Power Meter Housing with Dual Access Openings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power meters with expansion modules face challenges when mounted on a DIN rail, requiring rotation to maintain accessibility of connectors and readability of safety and informational labels, making installation and maintenance difficult.
Innovation Solution
The design includes a base unit housing with both side and rear openings for connector access, allowing expansion modules to be connected through either opening without rotating the base unit, ensuring connectors remain accessible and labels readable regardless of installation orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base power meter unit is rotated 90 degrees to allow expansion modules to be compatible with DIN rail mounting, then expansion capability is improved, but connector accessibility and label readability deteriorate
Solution Approach 1:
The patent introduces a new spatial dimension by providing both rear and side openings in the base unit housing. This allows expansion modules to be accessed from multiple directions (rear and side), enabling DIN rail mounting without rotation while maintaining connector accessibility. The side opening specifically addresses the accessibility issue by providing a lateral access path to connectors that would otherwise require base unit rotation.
Solution Approach 2:
The housing is segmented into multiple access points: a rear opening for expansion module connection and a side opening for connector accessibility. This segmentation allows different functions to be accessed through different openings, resolving the contradiction between expansion capability and connector accessibility by providing dedicated access paths for each function.
2Adaptability or versatility
If the base power meter unit is rotated 90 degrees to allow expansion modules to be compatible with DIN rail mounting, then expansion capability is improved, but label readability deteriorates
Solution Approach 1:
By adding a side opening as an additional access dimension, the patent enables DIN rail mounting in the original orientation while maintaining expansion module accessibility. This preserves the correct orientation of safety and informational labels on the housing front face, preventing label readability loss while still achieving expansion capability.
3Ease of operation
If the base power meter unit is rotated to maintain connector accessibility, then connector accessibility is improved, but installation complexity increases
Solution Approach 1:
The housing is divided into multiple access openings (rear and side) that provide independent access paths to connectors. This segmentation eliminates the need for base unit rotation during installation, as connectors can be accessed directly through the side opening in the standard mounting orientation, thereby reducing installation complexity while maintaining connector accessibility.
4Loss of information
If the base power meter unit is rotated to maintain label readability, then label readability is improved, but installation time increases
Solution Approach 1:
The side opening provides an additional access dimension that allows connectors to be accessed without rotating the base unit. This maintains the correct orientation of labels on the housing front face while eliminating the time-consuming rotation step during installation, thereby improving installation productivity without sacrificing label readability.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
An intelligent electronic device (100) for metering a characteristic of electricity that has a rear opening (214) and a side opening (216) in a housing of the device for accepting a connector of an expansion module through one or the other opening. The device can be configured with an integrated display module (120) that protrudes through a panel of an enclosure, and in this configuration, the expansion module connects to the device through the rear opening of the housing. The device can also be configured to be mounted on a DIN rail, and in this configuration, the expansion module connects through the side opening of the housing. The same module can be used in either configuration, without requiring that different versions of the module be made for the different configurations and without having to mount the device in an awkward orientation that makes it difficult to access external connections around the housing.