Torque Enhancing Adapter for Hand Tools
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Solution Overview
Problem
Handheld torque drivers often lead to arm, wrist, and hand injuries due to repetitive use, causing fatigue, soreness, and potential long-term conditions like carpal tunnel syndrome and tendonitis, as operators struggle to apply accurate torque without ergonomic assistance.
Innovation Solution
A driver adapter with multiple sockets and through holes allows for the use of a torque lever, providing mechanical advantage and reducing the force required to apply torque, while accommodating different driver sizes and configurations, thus offering an ergonomic solution to reduce operator strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hand held driver is used to apply torque to fasteners, then the fastener can be tightened to the required torque, but repeated use causes arm, wrist and hand pain and injury
Solution Approach 1:
The adapter acts as an intermediary between the driver handle and the fastener, providing a larger lever arm that reduces the force required by the operator. The adapter includes a socket that receives the driver handle and an extended body with a torque lever, creating mechanical advantage while distributing the torque application over a longer period, reducing peak stress on the operator's arm, wrist and hand.
Solution Approach 2:
The adapter extends the torque application in a different dimensional direction by providing an extended body with a torque lever perpendicular to the driver handle axis. This allows the operator to apply torque through a larger radius, effectively reducing the force required at the hand while maintaining the same torque output at the fastener.
2Ease of operation
If a torque lever is introduced to provide mechanical advantage, then the force required to apply torque is reduced, but the device complexity increases
Solution Approach 1:
The adapter is designed with a universal socket that can receive different types and sizes of driver handles, making it compatible with various fastening applications. The extended body with torque lever provides consistent mechanical advantage across all applications, reducing the need for multiple specialized tools while maintaining ease of operation.
Solution Approach 2:
The adapter is segmented into distinct functional components: a socket portion for receiving the driver handle, an extended body providing the lever arm, and a torque lever for applying force. This segmentation allows each component to be optimized independently while maintaining overall simplicity in the design.
3Adaptability or versatility
If multiple drivers of different sizes are used for different applications, then the appropriate driver can be selected for each task, but the number of tools required increases
Solution Approach 1:
The adapter incorporates a universal socket design that can receive multiple types and sizes of driver handles through adjustable or interchangeable socket mechanisms. This single adapter can work with various driver types (flathead, Phillips, hex, star) and sizes, eliminating the need for operators to maintain multiple specialized tools while maintaining adaptability to different fastening applications.
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 driver adapter reduces the force needed to achieve a given torque, decreases operator fatigue, and allows for comfortable hand positioning, enabling more efficient and safer torqueing operations without the need for multiple tools.
Implementation Method 1
A driver adapter with multiple sockets and through holes allows for the use of a torque lever, providing mechanical advantage and reducing the force required to apply torque
Data Source
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AI summary
A hand tool system comprises a first driver, a second driver, and a driver adapter. The first driver and the second driver each comprises a driver handle having an external configuration and a driver component secured to the driver handle. The driver adapter is selectively fittable over the driver handles of the first and second drivers. The driver adapter comprises an elongate body, a first socket formed in a first end of the elongate body, a second socket formed in a second end of the elongate body, and a plurality of through holes formed through and distributed longitudinally along a length of the elongate body. Each socket has an internal configuration sized and shaped to receive a driver handle of either the first or second driver and to transfer torque to the driver upon rotation of the driver adapter.