Assist Instrument Wearing-Removal Member Dynamics
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Solution Overview
Problem
Existing assist instruments that use elastic members for muscle assistance are difficult to wear or remove due to the need to extend and contract these members while in use, making the process cumbersome.
Innovation Solution
The assist instrument incorporates a wearing-removal member with an assist unit that uses power-supplied extension and contraction actions, controlled by a control unit, and an adjusting mechanism to facilitate easy donning and doffing by extending or contracting the member during these processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic member is used to assist muscle in the assist instrument, then the assist instrument can provide muscle assistance, but the assist instrument becomes difficult to wear or remove because the elastic member needs to be extended and contracted while in use
Solution Approach 1:
The patent applies dynamics by making the wearing-removal member dynamically adjustable in length through extension and contraction. The member can be extended to a longer length for easy wearing and removal, and contracted to a shorter length for effective muscle assistance, allowing the system to adapt its state based on operational requirements
Solution Approach 2:
The patent changes the physical parameter of the wearing-removal member's length between two states: an extended state for donning and doffing, and a contracted state for providing assistive force. This parameter change enables the member to fulfill different functional requirements at different times
2Reliability
If the assist instrument is designed to contact the body closely when worn, then the assist performance is improved, but the wearing and removal process becomes more difficult due to the elastic member's resistance
Solution Approach 1:
The control unit performs preliminary action by automatically extending the wearing-removal member before the user needs to wear or remove it. This preliminary extension reduces the resistance from the elastic member during the wearing and removal processes, making these operations easier while maintaining the close body contact needed for assist performance
3Power
If the elastic member is kept in a contracted state for assist function, then the muscle assistance is effective, but the instrument becomes difficult to put on or take off
Solution Approach 1:
The system dynamically adjusts the length of the wearing-removal member based on the operational phase. During donning and doffing, the member is extended to reduce resistance and ease the process. During assistive operation, the member is contracted to provide effective muscle assistance. This dynamic adjustment resolves the contradiction between power output and ease of operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for easy and efficient wearing and removal of the assist instrument by extending the member during attachment or detachment, reducing user discomfort and simplifying the process.
Implementation Method 1
an extension-contraction part that is provided to the wearing-removal member, and acts to extend or contract the wearing-removal member by power supply
Implementation Method 2
an assist unit that is provided to the wearing-removal member, and assists muscular strength of the user by at least one of extension and contraction
Data Source
AI summary
To wear and remove an assist instrument has been difficult because a user has to wear or remove the assist instrument on or from her/his body in a state that an elastic member is contracted. An assist instrument includes a wearing-removal member that is placed wearably and removably on a body of a user; an assist unit that is provided to the wearing-removal member, and assists muscular strength of the user by an action of at least one of extension and contraction by power supply; a control unit that controls an action of the assist unit; and something that adjusts constriction of the body by the wearing-removal member at a time of at least one of wearing and detachment of the wearing-removal member.