Flexible Extendable Drill Bit Assembly With Quick-Release Head
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Solution Overview
Problem
Existing flexible drill bits require separate purchases for different diameters and lengths, and the entire bit must be replaced when the cutting edge is damaged, leading to inefficiency and additional expense.
Innovation Solution
A flexible, extendable drill bit assembly with a quick-release head that allows users to change drill bit diameters and lengths, featuring a locking mechanism and a tailpiece with a hexagonal profile to prevent slipping, enabling the use of various drilling accessories and preventing accidental removal during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unitary construction drill bit is used, then the structure is simple and reliable, but the user must purchase separate drill bits for each diameter and length, increasing cost and complexity of inventory
Solution Approach 1:
The drill bit assembly is divided into separate modular components: a flexible rod, a quick-release head, and interchangeable drill bits. This segmentation allows users to change drill bit diameters and lengths by simply swapping the drill bit component while retaining the flexible rod and head, thereby increasing adaptability without requiring complete replacement of the entire assembly.
Solution Approach 2:
The quick-release head is designed as a universal interface that can accommodate multiple drill bit sizes and types. This multi-functional design allows a single head assembly to work with various drill bits of different diameters and lengths, eliminating the need for multiple specialized drill bit assemblies and reducing inventory complexity.
2Reliability
If the entire drill bit is replaced when the cutting edge is damaged, then the reliability is maintained, but additional expense is incurred
Solution Approach 1:
The drill bit is segmented into a reusable flexible rod assembly and a replaceable cutting element (drill bit). When the cutting edge becomes damaged, only the drill bit component needs to be replaced, while the flexible rod and head can be retained and reused. This segmentation reduces material loss and expense compared to replacing the entire unitary drill bit assembly.
Solution Approach 2:
The design enables selective discarding of only the worn cutting element (drill bit) while recovering and reusing the more durable components (flexible rod and quick-release head). This partial replacement strategy minimizes waste and reduces the frequency of purchases, addressing both reliability maintenance and cost reduction.
3Ease of operation
If a quick-release head is used to allow easy changes, then the ease of operation is improved, but the risk of accidental removal during use increases
Solution Approach 1:
The quick-release head incorporates a dynamic locking mechanism that can transition between locked and unlocked states. During normal use, the mechanism maintains a secure locked state to prevent accidental removal. When intentional release is needed, the user can easily actuate the release mechanism to switch to the unlocked state, allowing for convenient drill bit changes. This dynamic design balances security during operation with ease of intentional replacement.
Data Source
AI summary
A flexible, extendable extension assembly used to create extended length holes and holes through inaccessible areas in walls and framing. The extension assembly including a flexible rod having first and second ends; and a holding means secured to the first end of the rod for releasably holding a tool bit for rotation with the rod.