Multi-Purpose Hand Tool Wire Form Spring Retention
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Solution Overview
Problem
Conventional hand tools with securing mechanisms for tool bits require substantial wall thickness, limiting the tool's profile and functionality, especially when trying to maintain a narrow design while providing a secure hold for punchdown and screwdriver functions.
Innovation Solution
A hand tool design incorporating a wire form spring as a biasing component within a slot in the tool shaft, allowing for secure engagement of reversible tool bits without the need for substantial wall thickness, enabling a narrow profile while maintaining spring force for secure bit retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional securing mechanisms are used for tool bits, then secure retention of tool bits is achieved, but wall thickness increases substantially
Solution Approach 1:
The securing mechanism is segmented into a spring component and a separate tool bit holder, allowing the spring to be positioned within the slot rather than requiring thick walls. This segmentation enables the spring force to be applied efficiently through the slot structure, maintaining secure tool bit retention while minimizing wall thickness requirements.
Solution Approach 2:
The invention transitions from a conventional radial or axial securing mechanism to a longitudinal slot-based arrangement. The spring is positioned within the slot and engages the tool bit holder along the longitudinal axis of the shaft, utilizing the slot's geometry to provide securing force without requiring substantial wall thickness in traditional directions.
2Reliability
If substantial wall thickness is used for securing mechanisms, then tool bit security is improved, but tool profile becomes bulky and functionality is limited
Solution Approach 1:
By segmenting the securing mechanism into discrete components (spring, tool bit holder, and slot structure), the design achieves reliable tool bit security without requiring a bulky overall profile. This allows the tool to maintain a narrow, versatile form factor that can accommodate multiple functions including punchdown and screwdriver operations.
Solution Approach 2:
The spring component acts as a flexible element within the thin-walled shaft structure, providing the necessary securing force without requiring rigid, thick walls. This flexible approach enables the tool to maintain a narrow profile while still securing tool bits reliably for various functions.
3Adaptability or versatility
If narrow profile is maintained, then versatility and usability are improved, but conventional securing mechanisms cannot provide secure hold
Solution Approach 1:
The invention utilizes the longitudinal dimension of the slot to provide securing force, rather than relying on radial wall thickness. The spring positioned within the slot engages the tool bit holder along the length of the shaft, enabling secure hold in a narrow-profile tool design.
Solution Approach 2:
The invention changes the geometric parameters of the securing mechanism by introducing a longitudinal slot and positioning the spring within it, rather than using traditional radial arrangements. This parameter change enables the spring to generate sufficient securing force within the constrained dimensions of a narrow-profile tool.
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 wire form spring secures tool bits effectively, allowing the hand tool to maintain a narrow profile while providing secure hold for punchdown and screwdriver operations, enhancing usability and versatility without the bulk of conventional securing methods.
Implementation Method 1
a spring positioned within the slot. The first recess is configured to receive a first reversible tool bit and the second recess is configured to receive a second reversible tool bit. The biasing component is configured to secure the first reversible tool but within the first recess.
Implementation Method 2
A hand tool design incorporating a wire form spring as a biasing component within a slot in the tool shaft, allowing for secure engagement of reversible tool bits without the need for substantial wall thickness, enabling a narrow profile while maintaining spring force for secure bit retention.
Data Source
AI summary
A multi-tool is shown according to an exemplary embodiment. The multi-tool includes a handle, a reversible shaft removably couplable to the handle, and plurality of tool bits. The plurality of tool bits are removably couplable to a first end and a second of the reversible shaft. In a specific embodiment, at least one of the plurality of tool bits is a punchdown tool bit.