Hand Tool Movable Guide for Viscous Material Precision
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Solution Overview
Problem
Hand tools used for applying viscous materials, such as caulking and sealants, often require significant force and can lead to operator fatigue and imprecision due to their weight and design, posing health and safety risks and compromising the application quality.
Innovation Solution
A handheld tool with a movably attached guide that can be rotated between an operating and storage position, providing support and precision during application while minimizing interference with obstacles, and allowing for easier storage and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a hand tool is designed with a dispensing tube installed to apply viscous material, then the application force can be generated effectively, but the tool becomes heavy and difficult to maneuver, reducing precision and increasing operator fatigue
Solution Approach 1:
The hand tool is divided into separate functional modules: a reusable hand tool body and a removable dispensing tube assembly. This segmentation allows the heavy dispensing tube to be separated from the lightweight handle, reducing maneuverability requirements while maintaining force generation capability through the mechanical advantage mechanism in the handle.
Solution Approach 2:
The dispensing tube is extracted as a separate removable component from the hand tool body. The hand tool body contains only the essential mechanical advantage mechanism and handle, while the dispensing tube with its plunger and nozzle can be removed when not in use, significantly reducing the weight and improving ease of operation.
2Productivity
If a hand tool with installed dispensing tube is used for extended periods, then continuous application is possible, but operator fatigue and injury risk increase
Solution Approach 1:
By separating the dispensing tube from the hand tool body, the design allows for easier maintenance and replacement of the dispensing tube without replacing the entire tool. This segmentation reduces operator fatigue by allowing lighter tool handling while maintaining continuous application capability through quick tube changes.
Solution Approach 2:
The dispensing tube is designed as a disposable or replaceable component that can be discarded or recovered when worn or damaged. This allows operators to continue working without fatigue by replacing the tube rather than the entire heavy tool, maintaining productivity while improving safety.
3Manufacturing precision
If a fixed guide is attached to the hand tool body, then alignment precision is improved, but the tool cannot be stored compactly and may interfere with obstacles
Solution Approach 1:
The guide is designed as a movable component that can be positioned between different states (extended for precision work, retracted for storage). This dynamic design allows the guide to provide alignment precision during application while enabling compact storage and reduced interference with obstacles when not needed.
Solution Approach 2:
The guide is segmented as a separate movable component rather than a fixed integral part of the hand tool body. This allows the guide to be independently positioned and stored, providing precision alignment during use while enabling compact storage configuration to reduce overall tool complexity and interference.
4Manufacturing precision
If the guide is always in operating position, then precision alignment is maintained, but the tool cannot be stored compactly
Solution Approach 1:
The guide is designed with movable positioning capability, allowing it to be extended to the operating position during application for precision alignment, and retracted to a compact position during storage. This dynamic positioning resolves the contradiction between maintaining precision and reducing storage volume.
Solution Approach 2:
The guide structure allows for nesting during storage, where the guide components can be positioned within or alongside the hand tool body in a compact configuration. This nesting approach enables the guide to be stored within the overall tool volume, reducing storage space requirements while maintaining precision capability when extended for use.
Data Source
AI summary
A tool for applying a viscous material to a surface. The tool comprises: a body having a frame including at least a partial wall defining a cavity having a size for removably receiving a dispensing container that contains the viscous material; a dispensing assembly that is operatively coupled to the body and has a forcing member for applying force to the dispensing container to dispense the viscous material; (3) a control element attached to the body for controlling the application of the applied force by the movable member of the dispensing assembly; and (4) a guide movably attached to the body, the guide being movable between an operating position and a storage position.