Vehicle Frame Structure Integrating Support and Side Frames
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Solution Overview
Problem
Existing vehicle frame structures are heavy and costly due to the use of multiple parts, including additional brackets, which also compromise structural rigidity, especially in the up-down direction.
Innovation Solution
A vehicle frame structure that integrates a side frame and a support frame, where the support frame includes a body portion, an arm portion, and a fixing portion with a slit, allowing the fastening member to detach in the vehicle width direction during collisions, eliminating the need for additional brackets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional brackets and fixing members are used to connect the support frame to the side frame, then the structural rigidity is improved, but the number of parts increases and the overall weight increases
Solution Approach 1:
The patent merges the bracket and fixing member into a single integrated fixing portion that is formed as one piece with the support frame. This eliminating the need for separate brackets and reducing the total number of parts while maintaining the connection function between the support frame and side frame.
Solution Approach 2:
The fixing portion serves multiple functions: it acts as both the connection element between frames and the fixing element that secures the support frame to the side frame. This multi-functionality reduces the need for separate dedicated components.
2Strength
If additional brackets and fixing members are used to connect the support frame to the side frame, then the structural rigidity is improved, but the overall weight increases
Solution Approach 1:
The patent merges the bracket and fixing member into a single integrated fixing portion that is formed as one piece with the support frame. This eliminating the need for separate brackets and reducing the total number of parts while maintaining the connection function between the support frame and side frame.
3Weight of stationary object
If the support frame is made of aluminum to improve rigidity, then the weight is reduced, but the bracket fixed to the support frame must be made of iron to improve rigidity, increasing the number of parts and overall weight
Solution Approach 1:
The patent merges the bracket and fixing member into a single integrated fixing portion that is formed as one piece with the support frame. This eliminating the need for separate brackets and reducing the total number of parts while maintaining the connection function between the support frame and side frame.
Solution Approach 2:
The fixing portion is made of the same material as the support frame (aluminum), creating a homogeneous structure. This eliminates the need for different materials (iron bracket on aluminum support frame) and reduces the number of parts while maintaining sufficient rigidity.
Data Source
AI summary
The disclosure provides a vehicle frame structure capable of achieving light weight and cost reduction while maintaining good structural rigidity. A vehicle frame structure includes a side frame and a support frame. The side frame is disposed at a side portion of a vehicle and extends in a vehicle front-rear direction. The support frame is disposed below the side frame to support a suspension member and includes a body portion, an arm portion extending upwards from the body portion, and a fixing portion disposed on an upper end of the arm portion. The fixing portion of the support frame and a lower end of the side frame are fixed to each other via a fastening member extending in a vehicle up-down direction. The fixing portion has a slit formed towards the outside in a vehicle width direction from a through hole into which the fastening member is inserted.