Insulated Food Cabinet Hinge and Seal Structure for Leak Control
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Solution Overview
Problem
Insulated transport cabinets face issues with hinge durability, seal effectiveness, and latch functionality due to frequent use, leading to damage and inefficiency in maintaining temperature and preventing fluid leaks.
Innovation Solution
The insulated transport cabinet features a robust hinge and sealing structure with a barrel portion and cap system to prevent hinge pin disengagement, and a latch with elastomeric material and a unique rib and groove configuration for fluid-tight sealing, allowing for easy door operation and maintaining the closed position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hinge structure is used, then the door can pivot freely, but the hinge pin may disengage or become damaged due to frequent use
Solution Approach 1:
The hinge barrel is divided into top and bottom sections with a pin retention feature that segments the retention function from the pivoting function, allowing the pin to be retained securely while the door continues to pivot freely
Solution Approach 2:
A pin retention feature acts as an intermediary mechanism between the hinge pin and the barrel, providing a mechanical stop that prevents pin disengagement while allowing the door to pivot normally
2Device complexity
If a simple door seal is used, then the structure remains simple, but fluid leaks occur during door operation
Solution Approach 1:
The seal groove is positioned and oriented to dynamically accommodate the door's movement during pivoting, allowing the seal to maintain continuous contact with the door periphery throughout the opening and closing cycle, preventing fluid leaks while enabling full door operation
3Productivity
If frequent door operation is allowed, then accessibility is improved, but the hinge and seal components become damaged
Solution Approach 1:
The pin retention feature provides preemptive protection against pin disengagement by establishing a mechanical stop before any damage can occur, enabling frequent operation without compromising hinge reliability
Solution Approach 2:
The dynamically positioned seal groove maintains effective sealing throughout the entire range of motion, allowing frequent door operations without seal damage or fluid leakage
Data Source
AI summary
The present disclosure provides an insulated transport cabinet for food or the like having a housing, a door, a hinge cover, and a hinge pin. The housing includes a barrel portion adjacent to a front surface and extending between top and bottom ends. The barrel portion includes a longitudinal axis, a gap separating the barrel portion into top and bottom barrel sections having first and second passageways aligned with the longitudinal axis, respectively. The door includes a hinge adjacent to a side surface and including a third passageway aligned with the longitudinal axis. An inner surface of the hinge pin complements an outer surface of the hinge. The hinge pin passes through the first, third, and second passageways. The door pivots about the longitudinal axis between an open position and a closed position. The longitudinal axis is offset from a center plane of the door.