Ice Bucket Agitator Fork-and-Socket Coupling to Reduce Gear Slipping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ice dispensing systems in refrigerator appliances face issues with the slipping of interengaging gears between the dispenser motor and agitator, leading to undesirable audible effects and reduced performance due to torque challenges, especially when ice nuggets become lodged or clump together.
Innovation Solution
A robust and disengagable connection between the dispenser motor and agitator is achieved through a fork and socket mechanism, where the fork is selectively engagable with the socket to transfer torque and can be disengaged for easy removal of the ice bucket, utilizing a spring to bias the fork into engagement and a lever to facilitate disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interengaging gears are used to connect the dispenser motor and agitator, then torque transfer is achieved, but gear slipping occurs under high torque conditions causing audible effects and reduced performance
Solution Approach 1:
A flexible coupling element (such as a rubber or elastomeric coupling) is introduced between the dispenser motor and agitator to replace the direct gear interengagement. This intermediary element provides torque transfer while accommodating misalignment and reducing slip, thereby eliminating the harmful audible effects and improving reliability without requiring precise gear meshing.
2Object-affected harmful factors
If the dispenser motor is positioned above the ice bucket to avoid liquid water damage, then motor protection is achieved, but the connection between motor and agitator becomes complex requiring additional coupling mechanisms
Solution Approach 1:
The connection system is divided into modular components: a motor mounting assembly positioned above the ice bucket, a flexible coupling element, and an agitator connection assembly. This segmentation allows the motor to be protected from water while the coupling element handles the mechanical connection, reducing overall system complexity compared to trying to create a waterproof direct connection.
3Strength
If the agitator is designed for robust connection to handle high torque, then torque capacity is improved, but easy disengagement for maintenance becomes difficult
Solution Approach 1:
The connection between the agitator and drive mechanism uses a dynamic coupling system that can transition between engaged and disengaged states. The flexible coupling element maintains strong torque transfer during operation but allows for easy release through a simple actuation mechanism, enabling maintenance personnel to disconnect the agitator without requiring excessive force or complex procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a reliable and efficient ice dispensing mechanism that minimizes slipping and maintains performance by ensuring a secure torque transfer while allowing easy access and maintenance, reducing the risk of damage from liquid water and improving user experience.
Implementation Method 1
utilizing a spring to bias the fork into engagement
Implementation Method 2
a lever to facilitate disengagement
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An ice making assembly (158) includes an ice bucket164with an agitator (192) rotatably mounted within the ice bucket (164). The agitator (192) is rotated by a dispenser motor (182). The agitator (192) is coupled to the dispenser motor (182) via a fork (200) connected to the motor (182) and a socket (300) connected to the agitator (192). The fork (200) is selectively engagable with the socket (300), and the fork (200) transfers torque from the dispenser motor (182) to the agitator (192) via the socket (300) when the fork (200) engages the socket (300). The ice making assembly (158) may be provided in a refrigerator appliance (100).