Angle Grinder Tool Holder With Integrated Clamp-Lock Actuation
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Solution Overview
Problem
Existing toolholding devices for portable machine tools, such as angle grinders, lack user-friendly mechanisms for simultaneously actuating the quick-release clamping and locking units, often requiring additional components and risking operator injury during tool changes.
Innovation Solution
A toolholding device with a mechanical or electronic actuating element that simultaneously actuates the quick-release clamping and locking units, utilizing a gear unit to convert operator force into a large actuating force, and incorporating a detent unit for secure positioning, ensuring safe and efficient tool attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate actuating mechanisms are used for the quick-release clamping unit and locking unit, then each unit can be controlled independently, but the device complexity increases and more components are required
Solution Approach 1:
The patent combines the actuation of the quick-release clamping unit and the locking unit into a single integrated mechanism. The actuating element simultaneously engages with both the clamping unit and the locking unit, allowing both functions to be performed with one operation. This reduces the number of separate actuating mechanisms while maintaining independent control capability.
Solution Approach 2:
The single actuating element serves multiple functions: it actuates both the quick-release clamping unit and the locking unit. This multi-functional design eliminates the need for separate actuating mechanisms for each function, reducing device complexity while preserving the ability to independently control both units.
2Reliability
If additional actuating elements are added to simultaneously control both units, then operational safety improves, but the installation space required increases
Solution Approach 1:
The patent merges the control of multiple safety functions into a single actuating element. This element simultaneously controls both the quick-release clamping unit and the locking unit, ensuring that both functions are activated during tool change without requiring additional separate actuating elements that would consume extra installation space.
3Device complexity
If a single actuating element is used for both units, then component quantity and space are reduced, but the force required for actuation may be insufficient
Solution Approach 1:
The patent introduces a transmission element as an intermediary between the actuating element and the loaded units (quick-release clamping unit and locking unit). This transmission element converts the movement and force from the single actuating element into the necessary actuating forces for both units, ensuring sufficient force is applied to each function while maintaining a compact design with fewer components.
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
Enhances user comfort and safety by allowing simultaneous actuation of multiple units, preventing spindle rotation during tool changes, and optimizing component usage and space efficiency.
Implementation Method 1
utilizing a gear unit to convert operator force into a large actuating force
Data Source
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AI summary
The invention relates to a tool-receiving device for a portable machine tool, in particular for an angle grinder, comprising at least one output unit (14a; 14b; 14c) with at least one output spindle (16a; 16b; 16c) which can be rotated; at least one rapid clamping unit (18a; 18b; 18c) which is arranged on the output spindle (16a; 16b; 16c) and comprises at least one torque transmission element (20a; 20b; 20c) that is connected to the output spindle (16a; 16b; 16c), in particular in a rotationally fixed manner, and at least one securing element (24a; 24b; 24c), in particular a securing element, which is movably mounted in an axial direction along an output axis (22a; 22b; 22c) of the output spindle (16a; 16b; 16c), comprising at least one locking unit (26a; 26b; 26c) for preventing the output spindle (16a; 16b; 16c) from rotating; and at least one actuating unit (28a; 28b; 28c) that has at least one actuating element (30a; 30b; 30c), in particular a movably mounted actuating element, by means of which the locking unit (26a; 26b; 26c) can be actuated, in particular as a result of a movement of the actuating element (30a; 30b; 30c). According to the invention, the actuating element (30a; 30b; 30c) is designed to actuate the rapid clamping unit (18a; 18b; 18c), in particular the securing element (24a; 24b) or the torque transmission element (20c), in particular as a result of a movement of the actuating element (30a; 30b; 30c).