Microphone Connector Spacer Alignment
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Solution Overview
Problem
Conventional microphone connectors experience decentering issues between the pin insert and the connector case, leading to assembly difficulties, loose connections, and contact noise due to the gap between the inner and outer diameters, which affects the attachment and detachment of the microphone cable.
Innovation Solution
A partially arc-shaped spacer is interposed between the inner peripheral surface of the connector case and the outer peripheral surface of the pin insert to prevent decentering, ensuring a stable connection and smooth attachment/detachment by filling the gap and preventing rotation and inclination of the pin insert.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer diameter of the pin insert base is made smaller than the inner diameter of the connector case to allow screw fixation, then the pin insert can be fixed to the connector case, but a gap is produced between the inner peripheral surface of the connector case and the outer periphery of the base, causing decentering
Solution Approach 1:
A stopper member is introduced as an intermediary component between the pin insert base and the connector case. The stopper member fills the gap created by the size difference, preventing decentering while allowing the outer diameter of the base to remain smaller than the inner diameter of the case for screw fixation. This mediator resolves the contradiction by enabling both secure attachment and precise alignment.
2Manufacturing precision
If the gap between the connector case and pin insert base is reduced to prevent decentering, then alignment precision improves, but the pin insert cannot be inserted into the connector case or assembly becomes difficult
Solution Approach 1:
The connection structure is segmented into three distinct components: the connector case, the pin insert base, and the stopper member. This segmentation allows the base outer diameter to be smaller than the case inner diameter for easy insertion, while the stopper member provides the necessary alignment precision by filling the gap. The segmentation resolves the contradiction by separating the insertion function from the alignment function.
3Strength
If a screw is used to fix the pin insert to the connector case, then the pin insert can be securely attached, but decentering occurs due to the gap between the components
Solution Approach 1:
The stopper member serves as a mediator that maintains precise alignment between the pin insert base and connector case during screw fixation. By filling the gap radially between the outer periphery of the base and the inner peripheral surface of the case, the stopper member ensures that the screw provides fixation strength without causing decentering.
4Ease of manufacture
If the pin insert is allowed to decenter slightly to facilitate insertion, then assembly ease improves, but loose connection and contact noise occur
Solution Approach 1:
The stopper member acts as a mediator that eliminates the harmful effects of decentering while maintaining easy insertion. By radially filling the gap between the pin insert base and connector case, it prevents the loose connection and contact noise that would result from decentering, while still allowing the base outer diameter to be smaller than the case inner diameter for straightforward assembly.
Data Source
AI summary
To obtain a microphone connector and microphone, wherein in the state where a pin insert and a connector case are connected to each other with a screw, the mutual decentering between the pin insert and the connector case can be suppressed to an extremely small amount, and the attaching and detaching of the connector can be carried out smoothly, and there is no looseness in the state where the connectors are connected to each other. The microphone connector includes: a cylindrical connector case which is connected to a microphone and into which a microphone cable side connector is inserted; a pin insert fixed in the connector case; a setscrew that is screwed in the radial direction of the pin insert to connect the connector case and the pin insert to each other; and a spacer being interposed between the inner peripheral surface of the connector case and the outer peripheral surface of the pin insert, and preventing the connector case and the pin insert from decentering due to the connection of the connector case and the pin insert with a setscrew.