Detachable Hole Saw Guide for Accurate Ceiling Hole Enlargement
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Solution Overview
Problem
Conventional hole saws face difficulties in efficiently enlarging holes in ceilings without causing inconvenience, as they require fixing lumber and ceiling together with long bolts and screws, leading to inaccurate and labor-intensive processes, and existing solutions with detachable enlargement caps are complex and costly to manufacture.
Innovation Solution
A hole saw with detachable hole enlargement guide and support pieces that includes a conical fastener with a bouncing coil spring and magnetically secured support pieces, allowing for easy detachment and reattachment to a conical fastener, enabling the hole saw to be easily adapted to different sizes and positions for accurate and efficient hole enlargement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional hole saws are used to enlarge holes in ceilings, then hole enlargement is possible, but the process requires fixing lumber and ceiling together with long bolts and screws, leading to labor-intensive and inaccurate operations
Solution Approach 1:
The hole saw is divided into a main body and a detachable enlargement guide component. The enlargement guide can be attached or detached from the main body, allowing the user to switch between standard hole cutting and hole enlargement modes without requiring complex fixings or multiple separate operations.
Solution Approach 2:
The enlargement guide is designed to be detachable and adjustable, allowing dynamic adaptation to different hole enlargement needs. The guide can be removed after use, restoring the hole saw to its original configuration, providing flexibility and ease of operation.
2Adaptability or versatility
If detachable enlargement caps are used to enable hole enlargement, then adaptability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The enlargement guide is segmented into simple components that can be easily attached to and removed from the hole saw main body. This segmentation allows for low complexity while maintaining adaptability, as only the necessary guide portion is added when hole enlargement is needed.
Solution Approach 2:
The enlargement guide is designed to be temporarily attached (discarded after use) and can be recovered for storage or future use. This approach avoids permanent integration of complex mechanisms, keeping the base hole saw simple while providing adaptability when needed.
3Stability of the object's composition
If conventional hole saws require fixing with long bolts and screws, then structural stability is improved, but the time consumption and labor intensity increase
Solution Approach 1:
The enlargement guide is pre-designed with attachment features that align with the hole saw main body, allowing for quick connection without requiring precise measurement or complex alignment during operation. This preliminary design reduces on-site preparation time and labor.
Solution Approach 2:
The fixing mechanism is designed to be dynamically adjustable and easily detachable, allowing rapid attachment and removal without the need for permanent bolting or screwing operations, thereby reducing time consumption while maintaining adequate stability during use.
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 solution simplifies the hole enlargement process by allowing the hole saw to be easily adjusted in size and position, reducing the need for complex fixings and minimizing the risk of inaccurate cuts, while being cost-effective and easy to manufacture, thus enhancing adaptability and efficiency.
Implementation Method 1
a coil spring (15) coupled to the drive shaft (12) formed integrally with the lower end periphery of the nose bolt (16)
Implementation Method 2
a conical fastener-bouncing coil spring (35) first fitted to the conical fastener-fitting rod (30) from top side of the hole saw body (20)
Data Source
AI summary
The present invention relates to a hole saw that is mounted on an electric drill to cut a hole formed on a flat plate such as a ceiling, and more particularly, to a hole saw with hole enlargement guide and support pieces detachable therefrom that is capable of cutting a hole with a larger size (diameter) than a hole already cut in a ceiling.