Cooling Box Latch Handle for One-Handed Lid Opening
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Solution Overview
Problem
Existing mobile cooling boxes are cumbersome to open, especially when using only one hand, as the lid must be lifted and removed entirely, requiring both hands for access and storage, which is inconvenient during outdoor activities or when carrying items.
Innovation Solution
A mobile cooling box with a latch handle module that integrates an actuating element and locking element, allowing the lid to be pivoted open with one hand, featuring a snap-in latch mechanism and ergonomic design for easy operation, and a spring-loaded mechanism for secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bracket is used to lock the lid from being lifted, then the lid can be securely locked, but the opening operation becomes cumbersome and requires both hands
Solution Approach 1:
The locking function is segmented from the lid body and integrated into a separate latch handle module. This module includes a locking element that can be independently actuated, allowing the lid to remain attached to the box while being securely locked. The segmentation enables one-handed operation as the latch handle can be manipulated separately from the lid itself.
Solution Approach 2:
The latch handle module acts as an intermediary mechanism between the user and the lid locking system. Instead of directly manipulating the lid or a fixed bracket, the user operates the latch handle which then controls the locking element. This intermediary provides ergonomic leverage and mechanical advantage, making the locking operation easier while maintaining security.
2Device complexity
If the lid merely lies on the top rim of the box main body, then the structure is simple, but the lid must be completely removed and managed by the user during opening
Solution Approach 1:
The latch handle module is integrated into the lid structure, merging the locking mechanism with the lid assembly. This integration allows the lid to remain attached to the box main body through the hinge while the latch handle provides independent locking control. The merging eliminates the need for complete lid removal and manual handling during opening operations.
3Reliability
If a bracket pivots over the entire lid to release it, then the lid can be unlocked, but the operation is uncomfortable and cumbersome especially with one hand
Solution Approach 1:
The unlocking function is segmented into a localized latch handle module rather than requiring manipulation of a bracket spanning the entire lid. The locking element within the latch handle can be independently actuated with minimal movement, providing ergonomic one-handed operation while maintaining secure locking through the engageable counterpart on the box main body.
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
Enables comfortable and reliable one-handed opening and closing of the mobile cooling box, improving user convenience and reducing the need to manage the lid during loading and unloading.
Implementation Method 1
a spring-loaded mechanism for secure closure
Data Source
AI summary
A mobile cooling box has a box main body and at least one lid for providing access to the inside of the mobile cooling box. At one side edge the lid is hinged to the box main body so that the lid is pivotable from a closed position to an open position. The mobile cooling box further has a latch handle module for manually locking and unlocking the lid. The latch handle module is integrated in the lid and located at another side edge of the lid. The latch handle module comprises an actuating element that is manually operable by the user, a locking element that is engageable with a corresponding counterpart located at the box main body in order to lock the lid from being opened and a casing, and the latch handle module provides a mechanism for locking and unlocking the lid. According to the mechanism for locking and unlocking the lid the actuating element and the locking element are mechanically connected to each other and, by operating the actuating element by the user, the locking element disengages with the corresponding counterpart located at the box main body and allows opening the lid.