Tiltable Vehicle Frame with Adjustable Front Track Width
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Solution Overview
Problem
Existing three-wheeled vehicles with tiltable frames face instability at low speeds and limited maneuverability, while also consuming excessive parking space.
Innovation Solution
A vehicle design featuring a tiltable frame portion coupled with a drive rear axle and a non-tiltable front axle with adjustable track width, allowing for wide or narrow track configurations, along with a self-tilting mechanism and steering controls to enhance stability at high speeds and maneuverability at low speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle uses a fixed wide track configuration, then stability at high speeds is improved, but parking space consumption increases and maneuverability at low speeds deteriorates
Solution Approach 1:
The front wheel track width is made dynamically adjustable between wide and narrow configurations. The suspension system allows the front wheels to be positioned widely apart for high-speed stability, then brought close together for low-speed maneuverability and compact parking, resolving the contradiction between stability and space consumption through dynamic reconfiguration
2Area of stationary object
If the vehicle uses a fixed narrow track configuration, then parking space consumption is reduced and maneuverability at low speeds is improved, but stability at high speeds deteriorates
Solution Approach 1:
The front wheel track width is made dynamically adjustable between wide and narrow configurations. The suspension system allows the front wheels to be positioned widely apart for high-speed stability, then brought close together for low-speed maneuverability and compact parking, resolving the contradiction between stability and space consumption through dynamic reconfiguration
3Stability of the object's composition
If the vehicle frame is tiltable, then stability at high speeds is improved, but maneuverability at low speeds deteriorates
Solution Approach 1:
The frame tilting capability is made dynamically controllable. The tilting mechanism is activated during high-speed operation to provide stability, while being deactivated or blocked during low-speed maneuvering to maintain ease of control, allowing the system to adapt its stability characteristics based on operating conditions
4Stability of the object's composition
If the wheel base is significantly longer, then stability at high speeds is improved, but maneuverability at low speeds and parking capability deteriorates
Solution Approach 1:
The wheel base length is made dynamically adjustable through the suspension system. During high-speed operation, the front wheels are positioned to create a longer wheel base for enhanced stability. During low-speed maneuvering and parking, the front wheels are brought closer together, effectively shortening the wheel base and improving maneuverability and parking capability
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~4
AI summary
A vehicle comprising a frame comprising a tiltable portion (163) tiltable about a longitudinal axis (164) of the vehicle and coupled with a drive rear axle with a rear wheel (121), a non-tiltable portion (162) coupled with a front axle with a pair of front wheels (111, 112) a main body portion (165) coupled with the tiltable frame portion (163). The front wheels (111, 112) have a track width adjustable between a wide track and a narrow track by track width control means, such that for the wide track of the front wheels (111, 112) the wheel base is significantly longer than for the narrow track of the front wheels (111, 112). The vehicle further comprises tilting means (166) for tilting the tiltable frame portion (163) when the front wheels (111, 112) are set to the wide track and steering means configured to control the turn of the rear wheel (121) when the front wheels (111, 112) are set to the narrow track.