Ice Maker Flap Coupling Design to Reduce Movement Transmission Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ice makers in household refrigeration apparatuses face issues with inaccurate movement transmission due to long, thin rods connecting the drive unit and control means, leading to incomplete opening or closing of the ice outlet, which can result in jamming or loss of stability, and require complex and expensive assembly processes.
Innovation Solution
An ice maker design featuring a housing with a flap that pivots between closed and open positions for crushed and uncrushed ice dispensing, utilizing a coupling device with a shorter coupling rod that protrudes through the ice maker's wall and a spring mechanism for precise movement control, with the drive unit positioned closer to the flap for improved mechanical coupling and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a long thin rod is used to connect the drive unit and control means, then the components can be positioned at opposite ends of the housing, but the movement transmission becomes inaccurate and the rod loses stability
Solution Approach 1:
The long connecting rod is divided into multiple shorter rod segments connected by joints. This segmentation allows the drive unit and control means to remain positioned at opposite ends of the housing while reducing the overall flexibility and improving transmission precision. The segmented structure maintains stability by breaking the long flexible rod into rigid shorter segments.
2Device complexity
If a long thin rod is used for coupling, then the drive unit can be positioned away from the flap, but the rod deforms under force and movement transmission becomes insufficient
Solution Approach 1:
The connecting rod is segmented into multiple shorter rigid sections joined by joints. This allows the drive unit to be positioned away from the flap for easier assembly and maintenance, while each short segment maintains sufficient structural strength to resist deformation under operational forces.
Solution Approach 2:
The rod includes pre-designed flexible joints or damping elements that compensate for potential deformation before it occurs. These elements absorb and distribute forces along the rod length, preventing localized bending or twisting that would compromise transmission reliability.
3Ease of operation
If a long connecting rod with multiple bent areas is used, then the drive unit and control means can be positioned at opposite ends, but the assembly process becomes expensive and complex
Solution Approach 1:
The connecting rod is divided into standardized modular segments that can be manufactured separately and assembled using simple connection methods. This segmentation reduces manufacturing complexity compared to creating a single long rod with multiple bent areas, as each segment can be produced with standard bending and joining processes.
Solution Approach 2:
The connecting rod incorporates movable joints instead of fixed bent areas. These dynamic joints allow the rod to adapt to positioning requirements while maintaining structural integrity, simplifying the assembly process compared to precision-bent fixed geometries.
Data Source
AI summary
An ice maker for a household refrigeration apparatus includes a housing with an opening through which ice is dispensable from an interior of the housing out of the housing. A crushing device for crushing ice is provided at the opening. A flap is movably disposed at the opening and switchable between a closed position for dispensing crushed ice and an opened position for dispensing uncrushed ice through the opening. A drive unit is coupled to the flap by a coupling device for moving the flap. The flap has a pivot axis about which the flap pivots and a first flap arm coupled to the coupling device and a second flap arm movable relative to the opening, extend radially away from the pivot axis. A household refrigeration apparatus includes an apparatus housing having a receiving space for food, and an ice maker.