Antenna Coil Device Connector Alignment Mechanism
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Solution Overview
Problem
The existing antenna coil devices in electronic key systems suffer from reduced operation accuracy due to defective electrical continuity between the connector and the antenna body, often caused by the distortion of a rubber-made elastic plug, leading to misalignment and instability in the connection.
Innovation Solution
The antenna coil device features a connector unit and a base unit as separate members with specific concave and convex fitting portions, ensuring stable positioning and alignment of the antenna body with respect to the connector unit, thereby maintaining consistent electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rubber-made elastic plug is used to combine the base unit and connector unit, then the components can be assembled together, but the plug distorts during engagement causing misalignment between the antenna terminal and connector unit
Solution Approach 1:
The connector unit is divided into multiple components: the plug body, the positioning protrusion, and the connector housing. This segmentation allows the positioning protrusion to be integrated into the plug structure, providing alignment guidance while maintaining the ease of assembly provided by the elastic plug's flexibility.
Solution Approach 2:
The positioning protrusion acts as an intermediary element between the elastic plug and the connector unit. It transfers and guides the insertion motion, ensuring that the antenna terminal aligns correctly with the connector unit during the assembly process, thereby preventing misalignment while preserving the ease of assembly.
2Reliability
If the antenna terminal protrudes through the elastic plug, then electrical connection is achieved, but the terminal becomes displaced relative to the connector unit due to plug distortion
Solution Approach 1:
The positioning protrusion is designed to guide the antenna terminal into the correct position before the elastic plug fully engages with the connector unit. This preliminary positioning action ensures that the terminal is already aligned correctly when electrical contact is made, preventing subsequent displacement and maintaining both electrical continuity and connection stability.
Solution Approach 2:
The invention replaces the purely elastic mechanical connection with a guided mechanical interface. The positioning protrusion provides a deterministic geometric constraint that supersedes the uncertain elastic deformation of the plug, ensuring stable positioning and reliable electrical continuity independent of plug distortion.
3Adaptability or versatility
If separate members are used for base unit and connector unit, then generalization is achieved, but defective electrical continuity may occur due to misalignment
Solution Approach 1:
The positioning protrusion serves multiple functions: it guides the assembly process, positions the antenna terminal accurately, and maintains alignment during connection. This multi-functionality allows separate base units and connector units to be reliably assembled without compromising electrical continuity, thereby achieving both generalization and reliability.
Data Source
AI summary
An antenna coil device including: a connector unit mounted with a connector of an external circuit detachably by being plugged-in; and a base unit provided with an antenna body including a coil, in which the connector unit and the base unit are constituted by separate members and are used by being combined integrally each other, wherein for the connector unit and the base unit, there are formed a connector fitting portion and a base fitting portion which are formed with a concave and a convex in a direction intersecting with respect to the plug-in direction of the connector unit, and by fitting the connector fitting portion and the base fitting portion, the connector unit and the base unit are combined in a state in which the antenna body is positioned with respect to the connector unit.