In-Vehicle Camera Rear Case Crimping to Avoid Resin Heat Damage

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Solution Overview

Problem

In-vehicle camera cases with metal ground shells and resin components are prone to deformation and breakage during welding, leading to defective products due to heat exposure.

Innovation Solution

The in-vehicle camera case is configured with a crimping mechanism using a boss member that projects from the rear case upper surface to engage with a connector module, eliminating heat-induced deformation and ensuring structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If welding is used to connect the boss to the ground shell coating layer, then the case is fixed and connected to the connector module, but heat causes deformation and breakage of resin components

Engineering Contradiction:
Improveconnection strengthVSAvoidheat damage to resin components
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the thermal welding process with a mechanical pressing process. The boss is pressed into the boss insertion part to achieve connection, eliminating heat generation and preventing deformation or breakage of resin components while maintaining connection strength.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If welding is used to connect the boss to the coating layer, then electrical connection is achieved, but resin components such as internal housing and waterproof member are damaged

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidcomponent integrity
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent replaces thermal welding with mechanical pressing, where the boss is pressed into the boss insertion part to establish both mechanical and electrical connections. This method maintains connection reliability while preserving the integrity of heat-sensitive resin components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Strength

If laser beam welding is used to melt the boss head, then the case is welded to the ground shell, but resin components are deformed and broken

Engineering Contradiction:
Improveweld strengthVSAvoidthermal damage to surrounding components
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent eliminates the laser welding process entirely by using a mechanical pressing method. The boss is pressed into the boss insertion part to achieve connection without melting or heat generation, thus preventing thermal damage to surrounding resin components while maintaining adequate connection strength.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration reduces the occurrence of defective products by avoiding heat-related deformation and maintains structural strength while effectively connecting the connector module to the case.

Implementation Method 1

The boss member is crimped in a state of being engaged with the connector module

Methodology Applied
Scientific EffectCrimping: Mechanical Fastener

Data Source

PatentUS12585171B2In-vehicle camera rear case and in-vehicle camera case
Publication Date: 2026.03.24 SMK CO LTD
  • US12585171B2 patent drawing
  • US12585171B2 patent drawing
  • US12585171B2 patent drawing

AI summary

An in-vehicle camera rear case includes: a rear case main body that is connected to a front case in an opposed manner, is provided with an insertion hole, is opened at one surface, and has a box shape; a connector module that electrically connects an external connector to an in-vehicle camera substrate, is inserted in the insertion hole, and is engaged with the rear case main body, and at least a part of which is made of a resin; and a housing that is engaged with the connector module. The rear case main body includes: boss members that are provided on a surface of an internal surface side rear case upper surface; and crimping reception surfaces provided on an external surface side rear case upper surface. The flange reception surface boss members are crimped in a state of being engaged with the connector module.