Vehicle Side Lower Body Structure with Nested Center Pillar
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Solution Overview
Problem
The existing side lower vehicle body structures fail to adequately enhance the connection rigidity between the center pillar and the side sill, particularly in convertible vehicles, which compromises safety during broadside collisions.
Innovation Solution
A side lower vehicle body structure featuring a side sill with a channel and a center pillar, where a reinforcing member is integrated to increase the connection rigidity by forming a ""-shaped cross-section, enhancing the assembly groove and fastening flanges for secure attachment, thereby increasing torsional and bending rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the center pillar is welded to the side sill, then connection rigidity is improved, but the device complexity increases
Solution Approach 1:
The center pillar is inserted into the channel of the side sill, forming a nested structure where one component fits within another. This nesting arrangement enhances connection rigidity while avoiding complex welding procedures, as the inserted configuration provides inherent structural stability.
Solution Approach 2:
The side sill channel extends in the longitudinal direction of the vehicle, creating a three-dimensional insertion path for the center pillar. This dimensional approach allows the center pillar to be securely positioned within the channel, improving connection rigidity through spatial arrangement rather than complex joining methods.
2Strength
If torsional rigidity of the lower vehicle body is increased, then broadside collision performance is improved, but the device complexity increases
Solution Approach 1:
The center pillar and side sill are combined into an integrated assembly where the center pillar is inserted into the side sill channel. This merging of components creates a unified structural unit that inherently resists torsional forces, improving broadside collision performance without requiring additional complex reinforcement structures.
Solution Approach 2:
The side sill channel and center pillar are designed as composite structural elements with specific cross-sectional geometries. The channel structure of the side sill combined with the inserted center pillar creates a composite assembly that provides enhanced torsional rigidity through geometric configuration rather than material complexity.
3Strength
If the bending rigidity of the side sill is increased, then connection rigidity at joints is improved, but the device complexity increases
Solution Approach 1:
The center pillar is nested within the channel of the side sill, creating a reinforced configuration where the inner component (center pillar) is supported by the outer structure (side sill channel). This nesting arrangement enhances bending rigidity at the joint without requiring additional complex reinforcement elements.
Data Source
AI summary
A side lower vehicle body structure of a vehicle includes a side seal, a center pillar and a reinforcing member. The side seal extends in a longitudinal direction of the vehicle and has a channel. The center pillar has one end disposed in the channel of the side seal and the other end extending in a height direction of a vehicle. The reinforcing member is disposed in the channel of the side seal and combined with the center pillar.