Wearable String Propulsion Mechanism for Gesture-Triggered Reloading
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Solution Overview
Problem
Existing string shooting devices require manual reloading and are not wearable or easily actuated without direct hand interaction, limiting their usability and convenience.
Innovation Solution
A wearable string shooting device with a pair of wheels driven by an actuator, allowing operation through hand gestures and featuring a band for attachment to a user's body part, enabling actuation without direct manual contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional string shooting device is used, then the string can be propelled, but manual reloading is required and direct hand interaction is needed for actuation
Solution Approach 1:
The device automatically retrieves and reloads the string loop without manual intervention. The retrieval mechanism uses a spool or reel that automatically winds back the string after it is shot, and the loading mechanism automatically feeds the string back through the housing, eliminating the need for manual reloading operations.
Solution Approach 2:
Manual actuation through hand gestures is replaced with sensor-based detection. The system uses sensors (such as capacitive touch sensors, optical sensors, or accelerometer-based gesture recognition) to detect hand movements and automatically trigger the motor to propel the string, eliminating the need for direct manual contact with the device.
2Adaptability or versatility
If a hand-held string shooting device is used, then direct control is possible, but wearability and convenience are limited
Solution Approach 1:
The string shooting device is designed to be worn on the user's body (such as on the wrist, arm, or chest) using a strap or attachment mechanism. The device is nested within the wearable structure, allowing it to move with the user's body while maintaining all necessary functional components (motor, housing, wheels, and string mechanism) in a compact configuration.
Solution Approach 2:
A wearable mount or strap serves as an intermediary between the user's body and the device. This intermediary structure allows the device to be attached to the user without requiring direct hand holding, enabling hands-free operation while maintaining control through gesture-based actuation detected by sensors.
3Device complexity
If a single driven wheel is used, then the structure is simpler, but the ability to propel and retrieve string effectively is reduced
Solution Approach 1:
Two driven wheels are combined within a single housing structure, working together to perform both string propulsion and retrieval functions. The wheels are positioned to work in conjunction with the string loop, with one wheel primarily responsible for propelling the string outward and the other for retrieving it, while both are driven by the same motor through appropriate mechanical coupling.
Data Source
AI summary
Provided herein is a string shooting device, and more particularly, a string shooting device having that is wearable and operable by hand gestures or body movement. Embodiments include a wearable device for propelling a string including: a string shooting device; a band configured to attach to a body part of a user; and a holder, where the holder is secured by the band to the user; where, in response to the body part of the user being in a first position, the string shooting device is not actuated, and where in response to the body part of the user being in a second position, the string shooting device is actuated.