Integrated Electromagnetic Shield Member for Wiring Devices
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Solution Overview
Problem
Existing electromagnetic shielding solutions for wiring devices in vehicles require multiple components to shield both the wiring and the connection portions, leading to increased complexity and component count.
Innovation Solution
A compact electromagnetic shielding solution that uses a metal plate member with a cover main body and a fixing piece to sandwich and fix the wiring electromagnetic shield portion, allowing for shielding of both the wiring member and its connection portion with a minimal number of components, including a braided metal strand or bellows-shaped wiring electromagnetic shield portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If separate electromagnetic shield components are used for wiring and connection portions, then electromagnetic shielding coverage is improved, but device complexity and component count increase
Solution Approach 1:
The patent combines the electromagnetic shielding functions for both the wiring member and connection portion into a single integrated shield member. The shield member includes a shield portion that covers the wiring member and a connection portion shield cover that covers the connection portion, eliminating the need for separate shield components and reducing overall device complexity while maintaining comprehensive electromagnetic shielding coverage.
Solution Approach 2:
The shield member is designed as a multi-functional component that simultaneously provides electromagnetic shielding for both the wiring member and its connection portion. The connection portion shield cover is integrally formed with the shield portion, allowing a single component to perform multiple shielding functions that previously required separate parts.
2Device complexity
If a compact shield structure is used to reduce component count, then device complexity is reduced, but shielding effectiveness may be compromised
Solution Approach 1:
The patent merges the shielding functions into a single integrated shield member that maintains effective shielding for both wiring and connection portions. The shield portion and connection portion shield cover are integrally formed, ensuring continuous electromagnetic shielding without gaps while reducing component count.
Solution Approach 2:
The connection portion shield cover is designed to nest over the connection portion while the shield portion covers the wiring member. This nested arrangement ensures that both shielding functions are maintained in a compact, integrated structure without compromising the shielding effectiveness of either component.
3Reliability
If the fixing piece is folded back to secure the shield portion, then attachment reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The shield member is segmented into distinct functional portions: the shield portion for covering the wiring member and the connection portion shield cover with the fixing piece. The fixing piece is further segmented as a separate bent extension that can be independently formed and attached, improving reliability while allowing for simplified manufacturing through stamping or bending operations.
Solution Approach 2:
The fixing piece is pre-formed with a bent configuration during the shield member manufacturing process, allowing it to be immediately used for securing the shield portion to the wiring member. This preliminary formation of the fixing piece structure eliminates the need for additional complex assembly steps while ensuring reliable attachment.
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
This solution effectively shields both the wiring and connection portions with the smallest number of components, preventing damage to the shielding portion and ensuring secure attachment, while also suppressing cap detachment and reducing vibration transmission between electrical devices.
Implementation Method 1
a fixing piece that sandwiches and fixes a first-end edge portion of the wiring electromagnetic shield portion by extending from the cover main body portion and being bent so as to fold back
Implementation Method 2
a wiring electromagnetic shield portion that shields a wiring member; and a connection portion electromagnetic shield cover that is formed by a metal plate member and electromagnetically shields a connection portion
Data Source
AI summary
An electromagnetic shield member is for shielding a wiring member (e.g., an electrical wire) and a connection portion at an end portion of the wiring member (e.g., a first connection portion), and the electromagnetic shield member includes a wiring electromagnetic shield portion that electromagnetically shields the wiring member, and a connection portion electromagnetic shield cover that is formed by a metal plate member and electromagnetically shields the connection portion at the end portion of the wiring member. The connection portion electromagnetic shield cover includes a cover main body portion that covers the connection portion at the end portion of the wiring member, and a fixing piece that sandwiches and fixes a first-end edge portion of the wiring electromagnetic shield portion by extending from the cover main body portion and being bent so as to fold back.