Vehicle Camera Circuit Board Layout for Harness Load Isolation
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Solution Overview
Problem
Existing vehicle camera systems face challenges in maintaining imaging stability and compact dimensions while minimizing the impact of motion and weight loads from harnesses, leading to increased material and assembly costs and larger dimensions.
Innovation Solution
A vehicle camera circuit board design with a first main side featuring an imaging sensor and a contact area facing a lens assembly, and a second main side with an attachment area that overlaps the contact area, allowing the connector part to be positioned mechanically favorably, providing a rigid support and reducing mechanical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image sensor and external connector are mounted to two separate circuit boards, then the mechanical stability and imaging precision are improved, but the device complexity and material costs increase
Solution Approach 1:
The patent merges the image sensor and external connector onto a single circuit board, eliminating the need for separate circuit boards while maintaining mechanical stability. This integration reduces device complexity and material costs while preserving imaging precision through optimized mechanical design and strain relief mechanisms.
2Ease of operation
If the connector is positioned far from the supporting interface, then the electrical connection is improved, but the mechanical stability deteriorates due to motion and weight load from the harness
Solution Approach 1:
The patent introduces strain relief mechanisms as intermediary elements between the connector and the supporting interface. These mechanisms absorb motion and weight loads from the harness, protecting the mechanical stability of the circuit board assembly while maintaining proper electrical connections.
3Stability of the object's composition
If a separate circuit board is used for the connector, then the mechanical load from the harness is isolated, but the dimensions and assembly costs increase
Solution Approach 1:
The patent combines the connector circuit traces with the main imaging circuit board, eliminating the need for a separate connector circuit board. This integration reduces the overall dimensions and assembly costs while maintaining mechanical stability through optimized trace routing and structural support design.
4Strength
If the attachment area is positioned to overlap the contact area, then the mechanical support is improved, but the available area for other components is reduced
Solution Approach 1:
The patent applies local quality by positioning the attachment area to overlap the contact area only in specific regions where mechanical support is most needed. This selective overlapping provides enhanced structural strength at critical locations while preserving sufficient area in other regions for mounting imaging components and routing traces.
Data Source
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AI summary
The present disclosure relates to a vehicle camera circuit board (110) comprising a first main side (111) and a second main side (112). The first main side (111) comprises an imaging sensor (113) and a contact area (114) that is adapted to face a contact part (115) of a lens assembly (101), and the second main side (112) comprises an attachment area (116a, 116b, 116c) adapted to receive a first connector part (117). The attachment area (116a, 116b, 116c) is partly overlapping the contact area (114) when seen against a main side (111, 112).