Removable Hinge Pin With Recessed Gripping Portion
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Solution Overview
Problem
Removable hinges in electrical enclosures often provide unintended access to components, and existing designs lack secure tamper-proof features while being easy to manufacture and facilitate maintenance.
Innovation Solution
A hinge apparatus with a hinge body comprising a first and second knuckle portion that defines a tubular opening, featuring a recess and a gripping portion on the hinge pin, which is inaccessible when closed but removable when the hinge is opened, ensuring secure closure and easy disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a removable hinge design is used to facilitate maintenance and door removal, then ease of operation is improved, but security against unintended access deteriorates
Solution Approach 1:
The hinge pin is segmented into two functional portions: an axial portion that rotates within the knuckle opening to enable door movement, and a gripping portion that extends into a recess to provide tamper-proof security when closed. This segmentation allows the hinge to simultaneously achieve ease of operation during normal use while preventing unintended access when closed.
Solution Approach 2:
The gripping portion of the hinge pin is pre-positioned within the recess in a locked state during normal operation. This preliminary securing action prevents unintended access to components behind the door. When door removal is intentionally required, the gripping portion can be manually extracted from the recess, allowing the hinge to transition from secured to operational state.
2Ease of operation
If the hinge pin is fully accessible for easy removal, then ease of operation is improved, but security against tampering deteriorates
Solution Approach 1:
Different portions of the hinge pin have different accessibility qualities: the axial portion is accessible and rotatable for normal door operation, while the gripping portion is concealed within the recess and inaccessible during closed operation. This local differentiation of accessibility provides both ease of operation and tamper-proof security simultaneously.
3Object-affected harmful factors
If a secure tamper-proof hinge design is implemented, then security is improved, but device complexity increases
Solution Approach 1:
The gripping portion and axial portion are combined into a single integrated hinge pin component, eliminating the need for separate locking mechanisms, multiple pins, or complex assembly procedures. This merging achieves tamper-proof security through the simple geometric configuration of the gripping portion within the recess while maintaining manufacturing simplicity and structural elegance.
Data Source
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AI summary
Embodiments of the invention provide a hinge apparatus that can include a hinge body having a first portion and a second portion and a hinge pin. The hinge pin can include an axial portion and a gripping portion. The hinge body can include a recess in one of the first portion and the second portion. The recess in the hinge body can receive the gripping portion of the hinge pin to inhibit access to the gripping portion when the hinge body is in the closed position. The gripping portion can be removed from the recess as the hinge body is moved to the open position.