Cooling Door Handle Locking Mechanism for Tool-Free Assembly
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Solution Overview
Problem
Existing cooling device handles require multiple fixing elements and tools for assembly, increasing labor and component costs.
Innovation Solution
A locking mechanism featuring a ring-shaped retainer, detent means, and carrier with extensions and a stopper, allowing the handle to be securely attached to the door without tools, using plastic components for easier assembly and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple fixing elements and tools are used to mount the handle, then the connection strength between handle and door is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple fixing functions into a single integrated locking mechanism. The locking mechanism includes a locking element, a spring element, and a cam element that work together as one unit to secure the handle to the door, eliminating the need for separate fixing elements and tools while maintaining strong connection.
Solution Approach 2:
The locking mechanism is designed to be self-actuating through spring-loaded engagement. When the handle is installed, the spring element automatically pushes the locking element into engagement with the door, and the cam element converts rotational motion into linear locking motion without requiring external tools or additional fixing operations.
2Reliability
If multiple fixing elements and tools are used to mount the handle, then the reliability of handle fixation is improved, but the labor cost and assembly time increase
Solution Approach 1:
The spring element provides automatic engagement force that ensures reliable fixation without requiring manual tightening or additional fixing steps. The locking element self-actuates upon installation, and the cam element automatically secures the position, eliminating the need for tools and reducing assembly time to a single snapping motion.
Solution Approach 2:
The spring element is pre-loaded during manufacturing to provide the necessary engagement force. The locking mechanism is pre-configured with the cam element positioned to convert any rotational input into immediate linear locking action, so that upon installation, the handle automatically locks into place without requiring any additional actions from the assembler.
3Ease of operation
If a simple mounting structure is used, then the ease of assembly is improved, but the connection strength and reliability may be compromised
Solution Approach 1:
The locking mechanism uses a spring element that provides dynamic engagement force, automatically adjusting to ensure strong connection. The cam element converts simple rotational motion into linear locking motion, maintaining ease of assembly while ensuring reliable mechanical engagement through the interaction of the locking element with the door features.
Data Source
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AI summary
The present invention relates to a cooling device (1) comprising at least one cabinet (2) wherein the foodstuffs to be cooled are placed, at least one door (3) providing access into the cabinet (2), at least one handle (4) providing the opening/closing of the door (3), at least one housing (5) located on the door (3), at least one support member (6) that is arranged on the surface of the handle (4) facing the door (3) and that aligns with the housing (5) while the handle (4) is being fixed to the door (3) and at least one locking mechanism (7) providing the mounting of the handle (4) to the door (3), and of which the handle (4) can be easily fixed to the door (3).