Vacuum Tool Support Pedal Locking for Easy Position Switching
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Solution Overview
Problem
Vacuum appliance tools often require complex and different motions for engagement and disengagement, making it inconvenient to switch between tool positions, such as elevating and lowering tools for cleaning surfaces.
Innovation Solution
A tool assembly with a frame, pivot, and actuator that allows the tool to be supported in multiple positions using a pedal system, where the pedal can be biased to lock in positions, enabling easy switching between 'up' and 'down' positions with minimal parts and similar user input actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanism-type actuator is used to engage and disengage the tool, then the tool can be securely held in position, but the operation becomes complex requiring different motions for engagement and disengagement
Solution Approach 1:
The patent inverts the traditional latch mechanism by using a spring-loaded catch that automatically engages with notches to hold the tool in position. Instead of requiring active engagement motion, the spring catch passively engages and holds, while a single release motion disengages it. This inversion simplifies operation while maintaining reliable positioning through the spring-loaded engagement mechanism.
2Reliability
If a spring-loaded ratchet device is used, then the tool can be held securely in engaged position, but releasing the tool requires a second action motion
Solution Approach 1:
The pedal mechanism serves multiple functions: it acts as both the engagement actuator and the release actuator through a single component. When the pedal is depressed, it engages the tool; when released, it automatically disengages through the spring mechanism. This multi-functionality eliminates the need for separate engagement and release motions, simplifying operation while maintaining secure engagement through the ratchet-like notch system.
3Reliability
If a deadbolt door lock mechanism is used, then the tool can be locked firmly, but unlocking requires turning the key or handle in the opposite direction
Solution Approach 1:
The spring-loaded catch mechanism is self-actuating through the pedal motion. The spring automatically engages the catch with notches to lock the tool firmly in position without requiring additional locking actions. For release, the system uses the same pedal mechanism in reverse - lifting the pedal allows the spring to retract and disengage the catch, providing consistent single-motion operation while maintaining firm locking through the spring engagement.
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
Facilitates efficient and user-friendly operation by allowing tools to be easily moved between elevated and lowered positions using simple and consistent motions, enhancing usability and convenience in vacuuming applications.
Implementation Method 1
a biasing device coupled to the frame between the pivot and one of the first and second ends
Data Source
AI summary
A tool assembly for a vacuum appliance, such as a wet/dry vacuum cleaner, is described, wherein the tool assembly may include a frame, a mount configured to couple the frame to the appliance, a pivot, an actuator configured to support the frame in one or more positions, and a tool coupled to the frame. The assembly may also include a biasing device between the pivot and an end of the frame, and may be disposed in one or more positions relative to a vacuum surface. Also described is a vacuum appliance system that can include a debris collector, a power head assembly, a base, and a tool assembly. Such a vacuum appliance system can also include a main wheel assembly and a plurality of optional main wheel assembly mounting locations. The system may further include a quick-release filter cage coupled to the power head assembly.