Fan Connector Segmented Chip Circuit Board Insertion
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Solution Overview
Problem
Conventional fan connectors face challenges in manually installing chips due to their small size, leading to poor contact and reduced reliability, especially during vibration tests.
Innovation Solution
A fan connector design with a connector body featuring separate slots for chip and wiring terminals, allowing a chip circuit board with soldered chips to be easily inserted, ensuring stable connections between chip terminals and conductive pads, thereby improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual installation of chip into fan connector is attempted, then installation process can be performed, but installation difficulty increases and contact reliability deteriorates
Solution Approach 1:
The connector is divided into separate components: a fan connector body with wiring terminals and a chip connector with chip terminals. The chip is first mounted on a circuit board, then the entire board is inserted into the chip connector. This segmentation allows the chip to be installed on a larger, more manageable circuit board rather than directly into the small fan connector, improving both installation ease and contact reliability.
Solution Approach 2:
A circuit board serves as an intermediary component between the chip and the fan connector. The chip is soldered to the circuit board, which then connects to the chip connector terminals. This intermediary structure provides a stable mounting platform for the chip and ensures reliable electrical connection to the fan connector, eliminating the difficulty of direct manual installation.
2Ease of manufacture
If chip is directly connected to circuit wiring in fan connector, then connection can be established, but contact stability deteriorates due to loosening
Solution Approach 1:
The connection system is segmented into distinct components: wiring terminals in the fan connector body, chip terminals in the chip connector, and conductive pads on the circuit board. Each component has a specific function and interface, ensuring stable connections through proper alignment and contact between these segmented parts rather than direct wiring.
Solution Approach 2:
The chip is preliminarily mounted and soldered onto the circuit board before the board is inserted into the chip connector. This preliminary action ensures the chip is securely fixed to the board, preventing loosening and maintaining stable contact between the chip terminals and conductive pads during operation and vibration tests.
3Reliability
If resilient contacting between chip pins and circuit wiring is used, then electrical connection is achieved, but reliability deteriorates during vibration tests due to resonance
Solution Approach 1:
The resilient contact structure is segmented and distributed: multiple chip terminals with resilient contact portions are arranged in the chip connector, each providing independent resilient contact with corresponding conductive pads. This segmentation distributes the mechanical stress and resonance effects across multiple contact points rather than concentrating them, improving reliability during vibration tests.
Solution Approach 2:
The chip terminals are designed with localized resilient contact portions that provide targeted elastic contact force at each contact point. This local quality ensures stable electrical connection while accommodating vibration and thermal expansion, as each contact point can independently maintain pressure against the conductive pads despite external vibrations.
Data Source
AI summary
A fan connector comprises a connector body, a plurality of chip terminals, a plurality of wiring terminals, and a chip circuit board. The connector body comprises an electrical connection slot, a chip slot, and a wiring slot. The plurality of chip terminals and the plurality of wiring terminals are disposed on a sidewall of the electrical connection slot. The plurality of chip terminals corresponds to the plurality of wiring terminals, respectively. The chip circuit board comprises a chip, a circuit board, and a plurality of conductive pads. The chip circuit board is inserted into the chip slot. The plurality of conductive pads is in contact with the corresponding chip terminals. One end of the connector body is connected to a fan, in which a wire passes through the wiring slot and connects to the plurality of wiring terminals. An external plug is possible to insert into the electrical connection slot.