Water Gun Trigger Self-Locking for Reduced Hand Fatigue
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Solution Overview
Problem
Conventional water guns are laborious to use, prone to finger injuries, and cause hand fatigue due to long-time pressing on the trigger, resulting in poor user experience and safety concerns.
Innovation Solution
A water gun with an effort-saving hook assembly and self-locking mechanism, allowing for effortless operation, automatic locking, and safety features through a gear assembly and trigger mechanism that switches between effort-saving, conventional, and locking states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional trigger mechanism is used, then the structure is simple, but the user experiences hand fatigue and finger injuries due to long-time pressing
Solution Approach 1:
The trigger mechanism dynamically switches between conventional mode and effort-saving mode. In effort-saving mode, the trigger activates a hook assembly that engages with gear teeth to maintain pump operation without continuous trigger pressure, reducing hand fatigue while maintaining functional simplicity through on-demand complexity activation
Solution Approach 2:
The hook assembly automatically engages with the gear teeth once activated, creating a self-sustaining mechanism that maintains pump operation without requiring continuous user input. The system serves itself by using the initial trigger pull to set up the locking mechanism that then maintains operation autonomously
2Reliability
If a self-locking mechanism is added to prevent accidental triggering, then safety is improved, but the device complexity increases
Solution Approach 1:
The self-locking functionality is merged with the existing effort-saving hook assembly. The same hook that provides effort-saving operation also serves as the locking element that prevents accidental triggering, eliminating the need for a separate locking mechanism and maintaining structural simplicity while enhancing safety
Solution Approach 2:
The hook assembly performs multiple functions: it provides effort-saving operation by engaging gear teeth, acts as a self-locking mechanism to prevent accidental triggering, and can be disengaged to return to conventional mode. This multi-functionality reduces the need for additional components while improving both ease of operation and safety
3Adaptability or versatility
If the trigger mechanism switches between multiple states, then versatility is improved, but the device complexity increases
Solution Approach 1:
The trigger mechanism dynamically transitions between conventional mode and effort-saving mode based on user input. A single trigger pull activates the hook assembly to engage with gear teeth, creating a dynamic system that adapts its operation mode rather than requiring separate mechanisms for each mode
Solution Approach 2:
The hook assembly acts as an intermediary element that mediates between the trigger and the gear mechanism. When activated, it engages with gear teeth to transmit force differently, enabling mode switching without requiring complex separate mechanisms for each operating state
Data Source
AI summary
The present application relates to a water gun. A trigger of the water gun is provided with a self-locking zone in which a self-locking structure is disposed, a first end of an effort-saving hook assembly being located in the self-locking zone. When the trigger is pulled, the first end of the effort-saving hook assembly is movable within the self-locking zone, when the trigger is released, the first end of the effort-saving hook assembly is locked with the self-locking structure to achieve self-locking of the trigger, and when the trigger is pulled and released again, the first end of the effort-saving hook assembly is unlocked from the self-locking structure.