Hole Saw Adapter With Axially Displaceable Bushing
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Solution Overview
Problem
Existing adapters for holding hole saws on power tools require additional coupling parts and tools for mounting, making the process cumbersome and difficult to handle.
Innovation Solution
A simplified adapter design featuring a driver flange with axially protruding pins for rotational coupling and a threaded spindle with a connecting bushing that allows indirect rotational coupling, enabling direct connection to the power tool chuck without additional components or tools, facilitating easy mounting and secure torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional coupling parts and tools are used for mounting the hole saw, then the connection is secure and reliable, but the mounting process becomes cumbersome and difficult to handle
Solution Approach 1:
The patent combines the coupling part and mounting tool functions into the adapter itself. The adapter integrates a driver with driver pins for rotational coupling and a threaded spindle for axial securing, eliminating the need for separate coupling parts and tools while maintaining secure connection.
Solution Approach 2:
The adapter serves multiple functions: it provides rotational coupling through driver pins, axial securing through the threaded spindle, and direct connection to the power tool chuck. This multi-functionality replaces what previously required multiple separate components and tools.
2Reliability
If additional coupling parts are used, then the torque transmission is reliable, but the device complexity increases
Solution Approach 1:
The adapter merges the functions of rotational coupling and axial securing into a single integrated component. The driver with driver pins and the threaded spindle are combined in one adapter body, reducing device complexity while maintaining reliable torque transmission through the driver pins.
3Power
If a direct rotational coupling is provided between the driver and threaded spindle, then the torque transmission is efficient, but the ease of mounting is reduced
Solution Approach 1:
The connecting bushing is designed to be axially displaceable between a release position (for easy mounting) and a coupling position (for torque transmission). This dynamic positioning allows the system to switch between ease of operation and power transmission efficiency as needed.
Solution Approach 2:
The connecting bushing acts as an intermediary between the driver and threaded spindle. It provides indirect rotational coupling when in the coupling position, allowing torque transmission while still permitting easy mounting when displaced to the release position.
Data Source
AI summary
An adapter for holding a hole saw on a power tool includes a driver, a threaded spindle, and a connecting bushing, via which the threaded spindle and the driver are coupled in a direction of rotation.