Electrical Connector Assembly for Stable Oblique Card Insertion
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Solution Overview
Problem
Existing electrical connectors fail to maintain stable electrical connections when electronic cards are obliquely inserted due to unequal contact between contact arms of terminals in different rows, leading to incomplete mating and potential vibration issues.
Innovation Solution
The electrical connector assembly features swinging neck portions with protruding contact arms that allow oblique insertion, ensuring stable contact with contact pads on both sides of the mating component, with dimensions allowing for a 0.4 mm difference and 0.2 mm distance from inner side walls to ensure secure mating and vibration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic card is obliquely inserted into the insertion slot, then the insertion operation becomes more flexible and convenient, but the contact status between the contact pads and contact portions becomes uneven, causing incomplete mating and potential connection failure
Solution Approach 1:
The contact arms are designed to be movable rather than fixed, allowing them to swing and adjust their positions dynamically. When the electronic card is obliquely inserted, the contact arms can swing to accommodate the angle change, ensuring that both contact portions maintain stable contact with the contact pads despite the non-vertical insertion angle. This dynamic adjustment mechanism resolves the contradiction by enabling both flexible insertion and reliable electrical connection.
2Ease of manufacture
If the contact arms of terminals in different rows are independently provided, then the structure is simpler and easier to manufacture, but the contact arms do not swing together during oblique insertion, leading to uneven contact status and potential connection failure
Solution Approach 1:
The contact arms of terminals in different rows are connected through a common swing mechanism, merging their movement into a unified action. When the electronic card is inserted obliquely, all contact arms swing together as a coordinated group, ensuring uniform contact status across all terminals. This merging approach maintains manufacturing simplicity while achieving reliable and uniform contact across all terminal rows.
3Area of stationary object
If the distance between contact portions and inner side walls is small, then the insertion slot width can be reduced, but oblique insertion causes the electronic card to abut against terminals on one side without contacting terminals on the other side, affecting electrical connection
Solution Approach 1:
The contact arms are designed with swing capability, allowing them to dynamically adjust their positions during oblique insertion. Even when the insertion slot width is small and the electronic card is inserted at an angle, the contact arms can swing to maintain contact with the contact pads on both sides. This dynamic adjustment ensures complete electrical connection despite the compact slot dimensions and oblique insertion angle.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enables stable electrical connections even with oblique insertion, enhances convenience by allowing non-vertical insertion, and improves anti-vibration performance by maintaining tight contact with contact pads, preventing ill contact and vibration-induced disconnection.
Implementation Method 1
a neck portion extends upward from the fixing portion and is capable of swinging along the lateral direction
Data Source
AI summary
An electrical connector assembly. An electrical connector has an insulating body, which is concavely provided with an insertion slot. The insertion slot has a first dimension along a lateral direction. Along the lateral direction, a distance between each contact portion and the inner side wall of the insertion slot located at a same side of the insertion slot is greater than 0.2 mm. The mating component has a second dimension along the lateral direction. The first dimension is greater than the second dimension, and a difference between the first dimension and the second dimension is greater than or equal to 0.4 mm. Thus, when the mating component is obliquely inserted into the insertion slot, the two contact portion of each terminal may be stably mated with the mating component.