Multilevel Support Grid Rail Pull-Out for Low-Leverage Cooking Access
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Solution Overview
Problem
Existing cooking appliances with rail pull-out devices experience high mechanical leverage forces when pushing and pulling multiple food carriers horizontally, limiting accessibility and causing wear, as they are designed with fixed rails and sliding rails that do not evenly distribute the weight and force of the food carriers.
Innovation Solution
A holding and guiding device with a rail pull-out system featuring a vertically oriented fixed rail and a horizontally oriented sliding rail, coupled with a support grid that has receiving units at different heights, allowing for even mechanical coupling and force distribution, and an anti-tip device to prevent tilting, facilitating smooth horizontal displacement of multiple food carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If food carriers are pushed and pulled horizontally on fixed rails with sliding rails, then multiple food carriers can be moved simultaneously, but high mechanical leverage forces cause wear and limit accessibility
Solution Approach 1:
The invention transitions from horizontal rail movement to vertical suspension movement. Food carriers are hung vertically from a suspension rod that moves up and down within guide rails, changing the dimension of movement from horizontal to vertical. This dimensional change eliminates the leverage forces that occurred when food carriers were pushed horizontally on rails.
Solution Approach 2:
Instead of pushing food carriers forward on horizontal rails, the invention inverts the approach by suspending food carriers vertically and pulling them downward or pushing them upward. The food carriers are attached to a suspension rod that moves vertically, reversing the traditional horizontal movement paradigm and eliminating the associated mechanical leverage problems.
2Ease of operation
If food carriers are accessed from the front, then user accessibility is improved, but lateral access is restricted and mechanical leverage increases
Solution Approach 1:
The invention changes the access dimension from front horizontal access to lateral access while the food carriers are suspended vertically. Users can approach from the side and manipulate the suspension rod vertically, which provides easy access without creating the high leverage forces that would result from front horizontal pushing and pulling.
3Stability of the object's composition
If a rigid support grid is used, then structural stability is improved, but assembly and cleaning become difficult
Solution Approach 1:
The support grid is divided into multiple individual support elements that can be independently assembled and disassembled. These segmented support elements are suspended vertically and can be easily detached for cleaning or replacement, maintaining structural stability when assembled while enabling easy maintenance when disassembled.
Solution Approach 2:
The support grid transitions from a rigid fixed structure to a dynamic suspended structure. The support elements are hung vertically and can move independently, providing structural stability during use while allowing easy disassembly and reconfiguration for cleaning and maintenance purposes.
Data Source
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AI summary
The invention relates to a holding and guiding device (19) which is designed to accommodate a plurality of supports (20, 21) to be cooked in different levels and to move the supports (20, 21) to be cooked horizontally, the holding and guiding device (19) a rail expansion device (22, 23) arranged on a vertical wall (14, 15) of the muffle (12) with at least one horizontally oriented fixed rail (24, 25) and at least one horizontally oriented rail coupled to the fixed rail (24, 25) and movable relative thereto sliding rail (26, 27) and a support grid (32) with at least two receiving units (35) for the food carriers (20, 21) formed at different heights, which is arranged on the sliding rail (26, 27). The invention also relates to a cooking appliance (19) with such a device (19).