Charging stand for vacuum cleaner
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Solution Overview
Problem
Existing charging stands for vacuum cleaners lack safety features to prevent accidental exposure of blades when switching positions, which can lead to user hazards and inefficient hair removal from brush rolls.
Innovation Solution
A charging stand with a pivotable pedal and safety protection devices that prevent the pedal from moving to a second position unless both safety protection devices are simultaneously released, featuring a blade that extends to cut hairs and a microswitch to stop charging when the pedal is in the second position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pedal is made pivotable to enable position switching for hair removal, then the functionality and versatility of the charging stand are improved, but the risk of accidental blade exposure and user injury increases
Solution Approach 1:
A safety protection device acts as an intermediary between the pedal and the blade. The safety protection member physically blocks the blade from extending when the pedal is in the charging position, preventing accidental exposure while allowing intentional activation when needed
Solution Approach 2:
The safety protection device preemptively prevents harmful action by blocking the blade before it can accidentally expose. The resetting member continuously maintains the safety protection member in a blocking position, counteracting any potential accidental pedal movement
2Object-affected harmful factors
If safety protection devices are added to prevent accidental pedal movement, then user safety is improved, but the device complexity increases
Solution Approach 1:
The safety protection function is segmented into distinct components: a safety protection member that physically blocks blade exposure, and a resetting member that maintains the blocking position. This segmentation allows each component to perform its specific safety function independently
Solution Approach 2:
The safety protection member is designed to be movable rather than fixed, allowing it to dynamically respond to pedal position changes. The resetting member provides continuous dynamic adjustment to maintain the safety block, creating an adaptive safety system
3Object-affected harmful factors
If the pedal is prevented from moving to the second position when safety protection cooperates, then accidental blade exposure is prevented, but the ease of operation for intentional hair removal decreases
Solution Approach 1:
The safety protection system is self-regulating through the resetting member that automatically maintains the safety block. When the pedal is intentionally moved to the second position, the system naturally transitions without requiring additional user intervention to disengage safety
Solution Approach 2:
The safety protection member is positioned in advance to block blade exposure before any pedal movement occurs. This preliminary blocking action prevents accidental exposure while remaining ready to allow intentional operation when the pedal is properly actuated
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
Enhances user safety by preventing accidental blade exposure and simplifies hair removal from brush rolls during charging, ensuring the blade only extends when intended, thus improving the functionality and safety of the charging stand.
Implementation Method 1
the resetting member is a resilient sheet or a spring
Implementation Method 2
the resetting member is a resilient sheet or a spring
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A charging stand (100) for a vacuum cleaner (200) includes a body (1), a pedal (2) and a safety protection device (3). The pedal (2) is disposed to the body (1) and is pivotable between a first position and a second position. The safety protection device (3) is disposed to the body (1), normally cooperate with the pedal (2), and separate from cooperation with the pedal (2) to make the pedal (2) move from the first position to the second position when moved.