Centre Arm Pivot Layout for Stable Contact Grill Plates
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Solution Overview
Problem
Existing contact grilling or roasting devices with centre arms have a pivot shaft arranged eccentrically, leading to a large pivot range, instability, and increased construction complexity, making them unsuitable for compact positioning and requiring additional features with high construction expenditure.
Innovation Solution
A centre arm design with a pivot shaft positioned at the intersection of the centre axes of the holding and supporting sections, enhancing rigidity and stability, and incorporating devices for weight relief and fixing directly on the pivot shaft to simplify construction and combine functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot shaft is arranged eccentrically in the holding section, then the upper contact plate can be held, but a large pivot range is produced requiring free space and the construction becomes unstable
Solution Approach 1:
The holding section is designed with an L-shaped asymmetric geometry where the short arm contains the pivot shaft and the long arm provides the holding function. This asymmetric design allows the pivot shaft to be positioned optimally within the structure, achieving both operational movement and structural stability without requiring excessive free space.
Solution Approach 2:
The centre arm transitions from a simple linear structure to a three-dimensional L-shaped configuration. By adding the vertical dimension with the holding section, the design achieves compact positioning while maintaining stability, eliminating the need for large horizontal free space that would be required with a conventional eccentric pivot arrangement.
2Ease of operation
If the pivot shaft is arranged eccentrically, then the holding function is achieved, but the construction becomes complex and additional functions require high expenditure
Solution Approach 1:
The centre arm is designed as an integrated L-shaped component where the supporting section and holding section form a unified structure. The pivot shaft is positioned at the intersection point, allowing multiple functions (support, holding, pivoting) to be achieved through a single integrated design rather than separate components, thereby reducing construction complexity.
Solution Approach 2:
The L-shaped centre arm structure serves multiple functions simultaneously: the supporting section provides vertical support, the holding section provides the holding function, and the pivot shaft at their intersection enables rotational movement. This multi-functional design eliminates the need for additional separate mechanisms.
3Stability of the object's composition
If the pivot shaft is arranged at the intersection of centre axes, then rigidity and stability are increased, but the pivot range is reduced
Solution Approach 1:
The centre arm design allows the holding section to pivot dynamically around the vertically arranged pivot shaft. This dynamic arrangement provides sufficient movement range for operational purposes while maintaining the stability and rigidity benefits of the central pivot position, achieving a balance between both requirements.
Data Source
AI summary
The invention concerns a center arm for holding an upper grilling or roasting plate, the center arm having a substantially vertical supporting section and a holding section which is arranged pivotably on the vertical supporting section and on which is arranged the upper grilling or roasting plate, which is distinguished in that the pivot shaft of the holding section is formed and arranged approximately at the point of intersection S of the center axes M1 and M2 of the holding section on the one hand and the supporting section on the other hand. Furthermore the invention concerns a contact grilling or roasting device having such a center arm.