Cable Contact Structure for Gap-Free Outer Conductor Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing contacts experience variable anti-noise performance when crimped onto outer conductors due to potential gaps formed during the crimping process, which degrades electromagnetic shielding performance.
Innovation Solution
A contact design featuring a crimp portion and a receiving portion with pressed portions that are pressed against the outer conductor, ensuring reliable contact and preventing performance degradation by eliminating gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a crimp portion is crimped on the outer conductor, then the contact is electrically connected with the outer conductor, but gaps are formed forward of the crimp portion which degrade electromagnetic shielding performance
Solution Approach 1:
The contact is divided into two functional portions: a crimp portion for electrical connection and a receiving portion for electromagnetic shielding. The crimp portion surrounds the outer conductor to ensure electrical connection, while the receiving portion located forward of the crimp portion provides continuous shielding without gaps.
Solution Approach 2:
The receiving portion extends in the front-rear direction beyond the crimp portion, adding a dimensional element that continues the shielding function into the region where gaps would normally form. This spatial extension eliminates the shielding discontinuity caused by the crimp structure.
2Object-affected harmful factors
If the contact structure is extended forward to improve shielding, then electromagnetic shielding performance is enhanced, but the device complexity increases
Solution Approach 1:
The receiving portion and crimp portion are merged into a single integrated contact structure. The receiving portion is formed as an extension of the crimp portion, allowing both electrical connection and electromagnetic shielding functions to be achieved through one unified component rather than separate parts.
Solution Approach 2:
The contact structure serves multiple functions: the crimp portion provides electrical connection while the receiving portion provides electromagnetic shielding. Both functions are achieved through a single contact component, eliminating the need for separate shielding elements and reducing overall device complexity.
Data Source
AI summary
A contact is connected to a front end in the longitudinal direction (X direction) of a cable provided with an outer conductor at the outer periphery thereof. The contact has a pressure bonding part and an acceptance part. The pressure bonding part is pressure-bonded to the outer conductor so as to surround the outer conductor in a connection state in which the contact is connected to the cable. The acceptance part is located in front of the pressure bonding part, and partially accepts the outer conductor in the connection state. The acceptance part has at least two parts to be pressed. Each of the parts to be pressed is located outside the outer conductor on an orthogonal plane (Y-Z plane) and pressed against the outer conductor in a connection state.