Four-Wheel Steering Transmission Structure Without Large-Angle Dead Spots
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Solution Overview
Problem
Existing automotive systems face limitations in achieving large-angle steering due to dead spots in the interaction between the driving power system and the steering power system, preventing vehicles from performing lateral movement, steering, turning around, or in-place turning within a small range.
Innovation Solution
A structure for multi-directional driving and steering of a four-wheeled vehicle is introduced, featuring a complex transmission mechanism with multiple rotatably arranged transmission portions that allow for the simultaneous transmission of driving and steering power without interference, enabling steering angles of at least 180 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional driving power system and steering power system are used cooperatively, then the systems can function independently, but large-angle steering cannot be achieved due to dead spots in the structures
Solution Approach 1:
The patent merges the driving power transmission and steering power transmission into a unified transmission system. The third transmission portion receives both driving power from the first transmission portion and steering power from the second transmission portion, combining two previously separate power flows into one integrated system that eliminates dead spots and enables multi-directional movement.
Solution Approach 2:
The patent introduces dynamic adaptability through the third transmission portion that can rotatably connect to both the first transmission portion (driving) and second transmission portion (steering). This dynamic configuration allows the system to adapt between different power transmission modes, enabling steering angles of at least 180 degrees and various movement patterns including lateral movement and in-place turning.
2Reliability
If the driving power system and steering power system are structurally optimized for their respective functions, then each system performs well independently, but dead spots occur during cooperative use that prevent large-angle steering
Solution Approach 1:
The third transmission portion acts as an intermediary that mediates between the driving power system (first transmission portion) and the steering power system (second transmission portion). It receives and integrates both power streams, transmitting them to the fourth transmission portion simultaneously, thereby eliminating the dead spots that occur when traditional independent systems are used cooperatively.
Solution Approach 2:
The third transmission portion is designed with multi-functionality, serving as a common transmission node that handles both driving power and steering power. This universal component enables the system to achieve multiple functions including forward driving, lateral movement, large-angle steering, and in-place turning, while maintaining reliable power transmission throughout.
Data Source
AI summary
A structure for multi-directional driving and steering of a four-wheeled vehicle is provided. The structure includes a frame; a mounting frame fixedly arranged on the frame; a first transmission portion rotatably arranged on the mounting frame; and a second transmission portion rotatably arranged on the mounting frame. The structure also includes a third transmission portion rotatably arranged on the first transmission portion and the second transmission portion; and a fourth transmission portion rotatably arranged below the third transmission portion. The structure further includes a mounting seat connected to the mounting frame through a shock absorber; a driving power input rotation shaft arranged on the mounting frame and connected to the first transmission portion; a steering power input rotation shaft arranged on the mounting frame and connected to the second transmission portion; and a driving power output shaft arranged on the fourth transmission portion.