Roll Block System for Three-Wheeled Vehicle
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Solution Overview
Problem
Existing roll block systems for three-wheeled motor vehicles are complex, inhibit pitching and steering movements, and increase production costs due to the need for multiple blocking devices, leading to potential safety issues and reduced stability during braking and impacts.
Innovation Solution
A roll block system for a rolling motor vehicle that connects the two front wheels via a second kinematic mechanism, allowing it to block rolling movements while maintaining freedom for pitching and steering movements, using a simple and cost-effective design with telescopic rods that extend parallel to the axle journals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a roll block system with multiple blocking devices is used to prevent rolling movements, then rolling prevention is improved, but device complexity increases and pitching movements are inhibited
Solution Approach 1:
The patent merges the rolling prevention function into a single blocking device that acts on the articulated quadrilateral mechanism. Instead of using separate blocking devices for each wheel's shock absorber, the invention combines the blocking action into one mechanism that prevents rolling while allowing pitching movements to occur naturally.
Solution Approach 2:
The single blocking device is designed to selectively prevent rolling movements while permitting pitching movements. The blocking mechanism achieves multi-functionality by differentiating between rolling and pitching motions, blocking only the harmful rolling component while allowing the useful pitching component to proceed.
2Reliability
If multiple blocking devices are used to prevent rolling, then rolling prevention is improved, but production costs increase
Solution Approach 1:
The invention reduces production costs by merging multiple blocking devices into a single blocking device. This consolidation reduces the number of parts that need to be manufactured, assembled, and maintained, thereby lowering production costs while maintaining effective rolling prevention.
3Reliability
If shock absorbers are blocked to prevent rolling, then rolling prevention is improved, but pitching freedom is lost and structural loads increase
Solution Approach 1:
The blocking device achieves universality by selectively preventing rolling movements while allowing pitching movements. The mechanism differentiates between the two types of motion and applies blocking only to rolling, thereby maintaining pitching freedom while ensuring rolling prevention.
4Reliability
If a complex roll block system with multiple calipers is used, then rolling prevention is improved, but ease of operation deteriorates
Solution Approach 1:
The invention simplifies system operation by merging multiple calipers into a single blocking device. This reduces the complexity of operation, requiring only one blocking mechanism to be actuated rather than coordinating multiple independent calipers, thereby improving ease of operation while maintaining rolling prevention effectiveness.
Data Source
AI summary
The present invention relates to a forecarriage of a rolling motor vehicle with three or four wheels, comprising: —a forecarriage frame; at least one pair of front wheels kinematically connected to each other and to the forecarriage frame by means of a first kinematic mechanism which enables the front wheels to roll in a synchronous and specular manner, each wheel being connected to the first kinematic mechanism by means of a respective axle journal the latter being mechanically connected to a rotation pin of the wheel in order to support it rotatably around an axis of rotation, —a roll block system; —suspension means which guarantee each axle journal at least one spring suspension movement with respect to said first kinematic mechanism.