Symmetrical Frame Structure for Vehicle Suspension Assembly

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Solution Overview

Problem

Frame vehicles face increased component and manufacturing costs due to differing front and rear suspension structures, which complicates design and assembly.

Innovation Solution

A vehicle structure with symmetrical front and rear frame portions and suspensions, sharing the same shape and mounting structures, connected to a central frame, reduces component variability and manufacturing complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If front and rear suspensions are designed with different structures to meet functional requirements, then vehicle performance is improved, but the number of components and manufacturing complexity increases

Engineering Contradiction:
Improvevehicle performanceVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing the front and rear suspensions with identical structures that can serve multiple functions. The symmetric suspension design allows the same components to be used at both front and rear axles, reducing the total number of unique parts while maintaining the ability to meet different functional requirements through positioning and configuration rather than structural differentiation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs asymmetry in reverse - it deliberately uses symmetry in the suspension design where front and rear suspensions are made identical in structure. This symmetric approach contradicts the conventional asymmetric design but effectively reduces component variety and manufacturing complexity while still accommodating different functional needs through the overall vehicle layout and component placement.

Inventive Principle:
Principle #4Asymmetry

2Adaptability or versatility

If front and rear frame portions are designed with different shapes to support different suspensions, then suspension functionality is improved, but manufacturing cost increases

Engineering Contradiction:
Improvesuspension functionalityVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The frame portions at the front and rear are designed with identical shapes that can universally support the same suspension structure. This universal design allows a single frame component type to be used at both ends of the vehicle, significantly reducing manufacturing costs through economies of scale and simplified production processes while still providing the necessary support for suspension functionality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the design of front and rear frame portions into a single standardized component type. By combining the design requirements for both front and rear frame sections into one universal design, the patent eliminates the need for separate manufacturing processes for different frame portions, thereby reducing overall manufacturing cost while maintaining functional requirements.

Inventive Principle:
Principle #5Merging (Combining)

3Strength

If connecting structures between central frame and side frame portions are made different for front and rear, then structural optimization is improved, but assembly complexity increases

Engineering Contradiction:
Improvestructural optimizationVSAvoidassembly complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The connecting structures between the central frame and the front/rear side frame portions are designed to be identical, creating a universal connection system. This allows the same connecting components and assembly procedures to be used at both ends of the vehicle, reducing assembly complexity and training requirements while still providing structurally optimized connections that meet the strength requirements for both front and rear suspensions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If mounting structures for front and rear suspensions are made different, then suspension performance is improved, but assembly cost increases

Engineering Contradiction:
Improvesuspension performanceVSAvoidassembly cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The mounting structures for the front and rear suspensions are designed to be identical, creating a universal mounting system that can be used at both ends of the vehicle. This universal mounting design reduces assembly cost by allowing standardized mounting components to be purchased in larger quantities and by simplifying the assembly process through repetition of the same procedures. The suspension performance requirements are met through the overall symmetric design and proper positioning rather than through differentiated mounting structures.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11447183B2Vehicle structure of frame vehicle
Publication Date: 2022.09.20 TOYOTA JIDOSHA KK
  • US11447183B2 patent drawing
  • US11447183B2 patent drawing
  • US11447183B2 patent drawing

AI summary

A vehicle structure of a frame vehicle includes a central frame portion, a front-side frame portion, and a rear-side frame portion as a frame. A first section of the front-side frame portion from a connecting portion (a rear end portion) to a central frame portion through a portion supporting a front suspension, and a second section of the rear-side frame portion from a connecting portion (a front end portion) to the central frame portion through a portion supporting a rear suspension are formed so as to be symmetrical to each other in the front-rear direction with respect to the central frame portion. The front and rear suspensions are attached to the front-side and rear-side frame portions, respectively, so that the front and rear suspensions are symmetrical to each other in the front-rear direction with respect to the central frame portion.