L-Shaped Terminal Insulating Structure for Compact Shielding
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Solution Overview
Problem
Conventional shield structures for L-shaped terminals lack an insulator between the shield shell and the terminal, leading to increased size and complexity, and require bolting for fixation, which is not simple or reliable.
Innovation Solution
An insulating structure with split inner housings that cover both the electric contact and wire connection portions of the L-shaped terminal, providing electromagnetic shielding and secure fixation without the need for bolting, allowing the shield shell and housing to be positioned closely without wasting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no insulator is provided between the shield shell and the L-shaped terminal, then the structure is simpler, but the size increases and electromagnetic shielding effectiveness deteriorates
Solution Approach 1:
The inner housing is nested inside the shield shell, creating a compact layered structure where the insulating inner housing fits within the conductive shield shell's internal volume, achieving both insulation and space efficiency
Solution Approach 2:
The housing is divided into segmented components: an inner housing with receiving portions for the L-shaped terminal and an outer housing for electromagnetic shielding, allowing each segment to perform its specific function while maintaining compact overall dimensions
2Reliability
If a large space is provided between the shield shell and the L-shaped terminal for insulation, then electrical insulation is improved, but the structure size increases
Solution Approach 1:
The inner housing acts as an intermediary insulating component between the L-shaped terminal and the shield shell, providing reliable electrical insulation while maintaining a compact structure through its optimized geometry and material properties
3Reliability
If bolting is used to fix the L-shaped terminal, then fixation reliability is improved, but the fixation process becomes more complex and time-consuming
Solution Approach 1:
The inner housing's receiving portions are designed to automatically secure the L-shaped terminal through friction fit and geometric constraints, allowing the terminal to be fixed without external fastening operations like bolting
Solution Approach 2:
The mechanical fastening system (bolting) is replaced with a form-fit connection system where the receiving portions' geometry and surface characteristics provide secure fixation through friction and geometric interlocking
4Volume of stationary object
If the shield shell and conductive housing are positioned close to the L-shaped terminal, then space is saved, but electrical insulation deteriorates without an insulator
Solution Approach 1:
The inner housing serves as an intermediary insulating element that enables the shield shell and conductive housing to be positioned close to the L-shaped terminal while maintaining adequate electrical insulation through its material properties and geometric design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables a compact, reliable electromagnetic shielding of the L-shaped terminal, prevents terminal movement, and simplifies fixation, while allowing for easy adjustment of the number of inner housings to match the number of shielded wires, reducing component count and cost.
Implementation Method 1
The L-shaped terminal is insulated by the inner housing from the shield shell and the conductive housing
Implementation Method 2
A plurality of the electric-contact-portion-side receiving portions is covered and received by a conductive shield shell, and a plurality of the wire-connection-portion-side receiving portions is covered by a conductive housing connected to the shield shell and to a shield portion of the shielded wire
Data Source
AI summary
To electromagnetically-shield an L-shaped terminal in a compact and reliable manner while easily and securely fixing the L-shaped terminal, there is employed an insulating split inner housing having an L-shaped terminal receiving portion including an electric-contact-portion-side receiving portion covering an electric contact portion of the L-shaped terminal connected to a shielded wire and a wire-connection-portion-side receiving portion covering a wire connection portion of the L-shaped terminal, the electric-contact-portion-side receiving portion is covered by a conductive shield shell, the wire-connection-portion-side receiving portion is covered by a conductive housing connected to the shield shell and to a shield portion of the shielded wire, and the L-shaped terminal is insulated by the inner housing from the shield shell and the conductive housing.