Actuation Handle Clamping Frames for Secure Attachment
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Solution Overview
Problem
Conventional actuating handles for leaf-like components, such as windows and doors, have complex assembly processes and a high risk of unintentional disconnection between the handling part and the driver element.
Innovation Solution
An actuating handle design featuring a receiving sleeve with pivotable clamping frames that securely engage the driver element, preventing removal by exerting a holding force through angled clamping surfaces and projections, allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grub screw is used to connect the handling part to the driver element, then the connection is secure, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The invention extracts the fastening function from the handling part itself and transfers it to a separate clamping device that is integrated into the receiving sleeve. This allows the handling part to be simple while the clamping device provides the secure connection through its clamping frames and holding force mechanism
Solution Approach 2:
The clamping device acts as an intermediary between the handling part and the driver element. Instead of directly connecting these two components with a screw, the clamping device mediates the connection by clamping the driver element within the receiving sleeve, providing secure fastening while simplifying the overall assembly process
2Reliability
If a grub screw connection is used, then the handling part is securely attached, but the risk of unintentional disconnection increases due to complex assembly
Solution Approach 1:
The clamping device is pre-configured within the receiving sleeve with its clamping frames positioned to automatically engage the driver element. The spring element is pre-loaded to provide the necessary holding force, so that when the driver element is inserted, the connection is immediately secured without requiring time-consuming screw fastening operations
Solution Approach 2:
The clamping device performs self-service by automatically clamping the driver element upon insertion. The spring element automatically exerts the holding force to prevent disconnection, eliminating the need for manual screw tightening and reducing the risk of assembly errors that could lead to unintentional disconnection
3Ease of operation
If clamping frames are made pivotable, then assembly and disassembly become easier, but the device structure becomes more complex
Solution Approach 1:
The clamping frames are made dynamically pivotable rather than fixed, allowing them to move between an open position for easy insertion of the driver element and a closed clamping position for secure attachment. This dynamic capability enables tool-free assembly and disassembly while maintaining a relatively simple overall structure through the use of pivot axes and spring mechanisms
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
The design simplifies assembly, ensures secure attachment of the handling part to the driver element, and prevents unintentional removal, making it suitable for various component thicknesses.
Implementation Method 1
a spring element (40) which exerts a holding force on the driver element (20), by means of the clamping surfaces (35a, 35b) of the clamping frames (33a, 33b), so that the handling part (10) is prevented from being pulled off the driver element (20)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
An actuating handle for wing-like structural elements, such as windows, doors and the like, comprises a handling part (10), a driver element (20), a receiving sleeve (30), a clamping device for clamping the driver element (20) in the receiving sleeve (30) and a force-exerting device (40) acting on the clamping device. The clamping device comprises a first clamping frame (33a) and a second clamping frame (33b) which are arranged opposite each other and on both sides of the driver element (20) and are pivotable in opposite pivoting directions. The clamping frames (33a, 33b) exert a clamping force on the driver element (20), the clamping force preventing the handling part (10) from being pulled off the driver element (20).