Tamper-Protected Terminal Housing with Deflection Plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Industrial devices, such as ovens, require secure internal wiring to prevent tampering while allowing easy access for maintenance, as conventional solutions fail to balance user accessibility with protection against unauthorized access.
Innovation Solution
A terminal housing apparatus with a removable terminal plate, featuring a deflection surface and slots that allow authorized personnel to access internal wiring by using a deflection tool, while obscuring removal for unauthorized users, and includes a stop plate to resist vibration and secure the plate in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the terminal plate is made removable for maintenance access, then ease of repair is improved, but reliability deteriorates due to potential tampering by unauthorized users
Solution Approach 1:
The terminal plate incorporates a deflection surface with specific geometric properties that create asymmetric engagement with the housing slots. This local structural differentiation allows the plate to be easily removed by authorized personnel using a deflection tool while preventing removal by unauthorized users, thus resolving the contradiction between ease of repair and protection from tampering
Solution Approach 2:
A deflection tool serves as an intermediary element that mediates between the authorized user and the terminal plate. The tool engages with the deflection surface to facilitate controlled removal, while its absence prevents unauthorized removal. This intermediary mechanism enables easy maintenance access for authorized personnel while maintaining security against tampering
2Reliability
If the terminal plate is secured firmly to prevent removal, then protection from tampering is improved, but ease of repair deteriorates due to difficulty in access
Solution Approach 1:
The terminal plate engagement system transitions from a static fixed or removable state to a dynamic state where the plate can be easily moved between engaged and disengaged positions using a deflection tool. The deflection surface geometry enables controlled dynamic movement that appears firmly secured during normal operation but allows rapid access when needed, resolving the contradiction between firm security and easy access
3Ease of operation
If the terminal housing provides full access for wiring, then ease of operation is improved, but protection from harmful factors deteriorates due to exposed internal components
Solution Approach 1:
The terminal housing is segmented into multiple components: the housing body, the removable terminal plate, and internal wiring compartments. This segmentation allows the housing to provide protection during normal operation while enabling controlled access when needed. The terminal plate acts as a segmented barrier that can be selectively removed, resolving the contradiction between operational ease and protection from harmful factors
Data Source
AI summary
Terminal housings, covers, and plate apparatus are disclosed. An example tamper protected terminal housing includes a back wall, a first side wall having a first slot, a second side wall opposite the first side wall and having a second slot, and a removable terminal plate. The removal terminal plate includes a deflection surface connecting a second tab to a planar body, the deflection surface positioned such that a deflection tool can be inserted between the deflection surface and the second side wall when the terminal plate is installed in the housing with the first tab engaged in the first slot and the second tab engaged in the second slot, the side walls configured to deflect at least a first distance to enable disengagement of the second tab from the second slot and removal of the terminal plate from the terminal housing.