Shield Device With Receiving Cage For Cable Testing
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Solution Overview
Problem
Conventional shield cages allow ambient electromagnetic waves to interfere with the testing of electronic products connected via cables, leading to testing failures.
Innovation Solution
A shield device with a receiving cage that includes a base with electromagnetic wave-absorbing materials and a receiving cage with a trapeziform recessed portion and protrusion design to seal the cable, preventing electromagnetic interference during testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through hole is provided in the sidewall of the shield cage for cable connection, then the electronic product can be connected to external devices, but ambient electromagnetic waves can enter the shield cage and interfere with testing
Solution Approach 1:
The receiving cage is nested within the shield cage structure, with the cable passing through the receiving cage which is positioned within the opening of the shield cage. This nested arrangement allows the cable to be connected while the receiving cage acts as an inner shield to block electromagnetic waves from entering through the opening.
Solution Approach 2:
The receiving cage serves as an intermediary structure between the external environment and the shielded interior. It mediates the cable connection function while simultaneously providing electromagnetic shielding, thus allowing cable access without compromising the shield integrity.
2Object-affected harmful factors
If electromagnetic wave-absorbing materials are added to the base of the shield cage, then internal reflections of electromagnetic waves are reduced, but the device complexity increases
Solution Approach 1:
Electromagnetic wave-absorbing materials are applied locally to specific surfaces within the shield cage (such as the base and/or sidewalls) rather than requiring complete shielding of all surfaces. This localized application reduces internal reflections effectively while minimizing the added complexity and cost compared to full shielding.
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
Effectively blocks ambient electromagnetic waves, ensuring accurate testing and quality assessment of electronic products by minimizing internal reflections and external interference.
Implementation Method 1
the base is provided with electromagnetic wave-absorbing materials
Implementation Method 2
A shield device with a receiving cage that includes a base with electromagnetic wave-absorbing materials and a receiving cage with a trapeziform recessed portion and protrusion design to seal the cable, preventing electromagnetic interference during testing
Data Source
AI summary
A shield device for blocking ambient electromagnetic waves from interfering with testing of an electronic product (50) connected with a cable (60), includes a shield cage (10) and a receiving cage (40) for receiving the cable. The shield cage includes a base (30) defining a receiving space (38) for receiving the electronic product, and an opening in communication with the receiving space. The receiving cage received in the opening, includes an upper cover (42) and a lower cover (44). The upper cover defines a recessed portion (422), and the lower cover includes a protrusion (442) received in the recessed portion. When the upper cover is mounted on the lower cover, at least one transition portion (46) is formed in the receiving cage.