Lockable Container Cover With Spring Retaining Hooks
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Solution Overview
Problem
Existing containers with hinged covers are difficult to lock and unlock efficiently.
Innovation Solution
A container design featuring retaining hooks on opposing walls with spring elements, allowing for easy locking and unlocking of cover halves through manual manipulation, and incorporating projections for maintaining the open position of the covers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional locking mechanisms are used for containers with hinged covers, then the container provides basic closure functionality, but the locking and unlocking process becomes time-consuming and operationally complex
Solution Approach 1:
The locking mechanism is segmented into multiple independent retaining hooks distributed along the upper edges of opposing walls. Each hook can be individually actuated by inserting a finger into its opening, allowing selective locking/unlocking of different cover halves. This segmentation enables quick, independent operation of each locking point without requiring complex coordinated movements.
Solution Approach 2:
The retaining hooks are equipped with spring elements that automatically return the hooks to their locked position after being pushed inward. When a finger is inserted into the opening of a retaining hook, it pushes the hook inward to unlock; upon releasing the finger, the spring automatically returns the hook to its original locked position. This self-service mechanism eliminates the need for additional locking actions and simplifies the operation to a single push motion.
2Reliability
If multiple retaining hooks are used to secure cover halves, then the locking security is improved, but the device complexity increases
Solution Approach 1:
Multiple retaining hooks are merged into a unified locking system where all hooks follow the same simple design pattern: a body with an opening for finger insertion and a spring element for automatic return. This standardization across multiple hooks maintains reliability through redundancy while avoiding complexity by using identical, simple components throughout the system.
Solution Approach 2:
Each retaining hook incorporates a spring element that automatically returns the hook to its locked position after being pushed inward. This self-service feature eliminates the need for complex return mechanisms, multiple actuators, or coordinated movements across different hooks. The spring-driven automatic return simplifies each individual hook while maintaining secure locking through the presence of multiple hooks.
3Reliability
If retaining hooks are positioned to effectively lock cover halves, then the locking effectiveness is improved, but the container height increases
Solution Approach 1:
Instead of having the retaining hooks protrude outward from the container walls to engage with the cover halves, the design inverts the approach: the hooks are positioned on the container walls and extend inward toward the container center. The openings in the cover halves receive these inward-extending hooks, allowing effective locking while keeping the hooks contained within the container's height envelope.
Solution Approach 2:
The retaining hooks are nested within the container structure, with their bodies mounted on the inner surfaces of the opposing walls and their engaging portions extending inward. The openings in the cover halves are positioned to receive these nested hooks, creating a compact arrangement where the locking mechanism is integrated within the container's existing height rather than adding to it.
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 design enables quick and secure locking/unlocking with minimal height impact, facilitating easy stacking and secure storage without gaps, and allows for additional sealing with lead seals.
Implementation Method 1
the retaining hooks are each connected to a spring element which is preloaded when the retaining hook moves towards the center of the container wall, so that it is spontaneously moved back again by the spring force after the retaining hook has moved towards the center
Data Source
AI summary
A container includes two cover halves outwardly and inwardly pivotable via hinges. Retaining hooks for locking the cover halves are arranged at the upper edges of two walls. The cover halves have openings along their sides for receiving the retaining hooks. Moving the retaining hook toward the center of the side walls preloads a spring element. For locking, the cover halves are pivoted inward and pressed onto the retaining hooks, which slide toward the center of the side walls and penetrate into the openings. The retaining hooks are moved back and snap in on the top side of the cover halves. Protrusions on the retaining hooks and on the underside of the cover halves raise and keep the cover halves raised during unlocking.