Multi-articulated Link Knee Joint Bending Angle Detection
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Solution Overview
Problem
Existing multi-articulated link knee joints face challenges in adapting their bending angle detection configurations to be compatible with various types of auxiliary drivers, leading to increased costs and complexity in manufacturing different product groups.
Innovation Solution
A multi-articulated link knee joint design that includes a knee unit with a multi-articulated link mechanism, a position detector, and an angle detector, allowing the detection of the bending angle from the position of a driven member, which enables compatibility with different types of auxiliary drivers such as air cylinders or rotary hydraulic dampers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection configuration is customized for each auxiliary driver type, then the detection accuracy is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent applies universality by designing a detection configuration that can detect the bending angle of the knee unit regardless of the auxiliary driver type. The position detector detects the position of a driven member that moves in accordance with rotation of the upper link member, and the angle detector obtains the bending angle from this position information. This universal approach allows the same detection system to work with air cylinders, hydraulic cylinders, or rotary hydraulic dampers without customization, thereby reducing manufacturing cost and device complexity while maintaining detection accuracy
2Measurement precision
If different detection configurations are used for different auxiliary drivers, then the detection accuracy is improved, but the manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by implementing a universal detection configuration that serves multiple auxiliary driver types. The position detector and angle detector system is designed to obtain bending angle information from the position of a driven member that moves with upper link rotation, regardless of whether the auxiliary driver is an air cylinder, hydraulic cylinder, or rotary hydraulic damper. This eliminates the need to manufacture different detection systems for different product groups, thereby reducing overall manufacturing cost while maintaining detection accuracy
Data Source
AI summary
A multi-articulated link knee joint includes: a knee unit in which an upper link member is structured to rotate relative to a lower link member by a multi-articulated link mechanism including a plurality of link members including the upper link member and the lower link member; a driven member to move in accordance with the rotation of the upper link member; a position detector for detecting the position of the driven member, the position detector provided at the lower link member; and an angle detector for obtaining the bending angle of the knee unit from the position of the driven member.