Trackless Shelf Pusher Mechanism to Prevent Binding and Tipping
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Solution Overview
Problem
Existing shelf assembly systems for merchandising products face issues with debris and sticky substances obstructing the movement of products towards the front, leading to tipping and binding of pusher mechanisms, which hinder effective display and accessibility.
Innovation Solution
A trackless pusher mechanism that uses a coiled spring and pusher paddle to guide products along a surface without tracks, preventing tipping and allowing for easy installation on existing shelving systems, ensuring continuous operation and adaptability to different product sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a track-mounted pusher system is used to push products forward, then product movement is guided, but tracks become obstructed with debris and sticky materials causing pusher failure
Solution Approach 1:
The patent removes the track component from the pusher system entirely. The pusher mechanism operates without being constrained to a track, eliminating the surface that collects debris and sticky materials. This extraction of the problematic track element resolves the contradiction by maintaining product guidance through alternative means while eliminating the obstruction source.
Solution Approach 2:
The pusher mechanism is divided into functional components: the pusher paddle for product contact, the spring for propulsion force, and the floor for support. This segmentation allows the pusher to function without a continuous track, with each component performing its specific role independently, thereby eliminating track-related obstructions while maintaining operational reliability.
2Productivity
If a coiled spring pusher mechanism is used, then product is pushed forward, but the pusher may tip or bend backwards causing binding
Solution Approach 1:
The patent extends the pusher floor forward of the pusher paddle, creating a dimensional extension that provides additional support surface. This extended floor acts as a counterbalance that prevents the pusher from tipping or bending backwards during operation, thereby maintaining stability while preserving the spring-driven pushing capability.
Solution Approach 2:
The extended pusher floor serves as a preventive structural element that anticipates and counteracts the tipping or bending tendency of the pusher mechanism. By providing this additional support surface in advance, the design prevents binding issues before they occur during the pushing operation.
3Ease of operation
If inclined trays with low friction surfaces are used, then product slides easily to the front, but debris and sticky substances obstruct sliding and cause product tipping
Solution Approach 1:
The patent removes the inclined tray with low friction surface and replaces it with a trackless pusher system. This eliminates the surface that accumulates debris and sticky substances, thereby maintaining easy product movement through direct pushing action rather than relying on friction-reduced sliding that is susceptible to contamination.
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, maintaining accessibility and reducing maintenance needs by eliminating track obstructions and product tipping, while being adaptable to various product sizes and shapes.
Implementation Method 1
a coiled spring and pusher paddle to guide products along a surface
Implementation Method 2
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 or tray includes using a trackless pusher mechanism that travels along a surface on which product is placed. In one example, the tray or shelf can include a first product retaining member which prevents products from being pushed off of the tray. The pusher mechanism of an exemplary embodiment includes a pusher surface, a second product retaining member, and a pusher floor that extends forward of the pusher surface and between the pusher surface and the second product retaining member. A flat coiled spring or other biasing element may be operatively connected behind the pusher mechanism. In use, the product to be merchandised may be placed on the pusher floor. With this configuration, the pusher surface is prevented from pushing the last product off of the shelf and onto the floor.