Waste Bin Lid Flexible Tab Damping Mechanism
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Solution Overview
Problem
Existing waste bin lid closure mechanisms generate noise pollution due to impact, with previous solutions like rubber stops, braking systems, and labyrinth air paths being complex to manufacture or ineffective over time.
Innovation Solution
A waste bin design featuring a flexible tongue extending from the lid, which deforms to cushion the impact on the tank's collar, reducing noise and allowing for adjustable elasticity and manufacturing simplicity through injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If rubber bumpers are used to cushion the lid impact, then noise is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent combines the noise reduction function with the existing lid structure by integrating a flexible element directly into the lid body. This eliminates the need for separate rubber bumpers attached to both the lid and tank, merging multiple functions into a single integrated component that reduces noise while simplifying manufacturing.
Solution Approach 2:
The flexible element in the lid automatically deforms under impact to cushion the collision and reduce noise. This self-damping mechanism requires no additional active components or complex mechanisms - the structure itself provides the noise reduction function through its inherent flexibility and elastic deformation.
2Object-affected harmful factors
If a braking mechanism is implemented at the hinge point, then lid movement is slowed and noise is reduced, but manufacturing complexity and maintenance requirements increase
Solution Approach 1:
The patent removes the complex braking mechanism from the hinge system and replaces it with a simple flexible element in the lid. This extracts the noise reduction function from the mechanical braking system, eliminating the need for complex components while maintaining the noise reduction effect through passive elastic deformation.
Solution Approach 2:
The patent replaces the active mechanical braking system with a passive elastic deformation mechanism. Instead of using friction-based brakes that require maintenance and complex components, the flexible element absorbs impact energy through elastic deformation, substituting a simple mechanical solution for a complex mechanical system.
3Object-affected harmful factors
If a thin elastic band is used to deform under impact, then noise is reduced, but manufacturing complexity and cost increase due to sliding mold requirements
Solution Approach 1:
The patent uses the same material for both the rigid lid structure and the flexible noise-reducing element. This homogeneous material approach allows the entire lid to be molded in a single injection molding process without requiring complex sliding molds or multiple materials, eliminating the manufacturing complexity associated with thin elastic bands while maintaining the noise reduction function.
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 flexible tongue effectively reduces noise pollution by absorbing the lid's impact, maintaining functionality without complex manufacturing requirements, and is adjustable for varying levels of noise attenuation.
Implementation Method 1
The flexible tab includes a contact line parallel to the lower edge of the lid, designed to bear against the flange... When the lid is closed, the elastic tab rests on the collar before the lower edge of the lid itself comes into contact with the collar. This elastic deformation limits the lid's impact speed and cushions the shock of the lid against the tank.
Data Source
Figure 1
Figure 2~4
AI summary
A container (1) comprising a bowl and (2) a lid (3) movable between an open and a closed position, said lid comprising a lower edge (33) inscribed substantially in a plane (P) and intended to come into contact with an upper flange (20) of the bowl (2) when said lid (3) is in the closed position. The lid (3) comprises at least one flexible tab (30) extending from the wall (32, 34) of the lid (3) between two notches (31) formed on the lower edge (33) of the lid (3), and comprising a contact line (301) parallel to the lower edge (33) of the lid (3), intended to bear against the flange (20), and disposed at a given distance below the plane in which the lower edge (33) of the lid (3) is inscribed.