One-Armed Spray Gun Trigger Assembly Design
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Solution Overview
Problem
The existing spray gun designs are cumbersome and prone to part damage during assembly and disassembly, particularly with the trigger roller orientation issues, leading to inefficient cleaning and repair processes and potential damage to critical components like the paint needle.
Innovation Solution
A one-armed trigger design with a single connecting arm and a fastening mechanism that simplifies alignment and securement to the spray gun body, reducing the complexity of assembly and disassembly while protecting the paint needle from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional two-armed trigger design is used, then the trigger can be securely mounted to the spray gun body, but the assembly and disassembly process becomes complex and time-consuming due to alignment requirements
Solution Approach 1:
The trigger is divided into two separate arms (first trigger arm and second trigger arm) that can be independently positioned and assembled. Each arm has its own mounting hole that aligns with corresponding holes in the spray gun body, allowing for simplified assembly where each component can be independently installed rather than requiring complex simultaneous alignment of multiple components.
Solution Approach 2:
The trigger arms are arranged in different spatial dimensions/planes relative to the spray gun body. The first trigger arm is mounted on one side while the second trigger arm is mounted on the opposite side, creating a distributed three-dimensional arrangement that simplifies assembly by allowing independent access and alignment from different directions.
2Productivity
If the trigger roller is not properly oriented during assembly, then assembly becomes faster, but the paint needle may be damaged due to incorrect alignment
Solution Approach 1:
The trigger roller is pre-oriented during the trigger arm assembly process itself, before the final tightening and operational use. The design ensures that when the trigger arms are mounted to the spray gun body with proper alignment, the trigger roller automatically assumes the correct orientation, eliminating the need for separate orientation steps while protecting the paint needle.
Solution Approach 2:
The trigger arms serve as intermediary components that mediate between the spray gun body and the trigger roller. By properly mounting the trigger arms to the spray gun body through aligned holes, the trigger roller's orientation is indirectly controlled and secured, ensuring correct alignment with the paint needle without requiring direct manual adjustment.
3Ease of repair
If frequent disassembly for cleaning and repair is performed, then maintenance can be done, but the complexity of re-assembly increases and time is lost
Solution Approach 1:
The trigger system is segmented into separable components (trigger arms, trigger roller, spray gun body) that can be independently removed and reinstalled. This segmentation allows maintenance personnel to quickly disassemble the trigger for cleaning and inspection, and then rapidly reassemble it by simply remounting the trigger arms to the spray gun body without complex alignment procedures.
Solution Approach 2:
The trigger design allows for dynamic, reversible assembly and disassembly operations. The trigger arms can be quickly mounted and unmounted from the spray gun body multiple times without degradation of alignment accuracy, enabling frequent maintenance cycles with consistent, rapid re-assembly times.
Data Source
AI summary
A spray gun and a trigger for the same. A one-armed trigger for a spray gun comprises a single connecting arm, secured to a left side or a right side of a spray gun body of the spray gun; an operating portion, provided at a lower end of the connecting arm; and an actuating component, provided on the connecting arm. The trigger can be more easily and reliably assembled onto a spray gun body and reduce the possibility of damaging parts of the spray gun.