Refrigerator Door Cap Assembly With Hidden Coupling Border
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Solution Overview
Problem
The existing coupling structure of a refrigerator's door plate and door cap exposes a border on the front surface, compromising the external appearance and allowing foreign materials to accumulate.
Innovation Solution
A door assembly design where the door cap is supported by a fixed coupling portion behind a bent portion of the door plate, with a gripping groove and protrusion ribs ensuring the border is not exposed, and coupling hooks and holes secure the door cap without visible exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the door cap is directly coupled with the door plate, then the structure is simple and easy to manufacture, but the coupling border is exposed on the front surface deteriorating appearance quality
Solution Approach 1:
A door cap support is introduced as an intermediary component between the door cap and door plate. The support includes a coupling portion that connects to the door cap and another portion that couples to the door plate, thereby mediating the connection and hiding the coupling border from the front surface view.
Solution Approach 2:
The coupling structure is moved from the front surface dimension to the rear surface dimension. The coupling portion is positioned at the rear surface of the door plate, so the coupling border between door cap and door plate is located in a dimension that is not visible from the front, thus resolving the appearance issue.
2Object-affected harmful factors
If the door cap is directly coupled with the door plate, then the manufacturing process is simple, but foreign materials can be collected through the coupling border
Solution Approach 1:
The door cap support acts as an intermediary that eliminates the direct coupling border between door cap and door plate. By introducing this intermediate component, the harmful effect of foreign material accumulation is prevented while maintaining manufacturing feasibility through standardized coupling mechanisms.
3Shape
If a coupling portion is positioned behind the bent portion, then the coupling border is hidden from view, but the structure becomes more complex
Solution Approach 1:
The door cap support serves multiple functions simultaneously: it provides structural support for the door cap, creates the coupling mechanism between door cap and door plate, and positions the coupling border at the rear surface to hide it from view. This multi-functionality reduces the need for separate components for each function.
4Shape
If the door cap support is fixed at the bent portion, then the coupling border is not exposed, but the manufacturing precision requirements increase
Solution Approach 1:
The design changes the positional parameter of the coupling portion from the front surface to the rear surface of the door plate. This parameter change allows the coupling border to be hidden while using standard manufacturing tolerances for the coupling mechanisms, avoiding the need for excessively tight precision requirements.
Data Source
AI summary
A refrigerator wherein a front part of a storage chamber opens; and a door assembly is rotatably coupled with a main body, and configured to open and close the open front part of the storage chamber, wherein the door assembly includes a door plate including a front plate and a side plate bent in a rear direction from both side edges of the front plate, wherein a bent portion is formed in an upper end of the front plate, a door cap is configured to cover a top of the door plate, wherein a gripping groove is formed between the door cap and the bent portion, the griping groove opening in a up direction; and a door cap support includes a coupling portion coupled with the door cap, and is fixed at the bent portion such that the coupling portion is positioned behind the bent portion.