Floor brush assembly and cleaning appliance
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Solution Overview
Problem
Wastewater in the wastewater tank of a floor washer can enter the negative pressure device when the host is in a lying posture, affecting its performance.
Innovation Solution
A floor brush assembly with a contact switch and trigger mechanism, where the trigger member moves relative to the contact switch under the host connector's drive, triggering the switch to change the negative pressure device's operating state, preventing wastewater entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the host is in a lying posture to clean low-lying areas, then the adaptability and cleaning capability are improved, but wastewater can enter the negative pressure device affecting its performance
Solution Approach 1:
The contact switch and trigger mechanism are activated in advance when the host connector moves to the lying posture, before wastewater can enter the negative pressure device. This preliminary action changes the operating state of the negative pressure device to prevent water ingress, resolving the contradiction between adaptability in lying posture and reliability of the negative pressure device
Solution Approach 2:
The trigger mechanism provides feedback about the host's posture to the control system via the contact switch. When the host connector moves to the lying posture, the trigger member activates the contact switch, which sends a signal to change the operating state of the negative pressure device, creating a feedback loop that prevents wastewater entry while maintaining cleaning capability
Data Source
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AI summary
The present application proposes a floor brush assembly (100) for a cleaning appliance, comprising: - a floor brush base (110); - a host connector (120) hinged to the floor brush base (110), the host connector (120) being movable relative to the floor brush base (110) between a non-lying posture and a lying posture; - a contact switch (130) arranged on one of the floor brush base (110) and the host connector (120), the contact switch (130) being used to, when triggered, change an operating state of a negative pressure device of the cleaning appliance; and - a trigger mechanism (140) arranged on one of the host connector (120) and the floor brush base (110), the trigger mechanism (140) having a trigger member (141), wherein the trigger member (141) is movable relative to the contact switch (130) under the drive or push of the host connector (120), and when the host connector (120) moves relative to the floor brush base (110) to the lying posture, the trigger member (141) triggers the contact switch (130). The present application also proposes a cleaning appliance (10) comprising the floor brush assembly.