Bistable Spring Wearing Module for Easy Donning

The patent employs a bistable spring mechanism that changes its stiffness parameter between two stable states. In the first stable state, the spring exhibits high stiffness to maintain secure connection, while in the second stable state, it exhibits low stiffness to allow easy donning. This parameter change enables the fastening system to provide both easy operation during donning and reliable connection during use, resolving the technical contradiction between ease of operation and connection reliability.

The patent utilizes a dynamic fastening mechanism where the connection state can transition between two stable states. The bistable spring allows the system to dynamically switch between a connected state (first stable state) and a disconnected state (second stable state). This dynamic特性 enables users to easily don and doff the apparatus while maintaining reliable connection when worn, resolving the contradiction between simple fastening and connection reliability.

The patent implements a self-service mechanism where the bistable spring automatically transitions between stable states based on the donning process, without requiring complex adjustment components. The user simply needs to apply force to initiate the transition, and the system self-adjusts to the appropriate stable state. This eliminates the need for multiple adjustment components while maintaining ease of operation, resolving the contradiction between self-adjustment capability and device complexity.