Compact Light Attachment with Elastic Sleeve for Self-Defense
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Solution Overview
Problem
Existing self-defense devices with integrated light and spray functions are bulky, making them unsuitable for carrying in small bags or pockets, and often have complex designs that complicate quick activation during unexpected attacks.
Innovation Solution
A compact, wedge-shaped light attachment with a removable elastic sleeve that can be easily affixed to various carrier structures, such as self-defense spray containers and batons, featuring a tapered front and widened rear for secure attachment, and a switch-actuating arm for quick operation, along with a selectively embossed elastic sleeve for comfortable grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light and spray functions are integrated in a single device, then self-defense capability is improved, but device size increases making it unsuitable for carrying in handbags or pockets
Solution Approach 1:
The device is divided into two separate components: a light attachment and a carrier structure (spray container). The light attachment contains the light source, battery, and switch, while the carrier structure holds the spray container. This segmentation allows each component to be minimized in size for its specific function, and the overall device can be carried in handbags or pockets.
Solution Approach 2:
The light attachment is designed with a universal mounting mechanism (elastic sleeve with circumferential groove) that can attach to various types of carrier structures. This universality allows the same light attachment to work with different spray container types and sizes, reducing the need for multiple specialized devices and minimizing overall carrying volume.
2Reliability
If multiple separate compartments and internal wiring are used to connect light, sound, and spray components, then functional integration is achieved, but device complexity increases making operation confusing during unexpected attacks
Solution Approach 1:
The light source, battery, and switch are merged into a single integrated light attachment unit. The switch is positioned on the elastic sleeve where it can be easily accessed during attachment, eliminating the need for separate controls for light and spray functions. This merging reduces operational complexity while maintaining functional integration.
Solution Approach 2:
The elastic sleeve serves multiple functions simultaneously: it provides mechanical attachment between the light attachment and carrier structure, positions the switch in an accessible location, and enables easy on/off control of the light through finger pressure. This self-service design simplifies operation during unexpected attacks.
3Reliability
If a rotational cover is used to cover the spray-activating button and serve as a switch, then spontaneous manipulation is prevented, but activation time increases requiring the cover to be lifted before use
Solution Approach 1:
The switch is designed as a movable component on the elastic sleeve that can be easily pressed with finger pressure. The switch position and activation mechanism are dynamically integrated into the attachment process itself, allowing the light to be turned on immediately when the elastic sleeve is stretched around the carrier structure, eliminating the need for separate cover lifting actions.
4Reliability
If the light source is disposed at the upper end of the torch housing with right-angle emission, then mounting on spray containers is achieved, but device dimensions increase requiring complicated connections
Solution Approach 1:
The light attachment uses a wedge-shaped design that tapers toward the front, allowing it to mount on the upper portion of spray containers without requiring right-angle light emission. The light source can emit in various directions while the wedge shape provides stable mounting, reducing overall device volume compared to traditional torch-style mountings.
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 solution allows for a miniaturized, universally adaptable light attachment that can be quickly and securely attached to different self-defense devices, enhancing usability and safety by minimizing size and simplifying activation, while ensuring a comfortable grip and secure hold during use.
Implementation Method 1
a removable elastic sleeve for surrounding at least a partially the elongated body and the carrier structure to urge and affix the rear side of the casing to the carrier structure
Data Source
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AI summary
A light attachment for affixing to a carrier structure including a light source (4), a battery (5) and a light source controlling switch (23) comprising a casing (1) with a front side and a rear side and including a head portion (16) with a first opening (17) for the light source (4) in the front side and an elongated body portion with a second opening for a switch actuating arm in the front side and further comprising a removable elastic sleeve (6) for surrounding at least partially the elongated body and the carrier structure to urge and affix the rear side of the casing (1) to the carrier structure.