Palm-Mounted Tip Plate for Training-Free Hand Self-Defense
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Solution Overview
Problem
Existing self-defense devices require training to be used effectively and do not provide clear evidence of an attack, while also limiting hand mobility and failing to deter attackers effectively.
Innovation Solution
A hand-operated self-defense device with strap elements and a support plate featuring tip elements that project beyond the palm, allowing for intuitive defense without training, along with integrated evidence collection and deterrent features such as adhesive surfaces and fluid dispensers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glove-like protective devices with rigid bar elements are used, then impact protection and pain induction are improved, but finger mobility is restricted
Solution Approach 1:
The device divides the hand into protected and free segments: the palm and fingers are covered with a flexible cover containing a rigid bar element for impact protection, while the thumb remains exposed and free for gripping operations. This segmentation allows simultaneous achievement of protection and dexterity.
Solution Approach 2:
The rigid bar element is positioned specifically on the palm area where impact protection is most needed, while the fingers maintain flexibility and mobility. The cover provides protection where required without constraining the thumb's movement, creating local quality differences in the protective device.
2Adaptability or versatility
If multiple defensive means are integrated into a glove, then defense versatility is improved, but operational complexity and training requirement increase
Solution Approach 1:
The patent extracts the essential defensive function from complex multi-mean devices and implements it through a simple rigid bar element that protrudes from the palm. This single element provides sufficient protective function without the complexity of multiple integrated systems, cameras, or evidence collection devices.
Solution Approach 2:
Instead of providing the attacker with multiple defensive options and requiring training to select the optimal response, the device inverts the approach by providing a simple, instinctive protective mechanism that requires no training. The rigid bar element naturally protrudes to protect the palm during reflexive defensive movements.
3Ease of operation
If tip elements are positioned on the finger part of the hand, then gripping capability is improved, but impact force transmission for self-defense is reduced
Solution Approach 1:
The device transitions from a two-dimensional finger-based gripping surface to a three-dimensional palm-based impact surface. The rigid bar element extends from the palm in a dimension that allows both gripping (through thumb interaction) and effective impact force transmission to the attacker's body.
Solution Approach 2:
The rigid bar element is pre-positioned on the palm to optimize impact force transmission before any defensive action occurs. This preliminary positioning ensures that when defensive movement happens, the force is already aligned for maximum effectiveness, eliminating the need for adjustment during the action.
Data Source
AI summary
A hand-operated self-defense device includes a first strap element for attachment to a palm, a second strap element for attachment to a wrist, a connecting element for connecting the first strap element to the second strap element, and a defense element connected to the connecting element or the first strap element. The defense element includes a support plate element including a plurality of tip element arranged on the support plate element so as to span a surface.