Telescoping Drill Guide Guard for Safe Bit Alignment
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Solution Overview
Problem
Existing drill guides require manual operation to maintain alignment and protection, exposing operators to drill bits and debris during drilling, posing risks of injury from contact or debris impact.
Innovation Solution
A drill guide that couples to a non-rotating portion of a hand-held drill, featuring a telescoping guard that enshrouds the drill bit and a guide foot for alignment, allowing safe operation by protecting the operator's hands and maintaining drill bit alignment with a surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to maintain alignment and protection, then ease of operation is improved, but safety deteriorates due to operator exposure to drill bits and debris
Solution Approach 1:
The drill guide assembly acts as an intermediary device between the operator and the drill bit, providing a physical barrier (telescoping guard) that protects the operator's hands from contact with the rotating drill bit and debris while still allowing manual control of the drill for alignment and operation
Solution Approach 2:
The drill guide is divided into functional segments: a mount for attachment, a telescoping guard for protection, a coupler for chuck access, and a guide foot for alignment. This segmentation allows each component to perform its specific function while working together to solve both safety and operational requirements
2Object-affected harmful factors
If a telescoping guard is used to enshroud the drill bit, then safety is improved by preventing operator contact, but device complexity increases
Solution Approach 1:
The telescoping guard consists of nested tubular members that can slide within each other, allowing the guard to extend to cover the drill bit during operation and retract to allow drill bit removal. This nesting approach provides protection functionality while minimizing the overall size and complexity of the device when not in use
Solution Approach 2:
The telescoping guard is designed to be dynamic rather than fixed, allowing it to extend and retract as needed. This dynamic capability enables the guard to adapt between different operational states (drilling vs. bit removal) without requiring a completely complex mechanical system, as the telescoping mechanism can be implemented with simple guide surfaces and retention features
3Ease of operation
If a chuck access window is provided, then ease of operation is improved for chuck key access, but device complexity increases
Solution Approach 1:
The coupler is designed with an asymmetric chuck access window that is positioned and sized to provide clear access to the chuck key holes while maintaining structural integrity. The asymmetric design allows the window to be optimally positioned for operator access without requiring complex reinforcement or additional components
Data Source
AI summary
A drill guide for a drill bit of a chucked hand-held drill is disclosed. The drill guide includes a mount, a coupler, a telescoping guard, and a guide foot. The mount is configured to couple to a non-rotating portion of the chucked hand-held drill. The coupler extends from the mount and forms a chuck access window aligned with the chuck when the mount is coupled to the non-rotating portion of the chucked hand-held drill thereby allowing a chuck key to interface with the chuck. The telescoping guard extends from the coupler and is configured to telescope into a retracted position from an extended position. The guide foot is coupled to the telescoping guard such that the drill guide enshrouds the drill bit when the telescoping guard is in the extended position, and the drill bit passes through the guide foot when the telescoping guard is in the retracted position.