Finger Force Feedback Glove Braking for Compact Low-Power Haptics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing finger force feedback components in AR/VR systems are complex, large, and consume high power, hindering efficient mechanical perception and simulation.
Innovation Solution
A force feedback system with a glove body, microprocessor, and finger force feedback components featuring a drawstring, transmission member, and stopping member, utilizing a spool with ratchets and a stopping sheet to provide precise feedback while minimizing size and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional finger force feedback components are used, then force feedback capability is achieved, but device complexity and power consumption increase
Solution Approach 1:
The force feedback component is divided into functionally independent modules: a drawstring for force transmission, a spool with ratchets for motion control, and a stopping sheet for braking. Each module performs a specific function, allowing for simplified design and reduced overall complexity while maintaining force feedback capability.
Solution Approach 2:
The patent extracts and eliminates unnecessary complex mechanisms from traditional force feedback systems. By using a simple drawstring combined with ratchet-based motion control and a stopping sheet, the design removes the need for complex actuators and sensors, significantly reducing device complexity.
2Reliability
If traditional finger force feedback components are used, then force feedback capability is achieved, but power consumption increases
Solution Approach 1:
The force feedback component is designed to be passively actuated through user interaction. The drawstring is pulled by finger movement, which automatically drives the spool and ratchet mechanism without requiring external power sources. The stopping sheet engages automatically when needed, creating a self-powered system that eliminates continuous power consumption.
Solution Approach 2:
The system operates through periodic discrete actions rather than continuous operation. The ratchet mechanism engages only when the drawstring is pulled, and the stopping sheet activates only when braking is needed, creating intermittent operation that minimizes energy consumption compared to continuous actuation systems.
3Reliability
If traditional finger force feedback components are used, then force feedback capability is achieved, but component size increases
Solution Approach 1:
The patent employs a nested arrangement where the stopping sheet is positioned within the space created by the spool and ratchet mechanism. The drawstring is wound around the spool, and the stopping sheet is arranged to engage with the ratchet teeth, creating a compact nested structure that minimizes the overall volume of the force feedback component.
Solution Approach 2:
The design utilizes multi-dimensional arrangement of components to maximize space efficiency. The spool rotates in one dimension while the ratchet teeth extend radially, and the stopping sheet is positioned to engage with the ratchet teeth from a different spatial orientation, creating a compact three-dimensional arrangement that reduces component size.
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
The system effectively reduces the size and power consumption of finger force feedback components, enhancing mechanical perception and simulation capabilities in AR/VR environments.
Implementation Method 1
the stopping member comprises a piezoelectric structure configured to drive the stopping sheet to insert into the groove between the plurality of stopping structures
Data Source
AI summary
Embodiments of the present disclosure provides a force feedback system, including a glove body, a microprocessor coupled to the glove body and communicatively coupled to an external computing device, and a plurality of finger force feedback components. Each of the plurality of finger force feedback components is mechanically coupled to the glove body and communicatively coupled to the microprocessor, and is configured to provide, based on instructions from the microprocessor, force feedback to a finger corresponding to the finger force feedback component. The finger force feedback component includes a drawstring tracking a movement of the finger, a transmission member following a movement of the drawstring, and a stopping member. A plurality of stopping structures are sequentially disposed on the transmission member. The stopping member is configured to cooperate with any one of the plurality of stopping structures to brake the finger.