Clamping Frame Element with Nested Spring to Prevent Loosening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clamping frames for flat materials like canvases face issues with maintaining tension and ease of handling, as separate springs can be loosened during handling, leading to the need for re-tensioning and re-insertion, and protruding elements complicate handling and storage.
Innovation Solution
A frame element with a clamping cavity and a fixing device that accommodates a separate spring, where the spring's fixing and tensioning ends are fully enclosed, providing internal support without protrusions, and can be designed with a pivot bearing and guide surfaces to maintain tension and prevent loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate springs are provided outside the frame element for tensioning the flat material, then the ease of operation for stretching and fixing the material is improved, but the reliability deteriorates because the springs can be loosened or detached during handling
Solution Approach 1:
The spring is nested within the frame element by receiving it into a receiving space formed by the frame body. The receiving space is defined by the inner surface of the frame element, and the spring is positioned inside this enclosed space, preventing it from detaching during handling while maintaining its tensioning function.
2Reliability
If separate elastic elements are integrated into the frame element, then the reliability of tension maintenance is improved, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The system is segmented into separate functional components: the frame element provides structural support and contains the receiving space, while the spring provides the elastic tensioning function. This segmentation allows each component to be manufactured independently with simple structures, avoiding the complexity of integrating elastic elements directly into the frame.
Solution Approach 2:
The elastic function is extracted from the frame element and implemented as a separate spring component. The spring is taken out as an independent element that is simply received into the frame's receiving space, rather than being integrated into the frame structure itself, thereby simplifying the frame's design and manufacturing.
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
This design ensures stable tensioning of the flat material without external spring protrusions, simplifies handling, and reduces the need for re-tensioning and re-insertion, while allowing for a rigid frame construction without integrated elastic elements.
Implementation Method 1
a separate spring (4) having a fixing end (6) and a tensioning end (7) opposing the fixing end (6) for pre-tensioning the fixed flat material (5) into the tensioning cavity (2) by means of a tensioning end (7) of the spring (4) opposite the fixing end (6)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A frame element (1) for a clamping frame for clamping a flat material (5) is described, the frame element (1) having a clamping cavity (2) for clamping the flat material (5) and a fixing device (10) for fixing the flat material (5) on the frame member (1). The flat material (5) can be clamped to the fixing device (10) by means of a fixing end (6) of a spring (4) and the fixing end (6) interacts with the fixing device in such a way that the fixed flat material can be held in place by means of a clamping end (7) of the Spring (4) in the clamping cavity (2) can be prestressed. Such a frame element (1) is to be developed in such a way that the springs (4) causing the tension in the flat material (5) cannot be loosened by careless handling of the tensioning frame composed of several frame elements. To solve this problem, it is proposed to arrange the fixing device (10) in the clamping cavity (2) and to dimension the clamping cavity (2) in such a way that the spring (4) together with its fixing end (6) and its clamping end (7) are completely in the Clamping cavity (2) can be accommodated.