Multiple User Lockbox with Aligned Apertures for Padlock Shackles
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Solution Overview
Problem
Existing safety lockout devices often require multiple keys for authorization, which can be cumbersome and insecure, especially when multiple technicians need to access equipment for maintenance or operation, as they rely on key-operated mechanisms that lack secure storage and management for multiple users.
Innovation Solution
A lockbox design with multiple locking points and compartments that require cooperation from multiple authorized users to open, using padlock shackles through aligned apertures to secure the lid in a closed position, ensuring that each user's key is stored securely and can only be accessed by their corresponding padlock, preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a key-operated lockout mechanism is used to restrict access to equipment, then security and safety are improved, but the ability to accommodate multiple authorized users becomes cumbersome and complex
Solution Approach 1:
The lockbox is divided into multiple compartments, each assigned to a specific authorized user. Each compartment has its own key slot that accepts only that user's key, allowing multiple users to independently access their respective keys without interfering with each other. This segmentation resolves the contradiction by maintaining security through individual access control while simplifying the system compared to complex multi-key mechanisms.
Solution Approach 2:
The lockbox serves multiple functions: it stores multiple keys simultaneously, provides individual access control for each user, and requires all padlocks to be unlocked before any key can be accessed. This multi-functionality addresses the contradiction by accommodating multiple authorized users within a single unified device, improving security while avoiding the need for separate locking mechanisms for each user.
2Reliability
If multiple keys are stored in a single lockbox requiring multiple padlocks, then security and authorization control are improved, but the ease of access for individual users deteriorates
Solution Approach 1:
The internal storage space is segmented into multiple independent compartments, each accessible through its own key slot. Each user inserts their specific key into their designated slot, which independently actuates their assigned padlock. This allows each user to access their key without needing to know or interact with other users' keys, maintaining security while improving ease of operation through intuitive individual access.
Solution Approach 2:
Each user has direct control over their own key through their dedicated key slot and compartment. The system is designed so that each user can independently insert their key, unlock their padlock, and retrieve their key without requiring assistance from or knowledge of other users. This self-service approach resolves the contradiction by making the system easy to operate for each individual while maintaining collective security through the requirement that all padlocks must be unlocked.
3Reliability
If padlock shackles are inserted through aligned apertures to secure the lid, then the security and prevention of unauthorized access are improved, but the device complexity and number of components increase
Solution Approach 1:
The padlock shackles from multiple users are combined together, all inserted through a single common aperture in the lid. This merging approach allows multiple padlocks to work together as a unified locking system, where all shackles must be removed before the lid can be opened. This resolves the contradiction by providing enhanced security through multiple locking points while avoiding the complexity of multiple separate apertures and locking mechanisms.
Solution Approach 2:
The common aperture serves multiple functions: it accepts padlock shackles from all authorized users, provides a unified locking point for the lid, and enables the collective security requirement that all padlocks must be removed before access is granted. This multi-functional design addresses the contradiction by achieving high security through a simple, unified structure rather than complex multi-aperture systems.
Data Source
AI summary
A lockbox includes a body and a lid connected to body and pivotable between a closed position and an open position. The body defines an enclosure and includes a body aperture and the lid includes a first lid aperture positioned adjacent to the body aperture when the lid is in the closed position, such that insertion of a padlock shackle through the body aperture and the lid aperture prevents pivoting movement of the lid from the closed position to the open position. The lockbox includes a slot intersecting one of the body aperture and the lid aperture for insertion of an item into the enclosure when the lid is in the closed position. A padlock shackle inserted through the body aperture and the lid aperture prevents passage of an item through the slot.