Connection Switching Device Parallel Inspection Isolation
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Solution Overview
Problem
Conventional connection switching devices require directional changes when connecting an inspecting circuit to either the antenna or transmission/reception circuit, lack simultaneous connection capability, and suffer from insufficient isolation leading to noise and signal leakage, which complicates noise influence inspection and antenna impedance adjustment.
Innovation Solution
A connection switching device with a receptacle connector featuring first and second contacts and a normally closed terminal, where the plug includes plug pins and an insulating projection to switch connections between the contacts and the terminal, allowing parallel connection of the inspecting circuit to both the antenna and transmission/reception circuit, and utilizing a ground terminal for shielding to enhance isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional connection switching device is used to connect an inspecting circuit to the antenna or transmission/reception circuit, then the connection switching function is achieved, but directional changes are required and simultaneous connection capability is lacking
Solution Approach 1:
The device is segmented into distinct functional components: a receptacle connector with first and second contacts, a normally closed terminal, and a plug with corresponding plug pins. This segmentation allows independent connection paths to be established simultaneously without requiring directional changes, as each contact and plug pin pair can be engaged independently
Solution Approach 2:
The receptacle connector is designed with multi-functionality to support both normal operation (connecting antenna to transmission/reception circuit) and inspection mode (connecting inspecting circuit to both antenna and transmission/reception circuit simultaneously). The first and second contacts serve dual purposes: maintaining normal connectivity while enabling parallel inspection connections through the normally closed terminal
2Reliability
If conventional connection switching devices are used, then connection switching is achieved, but isolation between signal lines is insufficient leading to noise and signal leakage
Solution Approach 1:
The normally closed terminal acts as an intermediary component that facilitates controlled isolation between signal lines. During normal operation, it maintains electrical continuity between the antenna and transmission/reception circuit. During inspection, it enables the inspecting circuit to connect to both signal paths simultaneously while the insulating housing provides physical and electrical isolation, preventing noise and signal leakage between channels
3Object-affected harmful factors
If additional shielding components are added to improve isolation, then noise protection is enhanced, but device complexity and manufacturing costs increase
Solution Approach 1:
The insulating housing serves as a flexible shielding structure that provides noise protection without adding complex metallic shielding components. The housing is designed to physically isolate the normally closed terminal and its associated signal paths, creating effective electromagnetic isolation through its insulating properties while maintaining a compact, simple overall structure
Solution Approach 2:
The normally closed terminal and insulating housing work together in a self-service manner to provide both connection switching and noise protection functions. The terminal enables the switching capability while the housing automatically provides the necessary shielding and isolation, eliminating the need for separate, additional shielding components
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
Enables efficient switching between signal transmission routes, provides high isolation between signal lines, facilitates inspection of transmission/reception circuit operation considering noise influence, reduces manufacturing costs, and allows for compact design without additional shielding, ensuring reliable signal transmission and reception.
Implementation Method 1
an insulating projection to insulate between the first elastic contact piece and the normally closed terminal and between the second elastic contact piece and the normally closed terminal
Implementation Method 2
utilizing a ground terminal for shielding to enhance isolation
Implementation Method 3
a first elastic contact piece and a second elastic contact piece, and a normally closed terminal that are attached to an insulating housing in a state of being insulated from one another
Data Source
AI summary
A connection switching device is provided which connects a plug, having a plug pin connected to an inspecting circuit, to a receptacle connector connecting an antenna and a transmission/reception circuit, and switches a connection to a parallel connection where the inspection circuit is connected to the antenna and to the transmission/reception circuit. The receptacle connector includes a first contact, a second contact, and a normally closed terminal that is brought into elastic contact with the first contact and the second contact. The plug includes a first plug pin being brought into contact with the first contact, a second plug pin being brought into contact with the second contact, and an insulating projection being inserted between at least one of the first and second contacts and the normally closed terminal to insulate between the at least one of the first and second contacts and the normally closed terminal.