Modular Roof Side Assembly for Flexible Vehicle Body Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle body structures require numerous molds and devices for mass production, making them less suitable for future mobility markets focused on multi-type small-volume production.
Innovation Solution
A vehicle body structure with a reduced number of components, featuring a roof side assembly that includes a pipe, upper, lower, and inner reinforcement members, and C-pillar mounting brackets, secured by multiple fastening bolts, allowing for easy variation and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vehicle body structures with A, B, and C-pillars connected through welding in a press panel type are used, then mass production is advantageous, but a large number of molds and other devices are required which makes them unsuitable for multi-type small-volume production
Solution Approach 1:
The vehicle body structure is divided into modular components: a lower vehicle body and a roof side assembly that can be separately manufactured and then assembled. The roof side assembly includes integrated pillars (A, B, C-pillars) and roof panels as a single modular unit, reducing the need for multiple molds while enabling flexible production for different vehicle types.
Solution Approach 2:
The roof side assembly is designed as a universal module that can be adapted to multiple vehicle types and configurations. By integrating the pillars and roof panels into a single assembly unit with standardized mounting interfaces, the same basic module can serve different vehicle models, reducing the number of specialized molds needed for small-volume production.
2Adaptability or versatility
If the number of vehicle body components is reduced, then easy variation of vehicle body configuration is enabled, but structural strength and stability may be compromised
Solution Approach 1:
Multiple structural elements (A-pillar, B-pillar, C-pillar, and roof panels) are merged into a single integrated roof side assembly. This consolidation reduces the total number of components while maintaining structural integrity through the unified design and rigid connections within the assembly, allowing easy variation of vehicle configurations without compromising strength.
Solution Approach 2:
The roof side assembly utilizes composite construction methods where different materials (such as steel for pillars and aluminum or composite panels for roof panels) are combined within the integrated structure. This allows the assembly to achieve high strength-to-weight ratio while maintaining configuration flexibility for different vehicle types.
Data Source
AI summary
A vehicle body structure includes: a roof side assembly connecting upper ends of pillars of a vehicle body along the forward/backward direction of the vehicle body, the roof side assembly constituting an A-pillar of the vehicle body; and an outer garnish coupled to the outside of the roof side assembly, wherein the roof side assembly includes: a pipe having a closed cross-section shape and elongated in the forward/backward direction of the vehicle body so as to form a closed section; an upper reinforcement member coupled to the upper side of the pipe and elongated in the forward/backward direction of the vehicle body; a lower reinforcement member coupled to the lower side of the pipe and elongated in the forward/backward direction of the vehicle body; and an inner reinforcement member coupled to the vehicle body inner side of the pipe and elongated in the forward/backward direction of the vehicle body.