Side Sill Bracket Structure for Side-Collision Energy Transfer
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Solution Overview
Problem
In vehicles, particularly electric vehicles and SUVs, the reinforcement member is not effectively connected to the side sill outer, leading to reduced survival space and increased occupant injury during side collisions due to unmanaged collision energy and rotation deformation of the side sill.
Innovation Solution
A side sill bracket is introduced to connect the side sill outer and reinforcement member, transmitting collision energy to the reinforcement member, thereby preventing rotation deformation and reducing the penetration of the center pillar into the vehicle compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the reinforcement member is not directly connected to the side sill outer, then the device complexity is reduced, but the strength and collision resistance deteriorate
Solution Approach 1:
A side sill bracket is introduced as an intermediary component to connect the reinforcement member and the side sill outer. The bracket includes an external bonding portion coupled to the side sill outer, an internal support portion contacting the reinforcement member, and a connection portion joining these two portions, thereby transmitting collision energy from the side sill outer to the reinforcement member.
2Ease of manufacture
If the side sill outer is not connected to the reinforcement member, then the manufacturing process is simplified, but the reliability in side collision deteriorates
Solution Approach 1:
The connection structure is segmented into three distinct portions: an external bonding portion for coupling to the side sill outer, an internal support portion for contacting the reinforcement member, and a connection portion for joining these two portions. This segmentation allows for easier manufacturing and assembly while ensuring reliable collision performance.
3Strength
If the side sill bracket connects the side sill outer and reinforcement member, then the strength against collision is improved, but the device complexity increases
Solution Approach 1:
The side sill bracket merges multiple functions into a single component: the external bonding portion for attachment to the side sill outer, the internal support portion for contact with the reinforcement member, and the connection portion for joining these two portions. This integration ensures effective collision energy transmission while maintaining structural efficiency.
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
The side sill bracket enhances the vehicle's ability to withstand side collisions by securely transmitting collision energy, maintaining occupant survival space and reducing injury by minimizing the center pillar's intrusion into the vehicle interior.
Implementation Method 1
an external bonding portion coupled to a side sill outer
Implementation Method 2
a connection portion connecting the external bonding portion and the internal support portion
Implementation Method 3
the internal support portion is supported in contact with the reinforcement member fastened to the side sill internal
Data Source
AI summary
A side sill assembly for a vehicle includes a side sill inner, a side sill outer including an upper end portion and a lower end portion connected to the side sill inner, and a reinforcement member disposed between the side sill internal and the side sill outer in a longitudinal direction of the vehicle and fastened to the side sill internal further includes a side sill bracket mounted between the side sill outer and the reinforcement member and configured to support the side sill outer and the reinforcement member between the side sill outer and the reinforcement member to improve a stiffness against a side collision.