Dispenser Cover Release Bar That Avoids Sensor Triggering
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Solution Overview
Problem
Existing wall-mounted dispensers with hands-free sensors face issues when trying to incorporate a mechanism for opening the cover, as the elongate bar used to disengage the latch is typically located at the dispensing zone, causing unintended product dispensing when accessed.
Innovation Solution
A wall-mounted dispenser design featuring a pivotally secured cover with a latch and an elongate bar biased to rest near the latch, where the elongate bar has yoke ends accessible to the left and right of the dispensing zone, allowing the cover to be opened without triggering the sensors by pressing on these terminal ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elongate bar is located at the dispensing zone to disengage the latch, then the cover can be opened, but the dispenser will dispense product when the user attempts to open it
Solution Approach 1:
The elongate bar is repositioned from the central dispensing zone to the periphery of the dispenser body, utilizing the lateral dimension. The bar extends horizontally with terminal ends accessible at the left and right sides of the dispenser, away from the centrally located dispensing zone. This spatial reconfiguration allows users to operate the latch release mechanism without triggering the hands-free sensor positioned at the dispensing zone, thereby preventing unintended product dispensing while maintaining ease of cover opening.
2Loss of substance
If the elongate bar is positioned away from the dispensing zone, then product dispensing is prevented during cover opening, but the mechanism becomes less accessible
Solution Approach 1:
The elongate bar serves multiple functions: it acts as a lever to disengage the latch from the catch, provides a user interface for opening the cover, and its peripheral positioning serves as a sensor blind zone that prevents accidental triggering of the hands-free dispensing mechanism. The terminal ends of the bar at the left and right sides provide accessible manipulation points that are distributed across the dispenser surface, maintaining ease of operation while preventing product loss.
3Reliability
If the elongate bar is biased to rest near the latch, then the latch remains engaged during hands-free operation, but the bar must be designed to move against bias when activated
Solution Approach 1:
The elongate bar incorporates a spring bias that automatically maintains the latch in the engaged position during normal hands-free operation, eliminating the need for continuous user intervention. When a user presses on either terminal end of the bar, the applied force overcomes the spring bias, allowing the bar to move and disengage the latch. Upon release, the spring automatically returns the bar to its biased position, re-engaging the latch. This self-service mechanism ensures reliable latch engagement while requiring minimal complexity.
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
Enables the cover to be opened without activating the dispensing mechanism, allowing for refilling or maintenance without product wastage, while maintaining hands-free operation for dispensing.
Implementation Method 1
The elongate bar is biased so that the latch release end rests proximate the latch on the cover, and is biased in a direction away from the latch
Data Source
AI summary
A dispenser includes a cover pivotally secured to a backplate to move between an open position, at which the dispenser can be refilled, and a closed position, at which the dispenser may be actuated. The cover includes a latch that engages a catch held on the backplate. An elongate bar secured to the backplate is provided to engage the latch and remove it from the catch to permit the cover to be moved to the open position. The elongate bar includes a yoke extending to left and right terminal ends that are accessible outside of a dispensing zone of the dispenser. This invention is particularly applicable to dispensers that employ sensors to sense the presence of a hand at a dispensing zone.