Handheld Defense Device with Segmented Sleeves for Rapid Access
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Solution Overview
Problem
Conventional self-defense devices face challenges such as increased response time due to storage requirements, lack of multi-point protection, and inconvenience in carrying during activities like hiking or jogging, as they often need to be stored in pockets or bags, and existing devices do not provide effective defense both at close and distant ranges.
Innovation Solution
A self-defense system comprising a first sleeve to securely hold a deterrent item, a second sleeve housing a knife with a handle and tip, and a hand strap for secure hand attachment, allowing easy access and operation of both the deterrent item and knife without needing to remove them from storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If self-defense devices are stored in pockets or bags, then safety and appropriateness are improved, but response time deteriorates
Solution Approach 1:
The self-defense device is segmented into multiple functional components (deterrent item in first sleeve, knife in second sleeve, alarm in third sleeve) that can be independently accessed. Each sleeve can be independently opened to reveal its contained defensive element, allowing the user to respond appropriately to different threat levels without exposing the entire device.
Solution Approach 2:
The device is pre-configured with multiple defensive elements in ready positions within the wearable structure. The deterrent item, knife, and alarm are all pre-positioned in their respective sleeves, eliminating the need for assembly or preparation during an emergency situation.
2Reliability
If self-defense devices are stored in conventional ways, then safety is improved, but convenience deteriorates
Solution Approach 1:
The wearable self-defense device integrates multiple defensive functions into a single unit: deterrent item for distance protection, knife for close-quarters defense, and alarm for auditory deterrence. This multi-functional design eliminates the need to carry separate devices for different threat scenarios.
Solution Approach 2:
The device transitions from traditional storage dimensions (pockets, bags) to a wearable dimension that conforms to the body's surface area. The flexible wearable structure allows the device to be distributed across the wearer's body, providing both safety and accessibility without conventional storage constraints.
3Device complexity
If single-function self-defense devices are used, then simplicity is improved, but protection coverage deteriorates
Solution Approach 1:
The defensive system is divided into three distinct functional segments, each housed in its own sleeve: deterrent item (distance protection), knife (close-quarters protection), and alarm (auditory deterrence). This segmentation allows each component to be optimized for its specific function while maintaining overall system simplicity.
Solution Approach 2:
Multiple defensive elements are nested within the wearable structure, with each element contained in its own sleeve that can be independently accessed. The deterrent item, knife, and alarm are nested within the flexible wearable body, allowing compact integration of multiple functions without increasing overall device complexity.
Data Source
AI summary
A self-defense system includes a first sleeve retainably securing a deterrent item. A second sleeve is laterally coupled to the first sleeve and houses a knife. The knife has a handle and a tip. A closed portion of the second sleeve houses the knife handle. An open portion of the second sleeve flexibly covers the knife tip. A hand strap is laterally adjacent to the second sleeve and coupled to at least one of: the first sleeve and the second sleeve. The hand strap is sized and shaped to secure the self-defense system about a hand of a user.