Trackless Shelf Pusher Mechanism to Prevent Debris Jamming
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Solution Overview
Problem
Existing merchandising systems face issues with product placement on shelves due to obstruction by debris or sticky substances, leading to inefficient product movement and potential tipping, especially in systems using tracks or inclined surfaces.
Innovation Solution
A trackless pusher mechanism that includes a pusher paddle and a coiled spring, allowing the pusher paddle to extend forward and preventing tipping, along with notched or cut-out portions for spring alignment, and adaptable configurations for different product sizes and shapes, ensuring smooth product movement on both inclined and horizontal surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a track-mounted pusher system is used to push product forward, then product movement is achieved, but the track becomes obstructed with dirt or sticky materials over time, hindering proper operation
Solution Approach 1:
The patent removes the track component from the pusher system entirely. The pusher mechanism operates without a track, eliminating the surface that accumulates dirt and sticky materials. This extraction of the problematic track element resolves the contradiction by maintaining product movement capability while preventing obstruction-related reliability issues.
Solution Approach 2:
The patent introduces a floor surface as an intermediary between the pusher and the shelf structure. Instead of mounting the pusher directly to a track attached to the shelf, the pusher operates on a dedicated floor surface that can be cleaned or replaced independently, serving as a mediator that isolates the pusher mechanism from direct contact with shelf debris.
2Productivity
If a pusher paddle is used to push product forward, then product is moved toward the front of the shelf, but the paddle may tip or bend backwards causing binding in the track
Solution Approach 1:
By removing the track entirely, the patent eliminates the constraint that causes the pusher paddle to bind when it tips or bends. Without the track's rigid guidance, the pusher can operate with greater freedom of movement, preventing binding issues while maintaining the ability to push product forward effectively.
Solution Approach 2:
The patent employs a dynamic pusher design that can adapt its position and orientation as it moves along the shelf. The pusher mechanism is not rigidly constrained but can flex and adjust to product variations, preventing tipping and binding while maintaining pushing effectiveness.
3Productivity
If inclined trays or floors are used to move product toward the front through gravity, then product placement is improved, but debris or sticky substances obstruct the surface, causing products to tip over
Solution Approach 1:
The patent removes the inclined floor surface that accumulates debris. By eliminating the inclined tray/floor configuration, the system prevents the accumulation of sticky substances and dirt that cause product tipping, while still achieving product movement through an alternative mechanism.
Solution Approach 2:
The patent replaces the gravity-based inclined plane mechanism with a different mechanical approach. Instead of relying on gravity and friction on an inclined surface, the system uses an alternative mechanism that does not depend on surface conditions, thereby preventing product tipping due to debris obstruction.
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 effectively maintains product visibility and accessibility by preventing obstruction and ensuring consistent product movement, reducing the need for frequent maintenance and accommodating various product sizes and shapes.
Implementation Method 1
a coiled spring, allowing the pusher paddle to extend forward
Implementation Method 2
A trackless pusher mechanism that includes a pusher paddle and a coiled spring
Implementation Method 3
inclined trays or floors that through gravity will cause the product to move toward the front of the shelf
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 and one or more dividers for separating product into rows. The one or more dividers may be engaged to a front rail in two different conditions, locked and unlocked. In a locked condition, the relationship between the divider and the front rail resists alteration in any direction with respect to each other. In the unlocked condition, the dividers may be freely slid laterally along the front rail, while remaining perpendicular to the front rail. The one or more dividers may lock to the front rail through the use of corresponding teeth, resilient surfaces, a locking tab, a locking bar and/or a cam that may define a cam glide.