Vehicle Camera Module Hook Coupling for Space-Saving Assembly
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Solution Overview
Problem
Existing camera module designs that use multiple substrates stacked with screws face issues such as reduced component mounting space, increased manufacturing time due to screw coupling, and potential warping of substrates from excessive torque.
Innovation Solution
A camera module design featuring a hook coupling structure between substrates, which simplifies the assembly process, minimizes component mounting space reduction, and prevents substrate warping by eliminating the need for screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to couple substrates, then the substrates can be securely fixed, but the component mounting space is reduced and manufacturing time is increased
Solution Approach 1:
The patent extracts the screw coupling mechanism and replaces it with a hook coupling structure. The support member includes a hook portion that extends from the fence portion and has a coupling hole, which couples with a protrusion on the substrate without requiring screws, thereby eliminating the harmful effect of screw coupling on productivity while maintaining coupling strength
Solution Approach 2:
The patent replaces the mechanical screw coupling system with a hook-based mechanical interlocking system. The hook portion with coupling hole and protrusion creates a secure mechanical connection that eliminates the need for screw tightening operations, thus improving manufacturing efficiency while maintaining structural integrity
2Strength
If screws are used to couple substrates, then the substrates can be securely fixed, but the component mounting space is reduced
Solution Approach 1:
The patent removes the screw heads and fastening mechanisms from the substrate surface, extracting only the essential coupling function through the hook portion and protrusion interface. This eliminates the space occupied by screw coupling components while maintaining the necessary mechanical strength for substrate fixation
Solution Approach 2:
The patent transitions the coupling mechanism from a two-dimensional surface mounting approach to a three-dimensional interlocking approach. The hook portion extends vertically and couples with the protrusion in a depth dimension, allowing secure fixation without occupying horizontal mounting space on the substrate surface
3Strength
If excessive torque is applied during screw tightening, then the substrates can be securely fixed, but warping occurs in the substrate
Solution Approach 1:
The patent replaces the torque-based screw tightening mechanism with a hook-based interlocking mechanism. The hook portion and protrusion create a mechanical interlock that secures the substrate without applying concentrated torque forces, thereby preventing warping while maintaining coupling strength
Solution Approach 2:
The patent changes the coupling parameter from torque-controlled screw fastening to geometric-fit hook interlocking. The coupling strength is determined by the geometry of the hook portion and protrusion rather than applied torque, eliminating the warping effect while maintaining secure fixation
Data Source
AI summary
A camera module comprises: a lens barrel disposed in a front body and comprising a lens; a first substrate disposed under the body; a support member partially disposed on an undersurface of the first substrate; and a second substrate disposed under the first substrate and coupled to the support member, wherein the support member comprises: a fence portion disposed between the first substrate and the second substrate; and a hook portion which comprises a region extending from the fence portion and having a coupling hole into which a partial side surface of the second substrate is inserted, and an extended portion inclined at a predetermined angle with respect to the region having the coupling hole formed therethrough.