Surface-Mountable Locking Device with Tamper-Resistant Cavity
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Solution Overview
Problem
Existing locking mechanisms for securing items to surfaces are vulnerable to tampering with bolt cutters and pry bars, as the locking bolts and anchors are exposed, making them susceptible to unauthorized access and theft.
Innovation Solution
A surface-mountable locking device with a body that protects the locking bolt and anchor from tampering, featuring a bolt that engages a pin within the device's body, and a locking mechanism that includes a sliding joint for secure attachment to surfaces, such as T-nut/T-slot configurations, and capture-member adapters for securing chains or straps, which shield the critical connection points from cutting tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional locking mechanisms with exposed bolts and anchors are used, then the device is simple and easy to manufacture, but the locking mechanism and mounting hardware are vulnerable to tampering with bolt cutters and pry bars
Solution Approach 1:
The locking device employs a nested structure where the locking mechanism is housed within a protective body, and the mounting hardware is concealed within the body or mounting plate. This nesting arrangement protects critical components from external tampering while maintaining a compact form factor.
Solution Approach 2:
The patent introduces intermediate protective structures including a mounting plate and a body that act as mediators between the locking mechanism and the external environment. These intermediaries shield the bolts and anchors from direct exposure to tampering tools while still allowing the locking function to operate.
2Ease of operation
If the locking bolt and anchor are exposed for easy engagement, then the ease of operation is improved, but the vulnerability to bolt cutters and pry bars increases
Solution Approach 1:
The locking device is segmented into distinct functional zones: an engagement interface for easy operation, a protective body for security, and concealed mounting hardware. This segmentation allows the device to provide both ease of use and protection by separating the operational elements from the vulnerable components.
Solution Approach 2:
The device applies local quality by providing protection only where needed - the body and mounting plate cover the bolts and anchors that require security, while leaving the engagement interface accessible. This selective protection maintains operational simplicity while defending critical components.
3Reliability
If the locking mechanism is protected within a body, then protection from tampering is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The body and mounting plate serve multiple functions simultaneously: they protect the locking mechanism from tampering, provide structural support, conceal mounting hardware, and offer a mounting interface for surface attachment. This multi-functionality reduces the need for additional separate components, thereby simplifying manufacturing despite the enhanced protection features.
Data Source
AI summary
A surface-mountable locking system is designed to secure an item to a surface via one or more mechanical engagements that are protected from tampering by encompassing the engagements point(s) within cavity-defining surfaces. In one example the mechanical engagement is effected by placing a pin in a box and securing the pin in the box using a bolt and the tampering protection is effected by the surfaces that define the box. In another example, the mechanical engagement is effected by placing a surface-attached anchor within a cavity and securing the anchor relative to the cavity using a bolt and the tampering protection is effected by the surfaces that define the cavity. The securing bolt may be, for example, the bolt of locking mechanism, a threaded bolt to engage a receptacle having complementary threads, or a smooth bolt to engage a receptacle having a shape complementary to that of the bolt.