Adjustable Motion Sensor Cam Mechanism
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Solution Overview
Problem
Conventional motion detection sensors require time-consuming and risky adjustments to the position of the printed circuit board relative to the focusing element, which can lead to performance issues and exposure to damage.
Innovation Solution
A motion detection sensor system with a cam mechanism that allows for easy adjustment of the printed circuit board's position relative to the focusing element through a cover with protrusions and grooves, enabling precise alignment without exposing the board to harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking screw retention scheme is used to adjust the printed circuit board position, then the board can be secured in place, but the board is more likely to slip out of position and the adjustment process is time consuming
Solution Approach 1:
The patent transitions from a static screw-based retention system to a dynamic cam mechanism that enables quick positional adjustments. The cam can be rotated to move the printed circuit board to different positions and locked into place, allowing both easy adjustment and secure positioning without time-consuming screw operations.
Solution Approach 2:
The patent replaces the traditional screw-and-locking-mechanism with a cam-based system. The cam mechanism provides both the adjustment function and the locking function in a single component, eliminating the need for separate locking screws and reducing the complexity of the mechanical adjustment system.
2Manufacturing precision
If the printed circuit board assembly is removed from its enclosure for adjustment, then positioning can be optimized, but the board is exposed to harm such as dropping, electrostatic discharge damage, and shorting
Solution Approach 1:
The patent separates the adjustment function from the housing structure by introducing a dedicated cam mechanism. This allows the printed circuit board to be adjusted independently within the sealed enclosure, maintaining protection while enabling precise positioning of the detector relative to the focusing element.
Solution Approach 2:
The cam acts as an intermediary mechanism between the operator and the printed circuit board. It provides a controlled method for adjusting the board's position without requiring removal from the enclosure, thus mediating between the need for precision alignment and the need for component protection.
3Ease of operation
If conventional adjustment methods are used, then the printed circuit board can be repositioned, but the process is time consuming and may compromise motion sensor performance
Solution Approach 1:
The cam mechanism provides dynamic adjustment capability, allowing the printed circuit board to be quickly repositioned to optimal locations. This improves ease of operation while maintaining sensor performance through precise, controlled positioning that can be secured reliably.
Data Source
AI summary
This invention relates generally to the field of motion detection sensors, and in particular to a system and method for adjusting the position of a printed circuit board relative to a focusing element. The invention includes a housing having a front opening and an interior cavity. A focusing element is located within the front opening and the detector is coupled to a printed circuit board located within the interior cavity. A cover is coupled to the printed circuit board and disposed within the interior cavity. A cam is operatively coupled with the cover and the printed circuit board for adjusting the position of the printed circuit board such that the detector's position is adjusted relative to the focusing element.