Folded Sheet Dispenser Bracket Lock to Prevent Overfilling
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Solution Overview
Problem
Conventional folded sheet dispensers are prone to overfilling, which compresses the stack of sheets, making it difficult to remove individual sheets and can lead to unreliable dispensing due to increased friction and potential tearing.
Innovation Solution
A folded sheet dispenser with an overfill prevention device featuring a pivotally connected bracket and locking element that moves from a filling position to a dispensing position when the cover is closed, preventing excessive sheet compression and ensuring easy access for users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the dispenser is overfilled with stacked folded sheets, then the storage capacity is increased, but the sheets become compressed and difficult to remove
Solution Approach 1:
The patent employs a dynamic restricting plate that can move between positions. When the dispenser is open, the plate is held at a restricting position by locking elements to prevent overfilling. When the dispenser is closed, the locking elements rotate and release the plate, allowing it to move upward in response to decompressive forces from the sheet stack. This dynamic adjustment resolves the contradiction by adapting the restriction level based on operational state.
2Quantity of substance
If the dispenser is overfilled with stacked folded sheets, then the storage capacity is increased, but the friction against the dispensing opening is increased making dispensing unreliable
Solution Approach 1:
The patent applies preliminary anti-action by using locking elements that proactively prevent the restricting plate from moving to a position that would cause overfilling. The locking elements engage with the plate when the dispenser is open, restricting the stack length before overfilling can occur. This preliminary restriction prevents the harmful effect of excessive friction and unreliable dispensing from ever manifesting.
3Quantity of substance
If the dispenser is overfilled with stacked folded sheets, then the storage capacity is increased, but the sheets may tear instead of dispensing properly
Solution Approach 1:
The patent implements preliminary action by establishing the restricting plate at a predetermined safe position using locking elements before any sheets are loaded. This pre-positioning ensures that the stack length is limited to a safe maximum that prevents excessive compression and potential sheet tearing, while still allowing adequate storage capacity. The restriction is in place before the harmful effect can occur.
Data Source
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AI summary
The present invention provides a dispenser (10) for folded sheets having an overfill prevention device (60), which effectively prevents the dispenser from being overfilled with folded sheet material. The overfill prevention device comprises a pivotally connected bracket (62) adapted to contact a stack of folded sheets (12) and a locking element (72) which is released when the cover (40) of the dispenser is closed.