Trackless Shelf Pusher With Floor-Spanning Spring Alignment
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Solution Overview
Problem
Existing merchandising systems face issues with debris and sticky substances obstructing inclined trays and pusher systems, causing products to tip over or fail to move forward, and pusher paddles bending or tipping, which hinders effective product display and accessibility.
Innovation Solution
A trackless pusher mechanism with a pusher paddle and a coiled spring that extends across a floor, preventing the paddle from tipping and using a notched floor to align the spring, allowing products to sit on the floor and spring, ensuring smooth forward movement without tracks or guides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a track is used to guide the pusher mechanism, then the pusher mechanism is stable and aligned, but the track becomes obstructed with debris and sticky materials, hindering proper operation
Solution Approach 1:
The patent removes the track component from the pusher mechanism system entirely. The pusher mechanism operates without a track, eliminating the surface that accumulates debris and sticky materials. This extraction of the problematic track component resolves the contradiction by maintaining pusher operation reliability while eliminating debris obstruction issues.
Solution Approach 2:
The patent introduces a floor surface as an intermediary between the pusher mechanism and the underlying structure. This floor surface provides a clean, easy-to-maintain interface that prevents debris accumulation while still allowing the pusher mechanism to function properly. The floor acts as a mediator that separates the pusher from the track system, eliminating the obstruction problem.
2Ease of operation
If the pusher paddle is mounted on a track, then it is guided properly, but the paddle tips or bends backwards, causing binding in the track
Solution Approach 1:
The patent removes the track that guides the pusher paddle, eliminating the constraint system that causes the paddle to tip or bend backwards. Without the track, the paddle is free to move in a more stable manner, preventing binding and maintaining proper alignment through alternative design features.
Solution Approach 2:
The patent transitions from a constrained one-dimensional track-based guidance system to a more flexible spatial arrangement. The pusher mechanism operates without track constraints, allowing movement and alignment in multiple dimensions, which prevents the paddle from tipping or bending backwards in a single constrained direction.
3Productivity
If an inclined tray is used to move product forward, then gravity causes product to move toward the front, but the surface becomes obstructed with debris, causing products to tip over
Solution Approach 1:
The patent removes the inclined tray surface that accumulates debris. By eliminating this surface, the system prevents debris obstruction while maintaining product movement through alternative mechanisms that do not rely on a continuous inclined surface prone to contamination.
Solution Approach 2:
The patent introduces a floor surface as an intermediary that separates the product movement function from the surface that accumulates debris. This floor surface provides a clean interface for product movement while preventing debris buildup that would cause products to tip over.
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
The trackless pusher mechanism ensures products are efficiently displayed at the front of shelves, preventing tipping and binding, and maintains effective operation by eliminating debris and sticky material obstructions, working with both gravity-fed and non-gravity-fed systems.
Implementation Method 1
a coiled spring that extends across a floor, preventing the paddle from tipping
Implementation Method 2
a notched floor to align the spring
Data Source
AI summary
A product management display system for merchandising product on a shelf includes using a trackless pusher mechanism that travels along a surface on which product is placed. The pusher mechanism of the invention also includes a pusher paddle and a floor that extends forward of the pusher paddle. A flat coiled spring or other biasing element may be operatively connected behind the pusher paddle and extend across the floor of the pusher mechanism and to the front of the shelf. In use, the product to be merchandised may be placed on the coiled spring and on the floor of the pusher mechanism. With this configuration, the pusher paddle is prevented from tipping or bending backwards during operation. The invention may be used with the merchandising of product on horizontal or non-inclined shelves or surfaces, gravity-fed systems, or systems that use gravity to urge product toward the front of the shelf.