Caring Device Standing Support Trajectory Control
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Solution Overview
Problem
There is a need for a caring device that simplifies the driving device to reduce size and manufacturing costs while allowing the support member to adjust in the up-down direction to accommodate the cared person's physique and seat height, and to move accordingly during standing operations.
Innovation Solution
A caring device with a base, first and second arms that revolve around horizontal axes, a support member for the upper half body, an adjustment command section, a standing operation command section, and a control device that coordinates the arms to adjust the support member's position and movement trajectory based on commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex driving device with multiple rotating devices is used to enable the support member to move to arbitrary positions and angles, then the support member can be positioned flexibly, but the device size and manufacturing cost increase
Solution Approach 1:
The support member is designed to perform multiple functions: it serves as both the supported structure and the driving mechanism. By integrating the driving function into the support member itself, the patent eliminates the need for separate complex rotating devices, thereby reducing device complexity while maintaining positioning flexibility
Solution Approach 2:
The patent merges the support function and driving function into a single integrated component (the support member). This combination allows the support member to both support the cared person and provide the necessary movement capabilities, simplifying the overall device structure while achieving the required adaptability
2Adaptability or versatility
If the support member position is fixed, then the device structure is simple, but the device cannot accommodate different physiques and seat heights
Solution Approach 1:
The support member is designed with dynamic positioning capability, allowing it to move to different positions and angles. This dynamic design enables the device to adapt to various physiques and seat heights while maintaining a relatively simple structure through the integrated driving mechanism
3Adaptability or versatility
If the support member can move in the up-down direction to accommodate different physiques and seat heights, then the adjustment capability is improved, but the device complexity increases
Solution Approach 1:
The support member integrates multiple functions including vertical movement, horizontal movement, and positioning adjustment. This multi-functionality allows the device to accommodate different physiques and seat heights without requiring separate mechanisms for each adjustment type, thereby limiting the increase in device complexity
Data Source
AI summary
A caring device includes an adjustment command section configured to give a command for an adjustment of a standing start position of a support member, a standing operation command section configured to give a command for assistance of the standing operation using the support member, and a control device. The control device perform a cooperative operation of the first arm and the second arm so that the support member moves in an up-down direction when a command of the adjustment command section is received. The control device performs a cooperative operation of the first arm and the second arm so that a reference position of the support member moves along different movement trajectories in accordance with the standing start position adjusted by the command of the adjustment command section when a command of the standing operation command section is received.