Vehicle Door Handle PCB Overmolding for Compact Environmental Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle door handles with integrated electronic components face challenges in optimizing installation space, mechanical stability, and protection from environmental influences, particularly when subjected to mechanical deformation loads and leverage forces.
Innovation Solution
The vehicle door handle incorporates a printed circuit board held by a support member, overmolded with plastic to form a stiffening layer that provides mechanical reinforcement and protection, ensuring gap-free encapsulation and improved mechanical stability while reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electronic components are accommodated in a container filled with plastic material (potting), then protection from environmental influences is improved, but installation space increases and mechanical stability deteriorates
Solution Approach 1:
The printed circuit board is nested directly within the support member structure, eliminating the need for a separate container. The support member itself serves as the housing, creating a compact integrated assembly that reduces installation space while maintaining protection.
Solution Approach 2:
A thin plastic coating is applied directly to the printed circuit board instead of using bulky potting material. This thin film provides environmental protection while occupying minimal space and maintaining mechanical stability of the overall assembly.
2Object-affected harmful factors
If electronic components are accommodated in a container filled with plastic material (potting), then protection from environmental influences is improved, but the handle becomes heavy and bulky
Solution Approach 1:
A thin plastic coating is applied directly to the printed circuit board instead of using bulky potting material. This thin film provides environmental protection while occupying minimal space and maintaining mechanical stability of the overall assembly.
Solution Approach 2:
The excessive plastic material used in traditional potting is extracted/removed, retaining only the essential protective function through a thin coating. This eliminates the unnecessary weight and bulk while maintaining the core protection capability.
3Volume of moving object
If the printed circuit board is accommodated directly in the support member, then installation space is optimized, but protection from environmental influences deteriorates
Solution Approach 1:
A thin plastic coating is applied directly to the printed circuit board, providing environmental protection in the form of a protective film that does not significantly increase the dimensions of the assembly.
Solution Approach 2:
The printed circuit board is combined with a plastic coating to create a composite structure that integrates both the electronic functionality and environmental protection in a space-efficient manner.
4Strength
If the printed circuit board is accommodated directly in the support member, then mechanical stability is improved, but protection from environmental influences deteriorates
Solution Approach 1:
A thin plastic coating is applied directly to the printed circuit board, providing environmental protection in the form of a protective film that does not significantly increase the dimensions of the assembly.
Solution Approach 2:
The printed circuit board is combined with a plastic coating to create a composite structure that integrates both the electronic functionality and environmental protection in a space-efficient manner.
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
The overmolded stiffening layer enhances mechanical stability, protects electronic components from environmental factors, and optimizes installation space, while maintaining operational reliability and sensitivity of sensors.
Implementation Method 1
the printed circuit board is overmolded with a plastic so that the plastic forms a stiffening layer around the printed circuit board
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A vehicle door handle (1) comprises a housing (2a, 2b) with a grasping portion (3) and a base portion (4). The grasping portion (3) is integrally formed with the base portion (4) and extends at an angle therefrom. A support member (6) is received in the housing (2a, 2b), which extends at least in sections both in the base portion (4) and in the grasping portion (3). The grasping portion (3) of the housing (2a, 2b) is fixedly coupled or integrally connected to a coupling member (7), which extends on one side out of the base portion (4) of the housing (2a, 2b) to allow coupling to a body component (10) of a motor vehicle. The coupling member (7) is characterised in that a holder (6a) for an electronic printed circuit board (12) is formed in the support member (6). The support member (6) is formed with a circuit board (12), which is at least partially overmoulded with at least one plastic material for the purposes of stiffening and protection. The plastic forms a stiffening layer (14) which is applied in direct contact with the printed circuit board (12.