Backpack Sprayer Handheld User Interface
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Solution Overview
Problem
Existing backpack sprayers have a user interface located on the back-mounted backpack assembly, making it difficult for users to access and control the dispensing of fluid while wearing the sprayer.
Innovation Solution
A backpack fluid dispenser with a handheld dispensing assembly that includes a user interface, allowing users to control the dispensing of fluid easily and conveniently, even when the sprayer is worn on the back.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the user interface is located on the back-mounted backpack assembly, then the sprayer structure is simplified, but the ease of operation deteriorates because users cannot reach the user interface during use
Solution Approach 1:
The sprayer is divided into two main segments: a back-mounted backpack assembly containing the fluid container and pump, and a handheld dispensing assembly containing the user interface and nozzle. This segmentation allows each part to be optimized independently - the backpack assembly provides structural simplicity while the handheld assembly provides easy accessibility.
Solution Approach 2:
The user interface components (control assembly with buttons, display, and sensors) are extracted from the backpack assembly and relocated to the handheld dispensing assembly. This extraction resolves the contradiction by removing the accessibility problem while maintaining the simplified backpack structure.
2Ease of operation
If the user interface is relocated to the handheld dispensing assembly, then the ease of operation is improved, but the device complexity increases due to additional components
Solution Approach 1:
The control assembly including the user interface components (buttons, display, sensors) is merged with the pump assembly and dispensing assembly. This integration allows the user interface to be accessible while avoiding the need for separate, complex control systems, thereby managing device complexity.
Solution Approach 2:
The handheld dispensing assembly serves multiple functions: it houses the nozzle for fluid dispensing, contains the user interface for control, and integrates the pump mechanism. This multi-functionality reduces the need for separate components, managing overall device complexity while improving accessibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ergonomic and accessible user interface enables users to modify inputs during use, enhancing control and usability of the backpack sprayer.
Implementation Method 1
a pump assembly configured to pump the fluid from the fluid container to the dispensing assembly
Data Source
AI summary
A backpack fluid dispenser is provided. The fluid dispenser includes a backpack assembly having a fluid container, a battery compartment, a pump assembly, and a dispensing assembly for dispensing fluid from the container. The dispensing assembly includes a handheld housing having a fluid channel extending therethrough, a nozzle at an end of the fluid channel at one end of the handheld housing, and a user actuated trigger at an opposite end of the handheld housing. The pump assembly is configured to pump the fluid from the fluid container to the dispensing assembly. The fluid dispenser further includes a control assembly configured to control the pump assembly and the dispensing assembly. The control assembly includes a user interface on the dispensing assembly or detachably coupled to the backpack assembly.