Asymmetrical RF Switch Connector for Reliable CCD Inspection
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Solution Overview
Problem
Existing radio frequency switch connectors are difficult to measure for quality assurance due to their symmetrical design, which makes it uncertain which solder leg will touch a printed circuit board, complicating CCD detection and potentially leading to defective connectors being misidentified.
Innovation Solution
The radio frequency switch connector is designed with an asymmetrical outer case, where the base is heavier on one side than the other, ensuring the connector consistently inclines towards the heavier side, simplifying CCD measurement and ensuring accurate alignment with a circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the outer case is designed with symmetrical solder leg parts, then the manufacturing and assembly are simplified, but the CCD detection becomes complex and unreliable because it is uncertain which solder leg will touch the PCB
Solution Approach 1:
The outer case is designed with an asymmetrical base where one side extends higher than the other side. This asymmetry ensures that only one specific solder leg part touches the PCB during assembly, making the connector's orientation predictable and reliable for CCD optical measurement. The heavier side of the asymmetrical base consistently contacts the PCB, eliminating the uncertainty present in symmetrical designs.
2Manufacturing precision
If the outer case solder leg parts are designed to be higher than the terminal solder parts, then the terminals are properly soldered to the PCB, but the asymmetrical contact point complicates the CCD detection process
Solution Approach 1:
The base of the outer case is designed with asymmetrical height on either side, creating a predictable tilt that ensures consistent single-point contact with the PCB. This asymmetrical design maintains proper soldering height differential while making the connector's orientation deterministic, enabling reliable CCD detection.
Solution Approach 2:
The asymmetrical base design pre-determines the connector's orientation before assembly occurs. By built-in weight distribution and height differential, the connector automatically assumes the correct tilted position during assembly, eliminating the need for post-assembly orientation adjustment or complex detection procedures.
3Difficulty of detecting and measuring
If the connector is designed to consistently incline towards one side, then the CCD measurement is simplified and alignment with PCB is ensured, but the outer case structure becomes asymmetrical
Solution Approach 1:
The outer case incorporates an asymmetrical base structure where one side extends higher than the other, creating a deliberate tilt. This asymmetrical shape is intentionally designed to produce consistent single-sided contact with the PCB, simplifying CCD optical measurement and ensuring reliable alignment during assembly.
Data Source
AI summary
A radio frequency switch connector includes: a metal case; an insulator defining an inserting hole and received in the metal case; an elastic terminal retained to the insulator and having a first soldering portion; and a fixed terminal retained in the insulator and having a second soldering portion, wherein the first soldering portion and the second soldering portion are aligned with each other in a first direction so as to define an imaginary center line in the first direction, the base of the outer case is asymmetrical at two sides of the imaginary center line so as to shift a weight of the radio frequency switch connector.