Driver Bit with Rings for Torque Absorption
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Solution Overview
Problem
Conventional driver bits fail to withstand high impact and torque during repeated use, leading to reduced structural integrity and shorter lifespan.
Innovation Solution
The driver bit design incorporates a torsion transfer section with proximal rings to absorb and distribute torque, and distal rings to manage impact force, along with a cone-shaped base and power groove for enhanced durability and fit within power tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional driver bits are used, then they can perform basic driving functions, but they fail to withstand high impact and torque during repeated use, leading to reduced structural integrity and shorter lifespan
Solution Approach 1:
The driver bit is divided into distinct functional segments: a tip portion for engaging fasteners, a neck portion with reduced diameter, a shank portion for power tool engagement, and intermediate transition portions. This segmentation allows each segment to be optimized for its specific function, with the neck portion specifically designed to absorb and distribute impact and torque forces, preventing stress concentration and improving overall reliability and lifespan
Solution Approach 2:
Different portions of the driver bit are given different geometric properties tailored to their functions. The neck portion has a reduced diameter compared to both the tip and shank, creating a stress-absorbing zone. The tip portion has geometry optimized for fastener engagement, while the shank has geometry optimized for power tool chuck engagement. This local differentiation of properties allows the bit to withstand high impact and torque while maintaining structural integrity
2Ease of manufacture
If the driver bit design is simplified, then manufacturing is easier, but the bit cannot effectively absorb and transfer torque and impact forces
Solution Approach 1:
The driver bit comprises a tip portion, a neck portion, and a shank portion as distinct segments. This segmentation enables each portion to be manufactured using optimized processes while maintaining overall structural integrity. The clear definition of portion boundaries facilitates manufacturing while ensuring proper torque and impact force distribution
Solution Approach 2:
The neck portion is designed with a reduced diameter parameter compared to the tip and shank portions. This parameter change creates an effective stress-absorbing zone that can be manufactured using standard machining processes. The specific diameter reduction ratio is optimized to balance torque absorption capability with manufacturing feasibility
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
This design significantly improves the longevity and durability of driver bits by effectively absorbing and transferring torque and impact forces, reducing cam-out force and extending the bit's operational life.
Implementation Method 1
The one or more proximal rings can be further configured to absorb and transfer torque, experienced at least at a proximal portion of said tip engaging said fastener during driving of said fastener, to at least a portion of said neck
Implementation Method 2
The one or more proximal rings can be further configured to absorb and transfer torque
Implementation Method 3
the one or more distal rings can be configured to distribute impact force from the shank to at least a portion of the neck
Data Source
AI summary
Driver bits comprise a body, a tip disposed at proximal end of the body and configured to engage a faster, a shank disposed at distal end of the body and configured to fit into a power tool, a neck extending between the tip and the shank, and a torsion transfer section with one or more rings at distal end of the tip to absorb and transfer torque to torsion zone of the neck. The shank can also include one or more rings at proximal end of the shank to distribute impact force from the shank to the torsion zone of the neck.