Roll-up Door Locking Device with Ball Pin Bolt
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Solution Overview
Problem
Existing locking mechanisms for roll-up doors on cargo vehicles, such as padlocks, can be easily compromised by thieves, allowing unauthorized access to the cargo.
Innovation Solution
A locking device comprising an anchor fitting, a locking bolt with ball pins, and a key tool, which is installed by drilling a hole through the cargo vehicle's exterior and into the roller track, providing a secure and tamper-proof mechanism to prevent the door from being opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a padlock is used to secure the roll-up door, then the door can be locked, but it can be easily cut or compromised by thieves
Solution Approach 1:
The locking mechanism is divided into multiple components: an anchor fitting with hollow portion, a locking bolt with threaded portion, and ball pins. This segmentation creates a more complex system that cannot be easily compromised by simple cutting methods used on padlocks.
Solution Approach 2:
The locking bolt is inserted into and nested within the anchor fitting's hollow portion. The ball pins are positioned within the locking bolt structure. This nested arrangement creates a compact, integrated locking system that is harder to access and compromise than external padlocks.
2Reliability
If a traditional locking mechanism is used, then the locking function is provided, but it is easily identified and targeted by thieves
Solution Approach 1:
The locking device is integrated with the roller track structure itself. The anchor fitting is positioned within the roller track, and the locking bolt operates within this integrated structure. This merging makes the locking mechanism less visually distinct and harder for thieves to identify as a separate target compared to traditional external padlocks.
Solution Approach 2:
The roller track structure serves as an intermediary that houses and conceals the locking components. Rather than having an exposed padlock, the locking mechanism is mediated through the roller track structure, making it less obvious to potential thieves.
3Ease of operation
If the locking bolt can be easily removed, then the door can be opened quickly, but it allows unauthorized access if the primary lock is compromised
Solution Approach 1:
The ball pins are designed to be movable between engaged and disengaged positions. When the locking bolt is being installed or removed, the ball pins can be dynamically positioned to allow or prevent removal. This dynamic mechanism provides security during normal operation while allowing controlled access when needed.
Solution Approach 2:
The state of the locking mechanism changes based on the position of the ball pins. When engaged, the ball pins prevent bolt removal; when disengaged, they allow removal. This parameter change (position of ball pins) controls both security and operability states of the locking system.
Data Source
AI summary
A locking device for preventing a cargo door from opening. The locking device includes an anchor fitting, a locking bolt and a key tool. The anchor fitting can be installed through the exterior wall of a cargo vehicle and has an elongated body and a hollow portion to receive the locking bolt. When fully inserted through the anchor fitting, the locking bolt is tightened by the key tool and extends through the anchor fitting to block the movement of the cargo door.