Electromagnetic Actuator Housing With Overmolded Spring Mounts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional electromagnetic actuator housings, such as tub-based designs, face manufacturing challenges like cracks and wrinkles due to high strain, leading to increased costs and reduced reliability, and require thicker materials that reduce interior space and robustness.
Innovation Solution
The use of a U-shaped cover and overmolding process reduces part count, assembly complexity, and manufacturing costs by attaching the movable mass, springs, and plates through molding, eliminating the need for welding and simplifying alignment, while allowing non-ferromagnetic mounting plates for improved weldability and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tub-based housing designs are used, then structural strength is provided, but manufacturing defects (cracks and wrinkles) occur due to high strain, reducing reliability and increasing costs
Solution Approach 1:
The housing is divided into multiple separate components (first housing component, second housing component, third housing component) that are assembled together using fastening elements, avoiding the high-strain forming process of traditional tub-based designs while maintaining structural integrity
Solution Approach 2:
The mounting plates are integrated directly into the housing components, eliminating separate mounting plate assemblies and reducing the overall part count, which simplifies manufacturing and assembly processes
2Strength
If thicker materials are used in traditional housing designs, then structural robustness is improved, but interior space is reduced
Solution Approach 1:
By segmenting the housing into multiple thin-walled components that are assembled together, the design achieves structural robustness without requiring thick materials, thereby maximizing interior space for the movable mass and other components
Solution Approach 2:
The housing uses composite construction with multiple components fastened together, creating a structurally strong assembly from thinner materials, optimizing the strength-to-space ratio
3Adaptability or versatility
If multiple separate components are used in housing assembly, then assembly flexibility is improved, but assembly complexity increases
Solution Approach 1:
Mounting plates are merged with housing components, reducing the number of separate parts and simplifying the assembly process while maintaining the flexibility of modular construction
Solution Approach 2:
The fastening elements are designed as separate, standardized components that can be easily extracted and replaced, simplifying assembly and disassembly operations while maintaining modular flexibility
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 approach enhances force density, space savings, and reliability, while reducing manufacturing scrap rates and operational costs, maintaining or improving performance characteristics compared to traditional hoop and tub-based housings.
Implementation Method 1
a first spring and a second spring, respectively attached to first and second opposite ends of the movable mass
Data Source
AI summary
An electronic device includes a housing. The housing includes a first plate defining a first wall; a cover defining a second wall opposite the first wall, a first sidewall, and a second sidewall opposite the first sidewall; and a second plate and a third plate, respectively defining a third sidewall, and a fourth sidewall opposite the third sidewall. The first, second, third, and fourth sidewalls extend between the first wall and the second wall. The electronic device further includes a movable mass disposed within the first, second, third, and fourth sidewalls of the housing; a first spring and a second spring, respectively attached to first and second opposite ends of the movable mass; and a first material and a second material, respectively joining the first spring to the second plate and the second spring to the third plate.