Verification Cap Design for Regulatory Compliance Weighing Scales
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Solution Overview
Problem
Current weighing scales require extensive effort and expense for verification status checks, as verification marks are typically internal, necessitating opening of the housing and often requiring a trained technician, which can lead to damage and increased costs.
Innovation Solution
The design features a verification cap with a visible verification mark and a removable locking element that allows access to compliance-relevant components without opening the housing, enabling external examination and simplifying the verification process while allowing changes to be made without compromising the verified status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If verification marks are placed inside the housing, then the verification status can be confirmed, but the housing must be opened by a trained technician which increases cost and risk of damage
Solution Approach 1:
The verification mark is moved from the internal dimension (inside the housing) to the external dimension (on the housing exterior). This allows the verification status to be confirmed from the outside without opening the housing, eliminating the need for trained technicians and reducing the risk of damage while maintaining reliable verification.
2Ease of operation
If the housing is opened to access components, then compliance-relevant components can be accessed, but the verification mark is destroyed and the instrument loses verified status
Solution Approach 1:
The housing is segmented into a verification-relevant part (components covered by the verification cap) and a verification-irrelevant part (other components). The verification cap with its locking element provides controlled access to the relevant components. This segmentation allows routine access to non-critical components without affecting the verification status, while maintaining secure protection of compliance-relevant components.
3Reliability
If a verification cap with locking element is used, then the verification status is protected, but the locking element must be removed to access components which complicates the process
Solution Approach 1:
The locking element is extracted as a separate, removable component from the verification cap assembly. This allows the locking element to be removed independently to access components, while the verification cap remains in place to maintain the verified status. The extraction of the locking element provides simple, controlled access without compromising the verification protection.
Data Source
AI summary
An instrument having components that are relevant as well as components that are not relevant to regulatory compliance, and a housing serving to accommodate the components, wherein the components that are relevant to regulatory compliance are arranged in the housing under a verification cap, so that they can only be accessed by removing the verification cap, and wherein the verification cap is secured with a verification mark in such a way that removing the verification cap will cause the verification mark to be destroyed. In this arrangement, the verification cap is fastened with at least one locking element, the components that are relevant to regulatory compliance are accessible only after the locking element has been removed, and at least one locking element is designed so that it can be removed while the housing remains closed.