Coaxial Connector Locking Beam Structure for Impedance Stability
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Solution Overview
Problem
The existing connector designs, such as those described in Japanese Patent Laid-open Publication No. 2018-512707, face a challenge in maintaining impedance due to the cantilevered support of the lance, which can lead to gaps and decreased impedance.
Innovation Solution
The proposed connector incorporates a dielectric with a cavity and a locking hole, featuring an inner conductor with a locking portion shaped as a double-supported beam. This configuration ensures the inner conductor is securely locked, reducing the likelihood of impedance decrease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cantilevered lance structure is used to hold the inner conductor, then the structure is simple and easy to manufacture, but gaps form around the lance causing impedance decrease
Solution Approach 1:
Instead of supporting the lance from one end (cantilevered), the invention inverts the support approach by providing support at both ends of the locking portion, transforming it into a double-supported beam structure. This inversion resolves the contradiction by eliminating gaps while maintaining manufacturing simplicity.
Solution Approach 2:
The invention changes the structural parameter of the locking portion from a cantilevered single-supported configuration to a double-supported beam configuration. This parameter change in the support structure eliminates gaps around the lance, preventing impedance decrease while keeping the overall structure simple.
2Device complexity
If the locking portion is made as a simple cantilevered lance, then the device complexity is reduced, but gaps form around the lance leading to impedance decrease
Solution Approach 1:
The invention inverts the conventional cantilevered lance design by implementing a double-supported beam structure for the locking portion. This inversion maintains relatively simple device complexity while effectively preventing gaps and impedance degradation.
Solution Approach 2:
By changing the structural parameter of the locking portion from cantilevered to double-supported, the invention achieves better reliability without significantly increasing device complexity. The modification is localized to the locking portion geometry rather than the overall connector structure.
Data Source
AI summary
Technology of the present invention suppresses a decrease in the impedance of an inner conductor. A connector 10 includes an inner conductor 21, an outer conductor 41 that surrounds the inner conductor 21, and a dielectric 61 arranged between the inner conductor 21 and the outer conductor 41. The dielectric 61 includes a cavity 63 that extends in a predetermined direction and a locking hole 64 formed in an inner peripheral face of the cavity 63. The inner conductor 21 includes an inner conductor body 23 arranged in the cavity 63, and a locking portion 24 that bulges from the inner conductor body 23 and can enter and be locked to the locking hole 64. The locking portion 24 extends along the predetermined direction and is shaped as a double-supported beam whose upper and lower end portions are supported by the inner conductor body 23.