3D MID Sensor Support Element for Watch Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of sensor modules in wristwatches is complex and expensive due to the need for multiple parts and interfaces, and existing technologies like in-mould labelling and three-dimensional injection moulding with laser structuring are not suitable for the smaller dimensions and positioning constraints of horology.
Innovation Solution
A 3D/MID support element with integrated electrical connection paths and flexible connection interfaces formed by bent wire springs or flexible finger-pieces, which integrates mechanical and electronic functionalities, reducing the need for rigid or flexible PCBs and Zebra connectors, and allowing for more flexible assembly and positioning within the watch case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sensor modules with multiple parts and interfaces are used, then reliable electrical connection and robust attachment are achieved, but assembly complexity and cost increase
Solution Approach 1:
The patent combines multiple separate components (sensor housing, support element, electrical connectors, and interconnection paths) into a single integrated 3D/MID support element. This merging eliminates the need for separate PCBs, Zebra connectors, and intermediate parts, thereby reducing assembly complexity while maintaining reliable electrical connections through integrated conductive paths.
Solution Approach 2:
The 3D/MID support element performs multiple functions simultaneously: it provides mechanical support for the sensor, establishes rigid connections to the case, creates flexible interconnections via wire springs, and conducts electrical signals through integrated paths. This multi-functionality reduces the number of separate components needed, simplifying the overall assembly.
2Reliability
If rigid PCBs and Zebra connectors are used for sensor connection, then stable electrical connection is achieved, but flexibility in positioning and assembly is reduced
Solution Approach 1:
The patent introduces dynamic, flexible connection elements (wire springs) that can bend and adapt to different positioning requirements. These flexible connectors allow the sensor module to be positioned at various locations within the case while maintaining stable electrical connections, unlike rigid PCBs that require precise fixed positioning.
Solution Approach 2:
The integrated electrical connection paths are formed as thin, flexible conductive structures within the 3D/MID support element. These flexible conductive paths can accommodate movement and positioning variations, enabling the sensor to be mounted at different locations while maintaining reliable electrical connectivity.
3Reliability
If multiple separate components are used for sensor assembly, then functional requirements are met, but the number of parts and interfaces increases
Solution Approach 1:
The patent merges the sensor housing, support structure, electrical connectors, and interconnection paths into a single 3D/MID support element. This consolidation reduces the number of parts from multiple separate components to one integrated unit, while all necessary functions are maintained through the integrated design.
Solution Approach 2:
While the overall structure is integrated, the 3D/MID support element incorporates segmented functional zones: rigid connection interfaces for secure attachment, flexible wire spring sections for adaptable connections, and integrated conductive paths for electrical signals. This segmentation of functions within a unified structure optimizes both functionality and part reduction.
Data Source
AI summary
A three dimensional support element for a timepiece sensor, made in 3D-MID and including integrated electrical connection paths, a flexible connection interface formed of bent wire springs or flexible finger-pieces, and a rigid connection interface.