Rotatable Drawing Plate with Clamping Bar for Ergonomic Alignment
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Solution Overview
Problem
Conventional drawing devices lack flexibility in adapting to the artist's ergonomic needs, particularly during fine drawing operations, and the use of adhesive strips for securing drawing material can lead to damage and inefficiency.
Innovation Solution
A drawing device with a sign frame, support device, and rotatable sign plate that allows for adjustable inclination and rotational positioning of the drawing material, featuring clamping mechanisms and fastening recesses for various formats, and optional motorized rotation for ergonomic alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive strips are used to fix drawing material, then the drawing material can be secured to the drawing plate, but the drawing material may be damaged or torn when adhesive strips are removed
Solution Approach 1:
The patent introduces a clamping bar as an intermediary element between the drawing material and the drawing plate. The clamping bar with clamping feet applies mechanical pressure to hold the drawing material without direct adhesive contact, thus preventing damage while achieving secure fixation
Solution Approach 2:
The patent replaces the chemical bonding mechanism (adhesive strips) with a mechanical clamping system. The clamping bar equipped with elastic clamping feet provides holding force through mechanical pressure rather than adhesive bonding, eliminating the harmful removal process
2Ease of operation
If the drawing device allows only inclination adjustment, then the structure remains simple, but the artist cannot achieve ergonomic positioning for fine drawing operations
Solution Approach 1:
The patent transforms the static drawing plate into a dynamic system with multiple degrees of freedom. The drawing plate can be rotated about a vertical axis in addition to inclination adjustment, allowing the artwork orientation to adapt dynamically to the artist's ergonomic needs during fine drawing operations
Solution Approach 2:
The patent divides the adjustment system into independent functional modules: the support device handles inclination adjustment while the rotatable drawing plate handles orientation adjustment. This segmentation allows each component to perform its specific function without increasing overall structural complexity
3Reliability
If drawing material is fixed with adhesive strips, then fixation is achieved, but additional adhesive strips must always be available and adhesive residues stick to the drawing board
Solution Approach 1:
The clamping bar serves as a reusable intermediary device that replaces consumable adhesive strips. It provides continuous fixation capability without depletion, eliminating the need to constantly supply additional adhesive strips and preventing residue accumulation on the drawing board
Solution Approach 2:
The clamping mechanism is designed to be self-contained and reusable. The elastic clamping feet automatically adjust to hold the drawing material without requiring external adhesive supplies, making the system self-sufficient and free from residue generation
Data Source
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AI summary
The drawing instrument (10) has a drawing frame (12) and a supporting device (14) for supporting the drawing frame relative to a subsurface. A drawing plate is arranged at the drawing frame in a rotary manner. The drawing frame is brought over the supporting device relative to the subsurface in two different pivoted situations. The drawing plate is connected relative to the drawing frame and is provided with a clamping unit (24,26).