In-Vehicle Robot Head Structure for 3D Human-Like Rotation
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Solution Overview
Problem
Existing in-vehicle robots can only rotate in two directions, limiting their ability to realistically simulate human head movements and thus falling short in personification and intelligence.
Innovation Solution
An in-vehicle robot design that allows three-dimensional movement around three axes, utilizing a base member, outer member, inner member, and multiple power transmission units to simulate human head movements, including a first power transmission unit for rotating the inner member around a first axis, a second power transmission unit for rotating the outer member around a second axis, and a third power transmission unit for rotating the outer member around a third axis that is non-parallel to the first and second axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head of the in-vehicle robot rotates only in two directions (up-down and right-left) using gear power transmission, then the mechanical structure is simple and reliable, but the personification and intelligentization are insufficient because it cannot simulate free human head movement
Solution Approach 1:
The patent adds a third rotational axis (yaw axis) to the existing two-axis system (pitch and roll axes), transforming the movement capability from two-dimensional to three-dimensional. This allows the robot head to rotate freely in multiple directions simultaneously, simulating natural human head movement patterns while maintaining a manageable structural complexity through modular gimbal design
2Adaptability or versatility
If multiple power transmission units are added to enable rotation around three axes, then the robot can simulate human head movements more realistically, but the device complexity increases
Solution Approach 1:
The patent divides the complex three-axis rotation system into separate modular power transmission units, each responsible for one rotational axis. This segmentation allows independent control and optimization of each axis while simplifying the overall system architecture, making the complex functionality more manageable and maintainable
Solution Approach 2:
The patent designs the power transmission units to be potentially interchangeable or multi-functional, where similar mechanical components (gears, shafts, bearings) can serve multiple purposes across different axes. This universality reduces the overall complexity by avoiding redundant specialized components for each axis
Data Source
AI summary
An in-vehicle robot includes a base member, an outer member, an inner member, and first, second, and third power transmission units. The base member is rotatably mounted to a mounting object. The outer member is supported by the base member. The inner member is positioned inside the outer member and supported by the outer member. The first power transmission unit allows the inner member to rotate around a first axis with respect to the outer member. The first axis passes through a portion of the inner member supported by the outer member. The second power transmission unit allows the outer member to rotate around a second axis. The second axis passes through a portion of the outer member supported by the base member. The third power transmission unit allows the outer member to rotate around a third axis that is non-parallel to both the first axis and the second axis.