Pressing device for applying a compressive force to products of a product display device, shelf unit and product display device
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Solution Overview
Problem
Existing product display devices face challenges in maintaining a uniform appearance when products are removed, as gaps created by customer purchases lead to uneven rows, and existing compressive force solutions are either heavy or require complex designs.
Innovation Solution
A pressing device with a mass body and support part configured for movement along an inclined surface, utilizing a pourable or flowable material within a cavity to adjust weight and a cover element to secure the filling opening, allowing for adjustable compressive force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the pressing device uses its net weight to generate compressive force by arranging the shelf in an inclined position, then the compressive force is applied to maintain product alignment, but the design becomes complex and requires additional structural components
Solution Approach 1:
The pressing device is extracted as a separate, movable component from the shelf structure itself. It consists of a pressing element that can be independently positioned and adjusted along the shelf, rather than requiring the entire shelf to be inclined. This separation allows the compressive force function to be achieved through a simple, adjustable component rather than complex structural modification.
Solution Approach 2:
The pressing device utilizes the natural gravitational force acting on the shelf and products to generate the compressive force. By positioning the pressing element at an appropriate height and allowing it to be held by friction or simple mechanical retention, the system uses the weight of the products themselves and the shelf structure to provide the pressing force, eliminating the need for additional actuators or complex mechanisms.
2Force
If a heavy mass body is used to generate sufficient compressive force, then the compressive force is adequate to maintain product alignment, but the pressing device becomes heavy and difficult to move
Solution Approach 1:
The pressing device is designed to be lightweight and movable, utilizing the gravitational force of the shelf and products rather than carrying its own heavy mass. The pressing element is held in position by friction between the pressing device and the inclined shelf surface, or by simple mechanical retention features, allowing it to generate adequate compressive force without being heavy itself.
Solution Approach 2:
The design counteracts the tendency of the pressing device to slide down the inclined shelf by using friction forces or simple mechanical retention features. The pressing device weight is minimized, and the compressive force is generated through the interaction between the pressing element and the products, balanced by friction or retention mechanisms rather than heavy mass.
3Ease of operation
If the pressing device is made lightweight and movable, then ease of operation is improved, but the compressive force becomes insufficient to maintain product alignment
Solution Approach 1:
The pressing device leverages the gravitational force acting on the shelf and products to generate compressive force. By positioning the pressing element at an appropriate height on the inclined shelf and allowing it to be held by friction or simple mechanical retention, the system uses the weight of the products themselves and the shelf structure to provide the pressing force, eliminating the need for the pressing device to be heavy.
Solution Approach 2:
The pressing device is positioned on the inclined shelf at a height where the gravitational force components create the necessary compressive force. The inclination angle and pressing element position are configured so that the gravitational force naturally provides adequate compression without requiring additional weight or complex mechanisms.
4Ease of manufacture
If readily available and inexpensive materials are used for the pressing device, then cost-effectiveness is improved, but the durability and reliability may be compromised
Solution Approach 1:
The pressing device is designed using simple, inexpensive materials such as plastic or light metal components that can be easily manufactured and replaced. The design accepts that these components may have limited service life but compensates through simplicity and ease of replacement, making the overall system cost-effective while maintaining adequate reliability for the application.
Solution Approach 2:
The pressing device uses simple materials with appropriate friction characteristics and mechanical properties for the application. By carefully selecting materials with suitable friction coefficients and mechanical strength, the device achieves adequate reliability using inexpensive, easily manufactured components rather than requiring expensive, highly durable materials.
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 solution ensures a consistent compressive force is applied to maintain product alignment, using readily available and inexpensive materials, and prevents material redistribution or escape, while being cost-effective and durable.
Implementation Method 1
a mass body having a predetermined mass for applying a defined weight force by which the compressive force is effected
Data Source
AI summary
A pressing device for applying a compressive force to products of a product display device includes a pressing part for transmitting the compressive force. The pressing device has a mass body with a predefined mass. The pressing device includes a support part carrying the mass body, which is movably connected to an inclined surface carrying the products. An assembly comprises a shelf element having a set-down surface for products, and a pressing device for applying a compressive force against the products.