Integrated Sub-Frame Torque Rod Support and Jack-Up Load Reinforcement
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Solution Overview
Problem
Existing sub-frames require separate components to support torque rods and withstand jack-up loads, leading to increased weight and complexity in manufacturing.
Innovation Solution
A sub-frame design featuring a main body portion with integrated torque rod support and a reinforcement plate that disperses jack-up loads, reducing weight and facilitating die-casting production by incorporating strategically positioned openings and a top plate with ribs for enhanced rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate components (bracket and reinforcement member) are used to support torque rod and withstand jack-up load, then structural strength is improved, but device complexity and weight increase
Solution Approach 1:
The patent combines the torque rod support function and jack-up load reinforcement function into a single integrated sub-frame structure. The reinforcement plate is integrated with the sub-frame body to form a unified structure that simultaneously supports the torque rod and resists jack-up loads, eliminating the need for separate bracket and reinforcement member components.
Solution Approach 2:
The sub-frame structure is designed to perform multiple functions: it supports the torque rod through the first shaft support portion, withstands jack-up loads through the reinforcement plate, and provides structural rigidity through the integrated design. This multi-functional approach reduces the number of separate components needed.
2Strength
If separate components are used to support torque rod and withstand jack-up load, then structural strength is improved, but weight increases
Solution Approach 1:
By merging the torque rod support and jack-up load reinforcement into a single integrated sub-frame structure, the patent eliminates the weight of separate components while maintaining the necessary structural strength through the unified design.
3Strength
If solid main body portion is used, then structural strength is improved, but manufacturing difficulty and weight increase
Solution Approach 1:
The sub-frame structure is segmented into distinct functional regions: the first shaft support portion for torque rod support, the second opening portion for weight reduction and die access, and the reinforcement plate for jack-up load resistance. This segmentation allows for optimized manufacturing while maintaining structural integrity.
Solution Approach 2:
The patent introduces a second opening portion in the bottom surface of the main body portion, creating a through-opening structure that allows die-casting dies to access and form the first shaft support portion from below. This dimensional change in the structure enables easier manufacturing of complex geometries.
4Weight of moving object
If second opening portion is added to main body portion, then weight is reduced and manufacturing is facilitated, but structural strength may be compromised
Solution Approach 1:
The second opening portion is strategically positioned in the bottom surface of the main body portion, creating a through-opening that reduces weight while allowing die-casting access. The opening is designed to minimize impact on structural strength by positioning it to allow die passage while maintaining the integrity of load-bearing regions.
Solution Approach 2:
The sub-frame uses an integrated structure combining the main body portion with the reinforcement plate, creating a composite-like structure where the reinforcement plate compensates for potential strength reductions from the openings while adding reinforcement where needed.
Data Source
AI summary
A sub-frame includes: a main body portion that has a vehicle body support portion supported by a vehicle body; and a reinforcement plate that is attached to a bottom surface of the main body portion. The main body portion includes a torque rod support portion which supports a torque rod coupled to a power unit. The torque rod support portion has a first shaft support portion which supports one end of a shaft supporting the torque rod, a first opening portion into which the torque rod is able to be inserted, and a second opening portion which is formed below the first shaft support portion. The reinforcement plate has a second shaft support portion supporting the other end of the shaft and covers the second opening portion from below.