HDMI Connector Reinforcement for Solder Joint Durability
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Solution Overview
Problem
Existing electronic apparatuses, such as digital cameras, face durability issues with solder joints due to excessive load applied when a plug is inserted or removed, leading to connector movement and potential disconnection.
Innovation Solution
An electronic apparatus design featuring a circuit board with a connector and a reinforcing member that allows movement in specific directions, with the reinforcing member fixed to the chassis, ensuring a smaller clearance between the connector and the reinforcing member than between the reinforcing member and the circuit board, thereby reducing stress on the solder joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the connector is fixed rigidly to the circuit board, then the connector position is stable, but the solder joint durability deteriorates due to excessive load from plug prying forces
Solution Approach 1:
The patent applies the dynamics principle by allowing the connector to move elastically in the vertical direction relative to the circuit board through a resilient member, transforming the rigid fixed connection into a dynamic flexible connection that can absorb prying forces without damaging the solder joint
Solution Approach 2:
The patent implements beforehand cushioning by introducing a resilient member between the connector and circuit board that预先 provides elastic deformation capacity to absorb the prying force from plug insertion, preventing excessive load from reaching the solder joint
2Reliability
If the connector is allowed to move freely, then the solder joint durability is improved, but the connector position stability deteriorates
Solution Approach 1:
The resilient member creates a dynamic system where the connector can move vertically to absorb shocks but is restrained by the elastic force, achieving a balance between movement capability for durability and position stability for functionality
Solution Approach 2:
The patent changes the mechanical parameter of the connector-circuit board connection from rigid (zero compliance) to elastic (controlled compliance), allowing specific movement in the vertical direction while maintaining positional stability through the elastic restoring force of the resilient member
3Stability of the object's composition
If a reinforcing member is added to restrict connector movement, then the connector stability is improved, but the device complexity increases
Solution Approach 1:
The reinforcing member is merged with the chassis structure, integrating the reinforcement function into the existing housing rather than adding a separate independent component, thereby reducing overall device complexity while maintaining connector stability
Data Source
AI summary
An image capturing apparatus includes an HDMI flexible circuit having a mounting surface, an HDMI connector mounted on the mounting surface of the HDMI flexible circuit, a plug being capable of being inserted therein and removed therefrom, a main base having a mounting portion substantially parallel to the mounting surface, and a reinforcing member that includes part covering the HDMI connector from an opposite side to the mounting portion in a direction orthogonal to the mounting surface and is fixed to the main base. The HDMI connector and the HDMI flexible circuit can move in the direction orthogonal to the mounting surface between the main base and the reinforcing member. In the direction orthogonal to the mounting surface, a minimum clearance between the reinforcing member and the HDMI connector is smaller than a minimum clearance between the reinforcing member and the HDMI flexible circuit.