Refrigerator Home-Bar Door Damper for Stable Opening and Support
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Solution Overview
Problem
The existing home-bar door apparatus in refrigerators faces issues with secure damper installation, weakened support at the ends, frequent replacement of dampers due to rotational shaft damage, and difficulty in initial opening due to pressure differences and adhesion forces.
Innovation Solution
A home-bar door apparatus with dampers mounted to the rear face of the home-bar frame, featuring orthogonal damper mount plates, a stop rib for regulating the degree of opening, and a damper design with a rotating part, elastic member, and damping fluid to control opening/closing speed and prevent abrupt opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotational shaft protrudes from the damper and is installed in the home-bar frame to support the entire load, then the home-bar door can be supported, but the coupled state may be released due to long-term use or impact
Solution Approach 1:
The support function is divided between the rotational shaft and the stopping structure. The rotational shaft provides rotational support while the stopping structure positioned at the lower end provides load-bearing support, preventing the rotational shaft from bearing the entire load and maintaining coupled state stability
Solution Approach 2:
The stopping structure acts as an intermediary element between the home-bar door and the home-bar frame. It transfers the load from the door to the frame, reducing the burden on the rotational shaft and preventing coupled state release
2Reliability
If the stopping structure is positioned far from the both ends of the home-bar door, then the door can be supported when opened, but the strength supporting the both ends is relatively weakened
Solution Approach 1:
The stopping structure is extended in the width direction of the home-bar door, changing from a single-point support to a distributed support across multiple dimensions. This provides both end support and central support simultaneously, maintaining both end strength and overall stability
3Reliability
If the rotational shaft is damaged due to the load of the home-bar door, then the door cannot rotate, but the entire damper must be replaced
Solution Approach 1:
The damper is divided into separable components: the rotational shaft and the damper body. The rotational shaft can be independently replaced without replacing the entire damper, simplifying repair when the shaft is damaged
Solution Approach 2:
The damaged rotational shaft can be discarded and replaced while the functional damper body is recovered and reused. This selective replacement reduces waste and repair costs
4Reliability
If the home-bar door is closed, then much force is needed for initial opening due to pressure difference and adhesion force
Solution Approach 1:
The elastic member is pre-loaded to store elastic energy that acts on the home-bar door during opening. This preliminary energy storage compensates for the adhesion force and pressure difference, reducing the initial opening force required
Solution Approach 2:
The adhesion force between gaskets, which initially resists opening, is overcome by the elastic force from the pre-loaded elastic member. The sealing function is maintained while the opening difficulty is converted into a controlled mechanical advantage
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
The solution provides a secure installation state for the damper, enhances durability and replaceability, and stabilizes the opening/closing speed of the home-bar door, ensuring smooth operation and improved reliability.
Implementation Method 1
a damping fluid filled in the seating space
Implementation Method 2
an elastic member for exhibiting an elastic force in an opening direction in an initial opening stage and in a closing direction in a last opening stage
Data Source
AI summary
A home-bar door apparatus includes a home-bar door that selectively opens or closes an opening formed in a home-bar frame and has rotational shafts protruding at both sides of a lower portion thereof and a catching step formed along a lower end thereof, dampers that are installed on a rear face of the home-bar frame and control an opening/closing speed of the home-bar door by receiving the rotational shafts of the home-bar door therein so that the rotational shafts of the home-bar door can be relatively rotated, and a stop rib that is formed laterally along a lower end of a groove formed around a periphery of the opening and has stopping steps formed at positions corresponding to both ends of a catching step of the home-bar door so that the catching step can be caught by the stopping steps.