into the recessed portion during attachment and enables easy release during detachment. This eliminates multi-step fastening procedures while ensuring reliable head attachment through automatic engagement.
Solution Approach 2:
The spring member is pre-loaded in a compressed state within the housing, storing elastic energy that is automatically released to engage the engaging member with the recessed portion. This preliminary action ensures rapid and reliable attachment without requiring complex manual fastening operations.
3Device complexity
If a fixed head design is used, then the tool structure can be simple, but the adaptability to various tasks is limited
Solution Approach 1:
The tool head is designed with a standardized interface that accepts multiple different heads through the same actuating mechanism. Users can quickly swap between different functional heads (e.g., pry heads, cutting heads, hammer heads) by simply actuating the engaging member, enabling one tool to perform multiple functions while maintaining structural simplicity.
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 adaptation to various tasks with secure head attachment, reduced user fatigue, and improved ergonomic efficiency through interchangeable heads and a pivoting mechanism.
Implementation Method 1
a spring member (34) biased in an elastic manner
Data Source
AI summary
A tool with interchangeable heads includes a lever with a pivoting head and a slot configured to receive multiple tool heads. The tool heads are secured via an engaging mechanism using an elastically biased engaging member, allowing quick and tool-free attachment and removal. The first tool head features dual pry forks with a central groove for prying operations. The second tool head has a modified pry fork configuration for expanded utility. The third tool head incorporates a fixed and a movable toothed head enabling gripping and clamping functions. The tool enhances efficiency, durability, and user convenience across various applications.