Rotatable Driving Tool Shank With Magnetic Coupling
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Solution Overview
Problem
Conventional driving tools often require additional levers to disengage tool bits from the mandrel, making them difficult to operate, and fail to provide secure, solid coupling for rotation with the drive member, especially in tight spaces.
Innovation Solution
A driving tool design featuring a tool stem with a non-circular spatial engaging member and a tool shank that can be tilted and rotated, secured by a retaining member and a magnetic attraction system, allowing for secure attachment and operation in various angular positions and tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an additional lever tool is used to disengage the tool bit from the mandrel, then the tool bit can be selectively disengaged, but the operation becomes difficult and complex
Solution Approach 1:
The tool bit is designed with a release mechanism that allows the user to disengage it from the mandrel using the tool bit itself, without requiring a separate lever tool. The user can press a release button or mechanism on the tool bit to automatically disengage it from the mandrel, making the system self-service and eliminating the need for additional tools.
Solution Approach 2:
The release mechanism is extracted and integrated directly into the tool bit structure, allowing the disengagement function to be performed by the tool bit itself rather than requiring an external lever tool. This extraction of the release function from a separate tool and its integration into the tool bit resolves the contradiction.
2Reliability
If the tool bit is securely coupled to the mandrel for rotation, then reliable driving is achieved, but the ability to tilt and operate in tight spaces is reduced
Solution Approach 1:
The coupling mechanism between the tool bit and mandrel is designed to be dynamic rather than rigidly fixed. The tool bit can be securely coupled for rotational driving through magnetic attraction and mechanical engagement, but can also be tilted to various angles while maintaining the coupling. This dynamic capability allows the tool to adapt between secure rotation and tilted positioning for tight spaces.
Solution Approach 2:
The coupling mechanism is segmented into separate functional components: one that provides secure rotational coupling through magnetic and mechanical means, and another that allows tilting motion. This segmentation enables the tool bit to maintain reliable driving connection while simultaneously providing adaptability for tilted operations in tight spaces.
3Ease of operation
If a magnetic attraction system is used to secure the tool bit, then easy attachment is achieved, but the coupling strength may be insufficient without additional retaining mechanisms
Solution Approach 1:
The magnetic attraction system is merged with additional retaining mechanisms such as mechanical claws or detents that engage with corresponding features on the mandrel. This combination provides both the ease of attachment from magnetic attraction and the enhanced coupling strength from the mechanical retaining features, resolving the contradiction between ease of operation and coupling strength.
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 and secure attachment and rotation of tool bits within the driving tool, allowing operation in tight spaces without the need for additional levers, ensuring effective and versatile tool usage.
Implementation Method 1
a magnetic member disposed therein for attracting the spatial engaging member of the tool stem to the tool shank
Data Source
AI summary
A driving tool includes a tool stem having a non-circular spatial engaging member and having one or more flat surfaces, a tool shank having a non-circular socket opening and having one or more curved surfaces for pivotally receiving the spatial engaging member of the tool stem and for allowing the tool shank to be selectively tilted relative to a longitudinal axis of the tool stem. A control ferrule is slidably engaged onto the tool shank and slidable and engageable onto the tool stem for retaining the tool shank in line with the longitudinal axis of the tool stem and for preventing the tool shank from being tilted relative to the tool stem to other angular position.