Fitting Handle Reset Device for Left-Right Conversion
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Solution Overview
Problem
Existing door handle resetting devices are not easily adjustable between left-hand and right-hand operation without requiring additional tools or reconfiguration, and they often require spring tensioning during upward handle movement.
Innovation Solution
A resetting device with a shield coupling element, a spring element, and a handle coupling element that allows for easy rotation between two handle stop positions, utilizing a spring element with stop surfaces to maintain the handle in the correct orientation without needing additional force or tool use, and ensuring the spring is not tensioned during upward handle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing resetting devices are used, then the handle can be reset between left-hand and right-hand operation, but additional tools or reconfiguration are required and the spring must be tensioned during upward handle movement
Solution Approach 1:
The resetting device allows dynamic reconfiguration between left-hand and right-hand operation modes. The handle coupling element can be rotated to different stop positions, and the spring element can be transferred between first and second spring positions, enabling the device to adapt its configuration based on the desired operation mode without requiring complete disassembly or additional tools.
Solution Approach 2:
The resetting device is divided into separable functional elements: the spring element can be independently transferred between the first spring position (engaging the first stop surface) and the second spring position (engaging the second stop surface). This segmentation allows the spring to be repositioned to match the desired handle operation direction, simplifying the adjustment process.
2Reliability
If the spring element is tensioned during upward handle movement, then the handle can be reset, but unnecessary force is applied and the risk of losing parts or re-tensioning increases
Solution Approach 1:
The spring element is pre-positioned in the appropriate spring position (first or second) before handle operation begins. This preliminary configuration ensures that the spring is already oriented correctly to provide resetting force in the desired direction, eliminating the need to tension the spring during upward handle movement and preventing the harmful effects of unnecessary force application.
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
Enables easy conversion between left-hand and right-hand operation without reconfiguring components, maintaining the handle's correct orientation and ensuring the spring is not unnecessarily tensioned during upward movement, thus simplifying handle adjustment and reducing the risk of losing parts or re-tensioning the spring.
Implementation Method 1
the spring element (28) has a first spring position (70) and a second spring position (72), wherein the spring assembly or spring element can be transferred by a circumferential rotation about the axis of rotation (108) from the first spring stop position (70) to the second spring stop position (72)
Data Source
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AI summary
The present invention relates to a return device (16) for a handle (14) of a fitting (10), a fitting (10) with such a return device (16), and a method (120) for moving the return device (16) between a first handle stop position (74) and a second handle stop position (80). The return device (16) comprises a shield coupling element (26), a spring element (28), and a handle coupling element (30), wherein the shield coupling element (26) has a stop element (38), the stop element (38) having a first stop surface (40') and a second stop surface (40"), and the spring element (28) having a first spring end (48') and a second spring end (48").Furthermore, the handle coupling element (30) is rotatable relative to the shield coupling element (26) in a circumferential direction (106) about a rotation axis (108) at least between a first handle stop position (74) and a second handle stop position (80), wherein the handle coupling element (30) and the spring element (28) are coupled in the circumferential direction between the first handle stop position (74) and the second handle stop position (80), wherein the spring element (28) is rotatable in the circumferential direction (106) by a rotational movement of the handle coupling element (30) in the circumferential direction (106) between a first spring stop position (70), in which the first spring end (48') rests against the first stop surface (40'), and a second spring stop position (72), in which the second spring end (48") rests against the second stop surface (40").