Spray Gun Switching Assembly for Palm Numbness
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Solution Overview
Problem
Conventional spray guns cause user discomfort due to the need for continuous trigger pressing, leading to numbness in the palm during extended use, compromising convenience and comfort.
Innovation Solution
A spray gun design featuring a hollow handle and spray head with a T-shaped receiving portion and a switching assembly that includes a reciprocally movable shank with buttons for easy operation, allowing users to alternate between spraying and stopping water flow without continuous trigger activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional trigger mechanism is used for continuous spray control, then the spray gun can be operated to spray water, but the user's palm becomes numb after extended use due to continuous trigger pressing
Solution Approach 1:
The spray gun employs a dynamic switching assembly with a reciprocally movable shank that can be positioned in multiple states (first position for spray, second position for stop, third position for intermittent spray). This dynamic mechanism allows the user to set the desired spray mode once and maintain it without continuous manual intervention, eliminating palm numbness while preserving full spray control functionality.
2Device complexity
If a simple trigger mechanism is used, then the device structure remains simple, but the user must continuously press the trigger which reduces comfort during prolonged use
Solution Approach 1:
The switching assembly is segmented into distinct functional components: a shank with multiple positioning states, buttons for state transition, and corresponding valve control mechanisms. This segmentation allows each component to perform a specific function (positioning, actuation, flow control) independently, maintaining structural clarity while enabling automated spray mode switching that significantly improves user comfort during prolonged operation.
Data Source
AI summary
A spray gun includes a handle and a spray head mounted to each other for forming a hollow main body. A switching assembly is mounted in the main body between the handle and the spray head for controlling the operating type of the spray gun. The switching assembly includes a seat mounted in the main body, a shank extending through the seat, an outlet set received in the seat, a first button and a second button, wherein the first button and the second button are respectively connected two a front end and a rear end of the shank.