Rotating Frame Member Canvas Tensioning System
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Solution Overview
Problem
Existing frame systems for securing and stretching canvases are challenging to assemble, often require additional equipment, and can result in uneven tension, damage to the canvas or frame, and safety hazards from protruding nails.
Innovation Solution
A frame structure with rotating frame members and corner pieces that allow for uniform tension application without nails or staples, using a fastening clip to secure the canvas and a cavity in the corner pieces to store excess material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nails or staples are used to secure the canvas to the frame, then the canvas can be fastened to the frame, but the canvas and frame may be damaged and protruding nails can lead to injury
Solution Approach 1:
A fastening clip serves as an intermediary component between the canvas and frame member. The clip has a first engagement feature that secures to the frame member and a second engagement feature that holds the canvas, eliminating direct contact between nails/staples and the canvas while maintaining secure fastening
Solution Approach 2:
The harmful nails or staples are extracted from the fastening system and replaced with a fastening clip that achieves the same securing function without puncturing or damaging the canvas material
2Reliability
If manual stretching is used to apply tension to the canvas, then the canvas can be secured to the frame, but the tension application may be uneven resulting in non-optimal finish
Solution Approach 1:
The frame member is designed to rotate from an initial position to a final position, dynamically changing the orientation of the canvas during the process. This rotation automatically applies uniform tension to the canvas as it transitions from a loose state to a taut state, eliminating manual stretching inconsistencies
Solution Approach 2:
The canvas is preliminarily secured to the frame member in a relaxed state using the fastening clip, allowing subsequent rotation to apply tension uniformly without requiring manual stretching beforehand
3Adaptability or versatility
If frame systems are designed for different canvas sizes, then various canvas dimensions can be accommodated, but the assembly becomes challenging and time consuming
Solution Approach 1:
The frame member design with rotational capability and the fastening clip create a universal system that can accommodate different canvas sizes and proportions without requiring different assembly procedures or additional equipment
Solution Approach 2:
The frame system is segmented into modular components (frame members, corner pieces, fastening clips) that can be independently assembled and configured for different canvas dimensions, simplifying the overall assembly process
4Reliability
If additional equipment is used for stretching the canvas, then sufficient tension can be applied to the canvas, but the assembly process becomes more complex
Solution Approach 1:
The frame member itself provides the tensioning function through its rotational movement. The rotation of the frame member automatically applies and maintains uniform tension to the canvas, eliminating the need for separate stretching equipment while maintaining reliable tension application
Data Source
AI summary
A method of applying tension to a canvas that is secured to a frame structure composed of frame members and corner pieces, wherein the frame members are interconnected using corner pieces adapted to receive ends of the frame members to form the frame structure, and wherein each of the frame members comprises a longitudinal axis. The method includes securing the canvas to a frame member; rotating the frame member around a rotation axis that is parallel with the length of the frame member, wherein the canvas, secured to the frame member, increases intension due to the rotation; and fixing the rotated frame member in the rotated position using the corner piece such that the increase in tension in the canvas is preserved.