Gravimetric Measuring Device Cover Module Locking Mechanism
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Solution Overview
Problem
Existing gravimetric measuring devices face challenges in securely attaching cover modules to the support structure, leading to potential unauthorized removal due to insecure locking mechanisms.
Innovation Solution
The implementation of locking cantilevers with vertically directed through-openings aligned with corresponding openings in the support structure, using locking rods to securely lock the cover modules in place, preventing horizontal removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If latching cantilevers are used to attach cover modules to the support structure, then the cover modules can be easily assembled, but the locking mechanism becomes insecure and allows unauthorized removal
Solution Approach 1:
A locking rod is introduced as an intermediary element between the cover module and support structure. The locking rod passes through aligned through-openings in both components, creating a positive mechanical interlock that prevents unauthorized removal while maintaining ease of assembly through the pre-positioned latching cantilevers
Solution Approach 2:
The locking mechanism is segmented into distinct functional elements: latching cantilevers for initial positioning and alignment, through-openings for access, and locking rods for secure fixation. This segmentation allows each element to perform its specific function optimally while working together as an integrated system
2Reliability
If high forces are applied to prevent unauthorized removal of cover modules, then security is improved, but the filigree components are damaged
Solution Approach 1:
Instead of relying on high forces applied to the fragile filigree components themselves, the locking function is copied to a separate, stronger locking rod element. The locking rod bears the mechanical load of preventing removal, while the delicate cover modules and support structure remain unaffected by high forces
Solution Approach 2:
The locking rod serves as a mediator that transfers the security function from the fragile filigree components to a more robust element. This intermediary structure allows secure locking without subjecting the delicate components to damaging forces
3Ease of operation
If latching cantilevers are made accessible for removal, then ease of disassembly is improved, but unauthorized removal becomes possible
Solution Approach 1:
The latching cantilevers perform a preliminary action of positioning and alignment before the final locking step. This preliminary positioning enables controlled disassembly by authorized personnel who know the sequence, while the subsequent locking rod application prevents unauthorized removal attempts
4Reliability
If through-openings are aligned vertically in locking cantilevers, then secure locking with locking rods is achieved, but the assembly precision requirements increase
Solution Approach 1:
The latching cantilevers perform a preliminary positioning function that pre-aligns the cover module with the support structure before the locking rod is inserted. This preliminary alignment reduces the precision requirements for the final locking step, making vertical through-opening alignment more achievable
Data Source
AI summary
A gravimetric measuring device includes a weighing chamber with a vertical weighing chamber wall, which is formed as a support structure (14) with cover modules (28) detachably fixed thereto on the weighing chamber side, each cover module (28) having, on its weighing chamber side, a module front wall (30) covering the support structure (14) at least partially. The cover modules (28) have locking cantilevers (38) directed towards the support structure such that the locking cantilevers (38) are provided with vertically directed through-openings (40) which are aligned with corresponding through-openings (20, 22) of the support structure (14). The cover modules (28) are locked to the support structure (14) with locking rods (42) which pass through the mutually aligned through-openings (40; 20, 22) of the cover modules (28) and the support structure (14).