Refrigerator Operating Unit Plug Connection for Simplified Assembly
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Solution Overview
Problem
The complex and time-consuming assembly process of the operating unit in refrigerators and freezers due to the manual connection with a filigree edge connector, which requires careful handling and limited space, and the need for cable management, also complicates maintenance by requiring power supply disconnection.
Innovation Solution
A self-centering plug connection system where the control unit and body have pre-assembled plug parts that automatically connect when inserted, eliminating the need for cable laying and providing locking means for secure contact, allowing for quick and simple installation and de-energization upon removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cable with edge connector is used to connect the control unit to the power supply, then the control unit can be powered and communicate, but the assembly process becomes complex and time-consuming requiring manual connection and cable management
Solution Approach 1:
The patent merges the connector and cable into an integrated plug connection system. The control unit housing includes a built-in plug that directly connects to a socket in the appliance body, eliminating the need for separate cable routing and manual connector attachment. This integration simplifies the assembly process while maintaining reliable electrical and data connections.
Solution Approach 2:
The patent segments the connection system into modular plug and socket components that are pre-assembled into the control unit housing and appliance body respectively. This segmentation allows for automated assembly of the connection system and simplifies maintenance, as the control unit can be easily disconnected and reconnected without handling complex cable assemblies.
2Manufacturing precision
If manual connection with filigree edge connector is used, then precise electrical contact can be achieved, but the installation requires great care and is time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-assembling the plug connection system into the control unit housing during manufacturing. The plug is integrated into the housing structure with built-in alignment features that ensure precise contact with the socket, eliminating the need for careful manual alignment during installation. This pre-prepared configuration maintains manufacturing precision while dramatically reducing installation time.
Solution Approach 2:
The plug connection system is designed with self-aligning features including guide pins and tolerance compensation mechanisms that automatically ensure precise contact between connector components. The system serves itself by automatically achieving proper alignment and contact pressure without requiring operator skill or attention, thus maintaining precision while reducing installation time and complexity.
3Reliability
If cable is routed from appliance housing to ceiling, then power supply connection is established, but the installation space requirements increase and assembly becomes more complex
Solution Approach 1:
The patent implements the nesting principle by integrating the plug connection system within the control unit housing itself. The plug is housed in a dedicated compartment that is part of the control unit structure, and the socket is integrated into the appliance body housing. This nested arrangement eliminates the need for separate cable routing through the appliance ceiling, reducing installation space requirements while maintaining reliable power and data connections.
Data Source
Figure 1a~1c
Figure 2~3
Figure 4
AI summary
A refrigerator and/or freezer with a cooled interior arranged in a body (10), with a locking element by means of which the interior can be closed, and with an operating unit (30) arranged on the body (10), wherein the operating unit (30) has a first plug part and the body (10) and/or the locking element has a second plug part, which are arranged such that the two plug parts automatically form a plug connection when the operating unit (30) is inserted into the body (10) or into the locking element.