Quick Clamping Mechanism for Uniform Tool Accessory Retention
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Solution Overview
Problem
Existing quick clamping devices for power tools are inefficient in securely attaching and detaching accessory devices with varying thicknesses, lacking a simple and reliable mechanism for transitioning between retaining and clamping states.
Innovation Solution
A quick clamping device with a retaining unit that changes its retaining parameter through rotational and translational movements, allowing for secure attachment and detachment of accessory devices with varying thicknesses, using a retaining element that engages through a form fit and force fit, and a cam mechanism for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional clamping device is used, then accessory devices can be retained, but the clamping force is not uniform across different thicknesses and requires complex operations
Solution Approach 1:
The retaining unit changes its retaining parameter during transition from retaining state to clamping state. Specifically, the retaining element moves from a first position where it engages the accessory device in a retaining state to a second position where it applies clamping force in a clamping state, enabling uniform clamping force across different thicknesses while simplifying operation
Solution Approach 2:
The retaining unit is designed to be movable between different states (retaining and clamping) rather than being fixed. The retaining element can dynamically adjust its position and function, transitioning from merely retaining the accessory device to actively clamping it with uniform force, thereby improving both reliability and ease of operation
2Ease of operation
If a simple retaining mechanism is used, then ease of operation is improved, but clamping force consistency across different thicknesses deteriorates
Solution Approach 1:
The retaining unit serves multiple functions: it retains accessory devices of varying thicknesses and also applies uniform clamping force. By integrating both retaining and clamping functions into a single movable unit, the device achieves ease of operation while maintaining clamping force consistency across different accessory thicknesses
3Reliability
If a complex clamping mechanism is used, then clamping force consistency is improved, but device complexity increases
Solution Approach 1:
The retaining unit combines retaining and clamping functions into a single integrated component. By merging these functions rather than using separate mechanisms, the device achieves uniform clamping force consistency while avoiding the complexity of multiple independent clamping systems
4Device complexity
If the retaining unit is fixed in position, then device complexity is reduced, but adaptability to different accessory thicknesses deteriorates
Solution Approach 1:
The retaining unit is designed to be movable between different positions and states rather than fixed. This dynamic capability allows it to adapt to accessory devices of different thicknesses while maintaining a relatively simple overall device structure, achieving versatility without excessive complexity
Data Source
AI summary
A quick clamping device for positioning an accessory device on a hand-held power tool such as an angle grinder. The quick clamping device includes a drive output unit for moving the accessory device about a drive output axis of the drive output unit. The quick clamping device further includes a retaining unit for retaining the accessory device on the hand-held power tool. The retaining unit has a retaining element. The retaining unit has a retaining parameter which changes in a retaining state, in particular in the event of a transition from a retaining state to a clamping state.