Tool Bit Holder for Hex Wrench Torque and Speed
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Solution Overview
Problem
Existing hexagonal wrenches and screwdriver bits struggle with applying sufficient torque efficiently, leading to time-consuming bolt removal processes and potential wrench twisting, especially when dealing with small, adhesive-threaded machine bolts.
Innovation Solution
A tool bit holder designed to accommodate multiple sizes of hexagonal wrenches and bits, featuring a speed rotation extension and ergonomic benefits, which allows for centered torque application and mechanical reinforcement of the wrench shaft to prevent bending or twisting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a hexagonal wrench is used to remove small machine bolts, then the bolt can be loosened, but the wrench shaft twists or bends under torque
Solution Approach 1:
The patent introduces a bit holder as an intermediary device between the user's hand and the hexagonal wrench. The bit holder features a reinforced shaft with a hexagonal recess that securely holds the wrench, transferring torque through a rigid connection point rather than allowing the wrench shaft to twist. This intermediary structure protects the wrench from bending while still enabling effective torque application for bolt removal.
2Ease of operation
If torque is applied from a position perpendicular to the longitudinal axis of the wrench, then the wrench can engage the bolt, but the torque application is inefficient and causes wrench twisting
Solution Approach 1:
The patent repositions the torque application point from a perpendicular orientation to a collinear arrangement along the longitudinal axis of the wrench shaft. By aligning the torque application force with the shaft's longitudinal axis rather than applying it perpendicularly, the system eliminates twisting moments and enables more efficient power transmission directly through the shaft, significantly improving bolt removal speed while preventing wrench deformation.
3Reliability
If multiple rotations are performed to extract the bolt, then the bolt can be removed, but the process becomes time-consuming
Solution Approach 1:
The bit holder incorporates a preliminary positioning feature with a hexagonal recess that pre-aligns and secures the wrench in the correct orientation before torque application begins. This preliminary engagement ensures that the first rotation applies maximum effective torque directly to the bolt, reducing the total number of rotations needed for extraction and significantly decreasing bolt removal time while maintaining reliable bolt extraction.
4Force
If the wrench shaft is made longer to provide better leverage, then torque application improves, but the wrench becomes more prone to twisting and dropping
Solution Approach 1:
The bit holder serves as a protective intermediary that supports the wrench shaft throughout its length, preventing twisting even when the shaft is extended for better leverage. The reinforced structure of the bit holder accommodates longer wrench shafts without allowing them to bend or twist during operation, thereby maintaining ease of manipulation while providing the leverage benefits of extended shaft length.
Data Source
AI summary
A tool bit holder that accommodates and secures specific ranges of hexagonal wrench sizes in different physical orientations therein, for four purposes: speed rotation of the tool for fast bolt extraction, support of the hexagonal wrench's shaft for an increased torque application, mechanically strengthening of a hexagonal wrench, and for the application of torque centered about the longitudinal axis of the working arm of the hexagonal tool bit so as to prevent the stripping out of the hexagonal socket in the mechanical fastener.