Foldable Mop Plate Latching for Easy Release and Stable Unfolding
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Solution Overview
Problem
Existing foldable wiper plates are difficult to unlock and fold reliably, requiring high dexterity and effort, as the locking connection is challenging to release due to opposing forces on the handle and release pawl, making the process cumbersome and time-consuming.
Innovation Solution
A foldable wiper plate design featuring latching means on each panel wing that can be securely locked and released using a release device, such as a foot pedal, allowing for easy unfolding without simultaneous handle lifting, and an articulated connection for balanced operation in a centrifugal drying device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking connection is provided between panel wings to secure the working position, then the reliability of the unfolded position is improved, but the ease of operation deteriorates because the locking connection requires high pressure and dexterity to release
Solution Approach 1:
A release lever is introduced as an intermediary mechanism between the user's foot and the locking connection. The release lever translates the downward foot pressure into a pivoting motion that reliably disengages the latching lugs from the locking projections, solving the problem of requiring excessive foot pressure while maintaining secure locking during operation
Solution Approach 2:
The locking system transitions from a static, pressure-dependent connection to a dynamic, motion-based release mechanism. The latching lugs engage with locking projections to maintain the working position, but the release lever introduces a dynamic element that allows easy transition to the folded position through a simple pivoting motion rather than sustained high pressure
2Ease of operation
If the release pawl is arranged to be pressed down for releasing the locking connection, then the ease of operation is improved, but the device complexity increases due to the need for coordinated actions
Solution Approach 1:
The release lever combines multiple functions into a single component: it serves as both the release mechanism for the locking connection and the pivot point for the panel wing. By integrating the release function with the structural connection between panels, the system eliminates the need for separate coordinated actions of pressing a pawl and lifting the handle simultaneously
Solution Approach 2:
The release lever is extracted from the central part and relocated to the panel wing itself. This extraction allows the release mechanism to be operated independently from the handle lifting action, separating the locking release function from the structural support function and eliminating the need for coordinated user actions
3Reliability
If the latching lugs are pressed against the axes by the panel wings, then the reliability of the latching connection is improved, but the ease of manufacture deteriorates due to precise alignment requirements
Solution Approach 1:
The panel wings are designed with built-in spring pressure that continuously pushes the latching lugs against the locking projections before engagement. This pre-applied force ensures reliable latching without requiring excessive manufacturing precision, as the spring cushion compensates for minor alignment variations and maintains consistent contact pressure during operation
Data Source
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AI summary
The wiping plate comprises two plates which are pivotable about different shafts. The first plate has a latching device for detachably latching the first plate to the second shaft. The two shafts are arranged on a common holding member. The second plate preferably has a second latching device for latching the second plate to the first shaft. Independent claims are included for a cleaning device, and for a cleaning system.