Recessed Vacuum Cleaner Switch Trigger to Prevent False Activation
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Solution Overview
Problem
Existing vacuum cleaners are prone to false triggering due to the placement and design of switches, which can lead to accidental activation and increased complexity in operation.
Innovation Solution
A vacuum cleaner design featuring a recessed cavity in the housing with a switch trigger hidden within the outer contour, where the operation direction of the trigger is angled relative to the opening, reducing the likelihood of accidental activation and incorporating a drain hole to prevent water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the switch trigger is exposed on the outer surface for easy access, then the ease of operation is improved, but the reliability deteriorates due to false triggering
Solution Approach 1:
The switch trigger is nested within a recessed cavity in the housing, creating a hidden configuration where the trigger is accessible for operation but not exposed on the outer surface. This nesting approach prevents false triggering while maintaining operational accessibility, as the trigger can be actuated through the cavity opening without being visible or accessible from the exterior.
2Reliability
If the switch trigger is hidden in a recessed cavity to prevent false triggering, then the reliability is improved, but the ease of operation worsens due to reduced accessibility
Solution Approach 1:
The recessed cavity is designed with specific local characteristics: the opening is positioned and sized to allow finger access for deliberate activation, while the angled orientation and recessed depth create a local environment that prevents accidental activation from external impacts or contact. This local quality differentiation allows the same structure to provide both protection and accessibility.
3Ease of operation
If the opening of the cavity faces the same direction as the air inlet to facilitate operation, then the ease of operation is improved, but the object-affected harmful factors worsen due to increased water ingress risk
Solution Approach 1:
The switch trigger operation direction is angled relative to the cavity opening direction, creating a dimensional offset between the two vectors. This angular relationship allows the opening to face the air inlet direction for operational convenience while the trigger activation occurs along a different dimensional plane, reducing direct exposure to water ingress paths that follow the air flow direction.
Data Source
AI summary
A vacuum cleaner includes a head assembly including a housing and a fan arranged in the housing. A dust storage barrel and a filter assembly are arranged below the head assembly, the dust storage barrel being detachably connected to the head assembly. A switch is provided for controlling the fan located in the housing. A side wall of the housing has a cavity defined by an opening. A switch trigger is provided for turning on or turning off the switch and is located in the cavity so that no part of the switch trigger extends outwardly past an outer contour of the housing.