Light Source Fixing Assembly for Stable Flexible-Board Contact
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Solution Overview
Problem
The challenge of stabilizing the contact between a circuit board and a flexible circuit board in projection devices to ensure effective circuit conduction, particularly in small spaces or special designs, is not adequately addressed by existing technologies.
Innovation Solution
A light source fixing assembly that includes an optical engine housing, a circuit board, a light emitting element, a flexible circuit board, a fixing element, and an abutting element, where the abutting element ensures stable electrical connection by abutting against the flexible circuit board's bonding region, and the fixing element secures the circuit boards to the housing, with separate functions to prevent interference during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board and flexible circuit board are connected without additional fixing structures, then the assembly process is simple, but the contact between the two circuit boards is unstable and conduction is poor
Solution Approach 1:
The fixing element integrates both mechanical fixing function and electrical conduction function into a single component. The fixing element includes a fixing portion that penetrates through fixing holes in both circuit boards and a conduction portion that contacts the flexible circuit board, merging structural support and electrical connection into one unified component rather than using separate fixing structures and connection elements.
Solution Approach 2:
The fixing element serves multiple functions simultaneously: it mechanically fixes the circuit board and flexible circuit board together, provides electrical conduction between the two boards, and maintains stable contact during assembly. This multi-functional design eliminates the need for separate fixing structures and connection elements, resolving the contradiction between reliability and complexity.
2Reliability
If the abutting element is positioned to ensure stable electrical connection, then circuit conduction is improved, but the fixing element may interfere with the assembly process
Solution Approach 1:
The fixing element is divided into distinct functional segments: a fixing portion for mechanical attachment through fixing holes and a conduction portion for electrical connection. This segmentation allows each portion to perform its specific function optimally without interfering with the other, enabling stable electrical connection while maintaining ease of assembly through separate functional zones.
Solution Approach 2:
The fixing element acts as an intermediary component that mediates between the circuit board and flexible circuit board. It provides a stable intermediate structure that ensures both mechanical fixing and electrical conduction, preventing direct interference between the abutting element and the assembly process while maintaining reliable electrical connection through its conduction portion.
3Ease of manufacture
If separate fixing and abutting elements are used, then the assembly process is simplified, but the cost increases due to additional components
Solution Approach 1:
The fixing element combines the functions of multiple separate components (fixing structure and abutting element) into a single integrated component. This merging reduces the total number of parts that need to be manufactured, stored, and assembled, thereby simplifying the assembly process while reducing component quantity and associated costs.
Solution Approach 2:
The fixing element is designed as a multi-functional universal component that performs both mechanical fixing and electrical conduction. This universality eliminates the need for separate specialized components, reducing the quantity of substances (materials and parts) required while maintaining ease of manufacture through a single versatile element rather than multiple specialized ones.
Data Source
AI summary
A light source fixing assembly includes an optical engine housing, a circuit board, a light emitting element, a flexible circuit board, a fixing element and an abutting element. The circuit board has a bearing surface, a first fixing region and a first conductive bonding region. The first bonding region and the light emitting element are on the bearing surface. The flexible circuit board is between the optical engine housing and the circuit board. The flexible circuit board has a first surface, a second surface opposite to the first surface, and a second fixing region. The second surface has a second bonding region. The fixing element fixes the circuit board and the flexible circuit board onto the optical engine housing. The abutting element abuts against the flexible circuit board and corresponds to the second bonding region, so that the first bonding region is electrically connected to the second bonding region.