Hand-Enclosed Jogger Alarm Trigger Mechanism

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Solution Overview

Problem

Existing alarm systems for joggers are cumbersome, difficult to operate with one hand, and prone to false activations, limiting their effectiveness and safety during outdoor activities.

Innovation Solution

A wearable alarm system designed as a carrying device that encloses the user's hand, featuring a trigger accessible by closing the hand or curving a finger, which is securely positioned to prevent accidental activation and allow one-handed operation, even in dangerous situations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the alarm device is made handheld with multiple functions (receiver, camera, GPS, siren), then the alarm capability is improved, but the device becomes too heavy and large for sporting activities

Engineering Contradiction:
Improvealarm capabilityVSAvoiddevice weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The alarm system is divided into two separate components: a lightweight trigger device worn by the user and a separate receiver unit with siren and strobe light. This segmentation allows the user to carry only the minimal essential component (trigger) during exercise, while the heavier alerting components remain stationary or are carried separately.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The heavy and complex components (receiver, siren, strobe light, camera, GPS) are extracted from the portable device and placed in a stationary central receiver location. The portable device retains only the essential triggering function, making it lightweight and suitable for sporting activities.

Inventive Principle:
Principle #2Taking out (Extraction)

2Weight of moving object

If the alarm device is worn around the wrist like a bracelet, then it is lightweight and comfortable, but two hands are required to trigger the alarm

Engineering Contradiction:
Improvedevice weightVSAvoidone-handed operation
Core Design Contradiction:
Weight of moving objectVSEase of operation

Solution Approach 1:

Instead of requiring the user to reach for and press a button on the side or back of the wrist device, the trigger is inverted to be located on the palm side of the hand. This allows the alarm to be activated simply by closing the hand into a fist, enabling one-handed operation even when the user is grabbed from behind or cannot use their hands freely.

Inventive Principle:
Principle #13The other way round (Inversion)

3Ease of operation

If the trigger is constantly in contact with the body during jogging, then it is easily accessible, but false alarms are triggered by vibrations and shocks

Engineering Contradiction:
Improvetrigger accessibilityVSAvoidfalse alarm prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A protective covering or sheath is introduced as an intermediary between the trigger mechanism and the external environment. This covering protects the trigger from accidental activation by vibrations, shocks, or contact with clothing during jogging, while still allowing intentional activation when needed.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of operation

If the alarm device is held in the hand at all times, then it is immediately available in emergencies, but it restricts freedom of movement and causes discomfort during jogging

Engineering Contradiction:
Improveimmediate availabilityVSAvoidfreedom of movement
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The alarm system is segmented into a minimal portable trigger component and a stationary receiver component. The trigger is designed as a lightweight glove or wristband that does not restrict movement, while the heavier receiver with siren and lights remains stationary, providing immediate alarm capability without compromising freedom of movement during exercise.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3721741B1Alarm system for jogger
Publication Date: 2021.07.28 ERNIDEE UG HAFTUNGSBESCHRANKT
  • EP3721741B1 patent drawingFigure 1
  • EP3721741B1 patent drawingFigure 2~3
  • EP3721741B1 patent drawingFigure 4~5

AI summary

Alarm system (1) and method for joggers (2) comprising a carrying device (3) and at least one associated alarm device (4) with a data interface (29) and a transmitting and receiving unit for sending and receiving data, wherein the data interface (29) maintains a permanent radio connection with a mobile communication device (30). The carrying device (3) is securely attached to the jogger's (2) body. The alarm device (4) has a housing (22) with a top (22b) and a bottom (22c). A trigger (5) is included on the top (22b) to trigger an alarm when activated. In its intended use, the carrying device (3) encloses the middle hand (7) of a jogger (2) on the palm (8) and the back (9).The underside (22c) of the housing (22) rests against the palm (8) of the user's hand (2) during intended use, so that the trigger (5) located on the top (22b) of the housing (22) is completely unloaded and freely accessible when the hand is open and can be actuated with one hand in case of imminent danger by closing the hand (6) or by, for example, the pressure of a bent finger to trigger the alarm.