Camera Module Rear-Body Assembly for Grounding and Waterproofing

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Solution Overview

Problem

Conventional camera modules face issues with increased assembly man-hours and unit prices due to the use of two rear bodies, requiring separate parts for grounding and waterproofing, and the need for multiple screws for coupling.

Innovation Solution

A camera module design utilizing a single rear body with integrated grounding and waterproofing features, achieved through a connection portion with specific hole diameters and stepped surfaces to secure the ground member, allowing assembly with one hole and eliminating the need for separate parts and screws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If two rear bodies are used for grounding and waterproofing, then grounding and waterproofing functions are achieved, but assembly complexity and manufacturing cost increase

Engineering Contradiction:

Improvegrounding and waterproofing functionVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the grounding member and waterproof member into a single integrated component that performs both functions simultaneously. The grounding member includes a waterproof layer on its outer surface, eliminating the need for separate grounding and waterproofing parts. This merging principle directly resolves the contradiction by maintaining reliable grounding and waterproofing while significantly simplifying the assembly structure and reducing the number of components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The grounding member is designed as a multi-functional component that provides both electrical grounding and waterproof sealing functions. By making the grounding member universal (serving multiple purposes), the patent eliminates the need for separate dedicated grounding and waterproofing members, thereby reducing assembly complexity while maintaining both functions' reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If two rear bodies are used with multiple screws for coupling, then structural stability is achieved, but assembly time and production cost increase

Engineering Contradiction:

Improvestructural stabilityVSAvoidassembly time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent merges the two separate rear bodies into a single integrated rear body structure. The grounding member and waterproof member are combined into one component, and the connection portion is designed with stepped surfaces that provide structural stability without requiring multiple screws for coupling. This reduces assembly time while maintaining structural integrity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the traditional mechanical fastening system (multiple screws) with a stepped surface connection system. The connection portion includes first, second, and third stepped surfaces that provide mechanical interlocking and structural stability without requiring multiple screw fasteners, thereby significantly reducing assembly time and production cost.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If separate parts are used for grounding and waterproofing, then functional reliability is achieved, but part quantity and manufacturing cost increase

Engineering Contradiction:

Improvefunctional reliabilityVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges the grounding member and waterproof member into a single integrated component. The grounding member includes a conductive core with a waterproof layer on its outer surface, combining both grounding and waterproofing functions in one part. This reduces the number of parts from two separate members to one, while maintaining functional reliability through the multi-functional design.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The grounding member is designed as a universal component that performs both grounding and waterproofing functions. By making this single part multi-functional, the patent eliminates the need for separate dedicated grounding and waterproofing parts, thereby reducing the quantity of parts and manufacturing cost while maintaining functional reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4175279B1Camera module

Publication Date: 2025.12.17 LG INNOTEK CO LTD

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AI summary

The present embodiment pertains to a camera module comprising: a first body comprising a lens; a second body coupled to the first body and comprising a connection portion; and a sealing member and a ground member, arranged on the connection portion of the second body, wherein the connection portion comprises a first area having a first hole and a second area having a second hole of which the diameter is greater than the diameter of the first hole, the sealing member is arranged in the second area, the ground member is arranged to be spaced apart from the sealing member, and the second area is positioned between the first area and the ground member.