Front Pillar Lower Ridge Simultaneous Joining
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Solution Overview
Problem
The existing configuration of a front pillar lower in vehicles requires a joining order between a bracket and a bulk, increasing manufacturing costs and potentially leading to deformation under load, as the bracket and bulk are joined sequentially rather than simultaneously.
Innovation Solution
A front pillar lower design where the bracket and bulk are joined simultaneously to the ridge portion of the front pillar lower body, with a main cover covering the top plate and side covers superposed on the side plates, allowing for simultaneous attachment and enhanced load distribution in shear directions, thereby eliminating the need for sequential joining and reducing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bracket and bulk are joined sequentially to the front pillar lower body, then the joining process can be completed, but the manufacturing cost increases and the production time is extended
Solution Approach 1:
The patent merges the bracket and bulk into a single integrated component that is joined to the front pillar lower body in one operation. The bulk is designed with an integrated structure that includes both the reinforcing portion and the joining portions, allowing simultaneous attachment with the bracket to eliminate sequential joining steps and reduce manufacturing cost.
Solution Approach 2:
The bulk is pre-formed with integrated joining portions that are designed to accommodate both the bracket and the front pillar lower body simultaneously. This preliminary preparation of the bulk structure enables one-step joining without requiring intermediate assembly steps, thereby reducing production time and cost.
2Ease of manufacture
If the bracket is joined to the top plate of the ridge portion, then the joining space can be secured, but a joining order between bracket and bulk is created
Solution Approach 1:
The patent transitions from a single-plane joining approach to a multi-dimensional integrated joining structure. The bulk extends in multiple directions with joining portions positioned to engage both the bracket and the front pillar lower body simultaneously, allowing all components to be joined in one operation without requiring sequential attachment.
Solution Approach 2:
The bulk is designed as a multi-functional component that simultaneously serves as a reinforcing element and provides multiple joining interfaces. The integrated structure includes joining portions that can attach to both the bracket and the front pillar lower body, eliminating the need for separate joining operations and simplifying the overall assembly process.
3Strength
If the front pillar lower body is subjected to load in width directions, then the structural integrity is tested, but deformation away from the inner panel occurs
Solution Approach 1:
The patent applies local reinforcement by positioning the bulk's reinforcing portion at critical locations within the ridge portion where load concentrations occur. The bulk is strategically placed to provide localized stiffness and resistance against deformation in width directions, enhancing structural integrity without requiring uniform reinforcement throughout the entire component.
Solution Approach 2:
The patent creates a composite structural system by integrating the bulk with the front pillar lower body through multiple joining portions. This composite structure combines the load-bearing capabilities of different components, where the bulk and front pillar lower body work together to resist loads in width directions, preventing deformation away from the inner panel.
Data Source
AI summary
A front pillar lower includes a joining part where a front pillar lower body, a bracket, and a bulk are joined together. The front pillar lower body includes a ridge portion. The ridge portion includes a top plate and side plates. The bracket includes a main cover covering the top plate from an outside of the ridge portion to provide a space between the main cover and the top plate, and side covers superposed on the side plates from the outside of the ridge portion. The bulk includes a reinforcing portion arranged inside the ridge portion in a position overlapping with the space in thickness directions of the top plate, and flanges superposed on the side plates from an inside of the ridge portion. The joining part joins the side plate, the side cover, and the flange.