Electrical Connector Spring Beam Interference Prevention
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Solution Overview
Problem
Existing electrical connectors with spring beams often interfere with the shell of an electrical device and lack sufficient mating force due to insufficient design.
Innovation Solution
The electrical connector features a second metal shell with a supporting beam and cantilever portion that flanks the spring beam, preventing contact with the device shell and enhancing mating force through the use of an insulative member attached to the cantilever portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If spring beams extend forwardly to provide mating force, then mating force is improved, but the spring beam may touch the device shell and cause interference signal
Solution Approach 1:
An insulative member is introduced as an intermediary between the spring beam and the device shell. This insulative member is attached to the cantilever portion and positioned to prevent the spring beam from touching the device shell, thereby eliminating the interference signal while preserving the spring beam's mating force function
Solution Approach 2:
The metal shell is divided into a first metal shell and a second metal shell. The second metal shell includes a supporting beam and a cantilever portion that are offset from each other, allowing the insulative member to be positioned strategically to prevent contact between the spring beam and device shell
2Reliability
If spring beams are designed to provide sufficient mating force, then connection reliability is improved, but the spring beam may interfere with the device shell
Solution Approach 1:
The insulative member acts as a mediator that prevents direct contact between the spring beam and the device shell, eliminating the source of interference signals while allowing the spring beam to maintain its reliable mating force function
Solution Approach 2:
The solution moves the potential interference problem from the horizontal dimension (where the spring beam extends forward) to the vertical dimension by using the insulative member to provide electrical isolation, allowing the spring beam to extend fully for reliable connection
3Strength
If the spring beam extends forwardly to enhance mating force, then connection strength is improved, but it causes interference with the device shell
Solution Approach 1:
The insulative member is positioned between the spring beam and the device shell to prevent electrical contact and interference signals, while allowing the spring beam to extend forwardly and maintain its connection strength function
Data Source
AI summary
An electrical connector (100) includes an insulative housing (10), a plurality of contacts (20) mounted on the insulative housing, a first metal shell (30), a second metal shell (40), and an insulative member (44). The first metal shell includes a plurality of side walls (31) and a receiving room (32) formed by the side walls. One of the side walls includes a spring beam (310) extending forwardly. The second metal shell (40) is disposed at an outer side of the first metal shell. The second metal shell includes a body portion (41), a supporting beam (42) extending forwardly from the body portion and flanking the spring beam, and a cantilever portion (43) extending from the body portion and offsetting from the supporting beam. The insulative member is attached on the cantilever portion and spaced apart from the spring beam.