Modular Steering Wheel Shell Assembly for Lightweight Customization
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Solution Overview
Problem
Existing vehicle interior components, such as steering wheels, lack efficient assembly methods and modular designs that combine decorative and functional segments with lightweight construction, which limits their visual appeal, tactile experience, and ease of customization.
Innovation Solution
A steering wheel with a composite structure comprising a set of shell segments that can be assembled in axial and radial engagement onto a frame, featuring a cover layer and intermediate layer for a multi-segment appearance, and incorporating functional elements like hands-off sensors or heating mats, with snap-fit connectors for easy assembly and customization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a steering wheel is constructed with a composite structure comprising multiple shell segments, then the visual appeal and tactile experience are improved, but the device complexity increases
Solution Approach 1:
The steering wheel rim is divided into multiple independent shell segments that can be assembled separately onto the frame. Each segment can be manufactured independently and then joined together, allowing for complex visual designs while maintaining manufacturing efficiency and enabling modular assembly processes.
Solution Approach 2:
The shell segments are designed to nest together with interlocking features that allow one segment to fit within or alongside another. This nesting approach creates a multi-segment appearance while using standardized connection mechanisms that reduce overall assembly complexity.
2Productivity
If shell segments are designed with engagement portions for radial and axial engagement, then the assembly efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The engagement portions are segmented into discrete features such as protrusions and recesses that can be independently manufactured and assembled. This segmentation allows for tolerance accumulation to be managed locally at each joint rather than requiring high precision across the entire assembly.
Solution Approach 2:
Intermediate elements such as snap-fit connectors, clips, or bonding layers are introduced between shell segments to facilitate engagement. These intermediaries absorb dimensional variations and enable assembly without requiring extremely tight tolerances on the mating surfaces.
3Adaptability or versatility
If functional layers such as heating elements or sensors are integrated into shell segments, then the functionality is improved, but the device complexity increases
Solution Approach 1:
Multiple functional layers (heating elements, sensors, decorative surfaces) are merged into single integrated shell segments. This consolidation allows different functions to coexist within the same structural component, reducing the total number of separate parts while maintaining functional versatility.
Solution Approach 2:
The shell segments are designed as universal components that can accommodate multiple types of functional layers. The same basic segment structure can be configured with different functional elements depending on the application requirements, reducing design complexity through standardization.
Data Source
AI summary
A component for a vehicle interior may comprise a steering wheel comprising a frame and a composite structure comprising a set of segments. The set of segments may comprise a set of shell segments assembled in axial alignment on the frame and/or in radial engagement around the frame. The set of shell sections may comprise a shell section fit onto the frame; the set of shell sections may be configured for snap-fit assembly. The frame may comprise a feature/indentation facilitating axial alignment and/or radial engagement of a shell section on the frame. A shell section may comprise an engagement portion and/or positioning element. The set of shell sections may comprise a first section fit onto the frame and a second section fit with the first section. The steering wheel may comprise a modular design configured for efficient assembly and/or mass reduction.