Angle Connector Contact Structure for Stable Press-Fit Impedance Control
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Solution Overview
Problem
Conventional angle-type connectors struggle to simultaneously adjust characteristic impedance and facilitate easy assembly, as the impedance-adjusting features can cause instability during the press-fitting process.
Innovation Solution
The angle-type connector design includes a contact with a press-fitting portion, a contacting portion, a lead portion, and an impedance adjusting portion, where the lead portion has a wider width orthogonal to the intersecting direction, allowing for stable press-fitting and adjustable impedance without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If bulging portions are formed to adjust characteristic impedance, then characteristic impedance can be adjusted, but the contact becomes unstable during press-fitting
Solution Approach 1:
The invention relocates the impedance-adjusting function from the downwardly extending portion (vertical dimension) to the horizontally extending portion (horizontal dimension). By forming bulging portions on the inner peripheral surface of the housing that contact the horizontally extending portion of the contact, the impedance adjustment is achieved in a different spatial dimension, avoiding interference with the press-fitting stability.
2Manufacturing precision
If bulging portions extend rearward to adjust impedance, then characteristic impedance decreases, but assembly becomes more difficult
Solution Approach 1:
The housing's inner peripheral surface is designed with bulging portions that extend in the horizontal direction (along the fitting axis) rather than the vertical direction (downward from the horizontally extending portion). This dimensional reorientation allows impedance adjustment while maintaining easier assembly, as the bulging portions are formed on the housing itself rather than requiring complex contact modifications.
3Ease of manufacture
If the contact structure is simplified for easy assembly, then assembling becomes easier, but characteristic impedance adjustment becomes impossible
Solution Approach 1:
The housing serves as an intermediary element that performs the impedance-adjusting function. By forming bulging portions on the housing's inner peripheral surface, the housing mediates between the contact and the impedance requirement, allowing the contact itself to remain simple for easy assembly while the housing provides the necessary impedance adjustment through its geometric features.
Data Source
AI summary
An angle-type connector includes a contact made of a metal sheet punched out in an L shape and a housing retaining the contact, the contact having a press-fitting portion linearly extending along a fitting axis and press-fitted into the housing, a contacting portion linearly extending along the fitting axis from a tip end of the press-fitting portion, and a lead portion extending from a base end of the press-fitting portion along an intersecting direction intersecting the fitting axis, a width of the lead portion in a direction orthogonal to the intersecting direction being wider than a width of the contacting portion and a width of the press-fitting portion in a direction orthogonal to the fitting axis, the lead portion including a press-fitting force receiving surface situated on the fitting axis, the contact including an impedance adjusting portion formed by cutting out in a direction along the fitting axis.