Angled PCB Notch Mechanism for Connector Access
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Solution Overview
Problem
Accessing and disengaging printed circuit boards (PCBs) from recesses in electronic devices is difficult, especially when cables or ribbons are connected, due to limited space and the need for precise alignment, which complicates assembly and maintenance.
Innovation Solution
A device design featuring a first and second cover with notches that allow the PCB to be positioned at an angle, enabling easier access and disengagement, with the PCB having engaging portions that fit into these notches, forming an enclosure and allowing for rotational positioning to facilitate connector accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the PCB is entirely removed from the recess of the bottom cover to access the socket or connector, then accessibility to the connector is improved, but the cable or ribbon length must be increased to maintain electrical connection
Solution Approach 1:
The PCB is designed to be rotatable within the recess, transitioning from a fixed position to a dynamic, adjustable position. The engaging portion allows the PCB to pivot between a first position (flush with cover) and a second position (rotated to expose connector), enabling accessibility without complete removal and maintaining cable length constraints
2Ease of operation
If the PCB is entirely removed from the recess to access the socket or connector, then accessibility to the connector is improved, but the device assembly complexity increases
Solution Approach 1:
The PCB structure is segmented into distinct functional zones: an engaging portion for mechanical attachment, a circuit board area for electronics, and a connector area for interfacing. The engaging portion itself is segmented with a cable relief feature that separates cable management from the mounting function, simplifying assembly by allowing independent positioning of these elements
Solution Approach 2:
The rotatable mounting mechanism provides dynamic accessibility without requiring complete disassembly. The PCB can be rotated to expose the connector for servicing while remaining attached to the device, eliminating the need for complex removal and reinstallation procedures
3Ease of operation
If the PCB is rotated to a raised position to expose the connector, then accessibility to the connector is improved, but the PCB positioning precision must be maintained to ensure proper engagement
Solution Approach 1:
The angled notch geometry automatically guides the engaging portion into proper alignment during rotation. The wedge-shaped notch with specific angle ranges (30-60 degrees) creates self-aligning forces that ensure precise positioning without requiring external alignment tools or complex adjustment mechanisms
Solution Approach 2:
The rotational mechanism transitions the PCB from a fixed flush position to a raised exposed position through controlled movement. The engaging portion moves along the angled surfaces of the notch, with the geometry itself providing positioning precision throughout the rotation range while maintaining engagement
Data Source
AI summary
Devices with PCB engaging portions are disclosed. In one embodiment, a device may include: (1) a first cover comprising a base portion and a plurality of lateral portions, a first one of the lateral portions comprising a first notch; and (2) a printed circuit board (PCB) comprising a first engaging portion engageable to the first notch, the PCB positioned at an angle with respect to the base portion of the first cover when the first engaging portion is engaged to the first notch.