Spray Gun Trigger Control for Remote Blower Operation
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Solution Overview
Problem
Conventional HVLP spray guns require users to inconveniently operate switches on the blower, which is remote from the spray gun, making it difficult to switch the blower on/off or adjust power settings during use, especially when spraying liquids like paints.
Innovation Solution
Integration of a helical geometry for mechanical support of the air hose, a trigger lever for actuating the electric motor, and separate power adjustment and on/off switches on the spray gun housing, allowing for convenient control of the blower from the spray gun, along with a coupling element for easy connection and electrical communication between the spray gun and blower.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blower and spray gun are separate units connected by an air hose, then the spray gun can be used with flexible positioning, but the user must operate switches on the remote blower which is inconvenient and time-consuming
Solution Approach 1:
An electrical line with helical geometry is introduced as an intermediary element that serves dual purposes: it provides mechanical support to the air hose while enabling electrical connection between the blower and spray gun. This allows control functions to be integrated into the spray gun without compromising the flexible positioning advantage of the separate unit design.
Solution Approach 2:
The control functions (switches and controls) originally located on the blower are merged into the spray gun unit. This integration allows the user to operate the blower settings directly at the spray gun location, eliminating the need to travel to and operate remote controls on the blower, thus saving time and improving convenience.
2Strength
If the electrical line is integrated into the air hose structure, then the air hose gains mechanical support, but the device complexity increases
Solution Approach 1:
The electrical line serves multiple functions simultaneously: it provides electrical connection for power and control signals, and its helical geometry provides mechanical support and flexibility to the air hose. This multi-functionality reduces the need for separate support structures, thereby not increasing overall device complexity despite the integrated design.
Solution Approach 2:
The electrical line is configured in a helical (curved) geometry rather than a straight line. This curvature provides inherent mechanical strength and flexibility, allowing the air hose to bend and move while maintaining structural support, effectively using geometric form to enhance functional performance.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The spray gun for spraying liquids, especially paints, has an operating unit (7,8,9) on the housing (11) and/or handle (10) for engaging and disengaging a compressed air generator (2) and/for controlling its output. The switching or controlling information extracted from the operating unit is fed via a transmission facility (5) to the control elements (18,19) associated with the pressure generator, as a result of which the pressure generator can be engaged or disengaged, and its output controlled or regulated.